CN110548605A - Pushing type centrifugal machine - Google Patents
Pushing type centrifugal machine Download PDFInfo
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- CN110548605A CN110548605A CN201910887633.1A CN201910887633A CN110548605A CN 110548605 A CN110548605 A CN 110548605A CN 201910887633 A CN201910887633 A CN 201910887633A CN 110548605 A CN110548605 A CN 110548605A
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- drum
- rotary drum
- oil
- bearing
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- 239000000463 material Substances 0.000 claims abstract description 99
- 238000003825 pressing Methods 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000002131 composite material Substances 0.000 claims abstract description 7
- 238000009826 distribution Methods 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims description 24
- 238000005406 washing Methods 0.000 claims description 24
- 239000003638 chemical reducing agent Substances 0.000 claims description 12
- 230000000712 assembly Effects 0.000 claims description 11
- 238000000429 assembly Methods 0.000 claims description 11
- 238000011010 flushing procedure Methods 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 9
- 125000006850 spacer group Chemical group 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 6
- 210000004907 gland Anatomy 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 15
- 238000013461 design Methods 0.000 abstract description 8
- 239000000725 suspension Substances 0.000 abstract description 7
- 230000018044 dehydration Effects 0.000 abstract description 4
- 238000006297 dehydration reaction Methods 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 102
- 239000012065 filter cake Substances 0.000 description 17
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 239000002245 particle Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 235000019580 granularity Nutrition 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B11/00—Feeding, charging, or discharging bowls
- B04B11/02—Continuous feeding or discharging; Control arrangements therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B11/00—Feeding, charging, or discharging bowls
- B04B11/08—Skimmers or scrapers for discharging ; Regulating thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B15/00—Other accessories for centrifuges
- B04B15/06—Other accessories for centrifuges for cleaning bowls, filters, sieves, inserts, or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B7/00—Elements of centrifuges
- B04B7/08—Rotary bowls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B7/00—Elements of centrifuges
- B04B7/08—Rotary bowls
- B04B7/12—Inserts, e.g. armouring plates
- B04B7/16—Sieves or filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B9/00—Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
- B04B9/02—Electric motor drives
Landscapes
- Centrifugal Separators (AREA)
Abstract
The invention discloses a pusher centrifuge, which comprises a machine base, a driving device, a composite oil cylinder assembly, a shaft and bearing assembly, a rotary drum assembly and a housing assembly, wherein the composite oil cylinder assembly is arranged on the machine base; the drum assembly comprises a water retaining ring and a third-stage drum, a second-stage drum is arranged in the inner periphery of the third-stage drum, a first-stage drum is arranged in the inner periphery of the second-stage drum, a material pushing disc is arranged in the inner periphery of the first-stage drum, a material distribution opening is formed in the circumference of the side end of the material pushing disc, a centrifugal distributor is arranged on the circumference of the side end of the material distribution opening, a centrifugal net surface pressing ring is arranged at one end of the centrifugal distributor, and a feeding pipe is inserted into the centrifugal net surface pressing ring; the first-stage rotary drum is provided with a first-stage screen, the second-stage rotary drum is provided with a second-stage screen, and the third-stage rotary drum is provided with a third-stage screen; the material pushing disc, the first-stage rotary drum and the second-stage rotary drum are respectively provided with a first-stage material pushing sheet, a second-stage material pushing sheet and a third-stage material pushing sheet. The invention provides a pusher centrifuge which is convenient to use and maintain, has a good material dehydration effect due to the unique design of a rotary drum device, can be suitable for low-concentration suspension, and has a long service life.
Description
Technical Field
The invention relates to a centrifuge, in particular to a pusher centrifuge.
Background
The centrifuge is made ofCentrifugal force，Separation ofLiquid andSolid bodyGranules orLiquid, method for producing the same and use thereofAndLiquid, method for producing the same and use thereofThe components of the mixture of (1). The centrifugal machine is mainly used forSuspension liquidThe solid particles in (A) are separated from the liquid, or two kinds of the solid particles in the emulsion are separated from the liquidDensity ofSeparating different and immiscible liquids (e.g. separating cream from milk); it can also be used to remove liquids from wet solids, such as by spin drying clothes in a washing machine; the special overspeed tubular separator can also separate gas mixtures with different densities; some settling centrifuges can also grade solid particles according to density or granularity by utilizing the characteristic that solid particles with different densities or granularities have different settling speeds in liquid.
Pusher centrifuges are continuously operated filter centrifuges. Under the condition of high-speed operation, the slurry is continuously fed into the feeding pipe and flows onto the filter screen of the rotary drum along the inner wall of the feeding hopper. The filtrate passes through the filter screen and is continuously discharged through the filtrate outlet, and filter residue accumulated on the inner surface of the filter screen is pushed out along the inner wall surface of the rotary drum by the reciprocating piston pusher.
The material of the pusher centrifuge in the prior art has a narrow application range, and when the material process is changed or the feeding concentration is too low, the pusher centrifuge cannot be used for separation; most of the existing rotary drum devices of the pusher centrifuge are simple in structure, the material dewatering effect is poor, and the requirements of customers cannot be met; therefore, it is urgently needed to develop a pusher centrifuge to solve the above problems.
Disclosure of Invention
The invention aims to solve the problems, and provides a pushing type centrifuge which is ingenious in design, convenient to use and maintain, good in material dehydration effect due to the unique design of a rotary drum device, suitable for low-concentration suspension liquid and long in service life.
