A leak-proof, zero-direct-discharge, high-efficiency rainwater and sewage diversion pipe for hospitals

By introducing rainfall detection and water level monitoring structures into the stormwater and sewage pipes, the drainage volume is dynamically adjusted and automatic discharge is performed in emergencies, solving the leakage and mixing problems during heavy rainfall and improving the adaptability and safety of the drainage system.

CN122129076APending Publication Date: 2026-06-02ZHEJIANG CHANG YI CONSTR CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG CHANG YI CONSTR CO LTD
Filing Date
2026-02-03
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing discharge devices may cause leakage of harmful medical wastewater during periods of heavy rainfall, cannot dynamically adjust the discharge volume, easily cause rainwater and sewage to mix, lack water level monitoring and emergency discharge functions, and pose an overflow risk.

Method used

A leak-proof, zero-direct-discharge, high-efficiency diversion rainwater and sewage pipe was designed, which includes a rainfall detection device, a water level monitoring structure, and an emergency discharge structure. The drainage volume is dynamically adjusted by the rainfall detection device, the water level is monitored in real time by the water level monitoring structure, and the emergency discharge is automatically activated in the event of heavy rain or blockage, so as to ensure the separation and safe discharge of rainwater and sewage.

Benefits of technology

It enables dynamic adjustment of drainage volume based on real-time rainfall, avoids mixing of rainwater and sewage, enhances the system's adaptability and safety, prevents leakage of harmful sewage, and is suitable for places with high environmental safety requirements.

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Abstract

This invention discloses a high-efficiency, leak-proof, zero-direct-discharge, and separate rainwater and sewage pipe for hospitals, relating to the field of drainage engineering technology. It includes a sewage discharge device and a rainfall detection device mounted on the upper end of the sewage discharge device. The sewage discharge device is equipped with a sealed chamber and a discharge chamber. The sealed chamber contains a drainage volume control structure, and the sewage discharge device itself contains a water level monitoring structure and an emergency discharge structure. One end of the sewage discharge device is fixedly connected to an inlet pipe, and the end of the sewage discharge device away from the inlet pipe is fixedly connected to a rainwater drainage pipe. Sewage drainage pipes are fixedly connected to both sides of the sewage discharge device. This high-efficiency, leak-proof, zero-direct-discharge, and separate rainwater and sewage pipe for hospitals, through the coordination of the rainfall detection device and the drainage volume control structure, can dynamically adjust the drainage volume according to real-time rainfall, effectively avoiding the mixing problem of rainwater and sewage mentioned in the background art, achieving efficient separation, and thus improving the adaptability and efficiency of the drainage system.
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Description

Technical Field

[0001] This invention relates to the field of drainage engineering, and in particular to a high-efficiency, leak-proof, zero-direct-discharge, and separate stormwater and sewage pipe for use in hospitals. Background Technology

[0002] Separate drainage of rainwater and sewage is an urban drainage system that separates rainwater and sewage, each using its own pipeline for transportation, discharge, or subsequent treatment.

[0003] Rainwater is discharged directly into rivers through rainwater pipe networks, or used for landscaping and municipal water use after natural sedimentation. Sewage, on the other hand, must be collected through sewage pipe networks and sent to sewage treatment plants for purification. Only after the water quality meets national or local standards can it be discharged into rivers. This diversion method can effectively prevent sewage from polluting natural water bodies, reduce the flow impact on sewage treatment plants, and improve the efficiency of water resource recycling.

[0004] Current discharge systems may leak hazardous medical wastewater during heavy rainfall, contaminating soil or groundwater. They cannot dynamically adjust drainage volume based on real-time rainfall, easily causing rainwater and wastewater to mix. Furthermore, the system lacks water level monitoring and emergency discharge capabilities, making it unable to respond promptly to heavy rain or pipe blockages, posing a risk of overflow. Summary of the Invention

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-efficiency, leak-proof, zero-direct-discharge diversion rainwater and sewage pipe for hospitals, including a sewage discharge device and a rainfall detection device installed at the upper end of the sewage discharge device. The sewage discharge device is provided with a sealed chamber and a discharge chamber respectively. The sealed chamber is provided with a drainage volume control structure. The sewage discharge device is provided with a water level monitoring structure and an emergency discharge structure. One end of the sewage discharge device is fixedly connected to a water inlet pipe, the end of the sewage discharge device away from the water inlet pipe is fixedly connected to a rainwater drainage pipe, both sides of the sewage discharge device are fixedly connected to sewage drainage pipes, and the bottom end of the sewage discharge device is fixedly connected to an emergency discharge pipe.

