The QHW-7.5/12 through wall pump is a new product developed by Nanjing Du'an Water Treatment Equipment Co., Ltd. based on the production technology of submersible mixers. This pump is a specialized equipment for mixed liquid reflux, denitrification and denitrification in secondary sewage treatment plants, and can also be used for pumping purified water during ground drainage; Irrigation and control of waterway systems; Micro head and high flow areas are required in the recycling or mud suction circuits during wastewater treatment.

Wall penetrating pump QHW-7.5/12Usage conditions:

1. During continuous operation, the medium temperature shall not exceed 40 ℃;
2. The pH value of the medium is 6-9.
3. Submersible depth of 10m.

Wall penetrating pump QHW-7.5/12Method for representing the model of aerobic pool reflux pump:

Structure Introduction:

Specially designed device components and equipment spare parts enable the sludge reflux pump to achieve performance.
1. Cable: The cable adopts a specially designed waterproof cable;
2. Junction box: The junction box is fully enclosed and isolated from the surrounding liquid and stator box;
3. Motor: 50Hz squirrel cage 3-phase submersible asynchronous motor, F-class insulation, protection level IP68. The motor is cooled by the surrounding medium;
4. Shaft: The shaft of the electric motor is made of stainless steel material, and the rotor undergoes dynamic balance testing;
5. Sealing: The static seal is an O-ring seal. The shaft seal is a mechanical seal that isolates the oil chamber from the surrounding medium;
6. Bearing: Imported bearings are used, with a designed service life of over 100000 hours;
7. Oil chamber: Oil is used to lubricate and cool the mechanical seal friction pair, and isolate the permeate;
8. Impeller: The impeller has three blades, which are wide and thin, with a smooth and swept back surface, efficient and unobstructed operation, and have self-cleaning function;
9. Imported cone tube: The purpose of imported cone tube is to form a flow state;
10. Discharge joint: The discharge joint is used to fix the inlet cone pipe on the outlet pipe;
11. Guiding device: The guiding device consists of two pipes (conduits) and an upper conduit clamp.

Product Features:

1. Specially designed for low head and high flow, with high efficiency;
2. Anti clogging, winding, and reliable use;
3. The sealing material used can safely and continuously operate for more than 10000 hours;
4. Compact structure, easy installation and maintenance;
5. The host adopts a stamping structure, with small size, high precision, corrosion resistance and no noise;
6. Equipped with leakage and motor overload protection (alarm) devices to ensure product safety and reliability.

Installation of through wall pump:

1. Proper installation and use are the basic guarantees for the long-term and normal operation of this pump.
2. The sludge reflux pump adopts an automatic coupling installation system, which can quickly lift the equipment for inspection and maintenance without any mechanical disassembly, making installation convenient and fast.
3. Except for the wall penetrating pipe that needs to be pre embedded, the guide rod and lifting bracket of this equipment are connected to the pool body with steel expansion bolts and do not require pre embedded parts.
4. The embedded parts and snap doors are purchased and installed by the user, and the user should pay attention when placing an order.