20" Bowl Industrial Wastewater 2 Phase Centrifugal Separation
Discharge centrifuge for the effective separation of slurries into
liquid-solid phases or liquid-liquid-solid phases, with the
application of centrifugal sedimentation principle.
A decanter centrifuge separates solids from one or two liquid
phases in one single continuous process. This is done using
centrifugal forces that can be well beyond greater than gravity.
When subject to such forces, the denser solid particles are pressed
outwards against the rotating bowl wall, while the less dense
liquid phase forms a concentric inner layer. Different dam plates
are used to vary the depth of the liquid the so-called pond as
required. The sediment formed by the solid particles is
continuously moved by the screw conveyor, which rotates at a
differential speed than the bowl itself.
The Centrifuge is for continuous separation of 3-phases systems
consisting of two different liquids and one solid. Stock liquid is
brought into the bowl of the centrifuge through a centrifugal pump.
solids settles into outer larger by the centrifugal force. The
settled sediment is pushed into the drying area at the cone of the
bowl by rotary difference between spiral and bow land discharged
from the outlet.
Details of Water Treatment field
The impurities such as glass and braids in the biochemical sludge
from the sludge tank is pulverized and removed. The sludge pump
sends the sludge (concentration 0.5~4% or higher) into the
centrifuge, and the fully automatic flocculant dosing device adds
continuously PAM flocculant solution (concentration 1~3‰) into the
feed pipe through the dosing pump for flocculation in the feed pipe
and in the vicinity to produce flocculus to be sent into the
centrifuge. The dehydrated mud cake is discharged from the drum by
a centrifuge, and transported to the outside through the screw
The dehydration system is widely used for oxidation ditch, AB, A/O,
A2/O, SBR, MBR, anaerobic fermentation, and other processes, as well
as urban domestic sewage, municipal sewage, landfill leachate,
urban tap water, purified water, and some industrial wastewater of
conventional sewage treatment processes. Solid-liquid separation is
achieved by a high-performance DE type two-phase high-efficiency
Modern water purification and sewage treatment processes,
increasingly strict emission standards, and subsequent treatment of
dewatered mud cakes, whether stacked, dried or incinerated, have
set higher requirements for key equipment of excess sludge
Reduce the moisture content of the sediment under the action of
spiral high pressure extrusion
High-dryness screw conveyor and drum structure
The dehydration of solid particles relies mainly on strong
centrifugal force, high-torque screw extrusion force (pushing
torque), and ultra-long solid particle dehydration length. The
centrifuge can generate centrifugal force exceeding thousands of G,
30 ~ 50% higher than the screw pushing torque of common
centrifuges. The screw pusher torque, and the drum dehydration
length is 10 ~ 20% longer than that of common centrifuges.
High torque involute planetary gear differential
The ultra-high pushing torque requires a high-torque involute
planetary gear differential as the foundation. The differential
equipped on the centrifuge features high torque, high speed, low
heat generation, and excellent heat dispersion, which ensure that
the centrifuge can be used for a long time and stably.
CIP washing system
The fully automatic control system is equipped with a CIP washing
system, which can effectively solve the problem that it is not
completely cleaned during the shutdown process and effectively
avoid the equipment troubles caused by artificial factors.
Humanized centrifuge configuration
1.Spiral bearing (in the drum, concealed) lubrication technology:
the lubricant is filled from the outside of the hood.
2,The hood adopts a hinged opening structure and is equipped with a
high-pressure gas strut to assist the opening.
Variable pitch technology
Constant torque control technology
The constant torque control of the centrifuge is the most advanced
control mode in the world. The real-time monitoring of the actual
output torque of the constant torque variable frequency motor
through the high-performance auxiliary inverter is compared with
the set torque value, and PID is used to adjust the material
pushing speed of the screw conveyor in real time. The centrifuge
can achieve continuous, stable, and economic operation.
DC bus constant torque control technology Double-motor double-frequency
Three-phase centrifuge model and technical parameters
|2-4%||2~3||5 ~ 8||15-30||20-40||30-60||40-70||50-80|
Drum diameter (mm)
Length-diameter ratio (mm)
|Designed separation factor||2835||2435||2580||2620||2546||2460||2033|
|(rpm)Differential speed (rpm)||1~50||1-35||1~34||1~34||1~30||1~28||1~28|
Differential maximum torque (Nm)
Main motor power (kW)
|11||15 〜22||30-37||55-75||75-90||90-110||110 ~160|
Ancillary motor power (kW)
Total length (mm)
Total weight (kg)
The length dimension varies with motor power.