CN220559455U - Grinding device for superfine slurry - Google Patents
Grinding device for superfine slurry Download PDFInfo
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- CN220559455U CN220559455U CN202322145633.9U CN202322145633U CN220559455U CN 220559455 U CN220559455 U CN 220559455U CN 202322145633 U CN202322145633 U CN 202322145633U CN 220559455 U CN220559455 U CN 220559455U
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- sand mill
- horizontal sand
- stirring shaft
- discharge
- grinding device
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- 238000000227 grinding Methods 0.000 title claims abstract description 33
- 239000002002 slurry Substances 0.000 title claims abstract description 15
- 239000004576 sand Substances 0.000 claims abstract description 68
- 238000003756 stirring Methods 0.000 claims abstract description 31
- 239000000463 material Substances 0.000 claims abstract description 28
- 239000002904 solvent Substances 0.000 claims abstract description 11
- 238000003860 storage Methods 0.000 claims abstract description 9
- 210000001503 joint Anatomy 0.000 claims abstract description 4
- 238000010009 beating Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 abstract description 9
- 238000002156 mixing Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000011295 pitch Substances 0.000 description 2
- 238000010977 unit operation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- Crushing And Grinding (AREA)
Abstract
The application belongs to the technical field of grinding equipment manufacturing, and particularly relates to a grinding device for superfine slurry, which comprises a storage bin, wherein a discharge hole of the storage bin is in butt joint with a feed hole of a feeder, the discharge hole of the feeder and a discharge hole of a solvent batching tank are both connected with a feed end of a pre-dispersing machine, and the discharge end of the pre-dispersing machine is connected with a feed end of a horizontal sand mill; a first stirring shaft is arranged in the horizontal sand mill, a plurality of rod pins are radially arranged on the circumferential surface of the first stirring shaft, the length of the rod pins on the first stirring shaft is gradually increased from the feed inlet end of the horizontal sand mill to the discharge outlet end of the horizontal sand mill, the included angle between the rod pins and the first stirring shaft is 82-85 degrees, and the opening direction of the included angle faces the discharge outlet of the horizontal sand mill; the problem of the solid-liquid mixing in-process material grind inadequately, the grinding chamber rear side utilization ratio of horizontal sand mill is low is solved.
Description
Technical Field
The application belongs to the technical field of grinding equipment manufacturing, and particularly relates to a grinding device for superfine slurry.
Background
Solid-liquid mixing is an important unit operation in the field of paint products, and at present, the solid-liquid dispersing unit operation generally comprises two processes, namely, mixing solid and liquid in a dispersing tank for pre-dispersing, and then, throwing the pre-dispersed materials into a horizontal sand mill for grinding and dispersing. The solid-liquid mixture spreads to the rear side by the pumped pressure and the collision with the grinding medium in the grinding cavity of the horizontal sand mill, and most of the mixture is ground at the front side of the cavity after entering the grinding cavity, so that the utilization rate of the rear side space is low.
Patent publication CN208356689U discloses a grinding device for preparing ultrafine slurry, wherein the secondary grinding device is a horizontal sand mill. The secondary grinding device adopts backward inclined grinding blades to enable materials to be pushed backwards, and the blocking phenomenon of an outlet filter screen still exists in the using process of the applicant.
Therefore, an improvement scheme is needed to solve the problem that the utilization rate of the rear side of the grinding cavity of the horizontal sand mill is low due to insufficient grinding of materials in the solid-liquid mixing process.
Disclosure of Invention
The utility model provides a shortcoming to prior art, adopts the mode that increases the cooperation stick round pin by the feed inlet end to the discharge gate end of horizontal sand mill step by step of the epaxial stick round pin of first (mixing) to setting up 82-85 between the stirring shaft of horizontal sand mill, has designed the grinder of superfine thick liquids, has solved the material and has ground inadequately in the solid-liquid mixing process, the problem that horizontal sand mill grinds chamber rear side utilization ratio is low.
In order to achieve the above purpose, the technical scheme of the application is as follows:
the grinding device for the superfine slurry comprises a feed bin, a feeding machine, a solvent batching tank, a pre-dispersing machine and a horizontal sand mill, wherein a discharge port of the feed bin is in butt joint with a feed port of the feeding machine, the discharge port of the feeding machine and the discharge port of the solvent batching tank are both connected with a feed end of the pre-dispersing machine through pipelines, and a discharge end of the pre-dispersing machine is connected with a feed end of the horizontal sand mill through a pipeline; the horizontal sand mill is internally provided with a first stirring shaft, the circumferential surface of the first stirring shaft is radially provided with a plurality of rod pins, the length of the rod pins on the first stirring shaft gradually increases from the feed inlet end of the horizontal sand mill to the discharge outlet end of the horizontal sand mill, the included angle between the rod pins and the first stirring shaft is 82-85 degrees, and the opening direction of the included angle faces the discharge outlet of the horizontal sand mill.
Preferably, the included angle between the rod pin and the first stirring shaft is sequentially arranged from the feed inlet end of the horizontal sand mill to the discharge outlet end of the horizontal sand mill from small to large.
Preferably, the pre-disperser is a horizontal disperser, and the length-diameter ratio of the pre-disperser is more than 15.
Preferably, a second stirring shaft is arranged in the pre-dispersing machine, two spiral blades are arranged on the second stirring shaft, the widths of the two spiral blades are unequal, and the spiral directions of the spiral blades are opposite.
Preferably, the pitches of the two helical blades are equal.
Preferably, the horizontal sand mill is provided with an auxiliary discharge port, and the pipeline of the auxiliary discharge port and the feed end of the standby tank is provided with the material returning pump; the horizontal sand mill is provided with a fine screen at the discharge port of the horizontal sand mill, the horizontal sand mill is provided with a coarse screen at the auxiliary discharge port, and the aperture of the coarse screen is larger than that of the fine screen.
Preferably, a first cut-off valve is arranged at a discharge hole of the storage bin, a second cut-off valve is arranged at a discharge hole of the solvent preparation tank, a feed inlet of a material beating pump is connected at a discharge hole of the pre-dispersing machine, a discharge hole of the material beating pump is connected with a feed inlet of the horizontal sand mill, a temperature sensor and a pressure sensor are arranged on the horizontal sand mill, a third cut-off valve is arranged at an auxiliary discharge hole, and the first cut-off valve, the second cut-off valve, the third cut-off valve, the feeder, the pre-dispersing machine, the material beating pump, the temperature sensor, the pressure sensor and the material returning pump are all connected with a PLC controller.
Compared with the prior art, the beneficial effects of this application are:
1. the application adopts the mode that the rod pin on the first stirring shaft is gradually increased from the feed inlet end of the horizontal sand mill to the discharge outlet end of the horizontal sand mill, and an included angle of 82-85 degrees is arranged between the rod pin and the first stirring shaft, so that the grinding device for superfine slurry is designed, and the problems that materials are insufficiently ground in the solid-liquid mixing process and the rear side of a grinding cavity of the horizontal sand mill is low in utilization rate are solved.
2. The utility model provides a horizontal sand mill rear side cavity (towards the one side of horizontal sand mill's discharge gate) high in the utilization ratio reduces screen cloth blocking phenomenon. Further, the pre-dispersing machine can improve the dispersing effect of materials. Still further, this application is provided with PLC control system, has improved the security of sand mill and the stability of material and has the advantage that grinds abundant, sand mill screen cloth is difficult for blockking up, system stability and degree of automation are high.
Drawings
Fig. 1 is a schematic structural diagram of the present application.
FIG. 2 is a schematic view of the flow of material in a partial region of a predispersion machine.
Fig. 3 is a schematic view of the arrangement of the included angle between the rod pin and the first stirring shaft in the horizontal sand mill.
Wherein, 1, a stock bin; 2. a feeding machine; 3. a solvent formulation tank; 4. a pre-disperser; 5. horizontal sand mill; 6. a bar pin; 7. a first stirring shaft; 8. a helical blade; 9. a second stirring shaft; 10. a return pump; 11. a standby tank; 12. an auxiliary discharge port; 13. fine screen; 14. coarse screen; 15. a first cut-off net; 16. a second cut-off net; 17. a material pump; 18. and a third cut-off web.
