RU47775U1 - DEVICE FOR ELECTROSTATIC SPRAYING OF POLYMER COATINGS - Google Patents

Abstract

The invention relates to the design of devices for applying polymer coatings to products in an electric field. The device comprises a working tank 1 with a charging plate 2, an inclined vibrating bottom 3, an electromagnetic vibrator 4. The working tank with a shutter 5 is divided into two chambers: the spraying chamber A and the makeup chamber B. the chambers A and B communicate with each other by means of an adjustable slot 6 in the spraying chamber And the grounded part 8 is placed, in the inclined vibrating bottom 3 there is a window 7. The purpose of the proposed technical solution is the continuity of the coating process from unfractionated powder and the withdrawal of the remainder from the spraying chamber. The specified technical result is achieved in that the electromagnetic vibrator is installed on the rear of the make-up chamber, and not under an inclined vibrating bottom.

Description

The invention relates to the design of devices for applying polymer coatings to products in an electric field.

A device for electrostatic spraying (description of the invention to the copyright certificate No. 283551 of 06.10. 1970. Bull. No. 31).

The disadvantages of this device are partial shielding of particles not involved in the spraying process and accumulated in the spraying chamber. In addition, during the operation of the electromagnetic vibrator, in the vicinity of the exit window, the effect of delay and accumulation of polymer particles occurs, leading to a slowdown of the spraying process.

The objective of the proposed technical solution is the continuity of the coating process from unfractionated powder and the withdrawal of the residue from the spraying chamber.

The specified technical result is achieved in that the electromagnetic vibrator is installed on the rear of the make-up chamber, and not under an inclined vibrating bottom.

An analysis of the proposed solution and the known ones allows us to conclude that it meets the patentability conditions of the utility model.

The technical solution is illustrated in the figure (figure 1), which shows a device for electrostatic spraying of polymer coatings.

The device contains a working tank 1 with a charging plate 2, an inclined vibrating bottom 3, an electromagnetic vibrator 4. The working tank with a shutter 5 is divided into two chambers: a spraying chamber A and a make-up chamber B. Chambers A and B communicate with each other via an adjustable slot 6. In the chamber In spraying A, a grounded part 8 is placed, and in the inclined vibrating bottom 3 there is a window 7.

The device operates as follows. When the electromagnetic vibrator 4 is operating, the polymer powder layer moves along an inclined bottom from the feed chamber B, pre-filled with material, the spraying chamber A and then to the exit window 7. The thickness of the powder layer, in contact with the movement of the charging plate 2, acquires an electric charge. Part of the powder settles on the surface of the grounded part 8 in a dense layer, from which the final coating is subsequently formed. The other part (the remainder), moving along the inclined vibrating bottom, through the outlet window 7 is removed from the spraying zone.

The device allows for a continuous coating process from unfractionated powder with automatic withdrawal from the working area of particles not involved in the spraying process, with a uniform supply of material into the spraying zone.

The constant movement of material along the charging plate helps to clean the latter from adhering particles, delay and accumulate powder

not happening. This makes it possible to keep the charging mode constant. In addition, the location of the charging plate in both chambers A and B increases the contact area of the polymer particles with the charging surface, which leads to an increase in the yield of charged particles and makes this device more efficient.

The location of the electromagnetic vibrator 4 on the rear of the make-up chamber ensures the continuity of the process of applying polymer particles to the grounded part 8.

Claims (1)

A device for electrostatic spraying of polymer coatings, consisting of a working reservoir divided by an adjustment flap into a spraying chamber and a make-up chamber with a common charging plate, an inclined bottom equipped with a window, characterized in that the electromagnetic vibrator is mounted on the back of the make-up chamber, and not under an inclined vibrating upside down.