CN110145823B - Scanning type efficient purifying return air gas collecting device - Google Patents
Scanning type efficient purifying return air gas collecting device Download PDFInfo
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- CN110145823B CN110145823B CN201910534951.XA CN201910534951A CN110145823B CN 110145823 B CN110145823 B CN 110145823B CN 201910534951 A CN201910534951 A CN 201910534951A CN 110145823 B CN110145823 B CN 110145823B
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- 238000007789 sealing Methods 0.000 claims abstract description 19
- 238000003825 pressing Methods 0.000 claims abstract description 11
- 230000000737 periodic effect Effects 0.000 claims abstract description 5
- 238000012544 monitoring process Methods 0.000 claims description 18
- 230000001360 synchronised effect Effects 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 4
- 239000004800 polyvinyl chloride Substances 0.000 claims description 4
- 238000000746 purification Methods 0.000 claims description 2
- 238000002474 experimental method Methods 0.000 abstract description 9
- 208000015181 infectious disease Diseases 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 7
- 230000002458 infectious effect Effects 0.000 abstract description 6
- 238000009792 diffusion process Methods 0.000 abstract description 4
- 238000004108 freeze drying Methods 0.000 abstract description 4
- 241000894006 Bacteria Species 0.000 abstract description 2
- 239000000443 aerosol Substances 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 238000005096 rolling process Methods 0.000 description 5
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000012806 monitoring device Methods 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
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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
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
-
- 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
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
- Devices For Use In Laboratory Experiments (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
A scanning type high-efficiency purifying return air gas collecting device relates to the technical field of air filters, and has the structure that: the biological safety valve is installed at the top of the air port box, the centrifugal fan is fixed at the bottom of the biological safety valve, a pipeline A and a pipeline B are arranged on the left side of the negative pressure meter monitor, the pipeline A is connected with the centrifugal fan, the pipeline B is connected with the air filter, the air filter is installed at an indoor scanning air port, the scanning mechanism is used for detecting the periodic leakage of the air filter through a scanning driving motor, the gas collecting hood is installed on the periphery of the air filter through a sealing pressing plate, and the gas collecting hood is used for carrying out height adjustment through the gas collecting hood lifting mechanism. The invention has the beneficial effects that: the method effectively reduces the diffusion of the aerosol of infectious substances generated in the freeze-drying experiment process of the infectious bacteria of the class A, reduces the infection risk of experiment operators in the freeze-drying process, solves the problem of infectious experiment activities which cannot be operated in a biosafety cabinet, and effectively protects the life safety of the laboratory operators.
Description
Technical Field
The invention relates to the technical field of air filters, in particular to a scanning type efficient purifying return air collecting device.
Background
When the biological safety laboratory, the biochemical laboratory and the like are used for high-grade biological tests, the high-grade safe high-efficiency filtering system can be erected at the position of the test bed, and the requirements of 'the high-efficiency air filter for exhaust can be disinfected and sterilized and leak detected in situ' in GB19489 'laboratory biological safety general requirement'. Because of the uncertainty of the experiment table and the experiment, the operation diversity of the experiment is caused, the polluted air cannot be timely and completely collected and discharged by the clean exhaust air in the common form, and the personal safety hidden trouble is caused to the experimenters. The prior art mode can satisfy holistic negative pressure in laboratory and clean requirement, but can not satisfy local special clean requirement, does not have the raising and lowering functions especially, and the polluted air that causes when doing the experiment can not in time quick collection purification get rid of outdoors, has the potential safety hazard.