CN103542120B - Bi-bellow valve - Google Patents
Bi-bellow valve Download PDFInfo
- Publication number
- CN103542120B CN103542120B CN201310485496.1A CN201310485496A CN103542120B CN 103542120 B CN103542120 B CN 103542120B CN 201310485496 A CN201310485496 A CN 201310485496A CN 103542120 B CN103542120 B CN 103542120B
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- Prior art keywords
- valve
- bellows
- corrugated
- outside
- fixed
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/0227—Packings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K41/00—Spindle sealings
- F16K41/10—Spindle sealings with diaphragm, e.g. shaped as bellows or tube
Abstract
The present invention relates to a kind of bi-bellow valve, comprise valve body, valve seat, valve gap, flashboard and valve rod, valve body and valve gap are fixed, valve body and valve gap are provided with cavity and are interconnected, valve seat is in valve body, valve rod is through valve gap, the flashboard that valve rod lower end connects is positioned at valve seat and matches with valve seat, it is characterized in that: also comprise lower corrugated header, inner corrugated pipe assembly and outward corrugated tube assembly, described inner corrugated pipe assembly is enclosed within outside valve rod, and described outward corrugated tube assembly is enclosed within outside inner corrugated pipe assembly; Described inner corrugated pipe assembly comprises inner split ring, inner corrugated pipe, interior upper corrugated header, and inner corrugated pipe is divided into interior upper bellows and interior lower bellows; Described outward corrugated tube assembly comprises outer spacer ring, outward corrugated tube, outside upper corrugated header, and outward corrugated tube is divided into outside upper bellows and outside lower bellows.Structure of the present invention is simple, reasonable in design, good sealing effect, the good and on-deformable bi-bellow valve of bellows telescopic effect.
Description
Technical field
The present invention relates to a kind of valve, particularly a kind of bi-bellow valve, it is mainly applicable to valve stem seal and high vacuum requires occasion.
Background technique
Bellows valve under prior art mostly is single Bellows valve, and bellows telescopic effect is limited, easily causes telescopic effect to lose efficacy because bellows exceeds safety coefficient scope, causes valve to damage, cause potential safety hazard.
China Patent Publication No. is 101893130A, disclose the patent of invention that a kind of name is called " a kind of sylphon seal assembly and the Bellows valve with this sylphon seal assembly ", it comprises sylphon seal assembly, this sylphon seal assembly comprises inner corrugated pipe, outward corrugated tube, the upper corrugated header of hollow, a lower corrugated header of hollow and No. two lower corrugated headers of hollow, main purpose shortens the length of valve rod, shorten the length of valve switch stroke, the longer problem causing torsional deformation after compression of bellows can not be prevented, do not consider yet two bellowss one be stretched while another compressed do not arrange spacing, thus infinitely compressed or stretch and cause bellows to exceed safety coefficient scope, cause the flexible inefficacy of bellows, therefore there is above defect in it.
China Patent Publication No. is 201820869U, disclose the utility model patent that a kind of name is called " valve Double-bellows sealing structure ", it comprises the valve rod through cover plate, valve rod front end sleeve has an inner corrugated pipe, inner corrugated pipe arranged outside has an outward corrugated tube, inner corrugated pipe front end connects valve rod front top, and inner corrugated pipe bottom connects the front end of outward corrugated tube by an intermediate connecting sleeve, and the bottom of outward corrugated tube connects cover plate.Main purpose reduces the space shared by valve rod, can not arrange spacer ring, can not meet the support strength of bellows in the middle of bellows, easily cause bellows to produce torsional deformation when compressing, therefore it exists above shortcoming.
Summary of the invention
The object of the invention is to overcome present technology above shortcomings, and provide a kind of reasonable in design, good sealing effect, the good and on-deformable bi-bellow valve of bellows telescopic effect.
The present invention's adopted technological scheme that solves the problem is: this bi-bellow valve, comprise valve body, valve seat, valve gap, flashboard and valve rod, valve body and valve gap are fixed, valve body and valve gap are provided with cavity and are interconnected, valve seat is fixed in valve body, and valve rod is through valve gap, and the flashboard that valve rod lower end connects is positioned at valve seat and matches with valve seat, valve seat and flashboard form sealing when valve closing, are separated from each other again when valve open.
