阅读说明：本技术 一种城市污水用具有干湿分离机构的污水净化处理装置 (Sewage purification treatment device with dry-wet separation mechanism for urban sewage ) 是由 夏管军 孙莺 于 2021-09-01 设计创作，主要内容包括：本发明适用于污水净化设备技术领域,尤其涉及一种城市污水用具有干湿分离机构的污水净化处理装置,包括污水处理室和污水进口,所述城市污水用具有干湿分离机构的污水净化处理装置还包括：固体杂质分离结构。本发明通过设置固体杂质分离结构,可以在将污水排入污水处理室内之前,通过以污水自身的重力势能为动力输入来带动污水中的固体杂质移动,以便于将污水固液分离。(The invention is suitable for the technical field of sewage purification equipment, and particularly relates to a sewage purification treatment device with a dry-wet separation mechanism for urban sewage, which comprises a sewage treatment chamber and a sewage inlet, and the sewage purification treatment device with the dry-wet separation mechanism for the urban sewage further comprises: solid impurity separation structure. By arranging the solid impurity separation structure, the invention can drive the solid impurities in the sewage to move by taking the gravitational potential energy of the sewage as power input before the sewage is discharged into the sewage treatment chamber, so as to facilitate the solid-liquid separation of the sewage.)

1. The utility model provides an urban sewage still includes with sewage purification unit who has wet separating mechanism futilely that urban sewage has, including sewage treatment room and sewage import, its characterized in that, urban sewage is with sewage purification unit who has wet separating mechanism futilely:

the solid impurity separation structure is connected to the surface of the sewage treatment chamber and is used for driving solid impurities in the sewage to move by taking the gravitational potential energy of the sewage as power input before the sewage is discharged into the sewage treatment chamber so as to separate solid from liquid in the sewage; and

the cleaning structure is arranged on the sewage treatment chamber and the solid impurity separation structure, is in contact with the inner wall of the sewage treatment chamber, and is used for cleaning dirt on the inner wall of the sewage treatment chamber by taking the solid impurity separation structure as power input and matching with mechanical transmission.

2. The sewage purification treatment apparatus for municipal sewage having a dry-wet separation mechanism according to claim 1, wherein the solid-impurity separation structure comprises:

the solid-liquid separation chamber is connected to the sewage treatment chamber, communicated with the sewage inlet and used for storing sewage to be subjected to solid-liquid separation;

the control piece is arranged on the surface of the sewage inlet and used for controlling the discharge of sewage;

the impurity collecting assembly is arranged inside the solid-liquid separation chamber and is used for filtering sewage and driving solid impurities to move;

the pushing assembly is arranged on the solid-liquid separation chamber and is used for driving the impurity collecting assembly to move by taking the gravitational potential energy of the sewage discharged into the solid-liquid separation chamber as power input; and

and the liquid drainage component is arranged on the pushing component and used for draining sewage filtered by the impurity collecting component in the solid-liquid separation chamber.

3. The sewage purification treatment device for municipal sewage having a dry-wet separation mechanism according to claim 2, wherein the impurity collecting means comprises:

the first filter piece is connected to the surface of the pushing assembly in a sliding mode, the second filter piece is arranged inside the first filter piece, and the first filter piece and the second filter piece are both used for filtering solid impurities in sewage; and

the first elastic piece is installed between the second filter piece and the first filter piece and is used for driving the first filter piece to move.

4. The sewage purification treatment device for municipal sewage having a wet-dry separation mechanism according to claim 2, wherein said pushing assembly comprises:

the second pushing piece is connected to the surface of the impurity collecting assembly and used for driving the impurity collecting assembly to move;

the second liquid passing part is arranged on the side surface of the solid-liquid separation chamber and is used for installing a second pushing part;

the flow piece is contacted with the second pushing piece and is used for driving the second pushing piece to move;

the storage part is connected to the solid-liquid separation chamber and used for storing the flowing part;

the first pushing piece is arranged on the storage piece and used for pushing the flowing piece in the storage piece;

the lifting piece is arranged inside the solid-liquid separation chamber and is used for driving the first pushing piece to move; and

and the second elastic piece is arranged on the surfaces of the first pushing piece and the first liquid passing piece and is used for driving the first pushing piece to move.

