CN212403620U

CN212403620U - Filter

Info

Publication number: CN212403620U
Application number: CN202020288947.8U
Authority: CN
Inventors: 陈志鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-10
Filing date: 2020-03-10
Publication date: 2021-01-26
Anticipated expiration: 2030-03-10

Abstract

The utility model relates to a filter. The filter of the utility model include: the shell is provided with a water outlet hole and a water outlet, and the water outlet hole is positioned above the water outlet; the filter assembly is rotatably or movably arranged in the shell, is arranged below the water outlet hole and is arranged in a path of water flowing from the water outlet hole to the water outlet; a drive assembly that powers movement of the filter assembly. The filter has the advantages of high sewage treatment efficiency and convenient cleaning.

Description

Filter

Technical Field

The utility model relates to a filtering separation technical field in the operation, especially one kind relates to the filter.

Background

In a household or public yard, such as a pool or a swimming pool for storing water and culturing fish, the water body needs to be treated frequently to keep clean, otherwise, the water body deteriorates, and the frequent water change causes resource waste and too much cost. In the water treatment process, a biochemical filtering method is needed for organic matters or peculiar smell, and the used filtering medium is biochemical cotton and has two functions of filtering and biochemical adsorption. The filter in the past is a groove, a filter component is arranged in the groove, the filter component is formed by tightly wrapping tubular filter cotton outside a grid plate, the grid plate is positioned between two plate support plates, one support plate is provided with an opening communicated with grid plate grids, and the other end of the support plate is closed. The sewage to be treated enters the filter tank from the upper part of the tank, reaches the grid plate after passing through the filter cotton, and then flows out from one end of the support plate with the communicating holes through the gaps in the grid plate. As water enters the filter tank from above the tank, insoluble matter in the wastewater can settle on the filter cotton. And insoluble substances are precipitated on the filter cotton, and the precipitated part is weakened or even loses the filtering action and the biochemical adsorption action. And meanwhile, pollution discharge is difficult, and only the filter cotton is cleaned, so that pollution discharge can be realized. In a word, the filter with the structure has low sewage treatment efficiency and is inconvenient to clean.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model aims to provide a filter, it has that sewage treatment efficiency is higher, wash comparatively convenient advantage.

A filter comprising: the shell is provided with a water outlet hole and a water outlet, and the water outlet hole is positioned above the water outlet; the filter assembly is rotatably or movably arranged in the shell, is arranged below the water outlet hole and is arranged in a path of water flowing from the water outlet hole to the water outlet; a drive assembly that powers movement of the filter assembly.

Compared with the prior art, the filter adopt the rotatory or mode of displacement of drive assembly drive filtering component, make filtering component can take place relative motion with static or mobile water. When the filter purifies water, the filter assembly is driven to move, so that the water can be contacted with the filler for many times, and the filter is favorable for improving the filtering effect and the efficiency. When the filter needs to be cleaned, the water outlet hole is closed firstly, the water outlet hole is closed after water in the shell is drained, then the driving assembly drives the filtering assembly to rotate or displace, dirt stuck on the filler is thrown out or vibrated to fall below the roller through the movement of the filtering assembly, and finally the dirt is discharged from the water outlet hole by using water, so that the cleaning is convenient.

Furthermore, a water inlet pipe is arranged in the shell, and the water outlet hole is formed in the water inlet pipe.

Furthermore, along the axis of the water inlet pipe, two rows of water outlet holes are arranged on the peripheral side wall of the water inlet pipe, the two rows of water outlet holes are symmetrically arranged relative to the axis of the water inlet pipe, and the two rows of water outlet holes face the bottom of the shell.

Further, the filter assembly includes a roller disposed below the outlet opening, the roller being disposed in a path of water flowing from the outlet opening to the outlet opening; the roller is provided with a pipeline, a packing cavity is arranged on the periphery of the pipeline, a first through hole extending to the packing cavity is formed in the wall surface of the pipeline, and a second through hole extending to the packing cavity is formed in the periphery of the roller.

Further, the packing cavity surrounds the tube.

