CN203384393U - Stop valve - Google Patents
Stop valve Download PDFInfo
- Publication number
- CN203384393U CN203384393U CN201320482990.8U CN201320482990U CN203384393U CN 203384393 U CN203384393 U CN 203384393U CN 201320482990 U CN201320482990 U CN 201320482990U CN 203384393 U CN203384393 U CN 203384393U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- sealing
- stop valve
- flap
- 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 claims abstract description 20
- 238000001746 injection moulding Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- -1 polytetrafluoroethylene Polymers 0.000 abstract 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract 2
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract 2
- 238000000034 method Methods 0.000 description 3
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- Lift Valve (AREA)
Abstract
The utility model relates to a stop valve. The stop valve mainly solves the technical problems that when a conventional stop valve is used, as the sealing performance of a valve clack is poor, leakage occurs easily, and the service life of a product is affected and short. The stop valve comprises a valve body, a valve rod and a valve clack, wherein the valve rod penetrates through the valve body, the valve clack is fixed to the lower end of the valve rod, an inlet channel and an outlet channel are formed in the valve body, a connection port communicated with the inlet channel and the outlet channel is formed in the valve body, and the valve clack is matched with the connection port. The stop valve is characterized in that a trapezoid groove is formed in the end face of the valve clack, a sealing element made of rubber or polytetrafluoroethylene is arranged in the trapezoid groove, and the outer end face of the sealing element makes contact with the position, at the connection port, of the end face of the valve body. According to the stop valve, the trapezoid groove is formed in the valve clack, the rubber or the polytetrafluoroethylene is embedded in the trapezoid groove, so that the sealing purpose is achieved; the sealing effect is good, the corrosion resistant purpose is also achieved, and service life is long.
Description
Technical field
The utility model relates to a kind of valve, refers in particular to a kind of stop valve.
Background technique
The open-shut device of stop valve is the flap of stopper, and sealing surface is plane or the conical surface, and flap is along the center line moving linearly of valve seat.The forms of motion of valve rod, also have the lifting rotation rod-type, and stop valve refers to the valve that flap moves along the valve seat center line.Because valve rod unlatching or the shutoff stroke of such valve are relatively short, and there is cutting function very reliably, due to the variation of valve seat port and the stroke relation in direct ratio of flap, be very suitable for the adjusting to flow again.Therefore, such stop valve valve that dams is suitable as cut-out or adjusting and throttling use very much.
At present, in use, the sealability between flap and valve seat reduces the flap of stop valve, the situations such as leakage easily occur, and be affected the working life of product.
Summary of the invention
In order to overcome the deficiency of background technique, the utility model provides a kind of stop valve, solves existing stop valve in use, because the sealability of flap is poor, easily occurs leaking, thereby affects product short technical problem in working life.
The technical solution of the utility model is: a kind of stop valve, comprise valve body, valve rod, flap and valve seat, described valve rod is through valve body, described flap is fixed in the lower end of valve rod, be provided with inlet passage and outlet passage in described valve body, and be provided with the connection mouth that is communicated with inlet passage and outlet passage in valve body, described flap matches with connection mouth, it is characterized in that: the end face of described flap is provided with dovetail groove, be provided with the Sealing that rubber or polytetrafluoroethylmaterial material are made in described dovetail groove, the exterior edge face of described Sealing contacts with the valve body end face at connection mouth place.
Described dovetail groove is outer little interior large dovetail groove, and described Sealing is formed by connecting by injection moulding and dovetail groove.
The utlity model has following beneficial effect: this stop valve adopts, at flap, dovetail groove is set, and at dovetail groove, is embedded in the purpose that rubber or teflon are realized sealing, good sealing effect and reach corrosion-resistant purpose, long service life.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure, valve body 1, valve rod 2, flap 3, inlet passage 4, outlet passage 5, connection mouth 6, dovetail groove 7, Sealing 8.
Embodiment
Below for accompanying drawing, embodiment of the present utility model is described further:
Shown in figure, a kind of stop valve, comprise valve body 1, valve rod 2 and flap 3, described valve rod 2 penetrates valve body 1, described flap 3 is fixed in the lower end of valve rod 2, be provided with inlet passage 4 and outlet passage 5 in described valve body 1, and be provided with the connection mouth 6 that is communicated with inlet passage 4 and outlet passage 5 in valve body 1, described flap 3 matches with connection mouth 6, the end face of described flap 3 is provided with dovetail groove 7, be provided with the Sealing 8 that rubber or polytetrafluoroethylmaterial material are made in described dovetail groove 7, the exterior edge face of described Sealing 8 contacts with valve body 1 end face at connection mouth 6 places.During use, during valve closing, flap 3 is fitted in connection mouth 6 places, realizes the purpose of isolation inlet port 4 and outlet passage 5, and when Open valve, driving flap 3 by rotation valve rod 2 rises, make valve body 1 end face at the end face disengaging connection mouth place of flap 3, Sealing 8 disengagings contact with valve body 1, depressurization, valve opening, make logical inlet passage 4 and outlet passage 5 communicate.
As shown in the figure, described dovetail groove 7 is outer little interior large, and described Sealing 8 is formed by connecting by injection moulding and dovetail groove 7.Add man-hour, first on flap 3, process dovetail groove 8, then rubber or teflon, the mode by injection moulding is contained in dovetail groove 8, and due to outer little interior large, so Sealing 8 is difficult for from the interior disengaging of dovetail groove 8, good stability.
Embodiment should not be considered as the restriction to model utility, but any improvement of doing based on spirit of the present utility model, all should be within protection domain of the present utility model.
Claims (2)
1. a stop valve, comprise valve body (1), valve rod (2) and flap (3), described valve rod (2) penetrates valve body (1), described flap (3) is fixed in the lower end of valve rod (2), be provided with inlet passage (4) and outlet passage (5) in described valve body (1), and be provided with the connection mouth (6) that is communicated with inlet passage (4) and outlet passage (5) in valve body (1), described flap (3) matches with connection mouth (1), it is characterized in that: the end face of described flap (3) is provided with dovetail groove (7), be provided with the Sealing (8) that rubber or polytetrafluoroethylmaterial material are made in described dovetail groove (7), the exterior edge face of described Sealing (8) contacts with valve body (1) end face at connection mouth place.
2. a kind of stop valve according to claim 1, is characterized in that described dovetail groove (7) is for outer little interior large, and described Sealing (8) is formed by connecting by injection moulding and dovetail groove (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320482990.8U CN203384393U (en) | 2013-08-08 | 2013-08-08 | Stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320482990.8U CN203384393U (en) | 2013-08-08 | 2013-08-08 | Stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203384393U true CN203384393U (en) | 2014-01-08 |
Family
ID=49872887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320482990.8U Expired - Fee Related CN203384393U (en) | 2013-08-08 | 2013-08-08 | Stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203384393U (en) |
-
2013
- 2013-08-08 CN CN201320482990.8U patent/CN203384393U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140108 |