A new type of flange type pneumatic control two-position three-way L-shaped coaxial valve

Abstract

The utility model discloses a novel flange type pneumatic control two position three way L type coaxial valve, including valve body, the both ends symmetry fixed of valve body have intercommunication a pair of spliced valve body, and every spliced valve body all is provided with the flow outlet for the fluid export on the whole, be provided with the fluid inlet for the fluid access on the valve body, be provided with the piston valve assembly for switching the closure any one flow outlet in the valve body, the bottom of valve body is provided with pneumatic control mouth A and pneumatic control mouth B for controlling piston valve assembly movement, through the design pneumatic control two position three way L type coaxial valve can through two pneumatic control mouth to control the switching of the left and right movement of a piston valve seat respectively, can complete the communication switching of L type flow channel fast, work is more stable, avoids the problem that traditional solenoid valve spool action resistance is bigger, and diaphragm durability and stability are poor, and operation is more stable and reliable.

Description

Technical Field

[0001] This utility model belongs to the field of valve body technology, specifically relating to a novel flange-type pneumatically controlled two-position three-way L-type coaxial valve. Background Technology

[0002] Currently, solenoid valves are widely used in machine tool cooling and cleaning systems. Their disadvantages include: the liquid pressure acts directly on the valve core, increasing the resistance to valve core movement; another disadvantage is the diaphragm structure, which means that when the coolant contains impurities, the valve cannot completely close or open. Long-term operation and cutting impurities can also damage the diaphragm, affecting the normal operation of the equipment, resulting in a relatively high failure rate and poor valve body stability.

[0003] Therefore, this utility model designs a novel flange-type pneumatically controlled two-position three-way L-shaped coaxial valve. Utility Model Content

[0004] The purpose of this utility model is to provide a novel flange-type pneumatically controlled two-position three-way L-shaped coaxial valve to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel flange-type pneumatically controlled two-position three-way L-shaped coaxial valve, comprising a valve body, wherein a pair of interconnected spliced ​​valve bodies are symmetrically fixed at both ends of the valve body, and each spliced ​​valve body is provided with a flow outlet for fluid outflow, the valve body is provided with a fluid inlet for fluid inflow, a piston valve assembly for switching and closing any one of the flow outlets is provided inside the valve body, and a pneumatic control port A and a pneumatic control port B for controlling the movement of the piston valve assembly are provided at the bottom of the valve body.

[0006] Preferably, the piston valve assembly includes a cylinder liner seat fixedly disposed inside the valve body, and a piston valve seat horizontally movably disposed within the cylinder liner seat. The piston valve seat is divided into an inflation chamber A for pushing the piston valve seat to move horizontally to the right and an inflation chamber B for pushing the piston valve seat to move horizontally to the left. The inflation chambers A and B are provided with through vent holes. The pneumatic control port A communicates only with the inflation chamber A through the vent hole on the inflation chamber A, and the pneumatic control port B communicates only with the inflation chamber B through the vent hole on the inflation chamber B. The assembly also includes a guide sealing assembly located on each outlet for assisting the horizontal movement of the piston valve seat.

[0007] Preferably, each of the guide sealing assemblies includes a piston guide post and a sealing ring fixed inside the outlet. One end of the piston guide post passes through the sealing ring and extends movably into the inflation chamber A or the inflation chamber B. An opening communicating with the outlet is provided on the surface of the piston guide post near the outlet.

[0008] Preferably, a sealing ring for isolating pneumatic control port A and pneumatic control port B is embedded in the inner wall of the cylinder liner seat located between pneumatic control port A and pneumatic control port B, and double-layer sealing rings are embedded in the inner sides of the openings at both ends of the cylinder liner seat.

[0009] Preferably, the inner end of the piston guide column is provided with a double-layer sealing ring for sealing the inflation chamber A or the inflation chamber B.

[0010] Preferably, when any end of the piston valve seat is in contact with the sealing ring at the corresponding end, the opening on the piston guide post at the corresponding end that communicates with the outside of the outlet is closed, while the opening on the piston guide post at the other end is open.

[0011] Preferably, the fluid inlet and the outlet are T-shaped, and the cylinder liner seat, piston valve seat, outlet, piston guide column and sealing ring are all circular components with their centers coinciding with each other.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] By designing a pneumatically controlled two-position three-way L-shaped coaxial valve, the left and right movements of a piston valve seat can be switched through two pneumatic control ports. This allows for rapid switching of the L-shaped flow channels, resulting in more stable operation. It avoids the problems of high valve core resistance and poor diaphragm durability and stability found in traditional solenoid valves, making operation more stable and reliable. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the appearance of this utility model;

[0015] Figure 2 This is a bottom view of the structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the valve body structure of this utility model;

[0017] Figure 4 This is a cross-sectional structural diagram of the present invention;

[0018] In the diagram: 1. Valve body; 2. Spliced ​​valve body; 3. Fluid inlet; 4. Pneumatic control port A; 5. Pneumatic control port B; 6. Cylinder liner seat; 7. Piston valve seat; 8. Inflation chamber A; 9. Inflation chamber B; 10. Sealing ring; 11. Piston guide column; 12. Outlet; 13. Vent hole. Detailed Implementation

[0019] 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.

[0020] Example 1

[0021] Please see Figures 1 to 4 This utility model provides a technical solution: a novel flange-type pneumatically controlled two-position three-way L-shaped coaxial valve, including a valve body 1, with a pair of interconnected spliced ​​valve bodies 2 symmetrically fixed at both ends of the valve body 1, and each spliced ​​valve body 2 having a through-hole 12 for fluid outflow, a fluid inlet 3 for fluid inflow on the valve body 1, a piston valve assembly for switching and closing any one of the outlets 12 inside the valve body 1, and a pneumatic control port A4 and a pneumatic control port B5 for controlling the movement of the piston valve assembly at the bottom of the valve body 1.

[0022] In this embodiment, preferably, the piston valve assembly includes a cylinder liner seat 6 fixedly disposed inside the valve body 1, and a piston valve seat 7 horizontally movably disposed within the cylinder liner seat 6. The piston valve seat 7 is divided into an inflation chamber A8 for pushing the piston valve seat 7 to move horizontally to the right and an inflation chamber B9 for pushing the piston valve seat 7 to move horizontally to the left. The inflation chambers A8 and B9 are provided with through vent holes 13. The pneumatic control port A4 communicates only with the inflation chamber A8 through the vent hole 13 on the inflation chamber A8, and the pneumatic control port B5 communicates only with the inflation chamber B9 through the vent hole 13 on the inflation chamber B9. The assembly also includes a guide sealing assembly located on each outlet 12 for assisting the horizontal movement of the piston valve seat 7.

[0023] In this embodiment, preferably, each guide sealing assembly includes a piston guide post 11 and a sealing ring 10 fixed inside the outlet 12. One end of the piston guide post 11 passes through the sealing ring 10 and extends movably into the inflation chamber A8 or the inflation chamber B9. An opening communicating with the outlet 12 is provided on the surface of the piston guide post 11 near the outlet 12 to form a flow channel.

[0024] In this embodiment, preferably, a sealing ring is embedded in the inner wall of the cylinder liner seat 6 located between the pneumatic control port A4 and the pneumatic control port B5 to isolate the pneumatic control port A4 and the pneumatic control port B5. Double-layer sealing rings are embedded in the inner sides of the openings at both ends of the cylinder liner seat 6 to seal the cylinder and ensure that the pneumatic control port A4 can be smoothly inflated into the inflation chamber A8 and the pneumatic control port B5 can be smoothly inflated into the inflation chamber B9, without leakage from the gap between the cylinder liner seat 6 and the piston valve seat 7.

[0025] In this embodiment, preferably, a double-layer sealing ring is provided on one inner end of the piston guide post 11 to close the inflation chamber A8 or the inflation chamber B9. To ensure that the gas filled into the inflation chamber A8 or the inflation chamber B9 does not leak, the piston valve seat 7 is pushed to the left to close the left outlet 12, or to the right to close the right outlet 12, by the increase of air pressure. In this embodiment, preferably, when either end of the piston valve seat 7 is in contact with the sealing ring 10 at the corresponding end, the opening on the piston guide post 11 at the corresponding end that communicates with the outside of the outlet 12 is closed, while the opening on the piston guide post 11 at the other end is open, forming an L-shaped flow channel that can switch directions. In this embodiment, preferably, the fluid inlet 3 and the pair of outlets 12 are T-shaped. The cylinder liner seat 6, piston valve seat 7, outlet 12, piston guide post 11, and sealing ring 10 are all circular components, and their centers coincide.

