Device for preventing materials at ore feeding end of ball mill from overflowing
By installing components such as nylon brushes and ore collecting rings at the ball mill feed inlet, the problem of material overflow from the ball mill was solved, resulting in improved production stability and equipment efficiency, while reducing maintenance and labor intensity.
Patent Information
- Application Number
- CN202422734553.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-11-11
AI Technical Summary
Material overflow at the feed end of the ball mill leads to reduced production efficiency, accelerated wear of the magnetic separator, increased production costs, and increased labor intensity.
A circular multi-layer nylon brush is installed at the feed inlet of the ball mill, combined with a circular ore collecting baffle and a guide plate to form a closed sealing trough. Square holes and horn holes are set in the sealing trough to achieve effective collection and recycling of materials.
It effectively prevents material spillage, improves production stability, extends the service life of the magnetic separator, increases equipment efficiency, and reduces maintenance costs and labor intensity.
Smart Images
Figure CN223530498U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of mechanical equipment technology, and in particular relates to a device for preventing material overflow at the feed end of a ball mill. Background Technology
[0002] An overflow ball mill consists of a horizontal cylindrical body, hollow inlet and outlet shafts and bearings, a discharge auger, and a discharge flange. The cylindrical body is a long cylinder made of steel plate and fixed with steel liners. Inside the cylinder are steel spherical grinding media. When iron ore of a certain particle size is crushed, it enters the ball mill cylinder through the hollow inlet shaft. As the ball mill cylinder rotates, the steel spherical grinding media, due to inertia, centrifugal force, and friction, adhere to the cylinder liner and are carried away by the cylinder. When carried to a certain height, they are thrown down due to their own gravity, and the falling grinding media, like projectiles, crush the material inside the cylinder.
[0003] Problem: During ball mill operation, iron ore of a certain particle size is mixed with the sediment from the hydrocyclone in the beneficiation process and the feed water. This mixture enters the ball mill cylinder through the feed end, where the steel ball grinding media grinds the iron ore, sediment, and feed water mixture to produce a material of a certain concentration. Due to a gap between the ball mill feed end and the feed pipe, some material overflows from the feed end as the ball mill rotates, flowing into the drainage ditch and being discharged into the beneficiation process. This reduces the ball mill's production capacity and causes excessive wear on the magnetic separator. Ultimately, this reduces production efficiency, increases production costs, and increases labor intensity. Summary of the Invention
[0004] The purpose of this invention is to provide a device to prevent material overflow at the feed end of a ball mill, solve the problem of controlling the feed rate of rare ore, avoid accidental shutdowns, and ensure a stable supply of ore for production.
[0005] The objective of this utility model is achieved through the following technical solution:
[0006] The present invention relates to a device for preventing material overflow at the feed end of a ball mill, characterized in that a circular multi-layer nylon brush is provided on the feed inlet of the ball mill, a circular ore collecting retainer is provided on the outer flange of the ball mill feed and forms a closed sealing groove, a guide plate is provided in the sealing groove, a square hole is opened directly above the feed pipe in the sealing groove, and a funnel-shaped collection port is provided on the square hole.
[0007] The circular ore receiving baffle is a circular ore receiving baffle with an inner edge made of Φ20mm steel plate.
[0008] The square hole is a square hole with a diameter of 100mm.
[0009] The guide plate is welded to the sealing groove at a 45-degree angle to the direction of ball mill rotation.
[0010] Advantages of this utility model:
[0011] This utility model's device for preventing material overflow at the feed end of a ball mill solves the production problem of preventing material overflow at the ball mill feed end, ensuring the ball mill's production time, extending the service life of the magnetic separator, improving equipment efficiency, reducing costs, and reducing the labor intensity of maintenance personnel. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation
[0013] The specific embodiments of this utility model are further described below with reference to the accompanying drawings.
[0014] like Figure 1 As shown, the present invention provides a device for preventing material overflow at the feed end of a ball mill. The device is characterized by having a circular multi-layered nylon brush 2 on the ball mill feed inlet 1, a circular ore-collecting retaining ring 3 on the ball mill feed outer flange 4 forming a closed sealing groove 5, a guide plate 6 inside the sealing groove 5, and a square hole directly above the feed pipe 8 inside the sealing groove 5, with a funnel-shaped collection port 7 located on this square hole.
[0015] The circular ore receiving baffle 3 is a circular ore receiving baffle with an inner edge made of Φ20mm steel plate.
[0016] The square hole is a square hole with a diameter of 100mm.
[0017] The guide plate 6 is welded to the sealing groove 5 at a 45-degree angle to the direction of ball mill rotation.
[0018] The present invention provides a device for preventing material overflow at the feed end of a ball mill, which adopts the following technical solution:
[0019] 1. During ball mill operation, the feed pipe 8 extending into the hollow shaft at the ball mill feed end has a certain gap with the ball mill feed end and is not concentric. A circular multi-layer nylon brush 2 is installed at the ball mill feed inlet 1. The density, elasticity, and flexibility of the bristles of the circular multi-layer nylon brush 2 are used to block the material overflowing from the gap at the ball mill feed end.
[0020] 2. On the outer end face of the ball mill feed flange 4, install a circular ore receiving retainer 3 made of Φ20mm steel plate with an inner edge to form a closed circular trough 5, so as to collect the overflow material from the ball mill and prevent the overflow material from being lost.
[0021] 3. A guide plate 6 is provided in the sealed trough 5 to move the overflow material collected in the sealed trough 5 formed by the circular collecting ring 3 upward in the direction of rotation of the ball mill.
[0022] 4. A square hole with a diameter of 100mm is opened directly above the feed pipe 8, which is placed in the sealed groove 5 formed by the circular receiving baffle ring 3. A funnel-shaped collection port 7 of a certain size is made above the circular hole as the material recovery port, so as to collect and recover the material that the guide plate 6 moves upward with the ball mill into the feed pipe 8 and re-enter the ball mill for grinding.
[0023] This utility model's device for preventing material overflow at the feed end of a ball mill solves the production problem of preventing material overflow at the ball mill feed end, ensuring the ball mill's production time, extending the service life of the magnetic separator, improving equipment efficiency, reducing costs, and reducing the labor intensity of maintenance personnel.
Claims
1. A device for preventing material overflow at the feed end of a ball mill, characterized in that, A circular multi-layer nylon brush is provided at the feed inlet of the ball mill. A circular ore receiving retainer is provided on the outer flange of the ball mill feed, forming a closed sealing groove. A guide plate is provided in the sealing groove. A square hole is opened directly above the feed pipe in the sealing groove, and a funnel-shaped collection port is provided in this square hole.
2. The device for preventing material overflow at the feed end of a ball mill according to claim 1, characterized in that... The circular ore receiving baffle is a circular ore receiving baffle with an inner edge made of Φ20mm steel plate.
3. The device for preventing material overflow at the feed end of a ball mill according to claim 1, characterized in that... The square hole is a square hole with a diameter of 100mm.
4. The device for preventing material overflow at the feed end of a ball mill according to claim 1, characterized in that... The guide plate is welded to the sealing groove at a 45-degree angle to the direction of ball mill rotation.