High density grout pump

• US 5,122,038 A
• Filed: 02/08/1991
• Issued: 06/16/1992
• Est. Priority Date: 02/13/1990
• Status: Expired due to Term

• Current Assignee: Inco Limited (Caixa de Previdência Dos Funcionários Do Banco Do Brasil)
• Original Assignee: Inco Limited (Caixa de Previdência Dos Funcionários Do Banco Do Brasil)
• Inventors: Malkoski, Michael L.
• Primary Examiner(s): Bertsch, Richard A.
• Assistant Examiner(s): KOCHAROV, MICHAEL
• Application Number:
  US07/652,794
• Time in Patent Office: 494 Days
• Field of Search: 417/205, 417/430, 417/900, 417/313, 418/48, 366/293, 366/295, 366/325, 366/328, 366/329, 285/311, 285/312
• US Class Current: 417/313
• CPC Class Codes: B01F 27/192 with dissimilar elements
• CPC Class Codes: B01F 27/2123 Shafts with both stirring means and feeding or discharging means
• CPC Class Codes: B01F 27/62 comprising liquid feeding, e.g. spraying means
• CPC Class Codes: B01F 27/70 with paddles, blades or arms
• CPC Class Codes: B01F 27/90 with paddles or arms
• CPC Class Codes: B01F 35/10 Maintenance of mixers
• CPC Class Codes: B01F 35/165 Making mixers or parts thereof
• CPC Class Codes: B01F 35/56 General build-up of the mixers
• CPC Class Codes: B01F 35/71775 using helical screws
• CPC Class Codes: B01F 35/754551 using helical screws
• CPC Class Codes: B28C 5/0862 Adaptations of mixing containers therefor, e.g. use of material, coatings
• CPC Class Codes: B28C 5/1276 with consecutive separate containers with rotating stirring and feeding or discharging means
• CPC Class Codes: B28C 5/16 the stirrers having motion about a vertical or steeply inclined axis with feeding or discharging means B28C5/12
• CPC Class Codes: F04C 11/005 of dissimilar working principle
• CPC Class Codes: F04C 13/001 Pumps for particular liquids
• CPC Class Codes: F04C 13/002 for homogeneous viscous liquids
• CPC Class Codes: F04D 13/12 Combinations of two or more pumps combinations with priming pumps or booster pumps to counteract vapour-lock F04D9/04
• CPC Class Codes: F04D 29/648 especially adapted for liquid pumps
• CPC Class Codes: F04D 3/02 of screw type
• CPC Class Codes: F04D 7/00 Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts F04D11/005, F04D29/22 take precedence
• CPC Class Codes: Y10S 417/90 : Slurry pumps, e.g. concrete

Abstract

A pump capable of shear mixing and supplying high density grout over long distances and through relatively narrow conduits. The pump includes a hopper, a series of agitators in the hopper and a coincident auger and rotor/stator disposed below the hopper. The pump is held together by a pair of side bars having quick release bear clamp clasps for expeditious disassembly.

Claims

1. A high density grout pump comprising a container, a rotatable container shaft extending into the container, the container including a hopper and a cone, a plurality of agitating means affixed to the shaft within the container, the container attached to an auger tube, a rotatable auger disposed within the auger tube, the auger including spiral threads and a plurality of shear blades, a rotor and a stator disposed within a stator housing, the stator housing affixed downstream of the auger tube to comprise therewith a lower pump housing, the auger and rotor coincident with a longitudinal axis extending therethrough, a plurality of removable apertured plates extending substantially perpendicular to the longitudinal axis, a first apertured plate and second apertured plate being disposed at opposite ends of the lower pump housing, an outlet affixed to the stator housing, and releasable clasp means for maintaining the auger, rotor and stator intact, the clasp means including a pair of side bars extending parallel with the auger tube and the stator housing, the side bars including notches disposed at opposing ends, and tabs on the first and second apertured plates extending through the notches in the side bars.

2. The pump according to claim 1 wherein a pivotal clasp is mounted on the side bar, the clasp including a box removably enveloping a tab extending from a plate.

3. The pump according to claim 1 wherein the interior of the cone and the interior of the auger tube are lined with a continuous elastic coating.

4. The pump according to claim 1 wherein the auger is coupled to a driving means by a square coupling and the rotor is coupled to the auger by a square coupling.

5. The pump according to claim 1 wherein an outer open quadrilateral paddle and an inner open quadrilateral paddle are affixed to the shaft, and the outer and inner paddles are oriented 90°

from one another.

6. The pump according to claim 5 wherein a plurality of container shear blades are spirally disposed about the container shaft.