Carr, Robert Bret

United States of America

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B04B 11/08 - Skimmers or scrapers for discharging 2
B04B 11/05 - Base discharge 1
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1.

Gas driven solids discharge and pumping piston for a centrifugal separator

      
Application Number 11218280
Grant Number 07618361
Status In Force
Filing Date 2005-09-01
First Publication Date 2007-03-01
Grant Date 2009-11-17
Owner CARR, ROBERT BRET (USA)
Inventor Carr, Robert B.

Abstract

A centrifugal separator includes a cylindrical bowl having a conical lower end with an opening through which feed liquid is injected during a feed mode of operation. During the feed mode, solids separate from the feed liquid and accumulate along the inner surface of the bowl as the bowl rotates at high speed. After accumulation of the solids, the rotation of the bowl is stopped and residual liquid is drained by gravity from the bowl. In a solids discharge mode of operation, a piston of a piston assembly is urged downward along a vertical axis in response to fluid such as compressed gas or hydraulic liquid. The downward movement of the piston forces accumulated solids from the bowl via the opening in the conical lower end thereof. The solids pass from the bowl and into a passage leading to an outlet port, where the solids exit the separator.

IPC Classes  ?

  • B04B 11/08 - Skimmers or scrapers for discharging

2.

Conical piston solids discharge and pumping centrifugal separator

      
Application Number 10973949
Grant Number 07261683
Status In Force
Filing Date 2004-10-26
First Publication Date 2005-10-20
Grant Date 2007-08-28
Owner CARR, ROBERT BRET (USA)
Inventor Carr, Robert B.

Abstract

A centrifugal separator includes a cylindrical bowl having a conical lower end with an opening through which feed liquid is injected during a feed mode of operation. The feed liquid is separated into centrate and solids, which accumulate along the inner surface of the bowl. A piston assembly includes a conical piston disposed within the cylindrical bowl, coupled to a piston actuator by a two-part piston shaft. During the feed mode of operation, the piston shaft is disconnected, and the piston is held in an uppermost position by hydraulic pressure from the feed liquid as the bowl is rotated, and a centrate valve on the piston is opened to permit the centrate to flow out to a centrate discharge port. After solids are separated and accumulated on an interior surface of the bowl, the rotation of the bowl is stopped and residual centrate is drained therefrom. In a solids discharge and pumping mode of operation, the piston shaft is connected and the piston actuator urges the piston axially downward, closing the centrate valve and forcing the accumulated solids from the bowl via the opening in the conical lower end of the bowl and into a passage leading to a solids outlet port.

IPC Classes  ?