Discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl (B04B1/20)

B04B1/20                     Discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl(135)

Protective shield for auger conveyor scraper // 2628785
FIELD: machine engineering.SUBSTANCE: protective shield contains a support and a wear-resistant insert, attached to the scraper of the auger press, a centrifuge, a gravitation filter. The support and wear-resistant insert are connected therebetween by means of mechanical locking system. At that, support attached to the scraper provides that the insert is secured with mechanical fixation only. The support has at least one opening into which the insert is placed. The insert consists of a plate and at least one pin connected thereto. At least one pin provides placement of the insert into the support. The auger conveyor, for example, auger press, centrifuge, gravitation filter, contains a number of protective shields installed on the auger along its perimeter.EFFECT: provide protective shields withstand the arising mechanical and tribological stresses.8 cl, 12 dwg

ethod of regulating the volume flow of a coal-kerozine suspension and a device for manufacturing a burned coal // 2628524
FIELD: mining engineering.SUBSTANCE: invention describes a method for controlling the volumetric flow rate of a coal-kerosene suspension in which, during the separation of the solid and liquid phases by feeding the dehydrated coal-kerosene suspension to a centrifugal separator of the decanter type and separating the coal-kerosene suspension into a solid fraction and a liquid fraction, the target electric current fed to the engine to rotate it and drive the screw conveyor of the centrifugal separator of the decanter type is determined such that the liquid level In the tank for a coal-kerosene suspension fed to a centrifugal separator of the decanter type, it can take a constant value; the target opening degree value is determined based on the difference between the target electric current value and the actually measured value of the electric current supplied to the motor; and the degree of opening of the flow control valve, which is located in the middle of the feed line for introducing the coal-kerosene slurry into the centrifugal separator of the decanter type, is adjusted depending on the target degree of opening. Also, the options for ways to regulate the volume flow coal-oil suspensions and devices to perform these techniques are described.EFFECT: ability to effectively prevent overloads and mechanical damages of a centrifugal separator of the decanter type or to reduce the quality of separation of the solid and liquid phases, the ability to stabilise the process of obtaining upgraded brown coal.6 cl, 5 dwg

Processing method for emulsion produced at hydrometallurgical metal recovery // 2624310
FIELD: metallurgy.SUBSTANCE: in the method for centrifugal processing of an emulsion containing solids obtained by hydrometallurgical metal recovery, re-treatment takes place in at least one three-phase decanter (1) to produce the first lighter liquid phase (5), the second liquid phase (6) and the solid phase (7). The method is characterized by stages of determination of the actual density of the first liquid phase (5), of comparison of actual values with the specified value of the density of the first liquid phase (5) and of adjustment of outflow pressure of the first liquid phase as a function of a specified parameter, depending on the comparison of the determined actual/desired value.EFFECT: improvement of the emulsion processing method and improvement of the hydrometallurgical metal recovery process.5 cl, 7 dwg

Scroll centrifuges with solid rotor // 2616060
FIELD: machine engineering.SUBSTANCE: scroll centrifuge with solid rotor comprises a rotatable reel, the axis of rotation orientated in particular horizontally, a screw rotatable and mounted in the reel, at least one outlet passage disposed at an angle to the axis of rotation of the auger with a continuous centrifuge rotor for discharging solids from the drum to the drum rotor. Wherein at least one outlet channel is connected with the solids collecting chamber, which partially surrounds the drum rotating during operation, and which does not rotate during operation. In the solids collection chamber at least one hose is located , which is not closed in its circumferential cross-section. A hose is made of elastic material and is designed as an elastic element or as a hybrid element made partly of elastic material and partly of a rigid material. Solids collection chamber is designed so that there is no differential pressure generation under the action of compressed air, and the hose is installed in the chamber without providing tightness. Unlocked hose is circumferentially mounted substantially in a ring shape in the particulate collecting chamber so that mentioned hose is substantially completely surrounds the reel in the area of the discharge passage except solids outlet or withdrawal in the collecting container. The cross-section of an open circle on the hose section is C-shaped, U-section, or Ω-shaped.EFFECT: reducing the number of accumulated dirt on the walls of the solids collection chamber.6 cl, 5 dwg

