Multi-screw measurement feeding and mixed conveying system

Abstract

The invention discloses a multi-screw measurement feeding and mixed conveying system. The multi-screw measurement feeding and mixed conveying system comprises a heterodromous multi-screw powder body measurement feeder, a colloid measurement feeder, a homonymous multi-screw mixed conveyer and a homonymous dual-screw air exhaust device; the homonymous multi-screw mixed conveyer comprises a machine barrel; the machine barrel comprises a first barrel body, a second barrel body and a third barrel body which are connected sequentially; a feeding opening is formed in the upper side of the first cylinder body, and is in flexible connection and sealing with the powder body measurement feeder; a colloid charge opening is formed in the upper side of the second barrel body, the colloid charge opening distributes colloid by adopting a pours plate and enables the colloid to be dropped uniformly on the surface of the powder body in the barrel body; an air exhaust opening is formed in the upper side of the third barrel body, and is connected with the homonymous dual-screw air exhaust device so as to exhaust moisture from the machine barrel. The multi-screw measurement feeding and mixed conveying system thoroughly solves the difficulties of nanoscale inorganic powder body feeding difficulty and easiness in scattering, improves the production efficiency, reduces the energy consumption, and has the advantages of high automatic degree, high precision and good seal property.

Description

technical field [0001] The invention relates to a multi-screw metering feeding and mixing conveying system. Background technique [0002] At present, in the production of special materials such as silicone sealants, adhesives, and coatings, it is necessary to add ultrafine powders such as fumed silica, ultrafine talcum powder, and nano-scale calcium carbonate to the colloids to play a role. Reinforcing, thickening, matting and other effects. These ultrafine inorganic powders have a small particle size (10-20nm) and a large specific surface area (150-200m 2 / g), and are easily suspended in the air, so it is difficult to add directly to the colloid. At present, the common method in China is to stir and mix the colloid and ultrafine powder in a planetary mixer or a powerful disperser, and then pour it into a container for storage and use it in the following process. The disadvantages of this method are: using manual weighing, it is easy to cause dust pollution during the wei...

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Problems solved by technology

The disadvantages of this method are: using manual weighing, it is easy to cause dust pollution during the weighing process, and the measurement accuracy is unstable; the maximum addition amount is only about 5%, and it is difficult to meet the technical requirements of 15%; It is easy to agglomerate, which leads to the inability to fully disperse the powder in the next process and thus affects the product quality; the production method is intermittent and cannot form efficient continuous production

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