Feeding device for gas flow equipment

Abstract

The invention discloses a feeding device for gas flow equipment. The feeding device comprises blanking units of branched cylinders, wherein the lower part of the blanking unit of one branched cylinder is provided with a discharge gas lock, and the upper part of the blanking unit is connected with a dehumidifying fan; the lower part of the blanking unit of the other branched cylinder is provided with a three-way port; the lower port of the three-way port is provided with an impurity removal gas lock, the horizontal port of the three-way port is connected with a dehumidifying process gas pipeline and a supplementary steam pipeline after being in cross connection with burner flue gas pipelines, and the upward inclination port of the three-way port is provided with a feed gas lock and a dehumidifying pipeline; the lateral cylinder of the blanking unit on the upper part of the impurity removal gas lock is provided with a charging nozzle; a cache straight pipe section with a dehumidifying hood is installed between the feed gas lock and the pipeline; and the intersection of a burner flue gas pipeline outlet and the dehumidifying process gas pipeline is provided with a heat-pipe heat exchanger. The feeding device disclosed by the invention has the functions of energy recovery, air-separation impurity removal, quantitative feeding, outlet moisture stabilization and uniform charging, and satisfies the process requirements of a gas flow drying technology in tobacco processing.

Description

technical field [0001] The invention relates to a feeding device of airflow equipment, which effectively satisfies the technical requirements of airflow drying technology in tobacco processing. Background technique [0002] At present, the problems of the air-flow shredded cigarette leaf drying equipment are as follows: First, the material conveying distance is long, and the temperature and moisture are also lost, which weakens the effect and function of preheating and regaining moisture. The second is high energy consumption. Because the airflow drying equipment uses fuel oil and gas boilers, the efficiency is about 70%. Among the wasted heat, the flue gas heat accounts for the vast majority. The flue gas temperature is 270-350°C. Such high temperature not only pollutes the environment, but also wastes a lot of fuel and increases the production cost of enterprises. In addition, the superheated steam formed by the moisture evaporated from the material is also discharged di...

AI Technical Summary

Problems solved by technology

[0002] At present, the problems of the air-flow shredded cigarette leaf drying equipment are: first, the material conveying distance is long, and the temperature and moisture are also lost, which weakens the effect of preheating and regaining moisture.

The second is high energy consumption. Because the airflow drying equipment uses fuel oil and gas boilers, the efficiency of the boiler is about 70%. Among the wasted heat, the heat of flue gas accounts for the vast majority

Such high temperature not only pollutes the environment, but also wastes a lot of fuel and increases the production cost of enterprises.

In addition, the superheated steam formed by the water evaporated from the material is also discharged directly, resulting in waste

Third, the quality of shredded tobacco (or shredded stems) fluctuates. The quality of cut shredded tobacco or shredded stems has a great influence on the filling value after expansion.

At present, the feed of cut stems is controlled by the feeder, the limit tube, and the belt scale to control the mass flow rate of the feeder, but the impurities and proportion of the incoming materials cannot be controlled. If the instantaneous incoming stems or wet lumps Excessive impurities will cause excessive dryness of qualified cut stems, resulting in fluctuations in outlet moisture

Fourth, the gap between the original air lock valve body and the rotor causes the oxygen content of the process gas in the airflow drying equipment to be relatively large

Fifth, the drum-type hot air feeding device is usually used to add feed liquid to the material, so that the normal temperature material enters the drum and feeds while heating. The heat exchange between the hot air and the material lags behind, the initial temperature of the material is low, and the effect of absorbing the feed liquid is not good. Good; at the same time, part of the atomized material liquid is easily taken away by the hot air or tidal wind, which not only causes the loss of the material liquid, but also pollutes the air duct, fan, radiator and filter screen, etc., which brings harm to the operation of the equipment and the environment. At the same time, the material will be piled forward when it is thrown through the copying plate or rake nails, it is difficult to distribute the material evenly, and the uniformity of the material liquid application is poor

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