CN214092567U

CN214092567U - Prevent hydraulic oil pump of leakage

Info

Publication number: CN214092567U
Application number: CN202023086387.7U
Authority: CN
Inventors: 徐瑞良; 赵小田; 申柳洋
Original assignee: Yitu Hydraulic Engineering Technology Changzhou Co ltd
Current assignee: Yitu Hydraulic Engineering Technology Changzhou Co ltd
Priority date: 2020-12-19
Filing date: 2020-12-19
Publication date: 2021-08-31
Anticipated expiration: 2030-12-19

Abstract

The application relates to a leakage-proof hydraulic oil pump, which comprises a pump body, wherein the pump body comprises two oil pipes for oil inlet and oil outlet, the oil pipes are provided with openings, the oil pipes are provided with damping mechanisms, each damping mechanism comprises a connecting pipe arranged on the oil pipe, and the damping mechanisms also comprise butt-joint pipes arranged on the connecting pipes; oil pipe the connecting pipe with the butt joint pipe is the pipe, and the connecting pipe both ends all are equipped with the opening, also all are equipped with the opening to the butt joint pipe both ends, and the connecting pipe is along axis direction and oil pipe sliding connection, and the butt joint pipe is along the direction and the connecting pipe sliding connection of perpendicular to self axis, and seamless sealing connection between the opening of oil pipe and the one end opening of connecting pipe, sealing connection between the opening that the connecting pipe deviates from oil pipe and the one end opening of butt joint pipe. This application has the effect that improves the leakproofness at pipeline kneck.

Description

Prevent hydraulic oil pump of leakage

Technical Field

The application relates to the technical field of oil pumps, in particular to a leakage-proof hydraulic oil pump.

Background

The hydraulic pump is a power element of a hydraulic system, and is an element which is driven by an engine or an electric motor, sucks oil from a hydraulic oil tank, forms pressure oil, discharges the pressure oil and sends the pressure oil to an execution element.

At present, patent document with publication number CN202348749U discloses a hot oil pump, which comprises a base, and a pump body and a motor mounted on the base, wherein the pump body is provided with a pump cover, the pump cover is connected with a pump shaft, the pump shaft is provided with a bearing seat, a support for supporting the bearing seat is arranged between the bearing seat and the base, and the pump shaft and the motor are respectively connected through a pump coupling and a motor coupling.

In view of the above related technologies, the inventor thinks that when the hot oil pump works, the motor works to generate vibration, which causes the pipe joint where the pump body is connected with other components in the hydraulic system to generate large impact due to vibration, thereby easily causing the pipe joint to be damaged and affecting the sealing performance.

SUMMERY OF THE UTILITY MODEL

In order to improve the leakproofness at the pipeline interface department, this application provides a hydraulic oil pump of preventing leaking.

The application provides a prevent hydraulic oil pump of leakage adopts following technical scheme:

a leakage-proof hydraulic oil pump comprises a pump body, wherein the pump body comprises two oil pipes for oil inlet and oil outlet, the oil pipes are provided with openings, the oil pipes are provided with damping mechanisms, each damping mechanism comprises a connecting pipe arranged on the oil pipe, and the damping mechanisms also comprise butt-joint pipes arranged on the connecting pipes; oil pipe the connecting pipe with the butt joint pipe is the pipe, and the connecting pipe both ends all are equipped with the opening, also all are equipped with the opening to the butt joint pipe both ends, and the connecting pipe is along axis direction and oil pipe sliding connection, and the butt joint pipe is along the direction and the connecting pipe sliding connection of perpendicular to self axis, and seamless sealing connection between the opening of oil pipe and the one end opening of connecting pipe, sealing connection between the opening that the connecting pipe deviates from oil pipe and the one end opening of butt joint pipe.

Through adopting above-mentioned technical scheme, when the pump body provides fluid for hydraulic system, the pump body is connected with other pipelines or equipment in the oil circuit through the butt joint pipe, and because can take place relative motion along the axial between connecting pipe and the oil pipe, can take place relative motion along the direction of perpendicular to axis again between butt joint pipe and the connecting pipe, thereby connecting pipe and oil pipe, be connected between butt joint pipe and the connecting pipe and be non-rigid connection, when pump body work produced vibrations, the striking that each pipeline kneck produced can be cushioned, the leakproofness of pipeline joint has been improved, be favorable to reducing the probability that fluid takes place to leak.

Optionally, the connecting pipe deviates from the fixed limit flange that is provided with of open-ended inner wall of oil pipe, fixed two limit ring seats that are provided with on the open-ended outer wall that butt joint pipe and connecting pipe are connected, limit flange and limit ring seat are the annular slab, are provided with the clearance the same with limit flange's thickness between two limit ring seats, and limit flange inserts and establishes between two limit ring seats.

Through adopting above-mentioned technical scheme, sliding connection relatively between spacing flange and the spacing ring seat, laminating each other between spacing flange and the spacing ring seat, make the gap between spacing flange and the spacing ring seat be in sealed state, realized connecting pipe and butt joint between the pipe sealed and sliding connection.

Optionally, the outer diameter of the connecting pipe is equal to the inner diameter of the oil pipe, the connecting pipe is slidably connected in the oil pipe, a butt-joint ring is fixedly arranged on the inner wall of the oil pipe, a corrugated pipe is arranged between the connecting pipe and the oil pipe, one end of the corrugated pipe is fixedly connected on the butt-joint ring in a seamless sealing manner, and the other end of the corrugated pipe is fixedly connected at the edge of an opening of the connecting pipe in the oil pipe in a seamless sealing manner.

Through adopting above-mentioned technical scheme, the bellows can stretch out and draw back along the length direction of self to when having satisfied realizing mutual sealing connection between connecting pipe and the oil pipe, make the slip that can be free between connecting pipe and the oil pipe, thereby buffering vibrations.

Optionally, the inner ring of the limiting flange is fixedly provided with a rubber ring, and the rubber ring abuts against the two limiting ring seats simultaneously.

Through adopting above-mentioned technical scheme, the sealing performance between limit flange and two limit ring seats can be improved to the rubber circle, reduces the probability that fluid leaked from the clearance between two limit ring seats.

Optionally, a flange is arranged at an opening of the end part of the butt joint pipe, which is away from the connecting pipe.

Through adopting above-mentioned technical scheme, the flange can make things convenient for user of service to be connected the equipment among the hydraulic system and part through flange and butt joint pipe, has improved the practicality and the convenience of device.

Optionally, a through oil hole is formed in the side wall, connected with the connecting pipe, of the oil pipe.

Through adopting above-mentioned technical scheme, user of service can fill lubricating oil between connecting pipe and the oil pipe through the oil filler hole, makes in lubricating oil can get into the clearance between connecting pipe and the oil pipe, makes the relative slip between connecting pipe and the oil pipe can be more smooth and easy.

Optionally, a filter block is installed in the connecting pipe, and the filter block is of a cylindrical structure which is coaxial with the connecting pipe and has the same diameter as the diameter of the inner ring of the connecting pipe.

Through adopting above-mentioned technical scheme, the filter block can filter the fluid that gets into in the pump body, helps reducing the damage that the structure of impurity in the fluid caused to the pump body inside.

Optionally, the inner wall of the connecting pipe is fixedly provided with two retaining rings, a distance is arranged between the two retaining rings, and the filter block is arranged between the two retaining rings.

Through adopting above-mentioned technical scheme, keep off the ring and can inject the position of filter block, can avoid making filter block and connecting pipe break away from each other when the too high or the velocity of flow of oil pressure in the connecting pipe is too fast, guaranteed that the filter block carries out filterable reliability to fluid.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the connection between the connecting pipe and the oil pipe and the connection between the butt joint pipe and the connecting pipe are non-rigid connections, when the pump body works to generate vibration, the impact generated at each pipeline interface can be buffered, the sealing performance of the pipeline interfaces is improved, and the probability of oil leakage is favorably reduced;

2. the limiting flange is in relative sliding connection with the limiting ring seat, and the limiting flange and the limiting ring seat are mutually attached, so that a gap between the limiting flange and the limiting ring seat is in a sealed state, and the sealing and sliding connection between the connecting pipe and the butt joint pipe is realized;

3. the bellows can stretch out and draw back along the length direction of self to when having satisfied and having realized mutual sealing connection between connecting pipe and the oil pipe, make the slip that can be free between connecting pipe and the oil pipe, thereby buffering vibrations.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 2 is a partial schematic view of a shock absorbing mechanism at a in fig. 1 to show the shock absorbing mechanism.

