High-lift basic building was the self-priming pump impeller, pump body, pump shaft, bearings, sealing rings, gland consists of six parts.
1. impeller is the core of high-lift self priming pump, its speed and high output, wheel blade also play a major role, before Assembly of the impeller through the static balance test. Impeller internal and external surface should be smooth, to reduce the flow of friction loss.
2. pump body also known as shell, which is the body of water pump. Play a role in supporting fixed, and is connected with the installation of the bearing bracket.
3. role of the pump shaft is connected through coupling and electric motor, the motor torque to impeller, it is the main component transfer mechanical energy.
4. bearings are set on the pump shaft support components of the pump shaft, two roller bearings and sliding bearings. Rolling bearing using butter as a lubricant oil should be appropriate for 2/3~3/4 the volume too much heat, too little and the noise and heat. Sliding bearings using a transparent oil as lubricant, fuel oil level line. Too much oil seeps along the pump shaft and floating base, too little bearing overheating again burned to cause an accident.
5. sealing ring, also known as leakage reduction ring. The impeller inlet gap caused by the General Assembly between the pump housing and high pressure flow of water through the gap in the pump area pump water efficiency! clearance is too small can cause friction wear of impeller and pump casing. In order to increase the return reduced internal leakage resistance, delaying the service life of the impeller and pump housing, foreign aid combined with the pump casing and impeller seal ring, sealing the gap between 0.25~1.10MM.
6. the stuffing box is mainly composed of filler, seal ring, filling tube, packing gland, water sealed tube. Stuffing role primarily to closed pump housing and the space between the pump shaft, so water does not flow out of the pump do not let outside air into the pump. Always keep the pump the vacuum! when the pump shaft and packing friction generates heat to seal control of cooling water to water circle makes filler! keep the pumps running normal. Running about 600 hours to replace the packing.
High-lift self-priming pump parts: suction Chamber, impeller, into three parts. Impeller Chamber is the core of pumps, parts of the core. Through impeller pump for fluid to do work, its energy increases. Impeller in liquid flow direction is divided into three categories:
(1) the radial-flow impeller (centrifugal impeller) liquid along the axis perpendicular to the direction of flow impeller.
(2) diagonal flow impeller (mixed-flow impeller) of liquid along the direction of the axis is tilted out of the impeller.
(3) liquid flow axial-flow impeller in the direction parallel to the axis.
Impellers according to the inhalation method is divided into two categories:
(1) single-suction impellers (that is, inhalation of liquid from one side of the impeller).
(2) double-suction impellers (from inhalation of liquid on both sides of the impeller).
Impeller cover forms are divided into three categories:
(1) closed impeller.
(2) open impeller.
(3) half-open type impeller.