Wilo-EMU TR 50-2… – TR 120-1...

Special features/product advantages

  • Secure your processes.
    The planetary gear has large dimensions so that the mixing forces are absorbed efficiently.
  • Efficient energy usage.
    The innovative blade geometry ensures the best possible specific thrust coefficient. At the same time, this reduces your energy and operating costs.
  • Reliable operation.
    Clogging-free operation with backward-curved incoming flow edge.

Series description

Design

Submersible mixer with single-stage planetary gear

Application

Utilisation in activated-sludge tanks and sludge tanks for:

  • Generation of flow
  • Suspension of solid matter
  • Homogenization
  • Prevention of floating sludge layers
  • Other areas of application in industry, agriculture and water supply

Model Numbers

Example:Wilo-EMU TRE 90-2.24-4/17 x
TRSubmersible mixer
EHigh-efficiency motor in accordance with premium class (IE3; derived from IEC 60034‑30)�
90x 10 = nominal propeller diameter in mm
2Model
24x 10 = propeller speed in rpm
4Number of poles
17x 10 = stator length in mm
xPropeller code for welded propellers, e.g. S20 (without = PUR propeller)

Technical data

Equipment/function

  • Stationary installation on walls
  • Flexible installation through the use of guide rail system
  • Can be swivelled horizontally during installation with guide rail system
  • Installation with stand allows free placement in basin
  • Single-stage planetary gear

Materials

  • Housing components: A 48 Class 35/40 B (EN-GJL-250)
  • Propeller: PUR, AISI 1.4571 or PUR/GRP
  • Propeller hub: AISI 316TI (1.4571)
  • Screwed connections: AISI 304 (1.4301) or AISI 316TI (1.4571)
  • Seal bushing: AISI 316TI (1.4571)
  • Gear shaft: Stainless steel AISI 329 (1.4462)

Description/design

Propeller

2- or 3-blade propeller with a nominal propeller diameter of 20 inch (500 mm) to 47 inch (1200 mm). Non-ragging design made possible by backward-curved incoming flow edge .

Motor

Wilo-submersible motor of the T-series with standard connection for an easy and efficient adaptation of the motor output. The motor heat is given off directly to the fluid via the housing. The winding is equipped with a temperature monitor. Large-sized inclined (not with TR 80-1) and grooved ball bearings ensure long service life of the motor bearings.

TRE units are equipped with the high-efficiency “TE motor” which meets the “Premium classification” (IE3, derived from IEC 60034‑30).

Sealing

Sealing is achieved through the use of a 3-chamber system (prechamber, gear chamber and sealing chamber). The large-volume prechamber and sealing chamber collect leakage from the mechanical seal. If desired, the prechamber can be equipped with an external sealing chamber electrode. The sealing between the fluid and the prechamber, as well as between the gear and sealing chamber are realized by a corrosion-resistant and wear-proof mechanical seal made of solid silicon carbide material. The sealing between the prechamber and gear chamber as well as between the sealing chamber and motor are realised by radial sealing rings. A seal bushing ensures long-term corrosion-protected fit of the mechanical seal.

Gear

Single-stage planetary gear with exchangeable transmissions. The gear bearings are dimensioned so that the resulting mixing forces are absorbed and are not transferred to the motor bearings.

Cable

The power cable is a type NSSHÖU cable for heavy mechanical loads. The power cable enters the motor housing through a water pressure-tight cable entry with strain relief and bend protection. The individual wires as well as the cable sheath are additionally sealed to keep out fluids.

Configuration

A separate configuration must be carried out for each application to ensure optimum generation of fluid current. Carefully follow the instructions for the supplied configuration when installing the units.

Commissioning

Operating mode S1 - Continuous duty:

The submersible mixer must be immersed when operated. Surfacing the propeller is strictly prohibited. In the case of fluctuating fluid levels, the system should switch off automatically if the degree of water submersion drops below the minimum level. The power cables must be installed in a way that these cannot be drawn into the propeller!

Options

  • Special voltages
  • Thermistor temperature sensor
  • External sealing chamber control
  • Ceram C0 coating
  • Ex-rated to ATEX, FM or CSA

Accessories

Scope of delivery

  • Submersible mixer with mounted propeller hub and cable
  • Cable length per customer request
  • Accessories per customer request
  • Operating and maintenance manual

Product

Design

Prechamber

Gear chamber

Sealing chamber

directly driven

-

VFD operation

Single-stage planetary gear

Two-stage planetary gear

-

Sealing by mechanical seal on motor side

Sealing by rotary shaft seal on motor side

Sealing by mechanical seal on fluid side

Seal for rotary shaft seal on fluid side

-

Explosion protection

Application

Wet well installation, ground installation

-

Wet well installation, wall fixation

-

Guide rail system for wet well installation

Tripod for wet well installation

Materials

Cast propeller

-

Steel propeller

PUR propeller

PUR/GRP propeller

GRP propeller

-

Equipment/function

Motor temperature monitoring, bimetal

PTC motor temperature monitoring

º

Motor leakage monitoring

Sealing chamber monitoring

º

Propeller blades can be replaced individually

-

Product

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