Sweco, Incorporated

Gene A Huber

Bill A Racine

Bradley N Jones

Jon A Knartzer

Robert J Harris

Ronald P Cram

Marvin D Hixson

Separating equipment having a partially submerged vibratory screen in a screening device wherein oversized particles are induced to flow in a spiral direction outwardly from a central submerged area of the screen. A low velocity inlet manifold is employed centrally above the screen and a spray mechanism directs clearing spray to a peripheral area outwardly of the submerged portion of the screen. The screen is submerged by means of a chamber which extends outwardly above the lower most portion of the concaved partially submerged screen. The preferred embodiments specifically contemplates the screening of water borne wood pulp for the paper industry.

Pulp screen

A vibratory screen structure which is rectangular in plan employing pretensioned screen panels and a pneumatic tube seal beneath the panels. Restraining members are positioned on two sides of the screen panels to hold the screen frames in position on the pneumatic tubes when sealed. The remaining sides are unrestrained and bow under the pressure of the pneumatic tubes to create a crown in each screen panel.

Vibratory screen separator

A screening device having an inflatable screen frame and a rigid screen frame member. The frame assembly expands with inflation in a self-controlled manner to tension the associated screen cloth and to fix the frame within the screening device. A method of making screen assemblies is also disclosed using heated screen cloth to fuse the frame thereto.

Screening device

A degasser system having a central container and degasser tubes extending to the central container. A vacuum is maintained within the tubes and the container by means of a vacuum pump while liquid is extracted from the central container by a pump. A gas cut liquid is drawn into the tubes by vacuum and conditioned to assume a helical path through the tubes. The liquid is then dispersed into the tank where it is allowed to collect. The degasser intake is throttled as a function of the level of liquid within the container. The accumulated gas within the degasser is extracted from a central location in one of the tubes. The pump includes a housing for total emersion of the pump body, dual inlets, straight, radial impeller vanes, multiple volutes and an extended drive shaft to accommodate gas cut mud.

Method and apparatus for degassing liquids

A device employed with a vibratory apparatus such as a mill or the like which is used to change the lead angle between rotating eccentric weights. Eccentric weights are mounted at either end of a drive motor and caused to rotate with the motor shaft at specific angles with respect to one another to develop a specific vibratory action. At one end, the eccentric weight is fixedly mounted on the shaft. At the other end, the weight is rotatably mounted on the shaft. A stop mechanism is associated with the shaft adjacent the rotatably mounted weight to prevent the weight from pivoting through more than a predetermined angle. By rotating the motor and shaft in a first direction, the rotatably mounted weight assumes a position on the shaft at a first stop. When the motor is reversed, the rotatably mounted weight swings to a position at a second stop. A spring is employed to bias the rotatably mounted weight against the first stop and acts to prevent damaging impact of the weight against the second stop when the motor is reversed. Provision is made for facilely varying the bias load of the spring and for quickly changing the location of the stops such that a wide variety of loads and operating conditions can be created and accomodated.

Growing community of inventors

Los Angeles, CA, United States of America

Gene A Huber