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Multichannel high-efficient electrode with same variable electric field force

A multi-channel, electric field force technology, applied in the direction of electrostatic spraying device, chemical/physical/physicochemical process of energy application, spraying device, etc., can solve the problem of not being able to obtain electric field force at the outlet of the channel at the same time, and achieve easy high-temperature sterilization , uniform particle size, and the effect of reducing the encapsulation voltage value

Active Publication Date: 2009-01-28
ZHANGJIAGANG IND TECH RES INST CO LTD DALIAN INST OF CHEM PHYSICS CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

No matter how the spatial positions of the channels are arranged, it is impossible to obtain an equivalent electric field force at the outlet of each channel at the same time [Document 5. Chinese invention patent, patent number ZL01 1 20095.2]

Method used

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  • Multichannel high-efficient electrode with same variable electric field force
  • Multichannel high-efficient electrode with same variable electric field force
  • Multichannel high-efficient electrode with same variable electric field force

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] 1. Sodium alginate is dispersed in 0.9% saline to form 1.5% (w / v) sodium alginate raw material solution; 1.11% (w / v) CaCl 2 The solution is a gel bath.

[0046] 2. In the case of high-voltage pulse voltage + Upp = 5.0kV, frequency f = 110Hz, pulse width 4ms, threshold voltage U = 1000V, the raw material solution of sodium alginate is 0.075MPa under the pressure of Φ0.4mm Flow out from the sharp hole of the channel, fall into the gel bath to solidify, and form calcium alginate microgel beads with a particle size of 750 μm, and the output is 2000ml / h.

[0047] 3. The prepared microgel beads were observed by the biological inverted microscope CK40 type of Japan Olympus Company (such as figure 2 ).

[0048] 4. Adopt the American Beckman-Coulter company LS-100Q type laser particle size analyzer to measure the particle size and particle size distribution of composite polymer microspheres (such as Figure 4 ).

[0049] 5. Measure the volume of microgel beads collected wit...

Embodiment 2

[0051] 1. Sodium alginate is dispersed in 0.9% saline to form 1.0% (w / v) sodium alginate raw material solution; 1.11% (w / v) CaCl 2 The solution is a gel bath.

[0052] 2. In the case of high-voltage pulse voltage Upp=6.8kV, frequency f=140Hz, pulse width 5ms, threshold voltage U=0V, the raw material solution of sodium alginate under the pressure of 0.085MPa, from nineteen Flow out from the sharp hole of the channel, fall into the gel bath to solidify, and form calcium alginate microgel beads with a particle size of 300 μm, with an output of 400ml / h.

[0053] 3. Same as embodiment 1, the results are shown in image 3 .

[0054] 4. Same as Example 1, the results are shown in Figure 5 .

[0055] 5. Same as embodiment 1.

Embodiment 3

[0057] In the existing literature, the buried electrode formed by the metal ring placed in the gel bath is used as the ground electrode, and the comparison experiment between the buried electrode and this electrode is carried out:

[0058] 1. Sodium alginate is dispersed in 0.9% saline to form 1.5% (w / v) sodium alginate raw material solution; 1.11% (w / v) CaCl 2 The solution is a gel bath.

[0059] 2. Parameter comparison:

[0060]

[0061] 3. The prepared microgel beads were observed by the CK40 biological inverted microscope of Japan Olympus Company, as shown in Figure 6 for details. When the electrode is used and the pulse voltage is reduced by 62%, the generated microcapsules have a better shape.

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Abstract

The invention relates to a multi-channel high-efficiency electrode which can generate same change electric field force simultaneously, comprising a high-volage multi-channel electrode fixed on a support plate of a bracket. The high-voltage multi-channel electrode is of a closed tubular structure, the upper end of which is provided with an air intake and a feed inlet and the bottom of which is a slab shape; the lower part of a slab is provided with 2 or more than 2 metal hollow acerose channels which are electrically connected with the anode end of an external high-voltage pulse power source; the lower end ports of both the metal hollow acerose channels are positioned at a same plane; a low-voltage board electrode is arranged correspondingly below the high-voltage multi-channel electrode, and is of the slab-shaped structure; the low-voltage board electrode corresponding to the lower ends of the metal hollow acerose channels is provided with round holes, the circumferences of which are provided with metal circular rings which are electrically connected with an external high-voltage negative pulse power source; the low-voltage board electrode is connected with the bracket in a sliding way. The multi-channel high-efficiency electrode used in a method of electrostatic atomization can prepare biologic microcapsules with controllable and uniform grain diameters.

Description

technical field [0001] The invention relates to a multi-channel high-efficiency electrode capable of simultaneously generating the same variable electric field force. The electrode can be used for large-scale preparation of biological microcapsules with controllable particle size and uniform particle size by electrostatic atomization method. [Document 1. Taylor G I, Disintegration of water drops in an electric field, Proc. R. Soc. A1964, 280: 383-397] Background technique [0002] Microcapsules are micron-sized capsule carriers with great application prospects, and are widely used in the research of biomedicine, tissue engineering and pharmaceutical fields such as cell culture, drug sustained and controlled release dosage forms, cell transplantation therapy, interventional therapy and gene delivery tools. . The large-scale preparation of microcapsules with uniform particle size is the key equipment for large-scale production of microcapsule products. [0003] Among the ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/04B05B5/00B01J19/08
Inventor 马小军谢威杨吴伟朱静张家明王乐群
Owner ZHANGJIAGANG IND TECH RES INST CO LTD DALIAN INST OF CHEM PHYSICS CHINESE ACADEMY OF SCI
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