CN219282531U - Pneumatic stop valve - Google Patents
Pneumatic stop valve Download PDFInfo
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- CN219282531U CN219282531U CN202223395495.1U CN202223395495U CN219282531U CN 219282531 U CN219282531 U CN 219282531U CN 202223395495 U CN202223395495 U CN 202223395495U CN 219282531 U CN219282531 U CN 219282531U
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- valve rod
- valve body
- transmission cavity
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Abstract
The utility model provides a pneumatic stop valve, includes executor, valve gap, valve rod and valve body, the one end and the executor of valve rod are connected, the other end of valve rod passes the valve gap and stretches into the valve body and carry out on-off control to the valve body inside, the executor includes executor shell, piston and spring, form the transmission chamber in the executor shell, piston and spring all set up in the transmission chamber, the one end of valve rod stretches into transmission chamber and piston connection, set up the air inlet on the executor shell, one side of executor shell sets up the air supply, the air inlet communicates with the air supply, the air supply is inflated to drive the piston through the air inlet and is reciprocated in the transmission chamber, and the sealing washer is compressed tightly gradually by the valve gap seal end of valve gap at the in-process of valve gap spiral shell to reach sealed effect, thereby such structural design can avoid the medium to flow along the screw gap between valve gap and the valve body to pollute the medium inside the valve body.
Description
Technical Field
The utility model relates to the technical field of stop valves, in particular to a pneumatic stop valve.
Background
In the existing stop valve, a sealing ring between a valve cover and a valve body is usually arranged at the top end of the valve body, the valve cover is in threaded connection with the valve body and then presses the sealing ring at the top end of the valve body, and a medium in the valve body can flow out from a use part of a channel in the valve body, which is used for corroding the valve body along threads between the valve body and the valve cover, so that corroded liquid can enter the valve body again to pollute the medium in the valve body.
Disclosure of Invention
In view of this, the present utility model provides a pneumatic shut-off valve.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides a pneumatic stop valve, includes executor, valve gap, valve rod and valve body, the one end and the executor of valve rod are connected, the other end of valve rod passes the valve gap and stretches into the valve body and carry out on-off control in the valve body, its characterized in that: the actuator comprises an actuator shell, a piston and a spring, wherein a transmission cavity is formed in the actuator shell, the piston and the spring are arranged in the transmission cavity, one end of a valve rod extends into the transmission cavity to be connected with the piston, an air inlet is formed in the actuator shell, an air source is arranged on one side of the actuator shell and communicated with the air source, and the air source charges air in the transmission cavity through the air inlet to drive the piston to move up and down.
Preferably, the spring is arranged at the top end of the piston, two ends of the spring respectively prop against the top wall of the piston and the top wall of the transmission cavity, one end of the valve rod penetrates through the piston, an inner sealing ring is arranged between the valve rod and the piston, and an outer sealing ring is arranged between the piston and the cavity wall of the transmission cavity.
Preferably, an anti-fouling sealing structure is arranged between the valve cover and the valve body, the anti-fouling sealing structure comprises a sealing element mounting end formed by protruding on the inner wall of the valve cover, the sealing element mounting end is arranged on the inner wall of the valve body, a compression sealing ring is arranged on the sealing element mounting end, and one end of the valve cover extends into the valve body to compress and fix the compression sealing ring.
Preferably, the air inlet is arranged at the lower part of the actuator shell, and the detachable air nozzle is arranged on the air inlet.
Preferably, two air inlets are arranged, and the air inlets are respectively communicated with the part of the transmission cavity, which is positioned at the upper part of the piston, and the part of the transmission cavity, which is positioned at the lower part of the piston.
Preferably, a valve rod channel is formed in the valve cover, one end of the valve rod penetrates through the valve rod channel to extend into the valve body, the valve rod comprises a valve rod body and a transmission connecting piece, the valve rod body is provided with a rod body portion and a valve core portion, the valve core portion extends into the valve body to control on-off of the valve body, the transmission connecting piece is arranged at the top end of the valve rod, a guide shaft sleeve is sleeved on the portion, located in the valve rod channel, of the transmission connecting piece, and a lower sealing ring is sleeved on the rod body portion.
Preferably, sealing elements are arranged between the guide shaft sleeve and the inner walls of the transmission connecting piece and the valve cover, a lower spring is arranged between the guide shaft sleeve and the lower sealing ring, and two ends of the lower spring correspondingly support against the guide shaft sleeve and the lower sealing ring.
The utility model has the beneficial effects that: compared with the sealing ring in the center of the prior art, which is arranged at the top end of the valve body, the sealing ring is tightly pressed by the valve cover to seal after the valve cover is completely screwed, and the sealing ring in the design is gradually tightly pressed by the sealing end of the valve cover in the screwing process of the valve cover, so that the sealing effect is achieved, and the structural design can prevent medium from flowing out along a thread gap between the valve cover and the valve body to pollute the medium in the valve body.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the structure of the present utility model in a normally closed state;
FIG. 2 is another angular cross-sectional view of FIG. 1;
FIG. 3 is a schematic view of the structure of the utility model in a normally open state;
FIG. 4 is another angular cross-sectional view of FIG. 3;
FIG. 5 is a schematic view of the structure of the present utility model in the air-open state;
fig. 6 is another angular cross-sectional view of fig. 5.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model will be further described with reference to the drawings.
The utility model provides the following technical scheme:
as shown in fig. 1-6, the utility model discloses a pneumatic stop valve, which comprises an actuator 1, a valve cover 2, a valve rod 3 and a valve body 4, wherein one end of the valve rod 3 is connected with the actuator 1, and the other end of the valve rod 3 penetrates through the valve cover 2 and stretches into the valve body 4 to control on-off of the interior of the valve body 4, and is characterized in that: the actuator 1 comprises an actuator housing 5, a piston 6 and a spring 7, wherein a transmission cavity 8 is formed in the actuator housing 5, the piston 6 and the spring 7 are arranged in the transmission cavity 8, one end of the valve rod 3 stretches into the transmission cavity 8 to be connected with the piston 6, an air inlet 9 is arranged on the actuator housing 5, an air source (not shown) is arranged on one side of the actuator housing 5, the air inlet 9 is communicated with the air source, and the air source charges air in the transmission cavity 8 through the air inlet 9 to drive the piston 6 to move up and down. Specifically, this design compares in the sealing washer setting at valve body 4 top at prior art center, and valve gap 2 just compresses tightly sealing washer 13 and seals after the complete screw-on, and the sealing washer in this design is compressed tightly gradually by the valve gap 2 seal end of valve gap 2 at the in-process that valve gap 2 was screwed-on to reach sealed effect, thereby such structural design can avoid the medium to flow along the screw thread gap between valve gap 2 and valve body 4 and pollute the medium inside valve body 4.
Further, the spring 7 is disposed at the top end of the piston 6, two ends of the spring 7 respectively prop against top walls of the piston 6 and the transmission cavity 8, one end of the valve rod 3 penetrates through the piston 6, an inner sealing ring 10 is disposed between the valve rod 3 and the piston 6, and an outer sealing ring 11 is disposed between the piston 6 and the cavity wall of the transmission cavity 8.
Further, an anti-fouling sealing structure is arranged between the valve cover 2 and the valve body 4, the anti-fouling sealing structure comprises a sealing element installation end 12 formed by protruding on the inner wall of the valve cover 2, the sealing element installation end 12 is arranged on the inner wall of the valve body 4, a compression sealing ring 13 is arranged on the sealing element installation end 12, and one end of the valve cover 2 stretches into the valve body 4 to compress and fix the compression sealing ring 13.
Further, the air inlet 9 is arranged at the lower part of the actuator housing 5, the detachable air tap 14 is arranged on the air inlet 9, two air inlets 14 are arranged, and the air inlets are respectively communicated with the part of the transmission cavity, which is positioned at the upper part of the piston, and the part of the transmission cavity, which is positioned at the lower part of the piston.
