CN215371065U - Pneumatic cut-off valve - Google Patents
Pneumatic cut-off valve Download PDFInfo
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- CN215371065U CN215371065U CN202120832856.0U CN202120832856U CN215371065U CN 215371065 U CN215371065 U CN 215371065U CN 202120832856 U CN202120832856 U CN 202120832856U CN 215371065 U CN215371065 U CN 215371065U
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- valve
- packing
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- wall
- valve rod
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Abstract
The utility model discloses a pneumatic cut-off valve which comprises a valve body, a ball body, a valve rod and a pneumatic actuator, wherein a valve seat is arranged in the valve body, the ball body is arranged on the valve seat in a rotatable fit mode, an installation opening is formed in the valve body, a gland is arranged above the installation opening, the valve rod is arranged in the installation opening, one end of the valve rod is connected with the ball body, the other end of the valve rod is connected with the pneumatic actuator arranged outside the valve body through extending out of the gland, a first annular convex block is arranged on the inner wall of the installation opening, a second annular convex block clamped below the first annular convex block is arranged on the outer wall of the valve rod, a packing groove is formed by matching the valve rod and the inner wall of the installation opening at a position above the first annular convex block, packing is filled in the packing groove, and a compression ring packing is arranged above the packing.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to a pneumatic stop valve.
Background
The pneumatic cut-off valve is also called as a pneumatic cut-off valve, is one of actuating mechanisms in an automatic system, is used for controlling the cut-off, the connection or the switching of fluid in a process pipeline, has the characteristics of simple structure, sensitive response, reliable action and the like, and is widely applied to industrial production departments such as petroleum, chemical industry, metallurgy, medicine and the like.
The sealing structure of the joint of the valve rod and the valve body on the traditional pneumatic stop valve is simple, leakage is easy to occur in the use process, and the use effect is poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a pneumatic stop valve which is good in sealing performance, good in using effect and capable of preventing gas and liquid from leaking.
A pneumatic cut-off valve comprises a valve body, a ball body, a valve rod and a pneumatic actuator, wherein a valve seat is arranged in the valve body, the ball body is arranged on the valve seat in a rotatable matching mode, an installation opening is formed in the valve body, a gland is arranged above the installation opening, the valve rod is arranged in the installation opening, one end of the valve rod is connected with the ball body, the other end of the valve rod is connected with the pneumatic actuator arranged outside the valve body through extending out of the gland, a first annular convex block is arranged on the inner wall of the installation opening, a second annular convex block used for being clamped below the first annular convex block is arranged on the outer wall of the valve rod, a packing groove is formed by matching the valve rod and the inner wall of the installation opening at a position above the first annular convex block, packing is filled in the packing groove, a packing pressing ring is arranged above the packing, and a pressing part used for pressing the packing ring is arranged on the bottom surface of the gland, the improved valve is characterized in that sliding grooves extending to the top end of the mounting opening are formed in two sides of the packing groove, a clamping groove is formed in one side of each sliding groove, first clamping blocks are arranged on two sides of the packing pressing ring, a second clamping block is arranged at the bottom end of the pressing portion, and the pressing cover is locked on the valve body through a first bolt.
Preferably, the bottom of the gland is provided with an annular sealing strip, the valve body is provided with an annular sealing groove for accommodating the annular sealing strip, and the outside of the sealing strip is wrapped with an elastic rubber ring.
Preferably, the clamping joint of the first annular bump and the second annular bump is provided with an L-shaped wear pad.
Preferably, the outer wall of the packing compression ring is provided with a sealing ring.
Preferably, the inner wall and the outer wall of pressing the portion all are equipped with O shape circle, the gland inner wall is equipped with the dust ring, just the dust ring extends to press the portion.
Preferably, the joints of the valve rod, the ball body and the valve body are provided with static eliminating devices.
Preferably, the valve body comprises a left valve body and a right valve body, and the left valve body and the right valve body are connected through a second bolt.
After adopting the technical scheme, compared with the background technology, the utility model has the following advantages:
according to the pneumatic stop valve, the packing is filled in the packing groove formed by the valve rod and the valve body, the packing is tightly pressed by the packing pressing ring and then locked by the pressing cover, the sliding grooves are formed in the two sides of the packing groove, the packing pressing ring and the clamping blocks on the pressing cover are rotationally clamped into the clamping grooves in one side of the sliding grooves after sliding into the sliding grooves, the pressing effect is good, the sealing ring is arranged on the outer wall of the packing pressing ring, the pressing cover is provided with the O-shaped ring and the dust ring, the multi-layer sealing structure is matched, the sealing performance is good, gas and liquid are prevented from leaking, and the using effect is good.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a partial enlarged view of a portion a of FIG. 1 according to the present invention;
fig. 3 is a top view of the packing ring structure of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
In the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are all based on the orientation or positional relationship shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the apparatus or element of the present invention must have a specific orientation, and thus, should not be construed as limiting the present invention.
