CN116928778A - Biological safety laboratory new trend system - Google Patents
Biological safety laboratory new trend system Download PDFInfo
- Publication number
- CN116928778A CN116928778A CN202311181538.2A CN202311181538A CN116928778A CN 116928778 A CN116928778 A CN 116928778A CN 202311181538 A CN202311181538 A CN 202311181538A CN 116928778 A CN116928778 A CN 116928778A
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- Prior art keywords
- air
- pipeline
- inlet
- fresh air
- gas diffusion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000443 aerosol Substances 0.000 claims abstract description 42
- 238000009792 diffusion process Methods 0.000 claims abstract description 37
- 238000000746 purification Methods 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 19
- 238000005507 spraying Methods 0.000 claims description 18
- 238000005192 partition Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 2
- 230000007423 decrease Effects 0.000 claims 1
- 238000004659 sterilization and disinfection Methods 0.000 abstract description 44
- 241000894006 Bacteria Species 0.000 abstract description 20
- 241000700605 Viruses Species 0.000 abstract description 20
- 239000003595 mist Substances 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 12
- 239000000126 substance Substances 0.000 abstract description 11
- 239000007789 gas Substances 0.000 description 31
- 239000000645 desinfectant Substances 0.000 description 24
- 238000002474 experimental method Methods 0.000 description 11
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000006378 damage Effects 0.000 description 6
- 244000005700 microbiome Species 0.000 description 6
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- 230000001954 sterilising effect Effects 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000003206 sterilizing agent Substances 0.000 description 2
- 239000002341 toxic gas Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 210000000170 cell membrane Anatomy 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/007—Ventilation with forced flow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/003—Ventilation in combination with air cleaning
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
- F24F8/24—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using sterilising media
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
The utility model discloses a fresh air system of a biosafety laboratory, which comprises an air inlet pipeline, an air outlet pipeline, a control system, a gas diffusion chamber and an aerosol sprayer, wherein the air inlet pipeline is provided with an air inlet, the air inlet is positioned in the biosafety laboratory, the air outlet pipeline is provided with an air outlet, the gas diffusion chamber is provided with an inlet and an outlet, the inlet is positioned in the biosafety laboratory, and the outlet is communicated with the air outlet; the aerosol sprayer is communicated with the gas diffusion chamber through a pipeline, an exhaust fan is arranged at the outlet, and the aerosol sprayer and the exhaust fan are electrically connected with the control system. The air diffusion chamber is arranged to slow down and diffuse the air in the extracted laboratory, aerosol mist is formed through the aerosol sprayer, and the aerosol mist is fully contacted with bacteria and viruses in the air, so that the disinfection effect is good, the emission of harmful substances is reduced, and the atmospheric environment quality is improved; and the fresh air system disinfection mode is carried out along with the test, so that the fresh air system disinfection mode is better than a physical disinfection effect, is more convenient and quicker than a chemical disinfection mode, and is time-saving and labor-saving.
Description
Technical Field
The utility model relates to the technical field of ventilation of biological laboratories, in particular to a fresh air system of a biological safety laboratory.
Background
The biosafety laboratory, i.e., the biological laboratory, is the site for performing biological experiments. In the biological experiment process, a large amount of bacteria, viruses and the like can pollute indoor air, and if the air is discharged without treatment, the air can seriously pollute the external environment, and meanwhile, the next biological experiment can be influenced. Therefore, the ventilation system of the laboratory generally has the requirement of disinfection, and the laboratory is also in a constant-temperature and low-humidity environment, so that the activity of microorganisms such as bacteria, viruses and the like is ensured, the biological experiment is conveniently carried out, the adhesion of the microorganisms in the air in the laboratory and on equipment and equipment is reduced, and the environmental pollution is reduced.
In the prior art, a physical disinfection method and a chemical disinfection method are adopted for disinfection of a biological laboratory; the physical disinfection method is to destroy DNA, RNA or protein of bacteria, virus and other microorganisms by adopting physical means such as plasma beam, ultraviolet rays and the like, so as to inactivate the bacteria, the virus and other microorganisms and achieve the aim of disinfection; the chemical disinfection method is to destroy the cell membrane of bacteria and viruses and other tissue structures by spraying ozone, hydrogen peroxide, chlorine-containing disinfectant and other chemical agents, so as to sterilize and disinfect the air in a laboratory.
On the one hand, in order to avoid influencing each sample in a laboratory, the physical disinfection method is generally applied to an exhaust duct of a ventilation system, and the exhaust system is used for exhausting indoor polluted air and disinfecting the exhausted toxic gas; however, the sterilizing effect is poor, and the discharged gas is usually discharged with a large amount of viruses and bacteria mixed therein.
On the other hand, the chemical disinfection method has better effect, and is generally characterized in that after an experimenter leaves a laboratory, a disinfection reagent is sprayed indoors, and after the laboratory stands for a period of time, bacteria and viruses are inactivated, the disinfection reagent is pumped away through a ventilation system, so that the experimenter is prevented from being injured; however, the method is that the concentration of pollution in the laboratory meets the specified requirement, and the indoor disinfection is realized by using rest or working hours, or when the pollution of the current experiment can affect the next time, the current experiment is directly disinfected after the current experiment is finished, so that the time and the labor are wasted, the front and back sequences are orderly arranged according to the specific experiment content, and the influence among the two is reduced, so that the disinfection times are reduced; and bacteria and viruses in the ventilating duct are difficult to eradicate, and can be diffused to outdoor polluted atmosphere, if the bacteria and viruses are killed after working, the ventilating system does not operate, and toxic gas in the ventilating duct is easy to flow back. The Chinese patent application with the bulletin number of CN207880986U and 2 nd 2018 discloses an automatic ozone disinfection system for a biosafety laboratory, wherein an ozone generator is arranged in or arranged outside an air conditioning unit, when the air conditioning unit is opened for blowing, ozone can be intensively fed into the room for circular disinfection, the cleanness of the whole laboratory environment is ensured, disinfection equipment is not required, a disinfection mode is opened at any time, and the indoor disinfection is convenient and labor-saving; the utility model patent of China, whose application publication number is CN112957500A,2021, 4 months and 2 days, provides a hydrogen peroxide steam large system disinfection system for high-grade biosafety laboratory, which is provided with a hydrogen peroxide steam generator, and forms a relatively closed circulation system with an exhaust branch pipe, an exhaust fan group, an air supply branch pipe and a room chamber, so that indoor circulation disinfection is realized, and the system is simple and convenient; however, the two modes need to be separated from each other, so that the influence of the experiment sequence is avoided, and if the residual amount of ozone, hydrogen peroxide and the like in a laboratory is large, not only the sample detached during the experiment can be destroyed, but also the human body can be injured.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provides a fresh air system for a biosafety laboratory. The utility model sets the gas diffusion chamber to slow down and diffuse the air velocity in the laboratory, forms aerosol fog through the aerosol sprayer, sprays the disinfectant into the gas diffusion chamber to mix with air, can fully contact with bacteria and viruses in the air, disinfects, achieves good disinfection effect, reduces the emission of harmful substances, and improves the atmospheric environment quality.
The technical scheme adopted for solving the technical problems is as follows: the fresh air system of the biosafety laboratory comprises an air inlet pipeline, an air outlet pipeline and a control system, wherein the air inlet pipeline is provided with an air inlet, the air inlet is positioned in the biosafety laboratory, the air outlet pipeline is provided with an air outlet, the fresh air system also comprises a gas diffusion chamber and an aerosol sprayer, an inlet and an outlet are arranged on the gas diffusion chamber, the inlet is positioned in the biosafety laboratory, and the outlet is communicated with the air outlet; the aerosol sprayer is communicated with the gas diffusion chamber through a pipeline, the inlet is provided with an exhaust fan, and the aerosol sprayer and the exhaust fan are electrically connected with the control system.
Preferably, a buffer is arranged in the inlet, the buffer comprises an outer shell, and a plurality of wave plates arranged along the gas flow direction are arranged in the outer shell.
Preferably, the inlet is positioned in the middle of one side of the outer shell; the length of the plurality of wave plates arranged in the outer housing is sequentially reduced from the middle to the two sides.
Preferably, the gas diffusion chamber comprises a deep purification chamber and a primary purification chamber which are separated up and down by a partition plate, and an opening for communicating the primary purification chamber and the deep purification chamber is arranged on the partition plate.
Preferably, the primary purifying chamber is flat, a spraying plate is arranged in the primary purifying chamber, and the aerosol sprayer is communicated with the spraying plate through a pipeline.
