CN201145041Y - Pneumatic program control valve - Google Patents
Pneumatic program control valve Download PDFInfo
- Publication number
- CN201145041Y CN201145041Y CNU2007200757252U CN200720075725U CN201145041Y CN 201145041 Y CN201145041 Y CN 201145041Y CN U2007200757252 U CNU2007200757252 U CN U2007200757252U CN 200720075725 U CN200720075725 U CN 200720075725U CN 201145041 Y CN201145041 Y CN 201145041Y
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- Prior art keywords
- valve
- cylinder
- pneumatic
- switch
- sequencing
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Abstract
The utility model relates to a pneumatic sequencing valve, in particular to a sequencing valve which adopts a cylinder to open or close a valve, comprising a cylinder, a valve body, a valve core, a valve cover and a support frame, wherein the support frame is connected with the cylinder and the valve cover which is fixed on the valve body by a bolt, one end of the valve stem is connected to the valve core, while the other end is connected to a cylinder piston, a hollow V-shaped packing seal is adopted between the valve stem and the valve cover, a sealed end of the valve core is fixed with a PEEK sealing strip, the middle part of the valve stem is fixed close to a switch locating block and is arranged on the support frame close to the switch. The utility model has the advantages of good leak tightness, bidirectional pressure resistance, zero leakage, non-abrasion, non-impact, long service life and molecular sieve dust resistance; the valve has the advantages of fast switching speed and long service life; the valve is suitable for medium such as oil, natural gas, hydrogen, carbon monoxide, carbon dioxide, oxygen, water, steam and so on.
Description
Technical field
The utility model relates to a kind of pneumatic sequencing valve, particularly relates to a kind of sequencing valve that adopts the cylinder opening/shutting valve.
Background technique
The pneumatic valve of prior art mainly is unidirectional air feed, and resetting has spring that power is provided, and such mode often or spring lost efficacy easily, or higher air pressure must be provided.Common pneumatic piston rod of existing pneumatic valve and valve rod are to make by link to be connected firmly, this has the coaxality problem of piston rod and valve rod again, aggravate the wearing and tearing between valve rod and the valve gap, finally cause the linearity deviation of valve core movement track, spool and valve body are cooperated serious departing from occur.Valve as commercial Application, operator wish to know the keying situation of valve and the opening degree of valve all the time, modern industry increasingly automated also often flow as process parameter, and valve is contained on the pipeline, do not mentionlet alone and to observe with eyes, even if visual, also can't satisfy the accurate control of process parameter; And industrial applications also needs valve can make reaction fast.Valve as the term suggests be to want to realize extraordinary sealing at closed state, particularly needs the occasion of gas and liquid zero leakage, anti-molecular sieve dust as stop valve, simultaneously will be arranged higher working life, and general stop valve does not all reach this requirement.
Summary of the invention
The purpose of this utility model provides a kind of pneumatic sequencing valve, and a kind of sequencing valve that adopts the cylinder opening/shutting valve particularly is provided.
The utility model solved the sealing of prior art valve poor, can't programme controlled problem, remedied the deficiency that can not react rapidly of prior art.
As optimized technical scheme:
Pneumatic sequencing valve, comprise cylinder, valve body, spool, valve gap and support, support connects cylinder and valve gap, in valve body, valve rod one end and spool connect valve gap with bolt, and the other end and cylinder piston connect, valve rod and valve cover chamber adopt the sealing of hollow " V " type filler group, the seal spool end is the PEEK diaphragm seal fixedly, and the valve rod intermediate portion is fixing near the switch positioning block, and is rack-mount near switch.
Described hollow " V " type filler group has the spring compensation mechanism.
Described " V " type filler adopts charcoal fiber reinforcement filled polytetrafluoroethylene material.
Described body cavity adopts streamlined.
Described pneumatic sequencing valve Applicable media comprises oil product, rock gas, hydrogen, carbon monoxide, carbon dioxide, oxygen, reformation gas, catalytic cracked dry gas, conversion gas, water and steam.
It is forward or backwards that the medium of described pneumatic sequencing valve allows to flow to.
Described pneumatic sequencing valve Applicable temperature :-20～100 ℃;-20～200 ℃.
Described pneumatic sequencing valve valve switch does not have leakage number of times 〉=1,000,000 time.
Pneumatic sequencing valve valve rod of the present utility model and piston rod unite two into one, and guarantee up and down to neutrality; Have the stroke of regulating valve function, make the valve on-bne repair easy, improve overhaul efficiency; Adopt world advanced person's low flow resistance valve body, streamline channel design, accurate careful casting surface, the special guide plate of function reduces flow resistance greatly; Adopt the inner equilibrium structure, offset pressure medium, the use pressure reduction of valve is improved, have good bidirectional bearing ability; During the forward and reverse use of valve, have identical sealing pair specific pressure, the diaphragm seal life-span is improved, and reduced actuator, the valve overall volume is dwindled.
The utlity model has the on-the-spot indication of intuitive and reliable valve position state, join the valve position detection telltale, can realize signal remote transmission function; Adopt hollow V-type filler, have good selfsealings performance, filler adopts charcoal fiber reinforcement filled polytetrafluoroethylene material, is added with the antifriction composition, improves wear resistance, and the filler group has the spring collocation structure, can compensate automatically or change after the inside and outside filler wearing and tearing; Use the PEEK diaphragm seal, it is a kind of macromolecular material, has higher hardness and mechanical strength, and good rebound elasticity is used this diaphragm seal, and life of valve is improved greatly; In the gas medium in process pipe, may have a certain amount of impurity, under the promotion of high velocity air, these impurity can the anxious poly-diaphragm seal that washes away.Behind the certain hour; some holes, hole appear in the valve seal sector-meeting of general structure; cause valves leakage; this valve design has diaphragm seal protection against erosion device; can make air scour more than 95% on the protection against erosion device; and making gas flow that certain leading role be arranged, the protection diaphragm seal can guarantee effectively that with this protection against erosion device and diaphragm seal the life-span of diaphragm seal reaches switch more than 1,000,000 times.
The beneficial effects of the utility model are:
Good airproof performance, two-way withstand voltage zero leakage; Nothing wearing and tearing, nothing are impacted, the life-span is long; Anti-molecular sieve dust.
Valve switch speed fast (in the 2S);
Life-span is long, can stand long-term frequent switch;
Possess two-way resistance to pressure and anti-high velocity air performance of flushing;
Can be used for rugged environment such as inflammable and explosive, poisonous and dust such as hydrogen, carbon monoxide;
Have on-the-spot indication of valve position state and switching signal feedback.
The utility model Applicable media: oil product, rock gas, hydrogen, carbon monoxide, carbon dioxide, oxygen, reformation gas, catalytic cracked dry gas, conversion gas, water, steam etc.
Description of drawings
Fig. 1 is the utility model structural representation;
Wherein 1 is that valve body 2 is valve gap for PEEK diaphragm seal 3 for hollow " V " type filler group 4
5 is to be cylinder for support 7 for cylinder piston 8 near switch positioning block 6
9 is to be spool for spring compensation mechanism 11 for valve rod 12 near switch 10
Embodiment
Below in conjunction with embodiment, further set forth the present invention.
As shown in Figure 1, pneumatic sequencing valve of the present utility model, comprise cylinder 8, valve body 1, spool 12, valve gap 4 and support 6, support 6 connects cylinder 8 and valve gap 4, valve gap 4 usefulness bolt are in valve body 1, valve rod 11 1 ends and spool 12 connect, the other end and cylinder piston 7 connect, 4 of valve rod 11 and valve gaps adopt 3 sealings of hollow charcoal fiber reinforcement filled polytetrafluoroethylene material " V " type filler group, spool 12 sealed ends are PEEK diaphragm seal 2 fixedly, and valve rod 11 intermediate portions are fixing near switch positioning block 5, are installed on the support 6 near switch 9, hollow " V " type filler group 3 has spring compensation mechanism 10, and valve body 1 inner chamber adopts streamlined.
Above-mentioned pneumatic sequencing valve Applicable media comprises oil product, rock gas, hydrogen, carbon monoxide, carbon dioxide, oxygen, reformation gas, catalytic cracked dry gas, conversion gas, water and steam.
It is forward or backwards that the medium of above-mentioned pneumatic sequencing valve allows to flow to.
Above-mentioned pneumatic sequencing valve Applicable temperature :-20～100 ℃;-20～200 ℃.
Above-mentioned pneumatic sequencing valve valve switch does not have leakage number of times 〉=1,000,000 time.
The experiment proved that the utility model good airproof performance, two-way withstand voltage zero leakage; Nothing wearing and tearing, nothing are impacted, the life-span is long; Anti-molecular sieve dust; Valve switch speed fast (in the 2S); Life-span is long, can stand long-term frequent switch; Possess two-way resistance to pressure and anti-high velocity air performance of flushing; Can be used for rugged environment such as inflammable and explosive, poisonous and dust such as hydrogen, carbon monoxide; Have on-the-spot indication of valve position state and switching signal feedback.
Claims (3)
1. pneumatic sequencing valve, comprise cylinder, valve body, spool, valve gap and support, support connects cylinder and valve gap, valve gap, is characterized in that in valve body with bolt: valve rod one end and spool connect, and the other end and cylinder piston connect, valve rod and valve cover chamber adopt the sealing of hollow " V " type filler group, the seal spool end is the PEEK diaphragm seal fixedly, and the valve rod intermediate portion is fixing near the switch positioning block, and is rack-mount near switch.
2. pneumatic sequencing valve as claimed in claim 1 is characterized in that described hollow " V " type filler group has the spring compensation mechanism.
3. pneumatic sequencing valve as claimed in claim 1, it is streamlined to it is characterized in that described body cavity adopts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200757252U CN201145041Y (en) | 2007-11-19 | 2007-11-19 | Pneumatic program control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200757252U CN201145041Y (en) | 2007-11-19 | 2007-11-19 | Pneumatic program control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201145041Y true CN201145041Y (en) | 2008-11-05 |
Family
ID=40081918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200757252U Expired - Fee Related CN201145041Y (en) | 2007-11-19 | 2007-11-19 | Pneumatic program control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201145041Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075523A (en) * | 2013-02-02 | 2013-05-01 | 上海江浪流体机械制造有限公司 | Hydraulic program control valve |
| CN103615553A (en) * | 2013-11-25 | 2014-03-05 | 江苏远望仪器有限公司 | Anti-collision valve for fore peak |
-
2007
- 2007-11-19 CN CNU2007200757252U patent/CN201145041Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075523A (en) * | 2013-02-02 | 2013-05-01 | 上海江浪流体机械制造有限公司 | Hydraulic program control valve |
| CN103615553A (en) * | 2013-11-25 | 2014-03-05 | 江苏远望仪器有限公司 | Anti-collision valve for fore peak |
| CN103615553B (en) * | 2013-11-25 | 2016-02-10 | 江苏远望仪器有限公司 | Anti-collision valve for fore peak |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081105 Termination date: 20151119 |
|
| EXPY | Termination of patent right or utility model |