Coating machine heating control method and coating machine

Abstract

The invention discloses a coating machine heating control method which comprises a temperature sensor, a solid relay, a single-pole single throw relay, a PLC (programmable logic controller), a switchpower supply and a heating element, wherein an on-off frequency of the solid relay is calculated through a PID (proportion integration differentiation) algorithm, and thus an effect of controlling a heating temperature can be achieved. Real-time precise control on a coating machine temperature system is achieved. The invention further discloses a coating machine which comprises an air inlet machine, a controller, a coating machine and an exhaust machine, wherein the coating machine comprises an upper tank and a lower tank; an annular mounting rack is mounted on the inner wall of the upper tank; an annular cleaning tube is arranged on the annular mounting rack. Due to adoption of the annular cleaning tube, all-closed all-direction cleaning can be achieved, a thorough cleaning effect can beachieved, different cleaning tubes can be conveniently replaced, the coating machine is convenient to mount and dismount, meanwhile, the annular cleaning tubes can be conveniently cleaned, and cross pollution can be avoided. In addition, a through hole is formed in the annular cleaning tube, the operation of a spray gun component is not interfered, and the coating machine is reasonable in structural design and good in practicability.

Description

technical field [0001] The invention belongs to the technical field of pharmaceutical equipment, and in particular relates to a heating control method for a coating machine, and also relates to a coating machine. Background technique [0002] The coating machine is an efficient, energy-saving, safe and clean mechatronic equipment that can coat tablets, pills, candies, etc. with organic film coating, water-soluble film coating, and slow-release coating. The coating machine is suitable for pharmaceutical, chemical, food and other industries. [0003] The structure of the existing coating machine mainly includes a frame and a drum. The drum is horizontally placed and mounted on the frame, and the axial ends of the drum are also provided with tapered necks. When in use, the product is placed in the drum and rotates with the drum. At this time, people introduce hot air into the drum to dry the coating medium sprayed on the surface of the product quickly and evenly, thereby formi...

AI Technical Summary

Problems solved by technology

However, the existing coating machine still has the problem of inconvenient and incomplete cleaning; it needs to be improved

[0004] For example, 201720627982.6 discloses a cleaning device for a coating machine, including a coating pot, a connecting shaft, and a fixed rod. The bottom center of the coating pot is provided with a connecting shaft, and a fixed rod is installed on the connecting shaft. The first cleaning handle, the second cleaning handle, and the third cleaning handle are sequentially arranged on the fixed rod of the coating pot inwardly. unreasonable

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