A lapping homogenizer working head and lapping homogenizer

Abstract

The application discloses a grinding homogenizer working head and a grinding homogenizer. The grinding homogenizer working head comprises a homogenizer stator and a homogenizer rotor. The homogenizer stator comprises a stator plate and a stator rod fixed on the stator plate. The rotor comprises a rotor plate and a rotor rod fixed on the rotor plate. Threaded or screw-like protrusions for processing materials are arranged on the outer side of the stator rod and / or the outer side of the rotor rod. The rotor rod is parallel to the stator rod, and the minimum distance between the rotor rod and the stator rod is 0.5-5 mm. The homogenizer provided by the application greatly improves the production capacity, has lower requirements on the particle size and concentration of raw materials, has smaller energy consumption, is not easy to introduce metal powder, has lower requirements on the machining precision of the equipment, and has very low production and maintenance costs, thereby achieving very good comprehensive effects.

Description

TECHNICAL FIELD

[0001] The application relates to a homogenizer working head and a grinding homogenizer and belongs to the field of superfine particle processing machinery. BACKGROUND

[0002] The grinding homogenizer, referred to as a homogenizer, is used for superfine particle crushing and homogenizing processing of fillers in non-metallic minerals such as graphite, montmorillonite and coal, building materials, chemical raw materials, paints and coatings, and can also be used for tissue dispersion in the biotechnology field, sample preparation in the pharmaceutical field, enzyme treatment in the food industry and the like.

[0003] The working principle of the homogenizer is that the homogenizer rotor (referred to as a rotor) and the homogenizer stator (referred to as a stator) work in cooperation. The rotor and the stator are driven to rotate at a high speed by a motor through a belt drive. The processed material is subjected to downward spiral impact force by its own weight or external pressure (which can be generated by a pump). When passing through the gap between the rotor and the stator, the material is subjected to strong shearing force, friction force and high-frequency vibration, so that the material is effectively emulsified, dispersed and crushed, and the effect of superfine crushing and emulsification of the material is achieved.

[0004] The rotor and the stator of the homogenizer cooperate with each other and act on the material to be processed when rotating, so as to emulsify, disperse and crush the material. Generally, the rotor and the stator are designed to be toothed, so they are also referred to as rotor teeth and stator teeth. The side surfaces of the rotor teeth and the stator teeth are generally smooth, and the gap between the rotor teeth and the stator teeth is basically constant and is generally designed to be very small.

[0005] In order to achieve the ideal emulsification, dispersion and crushing effect, the distance between the rotor and the stator must be adjusted to a small gap (generally less than 0.1 mm), which limits the grinding range of the initial particle size of the grinding medium. For example, the initial particle cannot be too large, such as the requirement of fineness less than 200 mesh, or even finer.

[0006] The homogenizer mainly relies on the medium to generate strong shearing force and friction force between the stator and the rotor to grind the medium. This requires the rotor of the homogenizer to rotate at a high speed (about 10000 r / min) and have sufficient driving force to support, that is, a large power motor is required to drive the grinding homogenizer, so the energy consumption is also relatively large.

[0007] The distance between the rotor and the stator is adjusted to a small gap, which also requires a low concentration of the grinding medium. Otherwise, the mixture of the grinding medium cannot pass through the rotor and the stator and is forced to stop. Therefore, the production capacity of such a homogenizer is too low.

[0008] The rotor, the medium and the stator are easily worn in the high-strength friction process of the rotor, the medium and the stator in the high-speed running state of the rotor, and the rotor and the stator are expensive, thereby increasing the maintenance cost. In addition, the content of metal powder is increased in the final product of the grinding homogenization, and sometimes the product metal exceeds the standard, which limits the application of the conventional grinding machine to the fields of high-standard food, medicine and chemical industry.

[0009] The temperature generated instantaneously when the medium flows between the rotor and the stator is very high in the high-speed running state of the rotor, which limits the application range of the conventional homogenizer, for example, the micro-particle products which are not resistant to high temperature cannot adopt the homogenizer. SUMMARY

[0010] The technical problem solved by the present application is that the existing homogenizer has low production capacity, high requirements for the particle size and concentration of raw materials, high energy consumption, easy introduction of metal debris and high processing precision requirement of the grinding machine.

