SCREEN CLAMP WITH INTEGRATED CENTER FEED

• US 20120329630A1
• Filed: 06/24/2011
• Published: 12/27/2012
• Est. Priority Date: 06/24/2011
• Status: Active Grant

• Current Assignee: The Western States Machine Company
• Original Assignee: The Western States Machine Company
• Inventors: Hoffmann, Jeffrey R.
• Granted Patent: US 8,647,505 B2
• Time in Patent Office: Days
• US Class Current: 494/36
• CPC Class Codes: B04B 11/06 Arrangement of distributors or collectors in centrifuges
• CPC Class Codes: B04B 3/00 Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering
• CPC Class Codes: B04B 7/16 Sieves or filters filters in general B01D; sieves in general B07B

Abstract

A screen clamp with integrated center feed is disclosed. The screen clamp may be rotatably mounted in a continuous centrifuge. The screen clamp may comprise: a feed cone having a base and sidewall, wherein a center of the base has a feed opening and the sidewall has one or more discharge openings; and an outer flange attached to and extending along a bottom edge of the feed cone, wherein the outer flange is configured to secure a basket filtering screen of a continuous centrifuge to a basket. The screen clamp may be configured to direct a massecuite feed entering the feed opening through the one or more discharge openings and onto the basket filtering screen. The screen clamp may also comprise a weir.

Claims

1. A screen clamp with integrated center feed comprising:

a) a feed cone having a base and sidewall, wherein a center of the base has a feed opening and the sidewall has one or more discharge openings; and

b) an outer flange attached to and extending along a bottom edge of the feed cone, wherein the outer flange is configured to secure a basket filtering screen of a continuous centrifuge to a basket,

wherein the screen clamp is configured to direct a massecuite feed entering the feed opening through the one or more discharge openings and onto the basket filtering screen.

2. The screen clamp of claim 1, wherein the screen clamp further comprises a channel formed between an inner side of the outer flange and an exterior side of the feed cone.

3. The screen clamp of claim 1, wherein the outer flange has an upper weir edge.

4. The screen clamp of claim 1, wherein the feed cone is frusto-conical in shape.

5. The screen clamp of claim 1, further comprising one or more fastener openings in the base.

6. The screen clamp of claim 5, wherein the one or more fastener openings are configured to permit the screen clamp to be fastened to a basket hub.

7. The screen clamp of claim 1, wherein the one or more discharge openings are formed along the bottom edge of the sidewall.

8. A continuous centrifuge comprising a centrifuge housing and a center feed arrangement disposed in the centrifuge housing, wherein the center feed arrangement comprises:

a basket hub;

a basket rotatable around a vertical axis and attached to the basket hub;

a basket filtering screen attached to the basket;

a screen clamp that fastens the basket filtering screen to the basket, the screen clamp comprising;

a feed cone having a base and at least one sidewall extending downwardly from the base, wherein a center of the base comprises at least one feed opening and the bottom of the sidewall comprise one or more discharge openings; and

an outer flange attached to and extending along a bottom edge of the feed cone;

a center feed pipe positioned to feed massecuite to the center of rotation of the conical screening basket;

wherein the center feed arrangement is configured to direct a massecuite feed through the feed opening of the screen clamp and through the one or more discharge openings of the screen clamp to the conical screening basket.

9. The continuous centrifuge of claim 8, wherein the screen clamp further comprises one or more fastener openings in the base.

10. The continuous centrifuge of claim 9, wherein the one or more fastener openings are configured to permit the screen clamp to be fastened to the basket hub.

11. The continuous centrifuge of claim 8, wherein the screen clamp further comprises a channel formed between an inner side of the outer flange and an exterior side of the feed cone.

12. The continuous centrifuge of claim 8, wherein the outer flange has an upper weir edge.

13. The continuous centrifuge of claim 8, wherein the feed cone is frusto-conical in shape.

14. The continuous centrifuge of claim 8, wherein the one or more discharge openings are formed along the bottom edge of the sidewall.