Efficient and wear-resistant oil pump

Abstract

The utility model relates to the technical field of oil pumps, in particular to an efficient and wear-resistant oil pump which comprises an oil pump body, a sealing cavity and an installation protruding block, the sealing cavity is fixedly installed in the oil pump body, and an oil conveying and filtering structure is arranged at the lower end of the oil pump body. The engine oil conveying and filtering structure comprises an oil inlet pipe, a positioning groove and a sealing ring, the oil inlet pipe is fixedly connected to the lower end of the engine oil pump body, and the positioning groove is fixedly connected to the inner side of the oil inlet pipe. According to the efficient and wear-resistant engine oil pump, when the engine oil pump is started to work, the driving gear and the driven gear rotate to suck engine oil in the oil inlet pipe into the positioning groove through air pressure in the oil cavity, and clean engine oil can enter the sealing cavity along the oil conveying pipe to be conveyed to all parts of an engine; impurities entering engine oil of the engine oil pump are filtered, the influence of the impurities on increase of the rotating friction force of the transmission gear is reduced, and the service life of the efficient and wear-resistant engine oil pump is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of oil pumps, in particular to a high-efficiency and wear-resistant oil pump. Background Art

[0002] The role of the oil pump in the lubrication system is to increase the oil to a certain pressure and then force it to the moving surfaces of the engine parts. The oil pump structure can be divided into two types: gear type and rotor type. The gear oil pump is further divided into internal gear type and external gear type. The latter is generally called a gear oil pump. The oil pump is used to increase the oil pressure and ensure a certain amount of oil, and force oil supply to each friction surface. Gear and rotor oil pumps are widely used in internal combustion engines. Gear oil pumps have a simple structure, easy processing, reliable operation, long service life, and high pumping oil pressure.

[0003] For example, the authorization announcement number "CN220227168U" is named as a kind of high-efficiency and wear-resistant oil pump. Although the volumetric efficiency is improved, the oil nozzle reduces the high wear of the original transposed structure during operation. At the same time, a pressure relief valve and a safety valve are installed to double guarantee the oil supply rate and volumetric efficiency in the oil pump. However, the existing high-efficiency and wear-resistant oil pump uses the cooperation between the inner rotor and the outer rotor to realize the oil delivery. However, the current oil pump lacks a filtering and screening structure for the oil, which makes it possible for a small amount of impurities to exist inside the oil before entering the two rotors of the oil pump. The impurities will increase the friction of the meshing part of the inner rotor and the outer rotor, which increases the resistance of the inner rotor when driving the outer rotor to rotate, thereby expanding the wear and friction at the connection between the two rotors inside the oil pump and reducing the service life of the high-efficiency and wear-resistant oil pump.

[0004] At the same time, the existing efficient and wear-resistant oil pump uses an oil chamber between an inner rotor and an outer rotor that are meshed together to achieve the effect of conveying oil. However, an irregular fan-shaped opening through which the interior can be observed is opened on the oil pump body that is buckled on the outside of the two rotors. Because the conveying ring of the oil pump needs to be sealed internally, the irregular fan-shaped opening is more prone to leakage or air leakage that destroys the vacuum environment. This makes it impossible for the oil chambers of the inner rotor and the outer rotor to rely on suction to continuously suck in oil to complete the conveying work, reducing the working effect of the efficient and wear-resistant oil pump. Summary of the invention

[0005] The utility model aims to solve the problems of short service life and poor working effect of the high-efficiency and wear-resistant oil pump, and proposes a high-efficiency and wear-resistant oil pump.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an efficient and wear-resistant oil pump, comprising an oil pump body, a sealing cavity and a mounting protrusion, the sealing cavity being fixedly mounted inside the oil pump body, the lower end of the oil pump body being provided with an oil delivery and filtering structure, the oil delivery and filtering structure comprising an oil inlet pipe, a positioning groove and a sealing ring, the oil inlet pipe being fixedly connected to the lower end of the oil pump body, the inner side of the oil inlet pipe being fixedly connected with a positioning groove, the inner side of the positioning groove being slidably clamped with a filter screen, the other end of the positioning groove being fixedly connected with an oil delivery pipe, the two sealing rings being fixedly mounted inside the sealing cavity, and the ends of the two sealing rings being fixedly connected to one side of the positioning groove.

