Mixing and delivery method arrangement and pump for supplying small particles suspended in a liquid to form slurry for delivery

Patent metadata

Field	Value
Publication number	US-10245567-B2
Application number	US-201515532758-A
Country	US
Kind code	B2
Filing date	Dec 10, 2015
Priority date	Dec 12, 2014
Publication date	Apr 2, 2019
Grant date	Apr 2, 2019

Abstract

A mixing arrangement, and pump for supplying small particles suspended in a liquid to form slurry for delivery includes a container, a mixing and delivery pump having a first shaft, a rotor connected to the first shaft and arranged at an inner bottom of an inner space of the container, a first power device connected to the first shaft, and a stator having stator blades. The stator surrounds the first shaft. The arrangement includes a pump having an inlet, which is located in a stator space between two stator blades, and an outlet, and an outlet pipe having a second inlet opening connected to the outlet and a second outlet opening located outside the inner space.

First claim

The invention claimed is:

1. A mixing and delivery arrangement for supplying small particles suspended in a liquid to form a slurry for delivery, the mixing and delivery arrangement comprising:
a container having an open top, an inner bottom and an inner wall limiting an inner space;
a mixing and delivery pump having:
a first shaft having a first distal end and a first proximal end;
a rotor connected to the first distal end of the first shaft and arranged at the inner bottom of the inner space of the container;
a first power device connected to the first proximal end of the first shaft so that the rotor is rotatable about a first rotation axis by means of the first power device, wherein the first power device is located outside the inner space of the container;
a stator having stator blades, wherein the stator coaxially surrounding the first shaft and wherein the stator being arranged at least partly between the first distal end of the first shaft and the proximal end of the first shaft;
a pump having at least one inlet, which is located in a stator space between two stator blades of the stator, and an outlet; and
an outlet pipe having a second inlet opening connected to the outlet of the pump and a second outlet opening located outside the inner space of the container;

wherein the rotor comprises a rim member that is coaxial with the first shaft and a plurality of rotor blades extending between the first shaft and the rim member, each rotor blade being in the form of a flat elongated plate member that is tilted and/or twisted with respect to a first reference plane perpendicular to the first rotation axis of the first shaft, each rotor blade extending perpendicularly with respect to the first rotation axis of the first shaft between the first shaft and the rim member, wherein the distance between a leading edge of each rotor blade and the inner bottom of the container being smaller than the distance between a trailing edge of each rotor blade and the inner bottom of the container,
wherein the container comprises an inner space, which has the form of a cylinder or a truncated cone, wherein the inner space is axially limited at one end by the inner bottom, which is circular, and radially limited by the inner wall, and the rotor has a diameter that is between about 85% and about 95% of the diameter of the inner bottom of the container,
wherein the pump of the mixing and delivery pump is located in the stator space between two stator blades of the stator, the pump having an impeller connected to a second distal end of a second shaft having a second proximal end connected to a second power device for rotating the impeller about a second rotation axis, and wherein the pump has a pump housing for housing the impeller, wherein the inlet, which is located in a stator space between two stator blades of the stator, is provided in the pump housing in the form of an axial inlet, and wherein the outlet of the pump is provided in the pump housing in the form of a tangential outlet,
wherein the second power device is located outside the inner space of the container.

2. A mixing and delivery pump for supplying small particles suspended in liquid contained in a container to form a slurry for delivery, the mixing and delivery pump comprising:
a first shaft having a first distal end and a first proximal end;
a rotor connected to the first distal end of the first shaft;
a first power device connected to the first proximal end of the first shaft so that the rotor is rotatable about a first rotation axis by means of the first power device;
a stator having stator blades, wherein the stator coaxially surrounds the first shaft and wherein the stator is arranged at least partly between the first distal end of the first shaft and the proximal end of the first shaft;
a pump having at least one inlet which is located in a stator space between two stator blades of the stator, and an outlet;
an inlet pipe having a first inlet opening located at a level of the first power device and a first outlet opening located at least partly in a stator space between two stator blades; and
an outlet pipe having a second inlet opening connected to the outlet of the pump and a second outlet opening located at a level of the first power means,
wherein the pump includes an impeller connected to a second distal end of a second shaft having a second proximal end connected to a second power device for rotating the impeller about a second rotation axis, wherein the pump has a pump housing for housing the impeller, wherein the inlet is provided in the pump housing in the form of an axial inlet, and wherein the outlet of the pump is provided in the pump housing in the form of a tangential outlet.

3. The mixing and delivery pump according to claim 2 , further comprising:
an inlet pipe having a first inlet opening located at a level of the first power device and a first outlet opening at least partly in a stator space between two stator blades.

4. The mixing an delivery pump according to claim 2 , wherein the stator extends in a direction along the first rotation axis a first distance and the rotor extends in a direction along the first rotation axis a second distance that is shorter than the first distance.

5. The mixing an delivery pump according to claim 2 , wherein the stator has a diameter that is between about 85% and about 100% of the diameter of the rotor.

6. The mixing and delivery pump according to claim 2 , wherein the distance between the rotor and the inlet of the pump housing is between about 1% and about 35% of the diameter of the rotor, wherein the distance is measured in parallel with the first rotation axis.

7. The mixing and delivery pump according to claim 2 , wherein the mixing and delivery pump has a weight that is less than 35 kilograms.

Assignees

• Outotec Finland Oy

Inventors

• Kaartinen Jani

Classifications

• B01F7/00358

  Operations & Transport · mapped topic

• B01F15/0283

  Operations & Transport · mapped topic

• B01F5/104

  Operations & Transport · mapped topic

• B01F15/00207

  Operations & Transport · mapped topic

• B01F2003/1285

  Operations & Transport · mapped topic