Product Overview:
Buoy-tethered submersible mixers, also known as buoy-type submersible mixers, are the latest generation of mixing equipment designed for deep circular or square tanks where gentle and uniform mixing is required without damaging the floc structure of the activated sludge or the bacterial slime. Based on the summary of existing wastewater mixing equipment at home and abroad, the product structure and performance have been innovated, particularly by creatively transforming the horizontal structure of the propeller mixers into a vertical circulating structure. This modification significantly enhances the overall structural technical performance, mixing efficiency, service area, and applicability. The mixers offer advantages such as long service life, low noise, easy installation and maintenance, cost-effectiveness, and low operational costs.
Operating Principle:
Buoy-tethered submerged mixer with propeller blades, utilizing high-displacement, screw-type propellers as the main hydraulic components. The submersible motor drives the propeller blades to work, generating a certain flow rate and flow field, creating a circular mainstream belt at the bottom and around the pool. Due to the high flow rate of the mainstream belt, a turbulent region forms around it, promoting a large-scale, vertical circulation within the entire water body. This achieves a uniform and gentle stirring effect, keeping the sludge in a state of constant movement and suspension, thus enhancing the treatment efficiency.
High, medium, and low mixing series, categorized by different application scenarios.
High-speed to medium-speed mixing series have higher rotation speeds, a smaller service range, but more gentle mixing. Suitable for anaerobic or aerobic treatment in wastewater treatment.
Low-speed push mixer series features low speed, wide service range, high hydraulic efficiency, and even mixing, suitable for use in regulating ponds of various wastewater treatment projects, as well as in anaerobic or aerobic treatment.
Product Features:
1. Large turbulence area with wide operational range, gentle and uniform mixing, without causing any damage to the floc structure of the activated sludge or the microbial aggregates.
2. The water flow utilizes a vertical large circulation scheme, suitable for deeper circular or square ponds. It effectively stirs sludge, with a radiation area ranging from 100 to 800 square meters.
The mixer is powered by a submersible motor, which operates submerged in the liquid. It not only offers excellent cooling conditions and a wide range of applicable depths, but also does not generate noise or secondary pollution.
4. The main seal of the diving motor consists of two independent mechanical seals, with the friction pair material being corrosion and wear-resistant alloy and silicon carbide. All fasteners are made of stainless steel.
The motor windings are F-grade insulated, with an IP68 protection rating, featuring leak detection and winding overheating protection functions, ensuring safer and more reliable product use.
Multiple installation options available. Floating installation allows for easy movement of the work location, offering flexibility and convenience; it can be centrally controlled automatically or operated individually, making management straightforward.
Scope and Application Conditions:
Broadly applicable for the treatment of industrial wastewater from oil, chemical, dyeing and finishing, leather, papermaking, textile, and other industries, as well as urban domestic sewage.
Medium Temperature: -0℃ to 40℃
Medium pH value ~5-9
Medium density not exceeding 1150 Kg/m³
Equipment should be free of fibrous matter; avoid plastic burlap, metal wire, sticks, and other debris from entering the pool.
The diving motor must be fully submerged in water for operation and cannot be used in environments prone to fire, explosion, or strong corrosion.
Structure Overview:
Our factory-developed submersible buoyant mixer is compact and has a small volume. The medium-to-high-speed mixer is composed of a buoyant float, submersible motor, impeller, steel wire rope, and guide rod; while the low-speed buoyant mixer consists of a paddle, reducer, submersible motor, steel wire rope, main shaft, and buoyant float.
Installation and debugging:
Installation of medium to high-speed mixers
⑴. Secure each of the four buoy flange bands to the center of the buoy box's four sides. Then, connect one end of the fixing steel wire rope to the earring on the band using a shackle. Prepare four sufficiently long and sturdy ropes on-site to tie the other end of the steel wire rope securely.
The submersible mixing motor cable should be secured to a steel wire rope and extended to the shore for connection to the electric control cabinet.
Check the motor's rotation direction. Before the first start-up of the submersible mixer or after each reinstallation, the rotation direction should be checked. The method of inspection is: briefly start the submersible mixer and observe that the impeller's rotation direction aligns with the direction indicated on the label. If the rotation direction is not the same, simply swap the positions of any two phases in the three-phase wiring. If multiple submersible mixers are connected to the same control box or terminal, each mixer must be checked individually.
④. Secure the buoy with hoisting equipment, ensuring balance and avoiding direct attachment to the clamping ears. Gently lift the entire unit with the hoisting device and slowly lower it into the pool. Unhook the equipment and use a winch to carefully position it in the pool. Arrange the buoy in a diamond shape with each corner aligned with the pool's edges. Then, slightly tension the steel cables, visually aligning the opposite cables in a straight line. The four cables form two intersecting lines that are perpendicular to the buoy's sides. Drill into the pool wall at a solid position along the cable direction, secure the stakes with expansion bolts, and adjust the cable lengths on all four sides. Consider the potential drop in water level and provide ample slack. Clamp the ends securely and fasten them to the stakes with shackles. Throughout the hoisting process, always protect the cables and never use the cable of a submersible mixer for lifting or suspending the mixer.
Low-speed mixer installation
When installing the blade, align it with the hub and blade mating surface, ensuring the tip angle of the blade extends beyond the main hub. The remaining installation steps are consistent with those for medium to high-speed mixers.
Attention! The impeller must not be reversed underwater, otherwise it will cause severe damage to the main engine and blades!
