CN111729762A

CN111729762A - Multi-cone sedimentation filter centrifuge

Info

Publication number: CN111729762A
Application number: CN202010581019.5A
Authority: CN
Inventors: 颜国良; 王深波; 王细枧; 聂颖
Original assignee: Xiangtan Huibo Centrifuge Co ltd
Current assignee: Xiangtan Huibo Centrifuge Co ltd
Priority date: 2020-06-23
Filing date: 2020-06-23
Publication date: 2020-10-02

Abstract

The invention discloses a multi-cone sedimentation filter centrifuge, which comprises a machine base part and a rotary drum part, wherein the tail end of a bearing chamber part is movably connected with the rotary drum part; an organic shell part is arranged outside the rotary drum part; the drum part comprises a rear drum which comprises a sedimentation drum section and a filtering straight drum section; a front rotary drum is movably arranged at the side end of the filtering straight rotary drum section, the front rotary drum is set as a filtering cone rotary drum, and a column section screen and a cone section screen are respectively arranged on the filtering straight rotary drum section and the front rotary drum; a spiral conveyor is arranged in the rear rotary drum, and the middle part of the spiral conveyor is movably connected with the tail end of the pushing shaft; the spiral conveyor is provided with a plurality of material distribution holes. The invention provides a multi-cone sedimentation and filtration centrifuge which adopts a combined structure of a sedimentation rotary drum section, a filtration straight rotary drum section and a filtration cone rotary drum section, wherein the sedimentation rotary drum section is a non-porous rotary drum for sedimentation separation, and a clear liquid phase can be obtained.

Description

Multi-cone sedimentation filter centrifuge

Technical Field

The invention belongs to the field of centrifuge application, and particularly relates to a multi-cone sedimentation filtration 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 the emulsion are separated from the liquid, or two liquids which have different densities and are not mutually soluble in the emulsion are separated (for example, cream is separated from milk), and the emulsion can also be used for discharging the liquid in the wet solid, for example, clothes are dried by a washing machine; the characteristic that solid particles with different densities or particle sizes have different settling speeds in liquid is utilized, and some settling centrifuges can also grade the solid particles according to the densities or particle sizes; the action principle of the centrifugal separator includes centrifugal filtration and centrifugal sedimentation. Centrifugal filtration is to make the suspension generate centrifugal pressure under the centrifugal field to act on the filter medium, so that the liquid passes through the filter medium to become filtrate, and solid particles are trapped on the surface of the filter medium, thereby realizing liquid-solid separation; centrifugal sedimentation is the principle that components with different densities of suspension (or emulsion) are quickly settled and layered in a centrifugal force field to realize liquid-solid (or liquid-liquid) separation.

The existing spiral sedimentation centrifuge can be suitable for separating suspension with very low solid content, the separated liquid phase is very clear, but the water content of the separated solid phase is higher, and generally the water content is more than 30%; the existing spiral filtering type centrifuge can be suitable for separating suspension liquid with the solid content of 10% -30%, the water content of the separated solid phase is low, and the solid content of the separated liquid phase is high. For the application occasions with the solid content of below 30 percent and the requirements of very clear liquid phase and very low solid-phase water content after separation, two centrifuges are needed to be configured for carrying out two separation processes, namely, a spiral sedimentation centrifuge is adopted for primary centrifugation, and a spiral filtration centrifuge or other filtration centrifuges are adopted for secondary centrifugation. The investment cost is high, and the equipment maintenance workload is large, so improvement is needed.

Disclosure of Invention

The invention aims to solve the problems, and provides a multi-cone sedimentation filtration centrifuge which adopts a combined structure of a sedimentation rotary drum section, a filtration straight rotary drum section and a filtration cone rotary drum section, wherein the sedimentation rotary drum section is a non-porous rotary drum for sedimentation separation, so that a clear liquid phase can be obtained.

