Self-acting pressure automatic control valve

Abstract

The utility model discloses a self -force formula pressure automatic control valve, include: valve body, the both sides of valve body are provided with liquid inlet channel and liquid outlet channel, the vertical setting of valve body top is provided with piston cylinder, liquid inlet channel is below the upper and lower misregistration of liquid outlet channel setting, and is communicated through piston cylinder hole channel, the piston cylinder hole channel top end inner wall fixedly connected with adjusting plug, the piston cylinder hole channel bottom end inner wall is equipped with ball seat, the piston of sliding installation has in ball seat top, be provided with pressure spring between piston and adjusting plug. The utility model discloses through the balance of medium self -force and spring force realizes automatic opening and closing, has simple structure, and the advantages such as convenient adjustment, good sealing.

Description

Technical Field

[0001] This utility model relates to the field of fluid control equipment technology, and in particular to a self-operated automatic pressure control valve. Background Technology

[0002] In fluid transport and control systems, it is often necessary to automatically control the opening and closing of valves based on changes in medium pressure to achieve fluid diversion or pressure control. Currently, most existing pressure control valves are driven by external power sources such as electric or pneumatic motors. These valves have complex structures and require corresponding power units, control systems, and sensors. This not only increases the cost and size of the equipment but also significantly limits their reliability and applicability in situations where external power is lacking or in harsh environments.

[0003] Furthermore, some self-operated pressure control valves suffer from insufficient response, poor sealing performance, and poor structural stability, making it difficult to meet the requirements of high-precision and high-reliability control. Therefore, developing a self-operated automatic pressure control valve with a simple structure, no external power required, sensitive response, and good sealing performance is of significant practical importance. Utility Model Content

[0004] The purpose of this utility model is to provide a self-operated automatic pressure control valve that achieves automatic opening and closing by balancing the pressure of the medium itself and the spring force. It has the advantages of simple structure, convenient adjustment and good sealing performance.

[0005] To achieve the purpose of this utility model, this utility model provides a self-operated automatic pressure control valve, comprising: a valve body, an inlet channel and an outlet channel respectively provided on both sides of the valve body, a piston cylinder vertically provided at the top of the valve body, the inlet channel being lower than the outlet channel and offset vertically, and communicating through the piston cylinder channel, an adjusting plug fixedly connected to the inner wall of the top of the piston cylinder channel, a ball seat provided on the inner wall of the bottom of the piston cylinder channel, a piston slidably mounted above the ball seat, and a pressure spring provided between the piston and the adjusting plug.

[0006] As a preferred embodiment of this invention, a flange end face is provided on the outer side of the liquid inlet channel.

[0007] As a preferred embodiment of this utility model, a flange end face is provided on the outer side of the liquid outlet channel.

[0008] As a preferred embodiment of this utility model, the flange end face edge is provided with mounting bolt holes.

[0009] As a preferred embodiment of this utility model, the adjusting plug is threadedly connected to the inner wall of the piston cylinder, and the top of the adjusting plug extends out of the piston cylinder.

[0010] As a preferred embodiment of this utility model, the bottom end of the piston is provided with a spherical end face, and the spherical end face is fitted onto the ball seat.

[0011] As a preferred embodiment of this invention, the liquid inlet channel is connected to the bottom end of the piston cylinder.

[0012] As a preferred embodiment of this utility model, the liquid outlet channel is connected to the side end of the piston cylinder, and the liquid outlet channel is set at a height higher than the ball seat.

[0013] As a preferred embodiment of this utility model, the ball seat and the valve body are integrally formed.

[0014] As a preferred embodiment of this utility model, the inlet channel and the outlet channel are integrally formed with the valve body.