[0011] To solve one or more of the above technical problems, the present application provides a grinding homogenizer working head, which comprises a homogenizer stator and a homogenizer rotor, the homogenizer stator comprises a stator plate and a stator rod, the stator rod is fixed on the stator plate; the rotor comprises a rotor plate and a rotor rod, the rotor rod is fixed on the rotor plate, a thread-like or thread-like convex is arranged on the outer side of the stator rod and / or the outer side of the rotor rod for processing materials, the rotor rod and the stator rod are parallel to each other, and the minimum distance between the rotor rod and the stator rod is 0.5-5mm.

[0012] In some embodiments, the stator rod is detachably mounted on the stator plate, and / or the rotor rod is detachably mounted on the rotor plate.

[0013] In some embodiments, the stator rod is fixed on the stator plate by threads; and / or the rotor rod is fixed on the rotor plate by threads.

[0014] In some embodiments, the outer side of the stator rod is provided with 10-100 turns of screw turns; and / or the outer side of the rotor rod is provided with 10-100 turns of screw turns.

[0015] In some embodiments, the length of the stator rod is 10-1000mm; and / or the length of the rotor rod is 10-1000mm.

[0016] In some embodiments, the convexes on the stator rod and the rotor rod are all threads, and the screw rotation directions of the threads on the stator rod and the threads on the rotor rod are opposite.

[0017] In some embodiments, a plurality of the stator rods form at least one stator ring on the stator plate, and a plurality of the rotor rods form at least one rotor ring on the rotor plate, and the centers of the stator rings and the rotor rings coincide in the working head of the grinding homogenizer.

[0018] In some embodiments, the number of the stator rings is more than two, and the centers of each of the stator rings coincide; the number of the rotor rings is more than two, and the centers of each of the rotor rings coincide.

[0019] In some embodiments, in the working head of the homogenizer, each of the stator rings and each of the rotor rings are arranged alternately.

[0020] In some embodiments, the working head of the homogenizer further comprises a cylindrical shell, the top surface of the shell is provided with a top plate, the bottom surface is the stator plate, the side surface is a cylindrical side plate, the rotor rods, the stator rods and the rotor plate are located in the shell; the cylindrical side plate is provided with through holes for feeding.

[0021] Based on the same inventive concept, the application further provides a grinding homogenizer comprising the working head of the grinding homogenizer as described in any one of the above.

[0022] In some embodiments, a bearing seat is installed on the stator plate of the working head of the homogenizer, and the rotating shaft is further connected with the bearing seat on the stator plate.

[0023] In some embodiments, a blade is installed on the rotating shaft, and the blade is located in the working head of the homogenizer.

[0024] The stator of the homogenizer in the application is referred to as a stator, and the rotor of the homogenizer is referred to as a rotor. The structure of the stator and the rotor in the application can be the same or interchangeable. When connected with the rotating shaft, it is a rotor. Therefore, the structural design on the stator is also applicable to the rotor.

[0025] It can be understood that the thread-like protrusions on the outer side surfaces of the stator rods and the rotor rods, when rotating, are like countless blades cutting the material, and the homogenization effect on the material is improved by hundreds or thousands of times.

[0026] It can be understood that the shape of the protrusions for processing the sample can be similar to the thread, and the cutting effect similar to the thread can be achieved, such as setting the turns of the thread into mutually parallel circles.

[0027] According to the above concept, the side surface of the rotor should have more cutting surfaces, and there can be other shapes of protrusions, such as sawtooth shapes, which can be generally considered as thread-like protrusions or equivalent to thread-like protrusions.

[0028] It can be understood that the shape of the thread or thread-like protrusions on the stator rod or the rotor rod is not limited, for example, in terms of thread cross-sectional shape, can be divided into triangular thread, rectangular thread, trapezoidal thread and zigzag thread, etc.

[0029] More preferably, the protrusions on the outer side of the stator rod and the rotor rod are threads. When the protrusions on the outer side of the stator rod and the rotor rod are threads, most preferably, i.e., the stator rod and the rotor rod are both screw rods. At this time, the helical rotation of the threads on the stator rod and the threads on the rotor rod can be set in opposite directions, i.e., one helix upward and one helix downward (i.e., one left-handed thread and the other right-handed thread), so that the sample moves relatively under the driving of the rotor to improve the grinding homogenization effect.

