JPS636237Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is a method for dyeing fabrics containing cellulose fibers, such as fabrics made of cellulose fibers and fabrics made of blended yarns of cellulose fibers and polyester fibers. Regarding a steamer for a padded steam continuous dyeing device.

(Conventional technology) Padded steam continuous dyeing equipment for dyeing fabrics containing cellulose fibers uses chemical padding,
It consists of a steamer and an open soaper. A liquid containing a reducing agent such as a calcarine agent or hydrosulfite is padded onto the fabric that has been padded with dye in advance and dried using a chemical padder, and then heated to 102 to 104℃ using a steamer with air cut off. A steam treatment is performed for 15 to 30 seconds to dissolve, diffuse, and fix the dye, and then oxidation, water washing, and soaping are performed using an open soaper. The steamer described above has a large number of upper guide rollers and lower guide rollers for guiding the fabric in a chamber formed of a heat insulating material, and guides the fabric in a staggered manner. A small air-blocking chamber equipped with a pipe is provided at a height approximately midway between the above-mentioned upper guide roller and lower guide roller, and a water seal tank is provided on the exit side near the height of the lower guide roller and inside the chamber. It was designed to prevent outside air from entering.

(Problem to be solved by the invention) As the fabric passes through the water in the water seal tank, it becomes contaminated with thread waste, undyed dyes, chemicals, etc. Clean the water seal tank when replacing it. However, since the conventional water seal tank is installed at a low position that is approximately the same height as the lower roller, it is easy to clean the water seal tank as described above. The height of the edge is very low compared to the upper edge of the slit for introducing the fabric, which is provided on the partition plate between the air isolation chamber and the chamber on the entrance side, and the difference is 50 to 60 cm.
Therefore, when the water in the water seal tank is discharged during the cleaning process, air enters the chamber from below the water seal plate. Therefore, when restarting the steamer, a large amount of steam must be introduced into the steamer to exhaust the intruded air and fill the chamber with saturated steam.
There was a problem that a large amount of energy and time was wasted.

(Means for solving the problem) An air-blocking chamber is provided on the fabric inlet side of the chamber, a water seal tank is provided on the fabric outlet side, and a large number of upper guide rollers and lower guide rollers for guiding the fabric are installed in the chamber. In the steamer for a padded steam continuous dyeing device equipped with Set the height approximately equal to the lower edge of the seal plate.

(Function) By setting the height of the upper edge of the fabric introduction slit on the fabric entrance side and the height of the lower edge of the water seal plate on the fabric exit side to be approximately equal, the fabric introduction slit and the fabric on the lower side of the water seal plate can be Since there is almost no pressure difference at the outlet, no steam is blown out and no air is sucked in. in this case,
It is preferable that the difference between the height of the upper edge of the fabric introduction slit and the lower edge of the water seal plate does not exceed 50 mm for both the upper and lower ends. occurs, and the pressure at the former position becomes higher than atmospheric pressure, while the pressure at the latter position becomes lower than atmospheric pressure, and while steam blows out from the fabric introduction slit, steam flows from the bottom of the water seal plate into the chamber. air is sucked into. On the other hand, if the lower edge of the latter water seal plate is too high, steam will blow out from the bottom of the water seal plate, while air will be sucked in from the fabric introduction slit.

(Example) In Fig. 1, 1 is a chemical padder and 2 is a steamer, and the fabric F padded with a reducing agent in the chemical padder 1 is sent to the steamer 2 via a guide roller 1a and treated with steam heat. open source (not shown)
oxidized, washed, and soaped.

The chamber 3 of the steamer 2 is formed of a heat insulating material, and has an air blocking chamber 4 protruding from the inlet side facing the chemical pad 1. This air blocking chamber 4 is separated from the chamber 3 by a partition plate 5,
Steam heating pipes 6 are provided along the upper edge of the entrance slit 4a of the air blocking chamber 4 and the upper and lower edges of the slit 5a for introducing the fabric provided in the partition plate 5, and further along the ceiling of the air blocking chamber 4. A large number of steam heating pipes 7 are provided in the section. Note that 6a is a gutter for catching dew, and 7a is a cover. And air isolation chamber 4
An exhaust duct 9 is connected to an exhaust port 8 opened in the side wall of the chamber 3, and the air that is carried by or contained in the fabric F and introduced into the air isolation chamber 4 from the inlet slit 4a is transferred to the chamber 3. The air is discharged from the exhaust duct 9 along with some steam flowing into the air isolation chamber 4 through the slit 5a, thereby preventing the air from entering the chamber 3. Note that the slits 4a and 5a are provided at approximately the same height.

