CN113976189A - Ventilation biological safety cabinet - Google Patents
Ventilation biological safety cabinet Download PDFInfo
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- CN113976189A CN113976189A CN202111190967.7A CN202111190967A CN113976189A CN 113976189 A CN113976189 A CN 113976189A CN 202111190967 A CN202111190967 A CN 202111190967A CN 113976189 A CN113976189 A CN 113976189A
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- cabinet body
- negative pressure
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- biological safety
- air
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L1/00—Enclosures; Chambers
- B01L1/50—Enclosures; Chambers for storing hazardous materials in the laboratory, e.g. cupboards, waste containers
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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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- 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
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- 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
- B01D53/02—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 adsorption, e.g. preparative gas chromatography
- B01D53/04—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 adsorption, e.g. preparative gas chromatography with stationary adsorbents
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- 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
- B01D53/02—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 adsorption, e.g. preparative gas chromatography
- B01D53/04—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 adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0407—Constructional details of adsorbing systems
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- 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
- B01D53/02—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 adsorption, e.g. preparative gas chromatography
- B01D53/04—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 adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0454—Controlling adsorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
- B08B15/023—Fume cabinets or cupboards, e.g. for laboratories
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
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- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Clinical Laboratory Science (AREA)
- Accommodation For Nursing Or Treatment Tables (AREA)
Abstract
The invention belongs to the technical field of safety cabinets, in particular to a ventilation biological safety cabinet, which aims at solving the problem that the existing biological safety cabinet cannot prevent or reduce the diffusion of harmful suspended matters and biological aerosol in time. According to the invention, the negative pressure fan and the drainage fan work in sequence, so that the filtered and disinfected air flow is purified by the first purification mechanism, the average flow velocity and direction of the flow equalizing frame, the negative pressure adsorption of the first negative pressure adsorption plate and the second negative pressure adsorption plate and the purification of the second purification mechanism in sequence, and the whole air flow is discharged from top to bottom, so that the possibility that harmful suspended matters and biological aerosol which are scattered on the surface and the upper end of the substrate secondarily pollute an experimental sample is avoided.
Description
Technical Field
The invention relates to the technical field of safety cabinets, in particular to a ventilated biological safety cabinet.
Background
The biological safety cabinet is a box-shaped air purification negative pressure safety device which can prevent aerosol dissipation caused by some dangerous or unknown biological particles in the experimental operation treatment process; its theory of operation is mainly with the outside suction of cabinet interior air, makes and keeps negative pressure state in the cabinet, protects the staff through vertical air current, and in the outside air gets into the safety cabinet after high-efficient air cleaner filters to avoid handling the sample and polluted, and the air in the cabinet also need pass through the HEPA filter and filter the back and discharge in the atmosphere again, in order to protect the environment.
The biosafety cabinet can control the emission of polluted air in an operation area through a special filtering channel, is the most basic safety protection equipment in a primary protection barrier in the biological safety of a laboratory, has good effects on improving process conditions and protecting the body health and the environment of an operator, and is widely applied to scientific research, teaching, clinical examination and production in the fields of microbiology, biomedicine, genetic engineering, biological products and the like; the existing ventilation biological safety cabinet has the problem that the diffusion of harmful suspended matters and biological aerosol cannot be prevented or reduced in time, and further the cross contamination among the environment in the cabinet, experimental samples and samples is caused.
Disclosure of Invention
Based on the technical problem that the diffusion of harmful suspended matters and bioaerosol cannot be prevented or reduced in time in the prior art, the invention provides a ventilation biological safety cabinet.
The invention provides a ventilated biological safety cabinet which comprises a cabinet body, wherein an operation reaction cavity and a containing groove are arranged at the upper end and the lower end in the cabinet body, side doors are fixedly arranged at two sides of the cabinet body, the upper end in one end of the cabinet body is an inclined plane, a first purification mechanism, a drainage fan and a flow equalizing frame are fixedly arranged in the operation reaction cavity from top to bottom, cameras are fixedly arranged at the middle of the upper end and two sides of the lower end of the inner wall at the other end of the operation reaction cavity, a base plate is embedded at the bottom end of the operation reaction cavity, an arc-shaped separation cover is fixedly arranged at the upper end of the containing groove, a first negative pressure adsorption plate and a second negative pressure adsorption plate are fixedly arranged in the arc-shaped separation cover from top to bottom, a plurality of guide pipes with equal distance are fixedly connected at the top end of the first negative pressure adsorption plate and the bottom end of the base plate, the upper end in the circumference of each guide pipe is hollow, a booster fan is fixedly arranged at the lower end of each guide pipe, an exhaust pipe is fixedly arranged at the bottom end of the arc-shaped separation cover, and the lower end of the exhaust pipe is fixedly provided with a second purification mechanism, and the outlet end of the exhaust pipe is fixedly connected with a negative pressure fan.
Preferably, the four corners of the bottom end of the cabinet body are fixedly provided with supporting legs, the bottom ends of the four supporting legs are fixedly connected with a pressure dividing seat, the middle of the top end of the pressure dividing seat is fixedly provided with a sleeve, the two ends of the two sides of the pressure dividing seat are fixedly provided with cylinders, and the bottom ends of the cylinders are fixedly provided with walking wheels.
Preferably, four arc walls with equal angles are arranged at the upper end of the sleeve, a damping shock absorber is fixedly mounted at the bottom end inside the sleeve and is in a round platform shape which is wide at the upper part and narrow at the lower part, a pneumatic column is fixedly mounted at the top end of the damping shock absorber, four supporting rods are fixedly mounted at the outer wall of the fixed end of the pneumatic column and slide inside the arc walls, a plurality of shock absorbing rods with equal angles are fixedly mounted at the upper end of the circumference of the telescopic end of the pneumatic column in an inclined mode, and a plurality of silencing blocks are fixedly connected to the top ends of the shock absorbing rods and the bottom end of the cabinet body.
Preferably, the top end of the cabinet body is fixedly provided with an air inlet pipe, the air inlet pipe is internally and slidably provided with a filter screen and a combined disinfection frame, and a central pull ring is fixedly inserted in the middle of the filter screen and the combined disinfection frame.
Preferably, the display screen is fixedly mounted at the top end of one end of the cabinet body, two perforations are formed in the middle of one end of the cabinet body, the rectangular opening is formed in the lower end of one end of the cabinet body, the movable plate and the two rubber sleeves are slidably mounted inside the rectangular opening, the hole covers are rotatably mounted at the upper ends of the inner sides of the two perforations through the loaded hinges, and elastic tightening ropes are fixedly connected between the contraction ends of the rubber sleeves and the inner walls of the hole covers.
Preferably, the four sides inside the flow equalizing frame are fixedly provided with air guiding fans, the bottom end of the flow equalizing frame is provided with a plurality of equidistant air holes, and the outer wall of the bottom end of the flow equalizing frame is provided with a plurality of equidistant illuminating lamps.
Preferably, the top end of the guide pipe is fixedly provided with a centralized bucket, the top end of the base plate is provided with a plurality of equidistant through holes, and the through holes correspond to the centralized bucket.
Preferably, the base plate, the concentration hopper, the conduit, the arc-shaped separation cover, the first negative pressure adsorption plate and the second negative pressure adsorption plate are all provided with an antibacterial layer.
The beneficial effects of the invention are as follows:
1. the ventilation biosafety cabinet provided by the invention has the advantages that the negative pressure fan and the drainage fan work in sequence, so that the filtered and sterilized air flow passes through the first purification mechanism for purification, the average flow velocity and direction of the flow equalizing frame, the negative pressure adsorption of the first negative pressure adsorption plate and the second negative pressure adsorption plate and the purification of the second purification mechanism in sequence, the whole air flow is discharged from top to bottom, the possibility that the harmful suspended matters and the bioaerosols scattered on the surface of the substrate and the upper end of the substrate secondarily pollute the experimental sample is avoided, the possibility that the experimental sample is sucked by an experimenter during examination is avoided, the diffusion of the harmful suspended matters and the bioaerosols is caused when the experimental sample is scattered or the reaction of a reagent is carried out instantly or when the reaction is unexpected, the plurality of pressure increasing fans work, the wind speed is accelerated, the harmful suspended matters and the bioaerosols are pumped out in time and high efficiently, and the first negative pressure adsorption plate and the second negative pressure adsorption plate have strong negative pressure adsorption performance, harmful suspended matters and biological aerosol of the arc-shaped separation cover are absorbed and discharged in time, and the discharge efficiency of the harmful suspended matters and the biological aerosol is further enhanced.
