Frost suppression type powder freezing dryer

Abstract

A frost suppression type powder freezing dryer comprises a rack, a plurality of parallel multi-stage cooling loops are arranged in the rack, all the stages of cooling loops are connected to the same heat exchanger, a first induced draft fan for cooling grinding air through the heat exchanger is arranged on one side of the heat exchanger, and the position, at the outlet end of the heat exchanger, of the last stage of cooling loop is connected with a second heat exchanger in series. A post air conditioner air feeder is arranged on one side of the second heat exchanger, and the second heat exchanger is matched with the post air conditioner air feeder to form a post air conditioner assembly which creates a cooling and dust-free operation post space for workers. The system is reasonable and compact in structure, fresh air temperature of the post air conditioner assembly serves as post air conditioner air supply, the comfortable post environment is guaranteed, unit defrosting frequency and period can be reduced, fluctuation of cooling air supply temperature is reduced, system energy consumption is reduced, it is guaranteed that all gaseous refrigerants are sucked into the compressor from an outlet of the second heat exchanger, and the system energy consumption is reduced. And the air suction liquid-carrying fault of the compressor is avoided.

Description

technical field [0001] The invention relates to the technical field of processing equipment, in particular to a powder refrigerating machine, in particular to a frost-suppressing powder refrigerating machine. Background technique [0002] The traditional powder coating production process mainly includes several processes such as mixing and dispersion, melt extrusion, tablet crushing, grinding micropowder, and inspection and packaging. In the process of producing micropowder, the material is uniformly kneaded in a viscous fluid state by an extruder, and the temperature of the material is generally 90-130°C. Once again, the semi-finished sheet material can be obtained by cooling and rolling the sheet and air-cooled crushing. The material temperature is generally 35-55 ℃ when entering the grinding micropowder equipment. The tablet is physically pulverized by mechanical friction. Generally, a powder cooling dryer is used to cool down the grinding part. Since the air inlet at ro...

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the above-mentioned problems existing in the prior art, and provides a frost-suppressing powder cold dryer, which solves the problem of frequent defrosting of the current existing cold dryer units, which causes fluctuations in the outlet air temperature, the compressor sucks the air, and the cooling unit can High energy consumption, poor job environment, etc., to meet the needs of stable wind, reduce energy consumption and improve the job environment

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