EP0423572A1 - Dispositif pour la production d'une onde de pression - Google Patents

Dispositif pour la production d'une onde de pression Download PDF

Info

Publication number
EP0423572A1
EP0423572A1 EP90119210A EP90119210A EP0423572A1 EP 0423572 A1 EP0423572 A1 EP 0423572A1 EP 90119210 A EP90119210 A EP 90119210A EP 90119210 A EP90119210 A EP 90119210A EP 0423572 A1 EP0423572 A1 EP 0423572A1
Authority
EP
European Patent Office
Prior art keywords
valve disc
tube
pressure chamber
pressure
valve
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.)
Granted
Application number
EP90119210A
Other languages
German (de)
English (en)
Other versions
EP0423572B1 (fr
Inventor
Hans-Otto Schwarze
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.)
HOSCH-COMPANY
Original Assignee
HOSCH-COMPANY
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 HOSCH-COMPANY filed Critical HOSCH-COMPANY
Publication of EP0423572A1 publication Critical patent/EP0423572A1/fr
Application granted granted Critical
Publication of EP0423572B1 publication Critical patent/EP0423572B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65D88/70—Large containers characterised by means facilitating filling or emptying preventing bridge formation using fluid jets
    • B65D88/706—Aerating means, e.g. one-way check valves

