The complete set of sludge dewatering system consists of sludge feed system, flocculant dosing system, sludge dewatering system, sludge transport system and automatic control system.
The complete set of sludge dewatering system consists of sludge feed system, flocculant dosing system, sludge dewatering system, sludge transport system and automatic control system.
1. Sludge feeding system:
The sludge feed system consists of a feed pump and a sludge cutter. The sludge cutter mainly shreds the fiber windings in the sludge.
2. Flocculant dosing system:
The flocculant dosing system consists of an automatic dispensing machine, a liquid chemical dosing system and a control system. The automatic dispensing machine prepares and stores the liquid medicine, and the liquid medicine adding system adds the prepared medicine liquid to the used equipment.
3. Sludge dewatering system:
The core equipment of the complete set of sludge dewatering system is the sludge dewatering system, which consists of a horizontal decanter centrifuge. The horizontal decanter centrifuge consists of a frame, a hood, a main bearing, a drum, a screw, a differential, a drive system, and a control system. The drum and the spiral rotate at a high speed in the same direction at a differential speed, and the material enters the spiral inner cylinder through the feeding pipe, and enters the rotating drum from the feeding port. Under the action of centrifugal force, the heavier solid phase material is deposited on the wall of the drum to form a sediment layer, and the spiral continuously pushes the deposited solid phase material to the cone end of the drum, and is discharged outside the machine through the slag discharge port. The lighter liquid phase material forms an inner liquid ring, which overflows the drum continuously from the overflow end of the drum and exits the machine through the liquid discharge port.
4. Sludge delivery system:
The sludge transport system consists of a shaftless screw conveyor. The shaftless screw conveyor has a good conveying capacity for the sludge after dewatering of the centrifuge.
5, automatic control system:
Using high-performance PLC, touch screen man-machine interface, all unit equipment operation, parameter setting and monitoring can be completed on the touch screen, which can realize constant torque automatic control. When the sludge concentration and flow rate in the centrifuge drum changes, the auger torque changes and the auxiliary motor current changes. According to this feature, when the auxiliary motor current changes, the PLC operating frequency is changed, the auxiliary motor operating frequency is changed, and the differential speed is automatically adjusted, so that the screw pushing torque changes in the direction of decreasing the error. At the same time, the working frequency of the feed pump is changed, so that the feed flow rate changes in the direction of reducing the torque error of the auger, so that the screw pushing torque is always stable. The dryness of the mud cake is guaranteed. The sludge in the drum is not piled up, and the occurrence of blockage is avoided.
Keywords: sludge dewatering system complete equipment
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