CN217683318U

CN217683318U - Oil inlet valve

Info

Publication number: CN217683318U
Application number: CN202221809730.2U
Authority: CN
Inventors: 徐文友; 吕学华; 楚刚; 姜银福
Original assignee: Wuxi Sijin Industrial Automation Equipment Co ltd
Current assignee: Wuxi Sijin Industrial Automation Equipment Co ltd
Priority date: 2022-07-13
Filing date: 2022-07-13
Publication date: 2022-10-28
Anticipated expiration: 2032-07-13

Abstract

The utility model provides an oil inlet valve, which relates to the technical field of ultra-high pressure hydraulic pumps and comprises a spring, a valve seat and a valve plate; a through hole is formed in the valve seat along the axis of the valve seat; the through holes comprise upper through holes and lower through holes; the upper through hole is coaxially connected with the lower through hole; the diameter of the lower through hole is larger than that of the upper through hole; the valve plate is a plate-shaped part; the valve plate is arranged in the lower through hole; the valve plate is abutted against one end of the upper through hole; the valve plate completely covers an opening at one end of the upper through hole close to the lower through hole; the spring is arranged in the lower through hole; one end of the spring is pressed against the valve plate under the action of no external force. The utility model provides an oil mass loss that exists among the prior art many, the little problem of oil feed volume has reached increase oil feed volume for the beneficial effect of return stroke speed in order to reduce the oil mass loss.

Description

Oil inlet valve

Technical Field

The utility model relates to a superhigh pressure hydraulic pump technical field especially relates to an inlet valve.

Background

The oil inlet valve is an automatic valve which is usually used for enabling fuel oil to enter an oil pumping cavity, and oil inlet of a plunger pair is mainly controlled by an oil inlet spring seat and a steel ball on the oil inlet valve which is commonly used at present. The structure has the problems that the volume of the steel ball is large, so that the oil inlet volume of the oil inlet valve is small, and meanwhile, because the mass of the steel ball is heavy, after the oil inlet action of the oil inlet valve is finished, the spring is reset, the speed of the steel ball is low in the return stroke, and the loss of excessive oil is easily caused.

SUMMERY OF THE UTILITY MODEL

To the problem that exists, the utility model provides a pair of a plunger pair for radial piston pump can solve the oil mass loss that exists among the prior art many, and the problem that the oil feed volume is little reaches the increase oil feed volume for the return stroke speed is in order to reduce the beneficial effect of oil mass loss.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an oil inlet valve, which comprises a spring and is characterized by also comprising a valve seat and a valve plate; a through hole is formed in the valve seat along the axis of the valve seat; the through holes comprise an upper through hole and a lower through hole; the upper through hole is coaxially connected with the lower through hole; the diameter of the lower through hole is larger than that of the upper through hole; the valve plate is a plate-shaped part; the valve plate is arranged in the lower through hole; the valve plate is abutted against one end of the upper through hole; the valve plate completely covers an opening at one end of the upper through hole close to the lower through hole; the spring is arranged in the lower through hole; one end of the spring is propped against the valve plate under the action of no external force.

The oil inlet valve provided by the utility model preferably further comprises a plurality of supporting plates for preventing the valve plate from transversely deviating; the supporting plates are uniformly distributed around the valve plate; the supporting plate and the valve plate are positioned on the same plane; the support plate and the valve plate are integrally formed.

The oil inlet valve provided by the utility model has the advantages that preferably, one end of the upper through hole close to the lower through hole is provided with a circle of arc-shaped groove; the arc-shaped groove is sunken to the upper through hole along the opening edge of the upper through hole until the inner wall of the groove is connected with the inner side wall of the lower through hole; the opening of the arc-shaped groove faces the lower through hole.

The utility model provides an inlet valve, preferably, the spring is pagoda shape spring.

The utility model provides an inlet valve, preferably, the disk seat is close to the cutting of the one end outside of going up the through-hole has the round inclined plane.

The oil inlet valve provided by the utility model preferably further comprises a gasket; the gasket is annular; one end of the lower through hole, which is far away from the upper through hole, is provided with a circle of groove; the depth of the groove is consistent with the thickness of the gasket; one side of the groove close to the inner wall of the lower through hole is communicated with the lower through hole; the gasket is tightly attached to and fixed in the groove through the outer side wall of the gasket and the inner side wall of the groove; one end of the spring is abutted against the gasket.

The technical scheme has the following advantages or beneficial effects:

the utility model provides an oil inlet valve, which comprises a spring, a valve seat and a valve plate; a through hole is formed in the valve seat along the axis of the valve seat; the through holes comprise upper through holes and lower through holes; the upper through hole is coaxially connected with the lower through hole; the diameter of the lower through hole is larger than that of the upper through hole; the valve plate is a plate-shaped part; the valve plate is arranged in the lower through hole; the valve plate is abutted against one end of the upper through hole; the valve plate completely covers an opening at one end of the upper through hole close to the lower through hole; the spring is arranged in the lower through hole; one end of the spring is propped against the valve plate under the action of no external force. The utility model provides an oil mass loss that exists among the prior art many, the little problem of oil feed volume has reached increase oil feed volume for the beneficial effect of return stroke speed in order to reduce the oil mass loss.

Drawings

The invention and its features, aspects and advantages will become more apparent from a reading of the following detailed description of non-limiting embodiments with reference to the attached drawings. Like reference symbols in the various drawings indicate like elements. The drawings are not intended to be drawn to scale, emphasis instead being placed upon illustrating the principles of the invention.

Fig. 1 is a schematic structural view of an oil inlet valve provided in embodiment 1 of the present invention.

Fig. 2 is a valve plate schematic view of an oil inlet valve provided in embodiment 1 of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific examples, which should not be construed as limiting the invention.

Example 1:

the oil inlet valve provided by the embodiment 1 of the utility model comprises a spring 1, a valve seat 2 and a valve plate 3; a through hole is formed in the valve seat 2 along the axis of the valve seat 2; the through holes include an upper through hole 211 and a lower through hole 212; the upper through hole 211 is coaxially connected with the lower through hole 212; the diameter of the lower through hole 212 is larger than that of the upper through hole 211; the valve plate 3 is a plate-shaped part; the valve plate 3 is arranged in the lower through hole 212; the valve plate 3 is abutted against one end of the upper through hole 211; the valve plate 3 completely covers the opening at one end of the upper through hole 211 close to the lower through hole 212; the spring 1 is arranged in the lower through hole 212; one end of the spring 1 is propped against the valve plate 3 under the action of no external force. As shown in fig. 1, when the embodiment 1 of the present invention works, a partial vacuum is formed in the lower through hole 212, and the air pressure in the upper through hole 211 is greater than the air pressure in the lower through hole 212, so that the valve plate is pushed to the lower through hole 212 by the pressure in the upper through hole 211, and the spring 1 is in a compressed state, and the fluid is sucked into the lower through hole 212 through the upper through hole 211 and flows out. When the utility model discloses embodiment 1 finishes work, the fluid is discharged to last through-hole 211 in through-hole 212 down, and fluid pressure and spring 1's elasticity push valve plate 3 to last through-hole 211 direction this moment for valve plate 3 tightly supports the one end of leaning on last through-hole 211, thereby forms the confined space in the through-hole 212 down, prevents the fluid via last through-hole 211 outflow. And because the steel ball structure that prior art adopted, under the condition of the same through-hole diameter, in order to cover the through-hole and prevent the fluid from flowing through the through-hole down when the through-hole internal return stroke, the utility model discloses a valve plate compare the quality of steel ball can be lighter, and the volume accounts for than littleer for the volume increase in the inlet valve, and the elasticity of fluid pressure and spring can support the valve plate faster push back to and lean on to live the through-hole, thereby avoid because of the steel ball mass is heavy, the problem that the oil mass loss that rebound speed produced slowly is big, effectively reduce the loss of oil mass.

The utility model provides an inlet valve can avoid the inlet valve volume little, and the problem of the big scheduling of oil mass loss is through improving the steel ball structure commonly used for the valve plate, has increased the volume of inlet valve, has accelerated the speed of inlet valve plate return stroke after the oil feed finishes simultaneously to reach the effect that has effectively reduced the oil mass loss.

As shown in fig. 2, in order to prevent the valve plate 3 from generating a position deviation in the moving process, which results in that the valve plate 3 and the upper through hole 211 cannot be sealed, the embodiment 1 of the present invention further comprises a plurality of supporting plates for preventing the valve plate from laterally deviating; the support plates 32 are evenly arranged around the valve plate 3; the supporting plate 32 and the valve plate 3 are in the same plane; the support plate 32 is integrally formed with the valve plate 3. The diameter that the backup pad 32 has increased valve plate 3 has been equivalent to, and the holistic diameter of valve plate 3 is close down the diameter of through-hole 212 for the whole space that can control the skew that has not had in the through-hole under of valve plate, effectively fix valve plate 3 along through-hole axis reciprocating motion when guaranteeing fluid accessible valve plate 3, avoided because of the unable sealed or sealed poor scheduling problem of effect of through-hole that the valve plate offset leads to, thereby effectively reduced the loss of oil mass.

In order to avoid poor sealing effect of surface contact caused by the fact that the contact surface between the valve plate 3 and the upper through hole 211 is not processed precisely, in embodiment 1 of the present invention, one end of the upper through hole 211, which is close to the lower through hole 212, is provided with a circle of arc-shaped groove 23; the arc-shaped 23 groove is sunken into the groove 23 inner wall along the opening edge of the upper through hole 211 to the upper through hole 211 and is connected with the inner side wall of the lower through hole 212; the opening of the arc-shaped groove 23 faces the lower through hole 212. When the embodiment of the utility model provides an 1 during the oil feed is ended in the work, the valve plate changes line contact into by original face contact with last through-hole, and it is poor to have avoided because of the not meticulous sealed effect that leads to of contact surface processing, has effectively guaranteed the leakproofness in the disk seat to the loss of oil mass when reducing the oil yield.

More specifically, in embodiment 1 of the present invention, the spring 1 is a pagoda-shaped spring. When the embodiment 1 of the utility model provides a during operation, more energy can be stored to more ordinary compression spring of pagoda shape spring comparison, bears more pressure under the same deformation, consequently has longer life, when embodiment 1 finishes the oil feed simultaneously, and pagoda shape spring has bigger elasticity can further accelerate the return stroke of valve plate, reduces the loss of oil mass.

When the utility model discloses embodiment 1 during operation, disk seat 2 is fixed in the inside of high-pressure pump, breaks away from out the high-pressure pump in order to prevent disk seat 2 because of high-pressure environment leads to, and the one end outside cutting that is close to through-hole 211 at disk seat 2 has round inclined plane 24 for can extrude into the round mounting in disk seat lateral surface and high-pressure pump laminating department, the disk seat that makes produces deformation pressure with high-pressure pump laminating department, thereby increases the fastness of inlet valve.

More specifically, in embodiment 1 of the present invention, the present invention further includes a gasket 4; the gasket 4 is annular; one end of the lower through hole 212 far away from the upper through hole 211 is provided with a circle of grooves 22; the depth of the groove 22 is consistent with the thickness of the gasket 4; one side of the groove 22 close to the inner wall of the lower through hole 212 is communicated with the lower through hole 212; the gasket 4 is tightly attached and fixed in the groove 22 through the outer side wall of the gasket 4 and the inner side wall of the groove 22; one end of the spring 1 is pressed against the gasket 4. When the embodiment 1 of the utility model is in operation, the opening end face of lower through-hole 212 and the oil inlet terminal surface in the high-pressure pump need sealing connection, and because in actual production, there is roughness on two sealed faces, it is not parallel yet, consequently insert a gasket between two connection seal faces, lean on the tight gasket of external force pressure, make its own take place elasticity or plastic deformation to fill up the microcosmic unevenness on the sealed face and make it adapt to the irregularity on sealed face, in order to reach sealed purpose.

To sum up, the utility model provides a pair of fuel inlet valve, it is many to have effectively solved the oil mass loss that exists among the prior art, and the problem that the oil feed volume is little reaches increase oil feed volume for the beneficial effect of return stroke speed in order to reduce the oil mass loss.

Those skilled in the art will appreciate that variations may be implemented by those skilled in the art in combination with the prior art and the above-described embodiments, and will not be described in detail herein. Such variations do not affect the essence of the present invention, and are not described herein.

The above description is directed to the preferred embodiment of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that devices and structures not described in detail are understood to be implemented in a manner common in the art; any person skilled in the art may make numerous possible variations and modifications, or amendments to equivalent embodiments of the invention, without departing from the technical solution of the invention, without affecting the essential content of the invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention all still fall within the protection scope of the technical solution of the present invention, where the technical entity does not depart from the content of the technical solution of the present invention.

Claims

1. The utility model provides an oil feed valve, includes the spring, its characterized in that still includes: a valve seat and a valve plate;

a through hole is formed in the valve seat along the axis of the valve seat; the through holes comprise upper through holes and lower through holes;

the upper through hole is coaxially connected with the lower through hole; the diameter of the lower through hole is larger than that of the upper through hole;

the valve plate is a plate-shaped part; the valve plate is arranged in the lower through hole; the valve plate is abutted against one end of the upper through hole; the valve plate completely covers an opening at one end of the upper through hole close to the lower through hole;

the spring is arranged in the lower through hole; one end of the spring is propped against the valve plate under the action of no external force.

2. The fuel inlet valve of claim 1, further comprising a plurality of support plates for preventing lateral displacement of the valve plate; the supporting plates are uniformly distributed around the valve plate; the supporting plate and the valve plate are positioned on the same plane; the support plate and the valve plate are integrally formed.

3. The fuel inlet valve of claim 1, wherein a circle of arc-shaped groove is formed at one end of the upper through hole, which is close to the lower through hole; the arc-shaped groove is sunken towards the upper through hole along the opening edge of the upper through hole until the inner wall of the groove is connected with the inner side wall of the lower through hole; the opening of the arc-shaped groove faces the lower through hole.

4. The fuel inlet valve of claim 1, wherein said spring is a pagoda-shaped spring.

5. The fuel inlet valve of claim 1, wherein a bevel is cut on the outer side of the end of the valve seat adjacent to the upper through hole.

6. The fuel inlet valve of claim 1, further comprising a gasket; the gasket is annular; one end of the lower through hole, which is far away from the upper through hole, is provided with a circle of groove; the depth of the groove is consistent with the thickness of the gasket; one side of the groove close to the inner wall of the lower through hole is communicated with the lower through hole; the gasket passes through the lateral wall of gasket with the recess inside wall closely laminates fixedly in the recess.