CN202982970U - Decompressor of oxygen breathing apparatus - Google Patents
Decompressor of oxygen breathing apparatus Download PDFInfo
- Publication number
- CN202982970U CN202982970U CN 201320014331 CN201320014331U CN202982970U CN 202982970 U CN202982970 U CN 202982970U CN 201320014331 CN201320014331 CN 201320014331 CN 201320014331 U CN201320014331 U CN 201320014331U CN 202982970 U CN202982970 U CN 202982970U
- Authority
- CN
- China
- Prior art keywords
- valve
- flap
- pressure
- valve pocket
- decompression
- 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
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The utility model discloses a decompressor of an oxygen breathing apparatus. The decompressor comprises a decompression valve which consists of a valve cavity, a valve core and a resetting spring. The valve core is arranged in the valve cavity. The whole valve core consists of a decompression valve clack at the top and a positioning shaft in the center. The decompression valve clack is in matched connection with the valve cavity to divide the valve cavity to upper and lower cavities. The upper part of the positioning shaft is in moveably matched connection with a relieving valve clack which is in clearance fit with the side wall of the valve cavity. The lower side face of the relieving valve clack leans against the spring while the upper side face of the relieving valve clack leans against the lower side face of the relieving valve clack. Meanwhile, a circular stress groove is arranged on a contact face of the relieving valve clack and the decompression valve clack. The stress groove is directly communicated with the upper cavity of the valve cavity through a communication hole on the decompression valve clack. According to the decompressor provided by the utility model, the decompression valve and the relieving valve inside are integrally designed, so that the decompressor has the characteristics of compact structure, sensitive movement, cost-saving and convenience in installation, and the volume of the decompressor can be reduced.
Description
Technical field
The utility model relates to oxygen breathing apparatus, is specially the pressure reducer of oxygen breathing apparatus.
Background technology
In oxygen breathing apparatus, for guaranteeing normal oxygen supply, all be provided with the oxygen quantitative supply device in the Closed Circuit Breathing System of respirator, this feeding mechanism generally comprises oxygen cylinder, pressure reducer and quantitative flexible pipe, and wherein the effect of pressure reducer is the high pressure oxygen that oxygen cylinder is exported to be converted into can supply directly air-breathing low oxygen of people.
As shown in Figure 1, the structural representation for existing pressure reducer is provided with a pressure-reducing valve and relief valve in pressure reducer.Wherein pressure-reducing valve comprise valve pocket 11 ', locating slide sleeve 12 ', spool 13 ' and spring 14 ', described valve pocket 11 ' bottom be provided with air admission hole 111 ' with the high pressure oxygen input hole 5 of pressure reducer ' be communicated with, valve pocket 11 ' top be provided with low oxygen delivery outlet 3 ' and one with the relief hole 41 of relief valve 4 ' communicate '.Described spool 13 ' be built in valve pocket 11 ' in, its flap 131 by the top ' and be positioned at the locating shaft 132 at flap center ' form, described flap 131 ' be connected and valve pocket 11 is divided into upper chamber and lower chambers with valve pocket 11 ' movable sealing, locating shaft 132 ' middle part and locating slide sleeve 12 ' air-tight movable are connected, locating shaft 132 ' bottom and locating slide sleeve 12 ' be matched in clearance to be connected; Simultaneously locating shaft 132 ' lower sides be provided with some by-pass prots 1321 ', by-pass prot 1321 ' connections be positioned at the centre bore 1322 at locating shaft center ' and with valve pocket 11 ' upper chamber lead directly to.Described spring 14 ' one ends hold at flap 131 ' downside, the other end be arranged in the locating slot 112 of valve pocket 11 ' bottom '.
