CN102174968A - Burst and back seal prevention mechanism of valve rod - Google Patents
Burst and back seal prevention mechanism of valve rod Download PDFInfo
- Publication number
- CN102174968A CN102174968A CN 201110073095 CN201110073095A CN102174968A CN 102174968 A CN102174968 A CN 102174968A CN 201110073095 CN201110073095 CN 201110073095 CN 201110073095 A CN201110073095 A CN 201110073095A CN 102174968 A CN102174968 A CN 102174968A
- Authority
- CN
- China
- Prior art keywords
- valve rod
- valve
- valve body
- ring
- projection
- 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.)
- Pending
Links
Images
Abstract
The invention provides a burst and back seal prevention mechanism, relating to the technical field of manufacturing of valves. The burst and back seal prevention mechanism comprises a valve body and a valve rod, wherein the valve rod is arranged in the valve body; an annular bulge is radially arranged on the valve rod, an annular groove matched with the annular bulge is arranged on the inner side wall of the valve body; the annular bulge is arranged in the annular groove; a seal ring is arranged between the upper end of the annular bulge and the valve body; a step is arranged at the upper part of the valve body; a retainer ring is arranged in the step; the upper end of the valve rod is penetratively arranged in a through hole at the middle part of the retainer ring; a thread is arranged at the upper end of the valve rod; the thread at the upper end of the valve rod is connected with a nut; and the nut is arranged above the retainer ring. By means of the mechanism provided by the invention, the leakage caused by looseness of fillers of the valve rod after the valve is used for a long time is avoided, the fillers can be replaced under the condition that the valve is under the pressure, and the valve rod can be prevented from loosing and bursting.
Description
Technical field
The present invention relates to a kind of manufacturing technology field of valve.
Background technique
Existing dish valve, ball valve, stopcock etc. partly turn round open-close type valve, its valve rod close arrangement is in described valve body, valve rod is an even straight-bar, after valve uses for a long time, and the valve rod appearance is loosening, promptly can cause leakage, under the pressure condition with higher, valve rod can be rushed out, if the valve that applies on the industrial chemicals of high pollution leaks, then can cause large-scale harm.
Summary of the invention
The invention provides that a kind of valve rod anti-is gone out, back seal mechanism, purpose is to solve existing valve and uses the back filler easily to leak for a long time, under the high-pressure situations, and the defective that valve rod is easily gone out.
The present invention includes valve body, valve rod, described valve rod is arranged in the described valve body, on described valve rod, be disposed radially the projection of going in ring, the annular recess that cooperates with the projection of going in ring is set on the madial wall of described valve body, described belt projection arrangements is in described annular recess, between the upper end of described belt projection and valve body, seal ring is set, top at described valve body is provided with step, in described step, baffle ring is set, the upper end of described valve rod is set in the through hole at described baffle ring middle part, upper end at described valve rod is provided with screw thread, the upper end screw thread attaching nut of described valve rod, and described nut arrangements is above described baffle ring.
The present invention is provided with the projection of going in ring on valve rod, belt projection is engaged in the valve body madial wall annular recess is set, this set can prevent that valve rod from going out, between belt protruding upper end and valve body, seal ring is set, adopt this back seal, can better prevent to leak, the screw thread and the nut of valve rod upper end are engaged on the valve body, this set is for the adjustment to valve rod, so that go in ring protruding cooperate with valve body tightr; After this mechanism can avoid the long-time use of valve, the loosening leakage that causes of stem packing, and can under valve band pressure situation, change filler, and avoid valve rod to become flexible and go out.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention.
Among the figure, 1, valve body, 2, valve rod, 3, the projection of going in ring, 4, annular recess, 5, seal ring, 6, nut, 7, baffle ring.
Embodiment
As described in Figure 1, this valve rod is anti-to be gone out, back seal mechanism, comprise valve body 1, valve rod 2, valve rod 2 is arranged in the valve body 1, on valve rod 2, be disposed radially the projection 3 of going in ring, on the madial wall of valve body 1, be provided with and projection 3 annular recess that cooperate 4 of going in ring, the projection 3 of going in ring is arranged in the described annular recess 4, between belt protruding 3 upper end and valve body, seal ring 5 is set, step is set, baffle ring 7 is set in step on the top of valve body 1, the upper end of valve rod 2 is set in the through hole at baffle ring 7 middle parts, upper end at valve rod 2 is provided with screw thread, the upper end screw thread attaching nut 6 of valve rod 2, and nut 6 is arranged in the top of described baffle ring 7.
