Superfine mill

Abstract

The utility model discloses a superfine mill, which relates to the technical field of crushing and grading and comprises a crushing shell, a crushing device and a grading device, an inner cavity of the crushing shell comprises a crushing area and a grading area, a crushing disc of the crushing device is rotatably arranged in the crushing area, and a grading wheel of the grading device is rotatably arranged in the grading area. The crushing shell is provided with a feeding port communicated with the crushing area, the grading device is provided with a discharging port communicated with the grading area, the superfine mill further comprises a plurality of crushing lining plates, a first pressing ring and a second pressing ring are arranged on the inner side wall of the crushing area at intervals, and the first pressing ring, the second pressing ring and the inner side wall of the crushing area jointly define an annular mounting groove; all the crushing lining plates are sequentially connected end to end and tightly arranged in the mounting groove, and a plurality of square hammer heads used for being matched with the crushing lining plates are arranged on the crushing disc. The superfine mill provided by the utility model is simple in structure, high in assembly efficiency and low in production and maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of crushing and grading technology, specifically to an ultrafine mill. Background Technology

[0002] Currently, as the requirements for material crushing quality become increasingly stringent, ultrafine grinding is generally used to process materials in order to reduce over-grinding, improve grinding efficiency, reduce energy consumption, and obtain materials of suitable particle size. Ultrafine grinding mainly utilizes a crushing device to crush materials, and the crushed materials are then discharged as fine particles through a classification device.

[0003] Existing ultrafine mills use an integral crushing liner structure, which needs to be fixed to the inner wall of the crushing shell with bolts. This structure is not only complex and heavy, making it difficult to manufacture, but also very difficult to position and assemble manually, resulting in very low assembly efficiency. Once a part of the crushing liner is damaged, the entire crushing liner needs to be replaced, leading to excessively high production and maintenance costs. Utility Model Content

[0004] In view of the above-mentioned defects in the existing technology, the present invention aims to provide an ultrafine mill that is not only simple in structure and has high assembly efficiency, but also has low production and maintenance costs.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] An ultrafine mill includes a grinding shell, a grinding device, and a classifying device. The inner cavity of the grinding shell includes a grinding zone and a classifying zone. The grinding disc of the grinding device is rotatably disposed in the grinding zone, and the classifying wheel of the classifying device is rotatably disposed in the classifying zone. The grinding shell is provided with a feed inlet communicating with the grinding zone, and the classifying device is provided with a discharge outlet communicating with the classifying zone. The ultrafine mill also includes multiple grinding liners. A first pressure ring and a second pressure ring are spaced apart on the inner sidewall of the grinding zone. The first pressure ring, the second pressure ring, and the inner sidewall of the grinding zone together form an annular mounting groove. All the grinding liners are sequentially and tightly arranged in the mounting groove. The grinding disc is provided with multiple square hammers for cooperating with the grinding liners.

[0007] The first pressure ring is sleeved on the inner side wall of the crushing zone and pressed against the inner bottom wall of the crushing zone by the crushing liner.

[0008] The second pressure ring is provided with a plurality of set screws, all of which are evenly arranged with the axis of the second pressure ring as the central axis, and all of which are pressed against the inner sidewall of the crushing zone.

[0009] The crushing liner has two protruding pressure platforms on one side and crushing teeth that cooperate with the square hammer on the other side. The two pressure platforms are installed in the mounting groove.

[0010] The square hammerheads are installed on both sides of the grinding disc. The square hammerheads protrude from the side surface of the grinding disc and extend beyond the edge of the grinding disc. The square hammerheads on both sides of the grinding disc are staggered.

[0011] The crushing device includes a crushing drive component, a crushing transmission mechanism, and a crushing disc. One end of the crushing transmission mechanism extends into the crushing zone and is connected to the crushing disc, while the other end of the crushing transmission mechanism is connected to the crushing drive component.

[0012] The grading device includes a grading housing, a grading drive mechanism, a grading transmission shaft, and a grading wheel. The grading housing is disposed on the crushing housing, and the discharge port is disposed on the grading housing. The grading transmission shaft is rotatably disposed inside the grading housing, with one end of the grading transmission shaft extending into the grading zone and connected to the grading wheel, and the other end of the grading transmission shaft extending out of the grading housing and connected to the grading drive mechanism.

