1. Negative pressure weighing chamber product introduction
The negative pressure weighing chamber (hood) is a local purification equipment dedicated to places such as pharmaceuticals, microbiological research and scientific experiments. It provides a vertical one-way airflow. Part of the clean air in the work area cycle, part of the discharge to the nearby area, so that the work area negative pressure. In the equipment for dust, reagents weighing, packaging, can control the dust, reagent spill, rising, to prevent dust, reagents on the human body inhalation hazards, but also to avoid dust, reagent cross-contamination, protection of the external environment.
2. Negative pressure weighing chamber working principle
The equipment is in the form of vertical unidirectional flow, and the return air is pre-filtered by the initial effect filter, and the large particles of dust particles in the air are treated. After pretreatment of the air, and then through the middle of the filter for secondary filtration, in order to play a full protection of the role of high efficiency filter. In the centrifugal fan to provide the pressure, through the high efficiency filter, to achieve clean requirements. The operating area and the formation of the external environment relative to the negative pressure, so as to ensure that the dust within this area will not spread to the outside, play a role in protecting the external environment.
3. Installation of negative pressure weighing chamber
4. Negative pressure weighing chamber structure selection
(1) This model weighing room for the commonly used facade operation type, the operating area front back to the wind, man-machine interface and button installation and equipment facade; staff standing area around the side wall partition, the specific size of the details please refer to (Table 1).
(2) This type of weighing room for the side of the operation type, the operating area front back to the wind, the staff standing area left and right side of any side can be used as man-machine interface or button installation surface; specific size please refer to (Table 2).
(3) This type of weighing room with a bag into the bag out of the replacement of the G4 effect and F8 plate in the efficiency of the structure, the operation area front return air, personnel standing area facade as the man-machine interface or button installation surface; For details, please refer to (Table 3).
5. Selection of negative pressure weighing chamber parameters
6. Negative pressure weighing chamber configuration selection