Centrifuge and outlet hole assembly of said centrifuge providing lower power consumption // 2593775
FIELD: machine building. SUBSTANCE: group of inventions relates to a rotary machine, in particular to decanter centrifuge, and to the liquid phase outlet hole assembly. Rotary machine comprises a drum installed with the ability of rotation around the axis to create cylindrical bath for the loaded pulp, herewith the drum has a heavy phase outlet hole, a support plate arranged onto one of the longitudinal ends of the drum, at least one outlet hole made in the support plate, and the liquid phase outlet hole assembly. Liquid phase outlet hole assembly is configured with the ability of been mounted above the outlet hole of the rotary machine and has a flange and an inlet hole made in the flange. Liquid phase outlet hole assembly contains at least one open straight channel with longitudinal axis. Herewith the longitudinal axis of the said channel passes at an acute angle to the flange and the said channel is extended along the longitudinal axis. EFFECT: improved efficiency of power consumption. 15 cl, 12 dwg

Centrifuge and torque control method // 2581372
FIELD: technological processes.SUBSTANCE: group of inventions relates to screw centrifuge control torque at input of screw centrifuge geared shaft. Auger centrifuge with solid rotor for processing of drilling mud with rotating drum and with rotary screw has driving device to drive drum and screw with drive motor and reduction gear unit for creation of gear ratio between drum rotation speeds and screw during centrifuge operation. At that, reduction gear unit inlet reducing shaft is rigidly fixed without possibility of rotation by means of reloading lever made with possibility of changing shape in case of overload torque. Reloading lever, one end of radially remote from axis of rotation of reduction gear input shaft is detachably connected directly to inlet gear shaft or with part rigidly connected without possibility of rotation with inlet gear shaft. Method for control of torque at screw centrifuge input gear shaft with solid rotor during treatment of drilling mud has following stages: a) cleaning of drilling mud, if torque screw centrifuge with solid rotor lower than first limit value, b) at least one working parameter of screw centrifuge with solid rotor, if torque reaches first limit value or exceeds it, c) disconnection of screw centrifuge with solid rotor if torque reaches second limit value or exceeds it, and d) automatic or controlled actuation of protection against overload torque, if change of torque moment in time exceeds limit value dM/dt.EFFECT: providing protection against overload torque on fixed shaft, as well as stops centrifuge only in case of emergency failure.15 cl, 6 dwg

Drive in screw type centrifuge // 2544703
FIELD: machine building.SUBSTANCE: invention relates to drives for the screw type centrifuges. Drive for the screw type centrifuge including the rotating drum and coaxially installed screw; it contains the drum drive motor and screw motor. The screw motor is connected with the screw shaft by means of the gearbox. The gearbox without possibility of rotation is connected with the drum drive shaft. The gearbox for the screw drive is installed with possibility of rotation in the fixed casing, and has hollow output shaft, that via the coupling is connected with the hollow drum drive shaft.EFFECT: increased gearbox reliability due to the gearbox installation on the foundation, thus decreasing danger of its destruction.12 cl, 9 dwg

Centrifugal separator with inlet fitted by wear-resistant elements and feeding zone element with wear-resistent elements // 2540601
FIELD: machine building.SUBSTANCE: centrifugal separator, particularly a decanter centrifuge, comprises a casing rotating around, preferably horizontal, axis of rotation passing in the longitudinal direction of the rotating casing. The rotating casing comprises a drum and a screw conveyor set coaxially inside the said drum and rotating around the rotation axis. The screw conveyor comprises a bar body carrying at least one spiral turn, and an inlet chamber is provided in the bar body. A centrifugal separator comprises a separator chamber limited by the said drum radially to outside and by the external periphery of the bar body radially into inside. The inlet chamber consists of two cross walls, in particular, a proximal cross wall and a distal cross wall and at least two longitudinal walls passing in the longitudinal direction between the proximal cross wall and the distal cross wall. The proximal cross wall is provided with a central hole to lead-in the supplied material to the inlet chamber, the feeding holes to lead-in the supplied material to the separator chamber from the inlet chamber are provided between the adjacent longitudinal walls. The cross walls and longitudinal walls have internal surfaces in the outer periphery of the bar body, the said internal surfaces are turned to the inlet chamber. The separator comprises a feeding path passing from the central hole via the inlet chamber and via the feeding holes. Wear-resistant elements inserted through the feeding holes completely protect the internal surfaces of the distal cross wall and longitudinal walls from the feeding path. The wear-resistant elements include an element of the longitudinal wall at each longitudinal wall, the longitudinal wall element has a bent longitudinal section protecting at least part of the internal surface of the longitudinal wall and at elast one flange section protecting the part of the distal cross wall. The centrifugal separator comprises an element of the feeding zone to be installed in the bar body of the screw conveyor. The inlet chamber is equipped by the said feeding zone element.EFFECT: decreased inlet chamber wear.17 cl, 13 dwg

Centrifugal separator // 2538583
FIELD: machine building.SUBSTANCE: centrifugal separator comprises a rotor rotating around the rotation axis, the rotor includes a separation chamber with an inlet for liquid mixture containing solid particles, at least one outlet for the liquid separated from the liquid mixture, and an outlet for the separated solid particles, as well as a screw conveyor installed to rotate inside the rotor around the rotation axis with the speed different from the rotor speed. The screw conveyor is fitted by at least one screw turn to move the separated solid particles in the rotor to the outlet for solid particles and out of it. The screw turn is equipped by wear-resistant elements set along its edge. The wear-resistant elements are distanced from each other with the intervals between the mutually adjacent wear-resistant elements. A support device for a screw conveyor comprises a holding element attached to the rotor and set in the central part of the outlet for solid particles. The holding element and the end of the screw conveyor can interact so that with the possibility of rotation the holding element receives and supports the screw conveyor end to provide for a gap between the wear-resistant elements on the screw turn and inner rotor wall.EFFECT: improved wear protection of a screw conveyor in a centrifugal separator.17 cl, 3 dwg

Centrifugal separator // 2536146
FIELD: machine building.SUBSTANCE: centrifugal separator comprises a rotating body which rotates in the rotation direction around the rotation axis when in work, the rotating body comprises a drum having a base provided on the rear long end of the drum, the said base is turned to the first rear long zone of the centrifugal separator behind the said base. The separator comprises at least two output channels passing through the said base, the output channels are communicated with the respective overflow edges at the respective levels, in the course of operation the overflow edges specify the level of liquid in the drum and the level of interface between two liquid phases in the drum. The first of the output channels pass axially to the first output hole providing for discharge of liquid from the rotating body into the first rear long zone in the course of operation; the second of the output channels comprises a passage leading to the second output hole providing for discharge of liquid from the rotating body into the second rear long zone set behind the first rear long zone, in the course of operation. The second output hole is provided so that its distal edge in respect to the rotation axis is placed not over the level of an overflow edge communicating with the second output hole. The separator comprises a rotating body part of shaft type passing coaxially to the rotation axis from the base; the shaft-type part supports a flange, and the above passage passes from the base via the flange to the second output hole, the flange divides the first and the second rear long zones, as well as a casing for the rotating body to be placed in, the casing comprises a proximal chamber for the liquid discharged from the rotating body through the first output hole and a distal chamber for the liquid discharged from the rotating body through the second output hole, the said chambers are separated by a partition wall. The casing including the partition wall is divided into at least two parts comprising a cover, the flange is embraced by an annular seal, the partition wall interacts with the annular seal at least when the cover is closed.EFFECT: reduced power consumption by the centrifugal separator due to the removal of heavy and light phases from the rotating body at relatively small radius or distance from the rotation axis.10 cl, 15 dwg

