Sewage treatment tank convenient for cleaning filter screen

Abstract

The utility model belongs to the field of sewage treatment, and particularly relates to a sewage treatment box convenient for cleaning a filter screen, which comprises a sewage treatment box body, an expansion slot is formed in the side wall of one side of the sewage treatment box body; a first closing plate is fixedly connected to the top of the inner side of the expansion slot; a second closing plate is fixedly connected to the top of the inner side of the expansion slot; an auxiliary sealing plate is slidably connected to the inner side of the first closing plate. A rack is slidably connected to the inner side of the first closing plate; during working, a connecting plate and a main sealing plate can be driven to move upwards through the inner side of a second sealing plate, and a worker can clean impurities on the side, close to the main sealing plate, of a cleaning push plate; the whole device improves the cleanliness of the top of the filter screen; the situation that the sewage treatment tank body which works normally needs to be shut down when the top of the filter screen is cleaned is reduced; the whole device reduces the working time of the sewage treatment tank body, so that the working efficiency of the sewage treatment tank body is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, in particular to a sewage treatment box which is convenient for cleaning a filter screen. Background Art

[0002] A sewage treatment tank is a water treatment device that can treat domestic sewage, construction sewage, and medical sewage. Different sewage treatment tanks use different treatment components and have different functions. For example, a sewage treatment tank with a filter inside can effectively filter food residues and waste gas debris in domestic water.

[0003] In the current existing technology, the sewage treatment tank is often composed of a filter, a sewage treatment tank body and a drainage component. After the sewage can be discharged into the sewage treatment tank through the drainage component, the filter can filter the sewage.

[0004] In the existing sewage treatment box with easy-to-clean filter, the filter can block impurities in the sewage during operation. When the filter surface needs to be cleaned, the sewage treatment box needs to be closed before cleaning the filter, which increases the working time of the sewage treatment box and reduces the working efficiency. Therefore, in view of the above problem, a sewage treatment box with easy-to-clean filter is proposed. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art and solve at least one technical problem raised in the background technology, the utility model provides a sewage treatment box which is convenient for cleaning the filter screen.

[0006] The technical solution adopted by the utility model to solve its technical problems is: the utility model describes a sewage treatment box that is easy to clean the filter, comprising a sewage treatment box body; an expansion slot is provided on one side wall of the sewage treatment box body; a first closing plate is fixedly connected to the top of the inner side of the expansion slot; a second closing plate is fixedly connected to the top of the inner side of the expansion slot; an auxiliary sealing plate is slidably connected to the inner side of the first closing plate; a rack is slidably connected to the inner side of the first closing plate; the top of the rack is arranged on the outside of the sewage treatment box body; the bottom of the rack is connected to the top of the auxiliary sealing plate; a first gear column is rotatably connected to the inner side wall of the first closing plate; a connecting column is fixedly connected to the end of the first gear column away from the first closing plate; the connecting column is arranged on the outside of the sewage treatment box body; the second closing plate is inside A main sealing plate is connected to the side sliding; the side wall of the main sealing plate on the side away from the first closing plate is fixedly connected with multiple groups of connecting plates; the side wall of the second closing plate is rotatably connected to the first transmission gear; a threaded column is threadedly connected to the inner side of the first transmission gear; the bottom of the threaded column is connected to the connecting plate; the side wall of the second closing plate on the side away from the first closing plate is rotatably connected to the second gear column; the second gear column and the first transmission gear are meshed with each other; the side wall of the sewage treatment tank body on the side away from the expansion slot is fixedly connected to the first output motor; the first output motor is rotatably connected to a threaded rotating column at one end close to the sewage treatment tank body; a push rod is threadedly connected to the outer side of the threaded rotating column; a cleaning push plate is fixedly connected to the end of the push rod away from the first output motor; the cleaning push plate is arranged inside the sewage treatment tank body.

[0007] Preferably, the side wall of the sewage treatment tank body close to the connecting column is fixed with multiple sets of fixing seats; the side wall of the sewage treatment tank body close to the connecting column is rotatably connected with multiple sets of rotating plates; the side walls of the rotating plates are fixed with elastic reset plates; the elastic reset plates are interconnected with the rotating plates; the side wall of the sewage treatment tank body close to the connecting column is fixed with multiple sets of clamping columns; the clamping columns and the side walls of the rotating plates are in contact with each other; a connecting column is fixed to the outer side of the connecting column; the connecting column and the rotating plate are meshed with each other.

[0008] Preferably, a discharge groove is provided at the inner bottom of the expansion groove; a second output motor is fixedly connected to one end of the sewage treatment tank body near the connecting column; the second output motor is rotatably connected to a guide column near the side wall of one side of the discharge groove; the guide column is arranged at the inner bottom of the second output motor.

[0009] Preferably, a limiting column is provided on the top of the main sealing plate; a slide groove is slidably connected to the inner side of the limiting column; and the top of the slide groove is connected to the inner top of the expansion slot.

[0010] Preferably, a pair of fixing grooves are provided inside the second sealing plate; a fitting wheel is rotatably connected inside the fixing groove; and a side wall of the fitting wheel fits with a side wall of the main sealing plate.

[0011] Preferably, a plurality of groups of first soft friction plates are fixedly connected to the bottom of the auxiliary sealing plate; a plurality of groups of second soft friction plates are fixedly connected to the top of the cleaning push plate.

[0012] Preferably, a cleaning scraper is fixedly connected to the bottom of the second closing plate; and the side wall of the cleaning scraper is in contact with the side wall of the main sealing plate.

[0013] Beneficial effects of the utility model:

[0014] 1. The utility model provides a sewage treatment box which is convenient for cleaning the filter screen. When the filter screen is pushed to the bottom of the inner side of the expansion groove, the connecting column is rotated to make the first gear column and the rack drive the auxiliary sealing plate to be pushed downward, and the auxiliary sealing plate and the bottom of the cleaning push plate are fitted with each other, so that a sealed space can be formed on the side of the cleaning push plate close to the main sealing plate; at this time, the second gear column is rotated, and the second gear column cooperates with the threaded column through the first transmission gear, which can drive the connecting plate and the main sealing plate to move upward through the inner side of the second closing plate, and the staff can clean the impurities on the side of the cleaning push plate close to the main sealing plate; the overall device improves the cleanliness of the top of the filter screen; and reduces the situation where the normal working sewage treatment box body needs to be shut down when cleaning the top of the filter screen; the overall device reduces the working time of the sewage treatment box body, thereby improving the working efficiency of the sewage treatment box body.

[0015] 2. The utility model provides a sewage treatment box which is convenient for cleaning the filter screen; when the connecting column rotates counterclockwise, it drives the auxiliary sealing plate to move upward through the inner side of the expansion slot, and the second transmission gear pushes the rotating plate to rotate toward the elastic reset plate, and the second transmission gear can rotate counterclockwise normally; thereby reducing the occurrence of the auxiliary sealing plate falling off downward; when it is necessary to push the auxiliary sealing plate to move downward, the second transmission gear can rotate normally by toggling the rotating plate toward the elastic reset plate; the overall device improves the stability of the auxiliary sealing plate during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0017] In the attached picture:

[0018] Figure 1 It is a three-dimensional diagram of the sewage treatment tank body of the utility model;

[0019] Figure 2 yes Figure 1 A magnified image of point A;

[0020] Figure 3 It is a three-dimensional diagram of the first closing plate in the utility model;

[0021] Figure 4 It is a three-dimensional diagram of the first gear column in the utility model;

[0022] Figure 5 It is a three-dimensional diagram of the second closing plate in the utility model.

[0023] Legend:

[0024] 1. Sewage treatment tank body; 11. Expansion slot; 12. First closing plate; 13. Second closing plate; 14. Auxiliary sealing plate; 15. Rack; 16. First gear column; 17. Connecting column; 18. Main sealing plate; 19. Connecting plate; 110. Threaded column; 111. First transmission gear; 112. Second gear column; 113. First output motor; 114. Threaded rotating column; 115. Push rod; 116. Cleaning push plate; 117. Filter screen; 2. Fixed seat; 21. Rotating plate; 22. Elastic reset plate; 23. Clamping column; 24. Second transmission gear; 3. Discharge trough; 31. Second output motor; 32. Guide column; 4. Limiting column; 41. Slide; 5. Fixed slot; 51. Fitting wheel; 6. First friction soft plate; 61. Second friction soft plate; 7. Cleaning scraper. DETAILED DESCRIPTION

[0025] 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 of 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.

[0026] Specific examples are given below.

[0027] See also Figure 1 - Figure 5The utility model provides a sewage treatment box which is convenient for cleaning the filter screen, comprising a sewage treatment box body 1; an expansion slot 11 is provided on one side wall of the sewage treatment box body 1; a first closing plate 12 is fixedly connected to the top of the inner side of the expansion slot 11; a second closing plate 13 is fixedly connected to the top of the inner side of the expansion slot 11; an auxiliary sealing plate 14 is slidably connected to the inner side of the first closing plate 12; a rack 15 is slidably connected to the inner side of the first closing plate 12; the top of the rack 15 is arranged outside the sewage treatment box body 1; the bottom of the rack 15 is connected to the top of the auxiliary sealing plate 14; a first gear column 16 is rotatably connected to the inner side wall of the first closing plate 12; the first gear column 16 A connecting column 17 is fixedly connected to one end away from the first closing plate 12; the connecting column 17 is arranged outside the sewage treatment tank body 1; a main sealing plate 18 is slidably connected to the inner side of the second closing plate 13; a plurality of connecting plates 19 are fixedly connected to the side wall of the main sealing plate 18 away from the first closing plate 12; a first transmission gear 111 is rotatably connected to the side wall of the second closing plate 13; a threaded column 110 is threadedly connected to the inner side of the first transmission gear 111; the bottom of the threaded column 110 is mutually connected to the connecting plate 19; a second gear column 112 is rotatably connected to the side wall of the second closing plate 13 away from the first closing plate 12; the second gear column 112 and the first transmission gear 111 are mutually connected meshing; a first output motor 113 is fixedly connected to the side wall of the sewage treatment tank body 1 away from the expansion slot 11; a threaded rotating column 114 is rotatably connected to the end of the first output motor 113 close to the sewage treatment tank body 1; a push rod 115 is threadedly connected to the outer side of the threaded rotating column 114; a cleaning push plate 116 is fixedly connected to the end of the push rod 115 away from the first output motor 113; the cleaning push plate 116 is arranged inside the sewage treatment tank body 1; during operation, when the sewage treatment tank body 1 is filtering normally, the bottom of the main sealing plate 18 and the bottom of the inner side of the expansion slot 11 fit each other, the inside of the sewage treatment tank body 1 can be sealed, and the filter screen 117 can filter the sewage When it is necessary to clean the top of the filter screen 117, the first output motor 113 is started, and the first output motor 113 drives the threaded rotating column 114 to rotate, so that the cleaning push plate 116 is pushed to move inside the sewage treatment tank body 1 through the push rod 115. During the movement of the cleaning push plate 116, the top of the filter screen 117 can be cleaned; when the filter screen 117 is pushed to the bottom of the inner side of the expansion slot 11, the first gear column 16 and the rack 15 are driven by the auxiliary sealing plate 14 to push downward by rotating the connecting column 17, and the auxiliary sealing plate 14 and the bottom of the cleaning push plate 116 are fitted with each other, so that a sealed space can be formed on the side of the cleaning push plate 116 close to the main sealing plate 18;At this time, the second gear column 112 is rotated, and the second gear column 112 cooperates with the threaded column 110 through the first transmission gear 111, which can drive the connecting plate 19 and the main sealing plate 18 to move upward through the inner side of the second closing plate 13, and the staff can clean the impurities on the side of the cleaning push plate 116 close to the main sealing plate 18; the overall device improves the cleanliness of the top of the filter screen 117; and reduces the need to shut down the normal working sewage treatment tank body 1 when cleaning the top of the filter screen 117; the overall device reduces the working time of the sewage treatment tank body 1, thereby improving the working efficiency of the sewage treatment tank body 1. ;

[0028] like Figure 2 As shown, the side wall of the sewage treatment box body 1 close to the connecting column 17 is fixed with multiple sets of fixing seats 2; the side wall of the sewage treatment box body 1 close to the connecting column 17 is rotatably connected with multiple sets of rotating plates 21; the side walls of the rotating plates 21 are fixed with elastic reset plates 22; the elastic reset plates 22 are interconnected with the rotating plates 21; the side wall of the sewage treatment box body 1 close to the connecting column 17 is fixed with multiple sets of clamping columns 23; the clamping columns 23 and the side walls of the rotating plates 21 are mutually attached; the outer side of the connecting column 17 is fixed with a connecting column 17; the connecting column 17 and the rotating plate 21 mesh with each other; during operation, when the connecting column 17 rotates counterclockwise, the auxiliary sealing plate 14 is driven to move upward through the inner side of the expansion slot 11, and the second transmission gear 24 pushes the rotating plate 21 to rotate toward the elastic reset plate 22, and the second transmission gear 24 can rotate counterclockwise normally; thereby reducing the occurrence of the auxiliary sealing plate 14 falling off downward; when it is necessary to push the auxiliary sealing plate 14 to move downward, the second transmission gear 24 can rotate normally by moving the rotating plate 21 toward the elastic reset plate 22; the overall device improves the stability of the auxiliary sealing plate 14 during operation.

[0029] like Figure 1 As shown, a discharge groove 3 is provided at the bottom of the inner side of the expansion groove 11; a second output motor 31 is fixedly connected to one end of the sewage treatment tank body 1 close to the connecting column 17; the second output motor 31 is rotatably connected to a guide column 32 on the side wall close to one side of the discharge groove 3; the guide column 32 is arranged at the bottom of the inner side of the second output motor 31; when working, the discharge groove 3 can guide the impurities inside the expansion groove 11, and move the second output motor 31, the second output motor 31 can drive the guide column 32 to rotate, and the rotating guide column 32 can discharge the impurities accumulated inside the discharge groove 3, thereby reducing the accumulation of impurities at the bottom of the inner side of the discharge groove 3; the overall device improves the ease of impurities to be discharged to the outside.

[0030] like Figure 1 and Figure 5As shown, a limiting column 4 is provided at the top of the main sealing plate 18; a slide groove 41 is slidably connected to the inner side of the limiting column 4; the top of the slide groove 41 is connected to the inner top of the expansion slot 11; when working, the limiting column 4 and the slide groove 41 cooperate with each other to assist the main sealing plate 18 to move through the inner side of the second closing plate 13; the overall device improves the stability of the main sealing plate 18 when working for a long time; and reduces the load on the contact surface between the main sealing plate 18 and the second closing plate 13.

[0031] like Figure 5 As shown, a pair of fixing grooves 5 are provided on the inner side of the second closing plate 13; a fitting wheel 51 is rotatably connected to the inner side of the fixing groove 5; the side wall of the fitting wheel 51 fits with the side wall of the main sealing plate 18; during operation, when the main sealing plate 18 moves through the inner side of the second closing plate 13, the fitting wheel 51 rotates together, thereby reducing the wear of the side wall of the main sealing plate 18 close to the first transmission gear 111, and the overall device improves the stability of the main sealing plate 18 during long-term operation; the overall device improves the service life of the main sealing plate 18.

[0032] like Figure 4 As shown, the bottom of the auxiliary sealing plate 14 is fixedly connected with multiple groups of first friction soft plates 6; the top of the cleaning push plate 116 is fixedly connected with multiple groups of second friction soft plates 61; during operation, when the cleaning push plate 116 and the bottom of the auxiliary sealing plate 14 are in contact with each other, the first friction soft plate 6 and the second friction soft plate 61 are in contact with each other, and the first friction soft plate 6 and the second friction soft plate 61 rub against each other, and the overall device reduces the situation in which the liquid inside the sewage treatment tank body 1 enters the space on the side of the cleaning push plate 116 close to the main sealing plate 18 through the connection between the cleaning push plate 116 and the auxiliary sealing plate 14; the overall device improves the sealing performance of the space on the side of the cleaning push plate 116 close to the main sealing plate 18.

[0033] like Figure 4 As shown, a cleaning scraper 7 is fixedly connected to the bottom of the second closing plate 13; the side wall of the cleaning scraper 7 is in contact with the side wall of the main sealing plate 18; during operation, when the main sealing plate 18 moves upward through the inner side of the second closing plate 13, the cleaning scraper 7 can clean the side wall of the main sealing plate 18, thereby reducing the occurrence of impurities attached to the side wall of the main sealing plate 18 entering the inner side of the second closing plate 13; the overall device improves the cleanliness of the inner side of the second closing plate 13.

[0034] Working principle: During operation, when the sewage treatment tank body 1 is filtering normally, the bottom of the main sealing plate 18 fits with the bottom of the inner side of the expansion slot 11, so that the inside of the sewage treatment tank body 1 can be sealed, and the filter screen 117 can filter the sewage; when it is necessary to clean the top of the filter screen 117, the first output motor 113 is started, and the first output motor 113 drives the threaded rotating column 114 to rotate, thereby pushing the cleaning push plate 116 to move inside the sewage treatment tank body 1 through the push rod 115. During the movement of the cleaning push plate 116, the top of the filter screen 117 can be cleaned; when the filter screen 117 is pushed to the bottom of the inner side of the expansion slot 11, the first gear column 16 and the rack 15 drive the auxiliary seal to move. The plate 14 is pushed downward, and the auxiliary sealing plate 14 and the bottom of the cleaning push plate 116 are fitted together, so that a sealed space can be formed on the cleaning push plate 116 near the main sealing plate 18; at this time, the second gear column 112 is rotated, and the second gear column 112 cooperates with the threaded column 110 through the first transmission gear 111, which can drive the connecting plate 19 and the main sealing plate 18 to move upward through the inner side of the second closing plate 13, and the staff can clean the impurities on the cleaning push plate 116 near the main sealing plate 18; the overall device improves the cleanliness of the top of the filter screen 117; and reduces the need to shut down the normal working sewage treatment tank body 1 when cleaning the top of the filter screen 117; the overall device reduces the work of the sewage treatment tank body 1 The working time is improved, thereby improving the working efficiency of the sewage treatment tank body 1; when the connecting column 17 rotates counterclockwise, the auxiliary sealing plate 14 is driven to move upward through the inner side of the expansion slot 11, and the second transmission gear 24 pushes the rotating plate 21 to rotate in the direction of the elastic reset plate 22, and the second transmission gear 24 can rotate counterclockwise normally; thereby reducing the occurrence of the auxiliary sealing plate 14 falling off downward; when it is necessary to push the auxiliary sealing plate 14 to move downward, the rotating plate 21 is moved in the direction of the elastic reset plate 22, and the second transmission gear 24 can rotate normally; the overall device improves the stability of the auxiliary sealing plate 14 during operation; the discharge trough 3 can guide the impurities inside the expansion slot 11, and move the second output motor 31, and the second output motor 31 can drive the guide column 3 2 rotates, and the rotating guide column 32 can discharge the impurities accumulated inside the discharge trough 3, thereby reducing the accumulation of impurities at the bottom of the inner side of the discharge trough 3; the overall device improves the ease of impurities to be discharged to the outside; the limiting column 4 and the slide groove 41 cooperate with each other to assist the main sealing plate 18 to move through the inner side of the second closing plate 13; the overall device improves the stability of the main sealing plate 18 when working for a long time; and reduces the load on the contact surface between the main sealing plate 18 and the second closing plate 13; when the main sealing plate 18 moves through the inner side of the second closing plate 13, the fitting wheel 51 rotates together, thereby reducing the wear of the side wall of the main sealing plate 18 close to the first transmission gear 111, and the overall device improves the stability of the main sealing plate 18 when working for a long time;The overall device improves the service life of the main sealing plate 18; when the cleaning push plate 116 and the bottom of the auxiliary sealing plate 14 are attached to each other, the first friction soft plate 6 and the second friction soft plate 61 are attached together, and the first friction soft plate 6 and the second friction soft plate 61 rub against each other, and the overall device reduces the liquid inside the sewage treatment tank body 1 through the connection between the cleaning push plate 116 and the auxiliary sealing plate 14 Enter the space on the side of the cleaning push plate 116 close to the main sealing plate 18; the overall device improves the sealing performance of the space on the side of the cleaning push plate 116 close to the main sealing plate 18; when the main sealing plate 18 moves upward through the inner side of the second closing plate 13, the cleaning scraper 7 can clean the side wall of the main sealing plate 18, thereby reducing the impurities attached to the side wall of the main sealing plate 18 Enter the inner side of the second closing plate 13; the overall device improves the cleanliness of the inner side of the second closing plate 13. ;

