JP2634033B2 - Temperature control device in airflow type processing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temperature control device for an airflow type processing machine.

[0002]

2. Description of the Related Art Conventionally, as an airflow type processing machine for fabrics, a technique for dyeing or other processing while circulating an endless fabric by an airflow is disclosed in Japanese Patent Application Laid-Open No. 51-32885 and Japanese Patent Publication No. 63-36385. Are disclosed.
In these airflow type processing machines, the cloth is mainly transferred by an airflow, and the processing liquid wets the cloth and performs coloring and fixing of the dye. These processing liquid and air stream are each indirectly heated by a heat medium via a heat exchanger, and steam is usually used as the heat medium.

[0003]

In the case of dyeing or other processing, steam at 150 to 160 ° C. is used as a heat medium. However, when using enzymes to improve shrinkage resistance and texture, it is necessary to control the temperature in the range of 45 ° C. to 60 ° C., and use a high-temperature heat medium such as steam to heat the heat exchanger. When supplied to the supply pipe, there is a problem that the activity of the enzyme is lost because the temperature of the heat transfer surface that directly exchanges heat with the processing fluid through the pipe wall is extremely high.

[0004] An object of the present invention is to prepare two types of heat media to be supplied to a heat exchanger of a processing machine for processing cotton, rayon, wool, etc., and to switch to using one according to the purpose of processing. It is another object of the present invention to provide a temperature control device in an airflow type processing machine which can continuously perform dyeing and other processing and treatment with an enzyme in the same processing machine.

[0005]

In order to achieve the above object, according to the present invention, there is provided an annular cloth formed by connecting at both ends a transfer passage for transferring the cloth in a substantially straight state and a storage tank for transferring the cloth in a meandering state. A processing machine, a processing liquid circulation path for supplying a processing liquid to a processing fluid ejection unit provided at an upstream end of the transfer passage via a pump and a processing liquid heat exchanger from a bottom of the storage tank, An airflow circulation path for supplying an airflow from a gaseous phase section to a processing fluid injection section provided at an upstream end of the transfer passage via a blower and an airflow heat exchanger, and a fabric sprayed and supplied from the processing fluid injection section And a heat exchanger for heating the processing fluid in the heat exchanger for the processing liquid in the processing liquid circulation path and the heat exchanger for the air flow in the air flow circulation path, respectively. A heat medium supply pipe that can supply Of the hot water of a low temperature heating medium that is circulated and supplied from the vapor or thermostat medium, provided the heat medium switching valve for switching to the temperature control of the processing fluid using either, those.

[0006]

According to the present invention, a heat medium supply pipe capable of supplying two types of heat medium is provided for each of the heat exchangers for the processing liquid and the gas stream. Normal processing is performed using the processed processing fluid, and during processing using the enzyme, processing is performed using a heated processing fluid using a low-temperature heat medium composed of hot water. The temperature of the low-temperature heat medium is strictly controlled by a thermostat,
The processing solution and the processing gas stream can be maintained at a temperature that does not impair the activity of the enzyme. Accordingly, the improvement of shrinkage resistance and texture by the enzyme can be performed sufficiently efficiently.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An air flow type processing machine shown as an embodiment will be described below. Reference numeral 1 denotes a cloth processing machine, which includes a header section 3 having a drive reel 2 built therein and a processing fluid ejecting section 4 provided in a horizontal direction.
, A transfer passage 5 and a storage tank 6. The transfer passage 5 and the storage tank 6 are connected at both ends to form an annular passage for circulating the cloth. Reference numeral 7 denotes a processing liquid circulation path, which constitutes a passage from the bottom of the storage tank 6 to the processing fluid injection unit 4 provided at the upper end of the transfer passage 5 through the pump 8 and the processing liquid heat exchanger 9. doing. Reference numeral 10 denotes an airflow circulation path, which blows gas from a gas phase portion 11 of the storage tank 6 to a blower 12 and an airflow heat exchanger 13.
An airflow is supplied to the processing fluid ejecting unit 4 provided at the upstream end of the transfer passage 5 through the above.

Reference numeral 14 denotes a heat medium supply pipe in the heat exchanger for the processing liquid, which is connected to the heat exchanger 9 for the processing liquid in the processing liquid circulation path 7 and has two types of heat medium switching valves 15 and 16. Can be supplied by switching. Reference numeral 17 denotes a heat medium supply pipe in the air flow heat exchanger, which is connected to the air flow heat exchanger 13 in the air flow circuit 10 and heat medium switching valves 18 and 19.
Thus, two types of heat medium can be switched and supplied.
The heat medium switching valves 15 and 18 can supply a high-temperature heat medium by steam, and the heat medium switching valves 16 and 19 can circulate and supply a low-temperature heat medium from a constant temperature device 20.

Steam and water are supplied to the thermostat 20, and the temperature is strictly controlled to produce hot water at a constant temperature.
This hot water is supplied to the processing liquid heat exchanger 9 from the heat medium switching valve 16 via the circulation path 22 via the pump 21, and heats the processing liquid with hot water as a low-temperature heat medium. At this time, the heat medium switching valve 15 is closed. In the circulation path 23, by opening the heat medium switching valve 19, the heat medium is supplied to the heat exchanger 13 for airflow, and the airflow is heated by hot water as a low-temperature heat medium. At this time, the heat medium switching valve 18 is closed.

The hot water discharged from each of the heat exchangers 9 and 13 is returned to the thermostat 20 again via the pump 21 via the return pipes 27 and 28. Therefore, in the case of performing ordinary dyeing or other processing, steam of 150 ° C. to 160 ° C. as a high-temperature heat medium opens the heat medium switching valves 15 and 18 and supplies them to the heat exchanger 9 for the processing solution and the heat exchanger 13 for the air flow, respectively. Then, the processing liquid and the gas stream are heated to a high temperature to perform the processing.
At this time, the heat medium switching valves 16, 16 'and 19, 19' are closed.

After the above dyeing and other treatments are completed, if the shrinkage resistance and texture are to be improved by using enzymes, the heat medium switching valves 16, 16 'and 19, 19' are opened, and
And 18 are closed so that the constant temperature device 20 can circulate and supply hot water at a constant temperature controlled in the range of 45 ° C. to 60 ° C. Therefore, since the temperature on the heat transfer surface that directly exchanges heat with the processing fluid through the tube wall of the heat exchanger is a temperature suitable for activating the enzyme, the enzyme treatment can be stably performed.

In the above description, the heat medium switching valve is individually provided, but a three-way switching valve may be used. Although not shown, by the control unit by the computer, the process can be continuously shifted to a case where the shrinkage resistance and the texture are improved by using the enzyme following the normal dyeing and other processes. The processing can be performed as one unit. Further, the switching of the heat medium switching valve can be performed at the same time.

[0013]

According to the present invention, as described above, one of the two types of heat medium supply pipes is switched to use one of the two heat medium supply pipes, so that dyeing and other treatments are performed and enzyme treatment is performed. The process can be performed continuously, and a sufficient treatment can be performed without losing the activity of the enzyme during the enzyme treatment by switching the heating medium.

[Brief description of the drawings]

FIG. 1 is a flow diagram of an airflow type processing machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fabric processing machine 4 Processing fluid injection part 5 Transfer path 6 Reservoir 7 Processing liquid circulation path 8 Pump 9 Processing liquid heat exchanger 10 Air flow circulation path 11 Gas phase part 12 Blower 13 Air flow heat exchanger 14, 17 Heat medium Supply pipe 15, 16, 16 'Heat medium switching valve 18, 19, 19' Heat medium switching valve 20 Constant temperature device 21 Pump

Claims (1)

(57) [Claims] An annular fabric processing machine comprising a transfer passage for transferring fabric in a substantially straight state and a storage tank for transferring the cloth in a meandering state connected at both ends, and a pump from the bottom of the storage tank.
A processing liquid circulation path for supplying a processing liquid to a processing fluid ejection unit provided at an upstream end of the transfer passage via a processing liquid heat exchanger;
An airflow circuit that supplies airflow from a gas phase portion of the storage tank to a processing fluid injection unit provided at an upstream end of the transfer passage via a blower and an airflow heat exchanger; In the air-flow type processing machine configured to circulate the cloth with the fluid, the processing fluid is heated by the heat exchanger for the processing liquid in the processing liquid circulation path and the heat exchanger for the air flow in the air flow circulation path, respectively. A heat medium supply pipe capable of supplying various types of heat medium is provided, and switching is performed so as to control the temperature of the processing fluid using either the steam of the high-temperature heat medium or the hot water of the low-temperature heat medium circulated and supplied from the constant temperature device. A temperature control device in an airflow type processing machine, comprising a heat medium switching valve.