The through wall pump is independently developed based on the introduction of German submersible motor production technology Product: This pump is used for mixed liquid reflux and denitrification denitrification in secondary sewage treatment plants Specialized equipment. Can also be used for ground drainage, irrigation, and wastewater treatment Recirculation and other processes that require micro head and high flow rate Place.

Nanjing Du'an water treatment through wall pumpMain materials

host case stainless steel304

axis stainless steel420

impeller stainless steel304

fairing stainless steel304

Wall penetrators and door flaps 　　　 stainless steel304

Guide rod, steel wire rope, lifting ring stainless steel304

Lifting device, steering device stainless steel 304

Fasteners such as nuts and bolts stainless steel316

mechanical seal tungsten carbide/tungsten carbide

Stainless steel control cabinet304

Nanjing Du'an through wall pumpstructural design

9.1 impeller

Adopting a swept back anti twist curve design, made of stainless steel material, and carefully processed through dynamic balancing experiments, it can efficiently transmit motor output power. In order to prevent blockage and slagging of the impeller, and to prevent loosening between the impeller and the shaft during operation, an internal locking device is used on the impeller fixing structure.

9.2 motor

The motor and impeller of the submersible reflux pump are directly connected, and the insulation level of its winding isFLevel, maximum operating temperature

The degree can reach155^OCThe motor will not experience overload under maximum load and can only be started at most per hour15Secondly, but the time interval should be uniform. The stator of the motor is embedded in the casing using the hot sleeve method, without the need for any positioning pins, and is firm and reliable. Under normal circumstances, the temperature rise of the motor does not exceed80^OC.

9.3 bearing

The motor rotor is supported by a double row angular contact ball bearing and a cylindrical roller bearing;

The operating life of the submersible reflux pump bearings is greater than100000Hour;

9.4 shaft seal

The submersible reflux pump consists of two mechanical seals and one lip seal. A spiral is installed inside the outer sealed cavity

Groove to remove impurities and reduce seal wear. Sealing device material: tungsten carbide/Tungsten carbide.

9.5 monitoring system

There are three normally closed thermal switches connected in series in the stator winding, and the thermal switches are140^OCAction.

There are leakage detectors installed in the stator chamber and oil chamber of the motor to detect the leakage of dynamic and static seals, and to cut off the power supply in a timely manner.

Wall penetrating pumpMain technical parameters

Nanjing Du'an Water Treatmentafter-sales service

After sales is crucial for the development of a company's business and the establishment of its reputation, and it is also an important step in the progress of a company's development. For users, it is a guarantee of product quality and also a reassuring guarantee;

1Adhering to the principle of customer first, all products produced by our company meet strict enterprise standards and national machinery department standards

2Provide spare parts, installation, commissioning, and maintenance services in a timely manner according to customer needs or agreements, and provide technical training to customer personnel.

3For large-scale engineering projects, production, testing, and inspection will be organized according to the requirements of the bidding documents, and cooperation will be provided with on-site acceptance by customers.

4Strictly followIS09001Standard organization for the procurement of raw materials and components, as well as the production and inspection of products.

5When the product cannot be used normally due to manufacturing quality issues under normal storage, maintenance, and usage conditions of the customer, we provide three guarantees (warranty, return, and replacement) service.

6Provide necessary technical documents and product qualification certificates for factory products.

7.During the warranty period, if the equipment fails to meet the specified technical parameters due to errors in the equipment or technical information provided by me, the user should immediately notify us when performing reasonable operations based on relevant technical information. After receiving written or telephone notification,24Exchange within hours/Repair defective equipment or technical documentation.

8.If the product is damaged or malfunctions due to improper use by the user or outside the warranty period, our company provides lifelong repair services for the product.