Dynamic sealing structure for cooling roller

Abstract

The utility model relates to a dynamic seal structure for a cooling roller, which comprises a bearing seat, a locking sleeve, a shaft sleeve and a bearing, the bearing is arranged in the bearing seat and connected with the neck of the cooling roller, the shaft sleeve is matched with the neck of the cooling roller in outer diameter, one end of the shaft sleeve is contacted with one end face of the bearing, and the other end of the shaft sleeve is contacted with the end face of the neck of the cooling roller. The other end face of the bearing abuts against a locking sleeve, the locking sleeve is in threaded connection with the neck of the cooling roller, and the outer end face of the locking sleeve is fixedly connected with the end face of the cooling roller through a screw. A core part water through hole is formed in the core part of the cooling roller, a water through hole is formed in the bearing seat, and the water through hole is communicated with the core part water through hole. The utility model has the advantages that the dynamic sealing water supply function is realized, the sealing life is prolonged, the operation cycle of the cooling roller is prolonged, the light weight of the bearing seat is realized, the processing time of the bearing seat and the cooling roller is reduced, the production operation rate can be improved, the maintenance cost is reduced, and the water leakage amount of the roller is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing seats, in particular to a dynamic sealing structure for a cooling roll. Background Art

[0002] The cooling roll of a continuous casting machine needs to be supported by a bearing seat and also needs to be cooled by water. Especially for continuous casting rolls, rolling rolls, textile rolls, and conveyor rolls, the current water passing technology is usually achieved by installing a rotary joint on the roll.

[0003] It is found in actual use that this water passing structure form has deficiencies: 1. The end of the cooling roll needs to be designed with a rotary joint installation hole, increasing the processing man-hours; 2. To meet the precise installation of the rotary joint and the rapid replacement after the failure of the rotary joint, the bearing seat structure is complex, increasing the weight and processing man-hours of the bearing seat; 3. The operating life of the rotary joint is lower than the operating cycle of the cooling roll. After the premature failure of the rotary joint, a large amount of water leakage will occur, which is also one of the important factors reducing the life of the cooling roll; 4. Premature replacement of the cooling roll will significantly reduce the production operation rate and increase the maintenance cost. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a dynamic sealing structure for a cooling roll, which not only has the functions of a traditional bearing seat but also newly adds a dynamic sealing water passing function, cancels the installation of the rotary joint, improves the sealing life, and increases the operating cycle of the cooling roll.

[0005] To achieve the above purpose, the utility model is realized through the following technical solutions:

[0006] A dynamic sealing structure for a cooling roll includes a bearing seat, a locking sleeve, a shaft sleeve, and a bearing. The bearing is arranged in the bearing seat, the bearing is connected to the neck of the cooling roll, the shaft sleeve is matched with the outer diameter of the neck of the cooling roll, one end of the shaft sleeve contacts one end face of the bearing, and the other end contacts the end face of the neck of the cooling roll; the other end face of the bearing abuts against the locking sleeve, the locking sleeve is threadedly connected to the neck of the cooling roll, and the outer end face of the locking sleeve is fixedly connected to the end face of the cooling roll by screws; a core water passing hole is provided in the core of the cooling roll, and a water passing hole is provided in the bearing seat, and the water passing hole is communicated with the core water passing hole.

[0007] The bearing seat includes a body, an end cover, a dynamic sealing ring, a metal stacked ring, and an oil seal. The body and the end cover are fixedly connected by bolts. A water passing hole Ⅰ is provided in the body, and a water passing hole Ⅱ is provided in the end cover. One end of the water passing hole Ⅰ is communicated with an external pipeline, and the other end is communicated with the water passing hole Ⅱ. The water passing hole Ⅱ is communicated with the core water passing hole; the inner diameter of the body is matched with the outer diameter of the shaft sleeve, and a metal stacked ring and an oil seal are provided between the body and the shaft sleeve; the inner diameter of the end cover is matched with the outer diameter of the locking sleeve, and a dynamic sealing ring, a metal stacked ring, and an oil seal are provided between the end cover and the locking sleeve.

[0008] The water passing hole Ⅰ has a right-angled structure.

[0009] The number of dynamic sealing rings is 1 to 3.

[0010] The inner diameter of the bearing matches the outer diameter of the neck of the cooling roll; the outer diameter of the bearing matches the inner diameter of the bearing housing.

[0011] An O-ring seal is provided between the bushing and the outer diameter of the neck of the cooling roll.

[0012] The bearing housing is arranged at both ends of the cooling roll.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] In addition to having the functions of a traditional bearing housing, the present utility model also adds a dynamic sealing and water passing function, cancels the installation of a rotary joint, improves the sealing life, extends the operation cycle of the cooling roll, realizes the lightweight of the bearing housing, reduces the processing man-hours of the bearing housing and the cooling roll, can improve the production operation rate, reduce the maintenance cost, and reduce the water leakage of the roll. Description of the Drawings

[0015] Figure 1 is the front view of the present utility model.

[0016] Figure 2 is the left view of the present utility model.

[0017] Figure 3 is Figure 2 the sectional view along line A-A.

[0018] Figure 4 is the front view of the dynamic sealing structure for the cooling roll.

[0019] Figure 5 is Figure 4 the sectional view along line B-B.

[0020] Figure 6 is the front view of the bearing housing body.

[0021] Figure 7 is Figure 6 the sectional view along line C-C.

[0022] Figure 8 is the front view of the end cover.

[0023] Figure 9 is Figure 8 the sectional view along line D-D.

[0024] Figure 10 is the structural schematic diagram of the end cover.

[0025] Figure 11 is the structural schematic diagram of the body.

[0026] In the figure: 1 - cooling roller; 2 - bearing housing; 3 - locking sleeve; 4 - bushing; 5 - dynamic seal ring; 6 - metal stacked ring; 7 - oil seal; 8 - bearing; 9 - O-ring seal; 10 - bolt; 11 - screw; 12 - core water passage hole; 21 - body; 22 - end cover; 23 - water passage hole I; 24 - water passage hole II. Specific embodiments

[0027] The present utility model will be described in detail below in conjunction with the accompanying drawings of the specification, but it should be noted that the implementation of the present utility model is not limited to the following embodiments.

[0028] As Figures 1 to 11 shown, a dynamic seal structure for a cooling roller includes a bearing housing 2, a locking sleeve 3, a bushing 4, and a bearing 8. The bearing 8 is arranged inside the bearing housing 2. The outer diameter of the bearing 8 is matched with the inner diameter of the bearing housing 2, and the inner diameter of the bearing 8 is connected to the neck of the cooling roller 1. The bushing 4 is matched with the outer diameter of the neck of the cooling roller 1, and an O-ring seal 9 is provided between the bushing 4 and the outer diameter of the neck of the cooling roller 1. One end of the bushing 4 contacts one end face of the bearing 8, and the other end contacts the end face of the neck of the cooling roller 1; the other end face of the bearing 8 abuts against the locking sleeve 3. The locking sleeve 3 is threadedly connected to the neck of the cooling roller 1, and the outer end face of the locking sleeve 3 is fixedly connected to the end face of the cooling roller 1 by screws 11; a core water passage hole 12 is provided in the core of the cooling roller 1, and water passage holes (including water passage hole I 23 and water passage hole II 24) are provided in the bearing housing 2, and the water passage holes are communicated with the core water passage hole 12.

[0029] The bearing housing 2 includes a body, an end cover 22, a dynamic seal ring 5, a metal stacked ring 6, and an oil seal 7. The body and the end cover 22 are fixedly connected by bolts 10. A water passage hole I 23 is provided in the body, and the water passage hole I 23 is a right-angle structure. A water passage hole II 24 is provided on the end cover 22. One end of the water passage hole I 23 is communicated with an external pipeline, and the other end is communicated with the water passage hole II 24. The water passage hole II 24 is communicated with the core water passage hole 12; the inner diameter of the body is matched with the outer diameter of the bushing 4, and a metal stacked ring 6 and an oil seal 7 are provided between the body and the bushing 4, both of which play a sealing role; an annular groove for inlaying the metal stacked ring 6 and the oil seal 7 is provided in the body. The inner diameter of the end cover 22 is matched with the outer diameter of the locking sleeve 3, and a dynamic seal ring 5 (1 - 3 pieces), a metal stacked ring 6, and an oil seal 7 are provided between the end cover 22 and the locking sleeve 3. The dynamic seal ring 5 can be a Gleitring or other seal rings.

[0030] The bearing housing 2 supports the cooling roll 1 through the bearing 8. When the cooling roll 1 rotates, the external pipeline sends cooling water through the water passing hole Ⅰ 23 of the main body and the water passing hole Ⅱ 24 of the end cover 22 to the core water passing hole 12 located at the central axis of the cooling roll 1 to cool down the cooling roll 1. The cooling water flows out from the core water passing hole 12 to the other end of the cooling roll 1 and is transported to the outside of the cooling roll 1 through the water passing hole Ⅱ 24 of the end cover 22 and the water passing hole Ⅰ 23 of the main body installed at the other end of the cooling roll 1, without affecting the normal operation of the cooling roll 1.

[0031] In addition to the functions of the traditional bearing housing, the utility model also adds a dynamic sealing water passing function, cancels the installation of the rotary joint, improves the sealing life, extends the operation cycle of the cooling roll 1, realizes the light weight of the bearing housing, reduces the processing man-hours of the bearing housing and the cooling roll 1, can improve the production operation rate, reduce the maintenance cost, and reduce the water leakage of the roll.

[0032] The above is only the preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the utility model, according to the technical solution and the inventive concept of the utility model, makes equivalent substitutions or changes, and all should be covered within the protection scope of the utility model.

Claims

1. A dynamic sealing structure for a cooling roller, characterized in that: It includes a bearing seat, a locking sleeve, a shaft sleeve, and a bearing. The bearing is arranged in the bearing seat, the bearing is connected to the neck of the cooling roller, the shaft sleeve matches the outer diameter of the neck of the cooling roller, one end of the shaft sleeve contacts one end face of the bearing, and the other end contacts the end face of the neck of the cooling roller; the other end face of the bearing rests on the locking sleeve, the locking sleeve is threadedly connected to the neck of the cooling roller, and the outer end face of the locking sleeve is fixedly connected to the end face of the cooling roller by screws; the core of the cooling roller is provided with a core water hole, and a water hole is provided in the bearing seat, and the water hole is connected to the core water hole.

2. A dynamic sealing structure for a cooling roller according to claim 1, characterized in that: The bearing seat comprises a body, an end cover, a dynamic sealing ring, a metal stacking ring, and an oil seal. The body and the end cover are fixedly connected by bolts. A water hole I is provided in the body, and a water hole II is provided on the end cover. One end of the water hole I is connected to an external pipeline, and the other end is connected to the water hole II, and the water hole II is connected to the core water hole; the inner diameter of the body matches the outer diameter of the sleeve, and a metal stacking ring and an oil seal are provided between the body and the sleeve; the inner diameter of the end cover matches the outer diameter of the locking sleeve, and a dynamic sealing ring, a metal stacking ring and an oil seal are provided between the end cover and the locking sleeve.

3. A dynamic sealing structure for a cooling roller according to claim 2, characterized in that: The water through hole I is a right-angle structure.

4. A dynamic sealing structure for a cooling roller according to claim 2, characterized in that: The number of the dynamic sealing rings is 1 to 3.

5. A dynamic sealing structure for a cooling roller according to claim 1, characterized in that: The inner diameter of the bearing matches the outer diameter of the neck of the cooling roller; the outer diameter of the bearing matches the inner diameter of the bearing seat.

6. A dynamic sealing structure for a cooling roller according to claim 1, characterized in that: An O-type sealing ring is arranged between the shaft sleeve and the outer diameter of the neck of the cooling roller.

7. A dynamic sealing structure for a cooling roller according to claim 1, characterized in that: The bearing seats are arranged at both ends of the cooling roller.

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