US3454226A - Atomizer wheel for the atomization of suspensions of hard-wearing materials - Google Patents

Atomizer wheel for the atomization of suspensions of hard-wearing materials Download PDF

Info

Publication number
US3454226A
US3454226A US536326A US3454226DA US3454226A US 3454226 A US3454226 A US 3454226A US 536326 A US536326 A US 536326A US 3454226D A US3454226D A US 3454226DA US 3454226 A US3454226 A US 3454226A
Authority
US
United States
Prior art keywords
wheel
wear
bushings
wall
hub
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
Application number
US536326A
Inventor
Kaj Nielsen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GEA Process Engineering AS
Original Assignee
Niro Atomizer AS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Niro Atomizer AS filed Critical Niro Atomizer AS
Application granted granted Critical
Publication of US3454226A publication Critical patent/US3454226A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/02—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D1/00—Evaporating
    • B01D1/16—Evaporating by spraying
    • B01D1/20—Sprayers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/10—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces
    • B05B3/1007—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces characterised by the rotating member
    • B05B3/1021—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces characterised by the rotating member with individual passages at its periphery
    • B05B3/1028—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces characterised by the rotating member with individual passages at its periphery the passages comprising an insert
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/24—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by shooting or throwing the materials, e.g. after which the materials are subject to impact

