CN-118581581-B - Two-dimensional ultrasonic auxiliary electrostatic spinning device

CN118581581BCN 118581581 BCN118581581 BCN 118581581BCN-118581581-B

Abstract

The invention discloses a two-dimensional ultrasonic auxiliary electrostatic spinning device, which belongs to the technical field of electrostatic spinning and comprises a liquid inlet device, wherein the bottom of the liquid inlet device is connected with an electrostatic spinning jet device, an auxiliary receiving device is arranged below the electrostatic spinning jet device, the electrostatic spinning jet device comprises a nozzle body, an ultrasonic auxiliary electrostatic spinning nozzle is arranged at the lower part in the nozzle body, an ultrasonic transducer assembly used for forming a longitudinal ultrasonic field is arranged on the ultrasonic auxiliary electrostatic spinning nozzle, the auxiliary receiving device comprises a receiving plate, one side of the receiving plate is provided with an ultrasonic transmitting device, and the other side of the receiving plate is provided with an ultrasonic receiving device so as to form a transverse ultrasonic field above the receiving plate.

Inventors

YANG MIN
CUI XIN
LI CHANGHE
ZHOU RUIYU
MA WENQI
GAO TENG
WANG XIAOMING
MA XIAO
LI BENKAI
ZHANG YANBIN
LIU MINGZHENG

Assignees

青岛理工大学

Dates

Publication Date: 20260512
Application Date: 20240628

Claims (5)

1. The two-dimensional ultrasonic auxiliary electrostatic spinning device is characterized by comprising a liquid inlet device, a nozzle body connecting part, an electrostatic spinning jet device, an auxiliary receiving device and a power supply device, wherein the liquid inlet device is arranged at the top of the nozzle body connecting part; the auxiliary receiving device comprises a detachable receiving plate and a receiving plate base, wherein the detachable receiving plate is arranged on the top surface of the receiving plate base, an ultrasonic transmitting device is arranged on the left side of the receiving plate base, an ultrasonic receiving device is arranged on the right side of the base, and the ultrasonic transmitting device and the ultrasonic receiving device are oppositely arranged to form a transverse ultrasonic field above the receiving plate; The ultrasonic receiving device is connected with the ultrasonic signal receiving, processing and conducting device, a piezoelectric wafer I and a matcher are arranged between the ultrasonic receiving device and the ultrasonic signal receiving, processing and conducting device, and the ultrasonic receiving device, the piezoelectric wafer I, the matcher and the ultrasonic signal receiving, processing and conducting device are all fixed in the shell I; The ultrasonic transducer assembly comprises a transducer, wherein an ultrasonic source interface is arranged at the top of the transducer to transmit ultrasonic waves, the ultrasonic source interface is communicated with a spinning solution channel, and a spinning solution injection port is arranged at the ultrasonic source interface; the nozzle body is internally provided with a three-phase flow accelerating chamber, and the top of the three-phase flow accelerating chamber is provided with a spinning solution inlet for the spinning solution to enter; the vertical compressed gas channel is communicated with the built-in compressed gas channel, and the built-in compressed gas channel is communicated with the three-phase flow accelerating chamber through a rotary compressed gas channel; the bottom of the three-phase flow accelerating chamber is provided with a vortex chamber, the side part of the vortex chamber is communicated with the vertical compressed gas channel, and the ultrasonic auxiliary electrostatic spinning nozzle is arranged at the bottom of the three-phase flow accelerating chamber; The spinning solution channel passes through the ultrasonic auxiliary electrostatic spinning nozzle and is connected with the outlet of the three-phase flow accelerating chamber at the top; The detachable receiving plate is provided with a sensor, so that the spraying range of the spinning solution can be monitored in real time, the sensor is matched with the ultrasonic signal receiving, processing and transmitting device on the right side, and the transmitting speed of the ultrasonic transmitting device on the left side, the intensity of ultrasonic waves, the ultrasonic intensity of the upper electrostatic spinning spraying device and the transmitting speed are adjusted through the fluctuation of data.
2. The two-dimensional ultrasonic-assisted electrostatic spinning device according to claim 1, wherein the liquid inlet and air inlet device comprises a transducer shell, a top cover is arranged at the top of the transducer shell, an amplitude transformer is arranged in the transducer shell, a piezoelectric ceramic plate is arranged at the top of the amplitude transformer, a plurality of electrode plates are arranged at the piezoelectric ceramic plate and are connected with a power supply device, and the bottom of the amplitude transformer is connected with a nozzle body.
3. The two-dimensional ultrasonic-assisted electrostatic spinning device of claim 1, further comprising an end cover, wherein a cover cap is fixedly arranged on the top of the end cover, the bottom of the end cover is connected with a motor, the bottom of the motor is connected with an external shell, the motor is connected with a power supply device, and the ultrasonic transducer assembly is arranged at the inner lower part of the external shell.
4. The two-dimensional ultrasonic-assisted electrostatic spinning device according to claim 1, wherein the ultrasonic wave emitting device is connected with the ultrasonic wave generating device, the piezoelectric wafer II is arranged between the ultrasonic wave generating device and the ultrasonic wave emitting device, the piezoelectric wafer II and the ultrasonic wave generating device are all fixed on a fixed plate which is fixedly connected with the shell II.
5. The two-dimensional ultrasonic-assisted electrospinning device of claim 4, wherein the housing I and the housing II are fixedly connected to the receiving plate base.

Description

Two-dimensional ultrasonic auxiliary electrostatic spinning device Technical Field The invention belongs to the technical field of electrostatic spinning, and particularly relates to a two-dimensional ultrasonic auxiliary electrostatic spinning device. Background The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art. Electrostatic spinning is a special form of electrostatic atomization of polymer fluid, and at this time, the atomized and split substances are not tiny liquid drops, but polymer tiny jet flow, and can run for a quite long distance, and finally be solidified into fibers. Electrospinning is a special fiber manufacturing process in which a polymer solution or melt is spun by spraying in a strong electric field. Under the action of the electric field, the droplet at the needle will change from a sphere to a cone shape (i.e. "taylor cone") and extend from the tip of the cone to obtain a fiber filament. In this way, polymer filaments of nanoscale diameter can be produced. However, defects that spinning motion is irregular and expected forming effect cannot be achieved on the collecting plate can occur in the electrostatic spinning process. Therefore, the method is particularly important for the track and the flow velocity of jet flow in the electrostatic spinning process. To have the trajectory and flow rate of the jet follow the desired protocol, intervention of the jet during spinning is required, but no maturation protocol is currently available for such intervention jet. In search, the state of Illinois spray systems company D.J.Philippica et al, U.S. invented an ultrasonic atomizing nozzle (patent number ZL 200880125586.7) with cone-shaped spray characteristics, which applies pressurized air to the nozzle assembly and intercommunicated ports, compartments, channels direct the pressurized air to the atomizing surface. To obtain a cone-shaped spray, the ports, compartments, channels direct pressurized gas to rotate around the atomizing rod. As the rotating pressurized gas exits the nozzle assembly adjacent the atomizing surface, atomized droplets are entrained in the gas. The rotating pressurized gas pushes the droplets forward, which move circumferentially outward in a conical spray. Through retrieval, the Quantum port petrochemical institute Qian Qingrong of Fujian university and the like invents an ultrasonic auxiliary electrostatic spinning device (patent number: ZL 201610300805.7), an ultrasonic auxiliary system comprises an ultrasonic generator, an ultrasonic transducer, a hollow water tank and a low-temperature constant-temperature water bath, wherein the ultrasonic transducer is fixed on the outer side of the hollow water tank and is connected with the ultrasonic generator to provide a high-frequency alternating current signal for generating ultrasonic waves in the hollow water tank, and the low-temperature water bath is used for controlling the temperature of water in the hollow water tank. Through searching, the Qingdao bioenergy and process research institute Kong Qingshan and the like of China academy of sciences invent an ultrasonic-assisted electrostatic spinning nanofiber preparation device (patent number: ZL 201220603914.3) combines an ultrasonic generator and an electrostatic spinning preparation technology, plays the characteristic that polymer solution forms micro-droplets under the action of ultrasonic waves, overcomes the surface tension of the solution and the gravity of the droplets, is very easy to form jet liquid flow under the action of a high-voltage electric field, forms nanofibers, and improves the efficiency of preparing the nanofibers by electrostatic spinning. Meanwhile, the equipment has the characteristics of simple structure and convenient use, and can be used for preparing various nanofiber materials. Through searching, minjiang academy Ke Huizhen and the like invents an ultrasonic-assisted electrostatic spinning nanofiber preparation device (patent number: ZL 201921287240.9), the ultrasonic-assisted electrostatic spinning nanofiber preparation device is convenient to prepare and operate, safe and automatic electrostatic spinning nanofiber preparation can be provided with a multifunctional preparation device, and an automatic high-voltage electrostatic generator device can be used for preparing and providing power in real time. The ultrasonic generator device can receive the transmitted signal in real time, assist the preparation of the electrostatic spinning nanofiber, timely receive the signal, reduce signal interruption, greatly improve the practicability of the preparation of the electrostatic spinning nanofiber, shorten the preparation time, ensure the safe and reliable preparation and realize truly dialectical addition and subtraction. Through searching, the Beijing Yongkangle science and technology development limited company He Kunyun and the like invents an electrostat