A uniform liquid supply system for multi-nozzle high-voltage electrospinning mass production equipment

Abstract

The invention provides a uniform solution feeding system for multi-nozzle electrospinning mass production equipment. The system comprises a spinning solution preparing device, a spinning solution distributing device and a spinning unit, wherein the spinning solution distributing device comprises a spinning solution distributing tank, a row of solution distributing ports are formed in the distributing tank at equal intervals, a return pipe is arranged and connected to the head end and tail end of the distributing tank, a solution distributing valve is arranged at the position, near the tail end of the distributing tank, of the return pipe, and a pressure sensor capable of controlling opening and closing of the solution distributing valve is arranged in the distributing tank; the spinning unit comprises a spinning pipe connected with the distributing tank, a row of spinning nozzles are arranged on the spinning pipe at equal intervals, and a depressurization port is formed in the end, away from the distributing tank, of the spinning pipe. By means of the spinning solution preparing device, the spinning solution distributing device and the spinning unit which are arranged in an integrated mode, preparation and uniform distribution of spinning solutions can be achieved, solutions can be fed to tens of thousands of spinning nozzles uniformly at the same time, so that the spinning solutions sprayed out of the tens of thousands of spinning nozzles have the same pressure and same flow rate, and mass production of electrospinning is achieved.

Description

technical field [0001] The invention provides a liquid supply system, in particular to a uniform liquid supply system for multi-nozzle high-voltage electrostatic spinning mass production equipment. Background technique [0002] At present, electrospinning has become the most important and effective method for preparing nanofibers, but the low yield is the biggest technical obstacle for electrospinning technology to move from laboratory to industrial production and application. Because the diameter of electrospun fibers is below the micron level, the output of a single electrospinning nozzle is about one-thousandth of the commercial high-speed melt spinning process; another process problem in the mass production of electrospinning is the assembly of nozzles , not only to solve the mutual interference of the electric field between the electrospinning nozzles, but also to solve the problem of uniform liquid supply between the electrospinning nozzles. Improving the output of hi...

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Problems solved by technology

[0003] At present, the electrospinning mass production equipment in the world is at the forefront of the nano-spider developed by the Czech company Elmarco, but the nano-spider also has its inherent defects, because the spinning solution is not evenly distributed during the spinning process, and it cannot be produced evenly. nanofiber membrane; in the longitude and weft bidirectional electrospinning membrane equipment developed by the Institute of Physics and Chemistry of the Chinese Academy of Sciences, the distribution of nozzles is too scattered and the production capacity is too low

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