Separating solids from solids and sorting (B07)

B07            Separating solids from solids; sorting(8062)

Apparatus and method of analysis of precious stones, apparatus for sorted dispensing material and energy-independent machine-readable medium // 2642357
FIELD: measuring equipment.SUBSTANCE: apparatus for analyzing precious stones contains measuring cell that contains at least one sensor and measuring area, with at least one configured sensor for measuring one or more parameters of a precious stone, when it is in the measuring area. The device also includes transporting vehicle for transporting precious stones to the measuring zone, configured with the option of holding or maintaining a precious stone in the measuring zone fixed on time measurement at least one sensor of one or more parameters of a precious stone.EFFECT: improving the accuracy.32 cl, 9 dwg

Pneumatic duct for grain cleaning // 2641726
FIELD: agriculture.SUBSTANCE: pneumatic duct comprises the front, back and side walls. The supporting grid is adjusted with tilt from the front wall to the back wall. There are windows for the basic material receiving and for the processed grain material output. The side walls are vertically placed at the boost phase section of the pneumatic duct and are slantingdicularly placed at the transition phase and extension sections. The back side at the extension section is downwards offsetted with the transition phase section overlapping and forms the branch duct with the transition phase section.EFFECT: grain material effective division.1 dwg

Device for pneumatically separating and cleaning grain materials // 2641534
FIELD: agriculture.SUBSTANCE: device for pneumatically separating and cleaning grain materials includes a fan, a sluice gate, in the housing of which an inlet and an outlet window and a rotating blade drum, connected to one another by radius walls, are located, at least one control valve, a separator equipped in the upper part with an inlet branch pipe for airmix and an exhaust branch pipe connected to the suction branch pipe of the fan, and in the lower part - with an unloading window connected to the inlet window of the sluice gate, and a bypass channel and a pneumatic separating channel, the lower and upper parts of which are separated by an input device, connected to each other and to the separator. The lower part of the pneumatic separating channel is located under the outlet window of the sluice gate. The inlet and outlet windows of the sluice gate are offset in different directions in such a way that the radius wall connecting them covers half or part of the drum, located under the inlet window of the sluice gate. The control valve is located in the housing of the sluice gate above its outlet window above the drum axis, and forms with the latter the bypass channel. The blade drum serves as an input device for the pneumatic separating channel. The pneumatic separating channel via the bypass channel is connected to the exhaust branch pipe of the separator and/or the suction branch pipe of the fan in bypass of the separator.EFFECT: increased efficiency of separating and cleaning grain materials, simplifying the device design.2 cl, 3 dwg

Processing plant for mineral material processing and method for operating such plant // 2641156
FIELD: machine engineering.SUBSTANCE: plant for mineral material processing contains a frame and a screen supported on a frame of the processing plant, and also a conveyor located above the screen and attached to the screen for transporting the material processed by the screen. The screen support on the frame of the processing plant comprises a first support lever and a second support lever, which are fixed at a distance from each other and arranged with the possibility of turning on the first rotary axes with the connection to the screen and with the possibility of turning on the second rotary axes with the connection to the frame, forming a movable first four-link hinge mechanism. The conveyor support comprises a third support lever and a fourth support lever, which are fixed at a distance from each other and arranged with the possibility of rotation on third rotary axes with the connection to the conveyor above the screen and with the possibility of turning on the fourth rotary axes with the connection to the screen, forming a movable second four-link hinge mechanism. The conveyor is arranged with the possibility of its distancing from screen and approaching to screen, to reduce the transport height of the mineral material processing plant due to the movement of the second four-link hinge.EFFECT: improved material processing.20 cl, 10 dwg
ethod of separating solid phase from fluid medium (versions) and system for method implementation // 2640857
FIELD: machine engineering.SUBSTANCE: proposed group of inventions relates to methods of separating solid phase from fluid medium and can be used for separation of solid phase from drilling mud. Method of separating solid phase from fluid medium, in which: a main pipe is connected to a transverse-flow vibration screen for application of head to pulp, vibrations of are imparted to a chamber, pulp flow in tangential direction along the surface of filtering screens is provided, so that liquid from pulp passes through these filtering screens and a throttle hole. The method is carried out by means of a system comprising the transverse-flow vibrating screen, having a chamber imparted with vibrations during the screen operation; the main pipe, which is connected to the transverse-flow vibrating screen for applying pressure to the pulp in the direction of the transverse-flow vibrating screen; an inlet pipe connected to the main pipe for interfacing between the main pipe and the chamber; a filtering screen installed in the chamber of the transverse-flow vibrating screen, the throttle hole located in the chamber. The fluid in the pulp is separated while the pulp flows in the tangential direction through the filtering screen. Pulp flow through the chamber is limited by the throttle hole, and solid phase of the pulp is discharged from the chamber through the throttle hole.EFFECT: increased productivity and efficiency of solid phase separation from the fluid medium.20 cl, 9 dwg

Vertical separator-transporter // 2640599
FIELD: machine engineering.SUBSTANCE: vertical separator-transporter includes internal and external cylindrical channels, a loading-unloading receiver with an annular outlet slit, located in the inner channel one below the other stages of the working bodies designed to move and fix their position in height. Each stage of the working bodies contains established consistently conical guides, reflecting elements in the form of truncated cones located with a large base down, funnel-shaped dividers with an annular outlet slit. The loading-unloading receiver is supplied with a device to regulate the load fluctuations and the orientation of the center of mass of the grain particles including conical guide in the form of a cone located with a large base down and a funnel-shaped feeder mounted below it. The surface of the conical guide of each stage is executed corrugated, the reflective elements are fixed to an inner vertical shaft, rotatably mounted and located in an outer stationary shaft. The divider of each stage is made in the form of a cylindrical surface coaxial with a funnel-shaped cone and located above the conical corrugated guide of the lower stage. Above the cylindrical surface of the divider there is a receiving slit window located in the focal line area of the reflective element. The working bodies in each stage are made with different radial dimensions, decreasing consistently from one stage to the next.EFFECT: increase in productivity and efficiency of separation of particles of loose grain material.1 dwg