Under original state, because of the certain pre compressed magnitude of spring 14 ' have make whole spool 13 ' flap 131 ' hold all the time valve pocket 11 ' top, this moment spool 13 ' the passage 121 ' separate of locating shaft 132 ' bottom and locating slide sleeve 12 ' bottom.when high pressure oxygen by the input hole 5 of pressure reducer ' when coming in, air admission hole 111 through the valve pocket bottom, the passage 121 of locating slide sleeve bottom ', by-pass prot 1321 on spool locating shaft 132 ' lower sides ', centre bore 1322 ' and enter valve pocket 11 ' upper chamber and reduce pressure, and constantly entering along with oxygen in upper chamber, its air pressure also raises gradually, gas pressure increases gradually in the active force of flap 131 ' upper surface, in case this active force surpass spring 14 ' restoring force, will promote whole spool 13 ' move down and further Compress Spring 14 ', this process until spool locating shaft 132 ' the bottom seal the passage 121 of locating slide sleeve bottom ', stop further entering of high pressure oxygen with this, air pressure in valve pocket 11 ' upper chamber is maintained in setting range, be sent in the Closed Circuit Breathing System of respirator for low oxygen delivery outlet 3 ' output.And along with the discharge gradually of oxygen, the air pressure of valve pocket 11 ' upper chamber can reduce again gradually, in case the active force that flap 131 ' upper surface is subject to less than spring 14 ' restoring force, spool 13 ' will again be raised, what make spool locating shaft 132 ' lower surface and locating slide sleeve 12 ' bottom advances passage 121 ' separate, high pressure oxygen again replenish enter into valve pocket 11 ' upper chamber, by that analogy, can realize the step-down of high pressure oxygen and pressure is maintained in a stable scope, to adapt to the use of people when air-breathing.
At this, at some in particular cases, lost efficacy and to glide as spool, also can continue to raise after making air pressure in valve pocket 11 ' upper chamber reach setting value, at this moment, the relief valve 4 that is communicated with valve pocket 11 ' upper chamber ' will play the effect of pressure release is generally that air pressure in valve pocket 11 ' upper chamber is opened pressure release when reaching 1.1-1.7 times of setting value.
In above structure, pressure-reducing valve and relief valve 4 ' be independently to arrange separately, the increase that this can cause the pressure reducer overall volume to a certain extent is unfavorable for the location and installation on respirator, simultaneously relief valve 4 ' structure relatively complicated, trouble and cost are installed high.
The utility model content
For the problems referred to above, the utility model has designed a kind of pressure reducer of oxygen breathing apparatus, its pressure-reducing valve and relief valve to inside has carried out Integrated design, has compact conformation, is active in one's movements, cost economy, characteristics easy for installation, and can reduce to a certain extent the overall volume of pressure reducer.
For achieving the above object, the utility model is by the following technical solutions:
a kind of pressure reducer of oxygen breathing apparatus, comprise a pressure-reducing valve, whole pressure-reducing valve is by valve pocket, spool and back-moving spring form, described spool is built in valve pocket, whole spool is comprised of the decompression flap that is positioned at the top and the locating shaft that is positioned at the center, described decompression flap and valve pocket activity are connected and valve pocket are divided into upper chamber and lower chambers, it is characterized in that: the top movable engage sleeves of described locating shaft connects a pressure release flap, pressure release flap and valve pocket sidewall are the matched in clearance setting, the downside of pressure release flap holds on spring, the upper side of pressure release flap holds the downside at the decompression flap under the effect of spring precommpression restoring force, the contact-making surface of the flap of pressure release simultaneously and decompression flap is provided with the stress groove of an annular, described stress groove is straight-through by the upper chamber of the intercommunicating pore on the decompression flap and valve pocket.
Further, above-mentioned valve pocket is provided with a location chute in its bottom centre, and positioning runner bottom is provided with air admission hole and is communicated with the high pressure oxygen input hole of pressure reducer.
Further, the lower wall of above-mentioned valve pocket is provided with the relief hole that is in communication with the outside.
Further, the top of above-mentioned valve pocket is provided with the low oxygen delivery outlet.
Further, above-mentioned spool locating shaft middle part is connected with described positioning runner activity, and the locating shaft bottom is matched in clearance with positioning runner and is connected.
Further, the lower sides of above-mentioned locating shaft is provided with some by-pass prots, and by-pass prot is communicated with the centre bore be positioned at the locating shaft center and straight-through with valve pocket upper chamber.
Further, above-mentioned spring lower end is positioned in the spring stopper slot of valve pocket bottom.
