Closed-loop powder coating production system without dedusting box

Abstract

A closed-loop powder coating production system without a dedusting box comprises refrigeration equipment used for providing low-temperature air, grinding equipment used for producing powder coating and a fan used for inducing air. An air outlet of the refrigeration equipment, the grinding equipment and the air inlet end of the fan sequentially communicate with one another through transfer pipelines. The air outlet end of the fan communicates with the air inlet end of the refrigeration equipment through an inner circulation pipeline. The grinding equipment comprises a main grinder and a cyclone separator communicating with the main grinder through a transfer pipeline. A filter device used for filtering coating dust is integrated on the upper portion of the cyclone separator. The dust filtered by the filter device directly falls into the lower portion of the cyclone separator. By adoption of the closed-loop powder coating production system, the process that a worker removes dust in a regular dedusting box is omitted, meanwhile, air and noise pollution to surrounding areas is reduced during factory production, unmanned and automatic continuous production is facilitated, the coating powder utilization rate is high, the cost is further lowered, and therefore the market competitiveness of finished power coating products is finally improved.

Description

technical field [0001] The invention relates to a closed-loop powder coating production system without a dust removal box. Background technique [0002] Chinese Patent Document No. CN 203816742U disclosed a powder coating production equipment on September 10, 2014, including a main mill with a feed hopper, an air inlet and an outlet, an induced draft fan, a cyclone separator, a discharge rotary valve, Rotary screen and refrigerating machine. Compared with the usual equipment, the production equipment has changed the structure of the cyclone separator and the refrigerating machine connected with the pulverizer. The refrigerating machine is connected to the air inlet of the main mill through the air supply pipe, and the cyclone separator The bottom is connected with a discharge rotary valve and a rotary screen. The refrigerator sends cold air into the pulverizer, so that the working temperature in the pulverizer, the conveying pipeline, and the cyclone separator will be lower...

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Problems solved by technology

[0003] In the prior art, the induced draft fan of the powder coating production equipment will directly discharge the exhaust gas outside. Although the exhaust gas will be filtered before being discharged, no matter how good the filter is, it cannot completely eliminate the problem of paint dust (waste) remaining in the exhaust gas , that is to say, paint dust (waste) will still pollute the surrounding environment along with the emission of exhaust gas

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