A kind of film cooling equipment and cooling process

Abstract

The invention provides a soft piece cooling device. The soft piece cooling device comprises a steel belt, a first steel belt roller arranged at the outlet end of the steel belt, a second steel belt roller arranged at the inlet end of the steel belt, a feeding device arranged above the inlet end of the steel belt, and a spraying device arranged below the inlet end of the steel belt. The first steel belt roller is provided with a drive motor. A flow valve is arranged at an inlet of the feeding device. The soft piece cooling device further comprises a control cabinet connected with the flow valve and the drive motor. The invention further discloses a cooling technology utilizing the above soft piece cooling device. The cooling technology comprises the steps that the conveying speed of the steel belt is controlled to range from 10 m / s to 20 m / s; the speed that a soft piece solution enters the feeding device is controlled to range from 2 t / h to 4 t / h, and the soft piece solution is conveyed to the inlet end of the steel belt through the feeding device; and the spraying device is used for spraying water to the inner side of the steel belt for cooling, a draught fan is arranged on the steel belt to conduct air cooling on the soft piece solution on the steel belt, and when the soft piece solution reaches the outlet end of the steel belt, the temperature of the soft piece solution is reduced to the normal temperature, and the soft piece solution is cooled to form a solid soft piece at the moment.

Description

technical field [0001] The invention relates to the field of textile auxiliaries manufacturing, in particular to a film cooling device and a cooling process using the device. technical background [0002] Soft flakes are a commonly used textile auxiliary agent, usually made of stearic acid, fatty acid, surfactant, dispersant, glacial acetic acid and other components reacted at a high temperature of about 120 ° C, and the temperature of the material is 80 ° C Left and right film solution, then cooling and molding to form a solid film. The existing cooling equipment usually adopts a cold cylinder cooler, which uses a refrigerator to make cooling liquid and injects it into the cold cylinder for circulation. At the same time, the film solution is placed in the material tank under the cold cylinder, and the film solution is Attached to the outer wall of the cold cylinder and gradually cooled and formed, then the cooled and formed film is scraped from the outer wall of the cold c...

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Problems solved by technology

[0004] 1. The efficiency is low. To cool and form the film solution at around 80°C, the temperature needs to be lowered to room temperature, and the contact area of ​​the outer wall of the cold cylinder is usually small, so sufficient cooling time must be ensured, and the rotation speed of the large cold cylinder is limited , so the maximum linear speed of its rotation is usually 2~3 m / s, so the cooling and forming efficiency of the film solution is low, and the production efficiency of the film is 1~2 tons / hour

[0005] 2. High energy consumption. In order to reduce the cooling time, the temperature of the coolant injected into the cold cylinder is usually below -5°C, so the refrigerator needs to consume a lot of power

[0006] 3. The thickness of the film is inconsistent, because it is scraped from the wall of the cold cylinder, and the film solution still has fluidity on the wall of the cold cylinder before cooling and forming, which may easily lead to inconsistent thickness of the film during cooling and forming

[0007] 4. The viscosity of the film is inconsistent. Because the cold cylinder rotates slowly, the film solution will remain in the material tank for a long time, and it will also flow when attached to the cold cylinder. Therefore, the glacial acetic acid in the film solution that is directly related to the viscosity will Continuous volatilization causes the viscosity of the film at the head and tail to change from thick to thin. The weight ratio of glacial acetic acid in the film solution is usually 0.5~0.6%

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