Liquid supplying device for solution electrostatic spinning

Abstract

The invention discloses a liquid supplying device for solution electrostatic spinning. The liquid supplying device comprises a driving unit, a liquid supplying unit and a control unit. The driving unit comprises left screw sets, right screw sets, left stepping motor sets, right stepping motor sets and pushing plates, wherein the left stepping motor sets and the right stepping motor sets are connected with the left screw sets and the right screw sets, two threaded holes are formed in each pushing plate, and two screws of the same screw set penetrate through the two threaded holes in the same pushing plate; the liquid supplying unit comprises a left liquid supplying barrel, a right liquid supplying barrel, two pistons, piston rods and a spiral mixing tube, wherein the two pistons and the piston rods are installed inside the left liquid supplying barrel and the right liquid supplying barrel respectively, a first liquid supplementing tube and a first one-way valve are connected to the lower left corner of the left liquid supplying barrel, and a second liquid supplementing tube and a second one-way valve are connected to the lower right corner of the right liquid supplying barrel; the control unit comprises a control panel, limiting switches and a controller which is in communication connection with the control panel and the limiting switches. Electronic control is adopted, and theliquid supplying device can automatically supplement a spinning solution and prepare spinning solutions of different concentrations, and is easy and convenient to use and high in precision.

Description

technical field [0001] The invention relates to the field of electrospinning, in particular to a liquid supply device for solution electrospinning. Background technique [0002] Nanofiber refers to a linear material with a diameter of nanoscale and a large length with a certain aspect ratio. Due to its large specific surface area and special surface effects, nanofibers are widely used in filter materials, life sciences, etc. , protective clothing and nano-sensors and other fields; electrospinning technology is one of the simplest and most effective methods for producing nanofibers, and common electrospinning methods include solution electrospinning and melt electrospinning. The solution electrospinning method is mature and widely used. At present, the common solution electrospinning equipment on the market usually prepares the spinning solution and puts it into the syringe, and then squeezes the spinning solution through the syringe. The method needs to stop and replenish t...

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Problems solved by technology

[0002] Nanofiber refers to a linear material with a diameter of nanoscale and a large length with a certain aspect ratio. Due to its large specific surface area and special surface effects, nanofibers are widely used in filter materials, life sciences, etc. , protective clothing and nano-sensors and other fields; electrospinning technology is one of the simplest and most effective methods for producing nanofibers, and common electrospinning methods include solution electrospinning and melt electrospinning. The solution electrospinning method is mature and widely used. At present, the common solution electrospinning equipment on the market usually prepares the spinning solution and puts it into the syringe, and then squeezes the spinning solution through the syringe. The method needs to stop and replenish the spinning solution every time after the spinning solution is used up, which is not only cumbersome to operate, but also seriously affects the spinning efficiency. In order to observe the spinning situation at different concentrations, the traditional liquid supply device needs to stop constantly, and add various concentrations of hand-prepared spinning solutions into the syringe, which not only affects the speed of experimental research, but also artificially prepared There may be a large error in the concentration of the spinning solution, which affects the accuracy of the experimental research results. Furthermore, the solvents used in solution electrospinning are mostly toxic organic solvents, which will pose a threat to the health of the operators who prepare the spinning solution

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