CN111457235A

CN111457235A - Oil pump body capable of improving volume efficiency and oil pump

Info

Publication number: CN111457235A
Application number: CN202010421986.5A
Authority: CN
Inventors: 袁彬容; 许仲秋; 刘光明; 佘笑梅; 刘铁飞
Original assignee: Hunan Oil Pump Co Ltd
Current assignee: Hunan Oil Pump Co Ltd
Priority date: 2020-05-18
Filing date: 2020-05-18
Publication date: 2020-07-28

Abstract

The invention provides an oil pump body capable of improving the volume efficiency, wherein a rotor cavity for accommodating a rotor, an oil inlet and an oil outlet are arranged on the pump body, a low-pressure groove and a high-pressure groove are arranged at the bottom of the rotor cavity, the oil outlet direction of the oil outlet is opposite to the rotation direction of the rotor, a partition plate is arranged at one section of the high-pressure groove close to the oil outlet, and the partition plate divides the part of the high-pressure groove into an upper layer and a lower layer. The invention also provides an oil pump capable of improving the volumetric efficiency, and the oil pump adopts the oil pump body in the technical scheme. The baffle is arranged at one end, close to the oil outlet, of the pump body high-pressure groove, so that the impact of the oil pumping direction and the direction of the rotor with oil entering the high-pressure cavity can be reduced, the volumetric efficiency of the pump is improved, and the pressure fluctuation is reduced.

Description

Oil pump body capable of improving volume efficiency and oil pump

Technical Field

The invention relates to a lubricating system, in particular to an oil pump body and an oil pump adopting the same.

Background

When the oil outlet direction of an oil outlet on a pump body of the oil pump is opposite to the rotation direction of the rotor, the oil brought into the high-pressure cavity by the rotor is impacted with the oil moving towards the direction of the oil outlet, so that the pressure is unstable, the flow of the oil is lost, even a vortex is formed, the volumetric efficiency of the pump is reduced, and the pressure fluctuation is relatively high due to the impact in the high-pressure cavity.

Disclosure of Invention

The invention aims to provide an oil pump body and an oil pump capable of improving volumetric efficiency.

In order to solve the technical problems, the technical scheme of the pump body of the invention is as follows: the oil pump body is provided with a rotor cavity for accommodating a rotor, an oil inlet and an oil outlet, a low-pressure groove and a high-pressure groove are formed in the bottom of the rotor cavity, the oil outlet direction of the oil outlet is opposite to the rotation direction of the rotor, a partition board is arranged at one section, close to the oil outlet, of the high-pressure groove, and the partition board divides the part of the high-pressure groove into an upper layer and a lower layer.

The technical scheme of the invention about the oil pump is as follows: an oil pump capable of improving volumetric efficiency adopts the oil pump body in the technical scheme.

In one embodiment, the oil pump is a gerotor pump.

In one embodiment, the oil pump is a vane pump.

In one embodiment, the oil pump is a fixed displacement pump or a variable displacement pump.

The invention has the beneficial effects that: the baffle is arranged at one end, close to the oil outlet, of the pump body high-pressure groove, so that the impact of the oil pumping direction and the direction of the rotor with oil entering the high-pressure cavity can be reduced, the volumetric efficiency of the pump is improved, and the pressure fluctuation is reduced. The pump body of this structure can be applied to a vane pump or a rotor pump.

Drawings

FIG. 1 is a schematic diagram of a pump body according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the AA line of FIG. 1;

the reference signs are:

1-oil inlet 2-oil outlet 3-low pressure groove

4-high pressure groove 5-clapboard.

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.

It should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are used broadly in the present invention, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Further, in the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or may comprise the first and second features being in contact, not in direct contact, but via another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature. The terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the invention.

Example 1

As shown in fig. 1 and 2, the oil pump body capable of improving the volumetric efficiency is provided with a rotor cavity for accommodating a rotor, an oil inlet 1 and an oil outlet 2, a low-pressure groove 3 and a high-pressure groove 4 are arranged at the bottom of the rotor cavity, the high-pressure groove 4 is communicated with the oil outlet 2, the oil outlet direction of the oil outlet 2 is opposite to the rotation direction of the rotor, a partition plate 5 is arranged at a section of the high-pressure groove 4 close to the oil outlet 2, and the partition plate 5 divides the part of the high-pressure groove 4 into an upper layer and a lower layer.

Example 2

A rotor pump capable of improving volumetric efficiency adopts the oil pump body in the embodiment 1, and the oil pump can be a fixed displacement pump or a variable displacement pump.

Example 3

A vane pump capable of improving volumetric efficiency adopts the oil pump body in the embodiment 1, and the oil pump can be a fixed displacement pump or a variable displacement pump.

The above embodiments are preferred implementations of the present invention, and the present invention can be implemented in other ways without departing from the spirit of the present invention.

Some of the drawings and descriptions of the present invention have been simplified to facilitate the understanding of the improvements over the prior art by those skilled in the art, and some other elements have been omitted from this document for the sake of clarity, and it should be appreciated by those skilled in the art that such omitted elements may also constitute the subject matter of the present invention.

Claims

1. The utility model provides a can improve volumetric efficiency's oil pump body, be equipped with the rotor chamber, oil inlet (1), oil-out (2) that are used for holding the rotor on the pump body, the bottom in rotor chamber is equipped with low-pressure groove (3) and high-pressure groove (4), high-pressure groove (4) with oil-out (2) communicate with each other, the play oil direction and the rotor rotation opposite direction of oil-out (2), its characterized in that: a partition plate (5) is arranged at one section, close to the oil outlet (2), of the high-pressure groove (4), and the partition plate (5) divides the part of the high-pressure groove (4) into an upper layer and a lower layer.

2. An oil pump capable of improving volumetric efficiency is characterized in that: the oil pump adopts the oil pump body in claim 1.

3. The oil pump capable of improving volumetric efficiency according to claim 2, characterized in that: the oil pump is a rotor pump.

4. The oil pump capable of improving volumetric efficiency according to claim 2, characterized in that: the oil pump is a vane pump.

5. The oil pump capable of improving volumetric efficiency according to claim 3 or 4, characterized in that: the oil pump is a fixed displacement pump or a variable displacement pump.