US3782696A - Mixing devices - Google Patents
Mixing devices Download PDFInfo
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- US3782696A US3782696A US00213147A US3782696DA US3782696A US 3782696 A US3782696 A US 3782696A US 00213147 A US00213147 A US 00213147A US 3782696D A US3782696D A US 3782696DA US 3782696 A US3782696 A US 3782696A
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- stator
- rotor
- shaft
- stator element
- inlet
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/81—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis the stirrers having central axial inflow and substantially radial outflow
Definitions
- ABSTRACT U.S. Cl. 259/6, 259/96 A mi ing device comprising rotor and stator elements [51] Int. Cl. B0lf 3/12, BOlf 5/16 wherein a screw conveyor is mounted n the t r [58] Field of Search 259/8, 23, 24, 43, shaft n p rotation of the shaft, conveys material 259/44, 66, 67, 96 towards the inlet to the stator element. Associated with the conveyor are stationary guide plates which [56] References Cited assist in providing an increased flow of material to the UNITED STATES PATENTS 4/1959 Willems 259/96 X stator element.
- the present invention includes a mixing device comprising co-operating rotor and stator elements of which the stator element has an inlet at one end thereof and outlet aperture means in a side wall thereof and the rotor element comprises a bladed impeller mounted on an elongated shaft and adapted, upon rotation, to expel material within the stator element outwardly via the outlet aperture means, wherein conveyor means are mounted on the rotor shaft outside the stator element and are adapted, upon rotation of the shaft, to convey material in directions generally parallel with the shaft towards the inlet to the stator element.
- the conveyor means comprise a helical screw conveyor.
- guide means secured relative to the stator element, are arranged adjacent to the conveyor means, the guide means serving to prevent or substantially prevent rotation of material adjacent to the conveyor means, thereby to provide an increased flow of material in the said directionsgenerally parallel with the shaft.
- the guide means may comprise a plurality of guide elements respectively disposed at locationo'ns angularly spaced about the axis of the rotor shaft, each guide element extending generally parallel with the rotor shaft and extending outwardly from a location adjacent to the conveyor means at an angle which is inclined to the radial direction at that location.
- the device comprises a further mixing head co-operating rotor and stator elements, the rotor element of the further mixing head being mounted on the said rotor shaft and each stator element in the device being arranged with the inlet thereto facing in a direction away from the other stator element.
- FIG. 1 is a side elevation, partly in section, of a mixing device according to the invention.
- FIG. 2 is a plan view from below of the device of FIG. 1.
- the mixing device of FIGS. 1 and 2 is suitable for mixing together two viscous liquids or for mixing a liquid and particles of a solid which are not readily wetted and tend to float on the surface of the liquid.
- an upper mixing or disintegrating head 1 having a rotor element 3 and cooperating stator element 5 and a lower mixing head 7 having co-operating rotor and stator elements 9 and l 1, respectively.
- the rotor elements 3 and 9 are mounted on a common rotor shaft 13 and the stator elements 5 and 11 are mounted on a common supporting plate 15.
- the device is immersed in material within a mixing vessel (not shown), the supporting plate being pendantly supported from the casing of a motor (not shown) above the vessel and the common shaft 13 being coupled to an output shaft of the motor.
- the motor When the motor is energised the upper rotor element 3 serves to-drive material radially outwardly through the associated stator element 5 and to cause a downwards flow of material into the element 5 to replace that expelled.
- the lower rotor element likewise expels material radially outwardly from the associated stator element 11. This material is replaced by an upwards flow from conveyor means, generally designated 17, which are provided on a lower end of the rotor shaft 13, and associated guide means, generally designated 19, which depend from the supporting plate 15.
- the supporting plate 15 is pendantly supported from the motor casing by four pillars 21 and is formed with a central, apertured boss 23 through which the rotor shaft 13 extends.
- the stator element 11 of the lower head 7 has an apertured, cylindrical side wall 25 formed with an outer flange 27 at its upper end.
- the flange 27 is bolted to the under-surface of the supporting plate 15, coaxially of the apertured boss 23; and the lower end of the wall 25 is open and provides an inlet 28 to the stator element 11.
- the rotor element 9 of the lower head 7 consists of a rotor plate 29 and four rotor blades 31 which depend from an under surface of the plate 29.
- the rotor element 9 is secured to a section of the rotor shaft 13 which is disposed within the lower stator element 11.
- Each rotor blade 31 extends outwardly from the rotor shaft 13 to a radial location adjacent to an inner surface of the cylindrical sidewall 25 of the stator element 11.
- the conveyor means 17 of the present device is formed of a helical screw conveyor 33 mounted on a sleeve 35.
- the sleeve 35 is secured to a lower end of the rotor shaft 13 below the stator element 11 of the lower mixing head 7.
- each guide plate 37 Associated with the conveyor means 17 are four upstanding guide plates 37 which form the abovementioned guide means 19.
- the plates 37 are disposed at equi-angularly spaced locations about the axis of the rotor shaft 13, with each plate 37 secured at its upper end to a bracket 39 which is bolted to the supporting plate 15.
- each guide plate 37 extends from a location adjacent to the screw conveyor 33 outwardly in a direction which is inclined to the radial direction at that location.
- the stator element 5 of the upper mixing head 1 is mounted on pillars 41 upstanding from the common supporting plate 15. As in the case of the lower head 7, the stator element 5 is formed of an apertured, cylindrical side wall 43 having a flange 45 at one end thereof. The stator element 5 is arranged with the flange 45 lowermost and secured to the upper, ends of the supporting pillars 41. The upper end of the side wall 43 is open and provides an inlet 44 to the stator element 5.
- the rotor element 3 of the upper head 1 likewise corresponds to the rotor element 9 of the lower head 7, being formed of a rotor plate 47 and four rotor blades 49.
- the rotor element 3 is secured to a section of the rotor shaft 13 within the upper stator element 5 with the blades 49 upstanding from the rotor plate 47.
- the present device is supported by a driving motor in the manner set out above and the upper and lower mixing heads 1 and 7, respectively, the screw conveyor 33 and the guide plates 37 are immersed in material within the mixing vessel.
- the rotating blades 49 and 31 of rotor elements 1 and 7, respectively serve to force material radially outwardly through the apertures in the side wall 43 or 25 of the associated stator element 5 or 11.
- the material passes between the blades 49 or 31 and the side wall 43 or 25 and through the apertures in the side wall it is subjected to thorough mixing. Any solid particles present are also subjected to disintegration.
- Material expelled from the upper stator element 5 is replaced by a downwards flow of material from the top of the mixing vessel into the inlet 44 at the upper end of the stator element 5.
- This downwards flow arises from the vortex effect of the upper rotor element 3 and is particularly important in mixing a solid which is not readily wetted with a liquid.
- the screw conveyor 33 serves to provide an upwards replacement flow of material towards the inlet 28 to the lower stator element 11 which is equal, or substantially equal, to the rate at which material is expelled. This is true even for viscous liquids.
- the helical screw conveyor 33 could be replaced by other forms of conveyor.
- the helical screw could be broken at equiaxially spaced locations or it could be replaced by a series of propellers arranged to provide a flow of material generally parallel with the shaft 13.
- a mixing device comprising: a first mixing head having co-operating rotor and stator elements of which the stator element has an inlet at one end thereof and outlet aperture means in a side wall thereof and the rotor element comprises a bladed impeller mounted on an elongated shaft and adapted, upon rotation, to expel material within the stator element outwardly via the outlet aperture means, and conveyor means mounted on the rotor shaft outside the stator element and adapted, upon rotation of the shaft, to convey material in directions generally parallel with the shaft towards the inlet to the stator element, said conveyor means comprising a helical screw conveyor.
- a mixing device comprising: a first mixing head having co-operating rotor and stator elements of which the stator element has an inlet at one end thereof and outlet aperture means in a side wall thereof and the rotor element comprises a bladed impeller mounted on an elongated shaft and adapted, upon rotation, to expel material within the stator element outwardly via the outlet aperture means, conveyor means mounted on the rotor shaft outside the stator element and adapted, upon rotation of the shaft, to convey material in directions generally parallel with the shaft towards the inlet to the stator element, and a second mixing head having co-operating rotor and stator elements, the rotor element of the second mixing head being mounted on the said rotor shaft and each stator element in the device being arranged with the inlet thereto facing in a direction away from the other stator element.
- a mixing device as claimed in claim 4 further including guide means secured relative to the stator element of said first mixing head and arranged adjacent to the conveyor means, the guide means being adapted to prevent or substantially prevent rotation of material adjacent to the conveyor means, thereby to provide an increased flow of material in the said directions generally parallel with the shaft.
- the guide means comprise a plurality of guide elements respectively disposed at locations angularly spaced about the axis of the rotor shaft, each guide element extending generally parallel with the rotor shaft and extending outwardly from a location adjacent to the conveyor means at an angle which is inclined to the radial direction at that location.
- a mixing device comprising: a pair of mixing heads each having a rotor and a stator, said stator having an inlet at one end and outlet aperture means at the side thereof, wherein the rotors are mounted at axially spaced locations on a common shaft and each stator is arranged with the inlet thereof facing in an axial direction away from the other stator.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
A mixing device comprising rotor and stator elements wherein a screw conveyor is mounted on the rotor shaft and, upon rotation of the shaft, conveys material towards the inlet to the stator element. Associated with the conveyor are stationary guide plates which assist in providing an increased flow of material to the stator element.
Description
United States Patent Love Jan. 1, 1974 MIXING DEVICES 2,875,897 3/1959 Booth 259 96 x [75] Inventor: Gordon David Love, Waterside, England 3,669,414 6/1972 Love [73] Assignee: Silverson Machines Limited,
Water ide, E l d Primary Examiner-Billy J. Wilhite Assistant ExaminerAlan I. Cantor [22] Filed: 1971 Att0rneyDelio & Montgomery [2!] Appl. No.: 213,147
[57] ABSTRACT [52] U.S. Cl. 259/6, 259/96 A mi ing device comprising rotor and stator elements [51] Int. Cl. B0lf 3/12, BOlf 5/16 wherein a screw conveyor is mounted n the t r [58] Field of Search 259/8, 23, 24, 43, shaft n p rotation of the shaft, conveys material 259/44, 66, 67, 96 towards the inlet to the stator element. Associated with the conveyor are stationary guide plates which [56] References Cited assist in providing an increased flow of material to the UNITED STATES PATENTS 4/1959 Willems 259/96 X stator element.
8 Claims, 2 Drawing Figures MIXING DEVICES This invention relates to mixing devices.
The present invention includes a mixing device comprising co-operating rotor and stator elements of which the stator element has an inlet at one end thereof and outlet aperture means in a side wall thereof and the rotor element comprises a bladed impeller mounted on an elongated shaft and adapted, upon rotation, to expel material within the stator element outwardly via the outlet aperture means, wherein conveyor means are mounted on the rotor shaft outside the stator element and are adapted, upon rotation of the shaft, to convey material in directions generally parallel with the shaft towards the inlet to the stator element.
Preferably, the conveyor means comprise a helical screw conveyor.
Preferably, guide means, secured relative to the stator element, are arranged adjacent to the conveyor means, the guide means serving to prevent or substantially prevent rotation of material adjacent to the conveyor means, thereby to provide an increased flow of material in the said directionsgenerally parallel with the shaft. V
The guide means may comprise a plurality of guide elements respectively disposed at locatio'ns angularly spaced about the axis of the rotor shaft, each guide element extending generally parallel with the rotor shaft and extending outwardly from a location adjacent to the conveyor means at an angle which is inclined to the radial direction at that location.
Suitably the device comprises a further mixing head co-operating rotor and stator elements, the rotor element of the further mixing head being mounted on the said rotor shaft and each stator element in the device being arranged with the inlet thereto facing in a direction away from the other stator element.
The invention will now be described,'by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a side elevation, partly in section, of a mixing device according to the invention; and
FIG. 2 is a plan view from below of the device of FIG. 1.
The mixing device of FIGS. 1 and 2 is suitable for mixing together two viscous liquids or for mixing a liquid and particles of a solid which are not readily wetted and tend to float on the surface of the liquid.
Included in the device is an upper mixing or disintegrating head 1 having a rotor element 3 and cooperating stator element 5 and a lower mixing head 7 having co-operating rotor and stator elements 9 and l 1, respectively. The rotor elements 3 and 9 are mounted on a common rotor shaft 13 and the stator elements 5 and 11 are mounted on a common supporting plate 15.
In use, the device is immersed in material within a mixing vessel (not shown), the supporting plate being pendantly supported from the casing of a motor (not shown) above the vessel and the common shaft 13 being coupled to an output shaft of the motor. When the motor is energised the upper rotor element 3 serves to-drive material radially outwardly through the associated stator element 5 and to cause a downwards flow of material into the element 5 to replace that expelled. The lower rotor element likewise expels material radially outwardly from the associated stator element 11. This material is replaced by an upwards flow from conveyor means, generally designated 17, which are provided on a lower end of the rotor shaft 13, and associated guide means, generally designated 19, which depend from the supporting plate 15.
In the present device the supporting plate 15 is pendantly supported from the motor casing by four pillars 21 and is formed with a central, apertured boss 23 through which the rotor shaft 13 extends.
The stator element 11 of the lower head 7 has an apertured, cylindrical side wall 25 formed with an outer flange 27 at its upper end. The flange 27 is bolted to the under-surface of the supporting plate 15, coaxially of the apertured boss 23; and the lower end of the wall 25 is open and provides an inlet 28 to the stator element 11.
The rotor element 9 of the lower head 7 consists of a rotor plate 29 and four rotor blades 31 which depend from an under surface of the plate 29. The rotor element 9 is secured to a section of the rotor shaft 13 which is disposed within the lower stator element 11. Each rotor blade 31 extends outwardly from the rotor shaft 13 to a radial location adjacent to an inner surface of the cylindrical sidewall 25 of the stator element 11.
The conveyor means 17 of the present device is formed of a helical screw conveyor 33 mounted on a sleeve 35. The sleeve 35 is secured to a lower end of the rotor shaft 13 below the stator element 11 of the lower mixing head 7.
Associated with the conveyor means 17 are four upstanding guide plates 37 which form the abovementioned guide means 19. The plates 37 are disposed at equi-angularly spaced locations about the axis of the rotor shaft 13, with each plate 37 secured at its upper end to a bracket 39 which is bolted to the supporting plate 15. As viewed in plan, each guide plate 37 extends from a location adjacent to the screw conveyor 33 outwardly in a direction which is inclined to the radial direction at that location.
The stator element 5 of the upper mixing head 1 is mounted on pillars 41 upstanding from the common supporting plate 15. As in the case of the lower head 7, the stator element 5 is formed of an apertured, cylindrical side wall 43 having a flange 45 at one end thereof. The stator element 5 is arranged with the flange 45 lowermost and secured to the upper, ends of the supporting pillars 41. The upper end of the side wall 43 is open and provides an inlet 44 to the stator element 5.
The rotor element 3 of the upper head 1 likewise corresponds to the rotor element 9 of the lower head 7, being formed of a rotor plate 47 and four rotor blades 49. The rotor element 3 is secured to a section of the rotor shaft 13 within the upper stator element 5 with the blades 49 upstanding from the rotor plate 47.
In use, the present device is supported by a driving motor in the manner set out above and the upper and lower mixing heads 1 and 7, respectively, the screw conveyor 33 and the guide plates 37 are immersed in material within the mixing vessel.
When the motor is energised the rotating blades 49 and 31 of rotor elements 1 and 7, respectively, serve to force material radially outwardly through the apertures in the side wall 43 or 25 of the associated stator element 5 or 11. As the material passes between the blades 49 or 31 and the side wall 43 or 25 and through the apertures in the side wall it is subjected to thorough mixing. Any solid particles present are also subjected to disintegration.
Material expelled from the upper stator element 5 is replaced by a downwards flow of material from the top of the mixing vessel into the inlet 44 at the upper end of the stator element 5. This downwards flow arises from the vortex effect of the upper rotor element 3 and is particularly important in mixing a solid which is not readily wetted with a liquid.
In the absence of the screw conveyor 33 and guide 37 material expelled from the lower stator element 11 could only be replaced by a similar, upwards flow from the bottom of the mixing vessel. ln mixing viscous liquids, however, it is found that the upwards, replacement flow cannot keep pace with the rate at which material is expelled from the lower stator element 11. As a result, a region of reduced pressure is formed within the stator element 11 and the effective rate of mixing and disintegration is greatly reduced.
The screw conveyor 33 serves to provide an upwards replacement flow of material towards the inlet 28 to the lower stator element 11 which is equal, or substantially equal, to the rate at which material is expelled. This is true even for viscous liquids.
In the absence of the guide plates 37 rotation of the screw conveyor 33 would tend to cause rotation of material adjacent to the material which is actually engaged by the conveyor. The guide plates 37 prevent, or substantially prevent, rotation of this adjacent material. This reduces slippage of material on the conveyor 33, thereby producing an increased rate of supply of material upwardly towards the inlet 28.
lt will be appreciated that the helical screw conveyor 33 could be replaced by other forms of conveyor. For example, the helical screw could be broken at equiaxially spaced locations or it could be replaced by a series of propellers arranged to provide a flow of material generally parallel with the shaft 13.
I claim:
1. A mixing device comprising: a first mixing head having co-operating rotor and stator elements of which the stator element has an inlet at one end thereof and outlet aperture means in a side wall thereof and the rotor element comprises a bladed impeller mounted on an elongated shaft and adapted, upon rotation, to expel material within the stator element outwardly via the outlet aperture means, and conveyor means mounted on the rotor shaft outside the stator element and adapted, upon rotation of the shaft, to convey material in directions generally parallel with the shaft towards the inlet to the stator element, said conveyor means comprising a helical screw conveyor.
2. A mixing device as claimed in claim 1, further including guide means secured relative to the stator element and arranged adjacent to the conveyor means, the guide means being adapted to prevent or substantially prevent rotation of material adjacent to the conveyor means, thereby to provide an increased flow of material in the said directions generally parallel with the shaft.
3. A mixing device as claimed in claim 2, wherein the guide means comprise a plurality of guide elements respectively disposed at locations angularly spaced about the axis of the rotor shaft, each guide element extending generally parallel with the rotor shaft and extending outwardly from a location adjacent to the conveyor means at an angle which is inclined to the radial direction at that location.
4. A mixing device comprising: a first mixing head having co-operating rotor and stator elements of which the stator element has an inlet at one end thereof and outlet aperture means in a side wall thereof and the rotor element comprises a bladed impeller mounted on an elongated shaft and adapted, upon rotation, to expel material within the stator element outwardly via the outlet aperture means, conveyor means mounted on the rotor shaft outside the stator element and adapted, upon rotation of the shaft, to convey material in directions generally parallel with the shaft towards the inlet to the stator element, and a second mixing head having co-operating rotor and stator elements, the rotor element of the second mixing head being mounted on the said rotor shaft and each stator element in the device being arranged with the inlet thereto facing in a direction away from the other stator element.
5. A mixing device as claimed in claim 4, wherein said conveyor means comprises a helical screw conveyor.
6. A mixing device as claimed in claim 4, further including guide means secured relative to the stator element of said first mixing head and arranged adjacent to the conveyor means, the guide means being adapted to prevent or substantially prevent rotation of material adjacent to the conveyor means, thereby to provide an increased flow of material in the said directions generally parallel with the shaft.
7. A mixing device as claimed in claim 6, wherein the guide means comprise a plurality of guide elements respectively disposed at locations angularly spaced about the axis of the rotor shaft, each guide element extending generally parallel with the rotor shaft and extending outwardly from a location adjacent to the conveyor means at an angle which is inclined to the radial direction at that location.
8. A mixing device comprising: a pair of mixing heads each having a rotor and a stator, said stator having an inlet at one end and outlet aperture means at the side thereof, wherein the rotors are mounted at axially spaced locations on a common shaft and each stator is arranged with the inlet thereof facing in an axial direction away from the other stator.
Claims (8)
1. A mixing device comprising: a first mixing head having cooperating rotor and stator elements of which the stator element has an inlet at one end thereof and outlet aperture means in a side wall thereof and the rotor element comprises a bladed impeller mounted on an elongated shaft and adapted, upon rotation, to expel material within the stator element outwardly via the outlet aperture means, and conveyor means mounted on the rotor shaft outside the stator element and adapted, upon rotation of the shaft, to convey material in directions generally parallel with the shaft towards the inlet to the stator element, said conveyor means comprising a helical screw conveyor.