[0035] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A sewage treatment tank for easy cleaning of a filter screen, comprising a sewage treatment tank body (1); characterized in that: An expansion slot (11) is provided on one side wall of the sewage treatment tank body (1); a first closing plate (12) is fixedly connected to the top of the inner side of the expansion slot (11); a second closing plate (13) is fixedly connected to the top of the inner side of the expansion slot (11); an auxiliary sealing plate (14) is slidably connected to the inner side of the first closing plate (12); a rack (15) is slidably connected to the inner side of the first closing plate (12); the top end of the rack (15) is arranged outside the sewage treatment tank body (1); the rack (15) The bottom is connected to the top of the auxiliary sealing plate (14); the inner wall of the first closing plate (12) is rotatably connected to a first gear column (16); the first gear column (16) is fixedly connected to one end away from the first closing plate (12) with a connecting column (17); the connecting column (17) is arranged outside the sewage treatment tank body (1); the inner side of the second closing plate (13) is slidably connected to a main sealing plate (18); the side wall of the main sealing plate (18) away from the first closing plate (12) is fixedly connected to a plurality of connecting plates (19); the side wall of the second closing plate (13) is rotatably connected to a first transmission gear (111); the inner side of the first transmission gear (111) is threadedly connected to a threaded column (110); the bottom of the threaded column (110) is connected to the connecting plate (19); the side wall of the second closing plate (13) away from the first closing plate (12) is rotatably connected to a second gear column (112); the second gear column (112) and the first transmission gear (111) are meshed with each other; A first output motor (113) is fixedly connected to a side wall of the wastewater treatment box body (1) away from the expansion slot (11); the first output motor (113) is rotatably connected to an end of the wastewater treatment box body (1) close to a threaded rotating column (114); a push rod (115) is threadedly connected to the outer side of the threaded rotating column (114); a cleaning push plate (116) is fixedly connected to an end of the push rod (115) away from the first output motor (113); the cleaning push plate (116) is arranged inside the wastewater treatment box body (1).

2. A sewage treatment box for easy cleaning of the filter screen according to claim 1, characterized in that: The sewage treatment box body (1) is fixedly connected to a side wall on one side close to the connecting column (17) with a plurality of fixed seats (2); the sewage treatment box body (1) is rotatably connected to a side wall on one side close to the connecting column (17) with a plurality of rotating plates (21); the rotating plates (21) are fixedly connected to the side walls with elastic reset plates (22); the elastic reset plates (22) are mutually connected to the rotating plates (21); the sewage treatment box body (1) is fixedly connected to a side wall on one side close to the connecting column (17) with a plurality of clamping columns (23); the clamping columns (23) and the side walls of the rotating plates (21) are mutually fitted; the outer side of the connecting column (17) is fixedly connected to a connecting column (17); the connecting column (17) and the rotating plates (21) are mutually meshed.

3. A sewage treatment box for easy cleaning of the filter screen according to claim 1, characterized in that: A discharge groove (3) is provided at the inner bottom of the expansion groove (11); a second output motor (31) is fixedly connected to one end of the sewage treatment tank body (1) close to the connecting column (17); a guide column (32) is rotatably connected to the side wall of the second output motor (31) close to the discharge groove (3); and the guide column (32) is arranged at the inner bottom of the second output motor (31).

4. A sewage treatment box for easy cleaning of the filter screen according to claim 1, characterized in that: A limiting column (4) is provided on the top of the main sealing plate (18); a slide groove (41) is slidably connected to the inner side of the limiting column (4); and the top of the slide groove (41) is connected to the inner top of the expansion slot (11).

5. A sewage treatment box for easy cleaning of the filter screen according to claim 1, characterized in that: A pair of fixing grooves (5) are provided inside the second sealing plate (13); a fitting wheel (51) is rotatably connected inside the fixing groove (5); and the side wall of the fitting wheel (51) fits with the side wall of the main sealing plate (18).

6. A sewage treatment box for easy cleaning of the filter screen according to claim 1, characterized in that: The auxiliary sealing plate (14) has multiple groups of first friction soft plates (6) fixedly connected to the bottom thereof; and the cleaning push plate (116) has multiple groups of second friction soft plates (61) fixedly connected to the top thereof.

7. A sewage treatment box for easy cleaning of the filter screen according to claim 1, characterized in that: A cleaning scraper (7) is fixedly connected to the bottom of the second closing plate (13); the side wall of the cleaning scraper (7) is in contact with the side wall of the main sealing plate (18).

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