Flange type pneumatic two-position three-way coaxial valve suitable for pilot valve control

Abstract

This utility model discloses a flange-type pneumatically controlled two-position three-way coaxial valve suitable for pilot valve control, including a valve body. The top of the valve body has an inlet port, and both ends of the valve body have a pair of outlet ports symmetrically arranged, communicating with the inlet port. The inlet port and the pair of outlet ports are T-shaped. Inside the valve body, there is a cylinder liner seat aligned with the pair of outlet ports. Between the cylinder liner seat and the pair of outlet ports, there is a movable valve assembly for controlling the opening or closing of the outlet ports. The valve body has an air inlet assembly for pneumatically controlling the movable valve assembly. This utility model designs a three-way coaxial valve that can be pneumatically controlled by a pilot valve in conjunction with a pair of air inlets A and a pair of air inlets B. It can quickly and accurately control the opening and closing of both outlet ports of the three-way coaxial valve simultaneously, or pneumatically control the opening and closing of any one outlet port. This makes it more flexible and convenient to use, and more precise and efficient in control.

Description

Technical Field

[0001] This utility model belongs to the technical field of three-way coaxial valves, specifically relating to a flange-type pneumatic two-position three-way coaxial valve suitable for pilot valve control. Background Technology

[0002] Three-way valves serve as the central connection for various pipelines and have a wide range of applications. Unlike ordinary valves, conventional three-way valves have an outlet at the bottom. The outlet varies depending on the position of the internal valve core. For example, when the valve core is at the bottom, the left and right outlets are connected; when the valve core is at the top, the right outlet is blocked, while the left and bottom outlets are connected.

[0003] The conventional three-way valve cannot achieve flexible opening and closing of multiple outlets through pneumatic control by the valve core control inside. Therefore, this utility model designs a flange-type pneumatic two-position three-way coaxial valve suitable for pilot valve control. Utility Model Content

[0004] The purpose of this invention is to provide a flange-type pneumatic two-position three-way coaxial valve suitable for pilot valve control, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a flange-type pneumatically controlled two-position three-way coaxial valve suitable for pilot valve control, comprising a valve body, an inlet port provided at the top of the valve body, a pair of outlet ports symmetrically provided at both ends of the valve body communicating with the inlet port, and the inlet port and the pair of outlet ports being distributed in a T-shape, a cylinder liner seat provided inside the valve body aligned with the pair of outlet ports, a movable valve assembly for controlling the closure or connection of the outlet ports provided between the cylinder liner seat and the pair of outlet ports, and an air inlet assembly for pneumatically controlling the movable valve assembly provided on the valve body.

[0006] Preferably, the movable valve assembly includes a pair of guide posts fixedly disposed inside a pair of outlet ports; one end of each guide post is fixedly embedded inside the outlet port, and the surface of the guide post is provided with a valve port that communicates with both the outlet port and the inlet port. The movable valve assembly also includes a pair of movable valve seats movably disposed in the cylinder liner seat and used to open or close the valve ports. The other end of each guide post extends into the corresponding movable valve seat and is connected in a piston-like sliding manner. Each movable valve seat is provided with a communication port.

[0007] Preferably, the inflation port assembly includes a pair of inflation ports A and a pair of inflation ports B disposed on the valve body. The pair of inflation ports A are only connected to the cavity between the pair of movable valve seats, and the pair of inflation ports B are only connected to the corresponding movable valve seats through the communication port.

[0008] Preferably, a sealing ring A is embedded in the inner surface of the cylinder liner seat to keep the air inlet A connected only to the cavity between a pair of movable valve seats, and a sealing ring B is embedded in both ends of the cylinder liner seat to keep the corresponding air inlet B connected only to the interior of the corresponding movable valve seat.

[0009] Preferably, the end of the guide post is provided with a sealing rubber ring for sealing the gap between the movable valve seat and the guide post.

[0010] Preferably, each of the guide posts is provided with a sealing auxiliary ring for cooperating with the movable valve seat to close the valve port.

[0011] Preferably, the movable valve assembly further includes an outer spring disposed between a pair of movable valve seats.

[0012] Preferably, the movable valve assembly further includes an inner spring disposed in each movable valve seat, one end of the inner spring abutting against the movable valve seat, and the other end of the inner spring abutting against the guide post.

[0013] Preferably, the valve body is assembled from a main valve body and a pair of flanged splicing valve bodies by splicing flanges.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention designs a three-way coaxial valve that can be pneumatically controlled by a pilot valve in conjunction with a pair of air inlets A and a pair of air inlets B. It can quickly and accurately control the liquid outlets at both ends of the three-way coaxial valve to open and close simultaneously, or to open and close any one of the liquid outlets at both ends by pneumatic control, making it more flexible and convenient to use, and more precise and efficient to control. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a bottom view of the structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the exploded structure of this utility model;

[0019] Figure 4 This is a cross-sectional structural diagram of the present invention;

[0020] Figure 5 This is a cross-sectional structural diagram of Example 2;

[0021] Figure 6 This is a cross-sectional structural diagram of Example 3;

[0022] In the diagram: 1. Valve body; 1-1. Main valve body; 1-2. Flange-connected valve body; 2. Liquid inlet; 3. Liquid outlet; 4. Cylinder liner seat; 5. Movable valve seat; 6. Guide post; 7. Valve port; 8. Sealing auxiliary ring; 9. Air inlet A; 10. Air inlet B; 11. Connecting port; 12. Inner spring; 13. Outer spring. Detailed Implementation

[0023] 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.

[0024] Example 1

[0025] Please see Figures 1 to 4 This utility model provides a technical solution: a flange-type pneumatically controlled two-position three-way coaxial valve suitable for pilot valve control, including a valve body 1, an inlet 2 provided on the top of the valve body 1, a pair of outlets 3 symmetrically provided at both ends of the valve body 1 communicating with the inlet 2, and the inlet 2 and the pair of outlets 3 are distributed in a T-shape, a cylinder liner seat 4 aligned with the pair of outlets 3 is provided inside the valve body 1, an active valve assembly for controlling the closure or connection of the outlets 3 is provided between the cylinder liner seat 4 and the pair of outlets 3, and an air inlet assembly for pneumatically controlling the active valve assembly is provided on the valve body 1.

[0026] In this embodiment, preferably, the movable valve assembly includes a pair of guide posts 6 fixedly disposed inside a pair of outlet ports 3; one end of the guide post 6 is fixedly embedded inside the outlet port 3, and the surface of the guide post 6 is provided with a valve port 7 that communicates with both the outlet port 3 and the inlet port 2. The movable valve assembly also includes a pair of movable valve seats 5 movably disposed in the cylinder liner seat 4 and used to open or close the valve port 7. The other end of the guide post 6 extends into the corresponding movable valve seat 5 and is connected in a piston-like sliding manner. Each movable valve seat 5 is provided with a communication port 11.

[0027] In this embodiment, preferably, the inflation port assembly includes a pair of inflation ports A9 and a pair of inflation ports B10 disposed on the valve body 1. The pair of inflation ports A9 communicate only with the cavity between the pair of movable valve seats 5, and the pair of inflation ports B10 communicate only with the corresponding movable valve seat 5 through the communication port 11. In this embodiment, preferably, a sealing ring A is embedded in the inner surface of the cylinder liner seat 4 to ensure that the inflation port A9 communicates only with the cavity between the pair of movable valve seats 5, and a sealing ring B is embedded in both ends of the cylinder liner seat 4 to ensure that the corresponding inflation port B10 communicates only with the interior of the corresponding movable valve seat 5, so as to ensure that gas enters the corresponding space through the corresponding inflation port and avoid gas leakage.

[0028] In this embodiment, preferably, the end of the guide post 6 is provided with a sealing rubber ring for sealing the gap between the movable valve seat 5 and the guide post 6, so as to prevent the liquid entering the movable valve seat 5 from being sprayed out from the gap between the movable valve seat 5 and the guide post 6, and also to ensure that the liquid in the external flow channel will not enter the movable valve seat 5.

[0029] In this embodiment, preferably, each guide post 6 is provided with a sealing auxiliary ring 8 for cooperating with the movable valve seat 5 to close the valve port 7. In order to ensure that the movable valve seat 5 can move to fit with the sealing auxiliary ring 8, and to ensure good sealing performance of the valve port 7.

[0030] In this embodiment, preferably, the valve body 1 is assembled from the main valve body 1-1 and a pair of flanged splicing valve bodies 1-2 by splicing flanges to achieve an assembled structure.

[0031] After the pilot valve is installed on the valve body 1, gas is introduced through the air inlet A9 by controlling the pilot valve. The gas enters between a pair of movable valve seats 5, and the increased air pressure causes the pair of movable valve seats 5 to move to both ends, thereby closing the valve ports 7 at both ends. When only one air inlet B10 is filled, the air pressure in the movable valve seat 5 connected to that air inlet B10 increases, forcing the movable valve seat 5 to move into the cylinder liner seat 4, thereby opening the valve port 7 at the corresponding end, so that the liquid inlet 2 is connected to the liquid outlet 3 at the corresponding end, and the valve port 7 at the other end is in a closed state. When gas is injected into both air inlets B10 at the same time, the air pressure in both movable valve seats 5 increases, forcing both movable valve seats 5 to move into the cylinder liner seat 4, thereby opening the valve ports 7 at both ends.

[0032] Example 2

[0033] Please see Figure 5 Based on Embodiment 1 above, the movable valve assembly further includes an outer spring 13 disposed between a pair of movable valve seats 5.

[0034] Example 3

[0035] Please see Figure 6 Based on Embodiment 1 above, the movable valve assembly further includes an inner spring 12 disposed in each movable valve seat 5. One end of the inner spring 12 abuts against the movable valve seat 5, and the other end of the inner spring 12 abuts against the guide post 6.

[0036] Although embodiments of the present invention have been shown and described in detail above, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flange-type pneumatically controlled two-position three-way coaxial valve suitable for pilot valve control, comprising a valve body (1), characterized in that: The valve body (1) is provided with an inlet (2) at the top. A pair of outlets (3) communicating with the inlet (2) are symmetrically provided at both ends of the valve body (1). The inlet (2) and the pair of outlets (3) are distributed in a T-shape. A cylinder liner seat (4) aligned with the pair of outlets (3) is provided inside the valve body (1). An active valve assembly for controlling the opening or closing of the outlets (3) is provided between the cylinder liner seat (4) and the pair of outlets (3). An air inlet assembly for pneumatically controlling the active valve assembly is provided on the valve body (1).

2. A flange-type pneumatically controlled two-position three-way coaxial valve suitable for pilot valve control according to claim 1, characterized in that: The movable valve assembly includes a pair of guide posts (6) fixedly disposed inside a pair of outlet ports (3); one end of the guide post (6) is fixedly embedded inside the outlet port (3), and the surface of the guide post (6) is provided with a valve port (7) that communicates with both the outlet port (3) and the inlet port (2). The movable valve assembly also includes a pair of movable valve seats (5) movably disposed in the cylinder liner seat (4) and used to open or close the valve port (7). The other end of the guide post (6) extends into the corresponding movable valve seat (5) and is connected in a piston-like sliding manner. Each movable valve seat (5) is provided with a communication port (11).

3. A flange-type pneumatically controlled two-position three-way coaxial valve suitable for pilot valve control according to claim 2, characterized in that: The inflation port assembly includes a pair of inflation ports A (9) and a pair of inflation ports B (10) disposed on the valve body (1). The pair of inflation ports A (9) are only connected to the cavity between the pair of movable valve seats (5), and the pair of inflation ports B (10) are only connected to the corresponding movable valve seats (5) through the communication port (11).

4. A flange-type pneumatically controlled two-position three-way coaxial valve suitable for pilot valve control according to claim 3, characterized in that: The inner surface of the cylinder liner seat (4) is fitted with a sealing ring A to keep the air inlet A (9) connected only to the cavity between a pair of movable valve seats (5). The two ends of the cylinder liner seat (4) are fitted with a sealing ring B to keep the corresponding air inlet B (10) connected only to the interior of the corresponding movable valve seat (5).

5. A flange-type pneumatically controlled two-position three-way coaxial valve suitable for pilot valve control according to claim 4, characterized in that: The end of the guide post (6) is provided with a sealing rubber ring for sealing the gap between the movable valve seat (5) and the guide post (6).

6. A flange-type pneumatically controlled two-position three-way coaxial valve suitable for pilot valve control according to claim 5, characterized in that: Each of the guide posts (6) is provided with a sealing auxiliary ring (8) for cooperating with the movable valve seat (5) to close the valve port (7).

7. A flange-type pneumatically controlled two-position three-way coaxial valve suitable for pilot valve control according to claim 2, characterized in that: The movable valve assembly also includes an outer spring (13) disposed between a pair of movable valve seats (5).

8. A flange-type pneumatically controlled two-position three-way coaxial valve suitable for pilot valve control according to claim 2, characterized in that: The movable valve assembly also includes an inner spring (12) disposed in each movable valve seat (5), one end of the inner spring (12) abutting against the movable valve seat (5), and the other end of the inner spring (12) abutting against the guide post (6).

9. A flange-type pneumatically controlled two-position three-way coaxial valve suitable for pilot valve control according to claim 1, characterized in that: The valve body (1) is assembled from the main valve body (1-1) and a pair of flanged valve bodies (1-2) by splicing them together with flanges.

Images