TWI832305B - Leak-proof pump - Google Patents

Abstract

The invention is a pump, which includes a pump body, a spindle, a leak-proof sleeve and a liquid detection unit. The pump body has a ring wall, a head seat and a tail cover. An inner sealing wall of the head base covers the annular wall; an outer sealing wall of the head base is located on the side of the inner sealing wall opposite to the annular wall, and is sandwiched between the inner sealing wall and the inner sealing wall to form a drainage space. The mandrel penetrates the outer sealing wall and the inner sealing wall. The leak-proof sleeve is set outside the ring wall and sandwiched to form a sealed liquid storage space. The liquid storage space is connected to the drainage space, and the liquid detection unit measures the liquid level height in the liquid storage space. In this way, when the liquid inside the pump body leaks from the point where the mandrel penetrates the inner sealing wall, the leaked liquid will be enclosed in the liquid storage space and will not leak out of the pump, and can be detected through the liquid detection unit. Know that there is an internal leak.

Description

Leak-proof pump

The invention relates to a pump for transporting liquids.

Pumps in the prior art include a pump housing, a pressurizing structure and a spindle. The pressurizing structure is arranged in the pump casing; the inner end of the mandrel is connected to the pressurizing structure in the pump casing, and the outer end passes out of the pump casing and is used to connect to a motor or other external power source. When the pump is operating, the motor drives the boosting structure through the spindle, so that the boosting structure pressurizes the liquid in the pump housing and moves the liquid in a specific direction. The supercharging structure has various structures depending on the type of pump. Taking a centrifugal pump as an example, the supercharging structure is one or more sets of impellers, which uses the centrifugal force of the impeller rotation to pressurize the liquid in the pump casing.

In order to prevent the pressurized liquid in the pump casing from leaking out of the pump casing from the gap between the mandrel and the pump casing, a shaft seal is provided at the point where the pump casing is penetrated by the mandrel. However, when the spindle rotates at high speed, the sealing performance of the shaft seal will deteriorate over time, resulting in leakage of the liquid in the pump casing.

Some liquids do not allow leakage due to their special properties, such as coolants used for immersion cooling. The so-called immersion cooling means that the computer server is directly immersed in the coolant. The heat generated by the components is directly transferred to the coolant for heat dissipation. Therefore, the server does not need to install traditional cooling fins, heat-conducting copper tubes or fans. Cold components allow the server to be designed extremely compactly and reduce noise and maintenance requirements. However, the coolant itself must have special properties such as non-conductivity and low viscosity, making the coolant very expensive and not allowed to leak.

However, existing pumps cannot completely avoid liquid leakage and need to be improved.

In view of the above-mentioned shortcomings and shortcomings of the prior art, the present invention provides a pump with anti-leakage function to prevent leakage of the transported liquid.

In order to achieve the above creative purpose, the technical means used in this creation is to design a pump with a leak-proof function, including: a pump body, which is formed with a water inlet and a water outlet; the pump body has: a ring wall, which Surrounding the openings of two opposite annular walls; a head seat and a tail cover, respectively covering the openings of the two annular walls of the annular wall; the head base has: an inner sealing wall, which covers the corresponding openings of the annular wall The annular wall opens, the inner sealing wall, the annular wall and the tail cover form a liquid space surrounding the inner sealing wall, the annular wall and the tail cover, and the liquid space communicates with the water inlet and the water outlet; an inner through hole is formed on the inner sealing wall; an outer The sealing wall is located on the side of the inner sealing wall opposite to the annular wall; the outer sealing wall is spaced apart from the inner sealing wall and sandwiched between them to form a drainage space; an outer penetration hole is formed through the outer sealing wall; The outer perforation hole and the inner perforation hole of the inner sealing wall are connected to the drainage space; a pressurizing structure is provided in the liquid space of the pump body and is used to pressurize the liquid in the liquid space; A mandrel, which rotatably penetrates the outer through hole and the inner through hole of the head base and connects to the pressurizing structure; an inner shaft seal and an outer shaft seal, which are respectively provided in the inner through hole and the inner through hole. The external penetration hole; a leak-proof sleeve, which is sleeved outside the annular wall of the pump body and connected to the head base and the tail cover, so that the leak-proof sleeve is connected to the annular wall of the pump body A sealed liquid storage space is formed between them; the liquid storage space is connected to the drainage space and allows the liquid in the drainage space to flow to the liquid storage space; A liquid detection unit is connected to the liquid storage space and used to measure the liquid level height of the liquid in the liquid storage space or to detect whether there is liquid in the liquid storage space.

