CN207554896U - A kind of ultra micro pressure lets out nitrogen regulating valve - Google Patents
A kind of ultra micro pressure lets out nitrogen regulating valve Download PDFInfo
- Publication number
- CN207554896U CN207554896U CN201721306173.1U CN201721306173U CN207554896U CN 207554896 U CN207554896 U CN 207554896U CN 201721306173 U CN201721306173 U CN 201721306173U CN 207554896 U CN207554896 U CN 207554896U
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- valve
- cover
- rod
- guide sleeve
- ultra micro
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Abstract
The utility model is related to a kind of ultra micro pressures to let out nitrogen regulating valve, including valve body, core assembly, valve rod, Small diaphragm-piece, valve deck, guide collar, valve seat, upper guide sleeve, lower guide sleeve, bottom cover and executing agency, it is characterised in that：The valve body is triple-valve body, and upper and lower two valve chambers are equipped in valve body, in lower valve chamber upside-down mounting have valve seat, the core assembly that the connection of valve rod lower end is adapted to valve seat；The soft sealing valve core of the core assembly is made using fluorubber material, is wrapped between valve core case and compacting ring；The valve rod uses upper and lower dual-guiding structure, and the adjusting rod is screwed onto in the cover, and the upper end couples across the cover with adjusting handle, and adjusting rod lower end is contradicted on the plane ball bearing of adjustment disk upper end is installed on.The advantages that it is convenient to be set with pressure, and adjustable pressure is low, and work smoothness are good lets out nitrogen adjusting control especially suitable for what reservoir container 0.5kPa and following ultra micro calmed the anger seal pressure systems stabilisation.
Description
Technical field
The utility model belongs to valve technology field, and in particular to a kind of ultra micro pressure lets out nitrogen regulating valve.
Background technology
Self-operated type lets out the sealing gland pressure stabilizing system that nitrogen regulating valve is mainly used for the reservoir containers such as petroleum product, chemicals,
By inert gas pressure stabilization in control container in setting range, to avoid being in direct contact for container contents and air,
It prevents material from volatilizing or being aoxidized, and ensures that vessel safety is run.
But domestic existing self-operated type lets out the design of nitrogen regulating valve structure there are unreasonable part, leading when such as spool moves
Poor to precision, the frictional resistance suffered by valve rod is larger, and needs to open the cover during adjustment setting pressure, uses special tool
Tool such as can just be adjusted at the faults of construction, it is impossible to be well adapted for setting pressure 0.5kPa and following ultra micro pressure lets out nitrogen adjusting.
Invention content
The purpose of this utility model be for shortcoming of the existing technology, provide it is a kind of reasonable in design, suitable for micro-
A kind of ultra micro pressure that pressure is adjusted, control accuracy is high lets out nitrogen regulating valve.
To achieve the above object, a kind of ultra micro pressure provided by the utility model lets out nitrogen regulating valve, including valve body 2, spool group
Part 3, valve rod 4, Small diaphragm-piece 5, valve deck 6, guide collar 21, valve seat 22, upper guide sleeve 20, lower guide sleeve 23, bottom cover 1 are with performing machine
Structure, the executing agency include lower membrane cover 7, control diaphragm 8, upper membrane cover 9, spring base 10, adjustment spring 11, adjustment disk 12, put down
Face ball bearing 13, adjusting rod 14, the cover 15, adjusting handle 16, pallet 17, gag lever post 18 and balancing spring 19, the execution machine
Structure is socketed in the upper end of valve rod, and is fixed on valve deck, it is characterised in that the valve body is triple-valve body, is equipped with up and down in valve body
Two valve chambers, in lower valve chamber upside-down mounting have valve seat, the core assembly that the connection of valve rod lower end is adapted to valve seat；The core assembly is by valve
Core print seat, soft sealing valve core, compacting ring and clamp nut are composed, and soft sealing valve core is made using fluorubber material,
It is wrapped between valve core case and compacting ring, only exposes fluorubber sealing surface；The valve deck is fixed on stud nut on valve body
End, valve deck middle part are equipped with guide sleeve on valve rod, adjustment spring are equipped between the upper guide sleeve and executing agency's pallet；The valve
Body lower end is sealed with bottom cover, and bottom cover is equipped with the lower guide sleeve playing the guiding role when being moved up and down for valve rod.
Preferably, the adjusting rod 14 is screwed onto in the cover 15, the upper end couples across the cover with adjusting handle 16, adjusts
Pole lower end is contradicted on the plane ball bearing of adjustment disk upper end is installed on.When both can effectively avoid rotation adjusting lever 14, drive
Adjustment disk 12 rotates and adjustment spring 11 is caused to twist together, therefore the problem of influence adjusting control precision；It adjusts simultaneously
Section handwheel 16 is set to the outside of the cover, setting pressure adjustment can be carried out to executing agency without dismantling the cover so that pressure
Setting is more convenient.
