CN101982681A - Bellows stop valve - Google Patents
Bellows stop valve Download PDFInfo
- Publication number
- CN101982681A CN101982681A CN 201010547142 CN201010547142A CN101982681A CN 101982681 A CN101982681 A CN 101982681A CN 201010547142 CN201010547142 CN 201010547142 CN 201010547142 A CN201010547142 A CN 201010547142A CN 101982681 A CN101982681 A CN 101982681A
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- China
- Prior art keywords
- valve rod
- valve
- threaded hole
- bellows stop
- rod
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Abstract
The invention relates to a bellows stop valve, comprising a valve rod arranged in a valve cap; wherein the lower end of the valve rod is extended into the valve clack in the valve body; the valve rod is composed of an upper valve rod and a lower valve rod, the lower part of the upper valve rod is opened with an inner threaded hole arranged at the center, the upper part of the lower valve rod is opened with an outer thread which is in fit with the inner threaded hole, and the upper part of the upper valve rod is opened with an open hole leading to the inner threaded hole from the upper end face. The invention has the advantages that not only structure is simple, operation is convenient, service life of bellows stop valve can be effectively prolonged, and safety level thereof is improved.
Description
Technical field
The present invention relates to a kind of valve, particularly a kind of bellows stop valve.
Background technique
Bellows stop valve is a valve class Cenozoic product, it is with the obvious advantage, rational in infrastructure, function admirable, sealing are reliable, easy to operate, of many uses, be applicable to inflammable, different medium occasions such as explosive, hypertoxic, toxicity fluid, high temperature heat conductive oil, vacuum, steam, water, the bellows stop valve of my department is mainly used in steam and high temperature heat conductive oil occasion, and safety class requires high; But important disadvantages is arranged also: when being used in some special occasions (as steam, poisonous gas, gas that corrosivity is strong), life of valve shortens, can't high frequencies of operation, cause production loss easily, and easily cause security incident.
Summary of the invention
The object of the present invention is to provide a kind of bellows stop valve, this device is not only simple in structure, and easy to operate, in the working life that can effectively improve bellows stop valve, improves its safety class.
Technical program of the present invention lies in: a kind of bellows stop valve, comprise the valve rod that is arranged in the valve gap, the flap in the valve body is stretched in described valve rod lower end, it is characterized in that: described valve rod is made up of upper valve rod and lower valve rod, the upper valve rod bottom offers the interior threaded hole that is positioned at the center, lower valve rod top is provided with the outside thread that cooperates with interior threaded hole, and described upper valve rod top offers the perforate of leading to interior threaded hole from the upper-end surface.
Described lower valve rod stretches out the upper valve rod place and is provided with sealing axle sleeve, offers keyway on the polished rod of lower valve rod, is provided with positioning key in it, the internal surface rubbing contact of the outer surface of described positioning key and sealing axle sleeve.
The longitudinal length of described positioning key is 10 ~ 15mm, and fit tolerance is-0.3mm.
The invention has the advantages that: 1, because the corrosivity of high temperature condition or medium is stronger, valve in use for some time, the phenomenon that valve rod occurs easily killing so that can't operate, a spot of preservative is regularly injected in upper valve rod upper end position perforate in the hole, preservative carries over hole wall and flows to stem lower portion, play rust cleaning, corrosion-resistant effect, can inject a small amount of thread looseness agent before the operation in the hole, keep about 10 minutes time, it is more smooth that operation will become.
2, handwheel appears rotating at one's discretion in valve opening and closing operation often, but flap is failure to actuate, can't reach the phenomenon that opens and closes effect, former because the thread biting locking of valve rod joint up and down, excessive moment of torsion causes the positioning key on the valve rod to be worn away, so just formed valve rod integral body doing idle circular movement, positioning key is redesigned, its yield strength obviously increases.Simultaneously effectively prolonged working life.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
With reference to figure 1, a kind of bellows stop valve, comprise handwheel (1), oiling pipeline (2), upper valve rod (3), lower valve rod (4), positioning key (5), valve gap (6), bellows (7), valve body (8), interface A, interface B, its valve rod places in the valve gap (6), the flap (9) in the valve body is stretched in described valve rod lower end, it is characterized in that: described valve rod is made up of upper valve rod (3) and lower valve rod (4), the upper valve rod bottom offers the interior threaded hole (10) that is positioned at the center, lower valve rod top is provided with the outside thread (11) that cooperates with interior threaded hole, and described upper valve rod top offers the oiling pipeline (2) that leads to interior threaded hole from the upper-end surface.
Stretch out the upper valve rod place in order to ensure the described lower valve rod of rotation and be provided with sealing axle sleeve (12), offer keyway on the polished rod of lower valve rod, be provided with positioning key (5) in it, the internal surface rubbing contact of the outer surface of described positioning key and sealing axle sleeve.
The longitudinal length of described positioning key is 10 ~ 15mm, and fit tolerance is-0.3mm.
Working principle of the present invention is as follows: because the corrosivity of high temperature condition or medium is stronger, valve in use for some time, the phenomenon that valve rod occurs easily killing so that can't operate, generation for fear of this phenomenon, in main valve stem upper end position perforate, regularly in the hole, inject a spot of preservative, preservative carries over hole wall and flows to stem lower portion, play rust cleaning, corrosion-resistant effect, can in the hole, inject a small amount of thread looseness agent before the operation, the time that keeps about 10 minutes, it is more smooth that operation will become.
Handwheel appears rotating at one's discretion in valve opening and closing operation often, but flap is failure to actuate, can't reach the phenomenon that opens and closes effect, former because the thread biting locking of valve rod joint up and down, excessive moment of torsion causes the positioning key on the valve rod to be worn away, so just form valve rod integral body and done idle circular movement, for avoiding this type of phenomenon, positioning key is redesigned, longitudinal length is increased to 10 ~ 15mm by original 3mm, and fit tolerance is reduced to-0.3mm by original-0.6mm, by redesign, its yield strength obviously increases, and has effectively prolonged the working life of bellows stop valve simultaneously.
The working procedure of bellows stop valve of the present invention is as follows: during unlatching, rotate counterclockwise handwheel, drive upper valve rod and rotate counterclockwise, by the screw-thread fit drive lower valve rod rising of upper valve rod and lower valve rod, rise thereby drive flap, this moment, valve was in opening state; When closing, clockwise rotate handwheel, drive upper valve rod and clockwise rotate, the screw-thread fit drive lower valve rod decline by upper valve rod and lower valve rod descends thereby drive flap, and valve is in closed condition.
The above only is preferred embodiment of the present invention, and all equalizations of being done according to the present patent application claim change and modify, and all should belong to covering scope of the present invention.
Claims (3)
1. bellows stop valve, comprise the valve rod that is arranged in the valve gap, the flap in the valve body is stretched in described valve rod lower end, it is characterized in that: described valve rod is made up of upper valve rod and lower valve rod, the upper valve rod bottom offers the interior threaded hole that is positioned at the center, lower valve rod top is provided with the outside thread that cooperates with interior threaded hole, and described upper valve rod top offers the perforate of leading to interior threaded hole from the upper-end surface.
2. bellows stop valve according to claim 1, it is characterized in that: described lower valve rod stretches out the upper valve rod place and is provided with sealing axle sleeve, offer keyway on the polished rod of lower valve rod, be provided with positioning key in it, the internal surface rubbing contact of the outer surface of described positioning key and sealing axle sleeve.
3. bellows stop valve according to claim 2 is characterized in that: the longitudinal length of described positioning key is 10 ~ 15mm, and fit tolerance is-0.3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010547142 CN101982681B (en) | 2010-11-17 | 2010-11-17 | Bellows stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010547142 CN101982681B (en) | 2010-11-17 | 2010-11-17 | Bellows stop valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101982681A true CN101982681A (en) | 2011-03-02 |
| CN101982681B CN101982681B (en) | 2013-01-23 |
Family
ID=43619584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010547142 Active CN101982681B (en) | 2010-11-17 | 2010-11-17 | Bellows stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101982681B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016756A (en) * | 2013-01-07 | 2013-04-03 | 李江平 | Throttling stop valve |
| CN104500831A (en) * | 2014-07-15 | 2015-04-08 | 沈永增 | Special strong-poison composite bellows valve |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB317768A (en) * | 1928-08-21 | 1930-05-29 | Internat General Electric Y | Improvements in and relating to stop valves |
| CN86207346U (en) * | 1986-09-24 | 1987-11-18 | 陈竞哲 | Lubricated valve with separation between valve rod and screw portion of valve |
| CN2085894U (en) * | 1990-10-15 | 1991-10-02 | 王迺俊 | Full-enclosed concealed-rod type valve series |
| JPH08166084A (en) * | 1994-12-13 | 1996-06-25 | Kosumetsuku:Kk | Working condition detecting device of relief valve |
| CN2288319Y (en) * | 1996-11-29 | 1998-08-19 | 贾翔泰 | Oiling globe valve |
| CN2419439Y (en) * | 1999-12-22 | 2001-02-14 | 石油大学(华东) | Device for replacing sealing ring under pressure |
| CN201096198Y (en) * | 2007-11-21 | 2008-08-06 | 董映红 | High purity high pressure gas valve |
-
2010
- 2010-11-17 CN CN 201010547142 patent/CN101982681B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB317768A (en) * | 1928-08-21 | 1930-05-29 | Internat General Electric Y | Improvements in and relating to stop valves |
| CN86207346U (en) * | 1986-09-24 | 1987-11-18 | 陈竞哲 | Lubricated valve with separation between valve rod and screw portion of valve |
| CN2085894U (en) * | 1990-10-15 | 1991-10-02 | 王迺俊 | Full-enclosed concealed-rod type valve series |
| JPH08166084A (en) * | 1994-12-13 | 1996-06-25 | Kosumetsuku:Kk | Working condition detecting device of relief valve |
| CN2288319Y (en) * | 1996-11-29 | 1998-08-19 | 贾翔泰 | Oiling globe valve |
| CN2419439Y (en) * | 1999-12-22 | 2001-02-14 | 石油大学(华东) | Device for replacing sealing ring under pressure |
| CN201096198Y (en) * | 2007-11-21 | 2008-08-06 | 董映红 | High purity high pressure gas valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016756A (en) * | 2013-01-07 | 2013-04-03 | 李江平 | Throttling stop valve |
| CN104500831A (en) * | 2014-07-15 | 2015-04-08 | 沈永增 | Special strong-poison composite bellows valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101982681B (en) | 2013-01-23 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 350209 Airport Industrial Zone, Changle District, Fuzhou City, Fujian Province (Mashan District, Hunan town) Patentee after: Fujian Yongrong Jinjiang Co., Ltd Address before: 350200 Fujian Fujian Jinjiang science and Technology Co., Ltd. Changle Fuzhou Airport Industrial Zone Patentee before: FUJIAN JINJIANG TECHNOLOGY Co.,Ltd. |