RU1774145C - Drying chamber screen - Google Patents

Abstract

Usage: the technique of drying the surfaces of products with a paint and varnish coating, used in drying chambers included in installations for washing, steaming, etching and degreasing of surfaces of products before applying protective coatings. SUMMARY OF THE INVENTION: The curtain is provided with a slotted collector which is connected to its lower end by means of a rigid intermediate element mounted for movement in the rails. 5 ill.

Description

The invention relates to a technique for drying surfaces of products with paint and varnish coatings and can be used in drying chambers included in installations for washing, steaming, etching and degreasing of surfaces of products before applying protective coatings

Known screens of the drying chamber containing a flexible curtain, the upper end of which is rigidly attached to a lifting and lowering mechanism equipped with a drive.

However, the use of such a screen to block the transport openings of the drying chamber is inefficient, since the resulting leaks lead to large emissions of coolant.

The purpose of the invention is to reduce heat loss due to incomplete overlap of the opening.

This goal is achieved by the fact that in the screens of the drying chamber containing a flexible curtain, the upper end of which is rigidly attached to a lifting and lowering mechanism equipped with a drive, the flexible curtain is equipped with a slotted collector of the air curtain, which is connected to its lower end by means of a rigid intermediate element installed with the ability to move in guides for connecting the manifold to the air pipe.

Fig. 1 schematically shows a chamber for drying an article; FIG. 2 is a section AA in FIG. 1; on figs - section BB in fig. 1; figure 4 is a section bb in figure 2; figure 5 - section GG in figure 4.

The apparatus for drying products comprises a chamber 1 with transport openings 2, equipped with flexible heat-insulating curtains 3, moving along the guides 4 installed on both sides of the transport openings. The bending of the curtain is attached to the drive (drum) 5, mounted above the transport opening, onto which it is wound with a manual mechanism 6 during lifting. Slotted collector 7 with air outlet slot 8

VI

xj

Ј SL

equipped with an intermediate element (skid) 9 and attached horizontally to the end of the flexible curtain 3. The flexible curtain is unloaded from the weight of the suspended transfer case with the skid by means of ropes 10 mounted along the edges inside the flexible curtain 3. The ends of the transfer case from the air the start slot 8 is made obliquely at an angle a. In the working position of the flexible curtain 3, the collector 7 with inclined ends joins an air pipe, for example, a pressure duct 11, the ends of which are also inclined at an angle a, forming a tight connection. To prevent distortions and smooth movement of the transfer case with the air outlet 8 on the slide 9, guide rollers 12 and 13 are provided, which move in the guide rails 4. The collector 7 is fixed in the working and non-working positions by means of adjustable stops 14 mounted on the slide 9. In the lower part of the transport opening 2, a suction slotted duct 15 of the air curtain is mounted. The slotted collector 7 can be mounted at the bottom of the transport opening or on both sides of the lower part of the transport opening. In addition, the transport openings 2 are equipped with sliding doors 16. and the installation is equipped with heat ventilation units 17.

When drying long products with a discontinuous surface in length, for example, when drying the semi-trailer of a road train 18, the installation works as follows.

The sliding doors 16 are opened in the transport openings 2 of the chamber 1, while the collector 1 with the air outlet 8 is in the upper idle position, and the bending of the curtain 3 is wound on the drum 5, the road train 18 is pulled into the chamber 1 so that the semi-trailer is inside the chamber 1 and the cab of the road train truck outside the chamber 1. Close the sliding doors 16 in the first transport opening 2 of the chamber 1 and, using the manual mechanism 6, wind the flexible curtain 3 from the drum 5, which smoothly moves with the help of the slide 9 into the guides 4 by rollers 12 and 13 , count Héctor 7 is lowered to the working position of the second vehicle 2. Blind opening 3 overlaps the upper portion

transport opening between the semitrailer and the cab of the truck 18, reducing more than half the open area of the transport opening 2.

Manifold 7 with air outlet

8 with its ends it seals tightly with the ends of the discharge duct 11 of the air curtain, forming a closed system. Then include heat ventilation units 17 of the installation and include air

the curtain of the second transport opening 2.

The air flowing vertically downward from the air outlet 8 of the manifold 7 forms an air curtain that covers the remaining open part of the transport opening 2 and is taken in by the suction slot 15.

During drying, the air curtain reduces the heat loss of the unit and prevents solvent vapors from entering the rooms.

At the end of the drying, the articles 18 turn off the operation of the heat ventilation units 17 and the air curtain. Using a manual mechanism 6, the collector 7 with the air outlet slot 8 is raised to the inoperative position by winding the curtain 3 on the drum 5, after which the road train 18 is pulled out of the chamber 1.

Claims (1)

The claims The screen of the drying chamber, mainly for transport openings, containing a flexible curtain, the upper end of which is rigidly attached to the lifting and lowering a mechanism equipped with a drive, which means that, in order to reduce heat loss due to incomplete overlapping of the opening, the curtain is equipped with a slotted collector of the air curtain, which is connected to its the lower end by means of a rigid intermediate element mounted with the possibility of movement in the guides for connecting the manifold with the air pipe, V 3 St7lw.il   1-1 / 0 g 8 Li B U //////////////////////////////// Sh & /////// r-p Д№Ш eighteen gp 1t i j r, vy Yu fig.Z / FigM fj figure 5