Cooling equipment for food-grade calcium carbonate powder production

Abstract

The invention discloses cooling equipment for food-grade calcium carbonate powder production in the technical field of calcium carbonate powder production cooling, and the cooling equipment comprises a motor, the motor is fixedly arranged on the side wall of a fixing plate through a support, the upper end of the fixing plate is in contact with an annular plate, the inner wall of the annular plate is fixedly connected with a screen barrel, and the outer wall of the screen barrel is fixedly connected with a swing rod; the end, away from the screen barrel, of the swing rod is rotationally connected to an eccentric rotating shaft of the motor; a screen is fixedly arranged at the lower end of the screen barrel, and a funnel plate is fixedly arranged at the lower end of the fixing plate; and the problems are solved that calcium carbonate powder in the lower layer is poor in flowability due to the fact that calcium carbonate powder is cooled in the mode that the calcium carbonate powder makes contact with an inclined water-cooling plate in a water-cooling heat exchange mode in existing equipment and is extremely poor in flowability and friction is generated between the calcium carbonate powder and the water-cooling plate, therefore, calcium carbonate powder on the upper layer cannot be in contact with the water-cooling plate, the cooling effect of the calcium carbonate powder is poor, and the water-cooling plate cannot be lengthened infinitely in the actual operation process.

Description

technical field [0001] The invention relates to the technical field of calcium carbonate powder production cooling, in particular to a cooling device for food grade calcium carbonate powder production. Background technique [0002] The chemical formula of calcium carbonate is CaCO3, which 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 to keep food fresh during food production. Calcium carbonate can make the surface of cakes and other foods fluffy and taste good. Edible calcium carbonate is high-purity calcium carbonate, and its particles are small, so it is easier to be absorbed by the human body, thus playing the role of calcium supplementation. [0003] The existing equipment is cooled by water-cooled heat exchange, and the calcium carbonate ...

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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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