Purifying and filtering device for acid liquor in oil field acidification process

The utility model relates to a purifying and filtering device for acid liquor in an oil field acidification process. Including a filter duct, the inner side wall of the filtering pipeline is fixedly connected with a drainage plate; the inner side wall of the filtering pipeline is fixedly connected with a filtering box; the outer rear wall of the filtering pipeline is fixedly connected with a motor; the output end of the motor rotationally penetrates through the rear side wall of the filtering pipeline and then is fixedly connected with a power gear; the power gear is engaged with a missing gear; a pull rope, a scrubbing brush, a traction spring and other structures are added; a plate brush is used for repeatedly cleaning the filter screen plate; impurities can be prevented from being attached to the filter screen plate so as to obtain a good cleaning effect, whether the filter screen plate is blocked or not can be judged according to the position of the floating ball by additionally arranging the fixing rod,