Further, above-mentioned decompression flap upper surface is provided with the active force groove that increases surface area, and the upper surface area of whole decompression flap is the long-pending 1.1-1.7 of described stress rooved face times.
Further, above-mentioned pressure release flap is provided with O-ring seal with the contact-making surface of decompression flap.
Further, between above-mentioned decompression flap and valve pocket, between the top of pressure release flap and spool locating shaft, at least one O-ring seal is set all between the middle part of locating shaft and positioning runner.
The utility model directly with the pressure-relief valve structure Integrated design to pressure-reducing valve, can effectively reduce the discrete of relief valve, structure is compacter, easier for installation, can effectively reduce the cost of relief valve, and can reduce to a certain extent the overall volume of pressure reducer, facilitate the layout of pressure reducer on respirator to install.
Description of drawings
The structural representation of Fig. 1, existing pressure reducer;
Fig. 2, structural representation of the present utility model.
The specific embodiment
As shown in Figure 2, a kind of pressure reducer of oxygen breathing apparatus comprises a pressure-reducing valve, and whole pressure-reducing valve is comprised of valve pocket 1, spool 2 and back-moving spring 3.
Described valve pocket 1 is provided with a location chute 11 in its bottom centre, and positioning runner 11 bottoms are provided with air admission hole 111 and are communicated with the high pressure oxygen input hole 4 of pressure reducer.The top of valve pocket 1 is provided with low oxygen delivery outlet 5.The lower wall of valve pocket 1 is provided with the relief hole 6 that is in communication with the outside.
Described spool 2 is built in valve pocket 1, and whole spool 2 is comprised of the decompression flap 21 that is positioned at the top and the locating shaft 22 that is positioned at the center.
The flap 21 that wherein reduces pressure is connected and valve pocket 1 is divided into upper chamber and lower chambers with valve pocket 1 activity, at this, is the sealing that guarantees that both are connected, and is provided with O-ring seal 211 in both junctions.Flap 21 upper surfaces that reduce pressure simultaneously are provided with the active force groove 212 for increasing surface area.
The top movable engage sleeves of described locating shaft 22 connects a pressure release flap 7.Pressure release flap 7 is the matched in clearance setting and forms a pressure release passage with valve pocket 1 sidewall, and the downside of pressure release flap 7 holds on spring 3, and the upper side of pressure release flap 7 holds the downside at decompression flap 21 under the effect of spring 3 precommpression restoring forces.The contact-making surface of the flap of pressure release simultaneously 7 and decompression flap 21 is provided with the stress groove 8 of an annular, and this stress groove 8 can be arranged on decompression flap 21, also can be arranged on pressure release flap 7, adopts in the present embodiment the former.Simultaneously, hold the sealing of contact-making surface for guaranteeing pressure release flap 7 and decompression flap 21, be provided with O-ring seal 71 on the outer ring surface of both contacts.Described stress groove 8 is straight-through with the upper chamber of valve pocket 1 by the intercommunicating pore 81 on decompression flap 21.
In actual design, the 1.1-1.7 that generally needs pressure to arrive setting value doubly carries out pressure release again, and for this reason, the area of described decompression flap 21 upper surfaces is designed to 1.1-1.7 times of stress groove 8 surface areas.
Described spool locating shaft 22 middle parts and 11 activities of described positioning runner are connected, and are provided with O-ring seal 221 in both junctions.Locating shaft 22 bottoms are matched in clearance with positioning runner 11 and are connected.Simultaneously the lower sides of locating shaft 22 is provided with some by-pass prots 222, and by-pass prot 222 is communicated with the centre bore 223 that is positioned at locating shaft 22 centers and straight-through with valve pocket 1 upper chamber.
Described spring 3 lower ends are positioned in the spring stopper slot 12 of valve pocket 1 bottom.
Under original state, make pressure release flap 7 promote whole decompression flaps 21 to hold all the time on the top of valve pocket 1 because spring 3 has certain pre compressed magnitude, this moment spool 2 locating shaft 22 bottoms and the air admission hole 111 of positioning runner 11 bottoms be in released state.When high pressure oxygen is come in by the input hole 4 of pressure reducer, by-pass prot 222 on air admission hole 111, spool locating shaft lower sides, centre bore 223 and enter the upper chamber of valve pocket 1 and reduce pressure, and directly enter into stress groove 8 by the intercommunicating pore 81 on decompression flap 21 simultaneously.