Definitions

  • FIGA W is a diagrammatic representation of FIGA W.
  • This invention relates to an atomizer wheel for the atomization of suspensions of hard-wearing materials and of the type which concentrically with the hub of the wheel has an annular bowl-shaped space in the substantially cylindrical outer wall of which there are provided a plurality of discharge openings having linings of a wear-resistant sintered material.
  • sintered materia means a material where the hard grains are stably interconnected no matter whether such interconnection has been effected by fusing together the surfaces of the grains or by embedding the grains in some basic substance such as, by Way of example, is being used in the manufacture of Wolfram carbide bodies.
  • ticles for example a suspension of ceramic clay
  • a very hard wear is taking place on account of the very high velocities of discharge from the atomizer wheel caused by the centrifugal force.
  • a conventional atomizer wheel made of the commonly used wear-resistant types of steel will have an extremely short lifetime, sometimes only a few hours or even less before they have become so heavily worn as to be entirely unserviceable.
  • the invention has for its object to provide an atomizer wheel of the type concerned in connection with which a very considerable increase of the lifetime is obtained.
  • One object of the invention is to provide the holes with linings of tapered bushings of wear-resistant sintered material, projecting into the bowl-shaped space.
  • the coating thus obtained is, to be sure, not wear-resistant in the proper sense of the word in that it consists of loosely interconnected particles which are inceimpulsly torn way from the surface of the layer by the suspension flowing towards the openings of the bushings but the centrifugation of particles out into said layer will continuously have the effect that the torn-away particles are replaced by fresh particles so that the parts of the coating adjoining the wall are preserved and preclude any wear of said wall. In practice it proves that in this way lifetime can increase several hundred times.
  • the bushings consist of the said wear-resistant sintered material, they will nevertheless be subject to wear but they are readily replaceable because they are only kept in place by the centrifugal force which, as a matter of fact, is inoperative when the wheel is at rest.
  • the wear to which the bushings are exposed is unilateral and their lifetime may, therefore, be increased by turning them gradually as they are worn.
  • the openings of the bushings may by way of example have a circular cross section but preferably they are of a square cross section.
  • the square cross section determines four different well-defined positions of the bushings. Further the wearing surfaces are plane which has proved to involve a longer lifetime than curved wearing surfaces.
  • a wearing groove may be produced in the annular space at the place where the surface of said coating adjoins the bottom of the wheel. This wear may be essentially reduced when the bottom of the bowl-shaped space has a conical shape sloping outwardly towards the outer wall.
  • a layer of a wear-resistant material is provided on the bottom surface of the bowlshaped space made for either in the shape of an embedded annular plate or a sintered surface coating at any rate in the outermost part of the bottom surface.
  • the wear may be less hard than in the bushings proper and through a surface coating of wear-resistant material it is possible to obtain the advantage that the lifetime of the wheel proper becomes of a length sufficient for permitting the bushings being replaced a number of times before the wheel is discardable. If using an embedded ring this ring can also be replaced and, consequently, the longest imaginable lifetime of the wheel is attained.
  • FIG. 1 shows a sectional view an embodiment of the atomizer wheel according to the invention.
  • FIG. 2 the same atomizer wheel as seen from the supply side.
  • FIG. 3 shows a modified embodiment of the atomizer wheel in a sectional view.
  • FIG. 4 a modification of a part of the atomizer wheel shown in FIG. 1 or 3.
  • the wheel illustrated in FIG. 1 is substantially of bowlshape with a centrally disposed hub 1 whereby an annular space 2 appears between the hub 1 and the outer wall 3 of the wheel which space is further defined by the wheel portion 4 connecting the hub 1 with the outer wall 3 and forming the bottom of the annular space 2. Further, an annular cover plate 5 is secured to the upper side of the wheel, said cover plate surrounding the hub 1 in such a manner as to form between said hub and the annular plate 5 an annular opening 6 leading into the space 2.
  • the wheel is intended for being mounted into a known spray-drying apparatus on a shaft which during operation rotates at a very high velocity, a suspension being supplied to the space through the opening 6 and precipitated in atomized form through openings in the side wall 3 to a surrounding drying chamber wherein the fine particles formed by the atomization are dried so that their contents of solid matter fall to the bottom of the drying chamber in the form of a fine powder.
  • FIGS. 1 and 2 show a single one of said openings, and according to the invention a bushing 7 of a wearresistant sintered material, for example Wolfram carbide, silicon carbide, aluminium oxide or tetraboron carbide, is disposed in each of said openings.
  • a wearresistant sintered material for example Wolfram carbide, silicon carbide, aluminium oxide or tetraboron carbide
  • These bushings 7 have conical outer surfaces with outwardly decreasing diameter and, consequently, they can be loosely disposed in said openings as they are pressed outwardly by the centrifugal force when the Wheel is rotated and, consequently, they are immovably and tightfittingly secured in the openings in the outer wall.
  • the bushings 7 are preferably ground flush with the cylindrical outer surface of the wheel whilst their inwardly facing ends extend a distance into the space 2 beyond the outer wall 3 as seen in FIG. 1.
  • a certain Wearing effect may occur at the bottom of the space 2 and primarily at the vicinity of the bordering line 8 for the material deposited on the outer wall 3.
  • an annular plate 9 of a wear-resistant material is embedded at the bottom of the space. If deemed appropriate, this material may likewise be a hard sintered material but since this area is subject to somewhat less wear it will often suffice to use a wear-resistant metal alloy, for example a wearresistant type of steel.
  • FIG. 3 differs from that shown in FIG. 1 in that instead of the annular plate 9 a layer 10 of a wear-resistant material has been applied to the bottom of the space 2, said layer extending a distance upwardly along the hub 1. Since the said layer is not replaceable in the same manner as that used in FIG. 1, it may be expedient that said layer consists of a wearresistant sintered material.
  • FIG. 4 shows a modified embodiment of the bushings having square cross-section instead of circular crosssection as shown in FIGS. 1 and 3.
  • the bushings are tapered at least over part of its length 11 corresponding to the conical part of the bushings 7 in FIGS. 1 and 3.
  • the bottom of the annular space may be conically sloping outwards from the hub 1 as indicated in FIG. 1 by means of a dotted line 12.
  • An atomizer wheel comprising a hub, an outer wall part coaxially disposed about said hub and a bottom part connecting said outer wall part with said hub, said outer wall part, said hub, and said bottom part defining between them an annular chamber, a ring-shaped cover member detachably connected to said outer Wall part, said cover member having an inner circumference defining together with said hub an unobstructed space in communication with said annular chamber, said outer wall part being provided with a plurality of regularly shaped holes uniformly distributed around the circumference of the outer wall part, said holes forming the only outlet openings of the wheel, each of said holes being lined with bushing of wear-resistant sintered material, said holes and said bushings being tapered in direction radially outwardly from said chamber, the inner end of each of said bushings projecting into said chamber while their outer ends are substantially flush with the outside of said outer wall part.
  • An atomizer wheel comprising a hub, an outer wall member coaxially disposed about said hub, a bottom member connecting said outer wall member with said hub, the upper surface of said bottom member being of a wear-resistant material, said outer wall member, said hub, and said bottom member defining between them an annular chamber, a ring-shaped cover member detachably connected to said outer wall member, said cover member having an inner circumference defining, together with said hub, an inlet opening in communication with said annular chamber, said outer wall member being provided with a plurality of uniform outlet openings uniformly distributed about the periphery of the outer wall part and forming 5 6 the only outlet openings of said wheel, and a bushing of 2,695,748 11/1954 Millard 23347 wear-resistant sintered material extending radially through 3,079,069 2/ 1963' Thylefors 23 3-46 X R each opening and projecting into said chamber, said holes 3,094,487 6/1963 Van Arsdell 23346 XR and said bushings being tape

Description

K. NIELSE 3,454,226 M WHEEL FOR THE MIZATION OF SP 0N5 0F HARD-WEARING MATERIALS Filed March 22. 1966 ATO SU July 8, 1969 INVENTOR v ATTORNEYS 19/ 27/ FIG.3
FIGA W:
United States Patent 6 Int. Cl. Bb 3/10; F23d 11/08; B04b 11/00 U.S. Cl. 239-224 7 Claims ABSTRACT OF THE DISCLOSURE An atomizer wheel comprising an annular chamber provided with a number of conical outlet holes lined with bushings extending a distance into the chamber.
This invention relates to an atomizer wheel for the atomization of suspensions of hard-wearing materials and of the type which concentrically with the hub of the wheel has an annular bowl-shaped space in the substantially cylindrical outer wall of which there are provided a plurality of discharge openings having linings of a wear-resistant sintered material.
In this case sintered materia means a material where the hard grains are stably interconnected no matter whether such interconnection has been effected by fusing together the surfaces of the grains or by embedding the grains in some basic substance such as, by Way of example, is being used in the manufacture of Wolfram carbide bodies.
In the atomization of suspensions which contain solid particles of a hard material, especially sharp edged par-.
ticles, for example a suspension of ceramic clay, a very hard wear is taking place on account of the very high velocities of discharge from the atomizer wheel caused by the centrifugal force. Thus, a conventional atomizer wheel made of the commonly used wear-resistant types of steel, will have an extremely short lifetime, sometimes only a few hours or even less before they have become so heavily worn as to be entirely unserviceable.
With a view to reducing the wear it is known to employ wear-resistant sintered materials in such places where the wear occurs.
On account of their hardness such sintered materials are practically speaking not machinable so that the wearresistant parts to be used must be produced in their final shape by sintering which in conjunction with the circumstance that they do in all essentials only withstand compressive forces and must not, on account of their brittleness, be exposed to tensile or bending stresses of significance, has the effect that they only lend themselves to be produced in very simple geometric shapes.
There is known an atomizer wheel of the type concerned having slot discharge openings where plates of such sintered material are inserted into the slot openings at the walls thereof across which the discharge is taking place. The plates are loosely disposed for the very reason of avoiding bending stresses and are retained by their end edges engaging a projecting edge provided at the external opening of the slot, against which latter edge they are firmly pressed by the centrifugal force during rotation of the wheel. This measure prolongs the lifetime of the wheel to some extent but it proves in practice that this is nevertheless only a rather limited improvement in that the liquid is by the centrifugal force pressed in between the loosely deposited plates and the adjoining surface of the wheel proper whereby the material of the wheel is quickly worn to such extent as to make the wheel discardable.
Instead of the slot openings one has tried to use cylindrical holes in which there are disposed bushings of a wear-resistant sintered material but in this case it proves that the outer wall of the wheel is worn in the area surrounding the bushings so that the wheel is discardable after a few hours of operation so that practically no improvement is obtained by using the wear-resistant bushmgs.
The invention has for its object to provide an atomizer wheel of the type concerned in connection with which a very considerable increase of the lifetime is obtained.
One object of the invention is to provide the holes with linings of tapered bushings of wear-resistant sintered material, projecting into the bowl-shaped space.
As a consequence of the tapered shape of the bushings they are during operation of the wheel pressed firmly against the correspondingly shaped wall surfaces of the openings by the centrifugal force so that any discharge of liquid between the bushings and the material of the wheel proper is avoided. As the bushings extend a distance into the annular space in the wheel, a layer of liquid will deposit on the outer wall during the rotation of the wheel. Owing to the centrifugal forces the heavier parts of the layer i.e. the suspended solid material is separated from the liquid in the layer and deposited directly on the wall so as to fill the area surrounding the inwardly extending portions of the bushings. The coating thus obtained is, to be sure, not wear-resistant in the proper sense of the word in that it consists of loosely interconnected particles which are incessantly torn way from the surface of the layer by the suspension flowing towards the openings of the bushings but the centrifugation of particles out into said layer will continuously have the effect that the torn-away particles are replaced by fresh particles so that the parts of the coating adjoining the wall are preserved and preclude any wear of said wall. In practice it proves that in this way lifetime can increase several hundred times.
Although the bushings consist of the said wear-resistant sintered material, they will nevertheless be subject to wear but they are readily replaceable because they are only kept in place by the centrifugal force which, as a matter of fact, is inoperative when the wheel is at rest. The wear to which the bushings are exposed is unilateral and their lifetime may, therefore, be increased by turning them gradually as they are worn.
The openings of the bushings may by way of example have a circular cross section but preferably they are of a square cross section. The square cross section determines four different well-defined positions of the bushings. Further the wearing surfaces are plane which has proved to involve a longer lifetime than curved wearing surfaces.
A wearing groove may be produced in the annular space at the place where the surface of said coating adjoins the bottom of the wheel. This wear may be essentially reduced when the bottom of the bowl-shaped space has a conical shape sloping outwardly towards the outer wall.
In a particular embodiment of the atomizer wheel according to the invention a layer of a wear-resistant material is provided on the bottom surface of the bowlshaped space made for either in the shape of an embedded annular plate or a sintered surface coating at any rate in the outermost part of the bottom surface. In this place the wear may be less hard than in the bushings proper and through a surface coating of wear-resistant material it is possible to obtain the advantage that the lifetime of the wheel proper becomes of a length sufficient for permitting the bushings being replaced a number of times before the wheel is discardable. If using an embedded ring this ring can also be replaced and, consequently, the longest imaginable lifetime of the wheel is attained.
Sometimes it may be difficult or at any rate expensive to produce the said annular plate of sintered material, but excellent results are also obtained by using a ring of a wear-resistant metal alloy because the wear at this place is, as mentioned above, less hard than in the discharge openings.
The invention will be particularly explained below with reference to the accompanying drawings.
FIG. 1 shows a sectional view an embodiment of the atomizer wheel according to the invention.
FIG. 2 the same atomizer wheel as seen from the supply side.
FIG. 3 shows a modified embodiment of the atomizer wheel in a sectional view.
FIG. 4 a modification of a part of the atomizer wheel shown in FIG. 1 or 3.
The wheel illustrated in FIG. 1 is substantially of bowlshape with a centrally disposed hub 1 whereby an annular space 2 appears between the hub 1 and the outer wall 3 of the wheel which space is further defined by the wheel portion 4 connecting the hub 1 with the outer wall 3 and forming the bottom of the annular space 2. Further, an annular cover plate 5 is secured to the upper side of the wheel, said cover plate surrounding the hub 1 in such a manner as to form between said hub and the annular plate 5 an annular opening 6 leading into the space 2.
The wheel is intended for being mounted into a known spray-drying apparatus on a shaft which during operation rotates at a very high velocity, a suspension being supplied to the space through the opening 6 and precipitated in atomized form through openings in the side wall 3 to a surrounding drying chamber wherein the fine particles formed by the atomization are dried so that their contents of solid matter fall to the bottom of the drying chamber in the form of a fine powder.
FIGS. 1 and 2 show a single one of said openings, and according to the invention a bushing 7 of a wearresistant sintered material, for example Wolfram carbide, silicon carbide, aluminium oxide or tetraboron carbide, is disposed in each of said openings.
These bushings 7 have conical outer surfaces with outwardly decreasing diameter and, consequently, they can be loosely disposed in said openings as they are pressed outwardly by the centrifugal force when the Wheel is rotated and, consequently, they are immovably and tightfittingly secured in the openings in the outer wall.
At their outer ends the bushings 7 are preferably ground flush with the cylindrical outer surface of the wheel whilst their inwardly facing ends extend a distance into the space 2 beyond the outer wall 3 as seen in FIG. 1.
When the wheel commences to rotate the surroundings of the bushings adjoining the outer wall will very quickly be filled with a layer of the suspension as a consequence of the effect of the centrifugal force, as indicated by a dotted line 8. By the centrifuging effect the material of this layer is quickly separated so that the heavier parts, i.e. the contents of solid wearing particles will adopt the outer position closed to the outer wall 3, whilst the lighter parts, i.e. the liquid will lie innermost. In this manner the surroundings of the bushings 7 are quickly filled with a layer of these solid particles which will thus protect the material of the wheel proper from wear.
