CN212960119U - Pneumatic stop valve - Google Patents
Pneumatic stop valve Download PDFInfo
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- CN212960119U CN212960119U CN202021097684.9U CN202021097684U CN212960119U CN 212960119 U CN212960119 U CN 212960119U CN 202021097684 U CN202021097684 U CN 202021097684U CN 212960119 U CN212960119 U CN 212960119U
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- end cover
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- main valve
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Abstract
The utility model discloses a pneumatic stop valve, which comprises a pneumatic execution part and a main valve part, wherein the pneumatic execution part comprises a front end cover and a rear end cover which are detachably connected, a piston which can slide along the axial direction of the rear end cover is assembled in the rear end cover, and the piston is provided with a piston rod; the main valve portion is including dismantling the main valve body of connecting in the front end housing and keeping away from rear end cap one end, the one end of keeping away from the front end housing in the main valve body can be dismantled and be connected with the valve mouth, the axis that the piston rod followed the piston passes front end housing and main valve body in proper order and stretches to the seal port of valve mouth, construct gas port A and the gas port B with the inside cavity intercommunication of rear end housing on front end housing and rear end cap respectively, the export of gas port A and gas port B is located the axial both ends department of piston respectively, construct the valve import on the main valve body, the cover is equipped with sealing washer and guidance tape on the global of. The utility model discloses piston rod and sealing port are sealed firmly, do not have wearing and tearing, and piston installation sealing washer and guidance tape make the sealed guide performance of piston better, are applicable to the technical field of control fluid medium break-make.
Description
Technical Field
The utility model belongs to the valve body field of control fluid medium break-make, specifically speaking relates to a pneumatic stop valve.
Background
At present, in the injection process of fluid media capable of flowing in an extruding way, the fluid media are in a flowing state in a valve body, and the fluid media are often leaked due to poor rationality of the whole structure of the valve body; in addition, the power source for controlling the opening and closing of the valve body is compressed air, and in the process of driving the components in the valve body to move, all the components of the valve body are in a high-pressure environment, so that partial compressed air leakage often occurs, the opening of a channel in the valve cavity is incomplete, the medium circulation is not smooth, or the channel in the valve cavity is not closed tightly, and when the valve cavity is positioned at a closing station, the fluid medium leaks, so that the whole valve body fails.
SUMMERY OF THE UTILITY MODEL
The utility model provides a pneumatic stop valve that compressed air that effective control passageway break-make, medium circulation are smooth and avoid fluid medium, drive to use leaks.
In order to achieve the above object, the utility model adopts the following technical scheme:
a pneumatic stop valve comprises a pneumatic execution part and a main valve part, wherein the pneumatic execution part comprises a front end cover and a rear end cover which are detachably connected, a piston which can slide along the axial direction of the rear end cover is assembled in the rear end cover, and a piston rod is installed on the piston; the main valve part comprises a main valve body which is detachably connected with one end of the front end cover far away from the rear end cover, one end of the main valve body far away from the front end cover is detachably connected with a valve nozzle, the piston rod sequentially penetrates through the front end cover and the main valve body along the axis of the piston and extends to the sealing port of the valve nozzle, a valve sleeve is detachably connected at one end of the main valve body close to the front end cover, the piston rod extends into the main valve body through the valve sleeve, at least one sealing ring B is embedded at the joint of the valve sleeve and the piston rod, a gas port A and a gas port B which are communicated with the inner cavity of the rear end cover are respectively constructed on the front end cover and the rear end cover, outlets of the air port A and the air port B are respectively positioned at two axial ends of the piston, a valve inlet is formed in the main valve body, a sealing ring C and a guide belt are sleeved on the circumferential surface of the piston, a magnetic ring is sleeved on the piston, and a magnetic induction switch used for inducing the position of the magnetic ring is installed on the outer side of the rear end cover.
Furthermore, a spring which can deform along the motion direction of the piston is fixed between one end of the piston, which is far away from the front end cover, and the end surface of the piston, which is close to the front end cover, of the rear end cover.
Furthermore, a sealing nozzle is arranged between the valve nozzle and the front end cover, the sealing nozzle is assembled in the valve nozzle, the valve nozzle is in threaded connection with the main valve body, the end part of the main valve body abuts against the sealing nozzle, and one end, close to the main valve body, of the sealing nozzle forms a sealing opening of the valve nozzle.
Furthermore, a sealing ring A is embedded at the joint of the piston rod and the front end cover.
Furthermore, a guide pad is embedded between the valve sleeve and the piston rod, a compression joint is connected to one end of the valve sleeve close to the rear end cover in a threaded manner, and the compression joint is pressed on the guide pad.
Furthermore, the end surface of the piston rod close to the sealing opening of the valve nozzle is an arc surface.
The utility model discloses owing to adopted foretell structure, it compares with prior art, and the technical progress who gains lies in: when the valve nozzle needs to be opened, compressed air enters the front end cover from the air port A and pushes the piston to move in the direction away from the valve nozzle, and the piston drives the piston rod to move so as to open the sealing port of the valve nozzle blocked by the end part of the piston rod, so that the inlet of the fluid medium valve is injected into a target object through the valve outlet; when the valve nozzle needs to be closed, compressed air enters the rear end cover from the air port B and pushes the piston to move towards the direction of the valve nozzle, and the piston drives the piston rod to move so that the end part of the piston rod blocks the valve nozzle; the utility model drives the piston to move back and forth by compressed gas, thereby driving the piston rod to move back and forth, achieving the function of connecting or disconnecting the valve inlet and the valve outlet, because the piston rod is fixed along the axis of the piston, and the reciprocating motion of the piston is accurate, the piston drives the motion of the piston rod to be the motion along the axis, thus the accuracy is high, the piston rod can not be deflected or deformed, and the valve mouth can not be sealed; and the piston is sleeved with a magnetic ring, the outer side of the rear end cover is provided with a magnetic induction switch, and the on-off state of the stop valve is fed back by sensing the position of the magnetic ring, so that the on-off of the stop valve is accurately controlled.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.
In the drawings:
FIG. 1 is a cross-sectional view of an embodiment of the present invention;
FIG. 2 is an enlarged view of portion E of FIG. 1;
fig. 3 is a schematic structural diagram of an embodiment of the present invention.
Labeling components: 1-front end cover, 101-air port A, 2-rear end cover, 201-air port B, 3-main valve body, 301-inlet cavity, 302-valve inlet, 4-valve nozzle, 401-valve outlet, 5-piston, 501-guide belt, 502-sealing ring C, 503-magnetic ring, 6-spring, 7-piston rod, 701-arc surface, 8-sealing nozzle, 801-channel, 9-valve sleeve, 10-pressing joint, 1001-sealing ring B, 1002-guide pad and 1003-sealing ring A.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for purposes of illustration and explanation only and are not intended to limit the invention.
The utility model discloses a pneumatic stop valve, as shown in figures 1-3, comprising a pneumatic execution part and a main valve part, wherein the pneumatic execution part comprises a front end cover 1, a rear end cover 2, a piston 5 and a piston rod 7; the main valve part comprises a main valve body 3 and a valve nozzle 4, wherein the main valve body 3 and the rear end cover 2 are respectively detachably mounted at two axial ends of the front end cover 1 and are respectively fastened together through bolts, and the valve nozzle 4 is in threaded connection with one end, far away from the front end cover 1, of the main valve body 3. The rear end cover 2 is buckled on the front end cover 1, a piston cavity is formed between a hollow inner cavity of the rear end cover 2 and the corresponding end of the front end cover 1, the piston 5 is assembled in the piston cavity and can slide along the axis of the rear end cover 2, the piston rod 7 is installed on the piston 5, the piston rod 7 sequentially penetrates through the front end cover 1 and the main valve body 3 and is close to the sealing opening of the valve nozzle 4, and the piston rod 7 is overlapped with the axis of the piston 5. The front end cover 1 and the rear end cover 2 are respectively provided with an air port A101 and an air port B201 which are communicated with the cavity of the piston 5 of the rear end cover 2, and outlets of the air port A101 and the air port B201 are respectively positioned at two axial ends of the piston 5. The main valve body 3 is provided with an inlet cavity 301, the main valve body 3 is provided with a valve inlet 302, the valve inlet 302 is communicated with the inlet cavity 301, the inlet cavity 301 is communicated with a valve outlet 401, and the piston rod 7 is driven to open or close the communication position of the inlet cavity 301 and the valve outlet 401. The utility model discloses a theory of operation does: when the valve nozzle 4 needs to be opened, compressed air enters the front end cover 1 through the air port A101 and pushes the piston 5 to move in the direction away from the valve nozzle 4, the piston 5 drives the piston rod 7 to move, so that a sealing port of the valve nozzle 4 blocked by the end part of the piston rod 7 is opened, and thus, the fluid medium valve inlet 302 is injected into a target object through the inlet cavity 301 and the valve outlet 401; when the valve nozzle 4 needs to be closed, compressed air enters the rear end cover 2 through the air port B201 and pushes the piston 5 to move towards the valve nozzle 4, and the piston 5 drives the piston rod 7 to move, so that the end of the piston rod 7 is blocked by the valve nozzle 4. The utility model has the advantages that: the valve nozzle 4 is opened or closed by adopting the form of driving the piston 5 and the piston rod 7 by compressed air, because the piston rod 7 is fixed along the axis of the piston 5, the reciprocating motion of the piston 5 is accurate, the piston 5 drives the piston rod 7 to move along the axis of the piston, and the axes of the piston and the piston are overlapped, the precision is high, the piston rod 7 cannot be deflected or deformed, and the valve nozzle 4 cannot be sealed.
As a preferred embodiment of the present invention, a spring 6 is installed in the cavity of the piston 5, which is used to assist the reciprocating motion of the piston 5, and the setting position is: between one end of the piston 5 far from the front end cover 1 and the end face of the rear end cover 2 close to the front end cover, two ends of the spring 6 are respectively abutted against the two end parts, and the spring 6 is always in a compressed state, namely, an elastic jacking force is always provided for the piston 5.
As a preferred embodiment of the present invention, the circumferential surface of the piston 5 is sleeved with a guide belt 501, when the piston 5 reciprocates, the guide belt 501 slides in contact with the inner wall of the piston cavity, the guide belt 501 acts as a guide, and the piston 5 is prevented from deflecting during the motion process, resulting in an internal scratch or causing the piston rod 7 to deflect, and failing to seal the valve outlet 401. The piston 5 is further sleeved with a sealing ring C502, and the sealing ring C502 is used for preventing compressed air from entering the other end from one end of the piston 5 through the peripheral wall of the piston 5, so that the piston 5 drives the piston rod 7 to be incapable of completely opening or closing the valve outlet 401. A magnetic ring 503 sleeved on the piston 5 is arranged between the guide belt 501 and the sealing ring C502, a magnetic induction switch is arranged on the outer side of the rear end cover 2, and the on-off state of the stop valve is fed back through the position of the magnetic induction ring 503. In the embodiment, a sealing ring a1003 is embedded at the joint of the piston rod 7 and the front end cover 1, and the sealing ring a1003 is used for preventing compressed air entering the cavity of the piston 5 from the air port a101 from entering the front end cover 1 or preventing the compressed air from leaking from the front end cover 1.
As a preferred embodiment of the present invention, a sealing nozzle 8 is disposed between the valve nozzle 4 and the main valve body 3, the sealing nozzle 8 is assembled in the valve nozzle 4, the valve nozzle 4 is connected with the main valve body 3 by a screw thread, and the end of the main valve body 3 abuts against the sealing nozzle 8, and one end of the sealing nozzle 8 close to the main valve body 3 constitutes a sealing opening of the valve nozzle 4. The middle of the sealing mouth 8 is configured as a channel 801, through which channel 801 the inlet chamber 301 communicates with the valve outlet 401. The sealing mouth 8 is used for sealing the joint of the valve mouth 4 and the main valve body 3.
