CN114870496B - Filtering system capable of automatically cleaning filter screen for water pollution treatment - Google Patents

Abstract

This application relates to a filtration system for water pollution treatment that can automatically clean the filter screen, belonging to the technical field of filtration equipment. The system includes a treatment box, a collection box is connected to the treatment box, and the collection box is connected to a dirt treatment device; first The filter screen is fixedly installed inside the treatment box. The internal space of the treatment box is divided into a primary filter chamber and a first filter chamber through a first filter screen. The primary filter chamber and the first filter chamber are connected with a water inlet pipe and a drainage pipe respectively; second The filter screen is slidably installed between the primary filter chamber and the treatment box. The second filter screen is in contact with the first filter screen. A first drive device is installed on the outer wall of the treatment box. The power output end of the first drive device is connected to the second filter screen. The scraper assembly is installed at the mouth of the collection box, and a second driving device is installed on the outer wall of the treatment box. The power output end of the second driving device is connected to the scraper assembly to drive the scraper assembly to rotate. Therefore, the system improves sewage treatment efficiency by automatically cleaning the filter to save processing time.

Description

A filtration system for water pollution treatment that can automatically clean the filter screen

Technical field

The present application relates to the technical field of filtration equipment, and in particular to a filtration system for water pollution treatment that can automatically clean the filter screen.

Background technique

Sewage treatment is generally divided into production sewage and domestic sewage treatment. Production sewage includes industrial sewage, agricultural sewage and medical sewage, etc. Domestic sewage mainly refers to sewage generated in daily life. The existing water pollution treatment system mainly deals with flocculation and sedimentation, solid-liquid separation, and disinfection and sterilization. During the solid-liquid separation process of water pollution, it is often necessary to stop the sewage treatment process and then clean the filter. In order to prevent impurities from clogging the mesh of the filter and affecting subsequent sewage treatment, since the treatment needs to be stopped to clean the filter, it greatly affects the efficiency of sewage treatment. Based on this, a water that can automatically clean the filter is easy to improve the treatment efficiency. Filtration systems for pollution treatment are urgently needed.

Contents of the invention

The purpose of the embodiments of the present application is to provide a filtration system for water pollution treatment that can automatically clean the filter screen, so as to solve the technical problem that the existing filtration system for water pollution treatment can only clean the filter screen after stopping sewage treatment.

In order to achieve the above purpose, this application provides the following technical solutions:

The embodiment of the present application provides a filtration system for water pollution treatment that can automatically clean the filter screen, including:

A treatment box, the treatment box is connected with a collection box, and the collection box is connected with the sewage treatment device;

The first filter screen is fixedly installed inside the treatment box. The internal space of the treatment box is divided into a primary filter chamber and a first filter chamber through the first filter screen. The primary filter chamber and the first filter chamber The chambers are respectively connected with water inlet pipes and drainage pipes, and the collection box is connected with the primary filter chamber;

The second filter screen is slidably installed between the primary filter chamber and the treatment box. The second filter screen is in contact with the first filter screen. A first driving device is installed on the outer wall of the treatment box. , the power output end of the first driving device is connected to the second filter screen to drive the second filter screen to translate back and forth between the primary filter chamber and the collection box;

The scraper assembly is rotatably installed at the mouth of the collection box. A second driving device is installed on the outer wall of the treatment box. The power output end of the second driving device is connected to the scraper assembly to drive The scraper assembly rotates.

Further, in order to better implement the present invention, the scraper assembly includes a connecting rod and a scraper adapted to the second filter screen. The connecting rod is rotatably inserted into the top wall and bottom of the treatment box. wall, the second driving device is a motor, the rotating shaft of the motor is connected to the connecting rod, the scraper is fixed on the connecting rod, in the first state, the scraper is away from one end of the connecting rod against the second filter.

Further, in order to better realize the present invention, the number of the collection boxes is two, and the two collection boxes are arranged on both sides of the treatment box, and a box mouth of each collection box is installed. The scraper assembly, each scraper assembly is connected to one of the motors, and the primary filter chamber is divided into a second filter chamber located in the treatment box and a second filter chamber located in the processing box through two scraper assemblies. The third filter chamber in the collection box.

