108 results about "Biosafety cabinet" patented technology

The utility model discloses a biosafety cabinet capable of double-layer filtration, which comprises a cabinet body, an operation chamber is arranged in the cabinet body, and a bottom air duct is arranged at the bottom end of the operation chamber. By arranging the reducing pipe, the exhaust pipe, the exhaust outlet, the filter box, the exhaust filter, the air disc and the high alcohol, double-layer filtration of exhausted air is achieved, air can be exhausted into the reducing pipe through operation of the exhaust fan, airflow can be concentrated and pressurized through arrangement of the reducing pipe, meanwhile, the air is conveyed into the filter box, and the filtering effect is improved. The air disc divides air into a plurality of small bubbles and increases the contact area with the high-alcohol, the high-alcohol can kill bacteria in the air and adsorb particle dust and various suspended solids, then the air is conveyed into the air exhaust opening, secondary filtering is conducted when the air passes through the air exhaust filter, and the exhausted air is purified; therefore, the exhausted air does not carry germs, the environment is prevented from being polluted, and the use safety is improved.

The application provides a biological safety cabinet, which comprises a cabinet body, a fan assembly and a filter assembly. The cabinet body has a working cavity and an air flow circulation cavity. A partition member is arranged in the cabinet body and is inclined relative to the bottom wall of the cabinet body, so as to divide the air flow circulation cavity into a first circulation cavity and a second circulation cavity. The fan assembly comprises a first fan unit and a second fan unit. The cabinet body is provided with an air outlet and an air inlet. The first fan unit is configured to drive the circulation of the gas in the air flow circulation cavity. The second fan unit is configured to provide a negative pressure for the working cavity. The first fan unit comprises a first bellows. The filter assembly comprises a first filter member. The side wall of the first bellows towards the partition member has an extension direction consistent with the inclination direction of the partition member. The first bellows is rotationally connected with the partition member, so as to mount the first filter member between the air outlet and the first bellows. The biological safety cabinet has different levels of biological safety protection and is convenient to assemble.

The utility model discloses a biosafety cabinet with a dust cover, which comprises positioning support blocks fixedly connected to the left side and the right side of the biosafety cabinet, the surfaces of the two positioning support blocks are rotatably connected with positioning connecting pieces, and the dust cover is fixedly connected between the two positioning connecting pieces. The left side of the dust cover is fixedly connected with a thickened connecting block, the rear side of the thickened connecting block is welded with a round head plate, the left side of the biological safety cabinet is fixedly connected with a perforated L-shaped plate through a bolt, and an inner cavity of the perforated L-shaped plate is slidably connected with a round rod. The dust cover pushes the round rod to slide backwards, then the resilience force of the spring pushes the round rod and the inclined surface block to reset, and then the positions of the round head plate and the dust cover are fixed, so that the purpose that the operation window is subjected to dust prevention treatment before and after use, and the interior of the biological safety cabinet can be better kept in a clean state can be achieved.

The application belongs to the technical field of experimental equipment, and particularly relates to a biological safety cabinet. The application aims to solve the problem that the biological safety cabinet can only meet single experimental requirements and needs to be configured with multiple types of biological safety cabinets. The biological safety cabinet of the application has the following advantages. Part of the gas in the working area enters the circulating air duct through the air inlet and enters the working area again through the air outlet, and is recycled, which is conducive to reducing power consumption. Another part of the gas in the working area enters the exhaust air duct through the air inlet and is discharged through the indoor air outlet or the outdoor air outlet. When the outdoor air outlet is used for air exhaust, it is suitable for experiments of harmful chemical gas, chemical volatile gas and the like. When the indoor air outlet is used for air exhaust, it is conducive to improving the cleanliness of the air of the first workbench area and is suitable for standard microorganism experiments and the like. The biological safety cabinet of the application has low power consumption, is suitable for experiments with different requirements, and has a wide application range.

