Intelligent pneumatic three-position valve assembly

Abstract

The utility model relates to an intelligent pneumatic three-position valve assembly which comprises a valve body, air inlet holes are symmetrically formed in the left end and the right end of the valve body, air outlet holes are evenly distributed in the front end of the valve body, micro valves are evenly distributed at the upper end of the valve body, and the rear ends of the air outlet holes are connected with air outlet pipes. The end, away from the air outlet hole, of the air outlet pipe is connected with a first airflow pipe, a sealing terminal is arranged in the air inlet hole, a dynamic sealing structure is arranged in the middle of the inner surface of the sealing terminal, a sealing groove is formed in the end, close to the valve body, of the sealing terminal, and a sealing ring is arranged in the sealing groove. By arranging the dynamic sealing structure, the air pressure formed by airflow is utilized to control whether the sealing rubber sheet and the annular plate are in contact to form a whole or not, dynamic sealing is achieved, and using blocking is not needed. The micro valves are arranged to respectively control the flow and on-off of the air outlet holes, so that the air displacement of the air outlet holes is consistent, and the power consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic three-position valve components, in particular to an intelligent pneumatic three-position valve component. Background Art

[0002] In the air pressure control system, the pneumatic three-way valve is used to control the movement of the single-acting cylinder, which can control the air intake and exhaust of the cylinder, as well as the neutral position of the cylinder; specifically, when the three-way valve is in the neutral position, the cylinder is in a stopped state; when the three-way valve controls the air intake, the cylinder will move in one direction; when the three-way valve controls the exhaust, the cylinder will move in another direction; the existing pneumatic three-way valve assembly has a difference in the air output of the air outlets in different positions, and the parts that block the air holes are easy to fall off, and the sealing is unstable, so we designed an intelligent pneumatic three-way valve assembly.

[0003] Patent No. CN202320544625.9 is a Chinese utility model patent, which discloses a vacuum pneumatic valve, including a pneumatic valve assembly and a vacuum valve body. At least two center rings are mounted on the conical telescopic head of the pneumatic valve assembly. The vacuum valve body has a three-way portion and a conical base. The gas can flow through the first flange opening, the telescopic channel, and the through opening of the three-way portion in sequence to the conical outlet channel and the second flange opening of the conical base and flow out. The conical outlet channel is gradually tapered, and the width of the widest part of the top is not less than the width of the opening. Dust and other impurities will not accumulate at the junction, but will flow out along the guide, and through the at least two center rings, even if one of the center rings fails, the air tightness of the vacuum pneumatic valve can still be ensured; therefore, the utility model effectively improves the problems encountered in the prior art, thereby providing a vacuum pneumatic valve that can effectively maintain air tightness, but the utility model has the following problems: first, it does not have a dynamic sealing design at the air inlet ends at both ends, and the use of plugs for sealing increases the number of parts and makes them easy to lose. Secondly, it does not have a design to reduce power consumption. Conventionally, two control valves are used to control the operation of the entire three-position valve assembly, and a high-power control valve needs to be selected to ensure the exhaust volume. Utility Model Content

[0004] The purpose of the utility model is to address the deficiencies of the prior art and to solve the technical problems of uneven exhaust volume of exhaust holes in the existing pneumatic three-position valve assembly, high power consumption, and the use of plugs for sealing, which increases the number of parts and is easy to lose, by providing a dynamic sealing structure and a micro valve.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An intelligent pneumatic three-position valve assembly comprises a valve body, wherein air inlet holes are symmetrically arranged at the left and right ends of the valve body, air outlet holes are evenly distributed at the front end of the valve body, and microvalves are evenly distributed at the upper end of the valve body, the rear end of the air outlet holes is connected to an air outlet pipe, and the end of the air outlet pipe away from the air outlet holes is connected to a No. 1 air flow pipe, a sealing terminal is arranged in the hole of the air inlet hole, a dynamic sealing structure is arranged in the middle of the inner surface of the sealing terminal, and a sealing groove is arranged at the end of the sealing terminal close to the valve body, and a sealing ring is arranged in the groove of the sealing groove.

[0007] Preferably, the dynamic sealing structure comprises a groove, an annular plate is arranged in the groove, a second sealing groove is arranged cocentrically at the right end of the annular plate, and a convex ring is arranged in the groove of the second sealing groove.

[0008] As a preference, a mounting plate is provided at the lower right end of the annular plate, a sealing rubber sheet is provided at the upper end of the mounting plate, and a double-layer protrusion is provided cocentrically with the left end of the sealing rubber sheet.

