A cable waterproof quick connection structure water pump

Abstract

This utility model belongs to the field of water pump technology, specifically referring to a water pump with a waterproof quick-connect cable structure. It includes a cable, a motor housing, an upper bearing seat, and a top cover. A control board mounted on the upper bearing seat is located inside the top cover. The cable includes multiple conductors, each covered with an insulation layer to form a core. These cores are then covered with a protective layer to form a cable. A rubber sheath extends through the top of the top cover, with a large hole at its upper end for installing the cable and multiple small holes in its middle for installing the cores. A conductor is located at the lower end of the rubber sheath, with an insertion hole at its upper end for inserting the conductor. A gap exists between the lower surface of the conductor and the inner end face of the insertion hole to form a liquid storage tank. A second conductor is located on the control board, with its lower end extending out of the rubber sheath and interlocking with it. The rubber sheath is formed by vulcanization around the cable, cores, and conductor. This utility model effectively reduces the risk of pump burn-out and extends the service life of the water pump.

Description

Technical Field

[0001] This utility model belongs to the field of water pump technology, and specifically refers to a water pump with a waterproof quick-connect cable structure. Background Technology

[0002] Submersible permanent magnet submersible pumps are typically connected to an external power source via cables. In existing submersible pumps, the cables usually pass through the top cover and are electrically connected to a control board located below the top cover. When the cable's protective layer is damaged, water can enter the pump through the gaps between the cable's insulation layers. When both the cable's protective layer and insulation layer are damaged, water can flow into the pump through the gaps between the insulation layer and the conductor, leading to pump burn-out and a short pump lifespan. Utility Model Content

[0003] The purpose of this invention is to provide a water pump with a waterproof quick-connect cable structure, which can effectively reduce the risk of burn-out and improve the service life of the water pump.

[0004] This utility model is implemented as follows: A water pump with a waterproof quick-connect cable structure includes a cable, a motor housing, an upper bearing seat located on the upper end of the motor housing, and a top cover pressed onto the upper bearing seat. The top cover is hollow and open at the lower end. A control board mounted on the upper bearing seat is located inside the top cover. The cable includes multiple conductors, each conductor covered with an insulation layer to form a core. The multiple cores are covered with a protective layer to form a cable. A rubber sheath is provided through the upper end of the top cover. The upper end of the rubber sheath has a large hole for installing the cable, and the middle of the rubber sheath has multiple small holes for installing the cores. The lower end of the rubber sheath has a conductor I with a number and position adapted to the conductors. The upper end of the conductor I has a socket I for inserting the conductor. A gap is left between the lower surface of the conductor and the inner end face of the socket I to form a liquid storage tank. The control board has a conductor II with a number and position adapted to the conductor I. The lower end of the conductor extends out of the rubber sheath and is inserted into the conductor II. The rubber sheath is formed by vulcanization on the outside of the cable, cores, and conductor I.

[0005] In the water pump with a waterproof quick-connect cable structure described above, the control board is fixedly mounted on the upper bearing seat by screws.

[0006] In the water pump with the aforementioned waterproof quick-connect cable structure, the depth L1 of the large hole is greater than 20mm.

[0007] In the water pump with a waterproof quick-connect cable structure described above, the top cover is installed on the oil chamber by a long screw. The top cover has an installation flange on its outer periphery, and the rod of the long screw passes through the installation flange and is screwed into the oil chamber.

[0008] In the water pump with the above-mentioned waterproof quick-connect cable structure, the outer wall of the rubber sheath protrudes outward to form an mounting boss, the top cover is provided with a limiting boss for lowering the mounting boss, and a handle is detachably installed on the top cover, with a pressing boss at the lower end of the handle for pressing against the mounting boss.

[0009] In the water pump with a waterproof quick-connect cable structure described above, the detachable connection between the handle and the top cover can be as follows: the handle is fixedly installed on the top cover by screws, and the shank of the screw passes through the handle and is screwed to the top cover.

[0010] In the water pump with the aforementioned waterproof quick-connect cable structure, the top cover is provided with an installation platform, the rubber sheath is installed through the installation platform, and the shank of the screw passes through the handle and is screwed to the installation platform.

[0011] In the water pump with the aforementioned waterproof quick-connect cable structure, the detachable connection between the handle and the top cover can also be achieved by the handle being detachably connected to the top cover via a locking block and a locking groove.

[0012] In the water pump with a waterproof quick-connect cable structure described above, the handle is circular, and the middle of the handle is provided with a through hole for the rubber sheath to extend into.

[0013] In the water pump with the above-mentioned waterproof quick-connect cable structure, the diameter of the first socket is 1.1 to 1.3 times the conductor diameter, and the wall thickness of the first socket is greater than 0.8 mm.

[0014] In the water pump with a waterproof quick-connect cable structure described above, the outer side wall of the first conductor has an annular boss embedded in the rubber sheath, and the annular boss and the rubber sheath form a labyrinth seal structure.

[0015] In the water pump with the aforementioned waterproof quick-connect cable structure, there are two or more annular bosses.

[0016] In the water pump with the aforementioned waterproof quick-connect cable structure, the width of the annular boss is greater than 2mm.

[0017] In the water pump with the aforementioned waterproof quick-connect cable structure, the distance between the outer walls of each conductor is greater than 2mm.

[0018] In the water pump with a waterproof quick-connect cable structure described above, the upper end of the conductor is provided with a second insertion hole, and the lower end of the conductor is a plug rod that is inserted into the second insertion hole, and the plug rod is tightly fitted with the second insertion hole.

[0019] In the water pump with the aforementioned waterproof quick-connect cable structure, the diameter of the plug is calculated based on 1.5 times the maximum allowable current of the water pump to determine the overcurrent area. The top of the plug is chamfered to facilitate installation into the second socket 16.

[0020] In the water pump with a waterproof quick-connect cable structure described above, the lower end of the second conductor is provided with a welding rod for welding. The welding rod is inserted into the control board and fixed to the control board by welding.

[0021] In the water pump with the aforementioned waterproof quick-connect cable structure, the first conductor is circumferentially distributed, and correspondingly, the second conductor is circumferentially distributed, and the second conductor and the control board form a control board assembly.

[0022] In the water pump with a waterproof quick-connect cable structure described above, the upper surface of the upper bearing seat protrudes to form an assembly boss, the lower end of the top cover is fitted over the assembly boss, the inner side wall of the top cover is recessed to form an annular groove, and an O-ring fitted over the assembly boss is provided in the annular groove.

[0023] In the water pump with a waterproof quick-connect cable structure described above, the materials of conductor one and conductor two are copper, aluminum or silver.

[0024] The outstanding advantages of this utility model compared to the prior art are: 1. This utility model inserts the conductor of the cable into the first socket of the first conductor. The rubber sheath is formed by vulcanization on the outside of the cable, the core, and the first conductor. When the protective layer of the cable is damaged, water is stopped above the inner end face of the large hole in the rubber sheath, effectively preventing water from entering the top cover. When both the protective layer and the insulation layer of the cable are damaged, water enters the first socket through the conductor and is stored in the liquid storage tank, preventing it from further flowing into the top cover, effectively reducing the risk of burn-out and improving the service life of the water pump. The first conductor and the second conductor of this utility model are plugged in, making cable installation and connection convenient and improving installation efficiency. At the same time, it can prevent incorrect cable wiring, which would lead to rework.

[0025] 2. The outer wall of the rubber sheath of this utility model protrudes outward to form a mounting boss. The top cover is provided with a limiting boss that limits the lower position of the mounting boss. A handle is detachably installed on the top cover. The lower end of the handle is provided with a pressing boss for pressing against the mounting boss. During maintenance, only the handle needs to be removed to quickly replace the cable without disassembling the top cover, which can prevent damage to the seal between the top cover and the upper bearing seat and facilitate maintenance. At the same time, the handle can be used to carry and move the water pump and also has the function of pressing the seal. Attached Figure Description

[0026] Figure 1 This is a partial sectional view of the present invention.

[0027] Figure 2 This is a cross-sectional view of the cable, rubber sheath, and conductor of this utility model.

[0028] Figure 3This is a cross-sectional view of the conductor of this utility model.

[0029] Figure 4 This is a perspective view of the control board and the second conductor of this utility model.

[0030] Figure 5 This is a cross-sectional view of the second conductive material of this utility model.

[0031] Figure 6 This is a cross-sectional view of the top cover of this utility model.

[0032] Figure 7 This is a perspective view of the top cover of this utility model.

[0033] Figure 8 This is a cross-sectional view of the handle of this utility model.

[0034] Figure 9 This is a perspective view of the handle of this utility model.

[0035] Reference numerals: 1. Cable; 1a. Conductor; 1b. Core; 2. Motor housing; 3. Upper bearing housing; 4. Top cover; 5. Control board; 6. Rubber sheath; 7. Conductor one; 8. Socket one; 9. Liquid reservoir; 10. Conductor two; 11. Mounting boss; 12. Limiting boss; 13. Handle; 14. Clamping boss; 15. Annular boss; 16. Socket two; 17. Insert rod; 18. Welding rod; 19. Assembly boss; 20. O-ring; 21. Long screw; 22. Oil chamber; 23. Mounting flange; 24. Mounting platform; 25. Through hole. Detailed Implementation

[0036] The present invention will be further described below with reference to specific embodiments. See also: Figure 1 —9: A water pump with a waterproof quick-connect cable structure includes a cable 1, a motor housing 2, an upper bearing seat 3 disposed on the upper end of the motor housing 2, and a top cover 4 pressed onto the upper bearing seat 3. The top cover 4 is hollow and open at the lower end. A control board 5 mounted on the upper bearing seat 3 is disposed inside the top cover 4. The cable 1 includes multiple conductors 1a, each conductor 1a is covered with an insulation layer to form a wire core 1b, and the multiple wire cores 1b are covered with a protective layer to form a cable. A rubber sheath 6 is provided through the upper end of the top cover 4, and the upper end of the rubber sheath 6 has a large hole for installing the cable 1. The sheath 6 has multiple small holes in the middle for installing the wire core 1b. The lower end of the rubber sheath 6 has conductors 7 in number and position that match the conductor 1a. The upper end of the conductor 7 has a socket 8 for inserting the conductor 1a. A gap is left between the lower surface of the conductor 1a and the inner end face of the socket 8 to form a liquid storage tank 9. The control board 5 has conductors 10 in number and position that match the conductors 7. The lower end of the conductor 7 extends out of the rubber sheath 6 and is inserted into the conductor 10. The rubber sheath 6 is formed by vulcanization outside the cable 1, the wire core 1b and the conductor 7.

[0037] The installation process of the cable 1 and rubber sheath 6 of this utility model is as follows: Figure 1-9 As shown, the outer protective layer of cable 1 is stripped by 15-20mm to expose the core 1b. Then, the insulation layer of each core 1b is stripped by 5-8mm to expose the conductor 1a. Next, the conductor 1a is inserted into the corresponding socket 8 of the conductor 7. The conductor 1a is pressed tightly using a terminal crimping machine, and it is not allowed to come loose. Finally, a rubber sheath 6 is formed on the outside of cable 1, core 1b, and conductor 7 through rubber vulcanization.

[0038] This invention inserts the conductor 1a of cable 1 into the insertion hole 8 of conductor 7. The rubber sheath 6 is formed by vulcanization on the outside of cable 1, core 1b, and conductor 7. When the protective layer of cable 1 is damaged, water is prevented above the inner end face of the large hole in the rubber sheath 6, effectively preventing water from entering the top cover 4. When both the protective layer and the insulation layer of cable 1 are damaged, water enters the insertion hole 8 through conductor 1a and is stored in the liquid storage tank 9, preventing further flow into the top cover 4, effectively reducing the risk of burn-out and improving the service life of the water pump. The conductor 7 and conductor 10 of this invention are plugged in, making the installation and connection of cable 1 convenient and improving installation efficiency. At the same time, it can prevent incorrect cable wiring, which would lead to rework.

[0039] The control board 5 is mounted on the upper bearing seat 3 by screws.

[0040] Furthermore, the depth L1 of the large hole is greater than 20mm, that is, the length of the cable 1 embedded in the rubber sheath 6 is greater than 20mm.

[0041] Connection structure between top cover 4 and oil chamber 22: The top cover 4 is installed on the oil chamber 22 by a long screw 21. The top cover 4 has an installation flange 23 on its outer periphery. The rod of the long screw 21 passes through the installation flange 23 and is screwed to the oil chamber 22.

[0042] Installation structure of rubber sleeve 6: as follows Figure 1 , 2 As shown in Figures 6-9, the outer wall of the rubber sleeve 6 protrudes outward to form a mounting boss 11. The top cover 4 is provided with a limiting boss 12 that limits the lower position of the mounting boss 11. A handle 13 is detachably installed on the top cover 4, and the lower end of the handle 13 is provided with a pressing boss 14 for pressing against the mounting boss 11. The lower surface of the mounting boss 11 and the upper surface of the limiting boss 12 form a contact seal, effectively preventing water from entering the top cover 4 through the gap between the rubber sleeve 6 and the top cover 4. During maintenance, the cable 1 can be quickly replaced simply by removing the handle 13 without disassembling the top cover, thus preventing damage to the seal between the top cover 4 and the upper bearing seat 3, making maintenance convenient. At the same time, the handle 13 can be used to move and transport the water pump, and also serves to press the seal.

[0043] The handle 13 is detachably connected to the top cover 4 by means of screws. The handle 13 is fixedly installed on the top cover 4 by screws, and the shank of the screw passes through the handle 13 and is screwed to the top cover 4.

[0044] Furthermore, the top cover 4 is provided with a mounting platform 24 at its upper end, the rubber sleeve 6 is provided through the mounting platform 24, and the shank of the screw passes through the handle 13 and is screwed to the mounting platform 24.

[0045] The shape of handle 13: as shown Figure 1 , 8 As shown in Figures 9 and 10, the handle 13 is circular, and a through hole 25 for the rubber sheath 6 to extend into is provided in the middle of the handle 13.

[0046] To facilitate the insertion of conductor 1a into socket 8 and the flow of water into the lower storage tank 9, the diameter of socket 8 is 1.1 to 1.3 times the diameter of conductor 1a, and the wall thickness of socket 8 is greater than 0.8 mm. In this embodiment, the diameter of socket 8 is 1.2 times the diameter of conductor 1a.

[0047] To prevent water from entering the top cover 4 through the gap between the rubber sleeve 6 and the conductor 7, the outer wall of the conductor 7 has an annular boss 15 embedded in the rubber sleeve 6. The annular boss 15 and the rubber sleeve 6 form a labyrinth seal structure, which effectively protects the water pump and extends its service life.

[0048] Preferably, there are two or more annular bosses 15. In this embodiment, there are two annular bosses 15.

[0049] Furthermore, the width of the annular boss 15 is greater than 2 mm.

[0050] To avoid contact between the conductive strips 7, the distance between the outer walls of each conductive body 7 is greater than 2mm.

[0051] The connection structure between conductor 7 and conductor 10: as follows Figure 1-5 As shown, the upper end of the conductor 2 10 is provided with a second insertion hole 16, and the lower end of the conductor 1 7 is a plug rod 17 that is inserted into the second insertion hole 16. The plug rod 17 is tightly fitted with the second insertion hole 16.

[0052] Furthermore, the diameter of the insertion rod 17 is calculated based on 1.5 times the maximum allowable current of the water pump to determine the flow area. The top of the insertion rod 17 is chamfered to facilitate installation into the insertion hole 16.

[0053] Installation structure of conductor 2 10 and control board 5: The lower end of conductor 2 10 is provided with a welding rod 18 for welding. The welding rod 18 is inserted into the control board 5 and fixed to the control board 5 by welding.

[0054] Furthermore, the first conductor 7 is circumferentially distributed, and correspondingly, the second conductor 10 is circumferentially distributed, and the second conductor 10 and the control board 5 form a control board assembly.

[0055] To prevent water from entering between the top cover 4 and the upper bearing seat 3, the upper surface of the upper bearing seat 3 is raised to form an assembly boss 19. The lower end of the top cover 4 is fitted onto the assembly boss 19. The inner side wall of the top cover 4 is recessed to form an annular groove. An O-ring 20 fitted onto the assembly boss 19 is provided in the annular groove.

[0056] Preferably, the materials of conductor 7 and conductor 10 are copper, aluminum, or silver. In this embodiment, the materials of conductor 7 and conductor 10 are copper.