In order to realize the purpose, the invention adopts the technical scheme that: the device comprises a base, wherein a driving device is arranged on the base and is connected with a first group of shafts and bearing assemblies through a composite oil cylinder assembly or a transmission device, one end of each of the first group of shafts and the bearing assemblies is movably provided with a rotary drum assembly, and the periphery of the rotary drum assembly is provided with a housing assembly; the drum assembly comprises a water retaining ring connected with the first group of shafts and the bearing assembly, the water retaining ring is movably arranged on a third-stage drum, a second-stage drum is movably arranged in the inner periphery of the third-stage drum, a first-stage drum is movably arranged in the inner periphery of the second-stage drum, a material pushing disc is movably arranged in the inner periphery of the first-stage drum, a material distribution port is movably arranged on the circumference of the side end of the material pushing disc, a centrifugal distributor is arranged on the circumference of the side end of the material distribution port, the centrifugal distributor is of a conical structure, a centrifugal surface net is arranged on the inner side of the centrifugal distributor, a centrifugal net surface pressing ring is arranged at one end of the centrifugal distributor, and a material inlet pipe is inserted into the; the first-stage rotary drum is provided with a first-stage screen, the part of the inner wall of the second-stage rotary drum, which extends out of the first-stage rotary drum, is provided with a second-stage screen, and the part of the inner wall of the third-stage rotary drum, which extends out of the second-stage rotary drum, is provided with a third-stage screen; the material pushing disc, the first-stage rotary drum and the second-stage rotary drum are respectively provided with a first-stage material pushing sheet, a second-stage material pushing sheet and a third-stage material pushing sheet.
Furthermore, the third-stage rotary drum is in a straight cylinder shape, a rotary drum pressing ring is movably arranged at the side end of the third-stage rotary drum, a water retaining ring is arranged between the third-stage rotary drum and the rotary drum pressing ring, and a scraper is movably arranged at the side end of the rotary drum pressing ring.
Furthermore, the end of the third-stage rotary drum close to the feeding pipe is inclined, and a third-stage rotary drum pressing ring is movably arranged at the side end of the third-stage rotary drum.
Further, the driving device is set to be hydraulically driven, and the hydraulically driven device comprises a motor, a coupler, an oil pump, a hydraulic valve and a pipeline connecting assembly.
Further, the driving device is set as a mechanical drive, the mechanical drive comprises a motor reducer assembly, a transmission device and a second group of shaft and bearing assembly, the motor reducer assembly, the transmission device and the second group of shaft and bearing assembly are arranged on the base, and the second group of shaft and bearing assembly is a mechanical shaft and bearing assembly.
Further, a cavity is arranged in the pressure oil cylinder, a pushing shaft is arranged in the cavity, and a pushing piston is arranged on the pushing shaft and is in an H shape; a reversing sleeve is arranged in the pushing piston, the pushing piston divides the cavity into a left pressure oil cavity and a right pressure oil cavity, a front piston disc and a rear piston disc are respectively arranged at two ends of the pushing piston, a second guide plunger and a first guide plunger are respectively arranged on the front piston disc and the rear piston disc, and a guide rod is arranged at one end of the second guide plunger and one end of the first guide plunger; one end of the pressure oil cylinder is provided with a pressure oil cylinder cover, the side end of the rear piston disc is provided with a hydraulic nut, and the hydraulic nut is arranged on the material pushing shaft; an oil inlet and outlet framework is arranged at the side end of the pressure oil cylinder cover; a pressure medium conveyor is arranged on the outer circumference of the oil inlet and outlet framework; the pressure medium conveyor is provided with a joint and an oil return connecting pipe; the oil return connecting pipe is communicated with the oil return pipe through an oil return plastic pipe.
Furthermore, a front framework oil seal seat, a front medium conveyor seat, a rear medium conveyor seat and a front medium conveyor seat are sequentially arranged on the outer circumference of the oil inlet and outlet framework, and a pressure medium conveyor is arranged in the joint of the front medium conveyor seat and the rear medium conveyor seat with the oil inlet and outlet framework; the pressure medium conveyor is provided with a plurality of pressure medium conveyors; a front spacer bush is arranged at the joint of the oil inlet and outlet framework and the front framework oil seal seat; the joints of the oil inlet and outlet framework and the front medium conveyor base and the rear medium conveyor base are respectively provided with a first bearing and a second bearing; the side end of the pressure medium conveyor is provided with a medium conveyor gland.
Furthermore, the hydraulic nut comprises a nut body, a piston is arranged on the nut body, and a semicircular gasket is arranged between the nut body and the piston; the nut main body is internally provided with a threaded hole and a through hole flow passage.
furthermore, the first group of shafts and the bearing assembly comprise hollow shafts, the hollow shafts are respectively provided with a material pushing shaft through a front material pushing guide sleeve and a rear material pushing guide sleeve, the material pushing shafts are respectively provided with bearing seats through a front bearing and a rear bearing, and the bearing seats are provided with oil return pipes and oil return pipe joints; a front spacing sleeve, a front labyrinth ring, a rear spacing sleeve and a rear labyrinth ring are respectively arranged on two sides of the front bearing and the rear bearing, and a sealing ring is arranged at the side end of the front labyrinth ring; the middle part and the tail part of the hollow shaft are respectively provided with a throttling oil plug and an oil plug.
Further, the housing component comprises a shell, a material collecting groove is arranged in the shell, a front cover plate is arranged on one side of the shell, and a door is arranged on the front cover plate; a feed pipe, a material collecting groove flushing pipe, a screen inner washing pipe and a screen flushing pipe are respectively inserted in the front cover plate; the upper end of the shell is provided with a drum outer washing pipe; the other side of the shell is provided with a rear shell plate, and a rear shell plate flushing pipe is arranged on the rear shell plate through an elbow; the lower end of the casing is respectively provided with a liquid outlet and a discharge hole.
The invention has the beneficial effects that: the invention provides a pusher centrifuge, which is ingenious in design, convenient to use and maintain and long in service life, and the unique design of a rotary drum device is that firstly a filter cake is formed on a centrifugal distributor, and then the filter cake is filtered and dewatered in a primary stage by a primary filter screen, a secondary filter screen and a tertiary filter screen respectively, so that the material dewatering effect is good, and the pusher centrifuge can be suitable for low-concentration suspension liquid.
1. The centrifugal distributor is in a conical structure, a filter cake formed by a solid phase on a centrifugal net surface can be very thin, and the centrifugal distributor cannot block materials; the low-concentration suspension liquid can have thickening effect, and an effective filter cake can be formed in the next procedure.
2. One end of the third-stage rotary drum is cylindrical, the end close to the feeding pipe is designed to be inclined, the diameter of the third-stage rotary drum is larger and larger, the rotating speed is constant, the separation factor is larger and larger due to the structural design, and the dewatering effect is better; the filter cake becomes thinner and thinner at the position with larger and larger diameter, water is easier to permeate, the dehydration effect is better, and the follow-up cost is reduced for enterprises.
3. The washing pipe in the screen is washed by adding washing liquid while pushing material, so that the washing effect is good, the efficiency is high, and the subsequent cost is reduced for enterprises.
4. The screen mesh washing pipe disclosed by the invention can be used for comprehensively washing all screen meshes after stopping the machine, and has the advantages of good washing effect and high efficiency.
5. When the driving device is driven by hydraulic pressure, the driving device is composed of a motor, a coupler, an oil pump and a pipeline connecting assembly, oil in the oil pump enters the composite oil cylinder assembly, a channel of the reversing sleeve and the pushing piston is switched in the composite oil cylinder assembly, then the piston assembly is pushed to one end, so that the pushing shaft is driven to push in a reciprocating manner, the piston is automatically reversed by reciprocating, the pushing shaft is driven to push in a left-right pulse manner, and the driving device has the advantages of simple structure, ingenious design, convenience in use and maintenance, strong reliability, easiness in processing and long service life.
7. According to the invention, the piston is locked on the material pushing shaft through the hydraulic nut, after the material pushing shaft is locked, oil is driven into the material pushing shaft through the threaded hole and the through hole flow channel until the gap between the nut body and the piston is just the thickness of the semicircular gasket, so that the material pushing shaft cannot rebound, the locking effect is good, and the looseness is prevented.
8. When the driving device is driven mechanically, the driving device is realized by driving a speed reducer by a motor and then driving a crank rocker assembly, wherein the speed reducer is general mechanical equipment, and is convenient to purchase and maintain; the crank and rocker assembly mainly comprises a left eccentric wheel, a right eccentric wheel and a shifting fork, the speed reducer drives the left eccentric wheel and the right eccentric wheel to rotate at a constant speed, namely the crank rotates at a constant speed, the left eccentric wheel and the right eccentric wheel rotate to drive the shifting fork to reciprocate, namely the rocker reciprocates, and the crank and rocker assembly is simple in structure, simpler in structure and lower in manufacturing and maintenance cost; a guide key is arranged between the material pushing shaft and the hollow shaft, and when the material pushing bearing assembly drives the material pushing shaft to reciprocate, the guide key can enable the material pushing shaft to slide in the hollow shaft according to the path of the guide key, so that the material pushing shaft can be positioned and guided in the main shaft.
Drawings
Fig. 1 is a front view (hydraulically driven) of the present invention.
FIG. 2 is a schematic diagram of a drum assembly in accordance with the present invention (the third screen is cylindrical).
FIG. 3 is a schematic view of a drum assembly in the structure of the present invention (one end of the third stage screen is cylindrical and the other end is conical).
FIG. 4 is a schematic view of the construction of the shaft and bearing assembly of the present invention.
Fig. 5 is a schematic structural diagram of a compound oil cylinder assembly in the structure of the invention.
Fig. 6 is a schematic structural view of the hydraulic nut in fig. 5.
Fig. 7 is an elevation view of a shroud assembly in the configuration of the present invention.
Fig. 8 is a side view of a shroud assembly in the construction of the present invention.
Fig. 9 is a front view (mechanical drive) of the structure of the present invention.
Fig. 10 is a top view of the drive device of the present invention in mechanical actuation.
