CN204164476U - A kind of stop valve - Google Patents
A kind of stop valve Download PDFInfo
- Publication number
- CN204164476U CN204164476U CN201420573301.9U CN201420573301U CN204164476U CN 204164476 U CN204164476 U CN 204164476U CN 201420573301 U CN201420573301 U CN 201420573301U CN 204164476 U CN204164476 U CN 204164476U
- Authority
- CN
- China
- Prior art keywords
- valve
- flap
- gap
- valve gap
- ring
- 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
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- Lift Valve (AREA)
Abstract
A kind of stop valve, comprises valve body, valve gap, valve rod and flap, is provided with fluid inlet passage and flowexit passage in valve body, fluid inlet passage under, flowexit passage is upper; Arrange valve port between fluid inlet passage and flowexit passage, valve port coordinates with flap, and flap is fixed on stem bottom, and by screw pair transmission between valve rod and valve gap, valve gap is fixedly connected with valve body; In valve gap, step hole is set, valve rod is fixed with back-up ring, back-up ring coordinates with the interporal lacuna of topping bar of valve gap, the hole of getting out of a predicament or an embarrassing situation of valve gap arranges internal thread, the outside thread of valve rod forms described screw pair with the internal thread in hole of getting out of a predicament or an embarrassing situation, the step of valve gap is fixed with seal ring, has spring between back-up ring and seal ring, spring props up back-up ring and seal ring respectively.The utility model has the external force that can cushion pressing valve rod, reduces the extruding of double thread pair, extends the advantage in the working life of screw pair.
Description
Technical field
The utility model relates to a kind of stop valve.
Background technique
Stop valve, also known as pipe valve valve, belongs to forced seal formula valve.The open-shut device of stop valve is the flap of stopper, and sealing surface is plane or the conical surface, and flap does straight line motion along the center of valve seat.When valve closing, pressure must be applied to flap, not reveal with forced seal face.
Stop valve comprises valve body, valve gap, valve rod and flap, fluid inlet passage and flowexit passage is provided with in valve body, arrange valve port between fluid inlet passage and flowexit passage, valve port coordinates with flap, and flap is fixed on stem bottom, by screw pair transmission between valve rod and valve gap, valve gap is fixedly connected with valve body; Arrange filler between valve gap and valve stem top, valve gap upper end and pressure cap are fixed, and valve rod has trim ring, and trim ring is between filler and pressure cap.During use, turn valve rod, due to the gearing of the screw pair between valve rod and valve gap, valve gap is fixed, and therefore valve rod rotates, moving axially of an edge valve rod, thus drives flap motion, and flap is opened or close port.
The shortcoming of this stop valve is: when unlatching or throttle down, by the power of artificial generation pressing valve rod, causes screw pair to be squeezed, shortens the life-span of screw pair.
Summary of the invention
In order to overcome the above-mentioned shortcoming of prior art, the utility model provides a kind of stop valve that can cushion the external force of pressing valve rod.
A kind of stop valve, comprises valve body, valve gap, valve rod and flap, is provided with fluid inlet passage and flowexit passage in valve body, fluid inlet passage under, flowexit passage is upper; Arrange valve port between fluid inlet passage and flowexit passage, valve port coordinates with flap, and flap is fixed on stem bottom, and by screw pair transmission between valve rod and valve gap, valve gap is fixedly connected with valve body; It is characterized in that: in valve gap, step hole is set, valve rod is fixed with back-up ring, back-up ring coordinates with the interporal lacuna of topping bar of valve gap, the hole of getting out of a predicament or an embarrassing situation of valve gap arranges internal thread, the outside thread of valve rod forms described screw pair with the internal thread in hole of getting out of a predicament or an embarrassing situation, the step of valve gap is fixed with seal ring, has spring between back-up ring and seal ring, spring props up back-up ring and seal ring respectively.
Further, the lid mouth of valve gap is provided with dust-proof cover, and dust-proof cover is fixedly connected with valve gap by lock screw, and the top of valve rod is prismatic.This stop valve is equipped with the spanner of rotary valve rod, and spanner comprises body and handle, body has the groove with valve stem top adaptation.During use, the groove of spanner is enclosed within valve stem top, handle forms lever with rotation valve rod.
Further, the taper hole that valve port is big up and small down, has O shape to enclose between flap and valve port, and O shape circle is fixed on flap.
Further, flap comprises the flap seat fixing with valve gap and valve petal body, and valve petal body is fixed by screw and flap seat, arranges floor clip between flap seat and valve petal body.
During use, valve rod is up outwarded winding by spanner, and when there being medium to flow into from inlet, at this moment flap leaves valve port, fluid inlet passage and flowexit channel conductive, at this moment by turning valve rod and regulating flow quantity; When inlet's pressure medium disappears, flap falls under gravity, at this moment by turning valve rod, utilizes wedge shape on valve seat to realize tight seal.
Downward turn valve rod has the power to pressing down spanner, and the power pressing down spanner is delivered to valve rod, and the lasso on valve rod first encounters spring, extrudes spring, cushions downward external force, reduces the extruding of double thread pair, extends the working life of screw pair.
The utility model has the external force that can cushion pressing valve rod, reduces the extruding of double thread pair, extends the advantage in the working life of screw pair.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model.
Fig. 2 is the A-A portion schematic diagram of Fig. 1.
Fig. 3 is the schematic diagram of spanner.