5. The sewage purification treatment device for municipal sewage with a dry-wet separation mechanism according to claim 2, wherein the drainage assembly comprises:

the first liquid discharging part is arranged on the pushing assembly, a third filtering piece for filtering sewage is arranged on the inner side of the first liquid discharging part, and a first through hole is formed in the surface of the first liquid discharging part;

the second liquid discharging part is connected with the surface of the first liquid discharging part, a second through hole is formed in the surface of the second liquid discharging part, and the first liquid discharging part is used for discharging sewage in the solid-liquid separation chamber into the sewage treatment chamber through the first through hole and the second through hole; and

and the telescopic piece is arranged on the surface of the solid-liquid separation chamber and used for limiting the position between the first liquid discharging piece and the second liquid discharging piece.

6. The sewage purification treatment device for municipal sewage with a dry-wet separation mechanism according to claim 1, wherein the cleaning structure comprises:

the cleaning piece is contacted with the inner wall of the sewage treatment chamber and is used for cleaning dirt on the inner wall of the sewage treatment chamber; and

and the transmission assembly is arranged on the sewage treatment chamber and the solid impurity separation structure and is used for driving the cleaning piece to move by taking the solid impurity separation structure as power input.

7. The sewage purification treatment device for municipal sewage with a dry-wet separation mechanism according to claim 6, wherein the transmission assembly comprises:

the first linkage piece is rotatably connected inside the sewage treatment chamber and is used for driving the cleaning piece to move;

the second linkage piece is rotatably connected to the surface of the solid impurity separation structure and used for driving the first linkage piece to move;

the second transmission piece is arranged on the surface of the second linkage piece and used for driving the second linkage piece to rotate; and

and the first transmission piece is arranged on the outer side of the solid impurity separation structure and used for driving the second transmission piece to move by taking the solid impurity separation structure as power input.

Technical Field

The invention relates to the technical field of sewage purification equipment, in particular to a sewage purification treatment device with a dry-wet separation mechanism for urban sewage.

Background

Sewage treatment is a process of purifying sewage to meet the requirement of discharging the sewage into a certain water body or reusing the sewage, and is widely applied to various fields of buildings, agriculture, traffic, energy, petrifaction, environmental protection, urban landscape, medical treatment, catering and the like.

The existing partial sewage purification treatment device generally purifies sewage in a precipitation mode when working, and a sewage treatment tank is needed at the moment.

When sewage is injected into a sewage treatment tank for treatment, the sewage cannot be conveniently subjected to solid-liquid separation treatment, so that a large amount of solid impurities in the sewage are separated and collected.

Disclosure of Invention

The embodiment of the invention aims to provide a sewage purification treatment device with a dry-wet separation mechanism for urban sewage, and aims to solve the following problems: when sewage is injected into a sewage treatment tank for treatment, the sewage cannot be conveniently subjected to solid-liquid separation treatment, so that a large amount of solid impurities in the sewage are separated for treatment and collection.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides an urban sewage still includes with sewage purification unit who has wet-dry separating mechanism, including sewage treatment room and sewage import, urban sewage:

the solid impurity separation structure is connected to the surface of the sewage treatment chamber and is used for driving solid impurities in the sewage to move by taking the gravitational potential energy of the sewage as power input before the sewage is discharged into the sewage treatment chamber so as to separate solid from liquid in the sewage; and

the cleaning structure is arranged on the sewage treatment chamber and the solid impurity separation structure, is in contact with the inner wall of the sewage treatment chamber, and is used for cleaning dirt on the inner wall of the sewage treatment chamber by taking the solid impurity separation structure as power input and matching with mechanical transmission.

