FAN-SUPPORTED JUMBO HAMMER MILL

Heavy-duty Hardox-hammer micronising, grinding and integrated pneumatic-conveying station

A heavy-duty crushing-and-logistics system for the micronised, high-capacity grinding of any granular grain, feed raw material or various dry industrial materials to a targeted particle size. Fed continuously and at uniform density by a screw or similar dosing feeders, the system delivers maximum crushing and transfer efficiency at minimum energy use, with aggressive impact kinematics and an integrated independent fan over the body.

WORKING PRINCIPLE

Magnetic protection and regulated flow — controlled, safe feeding: grain-sized dry raw material is fed to the intake hopper evenly and at the same density by feeders; to protect the rotor life and hammer safety, a powerful magnet is integrated right before the feed inlet. Hardox-hammer technology and high-speed rotor — impact crushing: the products entering the chamber are subjected to high-kinetic-energy impacts from special-alloy hammers on the fast-rotating rotor; the material, broken at the molecular level by the hard blows, is brought to micronised form. Two-piece screen and integrated independent fan — calibrated discharge and pneumatic acceleration: the crushed products pass through the two-piece special screens attached to the body and are delivered out at exactly the desired particle size; at this stage the integrated high-pressure independent fan system engages, vacuums the ground product and flawlessly transfers it up to 50 metres without a separate conveying line.

KEY ADVANTAGES

50 m logistics power via integrated independent fan: The independent high-pressure fan coupled onto the body carries the ground micronised product up to 50 metres vertically and horizontally, fully removing the need for an extra elevator, conveyor or external fan in the plant.

Heat-treated Hardox-alloy hammers: The rotor hammers — the machine’s heart — are made of original Hardox, the world standard for wear resistance, and have undergone refined industrial heat-treatment for maximum strength and service life.

Practical “Quick-Change” pin and screen design: A practical removable pin (shaft) system is provided for turning or replacing worn hammers; the two-piece modular screen structure allows screens of different hole diameters to be changed within seconds, tool-free.

Monoblock heavy body and direct drive: The body is made of 12 mm high-strength rigid sheet to fully damp the high vibration and impact stresses; the motor and rotor shaft are driven directly (coupled) by a flexible star coupling that eliminates power losses.

Vast power spectrum: A wide motor-power spectrum and 3 industrial models are offered: Jumbo-190 (12 mm sheet, direct star coupling, 22–55 kW, body-top integrated fan, conveying up to 50 m); Jumbo-380 (75–110 kW); Jumbo-570 (132 kW) — all with body-top fan and transfer up to 50 m.

ENGINEERING NOTE

The Fan-Assisted Hammer Mill (Jumbo) is a high-level fusion of a high-speed crushing mechanism and pneumatic-transfer aerodynamics. The independent fan system located just beneath the crushing chamber creates a positive air flow inside the mill and ensures rapid product discharge. This dual effect both minimises heating inside the mill and, with up-to-50-metre logistic transfer, gives engineers full freedom in the plant’s diagram design.