Multiple-effect cyclone separating device

Abstract

Disclosed is a multi-effect cyclone separator. A shell of a main body of the separator comprises an upper cylinder, a spiral top cover plate and a lower reverse conical cylinder. An air exhaust pipe extends into the cylinder. An ash bin is fixed at the lower end of the reverse conical shell. An air inlet is tangentially arranged at the upper end of the cylinder through a vertical Alpha-shaped first grade pre-separating spiral tube and a second grade pre-separating spiral tube sequentially connected with each other. The cross sections of the air inlet as well as the first grade pre-separating spiral tube and the second grade pre-separating spiral tube are all rectangles. The rotation angles of the first grade pre-separating spiral tube and the second grade pre-separating spiral tube are 360 degrees and 1080 degrees respectively. A throttling steady flow wimble cone is fixed at the lower part of the cylinder. A gas suction pipe is disposed at the upper part of the ash bin, and a V-shaped ring groove is arranged in the middle of a top cover plate of the ash bin. The cyclone separator has advantages of small pressure drop, high separation efficiency to submicron particles and small scaling effect. The dust concentration during air exhaust meets the environmental protection requirements. The cyclone separator effectively eliminates the secondary flow in a flow field, and has advantages of stable flow pattern, low gas velocity, low equipment abrasion and long service life. The cyclone separator can replace cloth bags and electrostatic dust collectors to undertake the tail end dust removal of dust-laden gas.

Description

technical field [0001] The invention belongs to the technical field of cyclone separators, and more specifically relates to the innovative design of multi-effect cyclone separators. Background technique [0002] Various types of conventional and high-efficiency cyclone separators generally have problems such as short-circuit flow at the exhaust port and entrainment of the lower ash ring, and the amplification effect is significant. As the size of the separator increases, the pressure drop increases sharply and the separation efficiency drops significantly. The separation efficiency for particles below 3 μm is very low, and even particles within the range of 3 to 10 μm cannot be guaranteed to be 100% removed. Under strict environmental protection requirements, it cannot meet the requirements of terminal dust removal. [0003] In addition, various secondary flows exist in the internal flow field of various existing cyclone separators, the flow pattern is not stable enough, t...

AI Technical Summary

Problems solved by technology

As the size of the separator increases, the pressure drop increases sharply and the separation efficiency drops significantly

The separation efficiency of particles below 3 μm is very low, and even particles in the range of 3 to 10 μm cannot be guaranteed to be 100% removed

Under strict environmental protection requirements, it cannot meet the requirements of terminal dust removal

[0003] In addition, there are various secondary flows in the flow field of various existing cyclone separators, the flow pattern is not stable enough, the equipment wears a lot, and the service life is short

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