[0013] The ultrafine mill also includes a feeding device, which includes a feeding pipe connected to the feeding port and a feeding hopper disposed on the feeding pipe. A first air regulating valve is disposed at the end of the feeding pipe.

[0014] The crushing shell is equipped with a second air regulating valve that is connected to the crushing zone.

[0015] By adopting the above technical solution, the beneficial effects of this utility model are:

[0016] The ultrafine mill provided by this utility model features a modular crushing liner structure, using multiple crushing liners assembled together. A first and second pressure ring are spaced apart on the inner wall of the crushing zone, forming a ring-shaped mounting groove. All crushing liners are then sequentially and tightly arranged within this groove. This design simplifies the structure of the crushing liners, facilitating manufacturing and reducing the difficulty of manual positioning and alignment, thus improving assembly efficiency. Furthermore, damaged liners can be repaired or replaced selectively, eliminating the need to replace all liners and significantly reducing production and maintenance costs. Additionally, the ultrafine mill utilizes a high-efficiency square hammer head in conjunction with the crushing liners, further enhancing material crushing efficiency. Attached Figure Description

[0017] Figure 1 This is a top view of the ultrafine mill of this utility model;

[0018] Figure 2 yes Figure 1 Sectional view of AA;

[0019] Figure 3 yes Figure 2 Enlarged view of section B;

[0020] Figure 4 yes Figure 2 Schematic diagram of the structure of the central crushing disc;

[0021] Figure 5 yes Figure 1 Schematic diagram of the feeder;

[0022] In the diagram: 1. Crushing shell; 11. Crushing liner; 110. Pressing table; 112. Crushing teeth; 12. First pressure ring; 13. Second pressure ring; 14. Top screw; 16. Second air regulating valve; 2. Crushing device; 21. Crushing disc; 22. Square hammer; 23. Crushing drive component; 24. Bearing seat; 25. Crushing drive shaft; 26. Coupling; 3. Grading device; 31. Grading wheel; 32. Discharge port; 33. Grading shell; 34. Grading drive shaft; 35. Grading drive component; 36. Belt drive mechanism; 4. Feeding device; 41. Feed pipe; 42. Feed hopper; 43. First air regulating valve; 5. Base. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0024] like Figures 1 to 5 As shown, this embodiment discloses an ultrafine mill, including a base 5, and a crushing shell 1, a crushing device 2, and a grading device 3 disposed on the base 5. The inner cavity of the crushing shell 1 includes a crushing zone and a grading zone. The crushing disc 21 of the crushing device 2 is rotatably disposed in the crushing zone, and the grading wheel 31 of the grading device 3 is rotatably disposed in the grading zone. The crushing shell 1 is provided with a feed inlet (connected to the feed pipe 41, not shown in the figure) that communicates with the crushing zone. The grading device 3 is provided with a discharge outlet 32 ​​that communicates with the grading zone. The ultrafine mill also includes multiple crushing liners 11. A first pressure ring 12 and a second pressure ring 13 are spaced apart on the inner sidewall of the crushing zone. The first pressure ring 12, the second pressure ring 13, and the inner sidewall of the crushing zone together form an annular mounting groove. All the crushing liners 11 are sequentially connected and tightly arranged in the mounting groove. The crushing disc 21 is provided with multiple square hammers 22 for cooperating with the crushing liners 11.

[0025] In this embodiment, the ultrafine mill uses a modular structure for the crushing liner 11, assembling multiple crushing liners 11. A first pressure ring 12 and a second pressure ring 13 are spaced apart on the inner wall of the crushing zone. These, along with the inner wall of the crushing zone, form a ring-shaped mounting groove. All crushing liners 11 are then sequentially and tightly arranged within this groove. This design simplifies the structure of the crushing liners 11, facilitating manufacturing and reducing the difficulty of manual positioning and assembly, thus improving assembly efficiency. Furthermore, damaged crushing liners 11 can be repaired or replaced selectively, eliminating the need to replace all liners, significantly reducing production and maintenance costs. Additionally, the ultrafine mill in this embodiment uses a square hammerhead 22 with high crushing efficiency, greatly improving material crushing efficiency.

[0026] In this embodiment, the first pressure ring 12 is sleeved on the inner wall of the crushing zone, and is pressed against the inner bottom wall of the crushing zone by the pressure of the second pressure ring 13 transmitted through the crushing liner 11. In practical applications, the first pressure ring 12 can also be locked to the inner wall of the crushing zone with screws, depending on the actual needs. This embodiment does not impose any restrictions on this.