Centrifugal separator and discharge element of centrifugal separator // 2534768
FIELD: machine building.SUBSTANCE: centrifugal separator contains rotating body, the body rotates in the direction of rotation relatively to axis of rotation, at that the axis of rotation passes in the longitudinal direction of the rotating body. The rotating body contains drum, the drum includes base installed at one longitudinal end of the drum and looking on the first rear longitudinal area of the centrifugal separator, the separator is installed behind the base, first discharge casing installed in the first longitudinal area, the casing is connected with the first discharge channel to receive liquid from the first discharge channel. The first discharge casing contains the first discharge hole to discharge the liquid from the rotating body, at that the first discharge hole contains the first overflow edge, determining during normal use the liquid level in the drum. The first discharge casing is made with the possibility of rotation relatively to the first adjustment axis, and the first discharge casing contains the first side wall shifted from the first adjustment axis. At that the first discharge hole is made in this first side wall such that the overflow edge is the rear edge of the discharge hole relatively to rotation direction of the drum. The discharge element for the centrifugal separator contains the discharge casing and connecting part intended for connection with possibility of rotation of the discharge element with base of the centrifugal separator to rotate the discharge element relative to the adjustment axis. The discharge casing passes behind the base, at that the discharge casing contains the side wall shifted from the adjustment axis, and in the side wall the discharge hole is made, the discharge hole contains the overflow edge such, that it is the rear edge of the discharge hole relatively to the rotation direction of the drum of the centrifugal separator, when the discharge element is installed in the centrifugal separator.EFFECT: assurance of possibility of liquid level adjustment in the drum with adjustment of the radial distance from the overflow edge to the axis of rotation.22 cl, 9 dwg

Centrifugal separator // 2529538
FIELD: process engineering.SUBSTANCE: invention relates to centrifugal separators. This separator comprises spinning bin, conveyor arranged coaxially therein to spin therewith, separation chamber confined radially from outside by said bin and radially from inside by said conveyor. Note here that the latter incorporates acceleration chamber. Note here that loading accelerator is arranged coaxially with conveyor inside acceleration chamber to spin about rotational axis at rpm lower than that of conveyor. Acceleration chamber has loading holes for loading material into separation chamber. Loading accelerator has discharge hole to unload loading material via discharge hole to discharge into conveyor acceleration chamber. Loading holes extend to first axial section and discharge holes extend to second axial section. Note here that first and second axial section overlap to make loading material from discharge hole in direction with radial and circumferential components.EFFECT: improved loading owing to flow accelerator, ruled out flow turbulence.10 cl, 5 dwg

Centrifugal separator, wear-resistant element and set of wear-resistant elements for centrifugal separator // 2528991
FIELD: machine building.SUBSTANCE: centrifugal separator comprises a drum rotating around the rotation axis passing in the longitudinal direction of the drum, the drum consists of a conical part with a narrow outlet end comprising radial surface, an end face element set opposite the radial surface, a variety of separating elements passing between the radial surface and the end face element and providing for outlet ports between the adjacent separating elements, and wear-resistant elements closing the surfaces on the outlet ports. The wear-resistant elements comprise a bushing element with part of a jacket embracing the respective separating element at least around the sufficient part of the circumferential length of the said separating element to prevent slipping out of the bushing element in the direction perpendicular to the axial direction. A set of wear-resistant elements for a centrifugal separator comprises bushing elements fitted by the jacket sections embracing the respective separating element at least around the sufficient part of the circumferential length of the said separating element to prevent slipping out of the bushing element in the direction perpendicular to the axial direction, and plate elements to close part of the radial surface between the adjacent bushing elements.EFFECT: higher strength of separating elements.18 cl, 9 dwg

Centrifugal separator // 2500481
FIELD: process engineering.SUBSTANCE: set of invention relates to rotary separator for separation of solid particles from fluids mix. Proposed separator comprises rotor with separation chamber with outlet of separated fluid, slime outlet for separation of solid particles, screw conveyor to run inside said rotor at rpm that differs from that of said rotor to force separated solid particles from separation chamber towards slime outlet and rotor and screw conveyor drive. Separator comprises control unit to control drive to run rotor at first rpm in separation phase and at second rpm in particle discharge phase. In compliance with the method of separation, said rotor is drive to feed the mix inside separation chamber confined by rotor body. Thereafter, mix is rotated inside said chamber to separate fluid therefrom and discharge it via first outlet. Screw conveyor runs inside the rotor about rotational axis to carry separated particles from separation chamber towards slime outlet and therefrom. Note here that rotor is run at first rpm in separation phase and at second rpm, lower than said first one, in particle discharge phase.EFFECT: higher efficiency of separation.19 cl, 1 dwg

