Eccentric vortex spinning device

Abstract

The utility model discloses an eccentric vortex spinning device, which relates to the technical field of vortex spinning and comprises a spinning box, a spindle head component and a vortex nozzle. A through mounting channel is arranged in the spinning box; a first annular cavity communicated with the mounting channel is formed in the spinning box; the spinning box is provided with a negative pressure impurity discharging air outlet communicated with the first annular cavity. The spindle head assembly is fixedly arranged in the mounting channel and is provided with a central twisting channel; the vortex nozzle is fixedly arranged below the spindle head assembly; the vortex nozzle has an air injection channel; the outer side of the lower end of the spindle head assembly is provided with a lodging twisting conical face. Rotating airflow blowing to the lodging and twisting conical surface can be provided in the air injection channel; the axis of the center twisting channel coincides with the axis of the lodging twisting conical face, and the distance between the axis of the lodging twisting conical face and the negative pressure impurity removal air outlet is smaller than the distance between the axis of the air injection channel and the negative pressure impurity removal air outlet. The problem of unbalanced rotary spinning airflow speed is solved, and the effect of a finished yarn product is optimized.

Description

Technical Field

[0001] The utility model relates to the technical field of vortex spinning, in particular to an eccentric vortex spinning device. Background Technique

[0002] Vortex spinning is a new type of spinning technology. The spinning method of vortex spinning is a process of fiber transfer, condensation, twisting and yarn formation, all of which are completed by a high-speed rotating and advancing air flow, belonging to a free-end spinning. High-pressure gas rotates at a high speed in the vortex spinning box, forming a series of positive and negative pressure combinations to push the fibers to rotate to form true twist. At the same time, other auxiliary mechanisms are used to form and cooperate with the air flow to form joints, convey and wind the yarn. Vortex spinning has obvious characteristics: short process flow, high spinning speed, short process flow, high production rate, less power consumption, etc.

[0003] During the spinning process of vortex spinning, it is necessary to remove short fibers, dust and impurities, etc. Therefore, a negative pressure dust removal channel is usually set in the spinning box of vortex spinning. Due to the existence of this negative pressure channel, when the high-pressure air flow passes through the rotating spinning air flow formed by the vortex tube, it will affect the air flow velocity distribution at the spinning head, forming a relatively obvious weak area of air flow velocity, resulting in a low fiber wrapping speed passing through this low-speed area and an insufficiently tight wrapping force, thus affecting the performance parameters such as the evenness, hairiness and strength of the spun yarn. Therefore, based on the above existing defect problems, it is necessary to redesign a vortex spinning device to improve or solve this problem. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an eccentric vortex spinning device to solve the problems existing in the above-mentioned prior art, reduce the problem of uneven air flow velocity of the rotating spinning air flow, and optimize the finished yarn effect.

[0005] To achieve the above purpose, the utility model provides the following scheme:

[0006] The utility model provides an eccentric vortex spinning device, comprising a spinning box, a spindle head assembly and a vortex nozzle; a mounting channel penetrating from top to bottom is arranged in the spinning box; and a first annular cavity connected to the mounting channel is arranged in the spinning box; a negative pressure impurity exhaust outlet connected to the first annular cavity is arranged on the spinning box; the spindle head assembly is fixedly arranged in the mounting channel, and the spindle head assembly has a central twisting channel penetrating in a vertical direction; the vortex nozzle is fixedly arranged in the mounting channel below the spindle head assembly; the vortex nozzle has an air jet channel; the The outer side of the lower end of the spindle head assembly is provided with an inverted twisting conical surface; in the vertical direction, the large mouth end of the inverted twisting conical surface is located in the first annular cavity, and the small mouth end of the inverted twisting conical surface is located in the jet channel of the vortex nozzle; the jet channel can provide a rotating airflow blowing onto the inverted twisting conical surface; the axis of the central twisting channel coincides with the axis of the inverted twisting conical surface, and the distance between the axis of the inverted twisting conical surface and the negative pressure exhaust outlet is smaller than the distance between the axis of the jet channel and the negative pressure exhaust outlet.

[0007] Preferably, a cooling cavity is provided in the spindle head assembly located in the circumference of the central twisting channel, and a cooling device is provided in the cooling cavity. The cooling device provides low temperature for heat exchange at one end of the cooling cavity close to the inverted twisting conical surface.