[0015] Compared with the prior art, this utility model provides a self-operated automatic pressure control valve, which has the following advantages: When this invention is in operation, as the medium flows into the valve through the inlet channel, the incoming liquid pressure acts on the spherical end face of the piston, generating an upward force on the piston. If the incoming liquid pressure is greater than the pressure set by the pressure spring above the piston, the piston overcomes the spring force and moves upward, leaving the ball seat, opening the valve and allowing the medium to enter the outlet channel through the ball seat. When the incoming liquid pressure decreases and becomes less than the spring pressure, the piston moves downward under the action of the spring force, and its lower spherical end face re-seated on the ball seat, closing the valve and cutting off the flow of medium. This achieves the function of automatically opening and closing the valve according to the medium pressure. The seal is achieved through the cooperation between the spherical end face of the piston and the ball seat. Under the action of the spring force, the sealing effect is reliable and can effectively prevent medium leakage. The preload of the pressure spring can be adjusted by rotating the adjusting plug, thereby setting the opening and closing pressure, and thus setting the valve opening and closing pressure values ​​according to actual needs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] 1 is the valve body, 2 is the inlet channel, 3 is the outlet channel, 4 is the piston cylinder, 5 is the adjusting plug, 6 is the ball seat, 7 is the piston, 8 is the pressure spring, 9 is the flange end face, and 10 is the mounting bolt hole. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1 This utility model provides a self-operated automatic pressure control valve, comprising: a valve body 1, an inlet channel 2 and an outlet channel 3 respectively provided on both sides of the valve body 1, a piston cylinder 4 vertically provided at the top of the valve body 1, the inlet channel 2 being lower than the outlet channel 3 and offset vertically, and communicating through the hole of the piston cylinder 4, an adjusting plug 5 being fixedly connected to the inner wall of the top of the hole of the piston cylinder 4, a ball seat 6 being provided on the inner wall of the bottom end of the hole of the piston cylinder 4, a piston 7 being slidably installed above the ball seat 6, and a pressure spring 8 being provided between the piston 7 and the adjusting plug 5.

[0020] In one embodiment of this utility model, a flange end face 9 is provided on the outer side of the liquid inlet channel 2.

[0021] In one embodiment of this utility model, a flange end face 9 is provided on the outer side of the liquid outlet channel 3.

[0022] In one embodiment of this utility model, the flange end face 9 is provided with mounting bolt holes 10.

[0023] In one embodiment of this utility model, the adjusting plug 5 is threadedly connected to the inner wall of the piston cylinder 4, and the top end of the adjusting plug 5 extends out of the piston cylinder 4.

[0024] In one embodiment of the present invention, the piston 7 has a spherical end face at its bottom end, and the spherical end face is fitted onto the ball seat 6.

[0025] In one embodiment of this utility model, the liquid inlet channel 2 is connected to the bottom end of the piston cylinder 4.

[0026] In one embodiment of this utility model, the liquid outlet channel 3 is connected to the side end of the piston cylinder 4, and the liquid outlet channel 3 is set at a height higher than the ball seat 6.

[0027] In one embodiment of this utility model, the ball seat 6 is integrally formed with the valve body 1.

[0028] In one embodiment of this utility model, the liquid inlet channel 2 and the liquid outlet channel 3 are integrally formed with the valve body 1.

[0029] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A self-operated automatic pressure control valve, characterized in that, include: A valve body (1) is provided with an inlet channel (2) and an outlet channel (3) on both sides. A piston cylinder (4) is vertically provided at the top of the valve body (1). The inlet channel (2) is lower than the outlet channel (3) and is staggered vertically. It is connected through the hole of the piston cylinder (4). An adjusting plug (5) is connected to the inner wall of the top of the hole of the piston cylinder (4). A ball seat (6) is provided on the inner wall of the bottom of the hole of the piston cylinder (4). A piston (7) is slidably installed above the ball seat (6). A pressure spring (8) is provided between the piston (7) and the adjusting plug (5).

2. The self-operated automatic pressure control valve according to claim 1, characterized in that: A flange end face (9) is provided on the outside of the liquid inlet channel (2).

3. The self-operated automatic pressure control valve according to claim 2, characterized in that: A flange end face (9) is provided on the outside of the liquid outlet channel (3).

4. The self-operated automatic pressure control valve according to claim 3, characterized in that: The flange end face (9) is provided with mounting bolt holes (10) at the edge.

5. A self-operated automatic pressure control valve according to claim 1, characterized in that: The adjusting plug (5) is threaded to the inner wall of the piston cylinder (4), and the top of the adjusting plug (5) extends out of the piston cylinder (4).

6. A self-operated automatic pressure control valve according to claim 1, characterized in that: The piston (7) has a spherical end face at its bottom end, and the spherical end face is fitted to the ball seat (6).

7. A self-operated automatic pressure control valve according to claim 1, characterized in that: The liquid inlet channel (2) is connected to the bottom end of the piston cylinder (4).

8. A self-operated automatic pressure control valve according to claim 1, characterized in that: The liquid outlet channel (3) is connected to the side end of the piston cylinder (4), and the liquid outlet channel (3) is set at a height higher than the ball seat (6).

9. A self-operated automatic pressure control valve according to claim 1, characterized in that: The ball seat (6) is integrally formed with the valve body (1).

10. A self-operated automatic pressure control valve according to claim 1, characterized in that: The inlet channel (2) and outlet channel (3) are integrally formed with the valve body (1).

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