• The DFSS series double suction pump is a horizontal single-stage double suction pump, which adopts a horizontal split structure and has been recognized as a national key new pump by the Ministry of Science and Technology of China

• Product and Shanghai High tech Achievement Transformation Certification.

• The DFSS series pumps have significant characteristics such as reliable performance, energy saving, easy maintenance, and long service life, and have been highly favored by users since their launch in the market.

• The product design complies with the GB/T5657 standard.

• The pump adopts a linear design with reinforced ribs to make the pump structure more reasonable, beautiful in appearance, and stable in installation.

• The shorter bearing spacing increases the rigidity of the shaft, ensuring smooth operation, low vibration, and low noise of the unit.

• The fully sealed pump shaft design ensures that the pump shaft does not come into contact with the conveying medium, thereby ensuring that the pump shaft is not corroded, easy to disassemble, and has a long service life.

• Part of the bearing body adopts a split structure. By opening the pump cover and bearing body with the upper cover, the entire rotor can be removed, making adjustment simple and maintenance convenient.

• There are two types of shaft seal structures: mechanical seal and packing seal. According to user requirements, special sealing methods can also be used, such as sand control special seals, layered shear packing seals, etc.

• The pump body and pump cover are both molded with resin sand, ensuring accurate casting shape and flow channel dimensions, smooth surface, and improved hydraulic efficiency.

• The use of a hydraulic model and CFD optimization design for the pump has improved its hydraulic efficiency and cavitation performance.

• The use of finite element method for strength calculation makes pump operation more reliable and durable, extending the service life of the pump.

• The bearing has a water-cooled structure and can be used under higher temperature conditions.

purpose

• This series of products is suitable for industries such as power plants, tap water, municipal, construction, fire protection, and industrial and mining enterprises to transport clean water or other media with physical and chemical properties similar to clean water.

working conditions

• Flow rate: 66~37000m ³/h

• Lift: 5-180m

• Import pressure: ＜ 0.3MPa

• Transport medium temperature: Conventional ≤ 80 ℃, cooling structure ＜ 105 ℃, inlet pressure ≥ 0.3MPa, or temperature equal to or higher than 105 ℃, special ordering is required.

Structural diagram (structures below 700 caliber)

Serial number name and standard material list

Note: 1. The above material configuration is the configuration when the user does not specify the material.

2. Users can choose other materials and overcurrent components as needed, such as ductile iron, cast iron, stainless steel, cast copper, etc.

Structural diagram (for structures with a diameter of 700 or more)

Serial number name and standard material list

Note: 1. The above material configuration is the configuration when the user does not specify the material.

2. Users can choose other materials and overcurrent components as needed, such as ductile iron, cast iron, stainless steel, cast copper, etc.

Spectrogram

Pump rotation diagram

• Standard type (when viewed from the motor end towards the pump, the rotation direction of the pump is clockwise)

• Counter clockwise type (when viewed from the motor end towards the pump, the rotation direction of the pump is counterclockwise)

Ordering instructions

Required ordering information:

• Pump model or basic parameters such as flow rate, head, cavitation allowance, properties and temperature of the medium required by the user, as well as special parameter requirements;

• The material of the main components of the pump (if not specified, it shall be delivered according to the configuration in this sample);

• Import pressure (if the import pressure is ≥ 0.3MPa, please specify the pump casing material or contact the technical support department for consultation when ordering);

• Type of shaft seal (including mechanical seal, layered shear packing seal, special sand control sealing components, ordinary packing seal, etc. If not specified, it shall be delivered as ordinary packing seal);

• Structural types of bearing components: two types can be selected according to conditions such as medium temperature, and need to be specified when ordering;

• The rotation direction of the pump (for special types, when viewed from the transmission end towards the pump, the impeller rotates counterclockwise. If not specified, it will be delivered clockwise according to the standard type);

• Requirements for motor speed, power, voltage, protection level, insulation level, cooling method, explosion-proof configuration, etc;

• Base: In this sample, a shared base is provided for machine base numbers below 315, and a separate base or no base is provided for machine base numbers above 315. Please specify when ordering;

• If spare parts are required, please indicate the name and quantity of the required spare parts;

• When placing an order, if there are no special requirements for the flange, the data listed in the book should be used for delivery. If there are any special requirements, they should be explained at the time of ordering.

• Indicate the sealing flushing method: external internal flushing, external flushing. External internal flushing is suitable for situations where the water temperature is less than 80 ℃ or the medium is not water. External flushing is suitable for situations where the water temperature is ≥ 80 ℃ and the medium contains sand and other particles.

• This pump is a flat flange. If a water stop line needs to be added to the sealing surface, it must be specified in the contract.

Selection instructions:

• The user's order is not limited by the data listed in the sample performance curve and performance parameter table. Our company can design and provide products specifically according to the user's actual required flow rate and head;

• If the performance parameters listed are similar, standard impeller pump type and high-speed pump type are generally preferred (provided that the cavitation performance requirements are met);

• If the flow and head parameters required by the user are not in the high flow and low head operating range of the product, the power of the supporting motor can be appropriately reduced based on the actual operating point calculation.

• If there are special selections beyond the sample content or if there are any uncertainties about the sample content, please consult the Technical Support Department of Shanghai Oriental Pump Industry directly.

• Recommended spare parts: shaft sleeve, mechanical seal, sealing ring, packing, bearing, impeller, etc.