Speed-adjustable main nozzle for air jet loom

Abstract

The utility model relates to the technical field of air-jet looms, in particular to a speed-adjustable main nozzle for an air-jet loom. Comprising a nozzle core body, a sleeve and a wire feeding pipe, a wire feeding channel is formed in the coaxial position of the nozzle core body, a drainage sleeve is arranged around the wire feeding channel, the rear end of the drainage sleeve is an air blocking part, the middle end is a drainage part, and the front end is a sealing part; according to the nozzle, the front-back position of the nozzle core body can be adjusted, the ventilation capacity can be effectively controlled, the airflow speed can be controlled, and then the weft feeding speed can be effectively controlled.

Description

Technical Field

[0001] The utility model patent relates to the technical field of air-jet looms, in particular to an adjustable-speed main nozzle for an air-jet loom. Background Art

[0002] An air-jet loom is a shuttleless loom that uses a jet of air to draw the weft yarn through the shed. Its working principle is to use air as the weft insertion medium, and the compressed air jet generates frictional traction on the weft yarn, bringing the weft yarn through the shed to achieve the purpose of weft insertion. The characteristics of an air-jet loom include high speed, large tension, and small shed, and it can adapt to various textile raw materials such as cotton, linen, silk, wool, etc., and can produce high-quality and high-yield fabrics.

[0003] The main nozzle of an air-jet loom is a key component used to eject air or a water jet to introduce the weft yarn into the shed. It is usually installed at the entrance of the left shed of the loom, and the generated jet starts the weft yarn from a stationary state and quickly flies into the shed after leaving the fixed-length weft storage device, which is the main source of the flying power of the weft yarn.

[0004] The existing patent CN115522304A mentions an accelerating main nozzle for an air-jet loom, but in actual use, this accelerating nozzle cannot achieve speed adjustment, and there is easily air residue in the air chamber. Therefore, a nozzle that can achieve speed adjustment and has no air residue in the air chamber is needed. Summary of the Invention

[0005] (I) Problems to be Solved

[0006] It is mainly used to solve the problem that the existing main nozzle cannot adjust the speed, and provides an adjustable-speed main nozzle for an air-jet loom.

[0007] (II) Technical Solutions

[0008] The adjustable-speed main nozzle for an air-jet loom of the utility model includes a nozzle core body, a sleeve, and a wire feeding tube. A wire feeding channel is provided at the coaxial position of the nozzle core body. The periphery of the wire feeding channel is a drainage sleeve. The rear end of the drainage sleeve is an air blocking part, the middle end is a drainage part, and the front end is a sealing part; the sleeve includes a gas guiding hole, and a wire feeding groove is provided inside the wire feeding tube.

[0009] As a preferred technical solution, the circumference of the air blocking part is smooth and cooperates with the sleeve. The outer diameter of the air blocking part is the same as the inner diameter of the sleeve, and the width of the air blocking part is greater than the width of the gas guiding hole.

[0010] As a preferred technical solution, the drainage part is designed with an outer arc surface, and the inner wall of the sleeve is designed with an inner arc surface. The drainage part and the inside of the sleeve form a ventilation channel.

[0011] As a preferred technical solution, the ventilation passage includes an air inlet and an air jet outlet. The air inlet is communicated with the air guide hole of the sleeve, and the air jet outlet is located at the position of the narrowest passage between the sealing part and the sleeve. The air jet outlet intersects with the wire feeding passage at the wire feeding tube.

[0012] As a preferred technical solution, the interior of the ventilation passage has an annular symmetric structure, including an air flow inlet area connected to the air inlet, an air flow guiding area, an air flow throat, and an air flow converging area. The air flow converging area is connected to the air jet outlet.

[0013] As a preferred technical solution, the air flow throat is located at the position of the narrowest passage at the air jet outlet.

[0014] As a preferred technical solution, the sealing part includes a sealing sleeve, and the sealing sleeve is made of rubber.

[0015] (III) Beneficial effects

[0016] The beneficial effects of the present utility model are as follows:

[0017] 1. By adjusting the front and rear positions of the nozzle core, the control of the ventilation volume can be effectively achieved through the air inlet. The size of the ventilation volume can control the air flow speed, and thus the wire feeding speed of the weft wire can be effectively controlled.

[0018] 2. When the nozzle core is pressed to the internal sealing position, the sealing sleeve effectively blocks the air flow passage, and there is no air residue in the air cavity, improving the wire feeding accuracy and making the wire feeding process more efficient. Description of the drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is a schematic structural diagram of the present utility model during ventilation;

[0021] Figure 2 It is a schematic structural diagram of the present utility model during air blocking;

[0022] Figure 3 It is a schematic detail diagram of the sealing part of the present utility model;

[0023] 1 - Nozzle core; 11 - Wire feeding channel; 2 - Sleeve; 21 - Air guiding hole; 3 - Wire feeding tube; 31 - Wire feeding groove; 4 - Drainage sleeve; 41 - Air blocking part; 42 - Drainage part; 43 - Sealing part; 431 - Sealing sleeve; 5 - Ventilation channel; 51 - Air inlet; 52 - Jet orifice; 53 - Air flow entering area; 54 - Air flow guiding area; 55 - Air flow throat; 56 - Air flow converging area. Detailed implementation mode

[0024] In combination with the attached drawings, a speed - adjustable main nozzle for a jet loom of the present utility model will be further described.

[0025] As attached Figure 1 As shown, a speed - adjustable main nozzle for a jet loom includes a nozzle core 1, a sleeve 2 and a wire feeding tube 3. A wire feeding channel 11 is provided at the coaxial position of the nozzle core 1. The periphery of the wire feeding channel 11 is a drainage sleeve 4. The rear end of the drainage sleeve 4 is an air blocking part 41, the middle part is a drainage part 42, and the front end is a sealing part 43. The sleeve 2 includes an air guiding hole 21, and a wire feeding groove 31 is provided inside the wire feeding tube 3.

[0026] Embodiment 1

[0027] Further, the circumference of the air blocking part 41 is smooth and matches with the sleeve 2. The outer diameter of the air blocking part 41 is the same as the inner diameter of the sleeve 2, and the width of the air blocking part 41 is greater than the width of the air guiding hole 21. When the nozzle core 1 is at an outer - side angle, the air blocking part 41 does not block the air guiding hole 21, and the air guiding hole 21 is directly connected to the external air intake.

[0028] Further, the drainage part 42 is designed with an outer arc surface, and the inner wall of the sleeve 2 is designed with an inner circular arc surface. The drainage part 42 and the inside of the sleeve 2 form a ventilation channel 5. The ventilation channel 5 is connected to the air guiding hole 21, and the gas directly enters the ventilation channel 5 from the air guiding hole 21.

[0029] Further, the ventilation channel 5 includes an air inlet 51 and a jet orifice 52. The air inlet 51 is connected to the air guiding hole 21 of the sleeve 2. The jet orifice 52 is located at the narrowest channel position between the sealing part 43 and the sleeve 2. The jet orifice 52 intersects with the wire feeding channel 11 at the wire feeding tube 3. The gas in the ventilation channel 5 is guided to the jet orifice 52 through the air inlet 21 and then ejected from the jet orifice 52. The gas intersects with the weft yarn at the wire feeding tube 3, and under the push of the gas, the weft yarn is fed forward.

[0030] Further, the inside of the ventilation channel 5 has an annular symmetric structure, including an air flow entering area 53 connected to the air inlet 51, an air flow guiding area 54, an air flow throat 55 and an air flow converging area 56. The air flow converging area 56 is connected to the jet orifice 52. The guiding process of the gas after entering through the air inlet 21 is: from the air flow entering area 53 to the air flow guiding area 54 to the air flow throat 55 and finally ejected from the air flow converging area 56, so that the weft yarn is fed forward.

[0031] Embodiment 2

[0032] As shown in the attached Figure 2 figure, it shows the air-blocking situation of the nozzle core 1 inside. Further, the circumference of the air-blocking part 41 is smooth and matches with the sleeve 2. The outer diameter of the air-blocking part 41 is the same as the inner diameter of the sleeve 2, and the width of the air-blocking part 41 is greater than the width of the air guide hole 21. When the nozzle core 1 is at an inner angle, the air-blocking part 41 blocks the air guide hole 21, and air cannot directly enter from the outside through the air guide hole 21.

[0033] Further, the drainage part 42 is designed with an outer arc surface, and the inner wall of the sleeve 2 is designed with an inner arc surface. The drainage part 42 and the inside of the sleeve 2 form an air passage 5. At this time, the air passage 5 is blocked and there is no gas in it.

[0034] Further, the air passage 5 includes an air inlet 51 and an air jet port 52. The air inlet 51 is connected to the air guide hole 21 of the sleeve 2, and the air jet port 52 is located at the position of the narrowest passage between the sealing part 43 and the sleeve 2. The air jet port 52 intersects with the wire feeding channel 11 at the wire feeding tube 3. The sealing sleeve 431 of the sealing part 43 abuts against the inner wall, preventing further gas flow.

[0035] Further, the inside of the air passage 5 is of an annular symmetric structure, including an air flow inlet area 53 connected to the air inlet 51, an air flow guiding area 54, an air flow throat 55, and an air flow converging area 56. The air flow converging area 56 is connected to the air jet port 52. When air is blocked, the gas does not flow and there is no residual gas in the air cavity.

[0036] As shown in the attached Figure 3 figure, further, the air flow throat 55 is at the position of the narrowest passage at the air jet port 52.

[0037] Further, the sealing part 43 includes a sealing sleeve 431, and the sealing sleeve 431 is made of rubber.

[0038] The working principle of the present utility model is as follows: When the air-blocking part 41 of the nozzle core 1 does not block the air guide hole 21, the air passage 5 is connected to the air guide hole 21, and air directly enters the air passage 5 from the air guide hole 21. The air in the air passage 5 is guided to the air jet port 52 through the air inlet 21 and then ejected from the air jet port 52. The air intersects with the weft wire at the wire feeding tube 3, and under the push of the air, the weft wire is fed forward; when the air-blocking part 41 of the nozzle core 1 blocks the air guide hole 21, air cannot enter the air passage 5 from the air guide hole 21. At this time, the air passage 5 is blocked and there is no gas in it. The sealing sleeve 431 of the sealing part 43 abuts against the inner wall, preventing further gas flow.

[0039] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and do not limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various variations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention should all fall within the protection scope of the present invention. The technical content claimed by the present invention has been fully recorded in the claims.

Claims

1. A speed-adjustable main nozzle for an air jet loom, characterized in that: The invention comprises a nozzle core (1), a sleeve (2) and a wire feeding tube (3); the nozzle core (1) is provided with a wire feeding channel (11) at a coaxial position; the wire feeding channel (11) is surrounded by a drainage sleeve (4); the drainage sleeve (4) has an air blocking portion (41) at the rear end, a drainage portion (42) at the middle end and a sealing portion (43) at the front end; the sleeve (2) comprises an air guide hole (21); and the wire feeding tube (3) has a wire feeding groove (31) inside.

2. The speed-adjustable main nozzle for an air jet loom according to claim 1, characterized in that: The air blocking portion (41) has a smooth circumference and matches the sleeve (2). The outer diameter of the air blocking portion (41) is consistent with the inner diameter of the sleeve (2). The width of the air blocking portion (41) is greater than the width of the air guide hole (21).

3. The speed-adjustable main nozzle for an air jet loom according to claim 1, characterized in that: The drainage portion (42) is designed as an outer arc surface, the inner wall of the sleeve (2) is designed as an inner arc surface, and the drainage portion (42) and the interior of the sleeve (2) form an airway (5).

4. The speed-adjustable main nozzle for an air jet loom according to claim 3, characterized in that: The air passage (5) comprises an air inlet (51) and an air jet (52); the air inlet (51) is connected to the air guide hole (21) of the sleeve (2); the air jet (52) is located at the narrowest passage between the sealing portion (43) and the sleeve (2); the air jet (52) and the wire feeding passage (11) intersect at the wire feeding tube (3).

5. The speed-adjustable main nozzle for an air jet loom according to claim 4, characterized in that: The interior of the air passage (5) is an annular symmetrical structure, comprising an airflow inlet area (53) connected to the air inlet (51), an airflow guide area (54), an airflow throat (55) and an airflow confluence area (56), wherein the airflow confluence area (56) is connected to the air jet port (52).

6. The speed-adjustable main nozzle for an air jet loom according to claim 5, characterized in that: The air flow throat (55) is the location of the narrowest channel at the air jet port (52).

7. The speed-adjustable main nozzle for an air jet loom according to claim 1, characterized in that: The sealing portion (43) comprises a sealing sleeve (431), and the sealing sleeve (431) is made of rubber.

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