When the invention is in use, the liquid to be transported under pressure passes from the liquid space of the water inlet, where it is pressurized by the pressurizing structure and then leaves the pump from the water outlet. The liquid space is surrounded by three structures: an inner sealing wall, an annular wall and a tail cover. The combination of these three structures is roughly equivalent to the pump casing in the prior art.

The advantages of this creation are as follows:

First, the headstock forms a drainage space through the outer sealing wall, and at the same time, a leak-proof sleeve is provided outside the ring wall to form a sealed liquid storage space. Therefore, when the inner shaft seal provided on the inner sealing wall leaks, the leaked liquid will flow into the liquid storage space through the drainage space and be sealed in the liquid storage space by the outer sealing wall and the leak-proof sleeve without leakage. If it leaks out of the pump, it can be recycled without causing waste or polluting the environment.

Second, when the inner shaft seal leaks, the liquid detection unit or leakage detector can quickly detect the presence of liquid in the liquid storage space, which can then remind the user to repair it as soon as possible.

Furthermore, in the pump with anti-leakage function, the pump body further has a plurality of pump body fasteners, each of the pump body fasteners penetrates the tail cover and fixes the head base, thereby clamping the ring wall. Between the headstock and the tail cap.

Furthermore, in the pump with anti-leakage function, a first mounting ring groove is formed on the outer sealing wall of the head base; a second mounting ring groove is formed on the tail cover; and the pump body has a A first sealing ring and a second sealing ring are respectively provided in the first mounting ring groove and the second mounting ring groove; a first opening and a second opening are respectively formed at opposite ends of the leakage-proof sleeve; The leakage-proof sleeve is sleeved or penetrated the outer sealing wall of the head base, and the first sealing ring is sandwiched between the first mounting ring groove and the inner or outer ring surface of the leakage-proof sleeve. time, and then the first opening of the leak-proof sleeve is closed by the outer sealing wall; the leak-proof sleeve is sleeved or penetrated through the tail cover, and the second sealing ring is sandwiched between the third between the two mounting ring grooves and the inner or outer ring surface of the leak-proof sleeve, so that the second opening of the leak-proof sleeve is closed by the tail cap.

Furthermore, in the pump with anti-leakage function, the first mounting annular groove of the outer sealing wall of the head base is formed on an outer annular surface of the outer sealing wall; the leakage-proof sleeve sleeve The outer sealing wall is provided, and the first sealing ring is sandwiched between the first mounting ring groove and the inner ring surface of the leakage-proof sleeve.

Furthermore, in the pump with a leak-proof function, the second mounting ring groove of the tail cap is formed on an inner ring surface of the tail cap; the leak-proof sleeve penetrates the tail cap, and The second sealing ring is sandwiched between the second installation ring groove and the outer ring surface of the leakage-proof sleeve.

Furthermore, in the pump with a leak-proof function, the second mounting ring groove of the tail cap is formed on an outer ring surface of the tail cap; the leak-proof sleeve is sleeved on the tail cap, and The second sealing ring is sandwiched between the second installation ring groove and the inner ring surface of the leakage-proof sleeve.

Furthermore, in the pump with anti-leakage function, the head base of the pump body further has a bearing wall, and a bearing through hole passes through the bearing wall; the mandrel passes through the bearing through hole and the outer surface in sequence. The through hole and the inner through hole; the pump body further has an end bearing, which is arranged in the bearing through hole of the bearing wall and sleeved outside the spindle.