And constantly entering along with oxygen in upper chamber, its air pressure also raises gradually, the active force of gas pressure on decompression flap 21 and pressure release flap 7 all increases simultaneously gradually, at this, because of the area of decompression flap 21 upper surfaces be stress groove 8 surface areas 1.1-1.7 doubly, the active force that the flap 21 that therefore reduces pressure is subject to be also pressure release flap 7 1.1-1.7 doubly.And along with the continuous injection of high pressure oxygen, in case the active force that decompression flap 21 is subject to surpasses the restoring force of spring 3, will drive that whole spool 2 and pressure release flap 7 synchronously move down and further Compress Spring 3, this process is until the bottom of spool locating shaft 22 seals the air admission hole 111 of positioning runner 11 bottoms, stop further entering of high pressure oxygen with this, air pressure in valve pocket 1 upper chamber is maintained in setting range, be sent in the Closed Circuit Breathing System of respirator for 5 outputs of low oxygen delivery outlet.
And along with the discharge gradually of oxygen, the air pressure of valve pocket 1 upper chamber can reduce again gradually, in case the active force that decompression flap 21 upper surfaces are subject to is less than the restoring force of spring 3, pressure release flap 7 and spool 2 will be raised again, make spool locating shaft 22 lower surfaces separate with the air admission hole 111 of positioning runner 11 bottoms, high pressure oxygen replenishes the upper chamber that enters into valve pocket 1 again, by that analogy, can realize the step-down of high pressure oxygen and pressure is maintained in a stable scope, to adapt to the use of people when air-breathing.
at this, situation about rising still appears when some air pressure that valve pocket 1 upper chamber in particular cases can occur reaches setting value, at this, the surface area of stress groove 8 is less than decompression flap 21 upper side areas, along with the continuation of air pressure is risen, in case pressure rises is to 1.1-1.7 times of setting value, the active force that pressure release this moment flap 7 is subject to is backed down with regard to being enough to overcome the restoring force of spring 3, oxygen enters valve pocket 1 lower chambers by the pressure release passage that the matched in clearance between pressure release flap 3 and valve pocket 1 forms, and and then discharge from the relief hole 6 of valve pocket 1 lower wall, carry out pressure release, this process is until within the air pressure of valve pocket 1 upper chamber gets back to 1.1 times of setting value, pressure release flap 7 just can again hold under the effect of spring 3 restoring forces at the downside of decompression flap 21 and close.
In above structure, the direct Integrated design of pressure-relief valve structure is to pressure-reducing valve, can effectively reduce the accessory number of relief valve, make the structure of whole pressure reducer compacter, easier for installation, can effectively reduce the cost of relief valve, and can reduce to a certain extent the overall volume of pressure reducer, facilitate the layout of pressure reducer on respirator to install.
The above, it is only better embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation know-why of the present utility model still belongs in the scope of technical solutions of the utility model any simple modification made for any of the above embodiments, equivalent variations or modification.
Claims (3)
1. the pressure reducer of an oxygen breathing apparatus, comprise a pressure-reducing valve, whole pressure-reducing valve is by valve pocket, spool and back-moving spring form, described spool is built in valve pocket, whole spool is comprised of the decompression flap that is positioned at the top and the locating shaft that is positioned at the center, described decompression flap and valve pocket activity are connected and valve pocket are divided into upper chamber and lower chambers, it is characterized in that: the top movable engage sleeves of described locating shaft connects a pressure release flap, pressure release flap and valve pocket sidewall are the matched in clearance setting, the downside of pressure release flap holds on spring, the upper side of pressure release flap holds the downside at the decompression flap under the effect of spring precommpression restoring force, the contact-making surface of the flap of pressure release simultaneously and decompression flap is provided with the stress groove of an annular, described stress groove is straight-through by the upper chamber of the intercommunicating pore on the decompression flap and valve pocket.
2. pressure reducer as claimed in claim 1, it is characterized in that: the lower wall of described valve pocket is provided with the relief hole that is in communication with the outside.
