Method and apparatuses for screening

Patent metadata

Field	Value
Publication number	US-10363577-B2
Application number	US-201815873582-A
Country	US
Kind code	B2
Filing date	Jan 17, 2018
Priority date	Mar 21, 2007
Publication date	Jul 30, 2019
Grant date	Jul 30, 2019

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 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;
a guide assembly having at least one mating surface; and
a screen assembly having a support structure including side members and a guide surface configured to mate with the at least one mating surface of the guide assembly, 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.

2. The vibratory screening machine of claim 1 , further comprising a vibratory apparatus secured to the vibratory screening machine and configured to vibrate the screen assembly.

3. The vibratory screening machine of claim 1 , wherein the vibratory apparatus is a vibratory motor.

4. The vibratory screening machine according to claim 1 , wherein the guide surface is a notch formed on a corner of the support structure.

5. The vibratory screening machine according to claim 1 , wherein the guide surface is formed generally centrally in at least one of the side members of the support structure.

6. The vibratory screening machine according to claim 1 , wherein the guide surface is configured to mate with the at least one mating surface of the guide assembly.

7. The vibratory screening machine according to claim 6 , wherein the guide surface is located such that it guides the screen assembly into a predetermined position when mated with the at least one mating surface of the guide assembly.

8. The vibratory screening machine of claim 1 , wherein the support structure is an apertured plate and the side members are flanges that extend from the plate.

9. The vibratory screening machine of claim 1 , wherein the screening material includes at least two layers of wire mesh.

10. The vibratory screening machine of claim 1 , wherein the screening material is at least one of flat and undulating.

11. 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, a concave support surface located between the first and second wall members, a guide assembly having at least one mating surface; and a screen assembly having a support structure including side members and a guide surface configured to mate with the at least one mating surface of the guide assembly, 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.

12. The method of claim 11 , 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 step with another screen assembly.

13. The method of claim 11 , wherein the support structure is an apertured plate and the side members are flanges that extend from the plate.

14. The method of claim 11 , wherein the screening material includes at least two layers of wire mesh.

15. The method of claim 11 , wherein the screening material is at least one of flat and undulating.

16. The method of claim 11 , 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

• B07B1/4645 Primary

  Screening surfaces built up of modular elements · CPC title

• B07B1/4618

  Manufacturing of screening surfaces · CPC title

• B07B2201/02

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

• B07B1/485 Primary

  Devices for alternately stretching and sagging screening surfaces · CPC title

• B07B1/49

  stretching more than one screen or screen section by the same or different stretching means · CPC title