[0057] The assembly process of this utility model is as follows: Figure 1-9 As shown, first, place the upper bearing seat 3 on the motor housing 2, then place the top cover 4 on the upper bearing seat 3. Next, fix the top cover 4, upper bearing seat 3, motor housing 2 and oil chamber 22 with the long screw 21. Then, insert the cable 1 with the rubber sheath 6 at the end into the top cover 4, and ensure that the conductor 7 is inserted into the insertion hole 8 of the conductor 10 on the control board 5. Then, fix the handle 13 to the top cover 4 with screws, and press the mounting boss 11 of the rubber sheath 6 between the limiting boss 12 and the pressing boss 14 to complete the installation.

[0058] The above embodiments are only one of the preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes made in accordance with the shape, structure and principle of this utility model should be covered within the protection scope of this utility model.

Claims

1. A water pump with a waterproof quick-connect cable structure, comprising a cable (1), a motor housing (2), an upper bearing seat (3) disposed on the upper end of the motor housing (2), and a top cover (4) pressed onto the upper bearing seat (3), wherein the top cover (4) is hollow and open at the lower end, and a control board (5) mounted on the upper bearing seat (3) is disposed inside the top cover (4), wherein the cable (1) comprises multiple conductors (1a), each conductor (1a) is covered with an insulating layer to form a wire core (1b), and the multiple wire cores (1b) are covered with a protective layer to form a cable, characterized in that: The top cover (4) is provided with a rubber sheath (6) through the upper end. The upper end of the rubber sheath (6) is provided with a large hole for installing the cable (1). The middle part of the rubber sheath (6) is provided with a number of small holes for installing the wire core (1b). The lower end of the rubber sheath (6) is provided with a conductor one (7) whose number and position are adapted to the conductor (1a). The upper end of the conductor one (7) is provided with a socket one (8) for inserting the conductor (1a). A gap is left between the lower surface of the conductor (1a) and the inner end face of the socket one (8) to form a liquid storage tank (9). The control board (5) is provided with a conductor two (10) whose number and position are adapted to the conductor one (7). The lower end of the conductor one (7) extends out of the rubber sheath (6) and is inserted into the conductor two (10). The rubber sheath (6) is formed by vulcanization outside the cable (1), the wire core (1b) and the conductor one (7).

2. The cable waterproof quick connection structure water pump according to claim 1, characterized in that: The outer wall of the rubber sheath (6) protrudes outward to form an mounting boss (11). The top cover (4) is provided with a limiting boss (12) for lowering the mounting boss (11). A handle (13) is detachably installed on the top cover (4). The lower end of the handle (13) is provided with a pressing boss (14) for pressing on the mounting boss (11).

3. The cable waterproof quick connection structure water pump according to claim 1, characterized in that: The diameter of the first socket (8) is 1.1 to 1.3 times the diameter of the conductor (1a), and the wall thickness of the first socket (8) is greater than 0.8 mm.

4. The water pump of claim 1, wherein: The outer side wall of the conductor (7) protrudes outward with an annular boss (15) embedded in the rubber sheath (6), and the annular boss (15) and the rubber sheath (6) form a labyrinth seal structure.

5. The cable waterproof quick connection structure water pump according to claim 1, characterized in that: The distance between the outer walls of each conductor (7) is greater than 2 mm.

6. The water pump of claim 1, wherein: The upper end of the conductor two (10) is provided with a second socket (16), and the lower end of the conductor one (7) is a plug rod (17) that is inserted into the second socket (16). The plug rod (17) is tightly fitted with the second socket (16).

7. The cable waterproof quick connection structure water pump according to claim 1, characterized in that: The lower end of the conductor 2 (10) is provided with a welding rod (18) for welding. The welding rod (18) is inserted into the control board (5) and fixed to the control board (5) by welding.

8. The cable waterproof quick connection structure water pump according to claim 1, characterized in that: The upper surface of the upper bearing seat (3) is raised to form an assembly boss (19), the lower end of the top cover (4) is fitted outside the assembly boss (19), the inner side wall of the top cover (4) is recessed to form an annular groove, and an O-ring (20) fitted outside the assembly boss (19) is provided in the annular groove.

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