CN204878910U - Two -stage decompression adjusting valve - Google Patents
Two -stage decompression adjusting valve Download PDFInfo
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- CN204878910U CN204878910U CN201520529168.1U CN201520529168U CN204878910U CN 204878910 U CN204878910 U CN 204878910U CN 201520529168 U CN201520529168 U CN 201520529168U CN 204878910 U CN204878910 U CN 204878910U
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- decompression
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Abstract
The utility model discloses a two -stage decompression adjusting valve. The problem of the technique is solved: to the single -stage relief pressure valve among the prior art, can't satisfy the technical problem of the requirement of the higher and quantitative pressure of firm output of pressure required precision. The technical scheme who takes is that a two -stage decompression adjusting valve includes the valve body, one -level decompression piston, second grade decompression piston and exhaust piston, the setting of one -level decompression piston is in the valve chamber, and the setting of second grade decompression piston is in the valve chamber, and the exhaust piston setting just is located between one -level decompression piston and the second grade decompression piston in the valve chamber. The advantage, this two -stage decompression adjusting valve adopts two sets of mechanism of decompressors, when air supply pressure changes, through the two -stage decompression behind the gaseous entering body of the mechanism of admitting air, can guarantee that rate of discharge, pressure do not change, makes the precision of output flow rate remain stable and be accurate.
Description
Technical field
The utility model relates to a kind of gas pressure regulating valve, particularly a kind of two-stage decompression regulating valve.
Background technique
The fields such as industry, medical treatment, scientific research, usually all need to use gas decompression regulating valve, the gas regulation be stored in gas cylinder are become stable low-pressure gas, for use.
Existing gas pressure reducer is single-stage reduction valve, cannot meet the requirement of the higher and quantitative pressure of stable output of pressure precision requirement.
Model utility content
Technical problem to be solved in the utility model is, for single-stage reduction valve of the prior art, cannot meet the technical problem of the requirement of the higher and quantitative pressure of stable output of pressure precision requirement.
Design philosophy of the present utility model is, adopts two-stage decompression, meets the requirement of the higher and quantitative pressure of stable output of pressure precision requirement.
For solving upper technical problem, the technological scheme that the utility model is taked is:
A kind of two-stage decompression regulating valve, comprising: valve body, valve body is provided with gas inlet and gas outlet; Valve body arranges valve chamber; Gas inlet is communicated with the heat tunnel that valve body is provided with, and heat tunnel is communicated with valve chamber by gas-entered passageway;
Be arranged on the one-level decompression piston in valve chamber; One-level decompression piston comprises one-level decompression piston body, one-level relief spring, the first sealing O type circle, the second sealing O type circle and one-level regulating valve diaphragm seal; The central axis of one-level decompression piston body is provided with gas channel, and one-level regulating valve diaphragm seal is arranged on the one end for sealed gas passageway on one-level decompression piston body; One-level decompression piston body inlet hole is set, inlet hole communicates with gas channel; One-level relief spring is contained on the outer surface of one-level decompression piston body, and one-level decompression piston body is withstood in one end, and the other end withstands the internal chamber wall of valve chamber; The outer surface that first sealing O type circle and the second sealing O type circle are all contained in one-level decompression piston body is positioned at the both sides of one-level relief spring;
Be arranged on the second depressurized piston in valve chamber; Second depressurized piston comprises pressure adjustment screw, second depressurized spring, second depressurized piston only and secondary O RunddichtringO; Pressure adjustment screw is arranged in valve chamber by screw pair, and pressure adjustment screw is positioned at a side end of valve chamber; Withstand pressure adjustment screw for one end of second depressurized spring, and the other end withstands second depressurized piston only; Secondary O RunddichtringO is contained on the outer surface of second depressurized piston only; Second depressurized piston only is provided with a thrust thimble;
To be arranged in valve chamber and exhaust pition between one-level decompression piston and second depressurized piston; Exhaust pition comprises delivery valve seat, outlet valve body, outlet valve adjustment diaphragm seal, installs screw and high pressure spring; Delivery valve seat is fixedly installed in valve chamber by screw pair, and the central axis of delivery valve seat is provided with adjustment pressure lumen, and an end of delivery valve seat is provided with air outlet hole, and air outlet hole is communicated with the gas outlet on valve body; Outlet valve body is arranged in adjustment pressure lumen; Outlet valve body is withstood in one end of high pressure spring, and the other end withstands one-level decompression piston body; Outlet valve adjustment diaphragm seal is arranged on outlet valve body; Screw is installed be arranged on outlet valve adjustment diaphragm seal, and thrust thimble withstands installation screw.
The improvement of technique scheme, valve body is also provided with gas pressure gage and detects interface and gas flow monitoring interface.The effect that the gas pressure gage that the utility model is arranged detects interface and gas flow monitoring interface is used for external gas pressure gage and gas flow meter, is convenient to gas pressure and the flow of observing discharge.
The further improvement of technique scheme, gas outlet is built with safety valve.The utility model is effectively ensure that the Security of gas in decompression process at gas outlet built with the effect of safety valve.
The further improvement of technique scheme, the sidewall of valve chamber is provided with one-level decompression emergency exit and second depressurized emergency exit.The effect that the utility model is provided with one-level decompression emergency exit and second depressurized emergency exit on the sidewall of valve chamber effectively ensure that the Security of gas in decompression process.
The utility model advantage compared with prior art:
1, this two-stage decompression regulating valve, adopt two groups of mechanisms of decompressor, when bleed pressure changes, entered after body through two-stage decompression by the gas of admission gear, rate of discharge can be ensured, pressure do not change, make the precision of output flow keep stable and accurately.
2, two groups of mechanisms of decompressor in this two-stage decompression regulating valve are all arranged in valve body, therefore compact structure, flexibly.
3, this two-stage decompression regulating valve, the sidewall of valve chamber is provided with one-level decompression emergency exit and second depressurized emergency exit; Effectively ensure that the Security of gas in decompression process.
4, this two-stage decompression regulating valve, the gas in gas cylinder is after one-level decompression piston reduces pressure, and the gas pressure in one-level decompression piston outlet port is 1.3-1.6Mpa.
5, this two-stage decompression regulating valve, the gas in gas cylinder is after the decompression of second depressurized piston, and the gas pressure of being discharged by gas outlet 3 is 0.25-0.35Mpa.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment.
Fig. 2 is the explosive view of embodiment.
Wherein, 1, valve body, 2, gas inlet, 3, gas outlet, 4, valve chamber, 5, heat tunnel, 6, gas-entered passageway, 7, one-level decompression piston body, 8, one-level relief spring, 9, first sealing O type circle, 10, second sealing O type circle, 11, one-level regulating valve diaphragm seal, 12, gas channel, 13, inlet hole, 14, pressure adjustment screw, 15, second depressurized spring, 16, second depressurized piston only, 17, secondary O RunddichtringO, 18, delivery valve seat, 19, outlet valve body, 20, screw is installed, 21, high pressure spring, 22, thrust thimble, 23, safety valve, 24, one-level decompression emergency exit, 25, heating pipe pedestal, 26, second depressurized emergency exit.
Embodiment
For making content of the present utility model more become apparent, be further described below in conjunction with accompanying drawing 1-2 and embodiment.
In order to make the purpose of this utility model, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Embodiment 1:
Fig. 1 is the structural representation of the present embodiment, as shown in Figure 1; Two-stage decompression regulating valve in the present embodiment comprises, valve body 1, one-level decompression piston, second depressurized piston and exhaust pition; One-level decompression piston is arranged in valve chamber 4, and second depressurized piston is arranged in valve chamber 4, and exhaust pition to be arranged in valve chamber 4 and between one-level decompression piston and second depressurized piston.
The present embodiment valve body 1 is provided with gas inlet 2 and gas outlet 3; Valve body 1 is arranged valve chamber 4; Gas inlet 2 is communicated with the heat tunnel 5 that valve body 1 is provided with, and heat tunnel 5 is communicated with valve chamber 4 by gas-entered passageway 6.Gas inlet 2 on the present embodiment valve body 1 in use, by the admission gear of outside, the gas be stored in gas cylinder is pumped in gas inlet 2, gas from gas suction port 2 enters in heat tunnel 5, heated by the heating pipe in the heating pipe pedestal 25 be arranged in heat tunnel 5, the gas after heated enters valve chamber 4 via gas-entered passageway 6.
One-level decompression piston comprises one-level decompression piston body 7, one-level relief spring 8, first seals O type circle 9, second and seals O type circle 10 and one-level regulating valve diaphragm seal 11.The central axis of one-level decompression piston body 7 is provided with gas channel 12, and one-level regulating valve diaphragm seal 11 is arranged on the one end for sealed gas passageway 12 on one-level decompression piston body 7; One-level decompression piston body 7 inlet hole 13 is set, inlet hole 13 communicates with gas channel 12; One-level relief spring 8 is contained on the outer surface of one-level decompression piston body 7, and one-level decompression piston body 7 is withstood in one end, and the other end withstands the internal chamber wall of valve chamber 4; The outer surface that first sealing O type circle 9 and the second sealing O type circle 10 are all contained in one-level decompression piston body 7 is positioned at the both sides of one-level relief spring 8.One-level decompression piston in the present embodiment in use, the gas in valve chamber 4 is entered via gas-entered passageway 6, seal O type circle 10 seal owing to sealing O type circle 9 and second by first between one-level decompression piston body 7 and valve chamber 4 inner cavity chamber, gas can only enter in one-level decompression piston body 7 by the inlet hole 13 on one-level decompression piston body 7, due to the difference of gas pressure, thus promotion one-level decompression piston body 7 does piston movement; Gas in the present embodiment mesohigh gas cylinder is after one-level decompression piston reduces pressure, and the gas pressure in one-level decompression piston outlet port is 1.3-1.6Mpa.
Second depressurized piston comprises pressure adjustment screw 14, second depressurized spring 15, second depressurized piston only 16 and secondary O RunddichtringO 17.Pressure adjustment screw 14 is arranged in valve chamber 4 by screw pair, and pressure adjustment screw 14 is positioned at a side end of valve chamber 4; Withstand pressure and adjust screw 14 in one end of second depressurized spring 15, the other end withstands second depressurized piston only 16; Secondary O RunddichtringO 17 is contained on the outer surface of second depressurized piston only 16; Second depressurized piston only 16 is provided with a thrust thimble 22.Second depressurized piston in the present embodiment in use, can export the gas of much pressure according to user's request and regulate; Concrete method is, rotation pressure adjustment screw 14, makes pressure adjustment screw 14 advance or retreat, promote second depressurized spring 15, thus promotion second depressurized piston only 16 does piston movement; The installation screw 20 in exhaust pition is withstood due to the thrust thimble 22 on second depressurized piston only 16, thus the force value of regulation output gas.
Exhaust pition comprises delivery valve seat 18, outlet valve body 19, outlet valve adjustment diaphragm seal 22, installs screw 20 and high pressure spring 21.Delivery valve seat 18 is fixedly installed in valve chamber 4 by screw pair, and the central axis of delivery valve seat 18 is provided with adjustment pressure lumen, and an end of delivery valve seat 18 is provided with air outlet hole 19, and air outlet hole 19 is communicated with the gas outlet 3 on valve body 1; Outlet valve body 19 is arranged in adjustment pressure lumen; Outlet valve body 19 is withstood in one end of high pressure spring 21, and the other end withstands one-level decompression piston body 7; Outlet valve adjustment diaphragm seal 22 is arranged on outlet valve body 19; Screw 20 is installed be arranged on outlet valve adjustment diaphragm seal 22, and thrust thimble 22 withstands installation screw 20.Exhaust pition in the present embodiment in use, due to the effect of second depressurized piston, promotes to install screw 20 and moves, thus regulate the gas pressure in one-level decompression piston outlet port; Gas in the present embodiment is after the decompression of second depressurized piston, and the gas pressure of being discharged by gas outlet 3 is 0.25-0.35Mpa.
Two-stage decompression regulating valve in the present embodiment, can reach the pressure precision error of 0.002Mpa, output gas flow of gas degree of accuracy is high.
The utility model does not relate to partly all same as the prior art or employing prior art and is realized.
Described in the utility model, concrete case study on implementation is only better case study on implementation of the present utility model, is not used for limiting practical range of the present utility model.Namely all equivalences done according to the content of the utility model claim change and modify, all should as technology category of the present utility model.