Further, the water outlets include a high water level water outlet, a medium water level water outlet and a low water level water outlet, the high water level water outlet, the medium water level water outlet and the low water level water outlet are arranged on the side surface of the shell, the high water level water outlet is located above the pipeline, the low water level water outlet is located below the pipeline, and the medium water level water outlet is located between the high water level water outlet and the low water level water outlet.

Furthermore, the roller is rotatably arranged in the shell, the rotation axis of the roller is horizontally arranged, the central line of the pipeline and the rotation axis of the roller are positioned on the same straight line, the high-water-level water outlet corresponds to the filling cavity positioned above the pipeline, the low-water-level water outlet corresponds to the filling cavity positioned below the pipeline, and the medium-water-level water outlet corresponds to the filling cavities positioned at the left side and the right side of the pipeline.

Furthermore, a positioning support piece is arranged in the shell, a first end face of the roller is rotatably arranged on the shell, the second end face of the roller is provided with the pipeline, the pipeline extends from the second end face of the roller to the first end face of the roller, the positioning support piece is inserted into the pipeline, and the roller rotates around the axis of the positioning support piece.

Further, be equipped with on the casing and adjust the spout, drive assembly includes: one end of the rotating shaft is rotatably arranged on the shell, and the other end of the rotating shaft is fixedly connected with the roller; the power source is a motor, the rotating shaft is driven to rotate by a transmission piece, and the transmission piece is a chain, a belt or a gear; and the mounting bracket is used for mounting the power source and is mounted on the shell through a bolt and a nut, the bolt slides in the adjusting sliding groove, and the bolt moves up and down in the vertical direction along the adjusting sliding groove.

Furthermore, an opening is formed in the outer side surface of the roller, a cover plate for opening or closing the opening is arranged on the outer side surface of the roller, and the second through hole is formed in the cover plate; at least one partition plate is arranged in the packing cavity, the partition plate divides the packing cavity into at least two spaces, and the at least two spaces are distributed around the axial direction of the pipeline; the shell is also provided with a water inlet, the water inlet is arranged on the first end surface of the shell, and the water outlet is arranged on the second end surface of the shell; the water inlet is communicated with the pipeline through the positioning support piece; the shell is also provided with a sewage draining outlet, the sewage draining outlet is arranged on the second end face of the shell, and the sewage draining outlet is positioned below the water outlet; the inner wall of the housing extends towards the midline of the bottom of the housing in the direction from the top of the housing to the bottom of the housing; the roller is cylindrical, and the section of the roller is circular or polygonal; the pipeline is cylindrical, and the section of the pipeline is circular or polygonal; the filter assembly further comprises a filler, the filler is arranged in the filler cavity, and the diameter of the filler is larger than the pore diameters of the first through hole and the second through hole; the oxygen supply assembly is arranged in the shell and is positioned below the water inlet; the oxygen supply assembly is an air pipe.

For a better understanding and an implementation, the present invention is described in detail below with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic view of a filter according to an embodiment;

FIG. 2 is an exploded view of the filter according to one embodiment;

FIG. 3 is an exploded view of a filter assembly according to one embodiment;

FIG. 4 is a schematic view of the internal structure of the drum according to one embodiment;

FIG. 5 is an enlarged schematic view at A in FIG. 4;

FIG. 6 is an enlarged schematic view at B of FIG. 4;

FIG. 7 is an exploded view of the filter according to the second embodiment;

FIG. 8 is an exploded view of the filter assembly of the third embodiment;

reference numerals:

100. a housing; 110. a water inlet pipe; 111. a water outlet hole; 120. a water outlet; 121. a high water level water outlet; 122. a middle water level water outlet; 123. a low water level water outlet; 130. adjusting the sliding chute; 140. positioning a support; 150. a sewage draining outlet; 160. a water inlet; 200. a filter assembly; 210. a drum; 211. a pipeline; 212. a packing cavity; 213. a first through hole; 214. a second through hole; 215. a partition plate; 216. a third through hole; 217. a cover plate; 220. a roller; 230. pressing a plate; 240. a seal member; 300. A drive assembly; 310. a rotating shaft; 320. a power source; 330. a first sprocket; 340. a second sprocket; 350. mounting a bracket; 360. and (4) bolts.