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a scanning type efficient purifying return air collecting device, which has the structure that: it is monitored by the negative pressure meter monitor (1); a scanning drive motor (2); a scanning mechanism (3); a leak differential pressure device (4); an air filter (5); a sealing pressure plate (6); a biosafety valve (7); a gas collecting hood lifting mechanism (8); a monitoring control device (9); a centrifugal fan (10); a gas-collecting hood (11); an air port box body (13); the chassis (14) is formed, an indoor scanning air port (12) is arranged in the middle of the chassis (14), a sealing pressing plate (6) is arranged around the chassis, an air port box body (13) is a closed cube or cuboid and is connected with the chassis (14) through the indoor scanning air port (12), a round hole is arranged at the top of the air port box body (13), a biological safety valve (7) is connected with the air port box body (13) through the round hole, a centrifugal fan (10) is fixed at the bottom of the biological safety valve (7), a motor B (10-1) is fixed on the side surface, air cleaner (5) are installed through indoor scanning wind gap (12) in wind gap box (13) bottom, and air cleaner (5) front end is fixed with monitoring control device (9) and leaks differential pressure ware (4), negative pressure table monitor (1) are fixed in wind gap box (13) openly, scanning mechanism (3) are fixed in wind gap box (13) bottom left side, gas collecting cover (11) are installed at air cleaner (5) periphery through sealing clamp plate (6), and gas collecting cover (11) go on high lift through gas collecting cover elevating system (8). The left side of the negative pressure meter monitor (1) is provided with a pipeline A (1-1) and a pipeline B (1-2), the pipeline A (1-1) is connected with a centrifugal fan (10), the pipeline B (1-2) is connected with an air filter (5), the negative pressure meter monitor (1) detects an indoor negative pressure value, the negative pressure value is fed back to a monitoring control device (9), and the exhaust air quantity of the centrifugal fan (10) is adjusted through the internal calculation of a PLC, so that the indoor negative pressure value is ensured, and the diffusion and escape of pollutants are prevented. The scanning mechanism (3) controls the scanning driving motor (2) to move positively and negatively through the PLC controller, a belt wheel A (3-1) is arranged on a rotating shaft of the scanning driving motor (2), the belt wheel A (3-1) drives a belt wheel B (3-3) to rotate through a synchronous toothed belt (3-2), and a scanning rod (3-4) is fixed on the synchronous toothed belt (3-2) and moves forwards and backwards along with the synchronous toothed belt (3-2) so as to realize periodic leakage detection of the air filter (5). The monitoring control device (9) regularly monitors tightness of the air filter (5) and the lap joint sealing part, and when the leakage condition is detected, the biological safety valve (7) is automatically closed in time to ensure that no pollution is caused to the outdoor atmospheric environment. The leakage pressure difference device (4) is provided with a high-pressure end and a low-pressure end, the high-pressure end is arranged on the indoor side of the air filter (5), and the low-pressure end is arranged on the outdoor side of the air filter (5). The gas collecting hood lifting mechanism (8) is characterized in that one end of a lifting traction rope (8-2) is fixed at four equally-divided corners at the bottom of a gas collecting hood (11) through a gas collecting hood fixing frame (8-1), the other end of the lifting traction rope penetrates through a guide wheel (8-3) to be installed on a roller (8-4) at the bottom of a tuyere box body, and the roller (8-4) is driven to rotate by a motor A (8-5) to realize lifting of the gas collecting hood. The gas-collecting channel (11) is made of flexible materials, including but not limited to circular horn shapes made of polyvinyl chloride films.
The invention is used in this way, the invention includes a liftable gas-collecting hood (11) which is installed on the periphery of the air filter (5) through the sealing pressing plate (6), the gas-collecting hood (11) can be adjusted in height through the gas-collecting hood lifting mechanism (8), different experimental operation heights are satisfied, and air pollution caused by different experimental conditions can be timely and completely collected; according to the invention, laboratory indoor air is rapidly extracted and discharged through the centrifugal fan (10), indoor polluted air is purified through the air filter (5) in the discharging process, the outdoor air is discharged, the indoor negative pressure condition is ensured, the indoor negative pressure value is detected through the negative pressure meter monitor (1), the monitoring data are summarized to the monitoring control device (9), and the frequency conversion work of the centrifugal fan (10) is regulated after calculation; according to the invention, the scanning mechanism (3) is driven by the scanning driving motor (2) to periodically detect leakage of the air filter (5), and the value of the leakage is displayed by the leakage pressure differential device (5). When the leakage is detected to be current, the biological safety valve (7) is closed, the centrifugal fan (10) is stopped in a linkage way, and pollution to the outdoor atmospheric environment is prevented.
The invention has the beneficial effects that: 1. effectively reducing the spread of infectious substance aerosol generated in the freeze-drying experiment process of the infectious bacteria of the class A; 2. the risk of infection of experimental operators in the freeze-drying process is reduced; 3. the method solves the problem of infectious experimental activities which cannot be operated in the biosafety cabinet; 4. effectively protecting the life safety of laboratory operators. The scanning type high-efficiency purifying return air gas collecting device has a negative pressure linkage control function so as to ensure the negative pressure condition of a biological laboratory. The scanning type high-efficiency purifying return air gas collecting device is provided with a high-efficiency filter and an automatic leakage monitoring device so as to ensure the cleanness of the exhaust air outside the biological laboratory. The automatic leakage monitoring device periodically monitors tightness of the air filter and the lap joint sealing part. When the leakage condition is detected, the biological safety valve is automatically closed in time to ensure that the outdoor atmospheric environment is not polluted. The scanning type efficient purifying and air returning and collecting device has a lifting function, when an experimenter performs experiments, the air collecting hood can be lowered to a certain proper height, and the equipment is improved to collect and purify local polluted air. The indoor cleaning time is shortened, and the harm to test personnel caused by the divergence of experimental polluted air into indoor air is avoided.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a right side view of FIG. 1;
FIG. 3 is a top view of FIG. 1;
FIG. 4 is a bottom view of FIG. 1;
FIG. 5 is a cross-sectional view of FIGS. 1 A-A;
in the figure: 1. a negative pressure gauge monitor; 1-1, a pipeline A;1-2, pipeline B; 2. a scan driving motor; 3. a scanning mechanism; 3-1' a belt wheel A;3-2, synchronizing the toothed belt; 3-3, a belt wheel B;3-4, scanning rod; 4. a leak differential pressure device; 5. an air filter; 6. a sealing pressing plate; 7. a biological safety valve; 8. a gas collecting hood lifting mechanism; 8-1, a gas collecting hood fixing frame; 8-2, lifting the traction rope; 8-3, a guide wheel; 8-4, a rolling shaft; 8-5, a motor A; 9. monitoring a control device; 10. a centrifugal fan; 10-1, motor B; 11. a gas collecting hood; 12. an indoor scanning tuyere; 13. an air port box body; 14. a chassis.
Detailed Description
Example 1: a scanning type high-efficiency purifying return air gas collecting device comprises a negative pressure meter monitor 1; a scanning drive motor 2; a scanning mechanism 3; a leak differential pressure device 4; an air filter 5; a sealing pressure plate 6; a biosafety valve 7; a gas collecting hood lifting mechanism 8; a monitoring control device 9; a centrifugal fan 10; a gas-collecting hood 11; a tuyere box 13; the air filter comprises a chassis 14, an indoor scanning air port 12 is arranged in the middle of the chassis 14, a sealing pressing plate 6 is arranged on the periphery of the chassis, an air port box 13 is a closed cube and is connected with the chassis 14 through the indoor scanning air port 12, a round hole is formed in the top of the air port box 13, a biosafety valve 7 is connected with the air port box 13 through the round hole, a centrifugal fan 10 is fixed at the bottom of the biosafety valve 7, a motor B10-1 is fixed on the side face of the biosafety valve, an air filter 5 is installed at the bottom of the air port box 13 through the indoor scanning air port 12, a monitoring control device 9 and a leakage pressure differential device 4 are fixed at the front end of the air filter 5, a negative pressure meter monitor 1 is fixed on the front face of the air port box 13, a scanning mechanism 3 is fixed on the left side of the bottom of the air port box 13, a gas collecting hood 11 is installed on the periphery of the air filter 5 through the sealing pressing plate 6, and the gas collecting hood 11 is lifted up and down through a gas collecting hood lifting mechanism 8. The left side of the negative pressure meter monitor 1 is provided with a pipeline A1-1 and a pipeline B1-2, the pipeline A1-1 is connected with the centrifugal fan 10, the pipeline B1-2 is connected with the air filter 5, the negative pressure meter monitor 1 detects an indoor negative pressure value, the negative pressure value is fed back to the monitoring control device 9, and the exhaust air quantity of the centrifugal fan 10 is adjusted through PLC internal calculation, so that the indoor negative pressure value is ensured, and the diffusion and escape of pollutants are prevented. The scanning mechanism 3 controls the scanning driving motor 2 to move in forward and reverse directions through the PLC controller, a belt wheel A3-1 is arranged on a rotating shaft of the scanning driving motor 2, the belt wheel A3-1 drives a belt wheel B3-3 to rotate through a synchronous toothed belt 3-2, a scanning rod 3-4 is fixed on the synchronous toothed belt 3-2 and moves back and forth along with the synchronous toothed belt 3-2, and periodic leakage detection of the air filter 5 is achieved. The monitoring control device 9 periodically monitors tightness of the air filter 5 and the lap joint sealing part, and when the leakage condition is detected, the biological safety valve 7 is automatically closed in time to ensure that no pollution is caused to the outdoor atmospheric environment. The leakage pressure difference device 4 is provided with a high-pressure end and a low-pressure end, the high-pressure end is arranged on the indoor side of the air filter 5, and the low-pressure end is arranged on the outdoor side of the air filter 5. The lifting mechanism 8 of the gas collecting hood is characterized in that one end of a lifting traction rope 8-2 is fixed at four equally divided corners at the bottom of the gas collecting hood 11 through a gas collecting hood fixing frame 8-1, the other end of the lifting traction rope passes through a guide wheel 8-3 and is arranged on a rolling shaft 8-4 at the bottom of a tuyere box body, and the rolling shaft 8-4 is driven to rotate by a motor A8-5 to realize lifting of the gas collecting hood. The gas-collecting channel 11 is made of flexible material, including, but not limited to, a circular horn made of polyvinyl chloride film.
