Adjustable pulse vortex generator

Abstract

Disclosed is an adjustable pulse vortex generator. The adjustable pulse vortex generator comprises a split type shell, an inlet pipe, a pulse airflow inlet hole plate, a guide-rod-type one-way air inlet valve, a pulse airflow intensity adjusting plate, a ratchet type self-locking adjusting rod assembly, an axial rotation-starting blade pipe and an outlet adjusting pipe; and the split type shell comprises a left shell, a middle shell and a right shell which are arranged coaxially in the left-and-right direction, the axial rotating blade pipe is arranged in middle shell in the coaxial direction,lateral inlet holes are formed in the top portion of the middle shell in the radial direction, a pulse vortex rotation-starting channel is formed between the middle shell and the right side of the axial rotation-starting blade pipe, and a central hole of the axial rotation-starting blade pipe is a channel of axial airflow and materials. The adjustable pulse vortex generator is wide in applicationrange, the minimum airflow velocity of the materials can be reduced, the transmission energy consumption is reduced, the pipeline wearing is alleviated, the particle breakage is decreased, the intensity and frequency of the generated pulse vortex are adjustable, and adjustable pulse vortex generator is applied to pneumatic conveying systems of coarse particle materials.

Description

technical field [0001] The invention belongs to the technical field of pneumatic conveying, in particular to an adjustable pulse swirl generator. Background technique [0002] Pneumatic conveying technology uses high-speed airflow to realize short-distance transportation of non-cohesive bulk materials (such as flour, fly ash, wheat, etc.) in the pipeline. Pneumatic conveying has the advantages of cleanliness, environmental protection, safety, and high degree of automation, but it also has disadvantages such as large power consumption, easy material breakage, pipeline blockage, and serious pipeline wear. At present, the use of pneumatic conveying generally adopts axial airflow pneumatic conveying. In order to improve the above shortcomings, methods such as reducing the conveying speed, improving the airflow velocity distribution in the flow field, and increasing air pressure in stages can be used. Among them, pulse swirl pneumatic conveying changes the form of conveying air ...

AI Technical Summary

Problems solved by technology

[0003] The pulse swirl generating device is the key component of the pulse swirl pneumatic conveying. It is used to generate the pulse swirl. It can use electronically controlled pulse air intake, cavity self-excited oscillation, etc., but the above-mentioned methods have shortcomings. The electronically controlled pulse air intake can control the frequency and intensity of the pulse air flow more accurately, but the swirl effect cannot be guaranteed, and the control system and controls are complex. Weak and oscillating, and once the structure is determined, the generated pulse swirl cannot be adjusted

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