A certain Wearing effect may occur at the bottom of the space 2 and primarily at the vicinity of the bordering line 8 for the material deposited on the outer wall 3. For the purpose of preventing the wheel from being quickly ruined by this wearing effect, an annular plate 9 of a wear-resistant material is embedded at the bottom of the space. If deemed appropriate, this material may likewise be a hard sintered material but since this area is subject to somewhat less wear it will often suffice to use a wear-resistant metal alloy, for example a wearresistant type of steel.
The embodiment shown in FIG. 3 differs from that shown in FIG. 1 in that instead of the annular plate 9 a layer 10 of a wear-resistant material has been applied to the bottom of the space 2, said layer extending a distance upwardly along the hub 1. Since the said layer is not replaceable in the same manner as that used in FIG. 1, it may be expedient that said layer consists of a wearresistant sintered material.
FIG. 4 shows a modified embodiment of the bushings having square cross-section instead of circular crosssection as shown in FIGS. 1 and 3. The bushings are tapered at least over part of its length 11 corresponding to the conical part of the bushings 7 in FIGS. 1 and 3.
The bottom of the annular space may be conically sloping outwards from the hub 1 as indicated in FIG. 1 by means of a dotted line 12.
I claim:
1. An atomizer wheel comprising a hub, an outer wall part coaxially disposed about said hub and a bottom part connecting said outer wall part with said hub, said outer wall part, said hub, and said bottom part defining between them an annular chamber, a ring-shaped cover member detachably connected to said outer Wall part, said cover member having an inner circumference defining together with said hub an unobstructed space in communication with said annular chamber, said outer wall part being provided with a plurality of regularly shaped holes uniformly distributed around the circumference of the outer wall part, said holes forming the only outlet openings of the wheel, each of said holes being lined with bushing of wear-resistant sintered material, said holes and said bushings being tapered in direction radially outwardly from said chamber, the inner end of each of said bushings projecting into said chamber while their outer ends are substantially flush with the outside of said outer wall part.
2. An atomizer wheel as claimed in claim 1, wherein said bushings have circular cross-sections.
3. An atomizer wheel as claimed in claim 1, wherein said bushings have square shaped cross-sections.
4. An atomizer wheel as claimed in claim 1, wherein a plate of wear-resistant material is embedded in the surface of said bottom part, facing said annular chamber.
5. An atomizer wheel as claimed in claim 1, wherein said bottom part has a sintered wear-resistant surface coating facing said annular chamber.
6. An atomizer wheel as claimed in claim 1, wherein said bottom part has a conical surface sloping outwards from said hub within said annular chamber.
7. An atomizer wheel comprising a hub, an outer wall member coaxially disposed about said hub, a bottom member connecting said outer wall member with said hub, the upper surface of said bottom member being of a wear-resistant material, said outer wall member, said hub, and said bottom member defining between them an annular chamber, a ring-shaped cover member detachably connected to said outer wall member, said cover member having an inner circumference defining, together with said hub, an inlet opening in communication with said annular chamber, said outer wall member being provided with a plurality of uniform outlet openings uniformly distributed about the periphery of the outer wall part and forming 5 6 the only outlet openings of said wheel, and a bushing of 2,695,748 11/1954 Millard 23347 wear-resistant sintered material extending radially through 3,079,069 2/ 1963' Thylefors 23 3-46 X R each opening and projecting into said chamber, said holes 3,094,487 6/1963 Van Arsdell 23346 XR and said bushings being tapered in a direction radially 3,108,952 10/1963 Antz 23314 outward from said chamber. 5 3,228,598 1/ 1966 Keith 23347 XR References Cited HENRY T. KLINKSIEK, Primary Examiner.
UNITED STATES PATENTS US. Cl. X R
2,645,415 7/1953 Strezynski 23328 23347
US536326A 1965-03-26 1966-03-22 Atomizer wheel for the atomization of suspensions of hard-wearing materials Expired - Lifetime US3454226A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK160265AA DK117820B (en) 1965-03-26 1965-03-26 Atomizer wheel for atomizing slurries of highly abrasive materials.

Publications (1)

Publication Number Publication Date
US3454226A true US3454226A (en) 1969-07-08

Family

ID=8106440

Family Applications (2)

Application Number Title Priority Date Filing Date
US536326A Expired - Lifetime US3454226A (en) 1965-03-26 1966-03-22 Atomizer wheel for the atomization of suspensions of hard-wearing materials
US06/413,134 Expired - Lifetime USRE32064E (en) 1965-03-26 1982-08-30 Atomizer wheel for the atomization of suspensions of hard-wearing materials

Family Applications After (1)

Application Number Title Priority Date Filing Date
US06/413,134 Expired - Lifetime USRE32064E (en) 1965-03-26 1982-08-30 Atomizer wheel for the atomization of suspensions of hard-wearing materials

Country Status (14)

Country Link
US (2) US3454226A (en)
AT (1) AT263706B (en)
BE (1) BE677839A (en)
CH (1) CH459798A (en)
CS (1) CS181651B2 (en)
DE (1) DE1475168B1 (en)
DK (1) DK117820B (en)
ES (1) ES324603A1 (en)
FI (1) FI48982C (en)
FR (1) FR1474280A (en)
GB (1) GB1136952A (en)
NL (1) NL150013B (en)
NO (1) NO116365B (en)
SE (1) SE326939B (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3640467A (en) * 1968-11-05 1972-02-08 Niro Atomizer As Atomizer wheel with wear-resistant, sintered bushings
US3887133A (en) * 1972-12-18 1975-06-03 Niro Atomizer As Atomizer wheel for the atomization of slurries
US4121770A (en) * 1976-01-26 1978-10-24 A/S Niro Atomizer Wear-resistant rotor wheel
EP0014056A1 (en) * 1979-01-19 1980-08-06 A/S Niro Atomizer An atomizer wheel for the atomization of liquids
US4527744A (en) * 1982-08-19 1985-07-09 Robert Bosch Gmbh Electromagnetically actuatable valve
US5294059A (en) * 1992-06-09 1994-03-15 Willan W Craig Device for directing the flow of an atomized slurry
US5356075A (en) * 1990-07-10 1994-10-18 Apv Pasilac Anhydro As Atomizer wheel with a divided wear ring
EP1038586A2 (en) 1999-03-24 2000-09-27 Akzo Nobel N.V. Atomizer wheel with improved nozzle for rotary atomizers
US6457657B1 (en) 2000-09-01 2002-10-01 Niro A/S Atomizer wheel with wear-resistant inserts
JP2007222783A (en) * 2006-02-23 2007-09-06 Mitsubishi Heavy Ind Ltd Spray disk structure of rotary atomizer
US20100258654A1 (en) * 2009-04-14 2010-10-14 Spraying Systems Co. Quick disconnect spray nozzle with transversely oriented discharge orifices
US20120048966A1 (en) * 2008-09-09 2012-03-01 John Bulder Rotary Atomizer with Metal Foam Inserts
CN102527565A (en) * 2011-12-27 2012-07-04 重庆科技学院 Atomizing plate of high speed centrifugal type atomizer
CN102553741A (en) * 2011-12-27 2012-07-11 重庆科技学院 Double-stage atomized high-speed centrifugal atomizing disc
CN104162494A (en) * 2014-08-26 2014-11-26 无锡市胜艺粉体机械设备厂 Atomizing disk
CN108355850A (en) * 2018-04-28 2018-08-03 马鞍山马钢华阳设备诊断工程有限公司 A kind of rotary-atomizing wheel

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2352552C2 (en) * 1973-10-19 1982-11-25 Dorst-Keramikmaschinen-Bau Otto Dorst U. Dipl.-Ing. Walter Schlegel, 8113 Kochel Atomizer disc for atomizing highly abrasive slurries
ZA774542B (en) * 1976-08-04 1978-06-28 Atomic Energy Authority Uk Improvements in or relating to the production of fibres
YU119879A (en) * 1978-06-03 1983-01-21 Politechnika Poznanska Rotor to attain streaming of granular material
EP0538378B1 (en) * 1990-07-10 1995-04-05 APV Anhydro A/S (APV Pasilac A/S) Atomizer wheel
US5226605A (en) * 1992-09-30 1993-07-13 Barr & Murphy (Canada) Ltee/Ltd. Rotary atomizer disk with replaceable nozzle inserts and method for replacing inserts
US5271562A (en) * 1993-03-01 1993-12-21 The Babcock & Wilcox Company Dual fluid atomizer exit orifice shield gas supply housing
MXPA03003968A (en) 2000-11-06 2004-05-24 Cabot Corp Modified oxygen reduced valve metal oxides.
US6659375B1 (en) * 2002-02-26 2003-12-09 Rpm Solutions, Inc. Atomizer lid assembly for an atomizer head
CN101626838A (en) * 2006-07-20 2010-01-13 Rpm方案股份有限公司 A kind of wear insert that is used for rotary atomizer
US10344717B2 (en) * 2017-07-31 2019-07-09 Phillips & Temro Industries Inc. Intake air heater assembly having insulated bushing

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2645415A (en) * 1950-03-07 1953-07-14 Laval Separator Co De Centrifugal bowl
US2695748A (en) * 1952-01-22 1954-11-30 Merco Centrifugal Co Centrifuge nozzle construction
US3079069A (en) * 1958-05-16 1963-02-26 Separator Ab Self-opening sludge centrifuge
US3094487A (en) * 1959-10-06 1963-06-18 Quaker Oats Co Process of centrifugal separation
US3108952A (en) * 1961-10-11 1963-10-29 Bergedorfer Eisenwerk A G Centrifuge rotor with discharge nozzles and mixing device
US3228598A (en) * 1961-10-19 1966-01-11 Pennsalt Chemicals Corp Centrifuge discharge means

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2367770A (en) * 1938-12-08 1945-01-23 Drying & Concentrating Company Apparatus for removing moisture from liquid products
GB726559A (en) * 1953-02-13 1955-03-23 Kestner Evaporator And Enginee Improvements in or relating to rotary spraying devices
NL108207C (en) * 1954-12-11 1900-01-01
CH336754A (en) * 1955-12-01 1959-02-28 Buehler Ag Geb Link conveyors for pasta dryers
US2921383A (en) * 1956-05-07 1960-01-19 Huber Corp J M Method and apparatus for spray drying
FR1197053A (en) * 1956-12-26 1959-11-27 Niro Atomizer As Atomizer
US2920830A (en) * 1956-12-26 1960-01-12 Niro Atomizer As Atomizer for the atomization of liquid dispersions in a reaction chamber
US2942998A (en) * 1957-05-27 1960-06-28 Georgia Kaolin Co Method of coating a spray wheel

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2645415A (en) * 1950-03-07 1953-07-14 Laval Separator Co De Centrifugal bowl
US2695748A (en) * 1952-01-22 1954-11-30 Merco Centrifugal Co Centrifuge nozzle construction
US3079069A (en) * 1958-05-16 1963-02-26 Separator Ab Self-opening sludge centrifuge
US3094487A (en) * 1959-10-06 1963-06-18 Quaker Oats Co Process of centrifugal separation
US3108952A (en) * 1961-10-11 1963-10-29 Bergedorfer Eisenwerk A G Centrifuge rotor with discharge nozzles and mixing device
US3228598A (en) * 1961-10-19 1966-01-11 Pennsalt Chemicals Corp Centrifuge discharge means

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3640467A (en) * 1968-11-05 1972-02-08 Niro Atomizer As Atomizer wheel with wear-resistant, sintered bushings
USRE30963E (en) * 1968-11-05 1982-06-08 Aktieselskabet Niro Atomizer Atomizer wheel with wear-resistant, sintered bushings
US3887133A (en) * 1972-12-18 1975-06-03 Niro Atomizer As Atomizer wheel for the atomization of slurries
US4121770A (en) * 1976-01-26 1978-10-24 A/S Niro Atomizer Wear-resistant rotor wheel
EP0014056A1 (en) * 1979-01-19 1980-08-06 A/S Niro Atomizer An atomizer wheel for the atomization of liquids
US4303200A (en) * 1979-01-19 1981-12-01 A/S Niro Atomizer Atomizer wheel for the atomization of liquids
US4527744A (en) * 1982-08-19 1985-07-09 Robert Bosch Gmbh Electromagnetically actuatable valve
US5356075A (en) * 1990-07-10 1994-10-18 Apv Pasilac Anhydro As Atomizer wheel with a divided wear ring
US5294059A (en) * 1992-06-09 1994-03-15 Willan W Craig Device for directing the flow of an atomized slurry
JP2000308838A (en) * 1999-03-24 2000-11-07 Akzo Nobel Nv Atomizer wheel having improved nozzle for rotary atomizer
EP1038586A2 (en) 1999-03-24 2000-09-27 Akzo Nobel N.V. Atomizer wheel with improved nozzle for rotary atomizers
US6631851B1 (en) 1999-03-24 2003-10-14 Akzo Nobel N.V. Atomizer wheel with improved nozzle for rotary atomizers and method of obtaining microspherical solid particles
JP4673954B2 (en) * 1999-03-24 2011-04-20 アルベマーレ ネザーランズ ビー．ブイ． Atomizer wheel with improved nozzle for rotary atomizer
US6457657B1 (en) 2000-09-01 2002-10-01 Niro A/S Atomizer wheel with wear-resistant inserts
JP2007222783A (en) * 2006-02-23 2007-09-06 Mitsubishi Heavy Ind Ltd Spray disk structure of rotary atomizer
US20120048966A1 (en) * 2008-09-09 2012-03-01 John Bulder Rotary Atomizer with Metal Foam Inserts
US20100258654A1 (en) * 2009-04-14 2010-10-14 Spraying Systems Co. Quick disconnect spray nozzle with transversely oriented discharge orifices
CN102527565A (en) * 2011-12-27 2012-07-04 重庆科技学院 Atomizing plate of high speed centrifugal type atomizer
CN102553741A (en) * 2011-12-27 2012-07-11 重庆科技学院 Double-stage atomized high-speed centrifugal atomizing disc
CN102553741B (en) * 2011-12-27 2014-06-04 重庆科技学院 Double-stage atomized high-speed centrifugal atomizing disc
CN104162494A (en) * 2014-08-26 2014-11-26 无锡市胜艺粉体机械设备厂 Atomizing disk
CN108355850A (en) * 2018-04-28 2018-08-03 马鞍山马钢华阳设备诊断工程有限公司 A kind of rotary-atomizing wheel

Also Published As

Publication number Publication date
SE326939B (en) 1970-08-10
BE677839A (en) 1966-08-01
FI48982B (en) 1974-12-02
CH459798A (en) 1968-07-15
NO116365B (en) 1969-03-10
ES324603A1 (en) 1967-03-16
CS181651B2 (en) 1978-03-31
AT263706B (en) 1968-08-12
USRE32064E (en) 1986-01-14
NL150013B (en) 1976-07-15
FR1474280A (en) 1967-03-24
DE1475168B1 (en) 1972-12-21
DK117820B (en) 1970-06-01
NL6603898A (en) 1966-09-27
FI48982C (en) 1975-03-10
GB1136952A (en) 1968-12-18

Similar Documents

Publication Publication Date Title
US3454226A (en) Atomizer wheel for the atomization of suspensions of hard-wearing materials
DE1475168C (en)
US4225092A (en) Annular grinding mill
US3640467A (en) Atomizer wheel with wear-resistant, sintered bushings
CA1244392A (en) Annular gap-type ball mill
JPS62102846A (en) Inflow apparatus for centrifugal separator
EP0766602B1 (en) Centrifugal separator with conical bowl section and axially spaced recesses
AU616329B2 (en) Atomizer wheel with bushings of different inwardly protruding lengths
JPH02503066A (en) Method and apparatus for forming droplets
US2920830A (en) Atomizer for the atomization of liquid dispersions in a reaction chamber
USRE29083E (en) Atomizer wheel for the atomization of suspensions of hard-wearing materials
US4684065A (en) Atomizer wheel with steel bushings
US3887133A (en) Atomizer wheel for the atomization of slurries
JP4673954B2 (en) Atomizer wheel with improved nozzle for rotary atomizer
CA2354460C (en) Atomizer wheel with wear-resistant inserts
US4323190A (en) Centrifuge bowl end attachment flanges
EP0587185A2 (en) Continuous dispersing apparatus
JPH01168392A (en) Turbo air separator
JP2969555B2 (en) Centrifugal classifier
JP6884942B2 (en) Media stirring type crusher
CA2693957A1 (en) Wear insert for use in a rotary atomizer
US3296746A (en) Particle throwing apparatus
US988486A (en) Pneumatic separator.
USRE14331E (en) Centrifugal separator
US2247391A (en) Abrading apparatus

Legal Events

Date Code Title Description
RF Reissue application filed

Effective date: 19820830