CN219647666U - Dry crushing and grading collection system for boron carbide coarse powder - Google Patents
Dry crushing and grading collection system for boron carbide coarse powder Download PDFInfo
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- CN219647666U CN219647666U CN202321267486.6U CN202321267486U CN219647666U CN 219647666 U CN219647666 U CN 219647666U CN 202321267486 U CN202321267486 U CN 202321267486U CN 219647666 U CN219647666 U CN 219647666U
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- 229910052580 B4C Inorganic materials 0.000 title claims abstract description 19
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 239000000843 powder Substances 0.000 title claims abstract description 15
- 239000000428 dust Substances 0.000 claims abstract description 9
- 239000003638 chemical reducing agent Substances 0.000 claims description 7
- 238000009826 distribution Methods 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000009837 dry grinding Methods 0.000 claims 3
- 239000000463 material Substances 0.000 abstract description 13
- 238000000227 grinding Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000000498 ball milling Methods 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 19
- 230000008859 change Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000006061 abrasive grain Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000019771 cognition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009700 powder processing Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Abstract
The utility model belongs to the technical field of boron carbide production, and discloses a dry crushing, grading and collecting system for boron carbide coarse powder. The crushing and collecting system comprises a built-in screen dry type grinding machine, a first classifier, a second classifier, a cyclone separator and a dust remover which are connected in sequence. The dry crushing and grading collection system is totally closed, a built-in screen dry grinder not only solves the problem that the crushing process is finished jointly in two steps of traditional coarse crushing and wet ball milling, but also can be matched with a proper screen according to different final products, and a grader connected with the rear end is used for directly grading the products of the granularity section by setting different frequency parameters. The middle elastic ball ensures the problem of long screen processing time and blockage. The system improves the processing efficiency of the product, reduces the processing cost and greatly reduces the excessive crushing problem of materials.
Description
Technical Field
The utility model belongs to the technical field of boron carbide production, and particularly relates to a dry crushing, grading and collecting system for boron carbide coarse powder.
Background
Boron carbide is one of the hardest materials known. The material has high acid and alkali resistance, high temperature resistance, high chemical stability and light specific gravity, and is an ideal material in various industries. With the expansion of the application market and the improvement of the cognition, boron carbide is expected to become a star product in the future emerging market as a new material. However, how to avoid the phenomenon of overgrinding generated by grinding in the powder processing process of the high added value product is always a research problem.
The crushing modes for boron carbide powder in the industry are mainly divided into coarse crushing and fine crushing, wherein the coarse crushing is conventionally carried out by adopting a mode of jaw crushing and then wet ball mill crushing, the two devices of the crushing method can only intermittently crush, and all the crushed products of the jaw crushing are provided for the wet ball mill for wet crushing. The wet ball mill crushing belongs to a continuous crushing production process, partial crushed products cannot be selected, the phenomenon that crushed materials are excessively crushed cannot be solved, and the yield of products with each section of granularity is low.
The fine crushing of boron carbide powder in industry is carried out by air flow grinding, raymond crushing and the like, and the used raw materials need to be subjected to coarse crushing and then fine crushing processing. But the yield of the product with single granularity number is too low due to the influence of the yield of the coarse crushed product and the like, and the yield of the whole product is directly influenced.
The existing production process and equipment are used for solving the problems independently, and the maximum effect can not be produced simultaneously due to crushing, particle shape and yield. Due to the above drawbacks, the yield of rough crushing and solving the over-crushing phenomenon are key to improving the crushing processing defect.
Disclosure of Invention
Aiming at the defects of the existing crushing processing mode of the boron carbide powder, the utility model provides a dry crushing grading collection system for boron carbide coarse powder, which can obviously change the crushing efficiency, the yield and the control of abrasive grain shape of the powder in the crushing grading process, avoid the phenomenon of overgrinding and improve the quality of the finished product; the whole set of equipment has good tightness, can collect the finished products with various granularity of products by being provided with different screens, increases double-layer screens, increases the elastic ball in the interior, and changes the problem of screen blockage caused by long-time use. The full system obviously improves the labor intensity of workers, and has safe and clean working environment, simple structure, low failure rate, energy conservation and environmental protection.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
the dry crushing, classifying and collecting system for the boron carbide coarse powder comprises a built-in screen dry grinder 1, a first classifier 2, a second classifier 3, a cyclone 4 and a dust remover 5 which are sequentially connected, wherein the first classifier 2, the second classifier 3, the cyclone 4 and the dust remover 5 are all provided with discharge ports;
the built-in screen dry type grinding machine 1 comprises a main shaft 11, a feed hopper 12, a main machine side end cover 13, a main machine outer shield 14, a rubber elastic coupling 15, a speed reducer 16, an elastic pin coupling 17 and a motor 18;
the two ends of the main machine outer shield 14 are provided with main machine side end covers 13 to form a main body structure of the built-in screen dry grinder 1; the motor 18 is positioned outside a main machine side end cover 13 of the main machine outer shield 14 and is connected with the speed reducer 16 through an elastic pin coupler 17, the front end of the speed reducer 16 is connected with a rubber elastic coupler 15, and the rubber elastic coupler 15 is connected with the main shaft 11; the main shaft 11 penetrates through the main machine outer shield 14, and the main shaft 11 drives the main machine outer shield 14 to rotate; the feed hopper 12 is positioned on the other host side end cover 13, which is positioned above the main shaft 11;
the main structure of the built-in screen dry grinder 1 comprises a double-layer screen 6, bouncing balls 7, a lining plate external grating plate 8, a stepped distribution lining plate 9 and medium balls 10; the inside of the main body structure is sequentially provided with a double-layer screen 6, a grate plate 8 outside the lining plate and a stepped distribution lining plate 9 from outside to inside, a bouncing ball 7 is arranged between the double-layer screen 6, and a medium ball 10 is filled in a space surrounded by the stepped distribution lining plate 9.
The diameter of the bouncing ball 7 is 30mm.
The diameter of the medium ball 10 is 80-100mm.
The main engine outer shield 14 and the main engine side end cover 13 are closed shells made of steel plates and section steel.
The utility model has the beneficial effects that:
(1) Environmental protection: the system is totally closed, so that no dust pollution of the operation environment is ensured. The degree of mechanization is high, and the labor of workers is reduced.
(2) The phenomenon of powder overgrinding is reduced: the coarse crushing is performed, meanwhile, the products meeting the granularity are directly collected through screen mesh control adjustment, the grader can be adjusted according to frequency setting, and the crushed products with fine granularity can be directly graded into products with different granularity for different purposes. The excessive crushing of materials is greatly reduced, and the yield of the product with the final granularity of 100-50 microns after fine crushing and a single granularity section can reach more than 80 percent.
(3) The crushing process is completed jointly by two steps of traditional coarse crushing and wet ball milling, different frequency parameters can be set by a classifier connected with the rear end according to different final products, the granularity of the final product is controlled in the coarse crushing stage, the processing efficiency of the product is improved, and the processing cost is reduced. The double-layer screen is provided, the elastic ball is added, and the screen is not blocked after long-time use.
(4) The grain shape of the product is moderate: the grinding material produced by the system does not change the particle shape due to the change of the crushing mode, and the crushed particle shape is multi-prismatic, sharp in edge angle and small in sheet or strip shape, and has two indexes of grinding efficiency and abrasion ratio (service life) when being used for free grinding or concretion grinding tools.
Drawings
FIG. 1 is a schematic diagram of a dry crushing and classifying collection system according to the present utility model.
FIG. 2 is a schematic view of the crushing built-in screen dry grinder of the present utility model.
In the figure: 1, a screen dry grinder is arranged in the machine; 2 a first classifier; 3, a second classifier; 4 a cyclone separator; 5 a dust remover; 6 double-layer screen mesh; 7, bouncing the ball; 8, lining an external grating plate; 9, distributing lining plates in a step manner; 10 medium balls; 11 main shaft; a 12 feed hopper; 13 a host side end cap; 14 a host outer shield; 15 rubber elastic couplings; a 16 speed reducer; 17 elastic pin coupling; 18 motors.
Detailed Description
The following describes the embodiments of the present utility model further with reference to the drawings and technical schemes.
The raw material blocks of 15cm boron carbide to be processed are selected to enter the main body structure of the built-in screen dry grinder 1 through the feed hopper 12 for crushing processing. With the central rotation of the dry grinder 11 with the built-in screen, the medium balls 10 with the length of 80 cm to 100cm in the grinder are driven by the stepped distribution lining plate 9 to continuously perform the projectile motion under the action of friction force, and the boron carbide raw material blocks are crushed due to the impact of the moving medium balls 10. The inside of the main structure of the built-in screen dry grinder 1 is always in a negative pressure state, so that dust can be prevented from polluting the lower port for discharging. The crushed materials are discharged by the external grating plate 8 of the lining plate, the materials which enter the double-layer screen 6 to reach the requirements are discharged by the screen, the materials which are discharged outside the double-layer screen 6 can be adjusted to different classification wheel frequencies according to the first classifier 2 and the second classifier 3, and the materials respectively enter the first classifier 2, the second classifier 3, the cyclone separator 4 and the dust remover 5 for collection. The material larger than the mesh size is reground in the built-in screen dry grinder 1, so that the product granularity is better controlled, and the process is repeated. And adjusting process parameters to influence the processing yield and sand yield of the crushing and collecting system. The elastic ball is added in the middle of the double-layer screen 6, so that the problem that the screen is easy to block after long-time use of the equipment is solved.
Claims (4)
1. The dry crushing, classifying and collecting system for the boron carbide coarse powder is characterized by comprising a built-in screen dry grinder (1), a first classifier (2), a second classifier (3), a cyclone separator (4) and a dust remover (5) which are sequentially connected, wherein the first classifier (2), the second classifier (3), the cyclone separator (4) and the dust remover (5) are all provided with discharge holes;
the dry grinding machine (1) with the built-in screen comprises a main shaft (11), a feed hopper (12), a main machine side end cover (13), a main machine outer shield (14), a rubber elastic coupling (15), a speed reducer (16), an elastic pin coupling (17) and a motor (18);
two ends of the main machine outer shield (14) are provided with main machine side end covers (13) to form a main body structure of the dry grinding machine (1) with the built-in screen; the motor (18) is positioned outside a main machine side end cover (13) of the main machine outer shield (14), and is connected with the speed reducer (16) through an elastic pin coupler (17), the front end of the speed reducer (16) is connected with a rubber elastic coupler (15), and the rubber elastic coupler (15) is connected with the main shaft (11); the main shaft (11) penetrates through the main machine outer shield (14), and the main shaft (11) drives the main machine outer shield (14) to rotate; the feed hopper (12) is positioned on the other host side end cover (13) and is positioned above the main shaft (11);
the main structure of the dry grinding machine (1) with the built-in screen comprises a double-layer screen (6), bouncing balls (7), a lining plate external grating plate (8), a stepped distribution lining plate (9) and medium balls (10); the inside of the main body structure is sequentially provided with a double-layer screen (6), a lining plate external grating plate (8) and a stepped distribution lining plate (9) from outside to inside, a bouncing ball (7) is arranged between the double-layer screen (6), and a medium ball (10) is filled in a space surrounded by the stepped distribution lining plate (9).
2. The dry crushing and classifying collection system for boron carbide coarse powder according to claim 1, wherein the diameter of the bouncing ball (7) is 30mm.
3. A dry crush classifying collection system for boron carbide coarse powder according to claim 1, wherein the diameter of the medium balls (10) is 80-100mm.
4. The dry crushing and classifying collection system for boron carbide coarse powder according to claim 1, wherein the main machine outer cover (14) and the main machine side end cover (13) are closed shells made of steel plates and section steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321267486.6U CN219647666U (en) | 2023-05-24 | 2023-05-24 | Dry crushing and grading collection system for boron carbide coarse powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321267486.6U CN219647666U (en) | 2023-05-24 | 2023-05-24 | Dry crushing and grading collection system for boron carbide coarse powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219647666U true CN219647666U (en) | 2023-09-08 |
Family
ID=87877821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321267486.6U Active CN219647666U (en) | 2023-05-24 | 2023-05-24 | Dry crushing and grading collection system for boron carbide coarse powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219647666U (en) |
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2023
- 2023-05-24 CN CN202321267486.6U patent/CN219647666U/en active Active
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