CN203718129U - High-sealing-performance ammonia stop valve - Google Patents
High-sealing-performance ammonia stop valve Download PDFInfo
- Publication number
- CN203718129U CN203718129U CN201420023047.5U CN201420023047U CN203718129U CN 203718129 U CN203718129 U CN 203718129U CN 201420023047 U CN201420023047 U CN 201420023047U CN 203718129 U CN203718129 U CN 203718129U
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- CN
- China
- Prior art keywords
- valve
- valve rod
- spring
- valve gap
- rod
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- 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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Abstract
The utility model relates to a high-sealing-performance ammonia stop valve which comprises a valve body, a valve rod, a valve cover, a valve clack and a hand wheel. The valve cover covers the valve body, the valve rod penetrates the valve cover and extends into the valve body, the top of the valve rod is connected with the hand wheel, the bottom end of the valve rod is connected with the valve clack, a spring spinning filler bin is arranged on the upper portion of the valve cover, multistage V-shaped sealing filler is arranged on the lower portion of the spring spinning filler bin, and a press nut in threaded connection with the inner wall of the valve cover and sleeving the valve rod is arranged on the upper portion of the spring spinning filler bin. A locking nut is arranged on the outside of the press nut stretching out of the valve cover, the locking nut is located above the valve cover, and a spring assembly is arranged between the press nut and the valve rod in a sleeving mode. A reversed sealing device is arranged between the lower end of the valve cover and the valve rod, and an anti-rotating screw is installed between the reversed sealing device and the valve cover. A groove-type anti-rotating mechanism is arranged at the lower end of the valve rod and the sleeve portion of the valve clack. The stop valve adopts the V-shaped filler, improves sealing performance and prolongs service life.
Description
Technical field
The utility model relates to a kind of stop valve, particularly a kind of high leak tightness ammonia stop valve.
Background technique
Ammonia often will be used the gases such as oxygen, nitrogen, hydrogen, argon gas with stop valve.These gases are to be all generally stored in special pressurized gas, when use, make gas pressure be down to the required scope of experiment by ammonia with stop valve, then pass through other control valve fine tuning, make gas input use system, the most frequently used reduction valve is ammonia stop valve, is called for short ammonia valve.The filling container of existing stop valve is all for being directly pressed into filler, and filler is a set of is planar circular stuffing box packing, and planar circular sealability can not reach the requirement of sealing, sometimes can cause leakage, initiation potential, ammoniacal liquor is poisonous medium, corrodible most metal, causes a series of quality problems.
Model utility content
The utility model, in order to overcome prior art defect and deficiency, provides a kind of high leak tightness ammonia stop valve.
The technical solution of the utility model is: a kind of high leak tightness ammonia stop valve, comprise valve body, valve rod, valve gap, flap and handwheel, described valve gap is located on valve body, described valve rod is applied in valve gap and extends in valve body, valve rod top is connected with handwheel, and its bottom is connected with flap, and described valve gap top is provided with spring spinning filling container, the bottom of described spring spinning filling container is provided with multistage V-seal filler, and its top is provided with the gland nut on valve rod that is sleeved on being connected with valve gap inner thread; The outside that described gland nut passes the part of valve gap is provided with locking nut, and this locking nut is positioned at the top of valve gap, between gland nut and valve rod, is set with spring assembly; Between described valve gap lower end and valve rod, be provided with back seal device, between described back seal device and valve gap, anti-turn screw be installed; Described valve rod lower end and flap suit part are provided with slot type rotation-preventing mechanism.
Described back seal apparatus structure is inner wall smooth, and outer wall is provided with externally threaded tube-in-tube structure, and this back seal device is connected with valve gap inner thread.
Described spring assembly contains holddown spring and is arranged on respectively the upper and lower spring seat of holddown spring upper and lower end, and the end face of described upper spring seat is positioned on gland nut, and the bottom surface of lower spring cup is positioned in stuffing box packing.
On the inside and outside wall of described gland nut, be respectively equipped with an annular groove, in described annular groove, be separately installed with inside and outside O RunddichtringO.
Described slot type rotation-preventing mechanism contains expansion controlling ring-shaped insert and anti-rotation sleeve, and described rotating prevention sleeve jacket casing is contained on valve rod, and its outer wall is threaded with flap upper inside wall; Described expansion controlling ring-shaped insert is arranged in the groove of valve rod lower end, and its upper-end surface is connected with anti-rotation sleeve bottom surface.
Between described flap bottom surface and valve body, be provided with sealing layer.
The beneficial effects of the utility model are:
1, the utility model high leak tightness ammonia adopts V-arrangement filler with the stuffing box packing of stop valve, makes the surface of contact of highest and lowest in a set of filler constant, thereby improves sealability;
2, on the valve gap of the utility model high leak tightness ammonia with stop valve, design a spring spinning filling container, by spring and the direct spinning of spring seat on filler, press gland nut, on gland nut, be designed with inside and outside two O type ring recess, opening force is little, improve sealability, spinning type upper-lower seal face, sealing effect is better;
3, the utility model high leak tightness ammonia adopts slot type rotation-preventing mechanism with the flap of stop valve, improves the flexibility of valve; The utility model is simple in structure, easy to use, reliable, is easy to make, and cost is low.
4, on the valve gap of the utility model high leak tightness ammonia with stop valve, be designed with back seal device, in the time that filler damages, can repair online, facilitate the replacing of filler, be convenient to the maintenance of valve.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model high leak tightness ammonia stop valve.
Embodiment
Below in conjunction with the drawings and the specific embodiments, the utility model is described in further detail:
Embodiment: referring to Fig. 1, wherein, number in the figure: 1, valve body, 2, sealing layer, 3, flap, 4, expansion controlling ring-shaped insert, 5, anti-rotation sleeve, 6, valve gap, 7, back seal device, 8, valve rod, 9, V-seal filler, 10, lower spring cup, 11, gland nut, 12, handwheel, 13, interior O RunddichtringO, 14, locking nut, 15, upper spring seat, 16, holddown spring, 17, outer O RunddichtringO, 18, anti-turn screw hole.
A kind of high leak tightness ammonia stop valve, comprise valve body 1, valve rod, valve gap 6, flap 3 and handwheel 12, described valve gap 6 is located on valve body 1, described valve rod 6 is applied in valve gap 6 and extends in valve body 1, valve rod 8 tops are connected with handwheel 12, and its bottom is connected with flap 3, and described valve gap 6 tops are provided with spring spinning filling container, the bottom of described spring spinning filling container is provided with multistage V-seal filler 9, and its top is provided with the gland nut 11 on valve rod 8 that is sleeved on being connected with valve gap 6 inner threads; The outside that described gland nut 11 passes the part of valve gap 6 is provided with locking nut 14, and this locking nut 14 is positioned at the top of valve gap 6, between gland nut 11 and valve rod 8, is set with spring assembly; Between described valve gap 6 lower ends and valve rod 8, be provided with back seal device 7, between described back seal device 7 and valve gap 6, anti-turn screw be installed, anti-turn screw is arranged in anti-turn screw hole 8; Described valve rod 8 lower ends and flap 3 suit parts are provided with slot type rotation-preventing mechanism.
Described spring assembly contains holddown spring 15 and is arranged on respectively the upper and lower spring seat 15,10 of holddown spring 16 upper and lower ends, and the end face of described upper spring seat 15 is positioned on gland nut 11, and the bottom surface of lower spring cup 10 is positioned on V-seal filler 9.
Described back seal device 7 structures are inner wall smooth, and outer wall is provided with externally threaded tube-in-tube structure, and this back seal device 7 is connected with valve gap 6 inner threads.
On the inside and outside wall of described gland nut 11, be respectively equipped with an annular groove, in described annular groove, be separately installed with inside and outside O RunddichtringO 13,17.
Described slot type rotation-preventing mechanism contains expansion controlling ring-shaped insert 4 and anti-rotation sleeve 5, and described anti-rotation sleeve 5 is sleeved on valve rod 8, and its outer wall is threaded with the top of flap 3 inwalls; Described expansion controlling ring-shaped insert 4 is arranged in the groove of valve rod 8 lower ends, and its upper-end surface is connected with anti-rotation sleeve 5 bottom surfaces.
Between described flap 3 bottom surfaces and valve body, be provided with sealing layer 2, described sealing layer 2 is tetrafluoroethylene pad.
Above embodiment is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment of making, be equal to replacement, improve, within all should being included in protection domain of the present utility model.
Claims (6)
1. a high leak tightness ammonia stop valve, comprise valve body, valve rod, valve gap, flap and handwheel, described valve gap is located on valve body, described valve rod is applied in valve gap and extends in valve body, valve rod top is connected with handwheel, and its bottom is connected with flap, it is characterized in that: described valve gap top is provided with spring spinning filling container, the bottom of described spring spinning filling container is provided with multistage V-seal filler, and its top is provided with the gland nut on valve rod that is sleeved on being connected with valve gap inner thread; The outside that described gland nut passes the part of valve gap is provided with locking nut, and this locking nut is positioned at the top of valve gap, between gland nut and valve rod, is set with spring assembly; Between described valve gap lower end and valve rod, be provided with back seal device, between described back seal device and valve gap, anti-turn screw be installed; Described valve rod lower end and flap suit part are provided with slot type rotation-preventing mechanism.
2. high leak tightness ammonia stop valve according to claim 1, is characterized in that: described back seal apparatus structure is inner wall smooth, and outer wall is provided with externally threaded tube-in-tube structure, this back seal device is connected with valve gap inner thread.
3. high leak tightness ammonia stop valve according to claim 1, it is characterized in that: described spring assembly contains holddown spring and is arranged on respectively the upper and lower spring seat of holddown spring upper and lower end, the end face of described upper spring seat is positioned on gland nut, and the bottom surface of lower spring cup is positioned in stuffing box packing.
4. according to the high leak tightness ammonia stop valve described in claim 1 or 3, it is characterized in that: on the inside and outside wall of described gland nut, be respectively equipped with an annular groove, in described annular groove, be separately installed with inside and outside O RunddichtringO.
5. high leak tightness ammonia stop valve according to claim 1, is characterized in that: described slot type rotation-preventing mechanism contains expansion controlling ring-shaped insert and anti-rotation sleeve, described rotating prevention sleeve jacket casing is contained on valve rod, and its outer wall is threaded with flap upper inside wall; Described expansion controlling ring-shaped insert is arranged in the groove of valve rod lower end, and its upper-end surface is connected with anti-rotation sleeve bottom surface.
6. high leak tightness ammonia stop valve according to claim 1, is characterized in that: between described flap bottom surface and valve body, be provided with sealing layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420023047.5U CN203718129U (en) | 2014-01-15 | 2014-01-15 | High-sealing-performance ammonia stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420023047.5U CN203718129U (en) | 2014-01-15 | 2014-01-15 | High-sealing-performance ammonia stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203718129U true CN203718129U (en) | 2014-07-16 |
Family
ID=51157279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420023047.5U Expired - Fee Related CN203718129U (en) | 2014-01-15 | 2014-01-15 | High-sealing-performance ammonia stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203718129U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110925471A (en) * | 2019-12-10 | 2020-03-27 | 上海廷本流体控制有限公司 | Low-temperature stop valve |
| CN112013120A (en) * | 2020-08-21 | 2020-12-01 | 肯卓自控工程(江苏)有限公司 | High-sealing gas stop valve |
-
2014
- 2014-01-15 CN CN201420023047.5U patent/CN203718129U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110925471A (en) * | 2019-12-10 | 2020-03-27 | 上海廷本流体控制有限公司 | Low-temperature stop valve |
| CN112013120A (en) * | 2020-08-21 | 2020-12-01 | 肯卓自控工程(江苏)有限公司 | High-sealing gas stop valve |
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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: 20140716 Termination date: 20150115 |
|
| EXPY | Termination of patent right or utility model |