EP0021999A1 - Belüftungsvorrichtung durch plötzliches Druckluftabladen - Google Patents

Belüftungsvorrichtung durch plötzliches Druckluftabladen Download PDF

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Publication number
EP0021999A1
EP0021999A1 EP19800400904 EP80400904A EP0021999A1 EP 0021999 A1 EP0021999 A1 EP 0021999A1 EP 19800400904 EP19800400904 EP 19800400904 EP 80400904 A EP80400904 A EP 80400904A EP 0021999 A1 EP0021999 A1 EP 0021999A1
Authority
EP
European Patent Office
Prior art keywords
compressed air
inlet orifice
discharge
valve
tank
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
EP19800400904
Other languages
English (en)
French (fr)
Other versions
EP0021999B1 (de
Inventor
Jacques Albert Lestoquoy
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.)
A Responsabilite Dite Ermap Ltee Ste
Original Assignee
A Responsabilite Dite Ermap Ltee Ste
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 A Responsabilite Dite Ermap Ltee Ste filed Critical A Responsabilite Dite Ermap Ltee Ste
Publication of EP0021999A1 publication Critical patent/EP0021999A1/de
Application granted granted Critical
Publication of EP0021999B1 publication Critical patent/EP0021999B1/de
Expired legal-status Critical Current

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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
    • B65D88/703—Air blowing devices, i.e. devices for the sudden introduction of compressed air into the container

Definitions

  • the present invention relates to an aeration device by sudden discharge of compressed air, in particular to facilitate the flow of stored materials, of the type comprising a compressed air storage tank provided with an inlet orifice capable of '' be connected to a compressed air supply source via a three-way valve, a discharge pipe of the stored compressed air, which pipe extends substantially over the entire length of the tank and extends to the exterior of the tank to open into an enclosure to be aerated, and valve means for firstly, communicating the interior of the tank, except said pipe, with the air supply orifice compressed, and on the other hand, in a second step close the inlet port and put the interior of the tank in communication with said discharge line, the inlet port connected to the compressed air supply source being arranged in the axis of the said discharge line, at a distance from the internal end of the latter which constitutes a valve seat.
  • Such a device capable of recharging from ordinary sources of compressed air is thus provided for producing intermittently, sudden discharges of a predetermined volume of compressed air, in the very mass of the products which it is desired to aerate and whose flow we want to improve.
  • the existing devices are relatively expensive and time-consuming to manufacture because they require the use of a machined piston.
  • the presence of a piston of fairly large mass subjected to sudden backward movements constitutes a drawback insofar as in particular the kinetic energy put is not negligible.
  • the present invention aims precisely to remedy the aforementioned drawbacks and to allow the production of a shock wave ventilation device which is both safe, inexpensive, easy to manufacture, and of greater efficiency thanks to a simpler design of the various components.
  • valve means comprise at least one flexible membrane interposed between the internal end of the discharge line and said inlet port, and capable of alternately closing off the only internal end of the discharge line when the pressure of the compressed air from the power source is applied to the port inlet, and the closure of the single inlet orifice when the pressure of the compressed air from the supply source is no longer exerted thereon, and said membrane is arranged substantially perpendicular to the axis of the exhaust pipe and the inlet orifice and has at least one perforation in its part situated between the internal end of the exhaust pipe and the part forming the outer wall of the compressed air storage tank.
  • the inlet orifice is formed in a removable piece attached to the end of the storage tank which is close to the internal end of the exhaust pipe and has an opening of section greater than the section of the exhaust pipe and the peripheral part of the membrane of the valve means is fixed between the end of the storage tank and said removable removable part.
  • said removable end piece attached has an internal part of substantially frustoconical shape.
  • the central part of the diaphragm forming a valve is clamped between two rigid plates cooperating respectively with the internal end of the exhaust pipe and the contour of the inlet orifice forming seats valve.
  • FIG. 1 shows a container or container 100, such as a hopper, filled with pulverulent or granular products 101. It is desirable that such a hopper 100 is static and not equipped with a vibrator in order to avoid settling of the product 101 which must flow by gravity and escape through the lower opening 103. In order to destroy the vaults, bridges, chimneys which naturally tend to form by the agglomeration of particles of product 101. in particular in the vicinity of the walls of lower slope such as 104, one or more devices 1 for aeration by sudden discharge of compressed air are mounted on the same wall of the container 100.
  • Each aeration device 1 essentially comprises a reservoir 10 for storing compressed air, extended by an exhaust duct 9 provided with a coupling device, for example with a flange 91, to facilitate mounting of the device 1 on the container 100.
  • the exhaust duct 9 or an associated duct extends to the interior of the container 100.
  • an assembly 8 controls the arrival of compressed air in the tank proper 10 from a pipe 7 connected via a three-way valve 6 to a normal network 4 for supplying compressed air, for example at a pressure between about 4 and 16 bars .
  • the valve 6 controls the filling of the tank 10 by putting the pipe 7 into communication with the compressed air supply network 4, and the emptying of the tank 10 by putting the pipe 7 into communication with the exhaust 5.
  • the assembly 8 of the aeration device 1 automatically causes the immediate discharge of the compressed air contained in the reservoir 10, through the conduit 9 to produce a shock wave 102 inside container 100.
  • a tank 10 the capacity of which depends on the applications envisaged and can for example be between approximately 10 and 150 liters, but can also reach values very superior, is formed for example from two caps 11, 12 sheet steel welded tightly to form a pressure-resistant enclosure.
  • One of the ends of the tank 10, for example the cap 11, is crossed by an exhaust duct 9 whose section is very substantially smaller than the tank section 10.
  • the axial duct 9 which emerges outside the tank 10 is tightly fixed, for example by welding, to the cap 11 and is extended by a portion 90 over the major part of the length of the reservoir 10. As can be seen in FIG.
  • the cap 12 can be provided with an opening 13 with a diameter greater than the diameter of the conduit 90 and a portion 14 can be attached to the cap 12, around the opening 13.
  • the portion of the conduit 90 can relate beyond the defined surface by the simple cap 12 and ending in the vicinity of the end of the attached part 14.
  • the end 92 of the conduit 90 is designed to constitute a valve seat intended to cooperate with a valve 2 integral with a membrane 22 arranged transversely relative to the pipe section t 90.
  • the flexible membrane 22 which may for example be made of rubber is fixed by its periphery to the end 14 of the reservoir 10.
  • the membrane 22 sealingly closes the part 14 with the exception of one or more small calibrated orifices 26 formed in the membrane in its crown-shaped part disposed between the internal end of the conduit 92 of the conduit 90 and the part of the wall 14 of the reservoir 10.
  • An insert 8 provided with an inlet orifice 81 is removably attached to the end portion 14 of the reservoir 10 by connecting means such as bolts 83, 84 engaged in orifices 82.
  • the bottom part removable 8 especially clamps the peripheral part of the membrane 22 on the part 14.
  • a small free space is provided between the internal wall of the bottom part 8 and the end 92 of the section of conduit 90 so as to allow a certain clearance of the membrane 22 carrying the valve 2 between the end 92 of the axial exhaust duct and the internal wall 30 of the bottom part 8.
  • An axial inlet orifice 81 is formed in the bottom part 8 and is intended to be connected to a pipe 7.
  • the internal wall 30 of the bottom part 8 can be for example of frustoconical shape and delimits with the membrane 2 a chamber 31 which is placed in communication with the pipe 7 by the inlet port 81 and with the interior of the tank 10 by calibrated ports 26.
  • the membrane 22 can be sandwiched between two plates 21, 23 cooperating respectively with the end 92 of the duct section 90 and a bearing 85 of the internal wall 30 of the bottom part 8.
  • the bearing 85 constitutes a valve seat for the plate 23 around the inlet orifice 81.
  • the plates 21, 23 are assembled to the membrane 22 in a leaktight manner, using an assembly means such as 24.
  • a spring 25 can cooperate with the valve 21, 22, 23 for adjusting the stiffness of the membrane 22.
  • the valve 6, which is a conventional 3/2 way valve or solenoid valve, puts the pipe 7 in communication with the source 4 of compressed air supply.
  • the compressed air enters through the inlet orifice 81 of the bottom part 8 into the chamber 31 and pushes the membrane 22 which presses the valve 21 against the end 92 of the section conduit 90 thus closing the opening of the latter.
  • the compressed air then passes from the chamber 31 inside the tank 10, except the conduit 90, through the orifices 26 of the membrane 22.
  • the interior of the conduit 90 being at atmospheric pressure, the assembly 2 remains plated against the end 92 of the conduit 90 during the entire time of filling of the reservoir 10 with compressed air.
  • the cycle can start again and the tank 10 is recharged as indicated above by placing the pipe 7 in communication with the compressed air supply 4 by the valve 6.
  • the device according to the invention is particularly remarkable in that the power supply in compressed air is operated axially from the inlet orifice 81, as is the discharge through the axial tube 9.
  • the arrival and departure in line of the compressed air contribute to ensuring easy and safe operation of the system, especially since the only mobile assembly is constituted by the membrane 22 which with its associated elements is of low mass and has a limited clearance.
  • the device according to the invention is particularly compact because the valve means constituted by the assembly 2 forming a valve and the bottom part 8 have a limited bulk in the axial direction.
EP19800400904 1979-06-19 1980-06-19 Belüftungsvorrichtung durch plötzliches Druckluftabladen Expired EP0021999B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7915704A FR2459188A1 (fr) 1979-06-19 1979-06-19 Dispositif d'aeration par decharge brusque d'air comprime
FR7915704 1979-06-19

