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US

20130193088A1

( 1 9 )

United

S t a t e s

( 1 2 )

Patent

Application

Publication

( 1 0 ) P u b .

N 0 . :

US 2 0 1 3 / 0 1 9 3 0 8 8 A 1

E c h e v e r r i

( 4 3 ) P u b .

D a t e :

Aug. , 2013

( 5 4 ) THICKENER/CLARIFIER

FEEDWELL

( 5 2 ) US. l .

HAVINGVOLUTE

PERIPHERIES CPC

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.

B01D 1/2411 (2013.01)

USPC

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. .

210/788;

210/512.1

( 7 5 ) I n v e n t o r :

L u i s

E c h e v er r i , T u c s o n ,

A Z

U

)

( 7 3 )

A s s i g n e e : FLSMIDTH / S , V a l b y ( D K )

( 5 7 ) ABSTRACT

(21) Appl. N0.: 13/878,699

A

e e d W e l l

f o r a

t h i c k e n e r / c l a r i ? e r

i n c l u d e s a

f e e d W e l l

body

( 2 2 )

PCT

i l e d ; Oct 1 4 , 2 0 1 1

( 4 0 ) , a f e e d W e l l i n l e t ( 4 1 ) , a s i d e w a l l ( 4 2 ) , and a d i s c h a r g e

o p e n i n g ( 4 8 ) . At

e a s t

o n e i n f e e d

c o n d u i t

( 2 1 ) i s

c o n n e c t e d

a t

( 8 6 ) PCT

o . 1

PCT/US11/56369 a n u p s t r e a m e n d o f t h e

f e e d W e l l

i n l e t

( 4 1 ) . The

s i d e Wa l l ( 4 2 )

h a s

a n o n - c y l i n d r i c a l

c u r v e d

p e r i p h e r al s u r f a c e d e ? n i n g a

3 7 1

( 0 ) 0 ) r a d i a l l y - o u t e r m o s t ? u i d

b o u n d a r y s u r f a c e

f o r a n i n ? u e n t

( 2 ) ( 4 )

D a t e :

A p r 1 0

2 0 1 3

s t r e a m ( 6 0 ) . T h e n o n - c y l i n d r i c a l

c u r v e d

p e r i p h e r a l s u r f a c e

R e l a t e d US, p p l i c a t i o n

Data

may n c l u d e p o r t i o n s o f a v o l u t e s u r f a c e , c o i l s u r f a ce , h e l i c a l

surface,

com ound

curve surface, s line curve surface, or

( 6 0 ) P r o v l s l o n a l a p p h c a n o n

N O 6 1 / 3 9 3 0 4 0

? l e d o n O c t

s p i r a l

s u r f a c e i j F e e d w e l l s a c c o r d i n g t o p t h e i n v e n t i o n p r o v i d e a

1 4 2 0 1 0 '

u n i f o r m

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? u x

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e x i t i n g p o r t i o n s

o f

P u b l i c a t i o n C l a s si ? c a ti o n

t h e f ee d W e l l , c o n t r o l v e l o c i t y g r a d i e n t s

a n d

s h e a r

r a t e s ,

p r o

t e c t ? o c c u l a t e d a g g r e g a t e s , n o r m a l i z e s e d i m en t a ti o n c o n d i

( 5 1 ) I n t . C l . t i o n s i n t h e s e t t l i n g t a n k ,

a n d

p r e v e n t l a r g e l o c a l a c c e l e r a t i o n s

B 0 1D 2 1 / 2 4

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