EP3286108B1 - Abrasion resistant pulse nozzles and a system for flow of bulk materials - Google Patents

Abrasion resistant pulse nozzles and a system for flow of bulk materials Download PDF

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Publication number
EP3286108B1
EP3286108B1 EP16728606.1A EP16728606A EP3286108B1 EP 3286108 B1 EP3286108 B1 EP 3286108B1 EP 16728606 A EP16728606 A EP 16728606A EP 3286108 B1 EP3286108 B1 EP 3286108B1
Authority
EP
European Patent Office
Prior art keywords
abrasion resistant
pulse nozzle
piston
pulse
flow
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.)
Active
Application number
EP16728606.1A
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German (de)
English (en)
French (fr)
Other versions
EP3286108A1 (en
Inventor
Jan MOSA
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.)
Mosa Solution SRO
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Mosa Solution SRO
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Publication date
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Priority to PL16728606T priority Critical patent/PL3286108T3/pl
Publication of EP3286108A1 publication Critical patent/EP3286108A1/en
Application granted granted Critical
Publication of EP3286108B1 publication Critical patent/EP3286108B1/en
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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
    • B65D88/706—Aerating means, e.g. one-way check valves

Definitions

  • the present invention relates to the release of non-flowing loose materials in storage devices, storage silos, downcomers, and pipeline systems via compressed air energy in pulse nozzles.
  • the pulse nozzles reduce the external friction angle, e.g. between the stored loose material and the internal contact surface of the storage vessel wall that results in releasing stuck or deposited loose materials.
  • the released loose material then falls to the bottom discharge part of the storage vessel then drops out of the storage vessel through the discharge hole and hence, the flow of loose material across the storage vessel cross-section is provided without any physical impact by the operator.
  • the pulse nozzle systems are commonly used for traditional steel, concrete, or plastic storage vessels. These can also be applied to hoppers, weighing storage vessels, and various intermediate storage vessels. The systems are applicable both for loose materials with high granulation (e.g. raw coal) and loose materials that produce "dead zones" or arcing during storage, as well as for compacted loose materials including moist materials.
  • loose materials with high granulation e.g. raw coal
  • loose materials that produce "dead zones” or arcing during storage as well as for compacted loose materials including moist materials.
  • the pulse nozzle systems comprise an assembly consisting of a pulse nozzle and a solenoid valve.
  • the assembly in the mounting housing is provided in the wall of the discharging part of the storage vessel or the downcomer under the discharging part of the storage vessel; a flexible rubber hose is used for connection to the compressed air source, and an electric cable is used for connection with a control system or a control unit.
  • the pulse nozzle from utility model 2009-21476 comprises the basic body of the pulse nozzle, which houses a piston head body with direction surfaces of air pulses generated by the pulse valve, and the said pulses cross the inner space of the nozzle to its exterior.
  • EP 0160281 A2 is described a diffuser valve which is adapted to be fixed in the wall of storage hopper containing particulate materials and operable to dispense an air blast into the interiors of the hopper to loosen material in the region of the valve.
  • the valve has a tubular body accommodating a valve member which opens to dispense the air blast in a radial direction along the walls of the hopper to which is fixed.
  • Document DE 1909219 A1 describes a solution of a silo for particular materials, where is used a system for an aeration of the particular materials for better emptying the silo.
  • the system consists of a compressed air and valves placed on the bottom of the silo.
  • US 6237893 discloses an example of a discharge valve.
  • the discharge valve consists of a discharge valve body in metal housing, wherein the housing is embedded in a storage vessel wall.
  • a movable metal piston is placed in the discharge valve with the head end on one side and the barrier against the excessive return of the piston valve on the other side, which allows configuration of the distance for the piston head body lift.
  • Disadvantages of these systems include abrasion on technology walls (storage devices, storage vessel, silo, downcomer, or pipeline) around the nozzle piston head body. This is caused by deflated compressed air on the storage vessel sides around the nozzle head body where compressed air deteriorates the storage vessel wall material, and high abrasion occurs.
  • the object of the present invention is an embodiment of the pulse nozzle so that the technology, as well as the components of the nozzle, is protected and the life cycle improved.
  • the present invention discloses the assembly of the pulse nozzle that prevents the problems of pulse nozzles known from the art.
  • an abrasion resistant pulse nozzle comprising the pulse nozzle body, a piston with piston head body moveably located inside the pulse nozzle body, an elastic member between the first holder attached to the piston and the second holder attached to the pulse nozzle body characterized in that the piston head body front is provided with an abrasion resistant layer.
  • the abrasion resistant layer advantageously consists of tungsten carbide of up to 1 mm thickness that achieves higher abrasion resistance.
  • the abrasion resistant pulse nozzle consists of the abrasion resistant plate attached to the pulse nozzle body near the piston head body to cover up the inner technology surface, wherein the abrasion resistance plate consists of a metal sheet up to 7mm thick and a tungsten carbide layer up to 1mm.
  • the piston is provided with a bearing surface and the pulse nozzle body is provided with a securing member.
  • the assembly of the pulse nozzle is advantageously as large as possible, so that the piston head body diameter is arranged for application of a G 2 1 ⁇ 2 size solenoid valve. In this way, a larger volume of compressed air is increased, which breaks down and removes the higher layer of deposited loose material from the inner wall of the storage device, silo, downcomer, or pipeline.
  • FIG. 1 An example of the embodiment of the device is schematically illustrated in Figures 1, 2 , and 3 .
  • Fig. 1 shows the abrasion resistant pulse nozzle consisting of the pulse nozzle body 1 that houses the piston 2 with the piston head body 3 and the elastic member 6 , the said piston 2 is provided in the piston guide 5 opening.
  • the piston guide 5 opening may be provided as a securing ring moulded in pulse nozzle body 1 .
  • the elastic member 6 is attached to the first holder, being for example, the said distance ring 7 attached to the piston 2 , and to the second holder on the other side, being for example, the piston guide 5 attached to the pulse nozzle body 1 , wherein the attachment on one side is fixed, and the other side attachment is moveable.
  • the elastic member 6 is arranged so that it acts on the distance ring 7 on one side, and on the piston guide 5 on the other side, whereby the piston 2 is returned to the default position.
  • the elastic member 6 is the compressing spring.
  • the distance ring 7 is used to define the distance needed to lift the piston head body 3 .
  • the distance ring 7 is slid onto the piston 2 .
  • Screwing on and tightening the two self-locking nuts 8 define the required piston head body 3 lift.
  • Securing the member 9 and the bearing surface 4 are used to prevent the piston 2 parts entering the technology due to material fatigue failure.
  • the securing member 9 is a screw that is screwed into the pulse nozzle body 1 .
  • the piston head body 3 incorporates the bearing surface 4 made, for example, by mounting.
  • Fig. 2 shows the pulse nozzle piston head body 3 mounted on the storage vessel 12 wall. Also included in the abrasion resistant pulse nozzle is an abrasion resistant plate attached perpendicularly to the pulse nozzle axis, i.e. in parallel with the storage vessel 12 wall that covers the storage vessel 12 wall close to the pulse nozzle piston head body 3 .
  • the abrasion resistance of this embodiment comprises a metal sheet 11 of 6mm thickness on which a tungsten carbide 10 layer of 0.8mm thickness is made.
  • the total thickness of the abrasion resistant plate is 6.8mm.
  • the disclosed construction of the abrasion resistant plate does not result in the excessive deposition and accumulation of loose materials on the upper edge of the abrasion resistant plate, and a faster flow of loose material to the discharge part of the storage vessel is possible.
  • the tungsten carbide layer 10 on the abrasion resistant plate is used for storage vessel 12 wall protection against abrasion that prevents the creation of holes on the storage vessel 12 walls when blowing off compressed air for releasing deposits on the walls.
  • the tungsten carbide 10 layer is also applied to the piston head body 3 front for an improved lifecycle. This embodiment does not require as frequent replacement of the piston 2 as in the art, and no welding is further required on the storage vessel 12 walls around the pulse nozzles due to the holes present and produced by blowing off compressed air.
  • Fig. 3 shows the system of abrasion resistant pulse nozzles.
  • the basis of the pulse nozzle system is an assembly consisting of the abrasion resistant pulse nozzle described above and a solenoid valve 13 .
  • Assembly in the assembly housing 14 is the built-in wall 12 of the discharge part of the storage vessel or the downcomer under the storage vessel discharge part 15 , the elastic rubber hose 16 is used for connection to the compressed air distribution 17 , and the electric cable (not shown in the Fig.) is used for connection with the control system or the control unit 18 .
  • the type of assembly housing 14 depends on the specific application of the pulse nozzle system, which differs depending on the construction and embodiment of the storage vessel and the type of stored loose material.
  • the compressed air distribution 17 is provided from a ring-shaped tube around the perimeter of the storage vessel 12 discharge part attached with brackets 19 to the branches made from the cross section depending on the type of pulse nozzle.
  • the branches must be provided from the top part of the tube so that contamination from the compressed air distribution 17 in the solenoid valve 13 is prevented.
  • the compressed air distribution 17 must have a gradient around the perimeter of the discharge part 12 and a tube with ball valve 20 must be provided at the lowest point to remove sludge from distribution.
  • the supply line 21 is connected to the existing compressed air source 22 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
EP16728606.1A 2015-04-24 2016-04-22 Abrasion resistant pulse nozzles and a system for flow of bulk materials Active EP3286108B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL16728606T PL3286108T3 (pl) 2015-04-24 2016-04-22 Dysze pulsacyjne odporne na ścieranie oraz układ do przepływu materiałów sypkich

