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.
FIELD: process engineering.
SUBSTANCE: invention relates to separators and can be used for separation of solid particles to preset sizes, first of all, hard-to-sieve powders with bent to nodulising and plugging of screen meshes, etc. Separator comprises sieve fitted in the case. Activator coupled with multi-frequency adapter system is arranged under sieve along with vibration drive. Note here that said case is rigidly coupled with the bed. Vibration drive is composed of two or more pairs of electromagnets arranged on opposite sides of said case in opposition to allow their synchronous operation. Electromagnet coils are secured at the case. Armatures are connected with activator composed of two or more parts. Every part of the activator is connected with armatures of their pair of electromagnet. Adjacent pairs of electromagnets allow operation with phase shift. Every said pair is provided with independent frequency and/or voltage adjustment.
EFFECT: simplified design, expanded applications.
8 cl, 3 dwg
FIELD: machine building.
SUBSTANCE: invention relates to the supporting carrying element of the supporting structure intended to support the sifting surface in the vibrating sieve. The supporting carrying element of the supporting structure of the vibrating sieve contains at least one straight element, and at least one combined spacer, that at least one straight element is made as single part with at least one spacer. The spacers are located on the supports of the transverse carrying elements such that spacers have deposition on the bottom side suitable for supports shape.
EFFECT: assurance of proper location of parts of the supporting structure relatively to each other, and assurance of possibility to change settings of the vibrating sieve.
10 cl, 9 dwg
FIELD: process engineering.
SUBSTANCE: invention relates to vibratory screen with sieving surface shaped to multiple parallel sieve webs. It can be used for fractionation of crushed stone and gravel. This sieve comprises multiple structural elements and multiple sieve webs articulated with said bearing elements side-by-side. Every said web has opposite ends directed downward from sieve web through first distance and ledge arranged there between asymmetrically spaced from said opposite ends and directed downward from sieve web through second distance. Said second distance is larger than first distance of end located nearby said ledge. Appropriate ends of two adjacent webs can be received by every bearing element while first surface of said ledge can contact with bearing element outer surface.
EFFECT: higher efficiency of sieving, simplified design.
17 cl, 5 dwg
SUBSTANCE: device for cleaning seeds from the rubbish comprises a drum, a loading and an unloading devices, a rotary drive. The drum is made conical and perforated along the perimeter in the form of a multi-thread helical surface with helical grooves inside the drum in the form of pockets of curved shape, with the centres of curvature of the pockets of the curved helical surface, located inside the cross section of the drum, and is formed on the perimeter of three or more perforated strips of trapezoidal form twisted in the longitudinal direction relative to the longitudinal axis and bent in a helical line in the transverse direction on the mandrel in the form of a paraboloid of rotation with increase in their size in width, forming on the perimeter of the drum of three or more inner convex curved surfaces with centres of curvature inside the drum and formation of lapping inside the drum in the form of helical blades along the entire length of the drum from the inlet opening to the outlet opening. Along the entire length of the drum a helical surface of conical shape is mounted with a rectangular cross-section of turns, which is equipped with a device for changing the pitch by its stretching or compressing. The pitch length should be at least one full pitch of the helical surface of the drum.
EFFECT: increase in intensity of separation, the expansion of technological capabilities.
SUBSTANCE: grain cleaning machine comprises a feeding device, a sieve drum mounted on the drive shaft, consisting of cylindrical sieves mounted with longitudinal displacement, in the lower part of which the clamping webs of cylindrical shape are located, the receivers of fine, basic and long fractions, located under each other sequentially behind the sieve drum. The sieve drum consists of three blocks of cylindrical sieves with different openings. The working size of the openings of the upper block of the cylindrical sieves is smaller than the width of the treated grain seeds. The size of the openings of the sieves of the middle block is greater than the width of the treated grain seeds. The size of the openings of the sieves of the lower block is larger than the size of openings of the upper block, but smaller than the size of openings of the middle block of the cylindrical sieves.
EFFECT: increase in efficiency of cleaning of the grain cleaning machine.
FIELD: machine building.
SUBSTANCE: separator for bulk materials comprises rows of screening surfaces installed in a zigzag manner one under another, they are made as overhung pins with gaps between them. The lower part of a main channel is fitted by baffles installed over the screening surfaces and made as sieve copying surfaces. The gap between the screening surface and the baffle is related to the average thickness of processed material particles, relative content of admixtures in the processed material and the thickness of grain layer on the screening surface according to the following proportion where h - gap between the screening surface and the baffle, mm; d - average thickness of processed material particles, mm; s - thickness of grain layer on the screening surface, mm; ε - relative content of admixtures in the processed material.
