High capacity filtering screen

Patent metadata

Field	Value
Publication number	US-2016101377-A1
Application number	US-201414892944-A
Country	US
Kind code	A1
Filing date	Dec 10, 2014
Priority date	Dec 10, 2013
Publication date	Apr 14, 2016
Grant date	—

Abstract

A filtering assembly includes a screen housing having two sidewalls and two end walls, defining a perimeter with a length and a width. The screen housing also includes a top face and a bottom face. A plurality of screen segments are positioned on the top face of the screen housing, such that the plurality of screen segments on the top face provide a screening surface area less than a total surface area of the top face, and a plurality of screen segments are positioned on the bottom face of the screen housing, such that the plurality of screen segments on the bottom face provide a screening surface area less than a total surface area of the bottom face. A total screening surface area of the filtering assembly is greater than the total surface area of the top face.

First claim

What is claimed is:

1 . A filtering assembly comprising:
a screen housing having two sidewalls and two end walls, defining a perimeter with a length and a width, a top face and a bottom face; a plurality of screen segments disposed on the top face of the screen housing, the plurality of screen segments on the top face providing a screening surface area less than a total surface area of the top face; a plurality of screen segments disposed on the bottom face of the screen housing, the plurality of screen segments on the bottom face providing a screening surface area less than a total surface area of the bottom face, wherein a total screening surface area of the filtering assembly is greater than the total surface area of the top face.

2 . The filtering assembly of claim 1 , wherein the plurality of screen segments disposed on the top face and the bottom face are discrete.

3 . The filtering assembly of claim 1 , further comprising a plurality of transverse ribs spanning the width of the screen housing and each rib extending from the top face to the bottom face of the screen housing.

4 . A filtering assembly comprising:
a screen housing having two sidewalls and two end walls, defining a perimeter with a length and a width, a top face and a bottom face; a first pair of ribs disposed within the perimeter, spanning the width of the screen housing and each rib extending from the top face to the bottom face of the screen housing; a first opening located on the top face of the screen housing defined by a first rib and a second rib of the first pair of ribs; and a second opening located on the bottom face of the screen housing defined by the first rib and the second rib of the first pair of ribs, wherein a width of the first opening is different from a width of the second opening.

5 . The filtering assembly of claim 4 , further comprising:
a second pair of ribs disposed within the perimeter of the screen housing adjacent the first pair of ribs, the second pair of ribs spanning the width of the screen housing and each rib extending from the top face to the bottom face of the screen housing; a third opening located on the top face of the screen housing defined by a first rib and a second rib of the second pair of ribs; and a fourth opening located on the bottom face of the screen housing defined by the first rib and the second rib of the second pair of ribs, wherein a width of the third opening is different from a width of the fourth opening.

6 . The filtering assembly of claim 5 , further comprising:
a fifth opening located on the top surface of the screen housing defined by the second rib of the first pair of ribs and the first rib of the second pair of ribs; and a sixth opening located on the bottom surface of the screen housing defined by the second rib of the first pair of ribs and the first rib of the second pair of ribs, wherein a width of the fifth opening is different than a width of the sixth opening.

7 . The filtering assembly of claim 8 , wherein the width of the fifth opening is approximately equal to the width of the second opening and the width of the fourth opening.

8 . The filtering assembly of claim 8 , wherein the width of sixth opening is approximately equal to the width of the first opening and the width of the third opening.

9 . The filtering assembly of claim 8 , further comprising a first screen segment disposed over the first opening, a second screen segment disposed over the third opening, and a third screen segment disposed over the sixth opening, wherein the first opening is wider than the second opening.

10 . The filtering assembly of claim 6 , further comprising at least one screen segment disposed on the top face of the screen housing and at least one screen segment disposed on the bottom face of the screen housing, such that the filtering assembly includes at least two screening levels.

11 . A filtering assembly comprising:
a first screen housing having two sidewalls and two end walls, defining a first perimeter with a first length and a first width, a top face, and a bottom face; a plurality of transverse ribs spanning the first width of the first screen housing extending from the top face to the bottom face of the first screen housing, wherein adjacent transverse ribs have opposing side-faces that are positioned such that, when viewed from a longitudinal cross-section, both opposing side-faces of the adjacent transverse ribs form an acute angle α between each of the opposing side-faces and one of the top face and the bottom face of the first screen housing, and both opposing side-faces of adjacent transverse ribs form an obtuse angle β between each of the opposing side-faces and an opposite of the one of the top face and the bottom face.

12 . The filtering assembly of claim 11 , further comprising a second housing coupled to the bottom face of the first housing, the second housing comprising:
two sidewalls and two end walls, defining a defining a second perimeter with a second length and a second width; a plurality of longitudinal beams spanning the second length of the second housing; a plurality of transverse beams spanning the second width of the second housing, wherein the plurality of transverse beams are aligned with the plurality of transverse ribs.

13 . The filtering assembly of claim 12 , wherein the first and second housings are mechanically fastened together.

14 . The filtering assembly of claim 12 , further comprising an extension disposed along a length of a bottom edge of at least one transverse rib.

15 . The filtering assembly of claim 14 , wherein the second housing further comprises a groove having a profile to receive the extension disposed along the length of the bottom edge of at least one transverse rib proximate the bottom face of the first screen housing.

16 . The filtering assembly of claim 15 , wherein the extension disposed along the length of the bottom edge of at least one transverse rib is configured to slide into the groove, thereby coupling the first housing to the second housing.

17 . The filtering assembly of claim 12 , further comprising:
a first plurality of screen segments disposed on the first screen housing across a width between the adjacent transverse ribs forming the acute angle α between each of the opposing side-faces and the top face of the first screen housing; a second plurality of screen segments disposed on the second screen housing across a width between the plurality of transverse beams that align with the transverse ribs of the first housing having opposing side-faces of the adjacent transverse ribs forming the acute angle α between each of the opposing side-faces and the bottom face of the second screen housing.

18 . The filtering assembly of claim 17 , wherein the second plurality of screen segments is disposed on a top face of the second screen housing, between the first and second screen housings.

19 . The filtering assembly of claim 11 , further comprising a first and second plurality of screen segments disposed across the opposing side-faces of the adjacent transverse ribs forming the acute angle α between each of the opposing side-faces and the top and bottom faces of the first screen housing, respectively.

20 . The filtering assembly of claim 11 , further comprising a third housing coupled to the top face of the first housing.

21 . A method comprising:
forming a first screen housing having two first sidewalls and two first end walls, defining a first p

Assignees

• Mi Llc
• United Wire Ltd Uk Ltd

Inventors

• Cady Eric
• Robertson Graham Alexander
• Moore Latosha
• Mclean Claire Rosaleen Galloway
• Ralph Andrew

Classifications

• B07B1/4636 Primary

  Regulation of screen apertures · CPC title

• B01D29/05 Primary

  supported · CPC title

• B01D29/56

  in series connection · CPC title

• B01D29/012 Primary

  Making filtering elements (making bag, cage, hose, tube, sleeve or like filtering elements B01D29/111) · CPC title

• B07B1/46

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