A vortex spinning machine air inlet noise reduction device

Abstract

The utility model relates to vortex spinning machine field discloses a vortex spinning machine air intake noise reduction device, including the air intake cover for vortex spinning machine air intake noise reduction, the air intake cover's air outlet end is fixedly installed with the buffer pipe, the inboard of buffer pipe is equipped with stabilizing mechanism, the other end of buffer pipe is fixedly installed with the noise reduction cylinder, the inboard of noise reduction cylinder is equipped with the noise reduction mechanism, the outside of noise reduction cylinder is fixedly equipped with the sound insulation shell. The utility model has the advantages and effects that: can intercept the impurity dust in the airflow while air intake, prevent its into the equipment, pollute the yarn while producing the noise, guarantee the clean of equipment internal environment, and can make the airflow more uniform and stable, reduce the pulse and fluctuation of airflow, reduce the generation of noise, increase the practicability of equipment, utilize the noise reduction mechanism better match the propagation characteristic of sound wave, improve the sound absorption effect.

Description

Technical Field

[0001] This utility model relates to the field of vortex spinning machine technology, and in particular to a noise reduction device for air intake of vortex spinning machines. Background Technology

[0002] Vortex spinning is a new type of spinning method developed from air-jet spinning. It uses a stationary vortex spinning tube to replace the high-speed rotating spinning cup. It has the characteristics of less hairiness, higher density, better feel, better washability, better moisture retention and bulkiness. However, in the operation of traditional vortex spinning machines, the air inlet noise is loud, and large dust and impurities can easily enter the air inlet tube, affecting the quality of vortex spinning.

[0003] In related technologies, a utility model with patent number CN217231050U has been disclosed, which proposes a vortex spinning machine air intake noise reduction device, including an air collecting hood, one end of which is provided with an air collecting port and the other end of which is provided with an air outlet; a dust removal and noise reduction cylinder, which is set inside the air collecting hood, with sound-absorbing cotton provided between the outer wall of the dust removal and noise reduction cylinder and the inner wall of the air collecting hood, and baffle dust removal and noise reduction plates are provided at intervals at the end of the dust removal and noise reduction cylinder near the air collecting port; and a vortex generating air outlet pipe, which is rotatably connected to the air outlet, with a wind direction control air inlet provided on the side of the end of the vortex generating air outlet pipe that extends into the dust removal and noise reduction cylinder. This invention incorporates a dust-removing and noise-reducing cylinder within the air collection hood, effectively removing dust and reducing noise from the incoming air. The vortex-generating exhaust duct features a wind direction control inlet for easier airflow, effectively solving the problem of high intake noise in vortex spinning machines. It also improves the quality of the incoming air by removing dust. However, shortcomings remain. During equipment intake, wind speeds vary depending on the environment. At higher wind speeds, according to fluid mechanics principles, the airflow within the duct becomes complex, boundary layer separation is prone to occur, leading to poor airflow uniformity and stability, and making pulsations and fluctuations more likely. This unstable airflow interacts with the duct walls and internal structure, resulting in noise generation.

[0004] Therefore, we propose a vortex spinning machine air intake noise reduction device to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a noise reduction device for the air intake of a vortex spinning machine, which has the effect of low noise and low dust entry.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a noise reduction device for air intake of a vortex spinning machine, comprising an air intake hood for noise reduction of air intake of a vortex spinning machine, a buffer tube fixedly installed on the air outlet end of the air intake hood, and a stabilizing mechanism provided on the inner side of the buffer tube; a noise reduction cylinder fixedly installed on the other end of the buffer tube, and a noise reduction mechanism provided on the inner side of the noise reduction cylinder.

[0007] A further feature of this invention is that a threaded groove is provided on the air inlet end of the air inlet shroud, a barrier mesh is provided on one side of the air inlet shroud, and an external threaded groove is provided on the outer side of the barrier mesh, wherein the external threaded groove is threadedly connected to the threaded groove.

[0008] By adopting the above technical solution, it is easy to disassemble or install the barrier net.

[0009] A further feature of this invention is that a soundproof outer shell is fixedly fitted onto the outer side of the noise reduction cylinder.

[0010] By adopting the above technical solution, the sound insulation effect of the equipment has been improved.