Description of reference numerals: 1. a pump body; 11. an oil pipe; 111. a docking ring; 112. an oil filler hole; 2. an electric motor; 3. a damping mechanism; 31. a connecting pipe; 311. a limiting flange; 312. a rubber ring; 313. a baffle ring; 32. butt-joint pipes; 321. a limit ring seat; 322. a flange; 4. a bellows; 5. and (7) a filtering block.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses hydraulic oil pump of preventing leaking. Referring to fig. 1 and 2, the leakage-proof hydraulic oil pump includes a pump body 1, a motor 2 for driving the pump body 1 to operate, and a leakage-proof damping mechanism 3 mounted on the pump body 1, wherein the pump body 1 includes two oil pipes 11 for oil inlet and outlet, the damping mechanism 3 is mounted on each oil pipe 11, the oil pipes 11 are used for connecting with other components or devices in a hydraulic system, and the oil pipes 11 are cylindrical tubular structures and are provided with openings.

Referring to fig. 1 and 2, the damping mechanism 3 includes a connecting pipe 31 sleeved in the oil pipe 11, the connecting pipe 31 is a cylindrical pipe and both ends of the cylindrical pipe are provided with openings, the outer diameter of the connecting pipe 31 is the same as the inner diameter of the oil pipe 11, the outer wall of the connecting pipe 31 is attached to the inner wall of the oil pipe 11, so that the connecting pipe 31 is slidably connected in the oil pipe 11, and a part of the connecting pipe 31 extends to the outside of the opening of the oil pipe 11, a limiting flange 311 is fixedly arranged at the opening of the connecting pipe 31 outside the oil pipe 11, the limiting flange 311 is of a circular plate-shaped structure, and the limiting flange 311 is coaxially fixed to the connecting pipe 31, the outer ring of the limiting flange 311 is fixed at the opening edge of the connecting pipe 31, and the diameter of the inner ring of the limiting flange 311 is smaller than that of the connecting pipe 31.

Referring to fig. 1 and 2, the damping mechanism 3 further includes a butt pipe 32 installed on the connecting pipe 31, the butt pipe 32 is a cylindrical pipe and has openings at both ends, the outer diameter of the butt pipe 32 is smaller than the diameter of the inner ring of the limit flange 311, a limit ring seat 321 is fixedly disposed on the outer wall of the opening at one end of the butt pipe 32, the limit ring seat 321 is a circular plate-shaped structure, two limit ring seats 321 are disposed, the two limit ring seats 321 are disposed in parallel, the distance between the two limit ring seats 321 is the same as the thickness of the limit flange 311, the inner ring of the limit ring seat 321 is fixed on the outer wall of the butt pipe 32, the diameter of the outer ring of the limit ring seat 321 is larger than the diameter of the inner ring of the limit flange 311 but smaller than the diameter of the inner ring of the connecting pipe 31, the limit flange 311 is inserted in the gap between the two limit ring seats 321, so that, and because the thickness of the limit flange 311 is the same with the distance between two limit ring seats 321, therefore the limit flange 311 and the limit ring seats 321 are mutually attached, the gap between the two limit ring seats 321 can be sealed, the movable connection between the butt joint pipe 32 and the connecting pipe 31 is realized, the limit ring seats 321 can avoid the limit flange 311 from deviating from the limit ring seats 321, when the pump body 1 works and shakes, the butt joint pipe 32 and the connecting pipe 31 are in non-rigid connection, and the impact generated at the interface of the pipeline connected with the butt joint pipe 32 is favorably reduced.

