Flow rectifier in negative-pressure weighing chamber

Abstract

The invention relates to a flow rectifier in a negative-pressure weighing chamber. The flow rectifier is installed between an air supplying box and a work area. The flow rectifier comprises a fixing frame. Flow rectifying plates are fixed to the fixing frame. A plurality of flow rectifying holes distributed in an arrayed mode are formed in the flow rectifying plates. At least two flow rectifying plates are arranged, a gap is formed between the flow rectifying plates, and the flow rectifying holes in the two adjacent flow rectifying plates are formed in a staggered mode. By means of the structure, the effects of reducing the air speed and rectifying flow can be achieved through the flow rectifying holes in the two flow rectifying plates, it is guaranteed that the air speed in the work area is consistent, operation is convenient, the structure is simple, and the production efficiency can be improved.

Description

technical field [0001] The invention relates to a device in the biomedical industry, in particular to a flow equalizing device in a negative pressure weighing chamber. Background technique [0002] In the pharmaceutical industry, the pharmaceutical process needs to meet the requirements of GMP, the weighing of raw and auxiliary materials of preparations or the sampling, weighing, mixing, packaging and other operations of dry materials or products, as well as the production of tablets, raw materials, oral preparations, etc. The workshop must meet certain cleanliness requirements in the process of weighing, mixing, sieving, granulation, tableting, capsule filling, powder filling, etc., to avoid dust flying and spreading, mixing or cross-contamination. The pressure weighing chamber works to meet the above requirements, and the existing negative pressure weighing chamber directly passes the wind into the working area at the outlet of the air supply box, which leads to different ...

AI Technical Summary

Problems solved by technology

[0002] In the pharmaceutical industry, the pharmaceutical process needs to meet the requirements of GMP, the weighing of raw and auxiliary materials of preparations or the sampling, weighing, mixing, packaging and other operations of dry materials or products, as well as the production of tablets, raw materials, oral preparations, etc. The workshop must meet certain cleanliness requirements in the process of weighing, mixing, sieving, granulation, tableting, capsule filling, powder filling, etc., to avoid dust flying and spreading, mixing or cross-contamination. The pressure weighing chamber works to meet the above requirements, and the existing negative pressure weighing chamber directly passes the wind into the working area at the outlet of the air supply box, which leads to different wind speeds in various parts of the working area, thus Lead to unsmooth work and affect production efficiency

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