The present invention relates to a pump device for sucking and transferring articles, wherein the pump device comprises a pump housing, an air withdrawal opening, at least one inlet opening and an outlet opening formed in the pump housing, at least one drive device being connected to the pumping device, the pump housing further comprising a first short side formed as a semicircle or a partial circle and a second short side formed as a flat or plane surface, two long sides extending tapered from the first short side to the second short side and two planar sides, forming a closed pump housing, where at least one impeller further is arranged in the pump housing.

A pump assembly mounts on a universal adapter having a back end attached to a motor, a receiving area, an outer magnet assembly rotatable around the receiving area by a motor, and a forward mounting plate surrounding the forward receiving area and having mounting features for attachment to the back cover of each of a variety of pump assemblies. The pump assembly includes a casing having an inlet and an outlet. A back cover attached to the casing has mounting features for attachment to the mounting features of the universal adapter. A containment shell includes a cup for positioning in the receiving area. An inner magnet assembly is positioned in the cup is rotatable by magnetic coupling to the outer magnet assembly through the cup. An impeller is rotatable within the casing by the inner magnet assembly to pump fluid from the inlet to the outlet.

An electric centrifugal pump having a motor housing, a pump head, a containment shell, and a rotor assembly consisting of a pump impeller and a permanent magnet rotor, wherein the pump head with the containment shell defines a wet chamber, in which the rotor assembly is arranged rotationally around a longitudinal motor axis, the containment shell with the motor housing defines a dry chamber, in which a wound stator is arranged, and the permanent magnet rotor is arranged within the stator and a hollow-cylindrical region of the containment shell. Particle accumulations in the region between the containment shell and the permanent magnet rotor cannot occur or can only occur to a very minor extent and that the consequences of impurities in the wet chamber are reduced in order to prevent premature wear or a blockage of the centrifugal pump.

An improved centrifugal pump uses straight tubes or fluid channel members rather than expanding passages between the inlet and exit flow. In straight tubes a process occurs of building up of pressure faster than within the passages as the fluid attempts to expand due to the Coriolis force potentially acting against the centrifugal force to build up the pressure within and along the tube or fluid channel. Because the flow increases faster than increases in RPM a more compact pump is provided that can move more air and produce higher pressures than ordinary centrifugal pumps. Hence: 1) Flow increases proportional to tube area because a larger area means more air can be drawn into the tube; 2) Flow increases proportional to tube length because the exit pressure increases proportional to tube length; and 3) Flow increases faster than increases in RPM, thereby exhibiting a higher outflow pressure.

Disclosed are a bailer-type long-shaft pump and a pump station constructed using the long-shaft pump. The long-shaft pump comprises a bailer vehicle (110), a long shaft (120), a bearing (130), a transmission device (140) and an electric motor (150). The transmission device comprises a planetary gearbox (141), an orthogonal shaft gearbox (142) and a frequency converter (143); one end of the long shaft (120) successively passes through the bearing (130), the planetary gearbox (141), the orthogonal shaft gearbox (142) and the frequency converter (143), so as to be in transmission connection with a drive shaft of the electric motor (150); and the bailer vehicle (110) comprises a cylindrical base (112) and at least three blades (111) distributed on the surface of the cylindrical base (112) in an annular array radially extending from the center of the long shaft. Two adjacent blades and the surface of the cylindrical base forms a bailer capable of bailing water from a lower water side of a channel to a higher water side of the channel. The pump station (200) comprises a pump station foundation (210), several equipment rooms (231) transversely distributed at intervals and constructed on the pump station foundation (210), and two ends of the long shaft (120) of the bailer-type long-shaft pump (100) are supported on side walls of two adjacent equipment rooms. The bailer-type long-shaft pump achieve large water flow and low lift, the pump station is space-saving, has shorter construction cycle, and reduces investment and operation costs.

An impeller for centrifugal pumps having at least one blade for delivering solids-containing media has, between a leading edge of the blade and a circumferential direction, an angle a, and between a leading edge of the blade and a meridional direction, an angle Depending on the dominant speed, the associated angles , are less than 90, preferably less than 70, in particular less than 50.

The present invention relates to a spiral pump, including a support body; at least one or more substantially rigid rotary parts that are rotatable relative to said support body, wherein said one or more rotary parts comprise at least one integrated spiral fluid channel that has an inlet for receiving fluid arranged at or near the outer radial wall of said one or more rotary parts and an outlet for discharging fluid at an increased pressure at or near its rotary axis; wherein a fluid passage, configured for passing fluid at the increased pressure from inside the one or more rigid rotary parts to outside the one or more rigid rotary parts, is arranged at or near the rotary axis; and drive means for rotatably driving the one or more rotary parts. The invention further relates to a manufacturing method for such a spiral pump.

A pump comprising a volute housing, a rotatable shaft, and an impeller. The volute housing comprises a volute cavity side wall, an upper cylindrical wall, and an upper wall. The upper cylindrical wall extends upwardly from an upper perimeter edge and includes an upper recessed notch formed therein. The upper wall extends radially inwardly from the upper cylindrical wall. The rotatable impeller is operatively coupled to the rotatable shaft and comprises a top cylindrical wall and a top flange. The top cylindrical wall extends upwardly from a top perimeter edge of the top flange and includes a top recessed notch formed therein. The top cylindrical wall is separated from the upper cylindrical wall of the volute housing by an upper annular gap. The top recessed notch of the rotatable impeller and the upper recessed notch of the volute housing may be slot-shaped or wedge-shaped.

The present disclosure relates to a two-vane pump for wastewater and a design method of a two-vane pump for wastewater using machine learning, and more particularly, a design method of a two-vane pump using machine learning capable of having efficiency of a target head and performing optimal design for sizes of solids that can pass through and a two-vane pump for wastewater according to the machine learning. According to the present disclosure, there is provided a design method of two-vane pump for wastewater using machine learning, including: a) setting an objective function; b) setting design variables of the impeller and volute for deriving the set objective function and a range of each design variable; c) deriving a plurality of experimental points including values of the design variables within the range of the design variable; d) generating an input value by calculating the value of the objective function through numerical analysis of each of the derived experimental points; e) constructing a surrogate model through machine learning for the input value; and f) deriving an optimal design of the two-vane pump for wastewater from the constructed surrogate model.

The present invention provides a pump impeller which has improved anti clogging characteristics, in particular through the use of an impeller vane having a specially profiled leading edge which, during operation of the impeller, forces rags or the like down along the leading edge, which increases in thickness along the length thereof, until the rags become re-entrained in the fluid and thus exit the impeller avoiding the clogging thereof.