Sewage treatment equipment

Abstract

The invention discloses sewage treatment equipment which comprises a support body, a separation tank and a water outlet elbow pipe, the separation tank and the water outlet elbow pipe are fixedly installed through the support body, linear bearings are arranged at the axis of the top and the axis of the bottom of the separation tank, and a sliding separation device is arranged in the separation tank. The sliding separation device is matched with the linear bearings at the upper end and the lower end respectively, sealing is formed between the sliding separation device and the linear bearings, a water inlet pipe for sewage to enter is arranged at the position, close to the top, of the outer wall of the separation tank, a sewage discharging device is arranged at the upper middle portion of the outer wall of the separation tank, and a water outlet pipe is arranged at the upper end of the separation tank. The lower end of the sliding separation device is in butt joint with the water outlet bent pipe. The whole linkage of the device is completed through one action behavior of the driving device, and self-cleaning is achieved.

Description

Technical Field

[0001] The invention relates to sewage treatment equipment. Background Art

[0002] Sewage contains a lot of particulate matter. There are two main ways to separate this type of particulate matter: chemical treatment and physical treatment. Chemical treatment uses flocculants, while physical treatment uses sedimentation and filtration.

[0003] Regarding the filtration method, the prior art uses a metal filter to directly intercept sewage. The sewage flows through the metal filter so that the particulate matter in the sewage is intercepted by the metal filter. We have found in actual operation that with this filtration method, the filter pore blockage rate of the metal filter is relatively high, so it needs to be cleaned frequently, and the cleaning efficiency is low, and the cleaning time is long. At the same time, this cleaning method requires opening the equipment for cleaning, and the working environment is relatively poor.

[0004] Based on the above problems, we designed a sewage treatment equipment that can achieve rapid self-cleaning. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a sewage treatment device which can realize rapid self-cleaning.

[0006] To solve the above problems, the present invention adopts the following technical solutions:

[0007] A sewage treatment equipment comprises a support body, and a separation tank and a water outlet elbow fixedly installed by the support body, linear bearings are arranged at the top and bottom axis of the separation tank, a sliding separation device is arranged in the separation tank, the sliding separation device cooperates with the linear bearings at the upper and lower ends respectively, and forms a seal with the linear bearings, an inlet pipe for entering sewage is arranged at a position close to the top of the outer wall of the separation tank, a sewage discharge device is arranged at the middle and upper position of the outer wall of the separation tank, at the upper end of the separation tank, the lower end of the sliding separation device is butted against the water outlet elbow, when the sliding separation device moves upward along the linear bearing, the sewage deposited in the separation tank is lifted upward to the sewage discharge device, and the sewage is discharged through the sewage discharge device, a frame is installed on the top of the separation tank, a driving device is installed through the frame, and the driving device drives the sliding separation device to move up and down.

[0008] Preferably, the support body comprises an L-shaped vertical frame, through which the water outlet elbow is fixed, an arc plate is welded on the inner side of the vertical frame, the separation tank is fixed to the arc plate, and a rib plate is provided at an inner right angle position of the vertical frame.

[0009] Preferably, the separation tank includes a tank body and a tank cover, the tank cover is detachably installed on the top of the tank body, the upper linear bearing is installed at the axis of the tank cover, and the lower linear bearing is installed at the bottom axis of the tank body, the tank body is welded and fixed to the arc plate, the water inlet pipe is arranged near the top of the tank body, a sewage pipe is arranged at the middle and upper part of the tank body, the sewage discharge device is installed through the sewage pipe, and the sliding separation device is coaxial with the tank body.

