QXB/QFB Self-absorption Type Submersible Aerator

QXB Self-absorption type submersible aerator can be used as a special equipment for aeration and agitating 1n Varies of bio-chemical treatment process for sewage water.

Based on the existing QXB submersible aerator, QFB submersible floating aerator (ZL200520073797.4) is not installed by using dual air inlet pipe or floating in the water by hanging on water wings, instead it is is installed in the pool bottom by its deadweight. Nowadays when an QXB aerator needs to be examined and repaired, the workers cannot launch into the pool if there is water in the sewage pool, so a crane is needed to submerse in the pool for hoist or convey after the water is drained from the pool. Furthermore, this instillation method shall need a firm foundation or platform for support. After modification and improvement, the QFB aerator not only can work in the aeration tank, but it also can work in the soft foundation environment such as oxidation pond, fishpond, landscape lake, sewage channel, and river way, the installation is more facile can save time and manpower, the application scope of submersible aeration is extended as well.

Operating Principle

QXB Self-absorption type submersible aerator is of the direct- connection structure as shown in the drawing. QXB produces belong to the self-suction type. The centrifugal force is produced by the rotating vanes resulting in a negative pressure at the inlet of the vane for sucking air and water. The dynamic energy of the vane is used for mixing the proportional air and water in the mixing chamber. Under the powerful centrifugal force, the air-water two-phase flow diffuses to the circumference after rectification via the flow path along the tangential direction of the vanes. The fine air bubbles will be fully merged with water SO as to get oxygenation aeration.

Based on the existing QXB, QFB changed the admission mode from unilateral admission to bilateral admission or center admission, Water wings are installed on the top of the air inlet pipe, which was made of stainless steel or glass reinforced plastics. The water wings, air inlet pipe, and aerator are united. (See the drawing), the aerator is hanging in the water by means of the flageolet of the water wings, and the water wings are dragged by a three wire rope. The other end of the wire rope is fixed to the pool, or held by three anchors in the pool. The aerator and water wings are placed in the water during installation, and pulled to the pointed area by the wire cable. The ends of the three wire cable are to be fixed to the pool in three directions, and the big water surface pool can have three anchors. The wire cable can be loosened and the equipment will be lifted out of the water if it needs to be examined and repaired.

The use of QXB type centrifugal submersible aerator

QXB type centrifugal submersible aerator is used for sewage treatment plant aeration pond, aeration and sand sedimentation pond, the mixture of sewage sludge oxygenation and mixing, as well as biochemical treatment of sewage or breeding ponds to increase oxygen.

The principle of QXB type centrifugal submersible aerator

QXB type centrifugal submersible aerator is a direct connection structure. The rotating impeller generates a centrifugal force in the water, through which a negative pressure zone is formed around the impeller, air is sucked in through the inlet pipe, the sucked in air and water are mixed in the mixing disc, and then this good homogeneous mixture is automatically discharged from the discharge outlet.

This process includes the following aspects: mixing disc in the air and water mixing gas-liquid mixing effect, the outlet discharge of the gas-liquid mixture to form a cycle and convection; a large number of air molecules in the oxygen high-speed movement to obtain an oxygen absorption efficiency.

QXB type centrifugal submersible aerator features

1. Higher oxygen dissolution rate, the ratio of small bubbles is large, high oxygenation efficiency and wide oxygenated area.

2. There is no dead zone in the pool, and the horizontal aeration flow with bubbles can completely flush every corner of the pool bottom.

3. simple structure, compact, long life of the unit, can withstand large loads of bearings, the use of oil bath shaft sealing and suction impeller cavity of the air to prevent the work of water and seals contact, which ensure that the aeration machine in 24 hours of continuous work, long-term trouble-free operation.

4. Save engineering investment, no need to provide air source, eliminating the blower, easy to install, low noise.