Gas-collecting hood of acid boiling workbench

The utility model provides a gas collecting hood of an acid boiling workbench. The gas collecting hood comprises an air draft pipe and a gas collecting hood body. The exhaust pipe is connected to thetop of the gas collecting hood, and a variable-frequency fan is arranged on the exhaust air pipe; a gas content detector is arranged in the gas collecting hood and is connected to the variable-frequency fan through a PLC (Programmable Logic Controller); a movable baffle is arranged on the front portion of the gas collecting hood and composed of two leaves, and corresponding sliding rails are arranged at the top and the bottom of each leaf of movable baffle. According to the gas collecting hood, the oppositely-opened opening-closing type cabinet door structure is adopted, and the device for integrally opening the cabinet door is arranged on the gas collecting hood, so that the gas collecting hood can be adjusted in the working process according to actual conditions, and the use flexibilityof the gas collecting hood