Further, the solid impurity separating structure includes:

the solid-liquid separation chamber is connected to the sewage treatment chamber, communicated with the sewage inlet and used for storing sewage to be subjected to solid-liquid separation;

the control piece is arranged on the surface of the sewage inlet and used for controlling the discharge of sewage;

the impurity collecting assembly is arranged inside the solid-liquid separation chamber and is used for filtering sewage and driving solid impurities to move;

the pushing assembly is arranged on the solid-liquid separation chamber and is used for driving the impurity collecting assembly to move by taking the gravitational potential energy of the sewage discharged into the solid-liquid separation chamber as power input; and

and the liquid drainage component is arranged on the pushing component and used for draining sewage filtered by the impurity collecting component in the solid-liquid separation chamber.

Further, the impurity collecting unit includes:

the first filter piece is connected to the surface of the pushing assembly in a sliding mode, the second filter piece is arranged inside the first filter piece, and the first filter piece and the second filter piece are both used for filtering solid impurities in sewage; and

the first elastic piece is installed between the second filter piece and the first filter piece and is used for driving the first filter piece to move.

Further, the pushing assembly comprises:

the second pushing piece is connected to the surface of the impurity collecting assembly and used for driving the impurity collecting assembly to move;

the second liquid passing part is arranged on the side surface of the solid-liquid separation chamber and is used for installing a second pushing part;

the flow piece is contacted with the second pushing piece and is used for driving the second pushing piece to move;

the storage part is connected to the solid-liquid separation chamber and used for storing the flowing part;

the first pushing piece is arranged on the storage piece and used for pushing the flowing piece in the storage piece;

the lifting piece is arranged inside the solid-liquid separation chamber and is used for driving the first pushing piece to move; and

and the second elastic piece is arranged on the surfaces of the first pushing piece and the first liquid passing piece and is used for driving the first pushing piece to move.

Further, the drain assembly includes:

the first liquid discharging part is arranged on the pushing assembly, a third filtering piece for filtering sewage is arranged on the inner side of the first liquid discharging part, and a first through hole is formed in the surface of the first liquid discharging part;

the second liquid discharging part is connected with the surface of the first liquid discharging part, a second through hole is formed in the surface of the second liquid discharging part, and the first liquid discharging part is used for discharging sewage in the solid-liquid separation chamber into the sewage treatment chamber through the first through hole and the second through hole; and

and the telescopic piece is arranged on the surface of the solid-liquid separation chamber and used for limiting the position between the first liquid discharging piece and the second liquid discharging piece.

Further, the cleaning structure comprises:

the cleaning piece is contacted with the inner wall of the sewage treatment chamber and is used for cleaning dirt on the inner wall of the sewage treatment chamber; and

and the transmission assembly is arranged on the sewage treatment chamber and the solid impurity separation structure and is used for driving the cleaning piece to move by taking the solid impurity separation structure as power input.

Further, the transmission assembly includes:

the first linkage piece is rotatably connected inside the sewage treatment chamber and is used for driving the cleaning piece to move;

the second linkage piece is rotatably connected to the surface of the solid impurity separation structure and used for driving the first linkage piece to move;

the second transmission piece is arranged on the surface of the second linkage piece and used for driving the second linkage piece to rotate; and

and the first transmission piece is arranged on the outer side of the solid impurity separation structure and used for driving the second transmission piece to move by taking the solid impurity separation structure as power input.

According to the sewage purification treatment device with the dry-wet separation mechanism for the urban sewage, provided by the invention, the solid impurity separation structure is arranged, so that the solid impurities in the sewage can be driven to move by taking the gravitational potential energy of the sewage as power input before the sewage is discharged into the sewage treatment chamber, and the solid-liquid separation of the sewage is facilitated.

Drawings

FIG. 1 is a schematic structural view of a sewage purification treatment apparatus for municipal sewage having a dry-wet separation mechanism.

