DE2249950C3 - Method and device for rinsing or washing and drying textile material - Google Patents

Description

It is known that wet treatment processes such as washing and rinsing are carried out in aqueous liquors are, depending on the type of fiber at different temperatures and optionally with various auxiliary additives is worked and then dried in almost all cases will. Aftertreatment processes in organic solvents are also known, with organic solvents Solvent halogenated hydrocarbons are in the foreground. After treating in organic solvents these are removed from the goods by evaporation and in a suitable Apparatus recovered. Basically all processes are based on drying energy has to be expended for the removal of the water or the organic solvents.

The subject of the main patent 2 214713 is a method for rinsing or washing and then Drying of textile material, in which the material is treated with a liquor that consists of a flammable organic liquid consists or contains such and in which the material is dried by burning off this liquid.

In the further development of this process has now been found that more advantageous results can be achieved if the burning process of the liquid under additional heat supply is made.

For safety reasons, it is advisable to use such mixtures of water and flammable organic Use solvents with flash points above room temperature. With such mixtures It is necessary that the ignition device is designed so that it is initially used for heating the solvent vapors deliver the required energy above the flash point.

If the liquid on the goods z. B. heated by infrared heating rods above the flash point, a single ignition is usually sufficient. The ignition is expediently carried out immediately Near the heating device. Additional heating devices along the combustion path are also advantageous when working with liquors that contain a high proportion of water. This makes it possible to reduce the water vapors to such

To bring temperatures that these vapors directly or indirectly for subsequent fixing processes after drying can be used.

A device suitable for carrying out the method generally consists of an ab-

combustion chamber 1, an ignition device 2 and means for the supply of air 3 and for removal the combustion gases and the water vapor 4. The goods S can either come from above or from enter the combustion chamber below. In addition, certain safety devices must be in place be.

In order to obtain uniform drying of the material web, there must be an ignition device on each side of the material web or on both edges. Gas flames or electrical ignition devices, for example, can be used as ignition devices.

The combustion chamber is up for safety reasons expediently by a metal

pair of rollers 6 sealed. In general, an inlet or outlet slot is sufficient at the lower part of the chamber 7. Both the metal rollers and the einzw. Exit slot can be made with grinding belts 8 or other non-flammable seals. The height of the chamber depends on the throughput speed the goods and the type and quantity of the flammable liquid used. For practical Purposes, the length of the combustion chamber is 0.5 to 10 m, preferably 1 to 5 m can also be designed in a fully or partially open form, with the side walls entirely or partially omitted.

At the upper end of the chamber there are outlet openings 4 for the hot exhaust gases that flow directly into a fixation chamber located next to the burn-off chamber can be passed. The one for incineration required air is supplied from the outside through corresponding pipes 3. For security reasons the combustion chamber can be preceded by a suction device 9, which ensures that such solvent vapors are sucked off, which are given off by the moist goods before entering the chamber. Another safety device or device for stopping the machine consists of Nozzles (10) which, when the version is open or half-open, are directed towards the combustion section and r.ich in the closed version within the combustion chamber or in front of the inlet opening and possibly even before the outlet opening

the same are located and through which nitrogen or some other non-combustible or combustion non-maintaining gas can be conducted.

When these nozzles are opened, it is advisable to switch off the oxygen or air supply connected.

The elements for guiding the goods are expediently from excessive heating by a Heat shield 11 protected. Furthermore, they are adjustable in height, so that the drying section in their Length can be changed. Located along the material web running in the drying chamber on both sides Aufhei;: devices 12, the one hand flammable liquid on the goods

heat above their flash point and, on the other hand, the evaporation of the flammable liquid or promote the water. In addition, they help to heat up the '' combustion gases and the water vapor, so that they can be used directly or indirectly for fixing processes can. Along the drying section are control devices 14 for the drying, the regulation the speed of the goods as a function of the burning distance and for the function of the safety devices appropriate. The flame is controlled, for example, by air nozzles on both sides 13, which are also arranged and pivotable along the combustion path.

Illustrate the combination of the machine according to the invention with known equipment machines the following schematic drawings. The reference symbols used here have the following meanings:

Fig. I.

1 combustion chamber

2 ignition device

3 air supply

4 Removal of combustion gases and water vapor

5 web

6 pair of metal rollers 7 entry slot

8 sanding belts

9 suction device

10 safety nozzles

11 heat shield

12 heating device

13 air nozzles

14 control devices

Fig. II ¹ S 5 web

18 cooling drum

19 cooling chassis

20 pad squeezer

21 Block space under low pressure * ° (811 to 911 mbar) 2 Ignition device 17 infrared shaft with infrared emitters 16 sieve drums, at the same time fixing

15 hot air distribution chamber

Here are 2 sheets of drawings

Claims (2)

Patent claims: 1. Method for rinsing or washing and subsequent drying of textile material, at which one treats the material with a liquor consisting of a flammable organic liquid exists or contains one and in which the material is burned off Liquid is dried, according to main patent 2214713, characterized in that the burning off of the liquid is carried out with the addition of additional heat. 2. Drying device for performing öes method according to claim 1, consisting of a combustion chamber with entrance and exit as well as means of transport for the goods in transit through the system, an ignition element and means for the supply of air and for removal the combustion gases and water vapor, characterized in that in the combustion chamber (1) a heating device (12) is arranged.