CN117654785A

CN117654785A - Centrifugal filter

Info

Publication number: CN117654785A
Application number: CN202410147639.6A
Authority: CN
Inventors: 周建; 胡德兵
Original assignee: Guangdong Quang Intelligent Technology Co ltd
Current assignee: Guangdong Quang Intelligent Technology Co ltd
Priority date: 2024-02-02
Filing date: 2024-02-02
Publication date: 2024-03-08
Anticipated expiration: 2044-02-02
Also published as: CN117654785B

Abstract

The invention belongs to the technical field of centrifugal filtration, and particularly relates to a centrifugal filter, which comprises: an inner filter cartridge, an outer filter cartridge, and a drive assembly; the drive assembly includes: the lower side of the inner filter cylinder is connected with a connecting disc in an inverted T shape, and the lower end of the connecting disc is connected with the large gear ring; the lower side of the outer filter cylinder is connected with a small tooth ring surrounding the upper end of the connecting disc; the motor is installed on the shock-absorbing base, a pinion and a large gear are connected to an output shaft of the motor, the diameter of the pinion is smaller than that of the large gear ring, and the pinion and the large gear are meshed with the large gear ring and the small gear ring respectively. The rotation direction of the outer filter cylinder is the same as that of the inner filter cylinder, so that the influence on the quality of separation and filtration caused by abrupt change of the flow direction is avoided; and the rotation speed of the outer filter cylinder is higher than that of the inner filter cylinder, so that the operation of separating and filtering the solid-phase particles with smaller outer ring and light outer ring is more efficiently performed.

Description

Centrifugal filter

Technical Field

The invention belongs to the technical field of centrifugal filtration, and particularly relates to a centrifugal filter.

Background

The centrifugal filter separates liquid phase and solid phase particles in the slurry through centrifugal force generated by rotation of the rotary drum, the solid phase particles are trapped on the inner wall of the rotary drum, and the liquid phase is discharged from the device through the rotary drum. In order to continuously and deeply filter the slurry, the overall separation efficiency and purity are improved, and the slurry can be separated and filtered in a multistage filtering mode.

Centrifugal filters employing multi-stage filtration in the prior art are generally carried out by inner and outer drums sleeved together or by drums stacked one above the other, but the mode is long in screening and large in space occupation rate. For example, patent publication No. CN216571910U, publication No. 2022.05.24 discloses a double-filterable sewage treatment apparatus that performs centrifugal filtration through inner and outer filter cartridges, and has the following drawbacks as in most of the prior art:

1. the rotation speed of the outer filter cylinder is smaller than that of the inner filter cylinder, and in general, the particles of the outer ring are smaller and lighter, and a filter cylinder with larger pore diameter and a higher rotation speed are needed for separation and filtration, so that the centrifugal filter cannot well separate and filter the outer ring under the condition;

2. in order to realize the same power and differential transmission, the steering direction of the outer filter cylinder is opposite to that of the inner filter cylinder, the flow direction of slurry is suddenly changed when the slurry enters the next stage of filtration, the flow direction and the pressure distribution are affected, the filtration quality is reduced, and the slurry can be damaged due to unbalanced pressure.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, and provides a centrifugal filter which realizes the same steering and differential transmission under the action of the same power source and better separates and filters slurry of an outer ring.

In order to solve the technical problems, the invention provides a centrifugal filter, which comprises: the device comprises a damping base, a processing frame body, a supporting frame, an inner filter cylinder, an outer filter cylinder and a driving assembly, wherein the upper side of the damping base is provided with the processing frame body; a drainage connecting pipe is arranged at the right part of the shock absorption base, and a circle of drainage hose is communicated between the lower part of the treatment frame body and the drainage connecting pipe; the damping base is provided with a driving component for driving the inner filter cylinder and the outer filter cylinder to rotate; the drive assembly includes: the lower side of the inner filter cylinder is connected with a connecting disc which is in an inverted T shape, and the lower end of the connecting disc is connected with the large gear ring; the lower side of the outer filter cylinder is connected with a small toothed ring surrounding the upper end of the connecting disc, and the diameter of the small toothed ring is smaller than that of the large toothed ring; the motor for power output is arranged on the damping base, a pinion and a large gear are connected to an output shaft of the motor, the diameter of the pinion is smaller than that of the large gear ring, and the pinion and the large gear are meshed with the large gear ring and the small gear ring respectively.

