阅读说明：本技术 一种纳米颗粒浆料分散设备 (Nanoparticle slurry dispersing equipment ) 是由 曾黎 刘培淳 刘坤 汪圣龙 于 2020-06-29 设计创作，主要内容包括：本发明属于浆料分散设备技术领域,尤其涉及一种纳米颗粒浆料分散设备,包括封闭式罐体、搅拌组件和超声组件,所述搅拌组件和所述超声组件均设置于所述封闭式罐体的内部,所述超声组件水平线的最高处低于所述搅拌组件水平线的最高处。本发明罐体设置为封闭式,在高剪切搅拌和分散后,可对罐体抽真空除泡,无需专门设置真空除泡工位和真空除泡设备,降低了生产成本,也减少了浆料的浪费。本发明将超声组件内置于封闭式罐体,可直接对罐体内部的纳米颗粒浆料分散,避免了超声波的损耗,提高了纳米颗粒浆料分散设备超声分散的效果。(The invention belongs to the technical field of slurry dispersing equipment, and particularly relates to nano-particle slurry dispersing equipment which comprises a closed tank body, a stirring assembly and an ultrasonic assembly, wherein the stirring assembly and the ultrasonic assembly are both arranged in the closed tank body, and the highest position of the horizontal line of the ultrasonic assembly is lower than the highest position of the horizontal line of the stirring assembly. The tank body is arranged in a closed type, and can be vacuumized and debubbled after high-shear stirring and dispersion, and a vacuum defoaming station and vacuum defoaming equipment are not required to be specially arranged, so that the production cost is reduced, and the waste of slurry is also reduced. According to the invention, the ultrasonic assembly is arranged in the closed tank body, so that the nano-particle slurry in the tank body can be directly dispersed, the loss of ultrasonic waves is avoided, and the ultrasonic dispersion effect of nano-particle slurry dispersion equipment is improved.)

1. The nanoparticle slurry dispersing equipment is characterized by comprising a closed tank body, a stirring assembly and an ultrasonic assembly, wherein the stirring assembly and the ultrasonic assembly are both arranged in the closed tank body, and the highest position of the horizontal line of the ultrasonic assembly is lower than the highest position of the horizontal line of the stirring assembly.

2. The nanoparticle slurry dispersing apparatus of claim 1, wherein the closed tank includes a tank body and a tank cover that are close-coupled, the agitation assembly being coupled to the tank cover.

3. The nanoparticle slurry dispersing apparatus according to claim 1, wherein the ultrasonic assembly is provided in a number, the number of ultrasonic assemblies is detachably embedded in the bottom surface and/or the side surface of the tank body, and the number of ultrasonic assemblies is matched with the size of the closed tank body.

4. The nanoparticle slurry dispersing apparatus of claim 1, wherein the agitator assembly comprises an agitator shaft and an agitator head fixedly connected to the agitator shaft.

5. The nanoparticle slurry dispersion apparatus of claim 1, wherein the closed tank is provided with a sandwich structure, and the closed tank is provided with an upper feed port and a lower feed port.

6. The nanoparticle slurry dispersing apparatus of claim 1, wherein the inner wall of the closed tank, the surface of the stirring assembly, and the surface of the ultrasonic assembly are coated with an anti-sticking layer.

7. The nanoparticle slurry dispersion apparatus of claim 1, wherein the inner wall and/or the tank bottom of the closed tank body is further provided with a plurality of turbulence elements.

8. The nanoparticle slurry dispersing apparatus according to claim 2, further comprising a suction opening provided on the tank cover.

9. The nanoparticle slurry dispersing apparatus of claim 3, wherein the ultrasonic frequencies of the several ultrasonic assemblies are the same or different.

Technical Field

The invention belongs to the technical field of slurry dispersing equipment, and particularly relates to nano particle slurry dispersing equipment.

Background

The preparation method of the nanoparticle slurry comprises the steps of adding nanoparticles into a solvent, and stirring and ultrasonically dispersing to form the nanoparticle slurry.

In the prior art, the preparation method of nanoparticle slurry generally comprises: placing the nano particles and the solvent in an open type mixing tank, moving the mixing tank to a stirring station, extending a stirring head into the mixing tank to perform high-shear mechanical stirring on the slurry, transferring the mixing tank to an ultrasonic dispersion station after the mechanical stirring is finished, and extending an ultrasonic probe into the mixing tank to perform ultrasonic dispersion; however, during the transfer of the mixing tank, a part of the slurry adheres to the stirring head, resulting in a waste of the slurry. In addition, after high-shear stirring and ultrasonic dispersion, a lot of bubbles are generated in the nanoparticle slurry, so that a vacuum bubble removal station and vacuum bubble removal equipment are required to be arranged behind the ultrasonic dispersion station, the production cost is increased, and in the process of transferring the mixing tank from the ultrasonic dispersion station to the vacuum bubble removal station, a part of slurry is adhered to an ultrasonic probe, so that the slurry waste is further increased.

