Centrifugal pump driven by a motor general, before starting the pump, the pump and suction pipe full of liquid. When the impeller rotates at high speed between the blades of the impeller to drive the liquid along the rotation, due to centrifugal force, the liquid thrown to the outer edge of the impeller (flow rate may be increased to 15 ~ 25m / s) from the center of the impeller, the kinetic energy increases. When the liquid enters the pump housing, since the pump casing volute gradually expanded in the flow path, the liquid flow rate decreases, a part of kinetic energy into static pressure energy, so a high pressure liquid flows along the discharge outlet. At the same time, the impeller due to the liquid was thrown at the center and create a vacuum, and the pressure Pa at the level higher than the wheel center, therefore, in the suction line of the liquid into the pump differential pressure. Constantly rotating impeller, the liquid is sucked and continuously pressed out. Due to centrifugal liquid was able to convey, mainly by centrifugal force, it is called a centrifugal pump. Centrifugal pumps in chemical production the most widely used, because it has a wide range of performance applicable (including flow, pressure head and adaptive nature of the medium), small size, simple structure, easy operation, uniform flow, less failure, life long, acquisition costs and operating costs are low and other advantages. D-type multi-stage centrifugal pumps Structure Description D-type multi-stage multistage centrifugal pump, suction in the water segment, wear multi-stage pump, a horizontal direction and a discharge vertically upward in the water segment, Its head can be increased or decreased according to need to use the pump series. Pump assembly is good or not, D12-25X8 wear multi-stage pump, great impact on performance relationship, especially the mouth of each impeller and guide wing and out of the center, which is about to make a slight deviation pump flow is reduced, D12-25X10 wear multi-stage pump, head reduce inefficient, it is important to note that in the maintenance of assembly. D-type multi-stage centrifugal pump main parts are: water segment, the middle, the water segment, impeller, guide wings baffle, the water segment guide wings, shaft seal ring, gimbals, bushings, end caps and bearing body. Water segment, the middle guide vane baffle, the water segment guide wings, the water segment and end caps are made of cast iron, together form the pump studio. The impeller is made of high quality cast iron, there are leaves, liquid axially unilateral entry, the front and rear wheel compression range, there must be an axial force, the axial force on the balance disc borne by the static balance test impeller manufacture . Quality carbon steel shaft, in the middle with the impeller, with the key, the sleeve and the sleeve nut on the shaft. The coupling end of the shaft member is mounted, connected directly to the motor. Seal ring is made of cast iron, high-pressure water pumps to prevent water leakage back portions are fixed above the water segment and the middle of wearing parts, replace worn parts availability. Balancing rings made of cast iron, fixed on the water segment, which together constitute the balance balancing device. Balance disc made of cast iron, mounted on the shaft, located between the water segment and end cap, balance the axial force. Bushings made of cast iron, located at the packing room, as fixed impeller and shaft-fitting protection for wearing parts, replace worn parts availability. Bearings are single row radial ball bearings, the use of calcium-based lubricating grease. Filler acts as a seal to prevent leakage of air entering and plenty of fluids, packing the water segment and end cap packing room, packing gland, packing ring and packing etc., packing room plays the role of a small amount of high-pressure water flows into the water seal. Tightness of the packing must be appropriate, not too tight also not too loose, D12-25X3 wear multi-stage pump, liquid can drop by oozing prevail. If the packing is too tight, the sleeve is easy to heat, while consuming power. Packing too loose, fluid loss due to lower pump efficiency. D12-25X6 wear multi-stage pumps, mining pumps, wear multi-stage pump is provided by Anguo City Pump Co., Ltd. Shi Yuan. Anguo Shi Yuan Pump Co., Ltd. (www.shiyuanbeng.com) located in Hebei Province Road King Industrial Zone Anguo pump. Scraps and development in the wave of market economy, the current Shiyuan water pump has a high profile in centrifugal pumps, and enjoys a good reputation. Shiyuan water pump made whole network business alliance certification, marking our service and management level has reached a new height. Shiyuan Pump staff is willing to common development with all people a better future.