Separation device for reduced polymer wastes // 2640453
FIELD: machine engineering.SUBSTANCE: invention refers to the separation devices for plastic scrap, which is a polymer waste of different textures with different density and aerodynamic characteristics, and may be used for separation of reduced waste generated in the processing of PET bottles. The separation device for reduced polymer waste, containing two fractions with different specific gravity, contains a separation chamber with one inlet port for supplying a stream of reduced wastes placed in the upper part of mentioned chamber, and at least two outlet ports, one of which is intended for the reception of heavy fractions and is made in the lower part of the chamber and placed directly under the inlet port and another for the reception of light fraction, a cyclone for separating the air from the stream of reduced waste, the outlet branch of which is located above the mentioned separation chamber and a blowing fan for supplying air stream with reduced waste into the cyclone. The device is provided with at least one air blower connected by an air duct with an inlet port formed in the side wall of the separation chamber to form a horizontally directed working air flow in the upper part of the latter, in the zone of the inlet port, and the distributor of a flow of the reduced waste which is unsightly adjoining the outlet branch pipe of the cyclone, connecting it to an inlet port of the separation chamber. The inlet port of the separation chamber is made in its upper wall, has a slot-like shape and is located along the side walls of the separation chamber to form two crossing streams of air in the separation chamber - the working air is being fed horizontally through the mentioned inlet port and the second one is carrying the above-mentioned reduced waste coming from above through the inlet port to the separation chamber. The outlet port for the heavy fraction is equipped with a diffuser expanding towards the inlet port. The outlet port for the light fraction is made in the lower part of the chamber and is located behind the outlet port for the heavy fraction in the direction of the horizontal air flow in the separation chamber.EFFECT: increase separation efficiency, and increase its productivity.3 cl, 2 dwg

ethod for milled peat large fraction isolation at roller-disc screen // 2640343
FIELD: mining.SUBSTANCE: method for milled pit large fraction isolation one roller-disc screen includes screening with the division of the obtained product to fines and reject, as well as fines sorting on rotating parallel shafts with discs fixed in a chessboard order thereon. The frequency of shaft rotation along the course of peat movement changes wavily, initially with an increasing frequency of rotation, then with a smooth transition to a decreased rotational speed and then with a smooth transition to an increased rotational speed. Shaft rotation speed on a 9-shaft roller-disc screen along the peat movement course is 49 to 51 rpm on the 1st shaft, 57 to 59 rpm on the 2nd shaft, 83 to 85 rpm on the 3rd shaft, then the rotation speed of the 4th shaft is 83 to 85 rpm, after which the rotation speed decreases and is 57 to 59 rpm on the 5th shaft, 49 to 51 rpm on the 6th shaft, then the rotation speed of the 7th shaft ranges from 49 to 51 rpm, after which the rotation speed increases and is 57 to 59 rpm on the 8th shaft, then the rotation speed on the 9th shaft is 59 to 57 rpm.EFFECT: increased the number of milled peat large fraction obtained with an average weighted diameter of particles mixture from 6 to 12 mm, necessary to enhance the quality of bales obtained, making them less heavy and more durable.2 cl, 4 dwg
Classifier // 2639005
FIELD: mining.SUBSTANCE: classifier includes a stirring chamber having a stirring fluidising bottom and a concentrating chamber having a concentrating fluidizing bottom. The concentrating fluidizing bottom and at least a portion of the concentrating chamber are located below the stirring fluidizing bottom. The concentrating chamber has a horizontal cross-sectional area of approximately 20 to 200 times less than the horizontal cross-sectional area of the stirring chamber. With the help of the above classifier, a material sorting method is carried out, comprising feeding the material to be sorted into a classifier stirring chamber, transferring the material in the stirring chamber to a fluidized state, transferring a portion of the material to the classifier concentrating chamber, fluidly linked with the mixing chamber, transferring material in the concentrating chamber to a fluidized state, the formation in the concentrating chamber of the concentrating fluidized bed, the separation of the material by means of at least concentrating fluidized bed and the output of heavier pieces of sorted material from concentrating chamber.EFFECT: increased efficiency of separation.10 cl, 5 dwg

Device for determining the quantity of loose material, device for loading loose material, machine for cleaning loose material and corresponding method // 2638111
FIELD: machine engineering.SUBSTANCE: invention relates to a device for loading loose material, comprising a device for determining the amount of loose material, comprising a sensor (80), configured to contact the surface of a cone (22, 22') of loose material; a pivoting mechanism (8) movable to various angular positions about the pivot axis (24), and an angle meter (10) configured to measure the angular position of the pivoting mechanism (8) about the pivot axis (24). In addition, the invention relates to a suitable cleaning machine for cleaning loose material. In addition, the invention relates to a corresponding method. A distinctive feature of the claimed solution is the presence of a device for controlling the amount of clearance between the inlet plate and the retaining plate or for controlling the lifting and lowering device based on the measured angular position.EFFECT: improving the supply of loose material by eliminating manual adjustment of the gap width.6 cl, 6 dwg

Device and method of cleaning and fine sorting metallurgical wastes // 2638068
FIELD: technological processes.SUBSTANCE: device of cleaning and fine sorting metallurgical wastes contains a bunker connected to a loose material feeding mechanism vertically oriented by the primary separator equipped with a fan of discharge air into the specified initial separator. The lower part of the initial separator is connected to the cascade separator by means of a pipe directed upwards at an angle to the horizontal. The cascade separator in its middle part has a reflector, above and below which the reflective surfaces are located at some distance from one another, directed at an angle to the wall of the cascade separator. In the lower part of the cascade separator, a damper is installed to output coarse fractions to a magnetic separator and to an external tank, or directly to the external tank. The upper part of the cascade separator is connected with a filter for volatile fine fractions, terminating in an outlet hole connected with a fan or a suction pump. The pipe connecting the initial and cascade separators is made stepped and with a variable diameter or its sections are not coaxial, or it is provided internally with reflective surfaces or in the form of a spiral. The upper parts of the initial and cascade separators are connected by ducts with the collector to collect fine fractions and then with the cascade separator equipped in the lower part with the regulating damper to output coarse fractions through a magnetic separator to the external tank or directly to the external tank. The device is used to implement cleaning and fine sorting of metallurgical wastes, in which the allocated material accumulated in the lower part of the initial separator, is fed with the air flow to the cascade separator through the stepped pipe, inside of which the fraction is further ground. Fine fractions allocated in the initial separator, as in the cascade separator, and raised up, are sent to the next separator where the factions are dissipated and optionally ground. Undesirable ultra-fractions are aspirated from the separator and removed, and the lowered heavy fractions are output, preferably after the magnetic separator, to the external tank or directly to the external tank.EFFECT: increasing the efficiency of cleaning and fine sorting metallurgical wastes.7 cl, 2 dwg

ethod and device for sieve coating // 2637557
FIELD: technological processes.SUBSTANCE: coated sieve comprises a mesh frame. A sieve mesh having an upper surface and a lower surface can be attached to the upper side of the mesh frame and can extend along the length and the width of the mesh frame. The sieve mesh surface can be coated. The coating can be oleophilic or oleophobic. A method of coating a sieve mesh is also described, in which a first coating is applied to the first sieve mesh surface, the first coating being at least one selected from hydrophilic and oleophilic, and a second coating is applied to the second sieve mesh surface, the second coating being at least one selected from hydrophobic and oleophobic.EFFECT: increasing the fluid flow rate through the sieve and improving the fluid drainage indices.20 cl, 5 dwg

Grain-separating machine // 2637207
FIELD: agriculture.SUBSTANCE: grain-separating machine includes a cylindrical sieve and a distribution rotor with a helical spiral. The cylindrical sieve is mounted with the possibility of rotation and with a slope to the horizon in the direction opposite to the axial movement of the separated grain. The distribution rotor with a helical spiral is located inside the cylindrical sieve with the possibility of rotation in the direction opposite to the sieve rotation direction. The helical spiral of the distribution rotor is mounted on longitudinal plates fixed radially or at an angle to the rotor radius. The clearance between the longitudinal plates and the inner surface of the cylindrical sieve in the ear sieve section location area decreases to the sieve end.EFFECT: machine ensures efficient cleaning and sorting of grain.3 dwg

aterial processing plant // 2636063
FIELD: machine engineering.SUBSTANCE: material processing plant contains the frame, the material processing device, the material processing device body, the feeder hinged to the frame for supplying material to the processing device, the first connecting facility, that contains the first rotatable support arm, having the first and the second rotation axis, located at the first distance from each other. The first rotation axis is connected to the first end of the feeder, and the second rotation axis is connected to the frame of the processing unit to move the first end of the feeder. The plant additionally contains the second connecting facility, containing the second rotatable support arm, having the third rotation axis and the fourth rotation axis, disposed at the second distance from each other. The second rotary support arm is hinged by the third rotation axis to the second end of the feeder, and the fourth rotation axis is connected to the processing device body to move the second end of the feeder; the actuator is hingedly connected to the processing device body and hinged to the end of the second support arm on the feeder side for moving the feeder and the second support arm between the first and the second positions.EFFECT: increase of the material processing efficiency, simplification of the design.9 cl, 11 dwg

Device for mechanised rock development // 2635798
FIELD: mining engineering.SUBSTANCE: device for mechanised rock development has an inclined scraper conveyor 1 with at least one sieving element 3, and a second inclined scraper conveyor 2 with at least one sieving element 4. The upper end of the first conveyor 1 is above the lower end of the second conveyor 2. Wherein, at least the first conveyor is configured to adjust the height of its upper end.EFFECT: simplification of the design and simultaneous adjustment of crushing capacity by changing the impact force, reduction of ash content.2 cl, 1 dwg
Check of precious stones // 2635296
FIELD: measuring equipment.SUBSTANCE: device contains a vacuum nozzle for extracting precious stones from a plurality of precious stones; a conveying mechanism for conveying the nozzle and the precious stone held to one or more measuring places; a measuring system comprising a plurality of measuring devices mounted near one or more measuring places and configured to measure one or more precious stone properties. At least one of the plurality of measuring devices is located in proximity to at least one of mentioned measuring places with the ability to measure at least one of mentioned precious stone properties which is held by the nozzle. The conveying mechanism is configured to sequentially deliver the precious stone held by the nozzle to a plurality of measuring devices receiving the precious stone at controlled times and in controlled places. The device comprises a control system operatively associated with a vacuum nozzle and with a measuring system and configured to provide a precious stone approach to a single or each measuring place in a time known to the measuring system and a positive pressure application system for separating the precious stone from the nozzle in the drop zone. A method for sorting precious stones, a method for studying precious stones and a nozzle for holding a precious stone are also proposed.EFFECT: fast, reliable and efficient process of sorting stones.36 cl, 8 dwg

Vibration plant for cleaning bee honeycombs from contaminants // 2634432
FIELD: agriculture.SUBSTANCE: invention relates to plants for extracting beebread and other organic contaminants from honeycomb cells. The vibration plant for cleaning bee honeycombs from contaminants comprises a working housing located on a supporting frame, with a lower part made in the form of a carrier plate, and a vibration exciter. Inside the housing, there are plates for fixing a honeycomb frame from below. The cover of the vibration plant is equipped with springs with an abutment plate attached to them. The honeycomb frames are installed in the housing of the vibration plant vertically. An opening is made in the lower housing part, which is equipped with a drain plug. The plant housing is connected to the platform by means of compression springs, and cleaning bee honeycombs from contaminants is carried out in an aqueous medium. Inside the housing, there are tubes with openings for spraying water.EFFECT: honeycombs undamaged, cleaned from mechanical and organic contaminants.11 dwg

ethod of screening optical film based on phosphorus and used in backlight module and backlight module with such film // 2633800
FIELD: physics.SUBSTANCE: screening method includes the following steps: a) dividing the inner surface of the backlight module without a phosphorous-based optical film into several measurement zones and obtaining a transmission spectrum of each of the measurement zones; b) obtaining a chromaticity value of each of the measurement zones coinciding with the optical film based on phosphorus; c) checking the chromaticity values obtained in step b) in the interval of standard chromaticity; wherein the screening process is completed if all chromaticity values are in such an interval; matching at least one measurement area with the new phosphorous-based optical film if the chromaticity value of this at least one of the measurement zones is not in the interval and returning to step b).EFFECT: increased saturation of backlight with deeper penetration and improved colour uniformity.12 cl, 5 dwg

Grain cleaning combined machine // 2633776
FIELD: agriculture.SUBSTANCE: machine consists of an air channel for grain separation by an ascending airflow and windows for receiving the initial grain material and removing that to be processed. The air channel is formed by a front wall, a rear wall and side walls and comprises a supporting mesh installed with a slope from the front wall to the rear one. At least two V-shaped plates are installed across the side walls above the supporting mesh with a clearance at a distance from each other. An angle ϕ between the plates is associated with the critical rate of seed destruction onset.EFFECT: improved grain cleaning.3 cl, 14 dwg