[0006] Preferably, the water level monitoring structure includes longitudinal guide rods symmetrically fixed inside the sewage discharge device, a limit block is fixedly connected to the top of the longitudinal guide rod, an L-shaped lifting baffle is slidably arranged on the surface of the longitudinal guide rod, and an airbag is fixedly connected to the top of the L-shaped lifting baffle.

[0007] Preferably, there are two sets of water level monitoring structures, which are symmetrically arranged on both sides of the inner wall of the sewage discharge device. The surface of the longitudinal guide rod is provided with two limit switches, and the two limit switches are set at different heights.

[0008] Preferably, the L-shaped lifting baffle is located below the sewage drain pipe, the L-shaped lifting baffle is in close contact with the inner wall of the sewage discharge device, and the inner wall of the sewage discharge device is symmetrically provided with guide grooves.

[0009] Preferably, the emergency discharge structure includes a lifting rod slidably disposed inside the guide groove, a pull rod fixedly connected to the bottom surface of the lifting rod, and a cap fixedly connected to the end of the pull rod away from the lifting rod, the cap being inserted into the interior of the emergency discharge pipe.

[0010] Preferably, the sewage discharge device has two partitions symmetrically fixedly connected inside, which divide the interior of the sewage discharge device into three spaces, including a sealed chamber and a discharge chamber.

[0011] Preferably, the drainage control structure includes a positioning tube fixedly disposed on the surface of the partition, and positioning tubes are fixedly connected to the sides of the two partitions that are close to each other. A transverse guide rod is fixedly connected inside the partition, and the transverse guide rod is arranged in a ring array around the outer circle of the positioning tube.

[0012] Preferably, a sliding sleeve is slidably disposed on the surface of one of the positioning tubes, a displacement control hose is fixedly connected to the surface of the sliding sleeve, a first fixing ring is fixedly connected to the surface of the displacement control hose, a connecting seat is fixedly connected to the surface of the first fixing ring in a ring array, the connecting seat is slidably disposed on the surface of the transverse guide rod, a spacer ring is fixedly connected to the surface of the transverse guide rod, and a return spring is sleeved on the surface of the transverse guide rod, with both ends of the return spring fixedly connected to the connecting seat and the spacer ring respectively.

[0013] Preferably, a transverse guide rod is rotatably provided on the surface of another positioning tube, the end of the discharge control hose away from the sliding sleeve is fixedly connected to the rotating sleeve, a second fixing ring is fixedly connected to the surface of the rotating sleeve, and the discharge control hose is located in the middle of the rotating sleeve and the water inlet pipe.

[0014] Preferably, a planetary gear is fixedly connected to the surface of the rotating sleeve, a waterproof motor is fixedly connected to the surface of the partition, a drive shaft is rotatably connected to the output end of the waterproof motor, a drive gear is fixedly connected to the surface of the drive shaft, and the drive gear meshes with the planetary gear.

[0015] In summary, this invention provides a high-efficiency, leak-proof, zero-direct-discharge diversion rainwater and sewage pipe for hospitals, which has the following beneficial effects: 1. The hospital uses a leak-proof, zero-direct-discharge, high-efficiency diversion rainwater and sewage pipe system. By combining a rainfall detection device and a drainage volume control structure, the drainage volume can be dynamically adjusted according to real-time rainfall, effectively avoiding the problem of rainwater and sewage mixing mentioned in the background technology, achieving high-efficiency diversion, and thus improving the adaptability and efficiency of the drainage system.

[0016] 2. The hospital uses a leak-proof, zero-direct-discharge, high-efficiency diversion rainwater and sewage pipe. By setting up a water level monitoring structure, the pipe has a built-in water level monitoring structure and an emergency discharge structure, which can monitor the water level in the pipe in real time and automatically start emergency discharge in case of heavy rain or blockage, preventing the risk of overflow and enhancing the safety and emergency response capabilities of the system.