2. The invention provides a ventilation biosafety cabinet, which is characterized in that a partial pressure seat is arranged at the bottom end of a cabinet body, so that all parts of the cabinet body are uniformly stressed, further airflow flowing and output directions in the cabinet body are stable, and the diffusion of harmful suspended matters and bioaerosol is slowed down.
3. According to the ventilated biological safety cabinet, the filter screen and the combined disinfection frame are slidably mounted in the air inlet pipe, air entering the cabinet body is filtered, disinfected and sterilized, the problem that bacteria in the external environment influence the environment in the cabinet body, so that biological culture fails or experimental results are inaccurate is solved, the central pull ring is fixedly inserted between the filter screen and the combined disinfection frame, the filter screen and the combined disinfection frame are conveniently taken out integrally, and the inspection, maintenance and replacement efficiency is improved.
4. According to the ventilated biological safety cabinet, the reaction process is monitored through the multiple multi-directional cameras, the illuminating lamps are used for illuminating, the display screen displays images of the reaction process, the phenomenon that an experimenter stretches to watch the reaction inside the cabinet body is avoided, and the influence of the diffusion of harmful suspended matters and biological aerosol on the body of the experimenter is greatly reduced.
5. According to the ventilation biosafety cabinet, the air guiding fans are fixedly mounted on four sides inside the flow equalizing frame, so that the air flow speeds discharged by the flow equalizing frame are approximately the same through pressurization conveniently, the through holes correspond to the concentrated buckets, a corresponding convection system is conveniently established, the air flow speed is accelerated, and further the diffusion of harmful suspended matters and bioaerosols is inhibited, and the antibacterial layers are arranged on the base plate, the concentrated buckets, the guide pipe, the arc-shaped separation cover, the first negative pressure adsorption plate and the second negative pressure adsorption plate, so that the bioaerosols are prevented from growing and breeding on the surface of the base plate.
Drawings
FIG. 1 is a schematic structural view of a ventilated biosafety cabinet according to the present invention;
FIG. 2 is a schematic structural view of the interior of a cabinet body of a ventilated biological safety cabinet according to the present invention;
FIG. 3 is a schematic view of the inside of a perforated hole of a ventilated biological safety cabinet according to the present invention;
FIG. 4 is a schematic side view of the interior of a sleeve of a ventilated biosafety cabinet according to the present invention;
fig. 5 is a schematic side view of a central pull ring of the ventilated biological safety cabinet according to the present invention.
In the figure: 1 cabinet body, 2 air inlet pipes, 3 display screens, 4 perforations, 5 side doors, 6 moving plates, 7 accommodating grooves, 8 supporting legs, 9 partial pressure seats, 10 traveling wheels, 11 cylinders, 12 substrates, 13 operation reaction chambers, 14 sleeves, 15 first purification mechanisms, 16 drainage fans, 17 filter screens, 18 central pull rings, 19 combined disinfection frames, 21 drainage fans, 22 illuminating lamps, 23 cameras, 24 centralized buckets, 25 guide pipes, 26 arc-shaped separation covers, 27 exhaust pipes, 28 negative pressure fans, 29 second purification mechanisms, 30 second negative pressure adsorption plates, 31 first negative pressure adsorption plates, 32 booster fans, 33 flow equalizing frames, 34 elastic tightening ropes, 35 rubber sleeves, 36 hole covers, 37 arc-shaped grooves, 38 damping shock absorbers, 39 air pressure columns and 40 shock absorption rods.