Preferably, the method further comprises: the upper part of the treatment frame body is penetrated with a suction pipe extending to the inner bottom of the inverted cone barrel; the inverted cone-shaped cylinder is fixedly connected with a spiral scraping ring in a connecting mode through a connecting rod, and the edge of the outer ring of the spiral scraping ring is contacted with the inner wall of the inner filter cylinder so as to be suitable for scraping off the trapped solid-phase particles; the spiral direction of the spiral scraping ring from bottom to top is the same as the rotation direction of the inner filter cylinder during separation and filtration, the angle between the cross section of the spiral scraping ring and the inner filter cylinder is an acute angle, and the upper end of the spiral scraping ring is positioned at a feed opening on the inverted cone cylinder; the inlet pipe runs through the back taper section of thick bamboo.

Preferably, the method further comprises: and the material blocking part is used for further blocking solid-phase particles scraped by the spiral scraping ring.

Preferably, the method further comprises: the electromagnetic valve is obliquely arranged at the lower part of the inverted cone cylinder so that solid phase particles can be gathered, and the electromagnetic valve is arranged at the position of the inverted cone cylinder which is obliquely arranged below the inverted cone cylinder; the suction pipe is close to the inclined lower position of the inverted cone type cylinder, so that the suction pipe is convenient for sucking materials.

Preferably, the method further comprises: the lower side of the back taper cylinder is provided with a slurry diffusion cylinder with a cone shape, the lower end of the feed pipe extends into the slurry diffusion cylinder, and the lower part of the slurry diffusion cylinder is provided with a plurality of discharge ports for discharging slurry in different positions in the inner filter cylinder in a diffusion manner, so that the separation and filtration effect can be improved during initial blanking.

Preferably, the method further comprises: the slurry diffusion cylinder is rotationally arranged at the lower side of the inverted cone cylinder, the slurry diffusion cylinder is connected with the position of the inverted cone cylinder in a rotating way through a bearing seat, the lower side of the slurry diffusion cylinder and the inner bottom side of the inner filter cylinder are both connected with the shaft rods, and the two shaft rods are in transmission connection through the shaft coupler.

Preferably, the slurry diffusion cylinder is obliquely arranged, the coupler is a universal coupler, and the inner filter cylinder and the slurry diffusion cylinder are driven through the universal coupler.

Preferably, the method further comprises: the device comprises a cleaning frame, a spiral feeding shaft, a spur gear, a straight toothed ring, a material guiding pipe and a communicating pipe, wherein two cleaning frames which are in contact fit with the inner wall of an outer filter cylinder are connected to a supporting frame, a feed inlet is formed in the cleaning frame, the feed inlet faces the rotating direction of the outer filter cylinder during separation and filtration, and one side, close to the outer filter cylinder, of the cleaning frame is of an open design; a spiral feeding shaft is rotationally arranged in the cleaning frame, and the upper end of the spiral feeding shaft is connected with a spur gear; the upper side of the outer filter cylinder is connected with a straight tooth ring meshed with the straight tooth wheel, teeth of the straight tooth ring are positioned on the inner side of the straight tooth ring, the upper ends of the two cleaning frames are all communicated with a material guiding pipe, the material guiding pipe penetrates through the upper part of the processing frame body, and a communicating pipe used for externally connecting the pump body is communicated between the upper ends of the two material guiding pipes.

Preferably, the method further comprises: the width of one side of the cleaning frame, which is provided with the feed inlet, is smaller than that of one side of the cleaning frame, which is far away from the feed inlet, and one side of the cleaning frame, which is provided with the feed inlet, is connected with a shoveling plate, and the shoveling plate is matched with the inner wall of the outer filter cylinder in a contact manner so as to be suitable for shoveling the trapped solid-phase particles onto the spiral feeding shaft.

Preferably, the method further comprises: the filter plate is arranged at one side of the cleaning frame opposite to the feed inlet, and is used for allowing liquid phase in slurry to permeate through the filter plate.

On the basis of overcoming the defects of the prior art, the invention has the following beneficial effects:

1. the rotation direction of the outer filter cylinder is the same as that of the inner filter cylinder, so that the influence on the quality of separation and filtration caused by abrupt change of the flow direction is avoided; and the rotation speed of the outer filter cylinder is higher than that of the inner filter cylinder, so that the operation of separating and filtering the solid-phase particles with smaller outer ring and light outer ring is more efficiently performed.

2. The same-direction differential transmission is directly realized through the gears, so that belt transmission in the prior art is omitted, and additional influences caused by various factors such as deformation, temperature, abrasion and the like are avoided.

3. The spiral scraping ring and the spiral feeding shaft can be used for cleaning solid-phase particles trapped by the inner wall of the inner filter cylinder and the inner wall of the outer filter cylinder respectively, so that continuity of slurry separation and filtration is improved, frequent disassembly and assembly are not needed for cleaning, and liquid phase can be prevented from being cleaned along with the solid-phase particles.

4. The inner filter cylinder and the slurry diffusion cylinder synchronously rotate through the same power source, so that operations of slurry discharging, separating and filtering are synchronized, an additional power source is omitted, and the synchronism is high.

Drawings

Fig. 1 is a schematic view of the assembly of the present invention.

Fig. 2 is a schematic view of the upper side of the processing frame of the present invention, cut away.

FIG. 3 is a schematic illustration of the inner and outer filter cartridges of the present invention, wherein the inner and outer filter cartridges are in full section.

FIG. 4 is an exploded view of the components of the present invention, including the connection disc, large ring gear, and small ring gear.

Fig. 5 is a schematic view of an inverted cone, spiral scraper ring and slurry diffusion cartridge of the present invention.

Fig. 6 is a schematic cross-sectional view of the inner cartridge, spiral scraper ring and stopper of the present invention, wherein the spiral scraper ring and stopper are shown only in part.

Fig. 7 is a schematic view of an outer cartridge and cleaning frame of the present invention.

Fig. 8 is a schematic view of a spur gear and spur gear ring of the present invention.

Fig. 9 is a schematic view of a screw feed shaft and spur gear of the present invention.

FIG. 10 is a schematic view of a cleaning frame, filter plate and blade of the present invention, wherein the cleaning frame is shown in full section.

The marks in the drawings provided by the invention are as follows: 1-vibration damping base, 01-drainage connecting pipe, 2-treatment frame body, 02-supporting frame, 3-inner filter cylinder, 4-outer filter cylinder, 50-connecting disc, 5-large toothed ring, 6-small toothed ring, 7-motor, 8-small gear, 9-large gear, 10-inverted cone cylinder, 100-feeding opening, 11-spiral scraping ring, 110-blocking part, 12-suction pipe, 13-electromagnetic valve, 14-feeding pipe, 15-slurry diffusion cylinder, 16-shaft rod, 17-coupling, 18-cleaning frame, 180-feeding opening, 181-filter plate, 182-shovel plate, 19-spiral feeding shaft, 20-straight gear, 21-straight toothed ring, 22-feeding pipe, 23-communicating pipe and R-acute angle.

Detailed Description

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it should be understood that the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not form a conflict with each other.

Example 1: a centrifugal filter, as shown in fig. 1-4, comprising: the device comprises a shock absorption base 1, a treatment frame body 2, a supporting frame 02, an inner filter cylinder 3, an outer filter cylinder 4 and a driving component, wherein the upper side of the shock absorption base 1 is provided with the treatment frame body 2, the supporting frame 02 is fixedly connected with the inner side of the upper part of the treatment frame body 2, the inner filter cylinder 3 and the outer filter cylinder 4 surrounding the inner filter cylinder 3 are rotatably arranged on the supporting frame 02, a feed pipe 14 extending towards the inner filter cylinder 3 penetrates through the upper part of the treatment frame, the aperture of the inner filter cylinder 3 is larger than that of the outer filter cylinder 4, slurry to be treated is poured into the inner filter cylinder 3 through the feed pipe 14, liquid phase and part of smaller solid phase particles in the slurry are separated into the outer filter cylinder 4 when the inner filter cylinder 3 rotates, and the liquid phase in the slurry is separated into the treatment frame body 2 when the outer filter cylinder 4 rotates; a drainage connecting pipe 01 is arranged at the right part of the shock absorption base 1, a circle of drainage hose is communicated between the lower part of the treatment frame body 2 and the drainage connecting pipe 01, and liquid phase in the treatment frame body 2 flows into the drainage connecting pipe 01 from the drainage hose to be discharged; the damping base 1 is provided with a driving component for driving the inner filter cylinder 3 and the outer filter cylinder 4 to rotate; the drive assembly includes: the lower side of the inner filter cylinder 3 is connected with a connecting disc 50 which is in an inverted T shape, and the lower end of the connecting disc 50 is connected with the large toothed ring 5; the lower side of the outer filter cylinder 4 is connected with a small toothed ring 6 surrounding the upper end of the connecting disc 50, and the diameter of the small toothed ring 6 is smaller than that of the large toothed ring 5; the motor 7 for power output is arranged on the damping base 1, a pinion 8 and a large gear 9 are connected to an output shaft of the motor 7, the diameter of the pinion 8 is smaller than that of the large gear ring 5, and the pinion 8 and the large gear 9 are meshed with the large gear ring 5 and the small gear ring 6 respectively.

When the control motor 7 drives the pinion 8 and the large gear 9 to rotate, the pinion 8 drives the inner filter cylinder 3 to rotate through the meshing with the large gear ring 5, and the large gear 9 drives the outer filter cylinder 4 to rotate through the meshing with the small gear ring 6, so that the inner filter cylinder 3 and the outer filter cylinder 4 are driven to rotate in the same direction through the same power source, the quality of separation and filtration is prevented from being influenced by abrupt change of flow direction, the same flow direction and adaptive pressure distribution of slurry in different filter cylinders are ensured, the rotating speed of the outer filter cylinder 4 is higher than that of the inner filter cylinder 3, and the separation and filtration operation of small and light solid particles on the outer ring is further performed more efficiently.

In addition, the meshing of the pinion 8 with the large toothed ring 5 also enables a power-saving transmission, so as to guarantee an initial separation and filtration treatment of a large quantity of slurry when the slurry enters the inner filter cartridge 3.

Example 2: on the basis of embodiment 1, as shown in fig. 5, further includes: the upper part of the treatment frame body 2 is penetrated with a suction pipe 12 extending to the inner bottom of the inverted cone barrel 10; the inverted cone cylinder 10 is fixedly connected with a spiral scraping ring 11 in a connecting rod connection mode, and the outer ring edge of the spiral scraping ring 11 is contacted with the inner wall of the inner filter cylinder 3 so as to be suitable for scraping off the trapped solid-phase particles; the spiral direction of the spiral scraping ring 11 from bottom to top is the same as the rotation direction of the inner filter cylinder 3 during separation and filtration, the angle between the cross section of the spiral scraping ring 11 and the inner filter cylinder 3 is an acute angle R, and the upper end of the spiral scraping ring 11 is positioned at the feeding opening 100 on the inverted cone cylinder 10; the feed pipe 14 penetrates through the inverted cone 10; under the general condition, as the solid-phase particles can be trapped on the surface of the filter cylinder after filtration and separation, the existing filter usually adopts a disassembly or inclined plane diversion mode to remove the solid-phase particles, wherein the disassembly is more complicated, the continuity of centrifugal filtration work is influenced, and partial water is easy to climb out along the inclined plane during diversion; when the filter works, the inner filter cylinder 3 rotates to drive the trapped solid phase particles to rotate, the spiral scraping ring 11 scrapes the solid phase particles, and the spiral scraping ring 11 moves upwards along the spiral scraping ring 11 under the action of centrifugal force because the spiral scraping ring 11 rotates in the same direction as the inner filter cylinder 3 in the separation and filtration process, an acute angle R gap between the spiral scraping ring 11 and the inner filter cylinder 3 can keep a certain space for the solid phase particles, finally the solid phase particles can fall into the inverted cone cylinder 10 through the feeding opening 100 to be collected, and in the process of unloading the trapped solid phase particles, the liquid phase can be continuously centrifugally filtered to penetrate the inner filter cylinder 3, so that the liquid phase and the solid phase particles are prevented from being removed together, and the solid phase particles in the inverted cone cylinder 10 can be sucked out through the suction pipe 12 externally connected with a suction pump; in addition, the spiral scraping ring 11 scrapes off the solid phase particles, so that the phenomenon of blockage can be avoided, the liquid phase and smaller solid phase particles can smoothly penetrate through the inner filter cylinder 3, and the separation and filtration effects are ensured.

