Support for tensioned screening media

Patent metadata

Field	Value
Publication number	US-9962739-B2
Application number	US-201515543520-A
Country	US
Kind code	B2
Filing date	Jan 16, 2015
Priority date	Jan 16, 2015
Publication date	May 8, 2018
Grant date	May 8, 2018

Abstract

An elongate capping is arranged to support cross-tensioned or pre-tensioned screening media at a screen deck. The capping includes a pair of arms to grip a carrier beam of the screen deck and a head attached to the arms via a neck. The head includes flexible widthwise extending flanges that are configured to bend and compress towards the arms to support the screening media when mounted on the head under tension.

First claim

The invention claimed is:

1. An elongate capping arranged to support tensioned screening media at a screen deck, the capping comprising:
a pair of opposed, spaced apart arms between which is defined a channel to receive and mount the capping on a longitudinal carrier beam of the screen deck;
a neck provided at one end of and forming a bridge between the arms; and
a head provided at the neck and having flexible flanges that extend laterally outward from the neck, the flanges being configured to flex and resiliently compress towards the arms to support the screening media when mounted under tension on the head.

2. The capping as claimed in claim 1 , wherein the head includes a media contact surface that extends over the flanges, the contact surface being concave in a lateral widthwise direction of the head between respective endmost edges of the flanges.

3. The capping as claimed in claim 1 , wherein the includes a media contact surface that extends over the flanges, the contact surface being inclined over each flange in a lateral widthwise direction of the head relative to a central region positioned over the neck.

4. The capping as claimed in claim 1 , wherein a distance by which each flange extends laterally outward from the neck is in a range 40 to 80% of a thickness of the neck in a lateral widthwise direction of the capping.

5. The capping as claimed in claim 4 , wherein the range is 50 to 70%.

6. The capping as claimed in claim 1 , wherein the flanges are separated from the arms in a height direction of the capping by a length of the neck in the height direction and a shoulder region of each arm at a junction with the neck is declined to slope downwardly away from each respective flange.

7. The capping as claimed in claim 1 , wherein a thickness of each flange in a height direction of the capping increases in a lateral widthwise direction of the head such that widthwise outer regions of the flanges are thicker than corresponding widthwise inner regions of the flanges that form a junction with the neck.

8. The capping as claimed in claim 1 , further comprising a plurality of fingers extending from each of the arms into the channel.

9. The capping as claimed in claim 8 , wherein the fingers are inclined to extend in a direction within the channel towards the neck.

10. The capping as claimed in claim 8 , comprising two arms and three fingers on each of the arms, the fingers being spaced apart in a height direction of the capping between a first end of each arm that is furthest from the neck and a second end of each arm connected to the neck.

11. The capping as claimed in claim 1 , wherein the capping is made of a flexible material such that the flanges are resiliently compressible towards the arms.

12. The capping as claimed in claim 8 , wherein the fingers are resiliently compressible towards each respective arm and/or the arms are resiliently expandable to open the channel to receive and mount the capping.

13. The capping as claimed in claim 11 , wherein the flexible material comprises a rubber or a polyurethane.

14. A screen deck comprising:
a frame having a plurality of carrier beams;
a tensioned screening media supported upon the carrier beams; and
a plurality of cappings mounted on the carrier beams to support in touching contact the screening media, each of the cappings including a pair of opposed, spaced apart arms between which is defined a channel to receive and mount the capping on the carrier beam, a neck provided at one end of and forming a bridge between the arms, and a head provided at the neck and having flexible flanges that extend laterally outward from the neck, the flanges being configured to flex and resiliently compress towards the arms to support the screening media when mounted under tension on the head.

15. The screen deck as claimed in claim 14 , wherein the screening media includes an open structure or a plurality of apertures to allow the downward passage of media, the open structure or apertures extending continuously along a length of the media in a direction perpendicular to the carrier beams such that the cappings are positioned directly below the open structure or apertures and are configured to blind the open structure or apertures at a region of the media immediately above each respective capping.

Assignees

• Sandvik Intellectual Property

Inventors

• Malmberg Mats
• Fransson Thomas

Classifications

• B07B1/46 Primary

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

• B07B1/36

  jigging or moving to-and-fro in more than one direction · CPC title

• B07B1/4609 Primary

  constructional details of screening surfaces or meshes · CPC title

• B07B1/48

  Stretching devices for screens · CPC title

• B07B1/4645

  Screening surfaces built up of modular elements · CPC title