[0010] Preferably, the sliding separation device comprises a sliding body, the interior of the sliding body is hollow, a downpipe is arranged at the bottom of the sliding body, the downpipe is slidably matched with the linear bearing below, and a seal is formed between the downpipe and the linear bearing, a through groove is arranged at the outer wall of the sliding body, a metal filter is installed at the through groove, and the filter hole size of the metal filter is 30 to 120 meshes, a sliding tube is arranged at the top axis of the sliding body, the sliding tube is slidably matched with the linear bearing above, and a seal is formed between the sliding bearing, and the sliding body is provided with a sliding tube. A scraper is provided at the bottom, and the scraper is in contact with the inner wall of the tank body. As the sliding body moves upward, the scraper lifts up the sediment deposited inside the tank body. An exhaust hole is provided at the bottom of the tank body, and the exhaust hole is closed after the scraper moves downward. A cleaning part is provided inside the tank body, and the cleaning part is driven to rotate by the driving device. As the driving device is driven, the cleaning part rotates, and the sliding body moves up and down. At this time, the cleaning part cleans the metal filter. A folding pipe is connected between the downpipe and the water outlet elbow.

[0011] Preferably, a slope is provided on the top of the scraper, the slope is inclined toward the lower left, and an arc-shaped groove is provided at the low position of the slope, and the sewage discharge device is cooperated with through the arc-shaped groove.

[0012] Preferably, the sewage discharge device includes a first motor and a rotating shaft installed by the first motor, a bearing and a shaft seal are provided between the rotating shaft and the sewage discharge pipe, the shaft seal is sealed on the inner side of the bearing, a spiral piece is provided on the rotating shaft, the spiral piece partially enters the tank body, a first sewage discharge pipe is provided at the bottom of the sewage discharge pipe, a dirt baffle plate is provided on the rotating shaft, the dirt brought into the sewage discharge pipe by the rotation of the spiral piece is blocked by the dirt baffle plate and falls into the first sewage discharge pipe, when the sliding body moves up to the extreme position, the spiral piece is fitted into the arc-shaped groove, so that the dirt gathered in the arc-shaped groove is brought into the sewage discharge pipe by the spiral piece.

[0013] Preferably, a water guide ring is provided on the inner wall of the tank body at a position above the sewage discharge pipe, and the water guide ring is conical, and the diameter gradually decreases downward.

[0014] Preferably, the driving device includes a second motor, a reducer, a screw and a shaft tube, the shaft tube is fixed to the frame, the shaft tube is coaxial with the sliding tube, the screw rotates to match the shaft tube, the upper end of the screw is connected to the output end of the reducer, the lower end of the screw passes through the shaft tube and matches the cleaning part, a bearing and a shaft seal are matched between the screw and the shaft tube, the shaft seal is sealed on the outside of the bearing, a slide groove is provided at the outer wall of the shaft tube, a nut is coaxially provided at the inner side of the sliding tube near the bottom position, a connecting plate is matched between the nut and the sliding tube, the connecting plate fits the slide groove, and the connecting plate slides vertically along the slide groove, the height of the lower end surface of the shaft tube is higher than the height of the lower edge of the sewage pipe, the shaft tube and the sliding tube are transitionally matched, a rubber scraper is embedded at the bottom pipe mouth position of the sliding tube, the rubber scraper acts on the outer wall of the shaft tube, the second motor is installed at the input end of the reducer, and the reducer is installed through the frame.

[0015] Preferably, a drainage hole is provided at the bottom of the shaft tube.

[0016] Preferably, the cleaning part includes a ring body, a connecting cap is coaxially arranged inside the ring body, connecting ribs are arranged between the connecting cap and the ring body, bristles are implanted at the outer wall of the ring body, the bristles act on the inner wall of the sliding body, and the connecting cap is fixed to the lower end of the screw.

[0017] The beneficial effects of the present invention are:

[0018] Advantage 1: This device can realize passive filtration of sewage. The sewage flows into the separation tank and is filtered through the sliding separation device. The filtered sewage is discharged from the sliding separation device, and the intercepted dirt is deposited in the separation tank.

[0019] Advantage 2: When the driving device drives the sliding separation device upward, the relative height of the cleaning part inside the sliding separation device gradually decreases, thereby cleaning the metal filter. After cleaning, the metal filter restores its filtering capacity. At the same time, the upward movement of the sliding separation device will also push the sediment deposited in the separation tank upward, realizing the self-cleaning function. This self-cleaning does not require opening the equipment, thus avoiding odor overflow and saving manual labor.