Detailed Description

Example one

A filter, see fig. 1-6, includes a housing 100, a filter assembly 200, and a drive assembly 300. Wherein, a water inlet pipe 110 is arranged in the casing 100, and a water outlet hole 111 is arranged on the water inlet pipe 110. The housing 100 is further provided with a water outlet 120, and the water outlet 120 is located below the water inlet pipe 110. The filter assembly 200 is rotatably or movably disposed in the housing 100, the filter assembly 200 is disposed in a path of water flowing from the inlet pipe 110 to the outlet port 120, the filter assembly 200 is located below the inlet pipe 110, and the filter assembly 200 is used to adsorb contaminants in the water. The driving assembly 300 is used to drive the filter assembly 200 to rotate or displace.

Referring to fig. 1 to 6, the housing 100 has a hollow cylindrical shape. The wall surfaces of the casing 100 on both sides in the axial direction thereof extend from both sides in the axial direction of the casing 100 toward the center line of the bottom of the casing 100 in the direction from the top of the casing 100 to the bottom of the casing 100, so that the lower portion of the inner wall of the casing 100 forms an inverted isosceles trapezoid, and water on the inner wall of the casing 100 is guided to the bottom of the casing 100 by the inclined surfaces on both sides in the axial direction of the casing 100.

Referring to fig. 1 to 6, the water inlet pipe 110 penetrates from the first end surface of the housing 100 to the second end surface of the housing 100. The water inlet end of the water inlet pipe 110 is located at the first end face side of the housing 100, and the closed end of the water inlet pipe 110 is located at the second end face side of the housing 100. In this embodiment, the water inlet pipe 110 is a circular pipe, and may also be a pipe 211 having a polygonal cross section, such as a square pipe. In addition, two rows of the outlet holes 111 are disposed on the circumferential side wall of the inlet pipe 110, the two rows of the outlet holes 111 are disposed symmetrically with respect to the axis of the inlet pipe 110, and the two rows of the outlet holes 111 face the bottom of the housing 100.

Referring to fig. 1 to 6, the water outlet 120 is disposed at the first end surface of the housing 100, and the water outlet 120 is mainly used for discharging water filtered by the filter assembly 200. Specifically, the water outlet 120 includes a high water level water outlet 121, a medium water level water outlet 122, and a low water level water outlet 123, and the high water level water outlet 121, the medium water level water outlet 122, and the low water level water outlet 123 are sequentially disposed on the first end surface of the housing 100 along a direction from the top of the housing 100 to the bottom of the housing 100. And, a drain 150 is further disposed on the first end surface of the housing 100, the drain 150 is close to the bottom of the housing 100, the drain 150 is located below the low water level water outlet 123, and the drain 150 is mainly used for discharging wastewater for cleaning the filtering assembly 200.

In addition, the side of the casing 100 is provided with an adjusting chute 130, the length direction of the adjusting chute 130 is vertically arranged, in this embodiment, four adjusting chutes 130 are arranged, and the distribution of the four adjusting chutes 130 forms a rectangle. A positioning support 140 is disposed at a first end of the inner cavity of the housing 100, the positioning support 140 is cylindrical, the positioning support 140 extends horizontally from the first end surface of the housing 100 to a second end surface of the housing 100, the first end of the positioning support 140 is disposed on the first end surface of the housing 100, and the second end of the positioning support 140 is used for receiving the filter assembly 200.

Referring to fig. 1 to 6, the filter assembly 200 is disposed in a path of water flowing from the water outlet hole 111 to the water outlet 120 and the sewage drain 150, the filter assembly 200 is positioned below the water inlet pipe 110, and the filter assembly 200 is positioned at one side of the high water level water outlet 121, the medium water level water outlet 122, the low water level water outlet 123 and the sewage drain 150. The filter assembly 200 includes a packing (not shown), a drum 210. The filler is a particle capable of adsorbing dirt in water, and can be filter material, ceramic ring, bacteria house, plastic ball, coral stone, filter bead, medical stone, ammonia absorbing stone, volcanic rock, etc. The drum 210 is a cylinder, and the cross section of the drum 210 is any one of a circle, a triangle, a quadrangle, a pentagon, a hexagon, an octagon, and other polygons, which is not limited herein, but in the present embodiment, the drum 210 is a cylinder. A first end of the drum 210 is rotatably disposed on a second end of the casing 100; the second end of the roller 210 is connected to the second end of the positioning support 140, the axis of the roller 210 is aligned with the axis of the positioning support 140, and the roller 210 is rotatable around the axis of the positioning support 140. Specifically, a pipe 211 is arranged in the drum 210, the pipe 211 extends from the middle of the second end surface of the drum 210 to the first end surface of the drum 210, the axis of the pipe 211 and the axis of the drum 210 are located on the same straight line, the second end of the pipe 211 is sleeved on the outer side of the second end of the positioning support 140, the pipe 211 is located between the high water level water outlet 121 and the low water level water outlet 123, and the pipe 211 and the medium water level water outlet 122 are approximately located on the same height. The cross section of the pipe 211 is not limited herein, and in the present embodiment, the cross section of the pipe 211 is circular. Next, a packing cavity 212 is provided on the circumferential side of the pipe 211, the packing cavity 212 is used for storing packing, the high level water outlet 121 corresponds to the packing cavity 212 located above the pipe 211, the low level water outlet 123 corresponds to the packing cavity 212 located below the pipe 211, and the medium level water outlet 122 corresponds to the packing cavities 212 located on the left and right sides of the pipe 211. A first through hole 213 communicating with the packing chamber 212 is provided on the inner wall of the duct 211, a second through hole 214 communicating with the packing chamber 212 is provided on the circumferential side surface of the drum 210, the aperture of the first through hole 213 is smaller than the diameter of the packing particles, and the aperture of the second through hole 214 is also smaller than the diameter of the packing particles.

In order to reduce the friction between the roller 210 and the positioning support 140, the roller 210 is in clearance fit with the positioning support 140, at least three rollers 220 are rotatably disposed on the second end surface of the roller 210, the peripheral side surfaces of the rollers 220 are tangent to the peripheral side surface of the positioning support 140, the rotation direction of the rollers 220 is parallel to the second end surface of the roller 210, and during the rotation of the roller 210, the rollers 220 move along the peripheral side surface of the positioning support 140 to convert the sliding friction between the roller 210 and the positioning support 140 into rolling friction.

The drum 210 is further modified to have at least one partition 215 disposed in the packing cavity 212, the partition 215 dividing the packing cavity 212 into at least two spaces, and in this embodiment, four partitions 215 are disposed in the packing cavity 212, and the partitions 215 vertically extend from a first end surface of the packing cavity 212 to a second end surface of the packing cavity 212, so that the four partitions 215 divide the packing cavity 212 into four spaces, and the four spaces are distributed around the axis of the pipe 211. And, a third through hole 216 is provided on each partition 215, the third through hole 216 being used to communicate adjacent spaces. In addition, an opening for replacing the packing is provided on the circumferential side surface of the drum 210 for each space. A cover 217 for opening or closing the opening is provided at the opening, the cover 217 is hinged to the circumferential side of the drum 210, and the second through-hole 214 described above is also provided at the cover 217.

Referring to fig. 1 to 6, the driving assembly 300 includes a rotating shaft 310, a transmission member (not shown), and a power source 320. A first end of the rotating shaft 310 is rotatably disposed on a second end of the casing 100, and a second end of the rotating shaft 310 is fixedly connected with a first end of the drum 210. The power source 320 is disposed on the inner wall of the casing 100, and the power source 320 drives the rotating shaft 310 to rotate through a transmission member, which may be a chain, a belt or a gear. In this embodiment, the power source 320 is a motor, the transmission member is a chain, a first sprocket 330 is fixedly connected to an output shaft of the motor, a second sprocket 340 is fixedly connected to the rotating shaft 310, and the first sprocket 330 and the second sprocket 340 are connected by the chain. In addition, in order to protect the power source 320, the power source 320 is disposed at the middle upper portion of the inner cavity of the case 100, and the power source 320 is located above the water inlet 160.

To facilitate adjustment of the tightness of the transmission, the drive assembly 300 further includes a mounting bracket 350 and a bolt 360. Specifically, the power source 320 is detachably mounted to a mounting bracket 350, and the mounting bracket 350 is mounted to the inner wall of the casing 100 by bolts 360. The bolt 360 is slidably disposed in the adjusting sliding slot 130, and the bolt 360 can move up and down in the vertical direction along the adjusting sliding slot 130. The relative position of the power source 320 and the rotating shaft 310 is adjusted by adjusting the position of the power source 320 in the vertical direction, so as to adjust the tightness of the transmission member. In the present embodiment, the mounting bracket 350 is mounted using four bolts 360, and the four bolts 360 are respectively disposed in the four adjustment chutes 130.

The working process of purifying water: the sewage is sprayed out from the water outlet hole 111 of the water inlet pipe 110, then flows from top to bottom, flows to the bottom of the shell 100 after sequentially passing through the second through hole 214, the filler cavity 212, the first through hole 213, the pipeline 211, the first through hole 213, the filler cavity 212 and the second through hole 214, contacts with the filler, finally flows to the water outlet 120, and flows to the outside from the water outlet 120; in the above operation, the drum 210 may be intermittently driven to rotate by the motor, which helps to improve the purification effect.

The working process of cleaning the filler is as follows: firstly, the water inlet pipe 110 is closed, the water in the shell 100 is drained through the water outlet 120 and the sewage draining outlet 150, the water outlet 120 and the sewage draining outlet 150 are closed after the water in the shell 100 is drained, then the roller 210 is driven to rotate through the motor, under the centrifugal action, dirt on the filler can be thrown out of the roller 210, clean water is sprayed to the filler and the inner wall of the shell 100 through the water inlet pipe 110, the filler on the roller 210 is further cleaned, meanwhile, the dirt adhered to the inner wall of the shell 100 is washed away, finally, the sewage draining outlet 150 is opened, and the sewage and the dirt are drained away through the sewage draining outlet 150.

Compared with the prior art, the filter of the embodiment has the following effective effects:

1. the water inlet pipe 110 is arranged above the filtering component 200, and the filtering component 200 adopts a cylindrical structure to be filled with the filler, so that the sewage can be in secondary contact with the filler, and the water purification effect is improved;

2. when water is purified, the driving assembly 300 drives the roller 210 to rotate, so that the contact area between the sewage and the roller 210 can be increased, and the water purification effect is improved;

3. the height position of the water outlet 120 of the filter can be selected according to requirements, and when the requirement on the purification degree of water is the highest, the low-water-level water outlet 123 is selected, so that sewage can be discharged after twice filling; when the requirement on the water purification degree is general, the medium water level water outlet 122 is selected, so that the sewage can be discharged after being filled once; when the requirement on the purification degree of water is minimum, a high water level water outlet 121 is selected;

4. because the design mode that the pipeline 211 is wrapped by the packing cavity 212 is adopted, water flowing down naturally can sequentially pass through the packing cavity 212 above the pipeline 211 and the packing cavity 212 below the pipeline 211, and the water purification effect and the water purification efficiency are improved.

Example two

A filter, see fig. 7, which differs from the filter of the first embodiment in that: a water inlet 160 is further provided on the first end surface of the housing 100, the water inlet 160 is located between the high level water outlet 121 and the low level water outlet 123, and the water inlet 160 is communicated with the first end of the positioning support 140.

The working process of purifying water: the sewage is gathered into the positioning support member 140 from the water inlet 160, then flows into the pipeline 211 from the positioning support member 140, then flows into the cavity of the shell 100 after sequentially passing through the first through hole 213, the packing cavity 212 and the second through hole 214, then flows to the water outlet 120 under the action of the lower surfaces of the two sides of the inner cavity of the shell 100 and the bottom surface of the inner cavity of the shell 100, and finally flows to the outside from the water outlet 120; in the above operation, the drum 210 may be intermittently driven to rotate by the motor, which helps to improve the purification effect.

The working process of cleaning the filler is as follows: firstly, the water inlet 160 and the water inlet pipe 110 are closed, the water in the shell 100 is drained through the water outlet 120 and the sewage outlet 150, the water outlet 120 and the sewage outlet 150 are closed after the water in the shell 100 is drained, then the roller 210 is driven to rotate through the motor, under the centrifugal action, the sewage on the filler can be thrown out of the roller 210, then the water inlet pipe 110 is utilized to spray clean water on the filler and the inner wall of the shell 100, the filler on the roller 210 is further cleaned, meanwhile, the sewage adhered to the inner wall of the shell 100 is washed away, finally, the sewage outlet 150 is opened, and the sewage are drained away through the sewage outlet 150.

EXAMPLE III

A filter, see fig. 8, which differs from the filter of the second embodiment in that: in order to prevent water from flowing into the inner cavity of the casing 100 from the gap between the drum 210 and the positioning support 140, a pressing plate 230 and a sealing member 240 are further provided on the second end surface of the drum 210. Specifically, the platen 230 is detachably mounted on the second end surface of the drum 210. The sealing member 240 is disposed between the pressing plate 230 and the second end surface of the drum 210, the sealing member 240 has a circular ring shape, an outer diameter of the sealing member 240 is larger than an aperture of the pipe 211 on the second end surface of the drum 210, and an inner diameter of the sealing member 240 is smaller than an outer diameter of the positioning support 140. When the positioning support member 140 is inserted into the pipe 211, the end surface of the positioning support member 140 abuts against the inner portion of the sealing member 240, and the inner portion of the sealing member 240 is bent into the pipe 211, so as to reduce the gap between the drum 210 and the positioning support member 140 and ensure that water flows into the filling cavity 212 and then flows to the water outlet 120.

Example four

A filter which differs from the filter of embodiment one in that: the oxygen supply component (not shown) is arranged at the bottom of the inner cavity of the shell 100 and is positioned below the water outlet 120 of the water inlet pipe 110, so that the oxygen supply component can be positioned in water, the growth of aerobic beneficial bacteria and the growth of anaerobic harmful bacteria can be favorably inhibited; specifically, the oxygen supply assembly is gas tube, the gas tube is gas tube in the prior art, and the specific structure thereof is not discussed here. The aeration pipe can provide sufficient oxygen to the bacterium in the filler, and the bacterium in the filler of being convenient for grows, and harmful substance such as ammonia nitrogen gets rid of aquatic impurity through a large amount of bacterials absorption water, improves purifying effect.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. A filter, comprising:

the water outlet structure comprises a shell (100), a water outlet hole (111) and a water outlet (120) are formed in the shell, and the water outlet hole (111) is located above the water outlet (120);

a filter assembly (200) rotatably or movably disposed in the housing (100), disposed below the water outlet hole (111), and disposed in a path of water flowing from the water outlet hole (111) to the water outlet (120);

a drive assembly (300) that powers movement of the filter assembly (200).

2. The filter of claim 1, wherein: be equipped with inlet tube (110) in casing (100), apopore (111) set up on inlet tube (110).

3. The filter of claim 2, wherein: along the axis of inlet tube (110), be provided with two rows on the circumference lateral wall of inlet tube (110) apopore (111), two rows apopore (111) are about the axis symmetry of inlet tube (110) sets up, two rows apopore (111) are towards the bottom of casing (100).

4. The filter of claim 1, wherein: the filter assembly (200) comprises a drum (210), the drum (210) being arranged below the outlet opening (111), the drum (210) being arranged in the path of water flowing from the outlet opening (111) to the outlet opening (120); be equipped with pipeline (211) in cylinder (210), the week side of pipeline (211) is equipped with packing chamber (212), the wall of pipeline (211) is equipped with and extends to first through-hole (213) of packing chamber (212), the week side of cylinder (210) is equipped with and extends to second through-hole (214) of packing chamber (212).

5. The filter of claim 4, wherein: the packing cavity (212) surrounds the pipe (211).

6. The filter of claim 5, wherein: the water outlet (120) comprises a high water level water outlet (121), a medium water level water outlet (122) and a low water level water outlet (123), the high water level water outlet (121), the medium water level water outlet (122) and the low water level water outlet (123) are arranged on the side surface of the shell (100), the high water level water outlet (121) is positioned above the pipeline (211), the low water level water outlet (123) is positioned below the pipeline (211), and the medium water level water outlet (122) is positioned between the high water level water outlet (121) and the low water level water outlet (123).

7. The filter of claim 6, wherein: the rotary drum (210) is rotatably arranged in the shell (100), a rotating shaft (310) line of the rotary drum (210) is horizontally arranged, a central line of the pipeline (211) and the rotating shaft (310) line of the rotary drum (210) are positioned on the same straight line, the high-water-level water outlet (121) corresponds to the packing cavity (212) positioned above the pipeline (211), the low-water-level water outlet (123) corresponds to the packing cavity (212) positioned below the pipeline (211), and the medium-water-level water outlet (122) corresponds to the packing cavities (212) positioned at the left side and the right side of the pipeline (211).

8. The filter of claim 7, wherein: be equipped with location support piece (140) in casing (100), the first terminal surface of cylinder (210) rotates to be set up on casing (100), the second terminal surface of cylinder (210) is equipped with pipeline (211), pipeline (211) follow the second terminal surface of cylinder (210) extend to the first terminal surface of cylinder (210), location support piece (140) insert in pipeline (211), cylinder (210) are around the axis of location support piece (140) is rotatory.

9. A filter according to claim 4, characterised in that the housing (100) is provided with an adjustment chute (130), the drive assembly (300) comprising:

one end of the rotating shaft (310) is rotatably arranged on the shell (100), and the other end of the rotating shaft is fixedly connected with the roller (210);

the power source (320) is a motor and drives the rotating shaft (310) to rotate through a transmission piece, and the transmission piece is a chain or a belt or a gear;

a mounting bracket (350) for mounting the power source (320) which is mounted on the housing (100) by a bolt (360) nut, the bolt (360) sliding in the adjustment chute (130), the bolt (360) moving up and down in a vertical direction along the adjustment chute (130).

10. The filter of claim 8, wherein:

an opening is formed in the outer side face of the roller (210), a cover plate (217) used for opening or closing the opening is arranged on the outer side face of the roller (210), and the second through hole (214) is formed in the cover plate (217);

at least one partition plate (215) is arranged in the packing cavity (212), and the partition plate (215) divides the packing cavity (212) into at least two spaces which are distributed around the axial direction of the pipeline (211);

the shell (100) is also provided with a water inlet (160), the water inlet (160) is arranged on the first end surface of the shell (100), and the water outlet (120) is arranged on the second end surface of the shell (100);

the water inlet (160) communicates with the duct (211) through the positioning support (140);

the shell (100) is also provided with a sewage draining outlet (150), the sewage draining outlet (150) is arranged on the second end face of the shell (100), and the sewage draining outlet (150) is positioned below the water outlet (120);

the inner wall of the shell (100) extends towards the middle line of the bottom of the shell (100) along the direction from the top of the shell (100) to the bottom of the shell (100);

the roller (210) is cylindrical, and the section of the roller is circular or polygonal;

the pipeline (211) is cylindrical, and the section of the pipeline is circular or polygonal;

the filter assembly (200) further comprises a filler, the filler is arranged in the filler cavity (212), and the diameter of the filler is larger than the aperture of the first through hole (213) and the second through hole (214);

the oxygen supply assembly is arranged in the shell (100) and is positioned below the water inlet (160);

the oxygen supply assembly is an air pipe.