Waste heat recovery and material drying energy-saving system for intelligent environmental-friendly injection molding machine

Abstract

The invention belongs to the field of auxiliary machine equipment of an injection molding machine and particularly relates to a waste heat recovery and material drying energy-saving system for an intelligent environmental-friendly injection molding machine, which comprises a heat insulation heat collecting device, an air pump, an electromagnetic valve, an auxiliary heater, an intelligent electriccabinet and a filtering device and is characterized in that the heat insulation heat collecting device is matched with a gun barrel of the injection molding machine, a waste heat gas conveying pipeline is arranged between an upper opening of a material drying barrel and the gun barrel of the injection molding machine, the filtering device and the air pump are arranged on the waste heat gas conveying pipeline, a heating gas conveying pipeline is arranged between the heat insulation heat collecting device and a lower opening of the material drying barrel of the injection molding machine, a fluid collector is arranged at the lower opening part of the material drying barrel of the injection molding machine, a temperature sensor and the auxiliary heater are arranged in the fluid collector, a waste heat gas conveying branch is connected between the output end of the air pump of the waste heat gas conveying pipeline and the fluid collector arranged at the lower opening of the material dryingbarrel of the injection molding machine, the electromagnetic valve is arranged on the waste heat gas conveying branch, the heating gas conveying pipeline and the waste heat gas conveying branch are respectively communicated with the fluid collector, and the temperature sensor, the air pump, the electromagnetic valve and the auxiliary heater are respectively connected with the intelligent electriccabinet. The waste heat recovery and material drying energy-saving system has the characteristics that the structure is simple, the use is convenient, and the waste heat utilization rate is high.

Description

technical field [0001] The invention belongs to the field of injection molding machine auxiliary equipment, and in particular relates to an energy-saving system for recovering waste heat from an intelligent and environment-friendly injection molding machine and drying materials. Background technique [0002] During the production process of the injection molding machine, after the plastic raw material enters the drying barrel on the upper right of the injection molding machine to dry, the heating ring arranged on the screw barrel heats and melts the plastic raw material, and the screw pushes it to the mold for injection molding. Therefore, on the one hand, the dryer adopts a high-power electric heating tube, and uses a blower to blow the generated hot air into the barrel to dry the material, and the electric energy becomes heat energy, which consumes a lot of energy. The heat is blown out from the upper opening of the drying barrel; on the other hand, the heating ring of the...

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Problems solved by technology

[0003] At present, the device for recovering the barrel to the drying barrel on the market is only modified on the basis of the original traditional dryer (drying barrel). For example, the new type of heat preservation and heat collection recovery device for injection molding machines with Chinese patent number 200920237778.9 has the following disadvantages: 1. Compared with the original traditional dryer (drying material barrel), an air pump is added, and the power consumption of the machine itself is increased. In order to control the air volume to achieve the best energy-saving effect, the power of the air pump is relatively small, which leads to the heat energy of the heat collecting cover. 2. The hot air from the heat collecting hood will pass through the confluence to the second heat collecting circuit, causing the hot air to circulate in the two circuits without concentrating the wind to dry the material. The effect of drying material is not ideal 3. The starting end of the second heat collecting circuit is connected to the upper opening of the drying material barrel of the injection molding machine through a bifurcation, which will cause the dust from the drying material b...

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