A method for vacuum defoaming of high-viscosity liquids by using pressure difference and pneumatic force generated by gas contained in the liquid
A technology of vacuum degassing and pressure difference, applied in liquid degassing, chemical instruments and methods, separation methods, etc., can solve problems such as the limitation of degassing speed and increase the complexity of degassing devices, and achieve easy and efficient degassing. , The system is simple and effective
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Embodiment 1
[0021] Such as figure 1 As shown, a liquid vacuum degassing system includes a hopper 1 and a vacuum box 2, and is characterized in that: a degassing container 3 is arranged in the vacuum box, and the degassing container is divided into a small chamber 4 and a large chamber 5, and the small chamber 4 Located on the top of one side of the degassing container, the top of the small chamber 4 is connected to the hopper 1 through the feeding pipeline 6, the position of the hopper is higher than the top of the small chamber, and a valve 7 is also arranged on the feeding pipeline, and the bottom of the small chamber is passed through a sieve-shaped partition 8 communicates with the large chamber of the degassing container; the degassing container is provided with a suction port 9 at the top of the other side away from the small chamber, and an overflow port 10 is provided at the upper part of the container on this side, and the position of the overflow port is lower than the sieve-shap...
Embodiment 2
[0026] This embodiment is basically the same as Embodiment 1, except that the hopper is a sealed container provided with a pressurizing device.
Embodiment 3
[0028] The insulating material for transformer casting is composed of two components ZS-GF-5299WA and B. It needs to be fully stirred and mixed before pouring to form a stock solution with a viscosity of about 80,000 cps. A large amount of air bubbles are mixed during the stirring process, and defoaming is required before pouring. The hopper is open, and the raw liquid slurry is pressed into the small chamber of the liquid vacuum degassing device through the manual valve by atmospheric pressure. There are 6 strip screen holes with a length of 20mm and a width of 3mm on the partition of the small chamber. The air suction port on the top is about 400mm away from the small chamber, and the overflow port is about 20mm away from the top. The maximum vacuum degree of the vacuum box is 100Pa. After vacuuming to close to 100Pa, open the valve to allow the raw liquid to enter automatically, and monitor the overflow of the overflow port. After about 15 minutes, the overflow port began ...
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