CN201040139Y - Pressure reducing stabilizing valve - Google Patents
Pressure reducing stabilizing valve Download PDFInfo
- Publication number
- CN201040139Y CN201040139Y CNU2007200511801U CN200720051180U CN201040139Y CN 201040139 Y CN201040139 Y CN 201040139Y CN U2007200511801 U CNU2007200511801 U CN U2007200511801U CN 200720051180 U CN200720051180 U CN 200720051180U CN 201040139 Y CN201040139 Y CN 201040139Y
- Authority
- CN
- China
- Prior art keywords
- valve
- gas
- pressure
- air relief
- relief valve
- 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
Images
Landscapes
- Safety Valves (AREA)
Abstract
The utility model provides a pressure reducing and pressure maintaining valve, which includes a first pressure reducing valve with an air inlet and an air outlet, and a second pressure reducing valve, and the second pressure reducing valve has an air inlet and an air outlet; and the air outlet of the first pressure reducing valve is communicated with the air inlet of the second pressure reducing valve by an air guide tube. The utility model adopts a method of double pressure reduction to reduce pressure. The reduced air pressure is steady and the flow rate is constant. In addition, the pressure reducing valve has the advantages of convenient operation and high safety.
Description
Technical field
This utility model relates to a kind of decompression venting valve, especially a kind of medical decompression venting valve that makes the pressure stability of decompression back gas.
Background technology
Along with the development of ozone medical skill, use medical pure oxygen to produce ozone and promoted the use of.Existing ozone therapy instrument is supplied pure oxygen by medical oxygen cylinder, enters the ozone therapeutic apparatus device behind the high pressure oxygen process outlet valve of oxygen cylinder and the air relief valve.The oxygen initial pressure of existing oxygen cylinder is that (the said gas pressure of this utility model is the gas pressure intensity with respect to a normal atmosphere to 13 MPas, the i.e. pressure that increases on the basis of a normal atmosphere), the oxygen pressure that enters the ozone therapeutic apparatus device after the decompression should be controlled at below 0.05 MPa.And existing air relief valve is a guided piston type air relief valve or reed-type air relief valve, if use the guided piston type air relief valve, along with the pressure reduction of oxygen in the oxygen cylinder, its flow also reduces, and can not satisfy the requirement of ozone therapy instrument work; If use the reed-type air relief valve, then along with the reduction of oxygen pressure in the oxygen cylinder, decompression back oxygen pressure raises on the contrary, is unfavorable for the operate as normal of ozone therapy instrument.
As shown in Figure 1, Fig. 1 is the structure principle chart of guided piston type air relief valve.Guided piston type air relief valve 1 comprises valve seat 2 and bonnet 3, and bonnet 3 is connected with the external screw thread on valve seat 2 tops 4 with the female thread of valve seat 2 by bonnet 3 bottoms.In bonnet 3, be provided with a piston 11, the excircle of piston head 12 is provided with Radix Angelicae Dahuricae (Radix Heraclei Scabridi) plug ring 13, Radix Angelicae Dahuricae (Radix Heraclei Scabridi) plug ring 13 contacts with the inwall of bonnet 3, like this, piston head 12, Radix Angelicae Dahuricae (Radix Heraclei Scabridi) plug ring 13 define first valve pocket 21 of guided piston type air relief valve 1 with the upper inside wall of bonnet 3, the bottom surface of bonnet 3.Be provided with little spring 7 in first valve pocket 21, the upper end of little spring 7 is fixed on the spring base 8, and its lower end contacts with piston head 12, and applies downward power to piston head 12.The lower end of piston head 12 is connected with piston rod 15, be provided with valve piston ring 16 at piston rod 15 near lower end, valve piston ring 16 contacts with the inwall of valve seat 2, and defines second valve pocket 22 of guided piston type air relief valve 1 with the inwall of piston head 12, Radix Angelicae Dahuricae (Radix Heraclei Scabridi) plug ring 13, bonnet 3, the upper inside wall of valve seat 2.The piston rod 15 of piston 11 is arranged in second valve pocket 22, in the outer setting of piston rod 15 big spring 14 is arranged, and its lower end contacts with the upper surface of valve seat 2, and its upper end contacts with the lower surface of piston head 12, and applies the power that makes progress to piston head 12.Lower end and inside at piston rod 15 are formed with gas passage 17,18, and the lower end of gas passage 18 is communicated with gas passage 17, and its upper end is communicated with first valve pocket 21.
