METHOD USED FOR FLUSHING OF PRODUCTS AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2008 - IPC B08B3/02 

FIELD: chemical industry; other industries; methods and the devices for flushing the products.

SUBSTANCE: group of inventions is pertaining to purification and preparation of the surfaces of the products for coating, in particular, to the spray flushing of the products and purification of the flushing solution for its multiple use. The method consists in the action on the products by the flushing solution and purification of the low-purity flushing solution flowing down from the purified products. The method provides for the low-purity flushing solution filtration and removal of its surface layer with pollutions by its blowing from the surface of the main volume of the flushing solution by the inclined streams of the air to the drain place. At that the surface layer with the pollutions before its drain, in the final phase of its blowing out by the air, is routed from the main volume of the flushing solution into the small volume, where its settling is exercised, after termination of which the newly formed surface pollutions are removed from the small volume by the pressure transfer at the expense of the difference of the levels of the flushing solution from the middle more pure part of the main volume of the flushing solution into the lower part of the small volume with consumption, which does not cause relocation of the draining surface pollutions of the small volume. After termination of the drain the settled surface layer from the small volume is routed into the middle part of the main volume of the flushing solution. The device used for the method implementation contains: the chamber with the located in it flushing circuits used for feeding of the flushing solution on the products; the flushing solution bath disposed under the chamber and equipped with filtering components and the pump for feeding the flushing solution into the circuits of flushing, and also the circuit of blowing of the surface layer with the pollutions equipped with the inclined nozzles and connected to the network of the compressed air and fixed on one of the bath walls; and the drain chute. The device is additionally supplied with the tank for settling of the surface layer with the pollutions and the recirculating pump. At that the bath wall, which is opposite to the wall, where the blowing circuit is installed, there is the fixed block of collection of the surface layer with the pollutions, consisting of the inclined collectors, on which there are the uniformly mounted and fixed funnels supplied with the lattice washers uniformly spaced with respect to the level of the flushing solution in the bath with the capability to be adjustable in height. The inclined collectors are connected through the T-connector and the shutoff valve with the pipe duct, which has been linked to the lower part of the tank for settling of the surface layer with pollutions, which is connected to the middle part of the bath by two pipe ducts, each of which is equipped with shut-off valve and the adjustable valve. The recirculating pump is disposed on one of these pipe ducts between the shut-off valve and the adjustable valve; its delivery fitting pipe is directed towards the bath, and the drain chute is installed on one of the walls of the tank settling of the surface layer with the pollutions.

EFFECT: group of inventions ensures improvement of quality of purification of flushing solution and flushing of products.

2 cl, 5 dwg