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Патент USA US2107544

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Feb. 8, 1938.
_
»
w_ B, MOORE
2,107,544
MIXER ‘AND CONDITIONER
Filed Jan. 2, 1934
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61mm; 4
2,107,544
Patented Feb. 8, 1938
UNITED STATES ‘PATENT OFFICE
2,107,544
MIXER AND CONDITIONER
Weldon B. Moore, Corpus Christi, Tex.
Application January . 2,
.
4 Claims.
This invention relates to a mixer and condi
tioner.
.
-
1934, Serial No. 704,879
(Cl. 210—69)
rounded by a stationary tubular housing 8 hav-‘
ing the feed hopper 9 mounted thereon. One
. An object of the invention is to provide an
end of the housing 8 is supported on the circular
apparatus of the character described specially
5 designed for mixing cement and for mixing and
?ange l0 carried by the bearing'Z and ?tted into
the adjacent end of the housing and the. other
conditioning mud to be used in drilling ?uid in
end of said housing is ?tted within and sup- -
the process of well drilling.
ported by the bearing ll whichin turn is sup
- '
In drilling wells, particularly deep oil wells,
ported on the transverse I-‘beam l2 of the frame.
a heavy drilling ?uid is employed consisting of _ This bearing II has an inside annular channel l3 .10 water mixed with mud.
It is necessary that this
mud-used in the drilling ?uid be maintained at
forming a collecting chamber in‘ which the end 10
of the housing 8 terminates and leading down
the proper consistency, and as the drilling ?uid _ wardly from this collecting chamber is a drain
is circulated in the drilling process, the return pipe l4.
'
'
'
Aligned with the housing 8 there is a drum-like
?uid is collected in a pit and the mud is reused
for mixing with drilling ?uid being circulated
down into. the well. During the circulating proc
ess the mud becomes contaminated, particularly
when shale formations are encountered and after
it is returned vit must be reconditioned so as to
20 remove the shale and other foreign matter.
It is the prime object of this invention to ‘mix
and recondition the drilling mud- and to remove
the objectionable foreign matter therefrom.
Another object of the invention is to provide
apparatus of this character that can also be used
as a cement mixer so that it may be utilized at
the site of the well ‘for mixing cement that is to
be used about the well thus dispensing with the
necessity of providing a separate mixer for that
30 purpose.
screen I5 one end of which is mounted on anti
friction rollers assembled with the bearing H
and the other end of which has a cage l6 se
cured thereto having the extended tubular shaft
I‘! which is mounted to rotate in the bearing 18,
and around the shaft 6 said last mentioned bear
ing being supported on the leg l9 of the frame
work.
The housing 8 and screen 9 are of approxi
mately the‘same diameter and are substantially I
concentric with the conveyor shaft 6. The ad 25
jacent ends of the housing 8 and screen l5 are in
substantially abutting relation and ?xed to the
end of the screen within the chamber l3 there is
an annular collar 20 whose free end is ?ared and
surrounds the adjacent end of the housing 8 so 30
With the above and other objects in view, the
invention has particular relation to certain novel
“features of construction, operation and arrange
‘that the leakage through the joint between the
- Figure 3 shows a cross sectional view taken on’
the line 3——3 of Figure 1, and
.
ceive the screen and to form a close ?t therewith
vso as to minimize leakage and‘the large end of
Figure 4 shows a cross sectional view taken
on the line 4-4 of Figure 1.
Referring now more particularly to the draw
ing wherein like numerals of reference designate
the collector has the drain pipe 25 leading there
from. The collector is supported on the cross
housing and screen will be prevented from reach
ing the screen bearings and will be directed into
ment of parts, an example of which is given in » the chamber I3 and through the drain pipe l4.
Fixed on the shaft l'l beyond the bearing l8 35
this speci?cation and illustrated in the accom
there is a driving pulley 2| through which the
panying drawing wherein: '
'
Figure 1 shows a longitudinal sectional view of screen may be rotated at the required speed. '
the complete machine.
Around the screen there is a collector 22, which
Figure 2 shows a partial plan view with the is ?ared towards its discharge end. The ends
23, 24 of the collector have central hearings to re
40 collector removed.
"
45
similar, parts in each of the ?gures, the numeral
I designates a frame having the end bearing 2
mounted on the transverse I-beam 3 at one end
50 of the frame and having a bearing 4 mounted on
beams 26, 21 forming a part of the frame.
.
45
Adjacent the large end of the collector 22 and
surrounding and enclosing the cage Hi there is a
drum like guard 28 one end of which has a hear
ing to snugly receive the adjacent end of the
screen l5 and the other end ‘of which has a bear
the upstanding leg 5 at the other end of ,the ing to snugly receive the shaft [1. This guard
frame. Rotatably mounted in these end bear ‘ is provided with an outlet chute 30.
On the shaft 6 underneath the hopper 9 there
ings there is the conveyor shaft 6 having drive
pulley 1 ?xed on one end thereof.
55
The other end of vthe conveyor shaft is su_1;-.
, is a short conveyor. screw 3| and ?xed on said
shaft with the screen is a conveyor screw 3|’ 55
2
2,107,544
which continues approximately from the joint
between the housing 8 and the screen l5 to the
cage I6. Fixed on the shaft 6 between said con
veyors are the mixing paddles 32.
The screen I5 may be of any desired formation,
as shown it consists of tubular foraminated ma
terial.
The bottom of the housing 8 adjacent the bear
ing II is provided with an opening 33 normally
10 closed by the removable cover 34.
When used as a cement mixer, the shaft 6 only
is rotated and the material placed in the hopper
9 will be driven along toward the paddles 32 by
the conveyor 3| and as it passes along will be
15 mixed by said paddles and with the cover 34 re
moved will pass out through the opening 33.
When the apparatus is to be used for mixing
and reconditioning mud the opening 33 will be
closed by the cover 34 and shaft 6 and screen l5
20 will both be rotated, said screen being rotated
more rapidly than the shaft and conveyor.
The drilling ?uid when returned from tne well‘
will be conducted back into the hopper 9 and the
necessary water and other materials as needed are
25 also placed in said hopper.
They will be mixed
by the paddles 32 and will pass on along the hous
ing into the screen, the centrifugal force caused
by the high revolution of the screen forcing the
?ner particles of mud through the screen into
30 the collector 22 and the mud will then be 'con
ducted back into the mud pit through the drain
25. Particles of shale and ‘other undesirable
particles and objects to be excluded from the
drilling mud will be conveyed on by conveyor 3|’
35 into and through cage l6, and out through the
chute 30.
The drawing and description disclose what is
now considered to be a preferred form of the in
vention by way of illustration only while the
broad principle of the invention will be de?ned
by the appended claims.
What I claim is:
,
1. Apparatus for reconditioning a fluid drilling
mud containing foreign bodies comprising spaced
bearings, a conveyor shaft mounted in said bear
ings, means for rotating the shaft, a tubular
stationary housing surrounding one end of the
shaft and having a feed hopper, an intermediate
bearing supporting one end of the housing, said
50 intermediate bearing having an inside annular
channel forming a collecting chamber, a drain
leading from said chamber, a drum-dike screen
aligned with the housing, one end of which is
supported in said intermediate bearing, and the
55 other end of which is provided with a cage hav
ing an extended tubular shaft which surrounds
the conveyor shaft, means for rotating said tubu
lar shaft and screen, the adjacent ends of the
screen and housing being provided, one with an
annular collar whose free end is ?ared and sur
rounds the other whereby the leakage through
the joint between the housing and screen will
be_ directed into said chamber, a collector sur
rounding the screen and ?ared toward its dis
65
charge end, said collector having end bearings to
receive and form a close ?t with the screen, a
drum-like guard adjacent the discharge end of
the collector and surrounding and enclosing said
cage, said collector and guard being provided
70 with outlets, a conveyor on the conveyor- shaft
underneath said hopper, a conveyor on said shaft
within the screen, mixing paddles on the con
veyor shaft between said conveyors.
2. Apparatus for reconditioning a ?uid drill
75 ing mud containing foreign bodies comprising
spaced bearings, a conveyor shaft mounted in said
bearings, fneans for rotating the shaft, a tubular
stationary housing surrounding one end of the
shaft and having a feed hopper, an intermediate
bearing supporting one end of the housing, said to.
intermediate bearing having an inside annular
channel forming a collecting chamber, a drain
leading from said chamber, a drum-like screen
aligned with the housing, one end of which is
supported in said intermediate bearing, and the 10
other end of which is provided with a cage having
an extended tubular shaft which surrounds the
conveyor shaft, means for rotating said tubular
shaft and screen, the adjacent ends of the screen
and housing being provided, one with an annular
collar whose free end is ?ared and surrounds the
other whereby the leakage through the joint be
tween housing and screen will be directed into
said chamber, a collector surrounding the screen
and ?ared toward its discharge end, said collector 20
having end bearings to receive and form a close
?t with the screen, a drum-like guard adjacent
the discharge end of the collector and surround
ing and enclosing said cage, said collectorand
guard being provided with outlets, a conveyor on
the conveyor shaft underneath said hopper, a
conveyor on said shaft within the screen, mixing
paddles on the conveyor shaft between said con
veyors, said housing having an opening at its
under side and a removable cover arranged to 30
close said opening.
3. Apparatus for reconditioning a ?uid drill
ing mud containing foreign bodies comprising
spaced bearings-a conveyor shaft mounted in said
bearings, means for rotating the shaft, a tubu 35
lar stationary housing surrounding one end of
the shaft and having a feed hopper, an inter
mediate bearing supporting one end of the hous
ing, said intermediate bearing having an inside
annular channel forming a collecting chamber, a
drain leading from said chamber, a drum-like
screen aligned with the housing, one end of which
is supported in said intermediate bearing, and
the other end of which is provided with a cage
having an extended tubular shaft which sur 45
rounds the conveyor shaft, means for rotating
said tubular shaft and screen, the adjacent ends
of the screen and housing being provided, one
with an annular collar whose free end is ?ared
and surrounds the other whereby the leakage 50
through the joint between the housing and screen
will be directed into said chamber, a collector
surrounding the screen and'?ared toward its dis
charge end, said collector having end hearings to
receive and form a close ?t with the screen, a
drum-like guard adjacent the discharge end of
the collector and surrounding and enclosing said
cage, said collector and guard being provided with
outlets, a conveyor on said shaft within the
screen, and mixing paddles on the conveyor shaft 60
in advance of said conveyor.
4. Apparatus for reconditioning a ?uid drill
ing mud containing foreign bodies comprising
spaced bearings, a conveyor shaft mounted in
said bearings, means for rotating the shaft, a 65
tubular stationary housing surrounding one end
of the shaft and having a feed hopper, an in
termediate bearing supporting one end of the
housing, a drum-like screen aligned with the
housing, one end of which is supported in said
intermediate bearing, and the other end of which
is provided with a cage having an extended tubu
lar shaft which surrounds, the conveyor shaft,
means for rotating said tubular shaft and screen,
the adjacent ends of the screen and housing be
2,107,544
ing provided, one with an annular collar whose
free end is ?ared and surrounds the other, a col
lector surrounding the screen and ?ared toward
its discharge end, said collector having end bear~
lngs to receive and form a close ?t with the
screen, a drum-like guard adjacent the discharge
end of the collector and surrounding and enclos
-
a
3
mg said cage, said collector and guard being pro
vided with outlets, a conveyor on the conveyor
shaft within the screen, mixing paddles on the
conveyor shaft arranged in advance of said
conveyor.
WELDON B. MOORE.
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