Dry burning preventing control device of fruit and vegetable ripening ethylene generator

Abstract

The invention discloses a dry burning preventing control device of a fruit and vegetable ripening ethylene generator. The dry burning preventing control device is characterized in that a raw material tank, a reaction tank and a dry burning preventing control device control circuit are disposed in a box. The control circuit is characterized in that a power supply lamp HL, a temperature controller WK, a feed relay and a relay are respectively connected between the live wire and the null wire of a 220V alternating-current power supply; the 220V alternating-current power supply is connected with a power adapter which is connected with a PLC; a button switch, a dial timer and the temperature controller are respectively connected between the cathode of the power adapter and the input end of the PLC; the relay, the feed relay and an alarm lamp HL3 are respectively connected between the anode of the power adapter and the output end of the PLC. The dry burning preventing control device has the advantages that the PLC controls equipment heating, feeding and work time, equipment automation level and temperature control temperature are increased, structure and operation are simplified, equipment reliability and stability are enhanced, heating pipe dry burning can be prevented, and long service life is achieved.

Description

technical field [0001] The invention relates to an ethylene generator for ripening fruits and vegetables, in particular to an anti-dry burning control device for the ethylene generator for ripening fruits and vegetables. Background technique [0002] In the prior art, the ethylene generator for ripening fruits and vegetables includes: a box body with a control panel, and the box body includes: a gas-liquid pipeline part and an electrical control part. [0003] The gas-liquid pipeline part includes: a raw material tank containing ethylene generator liquid, and a reaction tank connected to the raw material tank; the reaction tank is equipped with a generator liquid and an activated alumina catalyst, and a thermocouple and an electric heating tube are installed in the reaction tank; The couple measurement point is directly in contact with the electric heating tube; the thermocouple and the electric heating tube are connected to the temperature controller in the electrical contr...

AI Technical Summary

Problems solved by technology

[0005] In the above-mentioned prior art, the temperature controller and feeding controller of the electrical control part are realized by relays or solenoid valves, the degree of automation is not high, it is easy to cause delay measurement, the measured temperature value is inaccurate, and all operations are mechanically controlled. Manual operation, the error is large, it is easy to cause the equipment not to add the generating liquid to the reaction tank in time, so that the electric heating tube in the reaction tank will appear dry burning phenomenon

Images