Pump certified in fertile, double suction pump, saving wear double suction pump

Double suction pump efficiency reasons for the decline 1, due to water erosion, water pump impeller flow channel wall and the water becomes too rough, the friction coefficient increases the pump flow path, plus Sheung Shui in the pump flow rate is large, increase head loss. Hydraulic efficiency. 2, since the former pump dosing of drugs or water quality and other reasons, the pump housing severe fouling or corrosion. Pump housing severe fouling increased wall thickness can pump casing around 2ram, dirt and water pump wall to form tumors, so that the pump volume reduced, reducing pumping and the flow path is rough, increase head loss. Customer product efficiency and hydraulic efficiency is reduced. 3, casting defects caused due process pumps, cavitation, erosion, corrosion and chemical attack and other causes produce the pump runner voids or cracks produce water flow vortices caused by energy loss. Hydraulic efficiency. 4, the surface of the impeller cavitation. Due to the dorsal surface of the blade is running a negative pressure, when the pressure Pk5, volume loss and mechanical loss. Since the pump using a long time, mechanical wear and tear resulting leakage and resistance increases, the volumetric efficiency and mechanical efficiency. For these reasons, the pump performance deteriorated. Operating efficiency is reduced by 2% to 5%, severe can reduce the pump efficiency over 10%. Double suction pump anti-clogging performance Why are more and more valued? This is mainly due to two reasons: First, the increased sewage treatment costs. Industrial companies are trying to reduce water consumption per unit of production, which makes the content of the sewage solids and fiber is increasing. Second, double suction pump means more and more use of energy, is driving mode speed regulation, and the speed regulator can not guarantee double suction pump will not be blocked. Double suction pump rotor blade shape is divided into two, namely swirl blades and cutting blades, the two most widely used form of leaves. Swirl impeller is not in the medium is transported in motion, according to the principles of fluid dynamics to be pumped medium guided into the pump chamber, the medium being pumped through the flow from the side of the impeller. Thus, the pumped liquid medium or long-fiber solids are being pumped out together. The cutting blade, can the larger bulk solids shredding, eliminating congestion. sh / s / double-suction centrifugal pumps to start, stop, and run, and start and stop: Before starting, turn the pump rotor should slip even light. ② Close the water valve, into the pumping does not (if no foot valve is evacuated by a vacuum pump water) to ensure that the pump is filled with water. No air harbored. ③ If equipped with a vacuum table or pressure gauge on the pump and the pump to close its base connected to restart the motor rotation speed to be normal after the open;.. And then gradually open the water valve, such as the flow is set too large, can be appropriately off a small valve adjusted; otherwise the flow is too small to open a large gate. ④ Tighten evenly tighten the packing gland compression nut on the liquid into droplets leaking. Also note that the temperature rise at the packing chamber. ⑤ When stopping the pump is running. Sure to shut down the vacuum gauge and pressure gauge cocks and outlet valve on the road and then turn off power to the motor when such a low temperature of their environment, you should pump the lower part of the Quartet plug Open in removing the water pump. to avoid cracking. ⑥ long when not in use. Should open the water pump wiped another member in the machined surface coated with anti-rust oil keep them safe. 2, operation: ① pump bearing maximum temperature should not exceed 75 ° C. ② number of calcium-based lubricating grease to the bearing account bearing body space of 1/3? 1/2 appropriate. ③ packing wear inch compression packing gland may be appropriate if excessive wear and tear and should be replaced. ④ regularly check Tuo Zhen shaft member. Note that the motor bearing temperature rise. ⑤ during operation. When found 矂 sound or other abnormal sounds, stop immediately. Check its reasons to be eliminated. ⑥ can not arbitrarily increase the pump speed, but can reduce the speed to use.