CN205226569U - Bellows sealing pneumatic control valve - Google Patents
Bellows sealing pneumatic control valve Download PDFInfo
- Publication number
- CN205226569U CN205226569U CN201521118043.6U CN201521118043U CN205226569U CN 205226569 U CN205226569 U CN 205226569U CN 201521118043 U CN201521118043 U CN 201521118043U CN 205226569 U CN205226569 U CN 205226569U
- Authority
- CN
- China
- Prior art keywords
- valve rod
- valve seat
- limited post
- compress spring
- surge bunker
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model belongs to the technical field of the valve, especially, relate to a bellows sealing pneumatic control valve, including the disk seat, the bottom is equipped with down the baffle in the disk seat, the top is equipped with the overhead gage in the disk seat, be equipped with the round hole between overhead gage, the lower baffle, the round hole top is equipped with the case, the case top is connected with the valve rod, be equipped with the buffering storehouse above the disk seat, a fixing bolt, the 2nd fixing bolt fixed connection are passed through with the disk seat in buffering storehouse bottom, the valve rod passes disk seat, buffering storehouse in proper order, be equipped with the bellows between valve rod and disk seat, the buffering storehouse, the top of valve rod is connected with the baffle, valve rod outside cover has buffer spring, buffer spring is located the below of baffle, the baffle top is connected with down the depression bar, be equipped with pneumatic storehouse above the buffering storehouse.
Description
Technical field
The utility model belongs to valve technology field, particularly relates to a kind of sylphon seal pneumatic control valve.
Background technique
In the automatic control of modern plant, modulating valve plays a very important role, and the production of these factories depends on that the medium flowed correctly distributes and controls.These control no matter to be that the exchange of energy, the reduction of pressure or simple container are reinforced, all need some final control unit to go.Modulating valve plays adjustable resistance in the duct.It changes the turbulence scale of process fluid or provides a Pressure Drop in laminar flow conditions, and Pressure Drop is caused by change valve resistance or " friction ".This pressure reduces process and is commonly referred to " throttling ".For gas, it is close to isothermal adiabatic state, and deviation depends on the Non Ideal Degree (joule one Thomson effect) of gas.In the case of a liquid, pressure is then consumed by turbulent flow or viscous friction, and both of these case is all converted into heat energy pressure, causes temperature slightly to raise.The modulating valve of current practical application, seals between valve rod and valve seat by rubber seal rings for seal, and this seal ring is easy to aging, changes, safeguard loaded down with trivial details after work a period of time with regard to needs.
Summary of the invention
The utility model provides and a kind of sylphon seal pneumatic control valve, to solve the easily aging problem of the rubber seal that proposes in above-mentioned background technology.
The technical problem that the utility model solves realizes by the following technical solutions:
A kind of sylphon seal pneumatic control valve, it is characterized in that: comprise valve seat, described valve seat inner bottom part is provided with lower pedal, described valve seat inner top is provided with overhead gage, described overhead gage, circular hole is provided with between lower pedal, spool is provided with above described circular hole, described spool top is connected with valve rod, surge bunker is provided with above described valve seat, the first fixing bolt is passed through with valve seat bottom described surge bunker, second fixing bolt is fixedly connected with, described valve rod is successively through valve seat, surge bunker, described valve rod and valve seat, bellows is provided with between surge bunker, the top of described valve rod is connected with baffle plate, the outer surface cover of described valve rod has damping spring, described damping spring is positioned at the below of baffle plate, described baffle plate top is connected with down-pressed pole, pneumatic storehouse is provided with above described surge bunker, described pneumatic storehouse comprises warehouse, lower warehouse, described upper warehouse top is provided with suction port, described upper warehouse, leather bag is provided with between lower warehouse, described down-pressed pole is successively through surge bunker, pneumatic storehouse and top are fixed on the bottom surface of leather bag, the first Compress Spring is provided with below described leather bag, second Compress Spring, described first Compress Spring, second Compress Spring is positioned at down-pressed pole both sides, the first limited post is provided with bottom described pneumatic storehouse, second limited post, described first limited post is positioned at the first Compress Spring, described second limited post is positioned at the second Compress Spring.
Described first limited post, the second limited post are symmetrical arranged.
The beneficial effects of the utility model are:
The technical program bellows replaces seal ring to carry out seal action, because bellows surface has fold, area of contact in relative area is increased, improve sealing, also not easily aging, bellows itself has stretchability in addition, some pressure can also be resisted, not yielding in the process that valve rod moves up and down, increase the service life, reduce maintenance times, reduce maintenance cost, damping spring in surge bunker, the active force of down-pressed pole to valve rod can be made to slow down, thus reduce spool to the impulse force of valve seat, the setting of limited post mainly plays position-limiting action to Compress Spring.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1-valve seat, 2-overhead gage, 3-lower pedal, 4-spool, 5-valve rod, 6-first fixing bolt, 7-second fixing bolt, 8-bellows, 9-surge bunker, 10-damping spring, 11-baffle plate, 12-down-pressed pole, the pneumatic storehouse of 13-, warehouse under 14-, the upper warehouse of 15-, 16-leather bag, 17-suction port, 18-first Compress Spring, 19-second Compress Spring, 20-first limited post, 21-second limited post, 22-circular hole.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further:
A kind of sylphon seal pneumatic control valve, comprise valve seat 1, valve seat 1 inner bottom part is provided with lower pedal 3, valve seat 1 inner top is provided with overhead gage 2, overhead gage 2, circular hole 22 is provided with between lower pedal 3, spool 4 is provided with above circular hole 22, spool 4 top is connected with valve rod 5, valve seat 1 is provided with surge bunker 9 above, the first fixing bolt 6 is passed through with valve seat 1 bottom surge bunker 9, second fixing bolt 7 is fixedly connected with, valve rod 5 is successively through valve seat 1, surge bunker 9, valve rod 5 and valve seat 1, bellows 8 is provided with between surge bunker 9, the top of valve rod 5 is connected with baffle plate 11, the outer surface cover of valve rod 5 has damping spring 10, damping spring 10 is positioned at the below of baffle plate 11, baffle plate 11 top is connected with down-pressed pole 12, surge bunker 9 is provided with pneumatic storehouse 13 above, pneumatic storehouse 13 comprises warehouse 15, lower warehouse 14, upper warehouse 15 top is provided with suction port 17, upper warehouse 15, leather bag 16 is provided with between lower warehouse 14, down-pressed pole 12 is successively through surge bunker 9, pneumatic storehouse 13 and top are fixed on the bottom surface of leather bag 16, the first Compress Spring 18 is provided with below leather bag 16, second Compress Spring 19, first Compress Spring 18, second Compress Spring 19 is positioned at down-pressed pole 12 both sides, the first limited post 20 is provided with bottom pneumatic storehouse 13, second limited post 21, first limited post 20 is positioned at the first Compress Spring 18, second limited post 21 is positioned at the second Compress Spring 19.
First limited post 20, second limited post 21 is symmetrical arranged.
Utilize technological scheme described in the utility model, or those skilled in the art being under the inspiration of technical solutions of the utility model, designing similar technological scheme, and reach above-mentioned technique effect, is all fall into protection domain of the present utility model.
Claims (2)
1. a sylphon seal pneumatic control valve, it is characterized in that: comprise valve seat, described valve seat inner bottom part is provided with lower pedal, described valve seat inner top is provided with overhead gage, described overhead gage, circular hole is provided with between lower pedal, spool is provided with above described circular hole, described spool top is connected with valve rod, surge bunker is provided with above described valve seat, the first fixing bolt is passed through with valve seat bottom described surge bunker, second fixing bolt is fixedly connected with, described valve rod is successively through valve seat, surge bunker, described valve rod and valve seat, bellows is provided with between surge bunker, the top of described valve rod is connected with baffle plate, the outer surface cover of described valve rod has damping spring, described damping spring is positioned at the below of baffle plate, described baffle plate top is connected with down-pressed pole, pneumatic storehouse is provided with above described surge bunker, described pneumatic storehouse comprises warehouse, lower warehouse, described upper warehouse top is provided with suction port, described upper warehouse, leather bag is provided with between lower warehouse, described down-pressed pole is successively through surge bunker, pneumatic storehouse and top are fixed on the bottom surface of leather bag, the first Compress Spring is provided with below described leather bag, second Compress Spring, described first Compress Spring, second Compress Spring is positioned at down-pressed pole both sides, the first limited post is provided with bottom described pneumatic storehouse, second limited post, described first limited post is positioned at the first Compress Spring, described second limited post is positioned at the second Compress Spring.
2. a kind of sylphon seal pneumatic control valve according to claim 1, is characterized in that: described first limited post, the second limited post are symmetrical arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521118043.6U CN205226569U (en) | 2015-12-28 | 2015-12-28 | Bellows sealing pneumatic control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521118043.6U CN205226569U (en) | 2015-12-28 | 2015-12-28 | Bellows sealing pneumatic control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205226569U true CN205226569U (en) | 2016-05-11 |
Family
ID=55901635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521118043.6U Expired - Fee Related CN205226569U (en) | 2015-12-28 | 2015-12-28 | Bellows sealing pneumatic control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205226569U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106907505A (en) * | 2017-04-10 | 2017-06-30 | 浙江大学 | The high-pressure pneumatic proportional pressure-reducing valve of sylphon seal |
-
2015
- 2015-12-28 CN CN201521118043.6U patent/CN205226569U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106907505A (en) * | 2017-04-10 | 2017-06-30 | 浙江大学 | The high-pressure pneumatic proportional pressure-reducing valve of sylphon seal |
| CN106907505B (en) * | 2017-04-10 | 2018-10-12 | 浙江大学 | The high-pressure pneumatic proportional pressure-reducing valve of sylphon seal |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160511 Termination date: 20171228 |