November 27, 2020
Scraper drive equipment, suitable for sedimentation/thickening tanks with circular (square) structure, and the bridge type can be half-bridge and full-bridge
The mud scraping system consists of driving equipment, center column (for half bridge type), driving platform, walkway, main shaft rotating frame (for half bridge type) or mud scraping shaft (for full bridge type), water inlet baffle and mud scraping arm Frame, scum baffle, overflow weir, scum scraper, scum bucket and mud scraper.
The treated water flows in from the center of the tank and is led into the sedimentation tank through the entry barrier. In a static state, the suspended solids in the water slowly condense together, and the solids with larger specific gravity, activated sludge or concentrated sludge will settle to the bottom of the tank , Through the action of the mud scraper, the sludge is collected in the sludge well in the center of the pool and discharged: In addition, substances with small specific gravity such as grease and fine rubber plume will float on the water surface to form scum, which is collected by the scum scraper The scum hopper is discharged for separate treatment. The driving equipment is a complete machine composed of an electric motor, a worm gear reducer, a planetary gear reducer, and a pinion and inner ring gear seal.
The ring gear has a complete bearing combination, the tooth profile machining accuracy is above JIS6, and the material hardness is 250 to 300BHN. The bearing joint part is precisely processed, and the bearing is assembled and sealed for pollution prevention. The final pinion gear is made of carbon steel or alloy steel and is installed on the output shaft of the planetary gear reducer. The material hardness is 250 to 350BHN, and the tooth surface is hardened to 52 to 60RC hardness.
In the end, the gear of the reducer and the bearing are immersed in an oil bath of a dust-proof shell, with oil pipes, oil needles and drain valves. The ring gears are made of ASTM A27 cast steel. All connecting and engaging parts are precision Clamped after processing.
The planetary reducer is precisely installed on the top of the final reducer, and its reduction mechanism is B10 specification with a life of more than 100,000 hours.
The planetary gear reducer is driven by a worm gear reducer, and its transmission coupling shaft is attached with a rotary handle reduction gear B1 () specifications. The service life is more than 100,000 hours.
The worm gear reducer is equipped with a torque protection device to prevent equipment overload. The torque protection device is equipped with a two-stage action switch, which can sound an alarm at different set torques, or cut off the power supply, and a torque indicator to display the output torque value.
