RU1784818C - Device for heat treating and drying long materials - Google Patents

Abstract

Usage: heat treatment and drying of long moving materials such as artificial leather in light industry. SUMMARY OF THE INVENTION: an air chamber 1, a drying channel 2, a conveying means for transporting lengthy material 3, blowing nozzles 11 are placed in the housing. A panel 4 made of a high black material is installed between the air chamber 1 and the drying channel 2. Panel 4 contains grooves 7 with heaters 8 fixed therein and blowing nozzles 11. The surface of the panel 4 facing the material to be dried is made of emitting material, and the opposite side has fins for contact with the blown air. 2 ill.

Description

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The invention relates to a heat treatment and drying technique, in particular to a device for heat treatment and drying of long-length moving materials such as artificial leathers.

A known installation of mixed radiation-conventional convection drying or heat treatment of long materials, having a drying channel with a mechanism for transporting the processed material, radiation emitters and an air circulation system consisting of a fan, one or more heaters, ducts and nozzle devices.

A device for drying long materials containing a housing with a drying channel and a conveying mechanism for moving material and

infrared heaters and blowing nozzles located along the material to be dried to direct heated air at a certain speed to the material to be processed, and an air chamber is located above the heaters and nozzles, in which there are heaters with reflectors, the back of which has a developed contact surface with the heated air. In addition, air heaters are located in the chamber.

The disadvantage of this device is that the design of infrared emitters with reflectors cannot simultaneously provide heating for the circulating air, since the fraction of radiation energy in the total amount of energy emitted by them is prevailing.

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The purpose of the invention is the intensification of the drying process.

This goal is achieved by the fact that the installation is provided with a panel, measured between the air chamber and the drying channel, made of material with a degree of blackness having a width corresponding to the width of the material, grooves with heaters fixed therein and blowing nozzles are placed in the panel, while the surface of the panel facing the material to be dried is made radiating, and the opposite side has ribs in contact with the blown air.

In FIG. 1 shows an installation, a longitudinal section; FIG. 2 is a view A of FIG. 1.

In the thermally insulated air chamber 1, a through drying channel 2 is made, through which a processed material 3 is passed using a transporting mechanism (not shown). A heating panel 4 is made over the material 3, made of two plates: the top 5 and bottom 6, in which the grooves 7 are made in the plane of their contact with each other. The heating panel 4 is detachable in order to increase the manufacturability of its manufacture. Tubular heaters 8 are laid in the grooves 7. Slit channels 9 are made between the grooves 7, not coinciding with them, consisting of a tapering part 10 and a nozzle 11. The slotted channels 9 intersect with the ribs 12. The surface 13 of the panel 4 facing the material 3 is made corrugated to increase the area of the radiating surface A fan 14 is installed above the heating panel 4, the outlet pipe of which is connected by a diffuser 15 to the heating panel 4. Between the outer wall of the air chamber 1 and the diffuser 15 are channels 16 for returning works air. The chamber 1 is also equipped with ventilation ducts 17 for removing part of the exhaust air.

Installation works as follows.

For a certain time before starting work, energy is supplied to the tubular heaters 8 and the fan 14 is turned on.

In this, the heating panel 4 is heated and an excess air pressure is created above it. As a result, the heating panel 4 begins to radiate energy and at the same time give part of the thermal energy by convection to the air flowing through the channels 9. Thus, the processed material is affected by radiation from the heating panel 4 in infrared

the range of the spectrum and the jet of heated air formed by the nozzles 11. The heated air leaves the nozzle holes 11 of the panel 4 at a given speed and acts on the processed material 3, which is conducted along the air chamber 1. The exhaust air is returned through channels 16 to the fan 14, and part it is removed through exhaust ducts 17.

Total exposure to radiation and

convection significantly increases the intensity of the heat exchange process, especially during the heat treatment of artificial leather.

Thermal Management

per material is carried out by changing the energy flow in the heaters depending on the temperature of the air leaving the nozzles.

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Claims (1)

The claims Installation for heat treatment and drying of long materials, comprising a housing provided with an air chamber, a drying channel with a conveying means for conveying long material, blowing nozzles and heaters, characterized in that, in order to intensify the drying process, the installation is additionally equipped with a panel placed between the air chamber and the drying channel, made of a material with a high degree of blackness having a width corresponding to the width of the material, moreover, the panel has grooves with heaters fixed therein and blowing nozzles, the panel surface facing the material being dried made radiating, and the opposite side has ribs in contact with the purged air. /5 / J 11 8 7 Type A PP PP QJD OEP cp ar ar ar OJD PP PP QD DD PP CPU w pp nb w w pa DJD DID DD dtl PI PP np sb Fe / g. 7 PP