WO2020147513A1

WO2020147513A1 - Nozzle for water jet loom

Info

Publication number: WO2020147513A1
Application number: PCT/CN2019/127099
Authority: WO
Inventors: 李勇; 王安俭; 邢相虎; 刘井然
Original assignee: 王安俭
Priority date: 2019-01-17
Filing date: 2019-12-20
Publication date: 2020-07-23
Also published as: CN109487417A

Abstract

A nozzle for a water jet loom, comprising a nozzle main body (1) and a water supply channel (2) for supplying water to the nozzle main body, the axial direction of the nozzle main body (1) being perpendicular to the axial direction of the water supply channel (2), and the nozzle main body (1) being provided with a water inlet hole (11) perpendicular to the axial direction thereof. As the axial direction of the water inlet hole (11) on the nozzle main body is parallel to and does not coincide with the axial direction of the water supply channel (2), water entering from the water supply channel (2) does not directly enter the water inlet hole (11). Instead, the water is blocked by a side wall of the nozzle main body located between the water inlet hole (11) and the water supply channel (2), so as to avoid the generation of turbulence, so that the water in the nozzle main body is ejected stably and at a high speed in a rectified flow state, thereby avoiding product quality problems.

Description

Invention Title: Nozzle for Water Jet Loom

Technical field

[0001] The present invention relates to the technical field of textile machinery, in particular to a nozzle for a water jet loom.

Background technique

[0002] In the spray chamber of the automatic loom, spray water and the weft are sprayed from the weft insertion nozzle on the side of the loom. With the increasing demand for wide, thick yarns and high-speed knitting, we usually choose to increase the pressure of the weft insertion pump to increase the speed and volume of water injection. However, if the pressure of the weft insertion pump increases, turbulence will be generated in the weft insertion nozzle. When this turbulence occurs, the sprayed water tends to spread, which can cause product defects such as increased fluff.

Summary of the invention

technical problem

Solution to the problem

Technical solution

[0003] The present invention provides a nozzle for a water jet loom, which is used to solve the technical problem of turbulence in the nozzle in the prior art.

[0004] The present invention provides a nozzle for a water jet loom, comprising a nozzle body and a water supply channel for supplying water to the nozzle body, the axial direction of the nozzle body is perpendicular to the axial direction of the water supply channel; The nozzle body is provided with a water inlet hole perpendicular to its axial direction, and the axial distance between the water inlet hole and the water supply channel is greater than 5 mm

[0005] In one embodiment, the nozzle body is provided with an end with a reduced diameter, and a first flow channel is formed between the end with a reduced diameter and the water supply channel, wherein the upstream of the first flow channel The side is connected with the water supply channel, and the downstream side is connected with the water inlet.

[0006] In one embodiment, the end of the upstream side and the end of the downstream side of the first flow passage are connected perpendicularly to the end of the water supply channel and the end of the water inlet, respectively.

[0007] In one embodiment, the water inlet holes are arranged at equal intervals along the axial direction of the nozzle body.

[0008] In one embodiment, a yarn guide tube is provided inside the nozzle body, and the nozzle body and the A second flow path is provided between the yarn guide tubes, the upstream side of the second flow path is connected to the water inlet hole, and the downstream end of the second flow path is close to the ejection port of the yarn guide tube. One end.

[0009] In one embodiment, the end on the upstream side of the second flow channel is vertically connected to the end of the water inlet hole.

[0010] In one embodiment, the length of the first flow channel in the axial direction is less than or equal to the length of the second flow channel in the axial direction.

[0011] In one embodiment, the length of the first flow channel in the axial direction is 6-10 mm, and the length of the second flow channel in the axial direction is 10-15 mm.

[0012] In one embodiment, the downstream end of the yarn guide tube forms a threaded connection with the nozzle body.

[0013] In one embodiment, the taper angle at which the upstream end of the yarn guide tube contracts to the downstream end is 5°-12°.

Beneficial effects of invention

Beneficial effect

[0014] Compared with the prior art, the advantage of the present invention is that: Since the axial direction of the water inlet hole on the nozzle body is parallel and does not overlap with the axial direction of the water supply channel, the water entering from the water supply channel will not directly Into the water inlet hole, it is obstructed by the side wall of the nozzle body between the water inlet hole and the water supply channel, so as to avoid turbulence, so that the water in the nozzle body can be stably and at high speed in a rectified state. Spray out to avoid product quality problems.

Brief description of the drawings

BRIEF DESCRIPTION

[0015] Hereinafter, the present invention will be described in more detail based on embodiments and with reference to the accompanying drawings.

[0016] FIG. 1 is an axial cross-sectional view of a nozzle for a water jet loom in an embodiment of the present invention;

[0017] FIG. 2 is a schematic diagram of the middle water flow direction of a nozzle for a water jet loom in an embodiment of the present invention.

[0018] In the drawings, the same components use the same reference signs. The drawings are not drawn to actual scale.

[0019] Reference signs:

[0020] 1-Nozzle body; 2-Water supply channel; 3-First flow channel; 4-Second flow channel; 5-Yarn guide tube; 6-Compressed air tube

[0021] 11-water inlet; 12-air inlet; 13-injection port; 14-guide ring. Invention embodiment

Embodiments of the invention

[0022] The present invention will be further described with reference to the accompanying drawings.

[0023] As shown in FIG. 1, the present invention provides a nozzle for a water jet loom, comprising a nozzle body 1 and a water supply channel 2 for supplying water to the nozzle body 1. The axial direction of the nozzle body 1 and the axial direction of the water supply channel 2 The direction is vertical; the nozzle body 1 is provided with a water inlet 11 perpendicular to its axial direction, and the axial distance between the water inlet 11 and the water supply channel 2 is greater than 5 mm. In order to ensure uniform water inflow, the water inlet holes 11 are arranged at equal intervals along the axial direction of the nozzle body 1.

[0024] The nozzle body 1 is provided with an end with a reduced diameter, and a first flow channel 3 is formed between the end with a reduced diameter and the water supply channel 2. The upstream side of the first flow channel 3 is connected with the water supply channel 2, and the downstream side is connected with the water supply channel 2. Water inlet 11 connected

[0025] Further, the end on the upstream side and the end on the downstream side of the first flow channel 3 are vertically connected to the end of the water supply channel 2 and the end of the water inlet 11, respectively. As shown by the solid arrow in Figure 2, it is the direction of water flow. Since the axial direction of the first flow channel 3 is perpendicular to the axial direction of the water supply channel 2, the water flow entering the first flow channel 3 through the water supply channel 2 The direction was changed by 90°.

[0026] In other words, between the nozzle body 1 and the water supply channel 2, there is provided a blocking plate 12 constituting the side wall of the first flow channel 3. When the water flow from the water supply channel 2 enters the nozzle body 1, it will not directly pass through the water inlet. The hole 11 enters but is obstructed by the blocking plate 12, so that its flow direction changes, that is, it flows from the upstream side to the downstream side of the first flow channel 3 so as to be able to enter the water inlet hole 11.

[0027] The nozzle body 1 is provided with a yarn guide 5, a second flow channel 4 is provided between the nozzle body 1 and the yarn guide 5, and the upstream side of the second flow channel 4 is connected to the water inlet 11, and the second The downstream end of the runner 4 is an end close to the ejection port of the yarn guide 5.

[0028] Further, the end of the upstream side of the second flow channel 4 and the end of the water inlet 11 are vertically connected. Similarly, the direction of the water flow entering the second flow channel 4 from the water inlet 11 is also changed by 90°, so that the direction of the water flow in the second flow channel 4 (to the left) is the same as the direction of the water flow in the first flow channel 3 ( To the right) On the contrary, the turbulence in the second flow channel 4 can be reduced or even eliminated.

[0029] Therefore, the difference between the present invention and the prior art is that the water from the water supply channel 2 in the present invention does not directly enter the second flow channel 4 of the nozzle body 1, but first enters the first flow channel 3 and passes through the first flow channel. 3 sidewall blocking The obstruction of the plate 12 causes it to flow in the first flow channel 3, and the water flow of the first flow channel 3 is changed again when it reaches the water inlet 11, so that the direction of the water flow entering the second flow channel 4 from the water inlet 11 is the same The direction of the water flow in the first flow channel 3 is exactly opposite, thereby suppressing the turbulence in the second flow channel 4.

[0030] In one embodiment, the length of the first flow channel 3 in the axial direction is less than or equal to the length of the second flow channel 4 in the axial direction.

[0031] Specifically, the length of the first flow channel 3 in the axial direction is 6-10 mm, and the length of the second flow channel 4 in the axial direction is 10-15 mm.

[0032] In one embodiment, the downstream end of the yarn guide tube 5 and the nozzle body 1 form a threaded connection, so that the tip position of the yarn guide tube 5 can be finely adjusted in the front and rear directions.

[0033] In one embodiment, the taper angle at which the upstream end of the yarn guide 5 contracts to the downstream end is 5°-12°.

[0034] In one embodiment, the nozzle body 1 is installed in the mounting hole of the bracket 7, and the water supply channel 2 is provided in the bracket 7. In addition, the middle part of the yarn guide tube 5 in the axial direction is arranged directly above the water supply channel 2.

[0035] In an embodiment, an air inlet 12 is further provided on the nozzle body 1 near the tip of the yarn guide 5. The pressure in the nozzle body 1 decreases with the rapid flow of water, so due to the air pressure difference, the air outside the nozzle body 1 can be sucked into the nozzle body 1 through the air inlet 12, as shown by the dotted arrow in FIG. The air flow direction is ejected along with the water flow, and the air introduced through the air inlet 12 is guided by the spray pressure of the sprayed water and the air pressure in the spray port. Therefore, the air resistance of the sprayed water can be reduced, thereby preventing the spray The diffusion of water keeps the sprayed water in a state of aggregation.

[0036] Further, the air inlet 12 is connected to the compressed air pipe 6. Air is supplied to the inside of the nozzle body 1 through the compressed air pipe 6, so that the air can be introduced into the nozzle body 1 more accurately, so that the accuracy of weft yarn delivery can be further improved by spraying water.

[0037] Further, the axial direction of the air inlet hole 12 and the axial direction of the nozzle body 1 form an acute angle. For example, 4 5°. In addition, the air intake holes 12 are distributed at equal intervals in the circumferential direction of the nozzle body 1.

[0038] In one embodiment, a guide ring 14 made of ceramic or the like is provided at the ejection port 13 of the nozzle body 1 to prevent damage to the weft yarn caused by friction.

[0039] Although the present invention has been described with reference to the preferred embodiments, without departing from the scope of the present invention, various modifications can be made to it and the components therein can be replaced with equivalents. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any manner stand up. The present invention is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

[Claim 1] A nozzle for a water jet loom, characterized in that it comprises a nozzle body a) and a water supply channel (2) for supplying water to the nozzle body (1), and the nozzle body (1) is axially The direction is perpendicular to the axial direction of the water supply channel (2); the nozzle body (1) is provided with a water inlet (n) perpendicular to its axial direction, and the water inlet (11) is connected to the water supply The axial distance between the channels (2) is greater than 5mm.

[Claim 2] The nozzle for a water jet loom according to claim 1, wherein the nozzle body (1) is provided with an end with a reduced diameter, and the end with a reduced diameter is connected to the water supply A first flow channel (3) is formed between the channels (2), wherein the upstream side of the first flow channel (3) is connected with the water supply channel (2), and the downstream side is connected with the water inlet (11).

[Claim 3] The nozzle for a water jet loom according to claim 2, wherein the first flow path

(3) The end on the upstream side and the end on the downstream side are respectively vertically connected to the end of the water supply channel (2) and the end of the water inlet (11).

[Claim 4] The nozzle for a water jet loom according to any one of claims 1 to 3, wherein the water inlet hole (11) is along the axial direction of the nozzle body (1), etc. Spacing settings.

[Claim 5] The nozzle for a water jet loom according to claim 2 or 3, wherein a yarn guide (5) is provided inside the nozzle body (1), and the nozzle body (1) A second flow path (4) is provided between the yarn guide tube (5), and the upstream side of the second flow path (4) is connected to the water inlet (11), and the second flow path The downstream end of (4) is the end close to the ejection port of the yarn guide (5).

[Claim 6] The nozzle for a water jet loom according to claim 5, wherein the second flow path

(4) The end of the upstream side is vertically connected to the end of the water inlet (11).

[Claim 7] The nozzle for a water jet loom according to claim 5, wherein the first flow path

(3) The length in the axial direction is less than or equal to the length of the second flow channel (4) in the axial direction.

[Claim 8] The nozzle for a water jet loom according to claim 7, wherein the length of the first flow path (3) in the axial direction is 6-10 mm, and the second flow path (4) ) The length along the axial direction is 10-15mm.

[Claim 9] The nozzle for a water jet loom according to claim 5, wherein the downstream end of the yarn guide tube (5) and the nozzle body (1) form a threaded connection.

[Claim 10] The nozzle for a water jet loom according to claim 5, wherein the taper angle of the yarn guide tube (5) from the upstream end to the downstream end is 5°-12°.