A water pump structure free of disassembly and maintenance

Abstract

The present invention discloses a water pump structure that does not require disassembly and maintenance, including a water pump body, the water pump body including two halves of a pump cover that are arranged in cooperation with each other, a pump body sandwiched between the two halves of the pump cover, an impeller assembly for driving liquid movement installed inside the pump body, the impeller assembly having a fan-shaped plate for driving; an anti-rust unit for coating lubricating oil is sandwiched inside the impeller assembly, the anti-rust unit cooperates with the fan-shaped plate, the anti-rust unit is moved, the stains on the fan-shaped plate are scraped off and lubricating oil is coated on the fan-shaped plate. The present invention scrapes off impurities adhering to the fan-shaped plate by moving the anti-rust unit, the fan-shaped plate is completely exposed, the corrosion of the fan-shaped plate is reduced, the lubricating oil is infused from the end cover, and the oil moves to the inner seam through the liquid outlet to achieve contact with the fan-shaped plate, isolate the air, and minimize the corrosion of the fan-shaped plate. The lubricating oil moving out of the inner seam can also be reduced as much as possible to reduce waste.

Description

Technical Field

[0001] The invention relates to the technical field of water pumps, and in particular to a water pump structure that does not require disassembly or maintenance. Background Art

[0002] As a mechanical device, the core function of a water pump is to transport or pressurize liquids. A water pump can extract, pressurize and transport various liquids, such as clean water, sewage, oil, corrosive liquids, etc. This makes water pumps play an important role in many fields such as agricultural irrigation, urban water supply, industrial cooling, and sewage treatment.

[0003] During the use of the water pump, due to contact with air, moisture, chemicals, etc., it is easy to rust and corrode. Rust and corrosion will not only cause damage to the surface of the water pump, but will also further affect the internal structure and function of the water pump, thereby shortening the service life of the water pump. By taking effective anti-rust measures, the service life of the water pump can be significantly extended, the frequency of replacement and maintenance can be reduced, and the cost of use can be reduced. The impeller of the water pump is exposed to water for a long time and is often corroded by substances such as mud, dirt, etc. These substances will adhere to the surface of the impeller to form a layer of dirt, which further accelerates the corrosion and rust process of the impeller. At the same time, if the water pump is stored in a humid environment for a long time, the risk of rust on the impeller will also increase. Therefore, the water pump needs to be maintained after use to prevent it from rusting, but the impeller inside it is difficult to access. During maintenance, the water pump needs to be disassembled and the impeller inside it needs to be maintained. Disassembly can easily lead to reduced sealing performance and affect the water pump's delivery of liquid. The impeller inside the water pump needs to be maintained without disassembling it. The easiest way is to directly pour lubricating oil into the water pump to cover the impeller of the water pump. However, there are still some local positions that are difficult to be covered with lubricating oil. Even if they can be covered, a large amount of lubricating oil is required. Summary of the invention

[0004] The object of the present invention is to provide a water pump structure that does not require disassembly and maintenance, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a water pump structure that does not require disassembly and maintenance, comprising a water pump body, the water pump body comprising two halves of a pump cover that are arranged in cooperation with each other, a pump body being sandwiched between the two halves of the pump cover, an impeller assembly for driving liquid movement being installed inside the pump body, the impeller assembly having a sector plate for driving;

[0006] The impeller assembly is internally clamped with an anti-rust unit for coating lubricating oil, and the anti-rust unit cooperates with the fan-shaped plate. The anti-rust unit is moved to scrape off the stains on the fan-shaped plate and coat the lubricating oil at the same time.

[0007] Furthermore, the pump body is arranged in two halves, and a sealing ring 2 for sealing is clamped between the two halves of the pump body, a sealing ring 1 for sealing is adhered to both sides of the pump body, and a support ring is integrally provided on the inner side of the two halves of the pump cover, the support ring is squeezed with the sealing ring 1, and the two halves of the pump body are clamped by the two halves of the pump cover.

