CN114288429B - Positive pressure inert gas protection circulation dry heat device for medical protective article disinfection - Google Patents
Positive pressure inert gas protection circulation dry heat device for medical protective article disinfection Download PDFInfo
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- CN114288429B CN114288429B CN202111677897.8A CN202111677897A CN114288429B CN 114288429 B CN114288429 B CN 114288429B CN 202111677897 A CN202111677897 A CN 202111677897A CN 114288429 B CN114288429 B CN 114288429B
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Abstract
A positive pressure inert gas protection circulation dry heating device for disinfecting medical protective articles comprises a bacteria and toxin inactivation cabin, wherein a cabin cover and a cover lock are arranged at the top of the bacteria and toxin inactivation cabin, a pulley bracket and a hooking point are arranged on the cabin cover, the cabin cover can be opened, a vacuumizing air valve, an inert gas inlet valve, an inert gas outlet valve and a circulation fan which is connected with an external circulation pipeline through a cooler and a dryer are arranged on the bacteria and toxin inactivation cabin, and the outlet of the circulation fan is circularly communicated into the bacteria and toxin inactivation cabin through a filter and a heater; according to the invention, the articles to be sterilized are sterilized in the bacteria and virus inactivation cabin through the positive pressure gas atmosphere, so that the penetration capacity of sterilization is improved, the inert gas can prevent the oxidation of protective articles, and the treatment efficiency can be improved by circulating dry heat; compared with other disinfection modes, the integral disinfection device has the characteristics of safety, environmental protection and high efficiency.
Description
Technical Field
The invention belongs to the field of medical instruments, and particularly relates to a positive pressure inert gas protection circulation dry heat device for disinfecting medical protective articles.
Background
In the initial stage of outbreak of high infectious diseases, the original material purchasing channel of an infectious disease hospital is blocked or even has short-term interruption due to epidemic situations, and protective articles in the hospital are likely to be greatly in short supply due to the proliferation of patients and the comprehensive upgrade of the protection level. If a set of operable sterilization system is provided, the infectious bacteria can be inactivated quickly and efficiently on the premise of not damaging the protection function of the protective articles, and other toxic and harmful substances are not generated in the whole treatment process, so that the protective articles can be effectively recycled, and the shortage of protective articles is relieved.
In fact, various conventional disinfection and regeneration technologies capable of reaching the medical grade are widely applied, such as dry heat sterilization, high-pressure steam sterilization, ethylene oxide sterilization, ultraviolet sterilization, ozone sterilization, microwave sterilization and the like, and are used for treating uniform, medical tools and instruments. The sterilization method of the reusable apparatus commonly used in hospitals comprises high-temperature high-pressure sterilization, dry heat sterilization, ethylene oxide sterilization and the like. The most widely used high-temperature high-pressure sterilization and dry heat sterilization can cause serious damage to the filtering material when the medical protective product is treated, for example, a mask is taken as an example, the high temperature can cause the deformation of the mask, and high-pressure water vapor can cause the aggregation of mask fibers and the loss of static electricity; ethylene oxide is a flammable and explosive hypertoxic drug, and long shelf time is needed for resolving ethylene oxide residues; ozone, ultraviolet and microwave disinfection methods have poor penetrability and are only suitable for surface disinfection; therefore, the conventional technologies are not suitable for being used in regeneration of medical protective articles under emergency situations. Relevant patents are selected through similar research, and the following are found: the disinfection cabinet for protective clothing of CN203970961 uses uv and ozone for disinfection, and as mentioned above, it has poor penetrability and is difficult to completely inactivate bacteria and viruses; the disinfection cabin of the protective clothing described in CN03265604 adopts disinfectant to disinfect the protective clothing, but the aqueous solution can seriously damage the fiber structure of the melt-blown cloth; CN 209450975 describes a disinfection cabinet for towel disinfection, where the high temperature and oxygen environment used may damage the fibers of the meltblown fabric, and indeed the penetration is poor by hot air alone; CN 209790429 describes only an article storage cabinet with air circulation, and no measures for sterilization are described. Therefore, the prior art can not meet the requirements of rapid, safe and thorough sterilization of medical protective articles.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a positive pressure protective gas circulation dry heat device and a positive pressure protective gas circulation dry heat method for disinfecting medical protective articles, which have the two aims of inactivating pathogenic microorganisms and protecting the integrity of the protective articles and have the characteristics of easy realization, high efficiency, good penetrability and no toxic and harmful emission.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a positive pressure inert gas protection circulation dry heat device for disinfecting medical protective articles comprises a bacteria toxicity inactivation cabin 1 with a heat insulation layer, wherein the top of the bacteria toxicity inactivation cabin 1 is provided with a cabin cover 3 and a cover lock 2, the cabin cover 3 is provided with a pulley bracket 13 and a hook point 14, and the hook point 14 is connected with a balance weight 15 through the pulley bracket 13;
the bacteria and virus inactivation cabin 1 is provided with an air extraction valve 7, and the air extraction valve 7 is connected with a vacuum filter 21 and a vacuum pump 22 through an air extraction pipeline;
an inert gas inlet valve 5 and an inert gas exhaust valve 6 are respectively arranged in the bacteria and virus inactivation cabin 1;
the bacteria and virus inactivation cabin 1 is provided with an air outlet 4, an external circulation pipeline of the air outlet 4 is connected with an inlet of a circulating fan 8 through a cooler 9 and a dryer 10, an outlet of the circulating fan 8 passes through a filter 11 and a heater 12, and is circularly communicated into the bacteria and virus inactivation cabin 1 through an air inlet 20.
The cooler 9 adopts an air cooling or water cooling mode.
The dryer 10 uses a water-absorbing material to dry the gas.
The filter 11 filters gas by adopting a porous filter medium.
The gas heater 12 is internally provided with a heating resistance wire.
The air inlet 20 adopts a distributed porous structure in the air inlet pipe 20-1 in the cabin.
The air outlet 4 and the air inlet 20 are diagonally distributed.
A movable shelf 23 is arranged in the bacteria and virus inactivation cabin 1.
The inner wall of the bacteria and virus inactivation cabin 1 is provided with a low pressure gauge 16, a temperature and humidity sensor 17, a high pressure gauge 18 and a safety air release valve 19.
The side, top or bottom of the sterilizing and inactivating cabin 1 is provided with a cabin door which is sealed by a sealing ring matched with the cover lock 2.
The innovation points of the invention are as follows: the penetration capacity of disinfection is improved through the positive pressure gas atmosphere, the protection of inert gas can prevent the oxidation of protective articles, and the circulation dry heat can improve the treatment effeciency. Compared with other disinfection modes, the integral disinfection device has the characteristics of safety, environmental protection and high efficiency.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a view showing the internal structure of the sterilizing compartment according to the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
Referring to fig. 1 and 2, a positive pressure inert gas protection circulation dry heat device for sterilizing medical protective articles comprises a sterilization and inactivation cabin 1 with a heat insulation layer and an external gas circulation pipeline outside the sterilization and inactivation cabin.
The main body of the bacteria and virus inactivation cabin 1 is cylindrical, the top of the bacteria and virus inactivation cabin 1 is provided with a cabin cover 3 and a cover lock 2, the cabin cover 3 is provided with a pulley bracket 13 and a hook point 14, and the hook point 14 is connected with a balance weight 15 through the pulley bracket 13; the hatch 3 can be lifted using the pulley bracket 13; the outside of the cabin body is provided with a heat insulation layer for keeping the temperature in the disinfection and inactivation cabin 1 stable.
The bacteria and virus inactivation cabin 1 is provided with an air extraction valve 7, and the air extraction valve 7 is connected with a vacuum filter 21 and a vacuum pump 22 through an air extraction pipeline and used for extracting air in the cabin.
The bacteria and virus inactivation cabin 1 is internally provided with an inert gas inlet valve 5 and an inert gas release valve 6 respectively.
The inner wall of the bacteria and virus inactivation cabin 1 is provided with a low pressure gauge 16, a temperature and humidity sensor 17, a high pressure gauge 18 and a safety air release valve 19, wherein the low pressure gauge 16 is used for measuring the low pressure in the cavity; the temperature and humidity sensor 17 is used for measuring the temperature and humidity inside the cabin; the high-pressure gauge 18 is used for measuring high-pressure air pressure in the cabin; the safety vent valve 19 automatically vents when the pressure reaches a limit value.
The disinfection and inactivation cabin 1 is internally provided with a movable shelf 23, the shelf 23 is used for placing articles to be disinfected, and the shelf 23 can be taken out from the cabin body.
The side, top or bottom of the disinfection and inactivation cabin 1 is provided with cabin doors, which are sealed by sealing rings and cover locks 2, and have good air tightness under positive pressure and negative pressure.
The bacteria and virus inactivation cabin 1 is provided with an air outlet 4, an external circulation pipeline of the air outlet 4 is connected with an inlet of a circulating fan 8 through a cooler 9 and a dryer 10, an outlet of the circulating fan 8 passes through a filter 11 and a heater 12, and finally is circularly connected into the bacteria and virus inactivation cabin 1 through an air inlet 20. The cooler 9 reduces the gas temperature by using an air cooling or water cooling mode; the gas passes through a cooler 9 and then reaches a dryer 10, and the dryer 10 dries the gas by adopting a water absorption material; the gas reaches the circulating fan 8 after passing through the dryer 10, the circulating fan 8 can realize the gas circulation of the pressure difference in the device, the gas reaches the filter 11 after passing through the circulating fan 8, and the filter 11 adopts a porous filter medium to filter the gas; the gas passes through the filter 11 and then reaches the gas heater 12, and a heating resistance wire is arranged in the gas heater 12 to heat the gas; the gas heated to a specific temperature enters the sterilization and deactivation cabin through the gas inlet 20, and the gas inlet 20 adopts a distributed porous structure in the gas inlet pipe 20-1 in the cabin and blows out from distributed pores in the cabin.
