CN218132288U - Water mill device of superfine inorganic non-metallic powder - Google Patents
Water mill device of superfine inorganic non-metallic powder Download PDFInfo
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- CN218132288U CN218132288U CN202222103862.XU CN202222103862U CN218132288U CN 218132288 U CN218132288 U CN 218132288U CN 202222103862 U CN202222103862 U CN 202222103862U CN 218132288 U CN218132288 U CN 218132288U
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Abstract
The utility model discloses a water mill device for superfine inorganic non-metallic powder, which comprises a speed reducer, a sample inlet, a grinding cavity, a grinding rod, a first screen, a stirring paddle, a first spherical valve, a circulating pump, a second spherical valve, a screening device and a third spherical valve; the speed reducer is connected with the grinding rod and the stirring paddle through a rotating shaft; the upper left of the grinding cavity is provided with a sample inlet; the middle lower part of the grinding cavity is provided with a first screen; the bottom of the grinding cavity is provided with a first ball valve; the right side of the grinding cavity is provided with a circulating pump; the right side of the circulating pump is provided with a second spherical valve; the third spherical valve is arranged in a circulating pipeline of the water mill device; the screening plant sets up in whole wet grinding device's rightmost end. The utility model discloses a water mill device structure and use simple process and application scope are wide, can realize the superfine operation to the lapping object under the condition of low energy consumption, short time to very big narrowing is by the particle size distribution of lapping object, still can realize the collection of minimum granule simultaneously, wholly improves by the added value of lapping object.
Description
Technical Field
The utility model belongs to the technical field of the mill device is made, a mill device of superfine inorganic non-metallic powder is related to, specifically speaking is a mill device that can be high-efficient, low energy consumption will be ground the thing and grind to high mesh number and can give the narrower particle size distribution of the thing that is ground.
Background
Inorganic non-metal powder is often used as filler for filling materials such as plastics, rubber, paint, paper and the like due to the characteristics of low price, simplicity, easy obtaining, special function and the like. The inorganic non-metal powder is used as general filling material, its main technical parameters are its grain size (mesh number) and grain size distribution, and the regulation and control method can be roughly divided into dry grinding method and wet grinding method, both of which have advantages. The dry milling method is generally a method in which a dry mineral is directly ground and classified by using a vertical mill to obtain a fine powder having a narrow particle size distribution, but since the friction force rapidly increases after the particles are refined, the method cannot obtain a high-mesh powder at a low cost, and the added value of the dry milling powder is low. The wet grinding method is generally to mix materials and water according to a certain proportion, then to grind by using the impact action of a stirrer driving zirconium beads or small steel bars, and the method can obtain powder with high mesh number relatively simply, but because of strong grinding and the common water grinding device without a screening device, the obtained slurry has wide particle size distribution, and in order to obtain slurry with high mesh number, the grinding needs to be carried out for a long time.
Chinese patent document (publication No. CN 2611034) discloses a novel ultrafine particle water mill, which realizes wet grinding of non-metallic minerals by adding a grinding rotor, a turntable and other components, and has the advantages of wide application range of ground materials, low energy consumption, high efficiency and the like, but the device is still a traditional water mill, and cannot classify ground slurry, so that the problem of wider particle grinding particle size is inevitably caused.
Chinese patent document (publication No. CN213000354 mu) discloses a fly ash water mill device, which effectively improves the rotating and stopping speed of a cylinder body and reduces the rotating and stopping time of the cylinder body by adding a brake rod and a brake pad on a driving device, thereby improving the working efficiency and saving the cost. Since this apparatus does not include a classifier, the ground fly ash can be made to have a high mesh size, but the width of the particle size distribution cannot be reduced and the installation of the brake apparatus increases the energy consumption.
In conclusion, the novel water mill device with the screening system is provided for solving the problems of wide abrasive particle size distribution, long grinding time and high energy consumption of the existing inorganic nonmetal water mill device, and aims at solving the problems of high efficiency and low energy consumption.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a water mill device of superfine inorganic non-metallic powder to solve inorganic powders such as calcium carbonate, silica and barium sulfate at the water mill in-process, the granule particle diameter distribution that meets is wide, and the energy consumption is high, obtains the long problem of high mesh needs grinding time.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a water mill device for superfine inorganic non-metallic powder comprises a speed reducer, a sample inlet, a grinding cavity, a grinding rod, a first screen, a stirring paddle, a first spherical valve, a circulating pump, a second spherical valve, a screening device and a third spherical valve; the speed reducer is connected with the grinding rod and the stirring paddle through a rotating shaft; the upper left of the grinding cavity is provided with a sample inlet; the middle lower part of the grinding cavity is provided with a first screen; the bottom of the grinding cavity is provided with a first spherical valve; the right side of the grinding cavity is provided with a circulating pump; the right side of the circulating pump is provided with a second spherical valve; the third spherical valve is arranged in a circulating pipeline of the water mill device; the screening plant sets up in whole wet grinding device's rightmost end.
Furthermore, the speed reducer is a 220kw/h speed reducer.
Further, the volume of the grinding cavity is 10m 3 A grinding chamber.
Furthermore, the aperture of the first screen is 0.4-0.6 mm.
Further, the stirring paddle is an anchor type stirring paddle.
Furthermore, the screening device comprises a second screen, a first vibrator, a fourth ball valve, a storage box, a storage cavity, a third screen, a second vibrator and a fifth ball valve; the leftmost side of the screening device is provided with a second screen; a first vibrator is arranged on the first screen; the right side of the first vibrator is provided with a storage box; a fourth ball valve is arranged below the storage box; the right side of the storage box is provided with a third screen; a second vibrator is arranged on the third screen; the right side of the second vibrator is provided with a storage cavity; a fifth ball valve is arranged below the storage cavity.
Furthermore, the aperture of the second screen is 3-3.5 μm.
Furthermore, the aperture of the third screen is 0.2-0.3 μm.
The utility model discloses a realize based on following principle:
because the zirconium beads with different particle sizes have different crushing effects on the crushed objects with different particle sizes, the zirconium beads with different particle sizes are usually required to be placed in the water grinding cavity, but the number of invalid collisions of the zirconium beads is increased, energy waste is caused, and energy consumption and grinding time are increased. Therefore, the utility model discloses use the screen cloth in suitable aperture to part the zirconium pearl that is fit for the particle diameter, under the effect of bottom stirring rake, the granule that the particle diameter is little can be driven to screen cloth upper portion, is strikeed by the less zirconium pearl of particle diameter and grinds, and the granule that the particle diameter is big then can stay in the bottom, is strikeed by the great zirconium pearl of particle diameter and grinds, when the big granule of particle diameter smashes to less particle diameter, can drive again to grind to upper portion by bottom stirring rake. Therefore, the zirconium beads are isolated by the screen, so that the effective collision of the zirconium beads is increased, and the energy consumption is low. In addition, the effect of separating particles with undersize particle sizes and back-grinding particles with oversize particle sizes is realized by additionally arranging an external circulation screening device, and finally the effect of narrowing the whole particle size distribution is realized.
Through this technical scheme, can realize following technological effect:
the utility model discloses a water mill device structure and use simple process and application scope are wide, can be under the condition of low energy consumption, short time, realized the superfine operation of lapping thing to very big narrowing the particle size distribution by the lapping thing, still realized the collection of minimum granule simultaneously, wholly improved the added value by the lapping thing.
Drawings
FIG. 1 is a schematic view of the water mill for ultrafine inorganic non-metallic powder according to the present invention.
In FIG. 1: 1-a speed reducer; 2-a sample inlet; 3-grinding chamber; 4-grinding rod; 5-a first screen; 6-stirring paddle; 7-a first ball valve; 8-circulating pump; 9-a second ball valve; 10-a screening device; 11-third ball valve.
Figure 2 is a schematic diagram of the construction of the screening device.
In fig. 2: 1' -a second screen; 2' -a first vibrator; 3' -a fourth ball valve; 4' -a storage box; 5' -a storage cavity; 6' -a third screen; 7' -a second vibrator; 8' -fifth ball valve.
FIG. 3 is a graph showing the particle size distribution of example 1 and comparative examples 1 and 2.