[0017] 3. The hospital adopts a high-efficiency, leak-proof, zero-direct-discharge diversion rainwater and sewage pipeline. Through the design of sealed chambers and discharge chambers, the pipeline ensures leak-proof and zero-direct-discharge characteristics, directly solving the problem of harmful medical sewage leakage polluting the soil or groundwater in the background technology. It is particularly suitable for hospitals and other places with high environmental safety requirements, ensuring ecological safety. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the sewage discharge device of the present invention; Figure 3 This is a schematic diagram of the overall internal structure of the sewage discharge device of the present invention; Figure 4 This is a schematic diagram of the drainage control structure of the present invention; Figure 5 This is a schematic diagram of the emergency discharge structure of the present invention; Figure 6 This is a schematic diagram of the drainage control structure of the present invention; Figure 7 This is a partial structural diagram of the drainage control structure of the present invention; Figure 8 This is a schematic diagram of the internal structure of the drainage control structure of the present invention.

[0019] Explanation of reference numerals in the attached figures: 1. Sewage discharge device; 2. Rainfall detection device; 3. Inlet pipe; 4. Rainwater drainage pipe; 5. Sewage drainage pipe; 6. Emergency discharge pipe; 7. Water level monitoring structure; 8. Discharge volume control structure; 9. Emergency discharge structure; 10. Sealed chamber; 11. Discharge chamber; 12. Longitudinal guide rod; 13. L-shaped lifting baffle; 14. Airbag; 15. Limit block; 16. Limit switch; 17. Guide groove; 18. Lifting rod; 19. Pull rod; 20. Cover; 21. Partition plate; 22. Positioning tube; 23. Transverse guide rod; 24. Sliding sleeve; 25. Discharge volume control hose; 26. First fixing ring; 27. Connecting seat; 28. Spacer ring; 29. ​​Return spring; 30. Rotating sleeve; 31. Second fixing ring; 32. Planetary gear; 33. Waterproof motor; 34. Drive shaft; 35. Drive gear. Detailed Implementation

[0020] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings.

[0021] Please see Figures 1-3 A high-efficiency, leak-proof, zero-direct-discharge rainwater and sewage diversion pipe for hospitals includes a sewage discharge device 1 and a rainfall detection device 2 installed at the upper end of the sewage discharge device 1. The sewage discharge device 1 is respectively provided with a sealed chamber 10 and a discharge chamber 11. The sealed chamber 10 is provided with a drainage volume control structure 8. The sewage discharge device 1 is provided with a water level monitoring structure 7 and an emergency discharge structure 9. One end of the sewage discharge device 1 is fixedly connected to a water inlet pipe 3, the other end of the sewage discharge device 1 away from the water inlet pipe 3 is fixedly connected to a rainwater drainage pipe 4, both sides of the sewage discharge device 1 are fixedly connected to sewage drainage pipes 5, and the bottom end of the sewage discharge device 1 is fixedly connected to an emergency discharge pipe 6. The sealed chamber 10 and the discharge chamber 11 are separated by a partition 21 to ensure that rainwater and sewage flow in isolation inside, avoiding cross-contamination. The inlet pipe 3 is connected to the external drainage network, the rainwater drainage pipe 4 and the sewage drainage pipe 5 are used to discharge rainwater and sewage respectively, and the emergency discharge pipe 6 provides a backup outlet when the water level exceeds the limit.

[0022] Please see Figure 4 The water level monitoring structure 7 includes longitudinal guide rods 12 symmetrically fixed inside the sewage discharge device 1. A limit block 15 is fixedly connected to the top of the longitudinal guide rods 12. An L-shaped lifting baffle 13 is slidably arranged on the surface of the longitudinal guide rods 12. An airbag 14 is fixedly connected to the top of the L-shaped lifting baffle 13. When the water level rises, the airbag 14 is pushed by buoyancy to slide the L-shaped lifting baffle 13 along the longitudinal guide rod 12, while the limiting block 15 prevents the baffle from rising excessively.

