CN201621296U - Novel dedicated cut-off valve for chlorine gas - Google Patents
Novel dedicated cut-off valve for chlorine gas Download PDFInfo
- Publication number
- CN201621296U CN201621296U CN2009203130425U CN200920313042U CN201621296U CN 201621296 U CN201621296 U CN 201621296U CN 2009203130425 U CN2009203130425 U CN 2009203130425U CN 200920313042 U CN200920313042 U CN 200920313042U CN 201621296 U CN201621296 U CN 201621296U
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- valve rod
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- gap
- rod
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Abstract
The utility model relates to a novel dedicated cut-off valve for chlorine gas, which solves the following problems in the prior art; the wear clearance occurs between the valve rod and the valve cover, thereby resulting in the leakage of chlorine gas and failure in on-line filler replacement, and the assembly/disassembly of the valve flap and the valve rod is inconvenient. The novel dedicated cut-off valve for chlorine gas comprises a valve body, a valve cover, a valve flap and a valve rod, wherein an inlet and an outlet are formed at the front and the rear parts of the valve body, the valve body is combined wtih with the valve cover to form a closed housing, the valve rod passes through the valve cover, the valve flap is sleeved at the lower end of the valve rod through a central hole, a valve base is arranged inside the valve body correspondingly to the valve flap, a filler sealing mechanism is arranged between the valve rod and the valve cover, a double-lip soft-skeleton seal ring is sleeved on the valve rod below the filler sealing mechanism and has a V-shaped cross section, inner flanges are arranged at the upper and the lower parts of the inner side of the double-lip soft-skeleton seal ring, and annular grooves are formed on the valve cover in the positions corresponding to the inner flanges and used for accommodating the double-lip soft-skeleton seal ring. The novel dedicated cut-off valve for chlorine gas has the advantages of simple structure, good seal performance, small closing torque and low liability of leakage, and is mainly applied to the chemical industry.
Description
Technical field
The utility model relates to a kind of novel chlorine special stop valve.
Background technique
Existing chlorine special stop valve comprises valve body, valve gap, flap and valve rod, wherein be provided with inlet/outlet before and after the valve body, and form the housing of sealing with valve gap, described valve rod passes valve gap, described flap is enclosed within the valve rod lower end by center hole, valve inner is provided with and the corresponding valve seat of flap, is provided with packing seal mechanism between valve rod and the valve gap.In the using process, occur wearing clearance between valve rod and the valve gap easily, cause chlorine leakage.
When packing leaking appears in existing chlorine special stop valve, can't onlinely change.Dismounting inconvenience between flap and the valve rod.
The model utility content
The technical problems to be solved in the utility model is the above-mentioned defective that how to overcome prior art, a kind of not easy to leak is provided, is convenient to the novel chlorine special stop valve of online replacing stuffing box packing.
For solving the problems of the technologies described above, this novel chlorine special stop valve comprises valve body, valve gap, flap and valve rod, wherein be provided with into before and after the valve body, outlet, and form the housing of sealing with valve gap, described valve rod passes valve gap, described flap is enclosed within the valve rod lower end by center hole, valve inner is provided with and the corresponding valve seat of flap, be provided with packing seal mechanism between valve rod and the valve gap, it is characterized in that: be with lips cartilage frame seal ring on the valve rod of described packing seal mechanism below, its cross section roughly is down " V " shape, and its inboard is respectively equipped with inward flange up and down, the relevant position of described valve gap is provided with corresponding annular groove, is used to hold lips cartilage frame seal ring.So design, lips cartilage frame seal ring has following characteristics,
1, has better elastic, can fill up the gap of using wearing and tearing to occur automatically, effectively prevent liquid chlorine or chlorine leakage.
2, because of it is the line style sealing with the axle surface of contact, it is 0 that its friction factor is ignored, and during the valve rod action, resistance is little, flexible operation.
3, as adopting compound poly-tetrafluoro rubber, lips cartilage frame seal ring has good acidproof, alkaline-resisting, wear-resisting property.Under the situation of nominal pressure≤6.5Mpa, the switch number of times surpasses 20,000 times, also can not reveal because of wearing and tearing.
As optimization, described lips cartilage frame seal ring has two, and direction is opposite.So design, sealing effect is better.
As optimization, be provided with sealing pair between described valve rod root or flap top and the valve gap, sealing pair is made up of soft seal circle and hard tray on this, and wherein soft seal circle cross section is trapezoidal, is enclosed within on the valve rod, and is fixed on valve gap inside; And hard tray is arranged on valve rod root or flap top, and is provided with cross section and is down trapezoidal annular groove, and when flap walks to top dead center, hard tray inwardly draws in, and upwards push the soft seal circle, makes it simultaneously and valve rod and the tight pressing of valve gap.
Annular groove and soft seal circle all are inversed taper platform shape, and annular groove is identical with the tapering of soft seal circle, and annular groove upper limb external diameter is less than the maximum outside diameter of soft seal circle exposed parts.The soft seal circle is made by poly-tetrafluoro (PTFE) material, and it is a dovetail groove hot pressing interference fit with contacting of valve gap, is embedded on the valve gap, and hard tray holder and valve rod or flap form integral body.
So design; when needing to change packing seal; as long as valve is reached maximum; the hard annular groove inwardly draws, also upwards pushes the soft seal circle in; make its while and valve rod and the tight pressing of valve gap, so both made stuffing box packing is taken out, also can not leak; and help to protect lips cartilage frame seal ring, have the following advantages:
Good seal performance, it is little to close torsion.
Safe and reliable when changing filler in the working procedure.
Protection cartilage frame seal ring.
As optimization, described valve rod is provided with outer groove, described flap is provided with corresponding inner groove, and be provided with the closed card ball passage that communicates with inner groove, be provided with a plurality of card balls between the inside and outside annular groove, realize clamping by this card ball between flap and the valve rod, this card ball external diameter is greater than the gap between flap center hole hole wall and the valve rod; Extreme breadth less than gap between the inside and outside annular groove.
1., can 360 ° rotate freely flap adopts the clamping of card ball, has following advantage:; 2., processing is simple; 3., the advantage of easy accessibility.
As optimization, be connected by pipe thread between valve seat and the valve body.1., processing technology is simple valve seat adopts pipe thread to connect, and has following advantage: its characteristics:; 2., not yielding; 3., convenient disassembly, common valve is unstable, yielding because of welding Golden Elephant tissue, sealing surface is fragile, defectives such as difficult sealing thereby overcome.
This novel chlorine special stop valve has simple in structure, good seal performance, closes little, the advantage of easy to leak not of torsion, is mainly used in chemical industry.
Description of drawings
Below in conjunction with accompanying drawing this novel chlorine special stop valve is described further:
Fig. 1 is the cross-sectional view (dissecing along valve rod axis) of this novel chlorine special stop valve mode of execution one;
Fig. 2 is the cross-sectional view (dissecing along valve rod axis) of this novel chlorine special stop valve mode of execution two;
To be lips cartilage frame seal ring cut open cross-sectional view after 1/4 along axis to Fig. 3.
Among the figure: 1 for valve body, 2 for valve gap, 3 for flap, 4 for valve rod, 5 for valve seat, 6 for packing seal mechanism, 7 for lips cartilage frame seal ring, 8 for the soft seal circle, 9 for hard tray, 10 for cross section be down trapezoidal annular groove, 11 for closed card ball passage, 12 for card ball, 13 for plug, 14 is a handwheel, the 701st, the inward flange of lips cartilage frame seal ring inboard can be called lip.
Embodiment
Mode of execution one: as shown in Figure 1, this novel chlorine special stop valve comprises valve body 1, valve gap 2, flap 3 and valve rod 4, wherein valve body 1 front and back are provided with into, outlet, and form the housing of sealing with valve gap 2, described valve rod 4 passes valve gap 2, described flap 3 is enclosed within valve rod 4 lower ends by center hole, valve body 1 inside is provided with and flap 3 corresponding valve seats 5, be provided with packing seal mechanism 6 between valve rod 4 and the valve gap 2, it is characterized in that: be with lips cartilage frame seal ring 7 on the valve rod 4 of described packing seal mechanism 6 belows, its cross section roughly is down " V " shape, its inboard is respectively equipped with inward flange 701 up and down, the relevant position of described valve gap 2 is provided with corresponding annular groove, is used to hold lips cartilage frame seal ring 7.Described lips cartilage frame seal ring 7 has two, and direction is opposite.
Be provided with sealing pair between described valve rod 4 roots and the valve gap 2, sealing pair is made up of soft seal circle 8 and hard tray 9 on this, and wherein soft seal circle 8 cross sections are trapezoidal, is enclosed within on the valve rod 4, and is fixed on valve gap 2 inside; And hard tray 9 is arranged on valve rod 4 roots, and is provided with cross section and is down trapezoidal annular groove 10, and when flap 3 walks to top dead center, hard tray 9 inwardly draws in, and upwards push soft seal circle 8, makes it simultaneously and valve rod 4 and valve gap 2 tight pressings, realizes sealing.
Described valve rod 4 is provided with outer groove, described flap is provided with corresponding inner groove, and be provided with the closed card ball passage 11 that communicates with inner groove, be provided with a plurality of card balls 12 between the inside and outside annular groove, realize clamping by this card ball 12 between flap 3 and the valve rod 4, these card ball 12 external diameters are greater than the gap between flap center hole hole wall and the valve rod 4; Extreme breadth less than gap between the inside and outside annular groove.
Be connected by pipe thread between valve seat 5 and the valve body 1.Card ball 12 can be selected sizeable steel ball for use.
During assembling, in the center hole on the valve rod 4 insertion flaps 3, put into a plurality of card balls 12, then, will block 11 sealings of ball passage and get final product, the most handy plug 13 sealings from card ball passage 11.
Mode of execution two: as shown in Figure 2, be provided with sealing pair between described flap 3 tops and the valve gap 2, sealing pair is made up of soft seal circle 8 and hard tray 9 on this, and wherein soft seal circle 7 cross sections are trapezoidal, is enclosed within on the valve rod 4, and is fixed on valve gap 2 inside; And hard tray 9 is arranged on flap 3 tops, and be provided with cross section and be down trapezoidal annular groove 10, when flap 3 walks to top dead center, hard tray 9 inwardly draws in, and upwards push soft seal circle 8, make it simultaneously and valve rod 4 and valve gap 2 tight pressings, all the other structures and parts are as described in the enforcement mode one.
Claims (5)
1. novel chlorine special stop valve, comprise valve body, valve gap, flap and valve rod, wherein be provided with into before and after the valve body, outlet, and form the housing of sealing with valve gap, described valve rod passes valve gap, described flap is enclosed within the valve rod lower end by center hole, valve inner is provided with and the corresponding valve seat of flap, be provided with packing seal mechanism between valve rod and the valve gap, it is characterized in that: be with lips cartilage frame seal ring on the valve rod of described packing seal mechanism below, its cross section roughly is down " V " shape, and its inboard is respectively equipped with inward flange up and down, the relevant position of described valve gap is provided with corresponding annular groove, is used to hold lips cartilage frame seal ring.
2. novel chlorine special stop valve as claimed in claim 1 is characterized in that: described lips cartilage frame seal ring has two.
3. novel chlorine special stop valve as claimed in claim 1 or 2, it is characterized in that: be provided with sealing pair between described valve rod root or flap top and the valve gap, should go up sealing pair is made up of soft seal circle and hard tray, wherein soft seal circle cross section is trapezoidal, be enclosed within on the valve rod, and be fixed on valve gap inside; And hard tray is arranged on valve rod root or flap top, and is provided with cross section and is down trapezoidal annular groove, and when flap walks to top dead center, hard tray inwardly draws in, and upwards push the soft seal circle, makes it simultaneously and valve rod and the tight pressing of valve gap.
4. novel chlorine special stop valve as claimed in claim 3, it is characterized in that: described valve rod is provided with outer groove, described flap is provided with corresponding inner groove, and be provided with the closed card ball passage that communicates with inner groove, be provided with a plurality of card balls between the inside and outside annular groove, realize clamping by this card ball between flap and the valve rod, this card ball external diameter is greater than the gap between flap center hole hole wall and the valve rod; Extreme breadth less than gap between the inside and outside annular groove.
5. novel chlorine special stop valve as claimed in claim 4 is characterized in that: be connected by pipe thread between valve seat and the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203130425U CN201621296U (en) | 2009-10-22 | 2009-10-22 | Novel dedicated cut-off valve for chlorine gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203130425U CN201621296U (en) | 2009-10-22 | 2009-10-22 | Novel dedicated cut-off valve for chlorine gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201621296U true CN201621296U (en) | 2010-11-03 |
Family
ID=43024751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203130425U Expired - Fee Related CN201621296U (en) | 2009-10-22 | 2009-10-22 | Novel dedicated cut-off valve for chlorine gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201621296U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926263A (en) * | 2012-10-25 | 2013-02-13 | 无锡市洪成造纸机械有限公司 | Anti-loosening structure of papermaking profiling roller head |
| CN102943405A (en) * | 2012-10-23 | 2013-02-27 | 无锡市洪成造纸机械有限公司 | Impacting structure of roller head of papermaking press roller |
-
2009
- 2009-10-22 CN CN2009203130425U patent/CN201621296U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943405A (en) * | 2012-10-23 | 2013-02-27 | 无锡市洪成造纸机械有限公司 | Impacting structure of roller head of papermaking press roller |
| CN102926263A (en) * | 2012-10-25 | 2013-02-13 | 无锡市洪成造纸机械有限公司 | Anti-loosening structure of papermaking profiling roller head |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101103 Termination date: 20111022 |