[0020] Advantage three: the device completes the overall linkage of the device through an action of the driving device, realizes self-cleaning, and is suitable for popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 is a perspective view of a sliding separation device;

[0024] Figure 3 is a partial cross-sectional view of the device;

[0025] Figure 4 is an overall cross-sectional view of the device;

[0026] Figure 5 This is the enlarged view of point A;

[0027] Figure 6 This is an enlarged view of point B;

[0028] Figure 7 This is the enlarged view of point C;

[0029] Figure 8 A top view of the cleaning section;

[0030] Fig. 9 is a schematic diagram of the sliding separation device being in the lower position;

[0031] Fig.10 It is a schematic diagram when the sliding separation device is in the upper position. DETAILED DESCRIPTION

[0032] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0033] Any feature disclosed in this specification (including any additional claims, abstract and drawings), unless otherwise stated, may be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0034] In the description of the present invention, it is necessary to understand that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "center", "end", "length", "outer end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] In addition, in the description of the present invention, “plurality” means at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "disposed", "socketed", "connected", "through", "plugged" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] See also Figure 1 and Figure 2 A sewage treatment equipment shown in the figure includes a bracket body 1, and a separation tank 2 and a water outlet elbow 3 fixedly installed by the bracket body 1, linear bearings 4 are provided at the top and bottom axis of the separation tank 2, a sliding separation device 5 is provided in the separation tank 2, the sliding separation device 5 cooperates with the linear bearings 4 at the upper and lower ends respectively, and forms a seal with the linear bearings 4, an inlet pipe 6 for entering sewage is provided at a position near the top of the outer wall of the separation tank 2, a sewage discharge device 7 is provided at the middle and upper position of the outer wall of the separation tank 2, at the upper end of the separation tank 2, the lower end of the sliding separation device 5 is connected to the water outlet elbow 3, when the sliding separation device 5 moves upward along the linear bearing 4, the sewage deposited in the separation tank 2 is lifted upward to the sewage discharge device 7, and the sewage is discharged through the sewage discharge device 7, a frame 8 is installed on the top of the separation tank 2, and a driving device 9 is installed through the frame 8, and the driving device 9 drives the sliding separation device 5 to move up and down.

[0038] In the above technical solution, when normal filtration is used, the driving device 9 drives the sliding separation device 5 downward to the extreme position. At this time, sewage containing a large amount of particulate matter enters from the water inlet pipe 6. This part of the sewage enters the separation tank 2 and passes through the sliding separation device 5. The particulate matter is intercepted in the separation tank 2. The separated water passes through the sliding separation device 5 and is then discharged through the outlet elbow 3, completing the separation of the particulate matter and sewage.

[0039] See also Fig. 9 and Fig.10 As shown, when the sliding separation device 5 intercepts more particulate matter and more sediment is accumulated in the separation tank 2, the filtering capacity of the sliding separation device 5 is insufficient. At this time, the sliding separation device 5 is driven upward step by step by the driving device 9. During the upward process, the sliding separation device 5 completes internal cleaning and lifts the sediment deposited in the separation tank 2 upward to the position of the sewage discharge device 7, and actively discharges sewage through the sewage discharge device 7.

[0040] After the sewage discharge is completed, the sliding separation device 5 is lowered to the original position to start the next filtration. During the upward movement of the sliding separation device 5, the water inlet at the water inlet pipe 6 needs to be stopped. Specifically, an electric control valve can be installed on the water inlet pipe 6 for remote operation. When the sliding separation device 5 ascends to the upper limit, the water inlet of the water inlet pipe 6 can be opened. At this time, the water inlet can flush the sediment that ascends with the sliding separation device 5, so as to effectively remove this part of the sediment.

[0041] See also Figure 1 As shown, the support body 1 includes an L-shaped vertical frame 101, through which the water outlet elbow 3 is fixed, an arc plate 102 is welded on the inner side of the vertical frame 101, the separation tank 2 is fixed to the arc plate 102, and a rib plate 103 is provided at a right angle position inside the vertical frame 101.

[0042] The above technical solution realizes the fixed installation of the separation tank 2.

