The central drive scraper is a suspended sludge removal equipment suitable for removing sludge from circular primary sedimentation tanks, secondary sedimentation tanks, and concentration tanks in water treatment projects.

Structural Features

The mud scraper is mainly composed of a motor and a reduction device, a torque protection structure, a spindle, a scraper arm, a scraper, an underwater bottom bearing, a working bridge, and other parts.

ØThe sedimentation tank is made of concrete or steel structure, and the bottom of the tank is slightly conical. The center of the tank bottom is connected to a sludge discharge pipe outside the sludge hopper.

ØThe working bridge is made of concrete or steel structure, and this equipment does not include the pool body and working bridge. Users can solve the problem themselves. Our factory can design and manufacture steel structure pool bodies and working bridges on behalf of customers.

The scraper is composed of a rake frame, a vertical shaft drive device, and a torque safety device.

ØThe rake frame consists of two large rakes and two small rakes forming a cross shape, parallel to the slightly conical pool bottom.

ØThe rake frame is fixedly connected to the vertical shaft with a crosshead, and the bearings on the vertical shaft are a combination of radial and thrust bearings, lubricated with grease. Underwater sliding bearings are composed of nylon bushings and lubricated with pressurized water.

ØThe lower end of the vertical shaft extends into the mud hopper, and the lower end of the shaft is fastened with a scraper to scrape the accumulated mud in the mud hopper, so as to evenly discharge it.

ØThe driving device is a three-stage vertical cycloidal pinwheel reducer, connected to the vertical shaft with a toothed coupling. The reducer is fixed on the machine base of the working bridge.

ØThe over torque safety device is a safety shear pin installed in the chip embedded coupling. When encountering over torque during operation, the shear pin will be cut off to protect the entire mechanical equipment from damage.

III scope of application