[0030] In the adjacent rotor ring and stator ring of the present application, the rotor rod and the stator rod are generally cylindrical and have protrusions on the surface, so the distance between the rotor rod and the stator rod is not a fixed value, and the minimum distance between the rotor rod and the stator rod is controlled to be 0.5-5mm; optionally, the minimum distance is 0.5-3mm, which can be 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.2mm, 1.5mm, 2.0mm, 3.0mm or any range thereof, such as 0.8-1.2mm, 1.5-3.0mm. In the prior art, the distance between the stator teeth and the rotor teeth is generally a fixed value, and the finer the material to be prepared, the smaller the distance; if ultra-fine material (such as microns below 100 microns, even 1-10 microns) is needed, the distance between the stator teeth and the rotor teeth is less than 0.1mm.

[0031] In the same circle of stator rings, the stator rods are spaced apart, and according to the need, the radius of the cylindrical stator ring can be large or small, and the number of circles can be more or less. For example, in a circle of stator rings, the number of stators is 6-20, preferably 8-15. The same applies to the distribution of the rotor.

[0032] The length of the stator rod and / or the rotor rod of the present application is generally 20-500mm, and some can be longer, up to 1m, which is calculated based on the length of the protruding stator plate or rotor plate. The diameter of the stator ring or the rotor ring is 0.1m-1m.

[0033] The stator rod and the rotor rod of the present application can be directly used with screws, which can be M2-M60 screws, and the radius can even be larger; the length can be 0.01m-1m or even longer. The stator rods and the stator rods are spaced apart; preferably, the distance between the stator rods is 1-5mm; the distance between the rotor rods is 1-5mm.

[0034] In each stator bar or rotor bar, the outer side is required to have a number of turns of helical turns, generally more than five turns, such as 5-200 turns, preferably 10-100 turns.

[0035] On the stator plate and the rotor plate, mounting holes are provided for fixing the stator bars and the rotor bars. The distance (minimum distance) between adjacent mounting holes is 0.5-50mm, such as 2mm, 5mm, 8mm, 10mm, 15mm, 20mm, 30mm, 40mm, 50mm. That is, the distance between stator bars is kept at 0.5-50mm; the distance between rotor bars is kept at 0.5-50mm, such as 2mm, 5mm, 8mm, 10mm, 15mm, 20mm, 30mm, 40mm, 50mm.

[0036] In a preferred embodiment, the stator bars are detachably mounted on the stator plate, and / or the rotor bars are detachably mounted on the rotor plate. Due to the detachable design, it is very different from the fixing method of the teeth in the prior art. In the prior art, the teeth are processed based on a whole structure, and the precision of mechanical processing is very high. However, the detachable design of the present application can be very convenient for processing, installation and maintenance, and the cost is very low.

[0037] The stator bars are mounted on the stator plate, and if the stator bars are damaged, they can be removed and replaced at any time. However, the prior art needs to replace the entire stator.

[0038] In the detachable connection method, the simplest one is threaded connection, because the end of the stator bar and the rotor bar is also provided with a thread, and a screw hole is provided on the stator plate and the rotor plate, and the stator bar and the rotor bar can be connected through the thread. In order to further fix the stator bar and the rotor bar, a nut can be used to fix the other side of the stator plate and the rotor plate.

[0039] The structure of the stator bar and the rotor bar of the present application is relatively simple, which is a screw rod. A screw hole is provided on the stator plate, and the bottom of the screw rod is fixed on the stator plate, and further fixed by a nut. The rotor bar is also fixed on the rotor plate in a similar way.

[0040] The stator rings and the rotor rings of the homogenizer working head are arranged alternately. The number of turns of the rotor ring can be the same as that of the cylindrical stator ring, or different, generally different by 1 turn. The number of turns of the rotor ring and the number of turns of the stator ring are 1-9 turns, preferably 2-5 turns.

[0041] In order to enable the stator ring and the stator ring to be embedded and installed with the rotor ring, the distance between adjacent stator rings is greater than the diameter of the rotor bar, generally 0.1-5mm larger than the diameter of the rotor bar. Similarly, the distance between adjacent rotor rings is greater than the diameter of the stator bar, generally 0.1-5mm larger than the diameter of the stator bar.

