Double-channel single-action pneumatic control valve

Abstract

The utility model provides a double-channel single-action pneumatic control valve which comprises a left valve body assembly, a right valve body assembly and a connector assembly. The left valve body assembly comprises a valve body, a valve element cavity is formed in one end face of the valve body, an air control opening leading to the valve element cavity is formed in the other end face of the valve body, an air inlet and an air outlet which are spaced are formed in the side wall of the valve body in the axial direction, and a valve element is arranged in the valve element cavity in a sliding mode. The right valve body assembly and the left valve body assembly are the same in structure. The connector assembly comprises a connector, a spring channel penetrating through the two opposite end faces is formed in the middle of the connector, and a spring is arranged in the spring channel in a sleeved mode. According to the utility model, two channels are integrated; the pneumatic control valve adopts modular design, and is simple in structure and convenient to mount; the overall sealing performance is good, the operation reliability is improved, the service life is prolonged, the valve body is reasonable in internal design, the sealing ring is prevented from being cut in the installation process, and the assembly success rate is increased; the valve element cavity is large in passage diameter and reasonable in design, the valve element moves smoothly, the application range is wide, and the phenomena of blocking and the like do not exist.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic control valves, and particularly relates to a double-channel single-acting pneumatic control valve. Background Technique

[0002] A pneumatic control valve is a control valve widely used in the pneumatic control module of industrial equipment and products. Under some application conditions, due to the limitations of installation space, integration requirements, and control requirements, it is necessary to drive the pneumatic control valve through a pilot solenoid valve to achieve controlling a large-diameter with a small-diameter and controlling a large flow rate of gas with a small flow rate of gas.

[0003] At present, there are the following two problems with the pneumatic control valves in the industry:

[0004] 1. The product structure is complex and the disassembly and assembly difficulty is high;

[0005] 2. The stability of the pneumatic valve core is poor, and phenomena such as jamming and poor sealing occur. Content of the Utility Model

[0006] The utility model provides a double-channel single-acting pneumatic control valve, which solves the problems of complex structure, high disassembly and assembly difficulty, and poor valve core stability existing in the existing pneumatic control valves.

[0007] The technical solution of the utility model is realized as follows:

[0008] A double-channel single-acting pneumatic control valve includes a left valve body assembly, a right valve body assembly and a connector assembly; the left valve body assembly includes a valve body, the valve body has two opposite end faces, one end face is provided with a valve core cavity extending along the axial direction, the other end face is provided with a pneumatic control port leading to the valve core cavity, the side wall of the valve body is axially provided with spaced intake ports and outlet ports, a valve core is slidably arranged in the valve core cavity, the valve core includes an intake column section and an outlet column section fixedly connected together, the diameters of the intake column section and the outlet column section are different, the intake column section and the outlet column section are respectively matched with the intake port and the outlet port, and sealing devices in contact with the valve core cavity are arranged at both ends of the intake column section and both ends of the outlet column section; the structure of the right valve body assembly is the same as that of the left valve body assembly; the connector assembly includes a connector, the middle of the connector is a spring channel penetrating through the opposite end faces, and a spring is sleeved in the spring channel; both ends of the connector are fixedly connected to the openings of the valve core cavities of the left valve body assembly and the right valve body assembly respectively, and both ends of the spring are in contact with the end faces of the two valve cores.

[0009] Preferably, the number of the intake ports is at least one, and the intake ports are uniformly arranged in a circle around the axis of the valve body on the valve body; the number of the outlet ports is at least one, and the outlet ports are arranged in a circle around the axis of the valve body on the valve body.

[0010] Preferably, an inner annular intake groove corresponding to the intake port is formed in the inner wall of the spool chamber, and an inner annular exhaust groove corresponding to the exhaust port is also formed in the inner wall of the spool chamber.

[0011] Preferably, an outer annular intake groove corresponding to the intake port is formed in the outer wall of the valve body, and an outer annular exhaust groove corresponding to the exhaust port is also formed in the outer wall of the valve body.

[0012] Preferably, second sealing devices are provided at both ends of the outer annular intake groove and both ends of the outer annular exhaust groove.

[0013] Preferably, both the sealing device and the second sealing device are O-ring seals.

[0014] Preferably, an axially protruding spring guide post is fixed on the end face of the spool in contact with the spring, and the spring guide post is sleeved in the spring.

[0015] Preferably, at least one air pressure balance hole leading to the spring passage is formed in the outer side surface of the connector.

[0016] Preferably, both ends of the connector are sleeved in the opening of the spool chamber. A circle of slots matching both ends of the connector are formed in the opening of the spool chamber. A locking screw hole radially leading to the slots is formed in the side surface of the valve body. A set screw for fixing the connector is arranged in the locking screw hole. A V-shaped ring groove corresponding to the set screw is formed in the outer side surface of the connector.

