CN102818039A - Back seal solid gate plate non-rising stem gate valve - Google Patents
Back seal solid gate plate non-rising stem gate valve Download PDFInfo
- Publication number
- CN102818039A CN102818039A CN2012102953099A CN201210295309A CN102818039A CN 102818039 A CN102818039 A CN 102818039A CN 2012102953099 A CN2012102953099 A CN 2012102953099A CN 201210295309 A CN201210295309 A CN 201210295309A CN 102818039 A CN102818039 A CN 102818039A
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- valve
- screw rod
- rod
- flashboard
- rising stem
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Abstract
The invention discloses a back seal solid gate plate non-rising stem gate valve, which comprises a valve body, a valve cover, a valve rod, a screw rod, a gate plate and a hand wheel, wherein a support frame is arranged above the valve cover, the valve rod is formed in a cavity formed by the inside of the valve cover and the support frame, the upper end of the valve rod is in T-shaped groove connection with the hand wheel arranged above the support frame, the lower section of the valve rod is hollow, in addition, the end part of the valve rod is provided with a screw nut, the screw rod is arranged in a screw rod cavity formed by the inside of the valve body and the valve cover and is spirally matched with the screw nut, and the lower end of the screw rod is connected with the gate plate. The back seal solid gate plate non-rising stem gate valve has the characteristics that the sealing performance is good, the service life is long, the pressure resistance capability of the gate plate is high, the erosion resistance performance is realized, and the maintenance and the installation are convenient, and the like.
Description
Technical field
The invention belongs to valve technology field, particularly oil, chemical industry and water supply line are used inside screw non-rising stem type gate valve.
Background technique
At present; Oil, chemical industry and water supply line comprise parts such as valve body, screw rod, valve gap, valve rod, flashboard, handwheel with inside screw non-rising stem type gate valve; Traditional inside screw non-rising stem type gate valve does not have the back seal setting at valve rod and valve gap connection part, and the easy like this leakage that causes medium and some aggressive medium are to the corrosion of filler; Moreover traditional inside screw non-rising stem type gate valve is because the change of its up-down mode makes to make the compression resistance of flashboard and anti-erosion property reduce by the middle through hole that has the valve rod size of flashboard that the defective of this two aspect has reduced the working life of valve.
Summary of the invention
The objective of the invention is to overcome the defective of existing technology, the solid flashboard inside screw non-rising stem type gate valve of back seal that a kind of long service life, installation and maintenance are convenient, anti-corrosion capacity is strong is provided.
To achieve these goals; Following technical proposal has been adopted in invention: the invention discloses the solid flashboard inside screw non-rising stem type gate valve of a kind of back seal; It comprises valve body, valve gap, valve rod, screw rod, flashboard, handwheel; Wherein, described valve gap top is provided with support, and valve rod is arranged in support and the inner cavity that forms of valve gap; Said valve rod upper end is T type groove with the handwheel that is arranged on the support top and is connected; Described valve rod hypomere is hollow and the termination is provided with nut; Screw rod is arranged in the screw rod chamber that valve gap and valve inner form and cooperates in the shape of a spiral with nut, and the lower end of screw rod is connected with flashboard.
Wherein, the T type that the is connected to groove clamping of described screw rod and flashboard.
Wherein, being trapezoidal thread between valve rod and the nut connects.
Wherein, screw rod comprises screw rod shaft and inserted part, and screw rod shaft and jointing place, inserted part are chamfer surface.
Compare with existing inside screw non-rising stem type gate valve, the present invention has following advantage:
(1) the screw rod inserted part is provided with chamfer surface, realizes that back seal and filler to the double seal of valve, have reduced the erosion to filler of dielectric leakage and medium, has prolonged the working life of valve;
(2) screw rod adopts draw-in groove to be connected with flashboard, no through hole, and it is solid to make the ono-rising-stem valve flashboard realize, has strengthened flashboard compressive strength and abrasion-resistance;
(3) described inside screw non-rising stem type gate valve valve rod does not have directly with medium and contacts, and has avoided the corrosion of medium to valve rod;
(4) described valve uses flexibly, and is easy to installation and maintenance quick, effectively practiced thrift the valve maintenance cost.
Below will combine accompanying drawing and embodiment, the present invention will be carried out comparatively detailed explanation.
Description of drawings
Fig. 1 is the structural representation of inside screw non-rising stem type gate valve of the present invention;
Fig. 2 is the structural representation of valve rod of the present invention;
Fig. 3 is the structural representation of screw rod of the present invention.
Embodiment
See also Fig. 1-3, the solid flashboard gate valve of a kind of back seal comprises valve body 1, handwheel 2, valve rod 3, screw rod 4, flashboard 5, valve gap 6 and support 7; Valve gap 6 is arranged on the valve body 1 through bolt, and support 7 is arranged on the valve gap 6 through bolt, and flashboard 5 is arranged in the valve body 1; Valve rod 3 is arranged in support 7 and the valve gap 6 inner cavitys that form; Screw rod 4 is arranged in valve gap 6 and the valve body 1 inner screw rod chamber that forms; Screw rod 4 comprises screw rod body 41 and inserted part 42, and screw rod shaft 41 is the chamfer surface 43 of 45 with 42 jointing places, inserted part, and this chamfer surface 43 contacts with seal arrangement on the valve gap 6 when screw rod 4 moves upward, and seals; The upper end of valve rod 3 is connected through T type keyway with handwheel 2, and valve rod 3 hypomeres are hollow section 31; Screw rod shaft 41 is provided with trapezoidal outside thread, and hollow section 31 terminations are provided with and trapezoidal outside thread nut engaged 32; Inserted part 42 is provided with 5 one-tenth T types of groove and flashboard groove snap fit and is connected; Screw rod 4 comprises screw rod body 41, inserted part 42, and screw rod body 41 is the chamfer surface 43 of 45 with 42 jointing places, inserted part, and this chamfer surface 43 forms sealing with the port 61 of valve gap 6 when screw rod 4 moves upward.