[0042] The homogenizer of the present application comprises a driving mechanism, a rotating shaft and the homogenizer head. A transmission mechanism, such as a belt pulley, can be arranged between the driving mechanism and the rotating shaft for transmission, and the rotating speed ratio can be changed through the transmission mechanism to increase the rotating speed of the rotating shaft.

[0043] The bearing seat is arranged on the stator plate of the homogenizer head, and the rotating shaft is further connected with the bearing seat on the stator plate. The connection between the rotating shaft and the stator plate can further fix the homogenizer head and improve the stability during grinding. The blade is arranged on the rotating shaft and located in the homogenizer head. The rotation of the blade can generate negative pressure to suck the material to be processed.

[0044] The homogenizer of the present application comprises a fixed plate and connecting rods. The fixed plate can fix the driving mechanism (such as a motor). The homogenizer head can be fixed on the fixed plate through the connecting rods (generally two or more, preferably 3-4). The driving mechanism is fixed on the fixed plate, and the homogenizer can be fixed on a machine frame or a lifting machine through the fixed plate, so as to conveniently adjust the height of the homogenizer head. The connecting rods fix the homogenizer head on the fixed plate to improve the stability during working.

[0045] The homogenizer of the present application utilizes the optimized structure of the homogenizer head, especially the design of the stator and the rotor, to make the particle materials in the fluid break to the required particle size through physical kinetic energy such as mutual collision, tearing, shearing and cavitation erosion, instead of relying on strong friction force to break the solid particles. The breaking efficiency of the homogenizer of the present application on solid particles and other materials is greatly improved.

[0046] In the prior art, the stator and the rotor in the homogenizer head are provided with ring-shaped toothed structures, and the side surface is a plane. The present application utilizes the cooperation of multiple stators and rotors for processing, and utilizes the stators and rotors with threaded or screw thread-like protrusions on the side surface for working, so that the working surface is greatly increased, and the homogenization efficiency is obviously improved. The contact between the ground particles and the rotor rods and the stator rods is mainly point and line contact, and the shearing force between the stator rods and the rotor rods is greater than the friction force.

[0047] Generally, the finer the material to be homogenized, the smaller the distance between the stator and the rotor. For the grinding of ultra-fine materials, the distance between the stator and the rotor in the prior art has not been adjusted to be greater than 0.1 mm. However, the grinding homogenization principle of the present application is different, and therefore, when ultra-fine materials below 10 microns are required, the distance between the stator and the rotor of the present application does not need to be adjusted to be very small. The minimum distance between the stator rods and the rotor rods of the present application is generally controlled at about 1 mm, while the distance between the stator and the rotor in the conventional homogenizer is within 0.1 mm. Therefore, the homogenizer of the present application can avoid many technical problems caused by the too small gap in the conventional grinding homogenization.

[0048] The present application has a large distance between the stator and the rotor, which is greater than or equal to 0.5 mm. Therefore, the ground homogeneous mineral powder can be fed as long as it is less than 0.5 mm, and the ground homogeneous particle size area is much larger than that of the conventional homogenizer, and the ground homogeneous material is more extensive.

[0049] The present application has a large distance between the stator and the rotor, so the concentration of the grinding medium can be increased compared with the conventional homogenizer. For example, when grinding graphite, the content of graphite in water can reach 3%, and the grinding into graphene will not affect the load of the motor due to the increase in concentration.

[0050] The present application has a large distance between the stator and the rotor, and the rotor is in a high-speed running state, so the rotor and the stator do not have a high-strength friction process, and the rotor and the stator are not easy to wear, which reduces the maintenance cost. In addition, because the relative distance between the rotor and the stator is large, there is no high-strength friction process, and the content of metal powder generated is also small, so it will not cause the product metal to exceed the standard, and it can be applied to high-standard food, medicine, chemical industry and other application fields.

[0051] In the existing homogenizer, the contact surface between the rotor rod, the medium and the stator rod is a limited plane, which causes slow crushing speed and insufficient crushing force, which is also a key factor that directly affects the production capacity.

[0052] The present application has a large distance between the rotor rod and the stator rod, and does not rely solely on high-strength friction to break solid particles, so there is no instant high temperature, and temperature-sensitive solid particles can also be ground, and the performance of the product will not be affected by the excessively high temperature.

[0053] Compared with the prior art, the present application has the beneficial effects that the homogenizer provided by the present application greatly improves the production capacity, has lower requirements for the particle size and concentration of the raw material, has lower energy consumption, is not easy to introduce metal powder, has low requirements for the machining precision of the equipment, and has very low production and maintenance costs, and achieves very good comprehensive effects. BRIEF DESCRIPTION OF DRAWINGS

[0054] Figure 1 A stereoscopic schematic view of a preferred homogenizer of the present application;

[0055] Figure 2 A cross-sectional view of the working head of the homogenizer of the present application;

[0056] Figure 3 A design drawing of a stator and a rotor of the working head of the prior art homogenizer;

[0057] Figure 4 A design drawing of a stator and a rotor of the preferred homogenizer of the present application;

[0058] Figure 5 This is a design drawing of another preferred stator and rotor for the homogenizer of this application;

[0059] Figure 6 Electron micrographs of graphene aqueous solution samples obtained by existing homogenizers;

[0060] Figure 7 Electron micrograph of the graphene aqueous solution sample obtained by the homogenizer in this application;

[0061] Figure label:

[0062] Drive mechanism 1, fixed plate 2, elevator 3, rotating shaft 4, connecting rod 5, bearing seat 6, blade 7, material bucket 8;

[0063] The homogenizer has a working head 10, a rotor rod 11, a stator rod 12, a rotor plate 13, a stator plate 14, a through hole 15, a top plate 16, a side plate 17, and a bottom plate 18. Detailed Implementation

[0064] The present application will be further explained and described below with reference to the accompanying drawings and embodiments.

[0065] Example 1

[0066] This embodiment provides a homogenizer, the three-dimensional structure of which is shown in the figure below. Figure 1 As shown, the homogenizer includes a drive mechanism 1 (the drive mechanism 1 is a motor), a fixed plate 2, and a rotating shaft. Figure 1 (Not shown), the homogenizer working head 10, the outer shell of the homogenizer working head 10 is surrounded by a top plate 16, a bottom plate 18 and a cylindrical side plate 17, wherein the side plate 17 is provided with through holes 15 for feeding. The top plate 16 fixes the homogenizer working head 10 to the motor fixing plate 2 by a connecting rod 5.

[0067] A cross-sectional view of the homogenizer in this embodiment during operation is shown below. Figure 2 As shown, the homogenizer includes a drive mechanism 1, a fixed plate 2, a rotating shaft 4, a connecting rod 5, a bearing seat 6, blades 7, and a homogenizer working head. Figure 2 (Unmarked). Figure 2 In the process, the drive mechanism 1 can be a motor, the drive mechanism 1 is fixed on the fixed plate 2, the fixed plate 2 is installed on the elevator 3, and the homogenizer working head is immersed in the material bucket 8.

[0068] The main difference between this embodiment and the prior art lies in the design of the stator and rotor in the homogenizing grinding head. One example of the stator and rotor design in a prior art homogenizing grinding head is as follows: Figure 3 As shown, the Figure 3 In the diagram, the stator and rotor sections are located in the upper right and lower right corners, respectively, and are assembled to obtain... Figure 3The structure on the left. Each stator and rotor is designed with teeth for grinding and homogenization, which can be called stator teeth and rotor teeth. The sides of the stator teeth and rotor teeth are flat. After the stator and rotor parts are fitted together, the distance between the stator teeth and rotor teeth is constant. In order to obtain ultrafine materials, the distance needs to be adjusted to a very small size, generally less than 0.1 mm, and sometimes even only 0.05 mm. The requirements for processing and installation precision are very high, and the requirements for the particle size of the raw materials are also very high.

[0069] The stator and rotor design of the homogenizing grinding head provided in this embodiment is as follows: Figure 4 As shown, the stator and rotor are located at the lower right and upper right corners, respectively. The rotor section at the upper right corner is inverted and placed on top of the stator section at the lower right corner to obtain the homogenizer working head. Figure 4 As shown, the rotor section includes a rotor plate 13, on which a rotor rod 11 is fixed, forming a cylindrical rotor ring. A rotating shaft is located at the center of the rotor ring. Figure 4 (Not shown), four blades 7 are fixed on the rotating shaft. Similarly, there is a stator plate 14 in the lower right corner of the stator section, on which two stator rings formed by two stator rods 12 are fixed. After assembly, one rotor ring is located between the two stator rings. Both the rotor rod 11 and the stator rod 12 are screws with threads on their sides (threads not shown in the figure). Because the rotor rod 11 and the stator rod 12 are screws, the distance between them is not a constant value. During rotation, the distance between the rotor rod 11 and the adjacent stator rod 12 will change periodically. Through experiments, it is advisable to control the minimum distance between the rotor rod 11 and the stator rod 12 to 0.5-5mm. The minimum distance between the rotor rod 11 and the stator rod 12 can also be understood as the distance between the rotor ring and the stator ring.

[0070] As another embodiment, the structural diagram of the homogenizer working head of this application is as follows: Figure 5 As shown, with Figure 4 similar, Figure 5 The homogenizer working head shown has five stator rings fixed on the stator plate and four rotor rings fixed on the rotor plate.

[0071] As another embodiment, the stator rod 12 and / or rotor rod 11 of this application can also be made of screws. The screw part serves as the stator rod and rotor rod, and only screw holes need to be provided on the stator plate 14 and rotor plate 13 for installation.

[0072] The working head of the homogenizer is provided with a shell which is composed of a top plate 16, a bottom plate and a cylindrical side plate 17 to form a cylindrical structure. In some embodiments, the stator plate 14 is fixed with the bottom plate 18, and in other embodiments, the stator plate 14 can directly serve as the bottom surface of the shell, i.e. the bottom plate is omitted. The top plate 16 is fixed on the fixed plate 2 by a connecting rod 5 to fix the working head of the homogenizer. The side plate 17 is provided with through holes 15 (the size of the through holes 15 is exaggerated for easy representation) for feeding materials.

[0073] The homogenizer of the present application can easily produce multiple stator rings and rotor rings to improve the grinding efficiency due to the wide spacing between the stator and the rotor. Since the rotational speed of the rotating shaft of the present application does not need to be very high, one motor of the present application can also drive multiple grinding heads to work.

[0074] The working process of the homogenizer is as follows: the working head of the homogenizer includes a stator and a rotor. During operation, the working head of the homogenizer is immersed in the material barrel 8 (double-layer material barrel, the interlayer is filled with cooling water), the motor drives the rotating shaft 4 to rotate through the gear, the rotating shaft 4 drives the blade 7 to rotate to generate suction force, and the material in the material barrel 8 is sucked into the working head of the homogenizer; at the same time, the rotating shaft 4 drives the rotor to rotate to grind and homogenize the material.

[0075] The working principle of the homogenizer is analyzed as follows: the homogenizer of the present embodiment is driven by the motor to rotate the blade installed on the rotating shaft and the working head of the homogenizer at high speed to generate gap vacuum and then cavitation. Under the influence of the rotor and the stator, the solid and liquid are driven to move at high speed in a random manner. The shell of the working head of the homogenizer is provided with through holes, and the slurry is injected into the working head of the homogenizer together with the gas to make the fluid generate the energy for cavitation explosion. In this way, the central stirring blade rotates at high speed to generate instantaneous cavitation explosion of the fluid, the threads of the high-speed rotating rotor screw generate rotating fluid vortex, the energy fluid on the stator rotates upward along the threads, and the raised threads cut the particles in the fluid like countless knives. In this way, the energy generated by the turbulent flow and the turbulent flow of the liquid and solid, the impact of the high-speed gas flow and the high-speed liquid and solid flow, and the high-speed rotational flow of the three-phase flow of gas, solid and liquid generate huge energy, and the particles in the fluid are broken to the required particle size through mutual collision, tearing, shearing and cavitation physical kinetic energy. The huge energy in the process of grinding and homogenizing is not formed by the strong friction between the rotor and the stator, but is generated by the reasonable and scientific structure of the rotating homogenizer working head. Therefore, the energy consumption of the homogenizer working head is low, and the energy output is large.