In order to realize the purpose, the invention adopts the technical scheme that: the differential mechanism comprises a machine seat part, wherein a differential mechanism part is arranged on the machine seat part, the differential mechanism part is connected with a rotary drum part through a bearing chamber part, and the tail end of the bearing chamber part is movably connected with the rotary drum part; an organic shell part is arranged outside the rotary drum part; the drum part comprises a rear drum which comprises a sedimentation drum section and a filtering straight drum section; a front rotary drum is movably arranged at the side end of the filtering straight rotary drum section, the front rotary drum is arranged as a filtering cone rotary drum section, and a column section screen and a cone section screen are respectively arranged on the filtering straight rotary drum section and the front rotary drum; a spiral conveyor is arranged in the rear rotary drum, and the middle part of the spiral conveyor is movably connected with the tail end of the pushing shaft; a plurality of material distribution holes are formed in the screw conveyor, and material blocking rings are arranged inside the screw conveyor and at the side ends of the material distribution holes; the side end of the front rotary drum is provided with a scraper and a water retaining ring.

Furthermore, the machine shell part comprises a rear machine shell and a front machine shell, a machine shell water retaining ring is arranged in the front machine shell, a water collecting ring and a baffle are sequentially arranged at the side end of the machine shell water retaining ring, and a door cover is arranged at the side end of the front machine shell; a sedimentation mother liquor cavity, a filtration mother liquor cavity and a solid cavity are formed in the rear shell and the front shell; the shell part is internally provided with a feeding pipe which sequentially penetrates through the door cover, the baffle plate, the water collecting ring, the front shell and the rear shell.

Furthermore, a washing pipe is arranged in the machine shell part and sequentially penetrates through the door cover, the baffle plate, the water collecting ring and the front machine shell; the flushing pipe is arranged at the side end of the door cover through the water washing pipe seat.

Further, a protective cover is arranged on the outer side of the differential mechanism part.

Further, a lining is arranged between the machine shell water retaining ring and the baffle.

Furthermore, the middle part of the screw conveyor is movably connected with the material pushing shaft through a sealing cover and a sealing bolt.

Further, the differential mechanism part comprises a differential mechanism, a torque protection wheel is arranged at one side end of the differential mechanism, and the other side end of the differential mechanism is movably connected with the bearing chamber part.

Further, the frame part includes the frame, is provided with the motor on the frame, and the output of motor passes through the belt pulley to be connected with the belt, and the lower extreme of frame is provided with rubber shear type bumper shock absorber through bolt assembly.

The invention has the beneficial effects that:

1. the drum part of the invention adopts a combined structure of a sedimentation drum section, a filtration straight drum section and a filtration cone drum section, the sedimentation drum section is a non-porous drum, and sedimentation separation is carried out to obtain a clear liquid phase. And pushing the solid phase with higher water content after the sedimentation separation to a filtering straight rotary drum section by a screw conveyor for further filtering separation, and pushing the solid phase after the further separation of the filtering straight rotary drum section to a filtering cone rotary drum section by the screw conveyor for centrifugal separation. The filter cake pushed from the filtering straight rotary drum section is redistributed on the rotary drum, the solid phase is completely loosened, the diameter of the front rotary drum is gradually increased due to the adoption of the conical structure of the filtering conical rotary drum section, the centrifugal force obtained by the filter cake in the rotary drum is also gradually increased, the filtering area in the annular section of the filter cake is increased due to the increase of the diameter of the front rotary drum, the filter cake is gradually thinned on the conical front rotary drum, and based on the influence of the factors, the solid phase object with very low water content can be obtained

2. The shell part in the invention is a two-section shell, three collecting cavities, namely a sedimentation mother liquor cavity, a filtration mother liquor cavity and a solid cavity, are used for respectively collecting sedimentation mother liquor, filtration mother liquor and solids; and subside the mother liquor chamber, filter the mother liquor chamber, the lower extreme in the three chamber in solid chamber is provided with 2 leakage fluid dram and 1 row cinder notch respectively, because the filter segment rotary drum adopts the screen cloth as filter media, so in filter segment rotary drum separation process, the solid of less granule can pass filter media and enter into and filter the mother liquor chamber in the filter cake, because subside the mother liquor chamber and separate completely with filtering the mother liquor chamber, so contain less granule filter the mother liquor and can separate the collection completely with the settlement mother liquor of clarifying completely, thereby further improvement separation purity.

