Automatic reversing device of fuel gas kiln

Abstract

The invention belongs to the field of glass production equipment accessory, and in particular relates to an automatic reversing device of a fuel gas kiln. The automatic reversing device comprises a master control cabinet, wherein the master control cabinet is provided with a time relay and a PLC controller, the PLC controller is externally connected with three paths of signal lines, the first path of signal line is connected with a left natural gas electromagnetic valve, a left compressed air electromagnetic valve and a right board in-place electromagnetic valve, the second path of signal line is connected with a right natural gas electromagnetic valve, a right compressed air electromagnetic valve and a left board in-place electromagnetic valve, the third path of signal line is connected with a reversing execution motor, two sides of the reversing execution motor are respectively connected with a left gate and a right gate of the kiln, the left gate and the right gate of the kiln are respectively and correspondingly provided with a left in-place sensor and a right in-place sensor, the left in-place sensor and the right in-place sensor are respectively connected with a left board in-place electromagnetic valve and a right board in-place electromagnetic valve. The in-place information of each of the left gate and the right gate can be judged through the left in-place sensor and the right in-place sensor; the reversing can be immediately stopped if one action is not in place or the operation is abnormal in the reversing process, the potential safety hazard is eliminated, and the work is stable and reliable.

Description

technical field [0001] The invention belongs to the field of glass production equipment accessories, in particular to an automatic reversing device for a gas furnace. Background technique [0002] At present, the automatic reversing system of heavy oil-burning glass furnace mainly consists of ram drive, ram position signal, PLC main control, primary and secondary atomizers, purge, heavy oil solenoid valve, etc. The main signal of this system is sent by two countdown time relays. If half an hour is defined as a commutation period, that is, the so-called half-point direction and positive point direction, after the countdown time relay reaches the time, it is given by the normally open contact of the time relay. PLC main control signal, PLC starts to work, and starts to run according to the pre-programmed program. The sequence is the gate action, closing the oil, closing the air, purging, turning on the air, turning on the oil, and then the countdown time relay starts to run, s...

AI Technical Summary

Problems solved by technology

The main signal of this system is sent by two countdown time relays. If half an hour is defined as a commutation period, that is, the so-called half-point direction and positive point direction, after the countdown time relay reaches the time, it is given by the normally open contact of the time relay. PLC main control signal, PLC starts to work, and starts to run according to the pre-programmed program. The sequence is the gate action, closing the oil, closing the air, purging, turning on the air, turning on the oil, and then the countdown time relay starts to run, so Reciprocating cycle, this kind of reversing system fully meets the requirements in oil-fired kilns, but it is more dangerous in gas-fired kilns and has fewer protection measures, so it cannot be directly applied to gas-fired kilns

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