CN110617342A - Pressure regulating valve capable of reducing pressure fluctuation - Google Patents

Abstract

The invention provides a pressure regulating valve capable of reducing pressure fluctuations, which includes a valve sleeve, a plunger, a spring, and a plug. The valve sleeve is provided with a valve hole and an oil inlet and an oil outlet connected to the valve hole. The plunger includes a rod-shaped part, and a disc part and a cylindrical part respectively connected to the left and right ends of the rod-shaped part. The cylindrical part is used for installing a spring, and a transfer chamber is formed between the disc part and the cylindrical part. , the other side of the disc part is provided with a raised part concentric with the rod-shaped part, the disc part and the bottom end of the plug or valve hole form a feedback chamber, and the disc part is provided with axial damping The damping hole is used to connect the transfer chamber and the feedback chamber. The setting of the orifice can prevent the rapid movement of the plunger from generating additional pressure fluctuations.

Description

A pressure regulating valve capable of reducing pressure fluctuations

technical field

The invention relates to an engine lubricating system, in particular to a pressure regulating valve.

Background technique

The existing pressure regulating valve is directly affected by the pressure when it is opened and closed, and it will switch quickly, resulting in large fluctuations in pressure, affecting the unstable oil supply of the oil pump, and easily impacting the subsequent oil circuit parts of the engine, causing lubrication bad.

Contents of the invention

The technical problem to be solved by the present invention is to provide a pressure regulating valve capable of reducing pressure fluctuations.

In order to solve the above technical problems, the technical solution of the present invention is: a pressure regulating valve capable of reducing pressure fluctuations, including a valve sleeve, a plunger, a spring, and a plug. The valve sleeve is provided with a valve hole and a An oil inlet and an oil outlet, the plunger includes a rod-shaped part, and a disc part and a cylindrical part respectively connected to the left and right ends of the rod-shaped part, the cylindrical part is used for installing a spring, and the disc part A transition chamber is formed between the cylindrical part and the other side of the disc part is provided with a convex part concentric with the rod-shaped part. The disc part and the bottom end of the plug or valve hole form a feedback cavity. The disk portion is provided with an axial damping hole, which is used to communicate with the transfer chamber and the feedback chamber.

The working principle of the above pressure regulating valve is: when it is opened, the pressure oil reaches the bottom of the valve hole through the damping hole, and generates a reaction thrust to make the plunger open slowly; after opening, when the plunger retreats under the force of the spring, because There is pressure oil at the bottom of the valve hole, and it needs to be slowly discharged through the damping hole to move along with the oil at the bottom. The setting of the damping hole can prevent the rapid movement of the plunger from causing additional pressure fluctuations.

As a preferred technical solution, the number of the damping holes is two or four, and these damping holes are arranged symmetrically on the disc portion along the same circumferential line.

Further, an annular groove is respectively provided on the inner wall of the valve hole corresponding to the positions of the oil inlet and the oil outlet. This structure can prevent the plunger from being biased to one side under the action of oil pressure.

Description of drawings

Fig. 1 is a structural schematic diagram of a pressure regulating valve in an embodiment of the present invention;

The reference signs are:

1——valve sleeve 2——plunger 2a——rod

2b——disc portion 2c——cylindrical portion 2d——raised portion

3——spring 4——screw plug 5——oil inlet

6—Oil outlet 7—Transfer chamber 8—Feedback cavity

9——damping hole.

Detailed ways

In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the embodiments and accompanying drawings, and the contents mentioned in the embodiments are not intended to limit the present invention.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", etc. or The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as limiting the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined. In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be two The internal communication of each element may be directly connected or indirectly connected through an intermediary, and those skilled in the art can understand the specific meaning of the terms according to specific situations.

As shown in Figure 1, a pressure regulating valve that can reduce pressure fluctuations includes a valve sleeve 1, a plunger 2, a spring 3, and a plug 4. The valve sleeve 1 is provided with a valve hole and an oil inlet connected to the valve hole. Port 5 and oil outlet 6, the plunger 2 includes a rod-shaped portion 2a, and a disc portion 2b and a cylindrical portion 2c respectively connected to the left and right ends of the rod-shaped portion 2a, the cylindrical portion 2c is used for installing the spring 3, A transition chamber 7 is formed between the disc part 2b and the cylindrical part 2c. The other side of the disc part 2b is provided with a raised part 2d concentric with the rod-shaped part 2a. The disc part 2b is connected to the plug 4 or the bottom of the valve hole. A feedback chamber 8 is formed at the end, and an axial damping hole 9 is provided on the disc part 2b, and the damping hole 9 is used to communicate with the transfer chamber 7 and the feedback chamber 8.

As a preferred solution, the number of damping holes 9 is two or four, and these damping holes 9 are symmetrically arranged on the disc portion 2b along the same circumferential line. An annular groove 10 is respectively provided on the inner wall of the valve hole corresponding to the oil inlet 5 and the oil outlet 6, so as to prevent the plunger 2 from being biased to one side under the action of oil pressure.

The working principle of the above-mentioned pressure regulating valve is: when the pressure oil is opened, the pressure oil reaches the bottom of the valve hole through the damping hole 9, and generates a reaction thrust to make the plunger 2 open slowly; after opening, the plunger 2 returns under the force of the spring 3. When retreating, because there is pressure oil at the bottom of the valve hole, it needs to be slowly discharged through the damping hole 9 to move along with the bottom oil. The setting of the damping hole 9 can prevent the plunger 2 from rapidly moving to generate additional pressure fluctuations.

In order to make it easier for those skilled in the art to understand the improvement of the present invention compared to the prior art, some drawings and descriptions of the present invention have been simplified, and for the sake of clarity, some other elements have been omitted in this application document, Those of ordinary skill in the art should realize that these omitted elements may also constitute the content of the present invention.

Claims (3)

1. The utility model provides a can reduce pressure regulating valve of pressure fluctuation, includes valve barrel (1), plunger (2), spring (3), blocks up (4), be equipped with the valve opening on valve barrel (1) and with communicating oil inlet (5) of valve opening and oil-out (6), plunger (2) include shaft-like portion (2 a) to and connect disk portion (2 b) and drum portion (2 c) at both ends about shaft-like portion (2 a) respectively, drum portion (2 c) are used for installing spring (3), form transfer chamber (7) between disk portion (2 b) and drum portion (2 c), the opposite side of disk portion (2 b) is equipped with bellying (2 d) concentric with shaft-like portion (2 a), disk portion (2 b) and the bottom of blockking up (4) or valve opening form feedback chamber (8), its characterized in that: the disc part (2 b) is provided with an axial damping hole (9), and the damping hole (9) is used for communicating the transfer chamber (7) with the feedback cavity (8).

2. The pressure regulating valve capable of reducing pressure fluctuations of claim 1, wherein: the number of the damping holes (9) is two or four, and the damping holes (9) are symmetrically arranged on the disc part (2 b) along the same circumferential line.

3. The pressure regulating valve capable of reducing pressure fluctuations of claim 1, wherein: and the positions, corresponding to the oil inlet (5) and the oil outlet (6), on the inner wall of the valve hole are respectively provided with an annular groove (10).