3. The tail end of the bearing chamber part of the machine is movably connected with the rotary drum part, and the structure adopts a cantilever type structure without a basic installation form. The cantilever type structure is beneficial to arranging a sight hole or a door cover device and observing the separation condition of the centrifuge; after the door cover or the machine shell is disassembled, the quick-wear parts of the centrifuge can be replaced and maintained. The original sedimentation filtration type centrifuge adopts a bearing support structure at two ends, the bearing supports at two ends are needed when the centrifuge changes a wearing part, then the whole revolving body is completely lifted out, the end cover at the slag discharge end is disassembled, and the screen mesh is changed, so that the maintenance labor intensity is high, the time is long, and the requirement on the skill of maintenance personnel is high.

Drawings

Fig. 1 is a front view of the structure of the present invention.

Fig. 2 is a front view of a partial structure of the casing of the present invention.

Fig. 3 is a front view showing a partial structure of a housing according to the present invention.

FIG. 4 is a front view of a drum in the present invention in partial configuration.

FIG. 5 is a front view of a differential portion of the present invention.

Fig. 6 is a diagram of the working principle of the present invention (the differential rotation speed of the drum and the screw conveyor can be adjusted greatly by changing different pulley diameters).

FIG. 7 is a diagram illustrating the operation of the present invention (the difference between the rotating speed of the drum and the screw conveyor is fixed and not adjustable).

The text labels in the figures are represented as: 1. a base portion; 2. a bearing chamber portion; 3. a drum section; 4. a housing portion; 5. a protective cover; 6. a differential portion; 101. a machine base; 102. a belt pulley; 103. a belt; 104. a motor; 105. a bolt assembly; 106. rubber shear dampers; 301. a rear drum; 302. a screw conveyor; 303. a sealing cover; 304. a seal bolt; 305. a material blocking ring; 306. a column section screen; 307. a front drum; 308. a conical section screen; 309. a scraper; 310. a water retaining ring; 311. a material pushing shaft; 312. a material distribution hole; 30101. settling and drum section rotating; 30102. filtering the straight rotary drum section; 401. a rear housing; 402. a front housing; 403. a water retaining ring of the machine shell; 404. a water collecting ring; 405. a baffle plate; 406. a door cover; 407. a feed pipe; 408. washing the tube seat with water; 409. a flush tube; 410. a bushing; 411. a solid chamber; 412. a mother liquor filtering cavity; 413. a sedimentation mother liquor chamber; 601. a differential mechanism; 602. the torque protection wheel.

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 7, the specific structure of the present invention is: the differential mechanism comprises a machine base part 1, wherein a differential mechanism part 6 is arranged on the machine base part 1, the differential mechanism part 6 is connected with a rotary drum part 3 through a bearing chamber part 2, and the tail end of the bearing chamber part 2 is movably connected with the rotary drum part 3; the outer side of the rotary drum part 3 is provided with a shell part 4; the drum portion 3 comprises a rear drum 301, the rear drum 301 comprising a settling drum section 30101 and a filtering straight drum section 30102; the side end of the filtering straight rotary drum section 30102 is movably provided with a front rotary drum 307, the front rotary drum 307 is set as a filtering cone rotary drum section, and the filtering straight rotary drum section 30102 and the front rotary drum 307 are respectively provided with a column section screen 306 and a cone section screen 308; a screw conveyor 302 is arranged in the rear rotary drum 301, and the middle part of the screw conveyor 302 is movably connected with the tail end of the material pushing shaft 311; a plurality of material distribution holes 312 are formed in the screw conveyor 302, and a material stop ring 305 is arranged inside the screw conveyor 302 and at the side end of each material distribution hole 312; the side end of the front drum 307 is provided with a scraper 309 and a water retaining ring 310. The filtering straight rotary drum section 30102 is connected with the front rotary drum 307 through a bolt; the scraper 309 is connected with the water retaining ring 310 through a bolt, and the scraper 309 is connected with the front rotary drum 307 through a bolt; the material stop ring 305 is connected with the screw conveyor 302 through bolts