Preferably, the upper side and the lower side of the deep purification chamber are alternately provided with baffle plates, the baffle plates comprise baffle plates with semicircular sections, and the baffle plates are provided with nozzles at the two sides; an auxiliary liquid sprayer is arranged in a cavity surrounded by the baffle plate, and the auxiliary liquid sprayer is communicated with the aerosol sprayer through a pipeline.
Preferably, the auxiliary liquid sprayer comprises a core tube and a sleeve, wherein the core tube is positioned in the sleeve, and two ends of the core tube are in sealed rotary connection with the sleeve; the sleeve is provided with a sieve mesh, the core tube is provided with a liquid spraying port, and the liquid spraying port is aligned with the nozzle.
Preferably, a plurality of wing plates are circumferentially arranged on the outer side surface of the sleeve.
Preferably, a rotating plate is arranged in the nozzle of the baffle, one end of the rotating plate is rotationally connected with the baffle, and the other end of the rotating plate is connected with a driver.
Preferably, the inner surfaces of the gas diffusion chamber and the exhaust pipeline are respectively provided with a waterproof film.
Compared with the prior art, the utility model has the advantages and positive effects that:
(1) The air diffusion chamber is arranged to slow down and diffuse the air in the extracted laboratory, aerosol mist is formed through the aerosol sprayer, the disinfectant is sprayed into the air diffusion chamber to be mixed with the air, the aerosol mist moves along with the air flow but has long existence time, and the disinfectant can be fully contacted and disinfected with bacteria and viruses in the air, so that the disinfectant has a good disinfection effect and reduces the harm to the atmosphere environment; and the mixed gas flows out along with the exhaust pipeline, and the disinfectant in the exhaust pipeline continuously reacts with harmful microorganisms such as bacteria and viruses in the air, so that the emission of harmful substances is further reduced, and the quality of the atmospheric environment is improved.
(2) The fresh air system disinfection mode is carried out along with the test, so that the fresh air system disinfection mode is better than the physical disinfection mode, is more convenient and quicker than the chemical disinfection mode, and is time-saving and labor-saving.
(3) The test personnel do not need to be isolated, after the test is carried out, harmful air is immediately pumped away, and the disinfectant is also discharged on the exhaust pipe, so that the disinfectant cannot flow back into a room, the injury to the test personnel is reduced, the sample disassembled during the test is protected, and the injury of the disinfectant to a human body is reduced.
(4) Air enters the shell from the middle position on one side of the outer shell, is slowed down through a plurality of wave plate layers arranged in the outer shell, slowly and synchronously enters the effect in the gas diffusion chamber, simultaneously ensures the certain speed of air on two sides, ensures the smooth circulation of air, reduces the interaction interference, reduces the loss, and improves the mixing of the aerosol and the disinfectant in the gas diffusion chamber.
(5) The gas diffusion chamber comprises a deep purifying chamber and a primary purifying chamber which are separated up and down through a partition board, and is used for secondary treatment of air, so that the mixing degree and the disinfection effect are improved.
(6) The primary purifying chamber is flat, and the disinfectant is primarily mixed with air through the spraying plate, so that a large amount of formed aerosol mist is contacted with bacteria and viruses, and the aerosol mist is deactivated, so that the aim of disinfection is fulfilled.
(7) The air in the deep purification room flows in a zigzag way between the staggered baffles, aerosol mist generated by the aerosol sprayer enters the auxiliary sprayer and is sprayed into the air from the nozzle, and the air further contacts bacteria, viruses and the like, so that the air is purified, and the atmospheric pollution is reduced.
(8) The disinfectant in the core tube is sprayed out from the sieve holes on the sleeve through the liquid spraying holes, the disinfectant is thrown out from the nozzle through the rotation of the sleeve, and the air in the deep purification chamber is moved forwards through the wing plate to ensure that the disinfection force is increased and the air circulation speed is improved, so that the air is prevented from being blocked in a tortuous channel generated by a baffle.
(9) Through being equipped with the commentaries on classics board in the spout, according to different experiments or test intensity, open or close the commentaries on classics board of different quantity, carry out the second grade of different degree and kill, reduce the excessive use of disinfectant when guaranteeing the disinfection effect, practice thrift the cost, reduce its volatilization time of discharging into the atmosphere.
(10) The inner surfaces of the gas diffusion chamber and the exhaust pipeline are provided with waterproof films, so that corrosion of disinfectant to the gas diffusion chamber and the exhaust pipeline is reduced.
Drawings
FIG. 1 is a side partial cross-sectional view of the present utility model;
FIG. 2 is a cross-sectional view of a bumper;
FIG. 3 is an enlarged view of FIG. 1 at A;
FIG. 4 is an enlarged view of a portion of FIG. 3;
FIG. 5 is a schematic perspective view of a spacer;
fig. 6 is a schematic perspective view of a shower plate.
Reference numerals illustrate:
1-an air inlet pipeline and 11-an air inlet;
2-exhaust pipeline, 21-exhaust port;
3-gas diffusion chamber, 31-inlet, 32-outlet, 33-baffle, 34-opening, 35-primary purification chamber, 36-deep purification chamber;
4-aerosol sprayer;
5-buffer, 51-outer shell, 52-wave plate;
6-spraying a plate;
7-baffle, 71-baffle, 72-cavity, 73-spout, 74-rotating plate, 75-driver;
8-auxiliary liquid spraying devices, 81-core tubes, 82-liquid spraying ports, 83-sleeves, 84-sieve holes and 85-wing plates;
9-exhaust fan.
Detailed Description
In order to make the technical solution of the present utility model better understood by those skilled in the art, the technical solution of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments.
Examples
The utility model is further described below with reference to fig. 1-6, and a fresh air system for a biosafety laboratory, as shown in fig. 1, includes an air inlet pipeline 1, an air outlet pipeline 2 and a control system, wherein the air outlet pipeline 2 is provided with an air outlet 21, the air inlet pipeline 1 is provided with an air inlet 11, the air inlet 11 is positioned in the biosafety laboratory, and air circulation in the biosafety laboratory is realized through the air inlet pipeline 1 and the air outlet pipeline 2.
As shown in fig. 1, the fresh air system further comprises a gas diffusion chamber 3 and an aerosol sprayer 4, wherein an inlet 31 and an outlet 32 are arranged on the gas diffusion chamber 3, the inlet 31 is positioned in the biological laboratory, and the outlet 32 is communicated with the air outlet 21; the aerosol sprayer 4 is communicated with the gas diffusion chamber 3 through a pipeline, an exhaust fan 9 is arranged at an inlet 31, and the aerosol sprayer 4 and the exhaust fan 9 are electrically connected with a control system.
Air in the biosafety laboratory is slowly diffused from the air in the gas diffusion chamber 3 through the inlet 31, and the aerosol sprayer 4 sprays disinfectant into the gas diffusion chamber 3 to be mixed with the air; the solution particles with extremely small particle size generated by the aerosol sprayer 4 are organized into a net in the gas diffusion chamber 3 to form aerosol mist which is filled in the gas diffusion chamber 3 and moves along with the air flow but has long existence time, and the aerosol mist can be fully contacted and disinfected with bacteria and viruses in the air, has good disinfection effect and reduces the harm to the atmosphere environment; the mixed gas slowly flows to the outlet 32 and flows out along with the exhaust pipeline 2, and the disinfectant in the exhaust pipeline 2 continuously reacts with harmful microorganisms such as bacteria and viruses in the air, so that the emission of harmful substances is further reduced, and the quality of the atmospheric environment is improved.
Meanwhile, the fresh air system disinfection mode is carried out along with the test, so that the fresh air system disinfection mode is better than a physical disinfection mode, is more convenient and faster than a chemical disinfection mode, saves time and labor, does not need to be isolated by test staff, harmful air is immediately pumped away after the test is carried out, and disinfectant is also discharged on the exhaust pipeline 2 and cannot flow back indoors, so that the damage to the test staff is reduced, the sample detached during the test is protected, and the damage of the disinfectant to a human body is reduced.
As shown in fig. 1 and 2, the buffer 5 is provided in the inlet 31, and air in the biosafety laboratory is drawn from the inlet 31 into the outer case 51 of the buffer 5; the outer shell 51 of the buffer 5 is internally provided with a plurality of wave plates 52 arranged along the gas flow direction, the air is slowed down by the wave plates 52, the reaction time with aerosol mist generated by the aerosol sprayer 4 in the gas diffusion chamber 3 is prolonged, and the number of viruses and bacteria is reduced.
As shown in fig. 1 and 2, the inlet 31 is located in the middle of one side of the outer case 51; air pumped from the laboratory enters the shell from the middle position on one side of the outer shell 51, and continuously advances forwards and forwards on two sides; since the air entering the housing is located at the middle part of the impact force to be maximum and gradually reduced towards the two sides, the lengths of the plurality of wave plates 52 arranged in the outer housing 51 are sequentially reduced from the middle to the two sides, even if the resistance to the air in the middle part is maximum, the air gradually reduces towards the two sides, the effect of slowing down the air in the hierarchy and slowly and synchronously entering the gas diffusion chamber 3 is achieved, meanwhile, the certain speed of the air at the two sides is ensured, the smooth circulation of the air is ensured, the interaction obstruction is reduced, the loss is reduced, and the mixing with the disinfectant aerosol mist in the gas diffusion chamber 3 is improved.
As shown in fig. 1, the gas diffusion chamber 3 includes a deep purification chamber 36 and a primary purification chamber 35 which are partitioned up and down by a partition 33, and an opening 34 for communicating the primary purification chamber 35 and the deep purification chamber 36 is provided in the partition 33, and the secondary treatment of air increases the degree of mixing and the sterilization effect.
As shown in fig. 1, 3 and 6, the primary purifying chamber 35 is flat, a spraying plate 6 is arranged in the primary purifying chamber 35, the aerosol sprayer 4 is communicated with the spraying plate 6 through a pipeline, and the disinfectant is primarily mixed with air through the spraying plate 6, so that a large amount of formed aerosol mist is contacted with bacteria and viruses and deactivated, and the aim of disinfection is achieved.
As shown in fig. 1 and 3, the upper and lower sides of the deep purification chamber 36 are alternately provided with baffles 7, the baffles 7 comprise baffles 71 with semicircular sections, and air flows in a zigzag manner between the baffles 71; the baffle 71 is provided with nozzles 73 on two sides, an auxiliary liquid sprayer 8 is arranged in a cavity 72 surrounded by the baffle 71, and the auxiliary liquid sprayer 8 is communicated with the aerosol sprayer 4 through a pipeline. The aerosol mist generated by the aerosol sprayer 4 enters the auxiliary sprayer 8 and is sprayed into the air from the nozzle 73, and further contacts bacteria, viruses and the like to purify the air and reduce the atmospheric pollution.
As shown in fig. 1, 3 and 4, the auxiliary liquid sprayer 8 comprises a core tube 81 and a sleeve 83, wherein the core tube 81 is positioned in the sleeve 83, and two ends of the core tube 81 are in sealing and rotating connection with the sleeve 83; the sleeve 83 has a mesh 84 and the core tube 81 has a liquid spray port 82, the liquid spray port 82 being aligned with the spout 73.
As shown in fig. 4, a plurality of wings 85 are circumferentially arranged on the outer side surface of the sleeve 83, the sleeve 83 rotates to drive the wings 85 to rotate, the disinfectant in the core tube 81 is sprayed out from the sieve holes 84 on the sleeve 83 through the liquid spraying holes 82, the disinfectant is thrown out to the spray nozzles 73, and the wings 85 fan the air in the deep purification chamber 36 to move forwards, so that the disinfection force is increased, the air circulation speed is improved, and the air is prevented from being blocked in a tortuous channel generated by the baffle 7.
As shown in fig. 5, a rotary plate 74 is provided in the spout 73 of the baffle plate 71, and one end of the rotary plate 74 is rotatably connected to the baffle plate 71, and the other end is connected to a driver 75. According to different tests or test intensities, the drivers 75 are controlled to open or close different numbers of rotating plates 74, so that secondary sterilization is performed to different degrees, the sterilizing effect is ensured, the excessive use of the sterilizing agent is reduced, the cost is saved, and the volatilization time of the sterilizing agent discharged into the atmosphere is reduced.
The inner surfaces of the gas diffusion chamber 3 and the exhaust pipeline 2 are respectively provided with a waterproof film, so that corrosion of disinfectant to the gas diffusion chamber 3 and the exhaust pipeline 2 is reduced.
In the description of the present utility model, the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "vertical", "horizontal", etc. refer to the orientation or positional relationship based on that shown in the drawings, and are merely for the purpose of describing the present utility model and do not require that the present utility model must be constructed or operated in a specific orientation, and thus should not be construed as limiting the present utility model. "connected" and "connected" in the present utility model are to be understood broadly, and may be, for example, connected or detachably connected; the connection may be direct or indirect through intermediate members, and the specific meaning of the terms may be understood in detail by those skilled in the art.
The present utility model is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification and equivalent changes to the above-mentioned embodiments according to the technical substance of the present utility model are still within the protection scope of the technical solution of the present utility model.
Claims (9)
1. The fresh air system for the biosafety laboratory comprises an air inlet pipeline (1), an air outlet pipeline (2) and a control system, wherein the air inlet pipeline (1) is provided with an air inlet (11), the air inlet (11) is positioned in the biosafety laboratory, the air outlet pipeline (2) is provided with an air outlet (21), and the fresh air system is characterized by further comprising a gas diffusion chamber (3) and an aerosol sprayer (4), an inlet (31) and an outlet (32) are arranged on the gas diffusion chamber (3), the inlet (31) is positioned in the biosafety laboratory, and the outlet (32) is communicated with the air outlet (21);
the aerosol sprayer (4) is communicated with the gas diffusion chamber (3) through a pipeline, the inlet (31) is provided with an exhaust fan (9), and the aerosol sprayer (4) and the exhaust fan (9) are electrically connected with a control system;
the gas diffusion chamber (3) comprises a deep purification chamber (36) and a primary purification chamber (35) which are separated up and down through a partition plate (33), and an opening (34) used for communicating the primary purification chamber (35) and the deep purification chamber (36) is formed in the partition plate (33).
2. A biosafety laboratory fresh air system according to claim 1, characterized in that a buffer (5) is provided in the inlet (31), the buffer (5) comprising an outer housing (51), a plurality of wave plates (52) being provided in the outer housing (51) along the gas flow direction.
3. A biosafety laboratory fresh air system according to claim 2, wherein the inlet (31) is located in a middle portion of one side of the outer case (51); the length of the plurality of wave plates (52) arranged in the outer housing (51) decreases from the middle to the two sides in sequence.
4. The fresh air system for the biosafety laboratory of claim 1, wherein the primary purifying chamber (35) is flat, a spraying plate (6) is arranged in the primary purifying chamber (35), and the aerosol sprayer (4) is communicated with the spraying plate (6) through a pipeline.
5. The fresh air system for the biosafety laboratory according to claim 1, wherein the upper side and the lower side of the deep purification chamber (36) are provided with baffle plates (7) in a staggered manner, the baffle plates (7) comprise baffle plates (71) with semicircular sections, and the baffle plates (71) are provided with nozzles (73) on two sides;
an auxiliary liquid sprayer (8) is arranged in a cavity (72) surrounded by the baffle (71), and the auxiliary liquid sprayer (8) is communicated with the aerosol sprayer (4) through a pipeline.
6. A biosafety laboratory fresh air system according to claim 5, characterized in that the auxiliary liquid injector (8) comprises a core tube (81) and a sleeve (83), the core tube (81) is positioned in the sleeve (83), and two ends of the core tube (81) are connected with the sleeve (83) in a sealing and rotating manner;
the sleeve (83) is provided with a sieve mesh (84), the core tube (81) is provided with a liquid spraying opening (82), and the liquid spraying opening (82) is aligned with the nozzle (73).
7. A biosafety laboratory fresh air system according to claim 6, characterized in that the sleeve (83) is provided with a plurality of wings (85) circumferentially on the outer side.
8. The biosafety laboratory fresh air system according to claim 6, wherein a rotating plate (74) is arranged in a nozzle (73) of the baffle plate (71), one end of the rotating plate (74) is rotatably connected with the baffle plate (71), and the other end of the rotating plate is connected with a driver (75).
9. The biosafety laboratory fresh air system according to claim 1, wherein the inner surfaces of the gas diffusion chamber (3) and the exhaust pipeline (2) are provided with waterproof films.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311181538.2A CN116928778B (en) | 2023-09-14 | 2023-09-14 | Biological safety laboratory new trend system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311181538.2A CN116928778B (en) | 2023-09-14 | 2023-09-14 | Biological safety laboratory new trend system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116928778A true CN116928778A (en) | 2023-10-24 |
| CN116928778B CN116928778B (en) | 2023-11-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311181538.2A Active CN116928778B (en) | 2023-09-14 | 2023-09-14 | Biological safety laboratory new trend system |
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| Country | Link |
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| CN (1) | CN116928778B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116928778B (en) | 2023-11-17 |
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