Embodiment
A stop valve as shown in Figure 1, comprises valve body 15, valve gap 17, valve rod 2 and flap 11, is provided with fluid inlet passage A and flowexit channel B in valve body 15, fluid inlet passage A under, flowexit channel B is upper; Arrange valve port 16 between fluid inlet passage A and flowexit channel B, valve port 16 coordinates with flap 11, and flap 11 is fixed on bottom valve rod 2, and by screw pair transmission between valve rod 2 and valve gap 17, valve gap 17 is fixedly connected with valve body 15; In valve gap 17, step hole is set, valve rod 2 is fixed with back-up ring 3, back-up ring 3 coordinates with the interporal lacuna of topping bar of valve gap 17, the hole of getting out of a predicament or an embarrassing situation of valve gap 17 arranges internal thread, the outside thread of valve rod 2 forms described screw pair with the internal thread in hole of getting out of a predicament or an embarrassing situation, the step of valve gap 17 is fixed with seal ring 5, has spring 4 between back-up ring 3 and seal ring 5, spring 4 props up back-up ring 3 and seal ring 5 respectively.
The lid mouth of valve gap 17 is provided with dust-proof cover 1, and dust-proof cover 1 is fixedly connected with valve gap 17 by lock screw, and the top 13 of valve rod 2 is prismatic, as shown in Figure 2.As shown in Figure 3, this stop valve is equipped with the spanner of rotary valve rod 2, and spanner 14 comprises body and handle 141, body has the groove 142 with valve stem top 13 adaptation.During use, the groove of spanner 14 is enclosed within valve rod 2 top, handle forms lever with rotation valve rod 2.
The taper hole that valve port 16 is big up and small down, has O shape to enclose between flap 11 and valve port 16, O shape circle is fixed on flap 11.
Flap 11 comprises the flap seat 8 fixing with valve gap 17 and valve petal body 11, and valve petal body lobe 11 is fixed by screw 7 and flap seat 8, arranges floor clip 10 between flap seat 8 and valve petal body 11.
During use, valve rod 2 is up outwarded winding by spanner 14, and when there being medium to flow into from inlet, at this moment flap 11 leaves valve port 16, and fluid inlet passage A and the conducting of flowexit channel B, at this moment by turning valve rod 2 i.e. regulating flow quantity; When inlet's pressure medium disappears, flap 11 falls under gravity, at this moment by turning valve rod 2, utilizes wedge shape on valve seat to realize tight seal.When needs are forced fluid shutoff, downward turn valve rod 2, makes flap 11 close valve port 16.
Downward turn valve rod 2 has the power to pressing down spanner 14, and the power pressing down spanner 14 is delivered to valve rod 2, and the lasso on valve rod 2 first encounters spring 4, extrudes spring 4, cushions downward external force, reduces the extruding of double thread pair, extends the working life of screw pair.
The utility model has the external force that can cushion pressing valve rod 2, reduces the extruding of double thread pair, extends the advantage in the working life of screw pair.
Content described in this specification embodiment is only enumerating the way of realization that model utility is conceived; protection domain of the present utility model should not be regarded as being only limitted to the concrete form that embodiment states, protection domain of the present utility model also and conceive the equivalent technologies means that can expect according to the utility model in those skilled in the art.
Claims (4)
1. a stop valve, comprises valve body, valve gap, valve rod and flap, is provided with fluid inlet passage and flowexit passage in valve body, fluid inlet passage under, flowexit passage is upper; Arrange valve port between fluid inlet passage and flowexit passage, valve port coordinates with flap, and flap is fixed on stem bottom, and by screw pair transmission between valve rod and valve gap, valve gap is fixedly connected with valve body; It is characterized in that: in valve gap, step hole is set, valve rod is fixed with back-up ring, back-up ring coordinates with the interporal lacuna of topping bar of valve gap, the hole of getting out of a predicament or an embarrassing situation of valve gap arranges internal thread, the outside thread of valve rod forms described screw pair with the internal thread in hole of getting out of a predicament or an embarrassing situation, the step of valve gap is fixed with seal ring, has spring between back-up ring and seal ring, spring props up back-up ring and seal ring respectively.
2. stop valve as claimed in claim 1, it is characterized in that: the lid mouth of valve gap is provided with dust-proof cover, and dust-proof cover is fixedly connected with valve gap by lock screw, the top of valve rod is prismatic.
3. stop valve as claimed in claim 2, is characterized in that: the taper hole that valve port is big up and small down having O shape to enclose between flap and valve port, and O shape circle is fixed on flap.
4. stop valve as claimed in claim 3, is characterized in that: flap comprises the flap seat fixing with valve gap and valve petal body, and valve petal body is fixed by screw and flap seat, arranges floor clip between flap seat and valve petal body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420573301.9U CN204164476U (en) | 2014-09-30 | 2014-09-30 | A kind of stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420573301.9U CN204164476U (en) | 2014-09-30 | 2014-09-30 | A kind of stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204164476U true CN204164476U (en) | 2015-02-18 |
Family
ID=52538163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420573301.9U Expired - Fee Related CN204164476U (en) | 2014-09-30 | 2014-09-30 | A kind of stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204164476U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110578730A (en) * | 2019-09-25 | 2019-12-17 | 浙江星莱和农业装备有限公司 | Door valve and rice transplanter with same |
-
2014
- 2014-09-30 CN CN201420573301.9U patent/CN204164476U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110578730A (en) * | 2019-09-25 | 2019-12-17 | 浙江星莱和农业装备有限公司 | Door valve and rice transplanter with same |
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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: 20150218 Termination date: 20160930 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |