The Function and Maintenance of Raymond Mill Shovel Knife

• Publication time：2025-07-10
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What is a Raymond mill shovel?

The shovel structure of a Raymond mill is generally arc-shaped and trapezoidal. The arc-shaped shovel matches the curvature of the grinding disc to ensure stable material transportation. The trapezoidal shovel is wider at the top and narrower at the bottom, with strong bearing capacity. The angle design matches the movement of the grinding disc, making the material distribution uniform.

The function of the shovel blade of the Raymond mill

The shovel blade is one of the important parts of the Raymond mill. It is fixed on the base of the Raymond mill. When the main shaft rotates, it shovels up the materials and uses centrifugal force to evenly throw the materials between the grinding roller and the grinding ring, preparing for the grinding process.

A reasonable design angle of the shovel blade of the Raymond mill can guide the flow of materials, avoiding accumulation, blockage, or uneven distribution. If the angle is too small, it is difficult to throw the materials; if the angle is too large, the materials will disperse. Only when the angle is reasonable can the materials form a uniform material layer, improving the grinding efficiency and quality.

Maintenance of Raymond Mill Shovel Blade

Excessive Wear: When processing hard materials or using materials with insufficient wear resistance, the wear of the shovel blade accelerates. The material can be upgraded, such as changing to a surfacing wear - resistant layer material; surfacing repair can also be adopted.

Loosening and Fracture: If the installation is not firm or the bolt specifications are not suitable, the shovel blade is likely to loosen; if it operates under long - term overload, the shovel blade is likely to break. When installing, use a torque wrench to tighten the bolts, and use anti - loosening devices to enhance the effect. Check regularly: Pretreat the materials, and check the shovel blade regularly. Conduct a comprehensive inspection of the shovel blade every 300 - 500 hours of operation. Observe the appearance, measure the thickness, pay special attention to the blade edge and connection parts, and handle problems in a timely manner. Ensure that the equipment operates within the rated load.

Uneven Material: Deformation of the shovel blade angle and uneven wear will lead to uneven material shoveling, affecting the service life of the grinding roller and grinding ring and the grinding effect. If angle deformation or uneven wear is found, the shovel blade can be adjusted, and if it is serious, it should be replaced. Pay attention to selecting a suitable shovel blade, install it strictly, and conduct a weight balance test.

During the shutdown maintenance of the Raymond Mill: Residual materials should be cleaned to prevent the shovel blade from getting stuck. When purchasing shovel blade accessories, they should match the original factory model to ensure the stable operation of the equipment and production efficiency.

Installation Key Points: When installing the shovel blade, ensure weight balance to prevent spindle vibration; do a good job of anti - loosening treatment for the fastening bolts.

Summary

The shoveling knife of the Raymond mill is a core parts of the equipment. Its design and maintenance affect the grinding efficiency and production stability. Regular inspection and maintenance can extend its service life and reduce the risk of malfunctions