Filter with increased filtration area // 2633601
FIELD: technological processes.SUBSTANCE: for the manufacture of filter, filter frame is casted from composite material. The frame is attached to a plurality of support elements protruding above the filter frame. The first of support elements plurality has a height varying from the first height value above the filter frame to the second height value above the filter frame. Plurality of support elements protrudes above the main part at different heights to form a wavy configuration. Plurality of protrusions protrudes over the main portion and intersects with at least one support element of the plurality of support elements. Fabric net is fused to support elements plurality, whereby the fabric net corresponds wavy profile formed by the plurality of support elements, so that the filter corresponds to a wavy configuration. At least a part of the plurality of support elements and of the plurality of protrusions pass through the net.EFFECT: increasing the throughput of filters and ease of installation, reducing filtering time.13 cl, 6 dwg
ethod of discrete selection of material from material flow // 2633455
FIELD: technological processes.SUBSTANCE: after the material flow falling from the conveyor in a free fall, the flow is divided into two. For this purpose, the optimal conditions for the separation of material in free fall are chosen in advance and the material flows are successively formed. For this, for a selected time interval, the longitudinal speed of conveyor is changed, for example, it is reduced. Optimal conditions for the separation of material in free fall are selected by determining the trajectory of free fall of the material after its falling from the conveyor at different longitudinal speeds of the conveyor. Optimal point of division of successively formed material flows at the selected conveyor speeds is selected. At the selected point, in the course of the free fall of material, successively formed material flows are divided. A part of material flow is formed and sampled, for example, at a lower longitudinal speed of the conveyor, and the other part of sampled material at a higher conveyor belt speed. This provides different trajectories of free fall of material and the conditions for the separation of material in free fall. Sequentially separated streams of material are accumulated or sent for further processing.EFFECT: simplifying the design and reducing energy costs.1 dwg,1 ex

ethod of coal concentration and line for its implementation // 2632600
FIELD: mining engineering.SUBSTANCE: method of coal concentration is characterized in that pieces of coal mass are sorted according to the grade and size, so that the smallest piece of rock of the preset grade and size is heavier than the largest lump of the actual coal of this grade and size, and then the obtained grade and size of the coal mass is supplied to a valve, with the help of which the weight of the piece is determined separately, and if the weight of this piece is equal to or greater than the given value, it is fed into a rock hopper, and if its weight is less than preset value, it is fed into coal hopper. The method is carried out on a line including a hopper for a coal mass of a certain grade and size, a box located at the bottom of the hopper and having a square cross-section, the size of which ensures free passage of the largest piece of coal mass of the given grade size through it, a device feeding a piece of coal mass on the valve located below the box, a rock hopper, a coal hopper. The device feeding pieces of coal mass to the valve includes a shaft with radially attached blades rotatably mounted clockwise and a casing located at the top and sides of the blades and guiding a piece of coal mass directly to the valve separating the pieces of rock from the pieces coal. The valve contains flat flaps attached radially to the axes and in the closed state forming a trough located at an angle to the horizontal. The axles are mounted on bearings attached to the hopper body. To each axis is attached a lever located perpendicular to the axis and in the same plane as the valve flap. A weight is attached to the end of each lever which is selected so that the valve flaps are opened upon receiving a piece of coal mass of given weight or heavier than it.EFFECT: increased efficiency of coal concentration with simplicity of the method and compactness of the coal concentration line.2 cl, 2 dwg

ethod of producing fine aggregate of improved quality and equipment complex for its implementation // 2630934
FIELD: construction.SUBSTANCE: group of inventions can be used to produce a fine aggregate of improved quality from natural sand and sand from crushed rock screenings with a screened fraction less than 0.1 mm with the addition of finely ground mineral material for its use in concrete. A method for producing a fine aggregate of improved quality is proposed, based on separating gravel grains larger than 5 mm due to screening sand and separating the sand into two fractions. As the first fraction, the fraction of 3-5 mm, and as the second fraction, the fraction less than 3 mmis chosen. The first fraction is sent to the first intermediate accumulation hopper. The second fraction is sent to a drum screen with a mesh of 0.1 mm, fixed on its walls. The drum is installed at an angle of 10° to move the sand inside it, the sand falling into the drum is rotated together with the drum, and the particles of 0.1 mmare sifted out. Through the entire drum length, nozzles are installed from above on the outside, by means of which the drum screen is blown by compressed air. The separated fine fraction with the air coming from the nozzles is sucked by an air pump into exhaust ventilation, the inlet channels of which are placed under the drum opposite the nozzles. The exhaust ventilation is equipped with a system for cleaning air from small particles. The material that has passed through the drum screen with a dimension of 0.1-3.0 mm is sent to the second intermediate hopper. The finely ground aggregate is placed in the third intermediate hopper. The materials placed in three intermediate hoppers are dosed, mixed together, and the result of mixing in the form of finished products is loaded into vehicles for delivery to consumers. The method is carried out using a complex including a vibrating flat screen, a drum screen, three intermediate hoppers, three screw feeders, a screw mixer, a compressor, an air pump, and a filtration system.EFFECT: improving the efficiency of producing a fine aggregate of increased quality.2 cl, 2 dwg, 2 tbl
Device and method of charging material separation into, at least, light material fraction and heavy material fraction // 2630517
FIELD: technological processes.SUBSTANCE: fractionating device for the separation of charging materials into light material fraction and, at least, heavy material fraction contains, at least, one inlet for charging material, at least, one outlet for lightweight material of lighter fractions and, at least, one outlet for heavy material fraction, a flow generator for generating a gas flow in the fractionating device for the separation of charging material into light fraction and heavy fraction, curvilinear centrifugal separator for separation of, at least, light material fractions from the gas flow, which is located in the direction of charging material transportation downstream from the transporter inlet for transportation of charging material to the centrifugal separator. At least, 50% of gas can be directed to the fractionating device in the form of a circulating flow. The circular flow movement can be directed in cross section through the centrifugal separator around the centrifugal separator placed in the fractionating device. The transporter is located, at least, in individual sections mainly along and/or substantially parallel to the longitudinal axis of the fractionating device within the at least partially closed gas flow of the circular flow. The method for separating the charging material is carried out on the above-mentioned device. The method includes the following operating steps: transportation of the charging material to, at least, one inlet of the fractionating device and/or to a downstream transporter, transportation of the charging material to the centrifugal separator by means of a transporter, separation in the centrifugal separator of the light material fractions from heavy material fractions by means of the gas flow produced by the generator, separation of the light material fractions from the gas flow in the centrifugal separator and, at least, 50% of gas in the gas flow in the form of a circular flow in the fractionating device.EFFECT: higher separation efficiency.17 cl, 3 dwg

Device for automatic crystal sorting // 2629740
FIELD: measuring equipment.SUBSTANCE: device for automatic crystal sorting by weight can be used for sorting crystalline mineral raw materials, in particular diamonds, by weight groups and comprises of a crystal loading unit, a unit of crystal supply to a control position, a crystal mass determination unit, a sorted crystal distribution unit and a control unit, a twin crystal reject unit, a dual-feed detection unit. The crystal loading unit is made in the form of a removable hollow drum with a protrusion on its inner surface, forming a double helix, and is rotatably mounted in the roller system. The unit for supplying the crystals to the control position is made in the form of two horizontal screw conveyors arranged in series and connected to the control unit. The conveyors are arranged and controlled so as to maximize the stretching of the crystals along the screws. The dual-feed detection unit is in the form of an inclined labyrinth of a step type, the twin crystal rejection unit is made in the form of a chamber rotating in a vertical plane and connected with a labyrinth in the upper part, with a twin crystal bin and the sorted crystal distribution unit in the lower part. The sorted crystal distribution unit is made in the form of an inclined branch pipe, rotating around a vertical axis and mounted over a horizontal plate, equipped with an optical sensor, having holes, connected with the sorted diamond bins through transport channels in the form of inclined tubes.EFFECT: device makes it possible to increase the accuracy of the separation of crystals into weight categories, also due to eliminating the simultaneous weighing of crystals during their simultaneous fall.3 dwg

Quartz sand enrichment device // 2628971
FIELD: machine engineering.SUBSTANCE: device for enrichment of quartz sand comprsises a supply hopper for unenriched quartz sand which is equipped with a discharge feeder, a lifting-and-transporting mechanism supplying unenriched quartz sand from the supply hopper to the input of a vibrating screen, a magnetic separator which input is connected to the under screen output of the vibrating screen, and the output is connected to the hopper for enriched quartz sand, and a hopper for oversized quartz sand. The device is additionaly provided with a reverse feeder for discharging the hopper with oversized quartz sand and a flow switch which input is connected to the above sceen output of the vibrating screen. The first output of the flow switch is connected to the input of the lifting-and-transporting mechanism. The second output of the flow switch is connected to the oversized quartz sand hopper connected by its output to the input of the reverse discharge feeder, the first output of which is connected to the input of the lifting-and-transporting mechanism, and loading of oversized material for disposing is carried out from the second output.EFFECT: reduction of quartz sand losses.3 dwg

Grain-separating machine // 2628433
FIELD: agriculture.SUBSTANCE: grain-separating machine contains a frame, a device for receiving grain, two swinging sieve boots and a drive shaft for communicating antiphase vibrations to the sieve boots. The two swinging sieve boots are arranged in two tiers. The upper sieve boot is mounted on a pair of suspensions and a pair of racks, and the lower sieve boot - on a pair of racks and a pair of suspensions, or vice versa. The fixing points of each pair of suspensions and the fixing points of the opposing pair of racks on the machine frame are at an equal distance from the horizontal plane passing between these points.EFFECT: dynamic balance of the grain-separating machine.1 dwg

Device for creating and cleaning air flow from impurities // 2628384
FIELD: machine engineering.SUBSTANCE: device for creating and cleaning an air flow from impurities contains a settling chamber with inlet and outlet nozzles, a counterflow louvered dust collector with an outlet nozzle, a removal device and a separation wall, a cross flow fan located between the settling chamber and the dust remover and having a blade wheel, a curvilinear and rectilinear parts of the housing. The designed louvered rectilinear part of the housing with the separation wall of the fan forms its outlet channel, the inlet window of the fan is located in the outlet nozzle of the settling chamber, the separation wall is part of the wall separating the settling chamber from the dust collector, and the outlet channel of the fan is connected with a discharge countercurrent louvered nozzle. The rectilinear louvered part of the fan housing with respect to its curvilinear part is turned towards the settling chamber, the discharge louvered countercurrent nozzle has a convergent shape, its outer wall is made louvered, parallel to the rectilinear part of the fan housing and is displaced relative to the settling chamber, and the separation partition of the dust collector chamber is made louvered.EFFECT: increased cleanliness of the air flow and reduced energy spent on cleaning the air from impurities.2 cl, 1 dwg
ethod and device for metallic objects analysis taking into account the conveyor belt properties changing // 2627207
FIELD: transportation.SUBSTANCE: method includes the steps of: transporting (S13) of the analyzing objects (3) on the conveyor belt (1); scanning (S14) of the objects (3) electromagnetic properties and the conveyor belt (1) by means of the electromagnetic sensor (9), at that the electromagnetic properties of the conveyor belt is dependent on the metallic contaminants (19), that are stuck in the conveyor belt (1); generation of the data on the belt properties, characterizing the electromagnetic properties of the conveyor belt (1), and the objects (3) analysis in accordance with the scanned electromagnetic properties and data on the belt properties. This gives the advantage, that while distinguishing the metallic and non-metallic objects, that need to be sorted, the electromagnetic properties of the conveyor belt (1) are taken into account, namely the effect of metal contaminants (19), that are stuck in the conveyor belt (1).EFFECT: reduction of the influence on the objects sorting, which in the course of time get stuck in the conveyor belt, so that the sorting results can be improved.26 cl, 7 dwg

ethod of separation of finely dispersed powders // 2625841
FIELD: technological processes.SUBSTANCE: method of separating fine dispersed powders includes the introduction of a raw material and an air stream into a separation zone, the separation of the starting material by opposing forces, the removal of the grits and the intermediate product, the precipitation of the intermediate in the precipitation devices, and the return of air to the separation zone. In the course of the movement of air between the separation zone and the precipitation devices, an additional intermediate product is separated in the inertial concentrator into a finished product coming with air into the precipitation devices and a coarse product that gravitates into the separation air return pipe and, together with air from the precipitation devices, returns to separation zone.EFFECT: increasing the efficiency of separation of fine dispersed powders.1 dwg