[0009] As a preference, a wiring seat is provided at the rear side of the upper end of the microvalve, and a mounting groove is provided at the lower end of the microvalve, and air holes No. 1, No. 2, and No. 3 are provided on the upper surface of the mounting groove from left to right, and the three air holes have the same structure, and fixing holes are symmetrically provided at the front and rear ends of the mounting groove.

[0010] As a preference, the upper end of the No. 1 air flow tube is connected to the No. 2 air hole, the lower end of the No. 1 air hole is connected to the No. 2 air flow tube, the lower end of the No. 2 air flow tube is provided with an exhaust pipe, the left and right ends of the exhaust pipe are connected to the exhaust end, and the exhaust end is located at the left and right ends of the valve body.

[0011] As a preference, the lower end of the No. 3 air hole is connected to a No. 3 airflow pipe, the lower end of the No. 3 airflow pipe is provided with an air inlet pipe, and both left and right ends of the air inlet pipe are connected to sealing terminals.

[0012] As a preferred embodiment, the front end of the air outlet is connected to the air terminal, and two mounting holes are provided at the upper and lower ends of the valve body.

[0013] Beneficial effects of the utility model:

[0014] (1) In the utility model, a dynamic sealing structure is provided. When the right-end sealing terminal starts to take in air and transmits gas to the air intake pipe, the right-end sealing rubber sheet is blown to the left under the influence of the air flow, while the left-end sealing rubber sheet is squeezed to the left under the action of the air pressure of the air flow, so that the double-layer protrusion enters the No. 2 sealing groove, thereby forming a whole between the left-end sealing rubber sheet and the annular plate, realizing dynamic sealing without the need for blockage.

[0015] (2) Compared with the conventional pneumatic three-position valve assembly which uses two control valves to control the entire assembly, the present invention provides a plurality of microvalves to respectively control the flow rate and on-off circuit of the air outlet while ensuring the exhaust volume, so that the exhaust volume of each air outlet is consistent, thereby reducing power consumption.

[0016] In summary, the utility model has the advantages of simple structure, consistent exhaust volume, low power consumption and good sealing, and is particularly suitable for the technical field of pneumatic three-position valve components. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a structural schematic diagram of an intelligent pneumatic three-position valve assembly.

[0019] Figure 2 This is a schematic diagram of the cutaway left-side structure of the sealed terminal part.

[0020] Figure 3 This is a schematic diagram of the cutaway right-side structure of the sealed terminal part.

[0021] Figure 4 It is a schematic diagram of the structure of the sealing film part.

[0022] Figure 5 This is a schematic diagram of the microvalve part from the bottom up.

[0023] Figure 6 It is a schematic diagram of the cross-sectioned axial structure of the valve body. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present utility model are clearly and completely described below in conjunction with the accompanying drawings.

[0025] Embodiment 1

[0026] like Figures 1 to 6As shown, the utility model provides an intelligent pneumatic three-position valve component, including a valve body 1. Gas enters the valve body 1 and is diverted inside the valve body 1. Air inlet holes 11 are symmetrically arranged at the left and right ends of the valve body 1. Gas from an external gas generating device enters the valve body 1 through the air inlet holes 11, and air outlet holes 12 are evenly distributed at the front end of the valve body 1. The gas in the valve body 1 is blown out from different air outlet holes 12, thereby controlling the working state of the cylinder, and micro valves 2 are evenly distributed at the upper end of the valve body 1. The micro valves 2 are usually composed of a valve body, a valve core, a coil, a magnetic conductive element and other parts, and have the characteristics of small size, light weight and low power consumption. They can be used to control water flow, air flow and the like, and realize intelligent management of air pressure control systems. Compared with conventional pneumatic three-position valve components that use two control valves to control the entire component, multiple micro valves 2 are arranged to respectively control the flow and pressure of different air outlet holes 12 while ensuring the exhaust volume. The circuit is opened and closed so that the gas in the air intake pipe 33 has three paths to go out of the valve body 1, so as to control the different use states of the cylinder, and the micro valve 2 is controlled by the control of the associated controller, the rear end of the air outlet 12 is connected to the air outlet pipe 13, and the end of the air outlet pipe 13 away from the air outlet 12 is connected to the No. 1 air flow pipe 14, and a sealing terminal 3 is provided in the hole of the air intake hole 11 for sealing the connection between the air intake hole 11 and the external air pipe, and a dynamic sealing structure 4 is provided in the middle of the inner surface of the sealing terminal 3, and the pressure brought by the airflow in the air intake pipe 33 is used to achieve dynamic sealing. Even if the plug 48 is not used, it can ensure that the airflow flows to one side and the sealing terminal 3 is in an airtight sealed state, and a sealing groove 31 is provided at the end of the sealing terminal 3 close to the valve body 1, and a sealing ring 32 is provided in the groove of the sealing groove 31 to increase the sealing between the sealing terminal 3 and the valve body 1 and prevent gas from overflowing.

[0027] Further, if Figure 2 As shown, the dynamic sealing structure 4 includes a groove 41, which provides an installation position for the annular plate 42 and the mounting plate 45. An annular plate 42 is arranged in the groove of the groove 41. The annular plate 42 is used together with a sealing film 46 to achieve connection or separation between the two by air flow and air pressure. A No. 2 sealing groove 43 is arranged cocentrically at the right end of the annular plate 42. A convex ring 44 is arranged in the groove of the No. 2 sealing groove 43 to increase the contact path, thereby increasing the sealing effect.

[0028] Further, if Figure 3As shown, a mounting plate 45 is provided at the lower right end of the annular plate 42, which is made of plastic and is relatively hard, so as to prevent the sealing film 46 from completely contacting the inner surface of the sealing terminal 3 under the action of the airflow and losing the dynamic sealing function. A sealing film 46 is provided at the upper end of the mounting plate 45, which is a rubber sheet. A double-layer protrusion 47 is provided at the concentric center of the left end of the sealing film 46 to form a tortuous contact area with the second sealing groove 43, thereby ensuring the sealing effect. When the sealing terminal 3 at one end starts to take in air and transmits gas to the air inlet pipe 33, the sealing film 46 at the adjacent end is blown down by the airflow, so that the airflow flows into the air inlet pipe 33, and the sealing film 46 on the other side contacts the annular plate 42 under the action of the air pressure of the airflow, so that the double-layer protrusion 47 enters the second sealing groove 43, so that the sealing film 46 and the annular plate 42 form a whole, realizing dynamic sealing, without the need for blockage.

[0029] Further, if Figure 5 As shown, a wiring socket 21 is provided at the rear side of the upper end of the microvalve 2, which is connected to the associated controller for control, and a mounting groove 22 is provided at the lower end of the microvalve 2, which is a sunken design, so that the connection between the microvalve 2 and the valve body 1 is more secretive and beautiful, and a No. 1 air hole 23, a No. 2 air hole 24, and a No. 3 air hole 25 are provided on the upper surface of the mounting groove 22 from left to right, and the three air holes have the same structure, and fixing holes 26 are symmetrically provided at the front and rear ends of the mounting groove 22 for fixing the microvalve 2 and the valve body 1 together with bolts.

[0030] Further, if Figure 6 As shown, the upper end of the No. 1 air flow tube 14 is connected to the No. 2 air hole 24. When the micro valve 2 is in the passage state, the passing gas flows from the No. 2 air hole 24 to the No. 1 air flow tube 14, and then is transmitted from the air terminal 5 along the air pipe to the cylinder to be used. The lower end of the No. 1 air hole 23 is connected to the No. 2 air flow tube 15. The lower end of the No. 2 air flow tube 15 is provided with an exhaust pipe 16. The air flow returning from the cylinder to be used is discharged from the micro valve 2 along the No. 1 air hole 23, the No. 2 air flow tube 15, and the exhaust pipe 16 from the exhaust terminal 17. The left and right ends of the exhaust pipe 16 are connected to the exhaust terminal 17, and the exhaust terminal 17 is located at the left and right ends of the valve body 1.

[0031] Furthermore, the lower end of the No. 3 air hole 25 is connected to the No. 3 air flow tube 18, and the lower end of the No. 3 air flow tube 18 is provided with an air intake pipe 33, and the left and right ends of the air intake pipe 33 are connected to the sealing terminal 3. The air flow flows into the air intake pipe 33 from the sealing terminal 3 on one side and then enters the No. 3 air flow tube 18, and transmits the gas to the No. 1 air flow tube 14 through the micro valve 3 in the passage state, and then transmits the gas from the air terminal 5 along the air pipe to the cylinder to be used.

