WO2012000351A1

WO2012000351A1 - Ultrasonic mixing equipment

Info

Publication number: WO2012000351A1
Application number: PCT/CN2011/074111
Authority: WO
Inventors: 史杨; 索琦; 邱新平
Original assignee: 北京翔奥天竺科技有限公司
Priority date: 2010-06-28
Filing date: 2011-05-16
Publication date: 2012-01-05
Also published as: CN102294192A

Abstract

An ultrasonic mixing equipment comprising a barrel (1), a pump (2) and an ultrasonic generator (3) is disclosed, wherein the inlet of the pump (2) is connected with the barrel (1), the outlet of the pump (2) is connected with the inlet of the ultrasonic generator (3), the outlet of the ultrasonic generator (3) is connected with the barrel (1), and the ultrasonic generator (3) is a hydrokinetic ultrasonic generator. The ultrasonic mixing equipment uses ultrasonic wave produced by the ultrasonic generator (3) to disperse and mix solid-liquid or liquid-liquid materials. Moreover, the equipment makes use of the fluid to be dispersed and mixed as power source so that it has low energy consumption and is suitable for large scale industrial production.

Description

Ultrasonic mixing device

Technical field

The present invention relates to a mixing device, and more particularly to an ultrasonic mixing device for dispersing and mixing solid-liquid, liquid-liquid materials by ultrasonic waves. Background technique

Many physical processes and chemical processes in industrial manufacturing are subject to the uniformity of material dispersion and mixing. Conventional solid-liquid, liquid-liquid materials are generally mixed by mechanical agitation. With the in-depth study of the agitation mechanism, mixers of various agitating blades and agitating forms are constantly appearing, and the effect of material mixing is getting better and better. However, mechanical agitation has significant limitations, especially in the dispersion mixing of nanoscale ultrafine agglomerates. For example, in the lithium-ion battery industry, the commonly used dual planetary agitator is used in the preparation of high-viscosity battery slurries, even after continuous stirring for up to ten hours (or even longer), observed under an electron microscope, the material is dispersed and mixed. The microscopic effect is still unsatisfactory. The uniformity of the slurry directly affects the important indexes such as capacity, cycle, internal resistance and rate characteristics of the lithium ion battery. Therefore, research on new material mixing mechanisms and development of more efficient mixing processes, such as ultrasonic mixing, are widely carried out worldwide.

The use of ultrasonic "cavitation" to improve the mixing effect of materials has been receiving widespread attention. The basic principle is: When the ultrasonic energy is high enough, when the material flows through the ultrasonic region, an "ultrasonic cavitation" phenomenon occurs, and a micro-jet with a strong impact force is generated. Under the action of high-energy ultrasound, the agglomerated material is fully dispersed, and the "cavitation" weakens the "Coulomb force" between the nano-sized particles, making it difficult for the dispersed ultrafine particles to reagglomerate. The most common ones are electric ultrasonic devices, which are affected by energy consumption. It is difficult to produce sufficiently strong sound energy, and only a small amount of material can be mixed. It is not currently applicable to large-scale industrial production. Summary of the invention

The technical problem to be solved by the present invention is that the existing ultrasonic mixing device has high energy consumption and is difficult to apply to large-scale industrial production.

In order to solve the above technical problems, the present invention provides an ultrasonic mixing device including a cartridge, a pump, and an ultrasonic sounder, and an inlet of the pump and an outlet of the ultrasonic sounder are connected to the cartridge. The outlet of the pump is connected to the inlet of the ultrasonic sound generator, wherein the ultrasonic sound generator is a hydrodynamic ultrasonic sound generator.

According to the above technical solution of the present invention, the solid-liquid and liquid-liquid materials are dispersed and mixed by the ultrasonic waves generated by the flow dynamic ultrasonic sound generator. Since the hydrodynamic ultrasonic sounder uses the fluid as a power source to excite the sounding member (for example, the reed) in the hydrodynamic ultrasonic sound generator, the resonance occurs when the jet eigenfrequency of the fluid medium coincides with the natural vibration frequency of the reed. And send out ultrasonic waves. Therefore, hydrodynamic ultrasonic waves use the fluid (solid-liquid, liquid-liquid) to be dispersed and mixed as a power source without the need for additional electrical equipment such as an electric ultrasonic device, so that the energy consumption is low and it is suitable for large-scale industrial production.

Other features and advantages of the invention will be described in detail in the detailed description which follows. DRAWINGS

The drawings are intended to provide a further understanding of the invention and are intended to be a In the drawing:

1 is a schematic structural view of an embodiment of an ultrasonic mixing device according to the present invention; FIG. 2 is a schematic structural view of another embodiment of an ultrasonic mixing device according to the present invention; and FIG. 3 is an ultrasonic mixing device according to the present invention. A schematic structural view of still another embodiment. detailed description

The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are intended to be illustrative and not restrictive.

