CN113633792A - Sterilizer exhaust treatment device with biological emission safety and working method thereof - Google Patents

Sterilizer exhaust treatment device with biological emission safety and working method thereof Download PDF

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Publication number
CN113633792A
CN113633792A CN202110959326.7A CN202110959326A CN113633792A CN 113633792 A CN113633792 A CN 113633792A CN 202110959326 A CN202110959326 A CN 202110959326A CN 113633792 A CN113633792 A CN 113633792A
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exhaust
sterilization
cabin
pipeline
valve
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CN113633792B (en
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王佳宁
赵光宇
刘发柱
刘强
李华儒
王愚人
盛美娜
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Bingshan Songyang Biotechnology Dalian Co ltd
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Bingshan Songyang Biotechnology Dalian Co ltd
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A61L2/04—Heat
    • A61L2/06—Hot gas
    • A61L2/07—Steam
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L11/00—Methods specially adapted for refuse
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/26—Accessories or devices or components used for biocidal treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/005—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by heat treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/91—Bacteria; Microorganisms
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Epidemiology (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)

Abstract

The invention provides a sterilizer exhaust treatment device with biological emission safety and a working method thereof, wherein the device comprises: the device comprises a sterilization device, an exhaust gas collection and treatment device and a condensed water treatment device, wherein a first heating device is arranged in the sterilization device and is used for carrying out high-temperature sterilization on polluted articles and residual waste gas in the sterilization device; the exhaust gas collecting and processing device is connected with the sterilizing device and is used for collecting the waste gas discharged by the sterilizing device, and a second heating device is arranged in the exhaust gas collecting and processing device and is used for carrying out high-temperature sterilization on the waste gas; and the waste gas after sterilization in the sterilization device and the exhaust collection processing device is respectively introduced into the condensed water processing device for cooling and then is discharged into the atmosphere, so that the safe exhaust process without biological pollution leakage is realized. The invention can reduce the product maintenance period of the user, reduce the unnecessary labor capacity of the user and improve the customer satisfaction.

Description

Sterilizer exhaust treatment device with biological emission safety and working method thereof
Technical Field
The invention relates to the technical field of biological laboratory sterilization, in particular to a sterilizer exhaust treatment device with biological emission safety and a working method thereof.
Background
The preparation work before the sterilization of current steriliser has generally adopted the direct exhaust mode, and during the exhaust, because the cabin has not carried out the sterilization operation yet for there can be the pollution source in the exhaust process, and the exhaust directly gets into the atmosphere, causes the pollution source to leak, can not reach the biological emission security requirement.
Disclosure of Invention
According to the preparation work before sterilization of the existing sterilizer, a direct exhaust mode is generally adopted, and during exhaust, because sterilization operation is not carried out in a cabin, a pollution source exists in the exhaust process, exhaust directly enters the atmosphere, the pollution source is leaked, and the technical problem that the safety requirement of biological emission cannot be met is solved. The invention mainly utilizes the exhaust in the temperature and pressure raising and boosting process of the sterilization cabin, the atmospheric pressure is kept in the inner exhaust cabin, when the sterilization cabin is opened for exhaust, the exhaust process can be normally carried out because the pressure in the sterilization cabin is greater than that in the inner exhaust cabin, after the exhaust is finished, the exhaust valve is closed, the temperature and pressure raising and boosting of the inner exhaust cabin are also started, the pressure is higher than that of the sterilization cabin, and steam is supplemented to the sterilization cabin through the return pipeline to assist the temperature and pressure raising of the sterilization cabin. When the temperature in the sterilization cabin reaches the standard and the sterilization stage is started, the inner row cabin also starts the sterilization process with higher temperature, the sterilization time is shorter than the sterilization cabin time, after the sterilization of the inner row cabin is finished, sterile exhaust is carried out, and the residual gas after the sterilization is finished is cooled by a waste water tank and then is discharged into the atmosphere. And the sterilization cabin also finishes sterilization work subsequently, executes the same exhaust process, and realizes the safe exhaust process without biological pollution leakage.
The technical means adopted by the invention are as follows:
a sterilizer exhaust gas treatment device with bio-emission safety, comprising: the device comprises a sterilization device, an exhaust gas collection and treatment device and a condensed water treatment device, wherein a first heating device is arranged in the sterilization device and is used for carrying out high-temperature sterilization on polluted articles and residual waste gas in the sterilization device; the exhaust gas collecting and processing device is connected with the sterilizing device and is used for collecting the waste gas discharged by the sterilizing device, and a second heating device is arranged in the exhaust gas collecting and processing device and is used for carrying out high-temperature sterilization on the waste gas; and the waste gas after sterilization in the sterilization device and the exhaust collection processing device is respectively introduced into the condensed water processing device for cooling and then is discharged into the atmosphere, so that the safe exhaust process without biological pollution leakage is realized.
