Selection of pump model
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A wastewater treatment plant is required, and several pumps need to be selected, including clean water pumps and wastewater pumps. Considering the convenience of maintenance and the tendency of subsea valves to get clogged, it is planned to use submersible pumps instead of self-priming pumps. Question 1: How does the service life of submersible pumps compare to that of self-priming pumps? Question 2: How does the price of submersible pumps compare to that of self-priming pumps? Question 3: How does the failure rate of submersible pumps compare to that of self-priming pumps? Thank you, experts
With the same material configuration, the sewage pump requires less investment and has a longer lifespan. It is not convenient for maintenance. Manufacturer 18032233998
It depends on the brand you choose: cheap ones of poor quality tend to break down frequently, while good ones are more durable but come at a higher price. It’s like choosing between buying cheap fertilizers, pesticides, and vegetables at a market, or purchasing individually packaged, eco-friendly vegetables at a supermarket – the quality differs and so does the price; it’s up to you to decide what you prefer and choose accordingly.
What about maintenance? Is the submersible pump convenient? . .
Submersible sewage pumps are difficult to maintain; once the motor burns out, the repair time is even longer.
Submersible pump housings and motors have a high rate of failure over time, especially the motors
Submersible pumps have a short service life, a high failure rate, high maintenance costs, and are difficult to repair. If the pressure requirements for pumping wastewater are not high, sealless self-priming pumps, high-flow axial flow pumps, or single-screw pumps are the better choices. To pump clean water, a pipeline pump is sufficient
Submersible pumps have a shorter service life than self-priming pumps; if you are concerned about clogging of the sewage self-priming pump, it is sufficient to install a filter or grille-like device； If there is too much mud and debris or viscous substances, a screw pump can be considered. Thank you!
Thank you all, sorry for the trouble. . .
This post was last edited by pzhmotor on 2019-9-2 at 16:22. Submersible pumps (pumps whose motor is also underwater are included in this category; as for those where the motor is submerged as well, they’re not suitable for use, as the frequent damage to the motor can be extremely troublesome). Their advantage lies in their ease of movement and installation, but their efficiency is lower, and their head pressure is also less than that of horizontal pumps; they are mainly used for pumping water out of pits. It seems that the failure rate is extremely high; if there are many units in use over a long period of time, the maintenance costs will be very high as well. For long-term use in sewage treatment plants, it is recommended to use corrosion- and wear-resistant mortar pumps; it is not necessary to opt for self-priming pumps, and a vacuum water tank can be made locally at the inlet. I have used the Zeus UHB-ZK series mortar pumps in the ash sedimentation circulating water systems of boiler rooms and gas stations (their efficiency is slightly lower than that of ordinary horizontal pumps), and they are truly excellent – no lubricating oil is needed except for the motor! The boiler room has a high level of sludge, which can easily clog the inlet; therefore, a hose is used as the inlet. When it gets clogged, the pump can be reversed, and it’s easy to remove it for cleaning (we can use this pump without any problems for cleaning the tanks as well).