Outer wall at valve seat 2 is provided with gas feed 23 and gas outlet 24, and gas feed 23 is communicated with inlet channel 25, and gas outlet 24 is communicated with outlet passageway 26, and inlet channel 25 and outlet passageway 26 all are arranged on the inside of valve seat 2.Also be provided with relief valve connection 27 and pressure gauge connection 28 on the outer wall of valve seat 2, relief valve connection 27 and pressure gauge connection 28 are communicated with outlet passageway 26.
When not having gas to enter guided piston type air relief valve 1, the upper end of little spring 7 extrusion piston heads 12 makes the lower surface 19 of piston rod 15 closely contact with the periphery surface 29 of inlet channel 25 upper ends, and inlet channel 25 is blocked by piston rod 15 with outlet passageway 26 like this.When highly compressed gas when gas feed 23 enters inlet channel 25, the pressure of gas is greater than the restoring force of little spring 7, little spring 7 upwards contractions this moment, piston head 12, piston rod 15 all move up, the lower surface 19 of piston rod 15 separates with the periphery surface 29 of inlet channel 25 upper ends, and between forms relief passage 30.After gases at high pressure enter relief passage 30, portion gas enters first valve pocket 21 by gas passage 17,18, and in first valve pocket 21, form the bigger downward extrusion piston head 12 of pressure, but big spring 14 has restoring force upwards, make piston head 12 be in the equilbrium position, and guarantee that relief passage 30 can not be closed.At this moment the downward power that above piston head 12, has little spring 7 and gases at high pressure that piston head 12 is applied, the restoring force that makes progress that below piston head 12, has big spring 14 to apply, and the power that makes progress that below piston rod 15, has mobile gas to apply, try hard to keep and maintain an equal level behind the weighing apparatus when these four, piston head 12 also just is in the equilbrium position with piston rod 15.
According to bernoulli principle, the flow velocity and the pressure of gas are inversely proportional to, and the pressure of gases at high pressure is reduced, and will allow gas flow velocity in relief passage 30 increase.And under the certain situation of gas flow, the flow velocity of gas and the sectional area of gas passage are inversely proportional to, and therefore, the pressure of gas are reduced, suitably the sectional area of control relief passage 30.Because the pressure of gas is 13 MPas before the decompression, the pressure of decompression back gas is 0.05 MPa, therefore the flow velocity of gas need improve rapidly in relief passage 30, so the sectional area of relief passage 30 is very little, promptly the lower surface 19 of piston rod 15 is very near the periphery surface 29 of inlet channel 25 upper ends.Along with the consumption of gas in the oxygen cylinder, the pressure of gas also slowly reduces in the oxygen cylinder, and the pressure of the gas in inlet channel 25 also can be along with reduction.This moment, piston head 12 and piston rod 15 moved down under the pressure effect of little spring 7 above the piston head 12 and first valve pocket, 21 inner high voltage gases, and the sectional area of relief passage 30 further reduces.At this moment, if it is constant to keep the pressure of decompression back gas, then the flow of gas will reduce.At this moment, the user need upwards outward winding bonnet 3 a bit, and the sectional area of relief passage 30 is increased.But the regulating power of bonnet 3 is limited, and gas flow still can significantly reduce.When reality is used, when the pressure of oxygen cylinder was 5 MPas, the flow of gas had been reduced to original half after the decompression, can not satisfy the requirement of ozone therapy instrument operate as normal, in oxygen cylinder, just can not use in a large amount of oxygen of residue like this, cause great waste.
Existing ozone therapy instrument also can use the reed-type air relief valve.Referring to Fig. 2, Fig. 2 is the structure principle chart of reed-type air relief valve.Reed-type air relief valve 31 comprises valve seat 32 and bonnet 33, and the edge of reed 41 is fixed between valve seat 32 and the bonnet 33, and reed 41 just defines the 3rd valve pocket 53 with the inwall of bonnet 33.Be full of air in the 3rd valve pocket 53, its air pressure is a normal atmosphere.Center of top at bonnet 33 is provided with bolt 36, and the top of bolt 36 is formed on the outside of bonnet 33, and its underpart is formed on the inside of bonnet 33.Be provided with big spring 37 in the 3rd valve pocket, first spring base 38 of its upper end closely contacts with the lower surface of bolt 36, and second spring base 39 of its lower end closely contacts with reed 41.
Being provided with thimble 42 below reed 41, being provided with thimble seat 43 in the outside of thimble 42, fixedlys connected with valve cavity wall 50 in the bottom 44 of thimble seat 43.In the space that reed 41 and valve seat 32 inwalls form, reed 41, valve seat 32 inwalls, thimble 42, thimble seat 43 define second valve pocket 52 with the outer wall of valve cavity wall 50, and thimble 42, thimble seat 43 then define first valve pocket 51 with valve cavity wall 50.Be provided with little spring 46 in first valve pocket 51, the 3rd spring base 47 of its upper end contacts with thimble 42, and the 4th spring base 48 of its lower end is fixed on the bottom surface of valve seat.
The outer wall of valve seat 32 be provided with gas advance 56 and gas go out 58, be connected with outlet passageway 59 with inlet channel 57 respectively.Inlet channel 57 is communicated with the gas feed 56 and first valve pocket 51, and gases at high pressure can enter first valve pocket 51 by gas feed 56, inlet channel 57.Outlet passageway 59 is communicated with second valve pocket 52 and gas outlet 58, and post-decompression gas can be transported in the ozone therapy instrument by outlet passageway 59, gas outlet 58.
When reed-type air relief valve 31 was not unlocked, the lower surface 45 of thimble seat 43 closely contacted with the upper surface of the 3rd spring base 47, and first valve pocket 51 and second valve pocket 52 are blocked.When needing to open reed-type air relief valve 31, regulate bolt 36, it is moved down and push big spring 37, after big spring 37 is squeezed, apply a downward restoring force by reed 41 to thimble 42, thimble 42 just pushes the 3rd spring base 47 downwards, and this moment, the lower surface 45 of thimble seat 43 separated with the upper surface of the 3rd spring base 47, formed relief passage 60.
When the gas pressure in the oxygen cylinder is big, the gas pressure that enters first valve pocket 51 is also bigger, and this moment, the pressure of gas applied power upwards to thimble, made the sectional area of relief passage 60 very little, thereby the flow velocity of gas in relief passage 60 can increase sharply, and its pressure also descends rapidly.Post-decompression gas enters second valve pocket by the gas passage 55 that is formed between thimble 42 and the thimble seat 43, and is transported to reed-type air relief valve 31 outsides by outlet passageway 59, gas outlet 58.Consumption along with oxygen in the oxygen cylinder, the pressure of its gas constantly descends, enter first valve pocket, 51 gas pressures also along with decline, the restoring force that big spring 37 applies downwards can be greater than the pressure of gas in first valve pocket 51 and the restoring force sum that little spring 46 upwards applies, thimble 42 moves down, the sectional area of relief passage 60 constantly increases, and the flow velocity of gas also slows down thereupon, and post-decompression gas pressure also just constantly rises.In the use of reality, when the air pressure in the oxygen cylinder was 3 MPas, the pressure of decompression back gas had risen to 0.2 MPa, and this also can produce the danger of high pressure blast not only bad for the operate as normal of ozone therapy instrument.When using reed-type air relief valve 31, the user needs constantly to regulate the sectional area of bolt 36 with control relief passage 60, and the pressure stability that guarantees output gas is in 0.05 MPa.So not only bring inconvenience, in case maloperation, the accident of also may blasting take place to use.
Summary of the invention
At the problems referred to above, this utility model provides a kind of safe and reliable, stable and easy to operate decompression venting valve of decompression back gas pressure.
For achieving the above object, the decompression venting valve that this utility model provides comprises that with the one-level air relief valve described one-level air relief valve has a gas feed and a gas outlet, this decompression venting valve also comprises the second depressurized valve, and described second depressurized valve has a gas feed and a gas outlet; The gas outlet of described one-level air relief valve is communicated with by airway with the gas feed of described second depressurized valve, and described airway is withstand voltage airway.
Preferred embodiment of the utility model is that the one-level air relief valve is the guided piston type air relief valve, and the second depressurized valve is the reed-type air relief valve.
By such scheme as seen, this utility model uses two air relief valve that gases at high pressure are reduced pressure, gas pressure difference before and after each air relief valve decompression is compared and can be significantly reduced with existing air relief valve, and the pressure oscillation of decompression back gas is less, can be constant on user's setting value.And when using the reed-type air relief valve as one-level air relief valve of the present utility model or second depressurized valve, the user does not need to regulate bolt just can obtain constant compression force, easy to operate, and can avoid the generation of explosion accident, and security performance improves greatly.
Description of drawings
Fig. 1 is the structure principle chart of guided piston type air relief valve;
Fig. 2 is the structure principle chart of reed-type air relief valve;
Fig. 3 is the structure principle chart of this utility model embodiment;
The utility model is described in further detail below in conjunction with drawings and Examples.
The specific embodiment
Referring to Fig. 3, present embodiment is made up of one-level air relief valve 61, second depressurized valve 62 and airway 63.One-level air relief valve 61 is the guided piston type air relief valve, and second depressurized valve 62 is the reed-type air relief valve, and airway 63 is withstand voltage airway, is made by withstand voltage metal or other pressure-resistant material.The gases at high pressure that transport from oxygen cylinder enter valve body by the gas feed 23 of guided piston type air relief valve 61, entering airway 63 through one-level decompression back by gas outlet 24.Still higher through the post-decompression gas pressure of one-level, can't directly be supplied to the ozone therapy instrument to use, these gases enter valve body and carry out second depressurized by the gas feed 56 of reed-type air relief valve 62, gas pressure through second depressurized just meets the requirement that the ozone therapy instrument uses, and can be transported in the ozone therapy instrument by the gas outlet 58 of reed-type air relief valve 62 and go.
This utility model uses two air relief valve that gases at high pressure are carried out two-stage decompression, and gas pressure difference is less before and after each air relief valve decompression, and decompression back gas pressure is stable.For example guided piston type air relief valve 61 is reduced to 0.2 MPa with the pressure of the gases at high pressure of 13 MPas in the present embodiment, reed-type air relief valve 62 is reduced to 0.05 MPa with the pressure of the gas of 0.2 MPa again, like this, the pressure of each air relief valve decompression back gas just can be well controlled, and can be stabilized in the scope of setting.To describe this work process in detail below.
After gases at high pressure enter guided piston type air relief valve 61 from oxygen cylinder, apply upwards power to piston rod 15, the lower surface 19 of piston rod 15 is separated with the periphery surface 29 of inlet channel 25 upper ends and form relief passage 30.Because this moment, the pressure of decompression back gas was still higher, gas flow rate increases little, so the sectional area of relief passage 30 is bigger, and promptly the lower surface 19 of piston rod 15 maintains a certain distance with the periphery surface 29 of inlet channel 25 upper ends.Along with the consumption of gas in the oxygen cylinder, the pressure of gas is also along with decline, and the sectional area of relief passage 30 can reduce, but its amplitude that reduces is little, and the flow of gas is significantly descended.Like this, the pressure of process guided piston type air relief valve 61 post-decompression gases can be stabilized near 0.2 MPa, and gas flow also can be guaranteed.
