CN2384051Y - Low-temp bellows stop valve - Google Patents
Low-temp bellows stop valve Download PDFInfo
- Publication number
- CN2384051Y CN2384051Y CN 99232058 CN99232058U CN2384051Y CN 2384051 Y CN2384051 Y CN 2384051Y CN 99232058 CN99232058 CN 99232058 CN 99232058 U CN99232058 U CN 99232058U CN 2384051 Y CN2384051 Y CN 2384051Y
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- valve
- valve rod
- bellows
- rod
- head
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- Expired - Fee Related
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Abstract
The utility model discloses a low-temperature bellows stop valve. A bellows (6) is sheathed outside the lower end of a valve rod (4). The lower end of the bellows (6) is welded with a valve head (2) together, and the upper end is welded with a valve cap together. The utility model has the advantages of small moving resistance of the valve rod, labor-saving operation, long service life, good sealing performance, no leakage, etc.
Description
The utility model relates to a kind of stop valve, relates in particular to a kind of cryogenic globe valve that is used for low-temperature industrial pipeline control media flow and plays on-off action.
Existing cryogenic globe valve, valve head open and pass and aperture thereof are to realize by moving up and down of valve rod, and moving up and down of valve rod is to form screw pair by the outside thread on it with the internal thread that is fixed on the outer nut on the valve body to realize.So the motion of valve body is a circular movement and straight-line synthetic, valve rod and the valve stem cylinder that is in contact with it, valve rod and the valve gap contacting point etc. that produces relative movement is between stainless sense steel member of the same race directly that face contacts in addition, the sassafras resistance that rubs is big, make the valve rod operation require great effort, resistance to motion is big, often kill phenomenon, cause valve to be scrapped.Simultaneously also make the filler rate of wear of stem packing letter fast, cause easily leaking, frosting, icing phenomenon appear in the valve outside when serious, are freezed to death in valve rod transmission position, make the valve cisco unity malfunction.
It is little that the purpose of this utility model just provides a kind of stem movement resistance, rapid operation, and long service life, sealability is reliable, leak free new type low temperature bellows stop valve.
The purpose of this utility model is achieved in that a kind of low temperature bellows stop valve that is made of valve body, valve head, valve gap, valve rod, valve stem cylinder and valve rod valve head bindiny mechanism etc., its structural feature is: valve rod hypomere overcoat bellows, the lower end of bellows and valve head top weld together, and the upper end and the valve gap of bellows weld together.
Above-mentioned valve stem cylinder inwall lower thread build-in has the valve stem cylinder copper sheathing.
A kind of the constituting of above-mentioned valve rod valve head bindiny mechanism: valve rod is divided into two sections of steel upper valve rod and copper lower valve rods, and lower valve rod is fixedlyed connected with valve head; Be inserted in the circular trough on lower valve rod top the upper valve rod lower end, has the aperture that several embed steel ball on this circle cell wall, has a circle on the lower end side of upper valve rod and be used for the curve bath that steel ball rolls.
The another kind of valve rod valve head bindiny mechanism constitutes: be inserted in the circular trough of valve head the valve rod lower end, has the aperture that several embed steel ball on this circle cell wall, has a circle on the lower end side of valve rod and be used for the curve bath that steel ball rolls.The screw thread build-in has the valve head copper sheathing on the circular cell wall of valve head.
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1. be the utility model embodiment one sectional structure schematic representation.
Fig. 2 is the valve hole part sectional structure enlarged diagram in the utility model embodiment one valve body.
Fig. 3 is the utility model embodiment two a sectional structure schematic representation.
Fig. 4 is each the parts sectional structure enlarged diagram of spool in the utility model embodiment two valve bodies.
Fig. 1, Fig. 2 illustrate, the utility model embodiment one specifically constitutes: in a kind of low temperature bellows stop valve that is made of valve body 1, valve head 2, valve gap 3, valve rod 4, valve stem cylinder 5 and valve rod valve head bindiny mechanism etc., valve rod 4 hypomere overcoat bellowss 6, the lower end of bellows 6 and valve head 2 tops weld together, and the upper end of bellows 6 and valve gap 3 weld together
Valve stem cylinder (5) inwall lower thread build-in has valve stem cylinder copper sheathing (10).
Fig. 1, Fig. 2 also illustrate, and embodiment one valve rod valve head bindiny mechanism constitutes: valve rod 4 is divided into two sections of steel upper valve rod 4a and copper lower valve rod 4b, and lower valve rod 4b is fixedlyed connected with valve head 2; Upper valve rod 4a is inserted in the lower end in the circular trough (12) on lower valve rod 4b top, has the aperture 8 that several embed steel ball (7) on this circular trough (12) wall, has a circle on the lower end side of upper valve rod 4a and is used for the curve bath 9 that steel ball 7 rolls.
Fig. 3, Fig. 4 illustrate, and the utility model embodiment two is except that valve rod valve head bindiny mechanism, and the remaining part all structure with embodiment one is identical.Embodiment two valve rod valve head bindiny mechanism constitutes: be inserted in the circular trough of valve head 2 valve rod 4 lower ends, have on this circle cell wall several embed steel ball 7 ' aperture 8 ', have on the lower end side of valve rod 4 circle be used for the curve bath 9 of steel ball 7 ' rolling '.The screw thread build-in has valve head copper sheathing 11 on the circular cell wall of valve head 2.
Steel ball 7,7 of the present utility model ' and aperture 8,8 ' be generally 3-6, certain also passable more than 6.
Of the present utility modelly can be adopted existing stainless steel double-layer hydraulic bellows or stainless steel stacked bellows by the line pipe.
Fig. 1, Fig. 2 illustrate, embodiment one working principle and process are: because valve head 2 welds together through bellows 6 with valve gap 3, valve gap 3 is fastened on again on the valve body 1, so valve head 2 and the following valve body 4b that is connected with it can not rotate, the stretchability of bellows 6 but makes valve head 2 and lower valve rod 4b move up and down.Rotate handwheel and make that upper valve rod 4a is the same with existing stop valve to be produced circular movement simultaneously and move up and down, drive lower valve rod 4b and valve head 2 move up and down, and make valve opening or close.But lower valve rod 4b and valve head 2 do not rotate with upper valve rod 4a.But upper valve rod 4a lower end relatively rotates in the circular trough (12) of upper valve rod 4b.
Fig. 3, Fig. 4 illustrate, and embodiment two working principle and process and embodiment one are basic identical: it also is converted to the circular movement of valve rod 4 valve head 2 and only moves up and down with moving up and down, to open or throttle down.
Compared with prior art, the utlity model has following advantage.
1, the valve body resistance of motion is little, rapid operation, long service life. When valve rod or its lower valve rod rotate in circular trough, Steel ball rolls in deep-slotted chip breaker and aperture, and the sassafras that rubs of become sliding is the rolling sassafras that rubs, and resistance reduces greatly; Stainless valve rod Or upper valve rod is when rotating, and is copper with valve stem cylinder copper sheathing, valve head copper sheathing or the copper lower valve rod of its close contact and does. Copper, steel Contact, frictional force is little, and motion is light, rapid operation. And avoided two kinds of stainless steel components directly contact, Frictional resistance produces greatly and kills phenomenon, scraps valve. Valve is greatly improved service life.
2, sealing property is reliable, does not have to leak, and is easy to maintenance. Bellows one end and valve head weld together the other end Weld together with valve gap, valve rod or lower valve rod are enclosed in motion in the flexible bellows, consist of valve head, valve gap in addition Separately member all weld, be fastened as a whole, valve gap is tightened on valve body, so that when work enters body cavity Medium do not have any space and can let out. The shortcoming of having avoided existing stop valve to leak from the filler fray. Even ripple The line pipe damages, and also has the secondary seal of valve stem cylinder top seal filler, has guaranteed that the valve seal performance is very reliable. Make Get the utility model and can use at-196 ℃-+70 ℃, be specially adapted to hazardous medium, can be thorough under Cryogenic Conditions Frost is removed at the end. After bellows damages, the valve gap that only need dismantle and screw, the new bellows of again burn-oning reinstalls Get final product, it is very convenient to keep in repair.
Claims (5)
1, a kind of low temperature bellows stop valve, by formations such as valve body (1), valve head (2), valve gap (3), valve rod (4), valve stem cylinder (5) and valve rod valve head bindiny mechanisms, it is characterized in that: the lower end and the valve head (2) of described valve rod (4) hypomere overcoat bellows (6), bellows (6) weld together, and the upper end of bellows (6) and valve gap (3) weld together.
