An outflow channel high-pressure pneumatic control tee joint coaxial valve

Abstract

This utility model discloses a high-pressure pneumatically controlled three-way coaxial valve with an external flow channel, including a main valve body shell. The main valve body shell has an inlet port. A pair of symmetrically distributed flange valve body shells are connected to both ends of the main valve body shell via flanges. Each pair of flange valve body shells has a pair of outlet ports communicating with the inlet port. An outlet sealing sleeve is embedded and fixedly installed in each outlet port. A cylinder liner seat coaxial with the pair of outlet ports is installed inside the main valve body shell. A pneumatic piston sealing assembly is installed inside the cylinder liner seat to close any one of the outlet ports by horizontal left-right movement. The designed pneumatically controlled three-way coaxial valve can switch between inflation via a pair of inflation holes, thereby changing the pressure difference on both sides of the piston disc, thus realizing the horizontal left-right movement of the movable guide rod. This drives the valve seats at both ends of the movable guide rod to move horizontally left-right, completing the closure of any one of the outlet ports on the left or right. The entire valve body achieves pneumatically automated operation, which is faster and more precise.

Description

Technical Field

[0001] This utility model belongs to the technical field of three-way coaxial valves, specifically relating to a high-pressure pneumatically controlled three-way coaxial valve with an external flow channel. 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] Existing three-way valves cannot achieve pneumatic control and cannot automatically, quickly, and accurately close and open each outlet. Therefore, this utility model designs an external flow channel high-pressure pneumatically controlled three-way coaxial valve. Utility Model Content

[0004] The purpose of this invention is to provide a high-pressure pneumatically controlled three-way coaxial valve for external flow channels to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-pressure pneumatically controlled three-way coaxial valve for external flow channels, comprising a main valve body shell, an inlet port on the main valve body shell, a pair of symmetrically distributed flange valve body shells connected to both ends of the main valve body shell via flanges, and a pair of outlet ports communicating with the inlet port on the pair of flange valve body shells, an outlet sealing sleeve embedded and fixedly installed in each outlet port, a cylinder liner seat coaxial with the pair of outlet ports inside the main valve body shell, and a pneumatic piston sealing assembly for closing any one of the outlet ports by horizontal left and right movement inside the cylinder liner seat.

[0006] Preferably, the pneumatic piston sealing assembly includes an air chamber formed in the middle of the cylinder liner seat, a movable guide rod that moves horizontally within the cylinder liner seat via a linear bearing, and a pair of valve seats located at both ends of the inner side of the cylinder liner seat for sealing the liquid outlet. A piston disc is fixedly mounted on the movable guide rod within the air chamber. A pair of air inlets are provided at both ends of the air chamber, which can be used to push the piston disc to move horizontally left and right by air. The air chamber communicates only with the pair of air inlets. The bottom ends of the pair of air inlets communicate with the outside. Both ends of the movable guide rod extend horizontally and are fixedly connected to the valve seats at both ends.

[0007] Preferably, the piston disc is provided with a sealing ring on its edge for sealing, and the piston disc is located between a pair of air inlets.

[0008] Preferably, a rubber sealing sleeve is provided at the sliding connection between the inner side of the cylinder liner seat and the movable guide rod, and double-layer sealing rubber rings for sealing the gap between the valve seat and the cylinder liner seat are provided at both ends of the inner side of the cylinder liner seat.

[0009] Preferably, each of the liquid outlets is embedded with a fixed outlet sealing sleeve, the size of which matches the end size of the valve seat.

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

[0011] The pneumatically controlled three-way coaxial valve designed in this utility model can switch the inflation through a pair of inflation holes, thereby changing the pressure difference on both sides of the piston disc, thus realizing the horizontal left and right movement of the movable guide rod, which in turn drives the valve seats at both ends of the movable guide rod to move horizontally left and right, completing the closure of either of the liquid outlets at the left or right ends. The entire valve body realizes pneumatic automatic operation, which is faster and more precise. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0013] Figure 2 This is a bottom view of the structure of this utility model;

[0014] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0015] Figure 4 This is a schematic diagram of the exploded structure of this utility model;

[0016] In the diagram: 1. Main valve body; 2. Flange valve body; 3. Liquid outlet; 4. Liquid inlet; 5. Air inlet; 6. Cylinder liner seat; 7. Piston disc; 8. Outlet sealing sleeve; 9. Valve seat; 10. Movable guide rod; 11. Air chamber; 12. Linear bearing; 13. Sealing ring. Detailed Implementation

[0017] 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.

[0018] Please see Figures 1 to 4This utility model provides a technical solution: an external flow channel high-pressure pneumatic control three-way coaxial valve, including a main valve body shell 1, an inlet 4 on the main valve body shell 1, a pair of symmetrically distributed flange valve body shells 2 connected to both ends of the main valve body shell 1 by flanges, and a pair of outlet ports 3 communicating with the inlet 4 on the pair of flange valve body shells 2, an outlet sealing sleeve 8 is embedded and fixedly installed in each outlet port 3, a cylinder liner seat 6 coaxial with the pair of outlet ports 3 is provided inside the main valve body shell 1, and a pneumatic piston sealing assembly is provided inside the cylinder liner seat 6 to close any one of the outlet ports 3 by horizontal left and right movement.