2. A mixing device as claimed in claim 1, further including guide means secured relative to the stator element and arranged adjacent to the conveyor means, the guide means being adapted to prevent or substantially prevent rotation of material adjacent to the conveyor means, thereby to provide an increased flow of material in the said directions generally parallel with the shaft.
3. A mixing device as claimed in claim 2, wherein the guide means comprise a plurality of guide elements respectively disposed at locations angularly spaced about the axis of the rotor shaft, each guide element extending generally parallel with the rotor shaft and extending outwardly from a location adjacent to the conveyor means at an angle which is inclined to the radial direction at that location.
4. A mixing device comprising: a first mixing head having co-operating rotor and stator elements of which the stator element has an inlet at one end thereof and outlet aperture means in a side wall thereof and the rotor element comprises a bladed impeller mounted on an elongated shaft and adapted, upon rotation, to expel material within the stator element outwardly via the outlet aperture means, conveyor means mounted on the rotor shaft outside the stator element and adapted, upon rotation of the shaft, to convey material in directions generally parallel with the shaft towards the inlet to the stator element, and a second mixing head having co-operating rotor and stator elements, the rotor element of the second mixing head being mounted on the said rotor shaft and each stator element in the device being arranged with the inlet thereto facing in a direction away from the other stator element.
5. A mixing device as claimed in claim 4, wherein said conveyor means comprises a helical screw conveyor.
6. A mixing device as claimed in claim 4, further including guide meaNs secured relative to the stator element of said first mixing head and arranged adjacent to the conveyor means, the guide means being adapted to prevent or substantially prevent rotation of material adjacent to the conveyor means, thereby to provide an increased flow of material in the said directions generally parallel with the shaft.
7. A mixing device as claimed in claim 6, wherein the guide means comprise a plurality of guide elements respectively disposed at locations angularly spaced about the axis of the rotor shaft, each guide element extending generally parallel with the rotor shaft and extending outwardly from a location adjacent to the conveyor means at an angle which is inclined to the radial direction at that location.
8. A mixing device comprising: a pair of mixing heads each having a rotor and a stator, said stator having an inlet at one end and outlet aperture means at the side thereof, wherein the rotors are mounted at axially spaced locations on a common shaft and each stator is arranged with the inlet thereof facing in an axial direction away from the other stator.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US21314771A | 1971-12-28 | 1971-12-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3782696A true US3782696A (en) | 1974-01-01 |
Family
ID=22793920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US00213147A Expired - Lifetime US3782696A (en) | 1971-12-28 | 1971-12-28 | Mixing devices |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US3782696A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5118199A (en) * | 1991-04-03 | 1992-06-02 | General Signal Corporation | Side entry mixer apparatus |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2875897A (en) * | 1953-06-22 | 1959-03-03 | Booth Lionel Earl | Flotation machine |
| US2882149A (en) * | 1955-04-14 | 1959-04-14 | Willems Peter | Flow apparatus for the continuous physical and/or chemical treatment of substances |
| US2928665A (en) * | 1950-09-27 | 1960-03-15 | American Instr Co Inc | Gas-liquid mixing apparatus |
| US3339897A (en) * | 1965-05-28 | 1967-09-05 | Jr Philip E Davis | Continuous mixing device for drilling fluids |
| US3669414A (en) * | 1968-03-25 | 1972-06-13 | Gordon D Love | Mixing apparatus |
-
1971
- 1971-12-28 US US00213147A patent/US3782696A/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2928665A (en) * | 1950-09-27 | 1960-03-15 | American Instr Co Inc | Gas-liquid mixing apparatus |
| US2875897A (en) * | 1953-06-22 | 1959-03-03 | Booth Lionel Earl | Flotation machine |
| US2882149A (en) * | 1955-04-14 | 1959-04-14 | Willems Peter | Flow apparatus for the continuous physical and/or chemical treatment of substances |
| US3339897A (en) * | 1965-05-28 | 1967-09-05 | Jr Philip E Davis | Continuous mixing device for drilling fluids |
| US3669414A (en) * | 1968-03-25 | 1972-06-13 | Gordon D Love | Mixing apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5118199A (en) * | 1991-04-03 | 1992-06-02 | General Signal Corporation | Side entry mixer apparatus |
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