Solid bowl centrifugal separator
阅读：861发布：2021-12-14
专利汇可以提供Solid bowl centrifugal separator专利检索，专利查询，专利分析的服务。并且A centrifugal separator for the removal of solids from slurry. A high-speed bowl which rotates about a vertical axis is centrally fed with slurry in its upper region. A circular ceiling plate above the level of slurry feed establishes with the cylindrical upper rim section of the bowl a narrow annulus which becomes sealed with sludge as the solid constituents build up in the vicinity thereof and a series of plows advance slowly around the annulus and through the sludge seal and serve to elevate the sludge above the ceiling plate and into the path of a series of rotatable buckets. The latter orbit at a slightly increased speed around the bowl interior and in connection with rotation thereof assume outside ecliptic positions where they scoop wads of sludge from the sludge seal. Such buckets also in connection with rotation thereof assume inside ecliptic positions where their directional relationship is reversed so that centrifugal force dislodges the wads and causes them to be flung radially outwards over the rim of the bowl. The liquid constituent of the slurry is forced outwardly through an outlet in the bowl bottom wall.，下面是Solid bowl centrifugal separator专利的具体信息内容。
1. A Centrifugal separator comprising a bowl having a dished bottom wall which slopes upwardly and terminates in an upper open circular rim, a horizontal deck plate disposed within said bowl and presenting a circular edge spaced inwardly of the bowl wall so as to define a first annulus which communicates with the bottom region of the bowl, a horizontal ceiling plate spaced upwardly from the deck plate and presenting a circular edge spaced inwardly of the bowl wall a slight distance so as to define a second and narrow annulus which inhibits the flow of solids upwardly therethrough, means for effecting rotation of said bowl and plates in unison and at a relatively high speed about the vertical axis of the bowl whereby the solid constituents of slurry placed on a deck plate will be flung radially outwardly of the bowl between the deck and ceiling plates and establish an annular sludge seal between the ceiling plate and bowl wall while the liquid constituent of the slurry will be forced downwardly through the first annulus, a series of plows disposed within said bowl and mounted for rotation about said central axis in the vicinity of the sludge seal and effective upon rotation thereof to move circumferentially around the bowl wall and loosen the sludge for upward movement through said second annulus, means disposed immediately above said ceiling plate for withdrawing wads of the thus loosened sludge from the vicinity of said second annulus, conducting them inwardly of the bowl, raising them above the level of the bowl rim, and releasing them for outward radial flinging movement under the influence of centrifugal force over the upper rim of the bowl, there being a liquid outlet in the bottom region of said bowl wall in order to effect discharge of the liquid constituent.
2. A centrifugal separator as set forth in claim 1 and including, additionally, a sludge-collector wall encompassing the rim of said bowl and upon which the sludge which is flung radially over the rim of the bowl collects due to impact thereagainst, a scraper blade adapted to traverse said collector wall for sludge removal purposes, and means establishing relative circumferential movement between the scraper blade and collector wall.
3. A centrifugal separator as set forth in claim 2 and wherein the collector wall is generally cylindrical and concentric with the axis of the bowl, the scraper blade is fixed, and the means for establishing relative circumferential movement between the scraper blade and collector wall comprises power means for rotating the collector wall at a relatively low speed.
4. A centrifugal separator as set forth in claim 3 and wherein said power means is independent of the means for effecting rotation of the bowl.
5. A centrifugal separator as set forth in claim 1 and wherein the means for effecting rotation of the bowl and plates comprises a central shaft which passes vertically upwardly through the central portions of the bowl wall and plates in sealing relationship and to which said bowl and plates are fixedly secured.
6. A centrifugal separator as set forth in claim 5 and wherein said central shaft is provided with an axial bore having at least one radial passage extending therefrom and establishing communication between the bore and the space between said deck and ceiling plates, and means are provided for supplying slurry to the bore for deposition on said deck plate in the central region of the bowl via the radial passage.
7. A centrifugal separator as set forth in claim 1 and wherein the means for withdrawing wads of sludge from the vicinity of said second annulus comprises a circular series of circumferentially spaced open-sided buckets disposed within the bowl for orbital movement about the axis of the bowl at a rate of speed slightly different from the speed of rotation of the bowl and for rotation about its own axis of orbital movement, whereby the buckets thereof assume outside and inside ecliptic positions with respect to the axis of the bowl and orbital axis of the serieS, means for effecting rotation of said series of buckets at a relatively slow rate of speed, said buckets during passage through their outside ecliptic positions moving in tangential fashion into close proximity to said bowl wall and presenting their open sides in a leading direction so as to gather wads of sludge from the vicinity of said second annulus, and during passage through their inside ecliptic positions becoming directionally reversed and elevated above the level of the bowl rim whereby the gathered wads of sludge will be flung radially outwardly over said rim to a region of discharge.
8. A centrifugal separator adapted to remove solids from slurry and comprising a rotatable bowl having a dished wall which slopes progressively upwardly and outwardly and terminates in an open circular rim, means for rotating said bowl about a vertical axis at relatively high speed to the end that slurry deposited within the bowl will be flung radially outwardly by centrifugal force and the solids therein cause to settle on said wall in the vicinity of said circular rim in the form of an annulus of sludge while liquid will collect in the lower central region of the bowl, a rotatable bucket carriage disposed in the upper region of the bowl and rotatable about said axis, a plurality of turntables eccentrically and rotatably mounted on said carriage for rotation about respective vertical axes and for orbiting movement about the axis of the turntable, a plurality of open-sided sludge-receiving buckets movably mounted on the periphery of each turntable whereby upon rotation of the turntables said buckets will move through outside and inside ecliptic positions with respect to the axes of the turntables and carriage means for rotating said carriage at a speed slightly greater than that of the bowl, means for rotating said turntables about their respective axes at a relatively low speed, said buckets during passage through their outside ecliptic positions moving in tangential fashion through said sludge annulus and presenting their open sides in a leading direction so as to gather wads of sludge from said annulus, and during passage through their inside ecliptic positions becoming directionally reversed and elevated above the level of the bowl rim whereby the gathered wads of sludge will be flung radially outwardly over said rim to a region of discharge, there being a liquid outlet in the bottom region of said bowl wall for permitting liquid discharge.
9. A centrifugal separator as set forth in claim 8 and including, additionally, a rotatable cylindrical collector wall concentric with the axis of said bowl, encompassing the rim region of the bowl for impact reception thereagainst of the sludge which is flung outwardly over the rim of the bowl, means for rotating said collector wall at a relatively slow rate of speed, and a fixed scraper blade adapted to traverse said collector wall for sludge-removal purposes.
10. A centrifugal separator as set forth in claim 8 and wherein the means for rotating the carriage at a speed greater than that of the bowl comprises differential gearing effective between the separator bowl and the carriage.
11. A centrifugal separator as set forth in claim 8 and wherein said sludge-receiving buckets are pivotally connected to their respective turntables for individual swinging movement between lowered positions wherein the buckets lie below the level of the bowl rim and elevated positions wherein they are disposed above such level, and cam means are provided for moving said buckets to their directionally reversed elevated positions during movement thereof from their outside to their inside ecliptic positions.
12. A centrifugal separator as set forth in claim 11 and wherein the cam means comprises a cam surface associated with each turntable, fixedly disposed on said carriage, and engageable with successive buckets as they approach their inside ecliptic positions.
13. A centrifugal separator as set forth in claim 11 and including, additionally, cam means for restoring said buckets to their lowered positions during movement thereof from their inside to their outside ecliptic positions.
14. A centrifugal separator as set forth in claim 13 and wherein said last mentioned cam means comprises a cam surface associated with each turntable, fixedly mounted on said carriage, and engageable with successive buckets as they approach their outside ecliptic positions.
15. A centrifugal separator adapted to remove solids from slurry and comprising an upright rotatable bowl having a dished wall which slopes progressively upwardly and outwardly and terminates in an upper open circular rim, a horizontal deck plate fixedly mounted within said bowl for reception of slurry thereon and presenting a circular peripheral edge which is spaced inwardly of the bowl wall and defines, in combination therewith, a first annulus which communicates with the bottom region of the bowl, a horizontal celing plate fixedly mounted within the bowl, spaced upwardly from the deck plate, and presenting a circular peripheral edge which is spaced inwardly of the bowl wall and defines, in combination therewith, a second and narrow annulus which inhibits the flow of solids upwardly above the level of said ceiling plate, means for rotating the bowl at a relatively high speed about a vertical axis whereby the solid constituents of the slurry received on said deck plate will be flung radially outwards of the bowl toward said second narrow annulus so as to establish a sludge seal therebeneath while the liquid constituent of the slurry will be forced downwardly through said first annulus into the central bottom region of the bowl, a horizontal rotatable bucket carriage disposed within said bowl immediately above said ceiling plate and substantially coextensive with the latter, means for rotating said carriage about the vertical axis of the bowl at a rate of speed slightly greater than that of the bowl, a series of plows mounted on the periphery of said carriage and projecting downwardly through said second narrow annulus for circumferential sweeping movement therearound and through the sludge seal for loosening the sludge and elevating the same through said second narrow annulus, a plurality of turntables eccentrically and rotatably mounted on said carriage for rotation about respective vertical axes and for orbiting movement about the axis of the turntable, a plurality of open-sided sludge-receiving buckets movably mounted on the periphery of each turntable whereby upon rotation of such turntable said buckets will move through outside and inside ecliptic position with respect to the axes of the turntable and carriage means for rotating said carriage at a speed slightly different from that of the carriage, and means for rotating said turntables about their respective axes at a relatively low speed, said buckets during passage through their outside ecliptic positions moving in tangential fashion through the loosened and elevated sludge and presenting their open sides in a leading direction so as to gather wads of sludge, and during passage through their inside ecliptic positions becoming directionally reversed and elevated above the level of the bowl rim whereby the gathered wads of sludge will be flung radially outwardly over said rim to a region of discharge, there being an outlet in the bottom region of said bowl wall for the discharge of the separated liquid.
16. A centrifugal separator as set forth in claim 15 and wherein said sludge-receiving buckets are pivotally connected to their respective turntables for individual swinging movement between lowered positions wherein the buckets lie below the level of the bowl rim and elevated positions wherein they are disposed above such level, and cam means are provided for moving said buckets to their directionally reversed elevated positions during movement thereof from their outside to their inside ecliptic positions.
17. A centrifugal separator as set forth in claim 16 and wherein said cam means comprises a caM surface associated with each turntable, fixedly disposed on said bowl and engageable with successive buckets as they approach their inside ecliptic positions.
18. A centrifugal separator as set forth in claim 16 and wherein additional cam means are provided for restoring said buckets to their lowered positions during movement thereof from their inside ecliptic positions to their outside ecliptic positions.
19. A centrifugal separator as set forth in claim 18 and wherein said additional cam means comprises a cam surface associated with each turntable, fixedly mounted on the bowl, and engageable with successive buckets as they approach their outside ecliptic positions.
20. A centrifugal separator as set forth in claim 15 and wherein said means for rotating the carriage at a speed greater than that of the bowl comprises differential gearing effective between the separator bowl and the carriage.
21. A centrifugal separator as set forth in claim 20 and wherein said differential gearing comprises a first jack shaft having a sprocket thereon, a sprocket effectively mounted on the bowl, a belt passing over said sprockets, a second jack shaft having a gear thereon, a gear effectively mounted on the carriage and meshing with the gear on the second jack shaft, and a pair of meshing gears on said jack shafts, said gears on the second jack shaft establishing a gear reduction ratio between the first jack shaft and the gear on said carriage.
22. A centrifugal separator as set forth in claim 15 and including, additionally, a sludge-collector wall encompassing the rim region of the bowl and upon which the sludge which is flung radially over the rim of the bowl collects due to impact thereagainst, a scraper blade adapted to traverse said collector wall for sludge removal purposes, and means establishing relative circumferential movement between the scraper blade and the collector wall.
23. A centrifugal separator as set forth in claim 22 and wherein the collector wall is generally cylindrical and concentric with the axis of the bowl, the scraper blade is fixed, and the means for establishing relative circumferential movement between the blade and wall comprises power means for rotating the collector wall at a relatively low speed.
24. A centrifugal separator as set forth in claim 15 and wherein the means for rotating said turntables about their respective axes comprises a sun gear mounted on said carriage in concentric relationship, and planet gears mounted on said platforms in concentric relationship and meshing with said sun gear.
25. A centrifugal separator as set forth in claim 24 and including, additionally, an annular cover plate secured to the upper circular rim of said dished bowl wall and projecting inwardly of the bowl immediately above said carriage.
26. A centrifugal separator as set forth in claim 25 and including, additionally, a cam surface effectively carried by said cover plate, associated with each turntable, and engageable with successive buckets as they approach their inside ecliptic positions for moving said buckets to their directionally reversed elevated positions.
27. A centrifugal separator as set forth in claim 26 and including, additionally, a second cam surface effectively carried by said cover plate, associated with each turntable, and engageable with successive buckets as they approach their outside ecliptic positions.
28. A centrifugal separator adapted to remove solids from slurry and comprising an upright rotatable bowl having a dished wall which slopes progressively upwardly and outwardly and terminates in an upper open circular rim, a horizontal plate fixedly mounted within said bowl below the level of said rim and presenting a peripheral edge which is spaced inwardly of the bowl wall and defines, in combination therewith, a narrow annulus which inhibits the flow of slurry solids upwardly above the level of said plate, means for rotating the bowl about a vertical axis at high speed whereby the solid constituents of slurry rEceived within the bowl will be flung radially outwardly toward said annulus and establish a sludge seal therebetween while the liquid of the slurry will remain in the central region of the bowl, a plow disposed in the peripheral region of the bowl, projecting downwardly through said annulus, and effective upon circumferential travel around said peripheral region to traverse said sludge seal for loosening the sludge and effecting elevation thereof through said annulus, and means disposed immediately above said plate for withdrawing wads of the thus loosened sludge from the vicinity of the annulus, then conducting them inwardly of the bowl, then elevating them, and finally releasing them for conduction by centrifugal force radially outwardly and over the rim of said bowl, and means for effecting circumferential movement of said plow at a rate of speed slightly different from the speed of rotation of the bowl.
29. A centrifugal separator as set forth in claim 28 and wherein said means for withdrawing wads of sludge from the vicinity of said annulus comprises a circular series of circumferentially spaced, open-sided, scoop-like buckets disposed within the bowl for orbital movement about the axis of the bowl at a rate of speed slightly different from the speed of rotation of the bowl and for rotation about its own central axis, said buckets during passage through their outside ecliptic position moving in tangential fashion into close proximity to the bowl wall and presenting their open sides in a leading direction so as to gather wads of sludge from the vicinity of said annulus, and during passage through their inside ecliptic position becoming directionally reversed so as to present their open sides radially outwardly of the bowl whereby the wads of sludge contained therein will be released.
30. A centrifugal separator as set forth in claim 28 and wherein said means for withdrawing sludge from the vicinity of said annulus and the means for effecting circumferential movement of the plow comprises a circular carriage disposed immediately above said horizontal plate and concentric with the bowl and to which the plow is fixedly secured and to which the buckets are individually pivoted for swinging movement between lowered positions below the level of said rim and raised positions above such rim.
31. A centrifugal separator as set forth in claim 30 and wherein the means for rotating the bowl comprises a central shaft which passes vertically upwardly through the bowl wall in sealing relationship and to which the bowl wall is fixedly secured, said shaft being provided with an axial bore which communicates through radial passages with the interior of the bowl in the central region thereof and immediately below said horizontal plate, and means are provided for continuously supplying slurry to said bore whereby such slurry is fed to the interior of the bowl in the central upper regions thereof via the radial passages.
32. A centrifugal separator as set forth in claim 30 and including, additionally, a circular deck plate fixedly mounted within the bowl immediately below the level of said radial passages, said deck plate presenting a peripheral edge which is spaced inwardly of the bowl wall a slight distance, said circular plates defining therebetween a plenum passage for the outward flow of slurry from said radial passages toward said narrow annulus.
33. A centrifugal separator as set forth in claim 32 and including, additionally, a first series of spacer members interposed between and secured to said circular plates in the peripheral regions thereof and in circumferentially spaced relationship, and a second series of spacer members interposed between and secured to said deck plate and the bowl wall in the peripheral regions thereof and in circumferentially spaced relationship.
34. A centrifugal separator as set forth in claim 33 and wherein the spacer members of the first and second series are in the form of tubular sleeves which are disposed in paired end-to-end alignmEnt, and the means for securing the spacer members to the plates and bowl wall embodies a bolt which projects axially through each pair of aligned sleeves.
35. A centrifugal separator as set forth in claim 28 and including, additionally, a rotatable cylindrical sludge-collector wall concentric with the axis of the bowl, encompassing the rim region of the bowl and against which sludge which is flung over the rim of the bowl impacts, means for rotating said collector wall about said axis of the bowl at a relatively low speed, and a fixed scraper blade positioned in close proximity to the inside surface of said wall for sludge removal purposes.
36. A centrifugal separator as set forth in claim 35 and wherein the means for rotating said bowl comprises a central shaft which passes vertically upwardly through the bowl wall in sealing relationship and to which the bowl wall is fixedly secured, a first electric motor is operatively connected to said central shaft in driving relationship, and the means for rotating the collector wall comprises a second electric motor provided with an output shaft having a pulley thereon, and a belt encompassing said pulley and the cylindrical sludge-collector wall and in direct contact with the latter.
37. A centrifugal separator as set forth in claim 36 and wherein said central shaft has formed therein an axial bore which communicates through radial passages with the interior of the bowl, said passages opening into the interior of the bowl immediately below the level of said horizontal circular plate.
38. A centrifugal separator as set forth in claim 8 and wherein said turntables are equally and circumferentially spaced about said vertical axis in centrifugally balanced relationship.
39. A centrifugal separator as set forth in claim 38 and wherein the means for rotating said turntables comprises a planetary gear system including a sun gear coaxial with the bowl and fixedly secured thereto for rotation in unison therewith, and a planet gear on each turntable, coaxial therewith, and meshing with said sun gear.
40. A centrifugal separator as set forth in claim 8 and wherein said buckets are of scoop-like construction having leading edges which are tapered to provide sharp linear edges which cooperate with the bowl shell in loosening sludge therefrom and conducting the same to the interior of the buckets.
41. A centrifugal separator as set forth in claim 15 and wherein said turntables are in the form of cylindrical members having inwardly extending recesses in the periphery thereof and arranged in equally and circumferentially spaced relationship, the buckets are provided with shank portions which project radially inwardly of the turntables and are normally disposed within the recesses, pivot pins project across the recesses and through the shank portions and thus pivotally connect the buckets to the turntable for swinging movement between lowered positions wherein the buckets lie substantially in the plane of the turntable and elevated positions wherein they are disposed above said plane.
42. A centrifugal separator as set forth in claim 41 and wherein cam means are fixedly mounted on the carriage in the vicinity of each turntable and engageable with the buckets thereof for swinging the latter upwardly to their raised positions during movement of the buckets toward their inside ecliptic positions.
43. A centrifugal separator as set forth in claim 42 and wherein additional cam means are fixedly mounted on the carriage in the vicinity of each turntable and engageable with the buckets thereof for swinging the latter downwardly to their lowered positions during movement of the buckets toward their outside ecliptic positions.
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