Detailed Description
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.
Referring to fig. 1-5, a ventilated biosafety cabinet comprises a cabinet body 1, wherein an operation reaction chamber 13 and a containing groove 7 are arranged at the upper end and the lower end inside the cabinet body 1, side doors 5 are fixedly arranged at two sides of the cabinet body 1, the upper end in one end of the cabinet body 1 is an inclined plane, a first purification mechanism 15, a drainage fan 16 and a flow equalizing frame 33 are fixedly arranged inside the operation reaction chamber 13 from top to bottom in sequence, cameras 23 are fixedly arranged at the middle of the upper end and two sides of the lower end of the inner wall at the other end of the operation reaction chamber 13, a substrate 12 is embedded at the bottom end of the operation reaction chamber 13, an arc-shaped partition 26 is fixedly arranged at the upper end of the containing groove 7, a first negative pressure adsorption plate 31 and a second negative pressure adsorption plate 30 are fixedly arranged inside the arc-shaped partition 26 from top to bottom in sequence, a plurality of guide tubes 25 with equal distance are fixedly connected at the top end of the first negative pressure adsorption plate 31 and the bottom end of the substrate 12, and the upper ends of the circumferences of the guide tubes 25 are hollowed-out, the convenient dispersion of harmful substance and biological aerosol when booster fan 32 is out of work is derived fast, and pipe 25 lower extreme fixed mounting has booster fan 32, and the arc separates cover 26 bottom fixed mounting and has blast pipe 27, and blast pipe 27 lower extreme fixed mounting has second purification mechanism 29, and blast pipe 27 exit end fixed connection has negative-pressure air fan 28.
According to the invention, the four corners of the bottom end of the cabinet body 1 are fixedly provided with the supporting legs 8, the bottom ends of the four supporting legs 8 are fixedly connected with the pressure-dividing seat 9, so that the stress on each part of the cabinet body 1 is uniform, further, the airflow flowing and outputting direction in the cabinet body 1 is stable, the diffusion of harmful suspended matters and bioaerosols is slowed down, the middle of the top end of the pressure-dividing seat 9 is fixedly provided with the sleeve 14, the two ends of the two sides of the pressure-dividing seat 9 are fixedly provided with the air cylinders 11, the bottom ends of the air cylinders 11 are fixedly provided with the travelling wheels 10, when the air cylinders 11 retract, the cabinet body 1 is stably placed, and when the air cylinders 11 extend, the travelling wheels 10 are attached to the ground and lower than the bottom ends of the pressure-dividing seats 9, so that the cabinet body 1 can be conveniently transported and moved;
the upper end of the sleeve 14 is provided with four arc-shaped grooves 37 with equal angles, the bottom end inside the sleeve 14 is fixedly provided with a damping shock absorber 38, the damping shock absorber 38 is in a round table shape with a wide upper part and a narrow lower part, the top end of the damping shock absorber 38 is fixedly provided with an air pressure column 39, the outer wall of the fixed end of the air pressure column 39 is fixedly provided with four supporting rods, the four supporting rods slide inside the arc-shaped grooves 37, the upper end of the circumference of the telescopic end of the air pressure column 39 is obliquely and fixedly provided with a plurality of shock absorbing rods 40 with equal angles, the top ends of the shock absorbing rods 40 and the bottom end of the cabinet body 1 are fixedly connected with a plurality of silencing blocks, the damping shock absorber 38, the air pressure column 39 and the shock absorbing rods 40 with equal angles are sequentially arranged from bottom to top through the sleeve 14, and the diffusion of harmful suspended matters and bioaerosols caused by the working vibration of the drainage fan 16, the air guiding fan 21, the negative pressure fan 28 and the booster fan 32 is further slowed down;
the air inlet pipe 2 is fixedly installed at the top end of the cabinet body 1, the filter screen 17 and the combined disinfection frame 19 are installed in the air inlet pipe 2 in a sliding mode, air entering the cabinet body 1 is filtered, disinfected and sterilized, the problem that bacteria in the external environment influence the environment inside the cabinet body 1 to further cause biological culture failure or inaccurate experimental results is solved, the central pull ring 18 is fixedly inserted between the filter screen 17 and the combined disinfection frame 19, the whole cabinet body is conveniently taken out, and the inspection, maintenance and replacement efficiency is improved;