[0007] Preferably, a filter screen replaceable and removable structure is provided on the outside of the sealing cavity;

[0008] The filter screen replaceable and removable structure comprises a limit frame, a mounting plate and a locking bolt;

[0009] The limit frame is fixedly mounted on the outer wall of the sealing cavity, the inner side of the limit frame is arranged opposite to the outer wall of the positioning groove, the inner side of the limit frame is movably connected with a mounting plate, the inner wall of the mounting plate is fixedly connected with a leak-proof pad, and the outer side of the mounting plate is movably mounted with a plurality of locking bolts, and the ends of the plurality of locking bolts are connected to the internal threads of the sealing cavity.

[0010] Preferably, a double gear transmission oil delivery structure is provided inside the sealing cavity;

[0011] The double gear transmission oil delivery structure comprises a driving shaft, a driven shaft and a wear-resistant ring;

[0012] The driving shaft is rotatably mounted on one side of the inner part of the sealing cavity, a driving gear is fixedly sleeved on the outer side of the driving shaft, the driven shaft is rotatably connected to the other side of the inner part of the sealing cavity, a driven gear is fixedly sleeved on the outer side of the driven shaft, one side of the driving gear is meshed and connected with the driven gear, the two wear-resistant rings are fixedly mounted on the inner part of the sealing cavity, and a plurality of oil chambers are fixedly opened between the outer sides of the driving gear and the driven gear and the inner wall of the wear-resistant ring.

[0013] Preferably, an oil discharge and pressure relief structure is provided inside the oil pump body;

[0014] The oil discharge and pressure relief structure comprises an oil outlet end, an oil discharge pipe and an oil outlet hole;

[0015] The oil drain pipe is fixedly installed on the inner top of the oil pump body, the lower end of the oil drain pipe is fixedly connected to the oil outlet end, the oil outlet hole is fixedly opened on the outer wall of the oil pump body, the inner side of the oil outlet hole is connected to the end of the oil drain pipe, and the other end of the oil drain pipe is fixedly installed with a pressure relief valve.

[0016] Preferably, the inner ends of the driving gear and the driven gear are arranged opposite to the end of the oil delivery pipe, and the lower part of the oil outlet end is connected to the upper end of the meshing part of the driving gear and the driven gear.

[0017] Preferably, the plurality of mounting protrusions are fixedly connected to the outer wall of the oil pump body, and the inner sides of the plurality of mounting protrusions are threadedly connected with mounting bolts.

[0018] The utility model proposes an efficient and wear-resistant oil pump, which has the beneficial effect that when the oil pump is started, the driving gear and the driven gear rotate to utilize the air pressure inside the oil chamber to first suck the oil in the oil inlet pipe into the positioning groove, and the filter in the positioning groove can absorb and filter the particulate impurities in the oil, and the clean oil will enter the sealed chamber along the oil delivery pipe and be transported to various parts of the engine. The impurities entering the oil of the oil pump are filtered to reduce the influence of the impurities on the increase of the friction force of the transmission gear rotation, thereby improving the service life of the efficient and wear-resistant oil pump.

[0019] When the oil pump is working, the main body will drive the driving shaft to rotate, and the driving shaft will drive the outer driving gear to rotate, so that the saw teeth between the two gears will continuously form a vacuum oil chamber, which can suck in the oil and move it together for transportation. The wear-resistant ring is made of stainless steel metal with a smooth surface and good wear resistance, and the sealing chamber is a completely sealed structure, eliminating the irregular openings on the outside of the oil pump, thereby reducing the occurrence of leakage of the delivered oil and improving the working effect of the efficient and wear-resistant oil pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0021] Figure 2 for Figure 1 A front cross-sectional schematic diagram of

[0022] Figure 3 for Figure 1 A schematic diagram of a right side view of FIG.

[0023] Figure 4 for Figure 1 Enlarged cross-sectional view of part A in the middle;

[0024] Figure 5 for Figure 2 Enlarged cross-sectional view of part B in the middle;

[0025] Figure 6 for Figure 2 Enlarged cross-sectional view of part C in the middle.

[0026] In the figure: 1. oil pump body, 2. sealing chamber, 3. mounting protrusion, 4. mounting bolt, 5. oil delivery and filtering structure, 51. oil inlet pipe, 52. positioning groove, 53. filter, 54. oil delivery pipe, 55. sealing ring, 6. filter replaceable and removable structure, 61. limit frame, 62. mounting plate, 63. anti-leakage pad, 64. locking bolt, 7. double gear transmission oil delivery structure, 71. driving shaft, 72. driving gear, 73. driven shaft, 74. driven gear, 75. wear-resistant ring, 76. oil chamber, 8. oil discharge and pressure relief structure, 81. oil outlet end, 82. oil discharge pipe, 83. oil outlet hole, 84. pressure relief valve. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the accompanying drawings:

[0028] See also Figure 1-6 , an efficient and wear-resistant oil pump, comprising an oil pump body 1, a sealing cavity 2 and a mounting convex block 3, the sealing cavity 2 is fixedly mounted inside the oil pump body 1, an oil delivery and filtering structure 5 is arranged at the lower end of the oil pump body 1, the oil delivery and filtering structure 5 comprises an oil inlet pipe 51, a positioning groove 52 and a sealing ring 55, the oil inlet pipe 51 is fixedly connected to the lower end of the oil pump body 1, the oil inlet pipe 51 is used to be connected with the external oil shell, so that the oil inside the oil shell can be delivered to the positioning groove 52, when the oil pump is started, the driving gear 72 and the driven gear 74 rotate, and the oil in the oil inlet pipe 51 is first sucked into the positioning groove 52 by the air pressure inside the oil cavity 76, and a filter screen 53 made of PET filter material is arranged in the positioning groove 52, which can absorb and filter the particulate impurities in the oil, and the clean oil will enter the sealing cavity 2 along the oil delivery pipe 54 and be delivered to various parts of the engine;

[0029] The inner side of the oil inlet pipe 51 is fixedly connected with a positioning groove 52, and the inner side of the positioning groove 52 is slidably connected with a filter screen 53, which is made of PET material and can effectively filter out solid impurities in the engine oil. The other end of the positioning groove 52 is fixedly connected with an oil delivery pipe 54, and two sealing rings 55 are fixedly installed inside the sealing chamber 2. The sealing rings 55 are made of rubber material to prevent unfiltered engine oil from seeping into the oil chamber 76, and the ends of the two sealing rings 55 are fixedly connected to one side of the positioning groove 52.

[0030] A filter screen replaceable and detachable structure 6 is provided on the outside of the sealed chamber 2. The filter screen replaceable and detachable structure 6 includes a limit frame 61, a mounting plate 62 and a locking bolt 64. The limit frame 61 is fixedly mounted on the outer wall of the sealed chamber 2. The inner side of the limit frame 61 is arranged opposite to the outer wall of the positioning groove 52. The inner side of the limit frame 61 is movably connected with the mounting plate 62. The inner wall of the mounting plate 62 is fixedly connected with a leakproof pad 63. The leakproof pad 63 is made of rubber material and surrounds the outer periphery of the inner wall of the mounting plate 62. When the filter screen 53 is fixed, the clean filter screen 53 is placed in the fixed position. The filter 53 is then firmly fixed in the positioning groove 52 to filter the oil. On the contrary, the locking bolts 64 can be loosened to remove the mounting plate 62 to replace the contaminated filter 53. Multiple locking bolts 64 are movably installed on the outer side of the mounting plate 62, and the ends of the multiple locking bolts 64 are connected to the internal threads of the sealing chamber 2.

[0031] The leak-proof pad 63 is made of rubber material and surrounds the inner wall of the mounting plate 62. When fixing the filter 53, the clean filter 53 is embedded in the positioning groove 52, and then the mounting plate 62 is inserted into the limiting frame 61 according to the position of the inner side of the limiting frame 61, and then the multiple locking bolts 64 around are rotated and tightened to complete the fixing of the mounting plate 62. At this time, the filter 53 will be firmly fixed in the positioning groove 52 to filter the oil. Otherwise, the locking bolts 64 can be loosened to remove the mounting plate 62 to replace the contaminated filter 53. The oil inlet pipe 51 is used to connect with the external oil shell, so that the oil inside the oil shell can be transported to the positioning groove 52;

[0032] When the oil pump starts working, the driving gear 72 and the driven gear 74 rotate, and the air pressure inside the oil chamber 76 will be used to first suck the oil in the oil inlet pipe 51 into the positioning groove 52. The positioning groove 52 is provided with a filter 53 made of PET filter material, which can absorb and filter particulate impurities in the oil. The clean oil will enter the sealed chamber 2 along the oil delivery pipe 54 and be transported to various parts of the engine. The impurities entering the oil of the oil pump are filtered, which reduces the influence of impurities on the increase of friction of the transmission gear rotation, and improves the service life of the high-efficiency and wear-resistant oil pump.

[0033] See also Figure 1-6A double-gear transmission oil delivery structure 7 is provided on the inner side of the sealing chamber 2. The double-gear transmission oil delivery structure 7 includes a driving shaft 71, a driven shaft 73 and a wear-resistant ring 75. The driving shaft 71 is rotatably mounted on one side of the inner side of the sealing chamber 2. A driving gear 72 is fixedly sleeved on the outer side of the driving shaft 71. The driving shaft 71 is connected to the transmission mechanism of the oil pump body 1. When the oil pump body 1 is working, the driving shaft 71 will drive the driving shaft 71 to rotate, and the driving shaft 71 will drive the outer driving gear 72 to rotate. The driving gear 72 drives the other side driven gear 74 to rotate along the driven shaft 73 through the meshing saw teeth, so that the saw teeth between the two gears will continuously form a vacuum oil chamber 76, which can suck in the oil and move it together for transportation;

[0034] The driven shaft 73 is rotatably connected to the other side of the sealed chamber 2. A driven gear 74 is fixedly sleeved on the outside of the driven shaft 73. One side of the driving gear 72 is meshed and connected with the driven gear 74. Two wear-resistant rings 75 are fixedly installed inside the sealed chamber 2. The wear-resistant rings 75 are made of stainless steel metal with a smooth surface and good wear resistance. The wear-resistant rings 75 are relatively strong and durable. The sealed chamber 2 is a completely sealed structure, and the irregular openings opened on the outside of the oil pump are cancelled, which reduces the possibility of leakage of the conveying oil. A plurality of oil chambers 76 are fixedly opened between the outer sides of the driving gear 72 and the driven gear 74 and the inner wall of the wear-resistant ring 75;

[0035] The driving shaft 71 is connected to the transmission mechanism of the oil pump body 1. The oil pump body 1 will drive the driving shaft 71 to rotate when working, and the driving shaft 71 will drive the outer driving gear 72 to rotate. The driving gear 72 drives the other side driven gear 74 to rotate along the driven shaft 73 through the meshing serrations, so that the serrations between the two gears will continuously form a vacuum oil chamber 76, which can suck in the oil and move it together for transportation. The wear-resistant ring 75 is made of stainless steel metal with a smooth surface and good wear resistance. The wear-resistant ring 75 is relatively strong and durable, and the sealing chamber 2 is a completely sealed structure, which eliminates the irregular openings on the outside of the oil pump, thereby reducing the occurrence of leakage of the conveyed oil and improving the working effect of the efficient and wear-resistant oil pump.

[0036] See also Figure 1-6The inside of the oil pump body 1 is provided with an oil discharge pressure relief structure 8, which includes an oil outlet end 81, an oil discharge pipe 82 and an oil outlet hole 83. The oil discharge pipe 82 is fixedly installed at the top of the inside of the oil pump body 1, and the lower end of the oil discharge pipe 82 is fixedly connected with the oil outlet end 81. The rotating oil chamber 76 transports the oil to the oil outlet end 81 through the vacuum air pressure, and the oil outlet end 81 will transport the oil to the oil discharge pipe 82, and the oil discharge pipe 82 can discharge the flowing oil through the oil outlet hole 83. The oil outlet hole 83 is fixedly opened on the outer wall of the oil pump body 1, and the inner side of the oil outlet hole 83 is connected with the end of the oil discharge pipe 82. A pressure relief valve 84 is fixedly installed at the other end of the oil discharge pipe 82. The pressure relief valve 84 belongs to the prior art disclosed in the comparative document patent number "CN220227168U" entitled a high-efficiency and wear-resistant oil pump, and can release the oil pressure when the oil pressure inside the oil discharge pipe 82 is too large.

[0037] The inner ends of the driving gear 72 and the driven gear 74 are arranged opposite to the end of the oil delivery pipe 54, and the lower part of the oil outlet end 81 is connected to the upper end of the meshing part of the driving gear 72 and the driven gear 74. A plurality of mounting protrusions 3 are fixedly connected to the outer wall of the oil pump body 1, and the inner sides of the plurality of mounting protrusions 3 are threadedly connected with mounting bolts 4. The mounting bolts 4 facilitate fixing the oil pump body 1 inside the vehicle through the mounting protrusions 3 on all sides.

[0038] Working principle:

[0039] When installing a high-efficiency and wear-resistant oil pump in a position where the oil pump is required to deliver oil for lubrication:

[0040] High-efficiency and wear-resistant oil pump oil delivery and filtration structure:

[0041] The leak-proof pad 63 is made of rubber material and surrounds the inner wall of the mounting plate 62. When fixing the filter 53, the clean filter 53 is embedded in the positioning groove 52, and then the mounting plate 62 is inserted into the limiting frame 61 according to the position of the inner side of the limiting frame 61, and then the multiple locking bolts 64 around are rotated and tightened to complete the fixing of the mounting plate 62. At this time, the filter 53 will be firmly fixed in the positioning groove 52 to filter the oil. Otherwise, the locking bolts 64 can be loosened to remove the mounting plate 62 to replace the contaminated filter 53.

[0042] The oil inlet pipe 51 is used to connect with the external oil casing so that the oil inside the oil casing can be transported to the positioning groove 52. When the oil pump starts working, the driving gear 72 and the driven gear 74 rotate to use the air pressure inside the oil chamber 76 to first suck the oil in the oil inlet pipe 51 into the positioning groove 52. The positioning groove 52 is provided with a PET filter material, which can absorb and filter the particulate impurities in the oil. The clean oil will enter the sealed chamber 2 along the oil delivery pipe 54 and be transported to various parts of the engine. The impurities entering the oil pump are filtered to reduce the influence of the impurities on the increase of the friction of the transmission gear rotation.

[0043] The double gears of the highly efficient and wear-resistant oil pump have good sealing performance. Oil delivery structure:

[0044] The driving shaft 71 is connected to the transmission mechanism of the oil pump body 1. When the oil pump body 1 is working, it will drive the driving shaft 71 to rotate, and the driving shaft 71 will drive the outer driving gear 72 to rotate. The driving gear 72 drives the other side driven gear 74 to rotate along the driven shaft 73 through the meshing sawtooth, so that the sawtooth between the two gears will continuously form a vacuum oil chamber 76 that can suck in the oil and move it together for transportation. The wear-resistant ring 75 is made of stainless steel metal with a smooth surface and good wear resistance. The wear-resistant ring 75 is relatively strong and durable, and the sealing chamber 2 is a completely sealed structure, which eliminates the irregular openings opened on the outside of the oil pump, thereby reducing the occurrence of leakage of the conveyed oil;

[0045] High-efficiency and wear-resistant oil pump outlet and installation structure;

[0046] The rotating oil chamber 76 transports the engine oil to the oil outlet end 81 through vacuum air pressure, and the oil outlet end 81 transports the engine oil to the oil drain pipe 82. The oil drain pipe 82 can discharge the flowing engine oil through the oil outlet hole 83. The oil outlet hole 83 is fixedly opened on the outer wall of the oil pump body 1. The pressure relief valve 84 belongs to the prior art that has been disclosed in the comparative document patent number "CN220227168U" entitled a high-efficiency and wear-resistant oil pump. It can release the oil pressure when the oil pressure inside the oil drain pipe 82 is too high. The inner side threads of the multiple mounting protrusions 3 are connected with mounting bolts 4. The mounting bolts 4 facilitate fixing the oil pump body 1 to the interior of the automobile through the mounting protrusions 3 on all sides.