The text labels in the figures are represented as: 1. a machine base; 2. a drum assembly; 3. a first set of shaft and bearing assemblies; 4. a compound cylinder assembly; 5. hydraulic driving; 6. a housing assembly; 2-1, a water retaining ring; 2-2, a third-stage rotary drum; 2-3, sealing a pressing ring by a push rod; 2-4, a second-stage rotary drum; 2-5, a first-stage rotary drum; 2-6, a first-level material pushing sheet; 2-7, pushing a material tray; 2-8, a cloth opening; 2-9, a centrifugal distributing device; 2-10, a first-stage screen mesh; 2-11, a secondary material pushing sheet; 2-12, centrifuging the flour net; 2-13, a second-stage screen; 2-14, three-stage material pushing sheets; 2-15, a third-stage screen mesh; 2-16, a water retaining ring; 2-17, a scraper; 2-18, drum pressing ring; 2-19, centrifugal net surface pressing ring; 2-20 feed pipes; 2-21, three-stage drum pressing ring; 3-1, a rear spacer sleeve; 3-2, a rear labyrinth ring; 3-3, a material pushing shaft; 3-4, a hollow shaft; 3-5, bearing seats; 3-6, a rear bearing; 3-7, a front spacer sleeve; 3-8, a front labyrinth ring; 3-9, sealing rings; 3-10, a throttling oil plug; 3-11, a front bearing; 3-12, oil plug; 3-13, an oil return pipe joint; 3-14, a second oil return pipe; 3-15, a rear material pushing guide sleeve; 3-16, a front pushing guide sleeve; 4-1, a medium conveyor gland; 4-2, a rear medium conveyor seat; 4-3, a front medium conveyor seat; 4-4, a front framework oil seal seat; 4-5, a rear piston disc; 4-6, a second guide plunger; 4-7, pushing piston; 4-8, reversing sleeve; 4-9, a front piston disc; 4-10, a second bearing; 4-11, a pressure oil cylinder; 4-12, a guide rod; 4-13, a pressure medium conveyor; 4-14, a first guide plunger; 4-15, pressure cylinder cover; 4-16, an oil return plastic pipe; 4-17, a first oil return pipe; 4-18 parts of front spacer sleeve; 4-19, oil inlet and outlet frame; 4-20, an oil return connecting pipe; 4-21, a joint; 4-22, hydraulic nut; 4-23, a first bearing; 4-24, right pressure oil chamber; 4-25, channel I; 4-26 parts of an oil inlet channel II; 4-27, a pressure oil chamber; 4-28, channel II; 4-29, channel iii; 4-30, a left pressure oil chamber; 4-31, channel IV; 4-32, bolts; 4-33, oil inlet cavity; 4-34, channel V; 4-36, oil return hole; 4-37, a liquid-saving oil hole; 4-38 parts of an oil inlet channel I; 4-22-01, nut body; 4-22-02 parts of semicircular gasket; 4-22-03, piston; 4-22-04, threaded hole; 4-22-05, a through hole runner; 5-1, a motor; 5-2, a coupler; 6-1, bending; 6-2, a rear shell plate flushing pipe; 6-3, a rear shell plate; 6-4, a collecting groove flushing pipe; 6-5, washing pipes in the screen; 6-6, a shell; 6-7, a screen mesh washing pipe; 6-8, a material collecting groove; 6-9 parts of a feeding pipe; 6-10 parts of a front cover plate; 6-11, door; 6-12, washing a pipe outside the rotary drum; 6-13 parts of a discharge hole; 6-14 parts of liquid discharge port; 7. a motor reducer assembly; 8. a transmission device; 100. a drive device; 200. a second set of shafts and bearing assemblies.
Detailed Description
The following detailed description of the present invention is given for the purpose of better understanding technical solutions of the present invention by those skilled in the art, and the present description is only exemplary and explanatory and should not be construed as limiting the scope of the present invention in any way.
As shown in fig. 1 to 8, the specific structure of the present invention is: the device comprises a machine base 1, wherein a driving device 100 is arranged on the machine base 1, the driving device 100 is connected with a first group of shafts and bearing assemblies 3 through a composite oil cylinder assembly 4 or a transmission device 8, one end of each first group of shafts and bearing assemblies 3 is movably provided with a rotary drum assembly 2, and the periphery of each rotary drum assembly 2 is provided with a housing assembly 6; the drum component 2 comprises a water retaining ring 2-1 connected with a first group of shafts and a bearing component 3, the water retaining ring 2-1 is movably arranged on a third-stage drum 2-2, a second-stage drum 2-4 is movably arranged in the inner periphery of the third-stage drum 2-2 through a push rod sealing pressing ring 2-3, a first-stage drum 2-5 is movably arranged in the inner periphery of the second-stage drum 2-4, a material pushing disc 2-7 is movably arranged in the inner periphery of the first-stage drum 2-5, a material distributing hole 2-8 is movably arranged on the circumference of the side end of the material pushing disc 2-7, a centrifugal material distributor 2-9 is arranged on the circumference of the side end of the material distributing hole 2-8, the centrifugal material distributor 2-9 is in a conical structure, a centrifugal surface net 2-12 is arranged on the inner side of the centrifugal material distributor 2-9, a centrifugal surface pressing ring 2-19 is arranged at one end of, the feeding pipe 6-9 is inserted into the centrifugal net surface pressing ring 2-19; the first-stage rotary drum 2-5 is provided with a first-stage screen 2-10, the part of the inner wall of the second-stage rotary drum 2-4, which is longer than the first-stage rotary drum 2-5, is provided with a second-stage screen 2-13, and the part of the inner wall of the third-stage rotary drum 2-2, which is longer than the second-stage rotary drum 2-4, is provided with a third-stage screen 2-15; the material pushing disc 2-7, the first-stage rotary drum 2-5 and the second-stage rotary drum 2-4 are respectively provided with a first-stage material pushing sheet 2-6, a second-stage material pushing sheet 2-11 and a third-stage material pushing sheet 2-14.
Further, the third-stage rotary drum 2-2 is cylindrical, a rotary drum pressing ring 2-18 is movably arranged at the side end of the third-stage rotary drum 2-2, a water retaining ring 2-16 is arranged between the third-stage rotary drum 2-2 and the rotary drum pressing ring 2-18, and a scraper 2-17 is movably arranged at the side end of the rotary drum pressing ring 2-18. The scraper 2-17 scrapes off the filter cake on the material collecting groove 6-8 and discharges the filter cake out of the machine from the tangential discharge hole 6-13.
Furthermore, one end of the third-stage rotary drum 2-2 is cylindrical, the other end of the third-stage rotary drum is conical and is close to the feeding pipe 6-9, and a third-stage rotary drum pressing ring 2-21 is movably arranged at the side end of the third-stage rotary drum 2-2. When the end of the third-stage rotary drum 2-2 close to the feeding pipe 6-9 is conical, the third-stage rotary drum pressing ring 2-21 is not provided with a scraper, the housing component 6 is not provided with a material collecting groove 6-8, and a filter cake is pushed out of the rotary drum in the material pushing process, is extruded to the shell and finally naturally falls off. The diameter of the third-stage rotary drum 2-2 is larger and larger, the rotating speed is constant, the separation factor is larger and larger due to the structural design, and the dewatering effect is better; the filter cake becomes thinner and thinner at the position with larger and larger diameter, water is easier to permeate, the dehydration effect is better, and the follow-up cost is reduced for enterprises.
Further, the driving device 100 is set to be a hydraulic drive 5, and the hydraulic drive 5 comprises a motor 5-1, a coupler 5-2, an oil pump, a hydraulic valve and a pipeline connecting assembly.
Further, the drive device 100 is configured as a mechanical drive comprising a motor reducer assembly 7, a transmission 8 and a second shaft and bearing assembly 200 arranged on the housing 1, the second shaft and bearing assembly 200 being a mechanical shaft and bearing assembly. The working principle and the process of the motor speed reducer component 7, the transmission device 8, the mechanical shaft and the bearing component are disclosed in patent number 201821159789.5, the name is a material pushing driving device of a mechanical material pushing centrifuge, application date 2018.07.20 and publication date 2019.03.15, the reciprocating motion of the material pushing driving device of the mechanical material pushing centrifuge is realized by driving a speed reducer to drive a crank and rocker component by a motor, the crank and rocker component mainly comprises a left eccentric wheel, a right eccentric wheel and a shifting fork, the speed reducer drives the left eccentric wheel and the right eccentric wheel to rotate at a constant speed, namely, the speed reducer is equivalent to the constant speed rotation of a crank, and the left eccentric wheel and the right eccentric wheel rotate to drive the shifting fork to reciprocate, namely, the shifting; a guide key is arranged between the material pushing shaft and the hollow shaft, and when the material pushing bearing assembly drives the material pushing shaft to reciprocate, the guide key can enable the material pushing shaft to slide in the hollow shaft according to the path of the guide key, so that the material pushing shaft can be positioned and guided in the main shaft.
Further, a cavity is arranged in the pressure oil cylinder 4-11, a pushing shaft 3-3 is arranged in the cavity, a pushing piston 4-7 is arranged on the pushing shaft 3-3, and the pushing piston 4-7 is in an H shape; a reversing sleeve 4-8 is arranged in the pushing piston 4-7, the pushing piston 4-7 divides the cavity into a left pressure oil cavity 4-30 and a right pressure oil cavity 4-24, two ends of the pushing piston 4-7 are respectively provided with a front piston disc 4-9 and a rear piston disc 4-5, the front piston disc 4-9 and the rear piston disc 4-5 are respectively provided with a second guide plunger 4-6 and a first guide plunger 4-14, and one end of the second guide plunger 4-6 and one end of the first guide plunger 4-14 are provided with a guide rod 4-12; one end of the pressure oil cylinder 4-11 is provided with a pressure oil cylinder cover 4-15, the side end of the rear piston disc 4-5 is provided with a hydraulic nut 4-22, and the hydraulic nut 4-22 is arranged on the material pushing shaft 3-3; the side end of the pressure oil cylinder cover 4-15 is provided with an oil inlet and outlet framework 4-19; the outer circumference of the oil inlet and outlet frame 4-19 is provided with a pressure medium conveyor 4-13; the pressure medium conveyor 4-13 is provided with a joint 4-21 and an oil return connecting pipe 4-20; the oil return connecting pipe 4-20 is communicated with the first oil return pipe 4-17 through an oil return plastic pipe 4-16.
Furthermore, a front framework oil seal seat 4-4, a front medium conveyer seat 4-3, a rear medium conveyer seat 4-2 and a front medium conveyer seat 4-3 are sequentially arranged on the outer circumference of the oil inlet and outlet framework 4-19, and a pressure medium conveyer 4-13 is arranged in the joint of the front medium conveyer seat 4-3 and the rear medium conveyer seat 4-2 and the oil inlet and outlet framework 4-19; 2 pressure medium conveyors 4-13 are arranged; a front spacer bush 4-18 is arranged at the joint of the oil inlet and outlet framework 4-19 and the front framework oil seal seat 4-4; the joints of the oil inlet and outlet framework 4-19 and the front medium conveyer seat 4-3 and the rear medium conveyer seat 4-2 are respectively provided with a first bearing 4-23 and a second bearing 4-10; the side end of the pressure medium conveyor 4-13 is provided with a medium conveyor gland 4-1. .
Further, the hydraulic nut 4-22 comprises a nut main body 4-22-01, a piston 4-22-03 is arranged on the nut main body 4-22-01, and a semicircular gasket 4-22-02 is arranged between the nut main body 4-22-01 and the piston 4-22-03; a threaded hole 4-22-04 and a through hole flow passage 4-22-05 are arranged in the nut main body 4-22-01. Firstly, a material pushing piston 4-7 is locked on a material pushing shaft 3-3 through a hydraulic nut 4-22, after the material pushing piston is locked, oil is driven into a nut main body 4-22-01 through a threaded hole 4-22-04 and a through hole flow passage 4-22-05 until the gap between the nut main body 4-22-01 and the piston 4-22-03 is just the thickness of a semicircular gasket 4-22-02, so that rebound cannot occur, the locking effect is good, and looseness is prevented.
Further, the first group of shafts and the bearing assembly 3 comprise hollow shafts 3-4, the hollow shafts 3-4 are respectively provided with pushing shafts 3-3 through front pushing guide sleeves 3-16 and rear pushing guide sleeves 3-15, the pushing shafts 3-3 are respectively provided with bearing seats 3-5 through front bearings 3-11 and rear bearings 3-6, and the bearing seats 3-5 are provided with oil return pipes 3-14 and oil return pipe joints 3-13; the two sides of the front bearing 3-11 and the rear bearing 3-6 are respectively provided with a front spacer 3-7, a front labyrinth ring 3-8, a rear spacer 3-1 and a rear labyrinth ring 3-2, and the side end of the front labyrinth ring 3-8 is provided with a sealing ring 3-9; the middle part and the tail part of the hollow shaft 3-4 are respectively provided with a throttling oil plug 3-10 and an oil plug 3-12.
Further, the housing component 6 comprises a machine shell 6-6, a material collecting groove 6-8 is arranged in the machine shell 6-6, a front cover plate 6-10 is arranged on one side of the machine shell 6-6, and a door 6-11 is arranged on the front cover plate 6-10; a feed pipe 6-9, a material collecting groove flushing pipe 6-4, a screen inner washing pipe 6-5 and a screen flushing pipe 6-7 are respectively inserted in the front cover plate 6-10; the upper end of the machine shell 6-6 is provided with a drum outer washing pipe 6-12; the other side of the machine shell 6-6 is provided with a rear shell plate 6-3, and the rear shell plate 6-3 is provided with a rear shell plate flushing pipe 6-2 through an elbow 6-1; the lower end of the machine shell 6-6 is respectively provided with a liquid outlet 6-14 and a discharge port 6-13. 3 washing pipes 6-5 in the screen are arranged, and the washing pipes 6-5 in the screen are washed by adding washing liquid while pushing materials, so that the washing effect is good, the efficiency is high, and the subsequent cost of an enterprise is reduced. The screen mesh washing pipes 6-7 are used for comprehensively washing all screen meshes after shutdown, and have good washing effect and high efficiency.
The working principle of the machine is as follows: after the rotary drum component 2 is started to rotate at full speed, suspension liquid is added into a centrifugal distributor 2-9 arranged on a material pushing plate 2-7 through a feeding pipe 6-9, most of liquid is thrown out of the rotary drum through gaps of a centrifugal surface net 2-12 and wall holes of the centrifugal distributor 2-9 under the action of centrifugal force, solid phase forms a filter cake on the centrifugal distributor 2-9, when a first-stage rotary drum 2-5 returns, the filter cake is relatively moved forward for a certain distance along the axial direction of the rotary drum, and when the first-stage rotary drum 2-5 progresses, the surface of an empty screen is continuously filled with the suspension liquid to form a new filter cake. The filter cake formed by the continuous reciprocating motion of the material pushing disc 2-7 is continuously pushed forward along the axial direction of the rotary drum to the second-stage rotary drum 2-4 and is further dried. The filter cake is separated from the second-stage rotary drum 2-4 and enters the third-stage rotary drum 2-2, the filter cake is loosened on the third-stage screen 2-15 and redistributed and continuously pushed out, finally the filter cake is pushed out of the rotary drum and enters a material collecting groove, and the filter cake is discharged out of the machine from a tangential discharge port 6-13 through a scraper 2-17 arranged on the third-stage rotary drum 2-2. The filtrate and the washing liquid are discharged through the liquid outlet 6-14. When the driving device is a hydraulic driving device 5, the rotation of the rotary drum component 2 is driven by the driving device 5, the reciprocating motion of the first-stage rotary drum 2-5 is realized by the driving device 5 through the compound oil cylinder component 4, the driving device 5 is composed of a motor 5-1, a coupler 5-2, an oil pump and a pipeline connecting component, oil in the oil pump is divided into two groups through a distribution valve and an oil pipe, hydraulic oil provided by a hydraulic system is injected into 2 pressure medium conveyors 4-13 through 2 connectors 4-21, the pressure medium conveyors 4-13 enable the hydraulic oil to enter 2 channels I4-25, and then enter the pressure oil cavities 4-27 through oil inlet channels II 4-26, so that the pressure oil cavities 4-27 are continuously filled with high-pressure oil. At the moment, the first guide plunger 4-14 enables the pressure oil chamber 4-27 to be communicated with the oil inlet chamber 4-33 of the reversing sleeve 4-8, and the second guide plunger 4-6 enables the oil return chamber of the reversing sleeve 4-8 to be communicated with the oil