CN211423397U - Rotary sealing stop valve - Google Patents
Rotary sealing stop valve Download PDFInfo
- Publication number
- CN211423397U CN211423397U CN201922454066.9U CN201922454066U CN211423397U CN 211423397 U CN211423397 U CN 211423397U CN 201922454066 U CN201922454066 U CN 201922454066U CN 211423397 U CN211423397 U CN 211423397U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve rod
- mounting hole
- rod mounting
- cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 25
- 238000012856 packing Methods 0.000 claims abstract description 25
- 210000004907 gland Anatomy 0.000 claims abstract description 21
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 12
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 12
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 11
- 239000000945 filler Substances 0.000 abstract description 4
- 238000009434 installation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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- Details Of Valves (AREA)
Abstract
The utility model relates to the technical field of valves, in particular to a rotary sealing stop valve, which comprises a valve body, a valve cover is arranged above the valve body, the valve rod, the middle part of valve gap sets up the valve rod mounting hole, the lower extreme of valve rod stretches to the disk seat on valve body upper portion from the valve rod mounting hole downwards, the top of valve rod is provided with valve-stem nut, valve rod mounting hole and valve rod clearance fit, leave sealed chamber between the upper portion of valve rod mounting hole and the valve rod, sealed intracavity packing has the polytetrafluoroethylene filler, the top that the polytetrafluoroethylene filler was provided with gland, gland's lower extreme stretches into the valve rod mounting hole and cup joints outside the valve rod, gland's outer wall and the inner wall interference fit of valve rod mounting hole, gland's upper portion side stretches out the connecting seat, the connecting seat passes through screw rod and valve gap connection, the utility model discloses the structure science, the leakproofness is good between valve gap and the valve rod.
Description
Technical Field
The utility model relates to the technical field of valves, especially, relate to a rotary type sealing 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. Stop valve among the prior art, especially the leakproofness is not good between valve rod and the valve gap, and the installation is inconvenient, takes place easily after long-time the use and reveals.
Disclosure of Invention
An object of the utility model is to prior art not enough, and provide a rotation type sealing stop valve, its leakproofness is good, is difficult for taking place to leak.
The utility model provides a technical scheme that its technical problem adopted is: a rotary sealing stop valve comprises a valve body, wherein an inlet and an outlet are respectively arranged on two sides of the lower portion of the valve body, a valve seat which is recessed downwards is arranged on the upper portion of the valve body, a valve cover and a valve rod are arranged above the valve body, the lower portion of the valve cover is fixedly connected with the upper portion of the valve body, a valve rod mounting hole which is communicated up and down is arranged in the middle of the valve cover, the lower end of the valve rod extends downwards from the valve rod mounting hole to the valve seat, a valve clack is arranged at the lower end of the valve rod, a valve rod nut which is coaxial with the valve rod mounting hole is arranged above the valve rod, the valve rod mounting hole is in clearance fit with the valve rod, a sealing cavity is reserved between the upper portion of the valve rod mounting hole and the valve rod, polytetrafluoroethylene packing is filled in the sealing cavity, a packing gland is arranged above the polytetrafluoroethylene packing, and the lower end of, the outer wall of the packing gland is in interference fit with the inner wall of the valve rod mounting hole, a connecting seat extends out of the side face of the upper portion of the packing gland, and the connecting seat is connected with the valve cover through a screw rod.
Preferably, a boss is arranged on the lower end face of the valve cover, an annular groove corresponding to the boss is arranged on the upper end face of the valve body, and a sealing gasket is arranged in the annular groove.
Preferably, a bent arm extends upwards from the side surface of the valve cover, and the valve rod nut is fixedly connected with the bent arm.
Preferably, the lower end of the screw rod is hinged with the valve cover through a shaft pin, and the upper end of the screw rod is provided with threads.
The utility model has the advantages that: a rotary sealing stop valve comprises a valve body, a valve cover and a valve rod are arranged above the valve body, a valve rod mounting hole which is communicated up and down is arranged in the middle of the valve cover, the lower end of the valve rod extends downwards from the valve rod mounting hole to a valve seat on the upper portion of the valve body, a valve rod nut which is coaxial with the valve rod mounting hole is arranged above the valve rod, the valve rod mounting hole is in clearance fit with the valve rod, a sealing cavity is reserved between the upper portion of the valve rod mounting hole and the valve rod, polytetrafluoroethylene packing is filled in the sealing cavity, a packing gland is arranged above the polytetrafluoroethylene packing, the lower end of the packing gland extends into the valve rod mounting hole and is sleeved outside the valve rod, the outer wall of the packing gland is in interference fit with the inner wall of the valve rod mounting hole, a connecting seat extends out of the side face of the upper portion of the packing gland, and, the utility model discloses the structure science, the leakproofness is good between valve gap and the valve rod, is difficult for taking place to leak.
Drawings
Fig. 1 is a schematic structural diagram of the rotary sealing stop valve of the present invention.
Description of reference numerals:
1-valve body 11-valve seat
2-valve cover 21-bent arm
3-valve rod 4-valve flap
5-valve stem nut 6-polytetrafluoroethylene packing
7-packing gland 71-connecting seat
72-screw 8-sealing gasket.
