Scrubber base sewage tank reinforced bearing drainage structure

The drive mechanism drives the scraper mechanism to clean up debris and spray high-pressure gas, which solves the problem of easy blockage of the sewage tank filter, and realizes the normal operation and efficient filtration of the equipment.

CN223250091UActive Publication Date: 2025-08-22SUZHOU ZHONGLONG ELECTRICAL & MECHANICAL PARTS CO LTD
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Patent Information

Application Number
CN202422458377.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-11
Publication Date
2025-08-22
Estimated Expiration
2034-10-11

AI Technical Summary

Technical Problem

When existing sewage tanks filter sewage, the filter net is likely to be blocked, affecting filtration efficiency.

Method used

The drive mechanism is used to drive the scraper mechanism to reciprocate along the mesh plate, clean up debris and fall into the recycling box through the through grooves. At the same time, high-pressure gas is sprayed out of the air outlet pipe to avoid clogging of the mesh plate, and the mesh plate is designed as a concave structure to prevent water from flowing into the recycling box.

Benefits of technology

It effectively avoids mesh board blockage, ensures normal operation of equipment, reduces energy losses, and improves filtration efficiency.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN223250091U_ABST
    Figure CN223250091U_ABST
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Abstract

The utility model relates to the technical field of sewage tanks, and discloses a floor scrubber base sewage tank reinforced bearing drainage structure which comprises a sewage tank mechanism and further comprises a first transmission mechanism, a driving mechanism, an air outlet pipe, a second transmission mechanism and a scraper blade mechanism, and the inner wall of the side face of the sewage tank mechanism is fixedly connected with the side face of the first transmission mechanism. The side surface of the driving mechanism is fixedly connected with the side surface of the sewage tank mechanism; the first transmission mechanism and the second transmission mechanism are driven by the driving mechanism to move, so that the scraping plate mechanism reciprocates along the screen plate, the two ends of a glove box screen plate at the top of the screen plate are cleaned, and the glove box screen plate falls into a recycling box through a through groove to be treated in a centralized mode; and meanwhile, the top of the concave structure of the screen plate prevents water from flowing into the recycling box from the two ends of the screen plate, equipment blockage is avoided, and normal operation of the equipment is ensured.
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Description

Technical Field

[0001] The utility model relates to the technical field of sewage tanks, in particular to a reinforced load-bearing and drainage structure of a sewage tank at a floor scrubber base. Background Art

[0002] A floor scrubber is a fully automatic cleaning device that combines spraying, scrubbing, and wastewater recovery. It's equipped with a brush disc motor, a brush plate, and a water suction motor. Its main components include a brush plate, a clean water tank, a wastewater tank, a power supply (electrical wire or rechargeable battery), a control unit, a water suction motor, a squeegee, main wheels, universal wheels, and a fully automatic drive motor. To avoid wasting water during use, wastewater from the floor scrubber is often transported to a specialized wastewater treatment facility for treatment. During the treatment process, the wastewater is filtered in the wastewater tank to remove solid debris.

[0003] With respect to the above-mentioned related technologies, the inventors found that when existing sewage tanks process sewage, the sewage is mostly filtered through a filter. However, as the waste accumulates on the filter, it is easy to cause the filter to be clogged, affecting the filtering efficiency. Utility Model Content

[0004] In order to solve the above technical problems, the present invention provides a floor scrubber base sewage tank reinforced load-bearing and drainage structure to solve the problems existing in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A floor scrubber base sewage tank reinforced load-bearing drainage structure includes a sewage tank mechanism, and also includes: a first transmission mechanism, a drive mechanism, an air outlet pipe, a second transmission mechanism and a scraper mechanism, the side inner wall of the sewage tank mechanism is fixedly connected to the side of the first transmission mechanism, the side of the drive mechanism is fixedly connected to the side of the sewage tank mechanism, the side of the second transmission mechanism is fixedly connected to the side inner wall of the sewage tank mechanism, the bottom end of the air outlet pipe is fixedly connected to the top of the second transmission mechanism, the bottom end of the first transmission mechanism is fixedly connected to the top of the scraper mechanism, the sewage tank mechanism includes a sewage tank body, the side of the sewage tank body is fixedly connected with the water outlet pipe, the bottom end of the sewage tank body is fixedly connected with the drain pipe, the side inner wall of the sewage tank body is fixedly connected with a mesh plate, the side of the sewage tank body is fixedly provided with a through groove, the side of the sewage tank body is fixedly connected to a recovery box at a position corresponding to the through groove, the top of the mesh plate is a concave curved surface structure, the structure of the first transmission mechanism is the same as that of the second transmission mechanism, the side of the air outlet pipe is fixedly connected to a high-pressure gas cylinder through a connecting pipe, and the top of the air outlet pipe is provided with an air outlet hole.

