CN2427697Y - Protection type plat surface peripheral line sealing type gate valve - Google Patents
Protection type plat surface peripheral line sealing type gate valve Download PDFInfo
- Publication number
- CN2427697Y CN2427697Y CN 00206610 CN00206610U CN2427697Y CN 2427697 Y CN2427697 Y CN 2427697Y CN 00206610 CN00206610 CN 00206610 CN 00206610 U CN00206610 U CN 00206610U CN 2427697 Y CN2427697 Y CN 2427697Y
- Authority
- CN
- China
- Prior art keywords
- valve
- valve rod
- guard
- protecting
- protecting element
- 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 gate valve which makes use of the functions of a secondary protecting valve (which is a patent). A screw nut which is used for opening and cutting off a valve is arranged in a valve cover and is connected with embedded ports on a valve rod protecting sleeve which is used as a peripheral element. A valve rod which is protected in a pipe network medium by the valve rod protecting sleeve can be prevented from being exposed and corroded. A primary protecting element is compressed by adopting a plane circumference sealing mode to reach a purpose that the primary protecting element can be conveniently replaced. Meanwhile, a secondary protecting element which circles the valve rod is arranged in the valve. When a handwheel is rotated to move the valve rod to an upper end, a valve rod retaining ring tightly presses the secondary protecting element. The secondary protecting element plays a sealing role and prevents liquid or gas in the valve from leaking out. Therefore, a purpose that the primary protecting element can be repaired or replaced without cutting off a pipeline.
Description
The utility model relates to a kind of gate valve that uses in pipe network, pipelines such as water supply, heat supply, chemical industry.
At present, the gate valve that in industry pipe network, pipelines such as water supply, heat supply, chemical industry, uses, mainly contain formations such as valve body, valve gap, valve rod, flashboard, gland, valve rod is the operating handle of a flashboard in the valve external operating valve door, valve rod one end connects the flashboard in the valve, and an end connects the outer handwheel of valve.Liquid or gas in the valve are easy to release along valve rod.Its sealing means is with filler (for sake of convenience; this paper is called the dispensable mould guard member) the clasping valve rod exerts pressure to guard member by gland and seals gap between valve rod and the valve gap; because the needs of unlatching or Shuttoff Valve; valve rod need move up and down because of valve rod exposes very easily corrosion in the environment of air or humidity, causes an impaired leakage of guard member.
The purpose of this utility model provides a kind of novel gate valve, and it can prevent that valve rod from exposing corrosion, when avoiding valve rod to move up and down, guard member is damaged caused liquid or gas leaks along operating handle, and be convenient to repair and change the purpose of a guard member.
The purpose of this utility model is to realize like this, operating handle is set to be made of valve rod and valve guard, the upper end of valve guard is connected with handwheel, the lower end be connected at the valve gap inner nut, this nut can rotate with valve guard, and its internal thread cooperates with the outside thread of valve rod, when nut rotates with valve guard, valve rod moves up and down, the upper end turnover valve guard of valve rod; The top that valve guard is set is different with the outside diameter of bottom, forms a circular seal plane on valve guard.This plane and peripheral element valve gap upper end surface ought screw pressure cap at grade a guard member is exerted pressure, and can seal the purpose in its plane and circumference gap effectively.
The utility model only needs the structure of former valve is changed slightly; operating handle (valve rod of former valve) is divided into valve rod and valve guard; valve guard top and the bottom outside diameter difference is set to produce an annular seal plane; one nut is set in valve gap; its structure is also uncomplicated, but can effectively improve the life-span and the sealing reliability of a guard member.
In conjunction with the accompanying drawings the utility model is elaborated with one.
Accompanying drawing is the utility model one embodiment's a concrete structure longitudinal sectional drawing.
As shown in the figure, lining (3) embedding valve body (1) flashboard (4) hangs over valve rod (5) and upward wales flashboard (4) with steel wire card (6), and nut (11) is connected with valve guard (17) mother-son mouth, and handwheel (18) is fastened on the valve guard by nut (19).Valve guard (17) top and the bottom diameter difference is set, forms the annular seal plane, a guard member (16) is subjected to pressure cap (15) extruding and presses the circular seal plane.
