Shaker screen assembly

Patent metadata

Field	Value
Publication number	US-10214978-B2
Application number	US-201715688216-A
Country	US
Kind code	B2
Filing date	Aug 28, 2017
Priority date	Jun 11, 2012
Publication date	Feb 26, 2019
Grant date	Feb 26, 2019

Abstract

A scalping insert includes a scalping surface having a plurality of scalping slots therethrough, and a vertical base portion. A shaker screen assembly includes a screen frame having at least one slot. A scalping insert is positioned in the at least one slot of the screen frame. Processing fluid using a shaker screen assembly includes providing a flow of fluid to the shaker screen assembly and flowing the fluid through both a scalping surface and a screen surface of a single shaker screen deck.

First claim

What is claimed is:

1. An apparatus comprising
a screen frame having a screening surface provided by an array of openings separated by transverse ribs; and
a scalping surface having a plurality of openings formed therethrough;
a vertical base portion contacting the screen surface of the screen frame such that the vertical base portion connects the scalping surface to the screen frame; and
a scalping surface support member disposed vertically between the scalping surface and the vertical base portion such that the scalping surface support member spaces the scalping surface a vertical height above the screening surface of the screen frame.

2. The apparatus of claim 1 , further comprising:
sidewalls on each end of the scalping surface, wherein the sidewalls further comprise angled inner surfaces to direct fluid to the plurality of openings in the scalping surface.

3. The apparatus of claim 1 , further comprising:
a center divider having an angled surface directed to the plurality of openings in the scalping surface.

4. The apparatus of claim 1 , wherein the plurality of openings in the scalping surface has a trapezoidal or rectangular cross-section geometry, the cross-section being taken perpendicularly to the longitudinal axis of the openings in the scalping.

5. The apparatus of claim 1 , wherein the vertical base portion is configured to correspond with and be inserted into a first rib slot provided on the screening surface of the screen frame.

6. The apparatus of claim 5 , further comprising: at least one scalping insert disposed in a second rib slot provided on the screening surface of the screen frame, wherein the at least one scalping insert is coupled to the scalping surface to form a modular scalping unit.

7. The apparatus of claim 1 , further comprising:
at least one seal disposed between the scalping surface and the screen frame.

8. The apparatus of claim 1 , further comprising:
a screen mesh on at least one of a portion of the screening surface of the screen frame and a portion of the scalping surface.

9. The apparatus of claim 1 , wherein the vertical base portion is removable from the screen frame and the screening surface.

10. An apparatus comprising:
a frame having a first side and second side, a first end and a second end,
a screening surface coupled to the frame and extending between the first side and the second side, and between the first end and the second end; and
a scalping surface extending between the first side and the second side, and between the first end and the second end, the scalping surface positioned a vertical height above the screening surface and horizontally aligned with the screening surface, the scalping surface removable from the screening surface coupled to the frame;
a vertical base portion coupled between the frame and the scalping surface, the vertical base portion having a total length that is greater than a total height of the vertical base portion and greater than a total width of the vertical base portion; and
a scalping surface support member provided between the scalping surface and the vertical base portion, the scalping surface support member having a total length that is greater than a total height of the scalping surface support member and greater than a total width of the scalping surface support member
wherein the total length of the scalping surface support member is greater than the total length of the vertical base portion.

11. The apparatus of claim 10 , wherein the base portion is removable from the frame and the screening surface.

12. The apparatus of claim 10 , wherein at least one of the scalping surface and the screening surface comprises a mesh screen.

13. The apparatus of claim 10 , wherein the scalping surface comprises a first mesh screen and the screening surface comprises a second mesh screen, and wherein the first mesh screen covers a majority of an area defined between first end, the second end, the first side, and the second side, and wherein the second mesh screen covers a majority of the area.

14. The apparatus of claim 10 , further comprising a plurality of mechanical fasteners coupled between the base portion and the screen frame.

15. A method comprising:
forming a frame having an array of openings separated by transverse ribs;
providing the frame with a screening surface;
providing the frame with a scalping surface independently from the providing the frame with a screening surface, thereby forming a screen assembly, the scalping surface positioned a vertical height above the screening surface;
providing a vertical base portion between the frame and the scalping surface, wherein the base portion is removable from the frame and the screening surface and has a total length that is greater than a total height of the vertical base portion and greater than a total width of the vertical base portion; and
providing a scalping surface support member between the scalping surface and the vertical base portion, wherein the scalping surface support member has a total length that is greater than a total height of the scalping surface support member and greater than a total width of the scalping surface support member, and
further wherein the total length of the scalping surface support member is greater than the total length of the vertical base portion.

16. The method of claim 15 , further comprising disposing a mesh screen on the scalping surface.

17. The method of claim 15 , further comprising flowing a fluid through the screen assembly to screen the fluid twice in a single pass through the screen assembly.

18. The method of claim 15 , further comprising attaching a first mesh screen to the screening surface and attaching a second mesh screen to the scalping surface, wherein the second mesh screen of the scalping surface covers a majority of the first mesh screen of the screening surface.

Assignees

• Mi Llc

Inventors

• Cady Eric
• Carr Brian S

Classifications

• B07B1/4645 Primary

  Screening surfaces built up of modular elements · CPC title

• B07B1/46 Primary

  Constructional details of screens in general; Cleaning or heating of screens · CPC title

• B07B1/28

  Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens · CPC title

• B07B1/4618

  Manufacturing of screening surfaces · CPC title

• B07B1/4609

  constructional details of screening surfaces or meshes · CPC title