Uniform and lower exhaust type large-area workbench

Abstract

A uniform and lower exhaust type large-area workbench mainly comprises a lower-exhaust workbench body, a purifying device, a draught fan, a frequency converter and an air pipe. The lower-exhaust workbench body is composed of a workbench shell, a porous plate work tabletop, a triangular rectification structure, a rectification narrow seam, a rectification base plate, an elbow, a reducer pipe, the air pipe, a liquid discharging pipeline, a liquid discharging valve, an automatic control device and a flip hidden handle. By the adoption of the uniform and lower exhaust type large-area workbench, the evenness of lower exhaust can be effectively improved when the large-area workbench conducts one-side exhaust, the technological problem that when the large-area workbench is used for operation, poisonous substances cannot be effectively controlled due to one-side exhaust is solved, the concentration of the poisonous substances is effectively controlled when the large-area operation workbench isused for operation; and in this way, the occupational health of workers is protected, automatic control over an exhaust device of the large-area workbench is achieved, and the energy-saving purpose is achieved.

Description

technical field [0001] The invention relates to a large-area uniform lower-exhaust workbench, in particular to a large-area uniform lower-exhaust workbench for poison hazard protection, which belongs to the technical field of occupational disease protection. Background technique [0002] Occupational disease hazard protection is increasingly valued by employers. A large amount of toxic gas will be generated during ceramic glazing, bag-making shoe-making glue, and organic solvent deployment, which will spread to the workplace and affect the health of workers. Some ceramic glazing, bag-making shoe brushes Adhesives and organic solvents are blended using up-suction hoods to discharge poisonous substances produced during the operation. Although up-suction hoods can discharge toxic gases, the human breathing zone is located between the pollutants and the up-suction hood, that is, the downwind side of the pollutants, resulting in Although the toxins were discharged, the workers' e...

AI Technical Summary

Problems solved by technology

The traditional lower exhaust workbench has a small area, and the middle exhaust method is used to achieve uniform exhaust air on the entire workbench. Due to the large area of ​​the workbench and the limited height of the workbench for ceramic glazing, luggage shoemaking, and organic solvent preparation, only One-sided exhaust can be used to realize the exhaust and anti-virus of the workbench, which makes it impossible to use the middle and lower exhaust for exhaust, and it is difficult to achieve uniform downward exhaust of the entire large-area workbench with one-sided exhaust

When using one-sided exhaust, the wind speed of the large-area lower exhaust workbench will be too high on the side near the exhaust outlet, and there will be basically no wind on the side away from the exhaust outlet; if the exhaust air volume is increased, the large-area workbench will be close The wind speed on the side of the air outlet is too high, and the wind speed on the side away from the air outlet is too low, it is difficult to achieve the required wind speed on the side away from the air outlet, and the energy consumption is greatly increased

Since it is difficult to achieve the wind speed required for a large-area workbench away from the side of the exhaust outlet, it is difficult to effectively control the poison on the entire workbench, thereby polluting the working environment and increasing the risk of workers suffering from occupational diseases and occupational disease hazards. It is urgent to realize the use of When the air is exhausted from one side, the uniform downward exhaust air of the large-area workbench solves the problem of poison protection of the large-area workbench

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