Engineering water pump is a mechanical equipment used in various engineering fields to achieve the function of conveying liquid or pressurizing liquid.
Classification of engineering water pumps: according to the working principle classification, it can be divided into vane pumps: relying on the dynamic action of the rotating impeller on the liquid, the energy is successively transported to the liquid, so that the kinetic energy and pressure energy of the liquid are increased, and then part of the kinetic energy is converted into pressure energy through the pump casing, so as to realize the transportation of liquid, such as centrifugal pumps, axial flow pumps, mixed-flow pumps, etc.
Positive displacement pumps:
Utilize periodic changes in studio volume to convey liquids, such as piston pumps, piston pumps, gear pumps, progressive cavity pumps, etc. Other types of pumps, such as jet pumps, water hammer pumps, etc., rely on the energy of fluid flow or other physical phenomena to transport liquids. Categorized by use.
Fire pump:
It is specially used by users in the fire extinguishing system, which can quickly provide a large amount of high-pressure water in the event of a fire, so as to meet people's fire extinguishing needs.
Water pump:
It is used to provide domestic and production water to buildings, factories, buildings, etc., and to transport water from the water source to the place where the user needs, and the water supply pump needs to meet certain pressure and flow requirements.
Drainage pump:
It is used to remove all kinds of stagnant water, such as urban drainage systems, basement stagnant water, sewage treatment plants and other places
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The working principle of the engineering water pump: centrifugal pump: before starting, the pump casing should be filled with liquid. When the impeller rotates at high speed, the liquid is thrown to the outer edge of the impeller under the action of centrifugal force, thus forming a low-pressure area in the center of the impeller, and the liquid is continuously sucked into the center of the impeller under the action of the outside atmospheric pressure, and then thrown out by the impeller, so that the continuous transportation of the liquid is realized. Gear pump: It is mainly composed of driving gear, driven gear, pump body, etc. When the driving gear rotates, thereby driving the driven gear to rotate in the opposite direction, the gear teeth of the gear will form a local vacuum in the oil suction cavity during the meshing process, and the oil enters the oil suction cavity under the action of atmospheric pressure, with the rotation of the gear, the oil is brought to the oil pressure cavity by the gear teeth, and the volume of the oil pressure cavity is reduced due to the meshing of the gear teeth, and the oil is extruded, so as to realize the transportation of oil.
FAQ
Q: What parameters should be considered when selecting engineering pumps?
A: Flow rate (pumping per unit time), head (height at which water can be lifted), power (energy demand), medium characteristics (water quality, temperature, etc.) and installation environment (open/indoor, space size).
Q: What could be the cause of excessive noise when the pump is running?
A: The foundation is not well mounted, the bearings are worn, the impeller rubs against the pump casing, the suction pipe is inlet or the flow rate is out of the rated range.
Q: How to extend the service life of engineering pumps?
A: Clean the filter and impeller regularly, check the status of the lubricating oil, avoid long-term overload operation, and do a good job of anti-freezing and anti-corrosion protection when the machine is stopped.
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