CN217796604U - Wet grinding device for preparing nano additive - Google Patents

Abstract

The utility model discloses a wet grinding device for preparing nano additive, which comprises a dispersion tank, a circulating tank, a sanding system, a finished product tank and a control device; the control device comprises a first three-way valve, a second three-way valve and a discharge valve, the discharge port of the dispersion tank is communicated with the first port of the first three-way valve, the second port and the third port of the first three-way valve are communicated with the feed inlet of the sanding system and the discharge port of the circulation tank respectively, the first port of the second three-way valve is communicated with the discharge port of the sanding system, the second port and the third port of the second three-way valve are communicated with the feed pipe of the dispersion tank and the feed inlet of the circulation tank respectively, and the discharge port of the dispersion tank and the discharge port of the circulation tank are communicated with the feed inlet of the finished product tank through the discharge valve. The utility model discloses a combined action of dispersion jar, circulation jar, sanding system, finished product jar, controlling means realizes that sanding system circulation grinds, and the number of times is ground in the control effectively, reaches the effect that the particle diameter was ground to the accurate control additive.

Description

Wet grinding device for preparing nano additive

Technical Field

The utility model relates to an additive grinds the field, especially relates to a wet process grinder for preparing nanometer additive.

Background

In the industry of anode materials, ternary materials and lithium iron phosphate materials are coated and doped, so that the performance of the anode materials is improved, generally, the anode materials need to be sintered twice, elements such as Mg, al, zr, W and Nb are added in the first sintering mode for doping, and elements such as B, sr and Ti are added in the second sintering mode for coating the first sintering intermediate product. At present, in the material mixing process of the anode material, a powder additive is added to carry out dry material mixing, doping and coating, the powder additive is difficult to be in a nanometer level, or the powder additive is made into an agglomerated nanometer level additive, the existing wet grinding machine conveys slurry to a wet ball mill for primary grinding, the slurry is conveyed to a sand mill for secondary grinding after grinding and cooling, the slurry enters a cyclone for classification after being fully ground, a small amount of coarse materials after classification of the cyclone are subjected to rewet ball milling circulation, and qualified mixture enters a storage tank for subsequent production. The grinding slurry is classified by using a cyclone, and the problems of low classification efficiency, poor classification effect, low precision and the like of the nano-scale slurry exist.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a can prepare nanometer additive, efficient, the high wet grinding device who is used for preparing nanometer additive of precision.

The wet grinding device for preparing the nano additive comprises a dispersion tank, a circulating tank, a sanding system, a finished product tank and a control device; the dispersion tank comprises a first stirring device arranged in the dispersion tank, and the first stirring device is used for scattering and stirring the slurry; controlling means includes first three-way valve, second three-way valve and discharge gate, the discharge gate of dispersion jar with the first port intercommunication of first three-way valve, the second port and the third port of first three-way valve respectively with the feed inlet of sanding system with the discharge gate intercommunication of circulation jar, the first port of second three-way valve with the discharge gate intercommunication of sanding system, the second port and the third port of second three-way valve respectively with the inlet pipe of dispersion jar with the feed inlet intercommunication of circulation jar, the discharge gate of dispersion jar with the discharge gate of circulation jar passes through discharge gate with the feed inlet intercommunication of finished product jar.

According to the utility model discloses a wet grinding device for preparing nano-additive has following technological effect at least: through the combined action of the dispersion tank, the circulation tank, the sanding system, the finished product tank and the control device, the sanding system between the dispersion tank and the circulation tank can grind circularly, effectively controls the grinding times, achieves the effect of accurately controlling the grinding particle size of the additive, and can produce the nano additive in large batch.

Further, the sanding system comprises a diaphragm pump, a filter, a pipeline demagnetizer, a heat exchanger and a sanding machine which are sequentially arranged.

Furthermore, the filter is two, two the filter is parallelly connected the setting, two the feed inlet and the discharge gate of filter all are connected with the third three-way valve.

The device comprises a dispersion tank, a metering component, a arch breaking device and a feeding device, wherein the metering component comprises a metering bin, an arch breaking device and the feeding device, the metering bin is communicated with a feeding hole of the dispersion tank, the metering bin is connected with a first weighing device, the arch breaking device comprises a rotatable rake cutter, the rake cutter is arranged at the bottom of the metering bin, the feeding device comprises a rotatable pushing spiral, and the pushing spiral is arranged below the rake cutter.

Furthermore, the metering bin comprises a straight cylinder section and a conical cylinder section, wherein the large opening end of the conical cylinder section is communicated with the straight cylinder section, and the small opening end of the conical cylinder section is communicated with the feed inlet of the dispersion tank; the taper of the conical cylinder section is more than or equal to 70 degrees, the diameter of the straight cylinder section is defined as R1, the diameter of the small opening end is defined as R2, and R2 is more than or equal to 0.5R1.

Further, the first stirring device comprises a dispersion disc capable of rotating at a high speed and a first anchor type paddle capable of rotating at a low speed.

Further, the dispersion tank, the circulation tank and the finished product tank are all provided with second weighing devices.

Further, the circulation tank with the finished product jar all installs second agitating unit, second agitating unit includes upper layer book leaf oar, middle level book leaf oar and second anchor formula oar.

Further, still include the mixed equipment of cladding, the finished product jar through first pipeline with the mixed equipment of cladding intercommunication of cladding, first pipe connection has the discharge pump.

Furthermore, the dispersion tank, the circulation tank and the finished product tank are communicated with external pure water through a second pipeline, the second pipeline is communicated with the first pipeline through a third pipeline, and the third pipeline is connected with a recoil valve.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a wet grinding apparatus for preparing nano-additive according to an embodiment of the present invention;

FIG. 2 is a schematic view of the structure of a dispersion tank;

FIG. 3 is a schematic view of the construction of the circulation tank;

FIG. 4 is a schematic structural view of a finished tank and a hybrid cladding apparatus;

FIG. 5 is a schematic illustration of a sanding system;

fig. 6 is a schematic structural view of the metering assembly.

Reference numerals: the system comprises a dispersion tank 100, a first stirring device 110, a dispersion disc 111, a first anchor paddle 112, a circulation tank 200, a second stirring device 210, an upper-layer flap paddle 211, a middle-layer flap paddle 212, a second anchor paddle 213, a second pipeline 220, a sanding system 300, a diaphragm pump 310, a filter 320, a pipeline demagnetizer 330, a heat exchanger 340, a sanding machine 350, a finished product tank 400, a first pipeline 410, a discharge pump 411, a control device 500, a first three-way valve 510, a second three-way valve 520, a discharge valve 530, a third three-way valve 540, a metering assembly 600, a metering bin 610, a first weighing device 611, a straight cylinder section 612, a conical cylinder section 613, an arch breaking device 620, a rake knife 621, a feeding device 630, a pushing screw 631, a second weighing device 700, a mixing and coating equipment 800, a third pipeline 900 and a recoil valve 910.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated, for example, up, down, left, right, etc., referred to the orientation description is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, if there are first and second descriptions for distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.

In the description of the present invention, unless there is an explicit limitation, the terms such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the terms in the present invention by combining the specific contents of the technical solution.

Referring to fig. 1, a wet grinding apparatus for preparing nano-additives according to an embodiment of the present invention includes a dispersion tank 100, a circulation tank 200, a sanding system 300, a product tank 400, and a control device 500; the dispersion tank 100 includes a first stirring device 110 installed in the dispersion tank 100, the first stirring device 110 for scattering and stirring the slurry; control device 500, including first three-way valve 510, second three-way valve 520 and discharge gate 530, the discharge gate of dispersion jar 100 communicates with the first port of first three-way valve 510, the second port and the third port of first three-way valve 510 communicate with the feed inlet of sanding system 300 and the discharge gate of circulation tank 200 respectively, the first port of second three-way valve 520 communicates with the discharge gate of sanding system 300, the second port and the third port of second three-way valve 520 communicate with the feed pipe of dispersion jar 100 and the feed inlet of circulation tank 200 respectively, the discharge gate of dispersion jar 100 and the discharge gate of circulation tank 200 pass through discharge gate 530 and the feed inlet of finished product jar 400 and communicate.

The utility model discloses a wet process grinder for preparing nano-additive can grind the thick liquids circulation, and can control effectively and grind the number of times, and accurate control additive grinds the particle diameter. In the embodiment of fig. 2, a first stirring device 110 is installed in the dispersion tank 100, the first stirring device 110 includes two dispersion disks 111 and a first anchor paddle 112, the two dispersion disks 111 are arranged at intervals left and right and are located in the middle of the dispersion tank 100, the first anchor paddle 112 is installed at the bottom of the dispersion tank 100, the first anchor paddle 112 and the dispersion disks 111 are both driven to rotate by a motor, the motor drives the dispersion disks 111 to rotate at a high speed so as to shear and break up slurry at a high speed, and the motor drives the first anchor paddle 112 to stir slurry in the tank body at a low speed so as to prevent the slurry from settling; as shown in fig. 3 and 4, the second stirring device 210 is installed in the circulation tank 200 and the finished product tank 400, the second stirring device 210 includes an upper-layer flap paddle 211, a middle-layer flap paddle 212 and a second anchor paddle 213, the upper-layer flap paddle 211, the middle-layer flap paddle 212 and the second anchor paddle 213 are installed on a rotating shaft, and the motor drives the rotating shaft to rotate so as to drive the upper-layer flap paddle 211, the middle-layer flap paddle 212 and the second anchor paddle 213 to rotate, thereby preventing the slurry from settling and layering, further enabling the slurry to be uniformly distributed, reducing the risk of material blockage of the sanding system 300, and further achieving the effects of improving the high solid content of the additive slurry and improving the grinding efficiency of the additive; as shown in fig. 1, the first three-way valve 510 has an A1 port, a B1 port, and a C1 port, the C1 port communicating with the discharge port of the dispersion tank 100, the A1 port communicating with the feed port of the sanding system 300, and the B1 port communicating with the discharge port of the circulation tank 200; the second three-way valve 520 has an A2 port, a B2 port, and a C2 port, the C2 port communicating with the discharge port of the sanding system 300, the A2 port communicating with the feed pipe of the dispersion tank 100, the B2 port communicating with the feed port of the circulation tank 200; specifically, the discharge valve 530 is also a three-way valve, the left discharge valve 530 is a fourth three-way valve, the right discharge valve 530 is a fifth three-way valve, the upper and lower ports of the fourth three-way valve are respectively communicated with the discharge port and the C1 port of the dispersion tank 100, the right port of the fourth three-way valve is communicated with the finished product tank 400, the upper and lower ports of the fifth three-way valve are respectively communicated with the discharge port and the B1 port of the circulation tank 200, and the right port of the fifth three-way valve is communicated with the finished product tank 400; the second weighing devices 700 are installed on the dispersion tank 100, the circulation tank 200 and the finished product tank 400, and the second weighing devices 700 feed weighing information back to the PLC, so that automatic control of water distribution, circulating grinding and automatic tank transferring can be realized.

When in work:

water distribution control: the PLC controls pure water to enter the dispersion tank 100, the PLC records the weight m5 of the dispersion tank 100, when the second weighing device 700 feeds back and weighs m6, m7= m6-m5, m7 is the weight of single water distribution of the pure water, the PLC stops the pure water from entering, and the water distribution is completed. m7 is determined according to the formula requirements.

And (3) feeding control: the PLC controls the material to enter the dispersion tank 100 from the feed inlet.

A stirring device: after the dispersion tank 100 is distributed with water, the motor is started, the motor drives the dispersion plate 111 and the first anchor paddle 112 to rotate, and then the high-speed and low-speed stirring of the dispersion tank 100 is started to disperse the slurry. The high-speed and low-speed stirring time t is set, and in the stirring and dispersing process, the pure water and the additive are stirred and dispersed at a high speed to uniformly disperse the additive in the pure water, and the dispersion disc 111 rotates at a high speed to have a strong dissociation and agglomeration effect on the additive particles, so that the agglomeration of large particles and the agglomeration of small particles can be dissociated, and the downstream filter screen is prevented from being blocked by agglomerated large particles of the additive. The stirring of the low-speed anchor type paddle enables the additive and water to be uniformly mixed, and the anchor type paddle is designed to be tightly attached to the bottom and the side wall of the dispersion tank 100, so that the phenomena of bottom settling and the like of the additive in water can be effectively prevented.

Singular grinding process: slurry which is uniformly dispersed in the dispersion tank 100 is discharged from the lower port by opening the upper port and the lower port of a discharge valve 530 of the dispersion tank 100 through a PLC controller, the PLC controls the first three-way valve 510 to be switched to an A1 outlet for discharging, the additive slurry enters the three-way valve from the inlet of the C1 side and then is discharged from the outlet of the A1 side (if the discharge valve port 530 is not available, the additive slurry enters the three-way valve from the inlet of the C1 side and then is discharged from the outlet of the A1 side), then the additive slurry enters the sanding system 300 for grinding, the additive slurry enters the B2 side through the inlet of the C2 side of the second three-way valve 520 after being ground by the sanding machine 350, and the ground additive slurry enters the circulation tank 200 through the feed inlet of the circulation tank 200. When the weight of the dispersion tank 100 is 0, the whole slurry after grinding is fed into the circulation tank 200, and the singular grinding of the additive is completed.

Double grinding process: even grinding process is the odd number and grinds the back of accomplishing, and the even thick liquids of dispersion are discharged from ejection of compact valve 530 in PLC control circulation jar 200, and both ends mouth intercommunication about PLC control circulation jar 200's ejection of compact valve 530 makes thick liquids discharge from lower port, if ejection of compact valve 530 does not communicate with first valve, only need following step: the PLC controls the first three-way valve 510B1 and A1 to be communicated, the slurry in the circulation tank 200 enters the sanding system 300 again through the first three-way valve 510 to be ground, after the grinding, the PLC controls the C2 and A2 of the second three-way valve 520 to be communicated, and the ground additive slurry enters the dispersion tank 100 through the second three-way valve 520. When the weight of the circulation tank 200 is 0, all the slurry after grinding is injected into the dispersion tank 100, and the secondary grinding of the additive is completed.

A plurality of grinding processes: if the polishing is continued, the singular polishing step and the plural polishing step are repeated.

A tank transferring process: after multiple times of circular grinding, whether the granularity of the additives in the dispersion tank 100 and/or the circulation tank 200 meets the requirement is detected, after the requirement is met, the PLC controls the upper right side ports of the discharge valve 530 of the dispersion tank 100 and/or the upper right side ports of the discharge valve 530 of the circulation tank 200 to be communicated, the qualified finished additives after grinding enter the finished product tank 400 through the discharge valve 530, and when the weight of the dispersion tank 100 and/or the circulation tank 200 is 0, all the ground finished product slurry is pumped into the finished product tank 400, so that the finished additives are transported.

Specifically, the dispersing tank 100 and the circulating tank 200 may be provided with sampling ports, and in the wet grinding process of the additive by the sanding system 300, the ground additive slurry may be sampled and detected for particle size distribution by the sampling ports of the dispersing tank 100 and the circulating tank 200, and the grinding particle size may be monitored. The PLC can realize the multiple grinding of double-tank circulation of the additive, realize the accurate control of the particle size of the additive, grind the additive slurry to be nano-scale through the multiple circulating grinding, and effectively coat the additive.

Further, as shown in fig. 5, the sanding system 300 includes a diaphragm pump 310, a filter 320, a pipe demagnetizer 330, a heat exchanger 340, and a sanding machine 350, which are sequentially disposed.

In operation, the diaphragm pump 310 is turned on, the diaphragm pump 310 provides a pumping force to pump the slurry in the dispersion tank 100 to the sanding system 300, and the slurry passes through the filter 320, the pipe demagnetizer 330, the plate heat exchanger 340, and the sand mill 350 in sequence. The filter 320 is used for filtering impurities in the slurry, and the pipe demagnetizer 330 is used for adsorbing magnetic foreign matters in the slurry. The slurry can effectively reduce foreign matters in the additive slurry and improve the purity of the additive through the filtering and demagnetizing effects.

Further, as shown in fig. 5, there are two filters 320, two filters 320 are disposed in parallel, and the inlet and outlet of the two filters 320 are connected to a third three-way valve 540. The two filters 320 are arranged at intervals up and down, and the two ends are connected through a third three-way valve 540; two filters 320 are provided to effectively switch the three-way valve and switch the filters 320 when the filters 320 are clogged, thereby preventing the influence on the production.

Further, as shown in fig. 1 and 6, the metering assembly 600 is further included, the metering assembly 600 includes a metering bin 610, an arch breaking device 620 and a feeding device 630, the metering bin 610 is communicated with the feed inlet of the dispersion tank 100, the metering bin 610 is connected with a first weighing device 611, the arch breaking device 620 includes a rotatable rake knife 621, the rake knife 621 is disposed at the bottom of the metering bin 610, the feeding device 630 includes a rotatable pushing screw 631, and the pushing screw 631 is mounted below the rake knife 621.

And (3) feeding control: the PLC controls the material supplementing of the metering bin 610, the PLC controls the opening of the feeding hole in the top of the metering bin 610, the material enters the metering bin 610, and when the weighing signal M1 fed back by the first weighing device 611 of the metering bin 610 is larger than the set value M1 of the metering bin 610, the PLC controls the closing of the feeding hole in the top of the metering bin 610, so that the material supplementing of the metering bin 610 is completed. Metering control: the PLC controls the feeding of the dispersing tank 100, records the weight m2 of the metering bin 610, sequentially controls the opening of a discharge hole at the bottom of the metering bin 610, drives the rake blade 621 to rotate and drives the material pushing spiral 631 to rotate, and the powder additive in the metering bin 610 is sent out through the material pushing spiral 631 so that the additive falls into the dispersing tank 100. When the feedback weighing of the first weighing device 611 is m3, m4= m2-m3, m4 is the single ingredient weight of the additive, and the PLC controls to close the outlet of the metering bin 610 and the motor, so that the ingredient is completed. The weight-reducing batching is performed through the metering device, and the metering bin 610 can meter the batching with the weight m4 required by the formula to the dispersion tank 100.

Further, as shown in fig. 6, the metering bin 610 includes a straight cylinder section 612 and a conical cylinder section 613, a large opening end of the conical cylinder section 613 is communicated with the straight cylinder section 612, and a small opening end of the conical cylinder section 613 is communicated with the feed inlet of the dispersion tank 100; the taper of the conical cylinder section 613 is more than or equal to 70 degrees, the diameter of the straight cylinder section 612 is defined as R1, the diameter of the small opening end is defined as R2, and R2 is more than or equal to 0.5R1.

By the inclined design of the bottom of the metering bin 610 (i.e. the conical barrel section 613), the material blockage of the metering bin 610 can be effectively avoided. Meanwhile, the bottom of the conical bottom of the metering bin 610 is provided with the rake cutter 621 and the spiral, so that bridging and material blockage of the additive in the metering bin 610 can be effectively avoided.

Further, as shown in fig. 1 and 4, a mixing and coating device 800 is further included, the finished product tank 400 is communicated with the mixing and coating device 800 through a first pipeline 410, and the first pipeline 410 is connected with a discharge pump 411.

And discharging the qualified additive slurry with the granularity from the qualified ground additive finished product through the discharge valve 530 of the dispersion tank 100 and the discharge valve 530 of the circulation tank 200, and conveying the qualified slurry additive finished product tank 400 through the discharge pump 411, wherein when the weight of the dispersion tank 100 and the weight of the circulation tank 200 are 0, all the ground finished product slurry is pumped into the finished product tank 400, and the finished additive product is transported.

Further, as shown in fig. 1, the dispersion tank 100, the circulation tank 200, and the product tank 400 are communicated with the outside pure water through a second pipe 220, the second pipe 220 is communicated with the first pipe 410 through a third pipe 900, and the third pipe 900 is connected with a back flush valve 910.

After delivery of the acceptable slurry additive, the first conduit 410 has residual finished additive and needs to be flushed. In operation, the backflush valve 910 is opened, and pure water is introduced into the first pipe 410 through the second pipe 220 and the third pipe 900, thereby flushing the residual product additive in the first pipe 410. By back flushing the pipeline with pure water, the additive residue in the pipeline can be effectively reduced, and the additive can be mixed with the finished product tank 400 according to the required weight of the formula and fed into the downstream mixing and coating equipment 800.

In the description of the present specification, reference to the term "some embodiments" or "what is contemplated" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. The wet grinding device for preparing the nano additive is characterized by comprising a dispersion tank, a circulating tank, a sanding system, a finished product tank and a control device;

the dispersion tank comprises a first stirring device arranged in the dispersion tank, and the first stirring device is used for scattering and stirring the slurry;

controlling means, including first three-way valve, second three-way valve and discharge gate, the discharge gate of dispersion jar with the first port intercommunication of first three-way valve, the second port and the third port of first three-way valve respectively with the feed inlet of sanding system with the discharge gate intercommunication of circulation jar, the first port of second three-way valve with the discharge gate intercommunication of sanding system, the second port and the third port of second three-way valve respectively with the inlet pipe of dispersion jar with the feed inlet intercommunication of circulation jar, the discharge gate of dispersion jar with the discharge gate of circulation jar passes through discharge gate with the feed inlet intercommunication of finished product jar.

2. The wet grinding apparatus for the preparation of nano-additives as set forth in claim 1, wherein: the sanding system comprises a diaphragm pump, a filter, a pipeline demagnetizer, a heat exchanger and a sanding machine which are sequentially arranged.

3. The wet grinding apparatus for the preparation of nano-additives as set forth in claim 2, wherein: the filter is two, two the filter is parallelly connected the setting, two the feed inlet and the discharge gate of filter all are connected with the third three-way valve.

4. The wet grinding apparatus for the preparation of nano-additives as set forth in claim 1, wherein: the device comprises a dispersion tank, and is characterized by further comprising a metering assembly, wherein the metering assembly comprises a metering bin, an arch breaking device and a feeding device, the metering bin is communicated with a feed inlet of the dispersion tank, the metering bin is connected with a first weighing device, the arch breaking device comprises a rotatable rake cutter, the rake cutter is arranged at the bottom of the metering bin, the feeding device comprises a rotatable pushing screw, and the pushing screw is arranged below the rake cutter.

5. The wet grinding apparatus for the preparation of nano-additives as set forth in claim 4, wherein: the metering bin comprises a straight cylinder section and a conical cylinder section, the large opening end of the conical cylinder section is communicated with the straight cylinder section, and the small opening end of the conical cylinder section is communicated with the feed inlet of the dispersion tank; the taper of the conical cylinder section is more than or equal to 70 degrees, the diameter of the straight cylinder section is defined as R1, the diameter of the small opening end is defined as R2, and R2 is more than or equal to 0.5R1.

6. The wet grinding apparatus for the production of nano-additives according to any one of claims 1 to 5, wherein: the first stirring device comprises a dispersion disc capable of rotating at a high speed and a first anchor type paddle capable of rotating at a low speed.

7. The wet grinding apparatus for the production of nano-additives according to any one of claims 1 to 5, wherein: the dispersion tank, the circulation tank and the finished product tank are all provided with second weighing devices.

8. The wet grinding apparatus for the production of nano-additives according to any one of claims 1 to 5, wherein: the circulation tank with second agitating unit is all installed to the finished product jar, second agitating unit includes upper layer folded blade oar, middle level folded blade oar and second anchor formula oar.

9. The wet grinding apparatus for the production of nano-additives according to any one of claims 1 to 5, wherein: still include the mixed equipment of cladding, the finished product jar through first pipeline with the mixed equipment of cladding intercommunication of cladding, first pipe connection has the discharge pump.

10. The wet grinding apparatus for the preparation of nano-additives as set forth in claim 9, wherein: the dispersion tank, the circulating tank and the finished product tank are communicated with external pure water through a second pipeline, the second pipeline is communicated with the first pipeline through a third pipeline, and the third pipeline is connected with a recoil valve.

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