[0007] To implement the above technical solution, the driving mechanism drives the first transmission mechanism and the second transmission mechanism to move, so that the scraper mechanism reciprocates along the mesh plate, cleans the two ends of the mesh plate in the debris box on the top of the mesh plate, and drops the gas into the recovery box through the through groove for centralized treatment. At the same time, the air outlet pipe reciprocates along the second slide groove and sprays high-pressure gas toward the mesh plate to avoid clogging of the mesh plate holes. At the same time, the top of the concave structure of the mesh plate prevents water from flowing into the recovery box at both ends of the mesh plate, which is beneficial to avoid clogging of the equipment and ensure the normal operation of the equipment.

[0008] As a preferred solution of the present application, a third chute is provided on the inner side wall of the recycling box, a movable plate is movably connected to the side of the third chute, and a handle is fixedly connected to the side of the movable plate.

[0009] As a preferred solution of the present application, the first transmission mechanism includes a mounting block, the side surface of the mounting block is fixedly connected to the side inner wall of the sewage tank body, the bottom end of the mounting block is movably sleeved with a mounting rod, the bottom end of the mounting rod is fixedly connected to a transmission wheel, the side of the transmission wheel is transmission-connected with a transmission belt, a first slide groove is provided on the side inner wall of the sewage tank body, a mounting plate is movably connected to the side of the first slide groove, the bottom end of the mounting plate is fixedly connected to the top of the scraper mechanism, a second slide groove is provided on the side inner wall of the sewage tank body corresponding to the position of the second transmission mechanism, and the top of the mounting plate is movably connected to the bottom end of the transmission belt.

[0010] As a preferred solution of the present application, the first transmission mechanism includes a mounting block, the side surface of the mounting block is fixedly connected to the side inner wall of the sewage tank body, the bottom end of the mounting block is movably sleeved with a mounting rod, the bottom end of the mounting rod is fixedly connected to a transmission wheel, the side of the transmission wheel is transmission-connected with a transmission belt, a first slide groove is provided on the side inner wall of the sewage tank body, a mounting plate is movably connected to the side of the first slide groove, the bottom end of the mounting plate is fixedly connected to the top of the scraper mechanism, a second slide groove is provided on the side inner wall of the sewage tank body corresponding to the position of the second transmission mechanism, and the top of the mounting plate is movably connected to the bottom end of the transmission belt.

[0011] As a preferred solution of the present application, the scraper mechanism includes a scraper body, the top of the scraper body is fixedly connected to a pressure spring, the bottom end of the mounting plate is provided with a mounting groove, the top of the pressure spring is fixedly connected to the top of the mounting groove, and the bottom end of the scraper body is movably connected to the top of the mesh plate.

[0012] As a preferred solution of the present application, the driving mechanism includes a base plate, the side surface of the base plate is fixedly connected to the side surface of the sewage tank body, the top of the base plate is fixedly connected to the driving motor, the output shaft of the driving motor is fixedly connected to the driving gear, the top of the base plate is movably sleeved with a transmission shaft, the top of the transmission shaft is fixedly connected to the second driving bevel gear, the side of the transmission shaft is fixedly sleeved with a driven gear, the side surface of the driven gear and the side surface of the driving gear are meshed with each other, the side of the sewage tank body is movably sleeved with a transmission rod, the side surface of the transmission rod is fixedly connected to the second driven bevel gear, the side surface of the second driven bevel gear and the side surface of the second driving bevel gear are meshed with each other, the side surface of the transmission rod is fixedly connected to the first driving bevel gear, the top of the mounting rod is fixedly connected to the first driven bevel gear, and the side surface of the first driven bevel gear and the side surface of the first driving bevel gear are meshed with each other.

[0013] In summary, this application includes at least one of the following beneficial technical effects:

[0014] 1. The utility model drives the first transmission mechanism and the second transmission mechanism to move through the driving mechanism, so that the scraper mechanism reciprocates along the mesh plate, cleans the debris box on the top of the mesh plate and both ends of the mesh plate, and drops the debris box into the recovery box through the through slot for centralized treatment. At the same time, the air outlet pipe reciprocates along the second slide groove and sprays high-pressure gas toward the mesh plate to avoid clogging of the mesh plate. At the same time, the top of the concave structure of the mesh plate prevents water from flowing into the recovery box at both ends of the mesh plate, which is beneficial to avoid clogging of the equipment and ensure the normal operation of the equipment.

[0015] 2. The utility model drives the driving gear to rotate through the driving motor, drives the transmission shaft to rotate through the mutual meshing of the driving gear and the driven gear, drives the transmission rod to rotate through the mutual meshing of the second driving bevel gear and the second driven bevel gear, drives the mounting rod to rotate through the mutual meshing of the first driving bevel gear and the first driven bevel gear, thereby causing the transmission wheel to drive the transmission belt to move, and the push rod moves with the transmission belt, so that the push rod slides inside the movable groove and drives the mounting plate to reciprocate along the first slide groove. Similarly, the driving mechanism drives the outlet pipe to reciprocate along the second slide groove through the second transmission mechanism. One driving component drives multiple devices to operate, which is beneficial to reducing energy loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.

[0017] Figure 1 This is a schematic diagram of the overall cross-sectional structure of the present utility model;

[0018] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the bottom structure of the recycling box of the present utility model;

[0020] Figure 4 This is a schematic structural diagram of the first transmission mechanism of the present utility model;

[0021] Figure 5 For the utility model Figure 4 Structural diagram at A;

[0022] Figure 6 This is a schematic diagram of the scraper mechanism structure of the utility model;

[0023] Figure 7 This is a schematic diagram of the driving mechanism structure of the utility model.

[0024] The accompanying drawings are marked as follows: 1. Sewage tank mechanism; 101. Sewage tank body; 102. Recovery tank; 103. Movable plate; 104. Outlet pipe; 105. First chute; 106. Second chute; 107. Mesh plate; 108. Through slot; 109. Third chute; 2. First transmission mechanism; 201. Mounting block; 202. Mounting plate; 203. Transmission belt; 204. Transmission wheel; 205. First driven bevel gear; 206. Mounting rod; 207. 7. Push rod; 208. Movable slot; 3. Driving mechanism; 301. Bottom plate; 302. Transmission rod; 303. First driving bevel gear; 304. Driving motor; 305. Transmission shaft; 306. Driven gear; 307. Driving gear; 308. Second driven bevel gear; 309. Second driving bevel gear; 4. Exhaust pipe; 5. Second transmission mechanism; 6. Scraper mechanism; 601. Scraper body; 602. Pressure spring; 603. Mounting slot. DETAILED DESCRIPTION

[0025] The following is combined with the attached Figure 1-7 This application is described in further detail.

[0026] The present application discloses a floor scrubber base sewage tank reinforced load-bearing drainage structure, referring to Figure 1The utility model provides a sewage tank reinforcement bearing and drainage structure for a floor washing machine base, including a sewage tank mechanism 1, and also including: a first transmission mechanism 2, a driving mechanism 3, an air outlet pipe 4, a second transmission mechanism 5 and a scraper mechanism 6. The side inner wall of the sewage tank mechanism 1 is fixedly connected to the side of the first transmission mechanism 2, the side of the driving mechanism 3 is fixedly connected to the side of the sewage tank mechanism 1, the side of the second transmission mechanism 5 is fixedly connected to the side inner wall of the sewage tank mechanism 1, the bottom end of the air outlet pipe 4 is fixedly connected to the top of the second transmission mechanism 5, and the bottom end of the first transmission mechanism 2 is fixedly connected to the top of the scraper mechanism 6. The sewage tank mechanism 1 includes a sewage tank body 101, a side of the sewage tank body 101 is fixedly connected with a water outlet pipe 104, the bottom end of the sewage tank body 101 is fixedly connected with a drain pipe, a side inner wall of the sewage tank body 101 is fixedly connected with a mesh plate 107, a through groove 108 is fixedly opened on the side of the sewage tank body 101, and a return groove 108 is fixedly connected to the side of the sewage tank body 101 corresponding to the position of the through groove 108 The top of the receiving box 102 is a concave curved surface structure. The structure of the first transmission mechanism 2 is the same as that of the second transmission mechanism 5. The side of the outlet pipe 4 is fixedly connected to the high-pressure gas cylinder through a connecting pipe. The top of the outlet pipe 4 is provided with an outlet hole. When in use, the sewage discharged by the floor scrubber passes through the outlet pipe 104 and falls on the top of the mesh plate 107. After being filtered by the mesh plate 107, the water falls into the interior of the sewage tank body 101 and is finally discharged from the drain pipe at the bottom of the sewage tank body 101. The debris remains on the top of the mesh plate 107 and is discharged through the drain pipe at the bottom of the sewage tank body 101. The driving mechanism 3 drives the first transmission mechanism 2 and the second transmission mechanism 5 to move, so that the scraper mechanism 6 reciprocates along the mesh plate 107, cleans the two ends of the debris box mesh plate 107 on the top of the mesh plate 107, and falls into the recovery box 102 through the through groove 108 for centralized treatment. At the same time, the air outlet pipe 4 reciprocates along the second slide groove 106 and sprays high-pressure gas to the mesh plate 107 to prevent the mesh of the mesh plate 107 from being blocked. At the same time, the top of the concave structure of the mesh plate 107 prevents water from flowing into the recovery box 102 at both ends of the mesh plate 107.

[0027] A third slide groove 109 is provided on the inner wall of the side of the recycling box 102, and a movable plate 103 is movably connected to the side of the third slide groove 109. A handle is fixedly connected to the side of the movable plate 103. When debris needs to be cleaned, the movable plate 103 is pulled to slide along the third slide groove 109, and the movable plate 103 is taken out to allow the debris inside the recycling box 102 to flow out.

[0028] The first transmission mechanism 2 includes a mounting block 201, the side surface of the mounting block 201 is fixedly connected to the side inner wall of the sewage tank body 101, the bottom end of the mounting block 201 is movably sleeved with a mounting rod 206, the bottom end of the mounting rod 206 is fixedly connected to the transmission wheel 204, and the side transmission of the transmission wheel 204 is connected to the transmission belt 203. The first slide groove 105 is provided on the side inner wall of the sewage tank body 101, and the side of the first slide groove 105 is movably connected to the mounting plate 202. The bottom end of the mounting plate 202 is fixedly connected to the top of the scraper mechanism 6. The second slide groove 106 is provided on the side inner wall of the sewage tank body 101 corresponding to the position of the second transmission mechanism 5. The top of the mounting plate 202 is movably connected to the bottom end of the transmission belt 203. The driving mechanism 3 drives the mounting rod 206 to rotate, so that the transmission wheel 204 drives the transmission belt 203 to move, so that the mounting plate 202 moves back and forth along the first slide groove 105, so that the scraper mechanism 6 cleans the debris on the top of the mesh plate 107.

[0029] A movable groove 208 is provided at the top of the mounting plate 202, and a push rod 207 is fixedly connected to the bottom end of the transmission belt 203. The side of the push rod 207 is movably connected to the side of the movable groove 208. The push rod 207 moves with the transmission belt 203, and the push rod 207 is stuck in the movable groove 208, thereby driving the mounting plate 202 to move. When the mounting plate 202 moves to the position of the transmission wheel 204, the push rod 207 slides along the movable groove 208 to realize the turning of the mounting plate 202.

[0030] The scraper mechanism 6 includes a scraper body 601, the top of the scraper body 601 is fixedly connected to a pressure spring 602, the bottom end of the mounting plate 202 is provided with a mounting groove 603, the top of the pressure spring 602 is fixedly connected to the top of the mounting groove 603, the bottom end of the scraper body 601 is movably connected to the top of the mesh plate 107, and the pressure spring 602 pushes the scraper body 601 downward so that the bottom end of the scraper body 601 is always close to the top of the mesh plate 107.