The present invention also comprises lower corrugated header, inner corrugated pipe assembly and outward corrugated tube assembly, and described inner corrugated pipe assembly is enclosed within outside valve rod, and described outward corrugated tube assembly is enclosed within outside inner corrugated pipe assembly; Inside and outside two bellows components are parallel-connection structure, have shortened the length of valve rod, thus have shortened the stroke of valve switch, reduce valve rod and taken up space, cost-saving.
The length being shorter in length than outward corrugated tube assembly of inner corrugated pipe assembly.
Described inner corrugated pipe assembly comprises inner split ring, inner corrugated pipe, interior upper corrugated header, inner corrugated pipe is divided into interior upper bellows and interior lower bellows, described interior upper corrugated header is fixed on valve rod, end face and the interior upper corrugated header of interior upper bellows fix, bottom surface and the inner split ring one side of interior upper bellows are fixing, the described interior end face of lower bellows and the another side of inner split ring are fixed, and the bottom surface of interior lower bellows is fixed on described lower corrugated header; Be welded with inner split ring between bellows and interior lower bellows on interior, effectively improve the support strength of inner corrugated pipe, inner corrugated pipe is not easy to produce torsional deformation when flexible, causes valve to damage.
Described outward corrugated tube assembly comprises outer spacer ring, outward corrugated tube, outside upper corrugated header, outward corrugated tube is divided into outside upper bellows and outside lower bellows, described outside upper corrugated header is fixed on valve gap, its position is positioned at the top of valve gap cavity, end face and the outside upper corrugated header of outside upper bellows fix, the bottom surface of outside upper bellows and the one side of outer spacer ring are fixed, and the end face of described outside lower bellows and the another side of outer spacer ring are fixed, and the bottom surface of outside lower bellows is fixed on described lower corrugated header; The top of valve gap inner chamber body is provided with middle nose end, and outside upper corrugated header outer surface of upper to be filled in middle nose end and is welded and fixed with it.Outer spacer ring is welded with between outside upper bellows and outside lower bellows, the same with inner corrugated pipe, effectively improve the support strength of outward corrugated tube, not yielding when flexible, improve valve working life.
The present invention also comprises support, filler, filler pressing sleeve, Stem Mut and handwheel, and described support is cavity body structure, is enclosed within outside valve rod, and fixes with valve gap; Described outside upper corrugated header has endoporus, is provided with filler in endoporus, and filler and valve rod fit tightly, and described filler pressing sleeve is filled in endoporus and compressed filler, and filler pressing sleeve and valve gap are fixed; Described Stem Mut is arranged on support, and Stem Mut is threaded with the upper end portion of valve rod, and described handwheel is connected with Stem Mut.Described Stem Mut is contained on support by Spielpassung, and described handwheel is contained on Stem Mut by drive fit, and valve rod upper-end part of driving to coordinate with Stem Mut by screw thread that formed can the structure that is elevated of straight line up and down.Be provided with filler in outside upper bellows seal and compressed by filler pressing sleeve, damaging at bellows and occur can preventing medium from leaking further when leaking, reduce potential safety hazard.
The bottom of valve rod of the present invention is also fixed with boss, and boss bottom is fixed with described flashboard, and described lower corrugated header is ring structure, and the width of described boss end face is greater than the annular diameters of lower corrugated header.In the process that valve rod upwards promotes, boss end face withstands lower corrugated header lower plane, adds limit point when bellows stretches, and prevents bellows from exceeding safety coefficient scope and flexible to lose efficacy, causes valve to damage, and shortens valve working life.
Cavity in valve gap of the present invention comprises upper cavity and lower chamber, two cavitys are interconnected, the width of lower chamber is greater than the width of upper cavity, the upper-end surface of lower chamber has counterbore, counterbore is positioned at the outer rim of upper cavity, the width of counterbore matches with described lower corrugated header outer annular diameter, and lower corrugated header can be inserted in counterbore.After boss end face withstands lower corrugated header lower plane, valve rod continues upwards to promote, and outward corrugated tube continues to be compressed, until lower bellows is inserted in counterbore, on lower corrugated header, plane withstands counterbore plane, the telescopic extensions of restriction bellows, preventing bellows from causing flexible inefficacy because exceeding safety coefficient, causing valve to damage.
Valve body of the present invention and valve gap, all to be fixed by stud bolt between valve gap and support.Valve part fixed by stud bolt, fixation, and ensure sealing, valve part not easily departs from, and extends valve working life.
The present invention compared with prior art, has the following advantages and effect: structure is simple, reasonable in design, adds spacer ring in the middle of bellows, effectively improves the support strength of bellows, and bellows is not easy when compressing to produce torsional deformation; Increasing the limit point of bellows compression and stretching, can preventing bellows from causing flexible inefficacy because exceeding safety coefficient scope; Filled and compress with filler pressing sleeve in outside upper corrugated header, can prevent from occurring that leakage can prevent medium from leaking further because bellows damages, the sealing effect of valve is good, and the telescopic effect of bellows is good and not yielding, valve is not fragile, thus extends valve working life.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
Fig. 2 is the structure for amplifying schematic diagram in A portion in Fig. 1.
Fig. 3 is the structural representation of valve gap.
Fig. 4 is the structure for amplifying schematic diagram in B portion in Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, also by embodiment, the present invention is described in further detail, and following examples are explanation of the invention and the present invention is not limited to following examples.
See Fig. 1 to Fig. 4, the present embodiment comprises valve body 1, valve seat 2, valve gap 4, flashboard 3, valve rod 5, lower corrugated header 10, inner corrugated pipe assembly 11, outward corrugated tube assembly 12, support 6, filler 9, filler pressing sleeve 91, Stem Mut 7 and handwheel 8.
Wherein, inner corrugated pipe assembly 11 comprises inner split ring 111, inner corrugated pipe, interior upper corrugated header 112, and inner corrugated pipe is divided into interior upper bellows 113 and interior lower bellows 114; Outward corrugated tube assembly 12 comprises outer spacer ring 121, outward corrugated tube, outside upper corrugated header 122, and outward corrugated tube is divided into outside upper bellows 123 and outside lower bellows 124.
Valve body 1 is fixed by stud bolt 13 with valve gap 4, valve body 1 and valve gap 4 are provided with cavity 14 and are interconnected, cavity top in valve gap 4 is provided with middle nose end 42, the cavity 14 of valve body 1 comprises lumen 15, valve seat 2 is welded in lumen 15, and valve rod 5 is through valve gap 4, and the flashboard 3 that valve rod 5 lower end connects is positioned at valve seat 2 and matches with valve seat 2, valve seat 2 and flashboard 3 form sealing when valve closing, are separated from each other again when valve open; Support 6 is also cavity body structure, be enclosed within outside valve rod 5, and fixed by stud bolt 13 with valve gap 4, Stem Mut 7 fills on the frame 6 by Spielpassung, handwheel 8 is contained on Stem Mut 7 by drive fit, and valve rod 5 upper-end part of driving to coordinate with Stem Mut 7 by screw thread that formed can the structure that is elevated of straight line up and down.
Inner corrugated pipe assembly 11 is enclosed within outside valve rod 5, and outward corrugated tube assembly 12 is enclosed within outside inner corrugated pipe assembly 11.
Interior upper corrugated header 112 is weldingly fixed on valve rod 5, end face and the interior upper corrugated header 112 of interior upper bellows 113 are welded and fixed, the interior upper bottom surface of bellows 113 and the end face of inner split ring 111 are welded and fixed, the interior lower end face of bellows 114 and the bottom surface of inner split ring 111 are welded and fixed, and the bottom surface of interior lower bellows 114 is weldingly fixed on lower corrugated header 10.
Be welded and fixed with it in the middle nose end 42 that outside upper corrugated header 122 outer surface of upper 1221 fills in valve gap 4, end face and the outside upper corrugated header 122 of outside upper bellows 123 are welded and fixed, the bottom surface of outside upper bellows 123 and the end face of outer spacer ring 121 are welded and fixed, the end face of outside lower bellows 124 and the bottom surface of outer spacer ring 121 are welded and fixed, and the bottom surface of outside lower bellows 124 is weldingly fixed on lower corrugated header 10.
