US3768174A - Fluidised bed device - Google Patents

Fluidised bed device Download PDF

Info

Publication number
US3768174A
US3768174A US00245466A US3768174DA US3768174A US 3768174 A US3768174 A US 3768174A US 00245466 A US00245466 A US 00245466A US 3768174D A US3768174D A US 3768174DA US 3768174 A US3768174 A US 3768174A
Authority
US
United States
Prior art keywords
assembly
vibration
spring means
springs
fluidised bed
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
US00245466A
Other languages
English (en)
Inventor
J Biaggi
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.)
Sulzer Escher Wyss AG
Original Assignee
Escher Wyss AG
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 Escher Wyss AG filed Critical Escher Wyss AG
Application granted granted Critical
Publication of US3768174A publication Critical patent/US3768174A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
    • F28C3/00—Other direct-contact heat-exchange apparatus
    • F28C3/10—Other direct-contact heat-exchange apparatus one heat-exchange medium at least being a fluent solid, e.g. a particulate material
    • F28C3/12—Other direct-contact heat-exchange apparatus one heat-exchange medium at least being a fluent solid, e.g. a particulate material the heat-exchange medium being a particulate material and a gas, vapour, or liquid
    • F28C3/16—Other direct-contact heat-exchange apparatus one heat-exchange medium at least being a fluent solid, e.g. a particulate material the heat-exchange medium being a particulate material and a gas, vapour, or liquid the particulate material forming a bed, e.g. fluidised, on vibratory sieves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B3/00—Methods or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G27/00—Jigging conveyors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
    • F26B3/06—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
    • F26B3/08—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed
    • F26B3/092—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed agitating the fluidised bed, e.g. by vibrating or pulsating
    • F26B3/0923—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed agitating the fluidised bed, e.g. by vibrating or pulsating by mechanical means, e.g. vibrated plate, stirrer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2812/00—Indexing codes relating to the kind or type of conveyors
    • B65G2812/03—Vibrating conveyors
    • B65G2812/0348—Supporting or guiding means for troughs
    • B65G2812/0364—Springs

Definitions

  • Fluidised bed device for draing and/or cooling fine granular products, having a perforated bed and a chest for supplying air into said bed; the assembly of said bed and said chest supported by springs on a stationary frame; a vibrator causing vibration of said assembly; one of said springs being a helical spring arranged perpendicular to the centre of gravity of said assembly and bearing the weight of said assembly; the other of said springs being plate springs arranged remote from said helical spring and guiding said assembly relatively to said frame.
  • the invention relates to fluidised bed devices used for drying and/or cooling fine granular products, for example powders, grains or crystals.
  • Said fluidised bed devices comprise a bed of elongated form, traversed throughout its lenght by the product which is to be dried and/or cooled. Beneath the perforated bottom of the bed there is provided an air supply chest. Furthermore, the assembly formed by the bed and the air supply chest is subjected to unidirectional vibrations, which are transmittedto it by one or more vibrators.
  • the vibrated assembly is connected to a stationary frame by means of a series of inclined plate springs distributed throughout its length.
  • These plate springs thus serve a double purpose, since firstly they support the weight of the vibrated assembly and secondly they ensure the guiding of the assembly while it is vibrating.
  • This solution presents some disadvantages, just because these plate springs have to serve a double function. In effect, under the action of the weight of the supported assembly, the plate springs become deformed. Under this condition, they provide an imperfect guiding of the vibrated assembly when the latter is not perfectly balanced.
  • helical springs are provided as support or suspension between the vibrating assembly and the stationary frame.
  • the assembly is not satisfactorily guided by these springs, since the springs change their length with an alteration in the weight of the chamber and under the influence of the vibratory forces.
  • the vibrators are arranged at the end of the bed. Consequently, strong forces are necessary for guiding the assembly relatively to the stationary frame. Furthermore, the assembly has to be reinforced in the region where the vibrators are fixed to it.
  • plate springs, or other springs being elastic in the direction of vibration but fast in the direction perpendicularto the direction of vibration, which plate springs or springs are'disposed on the assembly for connecting it tothe stationary frame, so as to ensure the stability of the vibrated assembly and the guiding thereof while it is vibrating.
  • the vibrator or vibrators adapted to excite the vibrated assembly are carried by the stationary frame, and these vibrators act on the said assembly by means of thrust rods or tubes which only transmit the effective component of the vibration and of which the ends are attached to the assembly close to its centre of gravity.
  • FIGURE is a diagrammatic side elevation of a fluidised bed device.
  • the shown fluidised bed device comprises a bed I designed to be traversed throughout its length by the product which is to be dried and/or cooled. At its one end, this bed 1 is provided with a funnel 2 for the introduction of the product, while it has at its other end an orifice 3 for the outlet of the product after it has been dried and/or cooled.
  • the bottom-of the bed 1 is formed by a horizontal sheet metal bottom plate 4 having a large number of fine perforations.
  • a chest 5 of the general form of a rectangular parallelepiped, which extends throughout the length of the bed 1.
  • the purpose of the chest 5 is to supply the bed with air which passes through the perforations in the bottom plate 4 and dries and/or cools the product.
  • the air also ensures fluidisation of the product which is disposed above the bottom plate 4 and which travels from the funnel 2 to the outlet orifice 3.
  • the chest 5 carries a union 6 connected to an air supply pipe 7.
  • the other end of the chest 5 is completely closed off, so that the air escapes into. the interior ofthe bed 1.
  • This latter comprises a hood for the evacuation of the air and,.for this purpose, it has at its upper end two outlet chimneys 8.
  • the assembly formed by the bed 1 and the chest 5 is adapted to be excited with vibratory movements.
  • this assembly 1, 5 rests perpendicularly of its centre of gravity G on helical springs 9.
  • These springs 9, one of which is seen, are arranged one behind the other in a direction perpendicular to the drawing, and are supported on blocks 10 integral with a stationary frame 11 of the device.
  • the helical springs 9 may possibly be replaced by rubber blocks or other members capable of elastically supporting the weight of the vibrated assembly 1, 5, while. permitting the latter to perform the vibratory movements.
  • the assembly 1, 5 is connected to the stationary frame 11 by groups of plate springs 12a or 12b respectively.
  • these plate springs are respectively embedded in a support fixed to the frame 11 and in another support fixed to the vibrated assembly.
  • the only purpose of these two groups of plate springs 12a and 12b is to ensure the stability of the vibrated assembly 1, 5 and also the guiding thereof. However, they are not called upon to bear the weight of the assembly 1, 5, because this function is allotted to the helical springs 9 provided perpendicularly of the centre of gravity G.
  • the vibrating of the assembly 1, is assured by vibrators 13 comprising unbalanced shafts turning in opposite directions so as to provide unidirectional vibrations.
  • these vibrators 13 are not fixed on the vibrated assembly 1, 5. They are supported by the stationary frame 11, their casing bearing on this frame 11 by means of helical springs 14 or any other suitable resilient members. Thereby the vibrators 13 are arranged at the one end of the frame 11.
  • the transmission of the vibration forces is assured by a number of thrust tubular rods 15, of which the ends are attached to the vibrated assembly 1, 5 in the region of the centre of gravity G of the latter.
  • One of the rods 15 is seen, the other ones lie behind it, arranged in a plane perpendicular to the drawing.
  • the rods are slender, that is their axes are easily bent, and they are inclined and extend through the chest 5 by means of passages formed in the latter, the sealing action for each rod being assured by means of a stuffing box of conventional type.
  • the speed of advance of the product can be modified during operation so as to adapt the device at any moment to the rate of flow or the quality of the product which it is receiving.
  • a fluidised bed device for drying and/or cooling fine granular products comprising a. a stationary frame;
  • an assembly including a bed for transporting said products which is provided with a perforated bottom, and an air chest located below said bottom;
  • first spring means located in a vertical plane containing the center of gravity of the assembly and serving to support the assembly on the frame, the spring means being elastic in the vertical direction and being yieldable in the direction of vibration;
  • second spring means spaced from the first spring means in the direction of vibration and reacting between the frame and the assembly to guide the latter during vibratory motion, the second spring means being elastic in the direction of vibration and rigid in a direction normal thereto.
  • a fluidised bed device as defined in claim 1 in which the vibrator is coupled to the assembly by forceimparting means connected to the assembly in the region of its center of gravity.
  • a fluidised bed device as defined in claim 3 in which a. the vibrator comprises at least one vibrationgenerating unit mounted on the frame; and
  • the force-imparting means comprises a thrust rod connected at one end to the assembly in the region of its center of gravity and coupled at its opposite end to said generating unit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Drying Of Solid Materials (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
US00245466A 1971-04-19 1972-04-19 Fluidised bed device Expired - Lifetime US3768174A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7113669A FR2134719A5 (zh) 1971-04-19 1971-04-19

Publications (1)

Publication Number Publication Date
US3768174A true US3768174A (en) 1973-10-30

Family

ID=9075453

Family Applications (1)

Application Number Title Priority Date Filing Date
US00245466A Expired - Lifetime US3768174A (en) 1971-04-19 1972-04-19 Fluidised bed device

Country Status (8)

Country Link
US (1) US3768174A (zh)
JP (1) JPS5626462B1 (zh)
CA (1) CA992741A (zh)
CH (1) CH543718A (zh)
DE (2) DE2218034B2 (zh)
FR (1) FR2134719A5 (zh)
GB (1) GB1382462A (zh)
NL (1) NL7205236A (zh)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3900958A (en) * 1972-09-30 1975-08-26 Kloeckner Humboldt Deutz Ag Method and apparatus for continuously drying a dripping wet, granular or lumpy material
US4062202A (en) * 1974-09-05 1977-12-13 Cloudy & Britton Inc. Vibratory weir assembly and method for separating foods being frozen during fluidization in a food freezing tunnel
US4305210A (en) * 1976-12-01 1981-12-15 A/S Niro Atomizer Apparatus for processing a powdered or particulate product
US4387514A (en) * 1981-04-06 1983-06-14 Dresser Industries, Inc. Method for drying oil well drill cuttings
DE3345235A1 (de) * 1983-12-14 1985-06-20 Sulzer-Escher Wyss GmbH, 7980 Ravensburg Fliessbett mit einer waermetauscher-anordnung
US4670993A (en) * 1984-08-16 1987-06-09 E.C.C. America Inc. Method for fluidizing fine kaolin particles
GB2332186A (en) * 1997-12-13 1999-06-16 Eastman Kodak Co Particle conveyor
CN100529632C (zh) * 2007-07-31 2009-08-19 河南金谷干燥工程技术有限公司 颗粒物料振动冷却机

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3204690C2 (de) * 1982-02-11 1983-12-08 Glatt GmbH, 7851 Binzen Trocknungsvorrichtung für pulveriges oder körniges pharmazeutisches Gut
DE3337770A1 (de) * 1982-11-04 1984-05-10 A. Heinen GmbH Maschinenfabrik, 2930 Varel Wirbelschichttrockner
CN103868336A (zh) * 2014-03-22 2014-06-18 昆山华德尔复合肥有限公司 复合肥干燥机
CN105415741B (zh) * 2015-11-24 2018-05-29 东阳市天齐科技有限公司 生物质颗粒成品除热装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2094786A (en) * 1935-06-18 1937-10-05 Traylor Vibrator Co Vibratory drying conveyer
US2985279A (en) * 1957-07-03 1961-05-23 Jr Warren C Burgess High energy level unidirectional vibratory drive system
US3003667A (en) * 1956-10-24 1961-10-10 Nils Fredrik Rudebeck Device for the discharge of grain or similar small-sized material
US3022988A (en) * 1958-07-22 1962-02-27 Corson G & W H Material treating device
US3161483A (en) * 1960-02-15 1964-12-15 Rex Chainbelt Inc Vibrating fluidized systems

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2094786A (en) * 1935-06-18 1937-10-05 Traylor Vibrator Co Vibratory drying conveyer
US3003667A (en) * 1956-10-24 1961-10-10 Nils Fredrik Rudebeck Device for the discharge of grain or similar small-sized material
US2985279A (en) * 1957-07-03 1961-05-23 Jr Warren C Burgess High energy level unidirectional vibratory drive system
US3022988A (en) * 1958-07-22 1962-02-27 Corson G & W H Material treating device
US3161483A (en) * 1960-02-15 1964-12-15 Rex Chainbelt Inc Vibrating fluidized systems

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3900958A (en) * 1972-09-30 1975-08-26 Kloeckner Humboldt Deutz Ag Method and apparatus for continuously drying a dripping wet, granular or lumpy material
US4062202A (en) * 1974-09-05 1977-12-13 Cloudy & Britton Inc. Vibratory weir assembly and method for separating foods being frozen during fluidization in a food freezing tunnel
US4305210A (en) * 1976-12-01 1981-12-15 A/S Niro Atomizer Apparatus for processing a powdered or particulate product
US4387514A (en) * 1981-04-06 1983-06-14 Dresser Industries, Inc. Method for drying oil well drill cuttings
DE3345235A1 (de) * 1983-12-14 1985-06-20 Sulzer-Escher Wyss GmbH, 7980 Ravensburg Fliessbett mit einer waermetauscher-anordnung
US4670993A (en) * 1984-08-16 1987-06-09 E.C.C. America Inc. Method for fluidizing fine kaolin particles
GB2332186A (en) * 1997-12-13 1999-06-16 Eastman Kodak Co Particle conveyor
CN100529632C (zh) * 2007-07-31 2009-08-19 河南金谷干燥工程技术有限公司 颗粒物料振动冷却机

Also Published As

Publication number Publication date
JPS5626462B1 (zh) 1981-06-18
FR2134719A5 (zh) 1972-12-08
DE2218034B2 (de) 1975-01-09
CH543718A (de) 1973-10-31
CA992741A (en) 1976-07-13
DE2218034A1 (de) 1972-11-09
GB1382462A (en) 1975-01-29
NL7205236A (zh) 1972-10-23
DE7214023U (de) 1977-06-23

Similar Documents

Publication Publication Date Title
US3768174A (en) Fluidised bed device
US3954604A (en) Sifting machine
US3389881A (en) Resilient supports for rotating machine parts
ES438224A1 (es) Perfeccionamientos en molinos oscilantes para triturar mate-rial a moler.
US2819046A (en) Vibration absorbing apparatus
US4119692A (en) Process and apparatus for manufacturing carbon electrodes
US2171115A (en) Grinding device
US3225926A (en) Vibrating sieves
US2967434A (en) Oscillating system excited at or in the neighbourhood of resonance
CN206661665U (zh) 一种建筑用筛沙装置
SU847900A3 (ru) Устройство дл сортировки частицзЕРНиСТОгО МАТЕРиАлА
GB1451574A (en) Oscillatory washing machine
US2280238A (en) Combined mill and separator
US3749142A (en) Bag settler for bag filling machines
US2839193A (en) Resonant oscillating device
US2134091A (en) Apparatus for the solidifying or casting of molten materials
GB1136395A (en) Air or gas fluidised-bed drier or cooler for granular materials
SU567924A1 (ru) Вибрационна сушилка дл дисперсных материалов
US2794267A (en) Apparatus for treating solid products in bulk
US3270883A (en) Shaking machine with u-shaped countermass members
ES364087A1 (es) Perfeccionamientos introducidos en las instalaciones con mesa vibratoria.
RU2036774C1 (ru) Вибрационное устройство для обработки мелких деталей
US2980254A (en) Resonant oscillatory screening device
CN206824141U (zh) 高频振动筛
SU447896A1 (ru) Аппарат дл псевдоожижени