LW Series Sludge Thickening and Dewatering Complete Unit

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.

Technical Parameters:

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.

Shaft-free screw transport machine

 Model LS Shaft-free Screw Transport Machine mainly consists of drive device, shaft-free screw vane,     U-shaped slot, changeable abrasion-resistant scaleboard and frame. It is mainly used for transporting dewatered sludge cake from the centrifuge to outdoors sludge heaping field or transport vehicle. Entire work is done at close state so as to keep environment clean.

Technical Parameters:

Flocculation agent mixing and feeding device

Three-chamber type high polymer flocculation agent mixing and feeding device is a kind of high efficient, new type high polymer flocculation agent making device, it can continuously make and feed readymade flocculation liquid into sludge and mix and then enter into the centrifuge. It mainly consists of
●Automatic dry powder feeding device
●Automatic water filling device.
●Mixing device and pipe valve, etc.

Technical Parameters:

Remarks: We can also provide customer with two-chamber automatic device which batch makes and feeds high polymer flocculation solution.