[0008] Preferably, the cooling device is a heat pipe, an evaporation end is formed at one end of the heat pipe close to the inverted twisted conical surface, and a condensation end is formed at one end of the heat pipe away from the inverted twisted conical surface; a liquid absorption core made of capillary porous material is arranged in the heat pipe; and the heat pipe is in a negative pressure state and is filled with working medium.

[0009] Preferably, the spindle head assembly includes an inlay and an outer shell; the outer shell has a resting cavity and an upper opening and a lower opening connected to the resting cavity, and a receiving surface is provided in the lower opening; the central twisting channel is provided in the inlay; the inlay is located in the resting cavity, and the lower end of the inlay is located on the receiving surface, and the upper end of the inlay can close the upper opening; the cooling cavity is formed between the outer wall of the inlay and the inner wall of the resting cavity.

[0010] Preferably, a diffuser cavity is provided in the embedded body, and a diffuser is provided in the diffuser cavity; the diffuser has a first central channel coaxial with the central twisting channel; and a plurality of through holes connected to the first central channel are provided on the side wall of the diffuser; each of the through holes is connected to the diffuser cavity; a plurality of connecting channels are provided at the upper end of the embedded body, one end of each connecting channel is connected to the outside, and the other end of each connecting channel is connected to the diffuser cavity; a wire outlet hole is provided at the upper end of the embedded body, the wire outlet hole is located above the first central channel, and the wire outlet hole, the first central channel and the central twisting channel are coaxial and connected in sequence.

[0011] Preferably, the spinning box is provided with an air intake cavity at a position corresponding to the side wall of the vortex nozzle; an air inlet connected to the air intake cavity is provided on the side wall of the spinning box; at least one spiral air intake channel is provided on the side wall of the vortex nozzle, and each of the spiral air intake channels is connected to the air intake cavity.

[0012] Preferably, a yarn guide block is provided in the jet channel below each of the spiral air inlet channels.

[0013] Preferably, a pressure balancing air hole communicating with the first annular cavity is also provided on the side wall of the spinning box.

[0014] Preferably, an opening at one end of the outlet hole away from the first central channel is configured as an arc-shaped expansion.

[0015] Preferably, an annular limiting ridge is provided on the side wall of the storage cavity close to the upper opening, and the upper end of the embedded body is located on the annular limiting ridge.

[0016] Compared with the prior art, the utility model has achieved the following technical effects:

[0017] The eccentric vortex spinning device provided by the utility model eccentrically sets the axis of the inverted twisting conical surface to the side close to the negative pressure impurity exhaust outlet, thereby making the air flow channel space on the side of the inverted twisting conical surface close to the negative pressure impurity exhaust outlet relatively smaller. According to the principles of fluid mechanics, under the same flow rate, the smaller channel space will lead to an increase in gas flow rate, thereby optimizing the originally formed weak air flow velocity area, reducing the problem of uneven air flow velocity of the rotating spinning airflow on the inverted twisting conical surface, and optimizing the final product effect of the yarn.

[0018] Furthermore, since the inverted twisting conical surface of the spindle head assembly is always in a state of being impacted by high-speed airflow, local high temperature is easily formed at its tip, which will cause the plant fiber wax to pyrolyze and adhere to the spindle head. In addition, chemical fibers are easily hardened by heat. During long-term spinning, their ends are easily damaged, affecting their lifespan, and also affecting the quality of the spinning yarn, such as evenness, hairiness, and strength. The cooling cavity and the cooling device arranged inside can achieve good heat dissipation effect on the inverted twisting conical surface, reduce the occurrence of the above problems caused by high temperature, improve yarn quality, and extend the service life of related structures of the device.

[0019] Furthermore, a heat pipe is used as a cooling device. The working medium inside the heat pipe can quickly conduct heat, improve heat dissipation efficiency, help maintain the working temperature at its tip, and ensure the stability and continuity of the spinning and twisting process; and the structural volume of the heat pipe heat dissipation is relatively small, which is suitable for the compact space inside it and will not increase the volume and weight of the equipment too much; since there are no moving mechanical parts inside the heat pipe, no noise will be generated, the structure is simple, the reliability is strong, it can operate stably for a long time, and the equipment maintenance cost is reduced; the heat pipe has a strong ability to transfer heat and can respond to changes in its tip temperature more quickly, thereby better controlling its tip temperature.

