Injection production filtering device

The utility model relates to the technical field of filtering devices, and discloses an injection production filtering device which comprises a filtering barrel and supporting legs, a discharging pipe is fixedly installed at the bottom end of the filtering barrel, a notch is formed in the outer surface of the discharging pipe, a cover plate is rotatably installed on one side edge of the notch, and the supporting legs are fixedly installed on the filtering barrel. A filter plate is fixedly mounted on the inner wall, close to the bottom end, of the cover plate. An operator manually loosens a fastening nut of a butterfly bolt and then manually rotates the cover plate to open the cover plate, the filter plate is exposed through rotation of the cover plate, at the moment, the operator replaces a filter element on the surface of the filter plate, and the cover plate and the discharging pipe are locked after replacement is completed. According to the device, when the filter element is replaced, the operation process