Decanter centrifuge and screw conveyor // 2486013
FIELD: process engineering.SUBSTANCE: set of invention relates to centrifuge with screw conveyor for separation of material into light and heavy fractions. Proposed centrifuge comprises rotary elongated drum with separation chamber with cylindrical wall, and screw conveyor. Screw conveyor is arranged inside separation chamber coaxially with aforesaid drum. Screw conveyor comprises hub with lengthwise steel tubular part and steel screw secured to the latter. Additionally, said hub includes internal lengthwise case arranged coaxially with said lengthwise steel tubular part through, at least, the part of the latter. Internal lengthwise case is made from first material with specific stiffness exceeding that of steel of lengthwise tubular part.EFFECT: no contact between screw and drum cylindrical wall, ruled out wear of screw and drum wall.11 cl, 3 dwg

Centrifuge with screen bowl // 2482922
FIELD: process engineering.SUBSTANCE: set of invention relates to filtration centrifuges with screen bowl and to separation of suspensions to fluid and solid components. Centrifuge comprises conveyor including rotary hub, at least, one helical blade extending radially from the hub and in axial direction of sad hub and bowl surrounding the conveyor and rotating about the axis. Said bowl comprises cylindrical section extending from conveyor inlet and screen tapered section extending toward conveyor outlet end. Screen tapered section is arranged at the angle to hub axis to decrease friction of solids to the level that allows the cake formed by said solids to perform controlled motion toward screen tapered section with minimum counter pressure but does not allow it to brake off said section and out from centrifuge. Note here that, at least, one helical blade does not extend along screen tapered section. Proposed method comprises separating solid component from liquid component of the suspension fed inside the bowl arranged around conveyor hub. After suspension feed, solid particles are displaced along bowl cylindrical section in the first direction while larger portion of liquid in the second direction opposite the first one using, at least, one helical blade extending from conveyor hub. Thereafter, solid particles are displaced from cylindrical section along bowls screen tapered section. Screen tapered section is arranged at the angle to hub axis to decrease friction of solids to the level that allows the cake formed by said solids to perform controlled motion toward screen tapered section with minimum counter pressure but does not allow it to brake off said section and out from centrifuge.EFFECT: higher efficiency and reliability.15 cl, 2 dwg

Auger centrifuge // 2458744
FIELD: process engineering.SUBSTANCE: invention relates to separation of mixes by centrifugal forces and may be used in oil, gas and chemical industries, etc. Auger centrifuge comprises housing accommodating tapered cylinder rotor, solid fraction discharge openings, auger with cover made up of section attached to said housing and hollow thrust part, feed pipe and system to discharge heavy and light liquid fractions. It comprises also chambers with pressure discs arranged in said tapered cylinder rotor. Auger cover hollow thrust part houses thrust O-ring and has annular groove with channels. Fixed pressure disc post is provided with thrust O-ring fitted in cartridge to displace axially. Cartridge outer surface represents multistart thread. Both O-rings are displaced from inner cylindrical surface of cover hollow section. Inner surfaces of said rings feature inclination toward contact surface. Two seal elements are fitted in rotor cover, level with groove, to make a chamber, and two drain holes are made therein to communicate said chamber with out-of-rotor space.EFFECT: higher reliability, expanded operating performances.6 cl, 5 dwg

Centrifuge with horizontal rotor // 2456084
FIELD: process engineering.SUBSTANCE: invention relates to worm centrifuges. Proposed centrifuge comprises horizontal rotor with cylinder, worm arranged in said cylinder to rotate at rpm other than that of cylinder, bearings for cylinder to run therein and springs to cushion the latter on bed. At least two springs are arranged on cylinders ends to support it. Springs are arranged vertically or, in fact, vertically. Rotor or cylinder length-to-diameter ratio exceeds, preferably, 2, more preferably, 2.5, and, in particular, 3. Springs cushioning the cylinder on bed work in contraction in direction other than radial.EFFECT: efficient cushioning.23 cl, 3 dwg