[0026] Working principle: When inflation is performed only through pneumatic control port A4, gas enters inflation chamber A8, causing an increase in air pressure within inflation chamber A8. This causes piston valve seat 7 to move to the right, closing the right end of piston valve seat 7 with the sealing ring 10 located at the right end. Simultaneously, the opening on the right piston guide post 11 is closed, sealing the right outlet 12. At the same time, the left outlet 12 remains open. Conversely, when inflation is performed only through pneumatic control port B5, gas enters inflation chamber B9, increasing the air pressure within inflation chamber B9. This forces piston valve seat 7 to move to the left, similarly sealing the left outlet 12. Simultaneously, the right outlet 12 opens, remaining open.

[0027] 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 novel flange-type pneumatically controlled two-position three-way L-shaped coaxial valve, comprising a valve body (1), characterized in that: The valve body (1) has a pair of interconnected valve bodies (2) symmetrically fixed at both ends, and each valve body (2) has a through outlet (12) for fluid outflow. The valve body (1) has a fluid inlet (3) for fluid inflow. The valve body (1) has a piston valve assembly for switching and closing any one of the outlets (12). The bottom of the valve body (1) has a pneumatic control port A (4) and a pneumatic control port B (5) for controlling the movement of the piston valve assembly.

2. The novel flange-type pneumatically controlled two-position three-way L-type coaxial valve according to claim 1, characterized in that: The piston valve assembly includes a cylinder liner seat (6) fixedly disposed inside the valve body (1), and a piston valve seat (7) horizontally movably disposed inside the cylinder liner seat (6). The piston valve seat (7) is divided into an inflation chamber A (8) for pushing the piston valve seat (7) to move horizontally to the right and an inflation chamber B (9) for pushing the piston valve seat (7) to move horizontally to the left. The inflation chamber A (8) and the inflation chamber B (9) are provided with through vent holes (13). The pneumatic control port A (4) is connected to the inflation chamber A (8) only through the vent hole (13) on the inflation chamber A (8), and the pneumatic control port B (5) is connected to the inflation chamber B (9) only through the vent hole (13) on the inflation chamber B (9). It also includes a guide sealing assembly located on each outlet (12) for assisting the horizontal movement of the piston valve seat (7).

3. A novel flange-type pneumatically controlled two-position three-way L-type coaxial valve according to claim 2, characterized in that: Each of the guide sealing assemblies includes a piston guide post (11) fixed inside the outlet (12) and a sealing ring (10). One end of the piston guide post (11) passes through the sealing ring (10) and extends movably into the inflation chamber A (8) or the inflation chamber B (9). The surface of the piston guide post (11) near the outlet (12) is provided with an opening communicating with the outlet (12).

4. A novel flange-type pneumatically controlled two-position three-way L-type coaxial valve according to claim 3, characterized in that: A sealing ring for isolating the pneumatic control port A (4) and the pneumatic control port B (5) is embedded in the inner wall of the cylinder liner seat (6), and double-layer sealing rings are embedded in the inner sides of the openings at both ends of the cylinder liner seat (6).

5. A novel flange-type pneumatically controlled two-position three-way L-type coaxial valve according to claim 4, characterized in that: The piston guide post (11) is provided with a double-layer sealing ring on one end of its inner side for sealing the inflation chamber A (8) or the inflation chamber B (9).

6. A novel flange-type pneumatically controlled two-position three-way L-type coaxial valve according to claim 5, characterized in that: When any end of the piston valve seat (7) is in contact with the sealing ring (10) at the corresponding end, the opening on the piston guide post (11) at the corresponding end that communicates with the outside of the outlet (12) is closed, while the opening on the piston guide post (11) at the other end is open.

7. A novel flange-type pneumatically controlled two-position three-way L-type coaxial valve according to claim 5, characterized in that: The fluid inlet (3) and the outlet (12) are T-shaped. The cylinder liner seat (6), piston valve seat (7), outlet (12), piston guide column (11) and sealing ring (10) are all circular components, and their centers coincide with each other.

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