Water pump of cable waterproof quick-connection structure

Abstract

The invention belongs to the technical field of water pumps, and particularly relates to a water pump with a cable waterproof quick-connection structure, which comprises a cable, a motor shell, an upper bearing seat and a top cover, a control panel mounted on the upper bearing seat is arranged in the top cover, the cable comprises a plurality of conductors, the conductors are coated with insulating layers to form wire cores, the plurality of wire cores are coated with a protective layer to form a cable, and the cable is connected with the motor shell. A rubber sheath penetrates through the upper end of the top cover, the upper end of the rubber sheath is provided with a large hole used for installing a cable, the middle of the rubber sheath is provided with a plurality of small holes used for installing wire cores, the lower end of the rubber sheath is provided with a first electric conductor, and the upper end of the first electric conductor is provided with a first jack used for inserting a conductor. A gap is reserved between the lower surface of the conductor and the inner end face of the first jack to form a liquid storage groove, a second electric conductor is arranged on the control panel, the lower end of the first electric conductor extends out of the rubber sheath to be connected with the second electric conductor in an inserted mode, and the rubber sheath is formed outside the cable, the cable core and the first electric conductor through vulcanization. The burn-in risk can be effectively reduced, and the service life of the water pump is prolonged.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of water pumps, in particular to a water pump with a cable waterproof quick connection structure. BACKGROUND

[0002] A submersible permanent magnet submersible pump is usually connected to an external power source through a cable. In the existing submersible pump, the cable is usually electrically connected to a control panel arranged below the top cover through the top cover. When the protective layer of the cable is damaged, water will enter the water pump from the gap between the insulating layers of the cable. When both the protective layer and the insulating layer of the cable are damaged, water will flow into the water pump through the gap between the insulating layer and the conductor, thereby causing the machine to burn and shortening the service life of the water pump. SUMMARY

[0003] The purpose of the present application is to provide a water pump with a cable waterproof quick connection structure that can effectively reduce the risk of burning and improve the service life of the water pump.

[0004] The present application is implemented as follows: A water pump with a cable waterproof quick connection structure, comprising a cable, a motor housing, an upper bearing seat arranged at the upper end of the motor housing, and a top cover arranged on the upper bearing seat, the top cover being hollow and having an open lower end, the top cover having a control panel arranged on the upper bearing seat, the cable comprising a plurality of conductors, each conductor being covered with an insulating layer to form a core, and the plurality of cores being covered with a protective layer to form a cable, the top cover having a rubber sheath arranged at the upper end, the rubber sheath having a large hole at the upper end for mounting the cable, a plurality of small holes at the middle for mounting the cores, and a plurality of conductive bodies I at the lower end corresponding in number and position to the conductors, the conductive bodies I having a first insertion hole at the upper end for inserting the conductors, the lower surface of the conductors and the inner end surface of the first insertion hole having a gap to form a liquid storage tank, the control panel having a plurality of conductive bodies II corresponding in number and position to the conductive bodies I, the conductive bodies II being inserted into the conductive bodies I, and the rubber sheath being vulcanized and formed around the cable, the cores, and the conductive bodies I.

[0005] In the above-mentioned water pump with a cable waterproof quick connection structure, the control panel is fixedly installed on the upper bearing seat by screws.

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

[0007] In the above-mentioned water pump with a cable waterproof quick connection structure, the top cover is installed on the oil chamber by a long screw, and the outer periphery of the top cover is provided with a mounting protrusion, and the rod portion of the long screw passes through the mounting protrusion and is screwed with the oil chamber.

[0008] In the water pump of the cable waterproof quick connection structure, the outer side wall of the rubber sheath is outwardly convex to form a mounting boss, the top cover is provided with a limiting boss for limiting the lower end of the mounting boss, and a handle is detachably mounted on the top cover.

[0009] In the water pump of the cable waterproof quick connection structure, the detachable connection between the handle and the top cover can be that the handle is fixedly mounted on the top cover by a screw, and the rod of the screw is screwed with the top cover.

[0010] In the water pump of the cable waterproof quick connection structure, the top end of the top cover is provided with a mounting table, the rubber sheath is arranged through the mounting table, and the rod of the screw is screwed with the mounting table.

[0011] In the water pump of the cable waterproof quick connection structure, the detachable connection between the handle and the top cover can also be that the handle is detachably connected with the top cover through a clamping block and a clamping groove.

[0012] In the water pump of the cable waterproof quick connection structure, the handle is circular, and a through hole for the rubber sheath to extend into is arranged in the middle of the handle.

[0013] In the water pump of the cable waterproof quick connection structure, the diameter of the first insertion hole is 1.1-1.3 times the diameter of the conductor, and the wall thickness of the first insertion hole is greater than 0.8 mm.

[0014] In the water pump of the cable waterproof quick connection structure, the outer side wall of the first conductive body is outwardly convex to form 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 of the cable waterproof quick connection structure, the annular boss is provided with two or more.

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

[0017] In the water pump of the cable waterproof quick connection structure, the distance between the outer side walls of each first conductive body is greater than 2 mm.

[0018] In the water pump of the cable waterproof quick connection structure, the second conductive body is provided with a second insertion hole at the upper end, the lower end of the first conductive body is provided with an insertion rod inserted into the second insertion hole, and the insertion rod is tightly matched with the second insertion hole.

[0019] In the water pump of the cable waterproof quick connection structure, the diameter of the insertion rod is calculated according to the overcurrent area of 1.5 times the maximum current allowed by the water pump, and the top of the insertion rod is provided with a chamfer for facilitating installation into the second insertion hole 16.

[0020] In the water pump of the cable waterproof quick connection structure, the lower end of the conductive body two is provided with a welding rod for welding, the welding rod is inserted on the control panel, and the control panel is fixed by welding.

[0021] In the water pump of the cable waterproof quick connection structure, the conductive body one is circumferentially distributed, and the conductive body two is circumferentially distributed, and the conductive body two and the control panel form a control panel assembly.

[0022] In the water pump of the cable waterproof quick connection structure, the upper surface of the upper bearing seat is convexly formed with an assembly boss, the lower end of the top cover is sleeved outside the assembly boss, the inner side wall of the top cover is concavely formed with an annular groove, and the annular groove is provided with an O-shaped ring sleeved outside the assembly boss.

[0023] In the water pump of the cable waterproof quick connection structure, the conductive body one and the conductive body two are made of copper, aluminum or silver.

[0024] The present application has the following advantages compared with the prior art: 1. In the present application, the conductor of the cable is inserted into the insertion hole one of the conductive body one, and the rubber sheath is vulcanized and formed outside the cable, the core and the conductive body one. When the protective layer of the cable is damaged, water is prevented above the inner end face of the large hole of the rubber sheath, effectively preventing water from entering the top cover. When the protective layer and the insulating layer of the cable are damaged, water enters the insertion hole one through the conductor and is stored in the liquid storage tank, and cannot further flow into the top cover, effectively reducing the risk of burning the machine and improving the service life of the water pump. The conductive body one and the conductive body two of the present application are inserted and connected, the cable is installed and connected conveniently, and the installation efficiency is improved. At the same time, it can prevent wiring error of the cable, which leads to rework.

[0025] 2. The outer side wall of the rubber sheath is convexly formed with an installation boss, the top cover is provided with a limiting boss for limiting the lower end of the installation boss, and a handle is detachably installed above the top cover. The lower end of the handle is provided with a pressing boss for pressing on the installation boss. When maintaining, only the handle needs to be removed, the cable can be quickly replaced, the top cover does not need to be disassembled, the seal between the top cover and the upper bearing seat can be prevented from being damaged, and maintenance is convenient. At the same time, the handle can be used for carrying and moving the water pump, and also has the function of pressing and sealing. BRIEF DESCRIPTION OF DRAWINGS

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

[0027] Figure 2 is a sectional view of the cable, the rubber sheath and the conductive body one of the present application.

[0028] Figure 3 is a sectional view of the conductive body one of the present application.

[0029] Figure 4 is a perspective view of the control board and the conductor two of the present application.

[0030] Figure 5 is a sectional view of the conductor two of the present application.

[0031] Figure 6 is a sectional view of the top cover of the present application.

[0032] Figure 7 is a perspective view of the top cover of the present application.

[0033] Figure 8 is a sectional view of the handle of the present application.

[0034] Figure 9 is a perspective view of the handle of the present application.

[0035] Reference signs: 1, cable wire; 1a, conductor; 1b, wire core; 2, motor housing; 3, upper bearing seat; 4, top cover; 5, control board; 6, rubber sheath; 7, conductor one; 8, socket one; 9, liquid storage tank; 10, conductor two; 11, mounting boss; 12, limiting boss; 13, handle; 14, pressing boss; 15, annular boss; 16, socket two; 17, insertion rod; 18, welding rod; 19, assembling boss; 20, O-ring; 21, long screw rod; 22, oil chamber; 23, mounting flange; 24, mounting table; 25, through hole. DETAILED DESCRIPTION

[0036] The present application will be further described in the following specific examples, referring to 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 the present invention: as follows Figures 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] In this invention, the conductor 1a of cable 1 is inserted into the socket 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 of 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 socket 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] Connecting structure of the top cover 4 and the oil chamber 22: the top cover 4 is installed on the oil chamber 22 through the long screw 21, the outer periphery of the top cover 4 is provided with an installation protrusion 23, the rod of the long screw 21 passes through the installation protrusion 23 and is screwed with the oil chamber 22.

[0042] Mounting structure of the rubber sheath 6: as shown in Figure 1 、 2 , 6-9, the outer side wall of the rubber sheath 6 is outwardly protruded to form an installation boss 11, the top cover 4 is provided with a limiting boss 12 for limiting the lower end of the installation 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 on the installation boss 11. The lower surface of the installation boss 11 is in contact with the upper surface of the limiting boss 12 to form a sealing structure, which effectively prevents water from entering the top cover 4 through the gap between the rubber sheath 6 and the top cover 4. When the water pump is maintained, the cable 1 can be quickly replaced by only removing the handle 13, without the need to disassemble the top cover, so that the sealing between the top cover 4 and the upper bearing seat 3 can be prevented from being damaged, and the maintenance is convenient. Meanwhile, the handle 13 can be used for carrying and moving the water pump and has the function of pressing and sealing.

[0043] Detachable connecting mode of the handle 13 and the top cover 4: the handle 13 is fixedly installed on the top cover 4 through a screw, and the rod of the screw passes through the handle 13 and is screwed with the top cover 4.

[0044] Further, the top cover 4 is provided with an installation table 24 at the upper end, the rubber sheath 6 passes through the installation table 24, and the rod of the screw passes through the handle 13 and is screwed with the installation table 24.

[0045] Shape of the handle 13: as shown in Figure 1 、 8 , 9, the handle 13 is circular, and the handle 13 is provided with a through hole 25 for the rubber sheath 6 to extend into.

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

[0047] In order to prevent water from entering the top cover 4 through the gap between the rubber sheath 6 and the electric conductor 7, the outer side wall of the electric conductor 7 is outwardly protruded to form an annular boss 15 embedded in the rubber sheath 6, the annular boss 15 and the rubber sheath 6 form a labyrinth sealing structure, which effectively protects the water pump and prolongs the service life.

[0048] Preferably, the annular boss 15 is provided with two or more. In this embodiment, the annular boss 15 is provided with two.

[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 Figures 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 invention: as follows Figures 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 the present application, and do not limit the scope of the present application, so that: any equivalent changes made in shape, structure, principle of the present application, should be covered within the scope of protection of the present application.

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

6. A water pump with a waterproof quick-connect cable structure according to claim 1, characterized in that: 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. A water pump with a waterproof quick-connect cable structure 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. A water pump with a waterproof quick-connect cable structure 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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