Relates to the field of safety cabinets, and discloses a biological safety cabinet with a steel wire rope anti-falling device, which comprises a safety cabinet, a box door movably arranged on the safety cabinet, a steel wire rope arranged at the upper end of the box door and a balancing weight arranged on the rear side of the safety cabinet and connected with the steel wire rope. The guide wheel device is arranged at the upper part of the safety cabinet, is connected with the steel wire rope and is used for guiding the steel wire rope; the guide wheel box is arranged at the upper end of the safety cabinet and used for protecting the guide wheel device; according to the guide wheel device for the biological safety cabinet, the steel wire rope is effectively prevented from loosening or falling off from the guide wheel device in the using process, and therefore the operation safety of the biological safety cabinet is remarkably improved.

The invention relates to the technical field of biological laboratory automatic treatment, and discloses a double-fan biological safety cabinet which comprises a cabinet body, an inner container is arranged below the cabinet body, a pressure inlet cavity and a negative pressure cavity are formed in the upper portion of the cabinet body, the pressure inlet cavity is communicated to an upper air inlet of the inner container through a lower efficient filter, and the negative pressure cavity is communicated to a lower air outlet of the inner container through a lower efficient filter. A side cavity is formed between the rear side edge of the inner container and the cabinet body, the bottom of the side cavity is communicated to the interior of the inner container through side discharging holes in the lower portion of the inner container, a first centrifugal fan and a second centrifugal fan are arranged in the negative pressure cavity, and air inlets of the first centrifugal fan and the second centrifugal fan are both located in the negative pressure cavity. An air outlet of the first centrifugal fan is located in the pressure inlet cavity, and an air outlet of the second centrifugal fan is communicated to the outside of the cabinet body through an upper efficient filter above the cabinet body. Positive pressure is generated through the pressure inlet cavity, negative pressure is generated through the negative pressure cavity, circulating air is formed in the inner container, and accurate adjustment of the negative pressure in the inner container is achieved through the two centrifugal fans.

This invention discloses a biosafety cabinet with an ultraviolet (UV) disinfection lamp, comprising a cabinet body and an air filtration device disposed above the cabinet body. Below the air filtration device is a working area. A sliding window is provided on the front side of the cabinet body. The key feature is that an UV lamp device is provided within the working area. The UV lamp device includes a flip-up plate, a traction mechanism, and a mounting compartment. A partition chamber is provided between the inner side panel of the working area and the back panel of the cabinet body. The mounting compartment is located within the partition chamber, with one end hinged to the inner side panel via the flip-up plate, and the other end connected to the sliding window via the traction mechanism. The UV lamp is disposed within the mounting compartment and gains the freedom to rotate from the partition chamber to the working area through the rotation of the flip-up plate. In this invention, the UV lamp switches between the partition chamber and the working area via the mounting compartment, avoiding interference with airflow and improving the safety of UV disinfection.

The utility model relates to the technical field of biosafety cabinets, in particular to an air supply device and a biosafety cabinet, the air supply device comprises a static pressure box, a filter plate and a first fan, the static pressure box comprises a box body, the lower end of the box body is provided with a downward air outlet, and the filter plate is connected to the lower end of the box body to block the air outlet; the first fan is fixed to the outer side of the box body, an air outlet of the first fan is communicated with an inner cavity of the box body, the air outlet faces the filter plate and is obliquely arranged downwards, the first fan is arranged on one side of the static pressure box, the total height of the air supply device is reduced, and the air outlet of the fan faces the filter plate and is obliquely arranged downwards. According to the filter plate, air blown out of the fan can be obliquely blown to the upper end face of the filter plate, compared with the mode that the air outlet is perpendicular to the filter plate, the direct contact area of the air blown out of the fan and the filter plate is increased through the obliquely-arranged air outlet, and the filtering efficiency of the filter plate is conveniently improved.

The utility model relates to the technical field of biological experiment instruments, in particular to a hanging accessory used in the separation process of umbilical cord blood hematopoietic stem cells, which is mainly used for being connected with a grid at the top of a biological safety cabinet and comprises a fixed end connected with the grid at the top of the biological safety cabinet, and a hook used for being connected with a blood bag is arranged below the fixed end. The fixing end comprises a clamping ring, a torsional spring clamping opening capable of being clamped into a grid is formed in the clamping ring, a limiting sliding groove is formed in the inner side of the clamping ring, and a limiting rod capable of moving up and down along the inner wall of the clamping ring is slidably connected into the limiting sliding groove. A reset spring capable of resetting the limiting rod upwards is arranged between the bottom of the limiting sliding groove and the limiting rod. The technical problems that in the prior art, a blood bag is connected with a grid in a biological safety cabinet through a paper clip, then the blood bag is hung, shaking is large, the blood bag is prone to falling off, a sample possibly needs to be centrifuged many times, and the motility rate of the sample is affected are solved.

The application discloses a biosafety cabinet high-efficiency filter replacement operation method and relates to the technical field of biosafety cabinets.The existing filter purifies air through filtration, so as to ensure the cleanness of the biosafety cabinet.However, the filter needs to be replaced when the purification effect is poor, and the filter needs to be replaced for a period of time, so that the high replacement frequency brings inconvenience to the use of the biosafety cabinet.The application purifies air through the arrangement of different cover plates in sequence, and the dust in the air is removed during the purification.However, bacteria and other microorganisms are accompanied in the dust and other impurities, and the pre-treatment of the bacteria and microorganisms can avoid the delivery into the biosafety cabinet, so that the cleanness of the biosafety cabinet is ensured.The replacement of the biosafety cabinet filter is usually because the ideal filtering effect cannot be achieved, so that the filter needs to be replaced, the filtering effect is improved, the filter life is prolonged, the replacement operation frequency is reduced, and the operation is relatively more convenient.

The utility model relates to the technical field of PCR (Polymerase Chain Reaction) inspection, and discloses a biological safety cabinet for PCR inspection, which comprises a safety cabinet body, a plurality of transverse storage cavities are distributed in the safety cabinet body at equal intervals, a longitudinal conveying channel is longitudinally arranged in the safety cabinet body, and the transverse storage cavities are communicated with the longitudinal conveying channel. The interior of the longitudinal conveying channel communicates with the interiors of the transverse storage cavities, an opening is formed in one end of the longitudinal conveying channel, the opening of the longitudinal conveying channel is formed in the exterior of the safety cabinet body, and a driving assembly is installed in the longitudinal conveying channel; a conveyor connected with the driving assembly is movably mounted in the longitudinal conveying channel, an ultraviolet lamp is mounted in the conveyor, a to-be-detected container is placed in the conveyor, and the ultraviolet lamp is mounted in the conveyor, so that air entering the conveyor and the surface of the container can be sterilized; and bacteria are prevented from entering the safety cabinet body.

The invention provides a gonococcus transport and preservation method, which comprises the following steps: step 1, taking out one strain which is not freeze-dried from an ultralow-temperature refrigerator, placing the strain at room temperature for later use, after the strain is slightly dissolved, taking out a certain amount of bacterial liquid from a biosafety cabinet by using a pipettor, inoculating the bacterial liquid onto a pre-heated culture medium, marking lines in four regions, and then placing the culture medium in an incubator with a candle jar or a CO2 incubator at 36 DEG C for culturing for 36 hours; 2, picking pure bacteria in a biosafety cabinet by using a disposable inoculating loop, inoculating the pure bacteria to a pre-heated culture medium, and placing the culture medium in a 36-DEG C incubator with a candle jar or a CO2 incubator for culturing for 24 hours; and step 3, taking one sterile glass test tube, adding 1mL of sterilized normal saline, scraping bacterial lawn by using a disposable inoculating loop, grinding along the tube wall, putting on a vortex device, sufficiently and uniformly mixing, and adding into sterilized skim milk. The strain is subjected to freeze-drying preservation through a vacuum freeze-drying technology, so that energy expenditure for preservation of gonococcus is saved, and benefits are brought to distribution of national gonococcus interventricular quality assessment substances and transportation of national gonococcus drug-resistant monitoring point specimens.

