CN2408314Y - Composite double sealed wedge valve - Google Patents
Composite double sealed wedge valve Download PDFInfo
- Publication number
- CN2408314Y CN2408314Y CN 00222508 CN00222508U CN2408314Y CN 2408314 Y CN2408314 Y CN 2408314Y CN 00222508 CN00222508 CN 00222508 CN 00222508 U CN00222508 U CN 00222508U CN 2408314 Y CN2408314 Y CN 2408314Y
- Authority
- CN
- China
- Prior art keywords
- valve
- valve rod
- flashboard
- ring
- sealing
- 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
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- Sliding Valves (AREA)
Abstract
The utility model belongs to a composite double-sealed wedge gate valve which is composed of a valve body, a valve seat ring, a valve rod, a gate plate and a hand wheel. The utility model is characterized in that the gate plate is composed of a gate plate body and a press plate which are below the valve rod, and a sealing ring is arranged between the gate plate body and the press plate; a sealing ring, a sealing filler layer and a spacing ring are arranged in a valve rod hole of a valve cover at the part corresponding to the valve rod, and the lower part of the valve body is provided with a dirt discharge hole. The utility model which adopts a composite double-sealed structure has the advantages of small friction of a sealing element, good sealing performance, long service life small forced sealing force, sensitive opening and closure and convenient maintenance. The utility model is suitable for pipelines of various noncorrosive media, such as, petroleum, natural gas, urban combustion gas, chemical industry, metallurgy, etc.
Description
The utility model relates to valve, particularly a kind of Wedge gate valve.
What existing old type Wedge gate valve adopted is hard sealing structure, need very big forced seal power to realize sealing, between sealing surface, produce very big relative friction forces, easily cause the serious scratch of sealing surface, produce and leak, exist weak point in working life, opening force to require shortcomings such as height, maintenance difficult apart from big, accuracy of manufacturing.Packing seal is adopted on the top of old type Wedge gate valve mostly, and under the unlatching number of times too much or for a long time was failure to actuate situation, sealing effect was very poor.Valve body lower portion does not have pollution discharge structure, and in a single day ducted impurity be deposited in the valve, particularly on the sealing surface of flashboard, will directly influence the sealing effect of valve yet.
The purpose of this utility model is the shortcoming that exists at existing old type Wedge gate valve, and develops a kind of novel Composite Double resealing Wedge gate valve.
The purpose of this utility model is achieved through the following technical solutions:
Composite Double resealing Wedge gate valve is made up of valve body, seat ring, valve rod, flashboard, handwheel, and seat ring is embedded in the valve body, and its sealing surface is consistent with two sealing surface gradients of flashboard, it is characterized in that:
A. flashboard is to be made of flashboard body and pressing plate below the valve rod, is equiped with seal ring between flashboard body and two side guides;
B. corresponding valve rod is provided with seal ring and stuffing box packing layer in the valve rod hole of valve gap, and the stuffing box packing layer divides goes up filler and following filler, is provided with spacer ring between the upper and lower filler, the corresponding seal grease coupler of spacer ring, and the top of stuffing box packing is a gland.
Between the positioning hole of hoisting nut above the valve rod and support, be provided with thrust-bearing.
Be provided with pollutant exhaust hole in valve body lower portion, pollutant exhaust hole bolt shutoff.
Composite Double resealing Wedge gate valve according to the utility model proposes compared with prior art has the following advantages:
One. flashboard and valve rod adopt compound double sealing structure, eliminate the packing seal form, good seal performance, erosion resistance, both non-internal leakages does not have again and leaks outside.
Two. belong to soft, hard double seal between each sealing surface, Sealing frictional force is little, long service life.
Three. forced seal power is little, makes gate valve switching moment little, opens and closes sensitive, light.
Four. pollutant exhaust hole is set, can carries out blowdown to the impurity in the valve body and clean, further strengthened the sealing effect and the reliability of valve.
Five. overall structure is simple, easy to maintenance, check and change easily damaged parts easily, in, small-bore product can use manually-operable, bigbore product can adopt scroll bar transmission or electronic control, is applicable to oil, rock gas, gas and chemical industry, metallurgical various non-aggressive medium pipelines.
Fig. 1 is one of the utility model embodiment's a structural representation.
The utility model will be further described according to accompanying drawing embodiment below:
As shown in the figure, Composite Double resealing Wedge gate valve is by valve body 1, seat ring 3, valve rod 12, flashboard, handwheel 18 is formed, seat ring 3 is embedded in the valve body 1, and be provided with seal ring 2 between valve body, the main passage sealing surface of seat ring is consistent with the both sides sealing face gradient of flashboard, flashboard is made of the flashboard body 5 and the pressing plate 25 of valve rod 12 belows, step place between flashboard body 5 and two side guides 25 is equiped with double density seal 4 and 24, seal ring is fastened on the flashboard body by pressing plate and bridge screw, form flashboard thus, hard sealing of the one-level of gland and seat ring and seal ring are carried out the soft seal that secondary compensates to hard sealing, have realized double seal.
The top of valve body 1 is a valve gap 8, connect by bolt, its junction surface is established seal ring 7, corresponding valve rod 12 is arranged with seal ring 9 and stuffing box packing layer (teflon) in the valve rod hole of valve gap 8, the stuffing box packing layer divides goes up filler 11 and following filler 23, be provided with spacer ring 22 between the upper and lower filler, the corresponding seal grease coupler 10 of spacer ring, the top of stuffing box packing is a gland 13, utilize the contraction of filler under gland 13 extruding to realize primary seal, realize compensation sealing by in spacer ring 22, injecting seal grease, utilize the effect of seal ring 9 to reach the effect of double seal again.
The top of valve gap 8 connects support 14; the support upper end is a hoisting nut; be provided with thrust-bearing 21 between the positioning hole of hoisting nut and support 14; thrust-bearing is fixing by pressure cap 20, lining 15; hoisting nut top fixes with handwheel 18 by key 19, locking nut 16; the top of valve is provided with valve stem casing 17, and the screw rod on valve rod top is partly played a protective role.
Be provided with pollutant exhaust hole in valve body 1 bottom, pollutant exhaust hole by regularly pipeline being purged, washes away, is discharged impurity from pollutant exhaust hole with bolt 6 shutoff, has further guaranteed the sealing effect of gate valve.
Claims (3)
1. a Composite Double resealing Wedge gate valve is made up of valve body, seat ring, valve rod, flashboard, handwheel, and seat ring is embedded in the valve body, and its sealing surface is consistent with two sealing surface gradients of flashboard, it is characterized in that:
A. flashboard is by the flashboard body (5) and pressing plate (25) formation of valve rod (12) below, is equiped with seal ring (4,24) between flashboard body (5) and two side guides (25);
B. corresponding valve rod (12) is provided with seal ring (9) and stuffing box packing layer in the valve rod hole of valve gap (8), the stuffing box packing layer divides goes up filler (11) and following filler (23), be provided with spacer ring (22) between the upper and lower filler, the corresponding seal grease coupler (10) of spacer ring, the top of stuffing box packing is gland (13).
2. Composite Double resealing Wedge gate valve as claimed in claim 1 is characterized in that being provided with thrust-bearing (21) between the positioning hole of the hoisting nut of valve rod (12) top and support (14).
3. as claim 1,2 described Composite Double resealing Wedge gate valve, it is characterized in that being provided with pollutant exhaust hole pollutant exhaust hole bolt (6) shutoff in valve body (1) bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00222508 CN2408314Y (en) | 2000-03-14 | 2000-03-14 | Composite double sealed wedge valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00222508 CN2408314Y (en) | 2000-03-14 | 2000-03-14 | Composite double sealed wedge valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2408314Y true CN2408314Y (en) | 2000-11-29 |
Family
ID=33587227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00222508 Expired - Fee Related CN2408314Y (en) | 2000-03-14 | 2000-03-14 | Composite double sealed wedge valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2408314Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506186A (en) * | 2011-09-29 | 2012-06-20 | 博雷得工业（厦门）股份有限公司 | Slurry gate valve |
| CN103470797A (en) * | 2013-09-24 | 2013-12-25 | 宣达实业集团有限公司 | Friction-free flat gate valve resistant to high temperature and high pressure |
| CN104455509A (en) * | 2014-11-21 | 2015-03-25 | 苏州福润机械有限公司 | Gate valve |
| CN106015612A (en) * | 2016-07-27 | 2016-10-12 | 特尔阀门高科技有限公司 | Double-acting-force blow-down valve |
| CN111219505A (en) * | 2020-03-20 | 2020-06-02 | 大连海事大学 | Bidirectional air valve kit of underwater robot sealed cabin and air nozzle matched with same |
| CN114576379A (en) * | 2022-01-28 | 2022-06-03 | 大连理工大学 | Self-adaptive assembly large-diameter nuclear power wedge-shaped gate valve and installation method |
-
2000
- 2000-03-14 CN CN 00222508 patent/CN2408314Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506186A (en) * | 2011-09-29 | 2012-06-20 | 博雷得工业（厦门）股份有限公司 | Slurry gate valve |
| CN103470797A (en) * | 2013-09-24 | 2013-12-25 | 宣达实业集团有限公司 | Friction-free flat gate valve resistant to high temperature and high pressure |
| CN104455509A (en) * | 2014-11-21 | 2015-03-25 | 苏州福润机械有限公司 | Gate valve |
| CN106015612A (en) * | 2016-07-27 | 2016-10-12 | 特尔阀门高科技有限公司 | Double-acting-force blow-down valve |
| CN106015612B (en) * | 2016-07-27 | 2018-04-17 | 特尔阀门高科技有限公司 | Dual force drain valve |
| CN111219505A (en) * | 2020-03-20 | 2020-06-02 | 大连海事大学 | Bidirectional air valve kit of underwater robot sealed cabin and air nozzle matched with same |
| CN114576379A (en) * | 2022-01-28 | 2022-06-03 | 大连理工大学 | Self-adaptive assembly large-diameter nuclear power wedge-shaped gate valve and installation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |