The PWDDFL series vertical multi suction head long axis semi submersible sump sewage pump is a special long axis sewage pump specially designed for complex sewage conditions with high concentration and easy sedimentation. Its core advantages are multi suction head full coverage, active anti clogging, and no fixed installation.
The vertical multi suction head long axis semi submersible sump sewage pump is an efficient sewage discharge main equipment for easily sedimented sewage scenarios such as power plants, mines, and municipal engineering.
🔧  Core structural characteristics
Multi suction head global layout: Each vertical multi suction head long axis semi submersible sump sewage pump is equipped with 3-4 suction heads, which are arranged in the center and corners of the pump pit, forming a point surface combined suction mode, completely eliminating blind spots in pump pit suction, and greatly reducing sludge deposition areas.
Main suction head integrated mixer: The lower part of the main suction head is equipped with a mixing device, which can stir the deposited sediment and ash into a suspended state for easy pumping and discharge; Above, there is an umbrella shaped water pressure plate to prevent air from entering the pump during agitation, ensuring stable suction.
Metal cutter anti winding: The upper part of the mixing wheel is equipped with a metal cutter, which can effectively crush flexible fiber materials such as gloves, cloths, plastic bags, etc., avoiding them from winding the impeller or blocking the suction port. Its anti blocking ability far exceeds that of ordinary sewage pumps.
Non fixed installation design: The suction head also serves as a bracket, without the need for pre embedded parts or brackets to fix it. Simply place the pump in the pit and connect it to the outlet pipe to operate, greatly simplifying the installation process and facilitating later dredging and equipment replacement.
Open impeller structure: adopting an open centrifugal impurity pump impeller, allowing solid particle size in sewage to be ≤ 15mm, suitable for conveying high solid content media, and not easily blocked.
Vertical long axis structure: It can be installed at a depth of 0.5-10 meters underwater. The motor is completely arranged on the ground, and maintenance does not require downhole operations. It runs smoothly and has low noise.
Backwash self-cleaning design: Some patented models are equipped with high-pressure airflow backwash cleaning components, which can backwash the filter screen without lifting the pump body. The manual scraper component can assist in cleaning attached impurities, completely solving the problem of suction head blockage.
📊  Typical performance parameters
parameter item
Industry wide scope
Rated flow rate of 20~420 m ³/h, covering 27 standard specifications
Total head 14~44 m
Medium temperature ≤ 60 ℃, special customized models can withstand high temperatures up to 90 ℃
Allow solid particle size ≤ 15mm
The normal concentration of the medium is allowed to be ≤ 30%, and the instantaneous maximum can reach 30%~45%
The standard underwater depth is 0.5-6m, and the customized ultra long version can be extended up to 10m
Conventional high chromium alloy cast iron for overcurrent material, and 304/316L stainless steel and duplex steel can be selected for strong corrosion scenarios
🏭  Main application scenarios
Industrial scenarios of power plants: ash pond drainage, desulfurization wastewater treatment, cooling tower collection pit discharge, and domestic sewage station drainage in the plant area. It is a standard equipment for power plant sedimentation tank sweeping pumps, specializing in the treatment of high concentration wastewater containing fly ash, gypsum slurry, and fiber impurities.
Metallurgical mining scenario: transporting slurry waste, metallurgical waste liquid, and acidic wastewater containing heavy metals, suitable for underground drainage and mine dredging scenarios, effectively preventing slag deposition from blocking pump pits.
Municipal engineering scenarios: urban drainage pump stations, underground collection pits for sewage discharge, municipal pipeline network dredging, treatment of complex sewage containing sediment and household waste fragments, significantly reducing the frequency of manual dredging.
Coal industry scenario: transporting high concentration media such as coal slurry, coal slag, tailings slurry, etc., suitable for coal slurry pool discharge scenarios in coal preparation plants, effectively preventing coal slurry accumulation.
Paper industry scenario: Conveying pulp and production wastewater containing short fibers, the cutter device can thoroughly crush the pulp fibers to avoid impeller entanglement and blockage.
✨  Core operational advantages
Full anti clogging capability in the entire area: multiple suction heads covering the entire pump pit+active mixing+cutter crushing triple anti clogging design, fundamentally solving the industry pain points of traditional sewage pump suction port single, pump pit dead corner sedimentation, and fiber entanglement.
Strong adaptability to high concentration media: The open impeller and high chromium alloy wear-resistant material can stably transport high concentration slurry containing a large amount of solid particles for a long time, with a service life 2-3 times that of ordinary sewage pumps.
Minimalist installation and maintenance: no fixed installation design, no need for pre embedded brackets, can be directly placed and operated; The motor is located on the ground, and daily inspections and maintenance do not require going underground, greatly reducing downtime for maintenance.
Extremely reliable start-up: The impeller is always completely submerged below the liquid level, achieving self filling water supply throughout the entire process. Water can be discharged immediately upon start-up, completely eliminating the risk of start-up failure caused by suction and cavitation in ordinary sewage pumps.
Stable operation and long service life: The radial runout of the shaft system is controlled within 0.05mm, with low operating noise and minimal vibration. The mean time between failures (MTBF) can exceed 15000 hours, and stable performance can be maintained even after long-term 24-hour continuous operation.
Key operating taboos: It is strictly prohibited to operate the vertical multi suction head long axis semi submersible sump sewage pump in a dry manner. A low water level automatic pump stop protection device must be installed to prevent the agitator and impeller from idling and wearing due to low water level; Two vertical multi suction long axis semi submersible sump sewage pumps with the same pump pit need to be rotated and started regularly to prevent the suction heads of the backup pumps from being blocked by sediment.