The central drive mud scraper is a suspended type of mud removal equipment suitable for removing sludge from circular primary sedimentation tanks, secondary sedimentation tanks, and concentration tanks in water treatment engineering. Mainly used in circular sedimentation tanks with larger diameters in urban sewage treatment plants, waterworks, and industrial wastewater treatment, to remove sludge settling at the bottom of the tank and skim the scum on the tank surface. Through deceleration drive and transmission of suspended components, the sludge is scraped and collected by a scraper to the central sludge collection tank, and discharged outside the tank by static water pressure or pump. Adopting middle water inlet and sludge discharge, and surrounding drainage to ensure uniform water flow. Utilizing liquid level difference self suction sludge discharge, equipped with scum scraping and discharging device and overload protection device.
Working Principle
The central drive sludge scraper adopts a central transmission and vertical frame type, and sewage enters the surrounding distribution tank, and flows evenly into the pool through the bottom distribution hole of the tank. Under the action of the surrounding water baffle, the water flows from the bottom of the pool to the center, and the sludge is deposited at the bottom of the pool by its own weight, forming a separation of mud and water. The driving device drives the small and medium-sized frame to rotate, and drives the scraper arm and suction pipe to rotate.
Under the action of static water pressure, the sludge evenly enters the suction port on the suction pipe and is then discharged from the pool through the sleeve valve of the discharge well through the central discharge pipe, The size of sludge discharge can be controlled by the lift of the sleeve valve. The scum on the water surface is skimmed to the edge of the pool through the skimming device, and then scraped into the slag bucket by the scraper to discharge outside the pool; The supernatant, on the other hand, overflows into the outlet channel through a triangular weir plate and is discharged.
Product Features
The central transmission mud scraper is mainly composed of a driving device, spindle, railing, steel beam, vertical grid, support, mud scraper, overflow weir plate, pull rod, small scraper, underwater bearing, steady flow cylinder, electric control box, and other component groups. The central transmission concentration scraper further separates the free water in the sludge of the concentration tank to reduce the volume of sludge, increase the concentration of sludge, and discharge the concentrated sludge outside the tank.
The central transmission scraper suction machine is suitable for large and medium-sized sedimentation tanks with peripheral inflow, peripheral outflow, and central discharge. It is mainly used for suction and discharge of sludge in the secondary sedimentation tanks of urban sewage treatment plants.
Product Characteristic
1. The working bridge adopts a full bridge type, and its material can be made of carbon steel, stainless steel, and other structures.
2. The driving device adopts a vertical three-stage cycloidal pinwheel reducer or a combination of a helical gear reducer and a worm gear reducer to ensure output torque and speed.
3. The scraper adopts a linear scraper.
4. The lower end of the vertical shaft of the mud scraper is equipped with underwater bearings and scrapers to avoid deviation during vertical shaft rotation and sludge accumulation in the mixing tank.
5. Equipped with mechanical and electrical dual overload protection, ensuring safe and reliable operation.
6. The equipment is easy to operate and can be directly and remotely controlled for operation.
Advantage
1. The mud scraping at the bottom of the pool is driven by a deceleration drive mechanism, with a compact structure and high mechanical efficiency;
2. Diagonal scraper with good continuity and high efficiency in collecting mud; Install a rubber scraper under the stainless steel scraper to ensure that the scraper is clean and there will be no floating mud.
3. The slope ratio of the pool bottom is 1:10, and the sludge resistance during mud scraping can be ignored.
4. The main beam is made of square steel with high structural strength. It adopts the process of hot-dip galvanizing followed by topcoat spraying, which has strong anti-corrosion performance. The main beam can also be directly poured with concrete, which saves more investment.
5. Easy to operate and can achieve remote control.
Model & Specifications
| Model | Pool diameter(mm) | Pool depth(mm) | Peripheral linear speed(m/min) | Power(KW) | Weight(kg) |
| LDZXG-3 | 3 | 3 | 1-2 | 0.37 | 2500 |
| LDZXG-4 | 4 | 3.5 | 3200 | ||
| LDZXG-5 | 5 | 4 | 3800 | ||
| LDZXG-6 | 6 | 4 | 4000 | ||
| LDZXG-10 | 10 | 4.5 | 1.5-2.5 | 0.55 | 6000 |
| LDZXG-12 | 12 | 5 | 6800 | ||
| LDZXG-14 | 14 | 5 | 2-3 | 0.75 | 7600 |
| LDZXG-16 | 16 | 5 | 8300 | ||
| LDZXG-18 | 18 | 5 | 9100 |