Claims (4)
1. a two-stage decompression regulating valve, is characterized in that, comprising: valve body (1), valve body (1) is provided with gas inlet (2) and gas outlet (3); Valve body (1) is arranged valve chamber (4); Gas inlet (2) is communicated with the heat tunnel (5) that valve body (1) is provided with, and heat tunnel (5) is communicated with valve chamber (4) by gas-entered passageway (6);
Be arranged on the one-level decompression piston in valve chamber (4); One-level decompression piston comprises one-level decompression piston body (7), one-level relief spring (8), the first sealing O type circle (9), the second sealing O type circle (10) and one-level regulating valve diaphragm seal (11); The central axis of one-level decompression piston body (7) is provided with gas channel (12), and one-level regulating valve diaphragm seal (11) is arranged on the one end for sealed gas passageway (12) on one-level decompression piston body (7); One-level decompression piston body (7) inlet hole (13) is set, inlet hole (13) communicates with gas channel (12); One-level relief spring (8) is contained on the outer surface of one-level decompression piston body (7), and one-level decompression piston body (7) is withstood in one end, and the other end withstands the internal chamber wall of valve chamber (4); First sealing O type circle (9) and second to seal on outer surface that O type circle (10) is all contained in one-level decompression piston body (7) and is positioned at the both sides of one-level relief spring (8);
Be arranged on the second depressurized piston in valve chamber (4); Second depressurized piston comprises pressure adjustment screw (14), second depressurized spring (15), second depressurized piston only (16) and secondary O RunddichtringO (17); Pressure adjustment screw (14) is arranged in valve chamber (4) by screw pair, and pressure adjustment screw (14) is positioned at a side end of valve chamber (4); Withstand pressure and adjust screw (14) in one end of second depressurized spring (15), the other end withstands second depressurized piston only (16); Secondary O RunddichtringO (17) is contained on the outer surface of second depressurized piston only (16); Second depressurized piston only (16) is provided with a thrust thimble (22);
To be arranged in valve chamber (4) and exhaust pition between one-level decompression piston and second depressurized piston; Exhaust pition comprises delivery valve seat (18), outlet valve body (19), outlet valve adjustment diaphragm seal (22), installs screw (20) and high pressure spring (21); Delivery valve seat (18) is fixedly installed in valve chamber (4) by screw pair, the central axis of delivery valve seat (18) is provided with adjustment pressure lumen, and an end of delivery valve seat (18) is provided with air outlet hole (19), air outlet hole (19) is communicated with the gas outlet (3) on valve body (1); Outlet valve body (19) is arranged in adjustment pressure lumen; Outlet valve body (19) is withstood in one end of high pressure spring (21), and the other end withstands one-level decompression piston body (7); Outlet valve adjustment diaphragm seal (22) is arranged on outlet valve body (19); Screw (20) is installed be arranged on outlet valve adjustment diaphragm seal (22), and thrust thimble (22) withstands installation screw (20).
2. two-stage decompression regulating valve as claimed in claim 1, is characterized in that, valve body (1) is also provided with gas pressure gage and detects interface and gas flow monitoring interface.
3. two-stage decompression regulating valve as claimed in claim 1, it is characterized in that, gas outlet (3) is built with safety valve (23).
4. two-stage decompression regulating valve as claimed in claim 1, is characterized in that, the sidewall of valve chamber (4) is provided with one-level decompression emergency exit (24) and second depressurized emergency exit (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520529168.1U CN204878910U (en) | 2015-07-20 | 2015-07-20 | Two -stage decompression adjusting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520529168.1U CN204878910U (en) | 2015-07-20 | 2015-07-20 | Two -stage decompression adjusting valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204878910U true CN204878910U (en) | 2015-12-16 |
Family
ID=54823284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520529168.1U Withdrawn - After Issue CN204878910U (en) | 2015-07-20 | 2015-07-20 | Two -stage decompression adjusting valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204878910U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003703A (en) * | 2015-07-20 | 2015-10-28 | 南京伟易达机电科技发展有限公司 | Two-stage pressure reduction regulating valve |
-
2015
- 2015-07-20 CN CN201520529168.1U patent/CN204878910U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003703A (en) * | 2015-07-20 | 2015-10-28 | 南京伟易达机电科技发展有限公司 | Two-stage pressure reduction regulating valve |
| CN105003703B (en) * | 2015-07-20 | 2017-05-24 | 南京伟易达机电科技发展有限公司 | Two-stage pressure reduction regulating valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151216 Effective date of abandoning: 20170524 |
|
| AV01 | Patent right actively abandoned |