Double suction pump _ _ double suction pump in Waugh Waugh trusted pumps

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 installation 1. Check the pump and motor should be no damage. 2, pump installation height, plus hydraulic suction line losses, and its speed can not be greater than the allowable value of the sample suction on the vacuum height regulations. Base size should be consistent dimensions pump unit. 3, the installation sequence: ① the pump on a concrete foundation anchor bolts buried on therebetween by adjusting the wedge pad method of correcting level and anchor bolts properly tightened to prevent move. ② After the foundation and pump foot filled with concrete. ③ until after the concrete to dry, tighten the bolt, and recheck the level of the pump. ④ correction motor shaft and pump shaft concentricity of. So that the two axes in a straight line, concentricity of the two shafts is cylindrical tolerance is 0.1mm, end clearance along the circumference of unevenness tolerance 0.3mm (in and out of the water pipeline connection and were checked again after the test run , should the above requirements character sets). ⑤ After checking the steering motor and pump turned consistency, and put on the coupling and coupling pin. 4, out of the water line should separate bracket support can not be supported by the pump body membership. 5, end table between pump and pipeline, should ensure good air tightness, especially water pipes, must ensure rigorous does not leak, and the unit should be kept free of air may nest. 6, such as water pumps installed in water inches above the water level, irrigation pumps to start, and can be fitted bottom valve. The method can also be used vacuum water. 7, after the pump and outlet road, generally need to install gate valves and check valves (head of less than 20 meters can not), the check valve installed in the rear gate. The installation method described above refers to the pump unit with a common base unworthy. Install pump is equipped with a common base, with the adjustment of the wedge between the horn base and concrete foundation to correct the level of the unit. Then pouring of concrete in the meantime. Its installation guidelines and requirements, and with a common base of the unit do not deserve the same. Hebei Wo large industrial pump main flow single-stage double-suction centrifugal pumps, Francis pumps, wearable slurry pump, power plant desulfurization pumps, mining multistage centrifugal pump, filter feed pumps, pipes direct the pump , stainless steel chemical centrifugal pump, pump mechanical seal, diesel pump units and other products, and contract non-standard pumps and accessories design, production and processing, water treatment engineering design. Reputation first, quality assurance, prompt delivery. Welcome friends to negotiate business. Double suction centrifugal pump impeller inlet outer edge of the pump (suction chamber) there is a gap between the inner edge. If this gap is too large, flowing from the high pressure impeller imported water will drain back to the impeller through the gap, so reducing the amount of water pumps, reducing the efficiency of the pump; but the gap is too small, although able to reduce the amount of leakage, but will caused by mechanical friction. Double suction pump Accordingly, in order to minimize the amount of leakage, double suction pump while the worn easy to repair or replace, usually in the pump cover and impeller are inlaid a metal ring. Because the ring can reduce the amount of leakage, and can withstand the wear and tear, and the pump inlet is located, so called seal ring, also known as Save the drain ring, bearing ring grinding ring or mouth.