Examples
Referring to fig. 1, 2 and 3, the utility model discloses a pneumatic cut-off valve, which comprises a valve body 1, a ball body 2, a valve rod 3 and a pneumatic actuator 4, wherein a valve seat 11 is arranged in the valve body 1, the ball body 2 is rotatably arranged on the valve seat 11 in a matching manner, a mounting port 12 is arranged on the valve body 1, a gland 5 is arranged above the mounting port 12, the valve rod 3 is rotatably arranged in the mounting port 12, one end of the valve rod is connected with the ball body 2, the other end of the valve rod is connected with a pneumatic actuator 4 device arranged outside the valve body 3 through extending out of the gland 5, a first annular bump 121 is arranged on the inner wall of the mounting port 12, a second annular bump 31 clamped below the first annular bump 121 is arranged on the outer wall of the valve rod 3 to prevent the valve rod 3 from sliding out of the mounting port 12, a packing groove 13 is formed on the inner walls of the valve rod 3 and the mounting port 12 at a position above the first annular bump 121, the packing 14 is filled in the packing groove 13, 14 tops of packing are equipped with packing clamping ring 15, 5 bottom surfaces of gland are equipped with and are used for pressing the splenium 51 of pressing of packing clamping ring 15, packing groove 13 both sides are equipped with the spout 16 that extends to the installing port top, spout 16 bottom one side is equipped with draw-in groove 17, 15 both sides of packing clamping ring are equipped with first fixture block 151, it is equipped with second fixture block 511 to press the splenium 51 bottom, first fixture block 151 on the packing clamping ring 15 and the second fixture block 511 on the gland 5 pass through spout 16 and slide in the back, rotate the draw-in groove 17 of going into spout 16 one side, it is effectual to compress tightly, gland 5 is locked on valve body 1 through first bolt 52.
The bottom of the gland 5 is provided with an annular sealing strip 53, the valve body 1 is provided with an annular sealing groove 18 for accommodating the annular sealing strip 53, and the outside of the sealing strip 53 is wrapped with an elastic rubber ring.
The clamping joint of the first annular bump 121 and the second annular bump 31 is provided with an L-shaped wear pad 19.
Packing clamping ring 15 outer wall is equipped with sealing washer 152, and the inner wall and the outer wall of pressing the portion 51 all are equipped with O shape circle 54, and gland 51 inner wall is equipped with dust ring 55, and dust ring 55 extends to pressing the portion 51.
The joints of the valve rod 3, the ball body 2 and the valve body 1 are provided with static eliminating devices 6. The valve body 1 comprises a left valve body and a right valve body which are connected through a second bolt 7.
The valve body 1 is provided with a bracket 8, and the pneumatic actuator 4 is connected with the valve rod 3 through a driving shaft 41.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. The utility model provides a pneumatic trip valve, includes valve body, spheroid, valve rod and pneumatic actuator, its characterized in that: a valve seat is arranged in the valve body, the ball body is arranged on the valve seat in a rotatable fit manner, a mounting opening is formed in the valve body, a gland is arranged above the mounting opening, the valve rod is arranged in the mounting opening, one end of the valve rod is connected with the ball body, the other end of the valve rod is connected with the pneumatic actuator arranged outside the valve body through extending out of the gland, a first annular bump is arranged on the inner wall of the mounting opening, a second annular bump clamped below the first annular bump is arranged on the outer wall of the valve rod, a packing groove is formed by matching the valve rod and the inner wall of the mounting opening at a position above the first annular bump, packing is filled in the packing groove, a packing press ring is arranged above the packing, a press part for pressing the packing press ring is arranged on the bottom surface of the gland, and sliding grooves extending to the top end of the mounting opening are formed on two sides of the packing groove, the improved packing press is characterized in that a clamping groove is formed in one side of the sliding groove, first clamping blocks are arranged on two sides of the packing press ring, a second clamping block is arranged at the bottom end of the press portion, and the press cover is locked on the valve body through a first bolt.
2. A pneumatic shut-off valve as defined in claim 1 wherein: the bottom of the gland is provided with an annular sealing strip, the valve body is provided with an annular sealing groove for containing the annular sealing strip, and the outside of the sealing strip is wrapped with an elastic rubber ring.
3. A pneumatic shut-off valve as defined in claim 1 wherein: the clamping joint of the first annular convex block and the second annular convex block is provided with an L-shaped wear-resistant pad.
4. A pneumatic shut-off valve as defined in claim 1 wherein: and a sealing ring is arranged on the outer wall of the packing compression ring.
5. A pneumatic shut-off valve as defined in claim 1 wherein: the inner wall and the outer wall of pressing the splenium all are equipped with O shape circle, the gland inner wall is equipped with the dust ring, just the dust ring extends to press the splenium.
6. A pneumatic shut-off valve as defined in claim 1 wherein: and the joints of the valve rod, the ball body and the valve body are provided with static removing devices.
7. A pneumatic shut-off valve as defined in claim 1 wherein: the valve body comprises a left valve body and a right valve body, and the left valve body is connected with the right valve body through a second bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120832856.0U CN215371065U (en) | 2021-04-22 | 2021-04-22 | Pneumatic cut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120832856.0U CN215371065U (en) | 2021-04-22 | 2021-04-22 | Pneumatic cut-off valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215371065U true CN215371065U (en) | 2021-12-31 |
Family
ID=79627653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120832856.0U Active CN215371065U (en) | 2021-04-22 | 2021-04-22 | Pneumatic cut-off valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215371065U (en) |
-
2021
- 2021-04-22 CN CN202120832856.0U patent/CN215371065U/en active Active
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