Hydraulic classifiers

Patent metadata

Field	Value
Publication number	US-2018043370-A1
Application number	US-201715666871-A
Country	US
Kind code	A1
Filing date	Aug 2, 2017
Priority date	Aug 9, 2016
Publication date	Feb 15, 2018
Grant date	—

Abstract

Hydraulic classifiers are provided for sorting material using injected water. Some embodiments include upper and lower housings having different cross-sectional shapes. In some embodiments, certain improvements are provided for cleanout and/or removal or replacement of teeter bars.

First claim

1 . A hydraulic classifier, comprising:
a housing including an upper housing and a lower housing; an overflow outlet supported on said upper housing; a feed inlet disposed to receive aggregate material into said upper housing; a water injection system, the water injection system comprising:
a conduit;
a plurality of teeter bars in fluid communication with said conduit, each of said plurality of teeter bars being fluidly coupled to said conduit via a selectively disengageable coupling; and
an underflow outlet in fluid communication with said lower housing.

2 . The hydraulic classifier of claim 1 , wherein each of said plurality of teeter bars is at least partially supported by said selectively disengageable coupling.

3 . The hydraulic classifier of claim 1 , wherein said selectively disengageable coupling comprises a flanged connection, wherein each of said plurality of teeter bars is at least partially supported by said flanged connection.

4 . The hydraulic classifier of claim 3 , wherein said flanged connection is disposed inside said housing.

5 . The hydraulic classifier of claim 4 , wherein said conduit is disposed outside said housing.

6 . The hydraulic classifier of claim 1 , wherein said upper housing has a rectangular cross-section, and wherein said lower housing has a circular cross-section.

7 . The hydraulic classifier of claim 1 , wherein each said teeter bar comprises a plurality of valves, wherein each said valve comprises a duckbill valve.

8 . The hydraulic classifier of claim 1 , further comprising:
an underflow valve; and an actuator disposed to selectively at least partially close said underflow valve, wherein said actuator is a hydraulic actuator.

9 . The hydraulic classifier of claim 1 , wherein each said teeter bar comprises a horizontally-extending cylindrical portion comprising a polymer.

10 . The hydraulic classifier of claim 9 , wherein said polymer comprises high-density polyethylene.

11 . The hydraulic classifier of claim 1 , further comprising:
a plurality of valves, each said valve having an open configuration and a closed configuration, each said valve being associated with and aligned with one of said teeter bars, each said valve permitting access to at least one of said teeter bars in the open configuration.

12 . The hydraulic classifier of claim 1 , further comprising,
a pipe extending through said housing, said pipe fluidly coupling said selectively disengageable coupling to said conduit.

13 . The hydraulic classifier of claim 1 , further comprising,
a lower support, at least one of said teeter bars being at least partially supported on said lower support, a removable upper support, wherein at least one of said teeter bars is removable upon removal of said removable upper support and disengagement of said selectively disengageable coupling.

14 . A hydraulic classifier, comprising:
a housing including an upper housing and a lower housing, said upper housing having a first sidewall and a second sidewall; a weir supported on said upper housing; a launder supported on said upper housing, said weir disposed between said upper housing and said launder, said launder including an overflow outlet; a feed inlet disposed to receive aggregate material into said upper housing; a water injection system, the water injection system comprising:
a first conduit disposed outside said upper housing, said first conduit being in fluid communication with a water inlet;
a first plurality of teeter bars, each of said first plurality of teeter bars being fluidly coupled to one of a first plurality of pipes via one of a first plurality of selectively disengageable couplings, each of said first plurality of pipes extending through said first sidewall, each of said first plurality of pipes being fluidly coupled to said first conduit, each of said first plurality of teeter bars having a terminal end adjacent to said second sidewall;
a second conduit disposed outside said upper housing, said second conduit being in fluid communication with said water inlet;
a second plurality of teeter bars, each of said second plurality of teeter bars being fluidly coupled to one of a second plurality of pipes via one of a second plurality of selectively disengageable couplings, each of said second plurality of pipes extending through said second sidewall, each of said second plurality of pipes being fluidly coupled to said second conduit, each of said second plurality of teeter bars having a terminal end adjacent to said first sidewall; and
an underflow outlet in fluid communication with said lower housing.

15 . The hydraulic classifier of claim 14 , wherein each of said first and second pluralities of selectively disengageable couplings comprises a flanged connection, wherein each of said first and second pluralities of teeter bars is at least partially supported by said flanged connection.

16 . The hydraulic classifier of claim 15 , wherein said flanged connection is disposed inside said housing.

17 . The hydraulic classifier of claim 14 , wherein said upper housing has a rectangular cross-section, and wherein said lower housing has a circular cross-section.

18 . The hydraulic classifier of claim 14 , wherein each said teeter bar comprises a plurality of valves, wherein each said valve comprises a duckbill valve.

19 . The hydraulic classifier of claim 14 , wherein each said teeter bar comprises a horizontally-extending cylindrical portion comprising a polymer.

20 . The hydraulic classifier of claim 19 , wherein said polymer comprises high-density polyethylene.

Assignees

• Superior Industries

Inventors

• Grimm Lafe
• Hanson Shane
• Illot Paul

Classifications

• B03B5/623 Primary

  Upward current classifiers · CPC title