[0027] In this embodiment, the second pressure ring 13 is provided with multiple set screws 14. All set screws 14 are evenly arranged around the axis of the second pressure ring 13, and all set screws 14 are pressed against the inner wall of the crushing zone. This arrangement facilitates the assembly and disassembly of the second pressure ring 13 and improves the assembly efficiency of the crushing liner 11. In practical applications, screws can also be used to lock the second pressure ring 13 to the inner wall of the crushing zone. The choice depends on the actual needs, and this embodiment does not impose any restrictions on this.

[0028] In this embodiment, the mounting groove is located on the inner wall of the crushing zone. Two pressure plates 110 protrude from one end of the crushing liner 11, and the other end of the crushing liner 11 has crushing teeth 112 that mate with the square hammer head 22. The two pressure plates 110 are pressed into the mounting groove by a first pressure ring 12 and a second pressure ring 13. This design improves the ease of installation of the crushing liner 11 and further enhances assembly efficiency.

[0029] In this embodiment, square hammerheads 22 are installed on both sides of the crushing disc 21. The square hammerheads 22 protrude from the side surface of the crushing disc 21 and extend beyond the edge of the crushing disc 21. The square hammerheads 22 on both sides of the crushing disc 21 are staggered. The installation of square hammerheads 22 on both sides of the crushing disc 21 greatly improves the crushing efficiency of materials.

[0030] The pulverizing device 2 in this embodiment includes a pulverizing drive 23, a pulverizing transmission mechanism, and a pulverizing disc 21. One end of the pulverizing transmission mechanism extends into the pulverizing zone and is connected to the pulverizing disc 21, while the other end of the pulverizing transmission mechanism is connected to the pulverizing drive 23.

[0031] Specifically, the crushing transmission mechanism includes a bearing housing 24 and a crushing transmission shaft 25 rotatably disposed within the bearing housing 24. One end of the crushing transmission shaft 25 extends out of the bearing housing 24 and is connected to the crushing drive component 23 via a coupling 26. The other end of the crushing transmission shaft 25 extends out of the bearing housing 24 and extends into the crushing zone, connecting to the crushing disc 21. In this embodiment, the crushing drive component 23 is preferably a motor. Driven by the motor, the crushing disc 21 drives the square hammer head 22 to rotate. The square hammer head 22 cooperates with the crushing teeth 112 of the crushing liner 11 to crush the material.

[0032] The grading device 3 in this embodiment includes a grading housing 33, a grading drive mechanism, a grading transmission shaft 34, and a grading wheel 31. The grading housing 33 is disposed on the crushing housing 1, and the discharge port 32 is disposed on the grading housing 33. The grading transmission shaft 34 is rotatably disposed inside the grading housing 33, and one end of the grading transmission shaft 34 extends into the grading zone and is connected to the grading wheel 31, while the other end of the grading transmission shaft 34 extends out of the grading housing 33 and is connected to the grading drive mechanism.

[0033] Specifically, the grading drive mechanism includes a grading drive component 35 and a belt drive mechanism 36 disposed on the grading housing 33. The belt drive mechanism 36 is connected between the power output end of the grading drive component 35 and the grading drive shaft 34. In this embodiment, the grading drive component 35 is preferably a motor. The motor drives the grading wheel 31 to rotate via the belt drive mechanism 36 and the grading drive shaft 34. The grading wheel 31 grades the pulverized material, and the material particles that meet the particle size requirements are discharged from the discharge port 32. The grading device 3 in this embodiment has the same structure and working principle as the classifier in the prior art. For details, please refer to the structure and working principle of the classifier in the prior art, which will not be elaborated here.

[0034] The ultrafine mill in this embodiment also includes a feeding device 4, which includes a feeding pipe 41 connected to the feeding port and a feeding hopper 42 disposed on the feeding pipe 41. A first air regulating valve 43 is disposed at the end of the feeding pipe 41. Under the suction force of the induced draft fan, the air intake of the ultrafine mill is adjusted by the first air regulating valve 43, thereby realizing the adjustment of the feed amount of the ultrafine mill to meet the usage requirements of different materials.

[0035] In this embodiment, the crushing housing 1 is provided with a second air regulating valve 16 that communicates with the crushing zone. By adjusting the air intake in the crushing housing 1 through the second air regulating valve 16, the airflow balance in the crushing housing 1 is ensured, resulting in more stable crushing and grading particle size.