Example 2: a scanning type high-efficiency purifying return air gas collecting device comprises a negative pressure meter monitor 1; a scanning drive motor 2; a scanning mechanism 3; a leak differential pressure device 4; air-conditioner a filter 5; a sealing pressure plate 6; a biosafety valve 7; a gas collecting hood lifting mechanism 8; a monitoring control device 9; a centrifugal fan 10; a gas-collecting hood 11; a tuyere box 13; the air filter comprises a chassis 14, an indoor scanning air port 12 is arranged in the middle of the chassis 14, a sealing pressing plate 6 is arranged on the periphery of the chassis, an air port box 13 is a closed cuboid and is connected with the chassis 14 through the indoor scanning air port 12, a round hole is formed in the top of the air port box 13, a biosafety valve 7 is connected with the air port box 13 through the round hole, a centrifugal fan 10 is fixed at the bottom of the biosafety valve 7, a motor B10-1 is fixed on the side face of the biosafety valve, an air filter 5 is installed at the bottom of the air port box 13 through the indoor scanning air port 12, a monitoring control device 9 and a leakage pressure differential device 4 are fixed at the front end of the air filter 5, a negative pressure meter monitor 1 is fixed on the front face of the air port box 13, a scanning mechanism 3 is fixed on the left side of the bottom of the air port box 13, a gas collecting hood 11 is installed on the periphery of the air filter 5 through the sealing pressing plate 6, and the gas collecting hood 11 is lifted up and down through a gas collecting hood lifting mechanism 8. The left side of the negative pressure meter monitor 1 is provided with a pipeline A1-1 and a pipeline B1-2, the pipeline A1-1 is connected with a centrifugal fan 10, the pipeline B1-2 is connected with an air filter 5, the negative pressure meter monitor 1 detects the indoor negative pressure value, the negative pressure value is fed back to the monitoring control device 9, and the exhaust air quantity of the centrifugal fan 10 is adjusted through the internal calculation of the PLC, so that the indoor negative pressure value is ensured, and the diffusion and escape of pollutants are prevented. The scanning mechanism 3 controls the scanning driving motor 2 to move in forward and reverse directions through the PLC controller, a belt wheel A3-1 is arranged on a rotating shaft of the scanning driving motor 2, the belt wheel A3-1 drives a belt wheel B3-3 to rotate through a synchronous toothed belt 3-2, a scanning rod 3-4 is fixed on the synchronous toothed belt 3-2 and moves back and forth along with the synchronous toothed belt 3-2, and periodic leakage detection of the air filter 5 is achieved. The monitoring control device 9 periodically monitors tightness of the air filter 5 and the lap joint sealing part, and when the leakage condition is detected, the biological safety valve 7 is automatically closed in time to ensure that no pollution is caused to the outdoor atmospheric environment. The leakage pressure difference device 4 is provided with a high-pressure end and a low-pressure end, the high-pressure end is arranged on the indoor side of the air filter 5, and the low-pressure end is arranged on the outdoor side of the air filter 5. The lifting mechanism 8 of the gas collecting hood is characterized in that one end of a lifting traction rope 8-2 is fixed at four equally divided corners at the bottom of the gas collecting hood 11 through a gas collecting hood fixing frame 8-1, the other end of the lifting traction rope passes through a guide wheel 8-3 and is arranged on a rolling shaft 8-4 at the bottom of a tuyere box body, and the rolling shaft 8-4 is driven to rotate by a motor A8-5 to realize lifting of the gas collecting hood. The gas-collecting channel 11 is made of flexible material, including, but not limited to, a circular horn made of polyvinyl chloride film.
Several variations and modifications are contemplated as falling within the scope of the present invention.
Claims (4)
1. A scanning type high-efficient purification return air gas-collecting device which is characterized in that: the device comprises a negative pressure meter monitor (1), a scanning driving motor (2), a scanning mechanism (3), a leakage pressure difference device (4), an air filter (5), a sealing pressing plate (6), a biological safety valve (7), a gas collecting cover lifting mechanism (8), a monitoring control device (9), a centrifugal fan (10), a gas collecting cover (11), a gas inlet box body (13) and a chassis (14), wherein an indoor scanning air inlet (12) is arranged in the middle of the chassis (14), the sealing pressing plate (6) is arranged at the periphery, the gas inlet box body (13) is a closed square body or cuboid, the air inlet box body (12) is connected with the chassis (14) through the indoor scanning air inlet, a round hole is formed in the top of the gas inlet box body (13), the biological safety valve (7) is connected with the gas inlet box body (13) through the round hole, the centrifugal fan (10) is fixed at the bottom of the biological safety valve (7), a motor B (10-1) is fixed on the side surface, the air inlet box body (13) is provided with the air filter (5) through the indoor scanning air inlet (12), the monitoring control device (9) and the leakage pressure difference device (4) are fixed at the front end of the air filter (5), the negative pressure meter (1) is fixed at the left side of the air inlet (13) of the monitoring box body (13), the air collecting hood (11) is arranged on the periphery of the air filter (5) through a sealing pressing plate (6), four equally-divided corners of the air collecting hood (11) are connected with an air collecting hood lifting mechanism (8), one end of a lifting traction rope (8-2) is fixed at the four equally-divided corners of the bottom of the air collecting hood (11) through an air collecting hood fixing frame (8-1), the other end of the lifting traction rope penetrates through a guide wheel (8-3) to be arranged on a roller (8-4) at the bottom of an air inlet box body, the roller (8-4) is driven to rotate by a motor A (8-5), lifting of the air collecting hood (11) is achieved, and the air collecting hood (11) is made of flexible materials and comprises, but is not limited by, a circular horn shape made of a polyvinyl chloride film.
2. A scanning type efficient purifying return air collecting device as claimed in claim 1, wherein: the left side of the negative pressure meter monitor (1) is provided with a pipeline A (1-1) and a pipeline B (1-2), the pipeline A (1-1) is connected with a centrifugal fan (10), and the pipeline B (1-2) is connected with an air filter (5).
3. A scanning type efficient purifying return air collecting device as claimed in claim 1, wherein: the scanning mechanism (3) controls the scanning driving motor (2) to move positively and negatively through the PLC controller, a belt wheel A (3-1) is arranged on a rotating shaft of the scanning driving motor (2), the belt wheel A (3-1) drives a belt wheel B (3-3) to rotate through a synchronous toothed belt (3-2), and a scanning rod (3-4) is fixed on the synchronous toothed belt (3-2) and moves forwards and backwards along with the synchronous toothed belt (3-2) so as to realize periodic leakage detection of the air filter (5).
4. A scanning type efficient purifying return air collecting device as claimed in claim 1, wherein: the leakage pressure difference device (4) is provided with a high-pressure end and a low-pressure end, the high-pressure end is arranged on the indoor side of the air filter (5), and the low-pressure end is arranged on the outdoor side of the air filter (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910534951.XA CN110145823B (en) | 2019-06-20 | 2019-06-20 | Scanning type efficient purifying return air gas collecting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910534951.XA CN110145823B (en) | 2019-06-20 | 2019-06-20 | Scanning type efficient purifying return air gas collecting device |
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| CN110145823A CN110145823A (en) | 2019-08-20 |
| CN110145823B true CN110145823B (en) | 2024-04-09 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110500673B (en) * | 2019-08-28 | 2021-05-07 | 明光市龙盛瑞新材料科技有限公司 | Cabinet type particle attapulgite air purification device |
| CN113483430B (en) * | 2021-06-11 | 2022-09-23 | 中国人民解放军军事科学院军事医学研究院 | Binary channels bioaerosol real-time supervision equipment |
| CN115014651A (en) * | 2022-08-04 | 2022-09-06 | 西安四腾环境科技有限公司 | Online detection device for leakage of air exhaust filtering unit in P3-level biosafety experiment |
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| CN105598119A (en) * | 2015-12-23 | 2016-05-25 | 天津艾力特斯科技有限公司 | Movable laboratory exhaust blower |
| CN107875744A (en) * | 2017-11-13 | 2018-04-06 | 京华建设科技有限公司 | A kind of sealed purification laminar flow hood |
| CN210107604U (en) * | 2019-06-20 | 2020-02-21 | 青海省地方病预防控制所 | Scanning type efficient purifying, air returning and air collecting device |
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| CN110145823A (en) | 2019-08-20 |
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