Home  > INFO CENTER  > News  > 

Negative Pressure Weighing Room

Negative Pressure Weighing Room



Negative pressure weighing room is a kind of local purification equipment specially used in places such as pharmacy, microbial research and scientific experiment, which provides a vertical unidirectional air flow. Part of the clean air circulates in the working area, and part of it is discharged to the nearby area, causing negative pressure in the working area. Weighing and subpackaging of dust and reagent in the equipment can control the overflow and rise of dust and reagent, prevent the inhalation hazard of dust and reagent to human body, avoid the cross contamination of dust and reagent, and protect the external environment and the safety of indoor personnel

The negative pressure weighing room is composed of junior high efficiency filter, flow equalizing membrane, fan, 304 stainless steel structural system, electrical system, automatic control system, filter pressure detection system, etc.

Product advantages

The box is made of high quality SUS304 stainless steel, and the working area is designed in circular arc, without dead corners, dust accumulation and easy cleaning;

Top air supply, high efficiency filter efficiency ≥ 99.99% @ 0.3 μ m. The purification level of the operation area is higher than the cleanliness of the room;

Button controls lighting and power supply;

A differential pressure gauge is installed to monitor the use of the filter;

The modular design of box sampling can be disassembled and assembled on site;

The return air orifice plate is fixed with strong magnet, which is convenient for disassembly;

The one-way flow pattern is good, the dust does not diffuse, and the dust collection effect is good;

The isolation methods include soft curtain isolation, organic glass isolation, etc;

The filter grade can be reasonably selected according to customer requirements.

working principle

In the weighing room, the air is pressed into the static pressure box by the centrifugal fan through the primary efficiency filter and medium efficiency filter, and then diffused to the air outlet surface through the high efficiency filter to form a vertical unidirectional air flow to protect operators and prevent drug pollution. 10% - 15% of the circulating air is discharged from the operation area of the weighing hood, and the negative pressure is maintained to avoid environmental pollution and cross contamination of drugs.

Technical indicators

The air flow velocity is 0.45m/s ± 20%;

Equipped with control system;

Wind speed sensor, temperature and humidity sensor are optional;

High efficiency fan module provides clean laminar air (measured with 0.3 µ m particles) to meet the requirements of the clean room with an efficiency of 99.995%;

Filtering module: primary filter plate filter G4;

Medium efficiency filter bag filter F8;

High efficiency filter - liquid tank high efficiency filter without partition H14;

380V power supply.




Suzhou Pharma Machinery Co.,Ltd.



Chat Online
Chat Online
Chat Online inputting...
Sign in with: