A kind of negative pressure weighing cover

A weighing hood and negative pressure technology, which is applied in the field of powder medicine or liquid medicine weighing technology and equipment, can solve the problems of cross-contamination, leakage from door gaps, and less than 100-level laminar flow, so as to prevent secondary The effect of pollution, improvement of air pressure, and prevention of leakage
CN104499735BActive Publication Date: 2017-03-15苏州悠远环境科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
苏州悠远环境科技有限公司
Publication Date
2017-03-15

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Abstract

The invention discloses a negative pressure weighing cover. The negative pressure weighing cover is built by splicing and assembling an aluminum profile and a composite wall and comprises an upper box body, a machine room, a lower box body, a working area, a protection area and a supervision system. The supervision system is arranged on a control panel; a primarily efficient filter and a middle efficient filter are arranged on an air returning plate of the inner side of the lower box body; a UPS is arranged on the bottom corner of the lower box body; the machine room is provided with a main fan and a direct-current fan; an efficient filer A and an efficient filter B are arranged in the upper box body; the efficient filter A is sealed through a liquid seal trough, and an air outlet of the efficient filter A is provided with a flow equalizing diaphragm plate and a high-speed wind plate; and the high-speed wind plate is communicated with a high-speed wind curtain. A buffer partition plate is arranged in the upper box body. A double-area structure of the working area and the protection area is adopted, and the vertical one-way airflow and the double-side efficient filters are utilized, so that internal circulation and partial discharge of the working area are kept, negative pressure in the working area is made to prevent cross contamination, and external environment and safety of indoor personnel are protected.
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Description

technical field

[0001] The invention relates to the field of technical equipment for weighing powdery medicine or liquid medicine, in particular to a negative pressure weighing cover. Background technique

[0002] Weighing hood is an open room specially used for pharmaceutical, microbial research and scientific experiments, etc. It is used for dust and reagent weighing and packaging. Most of the existing weighing rooms are used as weighing rooms after being cleaned by ordinary rooms. There is no corresponding air treatment system, and there is no supporting automatic control system. It is difficult to control dust, reagent spillage, rising, and pollution. Inhalation of dust and reagents is harmful to human health, and there is also cross-contamination of dust and reagents, which endangers the safety of the external environment and indoor personnel.

[0003] The utility model patent with the patent number "201020695956.5" discloses a weighing room, which includes a room body...

Claims

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