EP0045292B1 - Druckmittelbetätigter Schwingungserzeuger - Google Patents

Druckmittelbetätigter Schwingungserzeuger Download PDF

Info

Publication number
EP0045292B1
EP0045292B1 EP19810850128 EP81850128A EP0045292B1 EP 0045292 B1 EP0045292 B1 EP 0045292B1 EP 19810850128 EP19810850128 EP 19810850128 EP 81850128 A EP81850128 A EP 81850128A EP 0045292 B1 EP0045292 B1 EP 0045292B1
Authority
EP
European Patent Office
Prior art keywords
passage
inlet
nozzle
housing
outlet
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
Application number
EP19810850128
Other languages
English (en)
French (fr)
Other versions
EP0045292A3 (en
EP0045292A2 (de
Inventor
Charles E. Blakeslee
Ingemar Alsenfelt
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.)
KOCKUMATION AB
Original Assignee
KOCKUMATION AB
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 KOCKUMATION AB filed Critical KOCKUMATION AB
Publication of EP0045292A2 publication Critical patent/EP0045292A2/de
Publication of EP0045292A3 publication Critical patent/EP0045292A3/en
Application granted granted Critical
Publication of EP0045292B1 publication Critical patent/EP0045292B1/de
Expired legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/54—Large containers characterised by means facilitating filling or emptying
    • B65D88/64—Large containers characterised by means facilitating filling or emptying preventing bridge formation
    • B65D88/66—Large containers characterised by means facilitating filling or emptying preventing bridge formation using vibrating or knocking devices
    • B65D88/665—Large containers characterised by means facilitating filling or emptying preventing bridge formation using vibrating or knocking devices using a resonator, e.g. supersonic generator
    • 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
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/18—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency wherein the vibrator is actuated by pressure fluid

Definitions

  • the present invention relates to a fluid operated pressure oscillation generator of the type comprising a housing forming an outlet passage and an inlet compartment surrounding the outlet passage, an annular seat formed by the housing between the outlet passage and the inlet compartment, a diaphragm and a cover detachably mounted to the housing and engaging the diaphragm at the periphery thereof to bias the diaphragm against the seat, said diaphragm forming together with the seat a valve to control a connection for operating fluid between the inlet compartment and the outlet passage.
  • the outlet passage joins a resonator, such as a resonator horn.
  • Pressure oscillation generators of this kind are used for cleaning spaces in furnaces and process apparatus as well as other similar spaces through which gases are flown such as hot flue gases from combustion processes and exhaust and waste gases from chemical processes with dust and other fine particulate material entrained therein, which tends to deposit on the surfaces of the space passed by the gas and to form a coating on such surfaces.
  • the coating forms an insulation layer on the heat exchange surfaces of the furnace or apparatus and therefore should be removed continuously or intermittently in order to maintain a high heat exchange efficiency.
  • This type of cleaning is often called "sonic cleaning".
  • the coatings which may be hard and compact and may firmly adhere to the surfaces are actuated mechanically by the air propagated pressure oscillations transmitted from the pressure oscillation generator so as to be loosened from the surfaces and fall down to the bottom of the space to be cleaned.
  • the oscillations involved may have a frequency in the audible frequency range or in the infrasonic frequency range (below about 20 cps).
  • pressure oscillation generators of the type referred to When pressure oscillation generators of the type referred to are used for sonic cleaning in the manner described they are mounted in a wall of the space to be cleaned with the resonator opening into the space to transmit the pressure oscillations thereinto, while the diaphragm housing is located on the outside of the wall. Since the generator is subject to normal wear and also may be exposed to abnormal temperature conditions due to heat radiation from the space to be cleaned, it must be serviced from time to time for maintenance and repair including replacement of wearing parts usually the diaphragm which is the most easily damaged element of the generator.
  • the primary object of the invention is to provide a fluid operated pressure oscillation generator of the type referred to wherein such back flow through the diaphragm housing is effectively prevented by providing a continuous flow of gas such as air, or other fluid through the passage inside the seat and through the resonator connected thereto, said flow being directed into the space to be cleaned, when the cover and the diaphragm are removed from the diaphragm housing, so as to hold back or impede the gas pressing from the interior of said space without interference with the service work to be done. More particularly the seat will be fully exposed and available for servicing during the supply of the fluid.
  • the invention provides a fluid operated pressure oscillation generator of the type referred to above, which has obtained the characteristics defined in claim 1.
  • the fluid operated pressure osillation generator disclosed in Fig. 1 comprises a diaphragm housing 10 which forms an annular seat 11.
  • a diaphragm 12 is biased against the seat by means of a cover 13 mounted to the housing by means of screws or bolts 14, a circumferential rib 15 on the inner side of the cover engaging the diaphragm at the periphery thereof.
  • Inside the seat 11 the housing 10 forms a central passage 16, and the passage 17 of a resonator horn 18 connected to the housing by screws 19 forms an extension of the central passage 16.
  • An annular inlet compartment 20 surrounding the seat is provided with a tube connection 21 for the supply of pressurized gas such as air to the inlet compartment.
  • the diaphragm 12 When pressurized gas is supplied to the inlet compartment 20 the diaphragm 12 in cooperation with the seat 11 controls the gas flow from the inlet compartment 20 to the central passage 16 in the housing 10 and thus to the passage 17 of the resonator horn 18 for the generation of air propagated pressure oscillations transmitted from the opening of the resonator horn 18, in a manner which is well known in the art.
  • the diaphragm housing 10 forms a further annular compartment 22 between the passage 16 and the inlet compartment 20 a partition wall 23 being connected to the housing as by welding between compartments 16 and 22.
  • a tube connection 24 is provided for the supply of pressurized air to the inner compartment 22, and this compartment has a number of outlet bores 25 opening into the passage 16. These bores converge towards a common point on the axis of the passage 16 and are directed towards the outlet end thereof, which is connected to the resonator horn.
  • the bores 25 each include an angle of the order of 25° with the axis of the passage, and they are equally spaced around the passage. The number thereof is four but any other suitable number of bores may be provided.
  • the housing must be of a specific construction including the partition wall 23, and the arrangement of such wall makes the manufacture of the housing more complicated.
  • a specifically constructed housing must be included in a fluid operated pressure oscillation generator which is to be used for sonic cleaning under the conditions described.
  • Figs. 2 to 4 disclose an embodiment including a standard diaphragm housing which has been modified in a simple manner for the purpose of the invention.
  • a tube 26 extends from the outside of the diaphragm housing 10 through the inlet compartment 20, the opposite open ends of the tube communicating with the surroundings and the passage 16, respectively.
  • the tube 26 is fixedly connected to the housing as by welding and the inner end thereof is flush with the bounding surface of the passage 16.
  • a tubular nozzle 27, Figs. 2 to 4 is inserted into the tube 26 and has a slide fit therein.
  • the nozzle shown separately in Fig. 4, has a bend 28 at the outer end thereof for connection to a source of pressurized gas such as air, or other fluid and a guide flange 29 is fixedly connected to the nozzle.
  • the closed inner end of the nozzle abuts the inside wall of the passage 16, and the portion of the nozzle extending across the passage 16 is formed with outlet bores 30, which are directed axially of the passage 16 into the passage 17 of the resonator horn 18, and outlet bores 30a which form an angle with the axis of said bore and are also directed into the passage 17 of the resonator horn.
  • An edge 31 on the guide flange 29 cooperates with a surface 32 on the diaphragm housing in order to accurately define the rotational position of the nozzle when it is inserted into the tube 26 so that the bores 30 and. 30a will be directed as described.
  • a standard diaphragm housing can easily be modified by arranging the tube 26 therein for the purpose of the invention. Since the nozzle is a separate part it can be used for servicing several generators.
  • FIG. 6 and 7 A more eleborate embodiment of the invention is shown in Figs. 6 and 7 and can be considered as a further development of the embodiment of Figs. 2 to 5.
  • the nozzle 27 comprising two tubes connected together in axial alignment, has a slide fit in a guide bore 37 in the diaphragm housing 10 between the inlet compartment 20 and the passage 16.
  • the outer end of the nozzle is closed by a plug 38, Fig. 6, and at the inner end which is also closed, bores 30 and 30a are arranged as described with reference to the embodiment of Figs. 2 to 5.
  • the nozzle extends through an inlet passage 39 communicating with the tube inlet 21 opening in the side wall of said passage.
  • One end of the passage 39 opens into the inlet compartment 20 through an opening 40, and at the other end a male connector 41 is screwed into the passage.
  • the nozzle extends through this male connector 41, and a screw gland 42 is mounted at the outer end of the connector, a packing material 43 being arranged therein.
  • a cross pin 44 mounted in the housing 10 extends through opposite elongated axial slots 45 in the nozzle in order to define the rotational position of the nozzle so that the bores 30 and 30a are maintained in the desired position.
  • a valve head 46 is fixedly connected to the nozzle and is slidable in the passage 39. In the position shown in Fig. 6 the valve head 46 engages a seat 47 formed in the passage 39 at the opening 40 in order to close the passage to the inlet compartment 20.
  • pressurized gas such as air can be supplied to the inlet passage 39 from the tube inlet 21 and will pass through the slots 45 into the nozzle 27 to be discharged in the passage 16 through the bores 30 and 30a.
  • No gas can pass through the passage 39 into the inlet compartment 20 because the communication between said passage and the inlet compartment 20 is interrupted by the valve head 46 engaging the seat 47.
  • the valve head will be biased against the seat by the pressure of the gas supplied to the inlet passage.
  • the position of the nozzle shown in Fig. 6 accordingly is that used for producing the gas curtain in the passage 16 when it is desired to remove the cover and the diaphragm (not shown in Figs. 6 and 7) as described above.
  • the nozzle 27 In the operative condition of the pressure oscillation generator the nozzle 27 is withdrawn to the position shown in Fig. 7 in which the inlet passage 39 communicates with the inlet compartment and the generator can be operated in the conventional way.
  • the slots 45 are displaced from the inlet passage and are received in the connector 41 so that no gas can pass into the nozzle through said slots.
  • the inner end of the nozzle closes the guide bore 37, so that no gas can pass into the passage 16 through the guide bore. Gas passing from the inlet compartment 20 into the nozzle through the bores 30 and 30a has no way out of the nozzle.
  • the gland 42 can be tightened in order to lock the nozzle in either position thereof, if necessary.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Control Of Fluid Pressure (AREA)
  • Fluid-Pressure Circuits (AREA)

Claims (5)

1. Druckmittelbetätigter Schwingungserzeuger mit einem Gehäuse (10), das einen Auslaßkanal (16) und eine Einlaßkammer (20) bildet, welche den Auslaßkanal umgibt, mit einer ringförmigen Auflagefläche (11), die von dem Gehäuse zwischen dem Auslaßkanal und der Einlaßkammer gebildet ist, mit einer Membran (12) und einem Deckel (13), der lösbar am Gehäuse angebracht ist und sich mit der Membran an deren Umfang in Eingriff befindet, um die Membran gegen die Auslagefläche vorzuspannen, wobei die genannte Membran zusammen mit der Auflagefläche ein Ventil bildet, um eine Verbindung für das Druckmittel zwischen der Einlaßkammer und dem Auslaßkanal zu steuern, gekennzeichnet durch wenigstens einen Auslaß (25, 30, 30a) für das Druckmittel, der in den Auslaßkanal (16) mündet und von der Membran (12) abgewandt ist, sowie Mittel (24; 27) zur Zufuhr des Druckmittels von außerhalb des Gehäuses (10) zum genannten Auslaß.
2. Druckmittelbetätigter Schwingungserzeuger nach Anspruch 1, dadurch gekennzeichnet, daß das Gehäuse (10) zwischen der genannten Einlaßkammer (20) und dem genannten Auslaßkanal (16) eine Kammer (22) für die Zufuhr von gasförmigem Druckmittel bildet, wobei sich der genannte Auslaß (25) zwischen der Zufuhrkammer und dem Auslaßkanal erstreckt, und daß die genannten Mittel (24) für die Zufuhr von Druckmitteln zum Auslaß mit der Zufuhrkammer verbunden sind.
3. Druckmittelbetätigter Schwingungserzeuger nach Anspruch 1, dadurch gekennzeichnet, daß die genannten Mittel für die Zufuhr von Druckmittel zum Auslaß (30, 30a) eine Düse (27) aufweist sowie Mittel (26; 37, 39, 46), welche die genannte Düse durch das Gehäuse (10) axialverschieblich befestigen, wobei ein Ende außerhalb des Gehäuses liegt, und wobei der genannte Auslaß (30, 30a) in einem Teil der Düse neben dem genannten anderen Ende der Düse so angeordnet ist, daß er durch Verschieben der Düse zwischen einer Position innerhalb bzw. außerhalb des Auslaßkanales (16) einstellbar ist.
4. Druckmittelbetätigter Schwingungserzeuger nach Anspruch 3, gekennzeichnet durch ein Führungsrohr (26) im Gehäuse (10), das sich zwischen der Außenseite des Gehäuses und dem Auslaßkanal (16) in Querrichtung zum Auslaßkanal erstreckt, wobei die Düse (27) durch das genannte Führungsrohr verschiebbar ist.
5. Druckmittelbetätigter Schwingungserzeuger nach Anspruch 3, gekennzeichnet durch einen Einlaßkanal (39) für ein gasförmiges Druckmittel, der mit der Einlaßkammer (20) verbunden ist, einen Ventilsitz (47), der in dem Einlaßkanal zwischen dem Einlaßkanal und der Einlaßkammer gebildet ist, wobei sich die genannte Düse (27) durch den Einlaßkanal und die Einlaßkammer von außerhalb des Gehäuses (10) in den Auslaßkanal (16) erstreckt, eine Einlaßöffnung (45), die in der Düse gebildet ist, und ein Ventilkörper (46) auf der Düse, welcher mit dem Ventilsitz zusammenwirkt, wobei die Düse verschiebbar ist zwischen einer Stellung, in der die Einlaßoffnung mit dem Einlaßkanal zusammenwirkt und die Verbindung zwischen dem Einlaßkanal und der Einlaßkammer durch den Ventilkörper, der sich mit dem Ventilsitz in Eingriff befindet, unterbrochen wird, sowie einer anderen Stellung, in der die genannte Verbindung offen ist und die Einlaßoffnung vom Einlaßkanal abgezogen ist.
EP19810850128 1980-07-25 1981-07-23 Druckmittelbetätigter Schwingungserzeuger Expired EP0045292B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US17222180A 1980-07-25 1980-07-25
US172221 1980-07-25

Publications (3)

Publication Number Publication Date
EP0045292A2 EP0045292A2 (de) 1982-02-03
EP0045292A3 EP0045292A3 (en) 1982-02-10
EP0045292B1 true EP0045292B1 (de) 1984-05-30

Family

ID=22626810

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810850128 Expired EP0045292B1 (de) 1980-07-25 1981-07-23 Druckmittelbetätigter Schwingungserzeuger

Country Status (4)

Country Link
EP (1) EP0045292B1 (de)
JP (1) JPH0249792B2 (de)
CA (1) CA1178708A (de)
DE (1) DE3163878D1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE451115B (sv) * 1985-01-16 1987-09-07 Ulveco Kockum Sonic Ab Anleggning for sotning av pannor eller liknande, innefattande ett flertal lagfrekvent ljud alstrande anordningar
US4642833A (en) * 1985-03-14 1987-02-17 Coxwold (Proprietary) Limited Valve assembly
FI972252A (fi) * 1997-05-28 1998-11-29 Ulf Krogars Menetelmä ja laitteisto akustiseen puhdistukseen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2804042A (en) * 1954-03-02 1957-08-27 Centre Nat Rech Scient Apparatus for producing high-powered sounds and ultra-sounds
CH376747A (de) * 1960-01-05 1964-04-15 Lennart Schoeberg Boerje Mundstück für Spanblaspistolen
SE445788B (sv) * 1979-06-11 1986-07-14 Kockumation Ab Sett och anordning vid en gasdriven trycksvengningsalstrare av membranventiltyp

Also Published As

Publication number Publication date
EP0045292A3 (en) 1982-02-10
JPH0249792B2 (ja) 1990-10-31
JPS57122974A (en) 1982-07-31
DE3163878D1 (en) 1984-07-05
CA1178708A (en) 1984-11-27
EP0045292A2 (de) 1982-02-03

Similar Documents

Publication Publication Date Title
US4624220A (en) Infrasound generator
US4981088A (en) Slag eliminator for furnace viewing system
EP1708820B1 (de) Mechanisch abgedichtete, einstellbare gasdüse
CA1323257C (en) Water heater construction
UA27963C2 (uk) Спосіб лазерної обробки робочої заготовки та пристрій для його здійснення
KR102014715B1 (ko) 어쿠스틱 수트 블로워
EP0045292B1 (de) Druckmittelbetätigter Schwingungserzeuger
SU1291031A3 (ru) Перемещаемое устройство дл сдувани сажи
US4969937A (en) Vertically tiered particle filtering apparatus
US4480658A (en) Aspirator system for sound emitters
US4333742A (en) Soot blower using fuel gas as blowing medium
US5313914A (en) Potable hot water storage vessel and direct-fired heat exchanger
CN214392800U (zh) 一种激光焊接机镜头保护装置
US4623310A (en) Vaporized liquid fuel combustion apparatus
US4201046A (en) Burner nozzle assembly for gas turbine engine
US6588049B2 (en) Cleaning installation and device for removing soot or similar deposits
WO1999018395A1 (en) Alternative vertical or horizontal gas vent
US5088551A (en) Heat exchanger for cooling hot reacting gas
US7717703B2 (en) Combustion head for use with a flame spray apparatus
WO1980002887A1 (en) An improvement in gas-operated pressure oscillation generators of the diaphragm valve type
US2622549A (en) Closure means for chamber wall opening with fluid pressure gas escape prevention means
US4418049A (en) Changing oil tubes in a carbon black reactor
US4500491A (en) Changing oil tubes in a carbon black reactor
GB2155821A (en) Gas cleaning apparatus
EP1319159A1 (de) Brennerdüse

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): CH DE FR GB SE

AK Designated contracting states

Designated state(s): CH DE FR GB SE

17P Request for examination filed

Effective date: 19820810

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): CH DE FR GB LI SE

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19840630

Year of fee payment: 4

REF Corresponds to:

Ref document number: 3163878

Country of ref document: DE

Date of ref document: 19840705

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19840718

Year of fee payment: 4

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19840806

Year of fee payment: 4

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19840821

Year of fee payment: 4

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19850731

Ref country code: CH

Effective date: 19850731

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19860724

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19870331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19870401

GBPC Gb: european patent ceased through non-payment of renewal fee
REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19881118

EUG Se: european patent has lapsed

Ref document number: 81850128.0

Effective date: 19870609