As shown in fig. 2, the casing part 4 includes a rear casing 401 and a front casing 402, a casing water retaining ring 403 is disposed in the front casing 402, a water collecting ring 404 and a baffle 405 are sequentially disposed at a side end of the casing water retaining ring 403, and a door 406 is disposed at a side end of the front casing 402; a sedimentation mother liquor chamber 413, a filtration mother liquor chamber 412 and a solids chamber 411 are formed in the rear shell 401 and the front shell 402; a feed pipe 407 is arranged in the machine shell part 4, and the feed pipe 407 passes through the door cover 406, the baffle 405, the water collecting ring 404, the front machine shell 402 and the rear machine shell 401 in sequence. A flushing pipe 409 is arranged in the machine shell part 4, and the flushing pipe 409 sequentially penetrates through the door cover 406, the baffle 405, the water collecting ring 404 and the front machine shell 402; a wash pipe 409 is provided at a side end of the door cover 406 through a wash pipe holder 408.

As shown in fig. 5, a protective cover 5 is provided on the outer side of the differential portion 6.

As shown in FIG. 2, a bushing 410 is disposed between the casing water retaining ring 403 and the baffle 405.

As shown in fig. 4, the middle part of the screw conveyor 302 is movably connected with the material pushing shaft 311 through a sealing cover 303 and a sealing bolt 304.

As shown in fig. 5, the differential portion 6 includes a differential 601, a torque protection wheel 602 is disposed at a side end of the differential 601, and the other side end of the differential 601 is movably connected to the bearing chamber portion 2.

As shown in fig. 2, the housing part 1 includes a housing 101, a motor 104 is disposed on the housing 101, an output end of the motor 104 is connected to a belt 103 through a pulley 102, and a rubber shear damper 106 is disposed at a lower end of the housing 101 through a bolt assembly 105.

During specific use, suspension enters the material distribution cavity in the screw conveyor 302 through the feeding pipe 407 and is uniformly distributed in the sedimentation rotary drum section 30101 after being accelerated, under the action of centrifugal force, heavier solid-phase particles in the suspension are quickly settled on the wall of the sedimentation rotary drum section 30101 to form annular sediment, lighter liquid phase forms an annular liquid layer on the annular sediment, and the suspension is continuously added through the feeding pipe 407, so that the lighter liquid phase is discharged from an overflow port at the bottom of the rotary drum. Because the spiral conveyor 302 and the rear rotary drum 301 have different rotating speeds, the sediments are conveyed to the filtering straight rotary drum section 30102 by the spiral conveyor 302 for further dehydration, then are pushed to the filtering cone rotary drum section for drying, finally are discharged from the filtering cone rotary drum section, are collected by the material collecting groove and are discharged out of the machine, and a flushing pipe 409 is arranged in the machine shell part 4, so that when materials need to be washed, filter cakes can be flushed at the filtering straight rotary drum section 30102. The liquid phase discharged from the settling rotary drum section 30101 and the filtering rotary drum section 30102 is collected by the machine shell and discharged out of the machine. The differential portion 6 is connected to the drum portion 3 through a hollow main shaft of the bearing chamber portion 2, and is driven to rotate by a motor, and an output shaft of the differential portion 6 is connected to the screw conveyor 302 through a spline shaft. The machine shell part 4 is of a two-section structure, the machine shell part 4 comprises a rear machine shell 401 and a front machine shell 402, a machine shell water retaining ring 403 is arranged in the front machine shell 402, a water collecting ring 404 and a baffle 405 are sequentially arranged at the side end of the machine shell water retaining ring 403, and a door cover 406 is arranged at the side end of the front machine shell 402; a sedimentation mother liquor cavity 413, a filtration mother liquor cavity 412 and a solid cavity 411 are formed in the rear shell 401 and the front shell 402, two liquid discharge ports are designed in the sedimentation mother liquor cavity 413 and the filtration mother liquor cavity 412 and are respectively a sedimentation mother liquor discharge port and a filtration mother liquor discharge port, and a slag discharge port is further designed in the solid cavity 411.

As shown in fig. 6-7, the other end of the hollow shaft of the bearing chamber portion 2 is connected to the differential 601 through a connecting disc, the motor drives the connecting disc to drive the drum portion 3 to rotate at a high speed through a belt to generate centrifugal force, and the connecting disc drives the differential 601 to rotate at a high speed. The other end of the spiral shaft of the bearing chamber part 2 is connected with an output shaft of the differential 601, an input shaft of the differential 601 is rigidly fixed to enable the input rotating speed to be zero, and the differential rotating speed of the rotary drum part 3 and the screw conveyor 302 is obtained through a two-stage planetary gear speed changing device of the differential 601, so that the purpose that solid-liquid separation is carried out and solid substances are discharged by the screw conveyor is achieved.

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

1. A multi-cone sedimentation filter centrifuge is characterized by comprising a base part (1) and is characterized in that a differential mechanism part (6) is arranged on the base part (1), the differential mechanism part (6) is connected with a rotary drum part (3) through a bearing chamber part (2), and the tail end of the bearing chamber part (2) is movably connected with the rotary drum part (3); an organic shell part (4) is arranged on the outer side of the rotary drum part (3); the drum part (3) comprises a rear drum (301), and the rear drum (301) comprises a settling drum section (30101) and a filtering straight drum section (30102); a front rotary drum (307) is movably arranged at the side end of the filtering straight rotary drum section (30102), the front rotary drum (307) is set as a filtering conical rotary drum section, and a column section screen (306) and a conical section screen (308) are respectively arranged on the filtering straight rotary drum section (30102) and the front rotary drum (307); a screw conveyor (302) is arranged in the rear rotary drum (301), and the middle part of the screw conveyor (302) is movably connected with the tail end of the pushing shaft (311); a plurality of material distribution holes (312) are formed in the screw conveyor (302), and material blocking rings (305) are arranged inside the screw conveyor (302) and at the side ends of the material distribution holes (312); the side end of the front rotary drum (307) is provided with a scraper (309) and a water retaining ring (310).

2. The multi-cone sedimentation filter centrifuge of claim 1, wherein the casing part (4) comprises a rear casing (401) and a front casing (402), a casing water retaining ring (403) is arranged in the front casing (402), a water collecting ring (404) and a baffle (405) are sequentially arranged at the side end of the casing water retaining ring (403), and a door cover (406) is arranged at the side end of the front casing (402); a sedimentation mother liquor cavity (413), a filtration mother liquor cavity (412) and a solid cavity (411) are formed in the rear shell (401) and the front shell (402); a feeding pipe (407) is arranged in the machine shell part (4), and the feeding pipe (407) sequentially penetrates through the door cover (406), the baffle plate (405), the water collecting ring (404), the front machine shell (402) and the rear machine shell (401).

3. The multi-cone decanting centrifuge of claim 1, wherein the housing portion (4) has a wash pipe (409) disposed therein, the wash pipe (409) passing through the door (406), the baffle (405), the water collection ring (404), and the front housing (402) in that order; the flushing pipe (409) is arranged at the side end of the door cover (406) through a washing pipe seat (408).

4. A multi-cone decanting centrifuge as claimed in claim 1, wherein the differential part (6) is provided on its outside with a protective cover (5).

5. A multi-cone decanting centrifuge as claimed in claim 1, wherein a bushing (410) is provided between the housing water baffle ring (403) and the baffle (405).

6. The multi-cone decanting centrifuge as claimed in claim 2, wherein the central region of the auger (302) is movably connected to the impeller shaft (311) by means of a sealing cap (303) and a sealing bolt (304).

7. A multi-cone sedimentation filter centrifuge according to claim 1, wherein the differential portion (6) comprises a differential (601), a torque protection wheel (602) is arranged at one lateral end of the differential (601), and the other lateral end of the differential (601) is movably connected to the bearing chamber portion (2).

8. A multi-cone decanting centrifuge as claimed in claim 1, wherein the housing part (1) comprises a housing (101), a motor (104) is provided on the housing (101), the output of the motor (104) is connected to a belt (103) via a pulley (102), and the lower end of the housing (101) is provided with a rubber shear damper (106) via a bolt assembly (105).