[0019] In this embodiment, preferably, the pneumatic piston sealing assembly includes an air chamber 11 formed in the middle of the cylinder liner seat 6, a movable guide rod 10 that moves horizontally within the cylinder liner seat 6 via a linear bearing 12, and a pair of valve seats 9 located at both ends of the inner side of the cylinder liner seat 6 for sealing the liquid outlet 3. A piston disc 7 is fixedly mounted on the movable guide rod 10 within the air chamber 11. A pair of air inlets 5 are provided at both ends of the air chamber 11, allowing the piston disc 7 to move horizontally left and right by inflation. The air chamber 11 communicates only with the pair of air inlets 5; and the bottom ends of the pair of air inlets 5 communicate with the outside. The two ends of the movable guide rod 10 extend horizontally and are fixedly connected to the valve seats 9 at both ends. In this embodiment, preferably, a sealing ring 13 is provided on the edge of the piston disc 7 for sealing, and the piston disc 7 is located between the pair of air inlets 5. In this embodiment, preferably, a rubber sealing sleeve is provided at the sliding connection between the inner side of the cylinder liner seat 6 and the movable guide rod 10 to prevent air leakage. Double-layer sealing rubber rings are provided at both ends of the inner side of the cylinder liner seat 6 to seal the gap between the valve seat 9 and the cylinder liner seat 6. This ensures a seal and prevents liquid flowing from the inlet 4 from entering the cylinder liner seat 6, guaranteeing that the liquid flow path and the gas passage are independent and not interconnected. In this embodiment, preferably, an outlet sealing sleeve 8 is embedded and fixedly installed in each outlet 3. The size of the outlet sealing sleeve 8 matches the end size of the valve seat 9. This ensures a seal when the valve seat 9 and the outlet sealing sleeve 8 are pressed together, thus ensuring that the corresponding outlet 3 is in a closed state.

[0020] Working principle: When gas is introduced into the gas chamber 11 only through the left air inlet 5, the gas concentrates in the left area of ​​the piston disc 7. As the amount of gas increases, the gas pressure increases, forcing the piston disc 7 to move horizontally to the right. This causes the movable guide rod 10 and the valve seat 9 to move horizontally to the right in sync. As a result, the right valve seat 9 gradually approaches the outlet sealing sleeve 8 until the right valve seat 9 and the outlet sealing sleeve 8 are completely fitted together, finally sealing the liquid outlet 3 on the right side. At the same time, the liquid outlet 3 on the left side is in a state of communication with the liquid inlet 4, and the liquid is discharged from the liquid outlet 3 on the left side. When gas is introduced into the gas chamber 11 only through the right air inlet 5, according to the same principle, the left valve seat 9 fits together with the outlet sealing sleeve 8, sealing the liquid outlet 3 on the left side, and the liquid outlet 3 on the right side is in an open state, and the liquid is discharged from the liquid outlet 3 on the right side.

[0021] 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 high-pressure pneumatically controlled three-way coaxial valve for external flow channels, comprising a main valve body (1), characterized in that: The main valve body (1) is provided with an inlet (4). The two ends of the main valve body (1) are connected by flanges to a pair of symmetrically distributed flange valve bodies (2). The pair of flange valve bodies (2) are provided with a pair of outlets (3) that communicate with the inlet (4). An outlet sealing sleeve (8) is embedded and fixedly provided in each outlet (3). The main valve body (1) is provided with a cylinder seat (6) that is coaxial with the pair of outlets (3). The cylinder seat (6) is provided with a pneumatic piston sealing assembly that can close any one of the outlets (3) by moving horizontally left and right.

2. The high-pressure pneumatically controlled three-way coaxial valve for external flow channels according to claim 1, characterized in that: The pneumatic piston sealing assembly includes an air chamber (11) formed in the middle of the cylinder liner (6), a movable guide rod (10) that moves horizontally within the cylinder liner (6) via a linear bearing (12), and a pair of valve seats (9) located at both ends of the inner side of the cylinder liner (6) for sealing the liquid outlet (3). A piston disc (7) is fixedly mounted on the movable guide rod (10) located within the air chamber (11). A pair of air inlets (5) are provided at both ends of the air chamber (11) and can be used to push the piston disc (7) to move horizontally left and right by air. The air chamber (11) is only connected to the pair of air inlets (5). The bottom ends of the pair of air inlets (5) are connected to the outside. The two ends of the movable guide rod (10) extend horizontally and are fixedly connected to the valve seats (9) at both ends.

3. The high-pressure pneumatically controlled three-way coaxial valve for external flow channels according to claim 2, characterized in that: The piston disc (7) is provided with a sealing ring (13) for sealing on its edge, and the piston disc (7) is located between a pair of air inlets (5).

4. The high-pressure pneumatically controlled three-way coaxial valve for external flow channels according to claim 2, characterized in that: A rubber sealing sleeve is provided at the sliding connection between the inner side of the cylinder liner seat (6) and the movable guide rod (10), and double-layer sealing rubber rings are provided at both ends of the inner side of the cylinder liner seat (6) to seal the gap between the valve seat (9) and the cylinder liner seat (6).

5. The high-pressure pneumatically controlled three-way coaxial valve for external flow channels according to claim 2, characterized in that: Each of the liquid outlets (3) is fitted with a fixed outlet sealing sleeve (8), the size of which matches the end size of the valve seat (9).

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