Grain cleaning air-sieve machine // 2625674
FIELD: agriculture.SUBSTANCE: grain cleaning air-sieve machine comprises a frame, a receiving chamber, a dividing chute, a unit of four sieve boots, two eccentric shafts, a sieve cleaning mechanism. The cleaning mechanism is equipped with a compensating device. The cleaning mechanism comprises two shafts and an electric drive. The shafts are installed in bearings on frame racks. Frames with brushes are attached to the shafts in the center. The oscillating motion of the shafts is ensured by a crank. The reciprocating motion of the frames with brushes is ensured by a connecting rod. The connecting rod is connected to the crank via a compensating device. The compensating device is made in the form of a U-shaped bracket. The bracket bottom is rigidly connected to the connecting rod. The crank is hingedly connected to the housing. The housing is installed between the bracket flanges and is rigidly connected thereto by a finger. The finger passes through the openings in the flanges and the housing. The openings in the bracket flanges are made in the form of a groove. The groove length is equal to the amplitude of the sieve boot oscillations. The groove width is equal to the finger diameter. The compensator placement is possible anywhere in the kinematic chain from the brush to the crank.EFFECT: increasing the service life of the machine.2 cl, 4 dwg
Screen module, processing device and processing unit for inorganic material // 2625577
FIELD: mining.SUBSTANCE: two-deck screen module for inorganic material contains the support elements, that are transverse beams, the upper screening device, attached over the transverse beams, the lower longitudinal supports attached under the transverse beams and holding under the mentioned lower longitudinal supports the lower screening device, forming together with lower longitudinal supports the through passage for the material flow over the mentioned lower screening device so as to direct the material subjected to screening at the mentioned lower screening device, in the longitudinal direction with respect to the given screen module. The module is equipped with the auxiliary housing for fixing the screen module to the body of the processing device for inorganic material. The screen module transverse beams are attached to the auxiliary housing. The lower screening device is fixed to the bottom of each longitudinal support. The module is attached to the processing device. The processing device contains at least one screen module.EFFECT: increase of the screening efficiency, simplification of the screening devices replacement.18 cl, 6 dwg

Dry dolomite processing line // 2625138
FIELD: chemistry.SUBSTANCE: dry dolomite processing line contains a receiving lump dolomite hopper equipped with a plate unloader, an intermediate belt conveyor for feeding lump dolomite into a drying drum equipped with a group of cyclones, a bag filter and a smoke pump for removing flue gases and trapping a fine-dispersed dolomite fraction, a transport chain feeding the captured fine-dispersed fraction into the storage hopper, consisting of a belt conveyor, a screw conveyor and the first bucket elevator, a local aspiration system connected to the storage hopper and transport-technological equipment, an impact crusher installed at the output of the drying drum, and the second bucket elevator. The input of the latter is connected to the output of the impact crusher, and the output is connected to the input of a two-sieve vibrating screen. The oversize output of the upper mesh of the two-sieve vibrating screen is connected to the input of the impact crusher. The oversize output of its lower mesh is connected to the input of the single-sieve vibrating screen, from the undersize output of which the sieved dolomite is poured onto the first input of the assembly conveyor feeding the sieved dolomite through the magnetic separator, the third bucket elevator and the first flow switch into one of the two silo jars. The line is further provided with the second flow switch, the input of which is connected to the undersize output of the two-sieve vibrating screen, and the first output is connected to the second input of the assembly conveyor, an intermediate hopper connected by its input to the second output of the second flow switch, a screw discharge feeder, the input of which is connected to the output of the intermediate hopper, the fourth bucket elevator connected by its input with the output of the screw discharge feeder, an adjustable aeroclassifier, the input of which is connected to the output of the fourth bucket elevator, as well as the third flow switch and the roller crusher. From the first output of the adjustable aeroclassifier, the isolated coarse dispersion fraction of the sieved dolomite is discharged to the third input of the assembly conveyor. From the second output, the isolated fine-dispersed fraction of the sieved dolomite is fed to the input of the screw conveyor. The under-crushed fraction of the sieved dolomite from the oversize output of the single-sieve vibrating screen enters the input of the third flow switch, the first output of which is connected to the input of the impact crusher, and the second output is connected to the roller crusher connected by its output to the input of the second bucket elevator.EFFECT: increasing the efficiency of recovering the fine-dispersed fraction from crushed dolomite, used as a mineral powder.1 dwg, 3 ex

ethod and device for separation of material based on solid particles // 2624739
FIELD: technological processes.SUBSTANCE: separating device which separates material based on solid particles by density during the grinding or crushing process, comprises: a housing, an inlet for solid particles, intended to supply the material based on solid particles to the housing, at least one sieve for size classification in the inlet, at least one inlet for fluid medium, inteded to supply the fluid medium to the lower part of the housing so that the fluid medium forms a fluidized bed together with the material based on solid particles, and at least one distribution sieve for fluid medium, intended for uniform distribution of fluid medium across the fluidized bed, the first outlet, intended to release the material based on soild particles with the first given density from the lower part of the housing and the second outlet, intended to release the material based on soild particles with the second given density from the upper part of the housing, wherein the second given density is less than the first given density. The separating deivce is used for carrying out the method of material separation comprising supply of material based on solid particles with a substantially uniform particle size through the inlet for solid particles into the housing of the separating deivce; passing of the material through at least one sieve for size classification; supply of the fluid medium to the lower part of the housing through the inlet for the housing fluid medium so that the fluid medium formes a fluidized bed together with the material based on soild particles; release of the material with the first given density from the lower part of the housing through the first housing outlet and release of the material with the second given density from the upper part of the housing through the second outlet. The second given density is less than the first given density.EFFECT: higher separation efficiency.14 cl, 11 dwg

Compartment of primary cleaning of seeds // 2624670
FIELD: agriculture.SUBSTANCE: compartment of primary grain cleaning includes a receiver with norias, air-sieve fractional grain cleaning machines, as well as hoppers for collecting grain and unused waste. The receiving device is made two-sectioned. Under the unloading heads of norias, guide valves are installed. Each of the guide valves is connected to the grain cleaning machines by means of main and reserve pipelines.EFFECT: reducing production costs while ensuring the continuous treatment of a grain heap.1 dwg

Breed assortment // 2623987
FIELD: technological processes.SUBSTANCE: assortment device (100) for the untreated potentially precious stones classification in aggregate material. The device comprises a conveying system (102) for individual transporting of a stone extracted from the aggregate material to at least one measurement location, and a measuring system (104) configured to conduct in at least one measurement location one or more of the following determinations: whether the stone contains a diamond material, whether the diamond material contains a bead and what shape the stone has. The device also comprises a distribution system (106) configured to transport the stone from the conveying system to one of a plurality of zones, depending on the results of the determination made by the measurement system.EFFECT: increased efficiency of assortment.29 cl, 9 dwg

Centrifugal-pneumatic separator of grain material // 2623761
FIELD: agriculture.SUBSTANCE: centrifugal-pneumatic separator of grain material contains an annular pneumatic separating channel with a lower branch pipe for airflow inlet and cleaned grain material outlet, a loading inlet branch pipe for the grain material to be cleaned, an outlet branch pipe for exhaust air with light impurities, a rotational conical spreader equipped with an adjusting damper for feeding the grain material into the pneumatic separating channel and equipped with several cones fixed to the common shaft at some distance from each other and having on the bottom, with the exception of the lower one, a central opening. The upper cone has the largest diameter of the cone and the opening, and the subsequent cones in the direction from top to bottom have gradually decreasing diameters. The annular pneumatic separating channel consists of the upper, middle (main) and lower parts. The main part is formed by coaxially located the outer and the inner cones, which are diffusers (in the direction from top to bottom). Their larger base is placed below at approximately the same height. The angle between the generatrices in the longitudinal diametrical cross-section of the outer cone is less than the analogous angle of the inner cone. The height of the outer cone is larger than the height of the inner one.EFFECT: improving the cleaning quality and reducing grain losses.1 dwg

Semi-automatic grain-separating machine // 2623473
FIELD: agriculture.SUBSTANCE: semi-automatic grain-separating machine contains the carousel housing 1, the racks 2, the conveyor frame, the sieve for small impurities, the sieve for defective grains, and the sieve for whole grains. The carousel housing 1 rests on the racks 2 by means of upper rollers. On the racks 2 there are two drives of hoists with shafts. From the top, to the carousel housing 1 the pneumatic channels 5 are connected. Two conveyors for small and light impurities 4, two conveyors for defective grains 6, two conveyors for whole grains 10, a conveyor for large impurities 15 and the rack of support rollers are mounted on the conveyor frame. Plates with the tray for large impurities, the tray for whole grains, the tray for defected grains, and the tray for small impurities rest on the support rollers. The sieve for small impurities, the sieve for defective grains and the sieve for whole grains are connected to the sieve frame by means of magnets. Under the carousel housing 1 there is the grain heap conveyor 14.EFFECT: reducing labour costs for separating and sorting grain.17 dwg

ethod for postharvest treatment of grain and seeds // 2622977
FIELD: agriculture.SUBSTANCE: method of postharvest treatment of grain and seeds includes grain cleaning, separation and drying. The grain heap after the combined harvester is loaded into a hopper of an aerodynamic separator, where the grain flow is subjected to both resistive and convectional heat at the same time. Then the grain stream is fed into a separation chamber of the aerodynamic separator, where additional convectional thermal effect on the grain flow is performed, the grain flow is simultaneously cleaned and separated into fractions by generated air flow, which is fed into the separation chamber. The grain separated into fractions is directed to the respective collectors and then to the storage and processing system.EFFECT: increased process efficiency and high quality end product.7 cl, 1 dwg

ethod of rhomb spar dry dressing // 2622554
FIELD: mining.SUBSTANCE: method of rhomb spar dry dressing includes drying, grinding, dust collection and deposition of pulverized dolomite from the aspiration air and waste drying gas, three-stage separation with separation of a mixture of coarse particle and micronized crushed dolomite, underground dolomite, directed to recycling stream for grinding operation after the first and third stages of the separation. In the second separation stage, carried out by adjustable aeroclassification from the mixture of coarse particle and micronized crushed dolomite, obtained after the first separation stage, additionally coarse particle and micronized crushed dolomite is separated. The coarse particle crushed dolomite is mixed with a mixture of coarse particle and micronized crushed dolomite recovered after the third separation stage. Micronized crushed dolomite obtained in the process of controlled aeroclassification is mixed with micronized dolomite precipitated during dust removal from aspiration air and waste drying gas. The total amount of micronized dolomite obtained over a controlled period of time is measured and if a reduction in the total amount of micronized dolomite in a mixture of coarse particle and micronized crushed dolomite is required, the screening grinding of the underground dolomite from the third separation stage is sent for further grinding in a roller mill, and if an increase in the total amount of micronized dolomite separated from a mixture of coarse particle and micronized crushed dolomite is required, screening grinding of underground dolomite from the third separation stage are carried out in impact crushers.EFFECT: increased efficiency of separating the finely dispersed fraction from crushed dolomite.1 dwg, 3 ex

Bucket and method of its application // 2622058
FIELD: machine engineering.SUBSTANCE: bucket (3) includes a bottom (10), side walls (11), a rear plate (12) and a connecting element (9) by means of which the bucket is connected to a working machine (1). The bucket also contains at least one screen part (6) having a lot of adjacent bars (7) which form a grid. At least one bar in the screen part is subjected to vibration by a vibration unit (16) so that the vibrating bar moves relative to the bucket.EFFECT: increased operational reliability.9 cl, 8 dwg
Gravitationally-pneumatic grain-treating machine // 2622052
FIELD: machine engineering.SUBSTANCE: gravitational-pneumatic grain-treating separator includes gravitational column, inside which there are zigzag series concave Screener surfaces for material separation by size, as well as a bootable device, pneumo-separating channel and output tubes of separated fractions. The pneumo-separating channel is divided into at least three sections, each of which have at least two levelling air flow speed of the device. Each section of pneumo-separating channel is connected to separate the sediment chamber with a fan. Each fan is connected to the filter and dust bag with dust output conveyor.EFFECT: increasing the efficiency of grain cleaning materials and the reliability of its work.1 dwg

ethod and device for processing harvested root crops // 2621485
FIELD: agriculture.SUBSTANCE: method includes the stages of optically forming hyperspectral or multispectral images of the volumetric flow of the harvested root crop to obtain a plurality of image pixels, each having a spectral profile. The image pixels are analyzed to identify discrete objects in the volumetric flow. Each identified object is classified as belonging to either acceptable root crops or unacceptable root crops, by means of generating a statistical profile associated with the object based on the spectral profile of the pixels grouped within the object. The objects classified as unacceptable are removed from the volumetric flow to provide a sorted flow of the harvested root crop.EFFECT: processing a large volume of a root crop with the possibility of sorting foreign material from a dirt-covered root crop, with minimal damage to the crop itself.17 cl, 12 dwg