Further, in order to better implement the present invention, the first driving device includes a servo motor and a gear installed on the rotating shaft of the servo motor, a rack is provided on the top wall of the second filter screen, and the second filter screen is provided with a rack. A through hole is provided on the top wall of the second filter chamber, and the gear is rotatably disposed in the through hole and meshes with the rack;

A first straight slide is provided on the inner bottom wall of the treatment box, and a second straight slide is provided on the inner bottom wall of the collection box. The second straight slide is docked with the first straight slide. A chute is formed, and the bottom end of the second filter screen is slidably inserted into the chute.

Further, in order to better implement the present invention, a water purification device is provided in the first filter chamber, and the internal space of the first filter chamber is divided into a liquid storage chamber and a liquid drainage chamber through the purification device. The liquid chamber is located between the purification device and the first filter screen, and the drainage pipe is connected with the liquid drainage chamber.

Further, in order to better implement the present invention, the purification device includes a first screen, a second screen and activated carbon, a first baffle is provided on the inner bottom wall of the first filter chamber, and the first baffle is provided on the inner bottom wall of the first filter chamber. A second baffle is provided on the inner top wall of the filter chamber, and the first baffle is located between the second baffle and the first filter. The first baffle and the first filter A first screen is fixedly installed between the inner top walls of the chamber, a second screen is fixedly installed between the second baffle and the inner bottom wall of the first filter chamber, and the activated carbon is filled in the first filter chamber. In the internal space formed by a baffle, the first screen, the second baffle and the second screen, a slag discharge pipe is connected to the lower part of the liquid storage chamber.

Further, in order to better implement the present invention, the sewage treatment device includes a treatment tank and a filter device installed in the treatment tank. The internal space of the treatment tank is divided into a slag accumulation area and a slag accumulation area through the filter device. A return flow area, the slag accumulation area is located above the return flow area, the slag accumulation area is connected with the collection box, and a return pipe is connected to the return flow area.

Further, in order to better realize the present invention, the filtering device includes a filtering tank with a plurality of pores, a side wall of the processing tank is provided with an opening adapted to the filtering tank, and the processing tank A guide rail is respectively provided on two opposite inner walls of the tank. The filter tank is inserted into the treatment tank through the through port, and both sides of the filter tank are slidably overlapped on the two guide rails.

Further, in order to better implement the present invention, a handle for moving the filter tank is provided on the side wall of the filter tank.

Compared with the prior art, the present invention has the following beneficial effects:

The invention provides a filtration system for water pollution treatment that can automatically clean the filter screen. It includes a treatment box, a dirt treatment device, a first filter screen, a second filter screen and a scraper assembly. The treatment box is connected with a collection box. The box is connected with the dirt treatment device; the first filter screen is fixedly installed inside the treatment box, and the internal space of the treatment box is divided into a primary filter chamber and a first filter chamber through the first filter screen. The primary filter chamber and the first filter chamber are respectively There are water inlet pipes and drainage pipes connected, and the collection box is connected with the primary filter chamber; the second filter screen is slidably installed between the primary filter chamber and the treatment box, and the second filter screen is attached to the first filter screen, and the outer wall of the treatment box A first driving device is installed on the top, and the power output end of the first driving device is connected to the second filter screen to drive the second filter screen to translate back and forth between the primary filter chamber and the collection box; the scraper assembly is rotatably installed in the collection box. At the box mouth, a second driving device is installed on the outer wall of the treatment box, and the power output end of the second driving device is connected to the scraper assembly to drive the scraper assembly to rotate; in the first state, the scraper assembly is against the second filter net; in the second state, the scraper assembly is separated from the second filter screen. In this way, the first driving device drives the second filter screen to slide in the primary filter chamber and the collection box, and the second driving device drives the scraper assembly to rotate to move away from or Fit the surface of the second filter to intermittently scrape off the dirt on the second filter.

Through the above structure, the filtration system for water pollution treatment that can automatically clean the filter screen provided by the present invention realizes the function of automatically cleaning the filter screen during the filtration process through the cooperation of the first driving device and the second driving device, and solves the problem of existing problems. The technical problem of filter systems for water pollution treatment that the filter can only be cleaned after sewage treatment is stopped. Specifically, the sewage is filtered through the first filter screen and the second filter screen in the primary filter chamber. The first driving device drives the second filter screen to move back and forth between the primary filter chamber and the collection box. When the second filter screen moves toward the collection box, When moving sideways, the scraper assembly moves away from the second filter screen under the control of the second driving device, so that the second filter screen with impurities enters the collection box. When the second filter screen moves out of the collection box, the scraper assembly moves in the second filter screen. The driving device is driven against the second filter screen. As the second filter screen moves, the scraper assembly scrapes off the impurities on the second filter screen, leaving the impurities in the collection box, and then removes the impurities in the collection box. Discharge into sewage treatment device. Therefore, the filtration system for water pollution treatment that can automatically clean the filter screen provided by the present invention uses the cooperation of the first driving device and the second driving device to enable the system to automatically clean the filter screen during the filtration process, thereby improving the efficiency of sewage treatment. The structure Reasonable and practical. Moreover, the staggered installation between the first filter screen and the second filter screen can adjust the size of the filter holes, thereby controlling the filtration processing rate. Moreover, the first filter screen provides protection for filtration, preventing the movement of the second filter screen from affecting the filtration effect. .

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, therefore This should not be regarded as limiting the scope. For those of ordinary skill in the art, other relevant drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic structural diagram of a filtration system for water pollution treatment that can automatically clean the filter provided by an embodiment of the present invention;

Figure 2 is a cross-sectional view of a filtration system for water pollution treatment that can automatically clean the filter provided by an embodiment of the present invention;

Figure 3 is another cross-sectional view of a filtration system for water pollution treatment that can automatically clean the filter provided by an embodiment of the present invention;

Figure 4 is a cross-sectional view of the waste treatment device in the embodiment of the present invention;

Figure 5 is a schematic structural diagram of the scraper assembly in the embodiment of the present invention;

Figure 6 is a schematic structural diagram of the second filter screen in the embodiment of the present invention.

In the picture: 1-treatment box; 2-collection box; 3-dirt treatment device; 31-treatment tank; 32-filtration device; 4-first filter; 5-second filter; 6-servo motor; 7 -Scraper assembly; 71-motor; 72-scraper; 73-connecting rod; 8-second filter chamber; 9-third filter chamber; 10-through hole; 11-gear; 12-rack; 13-purification device ; 131-first screen; 132-second screen; 133-activated carbon; 14-liquid storage chamber; 15-drainage chamber; 16-drainage pipe; 17-return pipe; 18-chute; 19-guide rail; 20-handle; 21-slag discharge pipe.

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. It should be noted that similar reference numerals and letters represent similar items in the following figures, therefore, once an item is defined in one figure, it does not need further definition and explanation in subsequent figures.

The terms "comprises," "comprises," or any other variation thereof are intended to cover a non-exclusive inclusion such that a process, method, article or apparatus including a list of elements includes not only those elements but also others not expressly listed elements, or elements inherent to such process, method, article or equipment. Without further limitation, an element defined by the statement "comprises a..." does not exclude the presence of additional identical elements in a process, method, article, or apparatus that includes the stated element.

Example 1:

As shown in Figures 1 to 6, the embodiment of the present application provides a filtration system for water pollution treatment that can automatically clean the filter screen to solve the technical problem of low sewage treatment efficiency in the prior art. The system includes a treatment box 1, a dirt treatment device 3, a first filter 4, a second filter 5 and a scraper assembly 7, in which:

The treatment box 1 is a high-strength corrosion-resistant welded part. The treatment box 1 is connected with a collection box 2. The collection box 2 is connected with the waste treatment device 3. Specifically, the side wall of the treatment box 1 is provided with a collection box 2. One side of the collection box 2 penetrates through the matching notch to form a box opening. The opening of the collection box 2 is welded to the edge of the above-mentioned notch of the treatment box 1, and the inner bottom wall of the above-mentioned collection box 2 is flush with the lower side wall of the above-mentioned notch. Flat, the inner top wall of the collection box 2 is flush with the upper side wall of the above-mentioned notch.

The first filter screen 4 is a stainless steel mesh plate. The first filter screen 4 is fixedly installed inside the treatment box 1. The internal space of the treatment box 1 is divided into a primary filter chamber and a first filter chamber through the first filter screen 4. The primary filter chamber and The first filter chamber is connected with a water inlet pipe and a drain pipe 16 respectively, and the collection box 2 is connected with the primary filter chamber. Specifically, the boundary of the first filter screen 4 is tightly welded to the treatment box 1, and one end of the first filter screen 4 The side walls are flush with the inner side wall of the above-mentioned collection box 2 .

The second filter screen 5 is a stainless steel mesh plate. The second filter screen 5 is slidably installed between the primary filter chamber and the collection box 2. The second filter screen 5 is in contact with the first filter screen 4. The outer wall of the treatment box 1 is installed with The first driving device, the power output end of the first driving device is connected to the second filter screen 5 to drive the second filter screen 5 to translate back and forth between the primary filter chamber and the collection box 2. The length of the second filter screen 5 is equal to the above-mentioned The sum of the width of the first filter screen 4 and the width of the collection box 2 ensures that sewage always passes through the first filter screen 4 and the second filter screen 5 .

The scraper assembly 7 is rotatably installed at the mouth of the collection box 2. A second driving device is installed on the outer wall of the treatment box 1. The power output end of the second driving device is connected to the scraper assembly 7 to drive the scraper assembly 7 to rotate. , in the first state, the scraper assembly 7 is against the second filter screen 5; in the second state, the scraper assembly 7 is separated from the second filter screen 5. Specifically, during the filtration process, particulate impurities remain in the second filter screen 5. On the screen 5, when the first driving device drives the second filter screen 5 to move toward the collection box 2, the second driving device drives the scraper assembly 7 to rotate so that the scraper assembly 7 is separated from the second filter screen 5. When the screen 5 moves out of the collection box 2, the second driving device drives the scraper assembly 7 to abut the second filter screen 5 to scrape off impurities.

Through the above structure, the filtration system for water pollution treatment that can automatically clean the filter screen provided in this embodiment realizes the function of automatically cleaning the filter screen during the filtration process through the cooperation of the first driving device and the second driving device, and solves the problem of existing problems. There is a technical problem that the filter system for water pollution treatment can only clean the filter after stopping the sewage treatment. Specifically, the sewage is filtered through the first filter 4 and the second filter 5 in the primary filter chamber, and the first driving device drives the second filter 5 to move back and forth between the primary filter chamber and the collection box 2. 5 moves toward the collection box 2, the scraper assembly 7 moves away from the second filter screen 5 under the control of the second driving device, so that the second filter screen 5 with impurities enters the collection box 2, and in the second filter screen 5 When the collection box 2 is removed, the scraper assembly 7 is driven by the second driving device to abut the second filter screen 5. As the second filter screen 5 moves, the scraper assembly 7 scrapes off the second filter screen 5. of impurities, so that the impurities remain in the collection box 2, and then the impurities in the collection box 2 are discharged into the sewage treatment device 3. Therefore, the filtration system for water pollution treatment provided by this embodiment that can automatically clean the filter screen uses the cooperation of the first driving device and the second driving device to enable the system to automatically clean the filter screen during the filtration process, thereby improving the efficiency of sewage treatment. Reasonable structure and strong practicality. Moreover, the staggered installation between the first filter screen 4 and the second filter screen 5 can adjust the size of the filter holes, thereby controlling the filtration processing rate. Moreover, the first filter screen 4 provides a guarantee for filtration and prevents the second filter screen 5 from being blocked. Movement affects the filtering effect.

An optional implementation of this embodiment is as follows: the scraper assembly 7 includes a connecting rod 73 and a scraper 72 adapted to the second filter screen 5. The scraper 72 is a wear-resistant part with good toughness, and the connecting rod 73 is rotated and inserted into the On the top and bottom walls of the treatment box 1, the second driving device is a motor 71. The rotating shaft of the motor 71 is connected to the connecting rod 73. The scraper 72 is fixed on the connecting rod 73. In the first state, the scraper 72 is away from the connecting rod 73. One end of the second filter screen 5 is against the second filter screen 5. Specifically, when the first driving device drives the second filter screen 5 to enter the collection box 2, the scraper 72 is kept away from the second filter screen 5 to avoid scraping impurities into the treatment box 1. , when the second filter screen 5 moves out of the collection box 2, the scraper 72 abuts the second filter screen 5 to scrape the impurities on the second filter screen 5 into the collection box 2 for discharge.

More preferably, the number of collection boxes 2 is two, and the two collection boxes 2 are located on both sides of the treatment box 1. A scraper assembly 7 is installed at the mouth of each collection box 2, and each scraper assembly 7 Connected to an electric motor 71, the primary filter chamber is divided into a second filter chamber 8 located in the treatment box 1 and a third filter chamber 9 located in the collection box 2 through two scraper assemblies 7. In this way, in the second filter screen 5 During the movement, the scraper assembly 7 on one side is scraping off impurities on the second filter screen 5, making the scraping efficiency higher, the structure more reasonable, and the practicability stronger.

Optionally, the first driving device includes a servo motor 6 and a gear 11 installed on the rotating shaft of the servo motor 6. A rack 12 is provided on the top wall of the second filter screen 5, and a rack 12 is provided on the top wall of the second filter chamber 8. The through hole 10 and the gear 11 are rotatably provided in the through hole 10 and mesh with the rack 12. The servo motor 6 can accurately control the moving distance of the second filter screen 5 to facilitate precise adjustment of the first filter screen 4 and the second filter screen 5. The staggered position controls the pore size of the effective filter holes to control the filtration processing rate;

A first straight slide is provided on the inner bottom wall of the treatment box 1, and a second straight slide is provided on the inner bottom wall of the collection box 2. The second straight slide is connected with the first straight slide to form a chute 18. The bottom end of the second filter screen 5 is slidably inserted into the chute 18. In this way, the second filter screen 5 moves back and forth in the chute 18 more smoothly and the structure is more reasonable.

An optional implementation of this embodiment is as follows: a water purification device 13 is provided in the first filter chamber. The internal space of the first filter chamber is divided into a liquid storage chamber 14 and a liquid discharge chamber 15 through the purification device 13. The liquid storage chamber 14 Located between the purification device 13 and the first filter 4, the drainage pipe 16 is connected to the liquid drainage chamber 15. The filtrate processed by the first filter 4 and the second filter 5 enters the liquid storage chamber 14 and is processed by the purification device 13. It enters the drainage chamber 15 and is finally discharged through the drainage pipe 16.

Optionally, the purification device 13 includes a first screen 131, a second screen 132 and activated carbon 133. A first baffle is provided on the inner bottom wall of the first filter chamber, and a first baffle is provided on the inner top wall of the first filter chamber. The second baffle is located between the second baffle and the first filter 4. The first screen 131 is fixedly installed between the first baffle and the inner top wall of the first filter chamber. A second screen 132 is fixedly installed between the baffle and the inner bottom wall of the second filter chamber 8, and activated carbon 133 is filled in the space formed by the first baffle, the first screen 131, the second baffle and the second screen 132. In the internal space, the lower part of the liquid storage chamber 14 is connected with a slag discharge pipe 21. In this way, the supernatant liquid in the liquid storage chamber 14 enters the first screen 131 and is treated with activated carbon 133 and then discharged into the liquid discharge chamber 15, and then flows through the drainage pipe. 16 is discharged, and the lower suspension liquid in the liquid storage chamber 14 is discharged through the slag discharge pipe 21 for reprocessing.

An optional implementation of this embodiment is as follows: the sewage treatment device 3 includes a treatment tank 31 and a filter device 32 installed in the treatment tank 31. The internal space of the treatment tank 31 is divided into a slag accumulation area and a return flow through the filter device 32. area, the slag accumulation area is located above the return flow area, the slag accumulation area is connected with the collection box 2, and the return flow area is connected with a return pipe 17. In this way, the sewage with impurities is screened out again through the filtering device 32 to remove large particles of impurities. The clean sewage enters the return pipe 17 and flows back to the primary filter chamber for further treatment or discharge.

Optionally, the filtering device 32 includes a filtering tank with a number of pores, the side wall of the processing tank 31 is provided with an opening that matches the filtering tank, and the two facing inner walls of the processing tank 31 are each provided with a guide rail. 19. The filter tank is inserted into the treatment tank 31 through the through port, and both sides of the filter tank are slidably overlapped on the two guide rails 19. After the installation is completed, one side wall of the filter tank blocks the through port, and the filter tank can be screened out. Small debris in the sewage can be slid out of the filter tank through the guide rail 19 for disposal after the debris in the filter tank accumulates.

More preferably, the side wall of the filter tank is provided with a handle 20 for moving the filter tank, so that the movement of the filter tank is more convenient and the structure is more reasonable.

The above descriptions are only examples of the present application and are not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included in the protection scope of this application.

Claims (6)

1. A filtration system for water pollution treatment that can automatically clean the filter screen, which is characterized by including: A treatment box, the treatment box is connected with a collection box, and the collection box is connected with the sewage treatment device; The first filter screen is fixedly installed inside the treatment box. The internal space of the treatment box is divided into a primary filter chamber and a first filter chamber through the first filter screen. The primary filter chamber and the first filter chamber The chambers are respectively connected with water inlet pipes and drainage pipes, and the collection box is connected with the primary filter chamber; The second filter screen is slidably installed between the primary filter chamber and the treatment box. The second filter screen is in contact with the first filter screen. A first driving device is installed on the outer wall of the treatment box. , the power output end of the first driving device is connected to the second filter screen to drive the second filter screen to translate back and forth between the primary filter chamber and the collection box; The scraper assembly is rotatably installed at the mouth of the collection box. A second driving device is installed on the outer wall of the treatment box. The power output end of the second driving device is connected to the scraper assembly to drive The scraper assembly rotates; The scraper assembly includes a connecting rod and a scraper adapted to the second filter screen. The connecting rod is rotatably inserted into the top and bottom walls of the treatment box. The second driving device is an electric motor. The rotating shaft of the motor is connected to the connecting rod, and the scraper is fixed to the connecting rod. When cleaning the filter screen, one end of the scraper away from the connecting rod is pressed against the second filter screen; The number of the collection boxes is two, and the two collection boxes are arranged on both sides of the treatment box. A scraper assembly is installed at the mouth of each collection box, and each scraper assembly is installed at the mouth of the collection box. The plate assembly is connected to one of the motors, and the primary filter chamber is divided by two scraper assemblies into a second filter chamber located in the treatment box and a third filter chamber located in the collection box; The first driving device includes a servo motor and a gear installed on the rotating shaft of the servo motor. A rack is provided on the top wall of the second filter screen, and a through hole is provided on the top wall of the second filter chamber. , the gear is rotatably provided in the through hole and meshes with the rack; A first straight slide is provided on the inner bottom wall of the treatment box, and a second straight slide is provided on the inner bottom wall of the collection box. The second straight slide is docked with the first straight slide. A chute is formed, and the bottom end of the second filter screen is slidably inserted into the chute. 2. A filtration system for water pollution treatment that can automatically clean the filter screen according to claim 1, characterized in that a water purification device is provided in the first filter chamber, and the internal space of the first filter chamber passes through The purification device is divided into a liquid storage chamber and a liquid drainage chamber. The liquid storage chamber is located between the purification device and the first filter screen. The drainage pipe is connected to the liquid drainage chamber. 3. A filtration system for water pollution treatment that can automatically clean the filter according to claim 2, characterized in that the purification device includes a first screen, a second screen and activated carbon, and the first filter A first baffle is provided on the inner bottom wall of the chamber, a second baffle is provided on the inner top wall of the first filter chamber, and the first baffle is located between the second baffle and the first Between the filters, a first screen is fixedly installed between the first baffle and the inner top wall of the first filter chamber, and between the second baffle and the inner bottom wall of the first filter chamber. A second screen is fixedly installed in between, and the activated carbon is filled in the internal space formed by the first baffle, the first screen, the second baffle and the second screen. The storage The lower part of the liquid chamber is connected with a slag discharge pipe. 4. A filtration system for water pollution treatment that can automatically clean the filter screen according to claim 1, characterized in that the dirt treatment device includes a treatment tank and a filter device installed in the treatment tank, so The internal space of the treatment tank is divided into a slag accumulation area and a reflux area through the filter device. The slag accumulation area is located above the reflux area. The slag accumulation area is connected with the collection box. The reflux area Connected with a return pipe. 5. A filtration system for water pollution treatment that can automatically clean the filter screen according to claim 4, characterized in that: the filter device includes a filter tank with a plurality of pores, and the side wall of the treatment tank A through port is provided that matches the filter tank, and a guide rail is provided on both inner walls of the treatment tank. The filter tank is inserted into the treatment tank through the through port, and the filter tank is inserted into the treatment tank through the through port. Both sides of the slot are slidably overlapped on the two guide rails. 6. A filtration system for water pollution treatment that can automatically clean the filter screen according to claim 5, characterized in that: a handle for moving the filter tank is provided on the side wall of the filter tank.