Operation of negative pressure weighing hood

This device adopts a vertical unidirectional airflow form, and the return air needs to be pre filtered through a primary filter to remove large dust particles in the airflow,. After pre-treatment, the air is further filtered through a medium efficiency filter to fully protect the high-efficiency filter. Under the pressure of the centrifugal fan, it is filtered through a high-efficiency filter to meet the cleanliness requirements. The clean airflow is sent into the air supply box, with 90% passing through the uniform flow air mesh plate to form a uniform vertical air supply airflow, and 10% passing through the air volume adjustment plate to be discharged from the equipment. All airflows are processed by high-efficiency filters, so there is no residual dust in the air supply and exhaust, avoiding secondary pollution. Due to the formation of a stable unidirectional flow in the work area, the dust emitted in this area will be captured by the primary and medium efficiency filters under the influence of the unidirectional airflow. The equipment is equipped with a 10% exhaust system, which creates a negative pressure relative to the external environment, ensuring to some extent that dust in this area will not spread outside and protect the external environment.

A weighing room is a local purification equipment used in places such as pharmaceuticals, microbiology, and scientific experiments. It has a vertical unidirectional airflow, with some clean air circulating in the work area and some discharged to nearby areas, creating negative pressure in the work area to prevent cross contamination and ensure a high cleanliness environment in the work area.

Weighing and packaging dust and reagents in the equipment can control the overflow and upward movement of dust and reagents, prevent the inhalation hazards of dust and reagents to the human body, and also avoid cross contamination of dust and reagents, protecting the external environment and the safety of indoor personnel.

The weighing operation area is protected by Class 1000 vertical laminar flow ISO 6 (NF, EN, ISO14644-1).

Negative pressure weighing hoodStructural features:

This equipment is assembled from several parts, including the workspace, return air box, fan box, outlet box, and outer box. The control panel is located on the front of the working area inside the equipment. The control panel adopts a touch sensitive LED control panel, which can control the start and stop of the fan, adjust the fan working conditions, and adjust the required wind speed in the working area (after the equipment is installed and used, specialized personnel need to adjust the working conditions). There is a differential pressure gauge next to it, which tests the resistance of the filter. There is also an exhaust adjustment plate inside the air supply box, which can adjust the exhaust volume of the equipment within a reasonable range (after the equipment is installed in place, it should be tested by personnel, please do not adjust it without authorization)

Product features:

1. By sinking and lowering the low negative pressure airflow, a clean and sterile local environment is created in the operating area to avoid cross contamination between different drugs

2. Effectively control the overflow and upward movement of dust and reagents, prevent the inhalation hazards of dust and reagents to the human body, avoid cross contamination of dust and reagents, and protect the safety of the external environment and indoor personnel

Three levels of filtration: primary, medium, and high-efficiency filters. The high-efficiency filter in the liquid tank meets the testing requirements of DOP or PAO

4 Polymer Uniformity Membrane Improves the Uniformity of Air Discharge

Negative pressure weighing hoodTechnical Specifications: