Improving The Slurry Tank Is Conducive To The Wide Sizing Trend Of High Pressure Sizing Sizing Machine.

The development of < p > modern a href= "http://www.91se91.com/news/" > sizing machine < /a > also shows this trend.

Its main technological progress is mainly embodied in the parts of slurry tank, wet separator, drying part, post waxing unit, pre wet sizing and solid ratio detection device.

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< p > < strong > improve slurry tank for high pressure sizing < /strong > < /p >.

< p > < strong > the sizing trend of sizing machine is obviously less than /strong > < /p >.

< p > the improvement of slurry tank is first of all, which is more conducive to high pressure sizing.

In addition to making full use of the adhesiveness, film-forming property, adhesion of hairiness, and increase of wear resistance, high pressure sizing is also more conducive to less and no PVA sizing, improving starch adhesion effect, reducing starch pulp dropping rate, reducing sizing rate and drying consumption.

Therefore, high pressure sizing is essentially a low carbon sizing process conducive to environmental protection.

The sizing pressure of high pressure sizing can be further improved from 40kN. For example, Tsuda Ko's latest TTS20S sizing machine has increased the pressure to 50kN, which is a representative of this new trend.

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< p > in order to achieve high pressure sizing, < a href= "http://www.91se91.com/news/index_c.asp > > warp machine > /a > the main part of the press roller core should be made of high quality steel.

This ensures that the pressure of the left, right and right sides of the roller is consistent under different pressures.

At present, the vertical direction is adopted in the arrangement of the rolls, but the grouting effect is not satisfactory.

During the "12th Five-Year" period, China will also endeavour to popularize the similar slurry tanks of the TTS20S type or the domestic GA310 type pverse grouting and vertical yarn, which is conducive to the use of wet split rods and the realization of the barrel upgrading.

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At present, P imported from abroad and domestic made three pulp tanks (such as GA311 sizing machine) have been put into use in many factories in China.

This is not only applicable to the multicolor demand of multicolor or yarn dyed fabrics, but also different fibers and warp yarns are used in different slurry tanks with different sizing and sizing processes.

Therefore, with the upgrading of fabric grades and variety, the trend of multi slurries of sizing machines will be more obvious.

At the same time, the widening trend of sizing machine is becoming more and more obvious.

Recently, Heng Tian heavy industry group has begun to manufacture GA312 sizing machine for foreign countries. The pulp tank, drying cylinder and a series of pverse rollers are changed from 200 centimeters to 240 centimeters.

There are at least two advantages of broadening. One is to adapt to the increase of head size of wide and high density fabric, so that the coverage of yarns at sizing roller and press roller is not too large, so as not to affect sizing quality.

The two is to solve the problem of the difference between the width of the yarn in the existing drying room and the width of the trailing roller, the large inclination of the side yarn, the uneven tension and uneven arrangement of the whole yarn.

It is necessary to consider the width matching of sizing machine and warping machine. Even the new weaving factory should consider the series width requirement of the production of < a href= "http://www.91se91.com" > fabric > /a > variety.

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< p > < strong > wet dividing device, the stranding level is clear, < /strong > < /p >.

< p > < strong > drying part develops toward elevated direction < /strong > /p >

< p > wet separation device is currently a focus of widespread concern.

A wet dividing device is drawn from the pulp tank to the drying cylinder, which is not only conducive to the lamination and pre drying of the yarn, but also by placing the yarn on the surface of the wet bar to separate the yarn, so as to achieve the purpose of reducing the resistance, separating the stranded layers and avoiding breaking and causing regenerated hairiness.

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< p > technical personnel provide some technical measures that can be further promoted through continuous improvement of existing wet dividing devices.

The pmission of the split rod has a reasonable speed ratio with the < a href= "http://www.91se91.com" > yarn > /a >; the improvement of the double root wet bar is positively and reversely rotated, and the pair is used to make the upper and lower yarns of the split bar conform to the direction of the yarn and the speed ratio. The water in the inner part of the wet dividing rod is reduced by water (below 20 degrees Celsius), and the water is kept sufficient to lubricate the surface of the rod, so as to avoid the accumulation of the slurry and dry up. The accuracy of the variable frequency speed regulation of the driving motor is improved, so that the wet drawing area of the sizing machine can maintain sufficient draft ratio at a slow speed, so as to achieve a certain tension. For example, improving humidity.

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< p > according to the current trend, we think that the drying part of the sizing machine will develop towards full viaduct in the future.

The yarn outlet trough of the vertical dryer is vertical upward, the wet pulp flows downwards, and the size distribution is uniform.

At the same time, the wet dividing bar is placed in the appropriate position of the pulp outlet, so that the moisture vaporized on the liquid surface of the slurry tank can increase the wetting effect on the wet surface of the rod, and the groove of the yarn chip is upward instead of forward, so that the value vehicle personnel can get near the slurry tank in front, and realize the barrier free operation on the four sides of the slurry tank.

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< p > at present, the seven unit drier is driven by 1 inverter motors, which controls the whole tension and can not regulate the tension of the yarn before pre drying and combined drying. In the future, the sizing opportunity gradually promotes the pmission of the nine unit, so that the pre drying and the drying cylinder are respectively driven by the motor, so as to better control the elongation of the wet zone and reduce the total elongation of the sizing.

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< p > strong > double waxing device is yet to be developed < /strong > < /p >.

< p > strong > prewetting sizing reduces slurry consumption < /strong > /p >

< p > the existing waxing device can adjust the line speed ratio of the surface of the wax roller and the yarn, control the wax content, and control the temperature automatically, but all the models are waxed on one side, and the wax is uneven on both sides of the yarn.

Two sets of devices are used for two times waxing and complex. Therefore, a simple double waxing device is yet to be developed in the future.

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The pre wet sizing of "P >" is a new technology for sizing in the world.

Because the yarn is washed by hot water first, remove some cotton wax and pectin impurities, clean the surface, increase the adsorption and soaking ability of the slurry, improve sizing strength and reduce hairiness. As the pre pressure water squeezing water is separated from the yarn core, the slurry is pressed into the slurry in the outer layer, so that the slurry consumption can be reduced.

Practice shows that this process can save slurry 20%~30%, which can save desizing treatment cost and environmental protection.

At present, China has introduced Karl Mayer, Tsuda Ko and Benin grid pre wet sizing machine has been used for many years, in the middle and low yarn < a href= "http://www.91se91.com" > cotton yarn variety < /a > has achieved results.

The GA309 sizing machine developed in China has also been successfully put into operation. The GA310A sizing machine with a compact structure is being promoted by the Heng Tian heavy industry group.

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< p > > < a href= "http://www.91se91.com > sizing machine < /a > development, we must strengthen the research of the self control device for detecting the solid content of the slurry with reliable performance and easy cleaning and maintenance. The effect of pre wetting yarns on the slurry concentration is affected by the moisture content of the yarn in the human body, and the research and development of the slurry with high solid content, the stability of the solid content of the slurry slurry and the stabilization of the sizing rate can be enhanced in time. The on-line detection of the sizing rate and the function of the computer screen display should be further improved.

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