ATOX vertical mill dam ring device

Abstract

The utility model discloses an ATOX vertical mill material blocking ring device, including millstone (1), the top of millstone (1) is equipped with the material blocking ring (2), the top of material blocking ring (2) is inclined to millstone (1) center, the bottom end inner diameter of material blocking ring (2) is same with millstone (1) bottom end inner diameter, the inner wall camber of material blocking ring (2) is same with millstone (1) inner wall camber, the body of material blocking ring (2) adopts annular structure, and its inboard wall is the inclined type design, and the inclined direction is toward millstone (1) center, can guide material to gather to millstone (1) center, reduces the edge run material, and material utilization rate is significantly promoted, can adjust the clearance between the body of material blocking ring (2) and millstone (1) simultaneously, realizes the fine adjustment of the clearance between material blocking ring (2) and mill roller, satisfies the clearance demand of different materials, and reasonable height adjustment function guarantees the material bed thickness to be in the best range, and mill roller grinding resistance reduces, and grinding efficiency is effectively improved, and product output also obtains the improvement.

Description

Technical Field

[0001] This utility model belongs to the field of vertical mill technology. Specifically, this utility model relates to an ATOX vertical mill baffle ring device. Background Technology

[0002] ATOX vertical mills are widely used in industries such as cement and non-metallic minerals. Their core working principle is to squeeze and grind materials through the relative movement of grinding rollers and grinding discs. The baffle ring is one of the key components to ensure the efficient grinding process. The baffle ring is installed on the edge of the grinding disc and its main function is to block the material on the grinding disc, so that the material forms a stable material bed on the grinding disc, providing effective grinding media for the grinding rollers, and at the same time preventing the material from overflowing from the edge of the grinding disc before it is fully ground (i.e., "material run-out").

[0003] A specification published on April 21, 2020, with application number 201921299856.8, discloses an adjustable vertical mill retaining ring, comprising multiple adjusting modules evenly distributed along the circumference of the mill disc. Each adjusting module is detachably fixed to the edge of the mill disc. Each adjusting module includes a radial adjusting plate, at least one layer of height adjusting plates attached to and stacked with the radial adjusting plate, and a pressure plate pressing against the top of the radial and height adjusting plates. Each adjusting module is detachably fixed to the edge of the mill disc by its respective bolt, and the mill disc has screw holes corresponding to each bolt. This invention effectively avoids the problem of the retaining ring moving towards the edge of the mill disc after adjustment due to the centrifugal force of the mill disc rotation and the extrusion force of the material. While ensuring radial dimension adjustment, it also possesses structural stability and practicality.

[0004] In existing technologies, the gap between the retaining ring and the grinding roller is relatively large (refer to existing structural analysis), causing material to easily escape through the gap. Insufficiently ground material is directly discharged, resulting in material waste, reduced grinding efficiency, and lower product yield. To solve the material leakage problem, some applications increase the height of the retaining ring. However, an excessively high retaining ring leads to an excessively thick material bed, requiring the grinding roller to overcome greater resistance, which reduces grinding efficiency and increases power consumption, hindering energy conservation. The gap between the retaining ring and the grinding roller cannot be flexibly adjusted according to material characteristics (such as hardness, moisture, and particle size), resulting in poor adaptability and difficulty in meeting the grinding requirements of different materials. These problems seriously affect the operational economy, stability, and applicability of ATOX vertical mills. Therefore, it is urgent to improve the retaining ring structure. Utility Model Content

[0005] The present invention aims to provide an ATOX vertical mill baffle ring device that can effectively improve grinding efficiency and output.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an ATOX vertical mill retaining ring device, including a grinding disc and a retaining ring disposed on the top of the grinding disc, wherein the top of the retaining ring is inclined toward the center of the grinding disc, the inner diameter of the bottom end of the retaining ring is the same as the inner diameter of the bottom end of the grinding disc, and the curvature of the inner wall of the retaining ring is the same as the curvature of the inner wall of the grinding disc.

[0007] An elastic washer is provided between the baffle ring and the grinding disc.

[0008] The outer edge of the baffle ring is provided with an annular adjusting seat, and the annular adjusting seat is provided with adjusting bolts connected to the grinding disc.

[0009] The adjusting bolts are evenly distributed around the circumference of the annular adjusting seat.

[0010] The top of the retaining ring is provided with a heightening ring.

[0011] The top of the baffle ring is provided with a sliding groove, and the bottom of the heightening ring is provided with a sliding plate that cooperates with the sliding groove.

[0012] The height-increasing ring comprises multiple interconnected arc-shaped height-increasing plates.

[0013] The height-increasing plate has inserts and slots on both sides.

[0014] The slide plate is provided with a locking plate in the middle, and the top of the baffle ring is provided with a groove connected to the slide groove. The shape of the groove is adapted to the locking plate.

[0015] The inner wall surface of the baffle ring is provided with a wear-resistant reinforcing layer.

[0016] The technical advantages of this invention are as follows: By setting an inwardly inclined annular retaining ring on the grinding disc, the material can be guided to gather towards the center of the grinding disc, reducing material runoff at the edges and effectively utilizing the grinding wheel. At the same time, the gap between the retaining ring body and the grinding disc can be adjusted to achieve fine-tuning of the gap between the retaining ring and the grinding roller, meeting the gap requirements of different materials. In addition, the retaining ring adopts an assembly structure, and by installing and removing retaining rings of different sizes, the overall height of the retaining ring can be adjusted. According to the requirements of the operating conditions, the retaining ring can be reasonably combined to achieve height adjustment and ensure a reasonable material bed thickness. Attached Figure Description

[0017] This manual includes the following figures, which illustrate the following: Figure 1 This is a schematic diagram of the structure of an ATOX vertical mill baffle ring device according to the present invention; Figure 2 for Figure 1 A schematic diagram of the heightening plate of a baffle ring device for an ATOX vertical mill; Figure 3 for Figure 1A schematic diagram of the slide groove and slot of a material retaining ring device for an ATOX vertical mill.

[0018] The markings in the diagram are: 1. Grinding disc; 2. Material retaining ring; 3. Washer; 4. Annular adjusting seat; 5. Adjusting bolt; 6. Heightening ring; 61. Heightening plate; 7. Slide groove; 8. Slide plate; 9. Locking plate; 10. Embedded groove; 11. Wear-resistant reinforcing layer; 12. Insert plate; 13. Slot. Detailed Implementation

[0019] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the utility model concept and technical solution, and to facilitate its implementation.

[0020] Please see Figure 1-3 An ATOX vertical mill retaining ring device includes a grinding disc 1 and a retaining ring 2 disposed on the top of the grinding disc 1. The top of the retaining ring 2 is inclined towards the center of the grinding disc 1, the inner diameter of the bottom end of the retaining ring 2 is the same as the inner diameter of the bottom end of the grinding disc 1, and the curvature of the inner wall of the retaining ring 2 is the same as the curvature of the inner wall of the grinding disc 1. The retaining ring 2 body adopts a ring structure, and its inner sidewall is designed with an inclined angle of 5°-10°, with the inclined direction facing the center of the grinding disc 1. This can guide the material to gather towards the center of the grinding disc 1, reduce material leakage at the edge, and significantly improve the material utilization rate.

[0021] An elastic washer 3 is provided between the retaining ring 2 and the grinding disc 1; this reduces the damage caused when installing the retaining ring 2, and the elastic washer 3 can better achieve the purpose of adjusting the gap between the retaining ring 2 and the grinding disc 1.

[0022] The outer edge of the retaining ring 2 is provided with an annular adjusting seat 4, and the annular adjusting seat 4 is provided with adjusting bolts 5 connected to the grinding disc 1; by rotating the adjusting bolts 5, the retaining ring 2 body can be pushed to move radially, thereby realizing the fine adjustment of the gap between the retaining ring 2 and the grinding roller to meet the gap requirements of different materials.

[0023] The adjusting bolts 5 are evenly distributed around the annular adjusting seat 4; multiple adjusting bolts 5 can make the installation of the annular adjusting seat 4 more level and prevent unevenness that could cause it to tilt.

[0024] The top of the retaining ring 2 is equipped with a height-increasing ring 6; the height of the retaining ring 2 can be adjusted to ensure a reasonable material bed thickness. The reasonable height adjustment function ensures that the material bed thickness is within the optimal range, the grinding resistance of the grinding roller is reduced, the grinding efficiency is effectively improved, and the product output is also increased.

[0025] The top of the retaining ring 2 is provided with a groove 7, and the bottom of the raising ring 6 is provided with a sliding plate 8 that cooperates with the groove 7; the positioning between the raising ring 6 and the retaining ring 2 is achieved by the cooperation of the sliding plate 8 and the groove 7.

[0026] The height-increasing ring 6 includes multiple interconnected arc-shaped height-increasing pieces 61; the multiple arc-shaped height-increasing pieces 61 are connected to form a new height-increasing ring 6, and the height-increasing ring 6 is decomposed into multiple height-increasing pieces 61 without the possibility of them getting stuck and unable to be installed, making the installation more convenient.

[0027] The height-increasing plate 61 has inserts 12 and slots 13 on both sides; by using the cooperation of the inserts 12 and slots 13, the height-increasing plates 61 are connected end to end, so that multiple height-increasing plates 61 can be connected together to form a ring structure, thereby increasing the height of the material stop.

[0028] The slide plate 8 has a locking plate 9 in the middle, and the top of the retaining ring 2 has a groove 10 connected to the slide groove 7. The shape of the groove 10 is adapted to the locking plate 9. The locking plate 9 is inserted into the groove 10, and then the raising ring 6 is rotated. At this time, the locking plate 9 enters the slide groove 7. The width of the locking plate 9 is greater than the width of the slide groove 7. This can fix the raising ring 6 on the retaining ring 2 and prevent the raising ring 6 from falling off the retaining ring 2.

[0029] The inner wall surface of the retaining ring 2 is provided with a wear-resistant reinforcing layer 11; the wear-resistant reinforcing layer 11 extends the service life of the retaining ring 2, reduces the number of maintenance and replacement costs, and selects high-strength wear-resistant steel, such as ZG35CrMo, to ensure structural strength and basic wear resistance.

[0030] Working principle: First, clean the mounting base on the edge of the grinding disc 1 to ensure the surface is flat and free of debris. Fix the retaining ring 2 to the preset position on the edge of the grinding disc 1 using adjusting bolts 5, ensuring that the bolt holes of the retaining ring 2 are concentric with the mounting holes. Select a reasonable combination of retaining rings 2 according to the characteristics of the target material, such as hardness and particle size, and adjust the overall height of the retaining rings 2. Select different height lifting rings 6 as needed. When installing the lifting rings 6, insert the locking plate 9 at the bottom of each lifting plate 61 into the groove 10. Then, connect the inserts 12 and slots 13 on both sides of each heightening piece 61 together to form a complete heightening ring 6. Rotate the heightening ring 6 to lock the locking plate 9 at the bottom of the heightening ring 6 into the slide groove 7 to fix the heightening ring 6. After installing the retaining ring 2, start the machine to confirm that the height of the retaining ring 2 is reasonable. After confirming that the height of the retaining ring 2 is reasonable through the above-mentioned start-up operation, weld and overlay the inner edge of the uppermost retaining ring 2 to improve the wear resistance of the retaining ring 2 and extend its service life.

[0031] The technical effects of this utility model are as follows: By setting an inwardly inclined annular retaining ring 2 on the grinding disc 1, the material can be guided to gather towards the center of the grinding disc 1, reducing material runoff at the edges and effectively utilizing the material. At the same time, the gap between the retaining ring 2 body and the grinding disc 1 can be adjusted to achieve fine adjustment of the gap between the retaining ring 2 and the grinding roller, meeting the gap requirements of different materials. In addition, the retaining ring 2 adopts an assembly structure. By installing and removing retaining rings 2 of different sizes, the overall height of the retaining ring 2 can be adjusted. According to the requirements of the operating conditions, the height of the retaining ring 2 can be adjusted to ensure a reasonable material bed thickness.

[0032] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. An ATOX vertical mill retaining ring device, comprising a grinding disc (1) and a retaining ring (2) disposed on the grinding disc (1), characterized in that: The top of the baffle ring (2) is inclined toward the center of the grinding disc (1), the bottom inner diameter of the baffle ring (2) is the same as the bottom inner diameter of the grinding disc (1), and the inner wall curvature of the baffle ring (2) is the same as the inner wall curvature of the grinding disc (1).

2. The ATOX vertical mill retaining ring device according to claim 1, characterized in that: An elastic washer (3) is provided between the baffle ring (2) and the grinding disc (1).

3. The ATOX vertical mill retaining ring device according to claim 2, characterized in that: The outer edge of the baffle ring (2) is provided with an annular adjustment seat (4), and the annular adjustment seat (4) is provided with an adjustment bolt (5) connected to the grinding disc (1).

4. The ATOX vertical mill retaining ring device according to claim 3, characterized in that: The adjusting bolts (5) are evenly distributed around the annular adjusting seat (4).

5. The ATOX vertical mill retaining ring device according to claim 1, characterized in that: The top of the baffle ring (2) is provided with a heightening ring (6).

6. The ATOX vertical mill retaining ring device according to claim 5, characterized in that: The top of the baffle ring (2) is provided with a groove (7), and the bottom of the heightening ring (6) is provided with a sliding plate (8) that cooperates with the groove (7).

7. An ATOX vertical mill retaining ring device according to claim 5 or 6, characterized in that: The height-increasing ring (6) includes multiple interconnected arc-shaped height-increasing plates (61).

8. The ATOX vertical mill retaining ring device according to claim 7, characterized in that: The height-increasing plate (61) has inserts (12) and slots (13) on both sides.

9. The ATOX vertical mill retaining ring device according to claim 6, characterized in that: The slide plate (8) is provided with a locking plate (9) in the middle, and the top of the baffle ring (2) is provided with a groove (10) connected to the slide groove (7). The shape of the groove (10) is adapted to the locking plate (9).

10. The ATOX vertical mill retaining ring device according to claim 1, characterized in that: The inner wall surface of the baffle ring (2) is provided with a wear-resistant reinforcing layer (11).

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