FIG. 4 is a graph showing the particle size distribution of example 2 and comparative example 3.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to the schematic diagram 1, the water mill device for the ultrafine inorganic non-metal powder comprises a speed reducer 1, a sample inlet 2, a grinding cavity 3, a grinding rod 4, a first screen 5, a stirring paddle 6, a first spherical valve 7, a circulating pump 8, a second spherical valve 9, a screening device 10 and a third spherical valve 11.
The speed reducer 1 is a 220kw/h speed reducer.
The volume of the grinding cavity 3 is 10m 3 A grinding chamber.
The aperture of the first screen 5 is 0.6mm (screens with other apertures can be selected according to requirements).
The stirring paddle 6 is an anchor type stirring paddle.
With reference to the schematic figure 2, the screening device 10 comprises a second screen 1', a first vibrator 2', a fourth ball valve 3', a storage box 4', a storage chamber 5', a third screen 6', a second vibrator 7', a fifth ball valve 8';
the second screen 1' has a pore size of 3 μm (other pore sizes may be selected as required).
The third screen 6' has a pore size of 0.2 μm (other screen sizes may be selected as required).
The speed reducer 1 is connected with the grinding rod 4 and the stirring paddle 6 through a rotating shaft, and the speed reducer 1 drives the grinding rod 4 and the stirring paddle 6 to grind and stir. The upper left of the grinding cavity 3 is provided with a sample inlet 2. The middle lower part of the grinding cavity 3 is provided with a first screen 5 for separating zirconium beads with different grain diameters. The bottom of the grinding chamber 3 is provided with a first ball valve 7 for discharging. The right side of the grinding cavity 3 is provided with a circulating pump 8 which provides power for screening and slurry circulation. The right side of the circulating pump 8 is provided with a second spherical valve 9 for controlling the water replenishing amount. The third ball valve 11 is arranged in a circulating pipeline of the water mill device and used for controlling circulation. The screening device 10 is arranged at the rightmost end of the whole water mill device and is used for screening ground slurry. The leftmost screen of the screening device 10 is a second screen 1', the first screen 1' is provided with a first vibrator 2', and the right side of the first vibrator 1' is a finished product storage box 4' for storing finished products. A fourth ball valve 3 'is arranged below the final product storage box 1' and used for discharging. The third screen 6 'is arranged on the right side of the final product storage box 4' and is used for further distinguishing small-particle products. A second vibrator 7' is mounted on the third screen for reducing wire sticking. And a particle storage cavity 5' with the undersize particle diameter is arranged on the right of the second vibrator and is used for storing products with the undersize particle diameter. A fifth ball valve 8 'is arranged below the particle storage cavity 5' for discharging.
The process flow comprises the following steps: adding zirconium beads with different grain diameters into the upper layer and the lower layer of the grinding cavity respectively, then continuously adding mixed slurry of the ground object and water, opening a speed reducer switch, driving a grinding rod and an anchor type stirring paddle to rotate by the speed reducer, grinding the ground object, recording grinding time when the ground object is ground to a required grain diameter, opening a circulating pump switch, a switch of a first vibrator and a switch of a second vibrator in a screening device, respectively pumping the ground slurry into a final product storage box and a grain diameter undersize storage cavity, opening a fourth spherical valve and a fifth spherical valve to collect old products and undersize grains respectively, closing the fourth spherical valve and the fifth spherical valve after the collection is finished, opening the second spherical valve and the third spherical valve, flushing the old products and the undersize grains which cannot enter the screening device back into the grinding cavity by a small amount of water, continuously grinding, and simultaneously continuously feeding new ground slurry from a sample inlet.