Outside upper corrugated header 122 has endoporus 1222, is plugged with filler 9 in endoporus 1222, and filler 9 is enclosed within outside valve rod 5, filler 9 and valve rod 5 fit tightly, filler pressing sleeve 91 is also enclosed within outside valve rod 5, and filler pressing sleeve 91 is filled in endoporus 1222 and compressed filler 9, and filler pressing sleeve 91 is fixed with valve gap 4.
In the present embodiment, the bottom of valve rod 5 is also fixed with boss 51, is fixed with flashboard 3 bottom boss 51, and lower corrugated header 10 is ring structure, and the width L1 of boss end face 511 is greater than the annular diameters r of lower corrugated header 10.
In the present embodiment, cavity 14 in valve gap 4 comprises upper cavity 43 and lower chamber 44, two cavitys are interconnected, the width of lower chamber 44 is greater than the width of upper cavity 43, upper-end surface 441 is provided with in lower chamber 44, upper-end surface 441 has counterbore 41, counterbore 41 is positioned at the outer rim of upper cavity 43, the width L3 of counterbore 41 matches with lower corrugated header 10 outer annular diameter R, lower corrugated header 10 can be inserted in counterbore 41 in valve rod 5 lifting process, and the outer annular diameter R of lower corrugated header 10 is greater than the width L2 bottom valve gap 4 upper cavity 43.
The height L4 of flashboard 3 is less than the height L5 of boss end face 511 to counterbore 41 plane 411.
Illustrated valve is in closed condition, and bi-bellow is in free state, and namely bellows does not compress the state do not stretched.
During use, rotation hand wheel 8, valve rod 5 drives flashboard 3 up to promote, progressively open flashboard 3, at this moment, inner corrugated pipe is stretched, outward corrugated tube is compressed, but because outward corrugated tube is longer than inner corrugated pipe, the length of both compressions and elongation is different, when valve rod 5 drives flashboard 3 to continue up to rise to certain altitude, inner corrugated pipe is no longer stretched, inner corrugated pipe is stretched within the scope of safety coefficient, and continuation is compressed by outward corrugated tube, after boss end face 511 withstands the lower plane 101 of lower corrugated header 10, valve rod 5 drives flashboard 3 to continue up to promote, outward corrugated tube is still compressed, until plane 102 withstands counterbore 41 plane 411 on lower corrugated header 10, outward corrugated tube is compressed within the scope of safety coefficient.Whole process terminates, and valve is fully opened.The inside and outside bellows compression of valve closing process and elongation process are in contrast.
In addition, it should be noted that, the specific embodiment described in this specification, the shape, institute's title of being named etc. of its component can be different, and the above content described in this specification is only to structure example of the present invention explanation.The equivalence change that structure, feature and the principle of all foundations described in inventional idea of the present invention are done or simple change, be included in the protection domain of patent of the present invention.
Claims (4)
1. a bi-bellow valve, comprises valve body, valve seat, valve gap, flashboard and valve rod, and valve body and valve gap are fixed, valve body and valve gap are provided with cavity and are interconnected, and valve seat is fixed in valve body, and valve rod is through valve gap, the flashboard that valve rod lower end connects is positioned at valve seat and matches with valve seat
It is characterized in that: also comprise lower corrugated header, inner corrugated pipe assembly and outward corrugated tube assembly, support, filler, filler pressing sleeve, Stem Mut and handwheel, described inner corrugated pipe assembly is enclosed within outside valve rod, and described outward corrugated tube assembly is enclosed within outside inner corrugated pipe assembly;
Described inner corrugated pipe assembly comprises inner split ring, inner corrugated pipe, interior upper corrugated header, inner corrugated pipe is divided into interior upper bellows and interior lower bellows, described interior upper corrugated header is fixed on valve rod, end face and the interior upper corrugated header of interior upper bellows fix, bottom surface and the inner split ring one side of interior upper bellows are fixing, the described interior end face of lower bellows and the another side of inner split ring are fixed, and the bottom surface of interior lower bellows is fixed on described lower corrugated header;
Described outward corrugated tube assembly comprises outer spacer ring, outward corrugated tube, outside upper corrugated header, outward corrugated tube is divided into outside upper bellows and outside lower bellows, described outside upper corrugated header is fixed on valve gap, end face and the outside upper corrugated header of outside upper bellows fix, the bottom surface of outside upper bellows and the one side of outer spacer ring are fixed, the end face of described outside lower bellows and the another side of outer spacer ring are fixed, and the bottom surface of outside lower bellows is fixed on described lower corrugated header;
Described support is cavity body structure, is enclosed within outside valve rod, and fixes with valve gap; Described outside upper corrugated header has endoporus, is provided with filler in endoporus, and filler and valve rod fit tightly, and described filler pressing sleeve is filled in endoporus and compressed filler, and filler pressing sleeve and valve gap are fixed; Described Stem Mut is arranged on support, and Stem Mut is threaded with the upper end portion of valve rod, and described handwheel is connected with Stem Mut.
