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Gas-liquid dispersing and stirring device

A stirring device and stirrer technology, which is applied to mixers with rotating stirring devices, transportation and packaging, mixers, etc., can solve the problems of low power consumption, mixing performance and dispersion efficiency, etc., and achieve enhanced gas holding performance , reduce cavitation, improve the effect of air flooding point

Active Publication Date: 2017-01-04
ZHENJIANG EAST BIOTECH EQUIP & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although the BT-6 paddle has made great progress compared with the Rushton agitator, its overall mixing performance and dispersion efficiency have not yet met people's requirements. Therefore, it is necessary to design an agitator with lower power consumption and higher efficiency

Method used

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Examples

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Effect test

Embodiment 1

[0049] Embodiment 1: stirring device

[0050] Such as figure 1 , figure 2 and Figure 6 Shown, the agitator (30) involved in the present invention comprises an agitator (21), an agitator shaft (22) and a set of power unit (23), wherein the agitator (21) comprises a disc (19) , a hub (20) and several radially extending blades (18).

[0051] The blade (18) is obtained by increasing a certain thickness backward from the liquid-facing surface (16), and the blade (18) is obtained after thickening, and the back liquid surface (17) is obtained.

[0052] The axial section of blade (18) is V font, and the inner contour line of V font is called section line, and its shape can be parabola, hyperbola, ellipse arc and arc line etc., is good with parabola.

[0053] Such as image 3 and Figure 4 As shown, the horizontal plane where the center of the disk is located As the boundary, the section line can be divided into upper and lower parts. The intersection point of the upper and ...

Embodiment 2

[0072] Embodiment 2: the application of stirring device

[0073] The best agitating device of the embodiment of the present invention 1 is compared with traditional BT-6 type agitator, compares and carries out in the agitating tank that has standard ellipse head, and agitating tank diameter is 175mm, cylinder height 415mm, liquid volume 34L, the diameter of the stirrer is 60mm, and the stirring speed is 300r / min. The results show that the radial displacement of the stirring device of the present invention is 92% of that of the BT-6 type agitator, while the power consumption is 75% of that of the BT-6 type agitator, and the liquid discharge efficiency is 1.22 times of that of the BT-6 type agitator .

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Abstract

The invention discloses a gas-liquid dispersing and stirring device and belongs to the technical field of fluid mixing. Every blade of the gas-liquid dispersing and stirring device consists of a radially extending and highly shrinking concave, the vertex of the concave is positioned at the intersection position of the concave and a disk plane and extends perpendicularly along the tangential direction. The upper half and the lower half of an inner margin curve of every concave are asymmetric, the upper half extension length is greater than the lower half extension length, but the upper half and the lower half of an outer margin curve of the concave are symmetric; the vertical height of the inner margin of the concave is greater than that of the outer margin thereof, but the tangential extension length of the outer margin of the concave is greater than that of the inner margin thereof. The inner sides of the blades are beneficial to catching ascending bubbles and making the same disperse into a liquid phase, and in an outward extension process of the blades, the vertical height of every blade decreases gradually. The gas-liquid dispersing and stirring device has the advantages of low power consumption, high gas-liquid dispersion efficiency and mixing performance and capability of dispersing gas into a liquid phase system or liquid-solid system in an efficient energy-saving way.

Description

technical field [0001] The invention relates to a gas-liquid dispersing and stirring device, which belongs to the technical field of fluid mixing. Background technique [0002] Gas-liquid dispersion is widely used in ventilation fermentation, biological aeration, gas-liquid reaction and gas-liquid-solid reaction and other processes. Engineers always expect to design a stirrer device that can fully disperse gas in liquid and save power consumption, and this idea has been realized with Rushton's design. [0003] In the 1950s, along with the large-scale production of penicillin, the flat-blade disc turbine impeller (also known as Rushton agitator) designed by American Rushton was widely used. This kind of agitator connects the disc to the stirring shaft by a hub, and several flat blades perpendicular to the disc are evenly distributed around the disc. The agitator is characterized by strong shearing action and good gas-liquid dispersion effect. [0004] Rushton mixers are po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/18B01F7/16B01F3/04
CPCB01J19/0066B01J19/18B01J2219/185B01F23/23B01F27/11B01F27/80
Inventor 郑志永孙东东詹晓北章文劼章金元高敏杰
Owner ZHENJIANG EAST BIOTECH EQUIP & TECH
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