Defoaming device for high viscosity liquid product

Abstract

The invention discloses a defoaming device for a high viscosity liquid product, which comprises a vacuum stirred tank, a storage tank, a vacuum pump and a motor, wherein a sealable cavity of the vacuum stirred tank is respectively conducted with the storage tank and the vacuum pump and is provided with a stirred shaft; the lower end of the stirred shaft is fixedly connected with a horizontal metal baseboard the edge of the periphery of which is declivous; the metal baseboard is provided with a barrel filter and a barrel clapboard surrounding the stirred shaft at intervals; under the condition of low voltage and rotating centrifuge, the high viscosity liquid enters the inside of the filter by the spraying of the storage tank, enters a draft duct between the clapboard and the metal baseboard along a metal pipe on the clapboard after the impact and centrifugation defoaming, and then flows to the bottom of the vacuum stirred tank after the impact and centrifugation defoaming again, and finally a high viscosity liquid product is obtained after the defoaming. The invention has simple structure, is easy to operate, has high defoaming efficiency and the like, and overcomes the defects that the existing device has sole defoaming mode and low defoaming efficiency.

Description

technical field [0001] The invention relates to a defoaming device for high-viscosity liquid products, in particular to a mechanical defoaming device for high-viscosity liquid products containing surface active substances such as water-based color paste and neutral pen ink. Background technique [0002] In the production process of high-viscosity liquid products such as water-based color paste and gel pen ink, in order to ensure that basically water-insoluble solid particles such as pigments can be stably dispersed into liquid products, it is often necessary to add surface-active substances such as dispersing aids. Substances, and in the dispersion and grinding process in the production process of water-based color paste, gel pen ink and other products, these surface active substances often lead to the generation of a large number of fine foams, and these surface active substances have strong stability for fine foam Effect, and products such as water-based color paste and ge...

AI Technical Summary

Problems solved by technology

The above-mentioned defoaming equipment has certain defects: the production efficiency of centrifugal defoaming equipment is low, and there are many foam residues; when vacuum defoaming, continuous vacuum defoaming will often cause excessive expansion of foam volume, which will cause liquid foam to enter the vacuum pump and affect the equipment. For normal use, if intermittent vacuuming is used for defoaming, the interval between two vacuumings is too long, resulting in low defoaming efficiency, and during the interval of vacuuming, the released gas will also affect the vacuum degree, further reducing the defoaming Efficiency: In high-viscosity liquids, small bubbles have greater resistance when they vibrate under the influence of ultrasonic waves, and the probability of converging into large bubbles is much smaller. Even if large bubbles are formed, it is difficult to escape from the liquid quickly. Therefore, ultrasonic defoaming is very important The defoaming efficiency of high-viscosity liquids is extremely low; heating and defoaming not only consumes a lot of energy, but also accelerates the settlement of pigments in water-based colorants and gel pen inks due to factors such as the reduction of the adsorption force of dispersants at high temperatures, affecting product stability

At present, the physical defoaming devices used in industry have defects such as single defoaming method, low defoaming efficiency, and certain damage to product performance during the defoaming process.

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