The raw materials are 400-mesh heavy calcium carbonate and barium sulfate, and need to be ground to 5000 meshes as an example for explanation:
example 1
1. Respectively adding 100kg of zirconium beads with the particle sizes of 0.8-1.2mm and 2.0-2.5mm into the upper layer and the lower layer in the grinding cavity, and continuously adding 400-mesh calcium carbonate slurry with the solid content of 50% into the grinding cavity;
2. turning on a speed reducer switch, grinding the calcium carbonate until the particle size D100 is approximately equal to 3.0 μm, and recording the grinding time;
3. opening a circulating pump switch and a first vibrator switch and a second vibrator switch in the screening device, and respectively driving the grinding slurry into a final product storage box and a particle storage cavity with an undersize particle size;
4. opening a fourth spherical valve and a fifth spherical valve to respectively collect a finished product (sample 1 in the embodiment) and the fine particles, and closing the fourth spherical valve and the fifth spherical valve after the collection is finished;
5. and opening the second spherical valve and the third spherical valve, flushing back the grinding cavity which cannot enter the screening device by using a small amount of water, continuously grinding, and continuously feeding new grinding slurry from the sample inlet.
Example 2
1. Respectively adding 100kg of zirconium beads with the particle size of 0.8-1.2mm and 1.8-2.0mm into the upper layer and the lower layer in the grinding cavity, and continuously adding 400-mesh barium sulfate slurry with the solid content of 40% into the grinding cavity;
2. opening a speed reducer switch, grinding the barium sulfate until the particle size D100 is approximately equal to 3.0 mu m, and recording the grinding time;
3. opening a circulating pump switch, a first vibrator switch and a second vibrator switch in the screening device, and respectively driving grinding slurry into a final product storage box and a particle storage cavity with undersize particle size;
4. opening a fourth spherical valve and a fifth spherical valve to respectively collect a finished product (sample 2 in the embodiment) and the fine particles, and closing the fourth spherical valve and the fifth spherical valve after the collection is finished;
5. and opening the second spherical valve and the third spherical valve, flushing back the grinding cavity which cannot enter the screening device by using a small amount of water, continuously grinding, and continuously feeding new grinding slurry from the sample inlet.
Comparative example 1
1. Removing the screen with the aperture of 0.6mm in the grinding cavity, mixing and adding 100kg of zirconium beads with the particle sizes of 0.8-1.2mm and 2.0-2.5mm into the grinding cavity, and continuously adding 400-mesh calcium carbonate slurry with the solid content of 50% into the grinding cavity;
2. turning on a speed reducer switch, grinding the calcium carbonate until the particle size D100 is approximately equal to 3.0 μm, and recording the grinding time;
3. opening a circulating pump switch and a first vibrator switch and a second vibrator switch in the screening device, and respectively driving the grinding slurry into a final product storage box and a particle storage cavity with an undersize particle size;
4. opening the fourth ball valve and the fifth ball valve to collect finished products (samples in comparative example 1) and fine particles respectively, and closing the fourth ball valve and the fifth ball valve after the collection is finished;
5. and opening the second spherical valve and the third spherical valve, flushing back the grinding cavity which cannot enter the screening device by using a small amount of water, continuously grinding, and continuously feeding new grinding slurry from the sample inlet.
Comparative example 2
1. Removing the screen with the aperture of 0.6mm in the grinding cavity, mixing and adding 100kg of zirconium beads with the particle size of 0.8-1.2mm and the particle size of 2.0-2.5mm into the grinding cavity, and continuously adding 400-mesh calcium carbonate slurry with the solid content of 50% into the grinding cavity;
2. turning on a speed reducer switch, grinding the calcium carbonate until the particle size D100 is approximately equal to 3.0 μm, and recording the grinding time;
3. the first ball valve was opened and the abrasives were collected to obtain a sample of comparative example 2.
Comparative example 3
1. Removing the screen with the aperture of 0.6mm in the grinding cavity, mixing and adding 100kg of zirconium beads with the particle size of 0.8-1.2mm and the particle size of 1.8-2.0mm into the grinding cavity, and continuously adding 400-mesh calcium carbonate slurry with the solid content of 40% into the grinding cavity;
2. turning on a speed reducer switch, grinding the calcium carbonate until the particle size D100 is approximately equal to 3.0 μm, and recording the grinding time;
3. the first ball valve was opened and the millbase was collected to give a sample of comparative example 3.
Evaluation method of polishing effect:
1. energy consumption assessment
Energy consumption was evaluated mainly by measuring the amount of time and electricity consumed in grinding 2 tons of 400 mesh heavy calcium carbonate and barium sulfate to 5000 mesh (D100. Apprxeq.3.0 μm) using the methods of examples 1 and 2 and comparative examples 1, 2 and 3 described above.
2. Particle size distribution evaluation
The particle size distribution evaluation means that the finished products obtained by the methods of examples 1 and 2 and comparative examples 1, 2 and 3 were subjected to particle size and particle size distribution tests using a laser particle sizer.
And (3) testing results:
the results obtained by the above test method are shown in Table 1 and FIG. 3:
TABLE 1 results of sample testing
| Numbering | Time, min | Power consumption, degree | D50，μm | D100，μm |
| Example 1 | 60 | 255 | 0.868 | 2.932 |
| Example 2 | 70 | 286 | 0.884 | 2.973 |
| Comparative example 1 | 115 | 431 | 0.854 | 3.021 |
| Comparative example 2 | 100 | 405 | 0.474 | 2.987 |
| Comparative example 3 | 121 | 460 | 0.453 | 3.011 |
It can be seen from the data in table 1 that grinding 2 tons of heavy calcium carbonate with 400 meshes and barium sulfate to 5000 meshes has the least time and power consumption in examples 1 and 2, which is mainly due to the isolation of zirconium beads with different particle sizes, so that the effective collision times of the zirconium beads are increased, and the grinding efficiency is greatly improved. As can be seen from fig. 3 and 4, the particle size distributions of examples 1 and 2 and comparative example 1 using the sieving device are both monomodal, whereas comparative examples 2 and 3 are bimodal, mainly due to the absence of sieving of the milled sample.
Although the present description is described in terms of embodiments, not every embodiment includes only a single embodiment, and such description is for clarity only, and those skilled in the art should be able to integrate the description as a whole, and the embodiments can be appropriately combined to form other embodiments as will be understood by those skilled in the art.
Claims (8)
1. A water mill device for superfine inorganic non-metal powder is characterized by comprising a speed reducer, a sample inlet, a grinding cavity, a grinding rod, a first screen, a stirring paddle, a first spherical valve, a circulating pump, a second spherical valve, a screening device and a third spherical valve; the speed reducer is connected with the grinding rod and the stirring paddle through a rotating shaft; the upper left of the grinding cavity is provided with a sample inlet; the middle lower part of the grinding cavity is provided with a first screen; the bottom of the grinding cavity is provided with a first spherical valve; the right side of the grinding cavity is provided with a circulating pump; the right side of the circulating pump is provided with a second spherical valve; the third spherical valve is arranged in a circulating pipeline of the water mill device; the screening plant sets up in whole wet grinding device's rightmost end.
2. The apparatus of claim 1, wherein the reducer is a 220kw/h reducer.
3. The apparatus of claim 1, wherein the volume of the grinding chamber is 10m 3 A grinding chamber.
4. The apparatus of claim 1, wherein the first screen has a diameter of 0.4-0.6 mm.
5. The apparatus of claim 1, wherein the paddles are anchor paddles.
6. The watermill device for the superfine inorganic non-metallic powder of claim 1, wherein the sieving device comprises a second screen, a first vibrator, a fourth ball valve, a storage box, a storage cavity, a third screen, a second vibrator, a fifth ball valve; the leftmost side of the screening device is provided with a second screen; a first vibrator is arranged on the first screen; the right side of the first vibrator is provided with a storage box; a fourth ball valve is arranged below the storage box; the right side of the storage box is provided with a third screen; a second vibrator is arranged on the third screen; the right side of the second vibrator is provided with a storage cavity; a fifth ball valve is arranged below the storage cavity.
7. The apparatus of claim 6, wherein the second screen has a diameter of 3-3.5 μm.
8. The apparatus of claim 6, wherein the third screen has a diameter of 0.2-0.3 μm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222103862.XU CN218132288U (en) | 2022-08-09 | 2022-08-09 | Water mill device of superfine inorganic non-metallic powder |
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| CN202222103862.XU CN218132288U (en) | 2022-08-09 | 2022-08-09 | Water mill device of superfine inorganic non-metallic powder |
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| CN202222103862.XU Active CN218132288U (en) | 2022-08-09 | 2022-08-09 | Water mill device of superfine inorganic non-metallic powder |
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