Referring to fig. 1 and 2, in order to improve the sealing performance between the limit flange 311 and the limit ring seat 321, a rubber ring 312 is fixedly arranged on an inner ring of the limit flange 311, the rubber ring 312 has an annular structure with the same diameter as that of the inner ring of the limit flange 311, and the rubber ring 312 abuts against the surfaces of the two limit ring seats 321, so that the sealing performance between the limit ring seat 321 and the limit flange 311 is improved, the probability of liquid leakage from a gap between the limit ring seat 321 and the limit flange 311 is favorably reduced, and the reliability of the device is ensured.

Referring to fig. 1 and 2, in order to avoid the separation between the butt joint pipe 32 and the connection pipe 31, and to buffer the relative motion between the connection pipe 31 and the oil pipe 11 along the axial direction under the action of vibration, a butt joint ring 111 is fixedly arranged on the inner wall of the oil pipe 11, the butt joint ring 111 is in a circular ring plate-shaped structure, the outer ring of the butt joint ring 111 is fixed on the inner wall of the oil pipe 11, a corrugated pipe 4 is installed between the butt joint ring 111 and the opening of the connection pipe 31 in the oil pipe 11, the corrugated pipe 4 is an elastic circular pipe which is provided with a corrugated groove on the outer wall and can expand and contract along the axial direction, openings are arranged at both ends of the corrugated pipe 4, one end of the corrugated pipe 4 is fixedly connected with the surface of the butt joint ring 111 facing the opening of the oil pipe 11, the other end of the corrugated pipe 4 is fixedly connected with the edge of the opening of the connection pipe 31 in the oil pipe 11, and the connection parts of the corrugated pipe 4, the butt joint ring 111 and the connection pipe 31 are fixed in a seamless seal, therefore, when the pump body 1 is in operation, if the connection pipe 31 moves axially relative to the oil pipe 11 due to vibration, the bellows 4 can buffer the axial relative movement between the connection pipe 31 and the oil pipe 11 while ensuring the relative sealing connection between the connection pipe 31 and the oil pipe 11, thereby improving the reliability of the device.

Referring to fig. 1 and 2, a flange 322 is fixedly disposed on an edge of the end opening of the butt joint pipe 32 away from the connection pipe 31, a plurality of threaded holes are formed in the flange 322, and the flange 322 and the threaded holes can facilitate a user to connect other devices or components in the hydraulic system to the butt joint pipe 32.

Referring to fig. 1 and 2, an oil filling hole 112 is formed in a side wall of the oil pipe 11 connected to the connecting pipe 31, the oil filling hole 112 penetrates through the side wall of the oil pipe 11, and a user can conveniently inject lubricating oil into the oil pipe 11 through the oil filling hole 112, so that the lubricating oil is filled in a gap between the oil pipe 11 and the connecting pipe 31, and therefore friction force is smaller when relative sliding occurs between the connecting pipe 31 and the side wall of the oil pipe 11, and the connecting pipe is smoother during movement.

Referring to fig. 1 and 2, a filter block 5 is installed in the connecting pipe 31, the filter block 5 is a cylindrical block, the diameter of the filter block 5 is the same as the diameter of the inner ring of the connecting pipe 31, and the filter block 5 and the connecting pipe 31 are coaxially arranged, in this embodiment, the filter block 5 is made of sponge, the filter block 5 can filter the liquid entering and exiting the oil pipe 11, which is beneficial to reducing the damage of the impurities in the liquid to the internal structure of the pump body 1, in addition, the inner wall of the connecting pipe 31 is fixedly provided with two baffle rings 313, the baffle rings 313 are in a circular plate structure, the outer rings of the baffle rings 313 are fixed on the inner wall of the connecting pipe 31, the two baffle rings 313 are provided, a distance is provided between the two baffle rings 313, the filter block 5 is arranged between the two baffle rings 313, when the pressure of the liquid in the pipeline is higher, the baffle ring 313 can limit the position of the filter block 5, and the filter block 5 is prevented from being separated from the connecting pipe 31.

The implementation principle of the hydraulic oil pump of this application embodiment of preventing leaking does: the connecting pipe 31 can form sliding connection with the oil pipe 11 through the corrugated pipe 4, when the pump body 1 vibrates, the connecting pipe 31 can slide relative to the oil pipe 11 along the axis direction, in addition, relative movement can be generated between the butt joint pipe 32 and the connecting pipe 31 along the radial direction through the sliding connection relation between the limiting flange 311 and the limiting ring seat 321, so that when the pump body 1 vibrates, the connection between the connecting pipe 31 and the oil pipe 11 is non-rigid, the connection between the butt joint pipe 32 and the connecting pipe 31 is also non-rigid, impact of a pipeline interface caused by the vibration of the pump body 1 is reduced, the sealing performance of the pipeline interface is improved, and oil leakage prevention is facilitated.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a hydraulic oil pump of preventing leaking, includes the pump body (1), and the pump body (1) includes two oil pipe (11) that are used for the oil feed and produce oil, and oil pipe (11) are equipped with opening, its characterized in that: the damping mechanism (3) is mounted on the oil pipe (11), the damping mechanism (3) comprises a connecting pipe (31) mounted on the oil pipe (11), and the damping mechanism further comprises a butt joint pipe (32) mounted on the connecting pipe (31);

oil pipe (11) connecting pipe (31) with butt joint pipe (32) are the pipe, and connecting pipe (31) both ends all are equipped with the opening, and butt joint pipe (32) both ends also all are equipped with the opening, and axis direction and oil pipe (11) sliding connection are followed in connecting pipe (31), and direction and connecting pipe (31) sliding connection along perpendicular to self axis are followed to butt joint pipe (32), and seamless sealing connection between the opening of oil pipe (11) and the one end opening of connecting pipe (31), and sealing connection between the opening that deviates from oil pipe (11) in connecting pipe (31) and the one end opening of butt joint pipe (32).

2. A leak resistant hydraulic oil pump as defined in claim 1, wherein: the connecting pipe (31) deviates from the inner wall of the opening of the oil pipe (11) is fixedly provided with a limiting flange (311), the outer wall of the opening, connected with the connecting pipe (31), of the butt joint pipe (32) is fixedly provided with two limiting ring seats (321), the limiting flange (311) and the limiting ring seats (321) are circular annular plates, a gap which is the same as the thickness of the limiting flange (311) is arranged between the two limiting ring seats (321), and the limiting flange (311) is inserted between the two limiting ring seats (321).

3. A leak-proof hydraulic oil pump according to claim 1 or 2, characterized in that: the outer diameter of the connecting pipe (31) is equal to the inner diameter of the oil pipe (11), the connecting pipe (31) is connected in the oil pipe (11) in a sliding mode, a butt joint ring (111) is fixedly arranged on the inner wall of the oil pipe (11), the corrugated pipe (4) is arranged between the connecting pipe (31) and the oil pipe (11), one end of the corrugated pipe (4) is fixedly connected to the butt joint ring (111) in a seamless sealing mode, and the other end of the corrugated pipe (4) is fixedly connected to the edge of an opening, located in the oil pipe (11), of the connecting pipe (31).

4. A leak resistant hydraulic oil pump as defined in claim 2, wherein: the inner ring of the limiting flange (311) is fixedly provided with a rubber ring (312), and the rubber ring (312) abuts against the two limiting ring seats (321) simultaneously.

5. A leak-proof hydraulic oil pump according to claim 1 or 2, characterized in that: and a flange (322) is arranged at an opening of the end part of the butt joint pipe (32) deviating from the connecting pipe (31).

6. A leak resistant hydraulic oil pump as defined in claim 3, wherein: and a through oil hole (112) is formed in the side wall, connected with the connecting pipe (31), of the oil pipe (11).

7. A leak-proof hydraulic oil pump according to claim 1 or 2, characterized in that: install filter block (5) in connecting pipe (31), filter block (5) are with connecting pipe (31) coaxial arrangement, and the diameter is the same cylinder structure with connecting pipe (31) inner circle diameter.

8. A leak resistant hydraulic oil pump as defined in claim 7, wherein: two retaining rings (313) are fixedly arranged on the inner wall of the connecting pipe (31), a distance is arranged between the two retaining rings (313), and the filter block (5) is arranged between the two retaining rings (313).