[0023] Please see Figure 4 There are two sets of water level monitoring structures 7, which are symmetrically arranged on both sides of the inner wall of the sewage discharge device 1. Two limit switches 16 are provided on the surface of the longitudinal guide rod 12, and the limit switches 16 are set at different heights. The limit switch has two-stage triggering. The first stage activates drainage control at medium water levels, and the second stage activates emergency discharge at high water levels.

[0024] Please see Figures 4-5 The L-shaped lifting baffle 13 is located below the sewage drain pipe 5. The L-shaped lifting baffle 13 is in close contact with the inner wall of the sewage discharge device 1. The inner wall of the sewage discharge device 1 is symmetrically provided with guide grooves 17. The L-shaped lifting baffle 13 is initially positioned lower than the sewage drain pipe 5 to ensure normal sewage discharge. Its design, which is tightly fitted to the inner wall, forms a sealed interface to prevent water bypass.

[0025] Please see Figure 5The emergency discharge structure 9 includes a lifting rod 18 that is slidably disposed inside the guide groove 17. A pull rod 19 is fixedly connected to the bottom surface of the lifting rod 18. A cover 20 is fixedly connected to the end of the pull rod 19 away from the lifting rod 18. The cover 20 is inserted into the interior of the emergency discharge pipe 6. When the L-shaped lifting baffle 13 rises to its limit, it pushes the lifting rod 18 to slide up along the guide groove 17, and pulls up the cover 20 through the pull rod 19, thereby opening the emergency discharge pipe 6. This linkage design ensures automatic pressure relief in case of heavy rain or blockage, and avoids pipe bursting or overflow.

[0026] Please see Figure 2 The sewage discharge device 1 has two partitions 21 that are symmetrically fixedly connected inside. The two partitions 21 divide the interior of the sewage discharge device 1 into three spaces, including a sealed chamber 10 and a discharge chamber 11.

[0027] Please see Figure 6 The drainage control structure 8 includes a positioning tube 22 fixedly installed on the surface of the partition 21. The two partitions 21 are respectively fixedly connected to the side of each other. A transverse guide rod 23 is fixedly connected inside the partition 21. The transverse guide rod 23 is arranged in a ring array around the outer ring of the positioning tube 22. The positioning tube 22 and the transverse guide rod 23 form the support frame of the displacement control hose 25. The annular array of guide rods ensures uniform hose deformation, while the positioning tube 22 provides an axial reference.

[0028] Please see Figures 6-8 One of the positioning tubes 22 has a sliding sleeve 24 slidably disposed on its surface. A displacement control hose 25 is fixedly connected to the surface of the sliding sleeve 24. A first fixing ring 26 is fixedly connected to the surface of the displacement control hose 25. A connecting seat 27 is fixedly connected to the surface of the first fixing ring 26 in a ring array. The connecting seat 27 is slidably disposed on the surface of the transverse guide rod 23. A spacer ring 28 is fixedly connected to the surface of the transverse guide rod 23. A return spring 29 is sleeved on the surface of the transverse guide rod 23. The two ends of the return spring 29 are fixedly connected to the connecting seat 27 and the spacer ring 28, respectively. When the rainfall increases, the waterproof motor 33 drives the hose to twist, the connecting seat 27 slides along the transverse guide rod 23, and the compression return spring 29 is used to store energy. When rainfall decreases, the spring returns to its original position, pushing the hose back to its original shape. This flexible design ensures continuous adjustment of drainage volume and avoids water hammer effects.

[0029] Please see Figure 7 Another positioning tube 22 has a transverse guide rod 23 rotatably mounted on its surface. The end of the discharge control hose 25 away from the sliding sleeve 24 is fixedly connected to the rotating sleeve 30. The surface of the rotating sleeve 30 is fixedly connected to a second fixing ring 31. The discharge control hose 25 is located in the middle of the rotating sleeve 30 and the water inlet pipe 3. The rotating sleeve 30 is fixed to the hose via the second fixing ring 31, forming a rotating joint. Under the drive of the motor, the rotating sleeve 30 causes the hose to twist, changing its curvature and diameter.

[0030] Please see Figure 8 A planetary gear 32 is fixedly connected to the surface of the rotating sleeve 30, and a waterproof motor 33 is fixedly connected to the surface of the partition 21. A drive shaft 34 is rotatably connected to the output end of the waterproof motor 33, and a drive gear 35 is fixedly connected to the surface of the drive shaft 34. The drive gear 35 meshes with the planetary gear 32.

[0031] When the device is in use, after the inlet pipe 3 is connected to the drainage network, the rain detection device 2 can monitor whether it is raining. If it is not raining, it proves that the water flow is sewage discharge. After the water flows into the sewage discharge device 1 through the inlet pipe 3, it is first discharged through the sewage discharge pipe 5. If it rains and the rainfall increases, the airbag 14 will cause the L-shaped lifting baffle 13 to slide upward on the surface of the longitudinal guide rod 12. While the L-shaped lifting baffle 13 slides, it will block the sewage drain pipe 5 and touch the first limit switch 16. At this time, the waterproof motor 33 will drive the drive shaft 34 to drive the drive gear 35 to rotate. While the drive gear 35 rotates, it will drive the planetary gear 32. While the planetary gear 32 rotates, it will drive one end of the discharge control hose 25 to rotate through the rotating sleeve 30 and the second fixed ring 31. When one end of the discharge control hose 25 rotates, the other end remains stationary. The rotation of the discharge control hose 25 will cause the middle part to be twisted. After the middle part of the discharge control hose 25 is tightened, the inner diameter of the internal passage will be reduced, thereby achieving the purpose of flow control. Since the discharge control hose 25 itself is an elastic material, it can be allowed to undergo a certain degree of deformation. Since the discharge control hose 25 is made of soft material, the return spring 29 pushes the sliding sleeve 24 to slide on the surface of the positioning tube 22, thereby opening the center of the discharge control hose 25. After the discharge control hose 25 is opened, rainwater is discharged from the inside of the discharge control hose 25 to the rainwater drain pipe 4. The L-shaped lifting baffle 13 rises and blocks the sewage drain pipe 5, thereby preventing rainwater from entering the inside of the sewage drain pipe 5. If the rainfall continues to increase, the airbag 14 will cause the L-shaped lifting baffle 13 to continue to rise and touch the second limit switch 16. At this time, the waterproof motor 33 will drive the drive gear 35 to drive the planetary gear 32 to continue to rotate, so that the discharge control hose 25 is opened to the maximum. At the same time, the L-shaped lifting baffle 13 stops blocking the sewage drain pipe 5. At this time, the sewage drain pipe 5 and the water inlet pipe 3 discharge rainwater at full flow. If the water level inside the sewage discharge device 1 is still increasing, the L-shaped lifting baffle 13 will continue to rise. At this time, the L-shaped lifting baffle 13 will push the lifting rod 18 to slide upward inside the guide groove 17. While the lifting rod 18 is sliding, the cover 20 is pulled up through the pull rod 19, thereby opening the emergency discharge pipe 6 and discharging at full flow.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A leak-proof, zero-direct-discharge, high-efficiency diversion rainwater and sewage pipe for hospitals, comprising a sewage discharge device (1), characterized in that: It also includes a rainfall detection device (2) installed at the upper end of the sewage discharge device (1). The sewage discharge device (1) is respectively provided with a sealed chamber (10) and a discharge chamber (11). The sealed chamber (10) is provided with a drainage volume control structure (8). The sewage discharge device (1) is provided with a water level monitoring structure (7) and an emergency discharge structure (9). One end of the sewage discharge device (1) is fixedly connected to a water inlet pipe (3), the other end of the sewage discharge device (1) away from the water inlet pipe (3) is fixedly connected to a rainwater drainage pipe (4), both sides of the sewage discharge device (1) are fixedly connected to sewage drainage pipes (5), and the bottom end of the sewage discharge device (1) is fixedly connected to an emergency discharge pipe (6).

2. The hospital-use leak-proof, zero-direct-discharge, high-efficiency diversion rainwater and sewage pipe according to claim 1, characterized in that: The water level monitoring structure (7) includes longitudinal guide rods (12) symmetrically fixed inside the sewage discharge device (1). A limit block (15) is fixedly connected to the top of the longitudinal guide rod (12). An L-shaped lifting baffle (13) is slidably arranged on the surface of the longitudinal guide rod (12). An airbag (14) is fixedly connected to the top of the L-shaped lifting baffle (13).

