EP0324368B1 - Luftstossgerät zum Beseitigen von Materialaufstauungen von Schüttgütern in Bunkern u. dgl. - Google Patents

Luftstossgerät zum Beseitigen von Materialaufstauungen von Schüttgütern in Bunkern u. dgl. Download PDF

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Publication number
EP0324368B1
EP0324368B1 EP89100108A EP89100108A EP0324368B1 EP 0324368 B1 EP0324368 B1 EP 0324368B1 EP 89100108 A EP89100108 A EP 89100108A EP 89100108 A EP89100108 A EP 89100108A EP 0324368 B1 EP0324368 B1 EP 0324368B1
Authority
EP
European Patent Office
Prior art keywords
piping
valve
storage container
additional
compressed air
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
EP89100108A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0324368A1 (de
Inventor
Udo Leibling
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.)
Agrichema Materialflusstechnik GmbH
Original Assignee
Agrichema Materialflusstechnik GmbH
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 Agrichema Materialflusstechnik GmbH filed Critical Agrichema Materialflusstechnik GmbH
Priority to AT89100108T priority Critical patent/ATE74324T1/de
Publication of EP0324368A1 publication Critical patent/EP0324368A1/de
Application granted granted Critical
Publication of EP0324368B1 publication Critical patent/EP0324368B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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 invention relates to an air blast device according to the preamble of claim 1. Such an air blast device is known.
  • Air blasting devices are used to dissolve or remove material build-up and material caking of bulk goods, in particular granular and dusty bulk goods in bunkers, hoppers, silos and the like. Like. Used. This is achieved by strong bursts of compressed air escaping suddenly through a blow-out opening of the device, the compressed air stored in the storage container of the air blast device escaping through the blow-out opening in a fraction of a second. Considerable impact forces are developed here.
  • a shut-off valve is usually actuated, which is arranged in the compressed air supply line to the storage container of the air blast device in order to close off the air blast device from the external compressed air source. Then either the air blast device is fired or the storage tank is vented via a vent plug arranged in the jacket of the storage container.
  • the object of the invention is to develop air blast devices in such a way that increased safety is ensured even when the air blast device is disassembled carelessly or during maintenance work.
  • an additional line branching off from the compressed air supply line behind the shut-off valve in which a check valve is arranged, which prevents the compressed air supply to the storage tank, but a backflow is possible makes when, for example after closing the shut-off valve, the connector with which the air blast device and its supply line are connected to the compressed air source or to the compressed air network is uncoupled.
  • compressed air can escape from the interior of the storage container via the check valve, the presence of compressed air inside the storage container being indicated to the operating personnel by a loud hissing.
  • the shut-off valve is at the same time designed as a vent valve, such that when the shut-off valve is in the locked position, the downstream part is also vented.
  • a container forced ventilation is ensured even if several air blast devices are to be combined in groups, vented and depressurized.
  • the individual air blast devices are supplied with compressed air via branch lines, which branch off from a common distributor line.
  • An additional distribution line branches off from the common distribution line, the branch lines of which each open into a corresponding branch line that leads to the air blast device.
  • Shut-off valves are provided in these additional branch lines.
  • a pressure gauge is expediently provided in the additional distributor line, by means of which the pressure conditions in the individual air blast devices can be checked, for which purpose the other branch lines or additional branch lines are of course decoupled from the additional distributor line via the shut-off valves present in the additional branch lines.
  • a vent plug is provided in the manifold.
  • a shut-off valve is provided in front of the branch lines in the distribution line, which can be equipped with a vent if necessary, so that a venting of the downstream part is enabled.
  • the main shut-off valve is provided with an additional vent, so that the downstream part is vented when the shut-off valve is closed.
  • venting via the main shut-off valve can take a long time, for which purpose additional venting with a larger bore diameter is expediently provided downstream of the main shut-off valve for the purpose of rapid venting.
  • the figure shows a schematic representation of a storage container designated by 1 of an air blast device, which is fed via a compressed air supply line 2 with compressed air from an external compressed air source, not shown.
  • a 3-way valve is arranged, which ensures the compressed air supply via the line 2 in the storage container 1 in the switching position designated A-R.
  • the position labeled A-P is the vent position, in which the connection to the external compressed air source is blocked.
  • connection head 4 at the upper end of the storage container into which the compressed air supply line 2 opens, extends into the interior of the storage container with a connecting tube designated 5, which is extends up to a guide bush 6 of a valve unit 10.
  • a piston 7 is displaceably guided in the guide bush 6.
  • the space VR above the piston 7 communicates with the interior of the storage container 1 via an overpressure diaphragm valve (not shown).
  • the piston 7 closes, as a result of resting on a valve seat 8, a discharge opening, designated 9, of the air blast device.