The cooler 9 adopts an air cooling or water cooling mode.
The dryer 10 uses a water-absorbing material to dry the gas.
The filter 11 filters gas by adopting a porous filter medium.
The gas heater 12 is provided with a heating resistance wire inside.
The air inlet 20 adopts a distributed porous structure in the air inlet pipe 20-1 in the cabin.
The air outlet 4 and the air inlet 20 are distributed diagonally.
The working principle of the invention is as follows:
when the sterilizing mask is used, the cover lock 2 is opened, the balance weight 15 is connected with the hatch cover 13 through the hook point 14, the balance weight 15 is pulled, the hatch cover 3 can be pulled up through the pulley bracket 13, the mask to be sterilized or the protective clothing is placed in the bacterial toxin inactivation cabin through the hook or the storage rack 23, the hatch cover 3 is covered, and the cover lock 2 is fastened.
And opening the extraction valve 7, starting the vacuum pump 22 to extract air, discharging the air by the vacuum pump 22 through the vacuum filter 21, and pumping the bacteria and virus inactivation cabin and the air circulation pipeline to a vacuum state. After the air extraction is completed, the air extraction valve 7 and the vacuum pump 22 are closed, the inert gas inlet valve 5 is opened, and inert gas is introduced, wherein the inert gas can be nitrogen or argon. The air is extracted to protect the protective article material from oxidation during heating, and the inert gas is replaced to provide heat transfer gas for subsequent sterilization. When the air pressure in the bacteria and virus inactivation cabin reaches 0.2Mpa, the inert gas inlet valve 5 is closed to stop charging. The use of high gas pressure can enhance the gas penetration, so that the gas not only treats the surface of the protective article, but also can deeply treat the inside of the protective material.
And (3) turning on the circulating fan 8 and the gas heater 12, starting the inert gas to circularly flow in the bacteria toxicity inactivation bin 1 and the gas circulating pipeline, and heating the gas flowing through the gas heater 12. When the gas with a certain temperature (110 ℃) flows out through the gas outlet 4 of the cabin, the gas is cooled by the cooler 9 to protect components in the pipeline, is dried and dewatered by the dryer 10 to reach the circulating fan 8, is accelerated by the circulating fan 8 to remove pollutants through the filter pipe 12, then the clean and dry gas is sent into the gas heater 12 to heat and replenish lost temperature, enters the disinfection and inactivation cabin through the inert gas inlet 20 after reaching a certain temperature (110 ℃), is blown out from the distributed porous of the inlet 20, reaches the surface and the inner layer of the protective articles on the shelf 23 or the hook due to certain air pressure and initial speed, heats pathogenic microorganisms in the shelf, can take away moisture and surface pollutants in the circulating flow, and finally flows out again from the gas outlet 4 of the cabin to enter the circulating pipeline.
After the multiple gas heating circulation disinfection treatment is completed, the gas heater 12 is closed, the circulating fan 8 continues to work, the cooler 9 continuously cools the gas flowing in the cooler, when the internal temperature is reduced to a safe temperature (such as 40 ℃), the cooler 9 stops working, the inert gas vent valve 6 is opened to discharge high-pressure gas, when the internal pressure reaches 0.1Mpa and is close to the atmospheric pressure, the cover lock 2 is opened, the counter weight 15 is pulled to open the cabin cover 3 of the bacteria and virus inactivation cabin, the treated protective articles such as a mask or protective clothing are taken out, and the heat circulation inert gas disinfection process is completed.
In the whole process, a temperature and humidity sensor 17 monitors the temperature and humidity value in the bacteria and virus inactivation cabin in real time, a low-pressure vacuum gauge 16 measures the air pressure in the cabin when the extracted vacuum air pressure is lower than the atmospheric pressure, a high-pressure vacuum gauge 18 measures the air pressure in the cabin when the introduced inert gas pressure is higher than the atmospheric pressure, and a safety air release valve 19 can automatically release air to prevent the internal air pressure from being too high when the internal air pressure is higher than a set value.
Tests show that the mask treated by the device of the invention can maintain the filtering performance of the mask at a set temperature of not higher than 110 ℃, and the conditions can inactivate bacteria. The polluted mask is taken and put into the device of the invention for disinfection and sterilization, and then sent to a third-party quality inspection company for detection according to the national standard YY0469-2011 medical surgical mask technical requirement, and all indexes of the polluted mask meet the requirements.
Claims (9)
1. A positive pressure inert gas protection circulation dry heat device for disinfecting medical protective articles is characterized by comprising a bacteria and virus inactivation cabin (1) with a heat insulation layer, wherein the top of the bacteria and virus inactivation cabin (1) is provided with a cabin cover (3) and a cover lock (2), the cabin cover (3) is provided with a pulley bracket (13) and a hook point (14), and the hook point (14) is connected with a balance weight (15) through the pulley bracket (13);
an air extraction valve (7) is arranged on the bacteria and virus inactivation cabin (1), and the air extraction valve (7) is connected with a vacuum filter (21) and a vacuum pump (22) through an air extraction pipeline;
an inert gas inlet valve (5) and an inert gas exhaust valve (6) are respectively arranged in the bacteria and virus inactivation cabin (1);
the sterilizing and inactivating cabin (1) is provided with an air outlet (4), an external circulation pipeline of the air outlet (4) is connected with an inlet of a circulating fan (8) through a cooler (9) and a dryer (10), an outlet of the circulating fan (8) is communicated into the sterilizing and inactivating cabin (1) through a filter (11) and a heater (12) in a circulating manner through an air inlet (20);
the side, top or bottom of the sterilization and inactivation cabin (1) is provided with a cabin door, and the cabin door is sealed by a sealing ring matched with a cover lock (2).
2. The positive pressure inert gas protection circulation dry heat device for disinfecting medical protective articles according to claim 1, characterized in that the cooler (9) adopts an air cooling or water cooling mode.
3. The positive pressure inert gas protection circulation dry heat device for disinfecting medical protective articles according to claim 1, characterized in that the dryer (10) uses water-absorbing material to dry gas.
4. A positive pressure inert gas protected cyclic dry heat device for sterilization of medical protective articles according to claim 1, wherein said filter (11) employs porous filter media to filter gas.
5. The positive pressure inert gas protection circulation dry heat device for the disinfection of the medical protective articles as claimed in claim 1, wherein a heating resistance wire is arranged in the heater (12).
6. The positive pressure inert gas protection circulation dry heat device for disinfecting medical protective articles according to claim 1, characterized in that the air inlet (20) of the air inlet pipe (20-1) in the chamber adopts a distributed porous structure.
7. A positive pressure inert gas protection circulation dry heat device for disinfecting medical protective articles according to claim 1, characterized in that the air outlet (4) and the air inlet (20) are diagonally distributed.
8. The positive pressure inert gas protection circulation dry heat device for the disinfection of the medical protective articles according to claim 1, wherein a movable shelf (23) is arranged in the disinfection and inactivation cabin (1).
9. The positive pressure inert gas protection circulation dry heat device for sterilizing the medical protective articles according to claim 1, wherein a low pressure gauge (16), a temperature and humidity sensor (17), a high pressure gauge (18) and a safety air release valve (19) are arranged on the inner wall of the bacteria and virus inactivation cabin (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111677897.8A CN114288429B (en) | 2021-12-31 | 2021-12-31 | Positive pressure inert gas protection circulation dry heat device for medical protective article disinfection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111677897.8A CN114288429B (en) | 2021-12-31 | 2021-12-31 | Positive pressure inert gas protection circulation dry heat device for medical protective article disinfection |
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| CN114288429A CN114288429A (en) | 2022-04-08 |
| CN114288429B true CN114288429B (en) | 2022-11-25 |
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Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5120512A (en) * | 1986-02-24 | 1992-06-09 | Senichi Masuda | Apparatus for sterilizing objects to be sterilized |
| CN2576235Y (en) * | 2002-10-10 | 2003-10-01 | 上海三源生物应用技术有限公司 | Sterilizing disinfeting apparatus |
| CN103908688B (en) * | 2014-04-16 | 2016-08-24 | 张家港市华菱医疗设备制造有限公司 | A kind of air supply system of Medical low-temperature steam formaldehyde sterilizing cabinet |
| CN203852608U (en) * | 2014-05-08 | 2014-10-01 | 西昌学院 | Drying sterilization device |
| KR101749574B1 (en) * | 2015-12-14 | 2017-06-21 | 주식회사 플라즈맵 | Vacuum Package Bag Plasma Sterilization Apparatus |
| CN106421828A (en) * | 2016-09-19 | 2017-02-22 | 成都测迪森生物科技有限公司 | Steam sterilizer |
| CN208436100U (en) * | 2017-07-12 | 2019-01-29 | 峨眉山通惠制药有限公司 | A kind of protective garment bactericidal unit |
| CN211382905U (en) * | 2018-03-23 | 2020-09-01 | 吴筑渝 | Instrument degassing unit for gastroenterology |
| CN212090267U (en) * | 2019-11-20 | 2020-12-08 | 杨仁源 | High-pressure disinfection cabinet for oral administration |
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