Centrifugal separator // 2454283
FIELD: process engineering.SUBSTANCE: invention relates to centrifugal separator. Centrifugal separator comprises rotary drum, separation chamber in said drum, base arranged on drum rear lengthwise end, and discharge chamber. Said base comprises first discharge opening confined radially by drain baffle at first level. Discharge chamber communicates with separation chamber via first discharge hole and is communicated with discharge chamber outlet open at second level to drum outside space in second lengthwise zone ahead of rear lengthwise zone. Discharge chamber outlet is equipped with outlet nozzle with discharge direction having a component opposite the rotational direction. Overflow inlet is arranged in discharge chamber at third level between first and second levels to communicate with overflow outlet open into drum outside space in second lengthwise zone.EFFECT: recovery of kinetic power from liquid phase released in zone located ahead of rear zone confined by drum base.13 cl, 8 dwg

Scroll centrifuge with the solid drum and outlet apertures for the partial discharge and removal of the products residuals from the drum // 2442659
FIELD: scroll centrifuge.SUBSTANCE: scroll centrifuge comprises the solid drum mounted to be rotated about the horizontal axis of rotation, the scroll located in the drum to be rotated, the device for the continuous unloading of the solid phase on the one end of the drum and the device for the continuous unloading of the liquid phase on the opposite end of the drum, and at least one or several additional alternating outlets; at least one or several outlet apertures are coupled with the ring which is applied as a control gate and can be axially shifted relatively the drum axis and rotates along with the drum during the operation; the driving mechanism is connected to the ring securing its movement to the opening position of the outlet aperture or apertures and to the closing position of theses apertures; the ring is mounted to be shifted on the external perimeter of the drum lid.EFFECT: simplification of the scroll centrifuge construction and securing of the simplicity and high efficiency of its operation as this construction excludes application of valve units subject to malfunctioning and of separate latches and provides opening and closing of all the inlet and outlet apertures by means of the single driving mechanism.18 cl, 5 dwg

Centrifugal separator and liquid phase discharge element // 2428259
FIELD: process engineering.SUBSTANCE: set of invention relates to centrifugal separator and liquid phase discharge element. Centrifugal separator comprises revolving cup with lengthwise rotational axis. Radial direction passes perpendicular to lengthwise direction. It comprises also base plate arranged on cup end to extend therefrom, and box extending in zone of outlet on plate outside. Box comprises lateral side with normal line arranged at acute angle to cup periphery in area of aforesaid box, and outlet made in box sidewall. Outlet is confined radially by web with overflow edge to run inside toward above preset liquid level. Liquid phase discharge element to be mounted above outlet comprises flange with inlet made therein, box extending in area of inlet on side of said flange. Box comprises lateral side with normal line arranged at acute angle to cup periphery in area of aforesaid box, and outlet made in box sidewall. Outlet is confined by web with overflow edge.EFFECT: reduced power losses, 10% to 50% power increase.14 cl, 8 dwg

ethod and device for cleaning fluid in centrifugal separator // 2423165
FIELD: process engineering.SUBSTANCE: set of invention covers methods and devices intended for cleaning fluids of impurities in centrifugal separator with additive facilitating separation and having density higher than that of fluid to bind aforesaid impurities. Centrifugal separator comprises rotor case made to revolve about rotational axis. Fluid to be cleaned is fed via inlet into separation chamber confined by rotor case for separated particles to be discharged via first outlet and cleaned fluid to be discharged from second outlet. Fluid is mixed up with certain amount of aforesaid additive and cleaned therein by contaminating particles of said additive forced toward rotor case periphery in rotation. Minor flow of said additive and particles bonded therewith is discharged via first outlet from separation chamber, while cleaned fluid flow is discharged from separation chamber via second outlet. Said additive and particles bonded therewith are carried in rotor case inner space by, at least, one transfer turn toward first outlet and discharged therefrom.EFFECT: better separation.21 cl, 3 dwg