Further, sterilization apparatus adopts the sterilization cabin, and inside is equipped with the support frame for place the contaminated object, and the top is equipped with the sealing door structure, and the lateral wall is equipped with gas vent I, air inlet I and water inlet I, and the bottom is equipped with outlet I.
Furthermore, the exhaust gas collecting and processing device adopts an inner exhaust cabin, the top of the inner exhaust cabin is provided with a steam outlet, the bottom of the inner exhaust cabin is provided with a water outlet II, and the side wall of the inner exhaust cabin is provided with a water inlet II, an exhaust port II and an air inlet II;
the outside of the air inlet II is connected with one end of a polluted exhaust pipeline, the other end of the polluted exhaust pipeline is connected with the air outlet I, and polluted waste gas in the sterilization device is discharged into the exhaust collecting and processing device through the polluted exhaust pipeline; a pollution exhaust valve is arranged on the pollution exhaust pipeline;
the bottoms of the exhaust gas collection treatment device and the sterilization device are jointly connected with a drainage pipeline, wherein the drainage pipeline is provided with two branches, each branch is respectively connected with a drainage outlet II and a drainage outlet I, and an inner drainage cabin drainage valve and a sterilization cabin drainage valve are respectively arranged on the two branches; liquid level switches are arranged in the exhaust gas collecting and processing device and the sterilizing device.
Further, condensate water processing apparatus is by waste water tank and the exhaust pipe who is connected with waste water tank, and waste water tank embeds there is cooling water, and exhaust pipe is equipped with two branch pipelines, and first branch pipeline links to each other with gas vent II, and the second branch pipeline links to each other with polluting the exhaust pipe, is equipped with interior exhaust chamber discharge valve and sterilization cabin discharge valve on first branch pipeline and the second branch pipeline respectively for after letting in the waste water tank with the waste gas after the sterilization among sterilization apparatus and the exhaust collection processing apparatus respectively through exhaust pipe and cooling, the atmosphere of discharging.
Furthermore, the first heating device and the second heating device both adopt heating pipes, namely a first heating pipe and a second heating pipe, which are respectively used for heating external water introduced into the sterilization device and the exhaust gas collection and treatment device to generate high-temperature and high-pressure water vapor; the external water is provided through a water inlet pipeline, the water inlet pipeline is provided with two branch pipelines which are respectively connected with the air inlet I and the water inlet II, and the external water is introduced into the sterilization device and the exhaust gas collection and treatment device;
the two branch pipelines are respectively provided with a water inlet valve of the sterilization cabin and a water inlet valve of the inner discharge cabin for controlling the water inflow;
the heating power of the second heating pipe is larger than that of the first heating pipe.
The steam sterilization device comprises a steam feedback pipeline and a steam feedback valve arranged on the steam feedback pipeline, wherein one end of the steam feedback pipeline is connected with a steam outlet, and the other end of the steam feedback pipeline is connected with an air inlet I and used for introducing high-temperature steam generated by heating of the second heating device into the sterilization device, supplementing steam for the sterilization device and assisting the sterilization device in temperature rise and pressure rise.
Further, a safety valve of a sterilization chamber and a pressure gauge of the sterilization chamber are arranged on the side wall of the sterilization device; the side wall of the exhaust gas collecting and processing device is provided with an inner exhaust chamber safety valve and an inner exhaust chamber pressure gauge.
Further, the material of the exhaust gas collection processing device is Q245R, SUS304, SUS316L or SUS316 Ti.
