Brief Design Aspects

Horizontal Blade plastic grinders are the most common design available in the market. In a typical design there are 3 blades in rotor and 2 stationary blades. All blades require periodic sharpening. The stationary blades can be adjusted to maintain the close clearance with between the rotary and stationary blades. The models are available from 1 HP till 50 HP with typical application between 5-15 HP. The grinder chamber size goes on increasing as the HP increases. In 24" and bigger models usually set of 6" or 12" blades is used instead of one big 24" blade.

Application specific Accessories

Cutter arrangement

For cutting rolls, cans in half for feeding in the grinder

Material Handling Blower and Cyclone

For fine grinding applications and light material grinding application

Collection Trolley with liquid separation arrangement

In product destruction application like filled bottles, ampules for gravitational separation of liquid after crushing

Disadvantages of this common plastic grinder design

Throw back of the material

some material is thrown back from the hopper and some pushing is required so that fed in material can be grabbed in cutters

Low throughput in light material grinding

Due to uncontrolled air flow in the grinding chamber the light material keeps floating and it takes more time to get caught in blades for reduction

Large size blades

The special material blades used in grinders are heavy and difficult to handle, and adjust

Unused area of blades

only 1/3rd area of the blade is usable after resharpening as remaining area is required for blade tightening

High blade cost

Blades being consumable item of a grinder the cost implication of changing the whole blade set is high