CN206261955U - A kind of mining chemical oxygen self-rescuer of low temperature - Google Patents
A kind of mining chemical oxygen self-rescuer of low temperature Download PDFInfo
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- CN206261955U CN206261955U CN201621334117.4U CN201621334117U CN206261955U CN 206261955 U CN206261955 U CN 206261955U CN 201621334117 U CN201621334117 U CN 201621334117U CN 206261955 U CN206261955 U CN 206261955U
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 67
- 239000001301 oxygen Substances 0.000 title claims abstract description 67
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 67
- 239000000126 substance Substances 0.000 title claims abstract description 24
- 238000005065 mining Methods 0.000 title claims abstract description 12
- 230000029058 respiratory gaseous exchange Effects 0.000 claims abstract description 45
- 239000003814 drug Substances 0.000 claims abstract description 28
- 239000011358 absorbing material Substances 0.000 claims abstract description 15
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 10
- 239000007858 starting material Substances 0.000 claims abstract description 8
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 210000002345 respiratory system Anatomy 0.000 abstract description 12
- 238000006243 chemical reaction Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 7
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 230000004913 activation Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 230000034994 death Effects 0.000 description 2
- 231100000517 death Toxicity 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 230000007096 poisonous effect Effects 0.000 description 2
- 206010003497 Asphyxia Diseases 0.000 description 1
- 206010006784 Burning sensation Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Respiratory Apparatuses And Protective Means (AREA)
Abstract
本实用新型公开了一种低温矿用化学氧自救器，包括气囊、呼吸阀、呼吸软管、口具、鼻夹、启动器、呼气导管、生氧药剂、生氧药罐及启动针；所述的呼吸软管与气囊连通，呼吸软管上设有呼吸阀，呼吸软管端部设有口具和鼻夹；所述的气囊通过呼气导管与生氧药罐连通，生氧药罐内设有启动器和生氧药剂；其特征是：紧贴气囊内壁设有锡箔，气囊内壁上涂有吸热材料；所述的生氧药罐外侧设有外罐，生氧药罐和外罐之间设有吸热材料。本实用新型针对化学氧自救器在使用过程中生氧温度过高的问题，在生氧药罐和外罐之间及气囊内壁上设有吸热材料，降低了进入人体呼吸道的氧气温度，提高了本实用新型的安全性和舒适性。
The utility model discloses a low-temperature mining chemical oxygen self-rescuer, which comprises an air bag, a breathing valve, a breathing hose, a mouthpiece, a nose clip, a starter, an exhalation catheter, an oxygen-generating medicine, an oxygen-generating medicine tank and a starting needle; The breathing hose is in communication with the airbag, the breathing hose is provided with a breathing valve, and the end of the breathing hose is provided with a mouthpiece and a nose clip; The tank is equipped with a starter and an oxygen-generating agent; its characteristics are: a tin foil is arranged close to the inner wall of the airbag, and the inner wall of the airbag is coated with a heat-absorbing material; A heat absorbing material is arranged between the outer tanks. The utility model aims at the problem that the oxygen generation temperature of the chemical oxygen self-rescuer is too high during use, and heat-absorbing materials are arranged between the oxygen generation medicine tank and the outer tank and on the inner wall of the air bag, which reduces the temperature of oxygen entering the human respiratory tract and improves Ensured the safety and comfort of the utility model.
Description
技术领域technical field
本实用新型属于防护装备技术领域，特别是涉及一种低温矿用化学氧自救器。The utility model belongs to the technical field of protective equipment, in particular to a chemical oxygen self-rescuer for low-temperature mines.
背景技术Background technique
多年的数据统计表明，井下作业人员因吸入有毒有害气体而窒息或中毒死亡人数占矿井灾害死亡总体人数的90%以上。为了保证矿井作业人员在发生安全事故后有足够的时间逃离事故现场，《煤矿安全规程》中规定，矿井工人在井下作业时必须佩戴自救器。化学氧自救器具有体积小、质量轻、使用环境不受限制、放氧量大等优点，在我国矿山行业得到广泛使用。因此，改进或提高矿山井下自救装置的技术水平和产品质量，对保证煤矿井下作业人员的生命安全与健康有着重要的意义。Years of statistics show that the death toll of underground workers due to suffocation or poisoning due to inhalation of toxic and harmful gases accounts for more than 90% of the total number of deaths in mine disasters. In order to ensure that mine workers have enough time to escape from the accident scene after a safety accident, the "Coal Mine Safety Regulations" stipulates that mine workers must wear self-rescuers when working underground. The chemical oxygen self-rescuer has the advantages of small size, light weight, unrestricted use environment, and large oxygen release, and is widely used in my country's mining industry. Therefore, improving or improving the technical level and product quality of self-rescue devices in mines is of great significance to ensure the safety and health of coal mine operators.
目前，使用较为广泛的是ZH型化学氧自救器，矿山常用ZH30型和ZH45型，这两种型号自救器均采用KO 2 作为生氧药剂，利用KO 2 与人体呼出的CO 2 发生反应产生人体呼吸所需氧气；这两种型号自救器均采用循环式导气方式，生氧药罐位于气囊下部，人体呼出的气体通过呼吸软管和呼气阀经过通气管到达生氧罐，与生氧罐内的生氧药剂反应产生氧气，生成的氧气进入气囊后通过排气阀进入呼吸软管供给使用者呼吸；为了降低吸入氧气的温度，在呼吸软管内部加装了降温器，利用物理降温方法以降低进入使用者呼吸道的氧气温度，根据MT425-1995《隔绝式化学氧自救器》的要求，该降温方法能将进入使用者呼吸道的氧气温度降低至不超过55℃。但是，对于使用者而言55℃的氧气温度还是较高，进入人体呼吸道将引起人体呼吸道不适，甚至会造成使用者呼吸道灼热感而吐出呼吸软管。因此，降低进入人体呼吸道的氧气温度很有必要。At present, the ZH type chemical oxygen self-rescuer is widely used. ZH30 and ZH45 are commonly used in mines. These two types of self-rescuers both use KO 2 as the oxygen-generating agent, and use KO 2 to react with the CO 2 exhaled by the human body to generate human oxygen. Oxygen required for breathing; these two types of self-rescuers both adopt a circular air-guiding method. The oxygen-generating medicine tank is located at the lower part of the airbag. The oxygen-generating agent in the tank reacts to generate oxygen, and the generated oxygen enters the airbag and then enters the breathing hose through the exhaust valve to supply the user to breathe; in order to reduce the temperature of the inhaled oxygen, a cooler is installed inside the breathing hose, using physical cooling The method is to reduce the temperature of oxygen entering the user's respiratory tract. According to the requirements of MT425-1995 "Isolated Chemical Oxygen Self-Rescuer", this cooling method can reduce the temperature of oxygen entering the user's respiratory tract to no more than 55°C. However, for the user, the oxygen temperature of 55° C. is still relatively high, and entering the human respiratory tract will cause discomfort in the human respiratory tract, and even cause a burning sensation in the user's respiratory tract and spit out the breathing hose. Therefore, it is necessary to reduce the temperature of oxygen entering the human respiratory tract.
影响化学氧自救器生氧温度的因素较多，针对我国ZH型化学氧自救器生氧温度过高的问题，国内聂雅玲，毛欣等学者以ZH30、ZH45型化学氧自救器为基础，通过对导气方式，生氧药罐结构，药罐尺寸等多方面的改进，并经实验测试，进入使用者呼吸道的氧气温度最低也有53℃。There are many factors affecting the oxygen generation temperature of the chemical oxygen self-rescuer. In view of the problem of the high oxygen temperature of the ZH type chemical oxygen self-rescuer in my country, domestic scholars such as Nie Yaling and Mao Xin based on the ZH30 and ZH45 type chemical oxygen self-rescuer. The air conduction method, the structure of the oxygen tank, the size of the tank, etc. have been improved. According to the experimental test, the temperature of the oxygen entering the user's respiratory tract is as low as 53°C.
专利CN 203389234 U公开了《一种化学氧自救器》，其原理是在生氧药剂中加入少量LiOH，利用LiOH与CO 2 反应的放热量小于KO 2 与CO 2 反应的放热量，以降低生氧温度。但，由于LiOH与CO 2 的化学反应不能产生氧气，可能导致CO 2 的实际利用率下降和氧气供给不足的情况，反应过程中产生的H 2 O可能导致生氧药剂的凝结，增大了呼吸阻力。Patent CN 203389234 U discloses "A Chemical Oxygen Self-Rescuer". The principle is to add a small amount of LiOH to the oxygen-generating agent, and utilize the heat release of the reaction between LiOH and CO2 to be smaller than the heat release of the reaction between KO2 and CO2 to reduce the production rate. oxygen temperature. However, since the chemical reaction between LiOH and CO2 cannot produce oxygen , it may lead to a decrease in the actual utilization rate of CO2 and insufficient oxygen supply. resistance.
发明内容Contents of the invention
为了解决上述技术问题，本实用新型提供一种安全性、舒适性好的，生氧温度较低的低温矿用化学氧自救器。In order to solve the above-mentioned technical problems, the utility model provides a low-temperature mining chemical oxygen self-rescuer with good safety and comfort and low oxygen generation temperature.
本实用新型采用的技术方案是：一种低温矿用化学氧自救器，包括气囊、呼吸阀、呼吸软管、口具、鼻夹、启动器、呼气导管、生氧药剂、生氧药罐及启动针；所述的呼吸软管与气囊连通，呼吸软管上设有呼吸阀，呼吸软管端部设有口具和鼻夹；所述的气囊通过呼气导管与生氧药罐连通，生氧药罐内设有启动器和生氧药剂；紧贴气囊内壁设有锡箔，气囊内壁上涂有吸热材料；所述的生氧药罐外侧设有外罐，生氧药罐和外罐之间设有吸热材料。The technical scheme adopted by the utility model is: a chemical oxygen self-rescuer for low-temperature mining, including an airbag, a breathing valve, a breathing hose, mouthpieces, a nose clip, a starter, an exhalation catheter, an oxygen-generating medicine, and an oxygen-generating medicine tank and an activation needle; the breathing hose is communicated with the airbag, the breathing hose is provided with a breathing valve, and the end of the breathing hose is provided with a mouthpiece and a nose clip; the airbag is communicated with the oxygen-generating medicine tank through the exhalation catheter , a starter and an oxygen-generating agent are arranged in the oxygen-generating medicine tank; tin foil is arranged close to the inner wall of the airbag, and an endothermic material is coated on the inner wall of the airbag; an outer tank is arranged outside the oxygen-generating medicine tank, and the oxygen-generating medicine tank and A heat absorbing material is arranged between the outer tanks.
上述的低温矿用化学氧自救器中，所述的气囊上设有排气阀。In the above-mentioned low-temperature mine chemical oxygen self-rescuer, the air bag is provided with an exhaust valve.
上述的低温矿用化学氧自救器中，所述的呼吸软管内设有降温器，口具处设有牙垫。In the above low-temperature mine chemical oxygen self-rescuer, the breathing hose is provided with a cooling device, and the mouthpiece is provided with a tooth pad.
上述的低温矿用化学氧自救器中，还包括上外壳，所述的气囊、呼吸阀、呼吸软管、牙垫、口具、鼻夹、降温器等设于上外壳内部，上外壳与外罐通过锁口带相连，锁口带通过封印条锁口。The above-mentioned chemical oxygen self-rescuer for low-temperature mining also includes an upper shell, and the air bag, breathing valve, breathing hose, dental pad, mouthpiece, nose clip, cooler, etc. are arranged inside the upper shell, and the upper shell is connected with the outer shell. The cans are connected by a locking strap which is locked by a seal strip.
上述的低温矿用化学氧自救器中，所述的吸热材料采用的是CuSO 4 ·5H 2 O。 In the above low-temperature mine chemical oxygen self-rescuer, the heat absorbing material is CuSO 4 ·5H 2 O.
与现有技术相比，本实用新型的有益效果是：Compared with the prior art, the beneficial effects of the utility model are:
1）本实用新型的生氧药罐与外罐之间填充有吸热材料，气囊的内壁上设有吸热材料，吸热材料能够吸收生氧药罐内生氧药剂生氧反应产生的热量，降低生氧温度，提高本实用新型的安全性和舒适性。1) The oxygen-generating medicine tank and the outer tank of the utility model are filled with heat-absorbing materials, and the inner wall of the airbag is provided with heat-absorbing materials, which can absorb the heat generated by the oxygen-generating reaction of the oxygen-generating medicine in the oxygen-generating medicine tank , reduce the oxygen generation temperature, and improve the safety and comfort of the utility model.
