Sealing structure for feeding hole of ball milling equipment

Abstract

The invention discloses a sealing structure for a feeding port of ball milling equipment, and belongs to the technical field of ball milling equipment. The feeding port sealing structure of the ball milling equipment comprises a feeding port pipeline, a rotary sealing structure and a feeding port pipeline, one end of the material port pipeline is connected with one end of the feeding port pipeline in an embedded manner; and the rotary sealing structure is arranged at the joint of the material port pipeline and the feeding port pipeline. The rotary sealing structure is arranged at the joint of the material port pipeline and the material port pipeline, so that a sealing cavity is formed in the feeding port, dust leakage is prevented, the problem of dust overflow is solved, the whole rotary sealing structure is resistant to abrasion, and the technical problem that a sealing component of a feeding port of an existing ball mill is prone to abrasion is solved.

Description

Technical Field

[0001] This invention belongs to the technical field of ball mill equipment, and specifically relates to a sealing structure for the feed inlet of a ball mill equipment. Background Technology

[0002] In the glass manufacturing industry, ball mills are key equipment in the raw material preparation stage, primarily used to grind block glass raw materials into fine powder that meets process requirements. This equipment is widely used in various fields such as building materials, ceramics, and chemicals. Especially in glass production lines, its grinding efficiency and stability directly affect the quality of molten glass in subsequent melting processes and overall production efficiency. During ball mill operation, material continuously enters the drum through the feed inlet, colliding and rubbing against the grinding media under the rotation of the drum, thus completing the grinding process. While the sealing structure of the feed inlet is not a core grinding component in this system, it is crucial for ensuring the normal operation of the equipment and preventing dust spillage.

[0003] The sealing structures commonly used at the feed inlets of ball mills have revealed significant defects in practical use. Because the ball mill cylinder vibrates and slightly wobbles during operation, while the feed inlet is a fixed component, a flexible connection is necessary to achieve a seal. A common practice is to use sealing sleeves made of soft materials such as rubber or canvas. However, during long-term continuous operation, the powdery material continuously erodes and rubs against these soft connections, causing the materials to gradually wear down, thin, and even crack. Once gaps appear in the seal, not only will fine powder leak out during grinding, polluting the workshop environment, but the intake of external air can also disrupt the balance of the process airflow inside the mill, ultimately leading to decreased grinding efficiency and increased energy consumption.

[0004] To address the aforementioned issue of easily damaged seals, existing technologies have primarily employed several improvement measures. One approach is to select more wear-resistant flexible connection materials, such as composite fabrics lined with nylon or coated with polyurethane, to enhance wear resistance. Another common solution is to incorporate multi-layered seals in the structure, adding a labyrinthine sealing structure to the existing flexible connection to reduce the probability of dust escape by extending the leakage path.

[0005] However, these existing improvements still fail to completely solve the fundamental problems. While the application of wear-resistant materials extends the service life of flexible connections, it cannot completely eliminate wear and is generally costly. Multi-layer or labyrinth seal structures are often difficult to implement effectively in space-constrained feed inlet locations, increasing structural complexity and making daily maintenance and component replacement inconvenient. Adding replaceable liners reduces some maintenance costs, but the joint between the liner and the flexible connection body can become a new leakage point. Overall, existing technologies still lack an effective means to balance sealing reliability, wear resistance, and maintenance convenience, making it difficult to meet the glass industry's stringent requirements for long-term stable operation and environmentally friendly production of ball mills. Summary of the Invention

[0006] The purpose of this invention is to provide a sealing structure for the feed inlet of a ball mill, which solves the technical problem of easy wear of existing ball mill feed inlet sealing components.

[0007] To achieve the above objectives, the present invention employs the following technical solution: This invention discloses a sealing structure for the feed inlet of a ball mill, including a feed inlet pipe, a rotary sealing structure, and a feed outlet pipe; one end of the feed inlet pipe and one end of the feed outlet pipe are embeddedly connected; the rotary sealing structure is disposed at the connection between the feed inlet pipe and the feed outlet pipe.

[0008] Furthermore, the rotary sealing structure includes a bottom recess and a bushing clamp; the bottom recess is located on the outer periphery of the connection between the material inlet pipe and the feed inlet pipe, and the bushing clamp is located on the outer periphery of one end of the bottom recess near the feed inlet pipe and is bolted to the bottom recess.

[0009] Furthermore, a side retaining ring is also provided on the back of the bushing.

[0010] Furthermore, the bottom recess and the bushing clamping material are both polyurethane.

[0011] Furthermore, packing is also provided inside the bottom recess.

[0012] Furthermore, the packing includes a primary sealing packing and a secondary sealing packing; the secondary sealing packing is installed between the bushing clamp and the side retaining ring; The primary sealing packing is installed on the outer wall of the inlet pipe and between the gap where the bushing is pressed together to form a seal.

[0013] Furthermore, the inner wall of the feed inlet pipe is provided with several spiral feeding blades.

[0014] Furthermore, the spiral feed blades are made of stainless steel.

[0015] Furthermore, an inlet connection flange is provided at the other end of the feed inlet pipe.

[0016] Furthermore, the inner wall of the feed port pipe is coated with a wear-resistant coating.

[0017] Compared with the prior art, the present invention has the following beneficial effects: This invention discloses a sealing structure for the feed inlet of a ball mill. By setting a rotary sealing structure at the connection between the feed inlet pipes, a sealed cavity is formed inside the feed inlet to prevent dust leakage and solve the problem of dust overflow. Moreover, the entire rotary sealing structure is wear-resistant, solving the technical problem of easy wear of existing ball mill feed inlet sealing components.

[0018] Furthermore, the rotary seal structure consists of a bottom recess, a bushing clamp, a side retaining ring, and packing. A spiral feeding blade is installed in the feed inlet pipe. After the material exits the previous process, it needs to enter the ball mill and is transported through two pipes. The two pipes are interlocked with different diameters to achieve free powder transport and prevent wear during material transport. The bushing clamp creates a sealed cavity inside the feed inlet to prevent dust leakage. The side retaining ring is installed on the back of the bushing clamp, and the recess between them is fitted with packing, preventing dust from overflowing during feed inlet rotation and ensuring a tight seal. The bushing clamp bolts are used to adjust the pressure between the bushing and packing. By adjusting the rotation of the screw, the pressure between them can be changed, thereby adjusting the sealing effect. The seal between the two pipes is achieved through a double-layer seal, ensuring its effectiveness.

[0019] Furthermore, the overall sealing structure has a simple design and is easy to disassemble and assemble, ensuring convenience during maintenance. It can effectively prevent material from spilling during rotation, significantly improving sealing performance, reducing wear, and enhancing the stability and reliability of the equipment. Attached Figure Description

[0020] Figure 1 Schematic diagram of the sealing structure of the feed inlet of a ball mill. Figure 2 A schematic diagram of the specific structure of the sealing structure at the feed inlet of a ball mill. Figure 3 Here is a structural diagram of the feed inlet; Figure 4 This is a structural diagram of the feed inlet; Figure 5 This is a schematic diagram of the bottom concave platform structure; Figure 6 This is a schematic diagram of the clamping bushing structure; Figure 7 This is a schematic diagram of the packing structure; Wherein: 1-Inlet pipe; 2-Bottom recess; 3-Shaft sleeve clamping; 4-Inlet connecting flange; 5-Spiral feed blade; 6-Side retaining ring; 7-Secondary sealing packing; 8-Primary sealing packing; 9-Inlet pipe. Detailed Implementation

[0021] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0022] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0023] The present invention will now be described in further detail with reference to the accompanying drawings: See Figures 1-7 As shown, the present invention discloses a ball mill inlet sealing structure, which is simple to design and manufacture, provides a good seal, effectively prevents dust overflow, and improves the stability and reliability of the equipment. Specifically, it includes an inlet pipe and a rotating shaft sealing part.

[0024] The feed inlet pipe section includes a feed inlet pipe 1 and a feed inlet pipe 9. Feed inlet pipe 1 is the outlet pipe of the previous process equipment, and feed inlet pipe 9 is the feed inlet pipe of the ball mill equipment. Feed inlet pipe 1 conveys materials through a circular pipe, and the internal pipe coating material is made of wear-resistant material. Feed inlet pipe 1 is equipped with a mounting base for installing the bottom recess 2 of the sealing part. Feed inlet pipe 9 conveys materials into the ball mill through spiral blades 5. It is made of stainless steel, which has good corrosion resistance and strength. When the material comes out from the previous process, it needs to enter the ball mill and needs to be conveyed through two pipes. The two pipes are embedded with different diameters to achieve free conveying of powder and prevent wear caused during material conveying.

[0025] The rotary shaft sealing part mainly consists of a bottom recess 2, a bushing clamping 3, a side retaining ring 6, and packing. The bottom recess 2 and the bushing clamping 3 are made of polyurethane material, which has excellent elasticity and wear resistance. The bottom recess 2 is installed on the feed port pipe 1 and contains packing. Through the compression of the bushing clamping 3, a sealed cavity is formed inside the feed port to prevent dust leakage. The side retaining ring 6 is installed on the back of the bushing clamping 3. The recess 2 between the two is filled with packing, which prevents dust from overflowing during the rotation of the feed port, ensuring the sealing effect. The three bolts of the bushing clamping 3 are used to adjust the pressure between the bushing and the packing. The recess is fixed to the flange on the feed port pipe by bolts. The recess is provided with threaded holes, which allow the adjusting screw connected to the boss to change the packing pressure and gap between the two by rotating the adjusting screw, thereby adjusting the sealing effect. The seal between the two pipes is achieved through double sealing to ensure its sealing effect.

[0026] When the ball mill is running, the feed port pipe 1 remains stationary, while the feed inlet pipe 9 needs to rotate. During the rotation, the secondary sealing packing 7 will rotate with it. The packing is fixed by the side retaining ring 6 installed on the secondary sealing packing 2, and there is a rotation gap between the side retaining ring 6 and the feed port pipe 1.

[0027] The above content is only for illustrating the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made to the technical solution based on the technical concept proposed in this invention shall fall within the scope of protection of the claims of this invention.

Claims

1. A ball mill apparatus feed inlet seal structure, characterized by, It includes a feed port pipe (1), a rotary sealing structure and an inlet pipe (9); one end of the feed port pipe (1) and one end of the inlet pipe (9) are embeddedly connected; the rotary sealing structure is set at the connection between the feed port pipe (1) and the inlet pipe (9).

2. A seal for a feed inlet of a ball mill apparatus as claimed in claim 1, wherein, The rotary sealing structure includes a bottom recess (2) and a bushing clamp (3); the bottom recess (2) is located on the outer periphery of the connection between the feed port pipe (1) and the feed inlet pipe (9), and the bushing clamp (3) is located on the outer periphery of one end of the bottom recess (2) near the feed inlet pipe (9), and is bolted to the bottom recess (2).

3. A seal for a feed inlet of a ball mill apparatus as claimed in claim 2, wherein, The back of the bushing clamp (3) is also provided with a side retaining ring (6).

4. A seal for a feed inlet of a ball mill apparatus as claimed in claim 2, wherein, The bottom recess (2) and the bushing clamp (3) are both made of polyurethane.

5. A seal for a feed inlet of a ball mill apparatus as claimed in claim 2, wherein, The bottom recess (2) is also equipped with packing.

6. A seal for a feed inlet of a ball mill apparatus as claimed in claim 4, wherein, The packing includes a primary sealing packing (8) and a secondary sealing packing (7); the secondary sealing packing (7) is installed between the bushing clamp (3) and the side retaining ring (6); The primary sealing packing (8) is installed on the outer wall of the feed inlet pipe (9) and between the gap of the bushing compression (3) to form a seal.

7. A seal for a feed inlet of a ball mill apparatus as claimed in claim 1, wherein, The inner wall of the feed inlet pipe (9) is provided with several spiral feeding blades (5).

8. A seal for a feed inlet of a ball mill apparatus as claimed in claim 7, wherein, The spiral feeding blade (5) is made of stainless steel.

9. The ball mill feed inlet sealing structure according to claim 1, characterized in that, The other end of the feed inlet pipe (9) is also provided with a feed inlet connecting flange (4).

10. The ball mill inlet sealing structure according to claim 1, characterized in that, The inner wall of the feed port pipe (1) is coated with a wear-resistant coating.

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