In view of the above, it is necessary to provide a technical solution to the above technical problems.

Disclosure of Invention

The invention aims to: aiming at the defects of the prior art, the nano particle slurry dispersing equipment is provided, the functions of ultrasonic dispersion, high-speed mechanical stirring and vacuum defoaming can be realized simultaneously, and the waste of slurry is avoided.

In order to achieve the purpose, the invention adopts the following technical scheme:

a nanoparticle slurry dispersing device comprises a closed tank body, a stirring assembly and an ultrasonic assembly, wherein the stirring assembly and the ultrasonic assembly are both arranged inside the closed tank body, and the highest position of the horizontal line of the ultrasonic assembly is lower than the highest position of the horizontal line of the stirring assembly. Preferably, the ultrasonic assembly is built into the bottom and/or side of the closed tank.

It should be noted that the nanoparticle slurry dispersing apparatus of the present invention is suitable for medium and low viscosity nanoparticle slurry with viscosity not greater than 1000mPa · s, because when the ultrasonic assembly is started, if the viscosity of the slurry is too high, the ultrasonic wave cannot be rapidly propagated to each part of the slurry, so that the ultrasonic wave is concentrated at a certain position of the slurry, not only the ultrasonic dispersing effect cannot be achieved, but also the ultrasonic wave energy is excessively concentrated and released in a small area, and in a serious case, even the slurry is overheated and smokes.

Preferably, the device of the present invention can be used for dispersing fuel cell nano-scale catalyst slurry, and the catalyst of the fuel cell is mainly nano-scale platinum/carbon catalyst, so that the production cost is high, and therefore, the waste of the slurry further increases the production cost. Of course, the apparatus of the present invention is not limited to use only in the preparation of fuel cell nano-scale catalyst slurries.

As an improvement of the nanoparticle slurry dispersing apparatus of the present invention, the closed tank includes a tank body and a tank cover which are connected in a closed manner, and the stirring assembly is connected to the tank cover. Preferably, but can body and cover integrated into one piece, perhaps, can body and cover sealing connection can provide closed environment and be convenient for remove the bubble to the jar body evacuation. Further preferably, the stirring assembly is fixedly connected with the tank cover. The ultrasonic assembly is arranged on the bottom surface and/or the side surface of the closed tank body, because if the ultrasonic assembly is also connected with the tank cover, the sealing performance of the closed tank body is reduced from the mechanical angle, and the vacuum defoaming function can not be realized after stirring and ultrasonic treatment. In addition, the agitator disk of stirring subassembly sets up with jar body phase-match, and if the agitator disk of stirring subassembly sets up too big, the side of stirring subassembly does not have the position to hold the supersound subassembly. And if the ultrasonic assembly is set to be an eccentric structure, the ultrasonic dispersion effect is unstable, which is not beneficial to the dispersion of the nano particles.

As an improvement of the nanoparticle slurry dispersing device, the number of the ultrasonic assemblies is set to be a plurality, the plurality of the ultrasonic assemblies are respectively and detachably embedded into the bottom surface and/or the side surface of the tank body, and the number of the ultrasonic assemblies is matched with the size of the closed tank body. The ultrasonic assembly is embedded into the bottom and/or the side of the tank body, and the periphery of the ultrasonic assembly is sealed by a sealing ring. The ultrasonic assembly is arranged to be of a detachable structure, so that the damaged ultrasonic assembly can be replaced conveniently. The invention utilizes the propagation characteristic of the ultrasonic wave to realize the interference to the ultrasonic wave, and can be embodied as the reinforcement or the weakening of the ultrasonic wave. When the tank body is small, only one ultrasonic assembly is arranged to realize the dispersion of the slurry. Because the ultrasonic probe of ultrasonic component can not set up too big, the frequency of the ultrasonic wave that too big probe produced can reduce, can't reach the frequency range of ultrasonic wave, so when the jar body is great, ultrasonic component can set up to a plurality ofly, just can realize interfering or reinforcing to ultrasonic frequency.

As an improvement of the nanoparticle slurry dispersing apparatus of the present invention, the stirring assembly includes a stirring rod and a stirring head fixedly connected to the stirring rod. Wherein, the stirring head can set up to dispersion impeller or emulsification head, as long as can realize mechanical stirring can to do not do the restriction to the shape of dispersion impeller or emulsification head, the puddler can be by motor or other power component provide power.

As an improvement of the nanoparticle slurry dispersing apparatus of the present invention, the closed tank is provided with a sandwich structure, and the closed tank is provided with an upper feeding port and a lower discharging port. Because the ultrasonic assembly is arranged in the bottom surface and/or the side surface of the closed tank body, circulating cooling water can be introduced into the interlayer to take away heat generated by the vibration of the ultrasonic assembly, so that the temperature of the tank body is conveniently controlled. The nano-particle slurry is input from an upper feed inlet of the closed tank body, and is output from a lower discharge outlet after stirring, dispersing and defoaming. Furthermore, the upper feeding port and the lower discharging port are sealed, so that the tank body is prevented from being leaked gas and the vacuum defoaming can not be realized.

As an improvement of the nanoparticle slurry dispersing apparatus of the present invention, the inner wall of the closed tank, the surface of the stirring assembly and the surface of the ultrasonic assembly are coated with anti-sticking layers. The anti-sticking layer can prevent the adhesion of thick liquids, extravagant thick liquids.

As an improvement of the nanoparticle slurry dispersing device, a plurality of turbulence components are further arranged on the inner wall and/or the bottom of the closed tank body. The effect of vortex subassembly is that make thick liquids and vortex subassembly take place the striking, forms the fast-speed torrent, and it possesses extremely strong shearing force, is favorable to dispersing the nanoparticle in the thick liquids, prevents the reunion of nanometer thick liquids for thick liquids mix more evenly.

As an improvement of the nanoparticle slurry dispersing apparatus, the apparatus further comprises an air exhaust opening formed in the tank cover. The air pumping holes are used for vacuumizing the slurry after mechanical stirring and ultrasonic dispersion so as to remove air bubbles in the slurry.

As an improvement of the nanoparticle slurry dispersing device, the ultrasonic frequencies of the ultrasonic components are the same or different. When the frequencies of the ultrasonic components are the same, the wave crests and the wave troughs of the formed ultrasonic waves are consistent in fluctuation, so that the peak values of the wave crests can be enhanced, and the ultrasonic wave enhancement effect is achieved; when the frequencies of the ultrasonic components are staggered, the wave crests of the second ultrasonic component are superposed at the wave trough position of the first ultrasonic component, so that the interference effect on ultrasonic waves is achieved, and the dispersion effect on the nano-particle slurry is enhanced.

As an improvement of the nanoparticle slurry dispersing device, the ultrasonic frequency of the ultrasonic component is less than or equal to 20 KHz. When the ultrasonic frequency is lower, the vibration of the nano particles is facilitated, and the dispersion effect on the particles is stronger; when the ultrasonic frequency is too high, the dispersion of the nano particles is not facilitated.

As an improvement of the nanoparticle slurry dispersing apparatus of the present invention, the stirring assembly and the ultrasonic assembly may be operated simultaneously or intermittently.

Compared with the prior art, the beneficial effects of the invention include but are not limited to:

1) the tank body is arranged in a closed type, and can be vacuumized and debubbled after high-shear stirring and dispersion, and a vacuum defoaming station and vacuum defoaming equipment are not required to be specially arranged, so that the production cost is reduced, and the waste of slurry is also reduced.

2) In the prior art, the ultrasonic assembly is clamped on the side surface outside the closed tank body, the ultrasonic assembly needs to vibrate the tank body firstly, the ultrasonic dispersion effect on the nano-particle slurry inside the tank body can be further generated, and the ultrasonic wave can be partially lost. The ultrasonic assembly is arranged in the closed tank body, so that the nano-particle slurry in the tank body can be directly dispersed, and the ultrasonic dispersion effect of the nano-particle slurry dispersing equipment is improved.

3) The highest position of the horizontal line of the ultrasonic assembly is lower than the highest position of the horizontal line of the stirring assembly, so that the stirring assembly is prevented from impacting the ultrasonic assembly when in work, and the stirring assembly is used for stirring the slurry and then performing ultrasonic dispersion, so that the dispersion effect of the slurry can be further improved.

Drawings

Fig. 1 is a schematic structural view of a nanoparticle slurry dispersing apparatus in example 1.

Fig. 2 is a schematic structural view of a nanoparticle slurry dispersing apparatus in example 2.

Fig. 3 is a schematic structural view of a nanoparticle slurry dispersing apparatus in example 3.

In the figure: 1-tank body, 11-tank body, 12-tank cover, 121-pumping hole, 2-stirring component, 21-stirring rod, 22-stirring head, 3-ultrasonic component, 4-turbulence component, 5-interlayer, 61-upper feeding hole and 62-lower discharging hole.

Detailed Description

In order to make the technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to specific embodiments and drawings in the specification, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As used in this specification and the appended claims, certain terms are used to refer to particular components, and it will be appreciated by those skilled in the art that a manufacturer may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", horizontal ", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.