3. The hospital-use leak-proof, zero-direct-discharge, high-efficiency diversion rainwater and sewage pipe according to claim 2, characterized in that: The number of water level monitoring structures (7) is two sets, which are symmetrically arranged on both sides of the inner wall of the sewage discharge device (1). The surface of the longitudinal guide rod (12) is provided with two limit switches (16), and the two limit switches (16) are set at different heights.

4. The hospital-use leak-proof, zero-direct-discharge, high-efficiency diversion rainwater and sewage pipe according to claim 3, characterized in that: The L-shaped lifting baffle (13) is located below the sewage drain pipe (5). The L-shaped lifting baffle (13) is in close contact with the inner wall of the sewage discharge device (1). The inner wall of the sewage discharge device (1) is symmetrically provided with guide grooves (17).

5. A high-efficiency, leak-proof, zero-direct-discharge, diverting rainwater and sewage pipe for hospitals according to claim 4, characterized in that: The emergency discharge structure (9) includes a lifting rod (18) that is slidably disposed inside the guide groove (17). A pull rod (19) is fixedly connected to the bottom surface of the lifting rod (18). A cover (20) is fixedly connected to the end of the pull rod (19) away from the lifting rod (18). The cover (20) is inserted into the interior of the emergency discharge pipe (6).

6. A high-efficiency, leak-proof, zero-direct-discharge, diverting rainwater and sewage pipe for hospitals according to claim 5, characterized in that: The sewage discharge device (1) has two partitions (21) symmetrically fixedly connected inside. The two partitions (21) divide the interior of the sewage discharge device (1) into three spaces, including a sealed chamber (10) and a discharge chamber (11).

7. A high-efficiency, leak-proof, zero-direct-discharge, diverting rainwater and sewage pipe for hospitals according to claim 6, characterized in that: The drainage control structure (8) includes a positioning tube (22) fixedly installed on the surface of the partition (21). The two partitions (21) are respectively fixedly connected to the side of each other. A transverse guide rod (23) is fixedly connected inside the partition (21). The transverse guide rod (23) is arranged in a ring array around the outer ring of the positioning tube (22).

8. A high-efficiency, leak-proof, zero-direct-discharge, diverting rainwater and sewage pipe for hospitals according to claim 7, characterized in that: A sliding sleeve (24) is slidably disposed on the surface of one of the positioning tubes (22). A displacement control hose (25) is fixedly connected to the surface of the sliding sleeve (24). A first fixing ring (26) is fixedly connected to the surface of the displacement control hose (25). A connecting seat (27) is fixedly connected to the surface of the first fixing ring (26) in a ring array. The connecting seat (27) is slidably disposed on the surface of the transverse guide rod (23). A spacer ring (28) is fixedly connected to the surface of the transverse guide rod (23). A return spring (29) is sleeved on the surface of the transverse guide rod (23). The two ends of the return spring (29) are fixedly connected to the connecting seat (27) and the spacer ring (28) respectively.

9. A high-efficiency, leak-proof, zero-direct-discharge, diverting rainwater and sewage pipe for hospitals according to claim 8, characterized in that: Another positioning tube (22) has a transverse guide rod (23) rotatably mounted on its surface. The end of the discharge control hose (25) away from the sliding sleeve (24) is fixedly connected to the rotating sleeve (30). The surface of the rotating sleeve (30) is fixedly connected to a second fixing ring (31). The discharge control hose (25) is located in the middle of the rotating sleeve (30) and the water inlet pipe (3).

10. A high-efficiency, leak-proof, zero-direct-discharge, diverting rainwater and sewage pipe for hospitals according to claim 9, characterized in that: A planetary gear (32) is fixedly connected to the surface of the rotating sleeve (30), a waterproof motor (33) is fixedly connected to the surface of the partition (21), a drive shaft (34) is rotatably connected to the output end of the waterproof motor (33), a drive gear (35) is fixedly connected to the surface of the drive shaft (34), and the drive gear (35) meshes with the planetary gear (32).