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, the rotary sealing stop valve of this embodiment includes a valve body 1, an inlet and an outlet are respectively disposed on two sides of a lower portion of the valve body 1, a valve seat 11 recessed downward is disposed on an upper portion of the valve body 1, a valve cover 2 and a valve rod 3 are disposed above the valve body 1, a lower portion of the valve cover 2 is fixedly connected with an upper portion of the valve body 1, a valve rod mounting hole penetrating up and down is disposed in a middle portion of the valve cover 2, a lower end of the valve rod 3 extends downward from the valve rod mounting hole to the valve seat 11, a valve flap 4 is disposed at a lower end of the valve rod 3, a valve rod nut 5 coaxial with the valve rod mounting hole is disposed above the valve rod 3, the valve rod mounting hole is in clearance fit with the valve rod 3, a sealing cavity is left between the upper portion of the valve rod mounting hole and the valve rod, the packing gland 7 is arranged above the polytetrafluoroethylene packing 6, the lower end of the packing gland 7 extends into the valve rod mounting hole and is sleeved outside the valve rod 3, the outer wall of the packing gland 7 is in interference fit with the inner wall of the valve rod mounting hole, the upper side face of the packing gland 7 extends out of the connecting seat 71, and the connecting seat 71 is connected with the valve cover 2 through a screw 72. The utility model discloses the structure science, through set up polytetrafluoroethylene filler 6 between valve gap 2 and valve rod 3, improve the leakproofness to set up gland 7 and be used for installation and fixed polytetrafluoroethylene filler 6 in the top, this structural seal nature is good, is difficult for taking place to leak.
Furthermore, a boss is arranged on the lower end face of the valve cover 2, an annular groove corresponding to the boss is arranged on the upper end face of the valve body 1, and a sealing gasket 8 is arranged in the annular groove, so that the sealing performance between the valve body 1 and the valve cover 2 is improved.
Further, the side of valve gap 2 upwards stretches out has the curved boom 21, stem nut 5 with curved boom 21 fixed connection through curved boom 21 with stem nut 5 upwards setting, increases the distance between its and the valve rod mounting hole to better leading valve rod 3.
Further, the lower end of the screw rod 72 is hinged to the valve cover 2 through a shaft pin, threads are arranged at the upper end of the screw rod 72, so that the screw rod is convenient to mount and dismount, and when the screw rod 72 is not used, the screw rod can be hung on the side face of the valve cover 2 due to the effect of the shaft pin, so that the screw rod is prevented from being lost.
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 (4)
1. Rotation type seal stop valve, its characterized in that: comprises a valve body (1), the lower part both sides of the valve body (1) are respectively provided with an inlet and an outlet, the upper part of the valve body (1) is provided with a valve seat (11) which is sunken downwards, the top of the valve body (1) is provided with a valve cover (2) and a valve rod (3), the lower part of the valve cover (2) is fixedly connected with the upper part of the valve body (1), the middle part of the valve cover (2) is provided with a valve rod mounting hole which is through from top to bottom, the lower end of the valve rod (3) extends downwards to the valve seat (11) from the valve rod mounting hole, the lower end of the valve rod (3) is provided with a valve clack (4), the top of the valve rod (3) is provided with a valve rod nut (5) which is coaxial with the valve rod mounting hole, the valve rod mounting hole is in clearance fit with the valve rod (3, the sealing structure is characterized in that polytetrafluoroethylene packing (6) is filled in the sealing cavity, a packing gland (7) is arranged above the polytetrafluoroethylene packing (6), the lower end of the packing gland (7) extends into the valve rod mounting hole and is sleeved outside the valve rod (3), the outer wall of the packing gland (7) is in interference fit with the inner wall of the valve rod mounting hole, a connecting seat (71) extends out of the side face of the upper portion of the packing gland (7), and the connecting seat (71) is connected with the valve cover (2) through a screw rod (72).
2. The rotary seal shut-off valve of claim 1, wherein: the lower end face of the valve cover (2) is provided with a boss, the upper end face of the valve body (1) is provided with an annular groove corresponding to the boss, and a sealing gasket (8) is arranged in the annular groove.
3. The rotary seal shut-off valve of claim 1, wherein: the valve cover (2) is characterized in that a bent arm (21) extends upwards from the side face of the valve cover, and the valve rod nut (5) is fixedly connected with the bent arm (21).
4. The rotary seal shut-off valve of claim 1, wherein: the lower end of the screw rod (72) is hinged with the valve cover (2) through a shaft pin, and the upper end of the screw rod (72) is provided with threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922454066.9U CN211423397U (en) | 2019-12-30 | 2019-12-30 | Rotary sealing stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922454066.9U CN211423397U (en) | 2019-12-30 | 2019-12-30 | Rotary sealing stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211423397U true CN211423397U (en) | 2020-09-04 |
Family
ID=72244545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922454066.9U Expired - Fee Related CN211423397U (en) | 2019-12-30 | 2019-12-30 | Rotary sealing stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211423397U (en) |
-
2019
- 2019-12-30 CN CN201922454066.9U patent/CN211423397U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200904 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |