CN221831792U - A solid-liquid separation device for domestic sewage treatment - Google Patents

Abstract

The utility model provides a solid-liquid separation device for domestic sewage treatment, which relates to the technical field of sewage treatment and comprises the following components: the device comprises a box body, wherein two smashing devices are arranged in an inner cavity of a blanking shell, a moving device is arranged in an inner cavity of a device shell, a filter plate is arranged in the inner cavity of the box body, a cleaning device is arranged in the inner cavity of the box body, and a collecting tank is movably arranged in the waste box. According to the utility model, two motors are started through the control terminal, solid objects in sewage are crushed, the sewage can be filtered through the plurality of filtering holes, the filtered sewage is filtered through the filter plate for the second time, the first positive motor and the second positive motor are started through the control terminal, at the moment, the scraping plate scrapes the crushed solid objects accumulated on the surface of the sloping plate in the moving process and scrapes the crushed solid objects into the collecting tank for collection, the second positive motor and the second positive motor are started through the control terminal, and the second threaded rod can enable the plurality of cleaning brushes to be attached to the surface of the filter plate for cleaning in the rotating process.

Description

A solid-liquid separation device for domestic sewage treatment

Technical Field

The utility model relates to the technical field of sewage treatment, in particular to a solid-liquid separation device for domestic sewage treatment.

Background Art

Domestic sewage is wastewater discharged from residents' daily lives, mainly from residential buildings and public buildings, such as residences, government offices, schools, hospitals, shops, public places and toilets of industrial enterprises. The pollutants contained in domestic sewage are mainly organic matter (such as protein, carbohydrates, fat, urea, ammonia nitrogen, etc.) and a large number of pathogenic microorganisms (such as parasite eggs and enteric infectious viruses, etc.). The organic matter in domestic sewage is extremely unstable and easily decomposes to produce a foul odor. Bacteria and pathogens multiply in large numbers with organic matter in domestic sewage as nutrition, which can lead to the spread of infectious diseases. Therefore, domestic sewage must be treated before discharge.

In the prior art, for example, Chinese patent number: CN217015496U discloses a separation device for treating domestic sewage, comprising a separation chamber, an equipment storage chamber, a solid-liquid separation extrusion device and a filtering extrusion device, wherein the equipment storage chamber is horizontally arranged, the separation chamber is arranged on the equipment storage chamber, the solid-liquid separation extrusion device is arranged on the separation chamber, the filtering extrusion device is arranged inside the separation chamber and is located below the solid-liquid separation extrusion device, the solid-liquid separation extrusion device comprises a driving component and an adjusting component, the driving component is arranged on the outer wall of the separation chamber, the adjusting component is arranged on the driving component and is located inside the separation chamber, the device can separate the sewage and garbage put into the separation chamber into solid and liquid, and after the solid-liquid separation is completed, the solid is squeezed and the liquid is collected, thereby avoiding the presence of a large amount of liquid in the solid to ferment and produce odor and breed a large number of bacteria.

However, when the above patent is in use, the device only squeezes and filters the solid objects in the sewage, which easily causes small solid objects to flow out during the squeezing process, and cannot separate the solid objects in the sewage more thoroughly. When there are too many solid objects in the sewage, the filter holes are easily blocked, making it inconvenient to filter. Secondly, most of the existing sewage solid-liquid separation devices are not equipped with cleaning devices. Long-term use of the filter plate can easily cause impurities in the sewage to block the surface of the filter screen, thereby affecting the use effect of the entire sewage separation device.

Utility Model Content

The purpose of the utility model is to solve the problems existing in the prior art.

In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a solid-liquid separation device for domestic sewage treatment, comprising: a box body, a device shell is installed on one side of the box body surface, a limiting groove is provided on one side of the inner wall of the device shell, a water outlet pipe is installed at the bottom end of one side of the box body, a control terminal is installed on the surface of the box body, a material discharge shell is installed on the top of the box body, a sealing cover is installed on the top of the material discharge shell, a water inlet is installed on the surface of the top of the sealing cover, the inner cavity of the material discharge shell is provided with two crushing devices, a waste box is installed on the surface of one side of the box body, and the waste A switch door is movably installed on the surface of the waste box, a handle is installed on one side of the switch door surface, T-shaped movable grooves are provided on both sides of the inner wall of the waste box, a water outlet is provided at the bottom end of one side of the inner wall of the waste box, a flow port is provided on one side of the inner wall of the waste box, a moving device is provided in the inner cavity of the device shell, an inclined plate is installed in the inner cavity of the box body, one side of the inclined plate is connected to the inside of the flow port, a plurality of filter holes are provided on the surface of the inclined plate, a filter plate is installed in the inner cavity of the box body, a cleaning device is provided in the inner cavity of the box body, and a collecting tank is movably installed inside the waste box.

