Automatic quantitative coating device for laboratory bacterial liquid

The utility model belongs to the technical field of experimental equipment, and particularly relates to an automatic quantitative coating device for laboratory bacterial liquid. The device mainly comprises a device body, a propelling device and a gear motor, and the gear motor can drive a rotary table arranged on the device body to rotate so as to drive a culture dish fixed to the rotary table through a fixing block to rotate; the propelling device can quantitatively propel the liquid conveying cylinder, so that bacterial liquid in the liquid conveying cylinder is quantitatively conveyed intothe coating head through the adjusting pipe and the liquid conveying pipe; the coating head is provided with a coating roller and a liquid conveying hole and can be in rolling contact with the rotating culture dish, and the culture dish is uniformly coated with bacterial liquid in the coating head through the liquid conveying hole; an operation table is arranged on the device main body and can control the overall operatio