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Biological safety cabinets generally consist of two parts: a box body and a bracket
.
The box body mainly includes the following structures: 1.
Air filtration system The air filtration system is the most important system to ensure the performance of the equipment.
It consists of a driving fan, an air duct, a circulating air filter and an external exhaust air filter
.
Its main function is to continuously make clean air enter the studio, so that the downdraft airflow (vertical airflow) in the working area is not less than 0.
3m/s, and the cleanliness in the working area is guaranteed to reach 100 grades
.
At the same time, the external exhaust flow is also purified to prevent environmental pollution
.
The core component of the system is the HEPA filter, which uses a special fireproof material as the frame, and the frame is divided into grids by corrugated aluminum sheets, which are filled with emulsified glass fiber sub-particles, and the filtration efficiency can reach 99.
99%~100%
.
The pre-filter cover or pre-filter at the air inlet allows the air to be pre-filtered and purified before entering the HEPA filter, which can prolong the service life of the HEPA filter
.
2.
External exhaust box system The external exhaust box system consists of an outer exhaust box shell, a fan and an exhaust duct
.
The external exhaust fan provides the power for exhausting the unclean air in the working room, and it is purified by the external exhaust filter to protect the samples and experimental items in the cabinet.
The air in the work area escapes to protect the operator
.
3.
Sliding front window drive system The sliding front window drive system is composed of front glass door, door motor, traction mechanism, transmission shaft and limit switch, etc.
The glass door is in the normal position
.
4.
The lighting source and UV light source are located on the inside of the glass door to ensure a certain brightness in the working room and to sterilize the table and air in the working room
.
5.
The control panel has devices such as power supply, ultraviolet lamp, lighting lamp, fan switch, and controlling the movement of the front glass door.
The main function is to set and display the system status
.
.
The box body mainly includes the following structures: 1.
Air filtration system The air filtration system is the most important system to ensure the performance of the equipment.
It consists of a driving fan, an air duct, a circulating air filter and an external exhaust air filter
.
Its main function is to continuously make clean air enter the studio, so that the downdraft airflow (vertical airflow) in the working area is not less than 0.
3m/s, and the cleanliness in the working area is guaranteed to reach 100 grades
.
At the same time, the external exhaust flow is also purified to prevent environmental pollution
.
The core component of the system is the HEPA filter, which uses a special fireproof material as the frame, and the frame is divided into grids by corrugated aluminum sheets, which are filled with emulsified glass fiber sub-particles, and the filtration efficiency can reach 99.
99%~100%
.
The pre-filter cover or pre-filter at the air inlet allows the air to be pre-filtered and purified before entering the HEPA filter, which can prolong the service life of the HEPA filter
.
2.
External exhaust box system The external exhaust box system consists of an outer exhaust box shell, a fan and an exhaust duct
.
The external exhaust fan provides the power for exhausting the unclean air in the working room, and it is purified by the external exhaust filter to protect the samples and experimental items in the cabinet.
The air in the work area escapes to protect the operator
.
3.
Sliding front window drive system The sliding front window drive system is composed of front glass door, door motor, traction mechanism, transmission shaft and limit switch, etc.
The glass door is in the normal position
.
4.
The lighting source and UV light source are located on the inside of the glass door to ensure a certain brightness in the working room and to sterilize the table and air in the working room
.
5.
The control panel has devices such as power supply, ultraviolet lamp, lighting lamp, fan switch, and controlling the movement of the front glass door.
The main function is to set and display the system status
.
