Purchase DGP boiler feedwater pump

Description :

　　Product Overview

　　The DGP series horizontal self balancing multi-stage boiler feed pump is divided into single suction multi-stage structure and double suction multi-stage structure. This series of products is designed to accelerate the development of multi-stage centrifugal pump technology and meet user requirements. Based on absorbing and digesting advanced foreign technology, combined with our company's years of research and development experience, we have designed innovative products. The product performance has reached the advanced level of similar products in the industry, and it is a substitute for ordinary multi-stage centrifugal pumps. The typical feature of this type of pump is that it completely eliminates the traditional balance disk system used for balancing axial force in the structure, and relies on the symmetrical arrangement of impellers to automatically balance axial force. This innovation makes multi-stage pump operation energy-saving, efficient, stable and reliable, with fewer vulnerable parts and greatly reduced operating costs.

　　execution standard

　　GB/T5657-95 "Technical Conditions for Centrifugal Pumps"

　　JB/1051-93 "Types and Basic Parameters of Multi stage Clean Water Centrifugal Pumps"

　　GB/T3216-2005 "Hydraulic Performance Acceptance of Rotary Power Pumps - Level 1 and Level 2"

　　MT/T114-2005 Technical Conditions for Multi stage Centrifugal Pumps Used in Coal Mines

　　Model meaning

　　Example DGP280-43 * 6

　　DGP stands for multi-stage, segmented boiler feedwater pump, self balancing type

　　280- indicates a pump design point flow rate of 280m3/h

　　43- indicates that the design head of the pump is 43m

　　6- indicates a level of 6

　　Scope of application

　　The DGP series horizontal self balancing multi-stage boiler feedwater pump can be used to transport clean water or liquids with physical and chemical properties similar to clean water. It is suitable for medium and low-pressure boiler feedwater, as well as high-pressure water supply and drainage in factories or cities. The temperature of the conveying medium is 20C ° -160C °, and the allowable inlet pressure is less than 0.6MPa.

　　structural characteristics

　　 DGP type horizontal multi-stage self balancing centrifugal pump is divided into single suction multi-stage structure and double suction multi-stage structure according to the suction form. Its suction and discharge ports are both vertically upward. The inlet, middle, outlet, and secondary inlet sections of the pump are connected together by tightening bolts. The required pump head can be determined by increasing or decreasing the number of pump stages,

　　The main components of a water pump include the inlet section, middle section, outlet section, secondary inlet section, positive guide vanes, reverse guide vanes, positive impeller, reverse impeller, shaft, throttling and pressure reducing device, sleeve, bearing body, transition pipe, etc.

　　The rotor is composed of a positive impeller, a throttling and pressure reducing device, a reverse impeller, a shaft sleeve, a bearing sleeve, and other components mounted on the shaft. The bearings are of a fixed floating type with a dry oil lubrication structure. The driving end uses cylindrical roller bearings, and the driven end uses angular contact ball bearings.

　　The working chamber of the pump consists of an inlet section, a middle section, an outlet section, a secondary inlet section, a positive guide vane, a negative guide vane, a transition pipe, etc?.

　　The sealing surfaces between the inlet, middle, and outlet sections of the pump are sealed with sealant or O-rings. A sealing ring and guide vane sleeve are installed between the rotor and fixed parts for sealing. When the wear of the sealing ring and guide vane sleeve affects the working performance of the pump, they should be replaced in a timely manner.

　　The sealing forms of the shaft include mechanical seal and packing seal. When the pump adopts packing seal, the position of the packing ring must be correctly placed, and the tightness of the packing must be appropriate, so that the liquid can leak out drop by drop. Various sealing components of the pump are installed in the sealing chamber, and a certain pressure of water is introduced into the chamber to provide water cooling or lubrication for the water seal. A replaceable shaft sleeve is installed at the shaft seal to protect the pump shaft.

　　This series of pumps is directly driven by the prime mover through an elastic coupling, and when viewed from the direction of the prime mover, the pump rotates clockwise.

AfterSalesService :

• boiler feed pump