[0008] Furthermore, the outer side of the pump body has a water outlet, and the impeller assembly also includes circular plate 1 and circular plate 2. The fan-shaped plate is fixed between circular plate 1 and circular plate 2, and circular plate 1 and circular plate 2 are respectively in contact with the inner walls on both sides of the pump body. One side of circular plate 1 is provided with a water inlet connected to the outside, and circular plate 2 is fixed to the output end of the motor. The water outlet is connected to the space between circular plate 1 and circular plate 2, so that the impeller assembly rotates to drive water to move from the water inlet to the water outlet.

[0009] Furthermore, the rust-proof unit includes a cavity layer and a cavity cover, the cavity cover is fixed on the outside of the cavity layer, a connecting pipe connected to the inside of the cavity layer is fixed on the outside of the cavity cover, the outer cover of the connecting pipe is provided with a detachable end cover, the connecting pipe extends from the water inlet, the cavity layer and the cavity cover are penetrated by an arc groove, the arc groove cooperates with the fan-shaped plate, the inner side of the cavity layer is integrally formed with a protruding partition, the partition is distributed along the edge of the arc groove, and is used to block the connection between the arc groove and the inside of the cavity layer, an inner seam extending along the arc groove is provided on the inner wall of the arc groove, and a plurality of liquid outlets connected to the inside of the cavity layer are also provided on the inner wall of the arc groove, and the plurality of liquid outlets are connected through the inner seam, and the lubricating oil seeping from the inner seam is applied to the fan-shaped plate.

[0010] Furthermore, the inner wall of the arc-shaped groove fits with the outer wall of the sector plate, and the corners of the arc-shaped groove are right angles, which are used to scrape off the stains on the sector plate.

[0011] Furthermore, the interior of the cavity layer is also provided with an external rust-proof part, and the outer wall of the arc outside the cavity layer is provided with a second liquid outlet connected to the interior, and the inner wall of the cavity layer is also integrally formed with a protruding layer, and the second liquid outlet penetrates the protruding layer, and the external rust-proof part includes a stopper circle for blocking the second liquid outlet, and the stopper circle is arranged in the cavity layer, and the outer side of the protruding layer has a semicircular opening, and the stopper circle is embedded in the semicircular opening of the protruding layer, and outer support plates are integrally formed on both sides of the stopper circle, and a support spring is fixed between the outer support plate and the inner wall of the cavity layer, and the support spring is used to keep the stopper circle in cooperation with the protruding layer;

[0012] A pull rope is also fixed to the outside of the retaining circle, and a support rod is fixed to the end of the pull rope. Pulling the support rod can make the retaining circle move inward, open the second liquid outlet, and make the lubricating oil move from the outer side of the cavity layer arc.

[0013] Furthermore, the support rod sleeve is arranged in the connecting pipe, and a circle of threaded sleeve is fixed on the outside of the support rod. The threaded sleeve is threadedly connected to the connecting pipe. Both ends of the threaded sleeve are through-set for adjusting lubricating oil. The outer end of the support rod is also provided with a driving port, and the driving port is used to cooperate with a screwdriver.

[0014] Furthermore, a cutting edge is provided on the inner side of the circular plate, and a metal blade is fixed on the outer side of the cavity cover. The metal blade fits with the inner edge of the fan-shaped plate, and the metal blade is triangular in shape with its edge tilted outward. When the metal blade moves to the end, it cooperates with the cutting edge.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0016] 1. Move the anti-rust unit to scrape off the impurities adhering to the fan-shaped plate, completely expose the fan-shaped plate, reduce the corrosion to the fan-shaped plate, infuse lubricating oil from the end cover, move it to the inner seam through the liquid outlet, and achieve contact with the fan-shaped plate to isolate the air and minimize the corrosion of the fan-shaped plate. The lubricating oil moving out of the inner seam can also be used as little as possible to reduce waste.

