Multi-parallel cyclone unit with online sampling device and online sampling method

Abstract

The invention relates to the technical field of cyclone application, in particular to a multi-parallel cyclone unit with an online sampling device and an online sampling method. The multi-parallel cyclone unit comprises a support, a distribution cylinder is arranged in the middle of the support, a feeding port is formed in the lower end of the distribution cylinder, multiple parallel cyclones arearranged on the distribution cylinder, feeding pipes of the cyclones communicate with the side wall of the distribution cylinder through distribution branch pipes, and distribution sampling valves arearranged on the distribution branch pipes. The multi-parallel cyclone unit is characterized in that each distribution sampling valve is composed of a valve body, a sealing ring, a gate plate, supporting rods, an air cylinder, a piston, a solenoid valve and an air source, wherein the solenoid valve is arranged to be a three-position five-way solenoid valve, an A position sensor, a B position sensor and a D position sensor are sequentially arranged on the outer wall of the air cylinder from top to bottom, and the inflation and deflation volume of the solenoid valve is controlled through a controller to adjust the opening amplitude and position of the gate plate in the valve. The multi-parallel cyclone unit has the advantages of being simple in structure, capable of achieving convenient online sampling, good in sampling effect, high in sampling efficiency and the like.

Description

technical field [0001] The invention relates to the technical field of hydrocyclone application, in particular to a multi-parallel hydrocyclone unit with an online sampling device and an online sampling unit with simple structure, convenient sampling, good sampling effect, high sampling efficiency, and online sampling method. Background technique [0002] As we all know, cyclones are widely used in mining, metallurgy, power environmental protection, petroleum, chemical and food industries. Cyclones usually use water as the medium and rely on external pumps or gravity fields to deliver power. Using the rotating flow field can accelerate the settling velocity of solid particles in the water medium and increase the difference in the settling velocity of coarse and fine particles in the water medium, thereby achieving The rapid separation and classification of particles of different sizes has the advantages of small equipment size, large processing capacity and high separation ...

AI Technical Summary

Problems solved by technology

The sampling of the overflow product and the underflow product of the cyclone is relatively convenient, and the overflow product and the underflow product can be directly taken from the overflow discharge pipe and the underflow discharge pipe of the cyclone operating platform respectively, but the feed to the cyclone Accurate sampling of samples is still difficult

[0004] At present, there are several commonly used methods for sampling the feed of the cyclone. The first is to take the feed sample at the feed pump tank of the cyclone. Because the slurry in the feed pump tank will settle, resulting in Sampling samples are often not representative

Another method is to take the cyclone feed sample at the blowdown branch pipe of the feed pump of the cyclone. Due to the difference in diameter between the blowdown pipe and the main pipe, the concentration and particle size of the slurry discharged from the blowdown pipe are different from those in the main pipe. There is a large difference, which makes the sampling sample not representative

Another sampling method is to set a small sampling tube on the distributor of the cyclone. Due to the installation position of the sampling tube, the size of the pipe diameter and the operating pressure of the cyclone, the concentration and particle size of the sampled slurry will vary. The difference from the actual value is very large, and the control valve of the sampling pipe is very easy to block

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