DEVICE FOR CLEANING PRODUCTS FROM HARD COATINGS AND SALT DEPOSITS (OPTIONS) Russian patent published in 2023 - IPC B08B9/00 E21B37/00 

FIELD: material processing.

SUBSTANCE: method for electrohydraulic processing of materials by electric discharges in a liquid, in particular, cleaning products from hard coatings and deposits in pipes, tanks and castings. A device for cleaning products from hard coatings and salt deposits contains a bath filled with water for setting products, a power unit containing a transformer-rectifier, the inputs of which are connected to a power source, and a storage capacitor is connected in parallel to the outputs, one terminal of which is grounded. The device contains a coaxial cable with a screen braid connected to a grounded terminal of the storage capacitor, and the central conductor of the cable is connected through a static discharger to another terminal of the storage capacitor. The other end of the cable is connected by a screen braid to the body of the discharge head. The central core with insulation is a high-voltage electrode and is located along the central axis of the internal cavity of the discharge head. The discharge head has an upper part of a cylindrical shape with an open internal cavity and a lower part in the form of a half-cylinder with a stepped groove made in it, the diameters of which correspond to the screen braid and the outer sheath of the cable. The coaxial cable is connected to the head using two semi-rings. The upper semi-ring serves as a retainer for the screen braid, which is in contact with the head body through a sealing electrically conductive gasket, and the lower semi-ring serves as a retainer for the outer sheath of the cable. The central core with insulation is installed in the open inner cavity of the upper part of the discharge head without the possibility of contact with its body. According to the second embodiment of the device, through cutouts are made in the side walls of the upper part of the discharge head housing.

EFFECT: increase in the efficiency of cleaning of rejected coatings for subsequent reuse of products, as well as an increase in the service life of the discharge electrode assembly while increasing the efficiency of energy transfer during discharge.

4 cl, 3 dwg