the top end of one end of the cabinet body 1 is fixedly provided with a display screen 3, the reaction process is monitored through a plurality of multi-directional cameras 23, the illuminating lamp 22 illuminates, the display screen 3 displays images of the reaction process, the phenomenon that an experimenter stretches to watch the reaction inside the cabinet body 1 is avoided, the influence of the diffusion of harmful suspended matters and biological aerosol on the body of the experimenter is greatly reduced, the middle of one end of the cabinet body 1 is provided with two through holes 4, the lower end of one end of the cabinet body 1 is provided with a rectangular opening, a moving plate 6 is slidably arranged in the rectangular opening, the inner sides of the two through holes 4 are fixedly connected with rubber sleeves 35, the upper ends of the inner sides of the two through holes 4 are rotatably provided with hole covers 36 through loaded hinges, and an elastic tightening rope 34 is fixedly connected between the contraction end of the rubber sleeve 35 and the inner wall of the hole cover 36, when no experimenter operates, the hole cover 36 is tightly attached to the inner wall of the inclined plane of the cabinet body 1, and the rubber sleeve 35 is positioned inside the hole cover 36 under the action of the elastic tightening rope 34;
the four sides inside the flow equalizing frame 33 are fixedly provided with the air guiding fans 21, so that the air flow speed discharged by the flow equalizing frame 33 is approximately the same through pressurization, the bottom end of the flow equalizing frame 33 is provided with a plurality of equidistant air holes, and the outer wall of the bottom end of the flow equalizing frame 33 is provided with a plurality of equidistant illuminating lamps 22;
the top end of the conduit 25 is fixedly provided with a concentration hopper 24, which is convenient for rapidly and concentratedly guiding out the liquid which is accidentally poured, the top end of the base plate 12 is provided with a plurality of equidistant through holes, and the through holes correspond to the concentration hopper 24;
the base plate 12, the concentration hopper 24, the conduit 25, the arc-shaped separation cover 26, the first negative pressure adsorption plate 31 and the second negative pressure adsorption plate 30 are all provided with an antibacterial layer, so that the bioaerosol is prevented from growing and propagating on the surface of the base plate.
The working principle is as follows: the negative pressure fan 28 and the drainage fan 16 work in sequence, so that the filtered and disinfected air flow is purified by the first purification mechanism 15, the average flow velocity and direction of the flow equalizing frame 33, the negative pressure adsorption of the first negative pressure adsorption plate 31 and the second negative pressure adsorption plate 30 and the purification of the second purification mechanism 29 in sequence, the whole air flow is discharged from top to bottom, the possibility of secondary pollution of harmful suspended matters and biological aerosol on the surface of the base plate 12 and the upper end of the base plate is avoided, the possibility of inhalation of an experimenter during checking is avoided, the diffusion of the harmful suspended matters and the biological aerosol caused by the instant of the scattering of the experimental sample or the instant of the reaction of adding reagents or the accident of the reaction is avoided, the plurality of booster fans 32 work, the wind speed is accelerated to strengthen the wind power, the harmful suspended matters and the biological aerosol are pumped away and treated in time, rapidly and efficiently, and the first negative pressure adsorption plate 31 and the second negative pressure adsorption plate 30 have stronger negative pressure adsorption performance, harmful suspended matters and biological aerosol of the arc-shaped separation cover 26 are adsorbed and discharged in time, so that the discharge efficiency of the harmful suspended matters and the biological aerosol is further improved;
the bottom end of the cabinet body 1 is provided with the pressure-dividing seat 9, so that all parts of the cabinet body 1 are uniformly stressed, the airflow flowing and output direction in the cabinet body 1 is further stable, the diffusion of harmful suspended matters and bioaerosol is also slowed down, the two ends of the two sides of the pressure-dividing seat 9 are fixedly provided with the air cylinder 11 and the travelling wheel 10, when the air cylinder 11 retracts, the cabinet body 1 is stably placed, when the air cylinder 11 extends, the travelling wheel 10 is attached to the ground and is lower than the bottom end of the pressure-dividing seat 9, the transportation and the movement of the cabinet body 1 are convenient, and the damping shock absorber 38, the air pressure column 39 and the shock absorption rods 40 with equal angles are sequentially arranged from bottom to top through the sleeve 14, so that the diffusion of the harmful suspended matters and the bioaerosol caused by the working shock of the drainage fan 16, the air introduction fan 21, the negative pressure fan 28 and the booster fan 32 is further slowed down;
the filter screen 17 and the combined disinfection frame 19 are slidably mounted in the air inlet pipe 2, so that air entering the cabinet body 1 is filtered, disinfected and sterilized, the problem that bacteria in the external environment influence the environment in the cabinet body 1 to further cause biological culture failure or inaccurate experimental results is solved, the central pull ring 18 is fixedly inserted between the filter screen 17 and the combined disinfection frame 19, the whole body is conveniently taken out, and the inspection, maintenance and replacement efficiency is improved;
the reaction process is monitored through the multiple multi-directional cameras 23, the illuminating lamps 22 illuminate, and the display screen 3 displays images of the reaction process, so that the phenomenon that an experimenter stretches to watch the reaction inside the cabinet body 1 is avoided, and the influence of the diffusion of harmful suspended matters and biological aerosol on the body of the experimenter is greatly reduced;
through the inside four sides equal fixed mounting of frame 33 that flow equalizes there is air guide fan 21, make things convenient for the pressure boost to make the frame 33 combustion gas velocity that flow equalizes roughly the same, and a plurality of through-holes with concentrate 24 homogeneous phases of fighting and correspond, conveniently establish corresponding convection system, the speed of air current and then restrain the diffusion of harmful suspended solid and biological aerosol, and base plate 12, concentrate fighting 24, pipe 25, arc separate cover 26, first negative pressure adsorption plate 31 and second negative pressure adsorption plate 30 all are provided with antibiotic layer, avoid biological aerosol to propagate on its surface growth.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. A ventilation biosafety cabinet comprises a cabinet body (1), wherein an operation reaction chamber (13) and a containing groove (7) are arranged at the upper end and the lower end inside the cabinet body (1), side doors (5) are fixedly arranged on two sides of the cabinet body (1), the upper end of one end of the cabinet body (1) is an inclined plane, the ventilation biosafety cabinet is characterized in that a first purification mechanism (15), a drainage fan (16) and a flow equalizing frame (33) are fixedly arranged inside the operation reaction chamber (13) from top to bottom in sequence, cameras (23) are fixedly arranged in the middle of the upper end of the inner wall at the other end of the operation reaction chamber (13) and on two sides of the lower end of the inner wall, a base plate (12) is inlaid at the bottom end of the operation reaction chamber (13), an arc-shaped separation cover (26) is fixedly arranged at the upper end of the containing groove (7), and a first negative pressure adsorption plate (31) and a second negative pressure adsorption plate (30) are fixedly arranged inside the arc-shaped separation cover (26) from top to bottom in sequence, first negative pressure adsorption plate (31) top and base plate (12) bottom fixedly connected with a plurality of equidistance pipe (25), and upper end is the fretwork form in pipe (25) circumference, and pipe (25) lower extreme fixed mounting has booster fan (32), the arc separates cover (26) bottom fixed mounting and has blast pipe (27), and blast pipe (27) lower extreme fixed mounting has second purification mechanism (29), and blast pipe (27) outlet end fixedly connected with negative pressure fan (28).
2. The ventilated biological safety cabinet according to claim 1, wherein the four corners of the bottom of the cabinet body (1) are fixedly provided with the support legs (8), the bottom ends of the four support legs (8) are fixedly connected with the pressure dividing base (9), the middle of the top end of the pressure dividing base (9) is fixedly provided with the sleeve (14), the two ends of the two sides of the pressure dividing base (9) are fixedly provided with the cylinders (11), and the bottom ends of the cylinders (11) are fixedly provided with the travelling wheels (10).
3. The ventilated biological safety cabinet according to claim 2, wherein four equiangular arc-shaped grooves (37) are formed in the upper end of the sleeve (14), the damping shock absorber (38) is fixedly mounted at the bottom end inside the sleeve (14), the damping shock absorber (38) is in a round table shape with a wide upper part and a narrow lower part, the top end of the damping shock absorber (38) is fixedly mounted with an air pressure column (39), the outer wall of the fixed end of the air pressure column (39) is fixedly mounted with four support rods, the four support rods slide inside the arc-shaped grooves (37), a plurality of equiangular shock-absorbing rods (40) are obliquely and fixedly mounted at the upper end of the circumference of the telescopic end of the air pressure column (39), and a plurality of sound-absorbing blocks are fixedly connected to the top ends of the shock-absorbing rods (40) and the bottom end of the cabinet body (1).
4. The ventilated biological safety cabinet according to claim 1, wherein the top end of the cabinet body (1) is fixedly provided with the air inlet pipe (2), the air inlet pipe (2) is internally provided with the filter screen (17) and the combined disinfection frame (19) in a sliding manner, and the middle of the filter screen (17) and the combined disinfection frame (19) is fixedly inserted with the central pull ring (18).
5. The ventilation biosafety cabinet according to claim 1, characterized in that a display screen (3) is fixedly mounted at the top end of one end of the cabinet body (1), two through holes (4) are formed in the middle of one end of the cabinet body (1), a rectangular opening is formed in the lower end of one end of the cabinet body (1), a movable plate (6) is slidably mounted in the rectangular opening, two rubber sleeves (35) are fixedly connected to the inner sides of the through holes (4), hole covers (36) are rotatably mounted at the upper ends of the inner sides of the two through holes (4) through hinge-loaded sheets, and elastic tightening ropes (34) are fixedly connected between the contraction ends of the rubber sleeves (35) and the inner walls of the hole covers (36).
6. The ventilated biological safety cabinet according to claim 1, wherein the flow equalizing frame (33) is fixedly provided with air guiding fans (21) at four sides inside, the bottom end of the flow equalizing frame (33) is provided with a plurality of equidistant air holes, and the outer wall of the bottom end of the flow equalizing frame (33) is provided with a plurality of equidistant illuminating lamps (22).
7. A ventilated biological safety cabinet according to claim 6, wherein the top end of the conduit (25) is fixedly provided with a concentration bucket (24), the top end of the base plate (12) is provided with a plurality of through holes with equal distance, and the plurality of through holes correspond to the concentration bucket (24).
8. The ventilated biological safety cabinet according to claim 7, wherein the base plate (12), the collecting hopper (24), the guide pipe (25), the arc-shaped separation cover (26), the first negative pressure adsorption plate (31) and the second negative pressure adsorption plate (30) are provided with antibacterial layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111190967.7A CN113976189A (en) | 2021-10-13 | 2021-10-13 | Ventilation biological safety cabinet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111190967.7A CN113976189A (en) | 2021-10-13 | 2021-10-13 | Ventilation biological safety cabinet |
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| Publication Number | Publication Date |
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| CN113976189A true CN113976189A (en) | 2022-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111190967.7A Pending CN113976189A (en) | 2021-10-13 | 2021-10-13 | Ventilation biological safety cabinet |
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| CN (1) | CN113976189A (en) |
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| CN114682600A (en) * | 2022-03-26 | 2022-07-01 | 深圳市嘉鸿顺实业有限公司 | Ventilation control system |
| CN115283024A (en) * | 2022-08-16 | 2022-11-04 | 重庆医药高等专科学校 | Subregion biological safety cabinet with autoclaving function |
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