Zenit High-Efficiency Mixing Systems
Submerged mixers are the most practical, efficient solution for mixing liquids in water treatment and purification plants.
Suitably installed in tanks, these devices apply a force varying depending on the propeller diameter, shape and rotation speed to the liquid in which they are immersed, and keep the mass of fluid in motion to boost homogenisation and prevent sediment formation.
They can be adopted in single or multiple installations, or in combination with bottom aeration systems, depending on the process in which they are used.
Their efficiency class IE3 motors, already applied on the Zenit UNIQA range of submersible pumps, keep running costs down, with low energy use and limited maintenance.
Their complete compatibility and vast assortment of accessories allow them to be installed in any point of the tank, both for optimal mixing and for use as replacements for obsolete devices in existing systems.
Dimensions
Zenit Mixers Product Range
Why Mixers?
Essential components of water treatment and purification plants, the new Zenit mixers share the stylish looks, reliability and new-concept high-efficiency motors of the UNIQA range.
Modular
The ZMD mixers is built on a modular criterion in which high-efficiency motors evolved from the UNIQA units are coupled with propellers with different shapes, sizes and materials.
This means greater flexibility when selecting the product, which can be configured specifically for the application, and for liquids with different densities and concentrations.
Reliable
Meticulous design, machining on latest-generation machining centres and high quality components make Zenit mixers highly reliable. This ensures a long working life even with liquids containing high solid concentrations, and low maintenance, guaranteeing trouble-free, continuous system operation.
Innovative
Zenit mixers are built with innovative materials and include state-of-the-art engineering solutions developed in a modern department which also conducts performance and endurance tests on the parts most subject to wear.
This guarantees lower energy consumption and exceptional versatility, making them suitable for any type of installation.
| Construction materials |
|---|
| Motor complex | EN-GJL 250 grey cast iron |
| Propeller | AISI 316 stainless steel |
| Shaft | AISI 431 stainless steel |
| Mechanical seals | 2 silicon carbide (SiC) in oil chamber |
| Nuts and bolts | A2-70 Stainless Steel |
| Gaskets | NBR |
| Hook & Runner | AISI 304 stainless steel |
| Paintwork | Bicomponent epoxy paint 200 μm |
| Operating limits |
|---|
| Max. ambient temperature | 40°C |
| Max. immersion depth | 20 m |
| pH of treated liquid | 6-12 |
| Max. starts/hour | 15 (evenly distributed) |
| Max. acoustic pressure | 70 dB |
| Duty | S1 – continuous operation |
| Density of treated liquid | 1060 Kg/m³ |
| Max. dynamic viscosity | 500 mPas |
Features
1. MOTOR
Premium IE3 class cold-running motor for high efficiency and minimal energy use. Isolation class H (180°C).
2. MECHANICAL SEALS
Two silicon carbide (SiC) mechanical seals in large, inspectable oil chamber.
3. PROPELLER
Cast AISI 316 stainless steel propeller, designed with specially shaped blades to ensure high hydraulic efficiency and prevent fouling with filaments and solids. Extra thick for ruggedness and reliability even in heavy-duty conditions.
A special chopper system in the rear of the propeller prevents the entry of filaments which could become entangled around the drive shaft and impair its operation.
4. MONITORING
Water sensor detecting seepage into the mechanical seal oil chamber The temperature sensors prevent possible damage due to overheating of the motor and bearings.
5. CABLE GLAND
Innovative cable gland system with cable holder. The universal thread ring-nut can be removed to fix a rigid or flexible duct to the cable gland to protect the cable from physical and mechanical stresses.
6. BEARINGS
Ball bearings with lifetime lubrication designed to guarantee 100,000 working hours.
INSTALLATION
Wide range of rugged stainless steel accessories for optimal installation in relation to the system layout and when replacing existing devices.
