Powder sealing structure of spiral pipe of ball mill
Through the design of inner seal and balanced components, the combination of graphite sleeve and rubber sleeve is used to solve the problem of unstable sealing of the ball mill spiral pipe, achieving higher sealing and service life, ensuring equipment safety and stability.
Patent Information
- Application Number
- CN202421827059.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-07-31
AI Technical Summary
The traditional ball mill spiral tube sealing scheme has poor stability and is susceptible to material impact and wear, resulting in material leakage and affecting equipment stability and safety.
The design of inner seal and balanced components is adopted, including graphite sleeves and rubber sleeves, combined with shock absorbing springs, enhance sealing and alleviate vibration effects. Through the self-lubricity of graphite sleeves and the airtightness of rubber sleeves, the balance plates and sealing rings are combined to improve the sealing effect.
Effectively prevent powder leakage, improve sealing, extend the service life of the equipment, reduce wear risks, and ensure safe and stable operation of the equipment.
Smart Images
Figure CN223069604U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of manufacturing of sealing devices, in particular to a powder sealing structure of a spiral tube of a ball mill. Background Art
[0002] Common spiral tube sealing solutions in traditional ball mills mainly rely on direct physical contact between static and dynamic components to reduce or completely avoid physical leakage of materials. This technology usually uses soft packing to achieve sealing, which is widely popular because of its simple design and relatively low cost. However, the stability of this sealing method is not ideal and is easily affected by the impact and wear of materials. In many application scenarios, since the feed is in a dry state and the operating speed of the vibrating feeder is relatively slow, dust leakage is not likely to occur at the sealing part, so overly complex sealing structures often do not need to be considered in the feed pipe part of the ball mill. However, in the actual operation process of the ball mill, the situation is not so simple. The spiral tube of the ball mill will generate complex motion patterns including rotation and horizontal movement during operation, which may cause gaps at the connection, leading to the leakage of materials such as pulverized coal. Such leakage not only makes it difficult to maintain a stable negative pressure environment inside the machine, but also causes waste of resources, reduces the service life of the ball mill, and increases production costs. More importantly, improper sealing also brings potential risks to the safe and stable operation of the equipment and may even trigger more serious safety accidents. Therefore, for the sealing problem of the spiral tube of the ball mill, more reliable and efficient solutions need to be found to ensure the safe, stable and economic operation of the equipment.
[0003] In summary, to improve the service life of the ball mill and the operating safety of the equipment, we propose a powder sealing structure of a spiral tube of a ball mill. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a powder sealing structure of a spiral tube of a ball mill to solve the problems of poor stability of the sealing component and relatively low service life proposed in the above background.
[0005] To achieve the above purpose, the utility model provides the following technical solutions:
[0006] A powder sealing structure of a spiral tube of a ball mill, including a feed pipe, characterized in that: it includes a base and a sealing shell. The base is sleeved outside the feed pipe. A sealing shell is fixedly installed above the base. The base and the sealing shell form a sealed chamber. A sealing cabin is provided on the base. A conical sleeve is installed at the bottom of the sealing cabin. The conical sleeve is sleeved outside the feed pipe. A graphite sleeve is installed above the conical sleeve. A rubber sleeve is sleeved outside the graphite sleeve. A balance disk is installed above the rubber sleeve. The balance disk is located inside the sealed chamber.
[0007] Preferably, the base is fixedly installed on the outer shell of the ball mill.
[0008] Preferably, the graphite sleeve is sleeved on the feed pipe, and an annular groove is provided inside the rubber sleeve to increase the contact area of the graphite sleeve.
[0009] Preferably, the balance disk sleeve is sleeved on the outside of the feed pipe and is located inside the sealing chamber.
[0010] Preferably, the balance disk includes a pressing table and a disk body. The pressing table is pressed above the rubber sleeve, and a first sealing ring is sleeved outside the pressing table and is located inside the sealing cabin to ensure the airtightness of the device. The disk body is located inside the sealing shell, and a second sealing ring is installed between the disk body and the base to further enhance the sealing performance.
[0011] Preferably, a limiting groove is provided on the disk body, a spring is installed in the limiting groove, a positioning pile is provided inside the sealing shell, and the positioning pile is placed in the limiting groove and elastically cooperates with the spring.
[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0013] The present utility model adopts the design of an inner seal and a balance component, effectively preventing the powder leakage in the spiral pipe of the ball mill, improving the airtightness of the device. The graphite sleeve is used for sealing, and the graphite sleeve has self-lubricating properties, reducing the wear problem caused by the vibration of the spiral pipe itself. At the same time, the rubber sleeve sleeved outside the graphite sleeve also has good airtightness, which can further strengthen the sealing of the ball mill. In addition, the balance component is provided with a shock-absorbing spring, and a part of the space is reserved above the balance plate and the shell, and a shock-absorbing spring is installed, which can better alleviate the problem of insufficient airtightness of the device caused by the vibration of the spiral pipe and improve the service life of the device. Description of the Drawings
[0014] Figure 1 It is an elevation view of a powder sealing structure of a spiral pipe of a ball mill according to the present utility model
[0015] Figure 2 It is an exploded view of a powder sealing structure of a spiral pipe of a ball mill according to the present utility model
[0016] Figure 3 It is a sectional view of a powder sealing structure of a spiral pipe of a ball mill according to the present utility model
[0017] Figure 4 It is a schematic diagram of a balance component of a powder sealing structure of a spiral pipe of a ball mill according to the present utility model
[0018] In the figure:
[0019] 1. Base; 2. Feed pipe; 3. Sealing shell; 4. Balance disk; 5. Elastic sealing ring; 6. Rubber sleeve; 6-1. Annular groove; 7. Graphite sleeve; 8. Elastic sealing body; 9. Limiting groove; 10. Spring; 11. Sealing cabin; 12. Sealing ring; 13. Positioning pile Detailed implementation manner
[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art without creative work based on the embodiments in the present invention belong to the protection scope of the present invention.
[0021] Please refer to Figures 1-4 , the present invention provides a technical solution:
[0022] A spiral tube powder sealing structure of a ball mill, including a feed pipe, characterized in that: it includes a base and a sealing shell. The base is sleeved outside the feed pipe, and a sealing shell is fixedly installed above the base. The base and the sealing shell form a sealed chamber. A sealing cabin is provided on the base, a conical sleeve is installed at the bottom of the sealing cabin, the conical sleeve is sleeved outside the feed pipe, a graphite sleeve is installed above the conical sleeve, a rubber sleeve is sleeved outside the graphite sleeve, and a balance disk is installed above the rubber sleeve. The balance disk is located inside the sealed chamber.
[0023] The base is fixedly installed on the outer shell of the ball mill.
[0024] The graphite sleeve is sleeved on the feed pipe, and an annular groove is provided inside the rubber sleeve to increase the contact area of the graphite sleeve.
[0025] The balance disk is sleeved outside the feed pipe and is located inside the sealed chamber.
[0026] The balance disk includes a pressing table and a disk body. The pressing table is pressed above the rubber sleeve, and a first sealing ring is sleeved outside the pressing table and is located inside the sealing cabin to ensure the airtightness of the device. The disk body is located inside the sealing shell, and a second sealing ring is installed between the disk body and the base to further enhance the sealing performance.
[0027] Limiting grooves are provided on the disk body, springs are installed in the limiting grooves, positioning piles are provided inside the sealing shell, and the positioning piles are placed in the limiting grooves and are elastically matched with the springs.
Claims
1. A spiral tube powder sealing structure for a ball mill, comprising a feed pipe (2), characterized in that: It includes a base (1) and a sealing shell (3). The base (1) is sleeved outside the feed pipe (2). A sealing shell (3) is fixedly installed above the base (1). The base (1) and the sealing shell (3) form a sealed chamber. A sealing cabin (11) is provided on the base (1). A conical sleeve (8) is installed at the bottom of the sealing cabin (11). The conical sleeve (8) is sleeved outside the feed pipe (2). A graphite sleeve (7) is installed above the conical sleeve (8). A rubber sleeve (6) is sleeved outside the graphite sleeve (7). A balance disk (4) is installed above the rubber sleeve (6). The balance disk (4) is located inside the sealed chamber.
2. The spiral tube powder sealing structure of a ball mill according to claim 1, characterized in that: The base (1) is fixedly installed on the ball mill housing.
3. The powder sealing structure of the spiral tube of a ball mill according to claim 1, characterized in that: The graphite sleeve (7) is sleeved on the feed pipe (2). An annular groove (6-1) is provided inside the rubber sleeve (6) to increase the contact area of the graphite sleeve (7).
4. A spiral tube powder sealing structure of a ball mill according to claim 1, characterized in that: The balance disk (4) is sleeved outside the feed pipe (2) and is located inside the sealed chamber.
5. A spiral tube powder sealing structure of a ball mill according to claim 4, characterized in that: The balance disk (4) includes a pressing table (4-1) and a disk body (4-2). The pressing table (4-1) is pressed above the rubber sleeve (6). A first sealing ring (5) is sleeved outside the pressing table (4-1) and is located inside the sealing cabin (11) to ensure the airtightness of the device. The disk body (4-2) is located inside the sealing shell (3). A second sealing ring (12) is installed between the disk body (4-2) and the base (1) to further enhance the sealing performance.
6. The spiral tube powder sealing structure of a ball mill according to claim 5, characterized in that A limiting groove (9) is provided on the disk body (4-2). A spring (10) is installed in the limiting groove (9). A positioning pile (13) is provided inside the sealing shell (3). The positioning pile (13) is placed in the limiting groove (9) and is elastically matched with the spring (10).