Detailed Description
As shown in fig. 1-3, the grinding device for the superfine slurry comprises a storage bin 1, a feeding machine 2, a solvent preparation tank 3, a pre-dispersing machine 4 and a horizontal sand mill 5, wherein a discharge port of the storage bin 1 is in butt joint with a feed port of the feeding machine 2, a discharge port of the feeding machine 2 and a discharge port of the solvent preparation tank 3 are both connected with a feed end of the pre-dispersing machine 4 through pipelines, and a discharge end of the pre-dispersing machine 4 is connected with a feed end of the horizontal sand mill 5 through a pipeline; a first stirring shaft 7 is arranged in the horizontal sand mill 5, a plurality of bar pins 6 are radially arranged on the circumferential surface of the first stirring shaft 7, the length of the bar pins 6 on the first stirring shaft 7 gradually increases from the feed inlet end of the horizontal sand mill 5 to the discharge outlet end of the horizontal sand mill 5, the included angle between the bar pins 6 and the first stirring shaft 7 is 82-85 degrees, as shown in fig. 2, the included angles between the bar pins 6 and the first stirring shaft 7 of the horizontal sand mill 5 are sequentially arranged from small to large along the material flow direction, namely, the included angle a1 < a2 < a3; the opening direction of the included angle faces to the discharge port of the horizontal sand mill 5. According to the kinetic energy formula, the larger the linear speed of the particles is, the larger the kinetic energy is, the larger the collision force between the particles is, and the collision force between the particles and the grinding cavity is, the grinding of the material on one side of the grinding cavity of the horizontal sand mill 5, which is close to the discharge port of the horizontal sand mill 5, is more sufficient, and the utilization rate of one side of the grinding cavity, which is close to the discharge port of the horizontal sand mill 5, can be improved.
Preferably, the predispersion machine 4 is a horizontal type disperser, and the aspect ratio of the predispersion machine 4 is more than 15 for full dispersion.
Preferably, a second stirring shaft 9 is arranged in the pre-dispersing machine 4, two spiral blades 8 are arranged on the second stirring shaft 9, and the widths of the two spiral blades 9 are unequal and the spiral directions are opposite. During pre-dispersion, the wider spiral blades 8 are external spirals to push the material backwards; the narrower helical blade 8 is an internal screw which pushes the material forward. Accordingly, turbulence is formed between the inner spiral and the outer spiral of the material, and the dispersing effect is improved.
Preferably, the pitch of both said helical blades 8 is equal.
Preferably, the horizontal sand mill 5 is provided with an auxiliary discharge port 12, and the return pump 10 is arranged on a pipeline between the auxiliary discharge port 12 and the feed end of the standby tank 11; the horizontal sand mill 5 is provided with a fine screen 13 at the discharge port of the horizontal sand mill 5, the horizontal sand mill 5 is provided with a coarse screen 14 at the auxiliary discharge port 12, and the aperture of the coarse screen 14 is larger than that of the fine screen 13. When the fine screen 13 is blocked, the horizontal sand mill 5 can be switched to the auxiliary discharge port 12 for discharging, the materials which are not ground are pumped into the return pump 10, and after the screen is cleaned, the materials which are conveyed into the standby tank 11 by the return pump 10 are pumped into the horizontal sand mill 5 for grinding.
Preferably, a first cut-off valve 15 is arranged at a discharge hole of the storage bin 1, a second cut-off valve 16 is arranged at a discharge hole of the solvent preparation tank 3, a discharge hole of the pre-dispersing machine 4 is connected with a feed hole of a material beating pump 17, a discharge hole of the material beating pump 17 is connected with a feed hole of the horizontal sand mill 5, a temperature sensor and a pressure sensor are arranged on the horizontal sand mill 5, a third cut-off valve 18 is arranged at a secondary discharge hole 12, and the first cut-off valve 15, the second cut-off valve 16, the third cut-off valve 18, the feeder 2, the pre-dispersing machine 4, the material beating pump 17, the temperature sensor, the pressure sensor and the return pump 10 are all connected with a PLC controller.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application and not for limiting the same; while the present application has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that modifications may be made to the specific embodiments of the present application or equivalents may be substituted for elements thereof; without departing from the spirit of the technical solutions of the present application, it shall be covered in the scope of the technical solutions claimed in the present application.
Claims (7)
1. The grinding device for the superfine slurry is characterized by comprising a storage bin (1), a feeder (2), a solvent batching tank (3), a pre-dispersing machine (4) and a horizontal sand mill (5), wherein a discharge port of the storage bin (1) is in butt joint with a feed port of the feeder (2), a discharge port of the feeder (2) and a discharge port of the solvent batching tank (3) are both connected with a feed end of the pre-dispersing machine (4) through pipelines, and a discharge end of the pre-dispersing machine (4) is connected with a feed end of the horizontal sand mill (5) through a pipeline; be equipped with first (7) stirring shaft in horizontal sand mill (5), radially be provided with a plurality of stick round pins (6) on the periphery of first (7) stirring shaft, the length of stick round pin (6) on first (7) stirring shaft increases step by step from the feed inlet end of horizontal sand mill (5) to the discharge gate end of horizontal sand mill (5), stick round pin (6) with the contained angle of first (7) stirring shaft is 82-85, the opening direction of contained angle orientation the discharge gate of horizontal sand mill (5).
2. The grinding device of superfine slurry according to claim 1, wherein the included angle between the rod pin (6) and the first stirring shaft (7) is sequentially arranged from the feed port end of the horizontal sand mill (5) to the discharge port end of the horizontal sand mill (5) from small to large.
3. The grinding device of superfine slurry according to claim 1 or 2, wherein the pre-disperser (4) is a horizontal disperser, and the aspect ratio of the pre-disperser (4) is more than 15.
4. A grinding device for superfine slurry according to claim 3, wherein a second stirring shaft (9) is arranged in the pre-dispersing machine (4), two spiral blades (8) are arranged on the second stirring shaft (9), and the widths of the two spiral blades (8) are unequal and the spiral directions are opposite.
5. Grinding device for ultra-fine slurries according to claim 4, characterized in that the pitch of both screw blades (8) is equal.
6. The grinding device of superfine slurry according to claim 5, further comprising a return pump (10) and a standby tank (11), wherein the horizontal sand mill (5) is provided with a secondary discharge port (12), and the return pump (10) is arranged on a pipeline between the secondary discharge port (12) and a feed end of the standby tank (11); the horizontal sand mill (5) is provided with a fine screen (13) at a discharge hole of the horizontal sand mill (5), the horizontal sand mill (5) is provided with a coarse screen (14) at an auxiliary discharge hole (12), and the aperture of the coarse screen (14) is larger than that of the fine screen (13).
7. The grinding device of superfine slurry according to claim 6, characterized in that a first cut-off valve (15) is arranged at a discharge hole of the storage bin (1), a second cut-off valve (16) is arranged at a discharge hole of the solvent distribution tank (3), a feed inlet of a material beating pump (17) is connected at a discharge hole of the pre-dispersing machine (4), a discharge hole of the material beating pump (17) is connected with a feed inlet of the horizontal sand mill (5), a temperature sensor and a pressure sensor are arranged on the horizontal sand mill (5), a third cut-off valve (18) is arranged at the auxiliary discharge hole (12), and the first cut-off valve (15), the second cut-off valve (16), the third cut-off valve (18), the feeding machine (2), the pre-dispersing machine (4), the material beating pump (17), the temperature sensor, the pressure sensor and the return pump (10) are all connected with a PLC controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322145633.9U CN220559455U (en) | 2023-08-10 | 2023-08-10 | Grinding device for superfine slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322145633.9U CN220559455U (en) | 2023-08-10 | 2023-08-10 | Grinding device for superfine slurry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220559455U true CN220559455U (en) | 2024-03-08 |
Family
ID=90093949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322145633.9U Active CN220559455U (en) | 2023-08-10 | 2023-08-10 | Grinding device for superfine slurry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220559455U (en) |
-
2023
- 2023-08-10 CN CN202322145633.9U patent/CN220559455U/en active Active
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