Mud pump is the main equipment of dredging rig, mud pump is the main supporting equipment of the dredger, its main use of water movement to complete the dredging purpose, it will be the underwater soil layer through mechanical or high pressure water cutting to make it loose, so that the sediment and water mix to form a certain concentration of mud and water mixture (mud), and then through the mud pump installed on board the suction port of the mud pump suction vacuum will be sucked mud into the mud pump, and discharged to the mud chamber of the dredger or directly to the side of the side of the mud barge or through the discharge pipeline to the blowing area to achieve the purpose of dredging and blowing. The mud is then sucked into the mud pump through the suction port of the mud pump installed on the ship, and discharged to the mud chamber of the dredger or directly to the side of the barge, or transported to the blowing area through the mud discharge pipeline to achieve the purpose of dredging and filling. This kind of water-powered dredger is mainly divided into rake suction type, winch suction type, bucket wheel type, suction cup type, blowing (suction) mud type, jet type and so on.
At present, in the dredger mud pump are centrifugal, single-stage, single-suction suspended (a few old mud pump for the seat) mud pump, its working principle is similar to centrifugal pumps, it is driven in the prime mover, mud pump impeller rotating in the pump casing, generating centrifugal force and make the impeller parts of the formation of a vacuum, will be sucked through the suction pipeline into the mud pump, and then through the rotating blades to generate centrifugal force, the centrifugal force under the action of thrown away from the impeller shooting Therefore, different rotational speeds, different diameters and widths of the mud pump has different flow and discharge pressure (head), different rotational speeds, different diameters and widths of the mud pump flow channel should have its own reasonable shape, especially in the mud pump outlet at the mud nozzle shape and location of the mud is particularly important, otherwise the mud pump flow channel and the mud nozzle of the mud wear will be aggravated, the wear of the mud pump not only increase the leakage of the mud pump, the hydraulic efficiency decreases, but also shorten the life of the mud pump, and the mud pump will be used for the mud pump. And also will make the mud pump life shorten, impeller suction performance deterioration. Therefore, the operation, the use of personnel in the maintenance of welded mud pump, must pay attention to the shape of the pump casing inside the flow channel and mud mouth restoration. As well as the impeller and the gap between the anti-wear plate adjustment.
Mud pump working principle
Centrifugal mud pump and centrifugal water pump impeller, there are obvious differences in design, the two flow rate and pressure of similar mud pumps and pumps of the impeller, the difference is shown in the figure below, mud pump impeller in the pump casing of the liquid (slurry) in the rotation, resulting in centrifugal force, so that the centre of the impeller caused by the vacuum, the liquid through the suction pipeline and be sucked into the centre of the mud pump. Then under the action of centrifugal force, the mud is thrown away from the impeller to the surrounding shot, so that it slows down in the pump casing pressure increases, and finally the mud will be pressed into the mud pipe and then pressed out of the mud discharge.
This is the introduction of the mud pump and its principle
