Spring plunger type engine oil pressure regulating valve for engine

Abstract

The utility model provides a spring plunger type engine oil pressure regulating valve for an engine, and belongs to the field of all-terrain vehicles. According to the structure, a flow channel is formed in a valve body, a columnar section is arranged on the flow channel, a columnar pin is in sliding fit with the columnar section, an annular groove is formed in the outer wall of the columnar pin, a check ring is fixedly connected to the annular groove, an annular table is arranged at the end of the columnar section, and the valve body is connected with the columnar pin or the check ring through a spring. The check ring abuts against the annular table. According to the utility model, a steel ball structure is changed into a columnar pin structure, and meanwhile, a guide channel is designed for the columnar pin. When engine oil is subjected to pressure relief, the stress area acting on the outer side of the columnar pin is not changed, the pressure relief spring is stressed uniformly, the oil pressure stability is ensured, and the stability of a lubricating system can be effectively ensured by combining the guiding effect of the columnar section on the columnar pin. By applying the pressure relief valve, a series of faults of the engine caused by the failure of the pressure relief valve can be effectively reduced, so that the maintenance cost is saved.

Description

Technical Field

[0001] The utility model belongs to the field of all-terrain vehicles, and particularly relates to a spring plunger type oil pressure regulating valve for an engine. Background Art

[0002] In the prior art, most pressure relief valves use a spring and steel ball structure to achieve pressure relief (the structure is as shown in Figure 1 ). The working principle of this structure is as follows: After the engine works normally for a period of time, when the pressure in the engine reaches the specified limit value, the oil pressure regulating valve will relieve pressure. At this time, the oil pressure in the engine will act on the surface of the steel ball. The steel ball is pressed by the spring, and then the engine oil is relieved through the instant opening of the steel ball. After the pressure relief is completed, the steel ball automatically returns to its original position by the spring force.

[0003] The disadvantage of this structure is that: when the oil pressure is relieved and the steel ball opens instantaneously, it can be seen from the structure that the force-bearing area of the steel ball increases instantaneously, and the pressure relief valve spring has no guiding force. The disadvantage of this structure is that under the long-term repetition of this action, there may be a risk that the pressure relief valve spring cannot return to its original position after being compressed, resulting in unstable oil pressure in the engine and a series of problems such as the failure of the lubrication system. Summary of the Invention

[0004] The utility model aims at the technical defects of the prior art and provides a spring plunger type oil pressure regulating valve for an engine to solve the technical problems that in the prior art, the conventional spring and steel ball valve core structure is prone to failure due to uneven force and unstable stroke.

[0005] To achieve the above technical purposes, the utility model adopts the following technical solutions:

[0006] A spring plunger type oil pressure regulating valve for an engine, comprising a valve body, a flow channel, a columnar section, a columnar pin, an annular groove, a retaining ring, an annular platform, and a spring. Among them, a flow channel is provided in the valve body, a columnar section is provided on the flow channel, the columnar pin is slidably matched with the columnar section, an annular groove is provided on the outer wall of the columnar pin, a retaining ring is fixedly connected to the annular groove, an annular platform is provided at the end of the columnar section, and the valve body is connected to the columnar pin or the retaining ring through the spring. When the spring is released, the retaining ring presses against the annular platform.

[0007] Preferably, the contact surface between the retaining ring and the annular platform is a plane, and this plane is perpendicular to the axis of the columnar pin.

[0008] Preferably, both the columnar pin and the columnar section are in a cylindrical shape.

[0009] Preferably, the axis of the columnar pin coincides with the axis of the spring.

[0010] Preferably, a reduced-diameter section is provided at the end of the columnar pin, and the diameter of the end of the reduced-diameter section is smaller than the diameter of its root.

[0011] In the above technical solution, the valve body is the main body structure of the pressure regulating valve, and the internal flow channel is the channel through which engine oil is relieved. In this channel, a columnar section is provided and is inserted and matched with a columnar pin. Based on the matching structure of the two, the columnar pin can be guided by the columnar section during movement, ensuring that the columnar pin and the spring move only along their axis directions, thus guaranteeing the stability of the stroke. Moreover, during the pressure relief process, the area of one side of the columnar pin facing the direction of the engine oil flow remains unchanged all the time. This uniformity of the force-bearing area makes the spring receive uniform force, ensuring both stable oil pressure and not being prone to failure. The mating surface between the columnar pin and the columnar section is a sealing surface for closing the flow channel. The annular groove on the columnar pin is used to arrange a retaining ring, and the retaining ring cooperates with the annular platform in the valve body to play a limiting role.

[0012] The present utility model provides a spring plunger type engine oil pressure regulating valve for an engine. This technical solution changes the steel ball structure to a columnar pin structure. At the same time, a guiding channel is designed for the columnar pin. When the engine oil is relieved, the force-bearing area acting on the outside of the columnar pin remains unchanged, and the pressure relief spring receives uniform force, ensuring stable oil pressure. Combined with the guiding effect of the columnar section on the columnar pin, it can effectively guarantee the stability of the lubrication system. The present utility model is applicable to the engine for the power output of all-terrain vehicles, used to adjust the engine oil pressure in the engine, and can effectively reduce a series of engine faults caused by the failure of the pressure relief valve, thus saving the maintenance cost. Description of the Drawings

[0013] Figure 1 is a schematic diagram of a conventional spring and steel ball valve core structure;

[0014] Figure 2 is a schematic diagram of the present utility model;

[0015] In the figure:

[0016] 1. Valve body 2. Flow channel 3. Columnar section 4. Columnar pin 5. Annular groove 6. Retaining ring 7. Annular platform 8. Spring 9. Steel ball. Detailed Embodiments

[0017] The following will describe the detailed embodiments of the present utility model in detail. To avoid too many unnecessary details, the well-known structures or functions will not be described in detail in the following embodiments. The approximate language used in the following embodiments can be used for quantitative expressions, indicating that a certain change in quantity is allowed without changing the basic function. Unless otherwise defined, the technical and scientific terms used in the following embodiments have the same meanings as commonly understood by those skilled in the art to which the present utility model belongs.