[0017] 2. The water inlet can drive the connecting pipe to move, avoiding disassembly of the water pump body and loosening of parts.

[0018] 3. The stopper circle blocks the second liquid outlet under the action of the supporting spring, and the pull rope is pulled to separate the stopper circle from the protruding layer, so that the lubricating oil is thrown out along the second liquid outlet to coat the inside of the pump body, coating the pump body to the greatest extent, reducing the amount of lubricating oil and avoiding disassembly of the water pump body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the decomposed structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the impeller assembly of the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of the rust-proof unit of the present invention;

[0024] Figure 5 The present invention Figure 4 A is a schematic diagram of the partially enlarged structure of the middle part;

[0025] Figure 6 It is a schematic diagram of the decomposed structure of the rust-proof unit of the present invention;

[0026] Figure 7 The present invention Figure 6 A schematic diagram of the partially enlarged structure of B in the middle;

[0027] Figure 8 It is a schematic diagram of a partial cross-sectional structure of a connecting pipe of the present invention;

[0028] Fig. 9 This is a schematic diagram of the inner structure of a circular plate of the present invention;

[0029] Fig.10 It is a schematic diagram of the cross-sectional structure of the metal blade of the present invention.

[0030] In the figure: 1. water pump body; 2. pump cover; 21. support ring; 3. pump body; 31. water outlet; 32. sealing ring 1; 33. sealing ring 2; 4. impeller assembly; 41. circular plate 1; 42. circular plate 2; 43. fan-shaped plate; 44. water inlet; 45. cutting edge; 5. rust-proof unit; 51. cavity layer; 52. cavity cover; 53. connecting pipe; 54. end cover; 55. arc groove; 56. inner seam; 57. liquid outlet 1; 58. partition; 59. outer rust-proof part; 591. liquid outlet 2; 592. protruding layer; 593. stop circle; 594. outer support plate; 595. support spring; 596. pull rope; 597. support rod; 598. threaded sleeve; 599. drive port; 6. metal blade. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-Figure 10The present invention provides a technical solution: a water pump is a machine used to transport liquid or pressurize liquid. It plays a vital role in many fields. The water pump needs to be cleaned daily. When the water pump is not used for a long time, the water pump should be disassembled, anti-rust treated, reassembled and properly stored. When storing, the liquid medium in the pump body 3 should be drained, and the pump parts should be disassembled and wiped with a clean cloth and smeared with anti-rust oil. The assembled water pump should be placed in a dry and ventilated place for proper storage. After disassembly, avoid using sharp tools to scratch the surface of the water pump to avoid damaging the coating and seals. Based on this, a water pump structure that does not require disassembly and maintenance is proposed, including a water pump body 1, the water pump body 1 includes two halves of a pump cover 2 that are arranged in cooperation with each other, a pump body 3 is clamped between the two halves of the pump cover 2, and an impeller assembly 4 for driving the movement of liquid is installed inside the pump body 3. The impeller assembly 4 has a fan-shaped plate 43 for driving, and the liquid is driven to be transported by the rotation of the impeller assembly 4;

[0033] The impeller assembly 4 contains an anti-rust unit 5 for applying lubricating oil. The anti-rust unit 5 cooperates with the fan-shaped plate 43. The anti-rust unit 5 is moved to scrape off the stains on the fan-shaped plate 43 and apply lubricating oil at the same time, so that the fan-shaped plate 43 remains relatively clean.

[0034] The pump body 3 is arranged in two halves, and a sealing ring 2 33 is clamped between the two halves of the pump body 3 for sealing. A sealing ring 1 32 is adhered to both sides of the pump body 3 for sealing. A support ring 21 is integrally provided on the inner side of the two halves of the pump cover 2. The support ring 21 is squeezed with the sealing ring 1 32. The two halves of the pump body 3 are clamped by the two halves of the pump cover 2, and the outer sides of the two halves of the pump body 3 have a sealing effect to prevent liquid leakage.

