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Induced draft nozzle

A technology of curved pipe parts and slopes, which is applied in the field of airflow impurity separation devices, can solve the problems of inability to separate impurities well, and achieve good application value, simple structure, and good durability

Active Publication Date: 2014-08-20
盛慧忠
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the defect that the prior art cannot well separate the impurities in the airflow passing through the hosiery machine, and provides an air suction nozzle that can be easily installed on the air outlet of a blower or an air extractor. The air suction nozzle can It has a considerable effect of separating impurities in the airflow

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A suction nozzle, such as Figure 1-4 As shown, the same below, including the pipe body 10;

[0029] The pipe body 10 includes a straight pipe portion 11 and a curved pipe portion 12;

[0030] The elbow portion 12 includes a connection end 1201 and an open end 1202; the elbow portion 12 extends along the direction from the open end 1202 to the connection end 1201; along the extension direction of the elbow portion 12, the open end 1202 In the direction to the connecting end 1201, the curved pipe portion 12 has a gradually convergent cross-sectional profile 1203, the cross section is perpendicular to the extension direction of the curved pipe portion 12, and intersects with the inner side of the curved pipe portion 12 , the cross-sectional profile 1203 is an irregular surface extending along a specific curve 1204, and the specific curve 1204 includes at least one curved portion 1205 protruding toward one side of the extending direction of the curved pipe portion 12, Th...

Embodiment 2

[0035] The air suction nozzle described in Embodiment 1 is different in that the pipe body 10 further includes a transition portion 13, which is similar to the straight pipe portion 11 and the curved pipe portion 12, and is a section of pipe. Both ends of the transition portion 13 are respectively connected to the straight pipe portion 11 and the curved pipe portion 12 . In particular, the transition portion 13 is a section of curved pipe with a uniform diameter, and the curvature of the central axis of the transition portion 13 is substantially uniform, and the variation range of the curvature does not exceed ±5%. Further increase the resistance to the air flow, and increase the contact time of the air flow with the pipe wall.

Embodiment 3

[0037] The difference between the suction nozzle as described in the above embodiment is that the elbow part 12 also includes a first slope 1206 and a second slope 1207; the first slope 1206 and the second slope 1207 are along the The extension direction of the elbow portion 12 extends; the first slope 1206 and the second slope 1207 are respectively located at the two ends of the cross-sectional profile 1203 along the extension direction of the specific curve 1204; the first slope 1206 and the second slope The surfaces 1207 are respectively located between the connection end 1201 and the open end 1202 .

[0038] Further, as an optional alternative, the extension length of the first slope 1206 is not less than the extension length of the second slope 1207 . The asymmetric structure of the elbow part 12 can better disturb the airflow, increase the probability of the airflow colliding with the pipe wall of the elbow part 12, and improve the separation effect.

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PUM

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Abstract

The invention relates to an air flow impurity separation device for a hosiery machine, and discloses an induced draft nozzle. The induced draft nozzle comprises a pipe body, wherein the pipe body comprises a straight pipe portion and a bending pipe portion, the bending pipe portion comprises a connecting end and an open end, the bending pipe portion extends from the connecting end to the open end, and the bending pipe portion is provided with a gradually-converged section profile in the extending direction of the bending pipe portion. The section is a plane which is perpendicular to the extending direction of the bending pipe portion and intersects with the side face of the inner side of the bending pipe portion, the section profile is an irregular face extending along the specific curve, the specific curve at least comprises a bending portion, the bending portion protrudes to one side of the extending direction of the bending pipe portion, convergence means that the extending length of the section profile is gradually decreased, and one end of the straight pipe portion is connected with the connecting end. The air flow impurity separation device has the advantages of assuredly improving the separation efficiency, and being simple in structure and convenient to mount.

Description

technical field [0001] The invention relates to an airflow impurity separation device for a hosiery machine, in particular to an air suction nozzle, which can effectively separate impurities in the airflow containing lint and other impurities derived from the hosiery machine. Background technique [0002] Socks machine, in 1589, the British Li invented the first knitting machine, which used crochet to knit shaped socks and produced socks. Hosiery machines can be classified according to the form of the needle bed, the type of knitting needles and the number of needle cylinders (beds). The flat hosiery machine has a relatively high machine size, and produces flat hosiery pieces whose widths are changed according to the shape of the feet and legs, and are stitched into seamed socks. The size range of the round hosiery machine is wide, and the production of tubular hosiery is to adapt to the shape of the foot by changing the coil size of each section, or using elastic yarn, or ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04B35/32
Inventor 丁孝君顾晓东陈超宗叶
Owner 盛慧忠