[0018] Embodiment 1

[0019] A spring plunger type engine oil pressure regulating valve for an engine, as Figure 2As shown, it includes a valve body 1, a flow channel 2, a columnar section 3, a columnar pin 4, an annular groove 5, a retaining ring 6, an annular platform 7, and a spring 8, wherein the valve body 1 has a flow channel 2, the flow channel 2 has a columnar section 3, the columnar pin 4 and the columnar section 3 are slidably matched, an annular groove 5 is provided on the outer wall of the columnar pin 4, a retaining ring 6 is fixedly connected to the annular groove 5, and an annular platform 7 is provided at the end of the columnar section 3. The valve body 1 is connected to the columnar pin 4 or the retaining ring 6 through the spring 8. When the spring 8 is released, the retaining ring 6 presses against the annular platform 7.

[0020] Among them, the valve body 1 is the main structure of the pressure regulating valve, and the flow channel 2 inside it is the channel for the oil to flow when the oil is depressurized. In this channel, a columnar section 3 is provided, which is plugged and matched with the columnar pin 4. Based on the matching structure of the two, the columnar pin 4 can obtain the guiding effect of the columnar section during the movement, ensuring that the columnar pin 4 and the spring 8 only move along the axial direction, thereby ensuring the stability of the stroke. Moreover, during the pressure relief process, the area of the side of the columnar pin 4 facing the oil direction remains unchanged. This uniformity of the force-bearing area makes the spring 8 evenly stressed, which not only ensures the stability of the oil pressure, but also is not prone to failure. The matching surface between the columnar pin 4 and the columnar section 3 is a sealing surface, which is used to close the flow channel. The annular groove 5 on the columnar pin 4 is used to set the retaining ring 6, and the retaining ring 6 cooperates with the annular platform 7 in the valve body 1 to play a limiting role.

[0021] Example 2

[0022] A spring plunger type oil pressure regulating valve for an engine, such as Figure 2 As shown, it includes a valve body 1, a flow channel 2, a columnar section 3, a columnar pin 4, an annular groove 5, a retaining ring 6, an annular platform 7, and a spring 8, wherein the valve body 1 has a flow channel 2, the flow channel 2 has a columnar section 3, the columnar pin 4 and the columnar section 3 are slidably matched, an annular groove 5 is provided on the outer wall of the columnar pin 4, a retaining ring 6 is fixedly connected to the annular groove 5, and an annular platform 7 is provided at the end of the columnar section 3. The valve body 1 is connected to the columnar pin 4 or the retaining ring 6 through the spring 8. When the spring 8 is released, the retaining ring 6 presses against the annular platform 7. The contact surface between the retaining ring 6 and the annular platform 7 is a plane, and the plane is perpendicular to the axis of the columnar pin 4. The columnar pin 4 and the columnar section 3 are both cylindrical. The axis of the columnar pin 4 coincides with the axis of the spring 8. A reducing section is provided at the end of the columnar pin 4, and the end diameter of the reducing section is smaller than the root diameter thereof. Among them, the cylindrical pin 4 can also be called a grooved cylindrical pin; the retaining ring 6 can also be called an open retaining ring; and the spring 8 can also be called a pressure relief valve spring.

[0023] The embodiments of the present invention are described in detail above, but the contents are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the scope of application of the present invention shall be included in the protection scope of the present invention.

Claims

1. A spring plunger type oil pressure regulating valve for an engine, characterized in that It includes a valve body (1), a flow channel (2), a columnar section (3), a columnar pin (4), an annular groove (5), a retaining ring (6), an annular platform (7), and a spring (8). Among them, there is a flow channel (2) in the valve body (1), a columnar section (3) is provided on the flow channel (2), the columnar pin (4) is slidably fitted with the columnar section (3), an annular groove (5) is provided on the outer wall of the columnar pin (4), a retaining ring (6) is fixedly connected to the annular groove (5), an annular platform (7) is provided at the end of the columnar section (3), the valve body (1) is connected to the columnar pin (4) or the retaining ring (6) through the spring (8), and when the spring (8) is released, the retaining ring (6) presses against the annular platform (7).

2. The spring plunger type engine oil pressure regulating valve according to claim 1, characterized in that, The contact surface between the retaining ring (6) and the annular platform (7) is a plane, and this plane is perpendicular to the axis of the columnar pin (4).

3. The spring plunger type engine oil pressure regulating valve according to claim 1, characterized in that, Both the columnar pin (4) and the columnar section (3) are in the shape of a cylinder.

4. The spring plunger type engine oil pressure regulating valve according to claim 1, characterized in that, The axis of the columnar pin (4) coincides with the axis of the spring (8).

5. The spring plunger type engine oil pressure regulating valve according to claim 1, characterized in that, A reduced-diameter section is provided at the end of the columnar pin (4), and the diameter of the end of the reduced-diameter section is smaller than the diameter of its root.

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