[0047] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. An efficient and wear-resistant oil pump, comprising an oil pump body (1), a sealing chamber (2) and a mounting protrusion (3), characterized in that: The sealing chamber (2) is fixedly mounted inside the oil pump body (1); an oil delivery and filtering structure (5) is provided at the lower end of the oil pump body (1); the oil delivery and filtering structure (5) comprises an oil inlet pipe (51), a positioning groove (52) and a sealing ring (55); the oil inlet pipe (51) is fixedly connected to the lower end of the oil pump body (1); the inner side of the oil inlet pipe (51) is fixedly connected to the positioning groove (52); the inner side of the positioning groove (52) is slidably engaged with a filter screen (53); the other end of the positioning groove (52) is fixedly connected to an oil delivery pipe (54); two sealing rings (55) are fixedly mounted inside the sealing chamber (2); the ends of the two sealing rings (55) are fixedly connected to one side of the positioning groove (52).

2. The high-efficiency and wear-resistant oil pump according to claim 1, characterized in that: A filter screen replaceable and removable structure (6) is provided on the outside of the sealed cavity (2); The filter screen replaceable and removable structure (6) comprises a limit frame (61), a mounting plate (62) and a locking bolt (64); The limit frame (61) is fixedly mounted on the outer wall of the sealing cavity (2), the inner side of the limit frame (61) is arranged opposite to the outer wall of the positioning groove (52), the inner side of the limit frame (61) is movably connected to a mounting plate (62), the inner wall of the mounting plate (62) is fixedly connected to a leak-proof pad (63), and the outer side of the mounting plate (62) is movably mounted with a plurality of locking bolts (64), and the ends of the plurality of locking bolts (64) are connected to the internal threads of the sealing cavity (2).

3. The high-efficiency and wear-resistant oil pump according to claim 2, characterized in that: A double gear transmission oil delivery structure (7) is provided inside the sealing cavity (2); The double gear transmission oil delivery structure (7) comprises a driving shaft (71), a driven shaft (73) and a wear-resistant ring (75); The driving shaft (71) is rotatably mounted on one side of the interior of the sealing chamber (2); a driving gear (72) is fixedly sleeved on the outer side of the driving shaft (71); the driven shaft (73) is rotatably connected to the other side of the interior of the sealing chamber (2); a driven gear (74) is fixedly sleeved on the outer side of the driven shaft (73); one side of the driving gear (72) is meshedly connected to the driven gear (74); two wear-resistant rings (75) are fixedly mounted on the interior of the sealing chamber (2); and a plurality of oil chambers (76) are fixedly provided between the outer sides of the driving gear (72) and the driven gear (74) and the inner walls of the wear-resistant rings (75).

4. The high-efficiency and wear-resistant oil pump according to claim 3, characterized in that: An oil discharge and pressure relief structure (8) is provided inside the oil pump body (1); The oil discharge and pressure relief structure (8) comprises an oil outlet end (81), an oil discharge pipe (82) and an oil outlet hole (83); The oil drain pipe (82) is fixedly mounted on the top of the inner part of the oil pump body (1); the lower end of the oil drain pipe (82) is fixedly connected to the oil outlet end (81); the oil outlet hole (83) is fixedly opened on the outer wall of the oil pump body (1); the inner side of the oil outlet hole (83) is connected to the end of the oil drain pipe (82); and the other end of the oil drain pipe (82) is fixedly mounted with a pressure relief valve (84).

5. The high-efficiency and wear-resistant oil pump according to claim 4, characterized in that: The inner ends of the driving gear (72) and the driven gear (74) are arranged opposite to the end of the oil delivery pipe (54), and the lower part of the oil outlet end (81) is connected to the upper end of the meshing part of the driving gear (72) and the driven gear (74).

6. The high-efficiency and wear-resistant oil pump according to claim 5, characterized in that: The plurality of mounting protrusions (3) are fixedly connected to the outer wall of the oil pump body (1), and the inner sides of the plurality of mounting protrusions (3) are threadedly connected with mounting bolts (4).

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