Water pump motor with dynamic dustproof heat dissipation structure

Abstract

A water pump motor with a dynamic dustproof heat dissipation structure comprises a motor shell and a motor shaft, the right end face of the motor shell is provided with a plurality of holes communicated with the inner space of the motor shell, and the right end of the motor shell is sleeved with a heat dissipation sleeve matched with the motor shell; an end cover attached to the heat dissipation sleeve is arranged on the right end face of the heat dissipation sleeve. The right end of the motor shaft penetrates into the heat dissipation sleeve rightwards and is provided with a heat dissipation fan blade. An annular groove is formed in the inner wall of the right part of the heat dissipation sleeve; the left end face of the heat dissipation sleeve is provided with a plurality of dustproof holes which are evenly distributed in the circumferential direction. A plurality of air outlet holes communicated with the bottom of the dustproof hole are formed in the groove wall of the left side of the groove; and a sealing piston matched with the dustproof hole is arranged at the bottom of the dustproof hole. According to the water pump motor with the dynamic dustproof heat dissipation structure, rapid heat dissipation of the motor can be realized, external impurities can be prevented from entering the motor shell, and components in the motor are effectively protected.

Description

Technical Field

[0001] This utility model relates to the field of water pumps, and in particular to a water pump motor with a dynamic dustproof and heat dissipation structure. Background Technology

[0002] When a water pump is running, it primarily relies on the motor shaft of the pump motor to drive the impeller inside the pump body to rotate, thus delivering water. During operation, the pump motor inevitably generates heat. Traditional water pump motors often employ a static open-hole cooling design, with a through-hole at the rear of the motor housing relying on natural convection for heat dissipation. However, this cooling method has serious problems. Because the hole leads directly into the motor housing, dust and moisture can easily enter during outdoor operations, leading to winding short circuits, bearing wear, and other malfunctions. This affects the normal use of the motor housing and ultimately shortens the lifespan of the water pump motor. Summary of the Invention

[0003] The present invention aims to solve the existing technical problem by providing a water pump motor with a dynamic dustproof and heat dissipation structure. This structure not only enables rapid heat dissipation of the motor but also prevents external impurities from entering the motor housing, effectively protecting the internal components of the motor.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0005] This utility model discloses a water pump motor with a dynamic dustproof and heat dissipation structure, including a motor housing and a motor shaft. The right end face of the motor housing has several holes communicating with its internal space. A matching heat dissipation sleeve is fitted over the right end of the motor housing. An end cap that fits into the right end face of the heat dissipation sleeve is provided. The right end of the motor shaft extends to the right into the heat dissipation sleeve and is provided with a heat dissipation fan. An annular groove is provided on the inner wall of the right part of the heat dissipation sleeve. Several dustproof holes are evenly distributed in a circle on the left end face of the heat dissipation sleeve. Several air outlets communicating with the bottom of the dustproof holes are provided on the left side wall of the groove. A matching sealing piston is provided at the bottom of the dustproof hole, and the sealing piston blocks and seals the left end opening of the air outlet. A matching limiting plug is screwed to the left end opening of the dustproof hole. A spring is provided between the limiting plug and the sealing piston. Several axially evenly distributed heat dissipation holes are provided on the outer wall of the heat dissipation sleeve, and the heat dissipation holes communicate with the dustproof holes. The rightmost heat dissipation hole is located to the left of the sealing piston.

[0006] The inner wall of the heat dissipation sleeve is provided with a ring-shaped fixing plate, which is located on the right side of the motor housing; the right side wall of the fixing plate is provided with a wind shield fitted outside the motor shaft; the wind shield is trumpet-shaped, and the outer diameter of the wind shield gradually decreases from left to right. The outer diameter of the right end of the wind shield is smaller than the outer diameter of the heat dissipation fan blade, and the wind shield is located on the left side of the heat dissipation fan blade.

[0007] The windshield and the fixing plate, the end cover and the heat sink, and the heat sink and the motor housing are all fixed together by several screws.