  • a ventilation plug designated 11 is also arranged in the jacket of the storage container 1. With this vent plug 11, the interior 12 of the storage container can be vented.
  • the operation of the air blast device is as follows. After filling the storage container 1 appropriately via the compressed air supply line 2 in the valve position A-R of the multi-way valve 3, the air blast device is fired by switching the multi-way valve 3 to the venting position A-P. This results in a direct ventilation of the upper chamber VR of the valve unit denoted by 10 via the connecting pipe 5. Since the pressure inside the storage container 12 acts on the piston 7, and in particular on its exposed, annular lower end face, via an opening 13 formed on the guide bush 6, the piston 7 is moved upward at lightning speed, so that the blow-out opening 9 is suddenly released and the compressed air compressed in the storage container 1 suddenly expands in the direction of the blow-out point.
  • shut-off valve 14 In the compressed air supply line 2 there is a shut-off valve, designated 14, which is also designed as a vent valve in such a way that when the shut-off valve 14 is closed, the downstream part is vented at the same time.
  • the shut-off valve 14 is expediently designed as a ball valve.
  • This additional line 17 leads or opens into the interior 12 of the storage container 1, specifically in the exemplary embodiment shown via a line or bore 18 formed in the connection head 4.
  • a check valve 19 is arranged in the additional line 17, which supplies compressed air from the connection piece 16 to the connection head 4 prevented, but allows backflow in the opposite direction.
  • a branch line 21 leads to the shut-off valve 14. From the distributor line 20 further branch lines 21 open, of which only a part is shown. These further branch lines 21 lead to further air blast devices, which are jointly supplied with compressed air via the distribution line 20. In the individual branch lines 21 there is in each case a non-return valve, designated 22, which only allows compressed air to be fed in the direction of the storage container, however locks against the direction.
  • an additional branch line 23, shown in broken lines, opens into each branch line 21, in each of which a check valve 24 is arranged.
  • the additional branch lines 23 open into a common additional distribution line 25, which branches off from the distribution line 20 and in which a test manometer designated by 26 and a shut-off valve 27 are arranged.
  • a shut-off valve 29 In the distributor line 20 there is also a vent plug 28 and upstream of the branch lines 21 a shut-off valve 29, which is additionally designed as a vent valve if required.
  • a group of air blast devices is supplied by the distribution line 20, the compressed air supply to this group being able to be blocked via the shut-off valve 29.
  • a main shut-off valve 33 is arranged in the main supply line 31, through which the compressed air supply to all groups and the corresponding distributor lines 20, 30 can be blocked. This main shut-off valve 33 is at the same time designed as a vent valve, with venting of the downstream part being ensured at the same time in the blocking position.
  • a ventilation valve 35 with a large ventilation diameter is arranged downstream of the main shut-off valve 33 via a branch connection 34.
  • the air blast device shown in the figure is disassembled, that is to say uncoupled from the compressed air source, or maintenance work on this air blast device is necessary, it is imperative for safety reasons required to fire the air blast device beforehand in order to reduce the pressure within the storage container 1. Instead of firing the air blast device, it is also possible to vent the interior 12 of the storage container 1 via the ventilation plug 11 on the storage container. However, if this is neglected for any reason, a forced ventilation takes place via the check valve 19 and the branch line 17 if the pipe screw connection 15 is loosened after the shut-off valve 14 has been blocked beforehand.
  • a group venting of the air blast devices of a distribution line, for example the distribution line 20, is possible in that the shut-off valve 29 is blocked and at the same time vented, although the shut-off valves 24 arranged downstream behind the shut-off valve 29 are open.
  • each individual air blast device can also be checked for its operational readiness via the manometer 26 arranged in the supply distribution line 25.
  • the shut-off valves 24 of the other branch lines are blocked.
  • a vent plug 28 in the manifold 20 also allows rapid venting.
  • a main shut-off valve 33 is arranged in the main feed line 31 which feeds the distribution lines 20 and 30 and, in the exemplary embodiment shown, at the same time vents when it is switched to the locked position. Since the venting diameter of the main shutoff valve 33 is small, the venting valve 35 with a larger bore diameter is expediently arranged downstream of the main shutoff valve 33 for the purpose of rapid venting. All connected units can be vented very quickly via this vent valve 35, for which purpose the shutoff valve 33 is of course closed and the other shutoff valves are open.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Air Transport Of Granular Materials (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Treating Waste Gases (AREA)
EP89100108A 1988-01-05 1989-01-04 Luftstossgerät zum Beseitigen von Materialaufstauungen von Schüttgütern in Bunkern u. dgl. Expired - Lifetime EP0324368B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89100108T ATE74324T1 (de) 1988-01-05 1989-01-04 Luftstossgeraet zum beseitigen von materialaufstauungen von schuettguetern in bunkern u. dgl.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3800114A DE3800114A1 (de) 1988-01-05 1988-01-05 Luftstossgeraet zum beseitigen von materialaufstauungen von schuettguetern in bunkern u. dgl.
DE3800114 1988-01-05

Publications (2)

Publication Number Publication Date
EP0324368A1 EP0324368A1 (de) 1989-07-19
EP0324368B1 true EP0324368B1 (de) 1992-04-01

Family

ID=6344838

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89100108A Expired - Lifetime EP0324368B1 (de) 1988-01-05 1989-01-04 Luftstossgerät zum Beseitigen von Materialaufstauungen von Schüttgütern in Bunkern u. dgl.

Country Status (4)

Country Link
EP (1) EP0324368B1 (cs)
AT (1) ATE74324T1 (cs)
DE (2) DE3800114A1 (cs)
GR (1) GR3004525T3 (cs)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4236896A1 (de) * 1992-10-31 1994-05-05 Maury Hans Dietmar Luftkanone zur Beseitigung von Schüttgutanbackungen und -stauungen
DE19743789B4 (de) * 1997-10-02 2005-10-06 Agrichema Materialflusstechnik Gmbh & Co. Kg Vorrichtung zum stoßartigen Ausblasen von Druckluft zur Beseitigung von Materialanbackungen von Schüttgütern in Reaktionsbehältern
FR2794440B1 (fr) * 1999-06-01 2001-07-06 Bernard Lazareth Sa Ets Canon a air
DE202006016627U1 (de) * 2006-10-30 2006-12-21 Agrilux Beteiligungs Gmbh System von Luftstoßgeräten

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8501483A (nl) * 1985-05-24 1986-12-16 Tech Bureau Knol B V Luchtstootapparaat.
EP0248265A3 (de) * 1986-05-20 1988-08-03 AGRICHEMA Materialflusstechnik GmbH Luftstossgerät zur Auflösung von Materialaufstauungen in Lagersilos für Schüttgut

Also Published As

Publication number Publication date
DE3800114A1 (de) 1989-07-13
EP0324368A1 (de) 1989-07-19
ATE74324T1 (de) 1992-04-15
DE58901053D1 (de) 1992-05-07
GR3004525T3 (cs) 1993-04-28

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