The invention also provides a working method of the sterilizer exhaust treatment device with biological emission safety, which comprises the following steps:
step 1, firstly putting a polluted article on a support frame of a sterilization cabin, closing a sealing door, opening a water inlet valve of the sterilization cabin and a water inlet valve of an inner drainage cabin, wherein liquid level switches are respectively arranged in the sterilization cabin and the inner drainage cabin, respectively introducing external water into the sterilization cabin and the inner drainage cabin through water inlet pipelines, and stopping introducing the external water when the liquid level switches in the sterilization cabin and the inner drainage cabin are triggered;
step 2, a first heating pipe is arranged in the sterilization cabin, at the moment, the first heating pipe starts to heat, a pollution exhaust valve is opened, and polluted waste gas in the sterilization cabin is conveyed into an inner exhaust cabin through a pollution exhaust pipeline under the action of pressure;
step 3, after the air exhaust in the sterilization cabin is finished, closing the pollution exhaust valve, and starting the second heating pipe arranged in the inner exhaust cabin to work;
step 4, after the pressure in the inner exhaust chamber rises to the set pressure, the value of the pressure is larger than the pressure in the sterilization chamber, a steam feedback valve is opened, and high-temperature and high-pressure steam generated in the inner exhaust chamber returns to the sterilization chamber through a steam feedback pipeline for air supplement;
step 5, when the sterilization is started in the sterilization cabin, closing the steam feedback valve, and continuously increasing the pressure in the inner exhaust cabin to the set pressure; sterilizing the polluted gas in the inner exhaust cabin;
step 6, the sterilization time of the inner exhaust cabin is shorter than that of the sterilization cabin, after the sterilization of the inner exhaust cabin is finished, an exhaust valve of the inner exhaust cabin is opened, and sterilized waste gas is discharged into a waste water tank to be cooled and then is discharged into the atmosphere;
step 7, after the sterilization in the sterilization chamber is finished, opening an exhaust valve of the sterilization chamber, discharging the sterilized waste gas into a waste water tank, cooling and then discharging the waste gas into the atmosphere;
step 8, closing an exhaust valve of the sterilization cabin and an exhaust valve of the inner exhaust cabin after the sterilization cabin and the inner exhaust cabin are exhausted;
in the working process, the safety of the inner discharging cabin and the safety of the sterilizing cabin are respectively ensured through the safety valve of the inner discharging cabin and the safety valve of the sterilizing cabin; and the pressure values in the inner discharge cabin and the sterilization cabin are displayed in real time through the inner discharge cabin pressure gauge and the sterilization cabin pressure gauge. When the pressure in the two cabins is larger than the pressure bearing value, the safety valve is started to discharge the pressure. The exhaust gas before sterilization in the sterilization cabin is the polluted gas, the gas is completely received by the inner exhaust cabin, no exhaust equipment is arranged outside, and meanwhile, the polluted air exhausted into the inner exhaust cabin is subjected to thorough sterilization treatment in a high-temperature and high-pressure mode of the inner exhaust cabin, so that the safety is ensured.
Further, the pressure design pressure value of the inner discharge cabin is higher than that of the sterilization cabin; and a heat insulation layer is arranged outside the inner row cabin.
Compared with the prior art, the invention has the following advantages:
1. according to the sterilizer exhaust treatment device with biological emission safety and the working method thereof, the inner exhaust cabin collects and treats gas, no material consumption exists, and long-time operation can be realized, so that the product maintenance period of a user can be reduced, unnecessary labor of the user can be reduced, and the customer satisfaction can be improved.
2. The sterilizer exhaust treatment device with biological emission safety and the working method thereof provided by the invention are mainly suitable for the sterilization direction of a biological laboratory, mainly carry out sterilization treatment aiming at the load of pathogens (including viruses, bacteria and the like) with environmental hazards and biological hazards, and equipment does not directly emit hazard sources in the sterilization process.
3. According to the sterilizer exhaust treatment device with biological emission safety and the working method thereof, the design mode of the inner exhaust cabin can avoid the use of filters of consumable materials, and for customers, the filters do not need to be replaced regularly, so that the customer experience can be improved.
4. The sterilizer exhaust treatment device with biological emission safety and the working method thereof provided by the invention have the advantages that the design of the steam feedback pipeline can improve the heating efficiency in the sterilization cabin to a certain extent and shorten the equipment operation period.
In conclusion, the technical scheme of the invention can solve the problems that the preparation work before the sterilization of the existing sterilizer generally adopts a direct exhaust mode, and during exhaust, because the sterilization operation is not carried out in the cabin, a pollution source exists in the exhaust process, and the exhaust directly enters the atmosphere to cause the leakage of the pollution source, so that the safety requirement of biological emission cannot be met.
Based on the reasons, the invention can be widely popularized in fields such as college laboratories, biological safety laboratories of more than 3 grades, vaccine production enterprises and the like in places such as special environments and closed environment aseptic ventilation and treatment places which need biological safety requirements for sterilization and exhaust.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a bottom view of the present invention.
Fig. 3 is a side view of the present invention.
Fig. 4 is a top view of the present invention.
In the figure: 1. a safety valve of the sterilization chamber; 2. a sterilization chamber; 3. a water inlet valve of the sterilization cabin; 4. a water inlet pipeline; 5. a drain valve of the sterilization chamber; 6. a drain line; 7. an exhaust valve of the sterilization cabin; 8. an exhaust line; 9. polluting the exhaust pipeline; 10. a contaminated exhaust valve; 11. an exhaust valve of the inner exhaust cabin; 12. a drainage valve of the inner drainage cabin; 13. an inner row of cabins; 14. a wastewater tank; 15. a water inlet valve of the inner discharge cabin; 16. an inner cabin discharge safety valve; 17. an inner row cabin pressure gauge; 18. a steam feedback pipeline; 19. a steam feedback valve; 20. a sterilizing chamber pressure gauge.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. Any specific values in all examples shown and discussed herein are to be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
As shown in fig. 1 to 4, the present invention provides a sterilizer exhaust gas treatment device with bio-emission safety, which is a treatment scheme for a sterilizer exhaust process, comprising: the sterilization device, the exhaust gas collection and treatment device and the condensate water treatment device adopt a recognized and reliable high-temperature steam sterilization mode to treat exhaust gas in the pre-sterilization stage, and can achieve the purpose of effectively preventing the leakage of biological pollution in the exhaust process. Specifically, a first heating device is arranged in the sterilization device and is used for carrying out high-temperature sterilization on the polluted articles and residual waste gas (residual gas) placed in the sterilization device; the exhaust gas collecting and processing device is connected with the sterilizing device and is used for collecting the waste gas (polluted gas) discharged by the sterilizing device, and a second heating device is arranged in the exhaust gas collecting and processing device and is used for carrying out high-temperature sterilization on the waste gas; and the waste gas after sterilization in the sterilization device and the exhaust collection processing device is respectively introduced into the condensed water processing device for cooling and then is discharged into the atmosphere, so that the safe exhaust process without biological pollution leakage is realized.
As the preferred embodiment, the sterilization device adopts a cylindrical sterilization cabin 2, a support frame is arranged in the sterilization device and used for placing contaminated articles, a sealing door structure is arranged at the top of the sterilization device, an exhaust port I, an air inlet I and a water inlet I are arranged on the side wall of the sterilization device, and a water outlet I is arranged at the bottom of the sterilization device.
As a preferred embodiment, the exhaust gas collection and treatment device adopts a cylindrical inner exhaust cabin 13, the top of the inner exhaust cabin is provided with a steam outlet, the bottom of the inner exhaust cabin is provided with a water outlet II, and the side wall of the inner exhaust cabin is provided with a water inlet II, an exhaust port II and an air inlet II; the outside of the air inlet II is connected with one end of a polluted exhaust pipeline 9, the other end of the polluted exhaust pipeline 9 is connected with an exhaust port I, and polluted waste gas in the sterilization device is exhausted into an exhaust collecting and processing device through the polluted exhaust pipeline 9; a pollution exhaust valve 10 is arranged on the pollution exhaust pipeline 9; the bottoms of the exhaust gas collection treatment device and the sterilization device are jointly connected with a drainage pipeline 6, wherein the drainage pipeline 6 is provided with two branches, each branch is respectively connected with a drainage outlet II and a drainage outlet I, and an inner drainage cabin drainage valve 12 and a sterilization cabin drainage valve 5 are respectively arranged on the two branches; liquid level switches are arranged in the exhaust gas collecting and processing device and the sterilizing device.
In a preferred embodiment, the condensed water treatment device comprises a waste water tank 14 and an exhaust pipeline 8 connected with the waste water tank 14, cooling water is contained in the waste water tank 14, the exhaust pipeline 8 is provided with two branch pipelines, a first branch pipeline is connected with an exhaust port II, a second branch pipeline is connected with a polluted exhaust pipeline 9, and an inner exhaust cabin exhaust valve 11 and a sterilization cabin exhaust valve 7 are respectively arranged on the first branch pipeline and the second branch pipeline and are used for introducing sterilized exhaust gas in the sterilization device and the exhaust gas collection and treatment device into the waste water tank 14 through the exhaust pipeline 8 for cooling and then exhausting the sterilized exhaust gas into the atmosphere.
As a preferred embodiment, the first heating device and the second heating device both adopt heating pipes, namely a first heating pipe and a second heating pipe, which are respectively used for heating external water introduced into the sterilization device and the exhaust gas collection and treatment device to generate high-temperature and high-pressure water vapor; the external water is provided through a water inlet pipeline 4, the water inlet pipeline 4 is provided with two branch pipelines which are respectively connected with the air inlet I and the water inlet II, and the external water is introduced into the sterilization device and the exhaust gas collection and treatment device; the two branch pipelines are respectively provided with a water inlet valve 3 of the sterilization cabin and a water inlet valve 15 of the inner discharge cabin for controlling the water inflow; the heating power of the second heating pipe is larger than that of the first heating pipe.
As a preferred embodiment, the sterilization device further comprises an air supplement device, which is composed of a steam feedback pipeline 18 and a steam feedback valve 19 arranged on the steam feedback pipeline 18, wherein one end of the steam feedback pipeline 18 is connected with a steam outlet, and the other end of the steam feedback pipeline is connected with the air inlet I, and is used for introducing high-temperature steam generated by heating of the second heating device into the sterilization device, supplementing steam for the sterilization device, and assisting the sterilization device in temperature and pressure rise.
As a preferred embodiment, a safety valve 1 of the sterilization chamber and a pressure gauge 20 of the sterilization chamber are arranged on the side wall of the sterilization device; the side wall of the exhaust gas collecting and processing device is provided with an inner exhaust chamber safety valve 16 and an inner exhaust chamber pressure gauge 17.
In a preferred embodiment, a structural design mode with higher pressure bearing capacity is required according to the high-pressure design requirement of the exhaust gas collection and treatment device, and Q245R, SUS304, SUS316L or SUS316Ti materials are recommended in terms of materials. The condition that the heating efficiency is influenced by corrosion, scaling and the like generated after the inner row of cabins 13 works for a long time is avoided.
The invention also discloses a working method of the sterilizer exhaust treatment device with biological emission safety, which comprises the following steps:
step 1, firstly putting a polluted article on a support frame of a sterilization cabin 2, closing a sealing door, opening a water inlet valve 3 of the sterilization cabin and a water inlet valve 15 of an inner drainage cabin, installing liquid level switches in the sterilization cabin 2 and the inner drainage cabin 13, respectively introducing external water into the sterilization cabin 2 and the inner drainage cabin 13 through a water inlet pipeline 4, closing the water inlet valve 3 of the sterilization cabin and the water inlet valve 15 of the inner drainage cabin when the liquid level switches in the sterilization cabin 2 and the inner drainage cabin 13 are triggered, stopping introducing the external water, and enabling the liquid level of the external water introduced into the sterilization cabin 2 to be lower than the height of the polluted article;
step 2, a first heating pipe is arranged in the sterilization cabin 2, at the moment, the first heating pipe starts to heat, the pollution exhaust valve 10 is opened, and polluted waste gas in the sterilization cabin 2 is conveyed into the inner exhaust cabin 13 through the pollution exhaust pipeline 9 under the action of pressure; through data calculation and measurement, the volume of the inner row cabin 13 is determined to be not less than 2/3 of the volume of the sterilization cabin 2, and the internal pressure of the inner row cabin 13 can be ensured to be less than the internal pressure of the sterilization cabin 2 in the exhaust stage; in addition, the upper limit of the liquid level in the sterilization cabin 2 is designed to be lower than the position of the exhaust port I, so that only exhaust is ensured in the exhaust stage, and water is not discharged;
step 3, after the air exhaust in the sterilization chamber 2 is finished, closing the pollution exhaust valve 10 (the time for closing the exhaust valve 10 is controlled by a program, the program confirms the stage of the sterilization chamber 2 according to the pressure and the temperature in the sterilization chamber 2, and after the air exhaust stage is switched to the temperature rise stage, the exhaust valve 10 is closed), and after the exhaust valve 10 is closed, a second heating pipe arranged in the inner exhaust chamber 13 also starts to work;
step 4, after the pressure in the inner exhaust cabin (13) rises to a set pressure (high-pressure steam is generated after heating to enable the internal pressure to rise), the value of the pressure is larger than the pressure in the sterilization cabin (2), a steam feedback valve (19) is opened, and the high-temperature high-pressure steam generated in the inner exhaust cabin (13) returns to the sterilization cabin (2) through a steam feedback pipeline (18) to supplement air;
step 5, when the sterilization is started in the sterilization cabin (2), the steam feedback valve (19) is closed, and the pressure in the inner exhaust cabin (13) is continuously increased to the set pressure; sterilizing the polluted gas in the inner exhaust cabin (13);
step 6, sterilizing the inner exhaust cabin (13) for a time shorter than that of the sterilizing cabin (2) (the heating power of the second heating pipe is high, and the inner exhaust cabin 13 is provided with a heat insulation layer, so that the sterilizing time is shorter), after the sterilization of the inner exhaust cabin (13) is finished, opening an exhaust valve (11) of the inner exhaust cabin, discharging sterilized waste gas into a waste water tank, cooling and then discharging the waste gas into the atmosphere;
step 7, after the sterilization in the sterilization chamber (2) is finished, opening an exhaust valve (7) of the sterilization chamber, discharging sterilized waste gas into a waste water tank, cooling and then discharging the waste gas into the atmosphere;
step 8, after the sterilization cabin (2) and the inner exhaust cabin (13) are exhausted, closing (7) an exhaust valve of the sterilization cabin and an exhaust valve (11) of the inner exhaust cabin;
in the working process, the safety of the inner discharging cabin 13 and the safety of the sterilizing cabin 2 are respectively ensured through the inner discharging cabin safety valve 16 and the sterilizing cabin safety valve 1; and the pressure values in the inner exhaust chamber 13 and the sterilization chamber 2 are displayed in real time through the inner exhaust chamber pressure gauge 17 and the sterilization chamber pressure gauge 20. When the pressure in the two cabins is larger than the pressure bearing value, the safety valve is started to discharge the pressure.
The exhaust gas before sterilization in the sterilization cabin 2 is polluted gas, the gas is completely received by the inner exhaust cabin 13, no exhaust equipment is exhausted, and meanwhile, the polluted air exhausted into the inner exhaust cabin 13 is thoroughly sterilized in a high-temperature and high-pressure mode of the inner exhaust cabin 13, so that the safety is ensured.
In a preferred embodiment, the designed pressure value of the pressure of the inner discharge cabin 13 is higher than that of the pressure of the sterilization cabin 2; and a heat insulation layer is arranged outside the inner row of cabins 13.
The invention generally comprises a sterilization cabin, an inner exhaust cabin, a sterilization cabin exhaust pipeline, an inner exhaust cabin air supply pipeline, an air supply pipeline, a sterilization cabin drainage pipeline, an inner exhaust cabin drainage pipeline, a waste water tank, an inner exhaust cabin heat insulation layer, a sterilization cabin safety valve and pressure gauge, and an inner exhaust cabin safety valve and pressure gauge. The sterilization cabin is connected with the exhaust pipe through a sterilization cabin exhaust pipeline and an inner exhaust cabin air supply pipeline, the sterilization cabin and the inner exhaust cabin are respectively provided with an independent water discharge pipeline, and the exhaust pipeline after sterilization of the sterilization cabin and the exhaust pipeline after sterilization of the inner exhaust cabin are respectively discharged to the atmosphere through a waste water tank. The designed pressure value of the pressure of the inner discharge cabin is higher than the designed pressure value of the sterilization cabin.
The invention has the following basic operation processes and principles: the sterilization cabin heats up and steps up the in-process and exhausts, keeps atmospheric pressure in the interior row cabin, when the sterilization cabin opened the exhaust, because the pressure was greater than interior row cabin in the sterilization cabin for the exhaust process can normally go on, after the exhaust was accomplished, closed discharge valve, interior row cabin also began to heat up and steps up, and pressure is higher than the sterilization cabin, and gives the sterilization cabin supplementary steam through return line, assists the sterilization cabin to heat up and step up. When the temperature in the sterilization cabin reaches the standard and the sterilization stage is started, the inner row cabin also starts the sterilization process with higher temperature, the sterilization time is shorter than the sterilization cabin time, after the sterilization of the inner row cabin is finished, sterile exhaust is carried out, and the residual gas after the sterilization is finished is cooled by a waste water tank and then is discharged into the atmosphere. And the sterilization cabin also finishes sterilization work subsequently, executes the same exhaust process, and realizes the safe exhaust process without biological pollution leakage.