Furthermore, the pump with anti-leakage function, wherein the pump is a centrifugal pump, the pressurizing structure includes at least one impeller; the water inlet of the pump body is formed on the tail cover; the water outlet is formed on the tail cover. In this head seat.

Furthermore, in the pump with anti-leakage function, the spindle is arranged horizontally.

10: Pump body

101:Liquid space

102:Water inlet

103:Water outlet

104: Drainage space

105:Liquid storage space

106:Leak hole

11: Ring wall

111:Open your mouth

12: Head seat

121:Inner sealing wall

1211: Internal penetration hole

122:Outer sealing wall

1221: External penetration hole

1222: First installation ring groove

1223:First ring protrusion

123:Bearing wall

1231:Bearing perforation

13: Tail cover

131: Sensor hole

132:Outer cover

133:Inner cover

14:First sealing ring

15:Second sealing ring

16: Pump body fasteners

17:Head end bearing

20:Supercharging structure

21: Impeller

30: mandrel

41:Inner shaft seal

42:Outer shaft seal

50: Leak-proof sleeve

502:Second opening

60:Liquid detection unit

13A:Tail cap

132A:Second ring protrusion

133A: Second mounting ring groove

15A: Second sealing ring

50A: Leak-proof sleeve

30B: mandrel

105C: Liquid storage space

13C:Tail cap

131C: Sensor hole

50C: Leak-proof sleeve

501C: Sensor hole

60C: Liquid detection unit

91:Pedestal

Figure 1 is a three-dimensional appearance view of the first embodiment of the present invention.

Figure 2 is an exploded three-dimensional view of the first embodiment of the present invention.

Figure 3 is a partial three-dimensional appearance view of the first embodiment of the present invention from another angle.

Figure 4 is a schematic cross-sectional view of the first embodiment of the present invention, with the cross-sectional position located at the center.

Figure 5 is another schematic cross-sectional view of the first embodiment of the present invention. The cross-sectional position is offset from the center to show that the drainage space and the liquid storage space are connected.

Figure 6 is a partial cross-sectional schematic view of the second embodiment of the present invention, showing that the leakage-proof sleeve is sleeved on the second annular protrusion of the tail cap, and the second sealing ring is sandwiched between the second installation ring groove and the leakage-proof sleeve. between the inner annulus of the cylinder.

Figure 7 is a partial cross-sectional schematic view of the third embodiment of the present invention, showing that the spindle of the pump is arranged vertically, and showing a situation in which leakage occurs in the inner shaft seal.

Figure 8 is a perspective view of the fourth embodiment of the present invention.

Figure 9 is a schematic cross-sectional view of the fourth embodiment of the present invention.

Please refer to Figures 1, 2 and 4. The pump of the present invention includes a pump body 10, a pressurizing structure 20, a spindle 30, two shaft seals, a leak-proof sleeve 50 and a liquid detection unit. 60.

The pump body 10 is a hollow body and forms a liquid space 101, and also has a water inlet 102 and a water outlet 103. The water inlet 102 and the water outlet 103 communicate with the liquid space 101. The pump body 10 has an annular wall 11, a head seat 12, a tail cover 13, and preferably has a first sealing ring 14, a second sealing ring 15, a plurality of pump body fasteners 16 and a head end bearing 17.

The annular wall 11 surrounds two opposite annular wall openings 111. The head base 12 and the tail cover 13 respectively cover the two annular wall openings 111 of the annular wall 11. The water inlet 102 is preferably formed on the tail cover 13, and the water outlet 103 is relatively small. The best place is formed on the head base 12. The ring wall 11 in this embodiment is not formed in one piece, but is formed by multiple rings sequentially connected along a center line.

Please refer to Figures 3 to 5. The headstock 12 has an inner sealing wall 121, an outer sealing wall 122 and a bearing wall 123, and the inner sealing wall 121, the outer sealing wall 122 and the bearing wall 123 are preferably parallel. Interval settings. The inner sealing wall 121 covers the corresponding annular wall opening 111 on the annular wall 11 , and the inner sealing wall 121 , the annular wall 11 and the tail cover 13 surround the aforementioned liquid space 101 . An inner through hole 1211 is formed through the inner sealing wall 121 (as shown in FIG. 4 ). In this embodiment, the head base 12 is designed to be detachably connected to the annular wall 11 to facilitate maintenance and production, but is not limited thereto. The head base 12 and the annular wall 11 may also be designed to be integrated as appropriate.

The outer sealing wall 122 is located on the side of the inner sealing wall 121 opposite the annular wall 11 (that is, the outer sealing wall 122 and the annular wall 11 are located on opposite sides of the inner sealing wall 121 respectively). The outer sealing wall 122 is spaced apart from the inner sealing wall 121 and A drainage space 104 is formed between them. An outer through hole 1221 (as shown in FIG. 4 ) is formed through the outer sealing wall 122 , and the outer through hole 1221 and the inner through hole 1211 of the inner sealing wall 121 are connected to the drainage space 104 .

In this embodiment, a first mounting ring groove 1222 (shown in FIG. 2 ) is formed on the outer sealing wall 122 , and the first sealing ring 14 (shown in FIG. 4 ) is disposed in the first mounting ring groove 1222 . Specifically, a first annular protrusion 1223 (as shown in FIG. 4 ) is protrudingly formed on the outer sealing wall 122 , and a first mounting annular groove 1222 is formed on the outer annular surface of the first annular protrusion 1223 .

The bearing wall 123 has a bearing through hole 1231 (as shown in Figure 4), and the head end bearing 17 (as shown in Figure 4) is disposed in the bearing through hole 1231 and sleeved outside the spindle 30. The head end bearing 17 is preferably It is a ball bearing.

In this embodiment, the tail cover 13 includes a connected outer cover 132 and an inner cover 133 (as shown in FIG. 4 ). The outer cover 132 closes the second opening 502 of the leak-proof sleeve 50 , and the inner cover 132 closes the second opening 502 of the leak-proof sleeve 50 . The body 133 closes the annular wall opening 111 of the annular wall 11 . Furthermore, a second annular protrusion is preferably formed on one side of the outer cover body 132 of the tail cover 13, and a second mounting annular groove is formed on the inner annular surface of the second annular protrusion. The second sealing ring 15 (shown in Figure 4) is provided in the second mounting ring groove. The tail cover 13 preferably has a sensor hole formed therethrough. The hole 131 connects the liquid storage space 105 with the external space and is used for installing the liquid detection unit 60 . The opening formed by the sensor through hole 131 on the inside of the tail cover 13 is preferably located at the lowest part of the liquid storage space 105 .

Each pump body fastener 16 penetrates the tail cover 13 and fixes the head base 12, thereby clamping the annular wall 11 between the head base 12 and the tail cover 13. Each pump body fastener 16 is specifically a bolt, which penetrates the tail cover 13 and is screwed to the head base 12 . In this embodiment, the tail cover 13 is designed to be detachably connected to the annular wall 11 to facilitate maintenance and production, but is not limited to this. The tail cover 13 and the annular wall 11 may also be designed to be integrated as appropriate.

The aforementioned pressurizing structure 20 is disposed in the liquid space 101 of the pump body 10, and can pressurize the liquid in the liquid space 101, thereby forcing the liquid to move from the water inlet 102 toward the water outlet 103. The pump in this embodiment is a centrifugal pump, and specifically a multi-stage centrifugal pump, so the boosting structure 20 includes multiple sets of impellers 21 arranged along a rotation axis; in other preferred embodiments, the present invention It can also be a single-stage centrifugal pump with only one set of impellers 21, or even other types of pumps.

The aforementioned mandrel 30 can rotate through the bearing through hole 1231, the outer through hole 1221 and the inner through hole 1211 of the head base 12 in sequence from the outside to the inside, and is connected to the supercharging structure 20. One end of the spindle 30 protrudes from the pump body 10 to connect to an external power source (not shown in the figure) such as a motor, thereby transmitting power from the external power source to the supercharging structure 20 . The mandrel 30 is preferably arranged horizontally, but is not limited to this. As shown in FIG. 7 , the mandrel 30B can also be arranged vertically.

The two aforementioned shaft seals are an inner shaft seal 41 (shown in Figure 4) and an outer shaft seal 42 (shown in Figure 4). The inner shaft seal 41 is located in the inner through hole 1211 of the inner sealing wall 121 and The gap between the hole wall of the inner through hole 1211 and the mandrel 30 is closed to prevent the pressurized liquid in the liquid space 101 from leaking. The outer shaft seal 42 is provided at the outer through hole 1221 of the outer sealing wall 122 and seals the outer seal. A gap is provided between the hole wall of the hole 1221 and the mandrel 30 to prevent the liquid in the drainage space 104 from leaking to the outside.

The aforementioned leak-proof sleeve 50 is set outside the annular wall 11 of the pump body 10 . A first opening and a second opening 502 are respectively formed at opposite ends of the leak-proof sleeve 50 (as shown in FIG. 2 ). The first opening is sealed by the outer sealing wall 122 of the head base 12 , and the second opening 502 is sealed by the tail cover. 13 seal, so that the leak-proof sleeve 50 and the pump body A sealed liquid storage space 105 is formed between the annular walls 11 of 10; the so-called sealing here refers to sealing the liquid inside the pump without leaking to the external space. The liquid storage space 105 is located lower than the drainage space 104 and communicates with the drainage space 104 so that the liquid in the drainage space 104 flows to the liquid storage space 105 . In this embodiment, the space formed between the leakage-proof sleeve 50 and the annular wall 11 is an annular space, but the liquid storage space 105 does not refer to a complete annular space, but a low position in the annular space. in the part of the drainage space 104 (ie, the lower half of the annular shape). A leak hole 106 (as shown in FIG. 3 ) is formed on the head base 12 between the inner sealing wall 121 and the outer sealing wall 122 . The liquid storage space 105 and the drainage space 104 are connected through the leakage hole 106 .

In this embodiment, one end of the leak-proof sleeve 50 is sleeved on the first annular protrusion 1223 of the outer sealing wall 122 , and the first sealing ring 14 is sandwiched between the first mounting ring groove 1222 and the leak-proof sleeve 50 Between the inner ring surfaces, the first opening of the leak-proof sleeve 50 is closed by the outer sealing wall 122 . In other preferred embodiments, the leakage-proof sleeve 50 can also be designed to penetrate the outer sealing wall 122 and sandwich the first sealing ring 14 between the first mounting ring groove 1222 and the leakage-proof sleeve 50 . between the torus.

The other end of the leak-proof sleeve 50 is preferably inserted through the second annular protrusion of the tail cover 13 , and the second sealing ring 15 is sandwiched between the second installation ring groove and the outer ring surface of the leak-proof sleeve 50 , thereby causing the second opening 502 of the leak-proof sleeve 50 to be closed by the tail cover 13 . Please refer to FIG. 6 . In other preferred embodiments, the leakage-proof sleeve 50A can also be designed to be sleeved outside the second annular protrusion 132A of the tail cover 13A and the second sealing ring 15A is sandwiched between the second ring protrusion 132A and the second ring protrusion 132A. The space between the second mounting ring groove 133A and the inner ring surface of the leak-proof sleeve 50A has a beautiful function.

In this embodiment, the leak-proof sleeve 50 is designed to be detachably connected to the head base 12 and the tail cover 13 to facilitate maintenance and production, but it is not limited to this. The leak-proof sleeve 50 can also be designed to be connected to the head base 12 and the tail cover 13 depending on the situation. The head base 12 or the tail cover 13 is integrally formed.

The aforementioned liquid detection unit 60 is preferably a liquid level sensing device, which is disposed in the sensor hole 131 of the tail cover 13. When the inner shaft seal 41 leaks, the liquid detection unit 60 can detect The liquid level height of the liquid in the liquid storage space 105 is measured to remind the user to arrange maintenance in a timely manner. In other In a preferred embodiment, the liquid detection unit 60 can also be a liquid leakage detector, which detects whether there is liquid in the liquid storage space 105 to learn whether there is leakage in the inner shaft seal 41 .

When the present invention is used, the water inlet 102 and the water outlet 103 are connected to the fluid pipeline (not shown in the figure) to be pressurized and transported, and the mandrel 30 is connected to the motor (not shown in the figure) to operate the pump. When leakage occurs at the inner shaft seal 41 due to natural aging or other factors, the leaked liquid will flow downward into the liquid storage space 105 through the drainage space 104 and be detected by the liquid detection unit 60 , so the user can By observing the liquid detection unit 60 to confirm the leakage condition and roughly know the leakage speed, it is helpful to arrange maintenance in a timely manner. During maintenance, the liquid in the liquid storage space 105 can be recovered together.

Please refer to FIGS. 8 and 9 . The fourth embodiment of the present invention is substantially the same as the first embodiment. The difference lies in that a connected liquid storage space 105C is formed through the wall of the leakage-proof sleeve 50C of the fourth embodiment. The sensor through holes 501C, that is to say, the total number of sensor through holes 131C and 501C is two, one of the sensor through holes 131C is formed on the tail cover 13C, and the other sensor through hole 501C is formed on the leak-proof sleeve. 50C, the liquid detection unit 60C can be installed on the tail cover 13C or the leak-proof sleeve 50C as appropriate.

In this embodiment, the liquid detection unit 60C is disposed in the sensor through hole 501C of the leak-proof sleeve 50C, whereby when the pump is installed on a non-horizontal base 91, the sensing unit 60C on the leak-proof sleeve 50C The through hole 501C will be located at the lowest point of the liquid storage space 105C, ensuring that the liquid detection unit 60C can correctly detect liquid.

The sensor through holes 131C and 501C in this embodiment can also be used as liquid recovery holes. In other preferred embodiments, a liquid recovery hole (not shown in the figure) is additionally formed on the pump, which penetrates the outer wall of the pump and communicates with the liquid storage space 105C. The liquid recovery hole is usually closed with a plug. When liquid needs to be recovered, the liquid recovery hole can be opened to facilitate recovery of the liquid in the liquid storage space 105C.

To sum up, in the present invention, the drainage space 104 is formed by providing the outer sealing wall 122, and the sealed liquid storage space 105 is formed by providing the leakage-proof sleeve 50. By this, when the inner shaft seal 41 occurs When leaking, the leaked liquid will be enclosed in the liquid storage space 105 without leaking out of the pump, and can be recycled without causing waste or polluting the environment. At the same time, the liquid detection unit 60 can detect internal leakage, thereby reminding the user to repair it as soon as possible.

The above descriptions are only preferred embodiments of the present invention, and do not limit the present invention in any form. Although the present invention has been disclosed as above in terms of preferred embodiments, it is not intended to limit the present invention. Any technical field that has A person with ordinary knowledge can use the technical content disclosed above to make some changes or modify it into equivalent embodiments with equivalent changes without departing from the scope of the technical solution of this invention. Technical Essence of the Creation Any simple modifications, equivalent changes, and modifications made to the above embodiments still fall within the scope of the technical solution of this creation.

102:Water inlet 103:Water outlet 12: Head seat 122:Outer sealing wall 13: Tail cover 16: Pump body fasteners 30: mandrel 50: Leak-proof sleeve 60:Liquid detection unit

Claims (9)

