CN104776240A - Bellows parallel gate valve - Google Patents
Bellows parallel gate valve Download PDFInfo
- Publication number
- CN104776240A CN104776240A CN201510155118.6A CN201510155118A CN104776240A CN 104776240 A CN104776240 A CN 104776240A CN 201510155118 A CN201510155118 A CN 201510155118A CN 104776240 A CN104776240 A CN 104776240A
- Authority
- CN
- China
- Prior art keywords
- valve
- bellows
- parallel gate
- gate valve
- flashboard
- 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
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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
- F16K3/029—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 with two or more gates
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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
- F16K3/16—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 with special arrangements for separating the sealing faces or for pressing them together
- F16K3/18—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 with special arrangements for separating the sealing faces or for pressing them together by movement of the closure members
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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
- F16K3/30—Details
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
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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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
Abstract
The invention relates to a bellows parallel gate valve. Bellows wedge-shaped gate valves and bellows stop valves exist and are originally applied in present market, and have the defects of poor sealing property and short service life. The bellows parallel gate valve comprises a valve body and a valve cover, wherein a valve rod is arranged in the valve body; a bellows is arranged outside the valve rod in a sleeving mode; a valve element is arranged at the lower part of the valve rod. The bellows parallel gate valve is characterized in that a flow passage is arranged in the valve element; two flashboards parallel to each other are arranged on the flow passage; an elastic part is arranged between the two flashboards; the flashboards are fixed on a valve seat. A bellows structure is combined with a parallel gate valve, the performance requirement of zero leakage can be reached, the defects of the stop valves and the wedge-shaped gate valves are also avoided, and the bellows parallel gate valve is higher in sealing property and longer in service life.
Description
Technical field
The present invention relates to a kind of bellows parallel gate valve.
Background technique
Along with the develop rapidly of science and technology and the develop rapidly of industrial level, sealing and the reliability requirement of valve are higher, seal failure not only can cause huge economic loss, and pollute the environment, even lead to great personnel casualty accidents, therefore the research of particular service requirement lower valve sealing technique is used and be significant.With the valve of bellows as valve stem seal element, it is usually used in the strict occasion of valve stem seal requirement, as in the occasion of high vacuum and nuclear industry or inflammable, explosive, poisonous, permeability have by force on the industrial pipeline under the special medias such as nuclear radiation and bad working environments.Because stop valve structure is simple, stroke is short, and switching time is short, and during switch, the frictional force of sealing surface is little.Existing market to exist and what generally apply is all bellows wedge action valve and bellows stop valve.
As shown in Figure 1, bellows stop valve runner is S-shaped, and flow resistance is large, because valve rod is subject to the pressure of medium, easily bends, and operates moment of torsion also larger during switch.And also there is dismounting inconvenience, interchangeablity is poor, the problem that the life-span is shorter.
Be illustrated in figure 2 bellows wedge action valve, there is following problem: 1. due to flashboard and angle of valve seat inconsistent, easily cause reveal, also can cause the problem that throttle down is comparatively required great effort.
2., and after bellows wedge action valve is heated and cools, wedge shape flashboard is often stuck, due to the defect of design, valve rod is moving up and down all limited, and when media expansion and contraction time, valve rod can deform and distortion.
3., although bellows wedge action valve uses " flexibility " material manufacture wedge shape flashboard but be also difficult to accomplish real " flexibility ", so-called " flexibility " flashboard often seems very firm.
4. bellows wedge action valve is owing to there being a gradient, when wedge shape flashboard slips over valve seat, does not have the effect of " cleaning ", dirt can be embedded fitting surface on the contrary.
Summary of the invention
The present invention is directed to the problems referred to above, a kind of bellows parallel gate valve is provided, bellows structure and parallel gate valve are combined, the performance requirement of zero leakage can be reached, turn avoid the shortcoming of stop valve and wedge action valve, sealing is stronger, also has longer working life.
For this reason, the present invention takes following technological scheme, bellows parallel gate valve, comprises valve body, valve gap, arranges valve rod in valve body, the outside of valve rod is nested with bellows, the bottom of valve rod arranges spool, it is characterized in that arranging runner in described spool, runner is arranged two flashboards be parallel to each other, arrange elastic component between two flashboards, described flashboard is fixed on valve seat.
Described runner is horizontal run, and described flashboard is vertical with horizontal run.
Described valve rod is arranged on flashboard top.
Filler is filled between described bellows upper end and valve rod.
Described flashboard leans on valve seat.
Described elastic component is upper and lower two Returnning springs be arranged in parallel.
Advantage of the present invention is as follows:
1. bellows parallel gate valve is all straight-through type, and flow resistance is little, and bellows parallel gate valve flashboard and MEDIA FLOW are to vertical, and valve rod does not stress.
2. bellows parallel gate valve flashboard when cutting out is subject to pressure medium, withstands on valve seat, makes sealing effect better, leaks in not easily occurring
3. easy accessibility, component interchangeability is strong, is convenient to on-line maintenance, has longer working life.
4. throttle down is comparatively laborsaving, reduces actuating motor power.
5. the valve rod of bellows parallel gate valve all can not be restricted at upper and lower two ends, and when the temperature of medium changes, flashboard can servo-actuatedly adjust, and flashboard and valve rod can not be stuck.
6. between bellows parallel gate valve two panels flashboard with two springs, can the bringing very large " flexibility " of flashboard be given.When size is very large, pressure change also very greatly time,
7. when bellows parallel gate valve flashboard slips over valve seat time, can produce the action of " cleaning ", this contributes to removing the dirt on fitting surface.
Accompanying drawing explanation
Fig. 1 is the structural representation of bellows stop valve.
Fig. 2 is the structural representation of bellows wedge action valve.
Fig. 3 is structural representation of the present invention.
Embodiment
Below in conjunction with specific embodiment, set forth the present invention further.
As shown in Figure 3 bellows parallel gate valve, comprise valve body 3, valve gap, valve rod 2 is set in valve body 3, the outside of valve rod 2 is nested with bellows 1, and the bottom of valve rod 2 arranges spool, arranges horizontal run in spool, runner is arranged two import flashboards be parallel to each other 6 and outlet flashboard 7, two flashboards are vertical with horizontal run, and arrange two parallel Returnning springs between two flashboards, flashboard leans on valve seat 5.The lower end of valve rod 2 is arranged on flashboard, fills filler between the upper end of bellows 1 and valve rod 2 top.
The present invention has the following advantages compared to bellows stop valve:
1. bellows parallel gate valve is all straight-through type, and flow resistance is little, and bellows stop valve runner is S-shaped, and flow resistance is large.
2. bellows parallel gate valve flashboard and MEDIA FLOW are to vertical, and valve rod does not stress, and bellows stop valve is subject to the pressure of medium due to valve rod, easily bends, and operate moment of torsion also much larger than bellows gate valve during switch
3. bellows parallel gate valve flashboard when cutting out is subject to pressure medium, withstands on valve seat, makes sealing effect better, leaks in not easily occurring
4. bellows parallel gate valve easy accessibility, component interchangeability is strong, is convenient to on-line maintenance.The interchangeablity of bellows stop valve is poor.
5., because its convertibility is better, comparatively bellows stop valve is longer working life for bellows parallel gate valve.
The present invention has the following advantages compared to bellows wedge action valve:
1. bellows parallel gate valve is double-flashboard parallel gate valve, only needs to keep the parallelism of flashboard, just can ensure good sealing effect, and bellows wedge action valve, flashboard and angle of valve seat inconsistent, easily cause leakage.
2. the closedown of bellows parallel gate valve only relies on the position between flashboard and valve seat, does not need very large power to carry out throttle down.Therefore, relative to bellows wedge action valve, bellows parallel gate valve can join much smaller electric actuator.
3. the valve rod of bellows parallel gate valve all can not be restricted at upper and lower two ends, and when the temperature of medium changes, flashboard can servo-actuatedly adjust, and flashboard and valve rod can not be stuck.And after bellows wedge action valve is heated and cools, wedge shape flashboard is often stuck, due to the defect of design, valve rod is moving up and down all limited, and when media expansion and contraction time, valve rod can deform and distortion.
4. between bellows parallel gate valve two panels flashboard with two springs, can the bringing very large " flexibility " of flashboard be given.When size is very large, pressure change also very greatly time, even if bellows wedge action valve uses " flexibility " material manufacture wedge shape, flashboard is also difficult to accomplish real " flexibility ", and so-called " flexibility " flashboard often seems very firm.
5. when bellows parallel gate valve flashboard slips over valve seat time, can produce the action of " cleaning ", this contributes to removing the dirt on fitting surface.And the valve seat firmly sealed with officials Tai Li and flashboard are not easy wearing and tearing.And bellows wedge action valve is owing to there being a gradient, when wedge shape flashboard slips over valve seat, there is no the effect of " cleaning ", dirt can be embedded fitting surface on the contrary.
Bellows structure and parallel gate valve combine by the present invention, can reach the performance requirement of zero leakage, turn avoid the shortcoming of stop valve and wedge action valve, and sealing is stronger, also has longer working life.
Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.
Claims (6)
1. bellows parallel gate valve, comprise valve body, valve gap, in valve body, valve rod is set, the outside of valve rod is nested with bellows, the bottom of valve rod arranges spool, it is characterized in that arranging runner in described spool, runner is arranged two flashboards be parallel to each other, arrange elastic component between two flashboards, described flashboard is fixed on valve seat.
2. bellows parallel gate valve according to claim 1, it is characterized in that described runner is horizontal run, described flashboard is vertical with horizontal run.
3. bellows parallel gate valve according to claim 2, is characterized in that described valve rod is arranged on flashboard top.
4. bellows parallel gate valve according to claim 3, is characterized in that filling filler between described bellows upper end and valve rod.
5. bellows parallel gate valve according to claim 4, is characterized in that described flashboard leans on valve seat.
6. bellows parallel gate valve according to claim 1, is characterized in that described elastic component is upper and lower two Returnning springs be arranged in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510155118.6A CN104776240A (en) | 2015-04-03 | 2015-04-03 | Bellows parallel gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510155118.6A CN104776240A (en) | 2015-04-03 | 2015-04-03 | Bellows parallel gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104776240A true CN104776240A (en) | 2015-07-15 |
Family
ID=53617886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510155118.6A Pending CN104776240A (en) | 2015-04-03 | 2015-04-03 | Bellows parallel gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104776240A (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2339825Y (en) * | 1998-05-18 | 1999-09-22 | 曹发君 | Sealing type stop-valve for corrugated pipe |
| CN201636354U (en) * | 2010-04-26 | 2010-11-17 | 温州市石化机械阀门厂 | Corrugated pipe gate valve |
| CN201787113U (en) * | 2010-09-29 | 2011-04-06 | 华夏阀门有限公司 | Combined type damper plate of unidirectional sealed parallel type double damper plate gate valve |
| CN201810799U (en) * | 2010-09-28 | 2011-04-27 | 华夏阀门有限公司 | Bidirectional sealed parallel type combined gate plate with double gate plate gate valve |
| CN102094988A (en) * | 2010-12-09 | 2011-06-15 | 无锡市亚迪流体控制技术有限公司 | Parallel gate valve |
| CN202048227U (en) * | 2011-05-13 | 2011-11-23 | 浙江特技阀门有限公司 | Gate valve |
| CN102364178A (en) * | 2011-11-09 | 2012-02-29 | 浙江超达阀门股份有限公司 | Ball valve of corrugated pipe |
| CN102374294A (en) * | 2010-08-27 | 2012-03-14 | 重庆川仪十一厂有限公司 | Pneumatic Y-type stop valve |
| CN202176738U (en) * | 2011-12-15 | 2012-03-28 | 天津市圣恺工业技术发展有限公司 | Gate valve of ceramic slab with guide hole |
| CN102563111A (en) * | 2011-11-29 | 2012-07-11 | 南通高中压阀门有限公司 | High-pressure and energy-saving universal type parallel double-valve flap gate valve |
| CN202349222U (en) * | 2011-12-08 | 2012-07-25 | 张良 | Long-life corrugated pipe stop valve |
| CN103148231A (en) * | 2013-03-20 | 2013-06-12 | 南通市电站阀门有限公司 | High-temperature high-pressure parallel double-gate valve gate pair and assembling method thereof |
| CN203594838U (en) * | 2013-11-25 | 2014-05-14 | 江苏星河阀门有限公司 | Double-valve set of corrugated pipe instrument |
| CN204592359U (en) * | 2015-04-03 | 2015-08-26 | 哈托利海托阀门（杭州）有限公司 | Bellows parallel gate valve |
-
2015
- 2015-04-03 CN CN201510155118.6A patent/CN104776240A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2339825Y (en) * | 1998-05-18 | 1999-09-22 | 曹发君 | Sealing type stop-valve for corrugated pipe |
| CN201636354U (en) * | 2010-04-26 | 2010-11-17 | 温州市石化机械阀门厂 | Corrugated pipe gate valve |
| CN102374294A (en) * | 2010-08-27 | 2012-03-14 | 重庆川仪十一厂有限公司 | Pneumatic Y-type stop valve |
| CN201810799U (en) * | 2010-09-28 | 2011-04-27 | 华夏阀门有限公司 | Bidirectional sealed parallel type combined gate plate with double gate plate gate valve |
| CN201787113U (en) * | 2010-09-29 | 2011-04-06 | 华夏阀门有限公司 | Combined type damper plate of unidirectional sealed parallel type double damper plate gate valve |
| CN102094988A (en) * | 2010-12-09 | 2011-06-15 | 无锡市亚迪流体控制技术有限公司 | Parallel gate valve |
| CN202048227U (en) * | 2011-05-13 | 2011-11-23 | 浙江特技阀门有限公司 | Gate valve |
| CN102364178A (en) * | 2011-11-09 | 2012-02-29 | 浙江超达阀门股份有限公司 | Ball valve of corrugated pipe |
| CN102563111A (en) * | 2011-11-29 | 2012-07-11 | 南通高中压阀门有限公司 | High-pressure and energy-saving universal type parallel double-valve flap gate valve |
| CN202349222U (en) * | 2011-12-08 | 2012-07-25 | 张良 | Long-life corrugated pipe stop valve |
| CN202176738U (en) * | 2011-12-15 | 2012-03-28 | 天津市圣恺工业技术发展有限公司 | Gate valve of ceramic slab with guide hole |
| CN103148231A (en) * | 2013-03-20 | 2013-06-12 | 南通市电站阀门有限公司 | High-temperature high-pressure parallel double-gate valve gate pair and assembling method thereof |
| CN203594838U (en) * | 2013-11-25 | 2014-05-14 | 江苏星河阀门有限公司 | Double-valve set of corrugated pipe instrument |
| CN204592359U (en) * | 2015-04-03 | 2015-08-26 | 哈托利海托阀门（杭州）有限公司 | Bellows parallel gate valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150715 |