US1784510A - Centrifugal apparatus - Google Patents
Centrifugal apparatus Download PDFInfo
- Publication number
- US1784510A US1784510A US361146A US36114629A US1784510A US 1784510 A US1784510 A US 1784510A US 361146 A US361146 A US 361146A US 36114629 A US36114629 A US 36114629A US 1784510 A US1784510 A US 1784510A
- Authority
- US
- United States
- Prior art keywords
- bowl
- plates
- liquid
- cones
- dividing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
- B04B1/04—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls
- B04B1/08—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls of conical shape
Definitions
- centrifugal purifiers or separators It is well known that there are, at the present time two main types of centrifugal purifiers or separators:
- a centrifugal separator comprising separating cones has a much greater separation than one not so equipped, as the distance which the particles to be separated have to travel, until they reach a surface on which they agglomerate, is reduced by the plates, which means to say that the chances of a complete dissociation of the particles to be separated are increased by this device.
- My invention has for an object to combine the advantages of both these types described above in eliminating at the same time their drawbacks.
- the present invention concerns, moreover, a special device for assembling the plates, which device allows of the plates being used in tubular bowls of an existing type so as to transform them into bowls conforming to the present invention.
- Fig. 1 shows a section through an ordinary tubular bowl and the way the sediments which have been separated by the centrifugal force from the liquid treated, are deposited along the inner surface of the bowl.
- Fig. 2 shows a longitudinal part section, part elevation, of a centrifugal bowl, according to the present invention and intended simply for the clarification of a liquid containing in suspension solid particles of a density greater than that of the liquid from which it is to be separated.
- Fig. 3 is a part section, part elevation of a separator bowl intended specially for the separation of two liquids which are mixed or emulsified and which may also contain in suspension solid matter to be eliminated.
- Figs. 4 and 5 show in perspective the mandrel used for removing from the bowl the group of plates, in case of cleaning and the portion of the hub carrying the plates.
- Fig. 1 which represents a tubular bowl of conventional type for clarification
- 1 rep resents the tubular shell itself and 2 and 3 respectively the top and the removable bottom of this shell.
- the shell is suspended and rotated at its upper portion.
- the sediments separated during the centrifuging are deposited as 6, in the shape of a paraboloid, with its apex directed towards the bottom 3.
- Fig. 2 which shows a clarifier bowl in accordance with the present invention, comprising the usual type of bowl,
- dividing cones 4A represents the dividing cones which are mounted between two pieces 5A and 6A shaped like truncated cones which shall be hereafter referred to as retaining cones.
- the cones are of such peripheral diameter as to provide a space between the outer edges the reof and the walls of the bowl of such size as to permit liquid to enter the space and deposit the small quantity of solid matter remaining therein. It is necessary that the deposition of solid matter which takes place on the side of the bowl opposite the plates does not obstruct too much the passage of the liquid as it comes to the series of plates,
- the total extent of the plates covers approximately a quarter of the length of the bowl, at the top so as not to make the bowl un duly heavy and to obviate changing the design of the spindle which gives full satisfaction.
- the retaining cones 5A and 6A are adjusted without any play on the hub 7 which is provided with three keys 8, spaced at 120.
- One of these keys is of distinctive size or shape and is adapted to fit in correspondingly-sized o-r shaped grooves in the various cones for correctly centering the entire assembly.
- the top cone 5A. 1s first positioned on the hub 7 and the remaining cones introduced thereafter.
- a stop of any desired character (not shown) ' may be affixed to the hub for limiting the movement of the top cone 5A.
- the keys fit within corresponding slots provided in the plates and the upper and lower retaining cones in such manner as to centralize the same and at the same time to provide an annular passage between the hub and the inner edges of the plates and the upper cone 5A, which plates and cone have an internal diameter greater than the diameter of the hub.
- the different parts constituting the plates are mounted on the hub and are locked by -a cylindrical nut, 11, the plates being regularly spaced by a certain number of distance pieces 12 stamped on each plate and distributed around the circumference of each plate. These distance pieces can be replaced by bars soldered to the upper face of each plate.
- Three hangers 14 in the base 13 of the upper cone A carry on a. spindle the articulated springs 15.
- the base 13 of the cone 5A is of such diameter as to form in effect asubstantially liquidtight seal against the inner edge of the shell and the upper collar 16 of this cone forms a similar substantially liquid-tight seal with the lower face of the bowl top.
- the springs serve to hold the assembled cones and plates in position within the shell to prevent lengthwise movement thereof relative to the shell.
- the ends 17 of these springs slide in corresponding slots 18 in the bottom cone 6A.
- the top portion of the hub 7 is provided with three channelled bosses 19 so as to receive three pins 19A which are secured in the bowl top. These pins insure of the whole system being correctly put in place and of its being rotated.
- the devise is completed by a three wing partition 20, which communicates the rotary motion to the liquid and is separated from the group of plates and serves to impart speed to the liquid as it is admitted intothe centrifuge.
- This partition at its upper portion is provided with a direction cone 21, preferably removable, whose apex is directed towards the bottom of the bowl. The cone serves to direct the liquid towards the outer edge of the plates and to prevent it from flowing into the lower cone 6A. 7
- the various parts of the apparatus are placed in their positions as follows after taking the removable bottom 3 off, the dividing cones are pushed from the bottom into the bowl by means of the tree-wing partition and if necessary by means of the cone 21.
- the three wings of this partition fit into the slots 18 of the lower cone 6A and guide the device whilst it is being put in its proper position.
- One of the wings is marked with some sort of punch mark remaining in touch with the side of the bowl marked with a corresponding punch mark.
- the three-wing partition is held in place by the springs 22, made of pianowire which expand during the-working of thecentrifuge and the pressure which they exert against the side of the bowl prevents the transversal displacement of the partition.
- the three-wing partition butts against the deflector 4C1 and this prevents the longitudinal displacement of the group of plates once thebowl, extending as far as the bottom of the group of plates, is scraped and removed from the bowl.
- the cone 21 and the group of dividing cones are then simultaneously extracted, by means of a mandrel, (shown separately on a bigger scale in Fig. 4) which fits into the bore of the hu
- the arrangement for locking the mandrel to the hub is shown as follows, although it could be modified in a variety of ways.
- the end of the mandrel spindle is provided with three lateral tenons 24;, extending each over These tenons may fit .into mortises 31 Which are provided inside the hub 7, which is shown separately on a larger scale in Fig. 5.
- the mandrel is inserted the tenons project slightly beyond the mortises and the mandrel can be rotated about its axis until the tenons correspond with the projections on the hub.
- the mandrel comprises a disk 25, with three pins 26 which butt against 3 stops 27 provided on the bottom edge of the hub. If the mandrel is pulled by its handle 28 after it has been locked in the hub, one can subject it to a big pull by sliding the metal mass 29 along the mandrel spindle 27, until it hits the collar stop 30.
- the group of plates can be extracted in spite of the friction which takes place between the elements of the group and any sediment that might still adhere to the sides of the bowl.
- the group of plates can then be dismantled, to enable of the cones being easily cleaned, simply by unscrewing the nut'with a special spanner.
- the latter acts as an ordinary tubular bowl over its lower portion, i. e. over approximately three quarters of its height after which the liquid guided by the cone 21 reaches the portion containing the plates and is then treated as in a centrifugal bowl provided with stratifying plates.
- Fig. 3 represents, as has been said above, a bowl provided with an assembly of plates for the separation of a mixture or an emulsionof two liquids of different densities.
- This assembly of plates is placed into a bowl for separating the liquids which is provided with two sets of outlet orifices, one set for the light and heavy liquids respectively. These two sets of orifices are at different distances from the axis of the bowl so as to allow the independent collection of liquids. Under the action of centrifugal force, the two liquids separate in two layers in that portion of the bowl which does not contain any plates, and in order not to remix them when they pass through the dividing plates, it is necessary for culated, so as to be sufficiently large not to retard the motion of the liquid, without, however, decreasing too much the area of the plates. To enable the flowing liquid to reach the dividing plates without whirl, the lower retaining cone 6A can be lengthened to contact with the inside of the bowl.
- An auxiliary removable cone 35 can be provided over the three-wing partition 20 so that the current of liquid between any two wings is led towardsthe set of orifices 33 provided in the lower retaining cone 6A and thence into the group of plates 4A where it is split into layers, portions of heavy liquid passing through the plates towards the periphery and rising up the annular. space 37 until they reach the set of bowl outlet orifices 38, provided for the heat-*ier liquid, whilst the portions of the lighter liquid are led through the dividing plates towards a channel 39 formed by the difference between the outside diameter of the hub and the inside diameters of the plates. From.
- the light liquid is directed towards the outlet orifices 40, which are situated in the neck of the bowl.
- the inside edge 47.0f ring 44 serves as the overflow edge for the heavy liquid.
- the auxiliarycone 35 could also be left out and in that case one might provide in the lower cone 6A a series of holes 43 placed as near as possible to the axis of the dividing plates and serving as a passage for the light liquid.
- the dividing line can be regulated so as tomaintain it inside the channel 33, 34.
- This changing or regulating the dividing line can be accomplished by use of diaphragms 42 and rings 44 of varying inside diameter.
- ⁇ Vhat I claim is 1.
- a centrifugal apparatus a cylindrical, bowl, dividing cones extending over a por-' tion only of the bowl height and on the side opposite to the inlet of the liquid, means for assembling the dividii'lg cones in a removable group, and springs, carried by this groupand which, under the action of centrifugal force come to bear against the sides of the bowl so as to center the group in the bowl.
- a centrifugal apparatus In a centrifugal apparatus a cylindrical bowl, dividing cones extending over a portion only of the bowl height and on the side opposite to the inlet of the liquid, and a multiple removable partition, extending in the portion of the bowl opposite to that containing the dividing cones.
- a centrifugal apparatus In a centrifugal apparatus a cylindrical bowl, dividing cones extending over a portion only of the bowl height and on the side opposite to the inlet of the liquid, a multiple removable partition, extending in the portion of the bowl opposite to that containing the dividing cones and a cone, carried by an intermediate part between the group of dividing cones and the multiple partition, whose apex is turned towards the inlet orifice and which bears against the lower cone retaining the dividing cones so as to guide the liquid.
- a centrifugal separator In a centrifugal separator a cylindrical bowl, dividing cones extending over a portion only of the bowl height and on the side oppov site to the inlet of the liquid, an upper and a lower cone carried by the hub, an overflow orifice for the light liquid, an overflow orifice for the heavy liquid, orifices provided in the lower retaining cone and in the dividing cones at the level of separation of the two liquids.
- a centrifugal separator In a centrifugal separator a cylindrical bowl, dividing cones extending over a portion only of the bowl height and on the side opposite to the inlet of the liquid, an upper and a lower cone carried by the hub, and orifices provided in the lower retaining cone and in the dividing cones at the level of separation of the two liquids.
- a centrifugal separator In a centrifugal separator a cylindrical bowl, dividing cones extending over a portion only of the bowl height and on the side opposite to the inlet of the liquid, an upper and a lower cone carried by the hub, and orifices, provided in the lower retaining cone and in the dividing cones at the level of separation of the two liquids.
- a centrifugal apparatus a cylindrical bowl, dividing cones extending over a portion only of the bowl height and on the side opposite to the inlet of the liquid, means for assembling the dividing cones in a group, and means for temporarily fixing the upper portion of this group to the bowl top to enable the group to be rotated.
- a centrifugal apparatus In a centrifugal apparatus a cylindrical bowl, dividing cones extending over a portion only of the bowl height and on the side opposite to the inlet of the liquid, a multiple removable partition,'extending in the portion of the bowl opposite to that containing the dividing cones, and springs to secure the bearing of the multiple partition against the sides of the bowl. 7
- a centrifugal apparatus a cylindrical bowl, dividing cones extending over a portion only of the bowl height and on the side opposite to the inlet of the liquid, a multiple removable partition, extending in the portion of the bowl opposite to that containing the dividing cones, a lower lid, at the bottom, carrying the inlet orifice of the liquid, and a deflector carried by this lid and maintaining the multiple partition in place against any longitudinal displacements.
- a cylindrical bowl In a centrifugal apparatus, a cylindrical bowl, dividing cones extending over a relatively small portion of the bowl height liquid, means for assembling the and on the side opposite to the inlet of the dividing cones into a removable group and springs carried by this group for holding the group lzgailnst lengthwise movement within the 11.
- a centrifugal separator In a centrifugal separator, a cylindrical bowl, dividing cones extending over a portion only of the bowl height and on the side opposite to the inlet of the liquid, an upper and a lower cone carried by the hub, an overflow orifice for the light liquid, an overflow orifice for the heavy liquid, orifices provided in the lower retaining cone and in the dividing cones at the level of separation of the two liquids, and an adjustable and replaceable diaphragm to regulate the level of the overflow edge of one of the liquids.
Landscapes
- Centrifugal Separators (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
LU1784510X | 1928-05-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
US1784510A true US1784510A (en) | 1930-12-09 |
Family
ID=19734939
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US361146A Expired - Lifetime US1784510A (en) | 1928-05-07 | 1929-05-07 | Centrifugal apparatus |
Country Status (3)
Country | Link |
---|---|
US (1) | US1784510A (fi) |
FR (1) | FR677035A (fi) |
NL (2) | NL28031C (fi) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5575912A (en) * | 1995-01-25 | 1996-11-19 | Fleetguard, Inc. | Self-driven, cone-stack type centrifuge |
US5637217A (en) * | 1995-01-25 | 1997-06-10 | Fleetguard, Inc. | Self-driven, cone-stack type centrifuge |
US6364822B1 (en) | 2000-12-07 | 2002-04-02 | Fleetguard, Inc. | Hero-turbine centrifuge with drainage enhancing baffle devices |
WO2007114766A1 (en) * | 2006-04-04 | 2007-10-11 | Alfa Laval Corporate Ab | Rotor unit for a centrifugal separator |
-
0
- NL NL46194D patent/NL46194B/xx unknown
- NL NL28031D patent/NL28031C/xx active
-
1929
- 1929-05-07 FR FR677035D patent/FR677035A/fr not_active Expired
- 1929-05-07 US US361146A patent/US1784510A/en not_active Expired - Lifetime
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5575912A (en) * | 1995-01-25 | 1996-11-19 | Fleetguard, Inc. | Self-driven, cone-stack type centrifuge |
US5637217A (en) * | 1995-01-25 | 1997-06-10 | Fleetguard, Inc. | Self-driven, cone-stack type centrifuge |
US5795477A (en) * | 1995-01-25 | 1998-08-18 | Fleetguard, Inc. | Self-driven, cone-stack type centrifuge |
US6364822B1 (en) | 2000-12-07 | 2002-04-02 | Fleetguard, Inc. | Hero-turbine centrifuge with drainage enhancing baffle devices |
WO2007114766A1 (en) * | 2006-04-04 | 2007-10-11 | Alfa Laval Corporate Ab | Rotor unit for a centrifugal separator |
US20090137378A1 (en) * | 2006-04-04 | 2009-05-28 | Alfa Laval Corporate Ab | Rotor unit for a centrifugal separator |
US8308626B2 (en) | 2006-04-04 | 2012-11-13 | Alfa Laval Corporate Ab | Rotor unit for a centrifugal separator having undetachably joined separating discs |
CN101415499B (zh) * | 2006-04-04 | 2015-06-24 | 阿尔法拉瓦尔股份有限公司 | 用于离心分离器的转子单元 |
US9550192B2 (en) | 2006-04-04 | 2017-01-24 | Alfa Laval Corporate Ab | Rotor unit for a centrifugal separator having undetachably joined separating discs |
Also Published As
Publication number | Publication date |
---|---|
NL28031C (fi) | |
NL46194B (fi) | |
FR677035A (fr) | 1930-03-03 |
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