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US 2019/0170154 A1Published application
Assembly for reducing size of suspended solids
AssigneeWeir Minerals Australia Ltd.
InventorsGareth Munro, Cesar Calma, Hugh Duong, Nestor Cinotti, Alvin Alurkumar
Life of this patent
Estimating the term…
Abstract
An assembly for reducing the size of suspended solids in a pump intake including a rotatable element and a screen configured to locate in a position between a pump and the rotatable element.
Claims21
1-50. (canceled)
An assembly to receive an incoming fluid, to reduce the size of suspended solids in the incoming fluid to generate an output fluid, and to provide the output fluid to a pump, the assembly comprising:
- a rotatable element having at least two arm members extending generally radially from a central hub;
- and
- a screen positioned between the pump and the rotatable element, wherein the pump drives fluids having the suspended solids through the screen, and wherein the rotatable element is operable to shear at least a portion of the suspended solids going through the screen and reduce their sizes when one of the at least two arm members moves adjacent the screen.
An apparatus in fluid communication with a pump, the apparatus comprising:
- a shroud adapted to fit coaxially with an inner diameter of an inlet of the pump to receive fluid flows having solids suspended therein;
- a rotating member rotatable in the shroud and having a hub and an arm, the arm having a downstream side, a forward surface, and a chamfer surface connecting the downstream side to the forward side;
- and
- a screen having a plurality of apertures and a plurality of internal supports, the screen having an upstream periphery facing toward the downstream side of the rotating member, wherein the plurality of apertures are sized to permit solids in the fluid flows within a size limit to pass the screen and wherein the forward surface of the rotating member and the upstream periphery are distanced to allow the rotating member to break apart solids greater than the size limit, the chamfer surface of the rotating member aiding the forward surface of the rotating member to break apart the solids.
1 more element
A pump assembly comprising:
- an impeller rotatable about a main shaft, the impeller extending a rotatable shaft coaxial with the main shaft;
- an inlet to receive fluids having solids suspended therein, the inlet providing the fluids to the impeller;
- a shroud adapted to fit coaxially with an inner diameter of the inlet to receive the fluids;
- a rotating member connected to the rotatable shaft and rotatable in the shroud, the rotating member having an arm member having a downstream side, a forward surface, and a chamfer surface connecting the downstream side to the forward side;
- and
- a screen having a plurality of apertures and a plurality of internal supports, the screen having an upstream periphery facing toward the downstream side of the rotating member, wherein the plurality of apertures are sized to permit solids in the fluids within a size limit to pass the screen and wherein the forward surface of the rotating member and the upstream periphery are distanced to allow the rotating member to break apart solids greater than the size limit, the chamfer surface of the rotating member aiding the forward surface of the rotating member to break apart the solids.
3 more elements
Dependencies are inferred from the claim text.