Centrifuge with continuous unloading of precipitate // 2417844
FIELD: process engineering.SUBSTANCE: invention relates to separation of suspensions and may be used to separate solid phase from liquid phase in coal preparation, chemical, processing and food industries, treatment of effluents and household waste waters. Proposed centrifuge comprises housing, rotor made up of cylindrical and conical parts, screw arranged coaxially inside said rotor, said screw being made up of hollow drum with spiral coils secured thereon. There is a clearance between screw drum and rotor to accommodate screw spiral coils. Rotor conical part has precipitate unloading openings while rotor cylindrical part has centrifuge centrate unloading openings. There are webs arranged ahead of precipitate unloading openings to extend beyond rotor conical part generator by 0-0.95 of the height of gap between screw drum and rotor in the zone of said webs that feature thickness making 0-0.5 of screw spiral pitch. At 0-2.5 of screw spiral pitch from the webs, screw spiral has height making 0-0.9 of clearance between screw drum and rotor.EFFECT: reduced moisture content of precipitate.3 cl, 2 dwg

Suspension separation centrifuge // 2346752
FIELD: mechanics.SUBSTANCE: proposed centrifuge incorporates a tapered-cylinder hollow rotor housing an auger to move precipitate and made up of a housing representing a drum and a tape helix fitted on the rotor outer surface, its edge being reinforced by protective plates. The said protective plates represent the tape made up of separate sectors attached on to both helix sides all over its length to a chute open, in its cross section, towards the rotor wall.EFFECT: auger longer life, lower repair costs.2 cl, 2 dwg

Centrifuge with hydraulically-driven rotational speed differential // 2325951
FIELD: mechanics; hydraulic equipment.SUBSTANCE: subject of the invention is a centrifuge incorporating a hydraulically-driven rotation speed differential. The centrifuge accommodates a drum to run inside it while a screw is arranged inside the drum to run inside the latter. The screw rotational speed differs from that of the drum, both being driven by a central stationary motor unit. The hydraulic motor fed from the hydraulic pump controls the rotational speed differential the case of which, on the one side, and its rotor, on the other side, are connected in between the drum and screw. The hydraulic motor and hydraulic pump are mounted to run together, while the hydraulic pump rotor seats on a supporting lever outside the centrifuge running parts and does not run together with the pump and motor. Here, the variation in the amount of fluid fed from the hydraulic pump to the hydraulic motor is effected by hydraulically-controlled regulators mounted to run together with the drive. The proposed invention allows decreasing the overall sizes of the device and possible leaks in the device operation.EFFECT: decrease in fluid leakage in operation of the smaller size device.9 cl, 17 dwg

Screw conveyor for decanter centrifuge // 2317859
FIELD: mechanical engineering; centrifuges.SUBSTANCE: invention relates to screw conveyor designed and made for use in decanter centrifuge for separating hard particles from fluid medium. Proposed decanter centrifuge contains rotor with mixture input, hard particles output and output for liquid cleaned from hard particles. Rotor is made for rotation around axis R at first speed. Screw conveyor arranged in rotor is made for rotation around axis R at second speed differing from first speed. Screw conveyor has central housing passing along axis R. device contains at least one helical line of conveyor passing like helical thread along central housing and around the housing and resting on the housing so that flow passage is formed around housing. Moreover, device includes at least one partition which cross path of flow between different parts of helical line of conveyor to preclude free travel of liquid and hard particles along flow path to output of hard particles, and two initially separated parts. Each of said parts has section of helical line of conveyor, and both parts are held axially together. Partition forms separate member held between parts of screw conveyor when they are held together in axial direction.EFFECT: improved reliability of construction, facilitated assembling.