As a preferred embodiment of the present invention, there is a valve sleeve 9 at one end of the main valve body 3 close to the front end cover 1, the piston rod 7 extends into the main valve body 3 through the valve sleeve 9, at least one sealing ring B1001 is embedded at the joint of the valve sleeve 9 and the piston rod 7, the sealing rings B1001 of the present embodiment are two, the sealing ring B1001 far away from the piston 5 seals the corresponding end of the inlet cavity 301, and the purpose is to avoid the fluid medium from leaking from the inlet cavity 301 from the end of the main valve body 3 close to the piston 5. In order to further limit the movement direction of the piston rod 7, make the movement direction accurate, and improve the sealing effect of the outlet end, a guide pad 1002 is further sleeved between the valve sleeve 9 and the piston rod 7, the guide pad 1002 is a tetrafluoro pad, a compression joint 10 is connected to one end of the valve sleeve 9 close to the rear end cover 2 through a thread, and the compression joint 10 is pressed against the guide pad 1002. In order to improve the sealing of the piston rod 7 to the valve outlet 401, the end surface of the piston rod 7 near the sealing opening of the valve nozzle 4 is configured as a circular arc surface 701, and the surface of the corresponding end of the sealing nozzle 8 contacting the piston rod 7 is configured as a matched circular arc surface.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the protection of the claims of the present invention.
Claims (6)
1. A pneumatic stop valve characterized by: the pneumatic actuator comprises a pneumatic actuator and a main valve part, wherein the pneumatic actuator comprises a front end cover and a rear end cover which are detachably connected, a piston which can slide along the axial direction of the rear end cover is assembled in the rear end cover, and a piston rod is arranged on the piston; the main valve part comprises a main valve body which is detachably connected with one end of the front end cover far away from the rear end cover, one end of the main valve body far away from the front end cover is detachably connected with a valve nozzle, the piston rod sequentially penetrates through the front end cover and the main valve body along the axis of the piston and extends to the sealing port of the valve nozzle, a valve sleeve is detachably connected at one end of the main valve body close to the front end cover, the piston rod extends into the main valve body through the valve sleeve, at least one sealing ring B is embedded at the joint of the valve sleeve and the piston rod, a gas port A and a gas port B which are communicated with the inner cavity of the rear end cover are respectively constructed on the front end cover and the rear end cover, outlets of the air port A and the air port B are respectively positioned at two axial ends of the piston, a valve inlet is formed in the main valve body, a sealing ring C and a guide belt are sleeved on the circumferential surface of the piston, a magnetic ring is sleeved on the piston, and a magnetic induction switch used for inducing the position of the magnetic ring is installed on the outer side of the rear end cover.
2. A pneumatic stop valve as defined in claim 1, wherein: and a spring which can deform along the motion direction of the piston is fixed between one end of the piston, which is far away from the front end cover, and the end surface of the piston, which is close to the front end cover, of the rear end cover.
3. A pneumatic stop valve as defined in claim 1, wherein: and a sealing nozzle is arranged between the valve nozzle and the front end cover, the sealing nozzle is assembled in the valve nozzle, the valve nozzle is in threaded connection with the main valve body, the end part of the main valve body is abutted against the sealing nozzle, and one end of the sealing nozzle, which is close to the main valve body, forms a sealing opening of the valve nozzle.
4. A pneumatic stop valve as defined in claim 1, wherein: and a sealing ring A is embedded at the joint of the piston rod and the front end cover.
5. A pneumatic stop valve as defined in claim 1, wherein: a guide pad is also embedded between the valve sleeve and the piston rod, a compression joint is connected to one end of the valve sleeve close to the rear end cover in a threaded manner, and the compression joint is pressed against the guide pad.
6. A pneumatic stop valve as defined in claim 1, wherein: the end face of the piston rod, which is close to the sealing opening of the valve nozzle, is an arc surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021097684.9U CN212960119U (en) | 2020-06-15 | 2020-06-15 | Pneumatic stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021097684.9U CN212960119U (en) | 2020-06-15 | 2020-06-15 | Pneumatic stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212960119U true CN212960119U (en) | 2021-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021097684.9U Active CN212960119U (en) | 2020-06-15 | 2020-06-15 | Pneumatic stop valve |
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| Country | Link |
|---|---|
| CN (1) | CN212960119U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114576545A (en) * | 2022-03-11 | 2022-06-03 | 凯迈（洛阳）气源有限公司 | Gas cylinder based on pneumatic type signal feedback |
-
2020
- 2020-06-15 CN CN202021097684.9U patent/CN212960119U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114576545A (en) * | 2022-03-11 | 2022-06-03 | 凯迈（洛阳）气源有限公司 | Gas cylinder based on pneumatic type signal feedback |
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