The invention designs a processing structure and a control mode which are specially used for processing the exhaust gas before sterilization of a sterilizer, and adopts the basic principle that the exhausted polluted gas is subjected to high-temperature high-pressure sterilization processing. Exhaust treatment devices of other principles are not within the scope of the present invention. The mode of collecting and processing the gas in the inner exhaust cabin disclosed by the patent of the invention has no material consumption and can be operated for a long time, thereby reducing the product maintenance period of a user, reducing the unnecessary labor capacity of the user and improving the customer satisfaction. The invention can also be applied to special environments which are used in college laboratories, biosafety laboratories above grade 3, vaccine production enterprises and the like and have biosafety requirements on sterilization and exhaust. Can also be independently applied to the places of aseptic ventilation and treatment in the closed environment.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A sterilizer exhaust gas treatment device with bio-emission safety, comprising: the device comprises a sterilization device, an exhaust gas collection and treatment device and a condensed water treatment device, wherein a first heating device is arranged in the sterilization device and is used for carrying out high-temperature sterilization on polluted articles and residual waste gas in the sterilization device; the exhaust gas collecting and processing device is connected with the sterilizing device and is used for collecting the waste gas discharged by the sterilizing device, and a second heating device is arranged in the exhaust gas collecting and processing device and is used for carrying out high-temperature sterilization on the waste gas; and the waste gas after sterilization in the sterilization device and the exhaust collection processing device is respectively introduced into the condensed water processing device for cooling and then is discharged into the atmosphere, so that the safe exhaust process without biological pollution leakage is realized.
2. The sterilizer exhaust gas treatment device with biological discharge safety according to claim 1, wherein the sterilizer employs a sterilization chamber (2) having a support frame therein for holding contaminated articles, a sealing door structure at the top, an exhaust port i, an air inlet i and a water inlet i at the side wall, and a water outlet i at the bottom.
3. The sterilizer exhaust gas treatment device with biological discharge safety according to claim 2, wherein the exhaust gas collection treatment device adopts an inner discharge chamber (13), the top of the inner discharge chamber is provided with a steam outlet, the bottom of the inner discharge chamber is provided with a water outlet II, and the side wall of the inner discharge chamber is provided with a water inlet II, an exhaust port II and an air inlet II;
the outside of the air inlet II is connected with one end of a polluted exhaust pipeline (9), the other end of the polluted exhaust pipeline (9) is connected with the air outlet I, and polluted waste gas in the sterilization device is exhausted into an exhaust collecting and processing device through the polluted exhaust pipeline (9); a pollution exhaust valve (10) is arranged on the pollution exhaust pipeline (9);
the bottoms of the exhaust gas collection treatment device and the sterilization device are jointly connected with a drainage pipeline (6), wherein the drainage pipeline (6) is provided with two branches, each branch is respectively connected with a drainage outlet II and a drainage outlet I, and an inner drainage cabin drainage valve (12) and a sterilization cabin drainage valve (5) are respectively arranged on the two branches; liquid level switches are arranged in the exhaust gas collecting and processing device and the sterilizing device.
4. The sterilizer exhaust gas treatment device with biological discharge safety according to claim 3, wherein the condensate water treatment device comprises a waste water tank (14) and an exhaust pipeline (8) connected with the waste water tank (14), the waste water tank (14) is filled with cooling water, the exhaust pipeline (8) is provided with two branch pipelines, a first branch pipeline is connected with the exhaust port II, a second branch pipeline is connected with the polluted exhaust pipeline (9), and the first branch pipeline and the second branch pipeline are respectively provided with an inner exhaust cabin exhaust valve (11) and a sterilization cabin exhaust valve (7) for respectively introducing sterilized exhaust gas in the sterilization device and the exhaust gas collection treatment device into the waste water tank (14) through the exhaust pipeline (8) for cooling and then exhausting into the atmosphere.
5. The sterilizer exhaust gas treatment device with biological emission safety according to claim 3, wherein the first heating device and the second heating device both adopt heating pipes, namely a first heating pipe and a second heating pipe, which respectively heat outside water introduced into the interior of the sterilizer and the exhaust gas collection treatment device to generate high-temperature and high-pressure water vapor; the external water is provided through a water inlet pipeline (4), the water inlet pipeline (4) is provided with two branch pipelines which are respectively connected with the air inlet I and the water inlet II, and the external water is introduced into the sterilization device and the exhaust gas collection and treatment device;
the two branch pipelines are respectively provided with a water inlet valve (3) of the sterilization cabin and a water inlet valve (15) of the inner discharge cabin;
the heating power of the second heating pipe is larger than that of the first heating pipe.
6. The sterilizer exhaust gas treatment device with bio-emission safety according to claim 5, further comprising an air supply device, which is composed of a steam feedback pipeline (18) and a steam feedback valve (19) arranged on the steam feedback pipeline (18), wherein one end of the steam feedback pipeline (18) is connected with the steam outlet, and the other end is connected with the air inlet I, and is used for introducing high-temperature steam generated by heating of the second heating device into the sterilization device, supplying steam to the sterilization device, and assisting the sterilization device in raising temperature and boosting pressure.
7. The sterilizer exhaust gas treatment device with biological emission safety according to claim 1, wherein the side wall of the sterilizer is provided with a sterilization chamber safety valve (1) and a sterilization chamber pressure gauge (20); the side wall of the exhaust gas collecting and processing device is provided with an inner exhaust chamber safety valve (16) and an inner exhaust chamber pressure gauge (17).
8. The sterilizer exhaust gas treatment device with bio-emission safety according to claim 1, wherein the material of the exhaust gas collection treatment device is Q245R, SUS304, SUS316L or SUS316 Ti.
9. A method of operating a sterilizer exhaust gas treatment device with biological emission safety as claimed in any one of claims 1 to 8, comprising the steps of:
step 1, firstly putting a polluted article on a support frame of a sterilization cabin (2), closing a sealing door, opening a water inlet valve (3) of the sterilization cabin and a water inlet valve (15) of an inner drainage cabin, installing liquid level switches in the sterilization cabin (2) and the inner drainage cabin (13), respectively introducing external water into the sterilization cabin (2) and the inner drainage cabin (13) through a water inlet pipeline (4), and closing the water inlet valve (3) of the sterilization cabin and the water inlet valve (15) of the inner drainage cabin when the liquid level switches in the sterilization cabin (2) and the inner drainage cabin (13) are triggered to stop introducing the external water;
step 2, a first heating pipe is arranged in the sterilization cabin (2), at the moment, the first heating pipe starts to heat, the pollution exhaust valve (10) is opened, and polluted waste gas in the sterilization cabin (2) is conveyed into the inner exhaust cabin (13) through the pollution exhaust pipeline (9) under the pressure action;
step 3, after the air exhaust in the sterilization cabin (2) is finished, closing the pollution exhaust valve (10), and starting the second heating pipe arranged in the inner exhaust cabin (13);
step 4, after the pressure in the inner exhaust cabin (13) rises to the set pressure, the value of the pressure is larger than the pressure in the sterilization cabin (2), a steam feedback valve (19) is opened, and the high-temperature and high-pressure steam generated in the inner exhaust cabin (13) returns to the sterilization cabin (2) through a steam feedback pipeline (18) to supplement air;
step 5, when the sterilization is started in the sterilization cabin (2), the steam feedback valve (19) is closed, and the pressure in the inner exhaust cabin (13) is continuously increased to the set pressure; sterilizing the polluted gas in the inner exhaust cabin (13);
step 6, sterilizing the inner exhaust cabin (13) for a time shorter than that of the sterilizing cabin (2), opening an exhaust valve (11) of the inner exhaust cabin after the sterilization of the inner exhaust cabin (13) is finished, and discharging sterilized waste gas into a waste water tank for cooling and then discharging into the atmosphere;
step 7, after the sterilization in the sterilization chamber (2) is finished, opening an exhaust valve (7) of the sterilization chamber, discharging sterilized waste gas into a waste water tank, cooling and then discharging the waste gas into the atmosphere;
step 8, after the sterilization cabin (2) and the inner exhaust cabin (13) are exhausted, closing (7) an exhaust valve of the sterilization cabin and an exhaust valve (11) of the inner exhaust cabin;
in the working process, the safety of the inner row cabin (13) and the safety of the sterilization cabin (2) are respectively ensured through the safety valve (16) of the inner row cabin and the safety valve (1) of the sterilization cabin; and the pressure values in the inner exhaust chamber (13) and the sterilization chamber (2) are displayed in real time through the inner exhaust chamber pressure gauge (17) and the sterilization chamber pressure gauge (20).
10. The operating method of a sterilizer exhaust gas treatment device with biological emission safety according to claim 9, wherein the designed pressure value of the pressure of the inner exhaust chamber (13) is higher than the designed pressure value of the pressure of the sterilization chamber (2); and a heat insulation layer is arranged outside the inner row cabin (13).
CN202110959326.7A 2021-08-20 2021-08-20 Sterilizer exhaust treatment device with biological emission safety and working method thereof Active CN113633792B (en)

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GB1088953A (en) * 1963-05-23 1967-10-25 Dent & Hellyer An improved sterilising autoclave
US4781898A (en) * 1987-05-01 1988-11-01 Pelton And Crane Company Autoclave vent
JPH06190024A (en) * 1992-12-22 1994-07-12 Nippon Metal Ind Co Ltd Method and apparatus for high-pressure steam sterilization
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