EFFECT: higher operating efficiency of bulk material separator.
FIELD: process engineering.
SUBSTANCE: invention relates to separators of loose materials and can be used in metallurgy, chemical industry, mining, agriculture, etc. This screen comprises box with vertical mirror axis confined by boards over the edges of its bottom, sieving surface at box boards, feed pipe, jacket arranged outside said box to collect and continuously discharge fine product, vibrating drive and soft resilient cushions. Screen comprises extra jacket with pipe to collection and discharge of continuously discharge coarse separation product arranged inside said jacket for collection of fine products. Besides, it includes the case fitted at soft resilient cushions. Said case support said box and vibrating drive provided with two unbalance vibrators with adjustable rotational axes and possibility to be locked at required position. Feed pipe is fitted inside the box with its bottom end clearance relative to box bottom and is rigidly engaged with vibrating box or is fixed in space.
EFFECT: higher efficiency of separation and efficiency.
4 cl, 5 dwg
SUBSTANCE: invention relates to agricultural machinery industry, in particular to the method of separation of grain mixtures, and can be used for post-harvesting grain treatment, as well as for screening bulk material in other fields of industry. The grain-cleaning machine comprises a screening surface, located under the loading device, in the form of two conical sieves coaxially mounted on the axis, facing with the base to the loading device, the drive for the screening surface, the discharging channels of fractions. The drive is made in the form of a reversible motor with the control system providing reversing movements of the upper and lower conical sieves, and also batchwise feeding of the grain mixture and consisting of a control unit connected to the program setting unit and an actuator connected to the dispenser.
EFFECT: increased efficiency of cleaning and separation of grain mixture.
FIELD: process engineering.
SUBSTANCE: invention relates to screening of materials. This screen comprises flexible moulded polyurethane case with, in fact, parallel lateral extreme sections at the case opposite ends, bottom extreme section arranged between extreme lateral ends, top extreme section arranged between lateral extreme sections and, in fact, parallel and opposed to bottom extreme end, top surface, bottom surface, first moulded single-piece screen structure, second moulded single-piece screen structure, third moulded single-piece screen structure and screening meshes. First screen structure comprises first and second elements that make screening meshes. First elements are, in fact, parallel and extend across extreme lateral sections. Second elements are, in fact, parallel and extend across bottom extreme section and top extreme section. Second screen structure comprises third and fourth elements thicker than first and second elements and section extending downward, below the case bottom surface. Third elements are, in fact, parallel and extend across lateral extreme sections and have multiple first elements located there between. Fourth elements are, in fact, parallel and extend across bottom and top extreme sections and have multiple second elements located there between. First reinforcement elements are moulded integral with third and fourth elements. Third screen structure comprises fifth and sixth elements thicker than third and fourth elements and section extending downward, below the case bottom surface. Fifth elements are, in fact, parallel and extend across lateral extreme sections and have multiple third elements located there between. Sixth elements are, in fact, parallel and extend across bottom and top extreme sections and have multiple fourth elements located there between. Second reinforcement elements are moulded integral with fifth and sixth elements.
EFFECT: higher efficiency of screening, longer life.
49 cl, 9 dwg
FIELD: oil and gas industry.
SUBSTANCE: vibrating sieve with energy-saving resonant vibratory drive for intensive treatment of drilling mud and drying of drill cuttings comprises a bedplate, vibrating frame with replaceable sieve cassettes fixed at it, vibrator of linear vibrations, four springs at which the vibrating frame is installed at the bedplate, device fixing sieve cassettes at the vibrating frame, device for regulation of tilt angle of the vibrating frame, gate with control mechanism, tray with outlet ports for treated drill fluid, which is placed at the bedplate, receiving tank for drill fluid, which contains inlet nozzle with flange at input for the purpose of drill fluid supply to the vibrating frame and at output it is equipped with a rack with openings for even distribution of drill fluid along width of the sieve cassette receiving drill fluid for treatment. The vibrator is installed at the vibrating frame so that angle between surface of sieve cassettes and straight line of vibrator force direction is equal to 45°. The vibrator of linear vibrations is made as two single-pulse resonant vibrators with solenoid drive installed at force plates of the vibrating frame sides; each of single-pulse vibrators is based on electromagnet of pulling type with potential vibrations in armature of the single-pulse vibrator in regard to its stator with vibration swing up to 15 mm. Electromagnets are connected to power supply network through single-pulse vibrators control device, which is made to generate direct-current pulses with adjustable amplitude and frequency of 50 Hz. Pulse amplitude may be adjusted within limits at which amplitude of vibrations for the vibrating frame complies with the adjustable amplitude for the vibrating frame defined as per the following formula: X=Z:W2, where X is amplitude of vibrations for the vibrating frame in m, Z is the preset vibration acceleration for the vibrating frame in m/s2, W is angular rate of vibrations for the vibrating frame in rad/s; herein W=2πf, where f is frequency of vibrations in Hz. Total weight of the vibrating frame with weight of sieve cassettes, devices fixing sieve cassettes and weight of stator parts for both single-pulse vibrators is at least 7 times more than total weight of armature parts of both single-pulse vibrators.
EFFECT: improved efficiency of drill fluid treatment.
2 cl, 2 dwg
SUBSTANCE: invention relates to agriculture machine building. The air-crew device for grains cleaning includes a casing 2 with screw 1 installed inside with possibility of rotation, creating together with casing 2 a separating channel, receiving-loading device 3, discharge branch pipe, fan, hole for cleaned grains removal, and hole for air and light admixture outlet, silo for cleaned grains. Casing 2 of the air-screw device is pipe with diameter corresponding to outside diameter of the screw 1 between the casing 2 wall and screw 1 with clearance permitting screw 1 free rotation. The receiving-loading device 3 is located in top part of the casing 2 to right of the hole of the output branch pipe 6 for air and light admixtures removal, made in left bottom part of the casing 2. The discharge branch pipe with fan 4 is installed in the top part of the casing 2 to left from the hole 7 for the cleaned grains removal, it is made at end of the bottom part of the casing 2 and is connected with silo 8 for the cleaned grains with butterfly plate 9.
EFFECT: invention increases efficiency of grains cleaning , and reduces prime cost of the grains treatment, extensions scope of application.
SUBSTANCE: proposed grain- and seed-cleaning unit comprises a compartment of primary cleaning the grain heap, and the hoppers 5, 6, 7 located under it for collecting the separated fractions and a compartment of secondary cleaning the main fraction. The compartment of the primary cleaning the grain heap comprises a receiving bucket conveyor 1, a two-aspiration air-sieve grain cleaning machine 3 for flow treatment of grain heap with separation into the basic and the fodder fractions and unused wastes. The compartment of the secondary cleaning the main fraction comprises a slow-moving bucket conveyor 16, a pneumo-screening table 20, and a photoseparator 21. Between the compartments for primary and secondary cleaning the grain heap an additional compartment is placed for temporary storage of grain of the main fraction, comprising silages 14, a transverse conveyor belt 12, and a valve 11 placed over the latter. The valve 11 is made with the ability to change the feeding the grain in the hopper 5 of the cleaned grain of the compartment of the primary cleaning or on the longitudinal upper conveyor belt 13 for loading silages, as well as the lower conveyor belt 15 for feeding grain to the compartment of secondary treatment.
EFFECT: improved quality of product and reduced energy consumptions for their preparing and injury of seeds.
SUBSTANCE: invention relates to the field of agriculture and can be used for cleaning seeds and separation of impurities from the base material. The vibropneumatic separator comprises a frame, a deck, a casing, racks, drive mechanisms, and a fan. The deck has areas of preliminary delamination and separate transportation. The drive is made in the form of a crank shaft and connecting rod. The fan has a suction port and the discharge channel. In front of the receiver for the dense fraction the guide is located. The guide is made with the ability of vertical movement and adjusting of the angle between its plane and the direction of the material motion. Under the deck the shutters are mounted. The plates of the shutters are equidistant from each other and interconnected by a lever mechanism.
EFFECT: enhanced efficacy of separation of bulk materials is provided, having slight difference in density and a small amount of fractions with lower density.
FIELD: machine building.
SUBSTANCE: grain cleaner sieve boot drive comprises sieve boot, spring suspensions, motor and eccentric weights. Motor shaft axis extends through aligned centre of gravity of sieve boot and that of spring suspensions. Eccentric weights are fitted at shaft ends, their centres of gravity being located at equal distance from the centre of gravity of sieve boot and centre of gravity of spring suspensions.
EFFECT: stability of sieve boot oscillations, better quality of grain cleaning and higher reliability of the machines.
SUBSTANCE: invention relates to the agricultural machinery industry and can be used in cleaning systems of grain combine harvesters. The grain combine harvester comprising fan mechanism for creation of air flow directed through the cleaning mechanism for separation of the chaff from the grain. The fan mechanism comprises a plurality of fan modules for creation of auxiliary air flows separated from each other. The cleaning mechanism comprises an additional air inlet 44 located between two adjacent ancillary air flows, and the means of the channel narrowing of each auxiliary flow in the form of vertical baffles 52 located next to the additional air inlet 44. Narrowing of the channel is used to create a low pressure area (due to the Venturi effect).
EFFECT: low pressure area draws air directly from the environment into the air flow through the additional air inlet 44, thereby reducing the transverse component of the auxiliary flows and ensuring more uniform flow of air through the cleaning mechanism.
12 cl, 6 dwg
SUBSTANCE: air separator comprises the receiving chamber, the air channel with the lower and upper windows spaced in height for input of initial grain, the sediment chamber, the air duct and fan. Between the receiving chamber and the air channel the zigzag grain channel is placed. The zigzag grain channel is communicated by the upper end with the receiving chamber, and by the lower end - with the lower window of the air channel. The zigzag grain channel has a window to mate with the upper window of the air channel and the lower and upper chute boards. The chute boards are inclined towards the air channel. The lower end of the chute board is located at the lower window of the air channel and the upper end of the chute board is located at the upper window of the air channel. The upper chute board has a window with the shutter. The shutter regulates the distribution of grain between the upper and lower windows of the air channel. On the ends of the lower and upper chute boards the distribution finger rakes can be mounted with the ability of adjustment of their position.
EFFECT: improving the efficiency of the separation process with large supply of initial material, simplifying the design and increase in reliability of the air separator.
3 cl, 3 dwg
SUBSTANCE: device for separating flow of bulk materials comprises a stabilising container, discharge channels, planks, a housing, and branch pipes. The branch pipes are connected to the housing. The housing has a vertical partition. The planks are shifted relative to each other horizontally and located in the form of the ascending cascade in the direction of flow of the bulk material.
EFFECT: increasing metering characteristics of the device, reduction of dimensions and materials consumption of the device, expanding of the field of application.
SUBSTANCE: group of inventions relates to agriculture. At work on slopes of a grain combine harvester the cleaner shoe is communicated with the additional lateral oscillations. At the lateral oscillations the joint movement of the heap and the sieve during their movement up the heeling is provided. When movement of the sieve down the heeling the relative sliding of the heap up the sieve is provided. The device for dynamic levelling of heap layer while cleaning grain combine harvester comprises the sidewalls for suspension of sieves, the balancers of the sieve boot, the sieve and the pendulum of the gyroscope. The lateral oscillations are provided to the sieve boot at work on slopes by the vibrators of the right and left heeling, made in the form of a hydraulic cylinder with a rod and having rollers. The sieve boot interacts with spring shock absorbers through the guides. The volumes of the rod and the piston hydraulic cylinder cavities are made in the ratio of 1:2.3.
EFFECT: use of the group of inventions increases the efficiency of grain cleaning at work of the harvester on slopes by levelling the heap layer across the width of the sieve.
7 cl, 6 dwg, 3 tbl
SUBSTANCE: invention relates to the agricultural machinery industry and can be used in the construction of a grain combine harvester. The louver screen of cleaning the grain combine harvester comprises a frame, an adjustment mechanism of opening and louver. The louver is made in the form of combs. The combs of the central part of the sieve are made in the form of a bent movable plate. The combs of the side part of the sieve are made in the form of upper movable and lower fixed plates. The lower fixed plates are mounted on the frame with the possibility of their removal. The differential distribution of air flow is provided both along the length and width of the sieve in dependence of the load conditions.
EFFECT: reduced losses of grain behind the thresher of the grain combine harvester and removal of free grain to the tailings spiral conveyor in case of uneven load of the upper sieve in width.
2 cl, 5 dwg
SUBSTANCE: invention relates to the agricultural machinery industry, in particular to the machines for cleaning and sorting the grain materials. The pneumatic system of grain cleaner comprises aspirating channels of preliminary and basic cleanings, a sediment chamber, a cross flow fan, a throttle valve to control the air speed in the aspirating channels, a charge distributor, a feeding roller, an inertial dust collector with two parallel functioning louver-counterflow cleaners, and general dust-collecting chamber, the devices of discharge of cleaned grains and wastes. The dust-collecting chamber of the inertial dust collector is provided with a vertical partition mounted on the axis of its symmetry and with a gap relative to the upper wall, equal to the 1-3 heights of output windows of the louver-counterflow cleaners.
EFFECT: improving the efficiency of purification of exhaust air.
FIELD: agricultural engineering.
SUBSTANCE: invention is designed for adjusting size of screen cells in grain harvesters. Proposed adjuster is installed in harvester tailer unit and it executes vibratory motions together with screen. Sizes of screen cells are adjusted by electromechanical drive power action of electromechanical drive is directed at angle to direction of vibratory motions of screen. In process of adjusting, size of cell is changed in one direction and control signal is generated to set required size of cell. Actual size of cell is determined automatically by measured value of adjustment.
EFFECT: high accuracy of result at repeated measurements.
9 cl, 5 dwg