[0031] The driving mechanism 3 includes a bottom plate 301, the side of the bottom plate 301 is fixedly connected to the side of the sewage tank body 101, the top of the bottom plate 301 is fixedly connected to a driving motor 304, the output shaft of the driving motor 304 is fixedly connected to a driving gear 307, the top of the bottom plate 301 is movably connected to a transmission shaft 305, the top of the transmission shaft 305 is fixedly connected to a second driving bevel gear 309, the side of the transmission shaft 305 is fixedly connected to a driven gear 306, the side of the driven gear 306 and the side of the driving gear 307 are meshed with each other, the side of the sewage tank body 101 is movably connected to a transmission rod 302, the side of the transmission rod 302 is fixedly connected to the second driven bevel gear 308, the side of the second driven bevel gear 308 is meshed with the second driving bevel gear The sides of 309 are meshed with each other, the side of the transmission rod 302 is fixedly connected to the first driving bevel gear 303, the top of the mounting rod 206 is fixedly connected to the first driven bevel gear 205, the side of the first driven bevel gear 205 is meshed with the side of the first driving bevel gear 303, and the upper and lower ends of the transmission shaft 305 are installed with a second driving bevel gear 309. The driving motor 304 drives the driving gear 307 to rotate, and the driving shaft 305 is rotated through the mutual meshing of the driving gear 307 and the driven gear 306, and the transmission rod 302 is rotated through the mutual meshing of the second driving bevel gear 309 and the second driven bevel gear 308, and the mounting rod 206 is rotated through the mutual meshing of the first driving bevel gear 303 and the first driven bevel gear 205.

[0032] The implementation principle of the reinforced load-bearing drainage structure of the sewage tank of the floor scrubber base according to the embodiment of the present application is as follows: when in use, the sewage discharged by the floor scrubber falls on the top of the mesh plate 107 through the outlet pipe 104, and after being filtered by the mesh plate 107, the water falls into the interior of the sewage tank body 101 and is finally discharged from the drainage pipe at the bottom of the sewage tank body 101, and the debris remains on the top of the mesh plate 107. The driving motor 304 is started to drive the driving gear 307 to rotate, and the driving gear 307 and the driven gear 306 are engaged with each other to drive the transmission shaft 305 to rotate, and the second driving bevel gear 309 and the second driven bevel gear 308 are engaged with each other to drive the transmission rod 302 to rotate, and the first driving bevel gear 303 and the first driven bevel gear 205 are engaged with each other to drive the driving motor 304 to rotate. The mounting rod 206 rotates, causing the transmission wheel 204 to drive the transmission belt 203 to move, and the push rod 207 moves with the transmission belt 203, causing the push rod 207 to slide inside the movable groove 208 while driving the mounting plate 202 to move back and forth along the first slide groove 105, and the pressure spring 602 pushes the scraper body 601 downward so that the bottom end of the scraper body 601 is always close to the top of the mesh plate 107, so that the scraper body 601 sweeps the debris on the top of the mesh plate 107 to the two ends of the mesh plate 107, and falls into the recovery box 102 through the through groove 108. Similarly, the driving mechanism 3 drives the air outlet pipe 4 to reciprocate along the second slide groove 106 through the second transmission mechanism 5 and sprays high-pressure gas to the mesh plate 107 to prevent the mesh of the mesh plate 107 from being blocked.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A floor scrubber base sewage tank reinforced load-bearing drainage structure, comprising a sewage tank mechanism (1), characterized in that: Also includes: A first transmission mechanism (2), a driving mechanism (3), an air outlet pipe (4), a second transmission mechanism (5) and a scraper mechanism (6); the inner side wall of the sewage tank mechanism (1) is fixedly connected to the side of the first transmission mechanism (2); the side of the driving mechanism (3) is fixedly connected to the side of the sewage tank mechanism (1); the side of the second transmission mechanism (5) is fixedly connected to the inner side wall of the sewage tank mechanism (1); the bottom end of the air outlet pipe (4) is fixedly connected to the top end of the second transmission mechanism (5); the bottom end of the first transmission mechanism (2) is fixedly connected to the top end of the scraper mechanism (6); the sewage tank mechanism (1) comprises a sewage tank body (101); the sewage tank body (101) A water outlet pipe (104) is fixedly connected to the side, a drain pipe is fixedly connected to the bottom end of the sewage tank body (101), a mesh plate (107) is fixedly connected to the inner wall of the side of the sewage tank body (101), a through slot (108) is fixedly opened on the side of the sewage tank body (101), a recovery box (102) is fixedly connected to the position of the through slot (108) on the side of the sewage tank body (101), the top of the mesh plate (107) is a concave curved surface structure, the structure of the first transmission mechanism (2) is the same as that of the second transmission mechanism (5), the side of the air outlet pipe (4) is fixedly connected to a high-pressure gas cylinder through a connecting pipe, and the top of the air outlet pipe (4) is provided with an air outlet hole.

2. The enhanced load-bearing and drainage structure of a sewage tank at a floor scrubber base according to claim 1, characterized in that: A third chute (109) is provided on the inner side wall of the recycling box (102), the side of the third chute (109) is movably connected to a movable plate (103), and the side of the movable plate (103) is fixedly connected to a handle.

3. The reinforced load-bearing and drainage structure of a floor scrubber base sewage tank according to claim 1, characterized in that: The first transmission mechanism (2) comprises a mounting block (201), the side of the mounting block (201) is fixedly connected to the inner wall of the side of the sewage tank body (101), the bottom end of the mounting block (201) is movably sleeved with a mounting rod (206), the bottom end of the mounting rod (206) is fixedly connected to a transmission wheel (204), the side of the transmission wheel (204) is transmission-connected with a transmission belt (203), a first chute (105) is provided on the inner wall of the side of the sewage tank body (101), the side of the first chute (105) is movably connected to a mounting plate (202), the bottom end of the mounting plate (202) is fixedly connected to the top end of the scraper mechanism (6), a second chute (106) is provided on the inner wall of the side of the sewage tank body (101) corresponding to the position of the second transmission mechanism (5), and the top end of the mounting plate (202) is movably connected to the bottom end of the transmission belt (203).

4. The reinforced load-bearing and drainage structure of a floor scrubber base sewage tank according to claim 3, characterized in that: The top end of the mounting plate (202) is provided with a movable groove (208), the bottom end of the transmission belt (203) is fixedly connected with a push rod (207), and the side surface of the push rod (207) is movably connected to the side surface of the movable groove (208).

5. The reinforced load-bearing and drainage structure of a floor scrubber base sewage tank according to claim 3, characterized in that: The scraper mechanism (6) comprises a scraper body (601), the top end of the scraper body (601) is fixedly connected to a pressure spring (602), the bottom end of the mounting plate (202) is provided with a mounting groove (603), the top end of the pressure spring (602) is fixedly connected to the top end of the mounting groove (603), and the bottom end of the scraper body (601) is movably connected to the top end of the mesh plate (107).

6. The reinforced load-bearing and drainage structure of a floor scrubber base sewage tank according to claim 3, characterized in that: The driving mechanism (3) comprises a bottom plate (301), the side of the bottom plate (301) is fixedly connected to the side of the sewage tank body (101), the top of the bottom plate (301) is fixedly connected to a driving motor (304), the output shaft of the driving motor (304) is fixedly connected to a driving gear (307), the top of the bottom plate (301) is movably sleeved with a transmission shaft (305), the top of the transmission shaft (305) is fixedly connected to a second driving bevel gear (309), the side of the transmission shaft (305) is fixedly sleeved with a driven gear (306), the side of the driven gear (306) is rotatably sleeved with the driving gear (307), and the top of the transmission shaft (305) is fixedly connected to a second driving bevel gear (309). The sides of the second driven bevel gear (307) are meshed with each other, the side of the sewage tank body (101) is movably connected to the transmission rod (302), the side of the transmission rod (302) is fixedly connected to the second driven bevel gear (308), the side of the second driven bevel gear (308) and the side of the second driving bevel gear (309) are meshed with each other, the side of the transmission rod (302) is fixedly connected to the first driving bevel gear (303), the top end of the mounting rod (206) is fixedly connected to the first driven bevel gear (205), and the side of the first driven bevel gear (205) and the side of the first driving bevel gear (303) are meshed with each other.