FIG. 2 is a partial structural view showing a solid-impurity separation structure in a sewage purification apparatus for municipal sewage having a dry-wet separation mechanism.

FIG. 3 is a partial schematic view showing the structure of an impurity collecting module in a sewage purifying treatment apparatus for municipal sewage having a dry-wet separation mechanism.

FIG. 4 is a partial structural diagram of a second filter element, a second pushing element and a first filter element in a sewage purification treatment device for municipal sewage with a dry-wet separation mechanism.

FIG. 5 is a partial schematic view showing the structure of a liquid discharge assembly in a sewage purification apparatus for municipal sewage having a dry-wet separation mechanism.

In the figure: 1. a sewage treatment chamber; 2. a solid impurity separation structure; 21. a control member; 22. a solid-liquid separation chamber; 23. a drainage assembly; 231. a third filter member; 232. a first drain member; 233. a second drainage member; 234. a first through hole; 235. a second through hole; 236. a telescoping member; 24. an impurity collection assembly; 241. a first filter member; 242. a second filter member; 243. a first elastic member; 25. a pushing assembly; 251. a lifting member; 252. a second elastic member; 253. a first pusher member; 254. a first liquid passing member; 255. a second pusher member; 256. a flow member; 257. a second liquid passage member; 3. cleaning the structure; 31. cleaning the workpiece; 32. a transmission assembly; 321. a first transmission member; 322. a second transmission member; 323. a first rotating member; 324. a third transmission member; 325. a fourth transmission member; 326. a second rotating member; 4. and (6) a sewage inlet.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Specific implementations of the present invention are described in detail below with reference to specific embodiments.

As shown in fig. 1 to 5, an embodiment of the present invention provides a sewage purification treatment apparatus for municipal sewage with a wet-dry separation mechanism, including a sewage treatment chamber 1 and a sewage inlet 4, and further including:

the solid impurity separation structure 2 is connected to the surface of the sewage treatment chamber 1 and is used for driving solid impurities in the sewage to move by taking the gravitational potential energy of the sewage as power input before the sewage is discharged into the sewage treatment chamber 1 so as to facilitate solid-liquid separation of the sewage; and

clearance structure 3, set up on sewage treatment room 1 and solid impurity separation structure 2, and contact with the inner wall of sewage treatment room 1 for use solid impurity separation structure 2 to be power input and cooperate the dirt of mechanical transmission clearance sewage treatment room 1 inner wall.

In an embodiment of the present invention, the solid-impurity separating structure 2 can drive the filtering object to move by taking gravitational potential energy of the sewage injected into the sewage treatment chamber 1 as power input and matching with mechanical transmission, or can drive the filtering object to move in the sewage by using motor drive and matching with mechanical transmission, both of which are used for driving the filtering object to move the solid impurities in the sewage so as to collect the solid impurities, and the cleaning structure 3 can drive the cleaning object to move on the inner wall of the sewage treatment chamber 1 to clean the dirt by taking the solid-impurity separating structure 2 as power input and matching with mechanical transmission when the solid-impurity separating structure 2 moves, or can directly drive the cleaning object to move by using the motor to clean the dirt on the inner wall of the sewage treatment chamber 1.

As shown in fig. 1 to 5, in one embodiment of the present invention, the solid impurity separation structure 2 includes:

the solid-liquid separation chamber 22 is connected to the sewage treatment chamber 1, is communicated with the sewage inlet 4 and is used for storing sewage to be subjected to solid-liquid separation;

a control member 21 installed on a surface of the sewage inlet 4 for controlling discharge of the sewage;

the impurity collecting assembly 24 is arranged inside the solid-liquid separation chamber 22 and is used for filtering sewage and driving solid impurities to move;

the pushing assembly 25 is arranged on the solid-liquid separation chamber 22 and is used for driving the impurity collecting assembly 24 to move by taking the gravitational potential energy of the sewage discharged into the solid-liquid separation chamber 22 as power input; and

and the liquid discharge assembly 23 is arranged on the pushing assembly 25 and is used for discharging the sewage filtered by the impurity collecting assembly 24 in the solid-liquid separation chamber 22.