Definitions

  • the invention relates to a device for the intermittent generation of a pressure wave in silos or other containers, in which a tube for releasing the pressure waves, a storage housing surrounding the tube for the accumulation of compressed air and a flat sealing element are present, which in the charged idle state at the inner end of the Pipe is present, on the side facing away from the tube a pressure chamber, on one side with the internal pressure of the pressure chamber and on the other side outside the tube with the pressure of the accumulator housing and in the event of tripping by venting the pressure chamber to establish a connection between the accumulator housing and the pipe lifts up from the pipe end, the storage housing being fillable via a passage which encloses the pressure chamber.
  • a device of this type in which a valve plate can be moved within a nozzle, which alternately seals the tube for releasing the pressure waves or the outlet of the pressure chamber.
  • There is a separate channel for filling the storage housing which is operated using a separate valve.
  • such a device is known from the French company Ermap, in which, instead of the disk sealingly guided in a pipe socket, a membrane is clamped above the valve-side pipe end, which closes off the pressure chamber.
  • the membrane has a calibrated bore outside the surface of the pipe for releasing the pressure waves. Filling takes place via the pressure chamber using the same opening through which the pressure chamber is also vented.
  • the flat sealing element is a non-clamped valve disc, the edge of which is elastic enough on the one hand to let the compressed air from the pressure chamber into the storage housing during filling, and on the other hand is stiff enough to hold the valve disc at least roughly center it.
  • a piston seal is presented on a device of the same type, which is designed to be air-permeable in one direction, but is sealing in the other direction.
  • This requires the use of simple sealing sleeves, which are inherently due to their U-shaped cross-section and without exception have shaft.
  • the valve disc is designed in coordination with the pressure chamber, in such a way that, when it is filled, it lets the compressed air let into the pressure chamber enter the storage housing without any significant resistance, but on the other hand seals it so well against the pressure chamber that it seals in the case of venting the pressure chamber after a filling process, the inner opening of the tube for releasing the pressure waves is safely released.
  • valve disc an extremely soft material quality can be selected for the outer edge of the valve disc, which may well have some ripple in the untensioned state.
  • the rigidity must be of a certain minimum size so that the valve disc remains somewhat centered in the device, since the valve disc is preferably unguided except through the pressure chamber edge or the inner wall of the storage housing. If a very elastic quality is selected for the valve disc for cost reasons or for reasons of the particularly low masses, it may be expedient to reinforce the valve disc with a support disc which is arranged, for example, on the side of the valve disc facing away from the pipe end or as a core insert in the Valve disc is inserted.
  • the device can be charged for a triggering event in a few seconds because the filling is not hindered by a restriction or the like at any point. Due to the quick fillability, the number of devices required for emptying a silo can often be reduced. A prerequisite is, of course, a correspondingly generous amount of air to quickly fill the device.
  • valve disk only has to be held approximately in its position in order to keep it essentially centered. This simplifies the production even further, because blanks punched out of meter goods can be used as valve disks.
  • a very precise central assignment of the pressure chamber to the pipe is not necessary, since this is not important. Even without a central position, there is the desired sealing at the respective points, so that extremely low demands must be placed on the precision of the device. This makes the manufacture cheaper.
  • valve disc must be stiff enough to withstand the differential pressure between the pressure chamber and the pipe in the charged idle state without any significant deformation. It has already been pointed out that the valve disk can be provided with a reinforcement, which should be light-weight for reasons of low inertia. Below such a support disc, the valve disc then acts as a pure seal, which provides a seal between the support disc and the inner tube end when the device is loaded. In the simplest case, the support disk is attached to the valve disk with a central rivet.
  • the support disc consists, for example, of a circular aluminum plate.
  • valve disk from a thin, flexible metal disk, the sealing then being effected by a temperature-resistant ring made of plastic, cork or even aluminum, which is fastened to the metal plate and points towards the inner end of the tube.
  • FIG. 1 of a device consists of a tubular storage housing 1, which is closed at both ends with a lower cover 2 and an upper cover 3 with the aid of conventional screw connections.
  • a tube 5 is welded into the lower cover 2, while there is an opening 4 in the upper cover 3. It is used to hold a valve or a line, at the end of which there is a valve, with the help of which filling with compressed air or quick ventilation is possible at this point.
  • the tube 5 is used for releasing pressure waves, which in turn are used to loosen free-flowing material in silos or other containers that tend to form bridges, stick or are difficult to free-flow for other reasons.
  • a pressure chamber 7 is formed below the upper cover 3 with the aid of a pressure chamber housing 6 and is closed on its lower side by means of a valve disk 10.
  • the wall 8 of the pressure chamber 7 has a smooth surface without abrupt transitions because it serves as a support surface for the valve disc 10 when pressure waves are emitted.
  • the exemplary embodiments shown in the figures of the drawing are available at predetermined locations on funnels or on the inner wall of storage containers or silos in single or multiple numbers and can emit a violent pressure jet in the form of a pressure wave, which has a dissolving effect on free-flowing bulk material.
  • Compressed air is admitted into the pressure chamber 7 via the valve already mentioned, which presses the slightly elastic valve disk 10 at the contact point with the pressure chamber housing 6 to release a passage gap.
  • the storage housing 1 fills with compressed air, the valve disk 10 being pressed onto the inner end of the tube 5 in a sealing manner with increasing force due to the lack of counterpressure within the tube 5.
  • valve disk 10 After filling, the valve disk 10 returns to the starting position shown, in which its edge rests more or less loosely on the pressure chamber housing 6. At this contact point, there may even be residual gaps or small openings; the only thing that matters is that there are no openings that are too large in the contact zone.
  • the area of the annular gap "s" should be chosen so that it corresponds approximately to the cross-sectional area of the tube 5. As a result, there is virtually no traffic jam at this point, which is conducive to rapid emptying of the storage housing 1 through the pipe 5.
  • the light weight of the valve disc 10 ensures a particularly sudden release of the inner end of the tube 5 when triggered, which leads to excellent results.
  • the pressure wave leaving the device is very strong, on the other hand, the range is considerable.
  • the storage housing 1, the tube 5 and the valve disk 10 are circular and are arranged concentrically to one another.
  • Rectangular or square shapes are also possible if appropriate installation conditions or the like call for these shapes.
  • the valve disk 10 is subjected to practically no stresses, if one disregards the pressure on the end of the tube in the loaded idle state and the slight deflection during the emptying of the storage housing 1.
  • Cheapest materials and simplest designs can therefore be preferred so that result in favorable manufacturing costs.
  • the valve disk 10 is provided on its side facing the pressure chamber 7 with a support disk 11 which is fastened with the aid of a clip 20.
  • a bulbous disk 21 can be provided to prevent the valve disk 10 from sliding off the clip 20.
  • the valve disk 10 is centered together with the support disk 11 by the storage housing 1, which is produced as a welded construction including a tube and flanges.
  • the pressure chamber 7 is delimited by a pressure chamber housing 6, which consists of an internally conical ring with a bevel 15. Otherwise, the function is as described above, but the valve disc 10 forms a unit with the support disc 11, which is lifted from the inner end of the tube 5 when triggered.
  • the exemplary embodiment shown in FIG. 3 differs from the ones described above primarily in that the pressure chamber housing 6 is designed as a simple ring.
  • the support disk 11 strikes the cover 3 of the storage housing 1, which does not further bother.
  • the elastic valve disk 10 rests against the inside of the chamber housing 6, which is designed as a ring, and returns to the state shown in FIG. 5 when it is filled.
  • valve disk 10 and the support disk 11 are shown for clarification, connected by a clip 20 with a bulbous disk 21, in order to be able to recognize details more precisely.
  • the support plate 11 is completely enclosed, that is covered by the elastic material of the valve plate 10 also on the side facing the pressure chamber.
  • this exemplary embodiment is particularly suitable for pressure chambers 7 which are completely flat in themselves. The impact in the event of a trigger is well dampened.
  • the exemplary embodiment shown in FIG. 6 differs from the exemplary embodiments described above in that the valve disk 10 is held on the side facing away from the pressure chamber 7 with the aid of a support ring 22.
  • the support ring 22 is welded to the storage housing 1 and bears openings 23 at intervals which let the air in the storage housing 1 pass when it is filled. If necessary. the valve disk 10 bulges slightly under pressure when filling between the tube 5 and the inside of the ring 22, so that the outer edge of the valve disk 10 is pulled slightly inwards. This opens the openings 23.
  • valve disc 10 After filling, the valve disc 10, which can be made of a very elastic quality, again assumes the position shown in FIG. 6. The same applies after completion, during which the valve disk 10 is lifted off the tube 5. During this lifting too, the outer edge of the valve disk 10 is pulled slightly inward, but it remains in the region of the support ring 23, so that its position is ensured. In addition, a modification of the attachment of the support disk 11 to the valve disk 10 can be seen in FIG. 6, which primarily indicates that all possible attachments can be considered at this point.
  • the devices presented are generally only used when necessary because they have a relatively high air consumption and compressed air is relatively expensive.
  • Another advantage of the device is that the valve disc 10 closes the tube 5 in the idle state, so that dusts located in the corresponding silo container cannot penetrate the device. A deposit within the tube 5 is harmless and does not last long; At the latest when the next pressure wave is released, these deposits are blown out.