Further, a valve rod channel 15 is formed in the valve cover 2, one end of the valve rod 3 penetrates through the valve rod channel 15 and stretches into the valve body 4, the valve rod 3 comprises a valve rod body 16 and a transmission connecting piece 17, the valve rod body 16 is provided with a rod body portion 18 and a valve core portion 19, the valve core portion 19 stretches into the valve body 4 to control on-off of the valve body 4, the transmission connecting piece 17 is arranged at the top end of the valve rod 3, a guide shaft sleeve 20 is sleeved on the portion, located in the valve rod channel 15, of the transmission connecting piece 17, and a lower sealing ring 23 is sleeved on the rod body portion 18.
Further, sealing elements 21 are arranged between the guide shaft sleeve 20 and the inner walls of the transmission connecting piece 17 and the valve cover 2, a lower spring 22 is arranged between the guide shaft sleeve 20 and the lower sealing ring, two ends of the lower spring 22 correspondingly support against the guide shaft sleeve 20 and the lower sealing ring 23, and specifically, the lower sealing ring can be compensated by arranging the lower spring, so that abrasion is reduced.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. The utility model provides a pneumatic stop valve, includes executor, valve gap, valve rod and valve body, the one end and the executor of valve rod are connected, the other end of valve rod passes the valve gap and stretches into the valve body and carry out on-off control in the valve body, its characterized in that: the actuator comprises an actuator shell, a piston and a spring, wherein a transmission cavity is formed in the actuator shell, the piston and the spring are arranged in the transmission cavity, one end of a valve rod extends into the transmission cavity to be connected with the piston, an air inlet is formed in the actuator shell, an air source is arranged on one side of the actuator shell and communicated with the air source, and the air source charges air in the transmission cavity through the air inlet to drive the piston to move up and down.
2. The pneumatic shut-off valve of claim 1, wherein: the spring is arranged at the top end of the piston, two ends of the spring respectively prop against the top wall of the piston and the top wall of the transmission cavity, one end of the valve rod penetrates through the piston, an inner sealing ring is arranged between the valve rod and the piston, and an outer sealing ring is arranged between the piston and the cavity wall of the transmission cavity.
3. The pneumatic shut-off valve of claim 1, wherein: an anti-fouling sealing structure is arranged between the valve cover and the valve body and comprises a sealing element mounting end formed by protruding on the inner wall of the valve cover, the sealing element mounting end is arranged on the inner wall of the valve body, a compression sealing ring is arranged on the sealing element mounting end, and one end of the valve cover stretches into the valve body to compress and fix the compression sealing ring.
4. The pneumatic shut-off valve of claim 1, wherein: the air inlet is arranged at the lower part of the actuator shell, and the detachable air tap is arranged on the air inlet.
5. The pneumatic shut-off valve of claim 1, wherein: the two air inlets are respectively communicated with the part of the transmission cavity, which is positioned at the upper part of the piston, and the part of the transmission cavity, which is positioned at the lower part of the piston.
6. The pneumatic shut-off valve of claim 1, wherein: offer the valve rod passageway on the valve gap, the one end of valve rod passes the valve rod passageway and stretches into inside the valve body, the valve rod includes valve rod body and drive connection spare, the valve rod body has body of rod portion and case portion, case portion stretches into inside break-make to the valve body inside of valve body control, drive connection spare sets up on the valve rod top, drive connection spare is located the cover and establishes the guiding axle sleeve on the part of valve rod passageway, the cover is established down the sealing washer on the body of rod portion.
7. The pneumatic shut-off valve of claim 6, wherein: sealing elements are arranged between the guide shaft sleeve and the inner walls of the transmission connecting piece and the valve cover, a lower spring is arranged between the guide shaft sleeve and the lower sealing ring, and two ends of the lower spring correspondingly prop against the guide shaft sleeve and the lower sealing ring.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223154656 | 2022-11-25 | ||
| CN2022231546568 | 2022-11-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219282531U true CN219282531U (en) | 2023-06-30 |
Family
ID=86921714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223395495.1U Active CN219282531U (en) | 2022-11-25 | 2022-12-16 | Pneumatic stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219282531U (en) |
-
2022
- 2022-12-16 CN CN202223395495.1U patent/CN219282531U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |