SU1640243A1 - Fabric scouring method and apparatus - Google Patents

Abstract

The invention relates to textile finishing production and is intended for washing the fabric. The purpose of the invention is to increase the intensification of the washing process and reduce the tension of the fabric when it is carried out in washing machines. The method consists in guiding the fabric through a forcibly moving solution along the surface of the moving fabric in the same direction of movement with a greater magnitude. The device contains a bath with a solution, upper drive and lower transom fabric-guiding rollers, made in the form of shafts, on which sleeves are mounted. sleeves on bearings mounted pulleys Between the rollers there are installed the upper and lower rows of camshafts connected by belts with the corresponding fabric guide rollers The adjustment of the drive of the camshafts is independent of the drive of the movement of the fabric. 2 sec. f-ly, 3 ill., 1 tab. sl C

Description

The invention relates to textile finishing, namely to washing the fabric.

The aim of the invention is to intensify the process of washing the fabric and reduce its tension.

The method of washing the fabric consists in the forced movement of the solution between the moving cloths of the fabric, while the movement of the solution is carried out in the direction of the movement of the fabric at a speed exceeding the speed of movement of the fabric.

FIG. Figure 1 shows the distribution of strength and tension of the fabric at four points with Ftp P and Fp Ptr Ti FTp + P. Ta O,

Tz Fp, T4 P + Fp - FTp; Fp FTp + P, Ta 0, Tz Fp, TA 0;

Ti f

TP

when FTp P and Fp FTp Ti FTp

- Fp, T T2 0, Tz

P + Fp - ftp

+ P, T2 0, Tz Fp FTP Ti Ртр + P, Ti - P - FTp. T - tension

oh rosinried tom avvleyah Oh,

TP

, Tz P, nia

tissue. Ftp is the friction force between the tissue solutions. Fp is the friction force in the bearings of the lower guide rollers P is the fabric weight; Fig. 2 is a schematic diagram of a fabric washer; Fig. 3 - cloth guide roller

At high speeds of movement of the fabric in the solutions, the forces of friction greatly exceed the forces of the weight of the fabric and the forces of friction in the bearings of the cloth guide rollers.

For a fabric with a mass of 180 g / cm2 with a vertical distance of 0.85 between the rollers, not taking into account the Archimedean force, which reduces the weight of the fabric, the ratio of fabric weight and friction forces is approximately 1: 3, therefore the change in tension during the intensification of washing is determined by formula

TA ° 2 FTP + Fp

 T4P + Fp - Rtr

oh oh

Yu

four

SA)

With a roller weight of 120 N, a friction coefficient of 0.09 and disregard of the effect on the tensioner tension fabric Fp 10.8 N.

With a distance of 1 m between the upper and lower rollers, the fabric weight is art. 3471 is 4.1 N. With a friction force of Rtr of 10 N, the tension of the fabric in vol. 1 (1) will increase by about 3.4 times, and in vol. 4 it will decrease by 6.2 times.

Since the tension of the fabric is important and determines the stretching of the fabric, the nature of the change in the tension of the fabric is given in the table.

Tension of the fabric fluctuates greatly, starting from the entrance of the upper roller, which, from the point of view of ensuring minimal stretching, is a favorable circumstance. Moreover, high-speed stretching of the fabric is observed and plastic deformation does not have time to develop.

A device for carrying out the method (Fig. 2) contains upper drive and lower transom guide rollers 2 for loop-shaped wiring of fabric 3, spreader 4, pull pair 5 and compensator 6 installed in bath for solution.

The device has means for forced movement of the solution, which has camshafts 7 with an individual drive installed in the bath 1 between the guide rollers 2

Each guide roller 2 is made in the form of a shaft 8 consisting in length in alternating order of sleeves 9 and pulleys 10 mounted on bearings 11.

The maximum diameter of the pulleys 10 is less than the outer diameter of the sleeves 9. The pulleys 10 are connected to the camshafts 7 by means of endless belts 12.

The latter are mounted with the possibility of moving with a speed exceeding the speed of rotation of the driving guide rollers.

.

The device works as follows.

Along the tissue moving through the solution in the direction of its movement, a solution flow is created, the speed of which is greater than the speed of the tissue. Due to the difference in the velocities of the surface of the fabric and the solution, a significant dynamic pressure of the liquid appears at the surface of the fabric, providing an intensification of washing and a decrease in the tension of the fabric.

Claims (2)

1. A method of washing the tissue, which consists in forcing the solution to move between the moving cloths of the fabric, characterized in that, in order to intensify the process of washing the fabric and reducing its tension, the forced movement of the solution is carried out in the direction of the movement of the fabric with a speed exceeding the speed of movement of the fabric, 2. A device for washing the fabric containing upper drive and lower erratic guide rollers installed in the solution bath for loop-shaped wiring of the fabric and means for forcing the solution to move, characterized in that, in order to intensify the process of washing the fabric and reduce its tension , the means for forcing the solution to move has camshafts with an individual drive installed in the bath between the rollers, each guide roller being made in the form of a shaft along the length alternating arrangement of the sleeves and bearing on pulleys connected to the camshafts by endless belts, the endless belts are mounted for movement with a speed exceeding the rotational speed of the drive guide rollers. P 1 Yu gu / / l & KST / T ltlSSSS // / АЫЬ & У / //// 222 /// (Ft ///% ZZ ///, (, Editor C Baker Compiled by A. Romanov Tehred M. Morgantal. Corrector V.Girn to FIG. 2 at Fi.Z