[0017] Preferably, an axial screw hole is formed in the end face of the spool close to the pneumatic control port.

[0018] Advantages of the present utility model:

[0019] 1. Integrate two channels;

[0020] 2. The pneumatic control valve adopts a modular design, with a simple structure and convenient installation;

[0021] 3. The overall sealing performance is good, improving the operation reliability and service life. The internal design of the valve body is reasonable, avoiding scratches during the installation of the sealing ring and improving the assembly success rate;

[0022] 4. The through diameter of the spool chamber is large, with a reasonable design. The spool moves smoothly, has a wide application range, and there is no phenomenon such as jamming. Description of the Drawings

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0024] Figure 1 Structural schematic diagram of the present invention;

[0025] Figure 2 For Figure 1 Cross-sectional view along line A-A;

[0026] Figure 3 Cross-sectional view of the valve body in the present invention;

[0027] Figure 4 Stereogram of the valve core in the present invention;

[0028] Figure 5 Stereogram of the connector in the present invention;

[0029] Figure 6 Usage state diagram of the present invention.

[0030] The reference numerals in the figure are: 1 - left valve body assembly, 2 - right valve body assembly, 3 - connector assembly, 11 - valve body, 12 - valve core cavity, 13 - pneumatic control port, 14 - air inlet, 15 - air outlet, 16 - valve core, 161 - air inlet column section, 162 - air outlet column section, 163 - sealing device, 164 - screw hole, 171 - inner annular air inlet groove, 172 - inner annular air outlet groove, 181 - outer annular air inlet groove, 182 - outer annular air outlet groove, 183 - second sealing device, 19 - spring guide post, 31 - connector, 32 - spring channel, 33 - spring, 34 - air pressure balance hole, 35 - slot, 36 - set screw, 37 - V-ring groove. Specific embodiments

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0032] Refer to Figures 1-6, A double-channel single-acting pneumatically controlled valve, comprising a left valve body assembly 1, a right valve body assembly 2 and a connector assembly 3; the left valve body assembly 1 includes a valve body 11, the valve body 11 has two opposite end faces, one end face is provided with a spool cavity 12 extending along the axial direction, the other end face is provided with a pneumatic control port 13 leading to the spool cavity 12, the side wall of the valve body 11 is axially provided with spaced air inlet ports 14 and air outlet ports 15, a spool 16 is slidably arranged in the spool cavity 12, the spool 16 includes an air inlet column section 161 and an air outlet column section 162 fixedly connected together, the diameters of the air inlet column section 161 and the air outlet column section 162 are different, the air inlet column section 161 and the air outlet column section 162 are respectively matched with the air inlet port 14 and the air outlet port 15, and sealing devices 163 in contact with the spool cavity are arranged at both ends of the air inlet column section 161 and both ends of the air outlet column section 162; the right valve body assembly 2 has the same structure as the left valve body assembly 1; the connector assembly 3 includes a connector 31, the middle of the connector 31 is a spring channel 32 penetrating through the opposite end faces, and a spring 33 is sleeved in the spring channel 32; both ends of the connector 31 are fixedly connected to the openings of the spool cavities 12 of the left valve body assembly 1 and the right valve body assembly 2 respectively, and both ends of the spring 33 are in contact with the end faces of the two spools 16.

[0033] Preferably, the number of the air inlet ports 14 is at least one, and the air inlet ports 14 are uniformly arranged in a circle around the axis of the valve body 11 on the valve body 11; the number of the air outlet ports 15 is at least one, and the air outlet ports 15 are arranged in a circle around the axis of the valve body 11 on the valve body 11.

[0034] Preferably, an inner annular air inlet groove 171 corresponding to the air inlet port 14 is provided on the inner wall of the spool cavity 12, and an inner annular air outlet groove 172 corresponding to the air outlet port is also provided on the inner wall of the spool cavity 12.

[0035] Preferably, an outer annular air inlet groove 181 corresponding to the air inlet port 14 is provided on the outer wall of the valve body 1, and an outer annular air outlet groove 182 corresponding to the air outlet port 15 is also provided on the outer wall of the valve body 1.

[0036] Preferably, second sealing devices 183 are arranged at both ends of the outer annular air inlet groove 181 and both ends of the outer annular air outlet groove 182.

[0037] Preferably, both the sealing device 163 and the second sealing device 183 are O-ring seals.

[0038] Preferably, an axially protruding spring guide post 19 is fixed on the end face of the spool 16 in contact with the spring 33, and the spring guide post 19 is sleeved in the spring 33.

[0039] Preferably, at least one air pressure balance hole 34 leading to the spring channel 32 is formed on the outer side surface of the connector 31.

[0040] Preferably, both ends of the connector 31 are sleeved in the openings of the valve core cavity 12. A circle of slots 35 matching with both ends of the connector 31 are formed in the openings of the valve core cavity 12. Locking screw holes radially leading to the slots 35 are formed on the side surface of the valve body 11. A set screw 36 for fixing the connector is arranged in the locking screw holes. A circle of V-shaped ring grooves 37 corresponding to the set screw 36 are formed on the outer side surface of the connector.

[0041] Preferably, an axial screw hole 164 is formed on the end surface of the valve core 16 close to the air control port 13.

[0042] The working principle of the present utility model:

[0043] By ventilating the air control port 13, the valve core 16 is pushed to move, so that the air inlet and the air outlet are connected or disconnected, thereby realizing control. When the air control port 13 exhausts, the valve core 16 resets under the action of the spring. The left valve body assembly 1 and the right valve body assembly 2 can be used separately or simultaneously.

[0044] The present utility model integrates two channels; the air control valve adopts a modular design, with a simple structure and convenient installation; the overall sealing performance is good, improving the operation reliability and service life. The internal design of the valve body is reasonable, avoiding scratches during the installation of the sealing ring and improving the assembly success rate; the through diameter of the valve core cavity is large and the design is reasonable, the valve core moves smoothly, with a wide application range and no phenomenon such as jamming.

[0045] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A dual-channel single-acting pneumatically controlled valve, characterized in that: Comprising A left valve body assembly, the left valve body assembly includes a valve body, the valve body has two opposite end faces, one end face is provided with a spool cavity extending along the axial direction, the other end face is provided with a pneumatic control port leading to the spool cavity, the side wall of the valve body is axially provided with spaced intake ports and outlet ports, a spool is slidably arranged in the spool cavity, the spool includes an intake column section and an outlet column section fixedly connected together, the diameters of the intake column section and the outlet column section are different, the intake column section and the outlet column section are respectively matched with the intake port and the outlet port, and sealing devices in contact with the spool cavity are arranged at both ends of the intake column section and both ends of the outlet column section; A right valve body assembly, the structure of the right valve body assembly is the same as that of the left valve body assembly; A connector assembly, including a connector, the middle of the connector is a spring channel penetrating through the opposite end faces, and a spring is sleeved in the spring channel; Both ends of the connector are fixedly connected to the openings of the spool cavities of the left valve body assembly and the right valve body assembly respectively, and both ends of the spring are in contact with the end faces of the two spools.

2. The dual-channel single-acting pneumatically controlled valve according to claim 1, wherein: The number of the intake ports is at least one, and the intake ports are evenly arranged in a circle centered on the axis of the valve body on the valve body; the number of the outlet ports is at least one, and the outlet ports are arranged in a circle centered on the axis of the valve body on the valve body.

3. The dual-channel single-acting pneumatic control valve according to claim 2, wherein: An intake inner annular groove corresponding to the intake port is provided on the inner wall of the spool cavity, and an outlet inner annular groove corresponding to the outlet port is also provided on the inner wall of the spool cavity.

4. The dual-channel single-acting pneumatic control valve according to claim 3, characterized in that: An intake outer annular groove corresponding to the intake port is provided on the outer wall of the valve body, and an outlet outer annular groove corresponding to the outlet port is also provided on the outer wall of the valve body.

5. The dual-channel single-acting pneumatically controlled valve according to claim 4, wherein: Second sealing devices are arranged at both ends of the intake outer annular groove and both ends of the outlet outer annular groove.

6. The dual-channel single-acting pneumatically controlled valve according to claim 5, characterized in that: Both the sealing device and the second sealing device are O-ring seals.

7. The two-channel single-acting pneumatically controlled valve according to claim 1, characterized in that: An axially protruding spring guide post is fixed on the end face of the spool in contact with the spring, and the spring guide post is sleeved in the spring.

8. The dual-channel single-acting pneumatically controlled valve according to claim 1, characterized in that: At least one air pressure balance hole leading to the spring channel is provided on the outer side surface of the connector.

9. The dual-channel single-acting pneumatically controlled valve according to claim 1, characterized in that: Both ends of the connector are sleeved in the opening of the spool cavity, a circle of slots matched with both ends of the connector are provided in the opening of the spool cavity, a locking screw hole radially leading to the slot is provided on the side surface of the valve body, a set screw for fixing the connector is arranged in the locking screw hole, and a V-ring groove corresponding to the set screw is provided on the outer side surface of the connector.

10. The dual-channel single-acting pneumatic control valve according to claim 1, characterized in that: A screw hole along the axial direction is provided on the end face of the spool close to the pneumatic control port.

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