Full-automatic control system of continuous production kiln and control method thereof

Abstract

The invention discloses a full-automatic control system of a continuous production kiln in the technical field of full-automatic control systems. The left end branch of a mixing pipe is communicated with an air guide pipe and a fuel gas guide pipe, a fuel gas proportional valve is fixedly assembled on the mixing pipe, an air conveyor and an air electric valve are sequentially and fixedly assembled on the air guide pipe from left to right, a fuel gas conveyor and a fuel gas electric valve are sequentially and fixedly assembled on the fuel gas guide pipe from left to right, an electric control box comprises a PLC, the PLC is in bidirectional electrical connection with a kiln process management module, a kiln state monitoring module and an ignition detection controller, the PLC is in electrical output connection with a wireless communication module, continuous micro change can be achieved according to self-tuning of actual flow and set flow, the flow can be accurately controlled, kiln information parameters can be controlled in real time, visual management of monitoring is achieved, transparency is high, safety is improved, and firing adjustment of the kiln to products is completed in real time.

Description

technical field [0001] The invention relates to the technical field of full-automatic control systems, in particular to a full-automatic control system for continuous production furnaces and a control method thereof. Background technique [0002] In the existing continuous production kiln (such as roller kiln, shuttle kiln, tunnel kiln), the temperature in the kiln is monitored manually in real time, and the kiln is manually adjusted according to the firing requirements and actual firing conditions of the product. The furnace is controlled, and the product is fired by adjusting the appropriate temperature and firing time. However, in order to meet the productivity, most kilns work continuously for 24 hours, so manual monitoring of the kiln is also required 24 hours a day. Operational combustion cannot achieve complete combustion of gas, and at the same time, it is inconvenient to adjust the supply amount independently during the commissioning process, which brings a lot of i...

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Problems solved by technology

[0002] In the existing continuous production kiln (such as roller kiln, shuttle kiln, tunnel kiln), the temperature in the kiln is monitored manually in real time, and the kiln is manually adjusted according to the firing requirements and actual firing conditions of the product. The furnace is controlled, and the product is fired by adjusting the appropriate temperature and firing time. However, in order to meet the productivity, most kilns work continuously for 24 hours, so manual monitoring of the kiln is also required 24 hours a day. Operational combustion cannot achieve complete combustion of gas, and at the same time, it is inconvenient to adjust the supply amount independently during the commissioning process, which brings a lot of inconvenience to the commissioning of the kiln system, which greatly affects the commissioning efficiency and accuracy of the kiln. In addition, in a separate When adjusting the ratio of gas and air, due to the separate control of oxygen and natural gas, it is impossible to successfully adjust the ratio of gas and oxygen at one time, resulting in an unstable furnace temperature curve during the adjustment process. Therefore, we propose a Fully automatic control system and control method for a continuous production kiln

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