[0043] See also Figure 1 and Figure 3 As shown, the separation tank 2 includes a tank body 201 and a tank cover 202, the tank cover 202 is detachably installed on the top of the tank body 201, the upper linear bearing 4 is installed at the axis of the tank cover 202, and the lower linear bearing 4 is installed at the bottom axis of the tank body 201, the tank body 201 is welded and fixed to the arc plate 103, the water inlet pipe 6 is arranged at a position close to the top of the tank body 201, and a sewage pipe 203 is arranged at a middle and upper position of the tank body 201, the sewage discharge device 7 is installed through the sewage pipe 203, and the sliding separation device 5 is coaxial with the tank body 201.

[0044] In the above technical solution, the tank body 201 and the tank cover 202 are matched, and the tank cover 202 can be opened upward, which is convenient for the production and assembly of the device and also convenient for internal maintenance.

[0045] See also Figures 1 to 7 As shown, the sliding separation device 5 includes a sliding body 501, the interior of the sliding body 501 is hollow, a downpipe 502 is provided at the bottom of the sliding body 501, the downpipe 502 is slidably matched with the linear bearing 4 below, and a seal is formed between the downpipe 502 and the linear bearing 4, a through groove is provided at the outer wall of the sliding body 501, a metal filter 503 is installed at the through groove, and the filter hole size of the metal filter 503 is 30 to 120 meshes, a sliding tube 504 is provided at the top axis of the sliding body 501, the sliding tube 504 is slidably matched with the linear bearing 4 above, and a seal is formed between the sliding bearing 4, and a scraper 5 is provided at the bottom of the sliding body 501. 05, the scraper 505 is attached to the inner wall of the tank body 201, and as the sliding body 501 moves upward, the scraper 501 lifts up the sediment deposited inside the tank body 201, and an exhaust hole 2221 is provided at the bottom of the tank body 201, and the exhaust hole 2221 is closed after the scraper 505 moves downward, and a cleaning part 10 is provided inside the tank body 201, and the cleaning part 10 is driven to rotate by the driving device 9, and as the driving device 9 is driven, the cleaning part 10 rotates, and the sliding body 501 moves up and down, and at this time, the cleaning part 10 cleans the metal filter 503; a folding pipe 303 is connected between the downpipe 502 and the water outlet elbow 3.

[0046] In the above technical solution, the inner wall of the metal filter 503 is flush with the inner wall of the sliding body 501 , which also facilitates the cleaning unit 10 to clean the metal filter 503 .

[0047] In the above technical solution, the sliding body 501 can move upward and downward under the driving action of the driving device 9. When it moves downward to the extreme position, the sewage enters the tank body 201 and passes through the metal filter 503 to complete the separation, and the intercepted particles are deposited on the upper part of the scraper 505. As more and more particles are intercepted, the filtering capacity of the metal filter 503 gradually decreases, and the sediment accumulated on the scraper 505 also gradually increases. At this time, the water level in the tank body 201 gradually rises, and the metal filter 503 needs to be cleaned.

[0048] The driving device 9 drives the cleaning part 10 to rotate rapidly. While the cleaning part 10 rotates, the driving device 9 also drives the sliding body 501 upward. During the upward movement of the sliding body 501, the cleaning part 10 cleans the metal filter 503, and the scraper 505 pushes the sediment upward to the position of the sewage discharge device 7.

[0049] A driving action of the driving device 9 drives the sliding body 501 upward, uses the scraper 505 to push the sediment, and also uses the cleaning part 10 to clean the metal filter screen 503.

[0050] After the above cleaning action is completed, the driving device 9 drives the sliding body 501 to return to its original position.

[0051] The exhaust hole 2221 is provided to firstly discharge water leaking from the assembly gap between the scraper 505 and the tank body 201, and secondly to discharge excess gas during the downward movement of the scraper 505, so as to facilitate the smooth downward movement of the sliding body 501 and reduce gas resistance.

[0052] See also Figure 1 and Figure 2 As shown, a slope 555 is provided on the top of the scraper 505, and the slope 555 is inclined toward the lower left. An arc-shaped groove 556 is provided at the low position of the slope 555, and the sewage discharge device 7 is cooperated through the arc-shaped groove 556.