As shown in fig. 6, further includes: the blocking part 110 is formed by upwards protruding the edge of the inner ring of the spiral scraping ring 11, and the blocking part 110 is parallel to the inner wall of the inner filter cylinder 3, and the blocking part 110 is used for further blocking solid phase particles scraped by the spiral scraping ring 11.

As shown in fig. 5, further includes: a solenoid valve 13 which is provided obliquely at the lower part of the inverted cone 10 so that solid particles can be collected, the solenoid valve 13 being installed at a position of the inverted cone 10 obliquely downward, the solenoid valve 13 being controlled so that the solid particles collected in the inverted cone 10 can be discharged back into the inner filter cartridge 3 again, thereby performing a secondary treatment; the suction pipe 12 is close to the inclined lower position of the inverted cone 10, so that the material can be sucked conveniently.

As shown in fig. 5, further includes: the lower side of the reverse cone-shaped cylinder 10 is provided with a slurry diffusion cylinder 15 with a cone shape, the lower end of the feed pipe 14 extends into the slurry diffusion cylinder 15, slurry is added into the slurry diffusion cylinder 15 through the feed pipe 14, the lower part of the slurry diffusion cylinder 15 is provided with a plurality of discharge ports for discharging the slurry in a diffusion manner to different positions in the inner filter cylinder 3, and therefore the separation and filtration effects can be improved during initial blanking.

As shown in fig. 5, further includes: the shaft rods 16 and the couplings 17 are arranged on the lower side of the back taper cylinder 10 in a rotating mode, the positions, connected with the back taper cylinder 10 in a rotating mode, of the slurry diffusion cylinder 15 are connected through the bearing seats, the lower side of the slurry diffusion cylinder 15 and the inner bottom side of the inner filter cylinder 3 are connected with the shaft rods 16 through the couplings 17 in a transmission mode, the inner filter cylinder 3 can be driven to rotate through the couplings 17 when rotating, the slurry diffusion cylinder 15 can throw slurry onto the inner wall of the inner filter cylinder 3 through centrifugal force generated during rotation, and accordingly the slurry can be dispersed evenly and driven by the same power source, extra power source control is omitted, and the synchronism and the automation degree are high.

As shown in fig. 5, the slurry diffusion cylinder 15 is obliquely arranged so as to throw slurry out of different positions in the inner filter cylinder 3, the coupling 17 is a universal coupling 17, and the inner filter cylinder 3 and the slurry diffusion cylinder 15 are driven through the universal coupling 17.

As shown in fig. 7 to 10, the method further comprises: the cleaning frame 18, the spiral feeding shaft 19, the spur gear 20, the spur gear 21, the material guide pipe 22 and the communicating pipe 23 are connected to the supporting frame 02, two cleaning frames 18 which are in contact fit with the inner wall of the outer filter cartridge 4 are connected to the supporting frame 02, and the feeding holes 180 are formed in the cleaning frame 18, so that the feeding holes 180 face the rotation direction of the outer filter cartridge 4 during separation and filtration, and the trapped solid phase particles can be brought into the cleaning frame 18 through the feeding holes 180 when the outer filter cartridge 4 rotates, and one side of the cleaning frame 18, close to the outer filter cartridge 4, is of an open design, so that even if liquid phase in slurry enters the cleaning frame 18 along with the solid phase particles, the liquid phase in the slurry can be separated and filtered through the outer filter cartridge 4; a spiral feeding shaft 19 is rotationally arranged in the cleaning frame 18, and a spur gear 20 is connected to the upper end of the spiral feeding shaft 19; the upper side of the outer filter cartridge 4 is connected with a straight toothed ring 21 meshed with a straight gear 20, teeth of the straight toothed ring 21 are positioned on the inner side of the straight toothed ring 21, when the outer filter cartridge 4 rotates to separate and filter, the spiral feeding shaft 19 is driven to rotate through the meshing of the straight toothed ring 21 and the straight gear 20, the spiral feeding shaft 19 can convey solid-phase particles in the cleaning frame 18 upwards, so that the trapped finer solid-phase particles can be automatically and synchronously removed when the outer filter cartridge 4 rotates to separate and filter, the upper ends of the two cleaning frames 18 are communicated with a material guide pipe 22, the material guide pipe 22 penetrates through the upper part of the processing frame body 2, a communicating pipe 23 used for externally connecting a pump body is communicated between the upper ends of the two material guide pipes 22, and the solid-phase particles conveyed upwards by the spiral feeding shaft 19 can be discharged from the cleaning frame 18 through the material guide pipe 22 and the communicating pipe 23, so that the solid-phase particles which are separated and filtered finally can be conveniently collected.