2）本实用新型的呼吸软管内设有降温器，能够进一步降低进入人体呼吸道的氧气温度，保障进入人体呼吸道的氧气温度相对较低，进一步提高了本实用新型的安全性和舒适性。2) The breathing hose of the utility model is equipped with a cooling device, which can further reduce the temperature of the oxygen entering the human respiratory tract, and ensure that the temperature of the oxygen entering the human respiratory tract is relatively low, further improving the safety and comfort of the utility model.
3）本实用新型的气囊中采用锡箔隔绝吸热材料，可以防止气囊内表面喷涂的吸热材料粉末脱落混入气囊中的氧气中，提高了本实用新型的安全性。3) The airbag of the utility model uses tin foil to isolate the heat-absorbing material, which can prevent the powder of the heat-absorbing material sprayed on the inner surface of the airbag from falling off and mixing into the oxygen in the airbag, which improves the safety of the utility model.
4）本实用新型采用CuSO 4 ·5H 2 O作为吸热材料，保证了其在常温条件下的相对稳定，不会影响矿用化学氧自救器的使用期限，而且能够满足MT425-1995《隔绝式化学氧自救器》中对氧气温度（≤55℃）的要求。4) This utility model adopts CuSO 4 ·5H 2 O as the heat-absorbing material, which ensures its relative stability under normal temperature conditions, does not affect the service life of the mining chemical oxygen self-rescuer, and can meet the requirements of MT425-1995 "isolated type Requirements for oxygen temperature (≤55°C) in Chemical Oxygen Self-Rescuer.
附图说明Description of drawings
图1为本实用新型的卸掉上外壳后的结构图。Fig. 1 is a structural diagram of the utility model after removing the upper shell.
图2为本实用新型的安装上外壳后的结构图。Fig. 2 is a structural diagram of the utility model after the casing is installed.
图中：1.气囊；2.呼吸阀；3.呼吸软管；4.牙垫；5.口具；6.鼻夹；7.排气阀；8.启动器；9.呼气导管；10.生氧药剂；11.生氧药罐；12.外罐；13.锡箔；14.吸热材料；15.启动针；16.降温器；17.锁口带；18.上外壳；19.标卡牌；20封印条。In the figure: 1. Air bag; 2. Breathing valve; 3. Breathing hose; 4. Teeth pad; 5. Mouthpiece; 6. Nose clip; 7. Exhaust valve; 10. Oxygen-generating agent; 11. Oxygen-generating medicine tank; 12. Outer tank; 13. Tin foil; 14. Endothermic material; .Standard card; 20 seal strips.
具体实施方式detailed description
下面结合附图对本实用新型作进一步的说明。Below in conjunction with accompanying drawing, the utility model is further described.
如图1、图2所示，本实用新型包括气囊1、呼吸软管3、口具5、鼻夹6、排气阀7、启动器8、呼气导管9、生氧药罐11、外罐12、启动针15、锁口带17、上外壳18及封印条20；气囊1，呼吸阀2，呼吸软管3，牙垫4，口具5，鼻夹6等均置于上外壳18内部。呼吸软管3与气囊1连通；呼吸软管3与气囊1的连接处设有呼吸阀2，呼吸软管3端部设有鼻夹6和口具5，口具5处设有牙垫4，呼吸软管3内设有降温器16，气囊1上设有排气阀7。紧贴气囊1内壁设有锡箔13，气囊1内壁上涂有吸热材料14，吸热材料14采用的是CuSO 4 ·5H 2 O。气囊1通过呼气导管9与生氧药罐11连通；生氧药罐11内部设有启动器8和生氧药剂10，生氧药罐11外设有外罐12，生氧药罐11与外罐12之间设有吸热材料14。启动针15位于外罐12上部，外罐12上还设有标卡牌19，锁口带17用于连接上外壳18和外罐12，防止上外壳18掉落，封印条20用于锁口带17锁口，防止其断裂。As shown in Figure 1 and Figure 2, the utility model includes an airbag 1, a breathing hose 3, a mouthpiece 5, a nose clip 6, an exhaust valve 7, a starter 8, an exhalation catheter 9, an oxygen-generating medicine tank 11, an outer Tank 12, activation needle 15, lock belt 17, upper shell 18 and seal strip 20; air bag 1, breathing valve 2, breathing hose 3, tooth pad 4, mouthpiece 5, nose clip 6, etc. are placed on the upper shell 18 internal. The breathing hose 3 communicates with the airbag 1; the connection between the breathing hose 3 and the airbag 1 is provided with a breathing valve 2, the end of the breathing hose 3 is provided with a nose clip 6 and a mouthpiece 5, and the mouthpiece 5 is provided with a dental pad 4 , The breathing hose 3 is provided with a cooler 16, and the airbag 1 is provided with an exhaust valve 7. A tin foil 13 is provided close to the inner wall of the airbag 1, and the inner wall of the airbag 1 is coated with a heat-absorbing material 14, which is CuSO 4 ·5H 2 O. The air bag 1 communicates with the oxygen generating medicine tank 11 through the exhalation catheter 9; the oxygen generating medicine tank 11 is provided with a starter 8 and an oxygen generating medicine 10 inside, and an outer tank 12 is arranged outside the oxygen generating medicine tank 11, and the oxygen generating medicine tank 11 and A heat absorbing material 14 is arranged between the outer tanks 12 . The starting pin 15 is located on the upper part of the outer tank 12, and the outer tank 12 is also provided with a label 19, and the lock belt 17 is used to connect the upper shell 18 and the outer tank 12 to prevent the upper shell 18 from falling, and the sealing strip 20 is used for the lock With 17 locks to prevent it from breaking.
当井下发生安全事故时，使用者用手掰开锁口带17，直至封印条20断开后丢弃锁口带17与封印条20，去掉上外壳18，此时本实用新型如图1所示，拔出启动针15后，气囊1逐渐鼓起，立即拔掉口具5，并同时将口具5塞入口中，用牙齿咬紧牙垫4并紧闭嘴唇。用双手拉开鼻夹6，将鼻夹6紧紧地夹住鼻子防止有毒有害气体进入人体呼吸道。在该实用新型的使用过程中用嘴呼吸，使用者呼出的气体通过口具5，经过呼吸软管3、呼吸阀2，进入生氧药罐11，人体呼出气体中的水蒸气和CO 2 与生氧药罐11内的生氧药剂10（KO 2 ）反应产生O 2 ，当生氧反应放出的热量使生氧药罐11的温度高于45℃时，生氧药罐11外部的吸热材料14会同时发生吸热反应，吸收生氧药罐11内的部分热量。生氧药罐11内产生的氧气采用循环式回路的导气方式，从生氧药罐11的上方通过呼气导管10进入气囊1，气囊1中的高温氧气会经过锡箔13导热到气囊1内的吸热材料14。当气囊1内的高温氧气依旧高于45℃时，吸热材料14会发生吸热反应吸收囊1中高温氧气的部分热量，降低氧气温度。气囊1中的低温氧气经过呼吸阀2与呼吸软管3时，呼吸软3内部的降温器16进一步保障进入口具5的氧气温度相对较低，通过口具5进入人体呼吸道供给使用者正常呼吸。当生氧药剂11（KO 2 ）生成的O 2 超出使用者的需氧量时，气囊1内的压力会逐渐增大，达到排气阀7的排气压力时，排气阀7的阀门会自动打开，排出多余气体，降低气囊1内压力，保障使用过程的正常进行。当气囊1内的压力小于排气阀7的排气压力时，排气阀7自动关闭，防止氧气泄漏或有毒有害气体进入气囊1。When a safety accident occurs underground, the user breaks the lock belt 17 by hand until the seal strip 20 is disconnected, discards the lock belt 17 and the seal strip 20, and removes the upper shell 18. At this time, the utility model is shown in Figure 1. After the starting pin 15 is pulled out, the air bag 1 bulges gradually, the mouthpiece 5 is pulled out immediately, and the mouthpiece 5 is stuffed into the mouth at the same time, the mouthpiece 4 is clenched with the teeth and the lips are tightly closed. Pull the nose clip 6 apart with both hands, and clamp the nose tightly with the nose clip 6 to prevent poisonous and harmful gases from entering the human respiratory tract. Breathe with the mouth during the use of this utility model, the gas exhaled by the user passes through the mouthpiece 5, passes through the breathing hose 3, the breathing valve 2 , and enters the oxygen-generating medicine tank 11, and the water vapor and CO in the exhaled gas of the human body are combined with the The oxygen-generating agent 10 ( KO 2 ) in the oxygen-generating medicine tank 11 reacts to produce O 2 , and when the heat released by the oxygen-generating reaction makes the temperature of the oxygen-generating medicine tank 11 higher than 45°C, the heat absorbed outside the oxygen-generating medicine tank 11 The material 14 will undergo an endothermic reaction at the same time, absorbing part of the heat in the oxygen generating medicine tank 11 . The oxygen generated in the oxygen medicine tank 11 adopts the gas conduction method of the circulation circuit, and enters the airbag 1 from the top of the oxygen medicine tank 11 through the exhalation catheter 10, and the high-temperature oxygen in the airbag 1 will conduct heat into the airbag 1 through the tin foil 13 The endothermic material 14. When the high-temperature oxygen in the airbag 1 is still higher than 45° C., the endothermic material 14 will undergo an endothermic reaction to absorb part of the heat of the high-temperature oxygen in the airbag 1 to lower the temperature of the oxygen. When the low-temperature oxygen in the airbag 1 passes through the breathing valve 2 and the breathing hose 3, the cooling device 16 inside the breathing soft 3 further ensures that the temperature of the oxygen entering the mouthpiece 5 is relatively low, and enters the human respiratory tract through the mouthpiece 5 to supply the user with normal breathing . When the O 2 generated by the oxygen-generating agent 11 ( KO 2 ) exceeds the oxygen demand of the user, the pressure in the airbag 1 will gradually increase, and when it reaches the exhaust pressure of the exhaust valve 7, the valve of the exhaust valve 7 will Automatically open, exhaust excess gas, reduce the pressure inside the airbag 1, and ensure the normal progress of the use process. When the pressure in the airbag 1 is less than the exhaust pressure of the exhaust valve 7, the exhaust valve 7 is automatically closed to prevent oxygen leakage or poisonous and harmful gases from entering the airbag 1.
Claims (5)
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621334117.4U CN206261955U (en) | 2016-12-07 | 2016-12-07 | A kind of mining chemical oxygen self-rescuer of low temperature |
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| CN201621334117.4U CN206261955U (en) | 2016-12-07 | 2016-12-07 | A kind of mining chemical oxygen self-rescuer of low temperature |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107998528A (en) * | 2017-12-29 | 2018-05-08 | 陕西斯达防爆安全科技股份有限公司 | A kind of chemical oxygen self-rescuer chemical pot for generating oxygen |
| CN108211151A (en) * | 2017-12-29 | 2018-06-29 | 陕西斯达防爆安全科技股份有限公司 | A kind of chemical oxygen self-rescuer |
| CN111905286A (en) * | 2019-05-10 | 2020-11-10 | 张祖雄 | Self-generating oxygen member and self-generating oxygen agent |
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2016
- 2016-12-07 CN CN201621334117.4U patent/CN206261955U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107998528A (en) * | 2017-12-29 | 2018-05-08 | 陕西斯达防爆安全科技股份有限公司 | A kind of chemical oxygen self-rescuer chemical pot for generating oxygen |
| CN108211151A (en) * | 2017-12-29 | 2018-06-29 | 陕西斯达防爆安全科技股份有限公司 | A kind of chemical oxygen self-rescuer |
| US11648425B2 (en) | 2017-12-29 | 2023-05-16 | Shaanxi Star Explosion Safety Polytron Technologies Inc | Chemical oxygen self-rescue device |
| CN111905286A (en) * | 2019-05-10 | 2020-11-10 | 张祖雄 | Self-generating oxygen member and self-generating oxygen agent |
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