Aggregate dewatering device and method

Patent metadata

Field	Value
Publication number	US-2016298904-A1
Application number	US-201615189605-A
Country	US
Kind code	A1
Filing date	Jun 22, 2016
Priority date	Feb 26, 2015
Publication date	Oct 13, 2016
Grant date	—

Abstract

A dewatering device for aggregate product can be used to retro-fit existing aggregate product dewatering facilities in order to more efficiently capture product. The dewatering device can be movable to allow for the portability of the device relative to existing dewatering facilities. The device is adapted to receive a slurry of aggregate product and water and to vibrate to dry the aggregate product. A recycle system is included to receive any fines that may otherwise be lost by the system. The recycle system captures the fines and redirects them back towards the vibrating process of the vibrating device to direct them towards an exit of the vibrating device in order to use said fines as well as the other dewatered aggregate product. The portability of the device allows the device to be used with the existing facilities without the need to completely replace existing components for dewatering aggregate product.

First claim

What is claimed is:

1 . A dewatering device for aggregate product, comprising:
a vibrating screen for receiving aggregate product from a conveyor, the vibrating screen having an entrance disposed to receive aggregate product, said vibrating screen including a vibrating system to move said screen; a recycle system positioned at least partially below the vibrating screen to receive fine materials passed through the screen and to aid in directing the fine materials back to the entrance of the vibrating screen, wherein the recycle system comprises: a reservoir member disposed to receive fine materials passed through the screen; a redirection apparatus comprising: a first inlet, the first inlet disposed to receive fine materials from the reservoir member; and a second inlet, the second inlet configured to receive a fluid from outside the reservoir member.

2 . The dewatering device of claim 1 , whereby the fluid carries fine materials received from the reservoir member back to the conveyor.

3 . The dewatering device of claim 2 , wherein the conveyor comprises a portion of a drying system.

4 . The dewatering device of claim 2 , wherein the conveyor comprises an inclined screw conveyor.

5 . The dewatering device of claim 1 , wherein said vibrating screen includes an exit for passing dewatered aggregate product.

6 . The dewatering device of claim 1 , wherein the vibrating system comprises one or more vibrating motors to linearly and horizontally move said vibrating screen.

7 . The dewatering device of claim 1 , wherein the vibrating system comprises a flywheel operatively connected to the vibrating screen to move said screen.

8 . The dewatering device of claim 1 , wherein the reservoir member comprises an underflume having an aperture, wherein the recycle system comprises a conduit operatively connected to the underflume, the conduit directing the fine materials in the underflume to the conveyor.

9 . The dewatering device of claim 8 , wherein the conduit is a hose for passing water and fine materials to the vibrating screen.

10 . The dewatering device of claim 9 , wherein the hose is in communication with the conveyor for passing water and fine materials from the recycle system to the conveyor, wherein the conveyor conveys the fine materials to the vibrating screen.

11 . The dewatering device of claim 1 , wherein the redirection apparatus comprises a nozzle.

12 . The dewatering device of claim 11 , wherein the redirection apparatus is configured to increase a velocity of the fluid and fine materials passing through the nozzle.

13 . The dewatering device of claim 11 , wherein a diameter of the nozzle decreases along a direction of fluid travel through the nozzle.

14 . The dewatering device of claim 1 , wherein the redirection apparatus is in fluid communication with a conduit, wherein fines are directed from the redirection apparatus to the vibrating screen.

15 . The dewatering device of claim 1 , whereby fine materials are redirected from below the vibrating screen to the entrance of the vibrating screen.

16 . The dewatering device of claim 1 , wherein the redirection apparatus is in fluid communication with the conveyor.

17 . The dewatering device of claim 16 , wherein the redirection apparatus communicates fluid from a first height lower than the vibrating screen to a second height, the second height being higher than the first height.

18 . The dewatering device of claim 17 , wherein the conveyor conveys the fine materials to a third height, the third height being higher than a height of the entrance of the vibrating screen, whereby the fine material falls by gravity from the conveyor onto the vibrating screen.

19 . The dewatering device of claim 10 , wherein the reservoir member has an outlet, and wherein the fine materials travel by gravity through the outlet and the first inlet into the redirection apparatus.

20 . The dewatering device of claim 10 , wherein the second inlet is in fluid communication with a water feed.

21 . The dewatering device of claim 10 , wherein the first inlet is configured to receive a slurry from the reservoir member, the slurry comprising water and the fine materials.

22 . A method of recycling fine materials through a vibrating screen, comprising:
receiving a slurry comprising fine materials and water from a lower portion of a vibrating screen; receiving a fluid from a secondary fluid source; and at least partially using the fluid, transferring the fine materials to an entrance of the vibrating screen.

23 . The method of claim 22 , wherein the step of transferring the fine materials to an entrance of the vibrating screen further comprises:
at least partially using the fluid, transferring the fine materials to a conveyor, the conveyor being configured to transfer the fine materials to the entrance of the vibrating screen.

24 . The method of claim 22 , further comprising:
forming a mixture of the fluid and the slurry; and increasing a velocity of the mixture.

25 . A method of recycling fine materials through a vibrating screen, comprising:
receiving a downward-moving slurry comprising fine materials and water from a vibrating screen; redirecting the fine materials generally upward; increasing a velocity of the fine materials; and transferring the fine materials to an entrance of the vibrating screen.

26 . The method of claim 25 , further comprising:
receiving a fluid from a secondary fluid source; and carrying the fine materials using the fluid.

27 . The method of claim 25 , further comprising:
transferring the fine materials to a conveyor, the conveyor being configured to transfer the fine materials to the entrance of the vibrating screen.

28 . The method of claim 26 , further comprising:
transferring the fine materials to a conveyor, the conveyor being configured to transfer the fine materials to the entrance of the vibrating screen.

Assignees

• Superior Industries

Inventors

• Squires Frank
• Brown Jeremy
• Afrank Chris

Classifications

• F26B17/266

  the materials to be dried being moved in a helical, spiral or circular path, e.g. vibrated helix · CPC title

• F26B5/00

  Drying solid materials or objects by processes not involving the application of heat (separating liquids from solids by straining B01D; replacing liquids in wet solids by other liquids, e.g. water by spirit, B01D12/00; drying by electrophoresis B01J) · CPC title

• F26B19/005

  Self-contained mobile devices, e.g. for agricultural produce (movable devices with radiation means F26B3/28; small self-contained devices for drying objects at rest F26B9/003) · CPC title

• B07B2230/01

  Wet separation · CPC title

• B01D33/27

  with rotary filtering surfaces, which are neither cylindrical nor planar, e.g. helical surfaces · CPC title