Storage unit for powdery materials

Abstract

The invention provides a storage device for powdery materials. The storage device comprises a storage bin, a quantitative weighing bin and a discharging mechanism which arranged sequentially from top to bottom, the storage bin comprises a tank with an airtight containing cavity inside, a material inlet for conveying the materials into the tank is arranged on the tank, the quantitative weighing bin comprises a weighing tank communicated with a material outlet at the bottom of the tank through a control valve, and a weighing unit for monitoring total weight of the weighing tank and the materials therein, the weighing unit comprises a weighing sensor, the weighing tank is arranged on a crossbeam of a supporting frame through the weighing sensor, the weighing tank and the materials therein can be weighed through the weighing sensor, and the discharging mechanism comprises a discharging valve communicated with a discharging port at the lower end of the weighing tank. By using the storage device, the technical problem of various potential hazards like over-large or over-small storage quantity, blockage and caking and spontaneous combustion of coal powder in the storage process of the coal powder in the prior art can be solved.

Description

technical field [0001] The invention relates to a device for storing powdery materials, in particular to a storage device for powdery materials for storing and quantitatively outputting pulverized coal. Background technique [0002] At present, raw coal is still mainly used as fuel for power generation in my country, that is, most of the current power plant boilers use pulverized coal to feed the boiler. It is related to the normal operation of the boiler and even the entire power generation system. If the pulverized coal bunker overflows when the material level is too full, it will cause coal leakage accidents; if the pulverized coal bunker is too low or empty, it will cause unstable combustion or even shut down the boiler for fire fighting. Therefore, in order to meet the requirements of boiler fuel use, it must be safe, reliable, continuous, accurate and stable throughout the pulverized coal storage and supply process. In order to meet the above requirements, whether the pa...

AI Technical Summary

Problems solved by technology

[0002] At present, raw coal is still mainly used as fuel for power generation in my country, that is, most of the current power plant boilers use pulverized coal to feed the boiler. It is related to the normal operation of the boiler and even the entire power generation system. If the pulverized coal bunker overflows when the material level is too full, it will cause coal leakage accidents; if the pulverized coal bunker is too low or empty, it will cause unstable combustion or even shut down the boiler for fire fighting. Therefore, in order to meet the requirements of boiler fuel use, it must be safe, reliable, continuous, accurate and stable throughout the pulverized coal storage and supply process. In order to meet the above requirements, whether the parameter configuration of the pulverized coal storage and supply system is reasonable, Accuracy is the key to the normal operation of the entire boiler system, so it must be treated with caution

[0003] In the existing pulverized coal storage system, due to technical defects and lack of effective preventive measures, there are often too much or too little storage, blockage and agglomeration, and even spontaneous combustion in the pulverized coal bin, which leads to The pressure in the warehouse is too high and there is a risk of warehouse explosion. In addition, in the current pulverized coal supply process, not only must the pulverized coal not block the supply pipeline and equipment, but also quantitative and accurate feeding should be carried out according to the production requirements. The development of the powder storage system is limited. Most manufacturers directly store materials in the pulverized coal bin. The pulverized coal is easy to block and agglomerate in the pulverized coal bin and the powder filling pipe, and factors such as vibration generated by the operation of other parts of the system will affect the accuracy of the weighing device. Therefore, it is difficult to achieve non-blocking and accurate weighing at the same time. Therefore, in view of the above problems existing in the existing pulverized coal storage system, it is urgent to develop a storage device that is safe, reliable, stable in operation and accurate in weighing. practical needs

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