[0035] The outer side of the pump body 3 is provided with a water outlet 31, and the liquid entering the pump body 3 moves out from the water outlet 31. The impeller assembly 4 also includes a circular plate 1 41 and a circular plate 2 42. The fan-shaped plate 43 is fixed between the circular plate 1 41 and the circular plate 2 42. The circular plate 1 41 and the circular plate 2 42 are respectively in contact with the inner walls on both sides of the pump body 3. A water inlet 44 connected to the outside is opened on one side of the circular plate 1 41. The circular plate 2 42 is fixed to the output end of the motor. The circular plate 2 42 is driven by the motor to rotate to realize the movement of the impeller assembly 4. Based on this, the fan-shaped plate 43 drives the liquid to be transported. The water outlet 31 is connected to the space between the circular plate 1 41 and the circular plate 2 42, so that the impeller assembly 4 rotates and drives the water to move from the water inlet 44 to the water outlet 31.

[0036] In order to prevent the impeller assembly 4 from rusting, and to prevent rusting during long-term storage, the rust-proof unit 5 includes a cavity layer 51 and a cavity cover 52. The cavity cover 52 is fixed to the outside of the cavity layer 51. The cavity layer 51 is used to contain lubricating oil. A connecting pipe 53 connected to the inside of the cavity layer 51 is fixed to the outside of the cavity cover 52. A detachable end cover 54 is provided on the outer cover of the connecting pipe 53. The connecting pipe 53 is used to inject lubricating oil into the cavity layer 51. When the impeller assembly 4 is working, the end cover 54 can be connected to the cavity layer 51. The pipe 53 is blocked to prevent liquid from entering the interior. The connecting pipe 53 extends from the water inlet 44, so that the connecting pipe 53 is convenient to connect with the external pipeline. The cavity layer 51 and the cavity cover 52 are penetrated with an arc groove 55. The arc groove 55 cooperates with the fan plate 43, so that the fan plate 43 is embedded in the arc groove 55. When the rust-proof unit 5 moves along the fan plate 43, the fan plate 43 is cleaned by the inner wall edge of the arc groove 55, and the impurities adhering to the fan plate 43 are scraped off, so that the fan plate 43 can be cleaned, the inner side of the cavity layer 51 is integrally formed with a protruding partition 58, the partition 58 is distributed along the edge of the arc-shaped groove 55, the partition 58 is used to separate the arc-shaped groove 55 from the inside of the cavity layer 51, to prevent the inside of the cavity layer 51 from directly communicating with the arc-shaped groove 55, and to prevent the arc-shaped groove 55 from communicating with the inside of the cavity layer 51. The inner wall of the arc-shaped groove 55 is provided with an inner slit 56 extending along the arc-shaped groove 55, and the inner wall of the arc-shaped groove 55 is also provided with a plurality of slots communicating with the inside of the cavity layer 51. The liquid outlet 57 and the multiple liquid outlets 57 are connected through the inner slit 56. The lubricating oil seeping out of the inner slit 56 is coated on the fan-shaped plate 43. When the lubricating oil moves inward from the connecting pipe 53 and moves out from the liquid outlet 57, the outer side is blocked by the fan-shaped plate 43, so the lubricating oil fills the inner slit 56, so that the contact area between the lubricating oil and the fan-shaped plate 43 is large, and when the anti-rust unit 5 moves, the entire fan-shaped plate 43 is coated with the lubricating oil to fully isolate the air.

[0037] The inner wall of the arc groove 55 fits with the outer wall of the fan-shaped plate 43. The corners of the arc groove 55 are right angles, which are used to scrape off the stains on the fan-shaped plate 43. The right-angled part of the edge of the arc groove 55 contacts the fan-shaped plate 43, cleaning the stains on the outer wall of the fan-shaped plate 43 like a scraper.

