JPS641991Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to a vibro-type water washing device for tow.

(Prior Art) As a conventional tow or fabric washing device, there is a vibro-type water washing device as seen in Japanese Patent Publication No. 36-15747, Publication Utility Model Publication No. 36-18083, etc., and the device is shown in Fig. 2. show.

1 is a rotating body with protrusions arranged in a balanced manner on its circumferential surface; 2 is a porous cylinder fixed to a liquid tank 4 on the outside of the rotating body; and 3 is a rotatable porous rotor provided further outside the porous cylinder. It is possible to generate radial pressure waves in the liquid between the porous cylinder 3 that rotates the rotating body 1 and the tow or fabric 7, and to increase the alternating flow of liquid into and out of the tow or fabric. This improves cleaning efficiency.

(Problems to be Solved by the Invention) However, such a water washing device has the following problems because it generates strong pressure waves. One of the problems is that the area around the holes of the porous rotor, especially the outer edge of the holes, is exposed to pressure waves for a long period of time, causing significant damage, and this damage can damage the tow or fabric. A further problem is damage to the tow or fabric from the pressure waves themselves. In particular, tow produced by wet spinning still contains a large amount of solvent and does not have sufficient strength when it enters the water washing process, and if it is exposed to concentrated pressure waves locally at this stage, it will easily break down. The thread is cut. Such cutting of the single yarn not only significantly impairs the quality of the product, but also results in the cut single yarn being wound around a perforated rotor or squeezing roll, forcing the manufacturing process to be temporarily stopped. In a continuous mass production type manufacturing process, stopping the process means a huge loss.

(Means for Solving the Problems) The present invention consists of a rotary body 1 in which protrusions are provided in a balanced manner on the circumferential surface inside a porous cylinder 2 fixed in a liquid tank 4, and rotatable porous holes in the outside of the cylinder. The present invention relates to a vibro type water washing device characterized in that the outer periphery of the porous rotor 3 is covered with a net 5 in a tow washing device comprising a rotor 3.

By covering the outer periphery of the porous rotor with a net, the tow does not come into direct contact with the porous rotor, thereby preventing single yarns from being cut due to scratches on the outer edges of the holes. In addition, the pressure waves from the porous rotor holes are dispersed as they pass through the net and hit the tow in a uniform manner, making it difficult for single yarns to break.

The net used in the present invention may be of any type as long as it has a network structure.

The material of the net used in the present invention may be any synthetic fiber or natural fiber, and may be appropriately selected depending on the usage conditions, taking into consideration strength, heat resistance, solvent resistance, smoothness, etc. The net mesh used in the present invention preferably has 5 to 30 meshes.

A conventional vibro-type water washing device may be used as is, except for covering with a net.

(Example) Acrylic fiber tow (single filament denier 3 denier, tow 500,000 denier) spun and hot water drawn using the normal wet spinning method was placed in a vibro washing tank with a 20-mesh polyester net attached to a porous rotor. Washed with water.

During the one-week production period, there were no problems with the winding around the porous rotor or squeeze roll.

The dry strength of the product obtained through the usual post-treatment process was 3.5 g/denier, and the variation rate was 10.5%.

(Comparative Example) An acrylic fiber tow (single yarn 3 denier, tow 500,000 denier) that had been spun and drawn in the same manner as in the example was washed in a conventional vibro washing tank without a net attached.

During the one-week production period, problems with winding around the perforated rotor or squeezing roll occurred three times.

The product obtained through the same post-treatment process as in the example had a dry strength of 3.21 g/denier and a variation rate of 15.7%.

(Effects of the invention) The vibro-type water washing device of the invention can prevent damage to fibers by covering the outer periphery of the porous rotor with a net, and can prevent significant deterioration in quality and operation.

[Brief explanation of drawings]

FIG. 1 is an enlarged sectional view showing the device of the present invention. FIG. 2 is an explanatory diagram showing a conventional device. 1... Rotating body, 2... Porous cylinder, 3... Porous rotor, 4... Liquid tank, 5... Net, 6... Squeezing roll, 7... Tow or fabric.

Claims (1)

[Utility Model Claims] (1) A vibro-type water washing device for tows comprising a rotor 1 having projections on the circumferential surface thereof balanced on the inside of a perforated cylinder 2 fixed in a liquid tank 4, and a rotatable perforated rotor 3 on the outside of said cylinder, characterized in that the outer periphery of said perforated rotor 3 is covered with a net 5. (2) The device described in Utility Model Claim 1, in which the net is made of synthetic or natural fibers. (3) The device described in Utility Model Claim 1, in which the mesh size of the net is 5 to 30 meshes.