Enter airway 63 through the post-decompression gas of one-level.Airway 63 connects the gas outlet 24 of guided piston type air relief valve 61 and the gas feed 56 of reed-type air relief valve 62.Pressure is after the gas of 0.2 MPa enters reed-type air relief valve 62 from airway 63, less to the power that thimble 42 applies, the sectional area of air guide channel 60 is bigger, but still can guarantee that gas flow rate increases within the specific limits, and its pressure also is reduced in the scope of setting.Because carry the pressure of the gas of coming can be stabilized in about 0.2 MPa from guided piston type air relief valve 61, the user does not just need to regulate bolt 36, post-decompression gas pressure also can be stabilized in about 0.05 MPa, and gas flow also can be guaranteed.
Decompression venting valve of the present utility model adopts the pressure reduction of the method for two-stage decompression with gases at high pressure, not only make pressure stability, the constant flow of decompression back gas, and as long as just can use after when bringing into use, regulating the bolt 36 of the bonnet 3 of guided piston type air relief valve 61 and reed-type air relief valve 62, do not need re-adjustment in the use afterwards, can effectively prevent misoperation of users like this and cause the generation of security incident that security performance improves greatly.
Certainly, this utility model not only can be used for the ozone therapy instrument, the armarium that also can be used for other, even in the non-armarium, what promptly be connected with the gas feed 23 of guided piston type air relief valve 61 not only can be high-pressure oxygen cylinder, also can be other container that gases at high pressure are housed, the gas outlet 58 of reed-type air relief valve 62 not only can be connected with the ozone therapy instrument, also can be connected with other low pressure gas equipment.
In practical application of the present utility model, the one-level air relief valve not only can be the guided piston type air relief valve, also can be the air relief valve of reed-type air relief valve or other type, the second depressurized valve not only can be the reed-type air relief valve, also can be the air relief valve of guided piston type air relief valve or other type.That is to say, the cooperation of two air relief valve has multiple situation in this utility model, as two guided piston type air relief valve cooperate, two reed-type air relief valve cooperate, the cooperating of guided piston type air relief valve and reed-type air relief valve, reed-type air relief valve and guided piston type air relief valve cooperate or the guided piston type air relief valve cooperates or the like with the air relief valve of other type.
It is emphasized that this utility model is not limited to above-mentioned embodiment, also should be included in the protection domain of this utility model claim as the variation of a small amount of such as pressure change of gas before and after the change of air relief valve type, the decompression.
Claims (4)
1. decompression venting valve comprises
The one-level air relief valve, described one-level air relief valve has a gas feed and a gas outlet;
It is characterized in that:
The second depressurized valve, described second depressurized valve has a gas feed and a gas outlet;
The gas outlet of described one-level air relief valve is communicated with by airway with the gas feed of described second depressurized valve.
2. decompression venting valve according to claim 1 is characterized in that:
Described airway is withstand voltage airway.
3. decompression venting valve according to claim 1 and 2 is characterized in that:
Described one-level air relief valve is guided piston type air relief valve or reed-type air relief valve.