[0076] Application Comparative Example 1

[0077] The inventor uses a German imported homogenizer, the structure of the working head of which is as follows: Figure 3The inventor used it to produce graphene, and the inventor produced 5 kg of graphene mixed solution (5 kg of water and 15 g of graphite as raw materials), which required a 4KW secondary motor to work at a speed of 10000r / min for 2 hours. It can be seen that the traditional homogenizer structure consumes a lot of energy.

[0078] The electron microscope photo of the graphene aqueous solution sample in the application comparative example is as shown in Figure 6 It can be seen that the size of graphene is still large and the color is black, indicating that the number of layers is thick.

[0079] In the application comparative example, if the particle size of the graphite raw material is large or the concentration is high, multi-stage grinding and homogenization are required. Generally, the concentration of graphite in water cannot exceed 0.5% (mass fraction), and the grinding time is 2 hours each time, resulting in high price of graphene.

[0080] Application Example 1

[0081] The homogenizer working head of the application example is as shown in Figure 4 Driven by a 2.2KW motor, the speed is set to 2600r / min, and the same sample of 30kg as in application comparative example 1 can be processed in the same time (2 hours). It can be seen that the production capacity of this application example is more than 10 times that of application comparative example 1 (4KW motor, speed 10000r / min). The product after grinding in application example 1 is detected by electron microscope, and the electron microscope picture obtained is as shown in Figure 7 It can be seen from Figure 6 and Figure 7 that the product obtained in the application example has smaller particles.

[0082] More importantly, the inventor grinds and homogenizes a graphene sample with higher concentration (5kg of water and 50g of graphite) by a 2.2KW motor, and the speed is set to 2600r / min. The grinding and homogenization can be completed in 2 hours. Through preliminary test, the homogenizer of the application can directly prepare a graphene solution with a concentration of 2% or even 3%. The concentration of the graphene solution in application comparative example 1 is 0.3%. Through comparison, it can be seen that the grinding and homogenization technology based on the grinding and homogenization machine provided in the application is a new energy-saving and high-yield technology.

Claims

1. A grinding homogenizer working head, characterized in that, The grinding homogenizer working head includes a homogenizer stator and a homogenizer rotor. The homogenizer stator includes a stator plate and a plurality of stator rods, the stator rods being fixed to the stator plate. The rotor includes a rotor plate and a plurality of rotor rods, the rotor rods being fixed to the rotor plate. Threaded protrusions for processing materials are provided on the outer surfaces of the stator rods and the outer surfaces of the rotor rods. The rotor rods and stator rods are parallel to each other, and the minimum distance between the rotor rods and stator rods is 0.5-5 mm. The plurality of stator rods form at least one ring of stator on the stator plate. The homogenizer head includes a rotor ring, wherein at least one rotor ring is formed on the rotor plate by a plurality of rotor rods, the centers of the stator ring and the rotor ring coincide, and each stator ring and each rotor ring are arranged alternately; the rotor rod and the stator rod are cylindrical; the threads on the stator rod and the threads on the rotor rod rotate in opposite directions; the homogenizer working head also includes a cylindrical outer shell, the top surface of which is provided with a top plate, the bottom surface of which is a stator plate, and the sides are cylindrical side plates, the rotor rod, the stator rod and the rotor plate are located inside the outer shell; through holes for feeding are distributed on the cylindrical side plates.

2. The grinding and homogenizing machine working head according to claim 1, characterized in that, The stator rod is detachably mounted on the stator plate, and / or the rotor rod is detachably mounted on the rotor plate.

3. The grinding and homogenizing mill working head according to claim 1, characterized in that, The outer surface of the stator rod is provided with 10-100 turns of thread; and / or, the outer surface of the rotor rod is provided with 10-100 turns of thread.

4. The grinding and homogenizing mill working head according to claim 1, characterized in that, The protrusions on both the stator rod and the rotor rod are threaded.

5. The grinding and homogenizing mill working head according to claim 1, characterized in that, The length of the stator rod is 10-1000mm; and / or, the length of the rotor rod is 10-1000mm.

6. The grinding and homogenizing mill working head according to claim 1, characterized in that, The stator ring has two or more turns, and the centers of each stator ring coincide; the rotor ring has two or more turns, and the centers of each rotor ring coincide.

7. A grinding homogenizer, characterized in that, Includes the grinding and homogenizing machine working head as described in any one of claims 1-6.

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