CN213332686U - Pneumatic program control valve - Google Patents

Abstract

The utility model relates to a pneumatic program control valve, which is provided with a discharge passage in the valve body. The cylinder includes a body, a piston, and a sealing disk. The body includes a first end and an opposing second end. The second end is used for connecting the valve body. The sealing disc is assembled at the second end and is used for preventing the body and the valve body from communicating. The piston is slidably assembled in the body, penetrates the sealing disc and extends into the valve body for blocking or opening the discharge passage. The inside of the lateral wall of body is equipped with the inlet channel who extends to the second end from first end, and inlet channel does not link up the second end. The piston and the first end form a first inlet chamber and the piston and the sealing disk form a second inlet chamber. One end of the first air inlet cavity, which is far away from the piston, is provided with a first air inlet communicated with the air inlet channel, and a first electromagnetic valve for controlling the first air inlet to be opened or closed is arranged in the first air inlet. And a second air inlet communicated with the air inlet channel is arranged at the position, adjacent to the sealing disc, of the second air inlet cavity, and a second electromagnetic valve for controlling the second air inlet to be opened or closed is arranged in the second air inlet.

Description

Pneumatic program control valve

Technical Field

The utility model relates to a programmable valve technical field especially relates to a pneumatic type programmable valve.

Background

The pneumatic programmable valve is a cut-off valve driven by a pneumatic mode. The valve can be remotely controlled by a computer program through being connected with a control system, such as a single chip microcomputer, so as to realize the opening and closing operations of the valve.

In the prior art, a pneumatic program control valve generally adopts ventilation at two ends of a cylinder respectively to realize reciprocating motion of a piston installed in the cylinder, and further realizes plugging or opening of a discharge channel in the valve body through a valve core installed on the piston. However, the two ends of the cylinder are respectively required to be provided with a gas transmission component such as a vent pipe to transmit gas to the cylinder, so that the installation process is complicated and the material consumption is high, and the gas leakage is easily caused if the operation is not proper.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a pneumatic type programmable valve, include:

a valve body having a discharge passage therein;

the cylinder comprises a body, a piston and a sealing disc; the body comprises a first end and an opposite second end, the second end is used for connecting the valve body, the sealing disc is assembled at the second end and used for preventing the body and the valve body from communicating, the piston is assembled in the body in a sliding mode, penetrates through the sealing disc and extends into the valve body, and the piston is used for plugging or opening the discharge channel;

the side wall of the body is internally provided with an air inlet channel which extends from the first end to the second end, and the air inlet channel does not penetrate through the second end; the piston and the first end form a first air inlet cavity, and the piston and the sealing disc form a second air inlet cavity; one end of the first air inlet cavity, which is far away from the piston, is provided with a first air inlet communicated with the air inlet channel, and a first electromagnetic valve for controlling the first air inlet to be opened or closed is arranged in the first air inlet; and a second air inlet communicated with the air inlet channel is arranged at the position, adjacent to the sealing disc, of the second air inlet cavity, and a second electromagnetic valve for controlling the second air inlet to be opened or closed is arranged in the second air inlet.

Optionally, the discharge passage includes an inlet portion and an outlet portion communicating with each other and the valve body has a mounting portion for connecting the second end.

Optionally, the outer edge of the second end is provided with a limiting protrusion, and the outer edge of the mounting part is provided with a limiting slot matched with the limiting protrusion; the limiting protrusion and the limiting slot are in inserted fit with each other so as to assemble the body on the valve body.

Optionally, the matching part of the limiting protrusion and the limiting slot is provided with a thread, and the limiting protrusion is screwed into the limiting slot.

Optionally, the piston comprises a piston body slidably assembled on the inner wall of the body and a push rod arranged in the axial direction of the piston body; and

the sealing disc is provided with a through sliding hole along the axial direction, and the push rod penetrates through the sliding hole and extends into the valve body from the mounting part.

Optionally, the side wall of the piston body for engaging with the inner wall of the body is provided with a first sealing element.

Optionally, a valve core is assembled at the free end of the push rod; when the cylinder is started, the piston body drives the push rod and the valve core to move up and down, so that the feeding part and the discharging part are communicated or sealed.

Optionally, a fixing part for butting the valve core is arranged at the intersection of the feeding part and the discharging part, and the fixing part is provided with a fixing surface which is obliquely arranged at an angle; and the valve core is provided with a matching surface matched with the fixing surface.

Optionally, the fixing surface and/or the mating surface is provided with a second sealing element.

Optionally, the inclination angle of the fixing surface is 90 degrees.

The embodiment of the utility model provides a technical scheme can include following beneficial effect:

the embodiment of the utility model provides a pneumatic type programme-controlled valve is equipped with discharge passage in the valve body. The second end of the body of the cylinder is used for connecting the valve body, and a sealing disc is assembled at the second end and can be used for preventing the body and the valve body from being communicated. One end of the first air inlet cavity, which is far away from the piston, is provided with a first air inlet communicated with the air inlet channel, and the position of the second air inlet cavity, which is close to the sealing disc, is provided with a second air inlet communicated with the air inlet channel. As such, the intake passage can communicate with both the first intake port and the second intake port. The first air inlet is internally provided with a first electromagnetic valve for controlling the first air inlet to be opened or closed. A second electromagnetic valve for controlling the opening or closing of the second air inlet is arranged in the second air inlet. When the air inlet channel conveys air into the first air inlet cavity, the first electromagnetic valve is opened, and the second electromagnetic valve is closed. Therefore, gas can not enter the second gas inlet cavity. Conversely, when the inlet passage delivers gas into the second inlet chamber, the second solenoid valve opens and the first solenoid valve closes. Therefore, gas can not enter the first gas inlet cavity. The structure is designed integrally and operates stably. Compared with the method that the first air inlet and the second air inlet are respectively provided with an air conveying component such as a vent pipe for conveying air to the air cylinder, the method does not cause the leakage of air at the joint, saves materials and is attractive in appearance.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a schematic structural view of a pneumatic program control valve according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of the body shown in FIG. 1;

FIG. 3 is a schematic view of the piston, sealing disk and cartridge mounting arrangement of FIG. 1;

fig. 4 is a schematic structural view of the valve body shown in fig. 1.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of the terms "a" or "an" and the like in the description and in the claims does not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in the specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

Fig. 1 is a schematic structural view of a pneumatic program control valve according to an embodiment of the present invention. Fig. 2 is a schematic structural view of the body shown in fig. 1. FIG. 3 is a schematic view of the piston, sealing disk and valve cartridge assembly shown in FIG. 1. Fig. 4 is a schematic structural view of the valve body shown in fig. 1.

Referring to fig. 1 to 4, the embodiment of the present invention provides a pneumatic programmable valve 100, which includes a valve body 1 and a cylinder 2. A discharge passage 11 is provided in the valve body 1. The cylinder 2 includes a body 21, a piston 22, and a seal disk 23. The body 21 includes a first end 211 and an opposite second end 212. The second end 212 is used for connecting the valve body 1, the sealing disc 23 is assembled at the second end 212 and used for preventing the body 21 and the valve body 1 from communicating, and the piston 22 is slidably assembled in the body 21, penetrates through the sealing disc 23 and extends into the valve body 1 and used for blocking or opening the discharge passage 11. The side wall of the main body 21 has an air inlet channel 213 extending from the first end 211 to the second end 212, and the air inlet channel 213 does not penetrate the second end 212. The piston 22 and the first end 211 form a first inlet chamber 214 and the piston 22 and the sealing disc 23 form a second inlet chamber 215. The end of the first inlet chamber 214 remote from the piston 22 is provided with a first inlet 216 communicating with the inlet channel 213, and the first inlet 216 is provided with a first solenoid valve 218 for controlling the opening or closing thereof. The second inlet chamber 215 is provided with a second inlet port 217 communicating with the inlet passage 213 at a position adjacent to the seal disk 23, and the second inlet port 217 is provided with a second solenoid valve 219 for controlling the opening or closing thereof.

The embodiment of the utility model provides a pneumatic type ooze valve 100 is equipped with discharge passage 11 in the valve body 1. The second end 212 of the body 21 of the cylinder 2 is used for connecting the valve body 1, and the sealing disc 23 is assembled at the second end 212 and can be used for preventing the body 21 and the valve body 1 from communicating. The first inlet chamber 214 is provided at an end thereof remote from the piston 22 with a first inlet port 216 communicating with the inlet passage 213, and the second inlet chamber 215 is provided adjacent to the seal plate 23 with a second inlet port 217 communicating with the inlet passage 213. As such, the intake passage 213 may communicate with both the first intake port 216 and the second intake port 217. The first air inlet 216 is provided with a first solenoid valve 218 for controlling the opening or closing thereof. The second air inlet 217 is provided with a second solenoid valve 219 for controlling the opening or closing thereof. When the inlet passage 213 delivers gas into the first inlet chamber 214, the first solenoid valve 218 is opened and the second solenoid valve 219 is closed. In this manner, it is ensured that no gas is admitted into the second inlet chamber 215. Conversely, when the inlet passage 213 delivers gas into the second inlet chamber 215, the second solenoid 219 opens and the first solenoid 218 closes. In this manner, it is ensured that no gas is admitted into the first intake chamber 214. The structure is designed integrally and operates stably. Compared with the method that a gas transmission component such as a vent pipe is respectively arranged on the first gas inlet 216 and the second gas inlet 217 to transmit gas to the cylinder 2, the method does not cause gas leakage at the joint, saves materials and is attractive in appearance.

Referring to fig. 1 to 4, a first end 211 of the body 21 is in a closed state, and a second end 212 opposite thereto is in an open state. In this manner, the second end 212 may be used to connect to the valve body 1. The discharge passage 11 in the valve body 1 may include an inlet portion 111 and an outlet portion 112 communicating with each other and the valve body 1 has a mounting portion 12 for connecting the second end 212. The mounting portion 12 is hollow and communicates with the feeding portion 111 and the discharging portion 112. Thus, the cavity formed inside the mounting portion 12 also belongs to the part of the discharge channel 11.

Further, in order to ensure the stable installation between the body 21 and the valve body 1, a limiting protrusion 2121 may be provided on the outer edge of the second end 212, and a limiting slot 121 matched with the limiting protrusion 2121 may be provided on the outer edge of the mounting portion 12. The limiting protrusion 2121 and the limiting insertion groove 121 are inserted and fitted to assemble the body 21 to the valve body 1. Specifically, the limiting protrusion 2121 and the limiting insertion groove 121 may be in a circular ring shape with matching shapes, a thread (not shown) may be disposed at a matching position of the limiting protrusion 2121 and the limiting insertion groove 121, and the limiting protrusion 2121 is screwed into the limiting insertion groove 121, so that the fixation between the body 21 and the valve body 1 may be further strengthened. Of course, the body 21 and the valve body 1 may be fixed by welding or other methods, but not limited thereto.

Further, in order to effectively prevent communication between the body 21 and the discharge passage 11 of the valve body 1, a seal disk 23 may be assembled at the second end 212 to isolate the body 21 from the valve body 1. In a preferred embodiment, a receiving groove 122 is formed in the opening of the mounting portion 12 for receiving the sealing plate 23 therein. Wherein the contour of the sealing disc 23 and the receiving groove 122 are adapted. In order to further ensure that the gas in the body 21 enters the interior of the discharge passage 11 and/or the medium in the discharge passage 11 enters the body 21, so that the pneumatic type programmable valve 100 fails during operation, at least one fourth sealing member 233 may be added to the side wall of the sealing disk 23 for contacting the receiving groove 122, so as to ensure that the body 21 and the valve body 1 are always in an isolated state. Specifically, the fourth sealing members 233 may be sealing rings, and the number of the fourth sealing members 233 may be two and spaced apart, but is not limited thereto.

A piston 22 is slidingly assembled in the body 21 and extends through the sealing disc 23 and into the valve body 1 for closing or opening the discharge channel 11. In a preferred embodiment, referring to fig. 1 to 4, the piston 22 may include a piston body 221 slidably assembled on the inner wall of the body 21, and a push rod 222 disposed in the axial direction of the piston body 221. The sidewall of the piston body 221, which is used to contact the inner wall of the body 21, is additionally provided with a first sealing element 2211, the first sealing element 2211 may be a sealing ring, the outer wall of the sealing ring is attached to the inner wall of the body 21, and the number of the sealing rings may be three, and the sealing rings are arranged at intervals, but is not limited thereto. In the body 21, the piston body 221 and the first end 211 of the piston 22 form a first intake chamber 214, and the piston body 221 and the seal disk 23 form a second intake chamber 215. In this way, it is ensured that the first intake chamber 214 and the second intake chamber 215 are isolated from each other, and the gases in the two do not permeate each other. The seal disk 23 is provided with a through slide hole 231 along the axial direction thereof, and the diameter of the slide hole 231 is equal to the diameter of the push rod 222. The push rod 222 extends through the slide hole 231 and extends from the mounting portion 12 into the valve body 1. The outer wall of the push rod 222 and the inner wall of the sliding hole 231 are both smooth wall surfaces to ensure that the push rod 222 can move up and down along the sliding hole 231. In order to further ensure that the gas in the body 21 enters the inside of the discharge passage 11 and/or the medium in the discharge passage 11 enters the body 21, so that the pneumatic program control valve 100 fails during operation, a third sealing element 232 may be additionally arranged on the inner wall of the sliding hole 231, the third sealing element 232 may be a sealing ring, the inner wall of the sealing ring is attached to the outer wall of the push rod 222, and the number of the sealing rings may be two and is spaced apart from each other, but is not limited thereto.

Further, a valve spool 223 is assembled to the free end of the push rod 222. When the cylinder 2 is started, the piston body 221 drives the push rod 222 and the valve core 223 to move up and down, so that the feed part 111 and the discharge part 112 are communicated or sealed. Specifically, a fixing portion 13 for abutting against the valve core 223 is provided at the intersection of the feeding portion 111 and the discharging portion 112. When the valve core 223 and the fixing part 13 are in a butt joint state, the feeding part 111 and the discharging part 112 are closed. The fixing portion 13 has a fixing surface 131 inclined at an angle. Correspondingly, the valve core 223 has a mating surface 2231 that mates with the stationary surface 131. Wherein, the inclination angle of the fixing surface 131 may be 90 degrees. Thus, when the space between the feeding portion 111 and the discharging portion 112 is closed, when the medium in the feeding portion 111 contacts the fixing surface 131, since the fixing surface 131 is a bent 90-degree surface, the contact tightness between the fixing surface 131 and the mating surface 2231 can be enhanced with respect to a plane, and the medium cannot easily enter the discharging portion 112 from the feeding portion 111. Further, a second seal 2232 may be added to the stationary surface 131 and/or the mating surface 2231 to further enhance the tightness of the contact between the stationary surface 131 and the mating surface 2231. Preferably, the second sealing member 2232 may be a soft rubber pad, but is not limited thereto.

