Industrial electromagnetic induction heating device

Abstract

The invention provides an industrial electromagnetic induction heating device. The external circumference of a charging barrel is provided with an insulating layer; an electromagnetic coil is coiled on the insulating layer; the outer periphery of the electromagnetic coil is provided with a complete electromagnetic shielding layer; the electromagnetic shielding layer is connected with an electromagnetic eliminator; and a metallic cover covers outside the electromagnetic shielding layer and is connected with the electromagnetic eliminator. The complete closed electromagnetic shielding layer and electromagnetic radiation eliminating loop can efficiently eliminate the electromagnetic radiation to ensure the equipment safety and the personal safety.

Description

technical field [0001] The invention relates to an electromagnetic induction heating device, in particular to an industrial electromagnetic induction heating device with a safety shielding device. Background technique [0002] At present, in plastic processing industries such as plastic molding, blow molding, and granulation, the heating method is resistance infrared heating, which has disadvantages such as low thermal efficiency, large temperature control error, and long initial heating time. [0003] First of all, resistance heating itself has low thermal efficiency. Resistance heating adopts the method of heat conduction. The heat is conducted through resistance wire → insulating layer → barrel shell → plastic in the barrel. The speed is slow and the heat loss is large. Only the resistance contacts the side of the barrel. The heat is utilized, and the heat on the other side is dissipated into the air, causing a lot of energy waste and increasing the temperature of the wor...

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Problems solved by technology

[0011] The Chinese patent No. 200820044639.X discloses an electromagnetic heating device for plastic machines, which uses an electromagnetic induction coil to be evenly wound on the outermost layer of the barrel, and a heat insulation layer is added outside the barrel. It is made of aluminum or copper metal materials. The method of cooling the barrel to cool the barrel is used to control abnormal temperature, and the method of adding heat dissipation pipes on the heat insulation layer causes low efficiency and waste of heating energy in the early stage

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