Pulverized coal particle detection and sampling device

Abstract

The invention relates to a pulverized coal particle detection and sampling device, and discloses a device for adjusting flow quantity of a plastic hose and detecting and sampling pulverized coal particles by adjusting an elastic rod to shrink and driving a plurality of extrusion rods to shrink cooperatively in the conveying process of pulverized coal. The device can avoid non-uniform sampling dustand can avoid influence on the gas pressure in a conveying pipe during sampling. The device is characterized in that a fixed ring is connected with a supporting ring through a plurality of elastic rod, the fixed ring and the supporting ring are coaxial, the distance between the two adjacent elastic rods is equal, each elastic rod is shaped like a 1 / 4-ring spiral line, the elastic rod is a pipe spring, the distance between the fixed ring and the supporting ring is equal to 1 / 4 screw pitch of the elastic rod, the ends of a plurality of extrusion rods are placed on the supporting ring and are distributed in the circumferential direction of the supporting ring, the extrusion rod has elasticity, the extrusion rods are placed slantways, a channel is formed among the plurality of extrusion rods,and the plastic hose is placed in the channel among the plurality of extrusion rods.

Description

technical field [0001] The invention relates to a detection and sampling device for pulverized coal particles, which relates to a device for detecting and sampling the pulverized coal lump particles when coal is used, and belongs to the field of coal mining equipment. In particular, it relates to a device for regulating the flow rate of plastic hoses and detecting and sampling coal powder particles by adjusting the shrinkage of elastic rods and simultaneously driving a plurality of extruding rods to cooperate with the shrinkage during the pulverized coal conveying process. Background technique [0002] At present, the application of coal is increasingly taking the route of clean energy. When using coal in thermal power plants and many factories that use coal, in order to make better use of the efficiency of coal, it is necessary to grind the coal into powder. It is then transported through pipelines for finishing or directly transported to power plants for heating. After the...

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Problems solved by technology

[0002] At present, the application of coal is increasingly taking the route of clean energy. When using coal in thermal power plants and many factories that use coal, in order to make better use of the efficiency of coal, it is necessary to grind the coal into powder. It is then transported through pipelines for finishing or directly transported to power plants for heating. After the coal is pulverized, the particle size of the coal powder needs to be detected. The pulverized particle size directly affects the utilization rate of the coal powder in subsequent operations. Therefore, it is necessary to Sampling the pulverized coal before the follow-up to detect the particle size of the pulverized coal. During transportation, because the pulverized coal with enlarged particles is concentrated at the bottom layer, it is difficult to sample uniformly during sampling. Collect from the surface or bottom layer The existing samples are not representative, and the existing samples are collected at both ends of the transfer pipe or cloth bag. Since it is at the inlet or outlet, the flow and chaos of pulverized coal in the pipe are the lowest at both ends. Because the pulverized coal has not been completely mixed at the inlet end, the uniformity of the sample collected is poor. The air pressure flow velocity at the outlet end is relatively high, the collection efficiency is low, and the time is long. In addition, the pipeline is tightly sealed during transportation, which will affect the internal The ventilation cannot be taken along the middle position of the pulverized coal transmission direction, and the sampling port cannot be adjusted, which will lead to the leakage of pulverized coal;

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