CN201170339Y - No leakage gate valve - Google Patents
No leakage gate valve Download PDFInfo
- Publication number
- CN201170339Y CN201170339Y CNU2008200551019U CN200820055101U CN201170339Y CN 201170339 Y CN201170339 Y CN 201170339Y CN U2008200551019 U CNU2008200551019 U CN U2008200551019U CN 200820055101 U CN200820055101 U CN 200820055101U CN 201170339 Y CN201170339 Y CN 201170339Y
- Authority
- CN
- China
- Prior art keywords
- valve
- flashboard
- seal ring
- valve rod
- gland
- 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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Abstract
The utility model relates to a noleakage gate valve, which comprises a valve body and a valve cover, wherein the valve body is fixed with the valve cover by a double ended bolt with the joint provided with a metal gasket; the valve cover is fixed with an upper support through the double ended bolt; the joint of the upper support and the valve cover is provided with a gland; an upper seal ring and a lower seal ring are arranged under the gland; the middle part of each seal ring has a positioning hole support; a hand wheel is arranged above the upper support; the lower end of the hand wheel is connected with the upper end of an upper valve rod positioned inside the valve cover; the lower end of the upper valve rod is connected with the upper end of the lower valve rod; the valve body is provided with a flashboard; the upper end of the flashboard is connected with the lower end of the lower valve rod; the valve body comprises a build-up welding valve seat welded on the valve body through build-up welding and a flashboard arranged inside the build-up welding valve seat; and the position on the inner surface of the build-up welding valve seat contacted with the flashboard is provided with a soft seal ring. The noleakage gate valve has the advantages that the valve rods adopt split type, thereby ensuring stable operation; moreover, gland filler is not easy to be exposed, thereby ensuring excellent sealing property; and the seal rings are replaceable and have long service life so as to reduce the cost.
Description
Technical field
The utility model relates to a kind of nothing and leaks gate valve.
Background technique
The gate valve of industrial pipeline use at present all is to adopt the two-way hard seal contact, and in a single day leakage appears in using process can't repair, and can only scrap, and causes very big waste.02284173.3 number model utility specification has been announced a kind of soft sealing gate valve, the sealing principle of this valve is an obstructive type, valve seat and flashboard, and the sealing surface point of contact all can not be processed, and quality just is difficult to be guaranteed like this.This valve is the endoporus that is shaped with the stifled inlet valve body of the flashboard of rubber, depends merely on the spring-back force of rubber surface and controls sealing.If valve body is cast some defective or trachoma, out-of-flatness etc. will cause revealing being not closed completely.In addition, the restrictor bar of existing gate valve all is all-in-one-piece, this makes that concentricity and stability between handwheel, valve rod and the flashboard are relatively poor, in routine duties, the valve switch number of times is frequent, and valve rod and nut can produce fair wear and tear, valve rod swing when causing switch, further cause the leakage of gland packing, this is the existing ubiquitous problem of gate valve.
The model utility content
The purpose of this utility model provides a kind of nothing and leaks gate valve, leaks easily to overcome existing gate valve, and working life is short, defect of high cost.
The purpose of this utility model is achieved through the following technical solutions:
A kind of nothing is leaked gate valve, comprises valve body and valve gap, fixes with stud bolt between valve body and the valve gap, and the junction is provided with metallic shim; Be fixed with upper bracket by stud bolt on the valve gap, gland is established in the junction between upper bracket and the valve gap; The top of upper bracket is provided with handwheel, and the lower end of described handwheel is connected with the upper end of the upper valve rod that is positioned at valve gap, and the lower end of upper valve rod is connected with the upper end of lower valve rod; Be provided with flashboard in the described valve body, the upper end of flashboard is connected with the lower end of lower valve rod, is provided with the built-up welding valve seat with the contacted place of flashboard on the valve interior surface, and the place that contacts with the built-up welding valve seat on the outer surface of flashboard is provided with soft seal ring.
As further improvement of the utility model, gland has seal ring, is provided with the positioning hole frame in the middle of the seal ring.Described seal ring adopts soft high-strength material to make.
As further improvement of the utility model, flashboard gradient in vertical direction is 10 degree.
The beneficial effect that nothing described in the utility model is leaked gate valve is: valve rod adopts split type, and the valve rod operation is more stable; Valve gap filler chamber adopts the structural principle of plunger valve, interfix hole frame, and the double seal circle prevents that filler leaks outside in the gland up and down; The sealing gradient of gate valve is two times of common valve, and flashboard improves the working life of sealing to the extruding of soft sealing face when reducing to close.
Description of drawings
With reference to the accompanying drawings the utility model is described in further detail below.
Fig. 1 is the structural representation that the described nothing of the utility model embodiment is leaked gate valve.
Among the figure:
1, valve body; 2, seal ring; 3, flashboard; 4, valve gap; 5, positioning hole frame; 6, gland; 7, lower valve rod; 8, upper valve rod; 9, handwheel; 10, copper nut; 11, upper bracket; 12, seal ring; 13, stud bolt; 14, metallic shim; 15, stud bolt; 16, built-up welding valve seat.
Embodiment
As shown in Figure 1, the described nothing of the utility model embodiment is leaked gate valve, comprises valve body 1 and valve gap 4, and fixing with stud bolt 15 between valve body 1 and the valve gap 4, valve body 1 and valve gap 4 junctions are provided with metallic shim 14; Be fixed with upper bracket 11 by stud bolt 13 on the valve gap 4, gland 6 is established in the junction between upper bracket 11 and the valve gap 4, and gland has seal ring 12, is provided with positioning hole frame 5 in the middle of the seal ring 12; The top of upper bracket 11 is provided with handwheel 9, the lower end of described handwheel 9 is connected with the upper end of the upper valve rod 8 that is positioned at valve gap 4, the lower end of upper valve rod 8 is connected with the upper end of lower valve rod 7, be provided with flashboard 3 in the valve body 1, flashboard gradient in vertical direction is 10 degree, and the upper end of described flashboard 3 is connected with the lower end of lower valve rod 7; Be provided with built-up welding valve seat 16 with flashboard 3 contacted places on described valve body 1 internal surface, the place that contacts with the built-up welding valve seat on the outer surface of flashboard is provided with soft seal ring.
Claims (4)
1, a kind of nothing is leaked gate valve, comprises valve body and valve gap, fixes with stud bolt between valve body and the valve gap, and the junction is provided with metallic shim; Be fixed with upper bracket by stud bolt on the valve gap, gland is established in the junction between upper bracket and the valve gap; The top of upper bracket is provided with handwheel, be provided with flashboard in the valve body, it is characterized in that: the lower end of described handwheel is connected with the upper end of the upper valve rod that is positioned at valve gap, and the lower end of upper valve rod is connected with the upper end of lower valve rod, and the lower end of lower valve rod is connected with the upper end of described flashboard; Be provided with the built-up welding valve seat with the contacted place of flashboard on the described valve interior surface, the place that contacts with the built-up welding valve seat on the outer surface of flashboard is provided with soft seal ring.
2, nothing according to claim 1 is leaked gate valve, it is characterized in that: valve rod is a separated type, divides upper valve rod and lower valve rod, in the middle of lower valve rod and the valve gap gland is arranged, and upper-lower seal ring and positioning hole frame are arranged under the gland.
3, nothing according to claim 1 is leaked gate valve, it is characterized in that: flashboard gradient in vertical direction is 10 degree.
4, nothing according to claim 1 and 2 is leaked gate valve, and it is characterized in that: described seal ring adopts soft high-strength material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200551019U CN201170339Y (en) | 2008-01-25 | 2008-01-25 | No leakage gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200551019U CN201170339Y (en) | 2008-01-25 | 2008-01-25 | No leakage gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201170339Y true CN201170339Y (en) | 2008-12-24 |
Family
ID=40209392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200551019U Expired - Fee Related CN201170339Y (en) | 2008-01-25 | 2008-01-25 | No leakage gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201170339Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216633A (en) * | 2013-04-01 | 2013-07-24 | 无锡富盛阀业有限公司 | Small-caliber gate valve |
| CN108533557A (en) * | 2018-07-02 | 2018-09-14 | 长沙理工大学 | A kind of control pressurer system |
| CN113324056A (en) * | 2021-07-06 | 2021-08-31 | 福建省开诚机械有限公司 | High-temperature and high-pressure resistant WCB valve steel casting |
-
2008
- 2008-01-25 CN CNU2008200551019U patent/CN201170339Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216633A (en) * | 2013-04-01 | 2013-07-24 | 无锡富盛阀业有限公司 | Small-caliber gate valve |
| CN108533557A (en) * | 2018-07-02 | 2018-09-14 | 长沙理工大学 | A kind of control pressurer system |
| CN108533557B (en) * | 2018-07-02 | 2019-09-06 | 长沙理工大学 | A kind of control pressurer system |
| CN113324056A (en) * | 2021-07-06 | 2021-08-31 | 福建省开诚机械有限公司 | High-temperature and high-pressure resistant WCB valve steel casting |
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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: 20081224 |