A mill discharge end grate

Abstract

The utility model discloses a ball mill discharge end lattice board, including support platform and ball mill cylinder and fixed installation in the two limit ring piece of support platform top, the ball mill cylinder rotation is connected on the inner side wall of two limit ring piece, both ends of ball mill cylinder are fixedly installed with the discharge lattice round board. The utility model discloses, under the interaction of support platform, ball mill cylinder, limit ring piece, discharge lattice round board and discharge mechanism, the discharge groove of discharge lattice round board is matched with the screening hole, and the qualified material is guided to export accurately, avoids the flow disorder and the retention, and guarantees the efficient separation of coarse and fine materials, the cooperation of concave sealing plate and limit material round board enhances the sealing, and the material leakage is reduced greatly, and each part cooperates and ensures the structure firm, and withstands the long -term vibration impact, and the whole design adapts the continuous production simultaneously, reduces the maintenance demand, improves equipment operation stability and efficiency, satisfies the requirement of industrial production to grinding quality and continuity.

Description

Technical Field

[0001] This utility model relates to the field of ball mill equipment technology, and in particular to a grate plate at the discharge end of a ball mill. Background Technology

[0002] In the material processing of mining, metallurgy, and building materials industries, ball mills play a crucial role in grinding lumpy materials into fine particles. The discharge end grate plate, a key component of the ball mill, directly participates in the material classification and discharge process. Installed at the end of the ball mill cylinder, it rotates synchronously with the cylinder, intercepting coarse particles that do not meet grinding requirements and returning them to the cylinder for further grinding. Simultaneously, its structure guides fine materials that meet particle size standards out of the mill. It is a vital element in ensuring the uniformity of ground product quality and improving equipment operating efficiency, and is widely used in industrial production scenarios such as ore crushing and cement clinker grinding.

[0003] The grate plate in a ball mill presents several challenges during rotation. First, incomplete separation of fine and coarse materials during discharge allows some substandard coarse material to mix into the qualified material stream, leading to fluctuations in product particle size and affecting subsequent processing quality. Second, improper design of the clearance between the grate plate and surrounding components causes relative friction due to vibration during operation, which not only exacerbates component wear but may also generate abnormal noise, shorten the overall service life of the equipment, and increase the manpower and time costs of frequent maintenance. Therefore, we propose a new grate plate design for the discharge end of a ball mill to address these issues. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings in the above-mentioned background technology and to propose a grate plate for the discharge end of a ball mill.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A ball mill discharge end grid plate includes a support platform and a ball mill cylinder, as well as two limiting ring blocks fixedly installed on the top of the support platform. The ball mill cylinder is rotatably connected to the inner sidewall of the two limiting ring blocks. Discharge grid circular plates are fixedly installed at both ends of the ball mill cylinder, and a discharge mechanism is provided on the outer sidewall of the discharge grid circular plate. The discharge mechanism includes a discharge trough and multiple screening holes that are interconnected on the outer wall of the discharge grid circular plate. A concave sealing plate is fixedly installed on the outer wall of the limiting ring block. A limiting circular plate extending into the discharge trough is fixedly installed on the inner wall of the concave sealing plate. A discharge port is provided on the outer wall of the concave sealing plate.

[0006] Preferably, a plurality of ribs arranged in a ring array are fixedly installed on the outer wall of the discharge grid circular plate.

[0007] Preferably, a discharge pipe communicating with the discharge port is fixedly installed on the outer wall of the concave sealing plate.

[0008] Preferably, the ball mill cylinder and the discharge grid plate are fixed together by a plurality of first bolts, and the limiting ring block and the concave sealing plate are fixed together by a plurality of second bolts.

[0009] Preferably, the ball mill cylinder, the limiting ring block, the discharge grid circular plate and the concave sealing plate are arranged coaxially, and the concave sealing plate and the limiting circular plate are arranged coaxially.

[0010] Preferably, the support platform and the limiting ring block are fixedly connected by a support plate.

[0011] The beneficial effects of this utility model are as follows: Through the interaction of the support platform, ball mill cylinder, limiting ring block, discharge grid plate, and discharge mechanism, the discharge trough of the discharge grid plate cooperates with the screening holes to accurately guide the discharge of qualified materials, avoiding chaotic flow and stagnation, and ensuring efficient separation of coarse and fine materials. The concave sealing plate cooperates with the limiting plate to enhance the seal and significantly reduce material leakage. All components work together to ensure structural stability and resist long-term vibration and impact. At the same time, the overall design is adapted to continuous production, reducing maintenance needs, improving equipment operation stability and efficiency, and meeting the requirements of industrial production for grinding quality and continuity. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a grate plate at the discharge end of a ball mill proposed in this utility model; Figure 2 This is a front view of the discharge grid circular plate in the discharge end grid plate of a ball mill according to the present invention; Figure 3 This is a front view of the discharge trough in the grate plate at the discharge end of a ball mill, as proposed in this utility model. Figure 4 This is a front view of a concave sealing plate in the grate plate at the discharge end of a ball mill, as proposed in this utility model.