return hole 4-36 of the material pushing shaft 3-3 through the channel V4-34, so that the reversing sleeve 4-8 moves rightwards. Because the reversing sleeve 4-8 moves rightwards, the pressure oil in the pressure oil chamber 4-27 is communicated with the cavity of the left pressure oil chamber 4-30 of the pushing piston 4-7 through the liquid saving oil hole 4-37 and the oil inlet channel I4-38 of the pushing piston 4-7, because the rear piston disc 4-5, the pushing piston 4-7 and the front piston disc 4-9 are connected into a piston assembly through the bolts 4-32 at the 2 positions, and the piston assembly is connected on the pushing shaft 3-3 through the hydraulic nuts 4-22, after the pressure oil is injected into the left pressure oil chamber 4-30 of the rear piston disc 4-5, the pushing piston 4-7 and the front piston disc 4-9 move rightwards together with the hydraulic nuts 4-22 and the pushing shaft 3-3, and the pressure oil in the right pressure oil chamber 4-24 of the piston returns to the oil return hole 4-36 of the material pushing shaft 3-3 through the channel II 4-28, the channel III 4-29 and the channel IV 4-31, at this time, the process that the piston assembly drives the material pushing shaft 3-3 to push leftwards is completed, when the piston assembly pushes the rightmost end to enable the end face of the front piston disc 4-9 to touch the end face of the pressure oil cylinder 4-11, the first guide plunger 4-14 and the second guide plunger 4-6 switch the oil feeding direction and the oil returning direction of the reversing sleeve 4-8, so that the left oil feeding direction and the right oil returning direction of the piston assembly are all switched, the piston assembly moves leftwards, and the material pushing shaft 3-3 is driven to move leftwards together. The piston assembly is automatically reversed by reciprocating in the way, and the material pushing shaft is driven to push 3-3 pulses.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present invention, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.
Claims (10)
1. A pusher centrifuge comprises a base (1), and is characterized in that a driving device (100) is arranged on the base (1), the driving device (100) is connected with a first group of shafts and bearing assemblies (3) through a composite oil cylinder assembly (4) or a transmission device (8), one end of each first group of shafts and bearing assemblies (3) is movably provided with a rotary drum assembly (2), and the periphery of each rotary drum assembly (2) is provided with a housing assembly (6); the drum component (2) comprises a water retaining ring (2-1) connected with a first group of shafts and a bearing component (3), the water retaining ring (2-1) is movably arranged on a third-stage drum (2-2), a second-stage drum (2-4) is movably arranged in the inner periphery of the third-stage drum (2-2), a first-stage drum (2-5) is movably arranged in the inner periphery of the second-stage drum (2-4), a material pushing disc (2-7) is movably arranged in the inner periphery of the first-stage drum (2-5), a material distribution port (2-8) is movably arranged on the circumference of the side end of the material pushing disc (2-7), a centrifugal material distributor (2-9) is arranged on the circumference of the side end of the material distribution port (2-8), the centrifugal material distributor (2-9) is of a conical structure, a centrifugal surface net (2-12) is arranged on the inner side of the centrifugal material distributor (2-9), one end of the centrifugal distributing device (2-9) is provided with a centrifugal net surface pressing ring (2-19), and the feeding pipe (6-9) is inserted into the centrifugal net surface pressing ring (2-19); a first-stage screen (2-10) is arranged on the first-stage rotary drum (2-5), a second-stage screen (2-13) is arranged on the part of the inner wall of the second-stage rotary drum (2-4) which extends out of the first-stage rotary drum (2-5), and a third-stage screen (2-15) is arranged on the part of the inner wall of the third-stage rotary drum (2-2) which extends out of the second-stage rotary drum (2-4); the material pushing disc (2-7), the first-stage rotary drum (2-5) and the second-stage rotary drum (2-4) are respectively provided with a first-stage material pushing sheet (2-6), a second-stage material pushing sheet (2-11) and a third-stage material pushing sheet (2-14).
2. The pusher centrifuge as defined in claim 1, wherein the third stage drum (2-2) is in a shape of a straight cylinder, a drum pressing ring (2-18) is movably disposed at the side end of the third stage drum (2-2), a water retaining ring (2-16) is disposed between the third stage drum (2-2) and the drum pressing ring (2-18), and a scraper (2-17) is movably disposed at the side end of the drum pressing ring (2-18).
3. The pusher centrifuge as defined in claim 1, wherein the end of the third drum (2-2) close to the inlet pipe (6-9) is conical, and the side end of the third drum (2-2) is movably provided with a third drum pressing ring (2-21).
4. A pusher centrifuge according to claim 1, characterised in that the drive (100) is arranged as a hydraulic drive (5), the hydraulic drive (5) comprising a motor (5-1), a coupling (5-2), an oil pump, a hydraulic valve and a conduit connection assembly.
5. A pusher centrifuge according to claim 1, c h a r a c t e r i z e d in that the drive means (100) is arranged as a mechanical drive comprising a motor reducer assembly (7), a transmission (8) and a second set of shaft and bearing assemblies (200) arranged on the frame (1), the second set of shaft and bearing assemblies (200) being mechanical shaft and bearing assemblies.
6. The pusher centrifuge as defined in claim 1, wherein the pressure cylinder (4-11), the pressure cylinder (4-11) is provided with a cavity, the cavity is provided with a pusher shaft (3-3), the pusher shaft (3-3) is provided with a pusher piston (4-7), and the pusher piston (4-7) is in an H shape; a reversing sleeve (4-8) is arranged in the pushing piston (4-7), the pushing piston (4-7) divides the cavity into a left pressure oil cavity (4-30) and a right pressure oil cavity (4-24), two ends of the pushing piston (4-7) are respectively provided with a front piston disc (4-9) and a rear piston disc (4-5), the front piston disc (4-9) and the rear piston disc (4-5) are respectively provided with a second guide plunger (4-6) and a first guide plunger (4-14), and one ends of the second guide plunger (4-6) and the first guide plunger (4-14) are provided with a guide rod (4-12); one end of the pressure oil cylinder (4-11) is provided with a pressure oil cylinder cover (4-15), the side end of the rear piston disc (4-5) is provided with a hydraulic nut (4-22), and the hydraulic nut (4-22) is arranged on the material pushing shaft (3-3); the side ends of the pressure oil cylinder covers (4-15) are provided with oil inlet and outlet frameworks (4-19); the outer circumference of the oil inlet and outlet frame (4-19) is provided with a pressure medium conveyor (4-13); the pressure medium conveyor (4-13) is provided with a joint (4-21) and an oil return connecting pipe (4-20); the oil return connecting pipe (4-20) is communicated with the first oil return pipe (4-17) through an oil return plastic pipe (4-16).
7. The pusher centrifuge as claimed in claim 6, wherein the outer circumference of the oil inlet and outlet frame (4-19) is sequentially provided with a front frame oil seal seat (4-4), a front medium conveyer seat (4-3), a rear medium conveyer seat (4-2) and a front medium conveyer seat (4-3), and a pressure medium conveyer (4-13) is arranged in the joint of the front medium conveyer seat (4-3) and the rear medium conveyer seat (4-2) with the oil inlet and outlet frame (4-19); 2 pressure medium conveyors (4-13) are arranged; a front spacer bush (4-18) is arranged at the joint of the oil inlet and outlet framework (4-19) and the front framework oil seal seat (4-4); a first bearing (4-23) and a second bearing (4-10) are respectively arranged at the connection part of the oil inlet and outlet framework (4-19) and the front medium conveyer base (4-3) and the rear medium conveyer base (4-2); a medium conveyor gland (4-1) is arranged at the side end of the pressure medium conveyor (4-13).
8. The pusher centrifuge as defined in claim 6, wherein the hydraulic nut (4-22) comprises a nut body (4-22-01), a piston (4-22-03) is arranged on the nut body (4-22-01), and a semicircular gasket (4-22-02) is arranged between the nut body (4-22-01) and the piston (4-22-03); the nut main body (4-22-01) is internally provided with a threaded hole (4-22-04) and a through hole flow passage (4-22-05).
9. The pusher centrifuge of claim 1, wherein the first set of shaft and bearing assembly (3) comprises a hollow shaft (3-4), the hollow shaft (3-4) is provided with a pusher shaft (3-3) through a front pusher guide sleeve (3-16) and a rear pusher guide sleeve (3-15), respectively, the pusher shaft (3-3) is provided with a bearing seat (3-5) through a front bearing (3-11) and a rear bearing (3-6), respectively, the bearing seat (3-5) is provided with a second oil return pipe (3-14) and an oil return pipe joint (3-13); a front spacing sleeve (3-7), a front labyrinth ring (3-8), a rear spacing sleeve (3-1) and a rear labyrinth ring (3-2) are respectively arranged on two sides of the front bearing (3-11) and the rear bearing (3-6), and a sealing ring (3-9) is arranged at the side end of the front labyrinth ring (3-8); the middle part and the tail part of the hollow shaft (3-4) are respectively provided with a throttling oil plug (3-10) and an oil plug (3-12).
10. The pusher centrifuge as defined in claim 1, wherein the housing assembly (6) comprises a housing (6-6), a material collecting groove (6-8) is provided in the housing (6-6), a front cover plate (6-10) is provided at one side of the housing (6-6), and a door (6-11) is provided on the front cover plate (6-10); a feed pipe (6-9), a collecting groove flushing pipe (6-4), a screen mesh inner washing pipe (6-5) and a screen mesh flushing pipe (6-7) are respectively inserted in the front cover plate (6-10); the upper end of the machine shell (6-6) is provided with a drum outer washing pipe (6-12); the other side of the casing (6-6) is provided with a rear casing plate (6-3), and the rear casing plate (6-3) is provided with a rear casing plate flushing pipe (6-2) through an elbow (6-1); the lower end of the casing (6-6) is respectively provided with a liquid outlet (6-14) and a discharge port (6-13).
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|---|---|---|---|
| CN201910887633.1A CN110548605A (en) | 2019-09-19 | 2019-09-19 | Pushing type centrifugal machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910887633.1A CN110548605A (en) | 2019-09-19 | 2019-09-19 | Pushing type centrifugal machine |
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| CN110548605A true CN110548605A (en) | 2019-12-10 |
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| CN201910887633.1A Pending CN110548605A (en) | 2019-09-19 | 2019-09-19 | Pushing type centrifugal machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114887782A (en) * | 2022-04-15 | 2022-08-12 | 湘潭通用离心机有限公司 | Two-stage piston pusher centrifuge |
| CN117884268A (en) * | 2024-03-18 | 2024-04-16 | 南京新筛分科技实业有限公司 | Large-scale tertiary material centrifuge that pushes away of heavy alkali filtration usefulness |
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| CN117884268B (en) * | 2024-03-18 | 2024-05-28 | 南京新筛分科技实业有限公司 | Large-scale tertiary material centrifuge that pushes away of heavy alkali filtration usefulness |
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