When rotation hand wheel (18), valve guard (17) drives nut (11) and rotates, and the valve rod (5) that combines with nut (11) screw thread moves up and down thereupon, and flashboard (4) moves up and down with valve rod (5) and opens or Shuttoff Valve.When Shuttoff Valve, valve rod (5) imposes on tension to flashboard (4) simultaneously up and down with push rod (2) and seals the purpose that the import and export of valve reach the shutoff pipeline.As seen, in the unlatching or turn off process of valve, the supreme motion down of valve guard (17) is so can be provided with the circular seal plane on valve guard (17).
When in use, a guard member (16) sealing effect reduces, and rotatable pressure cap (15) to a guard member (16) pressurization, improves the effect of its sealing.Because the power thrusts of pressure cap is vertical with the annulus sealing plane, in using process, the rotation pressure cap can effectively improve the guard member sealing one time.
Second protection spare (8) embeds the valve gap bottom, and when flashboard (4) moved to the upper end, the back-up ring on the valve rod (5) pressed closer second protection spare (8), and second protection spare plays seal action; Second protection spare (8) embeds the valve gap bottom, and Sealing (7) is by the gap between bolt (10) sealed valve cap (9) and the valve body (1), and Sealing (12) is by the gap between bolt (13) sealed valve cap (9) and the gland (14).Pressure cap (15) is spun on by screw thread and compresses a guard member (16) on the gland (14).
In normal using process, drive nut (11) rotation by rotation hand wheel (18), valve rod (5) flashboard (4) is moved up and down, close to reach, the effect of unlatching and regulating valve, because a guard member (16) is in pressured state all the time, and valve guard (17) is a rotating component, so be easy to impaired than second protection spare; Second protection spare is pressurized not under normal conditions, is difficult for impaired.When the needs reparation or when changing a guard member (17); rotation hand wheel (18); valve rod (5) is mentioned highest order, make the ring washer on the valve rod (5) compress second protection spare (8), second protection spare (8) is sealed the gap between valve rod (5) and the valve gap (9) and is played seal action.A guard member (16) is repaired or changed to detachable lower pressing cap this moment (15), and after the reparation, rotation hand wheel (18) makes the valve opening degree to desired location, removes the pressurized of second protection spare (8).Thereby reach the effect that does not stop pipe network operation and repair valve leak.
Claims (1)
- A kind of protection type planar circumferential linear sealing formula gate valve is provided with operating handle and is made of valve rod and valve guard, and the upper end of valve guard is connected with handwheel, the lower end be connected at valve valve gap inner nut, the screw thread of nut cooperates with the outside thread of valve rod; It is characterized in that: the top that valve guard is set is different with the outside diameter of bottom; on valve guard, form an annular seal plane; this plane and peripheral element valve gap upper end surface screw pressure cap a guard member are exerted pressure at grade, and a guard member is squeezed on this plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00206610 CN2427697Y (en) | 2000-03-09 | 2000-03-09 | Protection type plat surface peripheral line sealing type gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00206610 CN2427697Y (en) | 2000-03-09 | 2000-03-09 | Protection type plat surface peripheral line sealing type gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2427697Y true CN2427697Y (en) | 2001-04-25 |
Family
ID=33574499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00206610 Expired - Fee Related CN2427697Y (en) | 2000-03-09 | 2000-03-09 | Protection type plat surface peripheral line sealing type gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2427697Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103317295A (en) * | 2012-03-22 | 2013-09-25 | 宝山钢铁股份有限公司 | Oxygen valve online repairing method |
-
2000
- 2000-03-09 CN CN 00206610 patent/CN2427697Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103317295A (en) * | 2012-03-22 | 2013-09-25 | 宝山钢铁股份有限公司 | Oxygen valve online repairing method |
| CN103317295B (en) * | 2012-03-22 | 2015-11-25 | 宝山钢铁股份有限公司 | The online restorative procedure of a kind of oxygen valve |
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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 |