Fixed main nozzles for air jet looms

Abstract

The invention discloses a fixed main spray nozzle for an air jet loom, and relates to the technical field of the air jet loom. The technical scheme of the invention has the key points that the fixed main spray nozzle comprises a body; a yarn inlet hole for weft yarns to pass through is formed at the center of the body; an air inlet hole communicated to the yarn inlet hole is formed on the side wall of the body; an elastic filter screen is mounted inside the air inlet hole, and the filter screen is used for filtering compressed air; a plurality of swinging parts for impacting the filter screenare circumferentially and uniformly arranged inside the air inlet hole; a driving part for applying a pushing force to the plurality of swinging parts is arranged inside the air inlet hole. In the process of using the fixed main spray nozzle, the swinging parts can swing under the action of the driving part; in the swinging process of the swinging parts, the swinging parts can be in contact with the filter screen and knock away impurities attached to the filter screen, so that filtering holes on the filter screen are difficult to block, flow rate loss is low in the process that compressed airflow passes through the filter screen, and the compressed air can drive the weft yarns to move for a long distance.

Description

technical field [0001] The invention relates to the technical field of air-jet looms, in particular to a fixed main nozzle of an air-jet loom. Background technique [0002] At present, the Chinese patent with the notification number CN107675337A discloses an air-jet weft insertion mechanism capable of improving accuracy, including yarn bobbins, weft yarns, yarn guides, fixed main nozzles, swinging main nozzles, special-shaped reeds, and auxiliary nozzles. The weft yarn is exported to the fixed main nozzle through the yarn guide, and the weft yarn ejected from the fixed main nozzle is introduced into the oscillating main nozzle, and the weft yarn exported from the oscillating main nozzle passes through the reed hole of the special-shaped reed, and is connected to the shed along the reed hole of the special-shaped reed. [0003] During use, it is necessary to connect the air compressor to the inner cavity of the fixed main nozzle, and inject compressed air into the fixed main ...

AI Technical Summary

Problems solved by technology

[0004] However, as the use time increases, more impurities are attached to the filter, and the filter holes on the filter are easily blocked by impurities.

In this way, when the compressed air flows through the filter screen, the flow rate loss of the compressed air is relatively large, and when the compressed air drives the weft yarn to move, the compressed air can only drive the weft yarn to move a short distance

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