[0038] The cavity layer 51 is further provided with an external rust-proof part 59. A second liquid outlet 591 communicating with the interior is provided on the outer wall of the arc outside the cavity layer 51. A protruding layer 592 is also integrally formed on the inner wall of the cavity layer 51. The second liquid outlet 591 penetrates the protruding layer 592. The external rust-proof part 59 includes a stopper circle 593 for blocking the second liquid outlet 591. The stopper circle 593 is provided in the cavity layer 51. The protruding layer 592 has a semicircular opening on the outer side. The stopper circle 593 is embedded in the semicircular opening of the protruding layer 592. External support plates 594 are integrally formed on both sides of the stopper circle 593. A support spring 595 is fixed between the external support plate 594 and the inner wall of the cavity layer 51. The support spring 595 is used to keep the stopper circle 593 matched with the protruding layer 592.

[0039] A pull rope 596 is also fixed to the outside of the blocking circle 593, and a support rod 597 is fixed to the end of the pull rope 596. Pulling the support rod 597 can make the blocking circle 593 move inward, open the second liquid outlet 591, and allow the lubricating oil to move from the arc-shaped outer side of the cavity layer 51. The function of the blocking circle 593 is to block the second liquid outlet 591 to prevent liquid from entering from the second liquid outlet 591 and causing blockage during the operation of the impeller assembly 4. By pulling the pull rope 596, the blocking circle 593 is moved to open the second liquid outlet 591, so that liquid can be discharged from the second liquid outlet 591, and the lubricating oil can be discharged from the second liquid outlet 591, and can be thrown onto the inner wall of the pump body 3 during the rotation of the impeller assembly 4. The pull rope 596 is subsequently reset, and the blocking circle 593 is also reset under the action of the support spring 595.

[0040] The support rod 597 is sleeved in the connecting pipe 53, and a circle of threaded sleeve 598 is fixed on the outside of the support rod 597. The threaded sleeve 598 is threadedly connected to the connecting pipe 53. Both ends of the threaded sleeve 598 are through-set for adjusting the lubricating oil. A driving port 599 is also provided at the outer end of the support rod 597. The driving port 599 is used to cooperate with a screwdriver. By rotating the threaded sleeve 598, the position of the threaded sleeve 598 in the connecting pipe 53 is changed, so as to realize whether the pull rope 596 is pulled or not, and to maintain the state of the pull rope 596, and it will not block the entry of lubricating oil.

[0041] A cutting edge 45 is provided on the inner side of the circular plate 41, and a metal cutting edge 6 is fixed on the outer side of the cavity cover 52. The metal cutting edge 6 is fitted with the inner edge of the fan-shaped plate 43, and the metal cutting edge 6 is triangular in shape, with its cutting edge tilted outward. When the metal cutting edge 6 moves to the end, it cooperates with the cutting edge 45. When the anti-rust unit 5 moves along the fan-shaped plate 43, the metal cutting edge 6 also moves in contact with the fan-shaped plate 43, and the tip of the triangular metal cutting edge 6 moves along the fan-shaped plate 43, and the stuck belt is squeezed against the cutting edge, so that the belt can be broken, which is convenient for discharging the belt, wherein the particulate matter can be blocked by the filter screen on the outside, while the belt can partially pass through the filter screen and is easily stuck on the fan-shaped plate 43.

[0042] The working principle of the present invention is as follows: the pump body 1 is used to transport the liquid, wherein the transport is driven by the rotation of the impeller assembly 4. If the water contains impurities, such as stones, sand, mud, etc., these impurities will enter the pump body 1 with the water flow and directly impact the impeller assembly 4, causing the surface of the impeller assembly 4 to be damaged, worn, and deformed, and may even cause cavitation corrosion, forming cavitation damage. This damage will not only reduce the working efficiency of the impeller, but may also affect the overall performance and service life of the pump body 1. It is difficult to completely avoid the impeller assembly 4 from being damaged, and the impeller assembly 4 after being damaged makes it easier for the accumulated water to remain, and also increases the surface area of ​​the impeller assembly 4. Even if it is coated with a protective layer, it is difficult to avoid rust after being damaged, so it needs to be maintained after completion.

[0043] During maintenance, the anti-rust unit 5 is moved. Since the arc groove 55 clamps the fan plate 43, impurities adhering to the fan plate 43 can be scraped off during the movement, so that the fan plate 43 is completely exposed, reducing corrosion on the fan plate 43 and avoiding affecting the driving action of the water pump body 1.

[0044] At the same time, the end cover 54 is opened, and lubricating oil is injected from the end cover 54, so that the lubricating oil moves along the inside of the cavity layer 51, and moves to the inner seam 56 through the liquid outlet 57 to contact the fan plate 43, so that the lubricating oil is applied to the fan plate 43, which can isolate the air and minimize the corrosion of the fan plate 43. In addition, after scraping off the impurities on the fan plate 43, it can be ensured that the lubricating oil contacts the fan plate 43, and the lubricating oil moving out of the inner seam 56 can also be used as little as possible to reduce waste.

[0045] The connecting pipe 53 can be driven to move through the water inlet 44, thereby avoiding disassembly of the water pump body 1 and preventing looseness between parts.

[0046] During the operation of the impeller assembly 4, the inner seam 56 in the arc groove 55 and the liquid outlet 1 57 are blocked by the fan-shaped plate 43, and therefore will not be affected by the transmitted liquid. Even if an impact occurs, only the liquid enters the cavity layer 51, and no impurities enter. The outer liquid outlet 2 591 is easy for impurities to enter, so a blocking circle 593 is set to block the liquid outlet 2 591 under the action of the support spring 595. In addition, by inserting a screwdriver into the drive port 599, the support rod 597 can be rotated to pull the pull rope 596 to separate the blocking circle 593 from the protruding layer 592 and open the liquid outlet 2 591. When the fan-shaped plate 43 rotates, the lubricating oil can be thrown out along the liquid outlet 2 591 to coat the inside of the pump body 3. The thrown-out lubricating oil can be relatively dispersed, so that the pump body 3 can be coated to the greatest extent, reducing the amount of lubricating oil used and avoiding disassembly of the water pump body 1.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0048] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A water pump structure that does not require disassembly and maintenance, comprising a water pump body (1), characterized in that: The water pump body (1) comprises two halves of a pump cover (2) which are arranged in cooperation with each other, a pump body (3) being sandwiched between the two halves of the pump cover (2), an impeller assembly (4) for driving liquid movement being installed inside the pump body (3), and the impeller assembly (4) having a sector plate (43) for driving; The impeller assembly (4) has an anti-rust unit (5) for applying lubricating oil in its interior, the anti-rust unit (5) cooperates with the fan-shaped plate (43), and the anti-rust unit (5) is moved to scrape off the stains on the fan-shaped plate (43) and apply lubricating oil at the same time; The pump body (3) has a water outlet (31) on its outer side, and the impeller assembly (4) further comprises a circular plate 1 (41) and a circular plate 2 (42). The fan-shaped plate (43) is fixed between the circular plate 1 (41) and the circular plate 2 (42). The circular plate 1 (41) and the circular plate 2 (42) are respectively in contact with the inner walls of both sides of the pump body (3). A water inlet (44) communicating with the outside is provided on one side of the circular plate 1 (41). The circular plate 2 (42) is fixed to the output end of the motor. The water outlet (31) is in communication with the space between the circular plate 1 (41) and the circular plate 2 (42), so that the impeller assembly (4) rotates to drive water to move from the water inlet (44) to the water outlet (31). The rust-proof unit (5) comprises a cavity layer (51) and a cavity cover (52). The cavity cover (52) is fixed to the outside of the cavity layer (51). A connecting pipe (53) communicating with the inside of the cavity layer (51) is fixed to the outside of the cavity cover (52). A detachable end cover (54) is provided on the outside of the connecting pipe (53). The connecting pipe (53) extends from a water inlet (44). An arc groove (55) is formed through the cavity layer (51) and the cavity cover (52). The arc groove (55) cooperates with the fan-shaped plate (43). The inner side of the cavity layer (51) is integrally formed with a protruding partition (58), the partition (58) being distributed along the edge of the arc-shaped groove (55) and being used to block the arc-shaped groove (55) from being connected to the interior of the cavity layer (51); an inner slit (56) extending along the arc-shaped groove (55) is provided on the inner wall of the arc-shaped groove (55); a plurality of liquid outlets (57) connected to the interior of the cavity layer (51) are also provided on the inner wall of the arc-shaped groove (55); the plurality of liquid outlets (57) are connected to each other through the inner slit (56); and lubricating oil seeping from the inner slit (56) is applied to the fan-shaped plate (43); The cavity layer (51) is further provided with an external rust-proof portion (59) inside. A second liquid outlet (591) communicating with the inside is provided on the outer wall of the outer arc of the cavity layer (51). The inner wall of the cavity layer (51) is further integrally formed with a protruding layer (592). The second liquid outlet (591) penetrates the protruding layer (592). The external rust-proof portion (59) comprises a stopper circle (593) for blocking the second liquid outlet (591). The stopper circle (593) is arranged inside the cavity layer (51). The outer side of the protruding layer (592) has a semicircular opening. The stopper circle (593) is embedded in the semicircular opening of the protruding layer (592). External support plates (594) are integrally formed on both sides of the stopper circle (593). A support spring (595) is fixed between the external support plate (594) and the inner wall of the cavity layer (51). The support spring (595) is used to keep the stopper circle (593) in cooperation with the protruding layer (592). A pull rope (596) is also fixed to the outside of the retaining circle (593), and a support rod (597) is fixed to the end of the pull rope (596). Pulling the support rod (597) can cause the retaining circle (593) to move inward, thereby opening the second liquid outlet (591) and allowing the lubricating oil to move from the outer side of the arc of the cavity layer (51).

2. The water pump structure free of disassembly and maintenance according to claim 1 is characterized in that: The pump body (3) is provided in two halves, a sealing ring (33) for sealing is sandwiched between the two halves of the pump body (3), a sealing ring (32) for sealing is adhered to both sides of the pump body (3), a supporting ring (21) is integrally provided on the inner side of the two halves of the pump cover (2), the supporting ring (21) is squeezed with the sealing ring (32), and the two halves of the pump body (3) are sandwiched by the two halves of the pump cover (2).

3. The water pump structure free of disassembly and maintenance according to claim 1 is characterized in that: The inner wall of the arc-shaped groove (55) is in contact with the outer wall of the sector plate (43), and the corners of the arc-shaped groove (55) are right angles, which are used to scrape off stains on the sector plate (43).

4. The water pump structure free of disassembly and maintenance according to claim 1 is characterized in that: The support rod (597) is sleeved in the connecting tube (53); a threaded sleeve (598) is fixed to the outside of the support rod (597); the threaded sleeve (598) is threadedly connected to the connecting tube (53); both ends of the threaded sleeve (598) are through-set for adjusting lubricating oil; a driving port (599) is also provided at the outer end of the support rod (597); the driving port (599) is used to cooperate with a screwdriver.

5. The water pump structure free of disassembly and maintenance according to claim 1 is characterized in that: A cutting edge (45) is provided on the inner side of the circular plate (41), and a metal cutting edge (6) is fixed on the outer side of the cavity cover (52). The metal cutting edge (6) is in contact with the inner edge of the sector plate (43), and the metal cutting edge (6) is triangular in shape, with its edge tilted outwards. When the metal cutting edge (6) moves to the end, it is in contact with the cutting edge (45).

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