Bulk material separator // 2621227
FIELD: machine engineering.SUBSTANCE: separator for separating bulk materials includes a single cylindrical body, which is separating the channel in the upper part of the body is a hopper, which establishes a conical guide and a funnel-shaped feeder, under which in the separation channel the cutter with rubber-hole is tapered, product receivers separation. Conical flow and cutter are mounted with the possibility to move vertically. Funnel feeder is corrugated. Under the feeder staggered working bodies, each of which comprises the sequence of funnel guide and cutter cone. Funnel guide gear is formed as a hollow truncated cone, the smaller base located downward. Diametrically sizes bases upstream shutoff greater diametrical sizes bases downstream blade.EFFECT: increased efficiency separation of bulk material.2 dwg
Swirl classifier of powder materials // 2620821
FIELD: power industry.SUBSTANCE: vortex classifier of powder materials comprises a cylindrical straight-flow swirl chamber with classified material output channels in the form of annular slits, a chamber with coarse fraction output channels, each of the coarse fraction output channels is designed as a divergent nozzle of bimetallic material. Cam grooves are made on the inner surface of the divergent nozzle arranged longitudinally from the inlet to the outlet. One of the output valves of the classified material in the form of the annular slit and one of the coarse fraction output channels in the form of the divergent nozzle of bimetal with longitudinally arranged grooves on the inner surface are connected to the thermoelectric generator, made in the form of a housing with a pass for a hot flow of compressed air transporting the classified material and a pass for a cold flow of compressed air transporting the coarse fractions, as well as with a set of differential thermocouples, "hot" ends of which are located in the pass for the hot flow of compressed air, and their "cold" ends are located in the pass for the cold flow of compressed air. The cylindrical straight-flow swirl chamber is covered with fine fibre basalt material from the outer surface made in the form of extended beams longitudinally placed along the length of the cylindrical chamber. The "hot" and "cold" ends of differential thermocouples respectively located on the inner surfaces of the hot compressed air pass and cold compressed air pass are covered with a dielectric in the form of nano-type film of tantalum oxide.EFFECT: increased efficiency of classifier perfomance, maintained quality of the finished product during long-term operation of the classifier.4 dwg
ethod of viziometric analysis of quality of ore and device for implementation // 2620103
FIELD: chemistry.SUBSTANCE: method viziometric analysis of ore quality involves the preparation of ore sample, the formation of the flat portion of the sample, and illumination in the zone of fixing of images formed by the measurement the flat portion of the sample in the visible spectrum, a computer image analysis calculation of mass fraction, ratio of the basic mineral forms and impregnation of minerals. To improve the accuracy of the analysis of the mineral composition of the ore, flat portion ore is formed at the lower end of the sample formed by placing a sample on a transparent plane surface, the lighting and fixing the flat image portion of the sample are carried from the bottom up in the two-dimensional scanning operation, comprising, for example, longitudinal movement along the planar portion sample frontally oriented to the flat portion of the sample measurement area. Preparation of ore sample comprises crushing ore to a particle size -5 mm, Allocation class 1 -3 mm, Washing and drying of the selected class. The method is carried out by using apparatus comprising a table for placing the sample, a source of light flux, a device for transmitting a light signal, the optical transmitter of light signal into digital, the controller. The apparatus is equipped with a device for the joint movement of the luminous flux source and means for transmitting signal light source or a light flux device to transmit the light signal and optical signal light transmitter along the table for placing the sample. The source of the luminous flux is formed as a light pipe. Device for transmitting light signal is in the form of longitudinal mirrors and longitudinal lens. The optical transducer is a longitudinal photosensitive element. Source of light flux, the device for transmitting a light signal and an optical transmitter are arranged below the table for placing the sample, with the ability of front moving along a table for placing the sample.EFFECT: improved accuracy of analysis of the mineral composition of the ore.3 cl, 1 dwg, 3 tbl

Device for thermal destruction and sizing of old asphalt // 2618333
FIELD: construction.SUBSTANCE: device comprises a loading device (1), sieves (4) and a vertical housing (2). The conversion mechanism (9) with the motor (10) is arranged in the upper part of the housing. The shaft (7) with destructive elements (8) is placed inside the housing. The housing is a set of superposed grinding chambers (3). The chambers contain in the bottom the screens in descent order of sizes of openings from the top down. In the side surface of chambers the nozzles (5) are tangentially mounted for supplying of hot heat carrier. The unloading devices (6) are arranged radially on the side surface of chambers. Destructive elements are arranged in each shredding chamber. Destructive elements are attachments in the form of a comb.EFFECT: sizing simultaneously with heating and destruction of granulate particles and simple design of the device.1 dwg
ethod for sorting breed (versions) // 2617797
FIELD: mining.SUBSTANCE: according to the method before any analysis a particle fraction is subject to some sort of cooling and registration of the temperature distributions in the form of infrared images is carried out, registration of the temperature distributions in the form of infrared images is carried out with the thermovision display device. Separation of valuable material is carried out under thermo-physical properties of the minerals, recorded on infrared images.EFFECT: increased efficiency of separation due to more accurate thermal images encouraging separation of valuable and non-valuable ore components via cooling the ore mass.13 cl, 5 dwg

Device for separation of seeds according to elasticity // 2617231
FIELD: agriculture.SUBSTANCE: invention relates to devices for separating bulk particulates of materials according to elastic properties and can be used in agriculture in purification of particulates of seed material. Device for separation of seeds according to elasticity comprises a loading and unloading hopper-dispenser with an outlet slit, steps of working bodies disposed one under the other, comprising a reflective element in the form of a truncated cone located with its large base downwards, a divider. The separator has an inner and an outer cylindrical channels. The loading and unloading hopper-dispenser has a conical feeder made in the form of a large cone located with its large base downwards, with the ability of its movement in height. The steps of the working bodies are located in an internal cylindrical channel and contain a successive conical guide formed as a corrugated truncated cone located with its large base downwards with the ability of its movement in height, a reflective element, and a funnel-shaped divider the lower part of which with an outlet annular slit is located above the conical guide below the located step. In the focal line zone of the reflective surface a slit receiving box of elastic particles is located, formed by the upper annular edge of the funnel-shaped divider and a wall of the inner cylindrical channel. The working parts of each step are made with different radial dimensions decreasing sequentially from step to step.EFFECT: increased performance and efficiency of separation is provided.2 cl, 1 dwg

Sieve pan of grain-cleaning machine // 2617132
FIELD: agriculture.SUBSTANCE: sieve pan of a grain-cleaning machine contains the power supply, the multi-tiered sieves unit including sieves installed one above the other with a longitudinal displacement, the sieve unit contains basic sieves with equal holes, solid stores, perforated stores. Each sieve in the unit consists of a perforated store, a main sieve, a solid store and a sieve with the hole sizes smaller than those of the main sieve, and greater than those of the perforated store. The length of the lower perforated stores of the lower sieves is more than the length of the upper perforated stores of the upper sieves. The solid stores of the multi-tiered sieves unit are arranged stepwise so that the lower store beginning is arranged under the upper store end.EFFECT: increased cleaning efficiency.1 dwg
 
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