As a preferred embodiment, the crushing device includes a motor, which is fixedly embedded in one side of the surface of the lower material shell, and a rotating rod is fixedly installed on the output end of the motor, one end of the rotating rod is connected to the inner wall of the lower material shell through a bearing, and a plurality of crushing knives are installed on the surface of the rotating rod.

As a preferred embodiment, the moving device includes a forward and reverse motor 1, which is fixedly embedded in the surface of one side of the device shell, and a threaded rod 1 is fixedly installed on the output end of the forward and reverse motor 1, one end of the threaded rod 1 is connected to one side of the inner wall of the device shell through a bearing, and a moving block is movably sleeved on the surface of the threaded rod 1, a limiting block is installed on one side of the moving block, and a scraper is installed on the other side of the moving block, and the limiting block moves inside the limiting groove.

As a preferred embodiment, the cleaning device includes two forward and reverse motors, which are fixedly mounted on the surface of a box body, and two threaded rods are fixedly mounted on the output end of the two forward and reverse motors, and one end of the two threaded rods is connected to the inner wall of the box body through a bearing, and a U-shaped connecting plate is movably sleeved on the surface of the two threaded rods, and connecting rods are installed on the inner sides of both ends of the U-shaped connecting plate, and multiple cleaning brushes are installed on the surface of the connecting rods, and a limit rod is movably embedded on the surface of the other end of the U-shaped connecting plate, and both ends of the limit rod are fixedly mounted on both sides of the inner wall of the box body.

As a preferred embodiment, a handle is installed on one side of the collecting trough, two pulley rods are installed on both sides of the outside of the collecting trough, one end of the four pulley rods are installed with pulleys through bearings, the four pulleys are evenly divided into two groups, the two groups of pulleys are movable inside two T-shaped movable grooves, and a plurality of filter ports are opened at the bottom end of the inner cavity of the collecting trough.

As a preferred implementation, it is characterized in that: the water outlet pipe, the water inlet, the water outlet, the flow port are interconnected with the interior of the box.

Compared with the prior art, the advantages and positive effects of the utility model are:

1. In the utility model, the motor, the first forward and reverse motor, and the second forward and reverse motor are electrically connected to the control terminal. When in use, the sewage pipe is connected to the water inlet, and the two motors are started through the control terminal. At this time, the sewage flows into the inside of the discharge shell, and the solid waste in the sewage can be crushed by multiple crushing knives on the surface of the two rotating rods. The crushed waste falls onto the surface of the inclined plate together with the sewage. The sewage can be filtered through multiple filter holes for larger particles, and the larger particles filtered on the inclined plate roll into the inside of the collection tank through the flow port. The filtered sewage can be filtered twice through the filter plate, which can make the solid-liquid separation more thorough. When the inside of the collection tank When enough solid objects in sewage are collected, the switch door can be opened by using the handle, and the collection tank can be pulled out by pulling the handle to process the waste solids inside the collection tank. The multiple filter ports at the bottom of the collection tank can filter the collected solid objects in sewage, so that the filtered sewage reaches the bottom of the inner cavity of the box through the outlet and merges with the filtered sewage, and is finally discharged through the outlet pipe. By setting a crushing device to crush the solid objects in the sewage, the solid objects in the sewage are not easily blocked in the filter holes when passing through the first filtration, and the solid objects in the sewage can be separated more thoroughly when the sewage passes through the filter plate, which is convenient for filtering.

2. The utility model starts the forward and reverse motor 1 through the control terminal, at which time the forward and reverse motor 1 can drive the threaded rod 1 to rotate forwardly. When the threaded rod 1 rotates, the moving block can drive the scraper to move, and the scraper fits with the surface of the inclined plate, so that the scraper can scrape the crushed solid objects accumulated on the surface of the inclined plate during the movement, and scrape the sewage solid objects into the collection tank for collection and treatment, so that the solid objects in the sewage can be prevented from accumulating on the inclined plate to cause blockage, thereby improving the separation effect of the solid objects. Long-term filtration will cause deposits on the surface of the filter plate. The forward and reverse motor 2 is started by the control terminal, and the forward and reverse motor 2 drives the threaded rod 2 to rotate forward and backward. During the rotation process, the threaded rod 2 can drive multiple cleaning brushes to fit on the surface of the filter plate for cleaning, so that the sewage impurities accumulated on the surface of the filter plate can be cleaned up, which can effectively prevent the filter plate from being blocked and affecting the filtration, and can improve the use effect of the entire solid-liquid separation device.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a front perspective structural diagram of a solid-liquid separation device for domestic sewage treatment provided by the utility model;

FIG2 is a rear perspective structural diagram of a solid-liquid separation device for domestic sewage treatment provided by the utility model;

FIG3 is a schematic diagram of a disassembled three-dimensional structure of a solid-liquid separation device for domestic sewage treatment provided by the present invention;

FIG4 is a schematic diagram of a disassembled three-dimensional structure of a solid-liquid separation device for domestic sewage treatment provided by the utility model;

FIG5 is a top view of a three-dimensional structure diagram of a solid-liquid separation device for domestic sewage treatment provided by the utility model;

FIG6 is a schematic diagram of a partially disassembled three-dimensional structure of a solid-liquid separation device for domestic sewage treatment provided by the utility model;

FIG7 is a schematic diagram of a partially disassembled three-dimensional structure of a solid-liquid separation device for domestic sewage treatment provided by the utility model;

FIG8 is a schematic diagram of a partially disassembled three-dimensional structure of a solid-liquid separation device for domestic sewage treatment provided by the utility model;

FIG9 is an enlarged view of point A of a solid-liquid separation device for domestic sewage treatment provided by the present invention;

FIG10 is an enlarged view of point B of a solid-liquid separation device for treating domestic sewage provided by the present invention.

Legend:

1. Box body; 101. Device shell; 102. Limiting groove; 103. Water outlet pipe; 104. Control terminal; 2. Material discharge shell; 201. Sealing cover; 202. Water inlet; 3. Crushing device; 301. Motor; 302. Rotating rod; 303. Crushing knife; 4. Waste box; 401. Opening and closing door; 402. Handle; 403. T-shaped movable groove; 404. Water outlet; 405. Flow port; 5. Moving device; 501. Front and back Motor 1; 502, threaded rod 1; 503, moving block; 504, limiting block; 505, scraper; 6, inclined plate; 601, filter hole; 7, filter plate; 8, cleaning device; 801, forward and reverse motor 2; 802, threaded rod 2; 803, U-shaped connecting plate; 804, connecting rod; 805, cleaning brush; 806, limiting rod; 9, collecting tank; 901, handle; 902, pulley rod; 903, pulley; 904, filter port.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Please refer to Figures 1-10. The utility model provides a technical solution: a solid-liquid separation device for domestic sewage treatment, comprising: a box body 1, a device shell 101 is installed on one side of the surface of the box body 1, a limiting groove 102 is provided on one side of the inner wall of the device shell 101, a water outlet pipe 103 is installed at the bottom end of one side of the box body 1, a control terminal 104 is installed on the surface of the box body 1, a material discharge shell 2 is installed on the top of the box body 1, a sealing cover 201 is installed on the top of the material discharge shell 2, a water inlet 202 is installed on the surface of the top of the sealing cover 201, the inner cavity of the material discharge shell 2 is provided with two crushing devices 3, a waste box 4 is installed on the surface of one side of the box body 1, and the waste box 4 A switch door 401 is movably installed on the surface, a handle 402 is installed on one side of the surface of the switch door 401, T-shaped movable grooves 403 are provided on both sides of the inner wall of the waste box 4, a water outlet 404 is provided at the bottom end of one side of the inner wall of the waste box 4, a flow port 405 is provided on one side of the inner wall of the waste box 4, a moving device 5 is provided in the inner cavity of the device shell 101, an inclined plate 6 is installed in the inner cavity of the box body 1, one side of the inclined plate 6 is connected to the inside of the flow port 405, a plurality of filtering holes 601 are provided on the surface of the inclined plate 6, a filter plate 7 is installed in the inner cavity of the box body 1, a cleaning device 8 is provided in the inner cavity of the box body 1, and a collecting tank 9 is movably installed inside the waste box 4.

Specifically: the control terminal 104 is electrically connected to each electrically controlled device. When the water inlet 202 is connected to the sewage treatment pipe, the sewage flows into the interior of the discharge shell 2 through the water inlet 202. The two crushing devices 3 in the inner cavity of the discharge shell 2 are used to crush the solid objects in the sewage, which is convenient for filtering to achieve solid-liquid separation. The sealing cover 201 is used to seal the top of the discharge shell 2 to prevent the sewage from emitting odor, and the inside of the discharge shell 2 can be cleaned by opening the sealing cover 201. The inside of the waste box 4 is used to collect the separated solid objects. The switch door 401 can be opened and closed by using the handle 402. When the sewage flows into the interior of the box body 1, it will be filtered for the first time through the multiple filter holes 601 on the surface of the inclined plate 6. The multiple filter holes 601 can filter larger solid objects. The solid objects after filtration are collected in the collecting tank 9 through the circulation port 405. When a certain amount of solid objects are accumulated on the surface of the inclined plate 6 and cannot fall into the collecting tank 9, the moving device 5 can be started by the control terminal 104 to make the moving device 5 scrape the solid objects on the surface of the inclined plate 6 to the inside of the collecting tank 9. When the sewage reaches the filter plate 7, a second filtration can be performed. The filter plate 7 will be clogged with sewage impurities on the surface after long-term use. The cleaning device 8 can be started by the control terminal 104 to make the cleaning device 8 move and clean the sewage impurities on the surface of the filter plate 7. The filtered sewage liquid can reach the bottom of the box body 1 and be finally discharged through the outlet pipe 103. The outlet 404 is interconnected with the inside of the box body 1, and the filtered water in the outlet 4 can flow into the inside of the box body 1.

In one embodiment, the crushing device 3 includes a motor 301, which is fixedly embedded in one side of the surface of the discharge shell 2. A rotating rod 302 is fixedly installed at the output end of the motor 301. One end of the rotating rod 302 is connected to the inner wall of the discharge shell 2 through a bearing. A plurality of crushing knives 303 are installed on the surface of the rotating rod 302.

Specifically: the two motors 301 are started through the control terminal 104. At this time, the two motors 301 can drive the two rotating rods 302 to rotate, and the two rotating rods 302 rotate inward at the same time. The solid objects in the sewage can reach the middle position of the two rotating rods 302, and are crushed by multiple crushing knives 303 during the rotation of the two rotating rods 302.

In one embodiment, the moving device 5 includes a forward and reverse motor 501, which is fixedly embedded in the surface of one side of the device housing 101. A threaded rod 502 is fixedly installed on the output end of the forward and reverse motor 501. One end of the threaded rod 502 is connected to one side of the inner wall of the device housing 101 through a bearing. A moving block 503 is movably sleeved on the surface of the threaded rod 502. A limit block 504 is installed on one side of the moving block 503. A scraper 505 is installed on the other side of the moving block 503. The limit block 504 moves inside the limit groove 102.

Specifically: when some solid objects that cannot roll down by themselves are accumulated on the surface of the inclined plate 6, the forward and reverse motor 501 is started through the control terminal 104, and the forward and reverse motor 501 can rotate forward and reversely. During the rotation, the threaded rod 502 drives the moving block 503 on the surface to move. During the movement of the moving block 503, the scraper 505 can scrape the solid objects accumulated on the surface of the inclined plate 6. One side of the scraper 505 is fitted with the surface of the inclined plate 6 so that it is scraped to the inside of the collecting tank 9 through the flow port 405. During the movement, the limit block 504 moves inside the limit groove 102 to play a limiting role.

In one embodiment, the cleaning device 8 includes a forward and reverse motor 801, which is fixedly mounted on the surface of the box body 1. A threaded rod 802 is fixedly mounted on the output end of the forward and reverse motor 801. One end of the threaded rod 802 is connected to the inner wall of the box body 1 through a bearing. A U-shaped connecting plate 803 is movably sleeved on the surface of the threaded rod 802. Connecting rods 804 are installed on the inner sides of both ends of the U-shaped connecting plate 803. A plurality of cleaning brushes 805 are installed on the surface of the connecting rod 804. A limiting rod 806 is movably embedded on the surface of the other end of the U-shaped connecting plate 803. Both ends of the limiting rod 806 are fixedly mounted on both sides of the inner wall of the box body 1.

Specifically: the forward and reverse motor 801 is started by the control terminal 104, and the threaded rod 802 connected to the forward and reverse motor 801 can rotate forward or reverse. At this time, the U-shaped connecting plate 803 can move during the rotation of the forward and reverse motor 801. The U-shaped connecting plate 803 supports the installation of the connecting rod 804. By setting the limit rod 806, the U-shaped connecting plate 803 can move left and right. The surface of multiple cleaning brushes 805 is in contact with the filter plate 7. During the movement, the U-shaped connecting plate 803 drives the multiple cleaning brushes 805 on the surface of the connecting rod 804 to clean the sewage impurities accumulated on the surface of the filter plate 7 to prevent the filter plate 7 from being blocked and inconvenient to filter the sewage.

In one embodiment, a handle 901 is installed on one side of the collecting tank 9, and two pulley rods 902 are installed on both sides of the outside of the collecting tank 9. One end of the four pulley rods 902 is installed with a pulley 903 through a bearing. The four pulleys 903 are evenly divided into two groups. Both groups of pulleys 903 are movable inside two T-shaped movable grooves 403. A plurality of filter ports 904 are opened at the bottom end of the inner cavity of the collecting tank 9.

Specifically: the filtered sewage solid objects enter the interior of the collection tank 9 through the circulation port 405, and the multiple filter ports 904 can filter the collected sewage solid objects. When in use, the handle 901 can facilitate the collection tank 9 to be pulled out and used. During the pulling and pulling process, the four pulley rods 902 can drive the four pulleys 903 to move inside the T-shaped movable groove 403, so as to facilitate the treatment of the sewage solid objects inside the collection tank 9.

In one embodiment, the water outlet pipe 103 , the water inlet 202 , the water outlet 404 , and the flow port 405 are interconnected with the interior of the box body 1 .

Specifically: when in use, the sewage pipe can be connected to the water inlet 202 to allow domestic sewage to enter the interior of the box 1, the flow port 405 connects the interior of the box 1 and the waste box 4, and the solid objects in the sewage collected in the collection tank 9 are filtered through the filter port 904, so that the sewage can pass through the water outlet 404 and finally be discharged through the outlet pipe 103.

Working principle: the motor 301, the forward and reverse motor 1 501, and the forward and reverse motor 2 801 are electrically connected to the control terminal 104. When in use, the sewage pipe is connected to the water inlet 202, and the two motors 301 are started through the control terminal 104. At this time, the sewage flows into the inside of the discharge shell 2, and the solid waste in the sewage can be crushed by the multiple crushing knives 303 on the surface of the two rotating rods 302. The crushed waste falls to the surface of the inclined plate 6 together with the sewage. The sewage can be filtered through the multiple filtering holes 601 for larger particles, and the larger particles filtered on the inclined plate 6 roll to the inside of the collection tank 9 through the flow port 405. The filtered sewage can be filtered twice through the filter plate 7, which can make the solid-liquid separation more thorough. When enough sewage solid objects are collected inside the collecting tank 9, the switch door 401 can be opened by using the handle 402, and the collection tank 9 can be pulled out by pulling the handle 901, so that the waste solids inside the collecting tank 9 can be processed. The multiple filter ports 904 at the bottom of the collecting tank 9 can filter the collected sewage solid objects, so that the filtered sewage reaches the bottom of the inner cavity of the box 1 through the outlet port 404 and merges with the filtered sewage, and finally is discharged through the outlet pipe 103. The solid objects in the sewage are crushed by setting the crushing device 3. It can prevent the solid objects in the sewage from clogging the filter hole 601 when passing through the first filtration, and can make the solid objects in the sewage be separated more thoroughly when passing through the filter plate 7, so as to facilitate the filtration; the forward and reverse motor 501 is started by the control terminal 104, and at this time, the forward and reverse motor 501 can drive the threaded rod 502 to rotate forwardly, and when the threaded rod 502 rotates, the moving block 503 can drive the scraper 505 to move, and the scraper 505 is fitted with the surface of the inclined plate 6, so that the scraper 505 can scrape the crushed solid objects accumulated on the surface of the inclined plate 6 during the movement, and scrape the solid objects in the sewage into the collection tank 9. The solid objects in the sewage are collected and processed internally, so that it can avoid the accumulation of solid objects on the inclined plate 6 to cause blockage, thereby improving the separation effect of solid objects. Long-term filtration will cause deposits on the surface of the filter plate 7. The forward and reverse motor 801 is started by the control terminal 104. The forward and reverse motor 801 drives the threaded rod 802 to rotate forward and reversely. During the rotation process, the threaded rod 802 can drive multiple cleaning brushes 805 to fit the surface of the filter plate 7 for cleaning, which can remove the sewage impurities accumulated on the surface of the filter plate 7, can effectively avoid the situation where the filter plate 7 is blocked and affects the filtration, and can improve the use effect of the entire solid-liquid separation device.

The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims (6)

1. A solid-liquid separation device for domestic sewage treatment, comprising: the utility model provides a device, including box (1), device shell (101) are installed to one side of box (1) surface, spacing groove (102) have been seted up to one side of device shell (101) inner wall, outlet pipe (103) are installed to the bottom of box (1) one side, control terminal (104) are installed to the surface mounting of box (1), unloading shell (2) are installed at the top of box (1), sealed lid (201) are installed at the top of unloading shell (2), water inlet (202) are installed to the surface mounting at sealed lid (201) top, the inner chamber of unloading shell (2) is provided with two reducing mechanism (3), waste bin (4) are installed to the surface mounting of box (1) one side, opening and closing door (401) are installed to the surface movable mounting of waste bin (4), T type movable groove (403) are all seted up to the both sides of waste bin (4) inner wall one side, delivery port (404) are seted up to the bottom of waste bin (4) inner wall one side, the inner chamber (6) are installed to the inner chamber (1) of box (4), device (5) are installed to the inner chamber (5), one side of swash plate (6) is connected in the inside of circulation mouth (405), a plurality of filtration holes (601) have been seted up on the surface of swash plate (6), install filter (7) in box (1) inner chamber, the inner chamber of box (1) is provided with cleaning device (8), the inside movable mounting of dustbin (4) has collecting vat (9).

2. The solid-liquid separation device for treating domestic sewage according to claim 1, wherein: the smashing device (3) comprises a motor (301), the motor (301) is fixedly embedded in one side of the surface of the blanking shell (2), a rotating rod (302) is fixedly arranged at the output end of the motor (301), one end of the rotating rod (302) is connected to the inner wall of the blanking shell (2) through a bearing, and a plurality of smashing cutters (303) are arranged on the surface of the rotating rod (302).

3. The solid-liquid separation device for treating domestic sewage according to claim 1, wherein: the mobile device (5) comprises a first positive motor (501), the first positive motor (501) is fixedly embedded on the surface of one side of the device shell (101), a first threaded rod (502) is fixedly arranged at the output end of the first positive motor (501), one end of the first threaded rod (502) is connected to one side of the inner wall of the device shell (101) through a bearing, a mobile block (503) is sleeved on the surface of the first threaded rod (502), a limiting block (504) is arranged on one side of the mobile block (503), a scraping plate (505) is arranged on the other side of the mobile block (503), and the limiting block (504) moves inside the limiting groove (102).

4. The solid-liquid separation device for treating domestic sewage according to claim 1, wherein: the cleaning device (8) comprises a positive motor II (801), the positive motor II (801) is fixedly arranged on the surface of the box body (1), a threaded rod II (802) is fixedly arranged at the output end of the positive motor II (801), one end of the threaded rod II (802) is connected to the inner wall of the box body (1) through a bearing, a U-shaped connecting plate (803) is movably sleeved on the surface of the threaded rod II (802), connecting rods (804) are arranged on the inner sides of the two ends of the U-shaped connecting plate (803), a plurality of cleaning brushes (805) are arranged on the surface of the connecting rods (804), limiting rods (806) are movably embedded on the surface of the other end of the U-shaped connecting plate (803), and two ends of each limiting rod (806) are fixedly arranged on two sides of the inner wall of the box body (1).

5. The solid-liquid separation device for treating domestic sewage according to claim 1, wherein: handle (901) is installed to one side of collecting vat (9), two pulley bars (902) are all installed to the outside both sides of collecting vat (9), four pulley bars (902) are all installed through the bearing to one end, four pulley (903) average divide into two sets of, two sets of pulley (903) all move about in the inside of two T type movable slots (403), a plurality of filter ports (904) have been seted up to the bottom of collecting vat (9) inner chamber.

6. The solid-liquid separation device for treating domestic sewage according to claim 1, wherein: the water outlet pipe (103), the water inlet (202), the water outlet (404), the circulation port (405) and the inside of the box body (1) are communicated.