CN219034839U

CN219034839U - High-temperature-resistant and long-service-life bypass valve of oil filter

Info

Publication number: CN219034839U
Application number: CN202223147260.0U
Authority: CN
Inventors: 郭利平; 盛建设; 吴翼鹏; 孙焕斌
Original assignee: Xinxiang Pingyuan Fluid Control Technology Co ltd
Current assignee: Xinxiang Pingyuan Fluid Control Technology Co ltd
Priority date: 2022-11-27
Filing date: 2022-11-27
Publication date: 2023-05-16
Anticipated expiration: 2032-11-27

Abstract

The utility model provides a high-temperature-resistant and long-service-life bypass valve of an oil filter, which aims to solve the problems of poor pressure maintaining performance, short service life and no high temperature resistance of the existing bypass valve. The utility model comprises a valve body and a valve core, wherein a discharging hole is arranged on the side wall of the valve body, the valve core is arranged in a cavity of the valve body, the end part of the valve core is propped against a boss at the end part of the valve body, the boss is arranged at the feeding end of the valve body, a positioning cavity is arranged in the valve core, one end of a spring is arranged in the positioning cavity, the other end of the spring is arranged on a positioning table at the end part of a fixing screw, and the fixing screw is in threaded connection with the end part of the valve body. The application adopts the position of fixing screw and case location chamber joint fixation spring. The fixing screw can be detached, so that the bypass valve is convenient to clean and replace, the service life is long, and the bypass valve is not easy to damage. The device realizes the effect of surface sealing through the cylindrical surface of the valve core, and has good sealing performance and strong pressure maintaining capability. When in use, the valve is opened 50000 times in the use environment of the engine oil temperature of 80-120 ℃, and the elastic force of the spring is attenuated by not more than 5%.

Description

High-temperature-resistant and long-service-life bypass valve of oil filter

Technical Field

The utility model belongs to the field of valves, and particularly relates to a bypass valve of a filter.

Background

The diesel engine oil filter is positioned in a diesel engine lubrication system, and engine lubrication oil needs a certain flow and pressure to enable the engine to normally operate. When the filter is used for a period of time, the filter paper and the cooler are gradually blocked, so that the engine gradually generates higher engine oil pressure, and when the engine oil pressure is larger than the opening pressure of the bypass valve, the bypass valve is opened, so that unfiltered or uncooled engine oil flows into the main oil duct through the valve hole to lubricate, and the interruption of the engine oil in the main oil duct of the engine is avoided.

The existing bypass valve has the structures of ball valve, plunger valve and the like. Each has characteristics when in use, but the following problems exist in use: the pressure maintaining performance of the engine oil is to be improved, the oil pressure is not stable in use, the service life of the bypass valve is short, and the engine oil can not meet the requirement of opening pressure after being opened for a certain number of times at high temperature.

Disclosure of Invention

The utility model aims to provide a high-temperature-resistant and long-service-life bypass valve of an oil filter, so as to solve the problems of poor pressure maintaining performance, short service life and no high temperature resistance of the existing bypass valve.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a high temperature resistant, long-life oil cleaner bypass valve, includes valve body and case, is equipped with the discharge opening on the valve body lateral wall, and the case setting is in the cavity of valve body, and case tip top is on the boss of valve body tip, and the boss is at the feed end of valve body, is equipped with the location chamber in the case, and spring one end setting is in the location intracavity, and the spring other end setting is on the location bench of set screw tip, and set screw spiro union is in the valve body tip.

And the end surface of the fixing screw, which is in contact with the valve body, is provided with a sealing gasket.

The outer wall of the feeding end of the valve body is provided with a groove body for accommodating the sealing ring.

The spring is made of 50CrSi material; the valve core is made of GCr15 material.

The application adopts the position of fixing screw and case location chamber joint fixation spring. The fixing screw can be detached, so that the bypass valve is convenient to clean and replace, the service life is long, and the bypass valve is not easy to damage. The device realizes the effect of surface sealing through the cylindrical surface of the valve core, and has good sealing performance and strong pressure maintaining capability. When in use, the valve is opened 50000 times in the use environment of the engine oil temperature of 80-120 ℃, and the elastic force of the spring is attenuated by not more than 5%.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a schematic structural view of the valve core.

Fig. 3 is a schematic structural view of the valve body.

Fig. 4 is a schematic structural view of the set screw.

In the figure: the valve comprises a valve core 1, a valve body 2, a spring 3, a fixing screw 4, a gasket 5, a cavity 6, a positioning cavity 7, a positioning table 8, a boss 9, a discharge hole 10 and a groove 11.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 to 4, the bypass valve of the oil filter with high temperature resistance and long service life comprises a valve body 2 and a valve core 1, wherein the valve body 2 can be made of 45# steel, and the valve core 1 is made of GCr 15. 6 discharge holes 10 are uniformly distributed on the side wall of the valve body 2 along the circumferential direction, the valve core 1 is arranged in the cavity 6 of the valve body 2, the end part of the valve core 1 is propped against the boss 9 at the end part of the valve body 2, the boss 9 is arranged at the feeding end of the valve body 2, the boss 2 is used for limiting the movement of the valve body 2, a positioning cavity 7 is arranged in the valve core 1, one end of the spring 3 is arranged in the positioning cavity 7, the other end of the spring 3 is arranged on the positioning table 8 at the end part of the fixing screw 4, and the fixing screw 4 is connected with the end part of the valve body 2 in a threaded manner. The spring 3 is made of 50CrSi material. In this application, the following benefits are achieved by using the set screw 4: 1. the positioning of the spring is facilitated; 2. when the bypass valve is used for a long time and impurities enter, the fixing screw 4 can be removed, and the inside of the bypass valve is cleaned; the bypass valve is reused; 3. if the pressure of the bypass valve needs to be adjusted, the spring is replaced.

The working process of the utility model is as follows: as shown in fig. 1 (arrow indicates fluid flow direction), the left side of the valve body 2 is a feed port, and is connected to the filter, and lubricating oil passes through the feed port of the valve body 2 and contacts the left end face of the valve core 1. When the pressure of the lubricating oil is increased during blockage or failure, and when the pressure is larger than the compression force of the spring 3, the valve core 1 moves rightwards, so that the discharge hole 10 is displayed, the bypass valve is opened, and the lubricating oil flows out through the discharge hole 10 and enters the main oil duct of the engine lubricating system. The requirements of engine operation on the flow rate and the pressure of lubricating oil are met. When the pressure of the filter is reduced, the spring 3 pushes the valve core 1 to move leftwards to block the discharge hole 10, and the bypass valve is closed at the moment.

The opening pressure of the bypass valve in the normal temperature test is 120-150KPa, and the closing pressure of the bypass valve in 3min is not lower than 80KPa; when the valve core is matched with the valve body, burrs of parts are required to be removed completely, the valve core moves stably and smoothly in the valve body, and the clamping stagnation phenomenon is avoided. The spring is made of high-temperature-resistant 50CrSi material, and the elastic force attenuation is not more than 5% when the valve is opened 50000 times in the use environment of engine oil at 80-120 ℃.

Preferably, in order to further secure the pressure and the tightness, the present application provides a sealing gasket 5 at the end face of the fixing screw 4 in contact with the valve body 2. The sealing gasket 5 has certain elasticity and can prevent hydraulic oil from overflowing from a gap between the outer wall of the screw 4 and the valve body.

In order to make the better realization of connection of valve body 2 and filter sealed, this application is equipped with the cell body 11 that holds the sealing washer on valve body 2 feed end outer wall, places O type sealing washer in cell body 11 when the equipment, can improve sealed effect.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides an oil cleaner bypass valve of high temperature resistant, long-life, includes valve body (2) and case (1), its characterized in that: be equipped with discharge opening (10) on valve body (2) lateral wall, case (1) set up in cavity (6) of valve body (2), and case (1) tip pushes up on boss (9) of valve body (2) tip, boss (9) are at the feed end of valve body (2), are equipped with location chamber (7) in case (1), spring (3) one end sets up in location chamber (7), the spring (3) other end sets up on positioning table (8) of set screw (4) tip, set screw (4) spiro union is in valve body (2) tip.

2. The high temperature resistant, long life oil filter bypass valve of claim 1, wherein: the end face of the fixing screw (4) contacted with the valve body (2) is provided with a sealing gasket (5).

3. The high temperature resistant, long life oil filter bypass valve of claim 1, wherein: the outer wall of the feeding end of the valve body (2) is provided with a groove body (11) for accommodating the sealing ring.

4. A high temperature resistant, long life oil filter bypass valve according to any one of claims 1 to 3, characterized in that: the spring (3) is made of 50CrSi material.

5. A high temperature resistant, long life oil filter bypass valve according to any one of claims 1 to 3, characterized in that: the valve core (1) is made of GCr15 material.