[0036] The above describes a preferred embodiment of the ultrafine mill of this utility model in detail. Many other embodiments are not described here. In summary, the ultrafine mill provided by this utility model uses a split structure for the crushing liner 11, assembling multiple crushing liners 11. Simultaneously, a first pressure ring 12 and a second pressure ring 13 are spaced apart on the inner wall of the crushing zone. The first pressure ring 12, the second pressure ring 13, and the inner wall of the crushing zone together form an annular mounting groove. All crushing liners 11 are then sequentially and tightly arranged within this mounting groove. This not only simplifies the structure of the crushing liner 11, facilitating manufacturing, but also reduces the difficulty of manual positioning and alignment, improving the assembly efficiency of the crushing liner 11. Furthermore, when a crushing liner 11 is damaged, it can be repaired or replaced selectively, eliminating the need to replace all crushing liners 11, significantly reducing production and maintenance costs. Additionally, the ultrafine mill of this utility model uses a square hammerhead 22 with high crushing efficiency, greatly improving the crushing efficiency of materials.

[0037] This utility model is not limited to the specific embodiments described above. Any modifications made by those skilled in the art based on the above concept without creative effort are within the protection scope of this utility model.

Claims

1. An ultrafine mill, comprising a grinding shell, a grinding device, and a classifying device, wherein the inner cavity of the grinding shell includes a grinding zone and a classifying zone, the grinding disc of the grinding device is rotatably disposed within the grinding zone, the classifying wheel of the classifying device is rotatably disposed within the classifying zone, the grinding shell is provided with a feed inlet communicating with the grinding zone, and the classifying device is provided with a discharge outlet communicating with the classifying zone, characterized in that, The ultrafine mill also includes multiple crushing liners. A first pressure ring and a second pressure ring are spaced apart on the inner wall of the crushing zone. The first pressure ring, the second pressure ring, and the inner wall of the crushing zone together form an annular mounting groove. All the crushing liners are installed in the mounting groove in a close and sequential manner. The crushing disc is provided with multiple square hammers for cooperating with the crushing liners.

2. The ultra-fine mill of claim 1, wherein, The first pressure ring is sleeved on the inner side wall of the crushing zone and pressed against the inner bottom wall of the crushing zone by the crushing liner.

3. The ultra-fine grinder of claim 1, wherein, The second pressure ring is provided with a plurality of set screws, all of which are evenly arranged with the axis of the second pressure ring as the central axis, and all of which are pressed against the inner sidewall of the crushing zone.

4. The ultra-fine grinder of claim 1, wherein, The crushing liner has two protruding pressure platforms on one side, and crushing teeth that cooperate with the square hammer on the other side. The two pressure platforms are installed in the mounting groove.

5. The ultra-fine grinder of claim 1, wherein, The square hammerheads are installed on both sides of the pulverizing disc. The square hammerheads protrude from the side surface of the pulverizing disc and extend beyond the edge of the pulverizing disc. The square hammerheads on both sides of the pulverizing disc are staggered.

6. The ultra-fine grinder of claim 1, wherein, The pulverizing device includes a pulverizing drive component, a pulverizing transmission mechanism, and the pulverizing disc. One end of the pulverizing transmission mechanism extends into the pulverizing zone and is connected to the pulverizing disc, while the other end of the pulverizing transmission mechanism is connected to the pulverizing drive component.

7. The ultrafine mill according to claim 1, characterized in that, The grading device includes a grading housing, a grading drive mechanism, a grading transmission shaft, and a grading wheel. The grading housing is disposed on the crushing housing, and the discharge port is disposed on the grading housing. The grading transmission shaft is rotatably disposed inside the grading housing, with one end of the grading transmission shaft extending into the grading zone and connected to the grading wheel, and the other end of the grading transmission shaft extending out of the grading housing and connected to the grading drive mechanism.

8. An ultra-fine grinder according to any one of claims 1 to 7, characterized in that The ultrafine mill also includes a feeding device, which includes a feeding pipe connected to the feeding port and a feeding hopper disposed on the feeding pipe. A first air regulating valve is disposed at the end of the feeding pipe.

9. The ultra-fine mill of claim 8, wherein, The crushing shell is equipped with a second air regulating valve that is connected to the crushing zone.

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