[0008] The outer edge of the left end face of the sealing piston is provided with an annular dust removal part, which is sleeved on the right end of the spring; the inner wall of the dust removal part is provided with a dust removal cone surface that is wider on the left and narrower on the right.

[0009] The left end of the limiting plug is provided with a rotating part that fits against the left end face of the heat sink; the center of the right end face of the limiting plug is provided with a limiting part, and the left end of the spring is sleeved outside the limiting part.

[0010] The outer wall of the heat dissipation sleeve is provided with several auxiliary holes that are perpendicular to the left end of the air outlet; the outer end of each auxiliary hole is screwed with a matching plug; the bottom center of the dustproof hole is provided with a pressure hole that is connected to the auxiliary holes.

[0011] The beneficial effects of this utility model are:

[0012] Compared with existing technologies, the water pump motor with the dynamic dustproof and heat dissipation structure of this utility model can utilize the high-pressure airflow generated by the rotation of the cooling fan blades to push the sealing piston to the left. The displacement of the sealing piston allows heat to be dissipated to the outside through the heat dissipation holes along with the high-pressure airflow, thus completing the heat dissipation operation. When the water pump motor stops running, there is no longer high-pressure gas resisting the elastic force of the spring. At this time, the sealing piston will move to the right and reset under the action of the spring, blocking and sealing the pressure hole again. External impurities will be trapped in the dustproof hole, thereby effectively preventing external impurities from entering the motor housing, effectively protecting the components inside the motor housing from damage, and effectively ensuring the service life of the water pump motor. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the water pump motor with dynamic dustproof and heat dissipation structure of this utility model;

[0014] Figure 2 yes Figure 1 An enlarged view of part A. Detailed Implementation

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0016] Please see Figure 1 , Figure 2This utility model provides a water pump motor with a dynamic dustproof and heat dissipation structure, including a motor housing 1 and a motor shaft 2. The right end face of the motor housing 1 has several holes 3 that communicate with its internal space. A matching heat dissipation sleeve 4 is fitted over the right end of the motor housing 1. The right end face of the heat dissipation sleeve 4 has an end cap 5 that fits into it. The right end of the motor shaft 2 extends to the right into the heat dissipation sleeve 4 and is provided with a heat dissipation fan 6. The inner wall of the right part of the heat dissipation sleeve 4 has an annular groove 7. The left end face of the heat dissipation sleeve 4 has several dustproof holes 8 that are evenly distributed around its circumference. The groove 7 has several vent holes 9 on its left side wall that communicate with the bottom of the dustproof hole 8; the bottom of the dustproof hole 8 has a matching sealing piston 10 that blocks and seals the left end of the vent hole 9; the left end of the dustproof hole 8 is screwed with a matching limiting plug 11; a spring 12 is provided between the limiting plug 11 and the sealing piston 10; the outer wall of the heat dissipation sleeve 4 has several axially evenly distributed heat dissipation holes 13 that communicate with the dustproof hole 8; the rightmost heat dissipation hole 13 is located to the left of the sealing piston 10.

[0017] The inner wall of the heat dissipation sleeve 4 is provided with a ring-shaped fixing plate 14, which is located on the right side of the motor housing 1; the right side wall of the fixing plate 14 is provided with a wind shield 15 fitted outside the motor shaft 2; the wind shield 15 is trumpet-shaped, and the outer diameter of the wind shield 15 gradually decreases from left to right. The outer diameter of the right end of the wind shield 15 is smaller than the outer diameter of the heat dissipation fan blade 6, and the wind shield 15 is located on the left side of the heat dissipation fan blade 6.

[0018] The windshield 15 is fixed to the fixing plate 14, the end cover 5 is fixed to the heat sink 4, and the heat sink 4 is fixed to the motor housing 1 by a number of screws 23.

[0019] The sealing piston 10 has an annular dust removal part 16 on the outer edge of its left end face, and the dust removal part 16 is sleeved on the right end of the spring 12; the inner wall of the dust removal part 16 has a dust removal cone surface 17 that is wider on the left and narrower on the right.

[0020] The left end of the limiting plug 11 is provided with a rotating part 18 that fits against the left end face of the heat dissipation sleeve 4; the center of the right end face of the limiting plug 11 is provided with a limiting part 19, and the left end of the spring 12 is sleeved on the limiting part 19.

[0021] The outer wall of the heat dissipation sleeve 4 is provided with several auxiliary holes 20 that are perpendicular to the left end of the air outlet 9; the outer end of the auxiliary hole 20 is screwed with a matching plug 21; the bottom center of the dustproof hole 8 is provided with a pressure hole 22 that is connected to the auxiliary hole 20.

[0022] The method of using this utility model is as follows:

[0023] When the water pump motor is running, the motor shaft will synchronously drive the cooling fan 6 to rotate. The rotating cooling fan 6 will generate suction, drawing the heat from inside the motor housing 1 through the hole 3 into the heat sink 4. With the end cover 5 covering and sealing the right end face of the heat sink 4, the inside of the heat sink 4 is a sealed space. At this time, the air pressure inside the heat sink 4 will continuously rise. The high-pressure airflow will be pushed by the rotation of the cooling fan 6, passing through the air outlet 9, auxiliary hole 20, and pressure application hole 22 in sequence, and pushing the right end face of the sealing piston 10 to the left. Since the pressure application hole 22 is located at the center of the bottom of the dustproof hole 8, it can effectively ensure that the force of the high-pressure gas can be concentrated on the center of the right end face of the sealing piston 10, thereby ensuring the stability of the sealing piston 10 when it is pressed to the left.

[0024] As the sealing piston 10 moves to the left, the spring 12 is compressed and generates elastic force. After the sealing piston 10 moves to the left for a certain distance, some of the heat dissipation holes 13 will change from being on the left side of the sealing piston 10 to being on the right side of the sealing piston 10. When some of the heat dissipation holes 13 are on the right side of the sealing piston 10, these heat dissipation holes 13 can be connected to the pressure hole 22 through the dustproof hole 8. At this time, the heat can be dissipated to the outside with the high-pressure gas through the heat dissipation holes 13, completing the heat dissipation operation. When the water pump motor stops running, there is no longer high-pressure gas resisting the elastic force of the spring 12. The sealing piston 10 will move to the right and reset under the action of the elastic force of the spring 12, blocking and sealing the pressure hole 22 again. At this time, external impurities will be trapped in the dustproof hole 8, thereby effectively preventing external impurities from entering the motor housing 1, effectively protecting the components inside the motor housing 1, avoiding damage, and effectively ensuring the service life of the water pump motor.

[0025] The inner wall of the heat sink 4 is provided with a ring-shaped fixing plate 14. The fixing plate 14 is located on the right side of the motor housing 1. The right side wall of the fixing plate 14 is provided with a wind shield 15 that is fitted outside the motor shaft 2. The wind shield 15 is trumpet-shaped, and the outer diameter of the wind shield 15 gradually decreases from left to right. The outer diameter of the right end of the wind shield 15 is smaller than the outer diameter of the heat sink fan 6. The wind shield 15 is located on the left side of the heat sink fan 6. The wind shield 15 can block the high-pressure airflow generated by the rotation of the heat sink fan 6 to the maximum extent at the outer ring of the heat sink fan 6, that is, at the location of the groove 7, so as to ensure that the high-pressure airflow can smoothly enter the air outlet 9, so that the sealing piston 10 can be displaced under pressure.

[0026] The windshield 15 is fixed to the fixing plate 14, the end cover 5 is fixed to the heat sink 4, and the heat sink 4 is fixed to the motor housing 1 by a number of screws 23. This fixing method facilitates the disassembly and assembly of the windshield 15 and the fixing plate 14, the end cover 5 and the heat sink 4, and the heat sink 4 and the motor housing 1, thereby facilitating the disassembly and assembly of other components.

[0027] The outer edge of the left end face of the sealing piston 10 is provided with an annular dust removal part 16. The dust removal part 16 is sleeved on the right end of the spring 12. The inner wall of the dust removal part 16 is provided with a dust removal cone surface 17 that is wider on the left and narrower on the right. The presence of the dust removal cone surface 17 can form a sharp and pointed annular structure at the left end of the dust removal part. Therefore, even if some external impurities remain in the dustproof hole 8, as the dust removal part 16 moves to the left, the dust removal part 16 can use its left end to scrape them off from the inner wall of the dustproof hole 8 and collect them inside, ensuring the smoothness of the leftward movement of the sealing piston 10.

[0028] The left end of the limiting plug 11 is provided with a rotating part 18 that fits against the left end face of the heat sink 4. The center of the right end face of the limiting plug 11 is provided with a limiting part 19. The left end of the spring 12 is sleeved on the limiting part 19. The presence of the rotating part 18 facilitates the application of force to the limiting plug 11 and facilitates the disassembly and assembly of the limiting plug 11. The presence of the limiting part 19 can ensure the stability of the left end of the spring 12. The presence of the dust removal part 16 can ensure the stability of the right end of the spring 12. When both ends of the spring 12 are stabilized, the stability of the spring 12 when it is compressed and opened can be effectively guaranteed.

Claims

1. A water pump motor with a dynamic dustproof and heat dissipation structure, comprising a motor housing and a motor shaft, wherein the right end face of the motor housing has a plurality of holes communicating with its internal space, characterized in that: The right end of the motor housing is fitted with a matching heat sink sleeve; the right end face of the heat sink sleeve is provided with an end cap that fits therein; the right end of the motor shaft extends to the right into the heat sink sleeve and is provided with a heat dissipation fan; the inner wall of the right part of the heat sink sleeve is provided with an annular groove; the left end face of the heat sink sleeve is provided with several dustproof holes evenly distributed in a circle; the left side wall of the groove is provided with several air outlets that communicate with the bottom of the dustproof holes; the bottom of the dustproof holes is provided with a matching sealing piston that blocks and seals the left end opening of the air outlet; the left end opening of the dustproof hole is screwed with a matching limiting plug; a spring is provided between the limiting plug and the sealing piston; the outer wall of the heat sink sleeve is provided with several heat dissipation holes evenly distributed in an axial direction, which communicate with the dustproof holes; the rightmost heat dissipation hole is located to the left of the sealing piston.

2. A water pump motor with a dynamic dustproof and heat dissipation structure according to claim 1, characterized in that: The inner wall of the heat dissipation sleeve is provided with a ring-shaped fixing plate, which is located on the right side of the motor housing; the right side wall of the fixing plate is provided with a wind shield fitted outside the motor shaft; the wind shield is trumpet-shaped, and the outer diameter of the wind shield gradually decreases from left to right. The outer diameter of the right end of the wind shield is smaller than the outer diameter of the heat dissipation fan blade, and the wind shield is located on the left side of the heat dissipation fan blade.

3. A water pump motor with a dynamic dustproof and heat dissipation structure according to claim 2, characterized in that: The windshield and the fixing plate, the end cover and the heat sink, and the heat sink and the motor housing are all fixed together by several screws.

4. A water pump motor with a dynamic dustproof and heat dissipation structure according to claim 1, characterized in that: The outer edge of the left end face of the sealing piston is provided with an annular dust removal part, which is sleeved on the right end of the spring; the inner wall of the dust removal part is provided with a dust removal cone surface that is wider on the left and narrower on the right.

5. A water pump motor with a dynamic dustproof and heat dissipation structure according to claim 1, characterized in that: The left end of the limiting plug is provided with a rotating part that fits against the left end face of the heat sink; the center of the right end face of the limiting plug is provided with a limiting part, and the left end of the spring is sleeved outside the limiting part.

6. A water pump motor with a dynamic dustproof and heat dissipation structure according to claim 1, characterized in that: The outer wall of the heat dissipation sleeve is provided with several auxiliary holes that are perpendicular to the left end of the air outlet; the outer end of each auxiliary hole is screwed with a matching plug; the bottom center of the dustproof hole is provided with a pressure hole that is connected to the auxiliary holes.

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