Fish meal production waste gas purification device

The utility model relates to the technical field of fish meal production, in particular to a fish meal production waste gas purification device which comprises a first box body, an oil collecting tank and an induced draft fan, the induced draft fan is installed on one side of the first box body, the oil collecting tank is installed at the bottom of the first box body, and a second box body is installed at the top of the first box body through a support. A filter hopper is installed on the top wall in the first box body, a filter box is installed on the top wall in the second box body, activated carbon is arranged in the filter box, a cover plate is installed at the top end of the second box body, the draught fan introduces waste gas into the first box body, and oil molecules in the waste gas impact the filter hopper and are attached to the filter hopper. And the liquid oil drops slide down along the surface of the filter hopper, enter the filter cover and enter the oil collecting tank to be collected. 本实用新型涉及