SU1228922A1 - Production line for applying coatings on elongated articles - Google Patents

Description

The invention relates to devices for coating the surface of products and can be used for pretreatment and coating of the surface of long articles.

The aim of the invention is to reduce the metal and energy intensity of the line when coating a cylindrical shape.

FIG. 1 shows a continuous flow line for coating.

section

one; one;

one;

one;

by 1; on on on on on

products; in fig. 2 - FIG. one; in fig. 3 shows the node I in FIG. in fig. 4 — node II in FIG. FIG. 5 is a section BB in FIG. FIG. 6 shows a section B-B in FIG. FIG. 7 is a cross-section of the FIG. FIG. 8 is a section DD in FIG. FIG. 9 is a section of the EE of FIG. one.

The continuous coating line for long products includes in-line pretreatment chambers 1 and blowing 2, a coating unit 3, a drying and cooling chambers 4 and transporting means.

The chambers 1, 2, 4 and 5 are cylindrical in shape, and the conveying means is made for each chamber in the form of two drive chains 6 and 7, the working arms of which are laid on the guides 8 and 9 with the possibility of sliding.

The pretreatment chamber 1 has spray jet nozzles 10 installed evenly around the perimeter of the chamber, rotatable in the vertical plane, and openings in the lower part for suction of the vapor-air mixture. The blower chambers 2 and cooling 5 have evenly distributed air supply holes along the length and air intake ports on the opposite side.

The coating unit 3 has turning arms 11 with sprays 12 and 13 and a drive 14. The coating unit 3 is enclosed by a screen 15 in the form of a conveyor belt, kinematically connected to the drive 16.

The bottom of the screen 15 is located in the solvent tank 17 and has a cleaning device 18.

The drying chamber 4 has tangentially located nozzles 19 for supplying coolant. Lini has a loading position 20 and a discharge position 21.

Flow line works as follows.

The product is installed on the working branches of chains 6 and 7 at position 20 and afterwards.

five

0

five

0

five

0

five

0

is introduced by transporting the pre-treatment chamber 1, where the product is sprayed through the nozzles 10. The steam-air mixture is removed from the chamber 1 through the bottom openings.

In the blower chamber 2, the product is treated with recirculated air streams and further purified. Next, the conveying means cantilever feeds the product to the coating unit 3. The brackets 11 move the nozzles 12 and 13 around and ensure uniform coating over the entire surface.

A part of the sprayed material of the coating, not falling on the product, is deposited on the walls of the screen 15, which is driven by the drum 16 as necessary. The passage through the cleaning device 18 and the solvent in the tank 17, the coating deposited on the screen is removed and after regeneration . After coating in unit 3, the product enters the drying chamber 4, where the heat transfer and heating of the coating occur under the action of heat transfer fluid.

In chamber 5, the product is cooled with recirculated air and then removed from position at 21 to the conveyor.

The proposed design of the production line for coating on lengthy products and, such as a screw, makes it possible to use as pipes for cameras chambers produced by the industry, together with the simplest longitudinal stiffeners that serve as the basis for mounting the conveyor device, which provides the required structural rigidity throughout lines in general. Its low weight and compactness in comparison with the well-known tines make it possible to mount it under the bottom of the floor forms with fastening on the brackets of the building columns, on the suspensions directly to the bottom of the ceiling joints or on separate supports together with other types of productions.

The presence of a minimum gap between the outer diameter of the screw and the inner wall of the chamber allows the use of turns of the screw for intensively blowing the product with hot (at the drying position) or cold (at the cooling positions) air, as well as applying a thermal radiation effect at the drying position high temperature heating k.mery that allows to reduce heat loss and energy consumption.

I

I

four

FIG. five

e, in

FIG. 9

Claims (2)

1. A FLOW LINE FOR COATING LONG-DIMENSIONAL PRODUCTS, including pre-treatment and blowing chambers installed in a line, a coating unit, drying and cooling chambers, and conveying means. In the form of vertically closed conveyors with guides located in the chambers, characterized in that in order to reduce the metal and energy consumption of the line when applying coatings to products of a cylindrical shape, the chambers are cylindrical in shape, and the conveying means for each chamber is made in the form of two drive chains, the working branches of which are laid on rails with the possibility of sliding. 2. The line along π. 1, characterized in that it is equipped with a vertically closed screen with support rollers covering the coating unit, a screen cleaning device and a solvent tank, the screen being made in the form of a conveyor belt and kinematically connected to the drive, and its lower part is placed in the tank for solvent. SU „„ 1228922