RU2456105C1 - Seal device of turning roller support - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: sealing device has a bearing assembly and a nozzle with a circular longitudinal groove designed on the edge, located on the neck of the roller, a lid covering the bearing with a socket for installation of a sealing sleeve, which includes a housing, a radial sponge with a working edge, interacting with the radial surface of the nozzle. Reliable contact of the working edges with the surfaces of the nozzle when changing position of the rubbing surfaces of the roller relative to sponge cuff is ensured by the fact that the cuff is provided with a second radial sponge, which is connected with the end of the body on the outer diameter, and interacting with its working edge of the outer radial surface of a slot of the nozzle.

EFFECT: reliability improvement of seal of the bearing rolls.

1 dwg

Description

The invention relates to the field of rolling equipment, specifically to sealing devices of bearings of work rolls, and can be used in sealing devices of bearing bearings of machines and mechanisms.

Known as an analogue design of a sealing device for a support of a rolling roll, comprising a bearing cover with a seat for mounting a sealing collar, including a housing, radial and end lips with working edges interacting with the respective surfaces of the rolling roll (see RF patent No. 2169873, cl. 7 F16J 15/32, 12/12/1998).

This sealing device supports the rolling roll allows for reliable sealing of the friction surfaces at a certain fixed position of the end and radial surfaces of the roll.

A disadvantage of the known design of the sealing device is that when changing the position of the friction surfaces of the roll relative to the lip of the cuff, the latter are not able to provide reliable working contact with the end and radial surfaces of the roll with their working edges.

Of the known designs of sealing devices, the closest in technical essence (prototype) is a sealing device for a roll support, comprising a bearing assembly located on the roll neck and a nozzle with a groove in the end face, a cover covering the bearing with a socket for installing a sealing sleeve including a housing, and two jaws with working edges interacting with the surfaces of the nozzle (see RF patent No. 2389573, CL 7 B21B 31/02, 05.22.2009).

A disadvantage of the known design of the sealing device (prototype) is that, with significant movements of the roll relative to the cuff, the latter will have contact only with the radial surface of the nozzle, while a gap is formed between the end surface of the nozzle and the cuff, which significantly reduces the sealing properties of the seal.

The technical result of the proposed sealing device supporting the roll is to maintain the sealing properties of the cuff during axial movement of the roll, increasing the durability of the sealing device, increasing efficiency.

The technical result of the proposed sealing device of the support of the rolling roll is achieved by the fact that the cuff is equipped with a second radial sponge connected to the end face of the housing along the outer diameter and interacting with its working edge with the outer radial surface of the nozzle groove.

The claimed sealing device of the support of the rolling roll is illustrated in the drawing, which shows as an example the device supporting the rolling roll having significant axial displacements.

In the pillow 1 are installed: a bearing 2, sitting on the neck of the roll 3, on which the nozzle 4 is located with a longitudinal circular groove 5 made at the end; a cover 5 with a sealing collar 6 located therein, consisting of a housing 7, a radial lip 8 with a working edge 9 interacting with the radial surface 10 of the nozzle 4, and a second radial lip 11 connected to the end face of the housing 7 along the outer diameter and interacting with its working edge 12 with the outer radial surface of the groove 5 of the nozzle 4.

The operation of the device is as follows.

In the process, the sponge 11, being the first stage of the sealing assembly of the bearing 2, prevents mainly the scale contained in the coolant from entering the bearing cavity. The radial lip 8, in contact with its working edge 9 with the surface 10 of the nozzle 4, finally protects the bearing 2 from the penetration of coolant. During the installation of the roll 3 (especially on high-quality rolling mills), significant axial movements are possible relative to the pillow 1 with a cover 5 and a sealing collar 6. When the roll 3 is moved to one or the other extreme position, the jaws 8 and 11 will be in constant contact with their working edges 9 and 12 with the corresponding working surfaces of the nozzle 4, reliably protecting from the penetration of scale with coolant into the cavity of the bearing 2.

Thus, the proposed sealing device of the support of the rolling roll, comprising a bearing assembly located on the roll neck and a nozzle with a longitudinal circular groove made on the end face, a cover covering the bearing with a socket for installing a sealing collar including a housing, a radial sponge with a working edge interacting with a radial the surface of the nozzle, while the cuff is equipped with a second radial sponge connected to the end face of the housing along the outer diameter and interacting with its working edge with the outer radial surface of the groove of the nozzle, allows you to save the sealing properties of the cuff when changing the position of the rubbing surfaces, to increase the durability of the sealing device, to increase its effectiveness by ensuring guaranteed interaction of the working edges of the cuff with the surfaces of the sealing device.

Claims (1)

A sealing device for a support of a rolling roll, comprising a bearing assembly located on the neck of the roll and a nozzle with a longitudinal circular groove made on its end, a cover that covers the bearing, with a socket for installing a sealing collar including a housing and a radial lip with a working edge interacting with the radial surface of the nozzle characterized in that the cuff is provided with a second radial sponge connected to the end of the cuff body along its outer diameter having a working edge interacting with the outside second radial surface of the nozzle slot.