D-type multi-stage centrifugal pump start Note: 1, before the pump starts the pump must be filled with liquid, until a liquid out of the pump housing at the top of the exhaust nozzle opening. 2, before starting the pump outlet valve is closed. In the case of the start flow rate is zero, the minimum pump power required, overload can be avoided when the motor starts and burn, the pump outlet valve to open and then gradually adjusted to the desired flow rate. 3, the pump is running fever should always check leak tightness of the case and filler filler layer to the parking can hand drive shaft, and a liquid oozing drop by drop to appropriate. 4, when pump stop, turn off the outlet valves are, so as not to cause reverse flow impeller nut loose, if the parking time is longer, the pump and piping liquid should put the net, to prevent corrosion and winter freeze. 5, when the flow needs to be changed, can adjust the opening of the pump outlet valve is controlled, although this resistance is increased due to the fluid part of the power needs more consumption, but it can achieve flow quickly adjusted and can continue to change, for chemical production characteristics. Must not be used to pay attention to the opening degree of the pump inlet valve is controlled, this can lead to "cavitation" phenomenon occurs, the body occurs due to impact vibration "cavitation" took place and make a noise, flow head loss, severe can not be normal work. D85-45X9D85-67X3D85-67X4D85-67X5D85-67X6D85-67X7D85-67X8D85-67X9D155-30X2D155-30X3 D-type multi-stage centrifugal pumps Structure Description D-type multi-stage multistage centrifugal pump, suction in the water segment on the horizontal direction and a discharge vertically upward in the water segment, its head may need to increase or decrease based on the use of pump series. Pump assembly is good or not, a great impact on the performance of the relationship, especially in the mouth of each impeller and guide wing and out of the center, which is about to make a slight deviation to reduce the pump flow and head to reduce the differential efficiency, it is important to note 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, since the compression ranging from multi-stage pump impeller before and after, there must be an axial force, the axial force on the balance disc borne by the impeller manufacture static balance test. 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 80D-30 * 6 multi-stage pump in 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 D280-43 * 4 multi-stage pump, 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 80D-30 * 7 multi-stage pump, packing gland, packing ring and packing, etc., a small amount of high-pressure water flows packing chamber from the water seal effect. Tightness of the packing must be appropriate, not too tight also not too loose, liquid oozing drop by drop can 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. Multi-stage pump | 80D-30 * 7 multi-stage pump | quality multi-stage pump manufacturers (certified merchants) are provided by Anguo City-yuan Pump Company. Road Zhiyuan, temper forward. Anguo Shi Yuan Pump Co., Ltd. (www.shiyuanbeng.com) aims to become and you win symbiosis, strategic partners to move forward, more determined to become the most influential centrifugal pumps business, and you leap together to success!