Flow velocity of electric heating tube powder feeder

Flow velocity of electric heating tube powder feeder

By using diodes and vibrating coils, voltage generates pulsed electromagnetic effects, achieving longitudinal vibrations with amplitudes of 1.5-3mm. The vibration intensity can be controlled by adjusting the positive voltage of the transformer switch. The vibration intensity is directly related to the powder reduction speed, and the flow speed of the electric heating tube powder feeder should correspond to the pull-up speed of the guide rod. The electric heating tube powder feeder enters the pipeline from around the guide rod, and the electric heating wire is buried from bottom to top. The function of the electric heating tube powder feeder is to keep the spiral electric heating wire of the connecting rod in the center position. After being placed in the tube, the density of the electric heating tube powder feeder can reach 2.2g/mm. The quality of electric heating tubes mainly depends on the following six factors: electrical strength, insulation, leakage current, power accuracy, lifespan, corrosion resistance, scaling, etc; Electrical strength: The main factors affecting the electrical strength of electric heating tubes are the thickness of the insulation layer, the quality of the insulation material, the length, radius, and number of twists and turns of the heating tube. Under the cold withstand voltage of the electric heating tube, the breakdown current for 2000V and 1s is generally 0.5mA. Insulation: The sealing technology of the electric heating tube affects its insulation, which can generally reach over 1000 megaohms.

Leakage current: It is related to the temperature during the use of the electric heating tube, the applied voltage of the electric heating tube, the heating length of the electric heating tube, and is an important audit indicator for high-temperature electric heating tubes. Power accuracy: mainly related to the quality of the resistance wire and the technical level of the manufacturer. Before mass production, a temperature coefficient test is required to determine the qualified cold resistance of the power scale. Service life: The service life of an electric heating tube is not only related to the quality of the resistance wire, but also to factors such as the quality of magnesium powder and the selection of resistance wire diameter. For high-temperature electric heating tubes, electric heating tubes with an external load of less than 8W/cm2 can be made. When selecting the diameter of the resistance wire, it is necessary to check whether the external load of the resistance wire meets the service life requirements. Corrosion resistance is a common issue in water heating electric heating pipes and barbecue electric heating pipes. In addition to the reasonable selection of information, it is also related to the heat treatment of the electric heating tube and the appearance of the electric heating tube.

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