3. pressure reducer as described in claim 1 is characterized in that: described decompression flap upper surface is provided with the active force groove that increases surface area, the upper surface area of whole decompression flap be the long-pending 1.1-1.7 of described stress rooved face doubly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320014331 CN202982970U (en) | 2013-01-11 | 2013-01-11 | Decompressor of oxygen breathing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320014331 CN202982970U (en) | 2013-01-11 | 2013-01-11 | Decompressor of oxygen breathing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202982970U true CN202982970U (en) | 2013-06-12 |
Family
ID=48554202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320014331 Expired - Fee Related CN202982970U (en) | 2013-01-11 | 2013-01-11 | Decompressor of oxygen breathing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202982970U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111491698A (en) * | 2017-12-15 | 2020-08-04 | 德尔格安全股份两合公司 | Pre-flushing unit for carrying out a pre-flushing procedure in a breathing gas circuit of a circulating respirator |
| CN112370674A (en) * | 2020-11-05 | 2021-02-19 | 周圆鹤 | Positive pressure type air respirator for fire fighting |
-
2013
- 2013-01-11 CN CN 201320014331 patent/CN202982970U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111491698A (en) * | 2017-12-15 | 2020-08-04 | 德尔格安全股份两合公司 | Pre-flushing unit for carrying out a pre-flushing procedure in a breathing gas circuit of a circulating respirator |
| CN111491698B (en) * | 2017-12-15 | 2021-08-24 | 德尔格安全股份两合公司 | Pre-flushing unit for carrying out a pre-flushing procedure in a breathing gas circuit of a circulating respirator |
| US11738164B2 (en) | 2017-12-15 | 2023-08-29 | Dräger Safety AG & Co. KGaA | Preflushing unit for carrying out a preflushing operation in a breathing gas circuit of a closed-circuit respirator |
| CN112370674A (en) * | 2020-11-05 | 2021-02-19 | 周圆鹤 | Positive pressure type air respirator for fire fighting |
| CN112370674B (en) * | 2020-11-05 | 2022-01-25 | 郝志勇 | Positive pressure type air respirator for fire fighting |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103038520B (en) | Time-delay valve | |
| CN204127415U (en) | High-temperature pilot-operated type safety valve | |
| CN202982970U (en) | Decompressor of oxygen breathing apparatus | |
| CN201339617Y (en) | Booster oil cylinder | |
| CN104633264A (en) | Gas pressure reducing valve | |
| CN205190843U (en) | Integration valve | |
| CN201511958U (en) | Air control valve | |
| CN203718065U (en) | Pressure release valve | |
| CN109653998A (en) | A kind of hydrogenation stations autoclave diaphragm compressor flow structure and overflow method and hydrogenation stations autoclave diaphragm compressor | |
| CN214466381U (en) | Integrated air compensating valve with check valve | |
| CN209083530U (en) | A kind of hydrogenation stations autoclave diaphragm compressor flow structure and hydrogenation stations autoclave diaphragm compressor | |
| CN211474972U (en) | Pressure reducing valve with slide valve structure | |
| CN204337454U (en) | There is the oxygen supply of decompression | |
| CN104491964A (en) | Oxygen supply apparatus with pressure relief function | |
| CN2916218Y (en) | Direct-driving type high-pressure water-based unloading and overflow integrated valve | |
| CN104491963A (en) | Oxygen supply apparatus with quick charging function | |
| CN212429879U (en) | Ultrahigh pressure sealing structure for pressure regulator | |
| CN215522120U (en) | Low-temperature combined pressure regulating valve | |
| CN217672587U (en) | Split eccentric cam type handle shaft | |
| CN221170869U (en) | Multi-way valve with external control unloading | |
| CN217713787U (en) | Pressure regulating valve with manual pressure relief function | |
| CN203421231U (en) | Ultra-low pressure constant pressure check valve | |
| CN213236203U (en) | Pressure flow-limiting check valve | |
| CN203176472U (en) | Pressure reducing valve | |
| CN220980357U (en) | Pressure reducing valve |
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: 20130612 Termination date: 20190111 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |