CN1249205A

CN1249205A - Chaos mixer

Info

Publication number: CN1249205A
Application number: CN 98118268
Authority: CN
Inventors: 王林翔; 陈鹰; 范毓润; 路甬祥
Original assignee: Zhejiang University ZJU
Current assignee: Zhejiang University ZJU
Priority date: 1998-09-30
Filing date: 1998-09-30
Publication date: 2000-04-05

Abstract

A chaos mixer used for mixing fluid is a spiral torsion pipe that is composed of several curved arc tubes connected sequentially. The two planes where adjacent arc tubes are positioned are perpendicular to each other. When the fluid to be mixed flows through each arc tube, it is stirred by eddy pair with periodically changed direction, generating complex chaos phenomenon to quickly stretch and fold the fluid, so the fluid is continuously mixed without cutting. Its advantages are simple structure, less energy consumption, high mixing effect even if the fluid has higher viscosity, and no influence on the properties of mixture.

Description

Chaos mixer

The present invention is used for device that fluid is mixed.

At present, there are two kinds at the flow mixer of using, a kind of is to stir slot type, utilize paddle that fluid to be mixed is mixed, another kind is a static mixer, use device is at the many plate washers or the blade of internal mixer, the fluid of the blender of flowing through carried out cut apart by force, forms strong turbulent flow and reaches the mixing purpose.Because above-mentioned blender is directly to cut by paddle or plate washer, blade convection cell, thus can make the character of fluid to be mixed that unfavorable variation takes place, even the molecular structure of some polymer is changed.The tank diameter blender only is applicable to the off-line condition of production, can not produce continuously, though static mixer can carry out continuous fluid married operation, will force fluid to be in the turbulent flow state in the mixed process, so energy consumption is bigger.

It is little to the purpose of this invention is to provide a kind of energy consumption, do not have to shear, and does not influence mixture character, is suitable for the continuous married operation of fluid, mixed high-efficient, chaos mixer simple in structure.

Chaos mixer provided by the invention is to continue the torsion tube with import and outlet that is formed by connecting by several circular arc bend pipes by the mode that adjacent bend pipe two planes of living in are mutually the right angle.During work, fluid to be mixed is forced into chaos mixer, because action of centrifugal force, fluid to be mixed secondary flow will occur in first section bend pipe flows, on the bend pipe cross section, form the eddy current of a pair of symmetry, make the fluid of inflow on the cross section of blender, have pair flow phenomenon to take place, produce the effect of similar stirring.When fluid to be mixed enters second section bend pipe, can be subjected to the stirring action of this a pair of vortex pair equally, but because the two neighboring sections bend pipe has reversed 90 degree, make the mixing direction of eddy current also rotate 90 degree this moment.When fluid is flowed through each section bend pipe of chaos mixer successively, it in fact just has been subjected to a pair of stirring action that changes the vortex pair of direction by some cycles, when this periodic vortex pair makes fluid to be mixed flow through chaos mixer, produce complicated chaos phenomenon, make fluid wherein be subjected to stretching rapidly and folding, thereby realize not having continuously, efficiently the cutting married operation.

Owing to do not have plate washer, blade convection cell to carry out direct machine cuts in the chaos mixer of the present invention, so character that can convection cell itself in mixed process exerts an influence, simultaneously, it only has the linear loss of bend pipe in flowing, so energy consumption is very little, because chaos mixer just is made up of simple bend pipe, fluid motion is in laminar condition, even the viscosity of fluid to be mixed is bigger, under less Reynolds number, also can produce the stirring action of secondary stream, realize efficiently mixing.

Below in conjunction with accompanying drawing the present invention is further described.

Fig. 1 is that the present invention constitutes schematic diagram;

Fig. 2 is a kind of example of the present invention;

Figure 1 shows that the torsion tube that constitutes by two circular arc bend pipes that circular arc bend pipe 1 that two planes of living in are mutually the right angle links to each other with bend pipe 2 and forms.Continuity connects in this way, can obtain the chaos mixer that formed by several circular arc bend pipes, as shown in Figure 2, be the chaos mixer that is made of 4 circular arc bend pipes promptly, 3 are import among the figure, and 4 are outlet, in this example, each bend pipe utilizes flange 5 to link to each other, and perhaps also can adopt to be threaded.Usually, be the stirring action of vortex pair in the reinforced pipe, the circular arc bend pipe is made semicircle bend pipe, its bending radius is 10～20 times of bend pipe section radius.

Claims

1. chaos mixer is characterized in that it is to continue the torsion tube with import and outlet that is formed by connecting by several circular arc bend pipes by the mode that adjacent bend pipe two planes of living in are mutually the right angle.

2. by the described chaos mixer of claim 1, it is characterized in that said circular arc bend pipe is semicircle bend pipe, its bending radius is 10～20 times of bend pipe section radius.