In this embodiment, the solid-liquid separation chamber 22 may be a liquid storage tank or a storage barrel, and a slag discharge port is disposed on a side surface of the solid-liquid separation chamber 22, the control member 21 may be an electric valve or a manual valve, the impurity collecting assembly 24 may be a telescopic filtering member for filtering sewage in the solid-liquid separation chamber 22, which is used to filter impurities in sewage at different depths in the solid-liquid separation chamber 22, the impurity collecting assembly 24 may drive the extruding member to move by using the weight of the sewage and extrude the flowing substance in the closed space, so that the flowing substance can drive the impurity collecting assembly 24 to move in the solid-liquid separation chamber 22 to filter impurities in the sewage, or directly use the electric telescopic member or the pneumatic telescopic member to push the impurity collecting assembly 24 to move in the solid-liquid separation chamber 22, the liquid discharge assembly 23 may be in the process of pushing the assembly 25 and the impurity collecting assembly 24 to move to filter impurities, the sewage filtered in the solid-liquid separation chamber 22 is discharged into the sewage treatment chamber 1.

In the present embodiment, the impurity collecting unit 24 includes:

the first filter piece 241 and the second filter piece 242 are slidably connected to the surface of the pushing assembly 25, the second filter piece 242 is arranged inside the first filter piece 241, and both the first filter piece 241 and the second filter piece 242 are used for filtering solid impurities in the sewage; and

and a first elastic member 243 installed between the second filter member 242 and the first filter member 241 for driving the first filter member 241 to move.

In this embodiment, the pushing assembly 25 includes:

a second pushing member 255 connected to the surface of the impurity collecting unit 24 for moving the impurity collecting unit 24;

a second liquid passing member 257 installed on the side surface of the solid-liquid separation chamber 22, for installing a second pushing member 255;

the flow piece 256 is in contact with the second pushing piece 255 and is used for driving the second pushing piece 255 to move;

a storage member connected to the solid-liquid separation chamber 22 for storing the flow member 256;

a first pushing member 253 provided on the reservoir for pushing the flow member 256 in the reservoir;

the lifting piece 251 is arranged in the solid-liquid separation chamber 22 and used for driving the first pushing piece 253 to move; and

and the second elastic piece 252 is arranged on the surfaces of the first pushing piece 253 and the first liquid passing piece 254 and is used for driving the first pushing piece 253 to move.

In this embodiment, the first filter 241 may be a filter plate or a filter block, a cavity is opened inside the first filter 241, the second filter 242 may be a filter plate or a filter block, the second filter 242 is disposed inside the cavity, and the first elastic member 243 may be a spring or an elastic column;

the second pushing member 255 may be composed of a piston block and a connecting rod, the flowing member 256 may be hydraulic oil, the storage member may be composed of a second liquid passing member 257 and a first liquid passing member 254, the second liquid passing member 257 may be a communicating tube or a communicating pipe, the second pushing member 255 is disposed inside the second liquid passing member 257, the first liquid passing member 254 may be a liquid storage box or a liquid storage box, the first pushing member 253 is disposed inside the first liquid passing member 254, the first pushing member 253 may be composed of a piston plate and a connecting rod, a protruding block is disposed on a surface of the first pushing member 253, the lifting member 251 may be a piston plate or a piston block, the second elastic member 252 may be a spring or an elastic column, and the second elastic member 252 is connected with the protruding block and the first liquid passing member 254;

when the sewage inlet 4 discharges the sewage into the solid-liquid separation chamber 22, the sewage falls on the lifting member 251, the lifting member 251 bears the load and moves downwards, and drives the first pushing member 253 to move downwards, and at the same time, the second elastic member 252 is compressed, the first pushing member 253 pushes the first liquid passing member 254 and the flow member 256 in the second liquid passing member 257 downwards, so that the flow member 256 flows inside the second liquid passing member 257 and drives the second pushing member 255 to move, so that the second pushing member 255 drives the first filtering member 241 to slide on the surface of the lifting member 251, so that the first and second filter members 241 and 242 move to filter the foreign substances in the contaminated water, and in the process of descending the lifting member 251, the lifting member 251 drives the first filtering member 241 to move downwards, the first elastic member 243 drives the second filtering member 242 to move upwards due to its elasticity, so that the second filtering member 242 and the first filtering member 241 can be matched to fully filter the sewage between the lifting member 251 and the solid-liquid separation chamber 22.

In this embodiment, the drain assembly 23 includes:

the first liquid discharging part 232 is installed on the pushing assembly 25, a third filtering piece 231 for filtering sewage is arranged on the inner side of the first liquid discharging part 232, and a first through hole 234 is formed in the surface of the first liquid discharging part 232;

the second liquid discharging part 233 is connected with the surface of the first liquid discharging part 232, the surface of the second liquid discharging part is provided with a second through hole 235, and the first liquid discharging part 232 is used for discharging the sewage in the solid-liquid separation chamber 22 into the sewage treatment chamber 1 through the first through hole 234 and the second through hole 235; and

and an expansion member 236 installed on the surface of the solid-liquid separation chamber 22 for defining the position between the first drain member 232 and the second drain member 233.

In this embodiment, the first drainage member 232 may be a communication pipe or a communication cylinder, the first drainage member 232 penetrates through the lifting member 251, the third filter member 231 may be a filter screen or a filter plate, the second drainage member 233 may be a communication pipe or a communication cylinder, the telescopic member 236 may be an electric telescopic rod or a pneumatic telescopic rod, when the lifting member 251 moves down, the lifting member 251 drives the first drainage member 232 to move down, after impurities in the sewage between the lifting member 251 and the solid-liquid separation chamber 22 are filtered, the position of the first through hole 234 formed in the first drainage member 232 corresponds to the position of the second through hole 235 formed in the second drainage member 233, and then the telescopic member 236 is opened, so that the telescopic member 236 extends into the second through hole 235 and the first through hole 234 to limit the positions of the second drainage member 233 and the first drainage member 232, so that the sewage flows into the first drainage member 232 and flows into the sewage treatment chamber 1 through the first through hole 234 and the second through hole 235, after the sewage in the solid-liquid separation chamber 22 is discharged, the expansion member 236 is returned to the original position, and at this time, the first liquid discharge member 232 is not restrained by the external force, so the first liquid discharge member 232 and the lifting member 251 are returned to the original position under the elastic action of the second elastic member 252, so that the whole impurity filtering system is returned to the original state.

As shown in fig. 1, in one embodiment of the present invention, the cleaning structure 3 includes:

a cleaning member 31 contacting the inner wall of the sewage treatment chamber 1 for cleaning dirt on the inner wall of the sewage treatment chamber 1; and

and the transmission assembly 32 is arranged on the sewage treatment chamber 1 and the solid impurity separation structure 2 and is used for driving the cleaning piece 31 to move by taking the solid impurity separation structure 2 as power input.

In this embodiment, clearance piece 31 can be for scraping dirty board or scraping dirty piece, and drive assembly 32 can drive clearance piece 31 motion through using solid impurity separation structure 2 to drive clearance piece 31 for power input and cooperation gear drive, or uses solid impurity separation structure 2 to drive clearance piece 31 motion for power input and cooperation worm gear drive, and its effect is that the dirt on the efficient is cleared up sewage treatment room 1 inner wall.

In the present embodiment, the transmission assembly 32 includes:

the first linkage piece is rotatably connected inside the sewage treatment chamber 1 and is used for driving the cleaning piece 31 to move;

the second linkage piece is rotatably connected to the surface of the solid impurity separation structure 2 and used for driving the first linkage piece to move;

the second transmission piece 322 is installed on the surface of the second linkage piece and is used for driving the second linkage piece to rotate; and

the first transmission member 321 is disposed outside the solid-impurity separation structure 2, and is configured to drive the second transmission member 322 to move by taking the solid-impurity separation structure 2 as a power input.

In this embodiment, the first linkage member may be composed of a second rotating member 326 and a third rotating member 324, the second rotating member 326 may be a rotating rod or a rotating column, the third rotating member 324 may be a bevel gear or a bevel ring, the second linkage member may be composed of a fourth transmitting member 325 and a first rotating member 323, the fourth transmitting member 325 may be a bevel gear or a bevel ring gear, the first rotating member 323 may be a rotating column or a rotating rod, the second transmitting member 322 may be a transmission gear or a transmission ring gear, the first transmitting member 321 may be a transmission rack or a toothed plate, during the downward movement of the lifting member 251, the lifting member 251 carries the first transmitting member 321 to drive the second transmitting member 322 and the first rotating member 323 to rotate, the first rotating member 323 drives the third transmitting member 324 and the second rotating member 326 to rotate through the fourth transmitting member 325, so that the second rotating member 326 drives the cleaning member 31 to move on the inner wall of the sewage treatment chamber 1, thereby cleaning the dirt on the inner wall of the sewage treatment chamber 1.

The working mode of the invention is as follows: when the sewage inlet 4 discharges the sewage into the solid-liquid separation chamber 22, the sewage falls on the lifting member 251, the lifting member 251 bears the weight and moves downwards, and drives the first pushing member 253 to move downwards, and at this time, the second elastic member 252 is compressed, the first pushing member 253 pushes the first liquid passing member 254 and the flowing member 256 in the second liquid passing member 257 downwards, so that the flowing member 256 flows in the second liquid passing member 257 and drives the second pushing member 255 to move, so that the second pushing member 255 drives the first filtering member 241 to slide on the surface of the lifting member 251, so that the first filtering member 241 and the second filtering member 242 move to filter impurities in the sewage, and in the descending process of the lifting member 251, the lifting member 251 drives the first filtering member 241 to move downwards, and the first elastic member 243 drives the second filtering member 242 to move upwards due to its elasticity, so that the second filtering member 242 and the first filtering member 241 can cooperate to fully filter the sewage between the lifting member 251 and the solid-liquid separation chamber 22, when the lifting member 251 moves downwards, the lifting member 251 drives the first drainage member 232 to move downwards, impurities in the sewage between the lifting member 251 and the solid-liquid separation chamber 22 are filtered, the first through hole 234 of the first liquid discharge member 232 is formed at a position corresponding to the second through hole 235 of the second liquid discharge member 233, the telescoping member 236 is then opened such that the telescoping member 236 extends into the second through-hole 235 and the first through-hole 234, to define the position of the second drain 233 and the first drain 232, so that the sewage flows into the first drain member 232 and flows into the sewage treatment chamber 1 through the first through hole 234 and the second through hole 235, after the sewage in the solid-liquid separation chamber 22 is discharged, the expansion piece 236 is returned to the original position, at this time, the first liquid discharge piece 232 is not restrained by the external force, the first drain 232 and the elevating member 251 are restored to their original positions by the elastic force of the second elastic member 252, so that the entire impurity filtering system is restored to its original state;

in the process that the lifting member 251 moves downwards, the lifting member 251 drives the first transmission member 321 to drive the second transmission member 322 and the first rotating member 323 to rotate, and the first rotating member 323 drives the third transmission member 324 and the second rotating member 326 to rotate through the fourth transmission member 325, so that the second rotating member 326 drives the cleaning member 31 to move on the inner wall of the sewage treatment chamber 1, and further, dirt on the inner wall of the sewage treatment chamber 1 is cleaned.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.