Referring to fig. 1 to 4, the air inlet channel 213 is disposed inside the sidewall of the body 21, and extends from the first end 211 to the second end 212 without penetrating the second end 212. The intake passage 213 is used for connection to a gas delivery device (not shown) for charging the interior of the cylinder 2. A first intake port 216 is provided in the body 21 for communicating the intake passage 213 with the first intake chamber 214. Specifically, the first intake port 216 is provided at an end of the first intake chamber 214 remote from the piston body 221 of the piston 22. Correspondingly, a second air inlet 217 is provided in the body 21 for communicating the air inlet channel 213 with the second air inlet chamber 215. Specifically, a second inlet port 217 is provided in the second inlet chamber 215 adjacent to the seal disk 23. As such, the intake passage 213 may communicate with both the first intake port 216 and the second intake port 217. The first air inlet 216 is provided with a first solenoid valve 218 for controlling the opening or closing thereof. The second air inlet 217 is provided with a second solenoid valve 219 for controlling the opening or closing thereof. When the inlet passage 213 delivers gas into the first inlet chamber 214, the first solenoid valve 218 is opened and the second solenoid valve 219 is closed. In this manner, it is ensured that no gas is admitted into the second inlet chamber 215. The gas entering the first gas inlet chamber 214 pushes the piston body 221 to move towards the second gas inlet chamber 215, and further drives the push rod 222 and the valve core 223 to move towards the direction close to the fixing portion 13, and when the valve core 223 is abutted to the fixing portion 13, the feeding portion 111 and the discharging portion 112 are in an isolated state. Conversely, when the inlet passage 213 delivers gas into the second inlet chamber 215, the second solenoid 219 opens and the first solenoid 218 closes. In this manner, it is ensured that no gas is admitted into the first intake chamber 214. The gas in the second gas inlet chamber 215 pushes the piston body 221 to move towards the first gas inlet chamber 214, and then drives the push rod 222 and the valve core 223 to move towards the direction away from the fixing portion 13, so that the feeding portion 111 and the discharging portion 112 are in a communicated state.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. The invention is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. A pneumatic programmable valve, comprising:

a valve body having a discharge passage therein;

the cylinder comprises a body, a piston and a sealing disc; the body comprises a first end and an opposite second end, the second end is used for connecting the valve body, the sealing disc is assembled at the second end and used for preventing the body and the valve body from communicating, the piston is assembled in the body in a sliding mode, penetrates through the sealing disc and extends into the valve body, and the piston is used for plugging or opening the discharge channel;

the side wall of the body is internally provided with an air inlet channel which extends from the first end to the second end, and the air inlet channel does not penetrate through the second end; the piston and the first end form a first air inlet cavity, and the piston and the sealing disc form a second air inlet cavity; one end of the first air inlet cavity, which is far away from the piston, is provided with a first air inlet communicated with the air inlet channel, and a first electromagnetic valve for controlling the first air inlet to be opened or closed is arranged in the first air inlet; and a second air inlet communicated with the air inlet channel is arranged at the position, adjacent to the sealing disc, of the second air inlet cavity, and a second electromagnetic valve for controlling the second air inlet to be opened or closed is arranged in the second air inlet.

2. The pneumatic programmable valve of claim 1, wherein the discharge channel comprises an inlet portion and an outlet portion in communication with each other and the valve body has a mounting portion for connecting the second end.

3. The pneumatic programmable valve as claimed in claim 2, wherein the outer edge of the second end is provided with a limiting protrusion, and the outer edge of the mounting part is provided with a limiting slot matched with the limiting protrusion; the limiting protrusion and the limiting slot are in inserted fit with each other so as to assemble the body on the valve body.

4. The pneumatic programmable valve as claimed in claim 3, wherein the matching part of the limiting protrusion and the limiting slot is provided with a thread, and the limiting protrusion is screwed into the limiting slot.

5. The pneumatic programmable valve according to claim 2, wherein the piston comprises a piston body slidably assembled on the inner wall of the piston body and a push rod arranged in the axial direction of the piston body; and

the sealing disc is provided with a through sliding hole along the axial direction, and the push rod penetrates through the sliding hole and extends into the valve body from the mounting part.

6. The pneumatic programmable valve of claim 5, wherein the side wall of the piston body for engaging the inner wall of the body is provided with a first seal.

7. The pneumatic programmable valve according to claim 5, characterized in that a valve core is assembled at the free end of the push rod; when the cylinder is started, the piston body drives the push rod and the valve core to move up and down, so that the feeding part and the discharging part are communicated or sealed.

8. The pneumatic program control valve as claimed in claim 7, wherein a fixing portion for abutting against the valve core is provided at the intersection of the feeding portion and the discharging portion, and the fixing portion has a fixing surface inclined at an angle; and the valve core is provided with a matching surface matched with the fixing surface.

9. The pneumatic programmable valve of claim 8, wherein the stationary surface and/or the mating surface is provided with a second seal.

10. The pneumatic programmable valve of claim 8, wherein the angle of inclination of the fixed surface is 90 degrees.

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