Universal exhaust hood used in laboratory

Abstract

The invention provides a universal exhaust hood used in a laboratory. The universal exhaust hood used in the laboratory comprises a lengthwise wind guide pipe and an open type wind gathering hood, wherein the wind guide pipe is provided with an exhaust outlet; an installation frame is installed at one end of the wind guide pipe; the other end of the wind guide pipe is communicated with the wind gathering hood through a connection device; the connection device is provided with an adapter pipe, a first connection pipe, a bearing pipe and a second connection pipe which are communicated in sequence; one end of the second connection pipe is in butt joint and communication with the wind gathering hood. The universal exhaust hood used in the laboratory is characterized in that the other end of the second connection pipe is connected to one end of the bearing pipe in a sleeved mode and can rotate around the axis of the bearing pipe; the other end of the bearing pipe is in butt joint and communication with one end of the first connection pipe; the other end of the first connection pipe is connected to one end of the adapter pipe in a sleeved mode and can rotate around the axis of the adapter pipe; the other end of the adapter pipe is in butt joint and communication with the wind guide pipe. As the connection device is designed to be a pipe unit assembly which can rotate and be in butt joint and communication, the wind gathering hood can rotate by 360 degrees on two planes when the first connection pipe and the second connection pipe are rotated, and the use flexibility and applicability of the whole exhaust hood are improved.

Description

technical field [0001] The invention relates to an exhaust device, in particular to a universal exhaust hood capable of 360° rotation, which is especially suitable for use in laboratories. Background technique [0002] The ventilation exhaust hood is mainly a device that uses jet flow to discharge indoor gas, heat and other harmful substances to the outside. It is one of the necessary equipment for laboratories, especially chemical laboratories. It mainly includes air collection hoods, air ducts and air flow Control valve composition. At present, most of the exhaust hoods used in the laboratory are of a one-piece structure, and the position of the air collecting hood cannot be adjusted by rotation. The installation position of the wind hood has obtained the best absorption effect, but the exhaust hood with an integrated structure cannot realize such adjustment, which brings certain inconvenience to the user. The purpose of the present invention is to provide a universal ex...

AI Technical Summary

Problems solved by technology

At present, most of the exhaust hoods used in the laboratory are of a one-piece structure, and the position of the air collecting hood cannot be adjusted by rotation. The installation position of the wind hood has obtained the best absorption effect, but the one-piece structure exhaust hood cannot realize such adjustment, which brings some inconvenience to the user

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