CN203948672U - A kind of Novel self sealing gate valve - Google Patents
A kind of Novel self sealing gate valve Download PDFInfo
- Publication number
- CN203948672U CN203948672U CN201420388791.5U CN201420388791U CN203948672U CN 203948672 U CN203948672 U CN 203948672U CN 201420388791 U CN201420388791 U CN 201420388791U CN 203948672 U CN203948672 U CN 203948672U
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- China
- Prior art keywords
- valve
- seal ring
- flashboard
- valve body
- stuffing box
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- Expired - Fee Related
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Abstract
A kind of Novel self sealing gate valve, relate to a kind of gate valve, valve body middle part is cavity, its top connects valve gap, valve body central authorities are provided with valve rod, flashboard is housed in valve body, flashboard top is connected with valve rod, the surface of contact of flashboard and valve seat is provided with soft seal pair, valve rod upper periphery is provided with lubrication box, lubrication box is connected with support, after pressing plate connection bracket, be arranged on valve body, pressing plate lower end is provided with gland, gland has Stuffing box, between Stuffing box and valve gap, be provided with twice O type circle, between Stuffing box and valve body, be provided with seal ring, below seal ring, be provided with carbon seal ring, carbon seal ring is installed below seal ring, twice O type circle is installed between Stuffing box and valve gap, strengthen lumen sealability, Applicable media scope is wide, switch moment is little, long service life.
Description
Technical field
The utility model relates to a kind of gate valve, and particularly a kind of Novel self sealing gate valve, is applicable to the industries such as petrochemical industry, bio-pharmaceuticals, mine metallurgy.
Background technique
Since China's reform and opening-up, national economy rapid growth, " scientific and technical innovation, autonomous innovation " become the main flow of domestic industry development.China's industry is just step by step to the future development of intensive style, energy-saving and emission-reduction, low-carbon (LC).Valve is in fluid system, is used for controlling direction, the pressure of fluid, the device of flow, fits tightly by flashboard sealing surface and sealing surface of seat, stops medium circulation.The existing type self-sealing gate valve of carving is to be mainly made up of critical pieces such as valve body, valve seat, flashboard, sealing pair, gland, handwheels, and the parts that wherein seal between flashboard and valve seat are sealing pairs.Traditional flashboard adopts the structural type of rigidity contact sealing more, be that sealing surface is metal, because metal sealing elastic properties of materials is little, rigidity is large, on sealing surface, need to have larger specific pressure could form effective sealing, so all need larger moment when closing and opening, easily cause lumen to leak.Application number is 201120457290.4, and patentee is Yancheng Si Dade financial resources of the people valve Co., Ltd, and patent name is self-sealing gate valve, this valve mechanism is simple, easy to operate, adopt soft seal pair to make sealing reliable, but the lumen sealability of this kind of valve does not still reach ideal effect.In order to address the above problem, constantly research and discovery of the technician of R&D institution and enterprise, wishes to overcome the defect that prior art exists, although make some progress technically, still exists the technical problem not yet overcoming in practice.
Summary of the invention
The purpose of this utility model is to overcome above deficiency, and a kind of Novel self sealing gate valve is provided, and carbon seal ring is installed below seal ring, twice O type circle is installed between Stuffing box and valve gap, is strengthened lumen sealability, it is simple in structure, for ease of maintenaince, cost is lower.
