CN203082220U - Double packing seal stop valve - Google Patents
Double packing seal stop valve Download PDFInfo
- Publication number
- CN203082220U CN203082220U CN 201220659469 CN201220659469U CN203082220U CN 203082220 U CN203082220 U CN 203082220U CN 201220659469 CN201220659469 CN 201220659469 CN 201220659469 U CN201220659469 U CN 201220659469U CN 203082220 U CN203082220 U CN 203082220U
- Authority
- CN
- China
- Prior art keywords
- valve
- filler
- cover
- packing seal
- seal stop
- 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
- 238000012856 packing Methods 0.000 title claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 6
- 239000000945 filler Substances 0.000 claims description 26
- 210000004907 gland Anatomy 0.000 claims description 11
- 239000007770 graphite material Substances 0.000 claims description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 239000004809 Teflon Substances 0.000 claims description 3
- 229920006362 Teflon® Polymers 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Details Of Valves (AREA)
Abstract
The utility model discloses a double packing seal stop valve comprising a valve body, a channel and valve clacks are arranged in the valve body, the valve clacks are connected with a valve rod, a hand wheel is arranged at the top of the valve rod, an upper valve cover and a lower valve cover are arranged on the valve body, a sealing system is arranged between the upper valve cover and the lower valve cover, the sealing system comprises a press cover, first packing material is arranged below the press cover, the press cover is connected with the lower valve cover through a tight fixing screw, and second packing material is arranged in the upper valve cover. The double packing seal stop valve reforms the structural form of packing seal, overcomes the defects that in a common valve, the packing position is prone to leakage, packing material needs to be added or replaced frequently, and the probability of environment damages by high risk media is greatly reduced.
Description
Technical field
The utility model relates to a kind of valve, especially two packing seal stop valves.
Background technique
Original conventional stop valve, has only a stuffing box position, what use is the graphite packing sealing configuration, this structure valve is because the characteristic of graphite itself, the long-time use down leaked easily, if take place to leak the threat and the severe environmental pollution that will bring life safety, so this valve is not suitable for being applied in some band corrosivity or other occasions of transporting and storing with environmentally hazardous medium to the people.
The model utility content
The technical problems to be solved in the utility model is to overcome the deficiencies in the prior art and provide a kind of pair of packing seal stop valve, the filler place good sealing effect of this valve, long service life.
In order to achieve the above object, the technological scheme that provides of the utility model is:
A kind of pair of packing seal stop valve, comprise valve body, be provided with passage and flap in the valve body, flap connects valve rod, and the valve rod top is provided with handwheel, valve body is provided with bonnet and bottom flange, be provided with sealing system in the middle of described bonnet and the bottom flange, described sealing system comprises gland, and gland is arranged with first filler, be connected by screw between gland and the bottom flange, be provided with second filler in the described bonnet.
As the further setting of such scheme, described first filler is " V " type structure.
As the further setting of such scheme, described first filler adopts PTFE (teflon) material.
As the further setting of such scheme, described second filler adopts the establishment graphite material.
As the further setting of such scheme, described second filler adopts flexible graphite material.
The beneficial effects of the utility model are: the utility model has been reformed gland sealed structural type, has solved in the conventional valve filler place and has easily leaked, and needs often to add or change the shortcoming of filler, greatly reduces the probability that high-risk medium damages environment.
Description of drawings
Fig. 1 is a structural drawing of the present utility model.
Fig. 2 is the structural representation at sealing system place.
Among the figure: passage 1, flap 2, valve rod 3, bottom flange 4, bonnet 5, handle 6, gland 7, valve body 8, screw 9, first filler 10, sealing system 11, second filler 12.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
As shown in Figure 1 and Figure 2: a kind of pair of packing seal stop valve, comprise valve body 8, be provided with passage 1 and flap 2 in the valve body 8, flap 2 connects valve rod 3, valve rod 3 tops are provided with handwheel 6, valve body 8 is provided with bonnet 5 and bottom flange 4, be provided with sealing system 11 in the middle of described bonnet 5 and the bottom flange 4, described sealing system 11 comprises gland 7, gland 7 is arranged with first filler 10, be connected by screw 9 between gland 7 and the bottom flange 4, be provided with second filler 12 in the described bonnet 5.
As the further setting of such scheme, described first filler 10 is " V " type structure.
As the further setting of such scheme, described first filler 10 adopts PTFE (teflon) material.
As the further setting of such scheme, described second filler 12 adopts the establishment graphite material.
As the further setting of such scheme, described second filler 12 adopts flexible graphite material.
Working principle of the present utility model is: what adopt in the utility model first filler 10 is V-type PTFE form of bio-carrier, has certain elasticity, provide pretightening force by union (screwed)bonnet (UB 7, and it is anti-loosening to have screw 9, form the first layer sealing system, then adopt conventional graphite packing sealing at second filler 12, form second layer sealing system.This double seal system has effectively guaranteed the reliability of filler place sealing, makes the application area of this valve more extensive.
Claims (5)
1. two packing seal stop valve, comprise valve body (8), be provided with passage (1) and flap (2) in the valve body (8), flap (2) connects valve rod (3), valve rod (3) top is provided with handwheel (6), it is characterized in that: valve body (8) is provided with bonnet (5) and bottom flange (4), be provided with sealing system (11) in the middle of described bonnet (5) and the bottom flange (4), described sealing system (11) comprises gland (7), gland (7) is arranged with first filler (10), be connected by screw (9) between gland (7) and the bottom flange (4), be provided with second filler (12) in the described bonnet (5).
2. as claimed in claim 1 pair of packing seal stop valve is characterized in that: described first filler (10) is " V " type structure.
3. as claimed in claim 1 or 2 pair of packing seal stop valve is characterized in that: described first filler (10) adopts PTFE (teflon) material.
4. as claimed in claim 1 or 2 pair of packing seal stop valve is characterized in that: described second filler (12) adopts the establishment graphite material.
5. as claimed in claim 1 or 2 pair of packing seal stop valve is characterized in that: described second filler (12) adopts flexible graphite material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220659469 CN203082220U (en) | 2012-11-21 | 2012-11-21 | Double packing seal stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220659469 CN203082220U (en) | 2012-11-21 | 2012-11-21 | Double packing seal stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203082220U true CN203082220U (en) | 2013-07-24 |
Family
ID=48828061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220659469 Expired - Fee Related CN203082220U (en) | 2012-11-21 | 2012-11-21 | Double packing seal stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203082220U (en) |
-
2012
- 2012-11-21 CN CN 201220659469 patent/CN203082220U/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: 20130724 Termination date: 20141121 |
|
| EXPY | Termination of patent right or utility model |