2. bi-bellow valve according to claim 1, it is characterized in that: the bottom of described valve rod is also fixed with boss, boss bottom is fixed with described flashboard, and described lower corrugated header is ring structure, and the width of described boss end face is greater than the annular diameters of lower corrugated header.
3. bi-bellow valve according to claim 1, it is characterized in that: the cavity in described valve gap comprises upper cavity and lower chamber, two cavitys are interconnected, and the width of lower chamber is greater than the width of upper cavity, the upper-end surface of lower chamber has counterbore, and counterbore is positioned at the outer rim of upper cavity.
4. bi-bellow valve according to claim 1, is characterized in that: described valve body and valve gap, all fixed by stud bolt between valve gap and support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310485496.1A CN103542120B (en) | 2013-10-17 | 2013-10-17 | Bi-bellow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310485496.1A CN103542120B (en) | 2013-10-17 | 2013-10-17 | Bi-bellow valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103542120A CN103542120A (en) | 2014-01-29 |
| CN103542120B true CN103542120B (en) | 2016-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310485496.1A Active CN103542120B (en) | 2013-10-17 | 2013-10-17 | Bi-bellow valve |
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| CN (1) | CN103542120B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104930211A (en) * | 2015-07-06 | 2015-09-23 | 昆山维萨阀门有限公司 | Full-division type single-panel gate valve with reliable limit |
| CN106855131A (en) * | 2015-12-09 | 2017-06-16 | 王翔 | A kind of Parallel gate valve Parallel slide valve |
| CN106855130A (en) * | 2015-12-09 | 2017-06-16 | 王翔 | A kind of double disk parallel gate valve |
| CN107859783A (en) * | 2017-11-15 | 2018-03-30 | 顾兴旺 | A kind of valve with cleaning Valve clack device |
| CN113551050B (en) * | 2021-08-31 | 2023-06-06 | 南通世发船舶机械有限公司 | Corrugated pipe valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4100862A1 (en) * | 1991-01-14 | 1992-07-16 | Schilling H Eisenwerk | Shut-off valve with bellows sealing - has two internal bellows, one softer than other, activated by shoulder on positioning rod |
| CN101893130A (en) * | 2010-07-05 | 2010-11-24 | 浙江万龙机械有限公司 | Corrugated pipe sealing component and corrugated pipe valve provided with same |
| CN202132533U (en) * | 2011-07-12 | 2012-02-01 | 精工阀门有限公司 | Multi-purpose bellows sluice valve |
| CN203585390U (en) * | 2013-10-17 | 2014-05-07 | 浙江万龙机械有限公司 | Double-corrugated-pipe valve |
-
2013
- 2013-10-17 CN CN201310485496.1A patent/CN103542120B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4100862A1 (en) * | 1991-01-14 | 1992-07-16 | Schilling H Eisenwerk | Shut-off valve with bellows sealing - has two internal bellows, one softer than other, activated by shoulder on positioning rod |
| CN101893130A (en) * | 2010-07-05 | 2010-11-24 | 浙江万龙机械有限公司 | Corrugated pipe sealing component and corrugated pipe valve provided with same |
| CN202132533U (en) * | 2011-07-12 | 2012-02-01 | 精工阀门有限公司 | Multi-purpose bellows sluice valve |
| CN203585390U (en) * | 2013-10-17 | 2014-05-07 | 浙江万龙机械有限公司 | Double-corrugated-pipe valve |
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| CN103542120A (en) | 2014-01-29 |
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