Inside the chamber 3, there is a slit 5 of the partition plate 5.
A guide roller 10 is provided adjacent to a, and a large number of upper guide rollers 11 and lower guide rollers 12 are arranged in a staggered pattern. The upper guide rollers 11 are drive rollers, and are rotated one by one by a torque motor 13 via a belt transmission mechanism 14, as shown in FIG. 2, while the lower guide rollers 12 are passive rollers of passive rotation. .
A plurality of upper steam jet pipes 1 are disposed between the upper guide roller 11 and the lower guide roller 12.
5 is provided, and a plurality of lower steam ejection pipes 16 are provided below the lower guide roller 12. Note that 17 is a door provided on the side wall of the chamber 3, and 18 is a water-sealed drain pipe provided at the bottom.

A water seal tank 19 is fixed to the opening on the outlet side (right side in FIG. 1) of the chamber 3 described above. Inside this water seal tank 19, a water seal plate 20 is inserted from above and an in-tank guide roller 21 is provided.A solenoid valve 23 is connected to a drain pipe 22 connected to the bottom plate of this water seal tank 19. A water supply pipe 24 and a guide roller 25 are interposed slightly above the water seal tank 19, and an overflow gutter 26 and an overflow pipe are provided at the rear of the water seal tank 19 to receive water overflowing from the rear part. 27 are provided in sequence. The height H of the lower edge of the water seal plate 20 is equal to the upper edge of the slit 5a on the side of the air shielding chamber 4 (steam heating pipe 6).
The height is set approximately equal to the height Ha of the lower edge of

In the above structure, while the steamer 2 is in operation,
Water is supplied to the water seal tank 19 from the water supply pipe 24, and when the water level reaches the height of the rear edge of the water seal tank 19, it overflows and is drained from the overflow pipe 27 to keep the water level constant. The lower end of the water seal plate 20 is immersed in the water at the constant water level to isolate the inside of the chamber 3 from the outside.
When cleaning the water seal tank 19, use the drain pipe 2
The electromagnetic valve 23 of No. 2 is opened to drain the water from the water seal tank 19, and at the same time, the inner surface of the water seal tank 19 is washed with water supplied from the water supply pipe 24. When the cleaning is completed, the solenoid valve 23 is closed, and after the water level in the water seal tank 19 reaches a predetermined level, operation is resumed. In addition, when performing this cleaning, the exhaust fan (not shown) attached to the exhaust duct 9 of the air isolation chamber 4 is stopped, and the air is It is preferable to slightly increase the amount of steam to be injected so that some steam constantly flows out from the slit 5a on the inlet side and the gap below the water seal plate 20.

In the above embodiment, a timer is connected to the solenoid valve 23, and when cleaning, the solenoid valve 23 is opened, and the solenoid valve (not shown) for the water supply pipe 24 is fully opened, and a predetermined time has elapsed. Thereafter, a series of operations can be automatically performed in which the solenoid valve 23 is closed and the opening degree of the solenoid valve for the water supply pipe is returned to its original state after the water level reaches a predetermined position.

(Effect) When cleaning the water seal tank, it prevents outside air from entering the chamber of the steamer from the water seal tank, which eliminates the troublesome work of introducing steam into the chamber every time the cleaning process is completed. This eliminates the need for cleaning, which shortens cleaning time, saves steam energy, and improves operating efficiency. Then, it is only necessary to change the position of the water seal tank, and no special equipment is required.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of an embodiment of this invention, and FIG. 2 is a sectional view taken along the line -- in FIG. F: fabric, 2: stirrer, 3: chamber, 4: air isolation chamber, 5: partition plate, 5a: fabric introduction slit, 11: upper guide roller, 12: lower guide roller, 19: water seal tank, 20: Water seal plate, H, Ha: height.

Claims (1)

[Scope of claim for utility model registration] [1] An air-blocking chamber is provided on the fabric entrance side of the chamber,
In addition, in a steamer for a padded steam continuous dyeing apparatus, which is equipped with a water seal tank on the fabric outlet side and a large number of upper guide rollers and lower guide rollers for guiding the fabric in the chamber, the above-mentioned air-blocking chamber and chamber are connected. Padded steam continuous dyeing characterized in that the height of the upper edge of the slit for introducing the fabric provided in the partition between the spaces is set approximately equal to the height of the lower edge of the water seal plate inserted from above into the water seal tank. Steamer for equipment. [2] The steamer for a padded steam continuous dyeing apparatus according to claim 1, wherein the difference between the height of the upper edge of the slit for introducing the fabric and the lower edge of the water seal plate is within 50 mm vertically.