CN204371448U - A kind of filter cleaner with safety check - Google Patents

Abstract

The utility model discloses a filter with a check valve, which belongs to automobile parts and solves the problem of accelerated wear of the parts due to untimely oil supply. Including the main body and the filter element, the main body is provided with an inner cavity, and the filter element is set in the inner cavity of the main body. The filter element divides the inner cavity into a first filter chamber and a second filter chamber which are isolated from each other. The inlet is connected with the first filter chamber, and the oil outlet is connected with the second filter chamber. The filter element is provided with an end cover, and the end cover is provided with a first check valve. The first check valve can close the oil inlet, and the oil outlet is provided with a second check valve. Return valve, the second check valve passes through the oil outlet and can close the oil outlet, the second check valve is provided with a spring, and the spring is against the inner wall of the second filter chamber at the oil outlet. When the vehicle is in any state, it can ensure that the oil chamber and the lubrication system are filled with oil, so as to ensure that the system maintains good lubrication, reduce the wear of parts and prolong the service life of the engine.

Description

A filter with check valve

technical field

The utility model relates to auto parts, in particular to a filter with a check valve.

Background technique

It is difficult for the filter in the prior art to ensure that the engine oil can be fully supplied to the engine system at any time, which may cause the engine oil chamber and lubricating parts to be in a state of oil shortage when the vehicle is cold started, thereby causing accelerated wear of parts.

Contents of the invention

The purpose of the utility model is to provide a filter with a check valve, which can ensure that the oil chamber and the lubricating system are filled with oil when the vehicle is in any state, thereby ensuring that the system maintains good lubrication.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a filter with a check valve, including a body and a filter element, the body is provided with an inner cavity, the filter element is arranged in the inner cavity of the body, and the filter element divides the inner cavity into The first filter chamber and the second filter chamber are isolated from each other. The main body is provided with an oil inlet and an oil outlet. The oil inlet is connected with the first filter chamber, and the oil outlet is connected with the second filter chamber. There is a first check valve, the first check valve can close the oil inlet, the oil outlet is provided with a second check valve, the second check valve passes through the oil outlet and can close the oil outlet.

The engine oil enters the first filter chamber from the oil inlet by pushing the first check valve, and then enters the second filter chamber after being filtered by the filter element, and then pushes the second check valve to flow out from the oil outlet to supply subsequent equipment, such as the engine system, etc. When stopping the oil supply, the machine oil injected from the machine oil inlet stops injecting, and the first check valve and the second check valve return to the position of closing the machine oil inlet and machine oil outlet.

Further, the second check valve is provided with a spring, the spring is against the inner wall of the second filter chamber at the oil outlet, and the spring has a tendency to make the second check valve close the oil outlet.

Further, the oil inlet is an annular port, and the first check valve includes an annular shrapnel, the inner side of the shrapnel is fixed to the end cover and is airtightly attached to the inner side of the oil inlet, and the outer side of the shrapnel can be in contact with the outer side of the oil inlet. From or against, the elastic force of the shrapnel produces a tendency to make the outside of the shrapnel contact the outside of the oil inlet. When the engine oil is injected from the oil inlet, the hydraulic pressure at the oil inlet is greater than the pressure in the first filter chamber, and the outside of the shrapnel is pushed away from the outside of the oil inlet, so that the oil can enter the first filter chamber.

Further, the shrapnel is a nitrile rubber sheet. The shrapnel of the nitrile rubber sheet has good elasticity and high tensile strength, heat resistance, oil resistance, air tightness, hardness and other performance characteristics, and has a long service life.

After adopting the technical scheme, the utility model has the following advantages:

When the vehicle is in any state, it can ensure that the oil chamber and the lubrication system are filled with oil, so as to ensure that the system maintains good lubrication, reduce the wear of parts and prolong the service life of the engine.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described:

Fig. 1 is a schematic diagram of the state of supplying engine oil in an embodiment of the utility model;

Fig. 2 is a schematic diagram of the state of stopping oil supply in the embodiment of Fig. 1 .

Detailed ways

Shown in Fig. 1, 2 is a kind of embodiment of the present utility model.

A filter with a check valve, comprising a body 1 and a filter element 2, the body 1 is provided with an inner cavity 10, the filter element 2 is arranged in the inner cavity 10 of the body 1, and the filter element 2 divides the inner cavity 10 into a second section isolated from each other. A filter chamber 11 and a second filter chamber 12, the body 1 is provided with an oil inlet 13 and an oil outlet 14, the oil inlet 13 communicates with the first filter chamber 11, the oil outlet 14 communicates with the second filter chamber 12, and the filter element 2 is provided with End cover 20, end cover 20 is provided with first check valve 3, and first check valve 3 can close engine oil inlet 13, and engine oil inlet 13 is annular mouth, and first check valve 3 comprises ring-shaped shrapnel 31, and shrapnel 31 The inner side is fixed to the end cover 20 and is airtightly attached to the inner side of the oil inlet 13. The outer side of the shrapnel 31 can be separated from or opposed to the outer side of the oil inlet 13. The elastic force of the shrapnel 31 makes the outer side of the shrapnel 31 and the outer side of the oil inlet 13 resist. When the oil is injected from the oil inlet 13, the hydraulic pressure at the oil inlet 13 is greater than the pressure in the first filter chamber 11, and the outside of the shrapnel 31 is pushed away from the outside of the oil inlet 13, so that the oil can enter the first filter chamber 11, The shrapnel 31 is a nitrile rubber sheet. The shrapnel 31 of the nitrile rubber sheet has good elasticity, high tensile strength, heat resistance, oil resistance, air tightness, hardness and other performance characteristics, and has a long service life. The return valve is inlaid on the end cover of the filter element by one-time injection molding, the bond is firm, and the process is simple; the oil outlet 14 is provided with a second check valve 4, and the second check valve 4 passes through the oil outlet 14 and can seal the oil. Outlet 14, second check valve 4 is provided with spring 41, and spring 41 and the inner wall of second filter chamber 12 at engine oil outlet 14 resist, and spring 41 produces the trend that makes second check valve 4 close engine oil outlet 14.

The engine oil pushes the first check valve 3 from the oil inlet 13 and enters the first filter chamber 11, and then enters the second filter chamber 12 after being filtered by the filter element 2, and then pushes the second check valve 4 to flow out from the oil outlet 14 for subsequent supply. Equipment, such as the engine system, etc., when the oil supply is stopped and the oil supply is stopped, the oil injected from the oil inlet 13 is stopped, and the first check valve 3 and the second check valve 4 return to the position of closing the oil inlet 13 and the oil outlet 14 .

When the vehicle is in any state, it can ensure that the oil chamber and the lubrication system are filled with oil, so as to ensure that the system maintains good lubrication, reduce the wear of parts and prolong the service life of the engine.

In addition to the above-mentioned preferred embodiment, the utility model also has other implementation modes, those skilled in the art can make various changes and deformations according to the utility model, as long as they do not depart from the spirit of the utility model, all should belong to the appended rights of the utility model The scope defined by the requirement.

Claims (4)

1. A filter with a check valve, characterized in that: it comprises a body (1) and a filter element (2), the body is provided with an inner cavity (10), the filter element is located in the inner cavity of the body, and the filter element wraps the inner cavity It is divided into the first filter chamber (11) and the second filter chamber (12) which are isolated from each other. The main body is provided with an oil inlet (13) and an oil outlet (14). The oil inlet is connected with the first filter chamber, and the oil outlet is connected with the second filter chamber. The second filter chamber is connected, the filter element is provided with an end cover (20), the end cover is provided with a first check valve (3), the first check valve can close the oil inlet, and the oil outlet is provided with a second check valve (4), The second check valve passes through the oil outlet and can close the oil outlet. 2. A filter with a check valve according to claim 1, characterized in that: the second check valve is provided with a spring (41), and the spring is against the inner wall of the second filter chamber at the oil outlet , the spring produces a tendency to make the second check valve close the oil outlet. 3. A filter with a check valve according to claim 1 or 2, characterized in that: the oil inlet is an annular port, and the first check valve includes an annular shrapnel (31), the shrapnel The inner side of the shrapnel is fixed to the end cover and tightly fitted to the inner side of the oil inlet. The outer side of the shrapnel can be separated from or opposed to the outer side of the oil inlet. The elastic force of the shrapnel tends to make the outer side of the shrapnel contact the outer side of the oil inlet. 4. A filter with a check valve according to claim 3, characterized in that: said shrapnel is a nitrile rubber sheet.