Device for stably and continuously discharging solid bulk material

Abstract

The invention relates to a device for stably and continuously discharging a solid bulk material, which comprises a multi-blade spiral flow controller, wherein the multi-blade spiral flow controller isformed by circularly arraying a plurality of spiral blades along a rotating shaft, and a bulk material disturbing device is arranged at the top of the multi-blade spiral flow controller so as to prevent a material bridge from being blocked. The bottom of the multi-blade spiral flow controller is provided with a driving gear disc which is used for driving the multi-blade spiral flow controller torotate. The outer side of the multi-blade spiral flow controller is provided with a shell of a discharging device, a driving motor is fixed on the shell, and one end of the driving motor is connectedwith the gear disc. The device can achieve the integral flow of the bulk material at the upper part of the discharging device without material deflection or intermittent discharging. The discharging device can achieve continuous discharging of the material and can change the spiral rotating speed according to the flow speed of the materials with different requirements, the number of spiral bladesand the pitch length can be designed according to different bulk flow characteristics, the device has wide control range of the flow speed of the materials, and can achieve millimeter-level flow speedcontrol of the materials.

Description

technical field [0001] The invention relates to a discharge device, especially for discharge or flow control of powdery, massive or mixed materials, mainly used for high-temperature bulk heat exchanger discharge, to realize gravity-driven solid bulk Overall flow and millimeter-level speed control in the heat exchange section of the material heat exchanger. Background technique [0002] In the process of modern industrial production, a large amount of bulk or powder bulk materials to be cooled or heated will be produced. For example, my country's metallurgy, building materials and other industries produce more than 4.5 billion tons of high-temperature bulk materials every year, and the residual heat exceeds 100 million tons of standard coal. At present, the indirect cooling methods for high-temperature solid bulk materials produced in industry mainly include tube-row heat exchangers and plate heat exchangers, which rely on gravity to drive high-temperature materials to flow a...

AI Technical Summary

Problems solved by technology

For bulk materials with a relatively large proportion of powder, due to their high cohesive force, problems such as arching and bridging are likely to occur due to the smoothing effect of the discharger blades when they flow out of the heat exchanger, making the materials unable to move continuously and seriously flow blockage

At the same time, it is difficult for the above-mentioned discharge device to achieve millimeter-level control of the flow rate, which makes it difficult to improve the heat recovery efficiency of the heat exchange section and to achieve safe and efficient production

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