Engine oil one-way valve

Abstract

The utility model relates to the technical field of engine oil one-way valves, and particularly discloses an engine oil one-way valve which comprises a valve body, a valve seat is arranged at the upper end of the valve body, a valve element is arranged in the valve body, a spring is fixedly installed between the valve element and the valve seat, and a sealing gasket is arranged at the bottom end of the valve element. The sealing gasket and the valve element are integrally formed through a vulcanization process, the valve body, the valve seat and the valve element are all manufactured through a thin steel plate stretching process, and an oil outlet and an oil inlet are formed in the outer wall and the bottom end of the valve body respectively. The valve body, the valve element and the valve seat are made of thin steel plates, the valve element is manufactured through the thin steel plate drawing technology, cost is lower, the rubber sealing gasket is designed on the valve element, the steel valve element and the rubber sealing gasket are manufactured into a whole through the rubber vulcanization technology, and therefore it is guaranteed that the valve element has the sealing performance of rubber and the abrasion resistance of steel.

Description

Technical Field

[0001] This utility model relates to the field of oil check valve technology, specifically an oil check valve. Background Technology

[0002] An oil check valve is a device that prevents the backflow of engine oil, ensuring that the oil flows in one direction to all parts that require lubrication.

[0003] An existing oil check valve is made of metal sheet or bar stock that has not undergone a stretching process, which results in relatively high manufacturing costs. Furthermore, some existing oil check valves do not have a sealing gasket, while others have a sealing gasket, but the gasket is not integrated with the valve core, leading to insufficient sealing performance and wear resistance of the valve core. Therefore, there is a need to propose an oil check valve. Utility Model Content

[0004] The purpose of this utility model is to provide an oil check valve, which can be manufactured by using thin steel plate as the material for valve body, valve core and valve seat, and by thin steel plate stretching process, which reduces the cost. Furthermore, the valve core and sealing gasket are manufactured as one piece by rubber vulcanization process, which can ensure both the sealing performance and wear resistance of the valve core.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an oil check valve, comprising a valve body, a valve seat at the upper end of the valve body, a valve core inside the valve body, a spring fixedly installed between the valve core and the valve seat, a sealing gasket at the bottom end of the valve core, the sealing gasket being integrally formed with the valve core through a vulcanization process, and the valve body, valve seat, and valve core being manufactured using a thin steel plate stretching process.

[0006] To facilitate the entry and exit of engine oil into and out of the valve body, in a preferred embodiment of the present invention, the outer wall and bottom of the valve body are respectively provided with an oil outlet and an oil inlet.

[0007] In order to ensure a tight connection between the valve seat and the valve body, in a preferred embodiment of the oil check valve of this utility model, the valve seat is integrally formed with the valve body by interference fit.

[0008] To enhance the sealing between the valve seat and the valve body, a sealing ring is preferably installed at the interference fit joint between the valve seat and the valve body, which is a preferred embodiment of the oil check valve of this utility model.

[0009] In order to facilitate a more uniform pressure distribution of the fluid inside the valve body, the valve body of the oil check valve of this utility model is preferably cylindrical.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] Compared to traditional oil check valves, this invention uses thin steel plates as the material for the valve body, valve core, and valve seat, and is manufactured through a thin steel plate stretching process, resulting in lower costs.

[0012] Compared to traditional oil check valves, this device features a rubber sealing gasket on the valve core. The steel valve core and the rubber sealing gasket are manufactured as one piece through a rubber vulcanization process. This ensures that the valve core has both the sealing performance of rubber and the wear resistance of steel (due to friction between the valve core and the valve body during movement). Attached Figure Description

[0013] Figure 1 This is an overall structural diagram of the present invention;

[0014] Figure 2 This is a cross-sectional view of the one-way valve of this utility model in the open state;

[0015] Figure 3 This is a cross-sectional view of the one-way valve of this utility model in the closed state.

[0016] In the diagram: 1. Valve body; 2. Oil outlet; 3. Sealing gasket; 4. Oil inlet; 5. Valve core; 6. Sealing ring; 7. Valve seat; 8. Spring. Detailed Implementation

[0017] Please see Figures 1 to 3 An oil check valve includes a valve body 1, a valve seat 7 at the upper end of the valve body 1, a valve core 5 inside the valve body 1, a spring 8 fixedly installed between the valve core 5 and the valve seat 7, and a sealing gasket 3 at the bottom end of the valve core 5. The sealing gasket 3 is integrally formed with the valve core 5 through a vulcanization process. The valve body 1, valve seat 7, and valve core 5 are all manufactured using a thin steel plate stretching process.

[0018] In this embodiment: the sealing gasket 3 and the valve core 5 are manufactured as one piece by rubber vulcanization process. During operation, the sealing gasket 3 moves together with the valve core 5. The valve body 1, valve core 5 and valve seat 7 are all manufactured by thin steel plate stretching process, which increases the sealing performance of the valve core 5. When the valve core 5 reciprocates inside the valve body 1, it rubs against the valve body 1, and the sealing gasket 3 increases the wear resistance of the valve core 5.

[0019] As a technical optimization of this utility model, the outer wall and bottom of the valve body 1 are respectively provided with an oil outlet 2 and an oil inlet 4.

[0020] In this embodiment: when the oil pressure difference between the oil inlet 4 and the oil outlet 2 can overcome the resistance of the spring 8, the sealing gasket 3 at the lower end of the valve core 5 does not abut against the valve body 1, and at this time the valve core 5 is in a state of attachment. Figure 3 The valve is in the open state; otherwise, valve core 5 is closed.

[0021] As a technical optimization of this utility model, the valve seat 7 is integrated with the valve body 1 by interference fit.

[0022] In this embodiment, the valve seat 7 is integrated with the valve body 1 by welding or interference fit, which can make the valve seat 7 and the valve body 1 tightly connected.

[0023] As a technical optimization of this utility model, a sealing ring 6 is installed at the junction of the valve seat 7 and the valve body 1 where they are interference fit.

[0024] In this embodiment: when the valve seat 7 and the valve body 1 are fitted with an interference fit, the sealing ring 6 can increase the sealing performance between the valve seat 7 and the valve body 1.

[0025] As a technical optimization of this utility model, the valve body 1 is cylindrical.

[0026] In this embodiment, the valve body 1 is cylindrical, which is beneficial for a more uniform pressure distribution of the fluid inside the valve body 1.

[0027] Working principle: The sealing gasket 3 and valve core 5 are manufactured as one piece through rubber vulcanization process. When the oil pressure difference between the oil inlet 4 and the oil outlet 2 can overcome the resistance of the spring 8, the valve core 5 opens; otherwise, the valve core 5 closes. During operation, when the pressure at the oil inlet 4 is greater than the resistance of the spring 8, the sealing gasket 3 moves with the valve core 5, and the valve core 5 opens. By using thin steel plate stretching process to manufacture the valve body 1, the sealing performance of the valve core 5 is increased. When the valve core 5 reciprocates inside the valve body 1, it rubs against the valve body 1, and the sealing performance of the valve core 5 is increased through the sealing gasket 3.

[0028] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An oil check valve, comprising a valve body (1), wherein a valve seat (7) is provided at the upper end of the valve body (1), a valve core (5) is provided inside the valve body (1), and a spring (8) is fixedly installed between the valve core (5) and the valve seat (7), characterized in that: The bottom end of the valve core (5) is provided with a sealing gasket (9). The sealing gasket (9) is integrally formed with the valve core (5) by a vulcanization process. The valve body (1), valve seat (7) and valve core (5) are all manufactured by a thin steel plate stretching process.

2. The oil check valve according to claim 1, characterized in that: The valve body (1) has an oil outlet (2) and an oil inlet (4) on its outer wall and bottom, respectively.

3. The oil check valve according to claim 1, characterized in that: The valve seat (7) is integrally formed with the valve body (1) by interference fit.

4. The oil check valve according to claim 1, characterized in that: A sealing ring (6) is installed at the junction of the valve seat (7) and the valve body (1) with an interference fit.

5. The oil check valve according to claim 1, characterized in that: The valve body (1) is cylindrical.

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