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CZ2015-31005U CZ29256U1 (cs) 2015-04-24 2015-04-24 Otěruvzdorná pulzní tryska a systém uvolňování netekoucích sypkých materiálů
PCT/CZ2016/000050 WO2016169535A1 (en) 2015-04-24 2016-04-22 Abrasion resistant pulse nozzles and a system for flow of bulk materials

Publications (2)

Publication Number Publication Date
EP3286108A1 EP3286108A1 (en) 2018-02-28
EP3286108B1 true EP3286108B1 (en) 2019-12-04

Family

ID=55642946

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16728606.1A Active EP3286108B1 (en) 2015-04-24 2016-04-22 Abrasion resistant pulse nozzles and a system for flow of bulk materials

Country Status (4)

Country Link
EP (1) EP3286108B1 (cs)
CZ (1) CZ29256U1 (cs)
PL (1) PL3286108T3 (cs)
WO (1) WO2016169535A1 (cs)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108100506A (zh) * 2017-12-30 2018-06-01 河南鼎盛铝业有限公司 陶瓷超导高压旋切清堵装置
CN109516006A (zh) * 2018-11-16 2019-03-26 马鞍山钢铁股份有限公司 一种料仓清堵装置及其使用方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1909219C3 (de) * 1969-02-24 1978-11-02 Fendt, Wolfgang, Dr., 8032 Graefelfing Pneumatische Einrichtung zur Produktaustragung aus Schüttgutbehältern
NZ207993A (en) * 1984-04-30 1986-09-10 J J Hutt Lift-type check valve for use as diffuser valve in hopper
US6237893B1 (en) 1999-05-11 2001-05-29 Myrlen, Inc. High pressure aerator valve
US20070000544A1 (en) * 2005-07-01 2007-01-04 Thompson Steven N Valve assembly for positive displacement pumps

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
WO2016169535A1 (en) 2016-10-27
EP3286108A1 (en) 2018-02-28
CZ29256U1 (cs) 2016-03-15
PL3286108T3 (pl) 2020-04-30

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