Coaxial nozzle for electrofluid spray printing

A coaxial nozzle, electro-fluid technology, used in textile and papermaking, filament/thread forming, fiber processing, etc., can solve the problem that the nozzle structure cannot realize the adjustment of the solution flow, the relative height of the inner and outer nozzles cannot be adjusted, and the nozzle structure is difficult to process. Large and other problems, to achieve the effect of easy installation and positioning, reduce processing difficulty, and improve accuracy

Active Publication Date: 2014-07-09
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0011] The purpose of the present invention is to overcome the relative heights of the inner and outer nozzles in the coaxial nozzles of the electrofluid jet printing in the prior art, the non-replaceable nozzle structure cannot realize the adjustment of the solution flow rate, and the replaceable nozzle structure is difficult to process. For defects and deficiencies such as low precision, a new type of coaxial nozzle for electrofluid jet p

Method used

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  • Coaxial nozzle for electrofluid spray printing
  • Coaxial nozzle for electrofluid spray printing
  • Coaxial nozzle for electrofluid spray printing

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Embodiment Construction

[0037] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0038] see figure 1 , the coaxial nozzle for electrofluid jet printing provided by the present invention includes an outer nozzle 1 and an inner nozzle 2 . Wherein, the outer nozzle 1 includes an outer spray barrel 11 and an outer spray head 12 sleeved on the nozzle end of the outer spray barrel 11 , and the outer spray head 12 communicates with the outer spray barrel 11 . The end of the outer spray tube 11 away from the nozzle is provided with a shaft hole with a diameter larger than the diameter of the inner tube of the outer spray tube 11, and a hollow cylindrical connecting seat 3 is sleeved in the shaft hole, and the connecting seat 3 and the outer spray tube 11 are transitionally fitted. The middle part of the connecting seat 3 is provided with an axial stepped hole, and the diameter of the stepped hole located on the outer sid...

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Abstract

The invention discloses a coaxial nozzle for electrofluid spray printing. The coaxial nozzle comprises an outer nozzle and an inner nozzle. An axle hole is formed in the bottom of the outer nozzle and is connected with a connecting seat in a sleeved manner, an axial stepped hole is formed in the connecting seat, a base of the inner nozzle is sleeved in the stepped hole, a centring support is sleeved in the inner barrel, close to one side of the spout, of the outer nozzle, one end of an inner spraying needle is fixed on the base of the inner nozzle while the other end of the same penetrates a positioning through hole of the centring support to be fixed, a piezoelectric ceramic driver is connected to the outer wall of the connecting seat in a sleeved manner and is fixedly connected with an outer spraying barrel. The relative height of the inner nozzle and the outer nozzle can be precisely adjusted through the piezoelectric ceramic driving device, relative flow rate of different fluid in the inner and outer layers can be precisely controlled, the structural thickness of each 'shell' layer of coaxial spinning can be more precisely controlled, and coaxial centring precision of the inner and outer nozzles can be improved by the arrangement of the centring support.

Description

technical field [0001] The invention relates to a coaxial nozzle device, in particular to a coaxial nozzle used for preparing multi-layer nanofibers and multi-layer composite droplets by electrofluid jet printing. Background technique [0002] Electrofluidic jet printing is an important method for preparing multilayer nanofibers and multilayer composite droplets. The electrofluid jet printing method adopts the coaxial nozzle device of the sleeve type needle, sprays two or more different polymer solutions through the coaxial nozzle, and obtains a uniform, long-sized multilayer with a "shell-core" structure. coaxial nanofibers, or to obtain multilayer composite droplets with a "shell-core" structure. Multilayer composite droplets and / or "hollow powder" structured fibers have great potential in the fields of microfluidics, optoelectronics, and energy storage, and a large number of devices are yet to be developed. [0003] Coaxial nanofibers prepared by current jet printing in...

Claims

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Application Information

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IPC IPC(8): D01D5/34D01D5/00
CPCD01D5/0069D01D5/34
Inventor 黄永安丁亚江尹周平潘艳桥布宁斌
Owner HUAZHONG UNIV OF SCI & TECH
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