The utility model solves the technological scheme that its technical problem adopts: contain valve body, valve seat, flashboard, valve rod, carbon seal ring, seal ring, Stuffing box, valve gap, O type circle, filler, gland, pressing plate, support, valve mother, press female, handwheel, valve body middle part is cavity, its top connects valve gap, valve body central authorities are provided with valve rod, and flashboard is housed in valve body, and flashboard top is connected with valve rod, the surface of contact of flashboard and valve seat is provided with soft seal pair, and valve rod upper periphery is provided with lubrication box, is provided with successively from top to bottom and presses mother in lubrication box, bearing, valve mother, lubrication box is connected with support, after pressing plate connection bracket, be arranged on valve body, pressing plate lower end is provided with gland, and gland has Stuffing box, is provided with filler in Stuffing box, between Stuffing box and valve gap, be provided with twice O type circle, between Stuffing box and valve body, be provided with seal ring, be provided with carbon seal ring below seal ring, valve rod is through valve gap, pressing plate and support, handwheel is installed in its upper end, and the outside of handwheel is provided with nut, prevents that for fixing handwheel it from coming off, and valve stem tip adopts arc transition, for reducing surface of contact, increases flashboard flexibility.
Preferably, described filler is V-type moulding filler.
The utility model solves the know-why that its technical problem adopts: rotation hand wheel, valve rod will be made the action of rising or declining, and promotes rising or the decline of flashboard, connects or block the work of pipeline medium thereby complete.Gate valve relies on valve rod pressure, and flashboard sealing surface and sealing surface of seat are fitted tightly, and stops medium circulation.Gland and pressing plate press seal for filler, seal ring is between Stuffing box and carbon seal ring, and this structure forms twice selfsealings in the time of pressure-bearing, and pressure is healed high sealing better, forms radial seal in the time of low pressure, in the larger situation of pressure, all can seal.Valve stem tip adopts arc transition, reduces surface of contact, increases flashboard flexibility.Between Stuffing box and valve gap, be provided with twice O type circle, strengthen lumen sealing effect, increased working life and the non-maintaining phase of valve.The handwheel of described valve stem tip also can remove, and replaces with the connection of the kinds of drive such as other employings are pneumatic, electronic, gear transmission.
The beneficial effects of the utility model are: carbon seal ring is installed below seal ring, twice O type circle is installed between Stuffing box and valve gap, strengthen lumen sealability, Applicable media scope is wide, and switch moment is little, long service life.
Brief description of the drawings
In conjunction with the accompanying drawings and embodiments the utility model to be further described below.
It in figure, is a kind of Novel self sealing gate valve structure schematic diagram.
In the drawings, 1. valve body, 2. valve rod, 3. carbon seal ring, 4. seal ring, 5. Stuffing box, 6. valve gap, 7.O type circle, 8. filler, 9. gland, 10. pressing plate, 11. supports, 12. valve mothers, 13. press female, 14. handwheels.
Embodiment
In the drawings, valve body 1 middle part is cavity, its top connects valve gap 6, valve body 1 central authorities are provided with valve rod 2, in valve body 1, flashboard is housed, flashboard top is connected with valve rod 2, the surface of contact of flashboard and valve seat is provided with soft seal pair, valve rod 2 upper periphery are provided with lubrication box, in lubrication box, be provided with successively from top to bottom and press female 13, bearing, valve mother 12, lubrication box is connected with support 11, after pressing plate 10 connection brackets 11, be arranged on valve body 1, pressing plate 10 lower ends are provided with gland 9, gland 9 has Stuffing box 5, in Stuffing box 5, be provided with filler 8, between Stuffing box 5 and valve gap 6, be provided with twice O type circle 7, between Stuffing box 5 and valve body 1, be provided with seal ring 4, seal ring 4 is provided with carbon seal ring 3 below, valve rod 2 is through valve gap 6, pressing plate 10 and support 11, handwheel 14 is installed in its upper end, the outside of handwheel 14 is provided with nut, prevent that for fixing handwheel 14 it from coming off, valve rod 2 tops adopt arc transition, be used for reducing surface of contact, increase flashboard flexibility, described filler is V-type moulding filler.
Rotation hand wheel 14, valve rod 2 will be made the action of rising or declining, and promotes rising or the decline of flashboard, connects or block the work of pipeline medium thereby complete.Gate valve relies on valve rod 2 pressure, and flashboard sealing surface and sealing surface of seat are fitted tightly, and stops medium circulation.Filler 8 use glands 9 and pressing plate 10 press seals, seal ring 4 is between Stuffing box 5 and carbon seal ring 3, and this structure forms twice selfsealings in the time of pressure-bearing, and pressure is healed high sealing better, forms radial seal in the time of low pressure, in the larger situation of pressure, all can seal.Valve rod 2 tops adopt arc transition, reduce surface of contact, increase flashboard flexibility.Between Stuffing box 5 and valve gap 6, be provided with twice O type circle 7, strengthen lumen sealing effect, increased working life and the non-maintaining phase of valve.The handwheel 14 on described valve rod 2 tops also can remove, and replaces with the connection of the kinds of drive such as other employings are pneumatic, electronic, gear transmission.This valve mechanism is simple, and Applicable media scope is wide, and switch moment is little, long service life.
Claims (2)
1. a Novel self sealing gate valve, contain valve body, valve seat, flashboard, valve rod, carbon seal ring, seal ring, Stuffing box, valve gap, O type circle, filler, gland, pressing plate, support, valve mother, press female, handwheel, it is characterized in that: valve body middle part is cavity, its top connects valve gap, valve body central authorities are provided with valve rod, flashboard is housed in valve body, flashboard top is connected with valve rod, the surface of contact of flashboard and valve seat is provided with soft seal pair, valve rod upper periphery is provided with lubrication box, in lubrication box, be provided with successively from top to bottom and press mother, bearing, valve mother, lubrication box is connected with support, after pressing plate connection bracket, be arranged on valve body, pressing plate lower end is provided with gland, gland has Stuffing box, in Stuffing box, be provided with filler, between Stuffing box and valve gap, be provided with twice O type circle, between Stuffing box and valve body, be provided with seal ring, below seal ring, be provided with carbon seal ring, valve rod is through valve gap, pressing plate and support, handwheel is installed in its upper end, the outside of handwheel is provided with nut.
2. a kind of Novel self sealing gate valve according to claim 1, is characterized in that: described filler is V-type moulding filler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420388791.5U CN203948672U (en) | 2014-07-15 | 2014-07-15 | A kind of Novel self sealing gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420388791.5U CN203948672U (en) | 2014-07-15 | 2014-07-15 | A kind of Novel self sealing gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203948672U true CN203948672U (en) | 2014-11-19 |
Family
ID=51890709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420388791.5U Expired - Fee Related CN203948672U (en) | 2014-07-15 | 2014-07-15 | A kind of Novel self sealing gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203948672U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500768A (en) * | 2014-12-10 | 2015-04-08 | 浙江华尔士自控仪表阀门有限公司 | Pneumatic wedge type gate valve |
| CN105972307A (en) * | 2016-06-24 | 2016-09-28 | 江苏永钢集团有限公司 | Valve sealing device |
| CN107515075A (en) * | 2016-06-17 | 2017-12-26 | 上海弘盛特种阀门制造股份有限公司 | It is a kind of detecting the device of carbon seal ring ring seal performance |
-
2014
- 2014-07-15 CN CN201420388791.5U patent/CN203948672U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500768A (en) * | 2014-12-10 | 2015-04-08 | 浙江华尔士自控仪表阀门有限公司 | Pneumatic wedge type gate valve |
| CN107515075A (en) * | 2016-06-17 | 2017-12-26 | 上海弘盛特种阀门制造股份有限公司 | It is a kind of detecting the device of carbon seal ring ring seal performance |
| CN107515075B (en) * | 2016-06-17 | 2023-04-07 | 上海弘盛特种阀门制造股份有限公司 | Device for detecting ring sealing performance of graphite sealing ring |
| CN105972307A (en) * | 2016-06-24 | 2016-09-28 | 江苏永钢集团有限公司 | Valve sealing device |
| CN105972307B (en) * | 2016-06-24 | 2018-04-13 | 江苏永钢集团有限公司 | A kind of valve sealing device |
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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: 20141119 Termination date: 20190715 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |