Airflow focusing type centrifugal spinning device

Abstract

A kind of airflow focusing centrifugal spinning device, including liquid reservoir, several wind needles and first driving device, the annular liquid reservoir tray of liquid reservoir is annular hollow structure, is provided with several liquid outlet holes on its outer ring surface, the support shaft of liquid reservoir is connected through several support columns annular liquid reservoir tray, two two adjacent support columns form air duct, wind needle is located at one side of liquid reservoir, and its air outlet extends towards air duct, first driving device rotates and drives liquid reservoir to carry out centrifugal motion;The design is in application, fiber is sent out by centrifugal operation and wind needle blowing airflow, and is solidified in the air and is interwoven into net, while improving the efficiency of production, the degree of fiber stretching and interweaving gap can be controlled by adjusting airflow and rotation speed, the form of product is enriched, with good adjustability.Therefore, the design not only has higher spinning efficiency, but also has better controllability.

Description

TECHNICAL FIELD

[0001] The present application relates to a spinning device, belonging to the technical field of spinning, in particular to a gas flow focusing type centrifugal spinning device. BACKGROUND

[0002] Centrifugal spinning refers to a method in which some polymer melt is spun into fibers by the centrifugal force and shear force generated by a high-speed rotating device through a fine hole, and the obtained fibers have different lengths and diameters, which can be directly laid into a mat, and is mainly used for spinning glass fibers, phenolic and general grade asphalt carbon fibers, and the process conditions vary with the used polymers, and various angle air nozzles can be arranged outside the spinning hole to pull and solidify the spun fibers.

[0003] The patent application with application number 202122155990.4 and application date September 7, 2021 discloses a needle-free solution air spinning device, which comprises a gas supply unit, a continuous liquid supply unit and a collection unit. The gas supply unit comprises a compressed gas supply device and a gas jet device, and the compressed gas supply device and the gas jet device are connected through a pipeline, and a pressure reducing valve is arranged on the pipeline. The continuous liquid supply unit comprises a solution tank, a spinning liquid conveying device and a power roller, a support shaft is arranged in the solution tank, and the solution tank contains spinning liquid, the support shaft is below the liquid level of the spinning liquid, the power roller is arranged above the solution tank, the power roller and the support shaft are drivingly connected through the spinning liquid conveying device, and the gas jet device is arranged between the power roller and the support shaft and the gas jet direction of the gas jet device faces the spinning liquid conveying device. The collection unit is arranged downstream of the gas jet device. Although the device can melt-blow spinning, the spinning efficiency is low, and in large-scale production, only the number of nozzles and the area of the spinning liquid conveying device can be increased, which greatly increases the mechanical volume and cost, and the product form is relatively single and the adjustability is poor.

[0004] The information disclosed in this BACKGROUND section is only for the purpose of increasing the understanding of the general background of the application, and should not be taken as an acknowledgment or any form of suggestion that it forms prior art merely by virtue of its appearance in this application. SUMMARY

[0005] The purpose of the present application is to overcome the defects and problems of low spinning efficiency and poor controllability in the prior art, and to provide a gas flow focusing type centrifugal spinning device with high spinning efficiency and good adjustability.

[0006] To achieve the above purpose, the technical solution of the present application is: a gas flow focusing type centrifugal spinning device, the spinning device comprises a liquid reservoir, a plurality of air needles and a first driving device.

[0007] The liquid reservoir comprises a ring-shaped liquid storage disc, a support shaft and a plurality of support columns, one side of the ring-shaped liquid storage disc is provided with a ring-shaped opening, an inner ring wall of the ring-shaped liquid storage disc is formed with a ring-shaped liquid storage cavity, and a plurality of liquid outlet holes communicating with the ring-shaped liquid storage cavity are arranged on the outer ring wall of the ring-shaped liquid storage disc.

[0008] The support shaft is located at the center of the ring-shaped liquid storage disc, a key shaft through hole is formed at the center of the support shaft, the support shaft is connected with the ring-shaped liquid storage disc through a plurality of support columns, the plurality of support columns are distributed circumferentially along the center of the support shaft, and air ducts are formed between every two adjacent support columns.

[0009] The key shaft of the first driving device penetrates the key shaft through hole and extends outward, is inserted into the liquid reservoir in a fit manner, and rotates to drive the liquid reservoir to perform centrifugal motion; the plurality of air needles are located on one side of the liquid reservoir and are distributed circumferentially along the center of the key shaft, and air outlets of the plurality of air needles extend towards the air ducts.

[0010] The first driving device is fixed to the support frame, the support frame comprises a first support plate, a second support plate and a third support plate connected in sequence, the first support plate and the second support plate are connected through a plurality of first support rods, and the second support plate and the third support plate are connected through a plurality of second support rods.

[0011] The second support plate is provided with a shaft through hole at the center thereof, the third support plate is provided with a circular protrusion on the side wall close to the liquid reservoir, the circular protrusion is provided with a through shaft hole at the center thereof, a plurality of air needle mounting holes are arranged circumferentially at the center of the through shaft hole, the body of the first driving device is located in the region between the first support plate and the second support plate and is fixed to the side wall of the second support plate, the air needles are connected in the plurality of air needle mounting holes, and the key shaft is connected with the liquid reservoir in sequence by penetrating the shaft through hole, the through shaft hole and the liquid reservoir.

[0012] The spinning device is fixed to the rack, the rack comprises a plurality of I-shaped vertical frames arranged symmetrically, a plurality of upper horizontal frames and a plurality of lower horizontal frames, the centers of the plurality of upper horizontal frames and the plurality of lower horizontal frames are parallel to each other, the two ends of the plurality of upper horizontal frames are connected with the middle parts of the plurality of vertical frames respectively, and the two ends of the plurality of lower horizontal frames are connected with the bottom parts of the plurality of vertical frames respectively.

[0013] A plurality of bolt holes are arranged on the first support plate, and bolts are arranged in the plurality of bolt holes, the first support plate is fixed to the vertical frame in the upper region of the upper horizontal frame through the bolts, and the center of the first driving device is parallel to the upper horizontal frame.

[0014] The top surface of the several lower cross frames is fixedly connected with a fixed plate, the top surface of the fixed plate is provided with an air compressor, the air compressor is located in the area between the upper cross frame and the lower cross frame, a four-way valve is arranged on the air compressor, one end of a plurality of spring flexible air pipes is connected to the four-way valve, the other end of the plurality of spring flexible air pipes extends into the area between the second support plate and the third support plate and is connected with a plurality of air needle mounting holes respectively.

[0015] The key shaft comprises a large-diameter end and a small-diameter end connected in sequence, one end of the large-diameter end is connected with the fuselage, the other end sequentially penetrates the shaft through hole and the through shaft hole and extends outward, the small-diameter end penetrates the key shaft through hole and extends outward, the side wall of the support shaft abuts on the shaft step, and the end of the small-diameter end is clamped with a clamp.

[0016] The air needle comprises a tail cylinder, a middle cylinder and a needle tube body connected in sequence, the tail cylinder and the needle tube body are both hollow cylinders, the middle cylinder is a polygonal cylinder, the tail cylinder is threadedly fixed in the air needle mounting hole, and the middle cylinder abuts on the side wall of the circular protrusion.

[0017] The diameter of the middle cylinder is greater than that of the tail cylinder, and the diameter of the tail cylinder is greater than that of the needle tube body; a tail cylinder cavity is formed in the tail cylinder, a needle tube cavity is formed in the needle tube body, the needle tube cavity extends into the middle cylinder and communicates with the tail cylinder cavity, and the tail cylinder cavity communicates with the air needle mounting hole.

[0018] The plurality of support columns are three, perpendicular to the axis of the support shaft and evenly distributed along the axis of the support shaft, and a fan-shaped air duct is formed between every two adjacent support columns.

[0019] The annular liquid storage cover is arranged on the annular liquid storage disc, the shape of the annular liquid storage cover matches the annular opening, and the annular liquid storage cover is clamped in the annular opening to seal the annular liquid storage cavity.

[0020] Compared with the prior art, the beneficial effects of the present application are:

[0021] 1. In the airflow focusing type centrifugal spinning device, comprising a liquid reservoir, a plurality of air needles and a first driving device, the annular liquid storage disc of the liquid reservoir is a hollow structure, a plurality of liquid outlet holes are arranged on the outer ring surface of the annular liquid storage disc, the support shaft of the liquid reservoir is connected to the annular liquid storage disc through a plurality of support columns, two adjacent support columns form an air duct, the air needle is located on one side of the liquid reservoir, the air outlet of the air needle extends towards the air duct, and the first driving device drives the liquid reservoir to perform centrifugal motion; in application, the fiber is sent out by centrifugal operation and airflow blown out by the air needle, and is coagulated and interwoven into a net in the air, the production efficiency is improved, the stretching degree and interweaving gap of the fiber can be controlled by adjusting the airflow and rotation speed, the form of the product is enriched, and good adjustability is achieved. Therefore, the spinning efficiency is high, and the controllability is good.

[0022] 2. In the airflow focusing type centrifugal spinning device, the support column is three, perpendicular to the axis of the support shaft, and uniformly distributed along the axis of the support shaft, and the fan-shaped air duct is formed between two adjacent support columns; in application, the three-pronged support structure provides excellent support while reducing obstruction, the fan-shaped air duct can make more airflow pass through, improve the fiber forming speed, and ensure the stability of the airflow, which is beneficial to ensure the fiber forming quality. Therefore, the spinning efficiency is high, and the quality is good.

[0023] 3. In the airflow focusing type centrifugal spinning device, the top surface of the fixed plate is provided with an air compressor, the air compressor is connected with a plurality of air needles through a four-way valve, a plurality of spring flexible air pipes; in application, the four-way valve can synchronously adjust the airflow speed of the air needle, ensure the airflow consistency of the plurality of air needles, and control the stretching degree of the fiber in the air by adjusting the air pressure of the air compressor, so as to control the stretching degree of the fiber in the air, and also can be matched with the rotation of the first driving device, so as to obtain composite fibers with different properties, and improve the richness of the product. Therefore, the adjustability of the present application is good. DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present application.

[0025] Figure 2 It is a side view of the present application.

[0026] Figure 3 It is an explosion view of the present application.

[0027] Figure 4 It is a relative position diagram of the liquid reservoir, air needle and first driving device in the present application.

[0028] Figure 5 It is Figure 4 a side view of the relative position.

[0029] Figure 6 is the structure diagram of the liquid reservoir in the present application.

[0030] Figure 7 is the top view of the liquid reservoir in the present application.

[0031] Figure 8 is the structure diagram of the wind needle in the present application.

[0032] Figure 9 is the sectional view of the wind needle in the present application.

[0033] Figure 10 is the structure diagram of the second support plate in the present application.

[0034] Figure 11 is the structure diagram of the third support plate in the present application.

[0035] Figure 12 is the structure diagram of the spring flexible air pipe in the present application.

[0036] Figure 13 is the structure diagram of the four-way valve in the present application.

[0037] Figure 14 is the structure diagram of the annular liquid reservoir cover in the present application.

[0038] In the figure: liquid reservoir 1, wind needle 2, first driving device 3, key shaft 31, large-diameter end 311, small-diameter end 312, shaft step 313, clamp 314, annular liquid reservoir disc 11, annular open mouth 111, outer ring wall 112, support shaft 12, key shaft perforation 121, support column 13, annular liquid reservoir cavity 14, liquid outlet hole 15, air duct 16, support frame 4, first support plate 41, second support plate 42, third support plate 43, first support rod 44, second support rod 45, shaft perforation 46, through shaft hole 47, bolt hole 48, bolt 49, circular protrusion 5, wind needle mounting hole 51, tail column body 22, tail column cavity 221, middle column body 23, needle tube body 24, needle tube cavity 241, rack 6, vertical rack 61, upper horizontal rack 62, lower horizontal rack 63, air compressor 7, fixed plate 71, four-way valve 8, spring flexible air pipe 81, annular liquid reservoir cover 9. DETAILED DESCRIPTION

[0039] The present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0040] Reference Figure 1 — Figure 14 A gas flow focusing type centrifugal spinning device, the spinning device comprising a liquid reservoir 1, a plurality of wind needles 2 and a first driving device 3.

[0041] The liquid reservoir 1 comprises a ring-shaped liquid storage disc 11, a support shaft 12 and a plurality of support columns 13, the ring-shaped liquid storage disc 11 has a ring-shaped opening 111 on one side, an inner ring wall 112 of the ring-shaped liquid storage disc 11 is provided with a plurality of liquid outlet holes 15 which are in communication with the ring-shaped liquid storage cavity 14;

[0042] The support shaft 12 is located at the center of the ring-shaped liquid storage disc 11, the support shaft 12 is provided with a key shaft through hole 121 at the center, the support shaft 12 is connected with the ring-shaped liquid storage disc 11 through the plurality of support columns 13, the plurality of support columns 13 are distributed circumferentially along the center of the support shaft 12, and air ducts 16 are formed between every two adjacent support columns 13.

[0043] The key shaft 31 of the first driving device 3 penetrates the key shaft through hole 121 and extends outward, is inserted into the liquid reservoir 1 in a matching mode, and rotates to drive the liquid reservoir 1 to perform centrifugal motion; the plurality of air needles 2 are located on one side of the liquid reservoir 1 and are distributed circumferentially along the center of the key shaft 31, and the air outlets 21 of the plurality of air needles 2 all extend towards the air ducts 16.

[0044] The first driving device 3 is fixed on the support frame 4, the support frame 4 comprises a first support plate 41, a second support plate 42 and a third support plate 43 which are sequentially connected, the first support plate 41 and the second support plate 42 are connected through a plurality of first support rods 44, and the second support plate 42 and the third support plate 43 are connected through a plurality of second support rods 45.

[0045] The center of the second support plate 42 is provided with a shaft through hole 46, the side wall of the third support plate 43 close to the liquid reservoir 1 is provided with a circular protrusion 5, the center of the circular protrusion 5 is provided with a through shaft hole 47, the center of the through shaft hole 47 is circumferentially provided with a plurality of air needle mounting holes 51, the body 32 of the first driving device 3 is located in the region between the first support plate 41 and the second support plate 42 and is fixed on the side wall of the second support plate 42, the air needles 2 are connected in the plurality of air needle mounting holes 51, and the key shaft 31 penetrates the shaft through hole 46, the through shaft hole 47 and the liquid reservoir 1 in sequence.

[0046] The spinning device is fixed on the rack 6, the rack 6 comprises a plurality of I-shaped vertical frames 61, a plurality of upper cross frames 62 and a plurality of lower cross frames 63 which are symmetrically arranged, the centers of the plurality of upper cross frames 62 and the plurality of lower cross frames 63 are parallel to each other, the two ends of the plurality of upper cross frames 62 are connected with the middle parts of the plurality of vertical frames 61 respectively, and the two ends of the plurality of lower cross frames 63 are connected with the bottom parts of the plurality of vertical frames 61 respectively.

[0047] The first support plate 41 is provided with a plurality of bolt holes 48, each of which is provided with a bolt 49, and the first support plate 41 is fixed to the vertical frame 61 in the upper area of the upper cross frame 62 through the bolt 49, and the shaft center of the first driving device 3 is parallel to the upper cross frame 62.

[0048] The top surface of the plurality of lower cross frames 63 is fixedly connected with a fixed plate 71, and the top surface of the fixed plate 71 is provided with an air compressor 7, and the air compressor 7 is located in the area between the upper cross frame 62 and the lower cross frame 63; the air compressor 7 is provided with a four-way valve 8, one end of a plurality of spring flexible air pipes 81 is connected to the four-way valve 8, and the other end of the plurality of spring flexible air pipes 81 extends to the area between the second support plate 42 and the third support plate 43, and is connected with a plurality of air needle mounting holes 51 respectively.

[0049] The key shaft 31 comprises a large-diameter end 311 and a small-diameter end 312 connected in sequence, one end of the large-diameter end 311 is connected with the fuselage 32, the other end penetrates the shaft hole 46 and the through shaft hole 47 outward in sequence, the small-diameter end 312 penetrates the key shaft hole 121 outward, the side wall of the support shaft 12 abuts against the shaft step 313, and the end of the small-diameter end 312 is clamped with a clamp 314.

[0050] The air needle 2 comprises a tail cylinder 22, a middle cylinder 23 and a needle tube body 24 connected in sequence, the tail cylinder 22 and the needle tube body 24 are both hollow cylinders, and the middle cylinder 23 is a polygonal cylinder; the tail cylinder 22 is threadedly fixed in the air needle mounting hole 51, and the middle cylinder 23 abuts against the side wall of the circular protrusion 5.

[0051] The diameter of the middle cylinder 23 is greater than that of the tail cylinder 22, and the diameter of the tail cylinder 22 is greater than that of the needle tube body 24; a tail cylinder cavity 221 is formed in the tail cylinder 22, a needle tube cavity 241 is formed in the needle tube body 24, the needle tube cavity 241 extends to the inside of the middle cylinder 23 and communicates with the tail cylinder cavity 221, and the tail cylinder cavity 221 communicates with the air needle mounting hole 51.

[0052] The plurality of support columns 13 are three, which are perpendicular to the shaft center of the support shaft 12 and are uniformly distributed along the shaft center of the support shaft 12, and a fan-shaped air duct 16 is formed between every two adjacent support columns 13.

[0053] The annular liquid storage cover 9 is arranged on the annular liquid storage disc 11, the shape of the annular liquid storage cover 9 matches that of the annular opening 111, the annular liquid storage cover 9 is clamped in the annular opening 111, and the annular liquid storage cavity 14 is sealed.

[0054] The principle of the application is as follows:

[0055] In the application, the high-speed airflow blown by the air needle 2 forms a vacuum area in front of the liquid reservoir 1, thereby driving the surrounding air to gather in the middle, and therefore, the air needle 2 is preferably arranged close to the rotation axis. If the air needle 2 is arranged directly at the liquid outlet hole 15 and blows directly to the spinning solution, the airflow is too dispersed to form a vacuum area, and meanwhile, due to the too strong impact force, the solution is scattered and cannot form complete fibers.

[0056] Embodiment 1

[0057] Referring to Figures 1-14 A centrifugal jetting device with airflow focusing, comprising a liquid reservoir 1, a plurality of air needles 2 and a first driving device 3; the liquid reservoir 1 comprises an annular liquid storage disc 11, a support shaft 12 and a plurality of support columns 13, one side of the annular liquid storage disc 11 has an annular opening 111, an annular liquid storage cavity 14 is formed in the inside of the annular liquid storage disc 11, and a plurality of liquid outlet holes 15 communicating with the annular liquid storage cavity 14 are arranged on the outer ring wall 112 of the annular liquid storage disc 11; the support shaft 12 is located at the axis of the annular liquid storage disc 11, a key shaft through hole 121 is formed at the axis of the support shaft 12, the support shaft 12 is connected with the annular liquid storage disc 11 through a plurality of support columns 13, the plurality of support columns 13 are distributed circumferentially along the axis of the support shaft 12, and air ducts 16 are formed between every two adjacent support columns 13; the key shaft 31 of the first driving device 3 penetrates the key shaft through hole 121 and extends outward, is inserted into the liquid reservoir 1, and rotates to drive the liquid reservoir 1 to perform centrifugal motion; the plurality of air needles 2 are located on one side of the liquid reservoir 1 and are distributed circumferentially along the axis of the key shaft 31, and the air outlets 21 of the plurality of air needles 2 all extend towards the air ducts 16.

[0058] In application, the high-speed airflow blown by the air needle 2 extends forward from the air duct 16, a vacuum environment is formed in front of the air duct 16, the surrounding air converges to the middle, and then drives the surrounding air to move forward. At this time, the first driving device 3 rotates and drives the liquid reservoir 1 to perform centrifugal motion, the spinning solution is ejected outward through the liquid outlet hole 15, the air needle airflow drives the spinning solution to converge to the middle, and the subsequent blown airflow continues to blow the fiber to move forward. Since the liquid reservoir 1 is always rotating, the continuously spun fibers are affected by the rotation to perform curve motion and interweave and superimpose into a net in the air to form a cylindrical composite net structure.

[0059] Embodiment 2

[0060] The basic content is the same as that of embodiment 1, and the difference is that:

[0061] The plurality of support columns 13 are three, which are perpendicular to the axis of the support shaft 12 and are evenly distributed circumferentially along the axis of the support shaft 12, and the air ducts 16 are fan-shaped and formed between every two adjacent support columns 13.

[0062] In application, the three-pronged support structure formed by the three support columns 13 can not only provide excellent support, but also the fan-shaped air ducts 16 formed between each two adjacent support columns 13 can obtain larger air duct 16 area, facilitate more airflow passing through, and reduce flow resistance, so that the airflow is more stable.

[0063] Embodiment 3:

[0064] The basic content is the same as that of embodiment 2, except that:

[0065] The first driving device 3 is fixed on the support frame 4, and the support frame 4 comprises a first support plate 41, a second support plate 42 and a third support plate 43 connected in sequence, the first support plate 41 and the second support plate 42 are connected by a plurality of first support rods 44, and the second support plate 42 and the third support plate 43 are connected by a plurality of second support rods 45; the shaft hole 46 is arranged at the shaft center of the second support plate 42, the circular protrusion 5 is arranged on the side wall of the third support plate 43 close to the liquid reservoir 1, the through shaft hole 47 is arranged at the shaft center of the circular protrusion 5, a plurality of air needle mounting holes 51 are arranged around the shaft center of the through shaft hole 47, the body 32 of the first driving device 3 is located in the region between the first support plate 41 and the second support plate 42, and is fixed on the side wall of the second support plate 42, the plurality of air needle mounting holes 51 are connected with the air needle 2 (preferably threaded connection), and the key shaft 31 is connected with the liquid reservoir 1 by sequentially penetrating the shaft hole 46, the through shaft hole 47 and the liquid reservoir 1.

[0066] In application, the first driving device 3 is installed in the region between the first support plate 41 and the second support plate 42, and is partially suspended, which can reduce the vibration caused by centrifugal motion, and the region between the second support plate 42 and the third support plate 43 provides installation space for the air delivery device of the air needle 2, and the air needle 2 is connected with the air needle mounting hole 51 by screwing, which is convenient for fixing and replacing.

[0067] Embodiment 4:

[0068] The basic content is the same as that of embodiment 3, except that:

[0069] The wind needle 2 comprises a tail cylinder 22, a middle cylinder 23 and a needle tube body 24 connected in sequence, the tail cylinder 22 and the needle tube body 24 are hollow cylinders, the middle cylinder 23 is a polygonal cylinder, the tail cylinder 22 is fixed in the wind needle mounting hole 51 in a threaded manner, and the middle cylinder 23 abuts against the side wall of the circular protrusion 5; the diameter of the middle cylinder 23 is greater than that of the tail cylinder 22, and the diameter of the tail cylinder 22 is greater than that of the needle tube body 24; a tail cylinder cavity 221 is formed in the tail cylinder 22, a needle tube cavity 241 is formed in the needle tube body 24, the needle tube cavity 241 extends into the middle cylinder 23 and communicates with the tail cylinder cavity 221, and the tail cylinder cavity 221 communicates with the wind needle mounting hole 51.

