Ventilation hood with safe movable protection window

Abstract

The invention provides a ventilation hood with a safe movable protection window. The ventilation hood comprises a ventilation hood box provided with a cavity with an opened end, a front face operation pull window arranged on the ventilation hood box and provided with first through holes, reinforcing plates arranged on the parts, surrounding the first through holes, on the inner surface and the outer surface of the front face operation pull window, movable plates arranged on the reinforcing plates on the inner surface of the front face operation pull window, and connecting knobs. The reinforcing plates are provided with second penetrating through holes, the movable plate is provided with third through holes, the connecting knobs penetrate through the second through holes to be connected with the connecting plates, and the position of the movable plate is adjusted by adjusting the connecting knobs so that the third through holes can correspond to the first through holes. By means of the ventilation hood with the safe movable protection window, the front face operation pull window of the box can be completely closed to maintain complete isolation of an experimental area and the human body except the hands in an experiment, when an explosion occurs in the experiment, the ventilation hood can buffer explosion impacts, impact force and splashing toxic and harmful matter generated by the explosion can be blocked, experiment personnel can be better protected, and thus deadly injury is not likely to occur.

Description

technical field [0001] The invention belongs to the field of mechanical equipment manufacturing, and in particular relates to a safety activity protection window type fume hood. Background technique [0002] A fume hood (or fume hood) is a large-scale equipment in a laboratory, especially a biochemical laboratory. Its purpose is to reduce the exposure of experimenters and harmful gases. The safety activity protection window type fume hood is the primary barrier to protect personnel from the hazards of toxic chemical fumes. It can be used as an important safety back-up equipment, such as when the chemical experiment process fails, and when chemical smoke, dust and toxic gases are generated, it can effectively discharge harmful gases to protect the staff and the laboratory environment. [0003] At present, there are various types of fume hoods, many of which are claimed to have the function of safety isolation and protection, but their protection is basically achieved by pull...

AI Technical Summary

Problems solved by technology

[0003] At present, there are various types of fume hoods, many of which are claimed to have the function of safety isolation and protection, but their protection is basically achieved by pulling down the operation of the fume hood and pulling the window to a certain height to ensure that the experimenter can operate the body parts above the window and the experimental site Isolation, but the body parts below the operation window cannot be isolated, so the existing fume hoods on the market still have potential safety hazards and still need to be improved and perfected

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