[0020] Furthermore, the spindle head assembly consists of two parts: an inner body and an outer shell. The combined structure makes the overall structure more solid and can reduce the risk of deformation and damage; and the space between the two forms a cooling cavity, which is simple and convenient to form; when one of the components is damaged, it can be replaced separately without replacing the entire assembly, thereby reducing maintenance costs.

[0021] Furthermore, the diffuser can evenly disperse the airflow, ensuring that the airflow entering the central twisting channel is uniform and stable, creating consistent conditions for the movement and arrangement of the fibers; it can help loosen the fiber bundles, making them looser, which is convenient for subsequent twisting and molding.

[0022] Furthermore, by cooperating between the air intake cavity and a plurality of spiral air intake channels, the compressed gas entering through the air intake port can first enter the air intake cavity and be guided by the spirals of the spiral air intake channels to form a rotating airflow at the upper end of the jet channel.

[0023] Furthermore, the yarn guide block is arranged in the jet channel, which can reduce its air intake space, thereby promoting the formation of a negative pressure area under the rotating airflow; and it can play a guiding role, guiding it to enter the central twisting channel through the rotating airflow.

[0024] Furthermore, the provision of the pressure balancing pores can achieve a stable balance of pressure in the first annular cavity, thereby ensuring stable lodging and twisting of the fiber bundle.

[0025] Furthermore, the setting of the arc-shaped expansion can reduce the contact friction between the yarn coming out of the outlet hole and the periphery of the opening, thus affecting the finished product effect of the yarn.

[0026] Furthermore, the annular limiting ridge can limit the installation position of the inlay, thereby ensuring the accuracy of its installation position. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 This is a schematic diagram of the overall structure of the eccentric vortex spinning device provided by the utility model;

[0029] Figure 2 A schematic cross-sectional structure diagram of an eccentric vortex spinning device provided by the utility model;

[0030] Figure 3 A schematic diagram of the internal structure of the eccentric vortex spinning device provided by the utility model after some parts are cut away;

[0031] Figure 4 Another schematic diagram of the internal structure of the eccentric vortex spinning device provided by the utility model after cutting.

[0032] In the figure:

[0033] 100-eccentric vortex spinning device;

[0034] 10-spinning box; 11-first annular cavity; 12-negative pressure exhaust outlet; 13-air inlet cavity; 14-air inlet; 15-pressure balance pore;

[0035] 20-spindle head assembly; 21-inlay; 211-central twisting channel; 212-scattering cavity; 213-communication channel; 214-wire outlet hole; 215-arc-shaped expansion; 22-outer shell; 221-inverted twisting conical surface; 222-supporting surface; 223-annular limiting convex ridge; 23-cooling cavity;

[0036] 30- diffuser; 31- first central channel; 32- through hole;

[0037] 40 - vortex nozzle; 41 - jet channel; 42 - spiral air inlet channel; 43 - yarn guide block. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] The utility model aims to provide an eccentric vortex spinning device to solve the problems existing in the prior art, reduce the problem of uneven air flow speed in rotary spinning, and optimize the effect of finished yarn products.

[0040] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0041] Embodiment 1

[0042] This embodiment provides an eccentric vortex spinning device 100, such as Figures 1 to 4 As shown, it includes a spinning box 10, a spindle head assembly 20 and a vortex nozzle 40; a mounting channel running through the top and bottom is provided in the spinning box 10; and a first annular cavity 11 connected to the mounting channel is provided in the spinning box 10; a negative pressure impurity exhaust outlet 12 connected to the first annular cavity 11 is provided on the spinning box 10; the spindle head assembly 20 is fixedly arranged in the mounting channel, and the spindle head assembly 20 has a central twisting channel 211 running through in the vertical direction; the vortex nozzle 40 is fixedly arranged in the mounting channel below the spindle head assembly 20; the vortex nozzle 40 has an air jet channel 41; the lower part of the spindle head assembly 20 The outer side of the end is provided with an inverted twisting conical surface 221; in the vertical direction, the large mouth end of the inverted twisting conical surface 221 is located in the first annular cavity 11, and the small mouth end of the inverted twisting conical surface 221 is located in the jet channel 41 of the vortex nozzle 40; the jet channel 41 can provide a rotating airflow blowing onto the inverted twisting conical surface 221; the axis of the central twisting channel 211 coincides with the axis of the inverted twisting conical surface 221, and the distance between the axis of the inverted twisting conical surface 221 and the negative pressure exhaust outlet 12 is smaller than the distance between the axis of the jet channel 41 and the negative pressure exhaust outlet 12.

[0043] By eccentrically setting the axis of the inverted twisting conical surface 221 toward the side close to the negative pressure exhaust outlet 12, the air flow channel space on the side of the inverted twisting conical surface 221 close to the negative pressure exhaust outlet 12 becomes relatively smaller. According to the principles of fluid mechanics, under the same flow rate, the smaller channel space will lead to an increase in gas flow rate, thereby optimizing the originally formed weak air flow velocity area, reducing the problem of uneven air flow velocity of the rotating spinning airflow on the inverted twisting conical surface 221, and optimizing the final product effect of the yarn.

[0044] In order to achieve the cooling effect in the spindle head assembly 20, the following settings may also be made:

[0045] Among the optional solutions of this embodiment, it is more preferred that Figure 2 and Figure 3 As shown, a cooling cavity 23 is provided in the spindle head assembly 20 located in the circumference of the central twisting channel 211, and a cooling device is provided in the cooling cavity 23. The cooling device provides low temperature for heat exchange at one end of the cooling cavity 23 close to the inverted twisting conical surface 221. Since the inverted twisting conical surface 221 of the spindle head assembly 20 is always in a state of being impacted by high-speed airflow, local high temperature is easily formed at its tip, which will cause the plant fiber wax to pyrolyze and adhere to the spindle head. In addition, chemical fibers are easily hardened by heat. During long-term spinning, their ends are easily damaged, affecting their lifespan, and also affecting the quality of the spinning yarn, such as evenness, hairiness, and strength. The cooling cavity 23 and the cooling device provided inside can achieve a good heat dissipation effect on the inverted twisting conical surface 221, reduce the occurrence of the above problems caused by high temperature, improve the yarn quality, and extend the service life of the relevant structures of the device.

[0046] Among the optional schemes of this embodiment, it is more preferred that the cooling device is a heat pipe, and the end of the heat pipe close to the inverted twisting conical surface 221 forms an evaporation end, and the end of the heat pipe away from the inverted twisting conical surface 221 forms a condensation end; a liquid wick made of capillary porous material is arranged in the heat pipe; and the heat pipe is in a negative pressure state and filled with a working medium. When a heat pipe is used as a cooling device, the working medium inside the heat pipe can quickly conduct heat, improve the heat dissipation efficiency, help maintain the working temperature at its tip, and ensure the stability and continuity of the spinning twisting process; and the heat pipe heat dissipation structure volume is relatively small, suitable for the compact space inside it, and will not increase the volume and weight of the equipment too much; since there are no moving mechanical parts inside the heat pipe, no noise will be generated, the structure is simple, the reliability is strong, and it can operate stably for a long time, reducing the equipment maintenance cost; the heat pipe has a strong ability to transfer heat, and can respond to the temperature change of its tip more quickly, so as to better control its tip temperature.

[0047] Among them, the relevant structure description of the spindle head assembly 20 is as follows:

[0048] Among the optional solutions of this embodiment, it is more preferred that Figures 1 to 3As shown, the spindle head assembly 20 includes an inner insert 21 and an outer housing 22; the outer housing 22 has a resting cavity, an upper opening and a lower opening communicating with the resting cavity, and a receiving surface 222 is provided in the lower opening; a central twisting channel 211 is provided in the inner insert 21; the inner insert 21 is located in the resting cavity, and the lower end of the inner insert 21 is located on the receiving surface 222, and the upper end of the inner insert 21 can close the upper opening; a cooling cavity 23 is formed between the outer side wall of the inner insert 21 and the inner side wall of the resting cavity. The spindle head assembly 20 is composed of two parts, the inner insert 21 and the outer housing 22. Its combined structure makes the overall structure more solid, and can reduce the risk of deformation and damage; and the space between the two forms a cooling cavity 23, which is simple and convenient to form; when a certain component is damaged, it can be replaced separately without replacing the entire assembly, reducing the maintenance cost.

[0049] In an alternative embodiment of the present embodiment, preferably, as Figure 2 and Figure 3 shown, a diffusing cavity 212 is provided in the inner insert 21, and a diffuser 30 is provided in the diffusing cavity 212; the diffuser 30 has a first central channel 31 coaxial with the central twisting channel 211; and a plurality of through holes 32 communicating with the first central channel 31 are provided on the side wall of the diffuser 30; each through hole 32 communicates with the diffusing cavity 212; a plurality of communication channels 213 are provided at the upper end of the inner insert 21, one end of each communication channel 213 communicates with the outside, and the other end of each communication channel 213 communicates with the diffusing cavity 212; an outlet hole 214 is provided at the upper end of the inner insert 21, the outlet hole 214 is located above the first central channel 31, and the outlet hole 214, the first central channel 31 and the central twisting channel 211 are coaxial and communicate in sequence. The diffuser 30 can evenly disperse the airflow, ensure that the airflow entering the central twisting channel 211 is uniform and stable, and create consistent conditions for the movement and arrangement of the fibers; it can help to loosen the fiber bundle, make it looser, and facilitate subsequent twisting and forming.

[0050] Specifically, the diffuser 30 is a conventional structure, and its structural functions are the same as those on the Rieter vortex spinning machine in Switzerland, so no further description will be given here.

[0051] In an alternative embodiment of the present embodiment, preferably, as Figures 1 to 4 shown, the opening at the end of the outlet hole 214 away from the first central channel 31 is provided with an arc-shaped flared opening 215. The setting of the arc-shaped flared opening 215 can reduce the contact friction between the yarn coming out of the outlet hole 214 and the periphery of the opening, affecting the finished product effect of the yarn.

[0052] In an alternative embodiment of the present embodiment, preferably, as Figures 2 to 4As shown, an annular limiting rib 223 is provided on the side wall of the placing cavity near the upper opening, and the upper end of the embedded body 21 is located on the annular limiting rib 223. The annular limiting rib 223 can limit the installation position of the embedded body 21 and ensure the accuracy of its installation position.

[0053] Among them, the relevant structural description of the spinning box 10:

[0054] In an alternative embodiment of the present embodiment, preferably, as Figures 2 to 3 shown, a pressure balance air hole 15 communicating with the first annular cavity 11 is further provided on the side wall of the spinning box 10. The setting of the pressure balance air hole 15 can enable the pressure in the first annular cavity 11 to achieve stable balance and ensure the stable laying and twisting of its fiber bundle.

[0055] Among them, the relevant structural description of the eddy current nozzle 40:

[0056] In an alternative embodiment of the present embodiment, preferably, as Figures 2 to 4 shown, an air inlet cavity 13 is provided at the position of the side wall of the spinning box 10 corresponding to the side wall of the eddy current nozzle 40; an air inlet 14 communicating with the air inlet cavity 13 is provided on the side wall of the spinning box 10; at least one spiral air inlet channel 42 is provided on the side wall of the eddy current nozzle 40, and each spiral air inlet channel 42 communicates with the air inlet cavity 13. Through the cooperation of the air inlet cavity 13 and the multiple spiral air inlet channels 42, the compressed gas entering through the air inlet 14 can first enter the air inlet cavity 13 and, through the spiral guidance of each spiral air inlet channel 42, form a swirling air flow at the upper end of the jet channel 41.

[0057] In an alternative embodiment of the present embodiment, preferably, as Figure 2 shown, a yarn guiding block 43 is provided in the jet channel 41 below each spiral air inlet channel 42. The yarn guiding block 43 is provided in the jet channel 41, which can reduce its air inlet space, thereby promoting the formation of a negative pressure area below the swirling air flow; and it can play a guiding role to guide the yarn to enter the central twisting channel 211 through the swirling air flow.

[0058] In the present utility model, specific examples are used to elaborate the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present utility model.

Claims

1. An eccentric vortex spinning device, characterized in that: It includes a spinning box, a spindle head assembly and a vortex nozzle; The spinning box is provided with an installation passage running through from top to bottom; and the spinning box is provided with a first annular cavity communicating with the installation passage; and the spinning box is provided with a negative pressure impurity exhaust outlet communicating with the first annular cavity; The spindle head assembly is fixedly arranged in the installation channel, and the spindle head assembly has a central twisting channel penetrating in the vertical direction; the vortex nozzle is fixedly arranged in the installation channel below the spindle head assembly; the vortex nozzle has an air jet channel; The outer side of the lower end of the spindle head assembly has a lodging twisting conical surface; in the vertical direction, the large end of the lodging twisting conical surface is located in the first annular cavity, and the small end of the lodging twisting conical surface is located in the jet passage of the vortex nozzle; The jet channel can provide a rotating airflow blowing onto the inverted twisting conical surface; The axis of the central twisting channel coincides with the axis of the prostrating twisting conical surface, and the distance between the axis of the prostrating twisting conical surface and the negative pressure exhaust outlet is smaller than the distance between the axis of the jet channel and the negative pressure exhaust outlet.

2. The eccentric vortex spinning device according to claim 1, characterized in that: A cooling cavity is arranged in the spindle head assembly located in the circumference of the central twisting channel, and a cooling device is arranged in the cooling cavity. The cooling device provides low temperature for heat exchange at one end of the cooling cavity close to the inverted twisting conical surface.

3. The eccentric vortex spinning device according to claim 2, characterized in that: The cooling device is a heat pipe, wherein one end of the heat pipe close to the inverted twisted conical surface forms an evaporation end, and one end of the heat pipe away from the inverted twisted conical surface forms a condensation end; The heat pipe is provided with a liquid wick made of a capillary porous material; and the heat pipe is in a negative pressure state and is filled with a working medium.

4. The eccentric vortex spinning device according to claim 2, characterized in that: The spindle head assembly comprises an inlay and an outer shell; The outer shell has a storage cavity and an upper opening and a lower opening connected to the storage cavity, and a receiving surface is arranged in the lower opening; The central twisting channel is arranged in the embedded body; The inlay is located in the storage cavity, and the lower end of the inlay is located on the receiving surface, and the upper end of the inlay can close the upper opening; the cooling cavity is formed between the outer wall of the inlay and the inner wall of the storage cavity.

5. The eccentric vortex spinning device according to claim 4, characterized in that: A diffuser cavity is arranged in the embedded body, and a diffuser is arranged in the diffuser cavity; The diffuser has a first central channel coaxial with the central twisting channel; and a plurality of through holes communicating with the first central channel are arranged on the side wall of the diffuser; each of the through holes is communicated with the diffuser cavity; A plurality of communication channels are provided at the upper end of the embedded body, one end of each of the communication channels is connected to the outside, and the other end of each of the communication channels is connected to the diffuser cavity; A wire outlet hole is provided at the upper end of the embedded body, and the wire outlet hole is located above the first central channel. The wire outlet hole, the first central channel and the central twisting channel are all coaxial and connected in sequence.

6. The eccentric vortex spinning device according to claim 1, characterized in that: The spinning box is provided with an air intake cavity at a position corresponding to the side wall of the vortex nozzle; An air inlet communicating with the air inlet cavity is arranged on the side wall of the spinning box; At least one spiral air inlet channel is arranged on the side wall of the vortex nozzle, and each of the spiral air inlet channels is communicated with the air inlet cavity.

7. The eccentric vortex spinning device according to claim 6, characterized in that: A yarn guide block is arranged in the jet channel below each of the spiral air inlet channels.

8. The eccentric vortex spinning device according to claim 1, characterized in that: The side wall of the spinning box is also provided with a pressure balancing air hole connected with the first annular cavity.

9. The eccentric vortex spinning device according to claim 5, characterized in that: The opening of one end of the outlet hole away from the first central channel is arranged to be an arc-shaped expansion.

10. The eccentric vortex spinning device according to claim 4, characterized in that: An annular limiting ridge is arranged on the side wall of the storage cavity close to the upper opening, and the upper end of the embedded body is located on the annular limiting ridge.

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