[0070] In application, the cylindrical tail cylinder 22 is convenient for threaded connection, the polygonal middle cylinder 23 is convenient for rotating the wind needle 2, and the needle tube body 24 is arranged so that air entering the needle tube cavity 241 is compressed and accelerated, thereby instantaneously increasing the speed of air flow.

[0071] Embodiment 5:

[0072] The basic content is the same as that in embodiment 4, except that:

[0073] The top surface of the plurality of lower cross frames 63 is fixedly connected with a fixed plate 71, the top surface of the fixed plate 71 is provided with an air compressor 7, and the air compressor 7 is located in the area between the upper cross frame 62 and the lower cross frame 63; the air compressor 7 is provided with a four-way valve 8, one end of a plurality of spring flexible air pipes 81 is connected to the four-way valve 8, and the other end of the plurality of spring flexible air pipes 81 extends into the area between the second support plate 42 and the third support plate 43 and is connected with the plurality of wind needle mounting holes 51, respectively.

[0074] In application, the air compressor 7 is connected with the wind needle 2 through the four-way valve 8, the air flow of the plurality of wind needles 2 can be controlled synchronously, the air speed is controlled by adjusting the air pressure of the air compressor 7, and then the stretching degree of the spun fiber in the air is controlled, so that different forms of spun fiber products are obtained.

[0075] Embodiment 6:

[0076] The basic content is the same as that in embodiment 5, except that:

[0077] The annular liquid storage cover 9 is arranged on the annular liquid storage disc 11, the shape of the annular liquid storage cover 9 matches that of the annular opening 111, and the annular liquid storage cover 9 is clamped in the annular opening 111 to seal the annular liquid storage cavity 14.

[0078] In application, the spinning solution is directly filled into the annular liquid storage tray 11 through the annular opening 111, and then the annular liquid storage cover 9 is clamped in the annular opening 111 to seal, which is simple and convenient to use and can save cost.

[0079] The above merely describes the preferred embodiments of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments, but any equivalent modifications or changes made by those skilled in the art according to the disclosed content of the present application shall be included in the protection scope recorded in the claims.

Claims

1. An airflow focused centrifugal spinneret, characterized by: The spinning device comprises a liquid reservoir (1), a plurality of air needles (2) and a first driving device (3); The liquid reservoir (1) comprises an annular liquid storage disc (11), a support shaft (12) and a plurality of support columns (13), one side of the annular liquid storage disc (11) has an annular opening (111), an annular liquid storage cavity (14) is formed in the annular liquid storage disc (11), and a plurality of liquid outlet holes (15) are arranged on the outer ring wall (112) of the annular liquid storage disc (11) and are in communication with the annular liquid storage cavity (14); The support shaft (12) is located at the center of the annular liquid storage disc (11), a key shaft through hole (121) is formed at the center of the support shaft (12), the support shaft (12) is connected with the annular liquid storage disc (11) through a plurality of support columns (13), the plurality of support columns (13) are distributed circumferentially along the center of the support shaft (12), and air channels (16) are formed between every two adjacent support columns (13); The key shaft (31) of the first driving device (3) penetrates the key shaft through hole (121) and extends outward, is inserted into the liquid reservoir (1) in a fit manner, and rotates to drive the liquid reservoir (1) to perform centrifugal motion; the plurality of air needles (2) are located on one side of the liquid reservoir (1) and are distributed circumferentially along the center of the key shaft (31), and the air outlets (21) of the plurality of air needles (2) all extend towards the air channels (16); The first driving device (3) is fixed on the support frame (4), the support frame (4) comprises a first support plate (41), a second support plate (42) and a third support plate (43) connected in sequence, the first support plate (41) and the second support plate (42) are connected through a plurality of first support rods (44), and the second support plate (42) and the third support plate (43) are connected through a plurality of second support rods (45); The center of the second support plate (42) is provided with a shaft through hole (46), the side wall of the third support plate (43) close to the liquid reservoir (1) is provided with a circular protrusion (5), the center of the circular protrusion (5) is provided with a through shaft hole (47), a plurality of air needle mounting holes (51) are arranged circumferentially around the center of the through shaft hole (47), the body (32) of the first driving device (3) is located in the region between the first support plate (41) and the second support plate (42), is fixed on the side wall of the second support plate (42), the air needles (2) are connected in the plurality of air needle mounting holes (51), and the key shaft (31) penetrates the shaft through hole (46), the through shaft hole (47) and the liquid reservoir (1) in sequence.

2. The airflow focusing type centrifugal spinning device according to claim 1, characterized in that: The spinning device is fixed on a rack (6), the rack (6) comprises symmetrically arranged I-shaped vertical racks (61), upper horizontal racks (62) and lower horizontal racks (63), the shafts of the upper horizontal racks (62) and the lower horizontal racks (63) are parallel to each other, the two ends of the upper horizontal racks (62) are connected to the middle parts of the vertical racks (61) respectively, and the two ends of the lower horizontal racks (63) are connected to the bottom parts of the vertical racks (61) respectively.

3. The airflow focusing type centrifugal spinning device according to claim 2, characterized in that: A plurality of bolt holes (48) are arranged on the first support plate (41), a bolt (49) is arranged in each of the bolt holes (48), the first support plate (41) is fixed on the vertical racks (61) in the upper region of the upper horizontal racks (62) through the bolts (49), and the shaft of the first driving device (3) is parallel to the upper horizontal racks (62).

4. The airflow focusing type centrifugal spinning device according to claim 3, characterized in that: The top surfaces of the lower horizontal racks (63) are fixedly connected with a fixed plate (71), an air compressor (7) is arranged on the top surface of the fixed plate (71), and the air compressor (7) is located in the region between the upper horizontal racks (62) and the lower horizontal racks (63); a four-way valve (8) is arranged on the air compressor (7), one end of a plurality of spring flexible air pipes (81) is connected to the four-way valve (8), the other ends of the spring flexible air pipes (81) extend to the region between the second support plate (42) and the third support plate (43), and are connected with a plurality of air needle mounting holes (51) respectively.

5. The airflow focusing type centrifugal spinning device according to any one of claims 2-4, characterized in that: The key shaft (31) comprises a large-diameter end (311) and a small-diameter end (312) connected in sequence, one end of the large-diameter end (311) is connected with the fuselage (32), the other end extends outward through the shaft through hole (46) and the shaft through hole (47) in sequence, the small-diameter end (312) extends outward through the key shaft through hole (121), the side wall of the support shaft (12) abuts against the shaft step (313), and the end of the small-diameter end (312) is clamped with a clamp (314).

6. The airflow focusing type centrifugal spinning device according to any one of claims 2-4, characterized in that: The air needle (2) comprises a tail cylinder (22), a middle cylinder (23) and a needle tube body (24) connected in sequence, the tail cylinder (22) and the needle tube body (24) are both hollow cylinders, the middle cylinder (23) is a polygonal cylinder, the tail cylinder (22) is threadedly fixed in the air needle mounting hole (51), and the middle cylinder (23) abuts against the side wall of the circular protrusion (5). The diameter of the middle column body (23) is greater than that of the tail column body (22), and the diameter of the tail column body (22) is greater than that of the needle tube body (24); the tail column body (22) is internally formed with a tail column cavity (221), the needle tube body (24) is internally formed with a needle tube cavity (241), the needle tube cavity (241) extends to the inside of the middle column body (23) and is in communication with the tail column cavity (221), and the tail column cavity (221) is in communication with the wind needle mounting hole (51).

7. The airflow focusing type centrifugal spinning device according to any one of claims 1-4, characterized in that: The plurality of support columns (13) are three, perpendicular to the axis of the support shaft (12) and evenly distributed along the axis of the support shaft (12) in a circumferential direction, and a fan-shaped air duct (16) is formed between every two adjacent support columns (13).

8. The airflow focusing type centrifugal spinning device according to any one of claims 1-4, characterized in that: The annular liquid storage cover (9) is matched with the annular opening (111) in shape, and is clamped in the annular opening (111) to seal the annular liquid storage cavity (14).

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