How to properly choose a hammer mill for grain: expert advice

The unit for grinding seeds of fodder crops without subsequent cleaning is a hammer grain crusher. The choice of grain crushers on the market is distinguished by a wide assortment and requires knowledge of the features of this type of equipment.

Hammer crushers, whose characteristics differ from rotary and roller ones, are suitable for obtaining high-quality feed, which is digested by animals more productively than whole grain. The creators of the equipment focused on:

• maximum simplicity of design for ease of maintenance;
• durability and reliability in operation;
• regulation of the degree of grinding of the initial raw material;
• the lowest possible energy consumption;
• compactness.

Hammer crusher, design features

In this apparatus, the parts directly participating in crushing are impactors (hammers). When considering the issue in relation to the design of a hammer crusher, the following criteria can be distinguished:

• the number of working rotors (one or two shafts);
• classification by the method of fixing impact elements (with suspension on hinges or rigidly fixed hammers);
• rotation mechanism (with or without reverse);
• position of impactors (in 1 or 2 rows);
• presence of grate bars (grid grates).

What aspects to pay attention to for ensuring uninterrupted operation

The maintenance of the loading hatch should be convenient, so choose the dimensional parameters of the crusher individually. The company "Stroytekhnik" manufactures compact units for use in households. The canopy or cover of the loading opening must prevent dusting and ricochet effects, so pay attention to this when choosing.

Depending on the requirements for the output product, the number of rotors is selected; for hard raw materials, it is better to purchase a twin-roll modification.

During the intensive grinding process, the housing is subjected to a large load from the inside; lining (armor) is provided for its preservation. It is made of various composite materials that prevent premature wear of the drum in the working space. The lining is replaceable, just like the grate bars.

Hinged mechanisms on which the beaters are mounted will not cause problems for a long time if they are of decent quality. You can check them upon purchase by inspecting the free play of the hammers. For trouble-free operation of the grain crusher, it is preferable to purchase advanced models with an overload prevention function.

How to properly choose the power of a hammer crusher

Electric motors of various types of hammer crushers range in power from 4 to 1250 kW. They have a decisive influence on production volumes, which start from tens of kilograms and reach several tons.

If your goals require high-capacity crushing machines, crushers for hard materials (crushed stone, wood, polymers) are suitable. Construction equipment can be bought on specialized websites.