[0032] Further, if Figure 1As shown, the front end of the air outlet 12 is connected to the air terminal 5 to ensure the sealing between the air pipe and the air outlet 12. Two mounting holes 19 are provided at the upper and lower ends of the valve body 1. The valve body 1 can be fixed in the mounting position by passing bolts through the mounting holes 19.

[0033] Working process: first, the gas is fed into the sealing terminal 3 on one side to start intake, and the gas is transmitted to the intake pipe 33. The sealing film 46 at the adjacent end is blown down by the influence of the airflow, so that the airflow flows into the intake pipe 33; further, the sealing film 46 on the other side contacts the annular plate 42 under the action of the air pressure of the airflow, so that the double-layer protrusion 47 enters the No. 2 sealing groove 43, so that the sealing film 46 and the annular plate 42 form a whole, realizing dynamic sealing, so that the gas in the intake pipe 33 flows to the No. 3 airflow pipe 18; further, the associated controller selects to control one microvalve 2 to be in the passage, and the others to be in the open circuit, so that the gas in the No. 3 airflow 18 flows to the No. 2 air hole 24, the No. 1 airflow pipe 14, and the air terminal 5 through the microvalve 2 in the passage, and is transmitted along the air pipe to the cylinder to be used, so that the cylinder can be expanded and contracted.

[0034] In the description of the present invention, it should be understood that the terms "front and back", "left and right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the equipment or components referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the utility model.

[0035] Of course, in the present technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0036] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art under the technical guidance of the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An intelligent pneumatic three-position valve assembly, characterized in that: The invention comprises a valve body (1), wherein air inlet holes (11) are symmetrically arranged at the left and right ends of the valve body (1), and air outlet holes (12) are evenly distributed at the front end of the valve body (1), and a micro valve (2) is evenly distributed at the upper end of the valve body (1), the rear end of the air outlet hole (12) is connected to an air outlet pipe (13), and the end of the air outlet pipe (13) away from the air outlet hole (12) is connected to a first air flow pipe (14), a sealing terminal (3) is arranged in the hole of the air inlet hole (11), a dynamic sealing structure (4) is arranged in the middle of the inner surface of the sealing terminal (3), and a sealing groove (31) is arranged at the end of the sealing terminal (3) close to the valve body (1), and a sealing ring (32) is arranged in the groove of the sealing groove (31).

2. The intelligent pneumatic three-position valve assembly according to claim 1, characterized in that: The dynamic sealing structure (4) comprises a groove (41), an annular plate (42) is arranged in the groove of the groove (41), a second sealing groove (43) is arranged cocentrically at the right end of the annular plate (42), and a convex ring (44) is arranged in the groove of the second sealing groove (43).

3. The intelligent pneumatic three-position valve assembly according to claim 2, characterized in that: A mounting plate (45) is provided at the lower right end of the annular plate (42), a sealing rubber sheet (46) is provided at the upper end of the mounting plate (45), and a double-layer protrusion (47) is provided cocentrically with the left end of the sealing rubber sheet (46).

4. The intelligent pneumatic three-position valve assembly according to claim 1, characterized in that: A wiring seat (21) is provided at the rear side of the upper end of the micro valve (2), and a mounting groove (22) is provided at the lower end of the micro valve (2). The upper surface of the mounting groove (22) is provided with a first air hole (23), a second air hole (24), and a third air hole (25) in sequence from left to right, and the three air holes have the same structure. Fixing holes (26) are symmetrically provided at the front and rear ends of the mounting groove (22).

5. The intelligent pneumatic three-position valve assembly according to claim 4, characterized in that: The upper end of the No. 1 air flow pipe (14) is connected to the No. 2 air hole (24), the lower end of the No. 1 air hole (23) is connected to the No. 2 air flow pipe (15), the lower end of the No. 2 air flow pipe (15) is provided with an exhaust pipe (16), the left and right ends of the exhaust pipe (16) are connected to exhaust ends (17), and the exhaust ends (17) are located at the left and right ends of the valve body (1).

6. The intelligent pneumatic three-position valve assembly according to claim 4, characterized in that: The lower end of the No. 3 air hole (25) is connected to the No. 3 air flow pipe (18), and the lower end of the No. 3 air flow pipe (18) is provided with an air intake pipe (33), and both left and right ends of the air intake pipe (33) are connected to the sealing terminal (3).

7. The intelligent pneumatic three-position valve assembly according to claim 1, characterized in that: The front end of the air outlet (12) is connected to the air connection terminal (5), and two mounting holes (19) are provided at the upper and lower ends of the valve body (1).

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