Clarifier Decanter

Clarifier Decanter

Capacity : capacity 35 000 l/h

Continuous separation of solids

from suspensions with very high

(up to 60%) solids content.

Clarification of liquids.

Concentration of solids.

Classification of solids according to

particle size. Chemical and pharmaceutical

industries, starch industry, fish and

fat processing industries,

food and beverage industries,

and waste water treatment plants.

Part of Decanter

1 Scroll drive

2 Bowl drive

3 Bowl bearings

4 Gear

5 Distributor

6 Scroll

7 Centrifugation space

8 Bowl

9 Regulating ring

10 Feed

11 Overflow

12 Frame

13 Solids discharge

14 Drive motor

15 Centripetal pump

16 Discharge of the clarified liquid under pressure

Bowl

The solid-wall bowl has a cylindrical section for efficient

separation and clarification of the liquid and a conical section

for drying the solids. The product enters the decanter through

the feed  and passes through the distributor  into the

centrifugation space. The liquid level in the bowl is adjustable

via the regulating ring. Due to the centrifugal forces, the

solids particles are flung onto the bowl wall. The hard-metal

faced scroll transports the solids to discharge which

is armoured with hard-metal wearing bushes. The clarified

liquid leaves the centrifugation space via the centripetal pump

at discharge under pressure.

Housing

The housing consists of a frame with supporting feet, protective

plates and catchers for the discharged product phases. The feet

permit installation of the decanter on an even floor. A raised

base or similar structure is normally not required. Vibration

absorbers underneath the fact prevent most of the vibrations

from the machine being transferred to the foundation. The

bearing housings contain the bowl bearings and are screwed

to the frame. Parts coming into contact with the product are

made of stainless steel. The remaining frame parts are coated

with a largely lye and acid resistant paint which is not affected

by impacts.

Drive

The driven by a low-noise three-phase AC motor

designed for heavy-duty starting. The motor is started in a

star-delta circuit.

Power is transferred to the bowl via V-belts. The conveyor

screw is driven via V-belts and a gear. The V-belt pulleys

can be exchanged so as to produce various speed differentials.

The bowl bearings, the conveyor screw bearing and the gear

are lubricated with grease.

The drive motor is installed beneath the bowl between the

feet of the frame to save space and is dampened against

vibrations.

Technical data

Bowl

Diameter                                                  500 mm

Length/diameter ratio                            4.0

Speed max.                                             3000 min-1

g-force max.                                            2500

Moment of inertia                                  

(J = ∫mr2)                                                  20 kgm2

Motor                                                        Rating 22-35 kW

Speed at                                                  50 Hz 3000 min-1

Speed at                                                  60 Hz 3600 min-1