CN217869220U

CN217869220U - Spinning device with rotary disc needle head

Info

Publication number: CN217869220U
Application number: CN202222244102.0U
Authority: CN
Inventors: 樊培志; 徐岚
Original assignee: Suzhou University
Current assignee: Suzhou University
Priority date: 2022-08-25
Filing date: 2022-08-25
Publication date: 2022-11-22
Anticipated expiration: 2032-08-25

Abstract

The application relates to a rotating disc needle spinning device, it includes: the spinning machine comprises a fixing assembly, a liquid supply assembly, a spinning assembly, a receiving assembly, a power supply assembly and a driving piece. The spinning assembly is arranged below the liquid supply assembly, and a liquid supply mode from top to bottom is adopted, so that the phenomenon of blockage caused by bubbles easily generated by liquid supply from bottom to top or transverse liquid supply of the traditional spinning device is avoided. The spinning assembly comprises a rotating disk and at least two externally-connected needle ports, wherein the rotating disk can rotate around the circle center under the driving of a driving piece, and the spinning assembly is combined with a circular ring-shaped receiving piece which is arranged on the outer side of the rotating disk and has the same circle center with the rotating disk, so that the receiving distance is consistent, a uniform nanofiber membrane can be obtained, and meanwhile, electrostatic interference is avoided. Through setting up the large-size reservoir and a plurality of external needle mouth that can supply liquid constantly, not only but also can avoid the short time to supply liquid many times in batch production nanofiber, improved efficiency and spinning output.

Description

Spinning device with rotary disc needle head

Technical Field

The utility model relates to a rotating disc syringe needle spinning equipment belongs to electrostatic spinning technical field.

Background

Electrospinning is currently the most common method used in the world to produce nanofibers. In recent years, due to the rapid temperature rise of nano material research, the great interest of people in deep research on electrostatic spinning is aroused. The principle of electrostatic spinning is that electrostatic force provided by a high-voltage electric field is utilized to overcome surface tension of a polymer liquid surface, a Taylor cone is formed on the polymer liquid surface, jet flow is further formed, and the jet flow is attenuated into nano fibers under the action of an electric field force. The electrostatic spinning technology has the advantages of simple operation, wide application range, relatively high production efficiency and the like, and the spun nano-fiber is thin, large in specific surface area and high in porosity, and becomes a research hotspot.

The traditional electrostatic spinning equipment has low spinning efficiency, and limits the batch production of the nano fibers, and under the condition, the multi-needle electrostatic spinning is carried out at the same time. However, the conventional multi-needle spinning only increases the number of injectors and changes the pitch, and although mass production of nanofibers can be achieved, there are disadvantages: the electric fields mutually influence each other, and the spinning state can not be continuous; the different distances from the spinning needle to the receiver at different locations may result in uneven fiber film thickness. In addition, the traditional multi-needle spinning device supplies liquid from bottom to top or transversely supplies liquid, so that air bubbles are easily generated to cause the blockage phenomenon; in addition, the traditional multi-needle spinning device supplies liquid independently for each injector, which influences the continuous preparation of the nanofiber membrane. Although the external liquid supply device can effectively supply liquid, the power supply needs to be turned off, and the liquid supply has high-pressure risk in a working state, so that the yield of the nano fibers is influenced.

Therefore, it is necessary to invent a new type of multi-needle spinning device to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a spinning device of rotating disc syringe needle to solve foretell technical problem.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a rotary disk needle spinning apparatus comprising:

the fixing component comprises a base and a supporting piece arranged on the base;

the liquid supply assembly is arranged on the support piece and comprises a liquid storage device and a flow pump which is arranged outside the liquid storage device and connected with the liquid storage device;

the spinning assembly is arranged below the liquid storage device and comprises a rotating disc, at least two external needle head ports and a channel, the center of the rotating disc is provided with a hollowed groove, the channel is arranged in the rotating disc and is used for communicating the groove with the external needle head ports, the rotating disc is rotatably connected with the liquid storage device through a connecting bearing, the connecting bearing is inserted into the groove, spinning solution in the liquid storage device flows out from a solution outlet on the lower end face of the liquid storage device under the action of the flow pump and sequentially passes through the connecting bearing, the groove, the channel and the external needle head ports;

the receiving piece is arranged on the outer periphery side of the rotating disc and is concentric with the rotating disc, and the receiving piece is shaped like a circular ring;

the power supply assembly comprises a high-voltage power supply which is arranged on the outer side of the receiving piece and is used for providing a high-voltage electrostatic field between the spinning assembly and the receiving piece;

a driving element connected with one of the receiving element and the rotating disk to drive one of the rotating disk and the receiving element to rotate around the center of the circle relative to the other.

Further, at least two external needle ports are equidistantly arranged on the side surface of the rotating disc.

Furthermore, a needle head is detachably connected to the external needle head port, spinning solution is sprayed out through the needle head, and the nano fibers formed under the action of the high-voltage power supply are received by the receiving piece.

Furthermore, the external needle port has a closed state and an open state, and when the external needle port is in the closed state, the space between the external needle port and the needle head is blocked; when the external needle port is in the open state, the external needle port is communicated with the needle.

Further, the needle comprises a plurality of specifications, and the inner diameter of the needle ranges from 0.16mm to 1.90mm.

Furthermore, the power supply assembly further comprises at least two power chucks arranged on the rotating disc and connected with the high-voltage power supply, and the power chucks and the external needle ports are arranged in a one-to-one correspondence manner.

Furthermore, the rotating disc is detachably connected with the connecting bearing, and the external needle head port is detachably connected with the rotating disc.

Further, the reservoir volume was 50ml.

Furthermore, the driving part is a motor, and the driving part drives the rotating disc to rotate around the circle center.

Further, the support part is an L-shaped metal arm, and the liquid reservoir and the flow pump are respectively and fixedly connected with the support part.

The beneficial effects of the utility model reside in that:

1. the utility model has the advantages that by arranging the driving piece, the rotating disc and the annular receiving piece, one of the rotating disc and the receiving piece is driven by the driving piece to rotate around the circle center relative to the other one in the spinning process to drive the rotating disc to rotate, so that the receiving distance is ensured to be consistent all the time, and uniform nanofiber membranes can be obtained;

2. the liquid storage device is arranged above the rotary disc, adopts a top-to-bottom liquid supply mode, and avoids the phenomenon that the traditional spinning device is easy to generate bubbles to cause blockage due to the fact that liquid is supplied from top to bottom or transversely supplied;

3. the utility model discloses an equidistance sets up external needle mouth and syringe needle in the rotating disc periphery for the spinning direction is not same direction, can reduce the electrostatic interference between the syringe needle, and then guarantees the efflux stability, and simultaneously, external needle mouth has further increased the distance between the different syringe needles, has reduced the interference between electric field interference and the efflux;

4. the utility model discloses a but set up the large-size reservoir and a plurality of external needle mouth that supply liquid constantly, not only batch production nanofiber can also avoid the short time to supply liquid many times, raises the efficiency and the spinning output.

The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of the spinning device with a rotating disc needle shown in the present invention.

Wherein:

1. a fixing component; 11. a base; 12. a support member; 2. a liquid supply assembly; 21. a reservoir; 22. a flow pump; 23. connecting a bearing; 3. a spinning assembly; 31. spinning a disc; 32. the needle port is externally connected; 4. a receiver; 5. a power supply assembly; 51. a high voltage power supply; 52. a power supply cartridge; 53. a ground electrode; 6. a drive member.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

The utility model relates to a shown rotating disc syringe needle spinning equipment of embodiment for the even nanofiber of high-efficient mass production thickness can also avoid the electric field interference that probably appears in the spinning process and the jam phenomenon that causes by the bubble.

Referring to fig. 1, the spinning apparatus includes: the device comprises a fixing component 1, a liquid supply component 2, a spinning component 3, a receiving component 4, a power supply component 5 and a driving component 6.

The fixing assembly 1 includes a base 11 and a supporting member 12 disposed on the base 11.

The liquid supply assembly 2 is disposed on the support 12 and includes a liquid reservoir 21 and a flow pump 22 disposed outside the liquid reservoir 21 and connected to the liquid reservoir 21. The liquid reservoirs 21 with different volumes can be selected according to spinning requirements, and the large-size liquid reservoir 21 with the volume of 50ml is selected in the embodiment, so that liquid can be supplied to the spinning device continuously, and the liquid supply operation can be performed without stopping spinning for many times in the spinning process.

The spinning assembly 3 is disposed below the liquid reservoir 21, and includes a rotating disk 31 having a hollow groove at the center, at least two external needle ports 32 equidistantly disposed on the side of the rotating disk 31, and a channel disposed inside the rotating disk 31 and used for communicating the groove with the external needle ports 32. The spinning solution in the reservoir 21 flows out from a solution outlet at the lower end face of the reservoir 21 under the action of the flow pump 22, and enters the spinning pack 3 below the reservoir 21. The liquid supply from top to bottom is adopted, so that the phenomenon of blockage caused by easy bubble generation of liquid supply from bottom to top or transverse liquid supply is avoided.

At least two external needle ports 32 are equidistantly arranged on the side surface of the rotating disc 31, so that the spinning directions are not the same, the electrostatic interference between the needles can be reduced, and the stability of jet flow is further ensured.

Further, needles with different diameters are detachably connected to the at least two external needle ports 32, so as to obtain nanofiber membranes with different diameters. Meanwhile, the external needle port 32 further increases the distance between different needles, and reduces the interference between electric fields and jet flows.

Preferably, in this embodiment, six external needle ports 32 are provided, so that the spinning efficiency and the jet stability can be ensured at the same time. In other embodiments, the external needle port 32 may be provided with two, three, four, five, seven, etc., as desired, but not limited thereto.

Further, the external needle port 32 is detachably connected to the side surface of the rotating disc 31, so that the external needle port 32 can be conveniently cleaned, the spinning of the nano fibers made of various different materials is realized, and the maintenance and the replacement are convenient.

In the above, needles with different diameters are detachably connected to the six external needle ports 32, the inner diameter of each needle ranges from 0.16mm to 1.90mm, and the specification of the selected needle in the embodiment is any one of the six specifications of 14G 1.71mm, 15G 1.50mm, 16G 1.32mm, 18G 0.90mm, 19G 0.84mm and 20G 0.62mm, so that the requirements of common electrospinning can be basically met. In other embodiments, the needle size may also be selected from different sizes, such as 13G 1.90mm, 28G 0.19mm, 30G 0.16mm, and the like, which is not limited herein.

It should be noted that, at the same time, the diameters of the needles on the six external needle ports 32 are consistent, so as to ensure the uniformity of the prepared nanofibers.

Further, the external needle port 32 has a closed state and an open state, when the external needle port 32 is in the closed state, the space between the external needle port 32 and the needle is blocked, and the spinning solution cannot enter the needle; when the external needle port 32 is in an open state, the external needle port 32 is communicated with the needle, and the spinning solution can enter the needle through the external needle port 32 and then be sprayed out from the needle. The state of the external needle port 32 can be adjusted according to the spinning requirements to adjust the production efficiency of the nanofibers.

The state of the external needle port 32 may be controlled by a control member, or manually adjusted, and is not limited herein. The structure for opening or closing the external connection needle port 32 is not particularly limited, and may be a valve or a spring clip.

The receiving element 4 is arranged on the outer periphery of the rotating disc 31 and is concentric with the rotating disc 31, and the spinning solution is sprayed out through a needle head, forms nanofibers under the action of an electric field force and is received by the receiving element 4. The receiver 4 is a circular ring in shape, so that the condition that the thickness of the nanofiber film is not uniform due to inconsistent receiving distance can be avoided, and the quality of the prepared nanofiber is improved.

The driving element 6 is connected with one of the receiving element 4 and the rotating disk 31 to drive the rotating disk 31 and the receiving element 4 to rotate around the center of the circle relative to the other one, so that the receiving distances from the needle head to different positions of the receiving element 4 are always consistent, and the nanofiber film with uniform thickness can be obtained.

In this embodiment, the driving member 6 is a motor, and the driving member 6 drives the rotating disc 31 to rotate around the center of the circle. The motor drives the rotating disk 31 with relatively small volume and mass to rotate, so that the power consumption can be reduced as much as possible while the receiving distance is ensured to be consistent all the time, and the energy is saved.

Furthermore, the spinning assembly 3 further comprises a connecting bearing 23, the rotating disc 31 is rotatably connected with the liquid reservoir 21 through the connecting bearing 23, the connecting bearing 23 is inserted into the groove, the spinning solution in the liquid reservoir 21 flows out from a solution outlet on the lower end face of the liquid reservoir 21 under the action of the flow pump 22, sequentially passes through the connecting bearing 23, the groove, the channel and the external needle port 32, is ejected from the needle, and forms nanofibers under the action of the electric field force to be received by the receiving element 4. The connection bearing 23 is detachably connected to the rotary disk 31, which facilitates the cleaning of the device when the spinning solution is replaced.

The power supply assembly 5 comprises a high-voltage power supply 51 arranged outside the receiving member 4 and used for providing a high-voltage electrostatic field between the spinning assembly 3 and the receiving member 4, a grounding electrode 53 connected with the receiving member 4, and at least two power supply chucks 52 arranged on the rotating disc 31 and connected with the high-voltage power supply 51, wherein the power supply chucks 52 are arranged in one-to-one correspondence with the external needle ports 32. In this embodiment, six power cartridges 52 are provided. A power cartridge 52 may be attached to the needle to provide the required high voltage electrostatic field to generate the above-described force.

The support member 12 is an L-shaped metal arm, the reservoir 21 and the flow pump 22 are respectively fixedly connected to the support member 12, and the connecting bearing 23 is rotatably connected to the rotating disk 31 to ensure the stability of the reservoir 21 and the flow pump 22 when the driving member 6 drives the rotating disk 31 to rotate.

The specific implementation method of the application comprises the following steps: selecting a needle head with a proper specification according to requirements, enabling a corresponding external needle head to be in an open state, injecting a target spinning solution into a liquid storage device, and starting a high-voltage power supply, a flow pump and a motor; the spinning solution in the liquid reservoir flows out from a solution outlet on the lower end face of the liquid reservoir under the action of a flow pump, sequentially passes through a connecting bearing, a groove, a channel and an external needle head port, is sprayed out from a needle head, and forms nano fibers under the action of an electric field force to be received by a receiving piece; the motor drives the rotating disc to rotate, so that the receiving distances from the needle head to different positions of the receiving piece are consistent all the time, and the nanofiber membrane with uniform thickness is obtained.

To sum up, the utility model, through the arrangement of the driving piece, the rotating disc and the annular receiving piece, in the spinning process, one of the rotating disc and the receiving piece is driven by the driving piece to rotate around the center of a circle relative to the other one, so that the receiving distance is ensured to be consistent all the time, and the uniform nanofiber membrane can be obtained; the liquid storage device is arranged above the rotating disc, and adopts a top-to-bottom liquid supply mode, thereby avoiding the occurrence of the blocking phenomenon caused by bubbles easily generated by the liquid supply from bottom to top or the transverse liquid supply of the traditional spinning device; the utility model discloses an equidistance sets up external needle mouth and syringe needle in the rotating disc periphery for the spinning direction is not same direction, can reduce the electrostatic interference between the syringe needle, and then guarantees the efflux stability, and simultaneously, external needle mouth has further increased the distance between the different syringe needles, has reduced the interference between electric field interference and the efflux; the utility model discloses a but set up the large-size reservoir and a plurality of external needle mouth that supply liquid constantly, not only batch production nanofiber can also avoid the short time to supply liquid many times, raises the efficiency and the spinning output.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A spinning apparatus with a rotating disc needle, comprising:

a driving element connected to one of the receiving element and the rotating disk to drive the rotating disk and the receiving element to rotate relative to each other about the center of the circle.

2. The rotary disk needle spinning apparatus of claim 1, wherein at least two of said extension needle ports are equally spaced laterally from said rotary disk.

3. The spinning disk needle spinning device of claim 2, wherein a needle is removably attached to said external needle port, through which spinning solution is ejected, and nanofibers formed by said high voltage power source are received by said receiver.

4. The spinning disk needle as recited in claim 3, wherein said external needle port has a closed position and an open position, and said external needle port is sealed from said needle when said external needle port is in said closed position; when the external needle port is in the open state, the external needle port is communicated with the needle.

5. The rotary disk needle spinning apparatus of claim 3, wherein said needles have an inner diameter in the range of 0.16 to 1.90mm.

6. The spinning apparatus as claimed in claim 2 wherein said power supply assembly further comprises at least two power cartridges disposed on said spinning disk and connected to said high voltage power supply, said power cartridges being disposed in one-to-one correspondence with said external needle ports.

7. The rotating disc needle spinning device of claim 1, wherein said rotating disc is removably attached to said attachment bearing, and said extension needle port is removably attached to said rotating disc.

8. The spinning disk needle spinning apparatus of claim 1, wherein said accumulator has a volume of 50ml.

9. The rotary disk needle spinning apparatus of claim 1, wherein said drive member is a motor, said drive member driving said rotary disk to rotate about a center of a circle.

10. The spinning disk needle hub device of claim 1 wherein said support member is an "L" shaped metal arm and said reservoir and said flow pump are each fixedly attached to said support member.