As shown in fig. 10, further includes: the shovel plate 182, the width of the one side that the clearance frame 18 opened has feed inlet 180 is less than the width of the one side that the clearance frame 18 kept away from feed inlet 180 to when outer section of thick bamboo 4 brings the solid phase granule into clearance frame 18 in, can keep more solid phase granule in clearance frame 18, guarantee the transport operation of spiral pay-off axle 19 simultaneously, and be connected with shovel plate 182 on the one side that the clearance frame 18 opened has feed inlet 180, shovel plate 182 and outer section of thick bamboo 4's inner wall contact cooperation are in order to be suitable for the solid phase granule that will hold back to shovel to spiral pay-off axle 19 on, have improved the clearance effect.

As shown in fig. 10, further includes: the filter plate 181 is arranged on one side of the cleaning frame 18 opposite to the feed inlet 180, and is used for allowing liquid phase in slurry to permeate through the filter plate 181, so that the liquid phase is prevented from being discharged along with the solid phase particles when the solid phase particles in the outer filter cartridge 4 are cleaned.

It is apparent that the above described embodiments are only some, but not all, embodiments of the present invention, which merely represent preferred embodiments of the present invention, which are described more specifically and in detail, but are not to be construed as limiting the scope of the invention.

It should be noted that modifications, numbers, improvements and substitutions can be made by those skilled in the art without departing from the spirit of the invention, and therefore, based on the embodiments of the invention, all other embodiments obtained by those skilled in the art without making creative efforts fall within the protection scope of the present invention.

Claims

1. A centrifugal filter comprising: the device comprises a damping base (1), a processing frame body (2), a supporting frame (02), an inner filter cylinder (3), an outer filter cylinder (4), a feeding pipe (14) and a driving assembly, wherein the supporting frame (02) is fixedly connected to the inner side of the upper part of the processing frame body (2), the inner filter cylinder (3) and the outer filter cylinder (4) surrounding the inner filter cylinder (3) are rotationally arranged on the supporting frame (02), and the feeding pipe (14) extending to the inner filter cylinder (3) penetrates through the processing frame; the damping base (1) is provided with a driving component for driving the inner filter cylinder (3) and the outer filter cylinder (4) to rotate;

characterized in that the drive assembly comprises: the inner filter cartridge comprises a connecting disc (50), a large toothed ring (5), a small toothed ring (6), a small gear (8) and a large gear (9), wherein the lower side of the inner filter cartridge (3) is connected with the connecting disc (50) which is in an inverted T shape, and the lower end of the connecting disc (50) is connected with the large toothed ring (5); the lower side of the outer filter cylinder (4) is connected with a small toothed ring (6) surrounding the upper end of the connecting disc (50); install motor (7) on shock-absorbing mount (1), be connected with pinion (8) and gear wheel (9) on the output shaft of motor (7), the diameter of pinion (8) is less than gear wheel (5), pinion (8) with gear wheel (9) mesh respectively in gear wheel (5) with gear wheel (6).

2. A centrifugal filter according to claim 1, further comprising: the device comprises an inverted cone cylinder (10), a suction pipe (12) and a spiral scraping ring (11), wherein the upper part of a processing frame body (2) is connected with the inverted cone cylinder (10), a feeding opening (100) is formed in the inverted cone cylinder (10), and the suction pipe (12) extending to the inner bottom of the inverted cone cylinder (10) is penetrated through the processing frame body (2); a spiral scraping ring (11) is fixedly connected to the inverted cone (10), and the outer ring edge of the spiral scraping ring (11) is contacted with the inner wall of the inner filter cylinder (3) so as to be suitable for scraping off the trapped solid-phase particles; the spiral direction of the spiral scraping ring (11) from bottom to top is the same as the rotation direction of the inner filter cylinder (3) during separation and filtration, the angle between the cross section of the spiral scraping ring (11) and the inner filter cylinder (3) is an acute angle (R), and the upper end of the spiral scraping ring (11) is positioned at a feeding opening (100) on the inverted cone cylinder (10); the feed pipe (14) penetrates through the inverted cone (10).

3. A centrifugal filter according to claim 2, further comprising: the material blocking part (110) is characterized in that the edge of the inner ring of the spiral scraping ring (11) protrudes upwards to form the material blocking part (110) parallel to the inner wall of the inner filter cylinder (3), and the material blocking part (110) is used for further blocking solid-phase particles scraped by the spiral scraping ring (11).

4. A centrifugal filter according to claim 2, further comprising: the electromagnetic valve (13) is obliquely arranged at the lower part of the inverted cone (10), and the electromagnetic valve (13) is arranged at the position of the inverted cone (10) obliquely lower; the suction pipe (12) is close to the inclined lower position of the inverted cone (10).

5. A centrifugal filter according to claim 2, further comprising: the slurry diffusion cylinder (15), the downside of back taper section of thick bamboo (10) is equipped with slurry diffusion cylinder (15), the lower extreme of inlet pipe (14) extends to in slurry diffusion cylinder (15), the lower part of slurry diffusion cylinder (15) is opened there are many bin outlet in order to be used for with the diffusion of slurry discharge.

6. A centrifugal filter according to claim 5, further comprising: the slurry diffusion cylinder (15) is rotatably arranged on the lower side of the inverted cone cylinder (10), the lower side of the slurry diffusion cylinder (15) and the inner bottom side of the inner filter cylinder (3) are both connected with the shaft rods (16), and the two shaft rods (16) are in transmission connection through the shaft coupler (17).

7. A centrifugal filter according to claim 6, wherein the slurry diffusion cylinder (15) is arranged obliquely, the coupling (17) is a universal coupling (17), and the transmission of the inner filter cylinder (3) and the slurry diffusion cylinder (15) is realized through the universal coupling (17).

8. A centrifugal filter according to claim 2, further comprising: the cleaning device comprises a cleaning frame (18), a spiral feeding shaft (19), a spur gear (20), a spur gear ring (21), a material guide pipe (22) and a communicating pipe (23), wherein the supporting frame (02) is connected with the cleaning frame (18) which is in contact fit with the inner wall of the outer filter cylinder (4), a feeding hole (180) is formed in the cleaning frame (18), the feeding hole (180) faces to the rotating direction of the outer filter cylinder (4) during separation and filtration, and one side, close to the outer filter cylinder (4), of the cleaning frame (18) is of an open design; a spiral feeding shaft (19) is rotationally arranged in the cleaning frame (18), and a spur gear (20) is connected to the upper end of the spiral feeding shaft (19); the upper side of outer filter cylinder (4) is connected with straight tooth ring (21) with straight gear (20) meshing, the upper end intercommunication of clearance frame (18) has passage (22), passage (22) run through in the upper portion of handling frame body (2), the upper end intercommunication of passage (22) has communicating pipe (23) that are used for external pump body.

9. A centrifugal filter according to claim 8, further comprising: the shovel material plate (182), the width of one side that clearance frame (18) opened there is feed inlet (180) is less than the width of one side that clearance frame (18) kept away from feed inlet (180), just be connected with shovel material plate (182) on one side that clearance frame (18) opened there is feed inlet (180), shovel material plate (182) with the inner wall contact cooperation of outer filter cartridge (4) is suitable for the solid phase granule that will hold back to shovel on spiral pay-off axle (19).

10. A centrifugal filter according to claim 9, further comprising: the filter plate (181), one side of clearance frame (18) relative feed inlet (180) is filter plate (181) constitution, is used for supplying the liquid phase in the thick liquid to permeate through filter plate (181).