SU1615504A1 - Installation for thermal treatment of elongated material - Google Patents

Abstract

The invention relates to a technique for heat treating a coated film material and may find application in the chemical and other industries. Improving the quality and efficiency of the process during processing of coated film material is achieved by the fact that a compartment of the vapor-air mixture is located between the heating chamber and the cooling chamber, which has horizontal partition walls 6 with cracks in common with the chambers and the outlet nozzles are asymmetrically located, while the opposite walls of the heating chamber have inclined ribs, providing a spiral motion of the vapor-air mixture. 7 il.

Description

(Ls

The invention relates to a technique for heat treating a coated film material and may find application in the chemical and other industries.

The purpose of the invention is to improve the quality and efficiency of the process when processing coated film material.

FIG. 1 shows the proposed installation, a longitudinal section; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. one; in fig. 4, section bb of FIG. 3; in fig. 5 is a section of YYD in FIG. one; in fig. 6 is a section d-d in FIG. one; in fig. 7 shows section EE of FIG. 2

The installation is intended for heat treatment of a coated film material and comprises a housing 1 in which the coating unit 2 and two vertical heating chambers 3 are placed, above which are located the suction compartments 4 of the steam-air mixture separated from the heating chambers 3 by horizontally placed partitions

5, having slots 6 for the passage of material 7. Above compartments 4 cooling chambers 8 are placed with similar horizontally arranged partitions 5 with slots 6. Above chambers 8 is a compartment 9 with swivel rollers 10. Case 1 has thermal insulation 11 and nozzles 12 and 13 air supply. Along the walls of the chambers 3 are installed heating plates 14, above which are placed the fins 15, mounted at an angle relative to the axis of the chamber. In this case, the edges on the opposite walls of each chamber are directed in different directions at equal angles with respect to the axis of the chamber (Fig. 2). Each of the compartments 4 has two nozzles 16 mounted on opposite sides of the chamber and placed asymmetrically as the exit slit 6. The nozzles 16 are connected by manifolds 17 to an air suction system (not shown). The cooling chambers 8 have connections 18 for the supply of cold air, associated with a number of SPs.

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Lecturer 19 with air supply system (e shown). In chambers 8 cooling around the entrance slit b on the partition 5 there is a frame 20 from the corner, on the longitudinal sides of which there are inclined ribs 21, installed with the possibility of adjusting their inclination by swapping screws 22 into the holes x frame- 20.

I Installation works as follows.

I The film material 7 is fed into the transmitting branch and, through the passage through the node 2, is covered with a thin layer of fluoroplastic suspension and enters the first chamber 3 of the 1-heat treatment unit. At the same time, an air flow Qi is fed into the chamber. Heaters 14 preheat the air and, accordingly, a film with a cover as they rise along the walls of the heating chamber. The air flow dilutes gaseous substances arising during the heat treatment process. Moving along re-fiep 15, i.e. at an angle to the direction of movement of the film, the heated air is redistributed, as a result of which the temperature spread across the cross section of the chamber significantly decreases. Due to the fact that the edges of the opposite sides of the chamber 3 are directed in different directions, the air flow with gases released during the drying process

It is seen as if along a broken screw line and flows around material 7 along a delightful helix. In this case, uncontrolled breakthroughs of cold air to the upper part of the chamber are excluded, heat treatment (coating substrate, sintering) is carried out in accordance with the temperature change regulations. Passing through the slit 6 in, the partition I), the film enters the compartment 4 of the air suction, from where the vapor-air mixture is beaten off through the nozzles 16, which are located asymmetrically as the exit slit, so that the spiral motion of the mixture is not excessive.

rotates, one part of the stream (on the left side of the film) goes to the left, the other

part of the stream - (on the right side of the film)

It comes out to the right (fig. 6), while the flows move in opposite directions.

Through pipe 22, chamber 8 is fed with a stream of cold air Q2, which cools the material and, passing over frame 20, passes to slot 6 in the partition 5

and is also sucked through the nozzles 16. Thus, the material (coated film) enters the compartment 9 and is cooled on the rollers 10. The chamber 8 serves not only to cool the film, but also to prevent the compartment 9 with the rollers 10 from overheating, as a result of which the fluoroplastic coating is unwound from the film to the roll.

The inclined ribs 21 serve to evenly distribute the cold air across the width of the chamber 8 and, thus, uniformly cool both the film and the walls of the chamber. Changing the angle of the ribs 21, it is possible to achieve an optimal cooling mode in each particular case.

If it is necessary to conduct multi-stage heat treatment, the material is transferred to the downward branch of the installation, the design of which is similar to the upstream,

The material enters the second chamber. Passing the cooling chamber 8 and the suction compartment 4, the processed material enters the heating chamber 3, where it is also exposed to upward heated air streams moving along the film web along

helix. After heat treatment, a material, such as a polyamide-fluoroplastic film, is applied for visitation and winding.

Claims (1)

Invention Formula An apparatus for heat treatment of a lengthy material, containing rectangular drying and cooling chambers located one above the other and a transport device for moving the dried material along their axis, characterized in that, in order to increase the quality and efficiency of the process when processing the coated film material, between the chambers there is an additional steam-air suction compartment, which has horizontal dividing partitions with the material slots and asymmetrically with both chambers lateral outlets, with at least the opposite walls of the heating chamber on the inner side provided with fins inclined at the same angle scrap to the axis and directed at each wall in opposite directions. one dl FIG. g 6-5 YU 18 Фцг.З -AT -.ff . Yr ll E -. 15 FIG. 6