SU112290A1 - Drying and moisturizing unit for leather - Google Patents

Description

A drying and wetting unit for leather is known, comprising a drying section and a wetting section, equipped with a chamber for producing a steam-water mixture.

The proposed drying and moisturizing aggregate for leather, as compared with the known, is more nrost and allows one to accelerate and improve the treatment of leather.

For this purpose, vertical air ducts with slots facing the inside of the unit for air passage from the humidifying section forming air curtains between the sections as well as between the unit and the room are mounted on the outer side walls of the unit at the boundary between the sections and at the exit from the unit.

In the upper parts of the humidifying and drying sections, pipelines connected to the centrifugal fans are installed, having alternating non-cross and longitudinal openings in the lower part for the steam-water mixture to enter the humidifying section and heated air — into the substantial section.

In the aggregate, an endless chain conveyor is used, continuously moving the skin through the skin and moisturizing sections.

FIG. 1 shows a diagram of the unit; in fig. 2 is a view along arrow B in FIG. one; in fig. 3-section but A A in FIG. one; in fig. 4-section along BB in FIG. 1.

A power moistening unit is a camera sheathed from the side and ceiling sides with heat insulating shields and consisting of a drying section G and a moisturizing section D.

The drying and moistening sections are interconnected by a common endless conveyor 1, carrying shchesty 2, to which are attached the clips for fixing and suspension of raw leather. The unloading of leathers from the unit is automated by self-opening the clips as the leathers leave the humidification chamber. The upper branch of the conveyor return No. 112290 „2

it protects the free poles to the place where the leather is loaded, and the lower branch moves the poles with the leather through both sections.

At the boundary between the sections and at the exit from the unit, on the outer side walls of the unit, vertical air ducts 3 and 4 are reinforced, with slots facing the inside of the unit.

In the upper part of the drying section, an injection air duct 5 is mounted, alternating transverse and longitudinal holes 6 on the bottom surface and connected to centrifugal fans 7 and 5 and plate heaters 9 and 10 installed on the end parts of the substantial section. Circulation of the heated air inside the drying section is carried out with the return of part of the exhaust air. The exit of air from the holes 6 occurs at high speed. Part of the exhaust air in the mixture with fresh air through the air ducts // is sucked in by the screw 7 and 5, fed into the heaters 9 and 10 and then through the pipe 5 enters the drying section and passes between the skins being moved 12. The air passed through the skins, is saturated with moisture, and part of it is thrown out by the fan located in the lower part of this section (the fan is not shown in the drawing), and the other part of the air mixed with fresh air is sucked back by the fans 7 and 8.

The moistening process of the stake proceeds with the formation of air curtains from vertical ducts 3 and 4 and complete air recirculation carried out by two centrifugal fans 13 and 14 located on the front portions of the humidifying section D and connected to the pipeline 15 having alternating transverse on the bottom surface and longitudinal holes 16. The formation of a steam-water mixture takes place in chambers 17, inside of which are located the water supply nozzles 18 and perforated steam pipes J9.

The treated air from the humidification section passes air chambers 17 through the return air ducts 20, the separators 21 are sucked in by centrifugal fans 13 and 14. Then, part of the air required for reducing the infiltration is discharged, and the other part is blown through the pipe / 5. 13 and M in section. The moistened air washes the skin 12, gives them some of its moisture and then enters the chambers 17, etc.

The leaks of water entering to produce a water-vapor mixture fall onto the inclined chamber 17 and by gravity flow into the collection tank equipped with a strainer, and further through the secondary filter are pumped to the nozzles 18 (tank with filters on the imp shown not shown). The treated skin after leaving the aggregate is guided by a belt conveyor 22 according to importance.

Subject invention

Claims (3)

1. Drying and moisturizing unit for leather, including a drying section and a section for moistening, equipped with a camera to obtain a water-steam mixture, so that, in order to simplify its construction , at the boundary between the sections and at the exit from the unit, on the outer side walls of the unit, vertical air ducts are installed with slots facing the inside of the unit for air passage from the humidifying section forming air curtains between the sections and also between the unit and the workroom. 2. The desiccant moisturizing unit according to claim I, characterized in that, in order to accelerate and improve the treatment of leathers, in the upper parts of the moisturizing and drying section, the pipelines connected to the centrifugal fans are installed, having in the lower part alternating transverse and longitudinal openings for the exit of the ion-water mixture s humidification section and heated air into the drying section. 3. The form of the unit on PP. 1 and 2, characterized in that it uses an endless chain conveyor that continuously moves the skin through the drying and moisturizing sections. - 3 -N ° 112290