Marinating device

The utility model relates to the field of potassium chloride production, and discloses a brine mixing device which comprises a mixing box, a first ball valve is fixedly communicated with the bottom surface of the mixing box, a connecting pipe is fixed at one end of the first ball valve, a separating box is arranged below one side of the mixing box, and the connecting pipe is fixedly communicated with one side of the separating box. Two rodless air cylinders are fixed to the top face of the separation box, a scraping plate is arranged above the separation box, sliding blocks of the two rodless air cylinders are both fixed to the bottom face of the scraping plate, a pollution discharge plate is placed on the inner bottom face of the separation box, and a plurality of pollution discharge blocks are fixed to the top face of the pollution discharge plate. According to the brine filtering device, after brine is filtered, crystals in the filtering holes of the filtering plate are pushed to the top surface of the fil