Claims (1)
1. valve rod is anti-goes out, back seal mechanism, comprise valve body, valve rod, described valve rod is arranged in the described valve body, it is characterized in that on described valve rod, being disposed radially the projection of going in ring, the annular recess that cooperates with the projection of going in ring is set on the madial wall of described valve body, described belt projection arrangements is in described annular recess, between the upper end of described belt projection and valve body, seal ring is set, top at described valve body is provided with step, in described step baffle ring is set, the upper end of described valve rod is set in the through hole at described baffle ring middle part, in the upper end of described valve rod screw thread is set, the upper end screw thread attaching nut of described valve rod, described nut arrangements is above described baffle ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110073095 CN102174968A (en) | 2011-03-25 | 2011-03-25 | Burst and back seal prevention mechanism of valve rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110073095 CN102174968A (en) | 2011-03-25 | 2011-03-25 | Burst and back seal prevention mechanism of valve rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102174968A true CN102174968A (en) | 2011-09-07 |
Family
ID=44518183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110073095 Pending CN102174968A (en) | 2011-03-25 | 2011-03-25 | Burst and back seal prevention mechanism of valve rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102174968A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4630629A (en) * | 1986-03-07 | 1986-12-23 | General Screw Products Company | Valve with compressible valve stem and valve body seals |
| CN2417344Y (en) * | 2000-04-26 | 2001-01-31 | 中国化学工程第四建设公司高压阀门管件厂 | Inner pressure sealing and high Pressure passing through type cheek valve |
| CN1687622A (en) * | 2005-05-08 | 2005-10-26 | 台州光辉自控科技有限公司 | Ball valve with novel seal structure |
| CN201215192Y (en) * | 2008-06-20 | 2009-04-01 | 陈兰贞 | Structure improved ball-valve |
| CN201526699U (en) * | 2009-09-16 | 2010-07-14 | 南京汇高自动化控制系统有限公司 | Ball valve with long service life |
| CN202001723U (en) * | 2011-03-25 | 2011-10-05 | 扬州市西博思科技发展有限公司 | Anti-rush out/pouring sealing mechanism for valve rod |
-
2011
- 2011-03-25 CN CN 201110073095 patent/CN102174968A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4630629A (en) * | 1986-03-07 | 1986-12-23 | General Screw Products Company | Valve with compressible valve stem and valve body seals |
| CN2417344Y (en) * | 2000-04-26 | 2001-01-31 | 中国化学工程第四建设公司高压阀门管件厂 | Inner pressure sealing and high Pressure passing through type cheek valve |
| CN1687622A (en) * | 2005-05-08 | 2005-10-26 | 台州光辉自控科技有限公司 | Ball valve with novel seal structure |
| CN201215192Y (en) * | 2008-06-20 | 2009-04-01 | 陈兰贞 | Structure improved ball-valve |
| CN201526699U (en) * | 2009-09-16 | 2010-07-14 | 南京汇高自动化控制系统有限公司 | Ball valve with long service life |
| CN202001723U (en) * | 2011-03-25 | 2011-10-05 | 扬州市西博思科技发展有限公司 | Anti-rush out/pouring sealing mechanism for valve rod |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB201222192D0 (en) | Vavle vented redundant stem seal system | |
| MX2015012957A (en) | Valve seat apparatus for use with fluid valves. | |
| CN202001723U (en) | Anti-rush out/pouring sealing mechanism for valve rod | |
| CN201715015U (en) | Metal-seal fixed ball valve | |
| NO20181550A1 (en) | High opening pressure poppet valve | |
| CN102174968A (en) | Burst and back seal prevention mechanism of valve rod | |
| CN203906809U (en) | Novel single seated valve switched off precisely | |
| CN202580101U (en) | Self-sealing spherical surface valve | |
| CN203272819U (en) | Butterfly valve | |
| CN201786642U (en) | Hydraulic bonnet for diaphragm pump | |
| CN204677778U (en) | A kind of needle type valve | |
| CN202972009U (en) | Machinery soft starting valve | |
| CN204828754U (en) | Many sealed ball valves | |
| CN201487224U (en) | Cylinder valve of miniature liquefied petroleum gas steel cylinder | |
| CN202708212U (en) | Check valve with threaded valve seat | |
| CN204328009U (en) | Valve special for chlorine | |
| CN103925397B (en) | A kind of super-pressure greasing joint | |
| CN204647536U (en) | A kind of cock-type cut-off spool | |
| CN203927232U (en) | A kind of plug and water heating pipe fittings | |
| CN204805504U (en) | High low -grade handle ball valve needle of automobile operation pole | |
| CN203453497U (en) | Inflation valve | |
| CN212509620U (en) | One-piece ball valve | |
| CN202646900U (en) | Valve rod sealing device | |
| KR200437997Y1 (en) | Sealing structure for valve | |
| CN102003559B (en) | Fluid ball valve |
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: 20110907 |