Ball mill feeding device with optimized structure

Abstract

The utility model discloses a ball mill feeding device with an optimized structure, which comprises a mechanical seal, a feeding sleeve and a feeding bushing, the feeding sleeve is arranged between a feeding pipe and the feeding bushing, the mechanical seal is a shaft seal device, the mechanical seal is arranged between the feeding pipe and the feeding sleeve, and the feeding bushing is arranged between the feeding pipe and the feeding sleeve. And the mechanical seal is fastened with the feeding bushing through a bolt after being connected with the feeding sleeve. According to the utility model, the independent design is adopted, the connection mode among all parts is improved, and the problems of slurry leakage, dust pollution and the like caused by easy leakage are solved; the feeding sleeve and the feeding lining are connected to the end cover after being fastened through the bolt, the feeding sleeve can be detached when the lining plate is replaced, the operation space of the manipulator is greatly increased, the workload is reduced, the efficiency is higher, the manipulator is safer, installation and maintenance are convenient, the safety is high, and the working intensity is reduced.

Description

Technical Field

[0001] The utility model relates to a ball mill feeding device with optimized structure, belonging to the technical field of ball mill structure design. Background Art

[0002] Ball mills are widely used in mining, chemical engineering, and smelting, primarily for grinding and crushing in industrial production. As the mill drum rotates, the grinding media, steel balls contained within, are lifted to a certain height by friction and centrifugal force, then dropped to the ground, impacting, squeezing, and grinding the material. The feed mechanism, the first step in mixing and grinding the material in the mill drum, impacts the quality of subsequent processes, and its structural design directly impacts grinding efficiency. Currently, commonly used mill feed mechanisms suffer from poor sealing, slurry leakage, and inconvenient liner replacement, which compromises efficiency. Liners, as the component in direct contact with the ore and steel balls, are subject to the most wear and tear, and conventional feed mechanisms have a small inlet, making liner replacement inconvenient. The common solution involves regular replacement of seals and liners, but the complexity of the sealing structure inevitably increases production costs. The small inlet size for liner replacement limits the manipulator's access space, making manual operation time-consuming and labor-intensive, and posing safety risks. Therefore, mill feed mechanism maintenance must consider both production economics and safety and reliability. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to provide a ball mill feeding device with optimized structure in view of the defects in the prior art, striving to improve the slurry leakage and the difficulty in replacing the liner while taking into account the production cost.

[0004] In order to solve this technical problem, the utility model provides a structurally optimized ball mill feeding device, including a mechanical seal, a feed sleeve, and a feed bushing. A feed sleeve is arranged between the feed pipe and the feed bushing. The mechanical seal is a shaft sealing device, and the mechanical seal is arranged between the feed pipe and the feed sleeve. After the mechanical seal is connected to the feed sleeve, it is fastened to the feed bushing by bolts.

[0005] The mechanical seal includes a welding plate, a spring seat, a stationary ring seat, a stationary ring friction ring, a dynamic ring friction ring, a dynamic ring seat, an O-ring and a spring; the welding plate and the stationary ring seat are spot welded to the feed pipe, the spring seat is placed between the welding plate and the stationary ring seat, and the welding plate is connected to the stationary ring seat by a hexagonal cylindrical head screw; the dynamic ring friction ring and the dynamic ring seat are inserted into the feed pipe, the dynamic ring seat is concentric with the stationary ring seat and has the same verticality, and the static ring friction ring and the dynamic ring friction ring are naturally tightly attached to ensure that they will not loosen during operation and cause a change in the force direction.

[0006] The feed sleeve includes a flange and a steel plate, which are welded together into one piece. The flange is provided with a plurality of threaded holes for connecting with a mechanical seal and a feed bushing.

[0007] The steel plate is made of Q235B steel plate.

[0008] The feed bushing is a conical structure, and a threaded hole is provided at the bottom thereof for connecting with the feed sleeve.

[0009] The feed bushing is made of cast steel.

[0010] Beneficial effects: The utility model adopts an independent design, improves the connection method between the various components, and is easy to install and maintain, safe and secure, saves time, and reduces work intensity. At the junction of the feeding device and the seal, it solves the problem of leakage, which in turn causes slurry leakage, dust pollution, and other problems. The mechanical seal is suitable for sealing various working conditions, various corrosive media and abrasive media, with a wide range of applications and good sealing performance; the feed sleeve and the feed bushing are fastened with bolts and connected to the end cover. The feed sleeve can be removed when the liner is replaced, which greatly increases the operating space of the manipulator, reduces manual workload, and is more efficient and safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural diagram of the utility model;

[0012] Figure 2 This is a schematic diagram of the structure of the mechanical seal of the utility model;

[0013] Figure 3 This is a structural diagram of the feed sleeve of the utility model;

[0014] Figure 4 This is a structural diagram of the feed bushing of the utility model.

[0015] In the figure: 1. Mechanical seal; 2. Feed sleeve; 3. Feed bushing; 4. Feed pipe; 11. Welding plate; 12. Spring seat; 13. Stationary ring seat; 14. Stationary ring friction ring; 15. Dynamic ring friction ring; 16. Dynamic ring seat; 17. O-ring; 18. Spring; 21. Flange; 22. Steel plate; 31. Threaded hole. DETAILED DESCRIPTION

[0016] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0017] like Figures 1-4As shown, the utility model provides a structurally optimized ball mill feeding device, including a mechanical seal 1, a feeding sleeve 2, and a feeding bushing 3. The feeding sleeve 2 is provided between the feeding pipe 4 and the feeding bushing 3. The mechanical seal 1 is a shaft sealing device. The mechanical seal 1 is provided between the feeding pipe 4 and the feeding sleeve 2. After the mechanical seal 1 is connected to the feeding sleeve 2, it is fastened to the feeding bushing 3 by bolts. After the installation is completed, as the mill rotates, the mechanical seal 1 is pressed against the two end faces of the static ring and the dynamic ring. Under the action of fluid pressure and spring elastic force, the two end faces automatically replenish the wear loss of the friction ring, achieving the effect of axial end face sealing and a long service life. When inspecting and replacing the liner, the feeding sleeve 2 can be directly removed together with the mechanical seal 1, which greatly increases the space available for the manipulator to operate the feed port, reduces manual workload, reduces safety risks, and improves work efficiency.

[0018] The mechanical seal 1 includes a welding plate 11, a spring seat 12, a stationary ring seat 13, a stationary ring friction ring 14, a dynamic ring friction ring 15, a dynamic ring seat 16, an O-ring 17 and a spring 18; the welding plate 11 and the stationary ring seat 13 are spot-welded to the feed pipe 4, and the spring seat 12 is placed between the welding plate 11 and the stationary ring seat 13. After the welding is cooled, the welding plate 1 and the stationary ring seat 3 are connected again with a hexagonal cylindrical head screw; the dynamic ring friction ring 15 and the dynamic ring seat 16 are inserted into the feed pipe 4, the dynamic ring seat 16 is concentric with the stationary ring seat 13 and has the same verticality, and the static ring friction ring 14 and the dynamic ring friction ring 15 are naturally tightly attached to ensure that they will not loosen during operation and cause the force direction to change.

[0019] The feed sleeve 2 includes a flange 21 and a steel plate 22. The steel plate 22 is made of Q235B steel plate. The steel plate 22 and the flange 21 are welded together. The flange 21 is provided with multiple threaded holes for connecting with the mechanical seal 1 and the feed bushing 3. The structure is stable and detachable, and can protect the hollow shaft from wear of the material.

[0020] The feed bushing 3 is made of cast steel and is usually conical in shape. A threaded hole 31 is provided at its bottom for connecting with the feed sleeve 2. This structural design helps to guide the material flow to the key parts of the mill, reduce mutual wear between equipment parts, reduce equipment maintenance costs, ensure efficient and stable operation of the equipment, and improve grinding efficiency.

[0021] During operation, the feed part rotates with the mill barrel. The ground object and the steel balls squeeze and collide with each other and fall directly onto the liner. The liner, as the part in direct contact with it, suffers the greatest loss. When the liner is inspected and replaced, the sealing device and the feed sleeve can be removed together. The size of the feed port is increased, and the operating space of the robot is greatly increased. While working efficiency is improved, the risk of manual operation is reduced, and safety is improved.

[0022] The utility model improves the structure of the feeding device from the perspectives of the sealing structure and the feeding bushing at the same time, which is convenient for installation and maintenance, safe and guaranteed, saves time and reduces work intensity; at the junction of the feeding device and the sealing component, it solves the problems of easy leakage, which in turn causes leakage of slurry, dust pollution and the like; the mechanical seal is suitable for sealing various working conditions, various corrosive media and abrasive media, has a wide range of applications and good sealing performance; the feeding sleeve and the feeding bushing are fastened with bolts and then connected to the end cover, and the feeding bushing can be removed when the liner is replaced, which greatly increases the operating space of the manipulator, reduces manual workload, and is more efficient and safer.

[0023] The above embodiments of the present invention are merely illustrative and not exclusive. All modifications within the scope of the present invention or equivalent to the scope of the present invention are encompassed by the present invention.

Claims

1. A ball mill feeding device with optimized structure, characterized by: The invention comprises a mechanical seal (1), a feed sleeve (2), and a feed bushing (3); the feed sleeve (2) is provided between the feed pipe (4) and the feed bushing (3); the mechanical seal (1) is a shaft sealing device; the mechanical seal (1) is provided between the feed pipe (4) and the feed sleeve (2); and after the mechanical seal (1) and the feed sleeve (2) are connected, they are fastened to the feed bushing (3) by bolts.

2. The structurally optimized ball mill feeding device according to claim 1, characterized in that: The mechanical seal (1) comprises a welding plate (11), a spring seat (12), a stationary ring seat (13), a stationary ring friction ring (14), a dynamic ring friction ring (15), a dynamic ring seat (16), an O-ring (17) and a spring (18); the welding plate (11) and the stationary ring seat (13) are spot-welded to the feed pipe (4); the spring seat (12) is placed between the welding plate (11) and the stationary ring seat (13); the welding plate (11) is connected to the stationary ring seat (13) via a hexagon socket head screw; the dynamic ring friction ring (15) and the dynamic ring seat (16) are inserted into the feed pipe (4); the dynamic ring seat (16) and the stationary ring seat (13) are concentric and have the same verticality; the stationary ring friction ring (14) and the dynamic ring friction ring (15) are naturally tightly attached to ensure that they will not loosen during operation and cause a change in the direction of force.

3. The structurally optimized ball mill feeding device according to claim 1, characterized in that: The feed sleeve (2) comprises a flange (21) and a steel plate (22), wherein the steel plate (22) and the flange (21) are welded together. The flange (21) is provided with a plurality of threaded holes for connecting with the mechanical seal (1) and the feed bushing (3).

4. The structurally optimized ball mill feeding device according to claim 3, characterized in that: The steel plate (22) is made of Q235B steel plate.

5. The structurally optimized ball mill feeding device according to claim 1, characterized in that: The feed bushing (3) is a conical structure, and a threaded hole (31) is provided at its bottom for connection with the feed sleeve (2).

6. The structurally optimized ball mill feeding device according to any one of claims 1 to 5, characterized in that: The feed bushing (3) is made of cast steel.

Images