A pump with anti-leakage function, including: a pump body, which is formed with a water inlet and a water outlet; the pump body has: a ring wall surrounding the openings of two opposite ring walls; a head seat and a tail cover , which respectively cover the openings of the two annular walls of the annular wall; the headstock has: an inner sealing wall, which covers the corresponding opening of the annular wall on the annular wall, the inner sealing wall, the annular wall and the tail A liquid space is formed around the cover, and the liquid space communicates with the water inlet and the water outlet; an inner through hole is formed on the inner sealing wall; and an outer sealing wall is located on the side of the inner sealing wall opposite to the annular wall. ; The outer sealing wall and the inner sealing wall are spaced apart and sandwiched to form a drainage space; an outer through hole is formed on the outer sealing wall; the outer through hole is connected to the inner through hole of the inner sealing wall the drainage space; a pressurizing structure, which is disposed in the liquid space of the pump body and is used to pressurize the liquid in the liquid space; a mandrel that rotatably penetrates the outer penetration of the head base hole and the inner through hole and connected to the supercharging structure; an inner shaft seal and an outer shaft seal, which are respectively provided in the inner through hole and the outer through hole; a leak-proof sleeve, which is sleeved on The head seat and the tail cover are connected outside the annular wall of the pump body, so that a sealed liquid storage space is formed between the leakage-proof sleeve and the annular wall of the pump body; the liquid storage space Connect the drainage space and allow the liquid in the drainage space to flow to the liquid storage space; a liquid detection unit is connected to the liquid storage space and used to measure the liquid level height of the liquid in the liquid storage space or to detect Check whether there is liquid in the liquid storage space. The pump with anti-leakage function as described in claim 1, wherein the pump body further has a plurality of pump body fasteners, each of the pump body fasteners penetrates the tail cover and fixes the head base, thereby clamping the ring wall Between the headstock and the tail cap. The pump with anti-leakage function as described in claim 2, wherein a first mounting ring groove is formed on the outer sealing wall of the head base; a second mounting ring groove is formed on the tail cover; and the pump body has a A first sealing ring and a second sealing ring are respectively provided in the first mounting ring groove and the second mounting ring groove; a first opening and a second opening are respectively formed at opposite ends of the leakage-proof sleeve; The leakage-proof sleeve is sleeved or penetrated the outer sealing wall of the head base, and the first sealing ring is sandwiched between the first mounting ring groove and the inner or outer ring surface of the leakage-proof sleeve. time, and then the first opening of the leakage-proof sleeve is closed by the outer sealing wall; the leakage-proof sleeve is sleeved or penetrated through the tail cover, and the second sealing ring is sandwiched in the second installation ring between the groove and the inner or outer ring surface of the leak-proof sleeve, so that the second opening of the leak-proof sleeve is closed by the tail cap. The pump with leakage prevention function as described in claim 3, wherein the first mounting annular groove of the outer sealing wall of the head base is formed on an outer ring surface of the outer sealing wall; the leakage-proof sleeve sleeve The outer sealing wall is provided, and the first sealing ring is sandwiched between the first mounting ring groove and the inner ring surface of the leakage-proof sleeve. The pump with anti-leakage function as claimed in claim 4, wherein the second mounting ring groove of the tail cap is formed on an inner ring surface of the tail cap; the leak-proof sleeve penetrates the tail cap, and The second sealing ring is sandwiched between the second installation ring groove and the outer ring surface of the leakage-proof sleeve. The pump with anti-leakage function as described in claim 4, wherein the second mounting ring groove of the tail cap is formed on an outer ring surface of the tail cap; the leak-proof sleeve sleeves the tail cap, and The second sealing ring is sandwiched between the second installation ring groove and the inner ring surface of the leakage-proof sleeve. The pump with anti-leakage function as described in any one of claims 1 to 6, wherein the head base of the pump body further has a bearing wall, and a bearing through hole penetrates the bearing wall; the mandrel penetrates in sequence The bearing through hole, the outer through hole and the inner through hole; the pump body further has an end bearing, which is arranged in the bearing through hole of the bearing wall and sleeved outside the spindle. The pump with anti-leakage function as described in any one of claims 1 to 6, wherein the pump is a centrifugal pump, the pressurizing structure includes at least one impeller; the water inlet of the pump body is formed at the tail cover; the water outlet is formed on the head base. The pump with anti-leakage function as described in any one of claims 1 to 6, wherein the spindle is arranged horizontally.