CN212272347U - Oil pump high-pressure valve capable of changing flow direction and oil pump - Google Patents

Abstract

The utility model provides an oil pump high pressure valve capable of changing flow direction and an oil pump adopting the high pressure valve, wherein the high pressure valve comprises a valve hole arranged on the oil pump body, a spring, a valve core and a plug arranged in the valve hole, and the bottom of the valve hole is provided with an oil drainage hole extending along the axial direction of the valve hole; the valve core is a cover body with a notch on the periphery, a through hole is arranged in the middle of the plug, the valve core is in clearance fit with the inner wall of the valve hole, and the pretightening force of the spring forces the outer side surface of the valve core to be attached to the inner side surface of the plug; high-pressure oil in the oil pump high-pressure cavity flows to the lateral surface of jam through the oil circuit to the lateral surface that sees through the through-hole that blocks up and act on the case, is greater than when oil pressure during the pretightning force of spring, high-pressure oil promotes case and removes to the valve opening, makes case and jam separation, and high-pressure oil flows through the through-hole that blocks up in proper order, the breach of case, valve opening, draining hole and carries out the pressure release. The high-pressure valve has a simple structure and is suitable for being mounted on an external pump.

Description

Oil pump high-pressure valve capable of changing flow direction and oil pump

Technical Field

The utility model relates to an internal-combustion engine lubricating system technical field, in particular to high-pressure valve and an oil pump.

Background

In the prior art, a high-pressure valve is usually required to be mounted on an oil pump for pressure relief, and the high-pressure valve can be a steel ball valve or a plunger valve according to the structure. The conventional steel ball valve and the plunger valve basically seal oil in a conical surface mode, or seal oil in a radial mode on the excircle of the plunger, and the oil drainage direction is generally radial oil drainage, namely an oil drainage groove is opened in the direction perpendicular to the axis A1 of the spring in the figure 1. However, for the external pump, if the external pump is designed to be radial oil drainage, structural designs such as oil drainage fluid sealing, dark oil passage and introduction of oil drained by the valve into the low-pressure cavity are considered, so that the volume and weight of the oil pump design are increased, the process cost is increased, and even the problems of mismatching with the boundary of a client installation machine and the like may exist.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide an oil pump high-pressure valve capable of changing the flow direction, which can simplify the structure of the pump body, thereby reducing the manufacturing cost; the to-be-solved technical problem of the present invention is to provide an oil pump with the above-mentioned high pressure valve.

In order to solve the technical problem, the utility model discloses a technical scheme about high-pressure valve is: a high-pressure valve of an oil pump for changing the flow direction comprises a valve hole arranged on a pump body of the oil pump, a spring, a valve core and a plug, wherein the spring, the valve core and the plug are arranged in the valve hole; the valve core is a cover body with a notch on the periphery, a through hole is formed in the middle of the plug, the valve core is in clearance fit with the inner wall of the valve hole, and the pretightening force of the spring forces the outer side face of the valve core to be attached to the inner side face of the plug; high-pressure oil in the oil pump high-pressure cavity flows to through the oil circuit the lateral surface of jam to the through-hole that sees through the jam acts on the lateral surface of case, and when oil pressure was greater than during the pretightning force of spring, high-pressure oil pushed the case and removed to the valve opening, made case and jam separation, high-pressure oil flows through the through-hole that blocks up in proper order, the breach of case, valve opening, draining hole and carries out the pressure release.

Among the above-mentioned technical scheme, because the middle part of jam is equipped with the through-hole, the case is the lid body that the periphery has the breach, and the bottom of valve opening is equipped with the draining hole that extends along valve opening axial direction, just so make high-pressure oil drain along valve opening axial, contrast with the radial draining contrast of conventional design, through changing the draining direction, the sealed design problem of valve draining has been solved, there is not the darkroom design, also there is not the clay sand that causes because of casting the dark oil duct, washing difficulty problems such as arch, thereby manufacturing cost has been reduced. Therefore, such a high-pressure valve is very suitable for mounting on an external oil pump.

Preferably, the periphery of the valve core is provided with three notches, so that the valve core is integrally formed into a three-jaw structure.

Further, a flat washer is arranged between the spring and the valve core. The flat washer is used as a middle transition part between the disc valve and the spring, so that the spring force can be transmitted between the end face of the spring and the valve core through the flat washer.

In one embodiment, the plug is an interference fit with the inner wall of the valve bore.

The utility model discloses a technical scheme is about oil pump: the utility model provides an oil pump, includes the pump body, pump cover, install on the pump body the utility model discloses in change oil pump high-pressure valve of flow direction.

Drawings

FIG. 1 is a schematic view of an overall structure of an oil pump equipped with a high pressure valve according to an embodiment of the present invention;

FIG. 2 is a schematic flow diagram of the high pressure valve of FIG. 1 during draining;

FIG. 3 is an enlarged partial schematic view of FIG. 1;

fig. 4 is a schematic view of a valve core structure in an embodiment of the present invention;

fig. 5 is a schematic view of a three-dimensional structure of a valve core in an embodiment of the present invention;

the reference signs are:

1-block 2-valve core 3-flat washer

4-spring 5-pump body 6-pump cover

7-oil drainage hole.

Detailed Description

In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.

In the description of the present invention, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. In the description of the present invention, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, mechanically or electrically connected, or interconnected between two elements, directly or indirectly through intervening media, and the specific meaning of the terms may be understood by those skilled in the art according to their specific situation.

Example 1

As shown in fig. 1 to 5, a high pressure valve of an oil pump for changing a flow direction, the high pressure valve includes a valve hole provided on an oil pump body 5, and a spring 4, a valve core 2 and a plug 1 installed in the valve hole, and a drain hole 7 extending in an axial direction of the valve hole is provided at a bottom of the valve hole; the valve core 2 is a cover body with a notch on the periphery, a through hole is arranged in the middle of the plug 1, the valve core 2 is in clearance fit with the inner wall of the valve hole, the outer side surface of the valve core 2 is forced to be attached to the inner side surface of the plug 1 by the pretightening force of the spring 4, and the plug 1 is in interference fit with the inner wall of the valve hole; high-pressure oil in the oil pump high-pressure cavity flows to the lateral surface that blocks up 1 through the oil circuit on the pump cover 6 to the through-hole that sees through to block up 1 acts on the lateral surface of case 2, and when oil pressure was greater than the pretightning force of spring 4, high-pressure oil pushed case 2 and removed in to the valve opening, made case 2 and the separation that blocks up 1, high-pressure oil flows through the through-hole that blocks up 1 in proper order, the breach of case 2, valve opening, draining hole 7 and carries out the pressure release.

As shown in fig. 4 and 5, the periphery of the valve core is provided with three notches, so that the valve core is integrally formed into a three-claw structure. As shown in fig. 3, a flat washer 3 is also provided between the spring and the valve core. The flat washer 3 is used as a middle transition part between the disc valve and the spring, and the spring force can be transmitted between the end face of the spring and the valve core through the flat washer.

Example 2

An oil pump as shown in fig. 1 comprises a pump body 5 and a pump cover 6, wherein the pump body 5 is provided with an oil pump high-pressure valve which changes the flow direction as described in embodiment 1.

The above-mentioned embodiment is the utility model discloses the implementation scheme of preferred, in addition, the utility model discloses can also realize by other modes, any obvious replacement is all within the protection scope of the utility model under the prerequisite that does not deviate from this technical scheme design.

In order to make it easier for those skilled in the art to understand the improvement of the present invention over the prior art, some drawings and descriptions of the present invention have been simplified, and in order to clarify, some other elements have been omitted from this document, those skilled in the art should recognize that these omitted elements may also constitute the content of the present invention.

Claims (5)

1. A change oil pump high-pressure valve of flow direction which characterized in that: the high-pressure valve comprises a valve hole arranged on an oil pump body (5), a spring (4), a valve core (2) and a plug (1) which are arranged in the valve hole, and an oil drainage hole (7) extending along the axial direction of the valve hole is formed in the bottom of the valve hole; the valve core (2) is a cover body with notches on the periphery, a through hole is formed in the middle of the plug (1), the valve core (2) is in clearance fit with the inner wall of the valve hole, and the pretightening force of the spring (4) forces the outer side face of the valve core (2) to be attached to the inner side face of the plug (1); high-pressure oil in the oil pump high-pressure cavity flows through the oil circuit and blocks up the lateral surface of (1) to the through-hole that permeates and block up (1) acts on the lateral surface of case (2), and when oil pressure was greater than during the pretightning force of spring (4), high-pressure oil pushed case (2) and removed in the valve opening, made case (2) and blockked up (1) separation, high-pressure oil flows through the through-hole that blocks up (1), the breach of case (2), valve opening, draining hole (7) in proper order and carries out the pressure release.

2. The redirecting oil pump high pressure valve of claim 1, wherein: the periphery of the valve core (2) is provided with three notches, so that the valve core (2) is integrally formed into a three-jaw structure.

3. The redirecting oil pump high pressure valve of claim 1, wherein: a flat gasket (3) is arranged between the spring (4) and the valve core (2).

4. The redirecting oil pump high pressure valve of claim 1, wherein: the plug (1) is in interference fit with the inner wall of the valve hole.

5. The utility model provides an oil pump, includes pump body (5), pump cover (6), its characterized in that: the pump body (5) is provided with a high-pressure valve of the oil pump changing the flow direction according to any one of claims 1 to 4.

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