[0013] In the diagram: 1. Support platform; 2. Ball mill cylinder; 3. Limiting ring block; 4. Discharge grid circular plate; 5. Discharge chute; 6. Screen hole; 7. Concave sealing plate; 8. Limiting circular plate; 9. Discharge port; 10. Rib; 11. Discharge pipe; 12. First bolt; 13. Second bolt; 14. Support plate. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0015] Reference Figure 1-4 A ball mill discharge end grid plate includes a support platform 1 and a ball mill cylinder 2, as well as two limiting ring blocks 3 fixedly installed on the top of the support platform 1. The ball mill cylinder 2 is rotatably connected to the inner side wall of the two limiting ring blocks 3. Discharge grid circular plates 4 are fixedly installed at both ends of the ball mill cylinder 2, and a discharge mechanism is provided on the outer side wall of the discharge grid circular plates 4. The discharge mechanism includes a discharge trough 5 and multiple screening holes 6 that are interconnected on the outer wall of the discharge grid circular plate 4. A concave sealing plate 7 is fixedly installed on the outer wall of the limiting ring block 3. A limiting circular plate 8 extending into the discharge trough 5 is fixedly installed on the inner wall of the concave sealing plate 7. A discharge port 9 is opened on the outer wall of the concave sealing plate 7.

[0016] To further explain, by cooperating with the discharge trough 5 of the discharge grid circular plate 4 and the screening hole 6, and combined with the material limiting circular plate 8 to guide the material flow, the material is discharged according to particle size; the concave sealing plate 7 and the material limiting circular plate 8 cooperate to form a closed discharge space to prevent material leakage and ensure that the discharge process proceeds in an orderly manner.

[0017] like Figure 1 and Figure 2 As shown, multiple reinforcing bars 10 arranged in a ring array are fixedly installed on the outer wall of the discharge grid circular plate 4.

[0018] To further explain, the annular array of ribs 10 on the outer side of the discharge grid circular plate 4 can enhance its structural strength, resist deformation caused by material impact, extend the service life of the discharge grid circular plate 4, and ensure long-term stable operation.

[0019] like Figure 1 As shown, a discharge pipe 11 connected to the discharge port 9 is fixedly installed on the outer wall of the concave sealing plate 7.

[0020] To elaborate further, this design provides a directional conveying channel for the discharged materials, facilitating subsequent collection or processing and reducing waste and pollution caused by material spillage.

[0021] like Figure 1 As shown, the ball mill cylinder 2 and the discharge grid circular plate 4 are fixedly connected by multiple first bolts 12, and the limiting ring block 3 and the concave sealing plate 7 are fixedly connected by multiple second bolts 13.

[0022] To further explain, the first bolt 12 secures the ball mill cylinder 2 to the discharge grid circular plate 4, and the second bolt 13 secures the limiting ring block 3 to the concave sealing plate 7, ensuring that all components are firmly connected, preventing loosening due to vibration during equipment operation, and improving the overall structural stability.

[0023] like Figure 1 and Figure 4As shown, the ball mill cylinder 2, the limiting ring block 3, the discharge grid circular plate 4 and the concave sealing plate 7 are arranged coaxially, and the concave sealing plate 7 and the limiting circular plate 8 are arranged coaxially.

[0024] To further explain, the coaxial arrangement of each component can ensure the concentricity of the ball mill cylinder 2 when it rotates, reduce the additional stress and wear caused by eccentricity, and at the same time make the material flow smoothly along the axial direction, improving the discharge efficiency and uniformity.

[0025] like Figure 1 As shown, the support platform 1 and the limiting ring block 3 are fixedly connected by the support plate 14.

[0026] To further explain, this design can enhance the support strength of the limiting ring block 3, ensure its stable bearing of the rotation of the ball mill cylinder 2, avoid structural deformation caused by uneven force, and ensure the safe operation of the equipment.

[0027] The functional principle of this utility model can be explained through the following operation methods: Install the support and limiting structure: Fix the support plate 14 at the preset position on the top of the support platform 1, ensuring that the support plate 14 is perpendicular to the surface of the support platform 1 and evenly distributed. Place the two limiting ring blocks 3 on the top of the support plate 14 respectively, adjust their positions so that they are parallel and the spacing is adapted to the length of the ball mill cylinder 2. Tightly connect the limiting ring blocks 3 to the support plate 14 with bolts, ensuring that the bottom of the limiting ring blocks 3 is completely in contact with the support plate 14 without shaking.

[0028] Install the ball mill cylinder 2 and the discharge grid plate 4: Hoist the ball mill cylinder 2 between the two limiting ring blocks 3, aligning the two ends of the cylinder with the inner walls of the limiting ring blocks 3 respectively. Slowly lower the cylinder, ensuring that the cylinder can rotate flexibly inside the limiting ring blocks 3 without jamming. Take out the discharge grid plate 4 and attach it to the two ends of the ball mill cylinder 2. Align the bolt holes of both, insert multiple first bolts 12 and tighten them in sequence, so that the discharge grid plate 4 is tightly attached to the end face of the cylinder with no gaps at the connection.

[0029] Install the concave sealing plate 7 and the limiting circular plate 8: Align the concave sealing plate 7 with the outer wall of the limiting ring block 3, and adjust the position so that the limiting circular plate 8 on the inner side of the concave sealing plate 7 just extends into the discharge groove 5 of the discharge grid circular plate 4, and the outer wall of the limiting circular plate 8 and the inner wall of the discharge groove 5 maintain an appropriate gap. Use multiple second bolts 13 to pass through the corresponding holes of the concave sealing plate 7 and the limiting ring block 3, and gradually tighten the bolts to ensure that the concave sealing plate 7 and the limiting ring block 3 are firmly connected. At the same time, check the coaxiality of each component to ensure that the axes of the ball mill cylinder 2, the limiting ring block 3, the discharge grid circular plate 4, the concave sealing plate 7 and the limiting circular plate 8 are coincident.

[0030] Install the discharge pipe 11: At the discharge port 9 on the outer side wall of the concave sealing plate 7, align one end of the discharge pipe 11 with the discharge port 9 and fix it by welding or bolt connection to ensure good sealing at the connection and no risk of material leakage. The other end should face the direction of material collection or subsequent processing equipment.

[0031] Start the equipment: Start the ball mill drive device to make the ball mill cylinder 2 rotate at a constant speed on the inner side wall of the two limiting ring blocks 3. After being ground, the material in the cylinder gradually moves towards the discharge grid circular plates 4 at both ends. The material that meets the particle size requirements enters the discharge trough 5 through the screen holes 6 on the discharge grid circular plate 4. Under the guidance of the limiting circular plate 8, it flows along the discharge trough 5 to the closed space formed by the concave sealing plate 7, and finally enters the discharge pipe 11 through the discharge port 9 and is transported to the subsequent processing stage.

[0032] Routine maintenance and inspection: After the machine is shut down periodically, first check the tightness of the first bolt 12 and the second bolt 13, and tighten any loose bolts; observe whether the screen holes 6 on the surface of the discharge grid plate 4 are blocked, and use special tools to clean the residual material in the holes.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A mill discharge end grate comprising: It includes a support platform (1) and a ball mill cylinder (2) and two limiting ring blocks (3) fixedly installed on the top of the support platform (1). The ball mill cylinder (2) is rotatably connected to the inner side wall of the two limiting ring blocks (3). Both ends of the ball mill cylinder (2) are fixedly installed with discharge grid circular plates (4). The outer side wall of the discharge grid circular plates (4) is provided with a discharge mechanism. The discharge mechanism includes a discharge trough (5) and multiple screening holes (6) that are interconnected on the outer wall of the discharge grid circular plate (4). A concave sealing plate (7) is fixedly installed on the outer wall of the limiting ring block (3). A limiting circular plate (8) extending into the discharge trough (5) is fixedly installed on the inner wall of the concave sealing plate (7). A discharge port (9) is opened on the outer wall of the concave sealing plate (7).

2. The ball mill discharge end grid plate according to claim 1, characterized in that, Multiple ribs (10) arranged in a ring array are fixedly installed on the outer wall of the discharge grid circular plate (4).

3. A grate for a ball mill discharge end as defined in claim 1, characterized in that The concave sealing plate (7) has a discharge pipe (11) that communicates with the discharge port (9) fixedly installed on its outer wall.

4. A grate for a ball mill discharge end according to claim 1, characterized in that The ball mill cylinder (2) and the discharge grid circular plate (4) are fixedly connected by a plurality of first bolts (12), and the limiting ring block (3) and the concave sealing plate (7) are fixedly connected by a plurality of second bolts (13).

5. A grate for a ball mill discharge end according to claim 1, characterized in that The ball mill cylinder (2), the limiting ring block (3), the discharge grid circular plate (4) and the concave sealing plate (7) are arranged coaxially, and the concave sealing plate (7) and the limiting circular plate (8) are arranged coaxially.

6. A grate for a ball mill discharge end according to claim 1, characterized in that The support platform (1) and the limiting ring block (3) are fixedly connected by a support plate (14).

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