A kind of cooling equipment for the production of food grade calcium carbonate powder

Abstract

The invention discloses a cooling device for the production of food-grade calcium carbonate powder in the technical field of calcium carbonate powder production and cooling. The cooling device comprises a motor. The motor is fixed on the side wall of a fixed plate through a bracket. The upper end of the fixed plate is in contact with a ring plate, and the inner wall of the ring plate is fixed. A sieve barrel is connected, the outer wall of the sieve barrel is fixedly connected with a rocking rod, the end of the rocking rod away from the screen barrel is rotatably connected to the eccentric rotating shaft of the motor, the screen mesh is fixedly arranged at the lower end of the sieve barrel, and the funnel plate is fixedly arranged at the lower end of the fixed plate; In the existing equipment, water-cooling heat exchange is used for cooling, and the calcium carbonate powder is contacted with the inclined water-cooling plate to cool the calcium carbonate powder. The friction makes the calcium carbonate powder in the lower layer have poor fluidity, so that the calcium carbonate powder in the upper layer cannot contact the water-cooling plate, which makes the cooling effect of the calcium carbonate powder poor. In the actual operation process, the water-cooling plate cannot be lengthened infinitely.

Description

technical field [0001] The invention relates to the technical field of cooling for the production of calcium carbonate powder, in particular to a cooling device for the production of food-grade calcium carbonate powder. Background technique [0002] The chemical formula of calcium carbonate, CaCO3, is a chemical substance. Calcium carbonate is a commonly used surface agent and the main component of marble. Calcium carbonate can be divided into edible calcium carbonate and industrial calcium carbonate. Food grade calcium carbonate is often used as a food additive. It is used for food preservation during the production of food. Calcium carbonate can make the surface of food such as cake fluffy and taste good. Edible calcium carbonate is high-purity calcium carbonate. [0003] In the existing equipment, water-cooling heat exchange is used for cooling, and the calcium carbonate powder is contacted with the inclined water-cooling plate to cool the calcium carbonate powder. Fric...

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Problems solved by technology

[0003] The existing equipment is cooled by water-cooled heat exchange, and the calcium carbonate powder is cooled by contacting the calcium carbonate powder with an inclined water-cooled plate. Due to the extremely poor fluidity of the calcium carbonate powder itself, there is a gap between the calcium carbonate powder and the water-cooled plate. Friction makes the fluidity of the calcium carbonate powder in the lower layer poor, so that the calcium carbonate powder in the upper layer cannot be in contact with the water-cooled plate, which makes the cooling effect of the calcium carbonate powder poor, and the water-cooled plate cannot be infinitely lengthened during actual operation; secondly, the inclination angle of the water-cooled plate is too large , the flow rate of calcium carbonate powder is too large. At this time, due to the Bernoulli principle and the difference in flow rate, the calcium carbonate powder will no longer be in contact with the water-cooled plate, resulting in poor cooling effect or even cooling failure; The air convection cooling method, the calcium carbonate powder is passed through the cooling equipment, and the cold air is passed through to cool the calcium carbonate powder. This method is easy to cause excessive dust of the calcium carbonate powder, which may cause air The phenomenon of explosion appears, and secondly, this method is easy to cause the water vapor in the air to cool, thus mixing calcium carbonate powder, which makes the calcium carbonate powder wet and agglomerate, which leads to the phenomenon of calcium carbonate powder deterioration

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