CN203516819U - Pneumatic cut-off valve for ammonia - Google Patents
Pneumatic cut-off valve for ammonia Download PDFInfo
- Publication number
- CN203516819U CN203516819U CN201320683505.3U CN201320683505U CN203516819U CN 203516819 U CN203516819 U CN 203516819U CN 201320683505 U CN201320683505 U CN 201320683505U CN 203516819 U CN203516819 U CN 203516819U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- contact
- seal
- stuffing box
- 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 - Lifetime
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 15
- 238000012856 packing Methods 0.000 claims abstract description 17
- 238000007789 sealing Methods 0.000 claims abstract description 17
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229920001971 elastomer Polymers 0.000 claims abstract description 16
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 16
- 239000011737 fluorine Substances 0.000 claims abstract description 16
- 239000005060 rubber Substances 0.000 claims abstract description 16
- 239000000945 filler Substances 0.000 claims abstract description 6
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 210000004907 gland Anatomy 0.000 claims abstract description 4
- 238000005260 corrosion Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 230000007096 poisonous effect Effects 0.000 description 2
- 229920002165 CarbonCast Polymers 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Abstract
The invention discloses a pneumatic cut-off valve for ammonia, and relates to the technical field of a valve design. The pneumatic cut-off valve comprises a valve body, a valve cap, a valve rod, a sphere and a pneumatic actuator, wherein the valve cap is connected with the valve body through a bolt and arranged on one side of the valve body; the sphere is arranged in the valve body, the lower end of the valve rod penetrates into the valve body and is connected with the upper part of the sphere, and the pneumatic actuator is in transmission connection with the upper end of the valve rod; a packing box is arranged on the circumference of the valve rod and connected with the valve body through a bolt; a sealing filler is arranged between the valve rod and the packing box, and a gland is arranged above the sealing filler; sealing rings are arranged between the sphere and the valve body as well as between the sphere and the valve cap; a first fluorine rubber ring and a first sealing gasket are arranged between the valve cap and the valve body; and a second fluorine rubber ring and a second sealing gasket are arranged between the packing box and the valve body. With the adoption of the pneumatic cut-off valve for ammonia, the problems that a conventional common valve is easy to corrode, poor in sealing performance and short in service life.
Description
Technical field
The utility model relates to valve design technical field, particularly the manufacture of pneumatic cut-off valve for ammonia.
Background technique
In the past, the ammonia cutting-off valve of chemical industry, was generally sealability, common valve that structure is outmoded.Common valve is from material or structure does not possess special-purpose feature, and it is bad that on the one hand this valve respectively seals the sealability at position, can not stop well dielectric leakage; Under the poisonous and hazardous process conditions of burn into, often poor sealing performance, easily leaks on the other hand, housing is easily bored a hole, and working life is short, can not meet the specific (special) requirements of permanently effective conveying poisonous medium, once and ammonia leaks out, can bring very large harm to surrounding enviroment and personal safety.
Model utility content
The utility model object is for above problem, and a kind of ammonia pneumatic cut-off valve of good seal performance is provided.
The utility model comprises valve body, valve gap, valve rod, spheroid, pneumatic actuator, and described valve gap is connected with valve body by bolt, and described valve gap is arranged on a side of valve body; Described spheroid is arranged in valve body, and the lower end of described valve rod is set in valve body and is connected with the top of spheroid, and the upper end of described pneumatic actuator and valve rod is in transmission connection; In described valve rod periphery, stuffing box is set, described stuffing box and valve body are bolted; Between described valve rod and stuffing box, stuffing box packing is set, above described stuffing box packing, gland is set; Between described spheroid and valve body, seal ring is set respectively between spheroid and valve gap; The first fluorine cushion rubber and the first gasket seal are set between described valve gap and valve body; The second fluorine cushion rubber and the second gasket seal are set between described stuffing box and valve body.
The utility model working principle is: pneumatic actuator band ovable valve stem makes spheroid turn clockwise 90 °, and valve open is rotated counterclockwise 90 ° of valve closings; When disconnecting source of the gas, clockwise rotate the handwheel on pneumatic actuator, with ovable valve stem, make the spheroid of floating connection on valve rod turn clockwise 90 °, valve open, rotate counterclockwise handwheel, with ovable valve stem, make the spheroid of floating connection on valve rod be rotated counterclockwise 90 ° of valve closings.The utility model is rational in infrastructure, double sealing structure Reliable guarantee the usability of valve, guaranteed the sustainable operation of equipment pipeline, reach sealability stable, can auto-compensation.Valve housing material adopts anti-corrosion just (carbon cast steel interpolation corrosion resistant alloy), reaches corrosion-resistant, without perforation, safe and reliable, and long service life.The utility model has solved common valve in the past, perishable, poor sealing performance, the difficult problem that working life is short.
Seal ring described in two of the utility model comprises respectively the first surface of contact, the second surface of contact, the 3rd surface of contact, the first surface of contact of two seal rings contacts respectively layout with spheroid, the second surface of contact of one of them seal ring contacts respectively layout with the 3rd surface of contact with valve body, the second surface of contact of another seal ring contacts respectively layout with the 3rd surface of contact with valve gap; On the first surface of contact of two seal rings, be respectively equipped with annular supercharging seal convexity, " V " shape sealing compensation annular groove is set respectively on the second surface of contact of two seal rings and the 3rd surface of contact; The seal ring of this pattern has good springiness, the in the situation that of pressure surge, can guarantee its sealing effect, sphere boss on seal ring inclined-plane, contact with spheroid and form initial sealing pair, complete after coincideing and all form effective sealing matching surface in the left and right sides of boss, guarantee its sealing effect, the in the situation that of difference variation, also can guarantee its sealing effect.
The utility model valve gap comprises flange in valve gap, and described the first gasket seal is arranged in valve gap between flange and valve body; On the junction surface of described valve gap and valve body, be provided with first ring connected in star, described the first fluorine cushion rubber is arranged in first ring connected in star, the first fluorine cushion rubber and the first gasket seal form double seal, effectively prevent that the middle flange bolt that pipeline pressure fluctuation or difference variation cause from becoming flexible, and causes the possibility of middle flange leakage.
The utility model stuffing box comprises packing box flange, and described the second gasket seal is arranged between packing box flange and valve body; On the junction surface of described stuffing box and valve body, be provided with the second annular groove, described the second fluorine cushion rubber is arranged in the second annular groove, the second fluorine cushion rubber and the second gasket seal form double seal, effectively prevent the bolt looseness of the packing box flange that pipeline pressure fluctuation or difference variation cause, the possibility that causes packing box flange to leak.
First ring connected in star described in the utility model is dovetail groove, improves sealability.
The second annular groove described in the utility model is dovetail groove, improves sealability.
Stuffing box packing described in the utility model is multistage forming seal filler, forms combination seal, and Reliable guarantee medium does not leak outside.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the A portion enlarged view of Fig. 1.
Embodiment
As shown in Figure 1, 2, the utility model comprises valve body 1, valve gap 2, valve rod 3, spheroid 4, pneumatic actuator 5, and valve gap 2 is connected with valve body 1 by bolt, and valve gap 2 is arranged on a side of valve body 1; Spheroid 4 is arranged in valve body 1, and the lower end of valve rod 3 is set in valve body 1 and is connected with the top of spheroid 4, and pneumatic actuator 5 is in transmission connection with the upper end of valve rod 3; In valve rod 3 peripheries, stuffing box 6 is set, stuffing box 6 is bolted with valve body 1; Multistage forming seal filler 7 is set between valve rod 3 and stuffing box 6, above multistage forming seal filler 7, gland 8 is set.
Between spheroid 4 and valve body 1, seal ring 9 is set respectively between spheroid 4 and valve gap 2; Seal ring 9 described in two comprises respectively the first surface of contact 9-1, the second surface of contact 9-2, the 3rd surface of contact 9-3, the first surface of contact 9-1 of two seal rings 9 contacts layout with spheroid 4 respectively, the second surface of contact 9-2 of one of them seal ring 9 contacts layout with valve body 1 respectively with the 3rd surface of contact 9-3, and the second surface of contact 9-2 of another seal ring 9 contacts layout with valve gap 2 respectively with the 3rd surface of contact 9-3; On the first surface of contact 9-1 of two seal rings 9, be respectively equipped with annular supercharging seal convexity 10, " V " shape sealing compensation annular groove 11 is set respectively on the second surface of contact 9-2 of two seal rings 9 and the 3rd surface of contact 9-3.
The first fluorine cushion rubber 12 and the first gasket seal 13 are set between valve gap 2 and valve body 1; Valve gap 2 comprises flange 2-1 in valve gap, and the first gasket seal 13 is arranged in valve gap between flange 2-1 and valve body 1; On the junction surface of valve gap 2 and valve body 1, being provided with the first annular dovetail slot 14, the first fluorine cushion rubbers 12 is arranged in the first annular dovetail slot 14.
The second fluorine cushion rubber 15 and the second gasket seal 16 are set between stuffing box 6 and valve body 1; Stuffing box 6 comprises packing box flange 6-1, and the second gasket seal 16 is arranged between packing box flange 6-1 and valve body 1; On the junction surface of stuffing box 6 and valve body 1, being provided with the second annular dovetail slot 17, the second fluorine cushion rubbers 15 is arranged in the second annular dovetail slot 17.
Claims (7)
1. ammonia pneumatic cut-off valve, comprises valve body, valve gap, valve rod, spheroid, pneumatic actuator, and described valve gap is connected with valve body by bolt, and described valve gap is arranged on a side of valve body; Described spheroid is arranged in valve body, and the lower end of described valve rod is set in valve body and is connected with the top of spheroid, and the upper end of described pneumatic actuator and valve rod is in transmission connection; In described valve rod periphery, stuffing box is set, described stuffing box and valve body are bolted; Between described valve rod and stuffing box, stuffing box packing is set, above described stuffing box packing, gland is set; It is characterized in that: between described spheroid and valve body, seal ring is set respectively between spheroid and valve gap; The first fluorine cushion rubber and the first gasket seal are set between described valve gap and valve body; The second fluorine cushion rubber and the second gasket seal are set between described stuffing box and valve body.
2. ammonia pneumatic cut-off valve according to claim 1, it is characterized in that: the seal ring described in two comprises respectively the first surface of contact, the second surface of contact, the 3rd surface of contact, the first surface of contact of two seal rings contacts respectively layout with spheroid, the second surface of contact of one of them seal ring contacts respectively layout with the 3rd surface of contact with valve body, the second surface of contact of another seal ring contacts respectively layout with the 3rd surface of contact with valve gap; On the first surface of contact of two seal rings, be respectively equipped with annular supercharging seal convexity, " V " shape sealing compensation annular groove is set respectively on the second surface of contact of two seal rings and the 3rd surface of contact.
3. ammonia pneumatic cut-off valve according to claim 1, is characterized in that: valve gap comprises flange in valve gap, and described the first gasket seal is arranged in valve gap between flange and valve body; On the junction surface of described valve gap and valve body, be provided with first ring connected in star, described the first fluorine cushion rubber is arranged in first ring connected in star.
4. ammonia pneumatic cut-off valve according to claim 1, is characterized in that: stuffing box comprises packing box flange, and described the second gasket seal is arranged between packing box flange and valve body; On the junction surface of described stuffing box and valve body, be provided with the second annular groove, described the second fluorine cushion rubber is arranged in the second annular groove.
5. ammonia pneumatic cut-off valve according to claim 3, is characterized in that: described first ring connected in star is dovetail groove.
6. ammonia pneumatic cut-off valve according to claim 4, is characterized in that: described the second annular groove is dovetail groove.
7. ammonia pneumatic cut-off valve according to claim 1, is characterized in that: described stuffing box packing is multistage forming seal filler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320683505.3U CN203516819U (en) | 2013-11-01 | 2013-11-01 | Pneumatic cut-off valve for ammonia |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320683505.3U CN203516819U (en) | 2013-11-01 | 2013-11-01 | Pneumatic cut-off valve for ammonia |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203516819U true CN203516819U (en) | 2014-04-02 |
Family
ID=50375751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320683505.3U Expired - Lifetime CN203516819U (en) | 2013-11-01 | 2013-11-01 | Pneumatic cut-off valve for ammonia |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203516819U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542124A (en) * | 2013-11-01 | 2014-01-29 | 江苏金晟元特种阀门有限公司 | Pneumatic block valve for ammonia |
-
2013
- 2013-11-01 CN CN201320683505.3U patent/CN203516819U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542124A (en) * | 2013-11-01 | 2014-01-29 | 江苏金晟元特种阀门有限公司 | Pneumatic block valve for ammonia |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140402 |