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Auxiliary nozzle of air-jet loom

A technology for auxiliary nozzles and air-jet looms, which is applied in the field of auxiliary nozzles and air-flow nozzles for air-jet looms. It can solve the problems of increased operating costs, slow air flow velocity, and excessive air volume, and achieves cost savings, fast outlet flow velocity, and low air consumption. Effect

Inactive Publication Date: 2019-07-19
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The auxiliary nozzle in the prior art is usually a main air pipe, and an air outlet is provided near the top of the main air pipe to eject oblique airflow, but the flow velocity of the airflow ejected from the air outlet in the prior art is relatively slow, which leads to the realization of the induction The weft operation requires a lot of air volume, which increases the operating cost

Method used

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  • Auxiliary nozzle of air-jet loom
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  • Auxiliary nozzle of air-jet loom

Examples

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Comparison scheme
Effect test

Embodiment 1

[0041] see Figure 1 to Figure 7 , an auxiliary nozzle for an air-jet loom, comprising a main air pipe 2 and an air outlet 1, the side of the main air pipe 2 near its top is provided with an inclined pipe wall 222, and the inclined pipe wall 222 is provided with an air outlet 1 , the air outlet 1 communicates with an external air source through the main air pipe 2; the auxiliary nozzle of the air-jet loom also includes an inclined nozzle 3, and the interior of the inclined nozzle 3 is provided with a converging cavity 31 and a gradually expanding cavity 32 , the inner end of the tapering chamber 31 communicates with the gas outlet 1, the outer end of the tapering chamber 31 coincides with the inner end of the expanding chamber 32, and the outer end of the tapering chamber 32 is level with the outer end of the inclined nozzle 3 Qi, the inner end of the inclined nozzle 3 is connected with the inclined pipe wall 222. Preferably, the cross-section of the tapered cavity 31 is an i...

Embodiment 2

[0043] Basic content is the same as embodiment 1, the difference is:

[0044] The main air pipe 2 includes a main lower air pipe 21 and a main upper pipe head 22. The main lower air pipe 21 is a hollow structure with openings at both ends, and the main upper pipe head 22 is a one-way opening structure with a downward opening. The pipe head 22 includes an arc-shaped outer wall 221, a pipe head side wall 223 and an inclined pipe wall 222. The top 224 is a closed structure, and the bottom of the arc-shaped outer wall 221, the side wall 223 of the pipe head 223 and the inclined pipe wall 222 together form a bottom opening 225 of the pipe head, which is connected to the top of the main lower air pipe 21. The inclined nozzle 3 communicates with the external air source after passing through the air outlet 1, the bottom opening 225 of the pipe head, and the main lower air pipe 21 in sequence.

Embodiment 3

[0046] Basic content is the same as embodiment 2, the difference is:

[0047] The bottom end of the main lower trachea 21 communicates with the external air source after passing through the middle trachea 4 and the bottom trachea 5 successively. Port 43, the top port 41 of the middle pipe is connected to the bottom of the main lower air pipe 21, the bottom port 43 of the middle pipe is connected to the top of the bottom air pipe 5, and the area of ​​the top port 41 of the middle pipe is smaller than that of the bottom port 43 of the middle pipe area. The cross section of the main lower air pipe 21 is rectangular, the top opening 41 of the middle pipe is rectangular, the bottom opening 43 of the middle pipe is circular, and the cross section of the bottom air pipe 5 is circular. The wide side 411 of the cross section of the top opening 41 of the middle pipe is shorter than the diameter of the bottom opening 43 of the middle pipe, and the long side 412 of the cross section of t...

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Abstract

An auxiliary nozzle of an air jet loom comprises a main air pipe and an inclined spray pipe, wherein an inclined pipe wall is arranged on the portion, close to the top end, of the side portion of themain air pipe, an air outlet is formed in the inclined pipe wall and is communicated with an external air source through the main air pipe, and the inclined spray pipe is internally provided with a gradually narrowed cavity and a gradually enlarged cavity which are communicated, the inner end of the gradually narrowed cavity is communicated with the air outlet, the outer end of the gradually narrowed cavity coincide with the inner end of the gradually enlarged cavity, the outer end of the gradually enlarged cavity is flush with the outer end of the inclined spray pipe, and the inner end of theinclined spray pipe is connected with the inclined pipe wall. By adopting the design, the outlet flow velocity is high, the gas consumption is small, and the auxiliary nozzle can be suitable for lower gas supply pressure and is wider in application range.

Description

technical field [0001] The invention relates to an air flow nozzle, which belongs to the field of textile machinery, in particular to an auxiliary nozzle of an air-jet loom, which is particularly suitable for increasing the outlet flow rate and reducing the air consumption. Background technique [0002] The air-jet loom is a shuttleless loom that uses jet air to pull the weft yarn through the shed. Shed, and then achieve the purpose of weft insertion. [0003] On the special-shaped reed air-jet loom, the weft yarn passing through the shed mainly relies on dozens of auxiliary nozzles installed at a certain distance to pass through the shed in the form of relay transmission. It can be seen that the auxiliary nozzle is the key component of the air-jet loom for weft insertion. , its performance will directly affect the weft insertion quality and weaving efficiency. [0004] The auxiliary nozzle in the prior art is usually a main air pipe, and an air outlet is provided near the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D03D47/30
CPCD03D47/302
Inventor 沈敏李斯湖陈亮
Owner WUHAN TEXTILE UNIV
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