Centrifuge with auger device to discharge sediment // 2315664
FIELD: mechanical engineering; centrifuges.SUBSTANCE: invention relates to centrifugal devices with auger discharge of sediment and it is designed for wet mechanical separation of mixes of hard substances. Proposed centrifuge contains rotor installed for rotation around horizontal axle and consisting of one cylindrical drum and two conical drums. Auger conveyor installed in rotor for rotation around the same axle is provided with two opposite helix augers. Centrifuge contains also devices for axial delivery of mix of hard substances into centrifuge and discharge holes for settled and floated product arranged in zone of ends of conical drum walls. Moreover, distributing device is installed on rotor to radially get inside and create different levels of liquids for floated-up and settled product. Separating device contains support ring leaving free ring clearance relative to shaft of auger conveyor.EFFECT: provision of moisture content in floated-up and settled products independent from each other.13 cl, 9 dwg

Screw centrifuge with solid rotor // 2283188
FIELD: centrifuges.SUBSTANCE: screw centrifuge comprises rotating drum that has the horizontal axis of rotation and embraces the centrifugal chamber, rotating screw mounted for permitting rotation inside the drum, at least one device for discharging liquid, and at least one device for discharging sediment. The liquid is discharged with the use of cutting disk downstream of which is the valving chamber. The valving chamber of the centrifuge is made of the pressure-tight valving chamber. The pipeline for supplying valving liquid is directly connected to the chamber. The screw centrifuge has the siphon disk that projects into the centrifugal chamber in radial direction.EFFECT: simplified structure and enhanced convenience of servicing.17 cl, 2 dwg

Centrifuge with wear-resistant strengthened inlet port // 2279925
FIELD: centrifuges.SUBSTANCE: centrifuge comprises wear-resistant strengthening member that passes along the back separating surface in viewing in a section perpendicular to the direction of the axis of rotation that passes around the back separating surface. The member is mounted so that a part of the concave back side of the wear-resistant strengthening member facing the back separating surface is located inside the inlet chamber. The inner section is located behind the front point of the back separating surface in viewing in the direction of rotation. During operation, the central housing prevents the wear-resistant strengthening member against movement forward along the tangent in the direction of rotation. The bearing surface prevents the wear-resistant strengthening member against radial movement.EFFECT: enhanced convenience of assembling and disassembling.12 cl, 5 dwg

Decanting centrifuge // 2279924
FIELD: centrifuges.SUBSTANCE: device comprises screw transporter provided with the deflecting baffle that separates the chamber into cylindrical and conical outlet sections. The intermediate section that is interposed between the separating section and outlet section is located directly upstream of the deflecting baffle. The velocity of the screw transporter in the intermediate section is higher than that in the separating section directly upstream of the intermediate section where the nominal velocity is changed by changing the screw step.EFFECT: reduced cost.9 cl, 4 dwg

Centrifuge with an additional section of the rotor // 2223151
The invention relates to equipment for separating suspensions under the influence of centrifugal force

Centrifuge for separation of suspensions // 2185892
The invention relates to equipment for separating suspensions and can be used for wastewater treatment

Sedimentation centrifuge // 2181075
The invention relates to equipment for separating suspensions under the influence of centrifugal force

Screw centrifuge // 2127156
The invention relates to food industry, namely, equipment for the clarification and stabilization of grape juice and wine

Sedimentation centrifuge // 2127155
The invention relates to food industry, namely, equipment for the clarification and stabilization of grape juice and wine

Screw centrifuge for grape juice and wine // 2126721
The invention relates to equipment for the clarification and stabilization of grape juice and wine

Sedimentation centrifuge for grape juice and wine // 2126720
The invention relates to food industry, namely, wine

Screw centrifuge // 2086310
The invention relates to equipment for the clarification and stabilization of grape must or wine stock

Sedimentation centrifuge // 2062660
The invention relates to equipment for the clarification and stabilization of grape juices and wine

Sedimentation centrifuge // 2041741
The invention relates to equipment for the clarification and stabilization of the secretion of salts of tartaric acid and grape must or wine stock and can be used in the canning industry and the wine industry

Centrifuge for separating suspensions // 2039609
The invention relates to equipment for separating the suspension into liquid and solid fractions in the centrifugal field and can be used in chemical, petrochemical and other industries

Screw centrifuge for clarifying liquids // 2038163
The invention relates to equipment for centrifugal separation of solid and liquid phases and can be used in the food industry for the separation and clarification of juice
 
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