As shown in FIG. 1, an ultrasonic mixing device according to an embodiment of the present invention includes a cartridge 1, a pump 2, and an ultrasonic sounder 3. The inlet of the pump 2 is connected to the cartridge 1, the pump 2 The outlet is connected to the inlet of the ultrasonic sound generator 3, and the outlet of the ultrasonic sound generator 3 is connected to the cartridge 1, wherein the ultrasonic sound generator 3 is a hydrodynamic ultrasonic sound generator.

The hydrodynamic ultrasonic sound generator may employ various suitable structures, for example, a commercially available hydrodynamic ultrasonic sound generator known in the art may be employed, and the structure will not be described in detail herein.

The inlet of the pump 2 and the outlet of the ultrasonic sound generator 3 can be connected to the cartridge 1 by various suitable means. For example, in an embodiment as shown in FIG. 1, the inlet of the pump 2 and/or the outlet of the ultrasonic sounder 3 are connected to the cartridge 1 by a pipe, and to the cartridge 1 The inner chamber 11 is in communication. The pipe may be a hard pipe or a hose connected to the drum 1 by means of a flange or a quick joint or the like. The inlet of the pump 2 and the outlet of the ultrasonic sound generator 3 may be connected at any suitable position of the cartridge 1, as shown in Fig. 1, the inlet of the pump 2 is connected to the bottom of the cylinder 1 by a pipe The outlet of the ultrasonic sounder 3 is connected to the barrel 1 On the side wall, of course, the two connection positions are interchangeable, and may be connected to the side wall or the bottom of the barrel 1, or may be connected to other parts of the barrel 1, such as the top cover. Alternatively, for example, in another embodiment as shown in Fig. 2, the inlet of the pump 2 and/or the outlet of the ultrasonic sounder 3 extend through the conduit into the interior 11 of the cartridge 1. That is, the inlet of the pump 2 and/or the outlet of the ultrasonic sound generator 3 are connected to the cartridge 1 by a self-priming connection. Although the specific connection manners of the two embodiments shown in FIG. 1 and FIG. 2 are different, the suction of the pump 2 is used to cause the material in the cartridge 1 to pass through the ultrasonic sounder 3 and return to the cartridge 1 through the suction. The cycle allows the material to be uniformly dispersed and mixed. Of course, the above two specific connection methods can also be combined, for example, one of the inlet of the pump 2 and the outlet of the ultrasonic sound generator 3 is physically connected to the cartridge 1 through a pipe, and the other is Extending into the interior 1 of the cartridge 1 through a pipe.

Preferably, the ultrasonic mixing device may further include a filtering device (not shown) connected between the cartridge 1 and the inlet of the pump 2. Thereby, the material from the barrel 1 can be initially filtered before entering the pump 2 and the subsequent ultrasonic sounder 3, so as to prevent too much particles from clogging the corresponding pipeline, causing the ultrasonic mixing device to malfunction.

Preferably, the ultrasonic mixing device may further include a flow ejection device (not shown) connected between the cartridge 1 and the inlet of the pump 2. Therefore, the material from the barrel 1 can be pre-dispersed and mixed by the liquid ejecting device, and then further transferred into the ultrasonic sound generator 3 for further dispersion mixing, thereby achieving better dispersion mixing effect. The liquid ejecting apparatus may employ various appropriate structures, for example, a commercially available liquid ejecting apparatus known in the art may be employed, and the structure will not be described in detail herein.

Preferably, the ultrasonic mixing device may further comprise a mechanical agitation device disposed on the cartridge 1. That is, the material in the barrel 1 is pre-dispersed and mixed by the mechanical stirring device, so that the material reaches a macroscopic uniformity, no obvious dry powder particles exist, and has certain fluidity. Then, it is further introduced into the subsequent ultrasonic generator 3 and/or the liquid jet device for further dispersion mixing, so that the material reaches the nano-scale dispersion mixing effect. This allows for higher mixing efficiency. Of course, as shown in Figure 1, The mechanical agitation means may be provided separately, rather than in combination with the ultrasonic mixing device of the present invention. The mechanical agitation device can be implemented in a variety of specific configurations. For example, as shown in FIGS. 2 and 3, the mechanical stirring device may include a stirring paddle 4 and/or a dispersing paddle 5, which is mounted on the top cover 12 of the cartridge 1 and/or Extending into the inner cavity 11 of the cartridge 1. The mechanical agitation device may include one or both of the agitating paddle 4 and the dispersing paddle 5. The agitating paddle 4 and the dispersing paddle 5 may each be one or more. The paddles of the agitating paddle 4 and the dispersing paddle 5 can adopt various structures, such as a claw type, an anchor type, a frame type, a serrated ring type, a Bruma gold type, an impeller type, a blade combination type, a turbine type , ribbon, wing flow, push and axial flow. For example, in the embodiment shown in Fig. 2, only the agitating slurry 4 is used, and the paddle of the agitating paddle 4 is an anchor blade; in the embodiment shown in Fig. 3, the agitating paddle 4 is two, and the paddle of the agitating paddle 4 is agitated. For the claw blade, the blade of the dispersion paddle 5 is a single-axis double-sawtooth ring blade.

Preferably, the agitating paddle 4 and/or the dispersing paddle 5 are capable of rotating about their own axis, thereby increasing the agitation effect. When having a plurality of agitating paddles 4 and/or dispersing paddles 5, the direction of rotation of the agitating paddles 4 and/or the dispersing paddles 5 may be set to be the same or different depending on specific needs. For example, in the embodiment shown in Figure 3, the rotation of the two agitating slurries 4 is reversed in the opposite direction.

More preferably, as shown in FIG. 3, the top cover 12 of the cartridge 1 is provided with a male turntable 13 rotatable about a central axis of the top cover 12, and the stirring paddle 4 and/or the dispersing paddle 5 are mounted. On the male turntable 13. Thereby, the agitating paddle 4 and/or the dispersing paddle 5 revolve along with the male turntable 13 while rotating, thereby further improving the stirring effect.

More preferably, as shown in FIG. 3, the mechanical stirring device further includes a squeegee 6 mounted on the male turntable 13 and extending into the inner cavity 11 of the cartridge 1, and The edge of the squeegee 6 can come into contact with the inner peripheral wall of the cartridge 1. Thus, as the male turntable 13 rotates, the edge of the squeegee 6 moves along the inner peripheral wall of the cartridge 1, and the material adhered to the inner peripheral wall of the cartridge 1 is scraped off during the movement. In order to prevent the formation of an adhesion layer on the inner peripheral wall of the cylinder 1, the stirring effect is further improved. Preferably, the cartridge 1 and/or the pump 2 have a cooling water jacket. Therefore, it is prevented that the product performance index is affected by the excessive temperature of the slurry.

The pump 2 can be implemented using a variety of suitable types of pumps, such as a rotor pump, a gear pump, a screw pump, and the like.

It should be noted that each of the specific technical features described in the above specific embodiments may be combined in any suitable manner, and it is also within the scope of the present disclosure. In addition, any combination of various embodiments of the present invention may be made as long as it does not deviate from the idea of the present invention, and it should be regarded as the disclosure of the present invention.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments, and various simple modifications of the technical solutions of the present invention may be made within the scope of the technical idea of the present invention. These simple variations are within the scope of the invention. For example, in the above embodiment and related drawings, only one ultrasonic generator 3 is shown, but the ultrasonic mixing device of the present invention can obviously be equipped with a plurality of ultrasonic generators, that is, equipped with a plurality of circulation loops, thereby further improving material dispersion. Mixing effects, or / and expanding the processing scale of the ultrasonic mixing device.

Claims

Rights request

An ultrasonic mixing device comprising a cartridge (1), a pump (2) and an ultrasonic sounder (3), the inlet of the pump (2) being connected to the cartridge (1), An outlet of the pump (2) is connected to an inlet of the ultrasonic sound generator (3), and an outlet of the ultrasonic sound generator (3) is connected to the cartridge (1), characterized in that the ultrasonic sound generator ( 3) A hydrodynamic ultrasonic sounder.

2. Ultrasonic mixing device according to claim 1, characterized in that the inlet of the pump (2) and/or the outlet of the ultrasonic sound generator (3) are connected to the cartridge (1) by a pipe And communicating with the inner cavity (11) of the barrel (1).

3. Ultrasonic mixing device according to claim 1, characterized in that the inlet of the pump (2) and/or the outlet of the ultrasonic sounder (3) extend through the pipe into the barrel (1) Inner cavity (11).

4. Ultrasonic mixing device according to claim 1, characterized in that the ultrasonic mixing device further comprises a filtering device connected between the cartridge (1) and the inlet of the pump (2).

The ultrasonic mixing device according to claim 1, characterized in that the ultrasonic mixing device further comprises a liquid flow ejecting device connected between the cartridge (1) and the inlet of the pump (2).

6. Ultrasonic mixing device according to claim 1, characterized in that the ultrasonic mixing device further comprises a mechanical stirring device arranged on the cartridge (1).

7. Ultrasonic mixing device according to claim 6, characterized in that the mechanical stirring device comprises a stirring paddle (4) and/or a dispersing paddle (5), the agitating paddle (4) and/or a dispersing paddle (5) ) mounted on the top cover (12) of the cartridge (1) and into the inner cavity (11) of the cartridge (1).

8. Ultrasonic mixing device according to claim 7, characterized in that the stirring paddle (4) and/or the dispersing paddle (5) are able to rotate about their own axis.

9. Ultrasonic mixing device according to claim 7 or 8, characterized in that the top cover (12) of the cartridge (1) is provided with a common rotatable about the central axis of the top cover (12) A turntable (13), the stirring paddle (4) and/or the dispersing paddle (5) are mounted on the male turntable (13).

10. The ultrasonic mixing device according to claim 9, wherein the mechanical stirring device further comprises a squeegee (6), the squeegee (6) is mounted on the male turntable (13) and extends The inner cavity (11) of the cartridge (1), and the edge of the squeegee (6) is capable of coming into contact with the inner peripheral wall of the cartridge (1).