Landscapes

  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Check Valves (AREA)
  • Pens And Brushes (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Soil Working Implements (AREA)
  • External Artificial Organs (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Vending Machines For Individual Products (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Control Of Fluid Pressure (AREA)
  • Safety Valves (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Surgical Instruments (AREA)
EP90119210A 1989-10-20 1990-10-06 Dispositif pour la production d'une onde de pression Expired - Lifetime EP0423572B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3934988A DE3934988A1 (de) 1989-10-20 1989-10-20 Geraet zur erzeugung einer druckwelle
DE3934988 1989-10-20

Publications (2)

Publication Number Publication Date
EP0423572A1 true EP0423572A1 (fr) 1991-04-24
EP0423572B1 EP0423572B1 (fr) 1994-07-27

Family

ID=6391855

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90119210A Expired - Lifetime EP0423572B1 (fr) 1989-10-20 1990-10-06 Dispositif pour la production d'une onde de pression

Country Status (8)

Country Link
EP (1) EP0423572B1 (fr)
JP (1) JPH03148487A (fr)
CN (1) CN1024776C (fr)
AT (1) ATE109102T1 (fr)
AU (1) AU625447B2 (fr)
DE (2) DE3934988A1 (fr)
NO (1) NO904516L (fr)
ZA (1) ZA908383B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4415041A1 (de) * 1994-04-29 1995-11-02 Euba Antriebstechnik Eller Gmb Vorrichtung zur Erzeugung einer Druckwelle
WO2006119889A1 (fr) 2005-05-10 2006-11-16 Larix S.R.L. Soupape d'allumage
WO2008009337A1 (fr) * 2006-07-20 2008-01-24 Larix S.R.L. Soupape d'allumage finement réglable

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH558492A (de) * 1973-12-01 1975-01-31 Luetolf Markus Rueckschlagventil, fuer gasfoermige und fluessige medien.
US3915339A (en) * 1974-07-08 1975-10-28 Matson C G Quick-release aerator for introducing high pressure air into a container to facilitate dispensing
US4046011A (en) * 1976-06-29 1977-09-06 Olsen Donald W One-way valve for fluid sampler device
EP0202720A1 (fr) * 1985-05-24 1986-11-26 Technisch Bureau KNOL B.V. Canon à air
DE2402001C3 (fr) * 1973-01-22 1988-02-11 Martin Engineering Co., Neponset, Ill., Us

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2402001C3 (fr) * 1973-01-22 1988-02-11 Martin Engineering Co., Neponset, Ill., Us
CH558492A (de) * 1973-12-01 1975-01-31 Luetolf Markus Rueckschlagventil, fuer gasfoermige und fluessige medien.
US3915339A (en) * 1974-07-08 1975-10-28 Matson C G Quick-release aerator for introducing high pressure air into a container to facilitate dispensing
US4046011A (en) * 1976-06-29 1977-09-06 Olsen Donald W One-way valve for fluid sampler device
EP0202720A1 (fr) * 1985-05-24 1986-11-26 Technisch Bureau KNOL B.V. Canon à air

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4415041A1 (de) * 1994-04-29 1995-11-02 Euba Antriebstechnik Eller Gmb Vorrichtung zur Erzeugung einer Druckwelle
WO2006119889A1 (fr) 2005-05-10 2006-11-16 Larix S.R.L. Soupape d'allumage
US7938142B2 (en) 2005-05-10 2011-05-10 Larix S.R.L. Firing valve
WO2008009337A1 (fr) * 2006-07-20 2008-01-24 Larix S.R.L. Soupape d'allumage finement réglable
US7997556B2 (en) 2006-07-20 2011-08-16 Larix S.R.L. Fine adjustable firing valve

Also Published As

Publication number Publication date
NO904516L (no) 1991-04-22
DE59006577D1 (de) 1994-09-01
ZA908383B (en) 1991-08-28
JPH03148487A (ja) 1991-06-25
AU625447B2 (en) 1992-07-09
DE3934988A1 (de) 1991-04-25
EP0423572B1 (fr) 1994-07-27
ATE109102T1 (de) 1994-08-15
CN1051022A (zh) 1991-05-01
CN1024776C (zh) 1994-06-01
NO904516D0 (no) 1990-10-18
AU6399990A (en) 1991-04-26

Similar Documents

Publication Publication Date Title
DE2223471C3 (de) Ventil zum Einsatz in einen Behälter, insbesondere in einen Aerosol-Behälter
DE2840362A1 (de) Hohlraumbildendes formteil fuer gegenstaende, insbesondere hohlladungsminen
DE3139326A1 (de) Kombiniertes ventil- und ausgaberohr fuer eine dehnbare spritze
DE3316308A1 (de) Handpumpe mit in abgesenkter stellung blockierbarer ausgabekappe zur ausgabe von fluiden substanzen
DE4123162A1 (de) Hydro-pneumatisches spuelventil an wasserkaesten fuer toiletten
EP0423572B1 (fr) Dispositif pour la production d'une onde de pression
DE3127619A1 (de) Automatische einfuellvorrichtung fuer batteriezellen
DE1475167A1 (de) Spruehkopf fuer elastische Kunststoff-Flaschen
CH681447A5 (fr)
DE2340319C2 (de) Selbsttätiger Verschluß für Behälter, insbesondere Tuben
CH209483A (de) Selbsttätiger Tubenverschluss.
DE2410532C3 (de) Abgabe- und Sicherheitsventil für Schlagsahnebehälter
DE2921442A1 (de) Pipette mit einstellbarem volumen
CH615642A5 (en) Nebuliser on a liquid container
DE1555037A1 (de) Kupplungskopf zur pneumatischen Verbindung von Strassenfahrzeugen
WO1981001130A1 (fr) Recipient sous pression
DE2950640C2 (de) Kraftstofftank mit Kraftstoffeinfüllrohr, insbesondere für Kraftfahrzeuge
EP0099964A2 (fr) Doseur avec soupape à boulet
DE2846524C2 (de) Absperr- und Dosiervorrichtung für ein fließfähiges Medium
DE10054084C2 (de) Austragsvorrichtung zum Austragen von kohäsiven bzw. adhäsiven schwerfließenden Materialien
CH390142A (de) Behälter mit Auslauf
DE2715450C3 (de) Ausgießvorrichtung mit einer das Nachfüllen verhindernden Einrichtung zum Einsetzen in den Hals einer Flasche
CH634268A5 (de) Behaelterverschluss mit kippduese.
DE3307860A1 (de) Dosiervorrichtung
DE7235447U (de) Ablaufventil fuer einen toilettenspuelkasten

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

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19910925

17Q First examination report despatched

Effective date: 19930309

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE

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

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19940727

Ref country code: DK

Effective date: 19940727

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19940727

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19940727

REF Corresponds to:

Ref document number: 109102

Country of ref document: AT

Date of ref document: 19940815

Kind code of ref document: T

REF Corresponds to:

Ref document number: 59006577

Country of ref document: DE

Date of ref document: 19940901

ET Fr: translation filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19941027

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

Ref country code: LU

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

Effective date: 19941031

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19941007

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

Ref country code: GB

Payment date: 19970829

Year of fee payment: 8

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

Ref country code: FR

Payment date: 19970916

Year of fee payment: 8

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

Ref country code: AT

Payment date: 19971021

Year of fee payment: 8

Ref country code: BE

Payment date: 19971021

Year of fee payment: 8

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

Ref country code: CH

Payment date: 19971022

Year of fee payment: 8

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

Ref country code: NL

Payment date: 19971029

Year of fee payment: 8

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

Ref country code: AT

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

Effective date: 19981006

Ref country code: GB

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

Effective date: 19981006

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

Ref country code: CH

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

Effective date: 19981031

Ref country code: LI

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

Effective date: 19981031

Ref country code: BE

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

Effective date: 19981031

BERE Be: lapsed

Owner name: HOSCH-CY

Effective date: 19981031

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

Ref country code: NL

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

Effective date: 19990501

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19981006

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: FR

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

Effective date: 19990630

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19990501

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

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

Ref country code: DE

Payment date: 20071029

Year of fee payment: 18

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

Ref country code: DE

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

Effective date: 20090501