Universal Crusher

Universal Grinder

1. Product Overview

1.1 General Description

The universal grinder is one of the most widely used size-reduction machines in the pharmaceutical, food and chemical industries, suited to dry grinding of various medium-hard materials. Relative motion between the high-speed rotating movable toothed disc and the stationary toothed disc subjects the material to impact, shear and friction, reducing it to the required particle size. Ground material is discharged through the screen, and the fineness is controlled by fitting screens of different mesh counts. With its simple structure, easy operation, uniform particle size and broad applicability, the universal grinder handles materials from a few mesh up to 120 mesh. The machine is made entirely of stainless steel and complies with GMP and food hygiene standards.

1.2 Key Features

• Movable and stationary toothed discs provide high-efficiency double-sided shear grinding
• Screen-controlled discharge size, uniform and adjustable (10-120 mesh)
• All-stainless-steel construction meeting GMP and food standards
• Air-classified discharge reduces over-grinding
• Simple structure, easy operation and maintenance
• Dust collection system keeps the environment clean
• Wide applicability across many materials
• Complete range from small units to production-scale models

1.3 Document Scope

This specification covers the design principle, performance parameters, system classification, selection of key components, application fields, design standards and certifications, custom optional configurations, warranty terms, packaging and delivery, and the information required for an inquiry. It serves as a comprehensive reference for procurement, model selection and technical exchange.

2. Working Principle

2.1 Universal Grinder Process Flow

Universal grinder process flow: feeding → material enters the grinding chamber → high-speed toothed discs apply impact and shear → material is ground → passes through the screen → pneumatic discharge → collection. Material enters the grinding chamber from the feed hopper and, between the high-speed rotating movable toothed disc (3000-6000rpm) and the stationary disc, is subjected to intense impact, shear and friction. Fine powder passes through the screen at the bottom, while coarse particles remain in the chamber for further grinding. The air-classified design uses negative-pressure airflow to carry qualified fines out of the chamber, reducing over-grinding and heat build-up.

3. System Classification

4.1 Main Technical Parameters of the Universal Grinder