Horizontal screw centrifugal sludge dewatering complete unit
1.PLC control
2.ISO9001
3.sludge dewatering centrifuge
4.automatic continuous operate
5.SKF bearing
Horizontal screw centrifugal sludge dewatering complete unit mainly consists of LW Series Horizontal Screw Discharge Sedimentation Centrifuge, full automatic flocculation agent mixing & feeding device, sludge crushing & cutting machine, sludge absorption pump, medicine filling pump, shaft-free screw transport machine, flow meter, control valve and full automatic control system, etc. It has such advantages as advanced structure, high automation level, continuous and close type operation, safe and reliable operation.
Main frame:
LW Series Horizontal Axis Solid-bowl Scroll Discharge Sedimenting Centrifuge
LW Series Horizontal Screw Discharge Sedimentation Centrifuge is one of main device for the sludge dewatering system. It mainly consists of high speed rotary drum, screw (with same rotational direction as rotary drum and certain rotation speed difference), speed differentiation device and machine stand, etc. When sludge enters into the lumen of rotary drum of the centrifuge, high speed rotary drum will produce large centrifugal force, because of large density, mud granules will produce large centrifugal force, the sludge will become sediment on inner wall of the rotary drum and form ring shaped solid phase sludge cake. Because of small density, water will produce small centrifugal force, it will only form liquid circle layer inside the solid circle layer. Due to different rotational speed between the rotary drum and screw, there exists a relative movement (i.e. speed differentiation). The screw will push sludge to exit of small end of the rotary drum, the water will exit from another end. The function of speed differentiation device is to produce certain rotational speed difference between the rotary drum and the screw. To put the flocculation agent into sludge may produce flocculation effect. It enables dispersed sludge granules to gather and form relatively large flocculation substance so as to speed up separation of sludge and water.
Electrical control system:
It conducts automatic/manual operation for crushing & cutting machine, feeding pump, flocculation agent mixing and feeding device and the centrifuge, it can supervise operation, produce alarm signals for problems and interlock protection.
PLC Full automatic control system has function of constant torque which can automatically adjust feed quantity. It may automatically adjust speed difference according to change of feed torque so as to avoid Jam of material. It applies a 11.3” color LCD touch screen and timely displays work status and parameters of all devices.
According to preset programs, the control system can automatically control start, separation, stop, washing & cleaning of the centrifuge. It can also automatically control crushing and cutting and transport of sludge, mixing and feeding of flocculation agent, transport of dry sludge.
According to customer's required concentration, the flocculation agent mixing and feeding device can automatically conducts mixing and making of flocculation agent