Structural Features on Chaoyue SWFP Series Fine-grinding Hammer Mill

The materials to be ground are fed in from the feeding inlet on top of the grinding machine by a matching feeding mechanism, and enter the grinding chamber from the left or right side via a guide plate. The materials are ground gradually under the impact of hammers rotating at a high speed and the rubbing action against the screen, then pass through the screen apertures under the effects of centrifugal force and airflow, finally were discharged from the outlet at base frame.

Of a welded steel structure, the hammer mill consists of a base, an upper housing, a rotor, an access door, a screen hold-down mechanism, a feed guiding device and etc. The inlet and outlet locate at top and bottom centers respectively. The driving motor and the rotor are mounted on same base, and direct driving is realized by means of an elastic straight pin type coupling or an elastic pin type coupling (for SWFP66×125).

Structure of the key component parts

Rotor
The rotor consists of a main shaft, hammer carrier discs, shaft pins, hammers, bearings and etc, and it is main moving part of grinding machinery. Only those hammers with a thickness of 4 mm can be used for hammer replacement, and they must be fixed in accordance with the hammer arrangement plan, additionally, the difference between the total mass of the hammers of the two symmetrical groups should not exceed 2g.

Screen
Fitted inside the screen hold-down mechanism, the screen is easy to be replaced.
Feeding guide mechanism
It guides the feed flow to enter the grinding chamber from the left or right side of the machine. Diversion of the material guiding plate is controlled by the cylinder, and motor rotation direction will be automatically changed to suit the feeding direction.
Safety guard
To avoid any accident in operation, the access door is equipped with an interlocker so as to ensure that when the access door is opened the motor can never be started. (Fig 1)