The application belongs to the technical field of experimental equipment, and particularly relates to a biological safety cabinet system. The application aims to solve the problem that the instability of pressure in the existing laboratory affects the experiment in the biological safety cabinet. When the biological safety cabinet system is in the first mode, part of the gas in the safety cabinet body is discharged to the room through the exhaust device, and the other part circulates in the safety cabinet body; the air supply device is configured to be closed; when the system is in the third mode, part of the gas in the safety cabinet body is discharged to the outside through the exhaust device, and the other part circulates in the safety cabinet body; when the system is in the second mode, the gas in the safety cabinet body is discharged to the outside through the exhaust device. In the third mode and the second mode, the air supply device is configured to be started to make the air pressure in the room meet the preset pressure. Through the above setting, the air supply device and the exhaust device are linked to meet the indoor pressure requirement, and the air supply device and the exhaust device have no time difference in action, which is beneficial to improving the stability of the indoor pressure in the laboratory.

The utility model relates to the technical field of biological safety cabinets, and discloses a biological safety cabinet for sample preserving fluid, which comprises a cabinet body, a ventilation component arranged at the top of the cabinet body, an opening arranged on the front side of the cabinet body, an operation component arranged inside the cabinet body, a limiting component arranged on one side of the bottom of the cabinet body, and a control component arranged on the other side of the cabinet body. A support is fixedly connected to the bottom of the cabinet body, a filter is fixedly installed in the cabinet body, the operation assembly comprises a damping column, the bottom of the damping column is fixedly connected to the interior of the cabinet body, a supporting plate is fixedly connected to the top of the damping column, a working platform is placed on the top of the supporting plate, and a first glass door is installed at an opening of the cabinet body. The bottom of the first glass door is rotationally connected with a second glass door, and the bottom of the second glass door is fixedly connected with a supporting rod. According to the utility model, by operating the assembly device, the fatigue of the arm is reduced, meanwhile, the visual operation at a short distance can be realized, and the detailed reaction of observing a sample can be clearer.

This utility model discloses a biosafety cabinet, including a cabinet body, an air filtration mechanism, and a sample feeding mechanism. The bottom of the cabinet body is equipped with an electric lifting support, and the inner bottom of the cabinet body has a worktable. The top of the cabinet body has an exhaust port. The air filtration mechanism includes a main air pipe and a branch air pipe. An intake fan is located at the other end of the main air pipe, and a valve is located inside the branch air pipe. The sample feeding mechanism includes a protective cover, and a slide rail is fixed to the inner side wall of the protective cover. A slider is slidably connected to the slide rail, and a sample box is fixed to the slider. This biosafety cabinet features an advanced design, compact structure, and ease of use. It reduces airflow disturbance, prevents the escape of contaminant particles, allows for adjustable ventilation environments for different experimental samples, and allows for height adjustment of the cabinet body, thus accommodating users of different heights at the operating opening.

The application relates to the technical field of biosafety equipment control, and particularly provides a biosafety cabinet constant air volume intelligent control method and system, aiming to solve the technical problem of error control of an existing scheme under a shielding working condition. To this end, the biosafety cabinet constant air volume intelligent control method comprises the following steps: collecting an operation state signal of a biosafety cabinet; determining a multi-dimensional state feature vector based on the operation state signal; obtaining a working condition judgment result based on the state feature vector; and controlling the biosafety cabinet to maintain a constant working area air volume based on the working condition judgment result. In this way, the shielding working condition of the biosafety cabinet can be accurately identified without adding additional hardware sensors, so that low-cost constant air volume intelligent control is realized.

The utility model discloses a secondary biological safety cabinet which comprises a safety cabinet body, a storage cabin and a disinfection cabin are arranged in the safety cabinet body, a partition plate is inserted in the safety cabinet body and located between the storage cabin and the disinfection cabin, a movable frame is assembled in the storage cabin, and opening and closing doors are assembled on the front side walls of the storage cabin and the disinfection cabin respectively. And a disinfection mechanism is fixedly assembled in the disinfection cabin. According to the culture dish disinfection device, disinfection liquid is more uniformly distributed on the surface of a culture dish, the disinfection effect on the culture dish is improved, the culture dish can be independently disinfected, the situation that the preservation environment in the preservation cabin is affected due to cross contamination in the preservation cabin is avoided, and meanwhile compared with manual disinfection of the culture dish, the disinfection efficiency is greatly improved. By adopting the culture dish disinfection device, the culture dishes can be disinfected before being put into the preservation cabin and after being taken out of the preservation cabin, the operation is simpler and more convenient, and the disinfection efficiency of the culture dishes is improved.

Relates to the field of safety cabinets, and discloses a biological safety cabinet workbench convenient to clean, which comprises a safety cabinet, a box door arranged on one side of the safety cabinet and a workbench arranged in the safety cabinet, and further comprises a supporting device arranged in the safety cabinet and used for supporting the workbench; the adjusting device is arranged on the side, close to the box door, of the lower end of the supporting device and used for adjusting the mounting angle of the workbench; the cleaning device is arranged at the lower end of the adjusting device and used for cleaning the lower end of the workbench, the cleaning steps of the workbench are simplified, the working efficiency of workbench cleaning is improved, meanwhile, the hygienic standard of the workbench is guaranteed, and experiments or work can be conducted smoothly.

The present invention provides an air flow filter device for a biological safety cabinet, which relates to the field of air filtering equipment and comprises an air duct housing, wherein foldable filter screens are fixedly installed on the left and right sides of the inner wall of the air duct housing, wherein the foldable filter screens are formed by connecting a plurality of W-shaped filter screens, and a V-shaped connecting end is provided at the connection between two adjacent W-shaped filter screens on the left and right sides, and wedge blocks are provided on the inner sides of the V-shaped connecting ends on the left and right sides, and the wedge blocks drive the V-shaped connecting ends on the left and right sides to move left and right. When the wedge blocks on the left and right sides move relative to each other, they can drive the V-shaped connecting ends in contact with them to move relative to each other, so that the angle of the V-shaped connecting ends changes, thereby expanding or contracting each W-shaped filter screen, thereby changing the projected area of ​​each W-shaped filter screen and the air flow in the air duct housing, and adjusting the filtering efficiency of the foldable filter screen.

The utility model discloses a biological safety cabinet for storing samples, which belongs to the field of biological safety cabinets and comprises a cabinet body provided with an inner cavity. The connecting plate and the supporting elastic piece are arranged on the ozone generator, the ozone generator is mounted by matching the mounting structure with the connecting plate, and the ozone generator is mounted in a hanging and abutting manner, so that the ozone generator is extremely convenient to mount or dismount and can be mounted or dismounted without operating a plurality of screws; the operation is flexible and convenient, the time and labor are saved, the stud in the insertion pipe is connected in the screw hole, the abutting effect on the connecting plate can be adjusted, the use adaptability is higher, the filter is externally arranged outside the cabinet body, the disassembly and maintenance work is convenient to carry out, the mounting frame is connected in the insertion groove and makes contact with the elastic sealing strip, and the installation is convenient. And the installation part of the whole filter can be ensured to have good sealing performance, air is ensured to only circulate through the filter element between the frames, and the air purification effect is ensured.

The utility model relates to the technical field of biosafety cabinets, in particular to a biosafety cabinet convenient to clean, which comprises a cabinet body, four vertexes in the cabinet body are respectively connected with a sliding groove or a limiting groove extending along the vertical direction, a first lead screw is rotatably connected in the sliding groove, a first sliding block is slidably connected in the sliding groove or the limiting groove, and a second lead screw is rotatably connected in the first sliding block. A cleaning assembly is connected between every two adjacent first sliding blocks. A mounting seat is connected to the top end in the cabinet body, a mounting opening is formed in the mounting seat, an electric telescopic rod is connected to the position, on the cabinet body, in the mounting opening, the movable end of the electric telescopic rod is connected with a warm air blower, a spraying pipe is connected to the mounting seat, and a plurality of spraying heads are connected to the spraying pipe. Cleaning liquid is sprayed to the inner wall of the cabinet body and the inner sides of the baffles through the spraying heads, repeated brushing is conducted through the cleaning brush, drying treatment is conducted through the fan heater after cleaning is completed, residual liquid left on the supporting plates can be manually wiped, and compared with an existing biological safety cabinet, the biological safety cabinet is convenient to clean.

The embodiment of the application provides a feedback structure and a biological safety cabinet, and relates to the technical field of feedback structures.The feedback structure comprises a cover plate, a glass window, a tactile feedback component and a visual feedback component, the cover plate is arranged on a cabinet body of the biological safety cabinet, the glass window is slidably arranged relative to the cover plate, the tactile feedback component is arranged on the cover plate, and the visual feedback component is used for being triggered by the tactile feedback component to generate visual feedback when the glass window moves to a working position.The feedback structure can move together with the glass window during use, and when the glass window moves to the working position, the tactile feedback component can trigger the visual feedback component, so that the visual feedback component generates visual feedback, and it is ensured that the glass window has reached the working position can be accurately known.The feedback structure can accurately feed back when the glass window reaches the working position, and is more accurate and convenient to use.

The utility model discloses a biosafety cabinet for cell detection, and particularly relates to the technical field of biosafety cabinets, the biosafety cabinet comprises a biosafety cabinet main body, the bottom of the biosafety cabinet main body is fixedly connected with a support frame, the front side of the biosafety cabinet main body is slidably connected with a pull plate, and the inner side of the biosafety cabinet main body is provided with an ultra-clean working cavity; a filter plate is fixedly connected above the ultra-clean working cavity, one side of the filter plate is fixedly connected with an ultraviolet lamp, and an air inlet is formed in the top of the biosafety cabinet main body. According to the utility model, the expanding mechanism and the supporting mechanism are arranged, so that the placing space in the ultra-clean working cavity can be expanded, containers of different models can be stably clamped and placed, the sample containers are prevented from toppling over, and the safety of cell sample detection is improved; the movement of the safety cabinet is assisted, and the fitting degree of the four corners of the safety cabinet and the ground is adjusted, so that the safety cabinet is placed more stably, the use safety of the safety cabinet is further enhanced, and the toppling risk caused by misoperation or external force is reduced.

The invention discloses a biosafety cabinet with an ultraviolet disinfection lamp, which comprises a cabinet body and an air filtering device arranged above the cabinet body, a working area is arranged below the air filtering device, and a movable window is arranged on the front side of the cabinet body, and is characterized in that an ultraviolet lamp device is arranged in the working area; the ultraviolet lamp device comprises a turnover plate, a traction mechanism and a mounting bin, a partition cavity is formed between an inner side plate of the working area and a back plate of the cabinet body, the mounting bin is located in the partition cavity, one end of the mounting bin is hinged to the inner side plate through the turnover plate, and the other end of the mounting bin is connected with the movable window through the traction mechanism; the ultraviolet lamp is arranged in the mounting bin, and the degree of freedom of rotation from the interval cavity to the working area is obtained through rotation of the turnover plate. The ultraviolet lamp is switched between the interval cavity and the working area through the mounting bin, interference of the ultraviolet lamp on airflow is avoided, and the safety of ultraviolet light disinfection is improved.

This application relates to the field of biosafety cabinet technology, and discloses a biosafety cabinet including an exhaust box, an exhaust filter, a first exhaust fan, a second exhaust fan, a first check valve, and a second check valve. The exhaust box includes a first air inlet connected to the first exhaust fan, a second air inlet connected to the second exhaust fan, and an air outlet equipped with an exhaust filter. The first check valve is installed at the first air inlet; the second check valve is installed at the second air inlet. When the first exhaust fan is working normally, under the airflow of the first exhaust fan, the first check valve opens and the second check valve closes, and the second exhaust fan shuts down. When the first exhaust fan is in a faulty state, the first check valve closes, the second exhaust fan starts, and the second check valve opens. This disclosure allows the second exhaust fan to operate after the first exhaust fan fails, enabling gas to be discharged through the exhaust filter to prevent airflow leakage from the work area. This application also discloses a control method for a biosafety cabinet.

The embodiment of the utility model provides a biological safety cabinet wiping device with an extension mechanism, and relates to the technical field of biological experiment equipment. The biosafety cabinet wiping device with the extension mechanism comprises a mounting frame, an auxiliary frame is arranged below the mounting frame, a connecting frame is arranged in the middle of the auxiliary frame, the extension mechanism is arranged in the connecting frame, and a spraying mechanism is fixedly mounted on the back face of the connecting frame. According to the embodiment of the invention, in the adjusting unit of the extension mechanism, a second driving motor and a second threaded rod can control up-down movement of a lifting sliding block, so that the height of a wiping rod is accurately adjusted; in the extension unit, a driving motor III can drive a wiping rod to extend out or retract in a limiting frame, so that the wiping length is flexibly adjusted. Therefore, the device can easily touch deep, far or different-height positions in the biosafety cabinet, the problem that a traditional wiping device is difficult to reach a specific area is solved, and the wiping comprehensiveness and the cleaning effect are effectively improved.

The application belongs to the technical field of experimental equipment, and particularly relates to a biological safety cabinet. The application aims to solve the problems of large installation space and high cost caused by the need to configure two types of biological safety cabinets in the existing laboratory. The biological safety cabinet has three working modes, i.e., a first mode, a second mode and a third mode. The controller is configured to determine the target mode of the biological safety cabinet according to the mode selection instruction input by the user. The controller is further configured to control the biological safety cabinet to switch from the preset default mode to the target mode or from the current mode to the target mode. In this way, the biological safety cabinet has different working modes to adapt to different experimental requirements, thereby improving the application range of the biological safety cabinet. The laboratory does not need to configure two devices, which is conducive to reducing the installation space and reducing the cost. Moreover, the biological safety cabinet is provided with a default mode, and the switching mode is simpler and more effective, thereby avoiding the problem of gas overflow in the switching process.

The invention discloses a doctor's advice distribution method and device, electronic equipment and a storage medium, and the method comprises the following steps: obtaining a plurality of doctor's advices needing to be completed, and the time for each planned medication, the time for allocation and the time for delivery of logistics in a hospital; generating the latest deployment start time and the latest deployment completion time corresponding to each doctor's advice; dividing the operation time into a plurality of end-to-end adjacent time windows, obtaining a target time window in which the latest deployment starting time of each doctor's advice falls, and adding the doctor's advice into the doctor's advice set; performing the following processing on each time window: dividing drugs into a plurality of high-risk drugs and a plurality of non-high-risk drugs, and dividing all the non-high-risk drugs into a plurality of compatibility sets; all high-risk drugs correspond to a biological safety cabinet, and each compatibility set corresponds to different workbenches. Therefore, medical advice distribution is completed.

The invention discloses a biosafety cabinet detector, and relates to the technical field of biosafety cabinets, the biosafety cabinet detector comprises a biosafety cabinet assembly, and the interior of the biosafety cabinet assembly is provided with an emergency protection assembly, an emergency suction assembly and a microbiological detection assembly. When the emergency air blower is used, air is conveyed into the air inlet cavity through the emergency air blower, vertical air flow is blown out downwards through the air blowing pipe, an air screen is rapidly formed, and polluted air is prevented from leaking in the first time. Meanwhile, a trigger alarm is started to remind workers to leave, and then a forward and reverse motor is triggered to drive the arc-shaped protection plate to rotate out. The emergency suction fan sucks air into the cabinet body through the air suction port, and the exhaust fan sucks the air into the second filter box body for treatment. And then the multi-stage electric push rod pushes the front window to move downwards for closing, vertical airflow screen blocking is formed, emergency air suction and closed-loop air purification are combined, finally, physical closing is ended, and the safety is effectively improved.

The invention relates to a visual correction method for biosafety cabinet operation training. The method comprises the following steps: establishing a biosafety cabinet body coordinate system and dividing the biosafety cabinet body coordinate system into a clean area, an operation area, a waste area and a restricted area; establishing a standard comparison model containing an action type, an object type, an allowable area and attitude constraint based on a standard operation instruction; collecting an operation process and generating an action event sequence on a unified time axis; and matching the action event with a standard comparison model item by item, and triggering visual warning and voice prompt when deviation exists. Further, a visual identification device, an inertial measurement unit and a depth / distance sensing device are adopted for synchronous fusion, and event confidence is output; space, attitude and time tolerance levels are introduced to reduce false alarms; according to the method, the SOP steps are set, scoring fields and scoring rules are set for the SOP steps, step scores and total scores are automatically calculated, and a traceable report is generated, so that the consistency and normalization of the training process are improved, and the biological safety risk caused by operation deviation is reduced.