[0011] A further feature of this invention is that a sound-absorbing chamber is provided inside the soundproof shell, and the sound-absorbing chamber is filled with asbestos material.

[0012] By adopting the above technical solution, the weak noise in the noise reduction cylinder can be absorbed and weakened, thereby further increasing the sound insulation and noise reduction effect of the equipment.

[0013] A further feature of this invention is that the stabilizing mechanism includes a honeycomb current stabilizer and a buffer cavity, wherein the honeycomb current stabilizer is fixedly installed on the inner side of the buffer tube, and a buffer cavity is formed inside the buffer tube.

[0014] By adopting the above technical solutions, the airflow can be made more uniform and stable, reducing airflow pulsation and fluctuation, and reducing noise generation.

[0015] A further feature of this invention is that a vortex-generating air outlet pipe is fixedly inserted through the other end of the noise-reducing cylinder.

[0016] By adopting the above technical solution, it is easy for the airflow to form a vortex and enter the vortex spinning machine.

[0017] A further feature of this invention is that a sealing ring is fixedly fitted on the outer side of the vortex generating air outlet pipe, and one side of the sealing ring is fixedly connected to one end of the noise reduction cylinder.

[0018] By adopting the above technical solutions, it is easy to increase the sealing performance of the equipment.

[0019] A further feature of this invention is that an air inlet is fixedly installed on the outer side of one end of the vortex generating air outlet duct that extends into the noise reduction cylinder.

[0020] By adopting the above technical solution, it is easy for airflow to enter the vortex generation outlet duct through the air inlet.

[0021] A further feature of this invention is that the noise reduction mechanism includes multiple labyrinth baffles and a sound-absorbing component, multiple labyrinth baffles are fixedly installed on the inner side of the noise reduction cylinder, and a sound-absorbing component is provided on the inner side of the noise reduction cylinder.

[0022] By adopting the above technical solution, multiple labyrinth baffles divide the internal channel of the noise reduction cylinder into a labyrinth-shaped air duct, which helps to further reduce the airflow velocity.

[0023] A further feature of this invention is that the sound-absorbing component includes a first sound-absorbing foam board, a second sound-absorbing foam board, and a third sound-absorbing foam board, wherein the thickness of the first sound-absorbing foam board, the second sound-absorbing foam board, and the third sound-absorbing foam board decreases while their density increases.

[0024] By adopting the above technical solution, the propagation characteristics of sound waves can be better matched, so that the sound-absorbing foam board has a high sound absorption coefficient in a wide frequency range, thereby improving the overall sound absorption effect.

[0025] This application includes at least one of the following beneficial technical effects:

[0026] 1. This application utilizes an air intake mechanism consisting of a barrier net and an air intake hood to intercept impurities and dust in the airflow while it is being introduced, preventing them from entering the equipment, contaminating the yarn, and generating noise, thus ensuring a clean internal environment for the equipment.

[0027] 2. By utilizing a stabilizing mechanism consisting of a buffer chamber and a flow stabilizer, this application can make the airflow more uniform and stable, reduce airflow pulsation and fluctuation, reduce noise generation, and increase the practicality of the equipment.

[0028] 3. This application utilizes a noise reduction mechanism consisting of a labyrinth baffle and multiple sound-absorbing foam boards. By reducing the airflow velocity through the labyrinth baffle and improving the sound absorption effect by progressively increasing the density of the multiple sound-absorbing foam boards, the propagation characteristics of sound waves are better matched. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a three-dimensional structural diagram of a vortex spinning machine air intake noise reduction device proposed in this utility model;

[0031] Figure 2 This is a three-dimensional cross-sectional view of a vortex spinning machine air intake noise reduction device proposed in this utility model;

[0032] Figure 3 This is a three-dimensional cross-sectional view of the air inlet mechanism of a vortex spinning machine air inlet noise reduction device proposed in this utility model.

[0033] Figure 4 This is a three-dimensional structural disassembly diagram of the noise reduction mechanism of the vortex spinning machine air intake noise reduction device proposed in this utility model.

[0034] Figure 5 This is a schematic diagram showing the disassembled multiple sound-absorbing foam boards of a vortex spinning machine air intake noise reduction device proposed in this utility model.

[0035] In the diagram, 1. Air inlet hood; 2. Barrier mesh; 3. External threaded groove; 4. Soundproof shell; 5. Asbestos material; 6. Honeycomb flow stabilizer; 7. Buffer tube; 8. Buffer cavity; 9. Noise reduction cylinder; 10. Vortex generating air outlet duct; 11. Sealing ring; 12. Air inlet head; 13. Labyrinth baffle; 14. First sound-absorbing foam board; 15. Second sound-absorbing foam board; 16. Third sound-absorbing foam board; 17. Threaded groove. Detailed Implementation

[0036] Reference Figure 1-5 A noise reduction device for the air intake of a vortex spinning machine includes an air intake hood 1 for noise reduction of the air intake of the vortex spinning machine. A buffer pipe 7 is fixedly installed on the air outlet end of the air intake hood 1, and a stabilizing mechanism is provided on the inner side of the buffer pipe 7. A noise reduction cylinder 9 is fixedly installed on the other end of the buffer pipe 7, and a noise reduction mechanism is provided on the inner side of the noise reduction cylinder 9.

[0037] In this embodiment, the air inlet shroud 1 has a threaded groove 17 on its air inlet end, and a barrier net 2 is provided on one side of the air inlet shroud 1. An external threaded groove 3 is provided on the outer side of the barrier net 2, and the external threaded groove 3 is threadedly connected to the threaded groove 17.

[0038] In this embodiment, a soundproof outer shell 4 is fixedly fitted on the outside of the noise reduction cylinder 9.

[0039] In this embodiment, the soundproof shell 4 has a sound-absorbing chamber inside, and the sound-absorbing chamber is filled with asbestos material 5.

[0040] In this embodiment, the stabilizing mechanism includes a honeycomb current stabilizer 6 and a buffer cavity 8. The honeycomb current stabilizer 6 is fixedly installed on the inner side of the buffer tube 7, and the buffer cavity 8 is opened inside the buffer tube 7.

[0041] In this embodiment, the other end of the noise reduction cylinder 9 is fixedly connected to the vortex generation air outlet duct 10.

[0042] In this embodiment, a sealing ring 11 is fixedly sleeved on the outer side of the vortex generating air duct 10, and one side of the sealing ring 11 is fixedly connected to one end of the noise reduction cylinder 9.

[0043] In this embodiment, an air inlet 12 is fixedly installed on the outer side of one end of the vortex generating air duct 10 that extends into the noise reduction cylinder 9.

[0044] In this embodiment, the noise reduction mechanism includes multiple labyrinth baffles 13 and sound-absorbing components. Multiple labyrinth baffles 13 are fixedly installed on the inner side of the noise reduction cylinder 9, and sound-absorbing components are provided on the inner side of the noise reduction cylinder 9.

[0045] In this embodiment, the sound-absorbing component includes a first sound-absorbing foam board 14, a second sound-absorbing foam board 15, and a third sound-absorbing foam board 16. The thickness of the first sound-absorbing foam board 14, the second sound-absorbing foam board 15, and the third sound-absorbing foam board 16 decreases while their density increases.

[0046] Working principle: During use, airflow enters the air inlet hood 1 through the barrier mesh 2. The barrier mesh 2 intercepts impurities and dust in the airflow, preventing them from entering the equipment and causing noise or contaminating the yarn. The airflow then comes into contact with the honeycomb flow stabilizer 6 through the air inlet hood 1. The honeycomb flow stabilizer 6 makes the airflow more uniform and stable, reducing airflow pulsation and fluctuations, and reducing noise generation. Subsequently, the airflow enters the buffer chamber 8, where it passes through a gradually expanding channel to control the airflow speed and avoid local high-speed or low-speed areas within the channel, reducing noise caused by uneven speed. The airflow then comes into contact with multiple labyrinth baffles 13, which divide the internal channel of the noise reduction cylinder 9 into a labyrinth-shaped air duct, further reducing the airflow velocity. Finally, the airflow comes into contact with multiple layers of sound-absorbing foam boards, including the first sound-absorbing foam board 14. The thickness of the second sound-absorbing foam board 15 and the third sound-absorbing foam board 16 decreases while their density increases, thus forming a density-gradient structure. When sound waves come into contact with this structure, the low-density part first absorbs high-frequency sound waves. As the sound waves propagate inward, the gradually increasing density part can more effectively absorb low-frequency sound waves. This structure can better match the propagation characteristics of sound waves, so that the sound-absorbing foam board has a high sound absorption coefficient in a wide frequency range, thereby improving the overall sound absorption effect. Subsequently, the airflow enters the vortex generation outlet duct 10 through the air inlet 12, and then forms a vortex that enters the vortex spinning machine. When the airflow flows in the noise reduction cylinder 9, the sound insulation shell 4 and the asbestos material 5 therein can absorb and weaken the weak noise in the noise reduction cylinder 9, thereby further increasing the sound insulation and noise reduction effect of the equipment.

[0047] The technological advancements of this invention compared to existing technologies are as follows: it can intercept impurities and dust in the airflow while the air is being introduced, preventing them from entering the equipment, contaminating the yarn, and generating noise. This ensures a clean internal environment for the equipment and makes the airflow more uniform and stable, reducing airflow pulsation and fluctuations, lowering noise levels, and increasing the practicality of the equipment. At the same time, the noise reduction mechanism better matches the propagation characteristics of sound waves, improving the sound absorption effect.

[0048] The above provides a detailed description of the vortex spinning machine air intake noise reduction device provided in this application. Specific embodiments have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A device for reducing noise of air inlet of a vortex spinning machine, characterized in that, It includes an air inlet hood (1) for noise reduction of air intake in a vortex spinning machine, wherein a buffer tube (7) is fixedly installed on the air outlet end of the air inlet hood (1), and a stabilizing mechanism is provided on the inner side of the buffer tube (7). The other end of the buffer tube (7) is fixedly installed with a noise reduction cylinder (9), and the inner side of the noise reduction cylinder (9) is provided with a noise reduction mechanism.

2. The air inlet noise reduction device of a vortex spinning machine according to claim 1, characterized in that: The air inlet hood (1) has a threaded groove (17) on its air inlet end. A barrier mesh (2) is provided on one side of the air inlet hood (1). An external threaded groove (3) is provided on the outer side of the barrier mesh (2). The external threaded groove (3) is threadedly connected to the threaded groove (17).

3. The air inlet noise reduction device of a vortex spinning machine according to claim 1, characterized in that: The noise reduction tube (9) is fixedly fitted with a sound insulation shell (4) on its outer side.

4. The air inlet noise reduction device of a vortex spinning machine according to claim 3, characterized in that: The soundproof shell (4) has a sound-absorbing chamber inside, and the sound-absorbing chamber is filled with asbestos material (5).

5. The air inlet noise reduction device of a vortex spinning machine according to claim 1, characterized in that: The stabilizing mechanism includes a honeycomb current stabilizer (6) and a buffer cavity (8). The honeycomb current stabilizer (6) is fixedly installed on the inner side of the buffer tube (7), and the buffer cavity (8) is opened inside the buffer tube (7).

6. The air inlet noise reduction device of a vortex spinning machine according to claim 1, characterized in that: The other end of the noise reduction cylinder (9) is fixedly connected to a vortex generation air outlet pipe (10).

7. The air inlet noise reduction device of a vortex spinning machine according to claim 6, characterized in that: A sealing ring (11) is fixedly sleeved on the outside of the vortex generating air duct (10), and one side of the sealing ring (11) is fixedly connected to one end of the noise reduction cylinder (9).

8. The air inlet noise reduction device of a vortex spinning machine according to claim 7, characterized in that: An air inlet (12) is fixedly installed on the outer side of one end of the vortex generating air duct (10) that extends into the noise reduction cylinder (9).

9. The air inlet noise reduction device of a vortex spinning machine according to claim 1, characterized in that: The noise reduction mechanism includes multiple labyrinth baffles (13) and sound-absorbing components. Multiple labyrinth baffles (13) are fixedly installed on the inner side of the noise reduction cylinder (9), and sound-absorbing components are provided on the inner side of the noise reduction cylinder (9).

10. The air inlet noise reduction device of a vortex spinning machine according to claim 9, characterized in that: The sound-absorbing component includes a first sound-absorbing foam board (14), a second sound-absorbing foam board (15), and a third sound-absorbing foam board (16), wherein the thickness of the first sound-absorbing foam board (14), the second sound-absorbing foam board (15), and the third sound-absorbing foam board (16) decreases while the density increases.

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