4. decompression venting valve according to claim 1 and 2 is characterized in that:
Described second depressurized valve is guided piston type air relief valve or reed-type air relief valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200511801U CN201040139Y (en) | 2007-04-28 | 2007-04-28 | Pressure reducing stabilizing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200511801U CN201040139Y (en) | 2007-04-28 | 2007-04-28 | Pressure reducing stabilizing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201040139Y true CN201040139Y (en) | 2008-03-26 |
Family
ID=39251843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200511801U Expired - Fee Related CN201040139Y (en) | 2007-04-28 | 2007-04-28 | Pressure reducing stabilizing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201040139Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108855597A (en) * | 2017-05-09 | 2018-11-23 | 美天施生物科技有限责任公司 | The column system of rechargeable fill |
| CN113932008A (en) * | 2021-10-21 | 2022-01-14 | 贺尔碧格传动技术(常州)有限公司 | Pressure stabilizer of pneumatic gear shifting booster |
| CN114159105A (en) * | 2022-01-14 | 2022-03-11 | 上海立升医疗科技有限公司 | Continuous low-temperature biopsy safety gas supply system and low-temperature biopsy device |
-
2007
- 2007-04-28 CN CNU2007200511801U patent/CN201040139Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108855597A (en) * | 2017-05-09 | 2018-11-23 | 美天施生物科技有限责任公司 | The column system of rechargeable fill |
| CN108855597B (en) * | 2017-05-09 | 2022-07-26 | 美天施生物科技有限两合公司 | Rechargeable column system |
| CN113932008A (en) * | 2021-10-21 | 2022-01-14 | 贺尔碧格传动技术(常州)有限公司 | Pressure stabilizer of pneumatic gear shifting booster |
| CN113932008B (en) * | 2021-10-21 | 2022-11-11 | 贺尔碧格传动技术(常州)有限公司 | Pressure stabilizer of pneumatic gear shifting booster |
| CN114159105A (en) * | 2022-01-14 | 2022-03-11 | 上海立升医疗科技有限公司 | Continuous low-temperature biopsy safety gas supply system and low-temperature biopsy device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201040139Y (en) | Pressure reducing stabilizing valve | |
| CN208610247U (en) | A kind of hydraulic pump that can gently go up and down | |
| CN213986460U (en) | Natural gas hydrate inverse phase transition formation evolution law simulation device | |
| CN110701353A (en) | Oxygen supply pressure reducing valve for parachuting | |
| CN203463740U (en) | Pressure regulating and unloading valve | |
| KR101030754B1 (en) | Valve apparatus for portable bottle charged with oxygen | |
| CN209671698U (en) | A kind of overflow valve | |
| CN210196340U (en) | Adjustable protection type air spring | |
| CN201944353U (en) | High pressure gas reducing valve | |
| KR20110070111A (en) | Tension gas spring | |
| CN201795124U (en) | Diaphragm pressure reducer with high-pressure output port | |
| CN207316177U (en) | A kind of integrated form valve body | |
| CN207168801U (en) | A kind of portable respiration equipment | |
| CN102392909B (en) | Pressure limiting mechanism of pressure vessel | |
| CN2638773Y (en) | Battleneck valve | |
| CN103912699B (en) | The special economic pressure regulator valve of welded insulated gas cylinder | |
| CN207742576U (en) | Make machinery setting and the regulating mechanism of air pressure constant in closed container | |
| CN209414297U (en) | A kind of pneumatic auxiliary supporting device | |
| CN203868684U (en) | Trace-gas pump | |
| CN2646489Y (en) | Container valve | |
| CN108433322B (en) | A kind of lotion pump | |
| CN111664276A (en) | Pressure-adjustable high-low pressure conversion valve body | |
| CN109630880A (en) | A kind of high-pressure storage tank pressure relief device | |
| CN107837470B (en) | Air supply valve of integrated expiratory valve of small volume | |
| CN109958806A (en) | A kind of Pneumatic automobile pneumatic power control device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHUHAI XYKONE MEDICAL SCIENCE + TECHNOLOGY CO., LT Free format text: FORMER OWNER: YIKE MEDICAL EQUIPMENT CO., LTD., ZHUHAI CITY Effective date: 20120202 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120202 Address after: 519080, Guangdong, Zhuhai, Tang Tang, 99 University Road, Zhuhai, Guangdong hi tech industrialization demonstration base three floor Patentee after: Newikou Medical Science & Technology Co., Ltd. Zhuhai Address before: 519080, Guangdong, Zhuhai University Road, 99 high-tech base, three, three Patentee before: Zhuhai Yike Medical Instrument Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080326 Termination date: 20150428 |
|
| EXPY | Termination of patent right or utility model |