These grinders are equipped with rotating screens. Pressure drop is kept at a minimum, allowing their stable operation at large treatment plants.

Description

These grinders are marketed throughout Japan under a Sole Distributorship Agreement with JWC Environmental, US grinder maker.
A rotating screen (made of SUS or resin) is mounted to a dual shaft grinder, and screenings are trapped by the rotating screen, induced into the grinder, and shredded.  As the screen itself rotates, the screenings trapped on the surface of the screen are fed efficiently to the grinder.  Screen mesh size is 6.4mm when made of SUS and 15 mm x 18 mm when made of resin.

Features

  1. Power consumption can be suppressed because the grinder main body and the rotating screen can be driven by one power.
  2. As the screen itself rotates, when the screen rotates to the downstream side, it is backwashed by influent water. Therefore there occurs little adhesion of screenings to the screen. This makes regular cleaning unnecessary and the maintenance easy.
  3. There are two types of rotating drum screen; single drum type and double drum type so that they can cater to the needs of both large and small treatment plants. The pressure drop of a double drum type grinder can be decreased significantly, compared to a conventional grinder without a screen.

Track Record

The number of grinders with rotating screen we have sold is 66 units (as of July 2005).  The total number of grinders of all types we have sold is 394 (as of July 2005).  We have a line of grinders with screen, which overall meet the throughput requirements from 100m3/h to 3900m3/h.