Publications (2)

Publication Number Publication Date
EP0021999A1 true EP0021999A1 (de) 1981-01-07
EP0021999B1 EP0021999B1 (de) 1983-04-27

Family

ID=9226805

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19800400904 Expired EP0021999B1 (de) 1979-06-19 1980-06-19 Belüftungsvorrichtung durch plötzliches Druckluftabladen

Country Status (3)

Country Link
EP (1) EP0021999B1 (de)
DE (1) DE3062887D1 (de)
FR (1) FR2459188A1 (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2518668A1 (fr) * 1981-12-23 1983-06-24 Agrichema Materialflusstechnik Appareil pour impulsions d'air, notamment pour installations de stockage et transport de produits en vrac
EP0097236A1 (de) * 1982-06-23 1984-01-04 VSR Engineering GmbH Fördertechnik Blasvorrichtung zum Beseitigen von Aufstauungen in Lagersilos für Schüttgut
US4449644A (en) * 1981-06-18 1984-05-22 Ludlow Industries, Inc. Blast aerator for fluidizing granular material
FR2547639A1 (fr) * 1983-06-15 1984-12-21 Simoens Herve Piston de valve d'alimentation d'une capacite puis de decharge brutale de cette capacite et valve de decharge brutale pourvue de ce piston
AU580414B2 (en) * 1985-05-24 1989-01-12 Technisch Bureau Knol B.V. Air cannon
US4817821A (en) * 1985-10-31 1989-04-04 Simoens Herve H J Valve for pressurizing a compressed gas accumulator and for the sudden discharge of gas from the accumulator
US5853160A (en) * 1997-12-23 1998-12-29 Martin Engineering Company Aerator valve assembly
EP0881417A3 (de) * 1997-05-30 1999-01-20 Martin Engineering Company Belüftungsventilanordnung
EP1279622A1 (de) * 2001-07-23 2003-01-29 Kanekita Co., Ltd. Luftpulsator sowie denselben benutzende Vorrichtungen
US7273205B2 (en) 2004-01-14 2007-09-25 Martin Engineering Company Positive pressure actuated aerator valve assembly

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104828896A (zh) * 2015-05-15 2015-08-12 浙江沐源环境工程有限公司 一种密闭式粉末活性炭投加装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2214651A1 (de) * 1973-01-22 1974-08-19 Martin Eng Co

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2214651A1 (de) * 1973-01-22 1974-08-19 Martin Eng Co

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4449644A (en) * 1981-06-18 1984-05-22 Ludlow Industries, Inc. Blast aerator for fluidizing granular material
FR2518668A1 (fr) * 1981-12-23 1983-06-24 Agrichema Materialflusstechnik Appareil pour impulsions d'air, notamment pour installations de stockage et transport de produits en vrac
EP0097236A1 (de) * 1982-06-23 1984-01-04 VSR Engineering GmbH Fördertechnik Blasvorrichtung zum Beseitigen von Aufstauungen in Lagersilos für Schüttgut
FR2547639A1 (fr) * 1983-06-15 1984-12-21 Simoens Herve Piston de valve d'alimentation d'une capacite puis de decharge brutale de cette capacite et valve de decharge brutale pourvue de ce piston
EP0134726A1 (de) * 1983-06-15 1985-03-20 Standard Industrie S.A. Kolbengesteuertes schnelles Entladeventil
US4579138A (en) * 1983-06-15 1986-04-01 Herve Simoens Piston and valve arrangement
AU580414B2 (en) * 1985-05-24 1989-01-12 Technisch Bureau Knol B.V. Air cannon
US4817821A (en) * 1985-10-31 1989-04-04 Simoens Herve H J Valve for pressurizing a compressed gas accumulator and for the sudden discharge of gas from the accumulator
EP0881417A3 (de) * 1997-05-30 1999-01-20 Martin Engineering Company Belüftungsventilanordnung
AU732749B2 (en) * 1997-05-30 2001-04-26 Martin Engineering Company Aerator valve assembly
US5853160A (en) * 1997-12-23 1998-12-29 Martin Engineering Company Aerator valve assembly
EP1279622A1 (de) * 2001-07-23 2003-01-29 Kanekita Co., Ltd. Luftpulsator sowie denselben benutzende Vorrichtungen
US6755114B2 (en) 2001-07-23 2004-06-29 Kanekita Co., Ltd. Air pulser and devices
US7273205B2 (en) 2004-01-14 2007-09-25 Martin Engineering Company Positive pressure actuated aerator valve assembly

Also Published As

Publication number Publication date
EP0021999B1 (de) 1983-04-27
FR2459188B1 (de) 1983-05-06
FR2459188A1 (fr) 1981-01-09
DE3062887D1 (en) 1983-06-01

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