CN103244695A - Internal pressure type bellows globe valve with non-rotary valve rod - Google Patents
Internal pressure type bellows globe valve with non-rotary valve rod Download PDFInfo
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- CN103244695A CN103244695A CN2013101897005A CN201310189700A CN103244695A CN 103244695 A CN103244695 A CN 103244695A CN 2013101897005 A CN2013101897005 A CN 2013101897005A CN 201310189700 A CN201310189700 A CN 201310189700A CN 103244695 A CN103244695 A CN 103244695A
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- bellows
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Abstract
The invention relates to an internal pressure type bellows globe valve with a non-rotary valve rod. The internal pressure type bellows globe valve with the non-rotary valve rod comprises a valve body, a valve rod, a bellows connector, a special metal bellows, a valve cover, filter, a regulating part, a bearing support, steel balls, a valve rod nut, a shaft sleeve and the like. The two ends of the special metal bellows are respectively connected with the valve rod and the bellows connector in a welding mode and the bellows connector is connected with the inner end face of the valve cover in a welding mode to form into pressed open screen seal inside the special metal bellows. The middle of the valve rod and the internal of the valve cover are provided with opening termination back seal structures; the filter is arranged inside the middle of the valve cover; the bearing support is arranged inside the regulating part; a plurality of steel balls are arranged between external steps of the valve rod nut and the shaft sleeve; and axial positioning is performed through the shaft sleeve to form into a ball bearing structure. Valve rod screw threads are matched with the valve rod nut and a rotary handle or hand wheel drives the valve rod nut to rotate to achieve linear lifting motion of the valve rod without rotation, closing of the valve and opening of multi-layer seal guarantee. The internal pressure type bellows globe valve with the non-rotary valve rod is safe and reliable in performance and portable to use.
Description
Technical field
The present invention relates to poisonous, keying and control gear that radioactivity or hazardous medium such as inflammable and explosive are arranged in all kinds of instrument of industrial automation control system (flow, differential pressure, pressure, liquid level etc.) pipeline and other industrial pipeline.
Background technique
The structure of the stop valve of extensive use is all prevented the external leakage sealing by last filler, owing to there is motion between filler and the valve rod, produce inevitable friction and wear factor, thereby structurally exist the possibility of leakage, and some medium (as: high temperature, high pressure, poisonous, inflammable, explosive, have radioactivity etc. that safety, environment and biological health are worked the mischief) has not allowed to leak outside.
The present bellows stop valve structure of China is single, can only be applied under the working condition of low pressure, low temperature and security medium, and working life is short, is not suitable for high temperature, high pressure and occasion dangerous or that may damage environment, life.
Summary of the invention
The object of the present invention is to provide a kind of valve rod not rotate the internal pressure type bellows stop valve, directly weld and vertical placing between valve body, valve gap, the adjusting element with the special-purpose metal bellows with integrated valve rod, carry out closing sealing, the spacious sealing of wavy metal tube panel, opening valve and stop back seal and packing seal quadruple sealing guarantee of valve, valve rod does not rotate high temperature, the high pressure of straight line elevating movement, the bellows stop valve of high reliability.
Technological scheme of the present invention is:
1, a kind of valve rod does not rotate the internal pressure type bellows stop valve, and it is made up of valve body, valve rod, corrugated pipe connector, special-purpose metal bellows, valve gap, filler, adjusting element, bearing support, steel ball, Stem Mut, axle sleeve etc.It is characterized in that: with an end and the valve rod welding of special-purpose metal ripple, the other end and corrugated pipe connector welding, corrugated pipe connector and the welding of valve gap interior edge face also place valve gap inside, form the spacious sealing of special-purpose metal bellows interior pressurized screen.The filler two ends have Packing seat to place middle part in the valve gap respectively, screw in and compress adjusting element and make filler tightly embrace valve rod can not to rotate, and form locking locknut location after the packing seal structure.The outer step of bearing support and Stem Mut and the steel ball that the circumference between the axle sleeve is being arranged several same sizes are arranged in the inside of adjusting element, undertaken after the adjustment of gap locknut being locked by axle sleeve, Stem Mut is rotated and axially locating easily lubricatedly, be combined into ball bearing structure.Threaded stem cooperates with Stem Mut, and the top of Stem Mut installs and fixes handle or handwheel, and rotatable handle or handwheel drive the Stem Mut rotation, realizes that valve rod does not rotate the straight line elevating movement.
2, special-purpose metal bellows, process after overlapping by one to multiple layer thin metallic tubd, determine the different number of plies and wall thickness respectively according to the height of valve pressure and temperature, its length, the pitch of waves, wave number and inner and outer diameter design according to technical parameters such as the flow of valve, latus rectum, switching paths.
3, valve rod plunger tip and valve body center communication port closure during throttle down form first road and close sealing; Valve rod rises when opening valve, and the interior step closure of the reverse circular cone of valve rod and valve gap forms and oppositely stops back seal, and the spacious sealing of special-purpose metal bellows interior pressurized metal screen simultaneously and packing seal structure have realized the quadruple seal protection.
4, can add the reinforcement of weld sealing between valve body end and the valve gap.
Advantage of the present invention and beneficial effect are:
1, the present invention adopts the spacious sealing of special-purpose metal bellows interior pressurized metal screen and metal o-ring hard sealing structure; high temperature high voltage resistant sealability excellence, reliable; close sealing again, open termination back seal and packing seal protection; realized that quadruple sealing ensures, be specially adapted to high temperature, high pressure and aspects such as health, safety, environment had medium and the occasion of harm.
2, the present invention adopts steel ball rolling lubrication rotary valve rod nut structure, valve rod, special-purpose metal bellows and packing seal all concentrate on the valve rod one, filler is tightly embraced valve rod and can not be rotated and the straight line elevating movement, greatly alleviate frictional force and wear extent between filler and the valve rod, improved working life and the handling of valve greatly.
3, the present invention adopts valve open to stop the back seal structure dexterously, has cut off the influence of MEDIA FLOW to component inside, top effectively, defines the stroke of valve switch, protects and improved fatigue strength and the working life of bellows greatly.
Description of drawings
Fig. 1 does not rotate the sectional structure chart of internal pressure type bellows stop valve for valve rod.
Among the figure: 1, valve body 1-1, valve body end 2, valve rod 2-1, valve rod plunger tip 2-2, valve rod step 2-3, reverse circular cone 3, corrugated pipe connector 4, special-purpose metal seal ring 5, special-purpose metal bellows 5-1, pipe end face 5-2, pipe end face 6, valve gap 6-1, valve gap interior edge face 6-2, interior step 7, Packing seat 8, filler 9, adjusting element 10, locknut 11, bearing support 12, steel ball 13, Stem Mut 14, locknut 15, axle sleeve 16, handle or handwheel 17, packing ring 18, nut
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
1, a kind of valve rod does not rotate the internal pressure type bellows stop valve, and it is made up of valve body (1), valve rod (2), corrugated pipe connector (3), special-purpose metal bellows (5), valve gap (6), filler (8), adjusting element (9), bearing support (11), steel ball (12), Stem Mut (13), axle sleeve (15) etc.It is characterized in that: with an end and valve rod step (2-2) welding of special-purpose metal ripple (5), the other end and corrugated pipe connector (3) welding, corrugated pipe connector (3) welds and places valve gap (6) inside with valve gap interior edge face (6-1), forms the spacious sealing of the inner pressurized screen of special-purpose metal bellows (5).Filler (8) two ends have Packing seat (7) to place middle part in the valve gap (5) respectively, screw in and compress adjusting element (9) and make filler (8) tightly embrace valve rod (2) to form sealing and can not rotate locking locknut (10) location.The outer step of bearing support (11) and Stem Mut (13) and the steel ball (12) that the circumference between the axle sleeve (15) is being arranged several same sizes are arranged in the inside of adjusting element (9), undertaken after the adjustment of gap locknut (14) being locked by axle sleeve (15), Stem Mut (13) is easily rotated and axially locating lubricatedly, be combined into ball bearing structure.Valve rod (2) screw thread cooperates with Stem Mut (13), and the top of Stem Mut (13) installs and fixes handle or handwheel (16), and rotatable handle or handwheel (16) drive Stem Mut (13) rotation, realizes that valve rod (2) does not rotate the straight line elevating movement.
2, special-purpose metal bellows (5), process after overlapping by one to multiple layer thin metallic tubd, determine the different number of plies and wall thickness respectively according to the height of valve pressure and temperature, its length, the pitch of waves, wave number and inner and outer diameter design according to technical parameters such as the flow of valve, latus rectum, switching paths.
3, valve rod plunger tip (2-1) and valve body (1) center communication port closure during throttle down form first road and close sealing; Valve rod when opening valve (2) rises; interior step (6-2) closure of the reverse circular cone (2-3) of valve rod (2) and valve gap (6); form and oppositely stop back seal, the spacious sealing of the inner pressurized metal screen of special-purpose metal bellows (5) simultaneously and packing seal structure have realized the quadruple seal protection.
Can add the reinforcement of weld sealing between valve body end (1-1) and the valve gap (5).
Claims (2)
1. a valve rod does not rotate the internal pressure type bellows stop valve, and it is made up of valve body (1), valve rod (2), corrugated pipe connector (3), special-purpose metal bellows (5), valve gap (6), filler (8), adjusting element (9), bearing support (11), steel ball (12), Stem Mut (13), axle sleeve (15) etc.It is characterized in that: with an end and valve rod step (2-2) welding of special-purpose metal ripple (5), the other end and corrugated pipe connector (3) welding, corrugated pipe connector (3) welds and places valve gap (6) inside with valve gap interior edge face (6-1), forms the spacious sealing of the inner pressurized screen of special-purpose metal bellows (5).
2. do not rotate the internal pressure type bellows stop valve according to the described valve rod of claim 1, it is characterized in that: valve rod when opening valve (2) rises, and interior step (6-2) closure of the reverse circular cone (2-3) of valve rod (2) and valve gap (6) forms and oppositely stops back seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101897005A CN103244695A (en) | 2013-05-17 | 2013-05-17 | Internal pressure type bellows globe valve with non-rotary valve rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101897005A CN103244695A (en) | 2013-05-17 | 2013-05-17 | Internal pressure type bellows globe valve with non-rotary valve rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103244695A true CN103244695A (en) | 2013-08-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101897005A Pending CN103244695A (en) | 2013-05-17 | 2013-05-17 | Internal pressure type bellows globe valve with non-rotary valve rod |
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| CN (1) | CN103244695A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089035A (en) * | 2014-07-21 | 2014-10-08 | 江苏星河阀门有限公司 | Valve rod irrotational structure of corrugated pipe check valve |
| CN106969158A (en) * | 2017-05-25 | 2017-07-21 | 五洲阀门股份有限公司 | A kind of high-temperature bellow valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2823709Y (en) * | 2005-09-14 | 2006-10-04 | 杨连成 | Bellows butterfly valve |
| CN2871988Y (en) * | 2005-12-20 | 2007-02-21 | 金克雨 | Cut-off valve of bellows |
| CN201202883Y (en) * | 2008-06-18 | 2009-03-04 | 季忠贤 | Pneumatic corrugated pipe ball valve |
| CN101655159A (en) * | 2009-09-10 | 2010-02-24 | 方建生 | Full-seal zero-leakage stop valve |
| CN203272820U (en) * | 2013-05-17 | 2013-11-06 | 江苏星河阀门有限公司 | Valve rod non-rotating internal pressing type corrugated pipe stop valve |
-
2013
- 2013-05-17 CN CN2013101897005A patent/CN103244695A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2823709Y (en) * | 2005-09-14 | 2006-10-04 | 杨连成 | Bellows butterfly valve |
| CN2871988Y (en) * | 2005-12-20 | 2007-02-21 | 金克雨 | Cut-off valve of bellows |
| CN201202883Y (en) * | 2008-06-18 | 2009-03-04 | 季忠贤 | Pneumatic corrugated pipe ball valve |
| CN101655159A (en) * | 2009-09-10 | 2010-02-24 | 方建生 | Full-seal zero-leakage stop valve |
| CN203272820U (en) * | 2013-05-17 | 2013-11-06 | 江苏星河阀门有限公司 | Valve rod non-rotating internal pressing type corrugated pipe stop valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089035A (en) * | 2014-07-21 | 2014-10-08 | 江苏星河阀门有限公司 | Valve rod irrotational structure of corrugated pipe check valve |
| CN106969158A (en) * | 2017-05-25 | 2017-07-21 | 五洲阀门股份有限公司 | A kind of high-temperature bellow valve |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130814 |