A two-way adjustable multipurpose vortex spinner

Abstract

A bi-directionally adjusted multipurpose vortex flow swirler comprises a split shell, an air inlet adjusting ring, an axial swirling impeller and an air outlet adjusting pipe. A main air inlet and an air outlet are formed in the left end and right end of the split shell. The axial swirling impeller is arranged in the split shell. The air inlet adjusting ring is arranged at the left end of the axial swirling impeller, and the air outlet adjusting pipe is arranged at the right end of the axial swirling impeller. The split shell comprises an upper shell body and a lower shell body. The axial swirling impeller comprises a central sleeve and a spiral blade arranged on the outer wall of the central sleeve. An axial airflow channel is formed in the central sleeve. A vortex airflow channel is formed between the upper shell body and the axial swirling impeller and between the lower shell body and the axial swirling impeller. The upper shell body is provided with an auxiliary air inlet, and a plug screw is arranged in the auxiliary air inlet. The bi-directionally adjusted multipurpose vortex flow swirler is wide in application range, can reduce the minimum conveying speed of particles, reduce pipeline abrasion, reduce particle crushing and avoid pipeline blockage, and enables the intensity of generated vortex flow and distribution of the flow field speed to be adjustable.

Description

Technical field [0001] The invention belongs to the technical field of pneumatic conveying, and in particular relates to a two-way adjustable multi-purpose vortex swirler. 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 shortcomings such as high power consumption, easy material breakage, pipeline blockage, and serious pipeline wear. At present, pneumatic conveying generally adopts axial air-flow pneumatic conveying. In order to improve the above-mentioned shortcomings, methods such as reducing the conveying speed, improving the airflow velocity distribution in the flow field, and segmented air supplement and boost are used. Among them, the pneumatic conveying of the vortex airflow cha...

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Problems solved by technology

[0003] The swirler is a key component of the pneumatic conveying of the vortex flow. It is used to generate the vortex flow field. It often adopts the forms of radial spiral blades, tangential air intake and spiral pipe wall, but the above-mentioned methods have shortcomings. , radial spiral blades can generate strong vortex airflow, but there are blades in the middle, so it cannot be used in the occasions where materials pass through the pipeline, generally only used at the air inlet position; the tangential air intake method is suitable for a wide range of occasions, but the turbulent The energy loss is large, and once the structure is determined, the generated vortex flow field intensity and air velocity distribution are not easy to adjust; the spiral pipe wall can be used in the pipeline where materials pass through, but the swirl intensity is weak and the air velocity distribution is completely controlled by the pipe wall Structural decisions and cannot be adjusted

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