A side insert of a high-pressure roller mill roller sleeve and its replacement method

Abstract

The invention discloses a side insert of a roller shell of a high-pressure roller mill and a replacing method. The side insert is circle-shaped and is inserted in annular grooves respectively disposed at two side ends of the external surface of the roller shell along a circumference direction, and each annular groove is fit with radial section shape of the side insert; the side insert has a circle-shaped structure formed by splicing a plurality of inserts, and the adjacent inserts are bonded tightly by a bonding agent; and when the side insert needs to be replaced, the side insert is heated and the bonding agent loses viscosity, then an old side insert is replaced by a new side insert. The side insert has the advantages of being high in hardness, good in wear resistance, convenient to replace and long in service life, and also the side insert helps to alleviate wearing speed of a side shield and a lower side plate by giving indirect protection, and helps to prolong service life of the high-pressure roller mill.

Description

technical field [0001] The invention belongs to the technical field of high-pressure roller mills, and in particular relates to a side insert of a roller sleeve of a high-pressure roller mill and a replacement method. Background technique [0002] At present, the high-pressure roller mill is one of the intermediate equipment in the process of cement grinding and metal ore crushing. When crushing ore, in order to improve the rolling efficiency and prevent the material from overflowing in the cavity, a relatively sealed wall must be surrounded by two side baffles on the sides of the two roller sleeves. When the roller sleeve rotates at high speed, the two side baffles are tightly pressed on the side of the roller sleeve, causing a large amount of wear on the roller sleeve and the side baffle. Since the roller sleeve is made of high strength and hardness materials, the size It is also relatively large and heavy, and it is difficult to repair on site after wear and tear. In ord...

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Problems solved by technology

When the roller sleeve rotates at high speed, the two side baffles are tightly pressed on the side of the roller sleeve, causing a large amount of wear on the roller sleeve and the side baffle. Since the roller sleeve is made of high strength and hardness materials, the size It is also relatively large and heavy, and it is difficult to repair on site after wear and tear. In order to improve the wear resistance of the roller sleeve, the current general method is to use wear-resistant welding rods to surfacing the top and side surfaces of the end of the roller sleeve. Welding is uneven and difficult to process. There must be a gap between the side baffle and the side of the roller sleeve, causing the material in the cavity to overflow

Due to the edge effect between the ore and the end face of the roller sleeve during the working process, the butt welding layer on the end face is easy to fall off, which greatly shortens the service life of the roller sleeve and increases the cycle and cost of equipment maintenance.

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