Support rolls for wet scale breakers

Abstract

The invention discloses a supporting roller used for a wet type descaling mill. The supporting roller comprises shaft head bearings which are positioned at the two ends of a supporting roller, and a plurality of back lining bearings which are positioned between the shaft end bearings, wherein the outer side end surfaces, away from the back lining bearings, of the shaft head bearings are equipped with non-contact type sealing structures which have water resistance and are used for preventing water and slag scrap from entering the shaft head bearings through the outer side end surfaces of the shaft head bearings; and waterproof retaining rings are arranged between the back lining bearings and between the back lining bearings and the shaft head bearings, and are used for preventing water andslag scrap from entering the shaft head bearings and the back lining bearings through positions between the back lining bearings and between the back lining bearings and the shaft head bearings. The supporting roller prevents water and slag scrap from entering the shaft head bearings and the back lining bearings of the supporting roller, so that a great deal of water is prevented from entering theshaft head bearings and the back lining bearings to cause supporting roller stalling; and scale slag scrap is prevented from entering the shaft head bearings and the back lining bearings to cause bearing blocking, so that the service life of the supporting roller of the descaling mill is greatly prolonged.

Description

technical field [0001] The invention relates to the technical field of steel plate and strip production, in particular to a support roll for a wet scale breaker. Background technique [0002] In the production process of steel sheets and strips, the black coils annealed after hot rolling need to go through a scale breaker to remove the oxide scales on the black coils before cold rolling. There are generally two types of descaling methods: dry descaling and wet descaling. The dry scale breaking has the disadvantage that the dust is too large and the workshop environment is bad. Today, as the requirements for environmental protection are getting higher and higher, more and more wet scale breaking units will be used. The wet scale breaker bends the steel belt positively and negatively through the working rolls to break the scale attached to the steel belt, thereby improving the descaling efficiency of subsequent processes such as shot blasting and pickling. [0003] figure ...

AI Technical Summary

Problems solved by technology

[0009] In view of the above-mentioned technical problems existing in the prior art, the purpose of the present invention is mainly to solve the problem that the shaft head bearing and the backing bearing of the support roller of the wet scale breaker are easy to enter a large amount of water and are easily blocked by scale dregs. The rollers are improved to prevent water, scales, slag and other slag from entering the shaft head bearings and backing bearings of the backup rolls, avoiding lubrication failure of the backup rolls caused by a large amount of water entering the shaft head bearings and backing bearings of the backup rolls, and avoiding The shaft head bearing and backing bearing are stuck due to slag entering the shaft head bearing and backing bearing of the backup roll, thereby eliminating the friction damage and tension on the surface of the work roll and steel belt caused by the stoppage of the backup roll and work roll The defect that the service life is shortened due to the rapid friction of the rubber layer of the roller lining

Images