Oil leakage prevention connecting structure of oil pump

Abstract

The utility model relates to the technical field of oil pumps, in particular to an oil pump oil leakage prevention connecting structure which comprises an oil pump body, a connecting assembly and an oil pipe, the oil pump body communicates with the oil pipe through the connecting assembly, and the connecting assembly comprises a connecting piece, a connecting pipe, a clamping piece and a locking piece. The connecting pipes are symmetrically arranged at the two ends of the connecting piece, the two connecting pipes are connected to the oil pump body and an oil pipe respectively, the connecting pipes are inserted into the connecting piece in a penetrating mode, the two connecting pipes are connected through the connecting piece in a penetrating mode, the clamping piece is annular, the inner wall of the clamping piece abuts against the outer walls of the connecting pipes, and the outer wall of the clamping piece abuts against the outer walls of the connecting pipes. The locking piece is arranged on the connecting pipe in a sleeved mode, the clamping piece abuts against the locking piece, the end, away from the locking piece, of the clamping piece abuts against the connecting piece, and the locking piece is in threaded connection with the connecting piece. The connecting structure has the effect of improving the connecting tightness of the oil pump and the oil pipe.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of oil pumps, in particular to an oil pump oil leakage prevention connecting structure. BACKGROUND

[0002] In a modern industrial system, an oil pump, as a key power transmission device, is widely used in various mechanical equipment and is responsible for conveying various liquids including lubricating oil.

[0003] At present, although the overall design and technical level of the oil pump have been quite mature, in actual application, especially under high load and complex environmental conditions, the connection part between the oil pump and the oil pipe is still one of the frequent failure points. Especially for the oil pump made of PVC material, the connection between the oil pump and the oil pipe is mostly achieved in the traditional way of flange buckling plus sealing ring. Although this connection method has a long history and is simple to operate, the oil extracted by the oil pump is easy to soften the sealing ring, and it is difficult to avoid the erosion of the sealing ring material by the oil, thereby causing the possibility of oil leakage at the connection part between the oil pump and the oil pipe. SUMMARY

[0004] In order to improve the connection tightness of the oil pump and the oil pipe and reduce the possibility of oil leakage, the application provides an oil pump oil leakage prevention connecting structure.

[0005] The oil pump oil leakage prevention connecting structure provided by the application adopts the following technical scheme:

[0006] An oil pump oil leakage prevention connecting structure, comprising an oil pump body, a connecting assembly and an oil pipe, the oil pump body being communicated with the oil pipe through the connecting assembly, the connecting assembly comprising a connecting piece, connecting pipes, a clamping piece and a locking piece, the connecting pipes being symmetrically arranged at two ends of the connecting piece, the two connecting pipes being connected to the oil pump body and the oil pipe respectively, the connecting pipes being inserted into the connecting piece, the two connecting pipes being connected through the connecting piece, the clamping piece being annular, the inner wall of the clamping piece abutting against the outer wall of the connecting pipe, the locking piece being sleeved on the connecting pipe, the clamping piece abutting against the locking piece, one end of the clamping piece away from the locking piece abutting against the connecting piece, and the locking piece being threadedly connected with the connecting piece.

[0007] By adopting the above technical scheme, when the oil pump body needs to be connected with the oil pipe, the oil pump body and the oil pipe are both fixedly connected with the connecting pipe, the connecting pipe is inserted into the connecting piece, and then the locking piece is screwed on the connecting pipe. The clamping piece is pressed against the connecting pipe and the connecting piece under the action of the locking piece, so that the connecting pipe and the connecting piece are tightly fitted, thereby realizing sealing. The whole installation process is simple and convenient, and a traditional sealing ring does not need to be used, thereby reducing the oil pump interface oil leakage phenomenon caused by the softening of the sealing ring and significantly improving the sealing performance of the connection part between the oil pump and the oil pipe.

[0008] Optionally, the middle part of the connecting piece is provided with a protruding piece, and an outer wall of the protruding piece is provided with an angle, and a length direction of the angle is consistent with a length direction of the connecting piece.

[0009] By adopting the above technical scheme, when the operator holds the protruding piece, the design of the angle enables the hand to better exert a rotating force, reduces the risk of hand slipping, improves the convenience and safety of operation, and facilitates the locking piece to be more accurately screwed, thereby further enhancing the sealing performance of the connection between the oil pump and the oil pipe.

[0010] Optionally, one end of the locking piece away from the connecting piece is slidably connected with a locking piece, one side of the locking piece is provided with a fixing piece, the fixing piece is used for fixing the position of the locking piece, and an outer wall of the connecting pipe is provided with a locking groove in the form of a ring, and the locking piece is inserted into the locking groove.

[0011] By adopting the above technical scheme, when the locking piece is screwed, the locking piece is inserted into the locking groove of the connecting pipe, and under the action of the fixing piece, the locking piece is fixed in the locking groove, thereby reducing the possibility of the connecting pipe falling off the connecting piece, and forming a double locking mechanism.

[0012] Optionally, the fixing piece is rotatably connected with the locking piece, one end of the locking piece is in the form of a hemisphere, an outer wall of the locking piece is connected with a convex ring, the locking piece is slidably connected with the locking piece through the convex ring, the convex ring is connected with an elastic piece, one end of the elastic piece away from the convex ring is connected with the locking piece, the fixing piece is provided with a pop-out groove for the locking piece to pop out, and when the locking piece abuts against the fixing piece, the locking piece is inserted into the locking groove.

[0013] By adopting the above technical scheme, when the locking piece needs to be inserted into the locking groove, the fixing piece only needs to be rotated, so that the end of the locking piece in the form of a hemisphere abuts against the fixing piece, and the end of the locking piece away from the hemisphere is inserted into the locking groove, thereby realizing a quick and reliable locking function.

[0014] Optionally, an outer wall of the connecting pipe is provided with a limiting mark, and the limiting mark is used for confirming the position of the connecting pipe inserted into the connecting piece.

[0015] By adopting the above technical scheme, the outer wall of the connecting pipe is provided with a limiting mark, and the mark can accurately indicate the correct position of the connecting pipe inserted into the connecting piece, thereby significantly reducing the risk that the locking piece cannot be inserted into the locking groove due to improper position, and improving the reliability and convenience of installation.

[0016] Optionally, an inner wall of the connecting piece is connected with a limiting piece, and the limiting piece abuts against the connecting pipe.

[0017] By adopting the technical scheme, the inner wall of the connecting piece is connected with the limiting piece, the one end of the connecting pipe can effectively abut against the limiting piece, the connecting pipe can be quickly positioned to the correct position when being inserted, installation errors caused by misoperation are reduced, and the reliability and sealing performance of the whole connecting assembly are further improved.

[0018] Optionally, the two ends of the connecting piece are chamfered horn-shaped, and the clamping piece is annular with a triangular cross section.

[0019] By adopting the technical scheme, the clamping piece is annular with a triangular cross section, the clamping piece is inserted into the gap between the connecting pipe and the connecting piece, the clamping piece can better fit the outer wall of the connecting pipe when the locking piece is tightened, the gap is reduced, and thus the oil leakage is effectively prevented.

[0020] Optionally, the clamping piece is annular with a circular cross section, and the clamping piece is made of a metal material with elasticity.

[0021] By adopting the technical scheme, the clamping piece is annular with a circular cross section and is made of a metal material with elasticity, the shape change of the connecting pipe can be better adapted, the clamping piece can uniformly press the connecting pipe when the locking piece is tightened, the close fit between the connecting pipe and the connecting piece is ensured, and thus the sealing performance is further improved, meanwhile, the metal material with elasticity can still have good resilience after being disassembled and assembled for multiple times, and the reliability and stability during long-term use are ensured.

[0022] In summary, the present application has at least one of the following beneficial technical effects:

[0023] 1. When the oil pump body needs to be connected with the oil pipe, the oil pump body and the oil pipe are both fixedly connected with the connecting pipe, the connecting pipe is inserted into the connecting piece, and then the locking piece is tightened on the connecting pipe, the clamping piece is pressed against the connecting pipe and the connecting piece under the action of the locking piece, the connecting pipe and the connecting piece are closely fitted, and thus the sealing is realized, the whole installation process is simple and convenient, a traditional sealing ring is not needed, the oil leakage phenomenon of the oil pump interface caused by the softening of the sealing ring is reduced, and the sealing performance of the connection between the oil pump and the oil pipe is significantly improved.

[0024] 2. When the locking piece is tightened, the locking piece is inserted into the locking groove of the connecting pipe, and under the action of the fixing piece, the locking piece is fixed in the locking groove, the possibility that the connecting pipe falls off the connecting piece is reduced, and a double locking mechanism is formed.

[0025] 3. The outer wall of the connecting pipe is provided with a limiting mark, the mark can accurately indicate the correct position of the connecting pipe inserted into the connecting piece, and thus the risk that the locking piece cannot be inserted into the locking groove due to improper position is significantly reduced, and the reliability and convenience of installation are improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a schematic diagram of the overall structure in the embodiment of the present application.

[0027] Figure 2 is a sectional view of the connecting assembly in the embodiment of the present application.

[0028] Figure 3 is a schematic diagram of the connecting assembly structure in the embodiment of the present application.

[0029] Figure 4 is Figure 2 is an enlarged schematic diagram at A in FIG. 1.

[0030] Figure 5 is a schematic diagram of the clamping member structure in the embodiment 2 of the present application.

[0031] Legend of reference signs:

[0032] 1, oil pump body; 2, oil pipe; 3, connecting member; 31, protruding member; 4, connecting pipe; 41, locking groove; 5, clamping member; 6, locking member; 61, sliding groove; 7, locking member; 71, protruding ring; 72, elastic member; 8, fixing member; 81, ejection groove; 9, limiting member. DETAILED DESCRIPTION

[0033] The following will be described in detail in combination with the accompanying Figures 1-5 The present application will be further described in detail.

[0034] The embodiment of the present application discloses an oil pump anti-oil leakage connecting structure.

[0035] Embodiment 1

[0036] Referring to Figure 1 and Figure 2 , an oil pump anti-oil leakage connecting structure, comprising an oil pump body 1, a connecting assembly and an oil pipe 2, the oil pump body 1 is communicated with the oil pipe 2 through the connecting assembly, the connecting assembly comprises a connecting member 3, a connecting pipe 4, a clamping member 5 and a locking member 6, the connecting pipe 4 is symmetrically arranged at both ends of the connecting member 3, the two connecting pipes 4 are respectively welded and fixed on the oil pump body 1 and the oil pipe 2, the oil pump body 1 is penetrated through the connecting pipe 4 connected to the oil pump body 1, the oil pipe 2 is penetrated through the connecting pipe 4 connected to the oil pipe 2, the connecting pipe 4 is inserted into the connecting member 3, the outer wall of the connecting pipe 4 is fitted with the inner wall of the connecting member 3, the two connecting pipes 4 are connected through the connecting member 3, the clamping member 5 is annular, the inner wall of the clamping member 5 is abutted to the outer wall of the connecting pipe 4, the locking member 6 is sleeved on the connecting pipe 4, the clamping member 5 is abutted to the locking member 6, the end of the clamping member 5 away from the locking member 6 is abutted to the connecting member 3, and the locking member 6 is threadedly connected with the connecting member 3.

[0037] When the oil pump body 1 and the oil pipe 2 are installed, the two connecting pipes 4 are welded on the oil pump body 1 and the oil pipe 2 respectively, the connecting pipe 4 connected to the oil pump body 1 is inserted into the connecting piece 3 away from the oil pump body 1, and the connecting pipe 4 connected to the oil pipe 2 is inserted into the end of the connecting piece 3 away from the oil pump body 1, thereby forming the connection relationship of the oil pump body 1, the connecting pipe 4, the connecting piece 3, the other connecting pipe 4 and the oil pipe 2, so that the oil pump body 1 is stably communicated with the oil pipe 2 under the action of the connecting pipe 4 and the connecting piece 3, and the gap between the connecting piece 3 and the connecting pipe 4 is clamped by the clamping piece 5, so that the sealing rubber ring is not needed, the possibility of oil leakage of the connection between the oil pump body 1 and the oil pipe 2 is reduced, and the tightness of the connection structure of the oil pump and the oil pipe 2 is improved.

[0038] In order to facilitate the insertion of the connecting pipe 4 into the connecting piece 3, the insertion end of the connecting pipe 4 is chamfered.

[0039] The middle part of the connecting piece 3 is provided with a protruding piece 31, the protruding piece 31 is located on the outer wall of the connecting piece 3 and is integrally formed with the connecting piece 3, the outer wall of the protruding piece 31 is provided with an angle, and the length direction of the angle is consistent with the length direction of the connecting piece 3, so that the hand can better exert the rotating force and the risk of hand slipping is reduced when the operator holds the protruding piece 31.

[0040] Referring to Figure 3 and Figure 4 , the end of the locking piece 6 away from the connecting piece 3 is slidably connected with a locking piece 7, one side of the locking piece 6 is provided with a fixing piece 8 for fixing the position of the locking piece 7, and the outer wall of the connecting pipe 4 is provided with a locking groove 41 in a ring shape, so that when the position of the locking piece 6 is determined and is tightened on the connecting piece 3, the locking piece 7 is inserted into the locking groove 41, the position of the locking piece 7 is fixed by the fixing piece 8, so that the locking piece 7 is stably inserted into the locking groove 41, and the connection position relationship between the connecting pipe 4 and the connecting piece 3 is further locked.

[0041] The fixing piece 8 is in a ring shape, the inner wall of the fixing piece 8 is rotatably connected with the outer wall of the locking piece 6, the locking piece 6 is provided with a sliding groove 61, the locking piece 7 is inserted into the sliding groove 61, one end of the locking piece 7 is in a hemispherical shape, the outer wall of the locking piece 7 is connected with a convex ring 71, the convex ring 71 is slidably connected with the groove wall of the sliding groove 61, the locking piece 7 is slidably connected with the locking piece 6 through the convex ring 71, one side of the convex ring 71 is fixedly connected with an elastic piece 72, the end of the elastic piece 72 away from the convex ring 71 is fixedly connected with the locking piece 6, the fixing piece 8 is provided with a pop-out groove 81 for the locking piece 7 to pop out, when the locking piece 7 abuts against the end of the fixing piece 8 in a hemispherical shape, the end of the locking piece 7 away from the end in a hemispherical shape is inserted into the locking groove 41, and in this embodiment, the elastic piece 72 adopts a spring.

[0042] When the locking piece 6 is tightened, the locking piece 7 is located at the locking groove 41, the fixing piece 8 is rotated, the fixing piece 8 pushes the locking piece 7 to slide, the elastic piece 72 is compressed, the inner wall of the fixing piece 8 is in abutment with the hemispherical end of the locking piece 7, so that the locking piece 7 is inserted into the locking groove 41, when the locking piece 6 is separated from the connecting piece 3, the fixing piece 8 is rotated, the locking piece 7 is opposite to the ejection groove 81, the elastic piece 72 is released, the locking piece 7 is inserted into the ejection groove 81, so that the locking piece 7 is moved out of the locking groove 41, the locking piece 6 is tightened, and the locking piece 6 is separated from the connecting piece 3.

[0043] In order to make the locking piece 6 position determined, the locking piece 7 can be accurately aligned with the locking groove 41, the inner wall of the connecting piece 3 is fixedly connected with the limiting piece 9, and the limiting piece 9 is in abutment with the connecting pipe 4.

[0044] When the connecting pipe 4 is inserted into the connecting piece 3, in order to reduce the possibility of oil leakage, the connecting piece 3 is tightly attached to the connecting pipe 4, so that there is a certain resistance when the connecting pipe 4 is inserted into the connecting piece 3, it is difficult to determine whether the connecting pipe 4 abuts against the limiting piece 9, the outer wall of the connecting pipe 4 is provided with a limiting mark, the limiting mark is used for confirming the position of the connecting pipe 4 inserted into the connecting piece 3, the limiting mark can be realized by marking, marking or other visual methods, and can be set according to actual needs, so as to improve the accuracy of the position of the connecting pipe 4 inserted into the connecting piece 3 and reduce the leakage problem caused by improper position, in the embodiment, the limiting mark is a ring-shaped notch, and when the limiting mark is located on the overlapping line of the connecting pipe 4 and the connecting piece 3, the locking piece 7 can be inserted into the locking groove 41.

[0045] Referring to Figure 2 , both ends of the connecting piece 3 are chamfered and horn-shaped, the clamping piece 5 is annular with a triangular cross section, when the locking piece 6 is tightened, one side of the clamping piece 5 is tightly attached to one side of the connecting piece 3 which is chamfered and horn-shaped, guiding the clamping piece 5 to be inserted into the gap between the connecting piece 3 and the connecting pipe 4, under the action of the locking piece 6, the clamping piece 5 is compressed, so as to improve the connection tightness between the connecting piece 3 and the connecting pipe 4 and reduce the possibility of oil leakage.

[0046] The implementation principle of the embodiment 1 of the application is that when it is needed to connect the oil pump body 1 and the oil pipe 2, the oil pump body 1 and the oil pipe 2 are both welded and fixedly connected with two connecting pipes 4, the locking piece 6 and the clamping piece 5 are sequentially sleeved on the connecting pipe 4, then the two connecting pipes 4 are respectively inserted into two ends of the connecting piece 3, the locking piece 6 is screwed on the connecting pipe 4, the clamping piece 5 is compressed under the action of the locking piece 6, the connecting pipe 4 and the connecting piece 3 are tightly attached, so as to realize sealing, the whole installation process is simple and convenient, a traditional sealing ring is not needed, the oil leakage phenomenon caused by softening of the sealing ring is reduced, and the sealing performance of the connection between the oil pump and the oil pipe 2 is significantly improved.

[0047] Embodiment 2

[0048] Reference Figure 5 The difference from Embodiment 1 is that the clamping member 5 is in the shape of a ring with a circular cross section, and the clamping member 5 is made of a metal material with elasticity, and in this embodiment, the clamping member 5 is made of brass.

[0049] When the clamping member 5 is pressed by the locking member 6, the clamping member 5 deforms, and the clamping member 5 can uniformly press the connecting pipe 4, ensuring the close fit between the connecting pipe 4 and the connecting member 3, better adapting to the shape change of the connecting pipe 4, thereby further improving the sealing performance. At the same time, the elastic metal material can still maintain good resilience after multiple disassembly and assembly, ensuring the reliability and stability of long-term use.

[0050] The implementation principle of Embodiment 2 of the present application is that when the clamping member 5 is pressed by the locking member 6, the clamping member 5 deforms, so that the connecting pipe 4 and the connecting member 3 are closely fitted, further improving the sealing performance.

[0051] The above are preferred embodiments of the present application, and the embodiments are only an explanation of the present application, and do not limit the protection scope of the present application in sequence, so: all equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. An oil pump oil leakage preventing connection structure comprising an oil pump body (1), a connection assembly, and an oil pipe (2), the oil pump body (1) being communicated to the oil pipe (2) through the connection assembly, characterized in that, The connecting assembly comprises a connecting piece (3), connecting pipes (4), a clamping piece (5) and a locking piece (6), the connecting pipes (4) are symmetrically arranged at two ends of the connecting piece (3), the two connecting pipes (4) are connected to the oil pump body (1) and the oil pipe (2) respectively, the connecting pipes (4) are inserted into the connecting piece (3), the two connecting pipes (4) are connected through the connecting piece (3), the clamping piece (5) is annular, the inner wall of the clamping piece (5) abuts against the outer wall of the connecting pipe (4), the locking piece (6) is sleeved on the connecting pipe (4), the clamping piece (5) abuts against the locking piece (6), one end of the clamping piece (5) away from the locking piece (6) abuts against the connecting piece (3), and the locking piece (6) is threadedly connected with the connecting piece (3).

2. The oil pump oil leakage preventing connection structure according to claim 1, characterized by The middle part of the connecting piece (3) is provided with a protruding piece (31), and the outer wall of the protruding piece (31) is provided with an edge, and the length direction of the edge is consistent with the length direction of the connecting piece (3).

3. The oil pump oil leakage preventing connection structure according to claim 1, characterized by One end of the locking piece (6) away from the connecting piece (3) is slidably connected with a locking piece (7), one side of the locking piece (6) is provided with a fixing piece (8), the fixing piece (8) is used for fixing the position of the locking piece (7), the outer wall of the connecting pipe (4) is provided with a locking groove (41), the locking groove (41) is annular, and the locking piece (7) is inserted into the locking groove (41).

4. The oil pump oil leakage preventing connection structure according to claim 3, characterized by The fixing piece (8) is rotationally connected with the locking piece (6), one end of the locking piece (7) is hemispherical, the outer wall of the locking piece (7) is connected with a convex ring (71), the locking piece (7) is slidably connected with the locking piece (6) through the convex ring (71), the convex ring (71) is connected with an elastic piece (72), one end of the elastic piece (72) away from the convex ring (71) is connected with the locking piece (6), the fixing piece (8) is provided with a pop-out groove (81) for the locking piece (7) to pop out, and when the locking piece (7) abuts against the fixing piece (8), the locking piece (7) is inserted into the locking groove (41).

5. The oil pump oil leakage preventing connection structure according to claim 4, characterized by The outer wall of the connecting pipe (4) is provided with a limiting mark, and the limiting mark is used for confirming the position of the connecting pipe (4) inserted into the connecting piece (3).

6. The oil pump oil leakage preventing connection structure according to claim 1, characterized by The inner wall of the connecting piece (3) is connected with a limiting piece (9), and the limiting piece (9) abuts against the connecting pipe (4).

7. The oil pump oil leakage preventing connection structure according to claim 1, characterized by The two ends of the connecting piece (3) are chamfered horn-shaped, and the clamping piece (5) is annular with a triangular cross section.

8. The oil pump oil leakage preventing connection structure according to claim 1, characterized by The clamping piece (5) is annular with a circular cross section, and the clamping piece (5) is made of a metal material with elasticity.

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