Double-flow monodisperse droplet flow generation method and device

A generating device and monodisperse technology, applied in chemical instruments and methods, fluid controllers, measuring tubes/pipettes, etc., to achieve the effects of precise control of the frequency range, simple operation, and improved utilization efficiency

Pending Publication Date: 2020-07-24
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Through the search of the prior art literature, it is found that there is no related device that can simultaneously generate two streams of monodisperse droplet streams with different morphological parameters

Method used

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  • Double-flow monodisperse droplet flow generation method and device
  • Double-flow monodisperse droplet flow generation method and device
  • Double-flow monodisperse droplet flow generation method and device

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Embodiment Construction

[0043] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0044] like figure 1As shown, the dual-flow monodisperse droplet flow generating device provided in this embodiment includes: a droplet flow generator 1 , a syringe 2 , a syringe pump 3 , a liquid storage bottle 4 , and a piezoelectric driver 5 .

[0045] like figure 2 As shown, the droplet flow generator 1 includes: an external thread adapter 101, an internal thread pressure ring 102, an annular end cap 103, a "T"-shaped cylinder 104, a piezoelectric ceramic sheet 105, a support chamber 106, a spray chamber 108 and Spray cavity fixing cap 107; "T" type cylinder 104 is placed inside the annular end cover 103, and the piezoelectric ceramic sheet 105 is fixed on the shoulder of the support cavity 106; one end of the external thread adapter 101 is connected to the support cavity 106 through threads, The other end is connected with the intern...

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Abstract

The invention discloses a double-flow monodisperse droplet flow generation method which comprises the following steps that: an injection pump pushes an injector to continuously inject liquid in a liquid storage bottle into a droplet flow generator, and the liquid is injected into air from two micropores of the droplet flow generator to form two jets; and a piezoelectric actuator sends voltage disturbance waves to a piezoelectric ceramic piece in the droplet flow generator, a droplet flow generator is driven to generate vibration with a certain frequency, and disturbance waves are formed on thetwo jets and broken into two beams of monodisperse droplet flows. The invention also discloses a double-flow monodisperse droplet flow generation device. The device comprises a droplet flow generator, an injector, an injection pump, a piezoelectric actuator and a liquid storage bottle, the droplet flow generator comprises a piezoelectric ceramic piece, and the piezoelectric actuator is connectedwith the piezoelectric ceramic piece. The double-flow monodisperse droplet flow generation method and device provided by the invention can solve the control problem of multi-beam droplet jet flow, andrealize droplet flow generation of different droplet particle sizes, droplet intervals and flow beam intervals.

Description

technical field [0001] The invention relates to the field of droplet preparation, in particular to a method and device for generating a double-flow monodisperse droplet flow. Background technique [0002] In the fields of inkjet printing, circuit board packaging, pesticide spraying, fuel spray combustion in combustion chambers, spray cooling, etc., the generation of micron-sized droplets has very high application value. The observation of single droplet and monodisperse droplet flow behavior is of great significance in the fields of spray collision, breakup, evaporation and combustion. Therefore, the production of micron-sized droplets with controllable initial parameters has a great demand in the fields of industry and scientific research. [0003] Micron-sized droplet jetting is mainly divided into five categories: piezoelectric, thermal bubble, valve-controlled, electrostatic and micro-injection. Among them, the piezoelectric type and the thermal bubble type are current...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01L3/02
CPCB01L3/0241B01L2400/02
Inventor 吴迎春吴学成吕绮梦岑可法
Owner ZHEJIANG UNIV
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