CN211423396U - Straight falling type elastic sealing stop valve - Google Patents
Straight falling type elastic sealing stop valve Download PDFInfo
- Publication number
- CN211423396U CN211423396U CN201922453402.8U CN201922453402U CN211423396U CN 211423396 U CN211423396 U CN 211423396U CN 201922453402 U CN201922453402 U CN 201922453402U CN 211423396 U CN211423396 U CN 211423396U
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- valve
- clack
- rod
- valve rod
- cavity
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Abstract
The utility model relates to the technical field of valves, in particular to a straight-falling type elastic sealing stop valve, which comprises a valve body, a valve cover and a valve rod, a valve cavity is formed on the upper surface of the valve body downwards, a valve seat is arranged at the bottom of the valve cavity, the valve cover and the valve body are fixedly connected above the valve cavity, the front end of the valve rod penetrates through the valve cover downwards and extends into the valve cavity, the front end of the valve rod is provided with a rotatable elastic valve clack, the middle part of the valve rod is connected with the valve cover through threads, work as the valve rod is down when to the minimum, the lower surface of valve clack is contradicted the upper surface of disk seat, the utility model discloses the structure science changes the valve clack into elastic plastic, and the valve clack does not rotate along with the valve rod, avoids the relative disk seat of valve clack to rotate and causes wearing and tearing, and it is more even along the radial atress of valve rod, and sealed effect is better, long service life, and the change of being convenient for.
Description
Technical Field
The utility model relates to the technical field of valves, especially, relate to a directly fall formula elastic seal stop valve.
Background
The stop valve, also called as a stop valve, is a widely used valve, and is durable due to small friction force between sealing surfaces in the opening and closing process, small opening height, easy manufacture and convenient maintenance, and is not only suitable for medium and low pressure, but also suitable for high pressure. The closing principle of the stop valve is that the valve clack sealing surface is tightly attached to the valve seat sealing surface by means of the pressure of the valve rod, and the medium is prevented from flowing through the valve clack sealing surface.
When the valve is opened and closed, the valve clack and the valve rod rotate together, sliding friction is generated in the fastening moment, the friction force is increased suddenly, the abrasion of a sealing surface is easily caused, and the service life is short.
Disclosure of Invention
An object of the utility model is to prior art not enough, and provide a directly fall formula elastic seal stop valve, its structure science, the valve clack only reciprocates along with the valve rod and does not rotate along with it to reducing wear has improved life.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a directly fall formula elastic seal stop valve, its includes valve body, valve gap, valve rod, the upper surface downward of valve body is formed with the valve pocket, the bottom of valve pocket is the disk seat, the valve gap with valve body fixed connection in the top of valve pocket, the front end of valve rod passes downwards the valve gap stretches into in the valve pocket, the front end of valve rod is provided with the rotatable elastic valve clack that has, the middle part of valve rod pass through the screw thread with valve cover connection works as when the valve rod is down to the minimum, the lower surface of valve clack is contradicted the upper surface of disk seat.
Preferably, the valve clack is cylindrical, a groove is formed in the side face of the valve clack, a connecting groove used for being connected with the valve rod is formed in the middle of the valve clack, and a cap body used for being embedded in the connecting groove is arranged at the front end of the valve rod.
Preferably, a gasket is fixedly arranged on the lower surface of the valve clack.
Preferably, the valve flap is made of polytetrafluoroethylene plastic.
Preferably, the upper end of the valve rod is provided with a hand wheel capable of driving the valve rod to rotate.
The utility model has the advantages that: the utility model provides a directly fall formula elastic seal stop valve, its includes valve body, valve gap, valve rod, the upper surface downward of valve body is formed with the valve pocket, the bottom of valve pocket is the disk seat, the valve gap with valve body fixed connection in the top of valve pocket, the front end of valve rod passes downwards the valve gap stretches into in the valve pocket, the front end of valve rod is provided with the rotatable elastic valve clack that has, the middle part of valve rod pass through the screw thread with valve gap connects, works as when the valve rod is down when extremely the minimum, the lower surface of valve clack is contradicted the upper surface of disk seat, the utility model discloses the structure science changes the valve clack into elastic plastic, and the valve clack does not rotate along with the valve rod, avoids the relative disk seat of valve clack to rotate and causes wearing and tearing, and is more even along the.
Drawings
Fig. 1 is a schematic structural view of the straight-falling elastic sealing stop valve of the present invention.
Fig. 2 is a partially enlarged view of a portion a in fig. 1.
Description of reference numerals:
1-valve body 11-valve chamber
12-valve seat 2-valve cover
3-valve stem 31-handwheel
4-valve flap.
Detailed Description
The following detailed description of the present invention is provided in connection with the accompanying drawings and the embodiments, and is not intended to limit the scope of the invention.
As shown in fig. 1 and 2, the directly-falling elastic sealing stop valve of this embodiment includes a valve body 1, a valve cover 2 and a valve rod 3, a valve cavity 11 is formed downward on the upper surface of the valve body 1, the bottom of the valve cavity 11 is a valve seat 12, the valve cover 2 is fixedly connected above the valve cavity 11 with the valve body 1, the front end of the valve rod 3 passes downward through the valve cover 2 and extends into the valve cavity 11, the front end of the valve rod 3 is provided with a rotatable elastic valve flap 4, the middle part of the valve rod 3 is connected with the valve cover 2 through a thread, and when the valve rod 3 moves downward to the lowest point, the lower surface of the valve flap 4 is abutted against the upper surface of the valve seat 12.
Further, the valve clack 4 is cylindrical, the side of the valve clack 4 is provided with a groove, the middle part of the valve clack 4 is provided with a connecting groove for connecting the valve rod 3, and the front end of the valve rod 3 is provided with a cap body for being embedded in the connecting groove.
Further, a gasket is fixedly arranged on the lower surface of the valve clack 4.
Further, the valve flap 4 is made of polytetrafluoroethylene plastic.
Further, the upper end of the valve rod 3 is provided with a hand wheel 31 which can drive the valve rod 3 to rotate.
In the embodiment, the original structure that the valve clack 4 rotates along with the valve rod 3 is changed into a structure that the valve clack 4 does not rotate along with the valve rod, in order to achieve the purpose, on one hand, the valve clack 4 is made of polytetrafluoroethylene plastics and has certain elasticity, on the other hand, a connecting groove with a small upper part and a big lower part is arranged in the middle of the valve clack 4, the cross section of the vertical surface of the connecting groove is in an inverted T shape, namely, the bottom of the connecting groove is provided with a containing cavity for containing a cap body at the end part of the valve rod, the end part of the valve rod can be conveniently extended into the containing cavity and prevented from withdrawing, so the valve clack 4 can move up and down along with the valve rod 3, when the valve rod 3 is rotated, the valve rod 3 can move up and down and rotate along the vertical direction due to the threaded connection of the valve rod 3 and the valve cover 2, avoiding abrasion.
The utility model discloses, can also conveniently change valve clack 4 and packing ring, the maintenance is simple and convenient, has improved life. The valve clack made of polytetrafluoroethylene has the advantages of acid and alkali resistance, high temperature resistance, good wear resistance and the like, is nontoxic and elastic, and is almost insoluble in all solvents.
It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.
Claims (5)
1. The straight-falling elastic sealing stop valve is characterized in that: including valve body (1), valve gap (2), valve rod (3), the upper surface downward of valve body (1) is formed with valve pocket (11), the bottom of valve pocket (11) is disk seat (12), valve gap (2) with valve body (1) fixed connection in the top of valve pocket (11), the front end of valve rod (3) passes downwards valve gap (2) stretches into in the valve pocket (11), the front end of valve rod (3) is provided with rotatable elastic valve clack (4) that has, the middle part of valve rod (3) pass through the screw thread with valve gap (2) are connected, work as when valve rod (3) are down when the minimum, the lower surface of valve clack (4) is contradicted the upper surface of disk seat (12).
2. The drop-out elastomeric seal shut-off valve of claim 1, wherein: the valve clack (4) are cylindrical, the side face of the valve clack (4) is provided with a groove, the middle part of the valve clack (4) is provided with a connecting groove used for being connected with the valve rod (3), and the front end of the valve rod (3) is provided with a cap body used for being embedded in the connecting groove.
3. The drop-out elastomeric seal shut-off valve of claim 1, wherein: and a gasket is fixedly arranged on the lower surface of the valve clack (4).
4. The drop-out elastomeric seal shut-off valve of claim 1, wherein: the valve clack (4) is made of polytetrafluoroethylene plastic.
5. The drop-out elastomeric seal shut-off valve of claim 1, wherein: the upper end of the valve rod (3) is provided with a hand wheel (31) which can drive the valve rod (3) to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922453402.8U CN211423396U (en) | 2019-12-30 | 2019-12-30 | Straight falling type elastic sealing stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922453402.8U CN211423396U (en) | 2019-12-30 | 2019-12-30 | Straight falling type elastic sealing stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211423396U true CN211423396U (en) | 2020-09-04 |
Family
ID=72288960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922453402.8U Active CN211423396U (en) | 2019-12-30 | 2019-12-30 | Straight falling type elastic sealing stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211423396U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114542968A (en) * | 2020-11-26 | 2022-05-27 | 未势能源科技有限公司 | Cylinder valve for gas cylinder and gas cylinder |
-
2019
- 2019-12-30 CN CN201922453402.8U patent/CN211423396U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114542968A (en) * | 2020-11-26 | 2022-05-27 | 未势能源科技有限公司 | Cylinder valve for gas cylinder and gas cylinder |
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