A small vent structure

Abstract

The invention provides a small tuyere structure comprising a tank, a filter, a sealing support structure and a diffusion plate. The filter is supported in the sealing support structure. The small tuyere structure is characterized in that a position, located at a height of the sealing support structure, of the tank, protrudes inwardly to form an upper horizontal flange and a longitudinal ribbed strip, both the upper horizontal flange and the longitudinal ribbed strip are of a two-layered structure, the outer wall of the upper portion of the tank is in arc transition connection with the upper layer of an upper inner horizontal flange, the upper layer of the upper inner horizontal flange, the inner layer of the longitudinal ribbed strip, the outer layer of the longitudinal ribbed strip and the lower layer of the upper horizontal inner flange are in continuous arc transition connection in sequence, the lower layer of the upper horizontal inner flange is in continuous connection with the outer wall of the lower portion of the tank, and the lower portion of the tank is in continuous connection with a lower outer horizontal flange. The small tuyere structure is simple in manufacturing and good in sealability, so that accuracy of overall dimensions is guaranteed and molding precision of equipment is ensured.

Description

technical field [0001] The invention relates to the technical field of air purification equipment vent structure, in particular to a small-sized tuyere structure. Background technique [0002] There is a filter inside the small tuyere, and the filter needs to be sealed with the box. The sealing structure needs structural support and fastening. The existing small tuyere is completed by welding the knife-edge flange on the inner wall of the box. The knife-edge method The flange and the box body are respectively bent and formed by a bending machine. The inner side of the knife-edge flange is the edge strip, the upper part is the flange surface, the outer side is the welding connection surface, the lower part is also the flange surface, and the upper flange surface is tight. Solid connection and sealing support structure, the lower flange surface is fastened to the diffuser plate, because the knife-edge flange and the box body are welded and positioned after being processed sepa...

AI Technical Summary

Problems solved by technology

[0002] There is a filter inside the small tuyere, and the filter needs to be sealed with the box. The sealing structure needs structural support and fastening. The existing small tuyere is completed by welding the knife-edge flange on the inner wall of the box. The knife-edge method The flange and the box body are respectively bent and formed by a bending machine. The inner side of the knife-edge flange is the edge strip, the upper part is the flange surface, the outer side is the welding connection surface, the lower part is also the flange surface, and the upper flange surface is tight. Solid connection and sealing support structure, the lower flange surface is fastened to the diffuser plate, because the knife-edge flange and the box body are welded and positioned after being processed separately, it is difficult to ensure the accuracy of the equipment's external dimensions, which affects the molding accuracy of the equipment , and the tightness of the weld can not be guaranteed

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