CN202746628U - Back seal built-in rod sluice valve provided with solid flashboard - Google Patents
Back seal built-in rod sluice valve provided with solid flashboard Download PDFInfo
- Publication number
- CN202746628U CN202746628U CN201220411467.1U CN201220411467U CN202746628U CN 202746628 U CN202746628 U CN 202746628U CN 201220411467 U CN201220411467 U CN 201220411467U CN 202746628 U CN202746628 U CN 202746628U
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- Prior art keywords
- valve
- flashboard
- rod
- screw rod
- solid
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- Expired - Lifetime
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Abstract
The utility model discloses a back seal built-in rod sluice valve provided with a solid flashboard. The back seal built-in rod sluice valve provided with the solid flashboard comprises a valve body, a valve deck, a valve rod, a screw rod, the flashboard and a hand wheel, wherein a support frame is arranged on the valve deck, the valve rod is arranged in a hollow cavity formed by the support frame and the inside of the valve deck, the upper end of the valve rod is connected with the hand wheel arranged on the support frame in a T-shaped groove shape, the lower section of the valve rod is hollow, the end portion of the valve rod is provided with a nut, the screw rod is arranged inside a screw rod cavity formed by the valve deck and the inside of the valve body to be matched with the nut in a screwing mode, and the lower end of screw rod is connected with the flashboard. The back seal built-in rod sluice valve provided with the solid flashboard has the advantages of being good in sealing performance, long in service life, strong in pressure resistant capacity of the flashboard, erosion resistant, convenient to repair and install, and the like.
Description
Technical field
The utility model belongs to valve technology field, particularly oil, chemical industry and water supply line inside screw non-rising stem type gate valve.
Background technique
At present, oil, chemical industry and water supply line comprise the 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 owing to the change of its up-down mode, so that there is the through hole of valve rod size in the middle of the flashboard, so that the compression resistance of flashboard and anti-erosion property reduce, the defective of this two aspect has reduced the working life of valve.
Summary of the invention
The purpose of this utility model is to overcome the defective of prior art, and 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, the utility model has adopted following technical proposal: the utility model 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; Described valve rod upper end is T-shaped 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 on and is spiral with nut in the screw rod chamber that valve gap and valve inner form and cooperates, and the lower end of screw rod is connected with flashboard.
Wherein, described screw rod and flashboard is connected to T-shaped groove clamping.
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 utlity model has following advantage:
(1) is provided with chamfer surface on the screw rod inserted part, realizes that back seal and filler to the double seal of valve, have reduced dielectric leakage and medium to the erosion of filler, prolonged the working life of valve;
(2) screw rod adopts draw-in groove to be connected with flashboard, without through hole, so that the realization of ono-rising-stem valve flashboard is solid, has strengthened flashboard compressive strength and abrasion-resistance;
(3) described inside screw non-rising stem type gate valve valve rod and medium have been avoided the corrosion of medium to valve rod without directly contacting;
(4) described valve uses flexibly, and is easy to installation and maintenance quick, effectively saved the valve maintenance cost.
Below with reference to drawings and Examples, the utility model is described in detail.
Description of drawings
Fig. 1 is the structural representation of the utility model inside screw non-rising stem type gate valve;
Fig. 2 is the structural representation of the utility model valve rod;
Fig. 3 is the structural representation of the utility model screw rod.
Embodiment
See also Fig. 1-3, the solid gate plate type 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 by bolt, and support 7 is arranged on the valve gap 6 by 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° angle 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 by T-shaped keyway with handwheel 2, and valve rod 3 hypomeres are hollow section 31; Screw rod shaft 41 is provided with trapezoidal outside thread, is provided with the nut 32 that cooperates with trapezoidal outside thread on hollow section 31 terminations; Being provided with 5 one-tenth T-shaped groove snap fits of groove and flashboard on the inserted part 42 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° angle 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 so that this gate valve has the double seal effect, has realized simultaneously inside screw non-rising stem type gate valve flashboard solid construction, 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; Described valve rod upper end is T-shaped 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 on and is spiral with nut in the screw rod chamber that valve gap and valve inner form and cooperates, 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: described screw rod and flashboard be connected to T-shaped groove clamping.
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, it is characterized in that: screw rod comprises 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, it is characterized in that: screw rod comprises 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 |
|---|---|---|---|
| CN201220411467.1U CN202746628U (en) | 2012-08-20 | 2012-08-20 | Back seal built-in rod sluice valve provided with solid flashboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220411467.1U CN202746628U (en) | 2012-08-20 | 2012-08-20 | Back seal built-in rod sluice valve provided with solid flashboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202746628U true CN202746628U (en) | 2013-02-20 |
Family
ID=47706027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220411467.1U Expired - Lifetime CN202746628U (en) | 2012-08-20 | 2012-08-20 | Back seal built-in rod sluice valve provided with solid flashboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202746628U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102818039A (en) * | 2012-08-20 | 2012-12-12 | 浙江汉威阀门制造有限公司 | Back seal solid gate plate non-rising stem gate valve |
-
2012
- 2012-08-20 CN CN201220411467.1U patent/CN202746628U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102818039A (en) * | 2012-08-20 | 2012-12-12 | 浙江汉威阀门制造有限公司 | Back seal solid gate plate non-rising stem gate valve |
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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 |
Granted publication date: 20130220 |
|
| CX01 | Expiry of patent term |