Large tile oil seal of ball mill

Abstract

A large tile oil seal of a ball mill comprises a motor output shaft and a motor box body, and is characterized in that an inner sealing ring is fixedly installed on the motor output shaft, an outer sealing ring is rotatably installed on the inner sealing ring, a gap between skirt edges of the inner sealing ring and the outer sealing ring is a labyrinth groove, the labyrinth groove is communicated with an oil combing groove, the oil combing groove is communicated with an oil return pipe, and the oil return pipe is communicated with an oil pump. The oil return pipe is connected with an oil chamber in the motor box body through an oil pipe. Through dual protection of the inner sealing ring and the outer sealing ring, the overall sealing performance is effectively improved, lubricating oil is prevented from leaking, and meanwhile pollutants are prevented from entering. And due to the design of the oil return port, the inspection and maintenance of the lubricating oil become easier because the circulation and recovery of the lubricating oil are carried out in a closed system. Therefore, the operation process is simplified, and the efficiency of maintenance work is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical seals, in particular to a large tile seal for a ball mill. Background Art

[0002] In the mining, building materials and chemical industries, ball mills are key equipment for fine grinding after crushing materials. These industries have extremely high requirements for the reliability and maintenance costs of equipment. Therefore, how to improve the performance and economic benefits of ball mills through technological innovation has become an issue of continuous concern in the industry. Especially in the large-wall part of the ball mill, the design of its sealing device directly affects the sealing effect of the lubricating oil and the service life of the bearing, which in turn affects the stable operation and production efficiency of the entire equipment. In traditional technology, the design of the large-wall oil seal of the ball mill is mainly aimed at improving the problems existing in the traditional sealing method. Traditional sealing mechanisms, such as felt seals, although simple in structure, cannot be adjusted during long-term use. The long-term friction between the journal and the felt will cause the felt to age and harden, and lose its sealing effect, which cannot effectively solve the problem of oil leakage. This situation not only increases the frequency and cost of maintenance, but may also cause equipment failure due to poor lubrication. Utility Model Content

[0003] The purpose of the utility model is to solve the problem that the traditional seal cannot be adjusted during long-term use, and the long-term friction between the journal and the felt will cause the felt to age and harden, lose its sealing function, and thus cannot effectively solve the oil leakage problem. A sealing structure used in the large-wall oil seal of a ball mill is provided.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] The large bearing oil seal of the ball mill includes a motor output shaft and a motor housing, characterized in that the output shaft is provided with a sealing bearing and a sealing gland, the sealing bearing is fixedly connected to the top of the motor housing, the sealing bearing is provided with an oil guide chamber, an outer sealing ring is fixedly installed in the oil guide chamber, an inner sealing ring is installed on the inner wall of the outer sealing ring, the inner sealing ring is fixedly installed on the motor output shaft, the gap between the inner sealing ring and the outer sealing ring skirt is a labyrinth groove, the labyrinth groove is connected to the oil combing groove, the oil combing groove is connected to the oil return pipe, and the oil return pipe is connected to the oil chamber inside the motor housing through an oil pipe. An oil seal chamber is provided in the sealing bearing, an oil seal ring is fixedly installed in the oil seal chamber, and the sealing gland is fixedly connected to the sealing bearing.

[0006] Preferably, the sealing bearing is divided into an upper sealing bearing and a lower sealing bearing, both ends of the upper sealing bearing and the lower sealing bearing are provided with connecting seats, the connecting seats are provided with screw holes, and the upper sealing bearing and the lower sealing bearing are fixedly connected by bolts to form a sealing bearing.

[0007] Preferably, both ends of the sealing bearing are provided with flange rings 1, the flange rings 1 are provided with screw holes, and the sealing bearing is fixedly connected to the motor housing through the flange rings 1.

[0008] Preferably, a dustproof cabin is provided inside the sealing gland, a dustproof rubber ring is fixedly installed in the dustproof cabin, the sealing gland is provided with a flange ring 2, and the sealing gland is fixedly connected to the sealing bearing shell via the flange ring 2.

[0009] Preferably, the oil seal compartment is located behind the sealing gland, and the oil guide compartment is located behind the oil seal compartment.

[0010] Preferably, the inner sealing ring and the outer sealing ring skirt are both T-shaped.

[0011] Preferably, the oil combing groove is located at the bottom of the oil seal tank.

[0012] Preferably, the oil return pipe is installed on the end surface of the lower sealing bearing.

[0013] The utility model has the following beneficial effects:

[0014] The dual protection of the inner sealing ring and the outer sealing ring effectively improves the overall sealing performance, prevents lubricating oil leakage, and blocks the entry of pollutants.

[0015] The connecting design between the labyrinth groove and the oil comb groove further optimizes the sealing effect. This structure makes it more difficult for grease to leak out and for contaminants to enter.

[0016] The bolt-fastened sealing bearing and flange ring simplifies the installation and maintenance process, making the operation faster and more convenient.

[0017] The optimization of dustproof rubber ring and sealing structure can significantly reduce the contact between internal parts of the equipment and dust and pollutants in the external environment, thereby protecting the key components of the equipment from pollution and wear.

[0018] The design of the oil return port makes it easier to check and maintain the lubricating oil, because the circulation and recovery of the lubricating oil are all carried out in a closed system. This simplifies the operating process and improves the efficiency of maintenance work. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1A schematic diagram of an embodiment of the utility model;

[0021] Figure 2 This is a parts disassembly diagram of an embodiment of the utility model.

[0022] Figure 3 A cross-sectional view of an embodiment of the utility model;

[0023] Figure 4 A detailed cross-sectional view of an embodiment of the utility model;

[0024] In the figure: 1. motor output shaft; 2. motor housing; 3. inner sealing ring; 4. outer sealing ring; 5. labyrinth groove; 6. oil combing groove; 7. oil return pipe; 8. sealing bearing; 9. oil seal compartment; 10. oil seal ring; 11. sealing gland; 12. dustproof compartment; 13. dustproof rubber ring; 14. flange ring 1; 15. flange; 16. oil guide compartment; 17. upper sealing bearing; 18. lower sealing bearing; 19. connecting seat. DETAILED DESCRIPTION

[0025] The ball mill large bearing oil seal comprises a motor output shaft 1 and a motor housing 2, wherein the output shaft 1 is provided with a sealing bearing 8 and a sealing gland 11. The sealing bearing 8 is divided into an upper sealing bearing 17 and a lower sealing bearing 18, both ends of which are provided with a connecting seat 19, the connecting seat 19 is provided with a screw hole, and the upper sealing bearing 17 and the lower sealing bearing 18 are fixedly connected by bolts to form the sealing bearing 8.

[0026] Both ends of the sealing bearing bush 8 are provided with flange rings 14, and the flange rings 14 are provided with screw holes. The sealing bearing bush 8 is fixedly connected to the motor housing 2 through the flange rings 14. The sealing bearing bush 8 is provided with an oil guide chamber 16, and an outer sealing ring 4 is fixedly installed in the oil guide chamber 16. An inner sealing ring 3 is installed on the inner wall of the outer sealing ring 4, and the inner sealing ring 3 is fixedly installed on the motor output shaft 1.

[0027] The skirts of the inner sealing ring 3 and the outer sealing ring 4 are both T-shaped, and the gap between the skirts of the inner sealing ring 3 and the outer sealing ring 4 is a labyrinth groove 5. The labyrinth groove 5 is connected to the oil combing groove 6, and the oil combing groove 6 is connected to the oil return pipe 7. The oil return pipe 7 is connected to the oil chamber inside the motor case 2 through an oil pipe.

[0028] An oil seal compartment 9 is provided in the sealing bearing 8, and an oil seal ring 10 is fixedly installed in the oil seal compartment 9. A dustproof compartment 12 is provided in the sealing gland 11, and a dustproof rubber ring 13 is fixedly installed in the dustproof compartment 12. The sealing gland 11 is provided with a flange ring 20, and the sealing gland 11 is fixedly connected to the sealing bearing 8 through the flange ring 20.

[0029] The oil seal compartment 9 is located behind the sealing gland 11, and the oil guide compartment 16 is located behind the oil seal compartment 9. The combing oil groove 6 is located at the bottom of the oil seal compartment 9, and the oil return pipe 7 is installed on the end face of the lower sealing bearing bush 18.

Claims

1. A ball mill large-wafer oil seal, comprising a motor output shaft (1) and a motor housing (2), characterized in that Said The output shaft (1) is provided with a sealing bearing (8) and a sealing gland (11). The sealing bearing (8) is fixedly connected to the top of the motor housing (2). The sealing bearing (8) is provided with an oil guide chamber (16). An outer sealing ring (4) is fixedly installed in the oil guide chamber (16). An inner sealing ring (3) is installed on the inner wall of the outer sealing ring (4). The inner sealing ring (3) is fixedly installed on the motor output shaft (1). The gap between the skirts of the inner sealing ring (3) and the outer sealing ring (4) is a labyrinth groove (5). The labyrinth groove (5) is connected to an oil combing groove (6). The oil combing groove (6) is connected to an oil return pipe (7). The oil return pipe (7) is connected to an oil chamber inside the motor housing (2) through an oil pipe. An oil seal chamber (9) is provided in the sealing bearing (8). An oil seal ring (10) is fixedly installed in the oil seal chamber (9). The sealing gland (11) is fixedly connected to the sealing bearing (8).

2. The ball mill large tile oil seal according to claim 1, characterized in that: The sealing bearing (8) is divided into an upper sealing bearing (17) and a lower sealing bearing (18). Both ends of the upper sealing bearing (17) and the lower sealing bearing (18) are provided with connecting seats (19). The connecting seats (19) are provided with screw holes. The upper sealing bearing (17) and the lower sealing bearing (18) are fixedly connected by bolts to form the sealing bearing (8).

3. The ball mill large tile oil seal according to claim 1, characterized in that: Both ends of the sealing bearing bush (8) are provided with flange rings 1 (14), the flange rings 1 (14) are provided with screw holes, and the sealing bearing bush (8) is fixedly connected to the motor housing (2) via the flange rings 1 (14).

4. The ball mill large tile oil seal according to claim 1, characterized in that: A dustproof chamber (12) is provided in the sealing gland (11), a dustproof rubber ring (13) is fixedly installed in the dustproof chamber (12), and a second flange ring (20) is provided on the sealing gland (11). The sealing gland (11) is fixedly connected to the sealing bearing bush (8) via the second flange ring (20).

5. The ball mill large tile oil seal according to claim 1, characterized in that: The oil seal compartment (9) is located behind the sealing gland (11), and the oil guide compartment (16) is located behind the oil seal compartment (9).

6. The ball mill large tile oil seal according to claim 1, characterized in that: The skirts of the inner sealing ring (3) and the outer sealing ring (4) are both T-shaped.

7. The ball mill large tile oil seal according to claim 1, characterized in that: The oil combing groove (6) is located at the bottom of the oil seal cabin (9).

8. The large bearing oil seal for ball mill according to claim 1, characterized in that: The oil return pipe (7) is mounted on the end surface of the lower sealing bearing bush (18).

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