Novel ventilation pipe system for radically treating and dispelling backflow of condensed water of ventilation cabinet

Abstract

The invention discloses a novel ventilation pipe system for radically treating and dispelling backflow of condensed water of a ventilation cabinet. The system comprises ventilation cabinet bodies, wind sucking covers, vertical branch ventilation pipes, ventilation pipe elbows, a transverse main ventilation pipe, wind sucking cover walls, vertical branch ventilation pipe walls and ventilation pipeelbow pipe walls; pipe walls of the transverse main ventilation pipe are combined to form the novel ventilation pipe system for radically treating and dispelling backflow of the condensed water of theventilation cabinet; pipes of the ventilation pipe system are all manufactured by Si02 aerosol composite boards; the space layout is as follows: the lower ends of the wind sucking covers are connected with exhaust ports of the ventilation cabinet bodies; the upper ends of the wind sucking covers are connected with the lower ends of the vertical branch ventilation pipes; the lower ends of the ventilation pipe elbows are connected with the upper ends of the vertical branch ventilation pipes; and the upper ends of the ventilation pipe elbows are connected with the side surface of the transversemain ventilation pipe inclined in a high-inside and low-outside manner to achieve the technical effect of radically treating backflow of the condensed water through inside-outside combination.

Description

technical field [0001] This patent relates to the technical field of a digestion-type fume hood, in particular to a new type of ventilation pipe system that can radically eliminate the reflux of condensed water in a digestion fume hood. Background technique [0002] This application is developed on the basis of "A Purification and Recovery System for Condensed Wastewater in Digestive Fume Hood" (Patent No. 2016110129681). Digestive fume hood, also known as digestion fume hood, or clean gas fume hood, is a special fume hood for heating and digesting organic matter with inorganic acid solution. Before entering the fan, water vapor encounters cold on the pipe wall, transforms into liquid condensed waste water, returns along the pipe wall and flows into the suction port, causing secondary pollution of the fume hood to varying degrees; therefore, it must be treated, but the existing treatment methods and devices are not It is aimed at the treatment of condensed wastewater after ...

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Problems solved by technology

[0004] Accordingly, the technical problem to be solved in this patent is: starting from the internal and external causes of the condensed water backflow in the ventilation pipe of the waste gas discharged from the digestion fume hood, and prescribing the right medicine, using a silica airgel composite material with a thermal conductivity smaller than the waste gas Make ventilation pipes to eliminate the phenomenon of condensation conversion of water molecules from gaseous phase to liquid water due to temperature drop when the exhaust gas flows through the pipe wall. The backflow phenomenon of the fume hood, through internal and external means, achieves the technical effect of radically eliminating the reflux of condensed water in the fume hood;

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