Method and apparatuses for screening

Patent metadata

Field	Value
Publication number	US-9914153-B2
Application number	US-201615148854-A
Country	US
Kind code	B2
Filing date	May 6, 2016
Priority date	Mar 21, 2007
Publication date	Mar 13, 2018
Grant date	Mar 13, 2018

Abstract

A screening machine includes wall members, screen assembly guide members, a screen assembly and a compression assembly. The screen assembly includes a frame with a plurality of side members and a screen supported by the frame. The compression assembly is attached to at least one wall member and forms the screen assembly into a concave shape.

First claim

What is claimed is:

1. A vibratory screen assembly for separating materials, comprising:
a support structure having side members; and
a screening material having a top surface configured to receive materials to be screened and a bottom surface secured to the support structure;
wherein the vibratory screen assembly includes a central portion between the side members that forms a generally concave shape relative to the materials to be screened when a compression force is applied against at least one of the side members.

2. The vibratory screen assembly of claim 1 , wherein the support structure is an apertured plate and the side members are flanges that extend from the plate.

3. The vibratory screen assembly of claim 1 , wherein the screening material includes at least two layers of wire mesh.

4. The vibratory screen assembly of claim 1 , wherein the screening material is at least one of flat and undulating.

5. The vibratory screen assembly of claim 1 , wherein the support structure includes a plate and the side members are at least one of flanges, tubes, formed box members, channels, plates, beams, and pipes, respectively.

6. A vibratory screening machine, comprising:
a first wall member having a compression assembly attached thereto;
a second wall member opposite the first wall member;
a concave support surface located between the first and second wall members; and
a screen assembly including a support structure having side members and a screening material secured to the support structure,
wherein the compression assembly is configured to assert a force against at least one of the side members and deform the screen assembly into a concave shape against the concave support surface.

7. The vibratory screening machine of claim 6 , further comprising a vibratory apparatus secured to the vibratory screening machine and configured to vibrate the screen assembly.

8. The vibratory screening machine of claim 7 , wherein the vibratory apparatus is a vibratory motor.

9. The vibratory screening machine of claim 6 , wherein the support structure is an apertured plate and the side members are flanges that extend from the plate.

10. The vibratory screening machine of claim 6 , wherein the screening material includes at least two layers of wire mesh.

11. The vibratory screening machine of claim 6 , wherein the screening material is at least one of flat and undulating.

12. The vibratory screening machine of claim 6 , wherein the support structure includes a plate and the side members are at least one of flanges, tubes, formed box members, channels, plates, beams, and pipes, respectively.

13. A method for screening a material, comprising:
placing a screen assembly on a vibratory screening machine, the vibratory screening machine including a first wall member having a compression assembly attached thereto, a second wall member opposite the first wall member, and a concave support surface located between the first and second wall members, the screen assembly including a support structure having side members, and a screening material secured to the support structure;
securing the screen assembly to the vibratory screening machine by pushing the compression assembly against at least one of the side members thereby deforming the screen assembly into a concave shape against the concave support surface; and
screening the material.

14. The method of claim 13 , further comprising:
releasing the compression assembly such that the screen assembly is no longer compressed;
replacing the screen assembly with another screen assembly; and
performing the securing step with another screen assembly.

15. The method of claim 13 , wherein the support structure is an apertured plate and the side members are flanges that extend from the plate.

16. The method of claim 13 , wherein the screening material includes at least two layers of wire mesh.

17. The method of claim 13 , wherein the screening material is at least one of flat and undulating.

18. The method of claim 13 , wherein the support structure includes a plate and the side members are at least one of flanges, tubes, formed box members, channels, plates, beams, and pipes, respectively.

Assignees

• Derrick Corp

Inventors

• Wojciechowski Keith
• Newman Christian

Classifications

• B07B1/48 Primary

  Stretching devices for screens · CPC title

• B07B1/4609

  constructional details of screening surfaces or meshes · CPC title

• B07B2201/02

  Fastening means for fastening screens to their frames which do not stretch or sag the screening surfaces · CPC title

• B07B1/28

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

• B07B1/485 Primary

  Devices for alternately stretching and sagging screening surfaces · CPC title