This valve is compared with traditional inside screw non-rising stem type gate valve, adopts this two valve rod that cuts to make this gate valve have the double seal effect, has realized inside screw non-rising stem type gate valve flashboard solid construction simultaneously, has prolonged the working life of valve, and this inside screw non-rising stem type gate valve is applicable to various oil transportations, aqueduct.
Claims (5)
1. solid flashboard inside screw non-rising stem type gate valve of back seal, it comprises valve body, valve gap, valve rod, screw rod, flashboard, handwheel, it is characterized in that: described valve gap top is provided with support, and valve rod is arranged in the cavity of support and the inner formation of valve gap; Said valve rod upper end is T type groove with the handwheel that is arranged on the support top and is connected; Described valve rod hypomere is hollow and the termination is provided with nut; Screw rod is arranged in the screw rod chamber that valve gap and valve inner form and cooperates in the shape of a spiral with nut, and the lower end of screw rod is connected with flashboard.
2. the solid flashboard inside screw non-rising stem type gate valve of a kind of back seal according to claim 1 is characterized in that: the T type that the is connected to groove clamping of described screw rod and flashboard.
3. the solid flashboard inside screw non-rising stem type gate valve of a kind of back seal according to claim 1 and 2 is characterized in that: be trapezoidal thread between described valve rod and the nut and connect.
4. the solid flashboard inside screw non-rising stem type gate valve of a kind of back seal according to claim 1 and 2 is characterized in that: screw rod bag screw rod shaft and inserted part, screw rod shaft and jointing place, inserted part are chamfer surface.
5. the solid flashboard inside screw non-rising stem type gate valve of a kind of back seal according to claim 3 is characterized in that: screw rod bag screw rod shaft and inserted part, screw rod shaft and jointing place, inserted part are chamfer surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102953099A CN102818039A (en) | 2012-08-20 | 2012-08-20 | Back seal solid gate plate non-rising stem gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102953099A CN102818039A (en) | 2012-08-20 | 2012-08-20 | Back seal solid gate plate non-rising stem gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102818039A true CN102818039A (en) | 2012-12-12 |
Family
ID=47302355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102953099A Pending CN102818039A (en) | 2012-08-20 | 2012-08-20 | Back seal solid gate plate non-rising stem gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102818039A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3788600A (en) * | 1972-08-24 | 1974-01-29 | Cameron Iron Works Inc | Gate valve |
| US3912221A (en) * | 1974-06-26 | 1975-10-14 | United States Pipe Foundry | Stem seal and retainer for gate valve |
| CN101089440A (en) * | 2006-06-15 | 2007-12-19 | 张胜海 | Valve stem and processing method |
| CN201090763Y (en) * | 2007-10-29 | 2008-07-23 | 周忠义 | Anti-dropping anchor gate |
| CN201306499Y (en) * | 2008-12-10 | 2009-09-09 | 吉林凯仕达阀门有限公司 | A steel pipe welding valve |
| CN201531630U (en) * | 2009-11-24 | 2010-07-21 | 屈礼平 | Magnetic encryption stopping soft sealing valve |
| CN201705286U (en) * | 2010-04-26 | 2011-01-12 | 长江大学 | Double-stem gate valve of thermal production well head |
| CN202746628U (en) * | 2012-08-20 | 2013-02-20 | 浙江汉威阀门制造有限公司 | Back seal built-in rod sluice valve provided with solid flashboard |
-
2012
- 2012-08-20 CN CN2012102953099A patent/CN102818039A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3788600A (en) * | 1972-08-24 | 1974-01-29 | Cameron Iron Works Inc | Gate valve |
| US3912221A (en) * | 1974-06-26 | 1975-10-14 | United States Pipe Foundry | Stem seal and retainer for gate valve |
| CN101089440A (en) * | 2006-06-15 | 2007-12-19 | 张胜海 | Valve stem and processing method |
| CN201090763Y (en) * | 2007-10-29 | 2008-07-23 | 周忠义 | Anti-dropping anchor gate |
| CN201306499Y (en) * | 2008-12-10 | 2009-09-09 | 吉林凯仕达阀门有限公司 | A steel pipe welding valve |
| CN201531630U (en) * | 2009-11-24 | 2010-07-21 | 屈礼平 | Magnetic encryption stopping soft sealing valve |
| CN201705286U (en) * | 2010-04-26 | 2011-01-12 | 长江大学 | Double-stem gate valve of thermal production well head |
| CN202746628U (en) * | 2012-08-20 | 2013-02-20 | 浙江汉威阀门制造有限公司 | Back seal built-in rod sluice valve provided with solid flashboard |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121212 |