Preferably, the valve rod uses upper and lower dual-guiding structure, the job stability of valve rod can be enhanced.It is described upper and lower
Guide sleeve is made of PTFE material, suffered when can reduce valve rod movement to rub because PTFE material has good self-lubricity
The degree of drag effects is wiped, so as to effectively improve the control accuracy of valve.
Preferably, the contact site when inner ring of the guide collar is moved with Small diaphragm-piece is formed with the arc chord angle of R5~10,
It is directed to circle sharp position when moving up and down repeatedly to avoid Small diaphragm-piece to cut, so as to improve its service life.
Preferably, setting limitation control diaphragm moves up and down the gag lever post 18 of position in the upper and lower membrane cover, play
The motion amplitude range of limitation control diaphragm, can effectively improve its service life.
Advantageous effect is caused by the utility model：Reasonable in design, pressure setting is convenient, and adjustable pressure is low, work
It is good to make stationarity, and in the operating condition can interference-free to setting pressure be adjusted setting the advantages that.
Description of the drawings
Fig. 1 is the structure diagram of the utility model.
In figure：1-bottom cover, 2-valve body, 3-core assembly, 4-valve rod, 5-Small diaphragm-piece, 6-valve deck, 7-lower membrane cover,
The upper membrane cover of 8-controls diaphragm, 9-, 10-spring base, 11-adjustment spring, 12-adjustment disk, 13-plane ball bearing, 14-
Adjusting rod, 15-the cover, 16-adjusting handle, 17-pallet, 18-gag lever post, 19-balancing spring, 20-upper guide sleeve,
21-guide collar, 22-valve seat, 23-lower guide sleeve, 31-valve core case, 32-soft sealing valve core, 33-compacting ring.
Specific embodiment
The embodiment of the utility model is described further below in conjunction with the accompanying drawings.
A kind of ultra micro pressure lets out nitrogen regulating valve, including valve body 2, core assembly 3, valve rod 4, Small diaphragm-piece 5, valve deck 6, guide collar
21st, valve seat 22, upper guide sleeve 20, lower guide sleeve 23, bottom cover 1 and executing agency, the executing agency include lower membrane cover 7, control
Diaphragm 8, spring base 10, adjustment spring 11, adjustment disk 12, plane ball bearing 13, adjusting rod 14, the cover 15, is adjusted upper membrane cover 9
Handwheel 16, pallet 17, gag lever post 18 and balancing spring 19, the executing agency is socketed in the upper end of valve rod, and is fixed on valve deck
On, it is characterised in that the valve body 2 is triple-valve body, and upper and lower two valve chambers are equipped in valve body, in lower valve chamber upside-down mounting have valve seat 22,
The core assembly 3 that the connection of valve rod lower end is adapted to valve seat；The core assembly 3 is by valve core case 31, soft sealing valve core 32, compacting ring
33 are composed with clamp nut, and soft sealing valve core 32 is made using fluorubber material, be wrapped in valve core case 31 with
Between compacting ring 33, only expose fluorubber sealing surface, since PTFE material of the fluorubber material compared to generally use is with relatively low
Hardness, when being contacted with sealing surface of seat can have higher seal pressure, for control slight pressure can reach more preferably
Tight seal performance.The valve deck is fixed on valve body upper end with stud nut, and guide sleeve on valve rod, upper guiding are equipped in the middle part of valve deck
Adjustment spring is equipped between set and executing agency's pallet；The valve body lower end is sealed with bottom cover, and bottom cover is equipped with for above and below valve rod
The lower guide sleeve playing the guiding role when mobile.
The adjusting rod 14 is screwed onto in the cover 15, and the upper end couples across the cover with adjusting handle 16, adjusting rod lower end
It contradicts on the plane ball bearing of adjustment disk upper end is installed on.When both can effectively avoid rotation adjusting lever 14, adjustment disk 12 is driven
The problem of rotating together and adjustment spring 11 caused to twist, therefore influencing adjusting control precision；Adjusting handle 16 simultaneously
The outside of the cover is set to, setting pressure adjustment can be carried out to executing agency without dismantling the cover so that pressure is set more
It is convenient.
The valve rod uses upper and lower dual-guiding structure, can enhance the job stability of valve rod.The upper and lower guide sleeve simultaneously
Made of PTFE material, because PTFE material has good self-lubricity, suffered frictional resistance when can reduce valve rod movement
Effect, so as to effectively improve the control accuracy of valve.
The contact site when inner ring of the guide collar 21 is moved with Small diaphragm-piece 5 is formed with the arc chord angle of R5~10, to avoid
It is directed to circle sharp position when Small diaphragm-piece moves up and down repeatedly to cut, so as to improve its service life.
Setting limitation control diaphragm moves up and down the gag lever post 18 of position in the upper and lower membrane cover, plays limitation control
The motion amplitude range of diaphragm, can effectively improve its service life.
Claims (5)
1. a kind of ultra micro pressure lets out nitrogen regulating valve, including valve body, core assembly, valve rod, Small diaphragm-piece, valve deck, guide collar, valve seat, on
Guide sleeve, lower guide sleeve, bottom cover and executing agency, the executing agency include lower membrane cover, control diaphragm, upper membrane cover, spring base,
Adjustment spring, adjustment disk, plane ball bearing, adjusting rod, the cover, adjusting handle, pallet, gag lever post and balancing spring, it is described to hold
Row mechanism is socketed in valve rod upper end, and is fixed on valve deck, it is characterised in that the valve body is triple-valve body, is equipped in valve body upper
Lower two valve chambers, in lower valve chamber upside-down mounting have valve seat, the core assembly that the connection of valve rod lower end is adapted to valve seat；The core assembly by
Valve core case, soft sealing valve core, compacting ring and clamp nut are composed, soft sealing valve core be using fluorubber material make and
Into being wrapped between valve core case and compacting ring；The valve deck is fixed on valve body upper end with stud nut, and valve is equipped in the middle part of valve deck
Guide sleeve on bar is equipped with adjustment spring between upper guide sleeve and executing agency's pallet；The valve body lower end is sealed with bottom cover, bottom cover
It is equipped with the lower guide sleeve playing the guiding role when being moved up and down for valve rod.
2. a kind of ultra micro pressure according to claim 1 lets out nitrogen regulating valve, it is characterised in that：The adjusting rod is screwed onto the cover
On, the upper end couples across the cover with adjusting handle, and adjusting rod lower end is contradicted in the plane ball bearing for being installed on adjustment disk upper end
On.
3. a kind of ultra micro pressure according to claim 1 lets out nitrogen regulating valve, it is characterised in that：The valve rod is led using double up and down
To structure, the upper and lower guide sleeve is made of PTFE material.
4. a kind of ultra micro pressure according to claim 1 lets out nitrogen regulating valve, it is characterised in that：The inner ring of the guide collar with it is small
Contact site during motion of membrane is formed with the arc chord angle of R5~10.
5. a kind of ultra micro pressure according to claim 1 lets out nitrogen regulating valve, it is characterised in that：It is set in the upper and lower membrane cover
Put the gag lever post that limitation control diaphragm moves up and down position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721306173.1U CN207554896U (en) | 2017-10-11 | 2017-10-11 | A kind of ultra micro pressure lets out nitrogen regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721306173.1U CN207554896U (en) | 2017-10-11 | 2017-10-11 | A kind of ultra micro pressure lets out nitrogen regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207554896U true CN207554896U (en) | 2018-06-29 |
Family
ID=62675535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721306173.1U Expired - Fee Related CN207554896U (en) | 2017-10-11 | 2017-10-11 | A kind of ultra micro pressure lets out nitrogen regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207554896U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109058540A (en) * | 2018-10-16 | 2018-12-21 | 四川勃朗蜀威科技有限公司 | Corrosion-resistant direct-operated regulator equipment |
| CN109114227A (en) * | 2018-10-16 | 2019-01-01 | 四川勃朗蜀威科技有限公司 | High stability direct-operated regulator door machine structure |
| CN109506022A (en) * | 2018-12-28 | 2019-03-22 | 重庆新华林自控仪表有限公司 | A kind of nitrogen envelope direct-operated regulator adjusted suitable for ultra low pressure |
| CN109654238A (en) * | 2019-01-02 | 2019-04-19 | 盐城宝德冶金设备有限公司 | Coal gas supports valve |
-
2017
- 2017-10-11 CN CN201721306173.1U patent/CN207554896U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109058540A (en) * | 2018-10-16 | 2018-12-21 | 四川勃朗蜀威科技有限公司 | Corrosion-resistant direct-operated regulator equipment |
| CN109114227A (en) * | 2018-10-16 | 2019-01-01 | 四川勃朗蜀威科技有限公司 | High stability direct-operated regulator door machine structure |
| CN109506022A (en) * | 2018-12-28 | 2019-03-22 | 重庆新华林自控仪表有限公司 | A kind of nitrogen envelope direct-operated regulator adjusted suitable for ultra low pressure |
| CN109654238A (en) * | 2019-01-02 | 2019-04-19 | 盐城宝德冶金设备有限公司 | Coal gas supports valve |
| CN109654238B (en) * | 2019-01-02 | 2024-02-13 | 盐城宝德冶金设备有限公司 | Gas supporting valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180629 Termination date: 20191011 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |