An oil pump with leak-proof function

Abstract

This utility model discloses an oil pump with a leak-proof function, which includes an oil pump body, a filter mechanism, and a leak-proof mechanism. The oil pump body has an oil inlet pipe and an oil outlet pipe on both sides. A sleeve is fixed to the outer surface of the oil outlet pipe. A first threaded groove is provided on the inner wall of the oil inlet pipe opening. The filter mechanism includes a connecting pipe. A second threaded groove adapted to the first threaded groove is opened on the outer wall of one side of the connecting pipe opening. Stainless steel filter elements and filter components are spaced apart inside the connecting pipe. The leak-proof mechanism includes an L-shaped collection pipe. Both ends of the collection pipe are connected to the sleeve and the inside of the oil pump body, respectively. A return column is provided at the top of the collection pipe. A frustum-shaped concave hole is opened at the top of the return column. A return channel connected to the frustum-shaped concave hole is opened in the middle of the return column. A leak-proof component is provided below the return column. This utility model effectively prevents oil pump leakage by filtering impurities and returning leaked oil to the inside of the oil pump body.

Description

Technical Field

[0001] This utility model relates to the field of oil pump technology, and in particular to an oil pump with anti-leakage function. Background Technology

[0002] Oil pumps are commonly used in lubrication systems. The function of an oil pump is to increase the oil pressure to a certain level and force it to be delivered to the moving surfaces of various engine parts, thus providing forced oil supply to the friction surfaces.

[0003] Currently, oil pumps often leak oil during use due to the following reasons: 1. The oil pump itself vibrates during operation, causing side leakage at the connection points. Oil adheres to the pump, increasing oil consumption and raising operating costs. 2. The oil pump contains many impurities, which can easily damage internal components and lead to leaks. Therefore, we propose an oil pump with leak-proof functionality. Utility Model Content

[0004] The problem that this invention aims to solve is that existing oil pumps do not have a leak-proof function.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an oil pump with anti-leakage function, comprising an oil pump body, a filter mechanism, and an anti-leakage mechanism. An oil inlet pipe and an oil outlet pipe are respectively provided on both sides of the oil pump body. A sleeve is fixedly connected to the outer surface of the oil outlet pipe. A first threaded groove is provided on the inner wall of the oil inlet pipe opening. The filter mechanism includes a connecting pipe. A second threaded groove adapted to the first threaded groove is opened on the outer wall of one side of the connecting pipe opening. Stainless steel filter elements and filter components are respectively arranged at intervals inside the connecting pipe. The anti-leakage mechanism includes an L-shaped collecting pipe. Both ends of the collecting pipe are connected to the sleeve and the inside of the oil pump body, respectively. A return column is provided above the inside of the collecting pipe. A frustum-shaped concave hole is opened at the top of the return column. A return channel communicating with the frustum-shaped concave hole is opened in the middle of the return column. An anti-leakage component is provided below the return column.

[0006] As a preferred embodiment of the oil pump with anti-leakage function described in this utility model, the filter assembly includes an installation pipe and a non-woven filter cartridge. A third threaded groove is provided on the outer wall of the pipe opening on one side of the installation pipe, and a fourth threaded groove adapted to the third threaded groove is provided on the inner wall of the pipe opening on one side of the connecting pipe. An annular groove is provided at one end of the installation pipe, and the inlet end of the non-woven filter cartridge is movably disposed in the annular groove.

[0007] As a preferred embodiment of the oil pump with anti-leakage function described in this utility model, the annular groove and the inlet end of the non-woven filter cartridge are fixed by a fixing member, the fixing member including an annular cover, the bottom end of the annular cover being provided with a rubber sealing ring, and the rubber sealing ring being interference-fitted with the annular groove and the inlet end of the non-woven filter cartridge.

[0008] As a preferred embodiment of the oil pump with anti-leakage function described in this utility model, the anti-leakage component includes a frustum-shaped sealing plug disposed at the bottom end of the return channel, limiting plates are respectively disposed on both sides of the sealing plug, and limiting holes are opened on the end face of the limiting plates. Support plates are respectively disposed on both sides of the inner wall of the collection pipe, and a limiting post is disposed on the top of the support plate. The limiting post passes through the limiting hole, and a spring is disposed between the support plate and the limiting plate.

[0009] As a preferred embodiment of the oil pump with anti-leakage function described in this utility model, the oil pump body is further provided with an oil collection box with an upward opening below it. An installation frame is provided at the opening of the oil collection box, and a filter screen is provided inside the installation frame. The top two sides of the installation frame are respectively provided with overlapping plates that can be movably connected to the opening of the oil collection box. An installation bracket is detachably connected to the outer wall of the oil collection box, and the top of the installation bracket is fixedly connected to the outer wall of the oil pump body.

[0010] The beneficial effects of this utility model are as follows: This utility model introduces oil through a connecting pipe that is threaded to the oil inlet pipe. The oil is filtered twice by the stainless steel filter and filter assembly inside the connecting pipe, which reduces the amount of impurities in the oil entering the oil pump body and avoids oil leakage caused by excessive impurities damaging the oil pump. A collection pipe is set between the sleeve on the oil drain pipe and the oil pump body. If an oil leak occurs, the oil can return to the oil pump body from the collection pipe. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0012] Figure 1 This is a schematic diagram of the overall structure of an oil pump with leak-proof function.

[0013] Figure 2 This is a schematic diagram showing the fit between the oil pump body and the connecting pipe in an oil pump with leak-proof function.

[0014] Figure 3This is a cross-sectional view of a leak-proof component in the collection pipe of an oil pump with leak-proof function.

[0015] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0016] Figure 5 This is a cross-sectional view of the filter mechanism in the oil inlet pipe of an oil pump with leak-proof function.

[0017] Figure 6 This is a schematic diagram of the filter mechanism in an oil pump with leak-proof function.

[0018] Figure 7 This is a schematic diagram of the structure of the mounting pipe, ring cover, and rubber sealing ring in an oil pump with leak-proof function. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] Reference Figures 1-7 This embodiment is an oil pump with a leak-proof function, including an oil pump body 100, a filter mechanism 200, and a leak-proof mechanism 300. An oil inlet pipe 101 and an oil outlet pipe 102 are respectively provided on both sides of the oil pump body 100. A sleeve 103 is fixedly connected to the outer surface of the oil outlet pipe 102. A first threaded groove 101a is provided on the inner wall of the inlet of the oil inlet pipe 101. The filter mechanism 200 includes a connecting pipe 201. A second threaded groove 201a, which matches the first threaded groove 101a, is formed on the outer wall of one side of the connecting pipe 201. Stainless steel filter elements 202 and filter components 203 are respectively arranged at intervals inside the pipe 201. The leak prevention mechanism 300 includes an L-shaped collection pipe 301. The two ends of the collection pipe 301 are connected to the sleeve 103 and the inside of the oil pump body 100, respectively. A return column 302 is arranged at the top of the collection pipe 301. A frustum-shaped concave hole 302a is opened at the top of the return column 302. A return channel 302b connected to the frustum-shaped concave hole 302a is opened in the middle of the return column 302. The leak prevention component 303 is arranged below the return column 302.

[0021] The oil enters through the connecting pipe 201 and passes through the stainless steel filter 202 and the filter assembly 203 twice to filter out impurities. This prevents impurities from accumulating too much inside the oil pump body 100, which could damage the oil pump body 100 and cause oil leakage. The oil is then transported to external components through the oil pump body 100, the drain pipe 102, and the sleeve 103. When a leak occurs, the collected pipe 301 connects the sleeve 103 and the oil pump body 100, allowing the leaked oil to flow back to the collected pipe 301. This oil then pushes the leak-proof assembly 303 away from the return channel 302b along the frustum-shaped concave hole 302a on the return column 302 and the return channel 302b, preventing the return channel 302b from being blocked and allowing the oil to return to the oil pump body 100.

[0022] In this embodiment, the filter assembly 203 includes an installation tube 203a and a non-woven filter cartridge 203b. A third threaded groove 203c is provided on the outer wall of the tube opening on one side of the installation tube 203a, and a fourth threaded groove 201b adapted to the third threaded groove 203c is provided on the inner wall of the tube opening on one side of the connecting tube 201. An annular groove 203d is opened at one end of the installation tube 203a, and the inlet end of the non-woven filter cartridge 203b is movably disposed in the annular groove 203d.

[0023] Since the third threaded groove 203c on the mounting pipe 203a is compatible with the fourth threaded groove 201b on the connecting pipe 201, the mounting pipe 203a can be threadedly connected to the connecting pipe 201.

[0024] In this embodiment, the annular groove 203c and the inlet end of the nonwoven filter cartridge 203b are fixed by a fastener. The fastener includes an annular cover 203e, and a rubber sealing ring 203f is provided at the bottom of the annular cover 203e. The rubber sealing ring 203f is interference-fitted with the annular groove 203c and the inlet end of the nonwoven filter cartridge 203b.

[0025] Since the non-woven filter cartridge 203b is flexible, the inlet end of the non-woven filter cartridge 203b is placed in the annular groove 203c, and the rubber sealing ring 203f at the bottom of the ring cover 203e is pressed into the annular groove 203c. Due to the interference fit between the rubber sealing ring 203f, the annular groove 203c, and the inlet end of the non-woven filter cartridge 203b, the non-woven filter cartridge 203b can be fixed. The sieve hole diameter of the non-woven filter cartridge 203b is smaller than that of the stainless steel filter sheet 202, so it can filter impurities of different diameters in the oil. When the non-woven filter cartridge 203b needs to be replaced after a period of use, the connecting pipe 201 is rotated out of the oil inlet pipe 101, and then the installation pipe 203a is rotated out of the connecting pipe 201. The rubber sealing ring 203f is pulled out from the annular groove 203c, and the used non-woven filter cartridge 203b is replaced and reinstalled.

[0026] In this embodiment, the leak-proof component 303 includes a frustum-shaped sealing plug 303a disposed at the bottom end of the return channel 302b. Limiting plates 303b are respectively disposed on both sides of the sealing plug 303a. Limiting holes are opened on the end face of the limiting plates 303b. Supporting plates 303c are respectively disposed on both sides of the inner wall of the collection pipe 301. Limiting posts 303d are disposed on the top of the supporting plates 303c. Limiting posts 303d penetrate the limiting holes. A spring 303e is disposed between the supporting plates 303c and the limiting plates 303b.

[0027] When the leaked oil flows back to the collection pipe 301, it pushes the sealing plug 303a away from the return channel 302b along the frustum-shaped concave hole 302a on the return column 302 and the return channel 302b, preventing the return channel 302b from being blocked by the sealing plug 303a, so that the oil returns to the oil pump body 100 and the leaked oil is recovered. The sealing plug 303a can also prevent the oil inside the oil pump body 100 from entering the sleeve 103 from the return channel 302b.

[0028] In this embodiment, an oil collection box 400 with an upward opening is also provided below the oil pump body 100. An installation frame 401 is provided at the opening of the oil collection box 400. A filter screen 402 is provided inside the installation frame 401. An overlapping plate 403 that is movably connected to the opening of the oil collection box 403 is provided on both sides of the top of the installation frame 401. An installation bracket 404 is detachably connected to the outer wall of the oil collection box 400. The top of the installation bracket 404 is fixedly connected to the outer wall of the oil pump body 100.

[0029] When the oil pump body 100 is still leaking oil, the oil drips down the outer wall of the oil pump body 100. When the oil drips into the oil collection box 400, it is first filtered by the filter screen 402 on the mounting frame 401. The filtered oil is collected by the oil collection box 400. After long-term use, the mounting frame 401 and the filter screen 402 can be cleaned by removing the overlapping plate 403 and then put back in their original positions.

[0030] Working principle: The oil enters through the connecting pipe 201 and is filtered sequentially through the stainless steel filter 202 and the non-woven fabric filter cartridge 203b in the filter assembly 203. The sieve diameter of the non-woven fabric filter cartridge 203b is smaller than that of the stainless steel filter 202, so it can filter impurities of different diameters in the oil, preventing excessive accumulation of impurities inside the oil pump body 100, which could damage the oil pump body 100 and cause oil leakage. The oil is then transported to external components sequentially through the oil pump body 100, the drain pipe 102, and the sleeve 103. When a leak occurs, because the collection pipe 301 connects the sleeve 103 and the oil pump body 100, the leaked oil can flow back to the collection pipe 301. Along the frustum-shaped recess 302a and return channel 302b on the return column 302, it pushes the sealing plug 303a away from the return channel 302b, preventing the return channel 302b from being blocked by the sealing plug 303a. This allows the oil to return to the oil pump body 100, recovering the leaked oil. The sealing plug 303a also prevents oil inside the oil pump body 100 from entering the sleeve 103 through the return channel 302b. When cleaning and replacing the stainless steel filter disc 202 and filter assembly 203 inside the connecting pipe 201 after prolonged use, and replacing the non-woven filter cartridge 203b with a new one, rotate the connecting pipe 201 to detach it from the oil inlet pipe 101. Then, rotate the installation pipe 203a to detach it from the connecting pipe 201. Pull out the rubber sealing ring 203f from the annular groove 203c. Replace the non-woven filter cartridge 203b with a new one. Place the inlet end of the new non-woven filter cartridge 203b into the annular groove 203c. Then, remove the rubber sealing ring 203f from the bottom of the ring cover 203e. Press the pump into the annular groove 203c, then thread the mounting pipe 203a to the connecting pipe 201, and re-thread the connecting pipe 201 to the oil inlet pipe 101. When all oil leakage prevention measures fail, the oil drips down the outer wall of the oil pump body 100. When the oil drips into the oil collection box 400, it is first filtered by the filter screen 402 on the mounting frame 401. The filtered oil is collected by the oil collection box 400. After long-term use, the mounting frame 401 and the filter screen 402 can be cleaned by removing the overlapping plate 403 and then put back in their original positions.

[0031] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An oil pump with leak-proof function, characterized in that: The system includes an oil pump body (100), a filter mechanism (200), and a leak-proof mechanism (300). The oil pump body (100) has an oil inlet pipe (101) and an oil outlet pipe (102) on both sides. A sleeve (103) is fixedly connected to the outer surface of the oil outlet pipe (102). The inner wall of the oil inlet pipe (101) has a first threaded groove (101a). The filter mechanism (200) includes a connecting pipe (201). A second threaded groove (201a) matching the first threaded groove (101a) is formed on the outer wall of one side of the connecting pipe (201). The connecting pipe (201) has internal grooves... A stainless steel filter (202) and a filter assembly (203) are provided separately. The leak-proof mechanism (300) includes an L-shaped collection pipe (301). The two ends of the collection pipe (301) are connected to the sleeve (103) and the inside of the oil pump body (100), respectively. A return column (302) is provided above the inside of the collection pipe (301). A frustum-shaped concave hole (302a) is opened at the top of the return column (302). A return channel (302b) connected to the frustum-shaped concave hole (302a) is opened in the middle of the return column (302). A leak-proof assembly (303) is provided below the return column (302).

2. The oil pump with anti-leakage function as described in claim 1, characterized in that: The filter assembly (203) includes an installation tube (203a) and a non-woven filter cartridge (203b). A third threaded groove (203c) is provided on the outer wall of the tube opening on one side of the installation tube (203a). A fourth threaded groove (201b) adapted to the third threaded groove (203c) is provided on the inner wall of the tube opening on one side of the connecting tube (201). An annular groove (203d) is opened at one end of the installation tube (203a). The inlet end of the non-woven filter cartridge (203b) is movably disposed in the annular groove (203d).

3. An oil pump with anti-leakage function as described in claim 2, characterized in that: The annular groove (203d) and the inlet end of the nonwoven filter cartridge (203b) are fixed by a fastener, which includes a ring cover (203e). A rubber sealing ring (203f) is provided at the bottom of the ring cover (203e). The rubber sealing ring (203f) is interference-fitted with the annular groove (203d) and the inlet end of the nonwoven filter cartridge (203b).

4. An oil pump with anti-leakage function as described in claim 1, characterized in that: The leak-proof component (303) includes a frustum-shaped sealing plug (303a) disposed at the bottom end of the return channel (302b). Limiting plates (303b) are respectively disposed on both sides of the sealing plug (303a). Limiting holes are opened on the end face of the limiting plates (303b). Supporting plates (303c) are respectively disposed on both sides of the inner wall of the collection pipe (301). Limiting posts (303d) are disposed on the top of the supporting plates (303c). The limiting posts (303d) penetrate the limiting holes. A spring (303e) is disposed between the supporting plates (303c) and the limiting plates (303b).

5. An oil pump with anti-leakage function as described in claim 1, characterized in that: The oil pump body (100) is also provided with an oil collection box (400) with an upward opening below it. An installation frame (401) is provided at the opening of the oil collection box (400). A filter screen (402) is provided inside the installation frame (401). An overlapping plate (403) is provided on both sides of the top of the installation frame (401) and is movably connected to the opening of the oil collection box (400). An installation bracket (404) is detachably connected to the outer wall of the oil collection box (400). The top of the installation bracket (404) is fixedly connected to the outer wall of the oil pump body (100).

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