Automatic continuous gas-fueled tea leaf baking machine and control method

Abstract

The invention relates to an automatic continuous gas-fueled tea leaf baking machine and a control method. The automatic continuous gas-fueled tea leaf baking machine comprises a PLC control unit, a baking unit, a feeding unit for automatically and quantitatively supplying tea leaves to the baking unit, and a discharging unit for automatically conveying the baked tea leaves of the baking unit to anext process. The automatic continuous gas-fueled tea leaf baking machine can execute automatic and quantitative feeding and automatic discharging, safety measures such as flame extinguishing alarming, gas leakage alarming and automatic gas supply stop in the baking process are achieved by adding a flame detector and a gas sensor, automatic and continuous tea leaf baking is achieved, the production efficiency and the continuity and safety of a production line are greatly improved, and safe production is ensured. In addition, the baking unit adopts an upper and lower heating combined gas heating way, and the tea leaf baking efficiency and the quality of tea are greatly improved.

Description

technical field [0001] The invention belongs to the field of tea processing equipment, and in particular relates to an automatic continuous gas-fired tea roasting machine and a control method. Background technique [0002] Roasting the tea can reduce the moisture content of the tea, increase the aroma of the tea, reduce the greenness and astringency of the tea, and improve the taste of the tea. It is especially suitable for the tea that has been refrigerated. Re-baking before leaving the warehouse for packaging is conducive to maintaining the quality of the tea. The roasting of tea leaves is mainly done by tea roasting machines. At present, this kind of machinery is baked intermittently, requiring manual weighing and loading and unloading of tea. The degree of automation is low, and continuous production cannot be achieved, which affects the continuous production of the entire production line. According to the different heat sources, tea roasters with clean energy mainly inc...

AI Technical Summary

Problems solved by technology

At present, there are problems in the infrared electric heating tea roasting machine: the electric heating power is large, the energy consumption is large, and the remote area is limited by the power of the transformer, and the voltage is unstable, which affects the quality of the tea baking, which is not conducive to the promotion and use of the tea roasting machine; high-power electric heating Components, the rated working current is large, the line loss is large, the thermal efficiency is low, and the insulation is not easy to guarantee, it is easy to leak electricity, and there are potential safety hazards; the infrared electric heating tube has weak penetration ability, and the heat radiation is not easy to penetrate the tea during the baking process. Baking results are not good

Problems existing in the current gas-fired tea roasting machine: the tubular burner is located in the center of the roasting drum, which belongs to the upper heating method, and the hot air generated will be concentrated on the upper part of the roasting drum due to its small specific gravity, while the tea leaves are in the lower part of the roasting drum, resulting in low thermal efficiency and low energy consumption. The capacity can be increased; the burner and control system lack safety devices, and there are problems such as accidental flameout and gas leakage during the working process, which cause safety hazards; when the baking drum rotates, it produces a tea-turning effect, which is conducive to uniform baking of tea, but it is also easy to produce tea powder , the current roasting drum-type tea roasting machine cannot clear out the tea powder in time and is easy to be scorched to produce burnt smell, which affects the quality of tea

The above problems have hindered the application of roasting machines in tea production lines, resulting in the inability to achieve continuous and automated production in the tea roasting process

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