2, a kind of low temperature bellows stop valve according to claim 1 is characterized in that: described valve stem cylinder (5) inwall lower thread build-in has valve stem cylinder copper sheathing (10).
3, a kind of low temperature bellows stop valve according to claim 1, it is characterized in that: described valve rod valve head bindiny mechanism constitutes: valve rod (4) is divided into two sections of steel upper valve rod (4a) and copper lower valve rods (4b), lower valve rod (4b) is fixedlyed connected with valve head (2), be inserted in the circular trough (12) on lower valve rod (4b) top upper valve rod (4a) lower end, have several apertures that embeds steel ball (7) (8) on this circular trough (12) wall, have a circle on the lower end side of upper valve rod (4) and be used for the curve bath (9) that steel ball (7) rolls.
4, a kind of low temperature bellows stop valve according to claim 1, it is characterized in that: described valve rod valve head bindiny mechanism constitutes: be inserted in the circular trough of valve head (2) valve rod (4) lower end, have several apertures that embeds steel ball (7 ') (8 ') on this circle cell wall, have a circle on the lower end side of valve rod (4) and be used for the curve bath (9) that steel ball (7 ') rolls.
5. root a kind of low temperature bellows stop valve according to claim 4, it is characterized in that: the screw thread build-in has valve head copper sheathing (11) on the circular cell wall of described valve head (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99232058 CN2384051Y (en) | 1999-07-09 | 1999-07-09 | Low-temp bellows stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99232058 CN2384051Y (en) | 1999-07-09 | 1999-07-09 | Low-temp bellows stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2384051Y true CN2384051Y (en) | 2000-06-21 |
Family
ID=34020811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99232058 Expired - Fee Related CN2384051Y (en) | 1999-07-09 | 1999-07-09 | Low-temp bellows stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2384051Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100371638C (en) * | 2003-07-29 | 2008-02-27 | 余金权 | Corrugated pipe valve |
| CN102878304A (en) * | 2012-09-26 | 2013-01-16 | 成都欣国立低温科技有限公司 | Fluid medium stop valve |
| CN103591372A (en) * | 2013-11-20 | 2014-02-19 | 无锡智能自控工程股份有限公司 | Corrugated pipe anti-torsion novel anti-rotation structure |
| CN105546207A (en) * | 2016-03-01 | 2016-05-04 | 马鞍山市润启新材料科技有限公司 | Valve rod for ship |
| CN105605295A (en) * | 2016-03-01 | 2016-05-25 | 马鞍山市润启新材料科技有限公司 | Corrugated pipe valve rod |
| CN106641428A (en) * | 2017-02-08 | 2017-05-10 | 江苏神通阀门股份有限公司 | Constant-temperature stuffing box structure |
| CN107939981A (en) * | 2017-12-21 | 2018-04-20 | 海杰亚（北京）医疗器械有限公司 | The low temperature electric control valve and adjusting method of preload adjustable |
-
1999
- 1999-07-09 CN CN 99232058 patent/CN2384051Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100371638C (en) * | 2003-07-29 | 2008-02-27 | 余金权 | Corrugated pipe valve |
| CN102878304A (en) * | 2012-09-26 | 2013-01-16 | 成都欣国立低温科技有限公司 | Fluid medium stop valve |
| CN103591372A (en) * | 2013-11-20 | 2014-02-19 | 无锡智能自控工程股份有限公司 | Corrugated pipe anti-torsion novel anti-rotation structure |
| CN105546207A (en) * | 2016-03-01 | 2016-05-04 | 马鞍山市润启新材料科技有限公司 | Valve rod for ship |
| CN105605295A (en) * | 2016-03-01 | 2016-05-25 | 马鞍山市润启新材料科技有限公司 | Corrugated pipe valve rod |
| CN106641428A (en) * | 2017-02-08 | 2017-05-10 | 江苏神通阀门股份有限公司 | Constant-temperature stuffing box structure |
| CN107939981A (en) * | 2017-12-21 | 2018-04-20 | 海杰亚（北京）医疗器械有限公司 | The low temperature electric control valve and adjusting method of preload adjustable |
| CN107939981B (en) * | 2017-12-21 | 2023-12-22 | 海杰亚（北京）医疗器械有限公司 | Low-temperature electric regulating valve with adjustable pretightening force and regulating method |
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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 |