[0053] In the above technical solution, the inclined surface 555 facilitates guiding the sediment to gather in the direction of the arc-shaped groove 556. The arc-shaped groove 556 cooperates with the sewage discharge device 7 to discharge sewage, so that the accumulated sediment can be discharged more thoroughly.

[0054] See also Figure 1 , Figure 3 , Figure 4 and Figure 7 As shown, the sewage discharge device 7 includes a first motor 701 and a rotating shaft 702 installed by the first motor 701, a bearing and a shaft seal are matched between the rotating shaft 702 and the sewage pipe 203, and the shaft seal is sealed on the inner side of the bearing, a spiral piece 703 is arranged on the rotating shaft 702, and the spiral piece 703 partially enters the tank body 201, and a first sewage pipe 233 is arranged at the bottom of the sewage pipe 203, and a dirt baffle plate 704 is arranged on the rotating shaft 702. The dirt brought into the sewage pipe 203 by the rotation of the spiral piece 703 falls into the first sewage pipe 233 after being blocked by the dirt baffle plate 704. When the sliding body 501 moves up to the extreme position, the spiral piece 703 is fitted into the arc groove 556, so that the dirt gathered at the arc groove 556 is brought into the sewage pipe 203 by the spiral piece 703.

[0055] In the above technical solution, the first motor 701 drives the rotating shaft 702 to rotate, so that the spiral blade 703 brings out the sediment located in the tank body 201. The spiral blade 703 is fitted into the arc groove 556, which can smoothly bring out the sediment pushed up by the scraper 505 to complete rapid cleaning.

[0056] The sewage pipe 203 is in a normally open state. When the filtering capacity of the metal filter 503 is insufficient and causes the sewage level in the tank 201 to rise, the sewage can overflow from the sewage pipe 203 in an emergency.

[0057] See also Figure 3 As shown, a water guide ring 2323 is provided on the inner wall of the tank body 201 above the sewage pipe 203. The water guide ring 2323 is conical, and its diameter gradually decreases downward.

[0058] The design of the water guide ring 2323 is to prevent sewage from flowing along the inner wall of the tank body 201 and to prevent sewage from directly entering the sewage pipe 203 .

[0059] Secondly, when clean water enters through the water inlet pipe 6 , the water can be gathered downward in a ring shape to flush the scraper 505 .

[0060] See also Figure 1 , Figure 4 and Figure 5 As shown, the driving device 9 includes a second motor 91, a reducer 92, a screw 93 and a shaft tube 94, the shaft tube 95 is fixed to the frame 8, the shaft tube 95 is coaxial with the sliding tube 504, the screw 93 rotates to match the shaft tube 94, the upper end of the screw 93 is connected to the output end of the reducer 92, the lower end of the screw 93 passes through the shaft tube 94 and then matches the cleaning part 10, a bearing and a shaft seal are matched between the screw 93 and the shaft tube 94, the shaft seal is sealed on the outside of the bearing, a slide groove 95 is provided on the outer wall of the shaft tube 94, and the inner side of the sliding tube 504 is coaxial near the bottom position. A nut 544 is provided, and a connecting plate 545 is matched between the nut 544 and the sliding tube 504. The connecting plate 545 fits the slide groove 95, and the connecting plate 545 slides vertically along the slide groove 95. The height of the lower end surface of the shaft tube 94 is higher than the height of the lower edge of the sewage pipe 203. The shaft tube 94 and the sliding tube 504 are transitionally matched. A rubber scraper 546 is embedded at the bottom pipe mouth position of the sliding tube 504, and the rubber scraper 546 acts on the outer wall of the shaft tube 94. The second motor 91 is installed at the input end of the reducer 92, and the reducer 92 is installed through the frame 8.

[0061] In the above technical solution, torque is outputted by the second motor 91, and the transmission ratio is reduced by the reducer 92. The rotation of the screw 93 drives the cleaning part 10 at the bottom thereof to rotate. The screw 93 adopts a small pitch. Each time the screw 93 rotates one circle, it drives the nut 544 to move upward by 1 mm. Under this operation, the upward speed of the sliding body 501 is slow. At the same time, the rotation speed of the cleaning part 10 is fast, so that the cleaning part 10 can fully clean the metal filter 503.

[0062] See also Figure 5 As shown, a drainage hole 994 is provided at the bottom of the shaft tube 94 .

[0063] The drain hole 994 can drain water that accidentally enters the shaft tube 94 .

[0064] See also Figure 4 and Figure 8 As shown, the cleaning portion 10 includes a ring body 1010, a connecting cap 1011 is coaxially arranged inside the ring body 1010, a connecting rib 1012 is arranged between the connecting cap 1011 and the ring body 1010, bristles 1013 are implanted on the outer wall of the ring body 1010, the bristles 1013 act on the inner wall of the sliding body 501, and the connecting cap 1011 is fixed to the lower end of the screw 93.

[0065] In the above technical solution, the ring body 1010 is driven to rotate by the screw 93, and the inner wall of the metal filter 503 is cleaned by the bristles 1013.

[0066] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A sewage treatment equipment, characterized in that: The invention comprises a support body (1), and a separation tank (2) and a water outlet elbow (3) fixedly mounted by the support body (1); linear bearings (4) are arranged at the top and bottom axis of the separation tank (2); a sliding separation device (5) is arranged in the separation tank (2); the sliding separation device (5) cooperates with the linear bearings (4) at the upper and lower ends respectively and forms a seal with the linear bearings (4); a water inlet pipe (6) for entering sewage is arranged at a position close to the top of the outer wall of the separation tank (2); and a water outlet elbow (6) is arranged at a middle and upper position of the outer wall of the separation tank (2). A sewage discharge device (7) is provided at the upper end of the separation tank (2). The lower end of the sliding separation device (5) is butted against the water outlet elbow (3). When the sliding separation device (5) moves upward along the linear bearing (4), the sewage deposited in the separation tank (2) is lifted upward to the sewage discharge device (7) and discharged through the sewage discharge device (7). A frame (8) is installed on the top of the separation tank (2). A driving device (9) is installed through the frame (8). The driving device (9) drives the sliding separation device (5) to move up and down.

2. The sewage treatment equipment according to claim 1, characterized in that: The support body (1) comprises an L-shaped vertical frame (101), the water outlet elbow (3) is fixed by the vertical frame (101), an arc plate (102) is welded on the inner side of the vertical frame (101), the separation tank (2) is fixed to the arc plate (102), and a rib plate (103) is provided at a right angle position inside the vertical frame (101).

3. The sewage treatment equipment according to claim 2, characterized in that: The separation tank (2) comprises a tank body (201) and a tank cover (202); the tank cover (202) is detachably mounted on the top of the tank body (201); the upper linear bearing (4) is mounted on the axis of the tank cover (202); the lower linear bearing (4) is mounted on the bottom axis of the tank body (201); the tank body (201) is welded and fixed to the arc plate (103); the water inlet pipe (6) is arranged at a position close to the top of the tank body (201); a sewage pipe (203) is arranged at a middle and upper position of the tank body (201); the sewage discharge device (7) is installed through the sewage discharge pipe (203); and the sliding separation device (5) is coaxial with the tank body (201).

4. The sewage treatment equipment according to claim 4, characterized in that: The sliding separation device (5) comprises a sliding body (501), the interior of the sliding body (501) is hollow, a water pipe (502) is arranged at the bottom of the sliding body (501), the water pipe (502) is in sliding cooperation with the linear bearing (4) below, and forms a seal with the linear bearing (4), a through groove is arranged at the outer wall of the sliding body (501), a metal filter (503) is installed at the through groove, and the filter hole size of the metal filter (503) is 30 to 120 meshes, a sliding tube (504) is arranged at the top axis of the sliding body (501), the sliding tube (504) is in sliding cooperation with the linear bearing (4) above, and forms a seal with the sliding bearing (4), a scraper (505) is arranged at the bottom of the sliding body (501), and the The scraper (505) is attached to the inner wall of the tank body (201). As the sliding body (501) moves upward, the scraper (501) lifts the sediment deposited inside the tank body (201) upward. An exhaust hole (2221) is provided at the bottom of the tank body (201). The exhaust hole (2221) is closed after the scraper (505) moves downward. A cleaning part (10) is provided inside the tank body (201). The cleaning part (10) is driven to rotate by the driving device (9). As the driving device (9) is driven, the cleaning part (10) rotates, and the sliding body (501) moves up and down. At this time, the cleaning part (10) cleans the metal filter (503). A folding pipe (303) is connected between the downpipe (502) and the outlet elbow (3).

5. The sewage treatment equipment according to claim 4, characterized in that: The top of the scraper (505) is provided with an inclined surface (555), and the inclined surface (555) is inclined toward the lower left. An arc-shaped groove (556) is provided at the low position of the inclined surface (555), and the sewage discharge device (7) is matched through the arc-shaped groove (556).

6. The sewage treatment equipment according to claim 5, characterized in that: The sewage discharge device (7) comprises a first motor (701) and a rotating shaft (702) installed by the first motor (701); a bearing and a shaft seal are provided between the rotating shaft (702) and the sewage discharge pipe (203); the shaft seal is sealed on the inner side of the bearing; a spiral blade (703) is provided on the rotating shaft (702); the spiral blade (703) partially enters the tank body (201); a first sewage discharge pipe (233) is provided at the bottom of the sewage discharge pipe (203); A dirt baffle plate (704) is provided on the rotating shaft (702). The dirt brought into the sewage pipe (203) by the rotation of the spiral blade (703) falls into the first sewage pipe (233) after being blocked by the dirt baffle plate (704). When the sliding body (501) moves upward to the extreme position, the spiral blade (703) is fitted into the arc-shaped groove (556), so that the dirt accumulated in the arc-shaped groove (556) is brought into the sewage pipe (203) by the spiral blade (703).

7. The sewage treatment equipment according to claim 6, characterized in that: A water guide ring (2323) is provided on the inner wall of the tank body (201) at a position above the sewage discharge pipe (203); the water guide ring (2323) is conical, and its diameter gradually decreases downward.

8. The sewage treatment equipment according to claim 4, characterized in that: The driving device (9) comprises a second motor (91), a reducer (92), a screw (93) and a shaft tube (94); the shaft tube (95) is fixed to the frame (8); the shaft tube (95) is coaxial with the sliding tube (504); the screw (93) rotates to match the shaft tube (94); the upper end of the screw (93) is connected to the output end of the reducer (92); the lower end of the screw (93) passes through the shaft tube (94) and matches the cleaning part (10); a bearing and a shaft seal are matched between the screw (93) and the shaft tube (94); the shaft seal is sealed on the outside of the bearing; a slide groove (95) is provided on the outer wall of the shaft tube (94); the inner side of the sliding tube (504) is coaxial with the bottom position A nut (544) is provided, and a connecting plate (545) is matched between the nut (544) and the sliding tube (504), and the connecting plate (545) fits the slide groove (95). The connecting plate (545) slides vertically along the slide groove (95). The height of the lower end surface of the shaft tube (94) is higher than the height of the lower edge of the sewage pipe (203). The shaft tube (94) and the sliding tube (504) are transitionally matched. A rubber scraper (546) is embedded at the bottom pipe mouth position of the sliding tube (504), and the rubber scraper (546) acts on the outer wall of the shaft tube (94). The second motor (91) is installed at the input end of the reducer (92), and the reducer (92) is installed through the frame (8).

9. The sewage treatment equipment according to claim 8, characterized in that: A drainage hole (994) is provided at the bottom of the shaft tube (94).

10. The sewage treatment equipment according to claim 8, characterized in that: The cleaning portion (10) comprises a ring body (1010), a connecting cap (1011) is coaxially arranged inside the ring body (1010), connecting ribs (1012) are arranged between the connecting cap (1011) and the ring body (1010), bristles (1013) are implanted on the outer wall of the ring body (1010), the bristles (1013) act on the inner wall of the sliding body (501), and the connecting cap (1011) is fixed to the lower end of the screw rod (93).

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