EP3064704A1 - Système de pulvérisation - Google Patents

Système de pulvérisation Download PDF

Info

Publication number: EP3064704A1
Authority: EP; European Patent Office
Prior art keywords: nozzles; air; water; nozzle; spraying system
Prior art date: 2015-03-05
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

EP15157865.5A

Other languages

German (de)

English (en)

Other versions

EP3064704B1 (fr

Inventor

Florian Büssing

Jörg Mantel

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.)

Bete Deutschland GmbH

Original Assignee

Bete Deutschland 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.)

2015-03-05

Filing date

2015-03-05

Publication date

2016-09-07

2015-03-05 Application filed by Bete Deutschland GmbH filed Critical Bete Deutschland GmbH

2015-03-05 Priority to EP15157865.5A priority Critical patent/EP3064704B1/fr

2015-03-05 Priority to PL15157865T priority patent/PL3064704T3/pl

2016-09-07 Publication of EP3064704A1 publication Critical patent/EP3064704A1/fr

2020-11-11 Application granted granted Critical

2020-11-11 Publication of EP3064704B1 publication Critical patent/EP3064704B1/fr

Status Active legal-status Critical Current

2035-03-05 Anticipated expiration legal-status Critical

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Classifications

- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/22—Equipment for preventing the formation of, or for removal of, dust
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
- B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
- B05B7/0483—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with gas and liquid jets intersecting in the mixing chamber
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays

Definitions

the invention relates to a spraying system having a plurality of nozzles, preferably on a frame construction, wherein the nozzles are arranged so that the spray cone of adjacent nozzles partially overlap.
the Bedüsungssystem is particularly suitable for binding dust, but can also be used for cooling of machinery or workpieces.
Bedüsungssysteme be used in underground mining, especially in dust, firedamp and hazardous areas, for example, on roadheaders in stretch drives.
a plurality of juxtaposed spray nozzles from each of which a directed to the hazardous area beam exits from a water-mist mixture ignitions of explosive gas-air mixtures can be avoided or already ignited gas-air mixtures are deleted.
spraying systems are used in tunneling, in the production of minerals, in dust-producing construction measures, loading and unloading processes and in cleaning processes.
a spraying system which has proven itself in the mining industry, is from the DE 298 19 980 U1 known.
This spraying system has a multiplicity of atomizer nozzles arranged next to one another, from each of which a jet directed towards the endangered area emerges.
the atomizer nozzles are designed as mist nozzles, which act in a compressed air Air chamber are used and each having a nozzle body whose nozzle bore is connected via radially or at an acute angle to the axis of the nozzle bore extending air supply ducts with the air chamber.
a pressurized water spray nozzle is provided which generates a running in the longitudinal direction of the nozzle bore water jet, wherein the pressure of the pressurized water is higher than that of the compressed air.
This spraying system has proven itself in mining in and of itself, but is not always sufficient in terms of its performance in the deposition of dry dusts and cooling of the corresponding machines.
a particular problem is the development of dust in modern tunneling.
Modern tunnel boring machines are often full-cut machines and dismantle the entire tunnel cross-section in one work step.
a large part of the mined material is converted into small-scale forms, producing dust in large quantities.
To bind the dust is sprayed on spraying water.
This spraying device is particularly suitable for cooling the excavation tool and the working front, but has little influence on the dust released into the environment, which accumulates and at a certain concentration leads to interruption of work.
the invention has for its object to improve the known Bedüsungsvoriquesen so that they ensure adequate cooling of the work tools and efficiently precipitate the resulting dust on the work front.
the work stoppages are to be minimized, the work environment for the operating staff are made bearable.
nozzles are two-fluid nozzles, where air and water in a pressure ratio of 1: 1 to 2: 1, preferably 1.1: 1.6, is supplied the water supply of each nozzle is arranged axially and leads into a nozzle element arranged in a mixing chamber, the air supply leads into the mixing chamber and the radiation of the spray from the mixing chamber of each nozzle takes place in a cone.
the spraying system according to the invention serves primarily for binding and precipitation of dust and, moreover, also for cooling work tools and the working front. It can be used in mining and tunneling, in the extraction of minerals, in the cleaning of surface, as well as in construction and demolition.
the spraying system preferably has a frame construction in which a plurality of nozzles is embedded.
the frame construction may be, for example, a linear construction with two or more nozzles, but also a combination of several subframes which are configured to one another as required. These sub-frames may be arranged, for example, around a working head.
Particularly advantageous is an embodiment in which the frame construction consists of two sub-frames, each of which has approximately trapezoidal shape, in which the long base side is missing.
the two trapezoidal substructures are with their open side placed opposite each other, for example, around the working area of a tunnel boring machine.
the nozzles are arranged in particular on the frame construction in such a way that the spraying cones of adjacent nozzles partially overlap. This means that, for example, the working area of a machine can be completely enclosed or acted upon by a spray mist.
the nozzles are two-fluid nozzles, to which air and water are supplied.
the nozzles are designed so that air and water are swirled together and delivered in the form of a spray. It has been shown that the spray becomes finer with increasing air pressure.
the pressure ratio of air to water is in the range of 1: 1 to 2: 1, preferably 1.1: 1 to 1.6: 1.
nozzles are used in which the water supply extends axially into each nozzle and leads into a nozzle element arranged in a mixing chamber.
the nozzle element itself is preferably formed as a spiral element.
the air supply preferably takes place axially into the mixing chamber, in which air and water are swirled together.
the outlet of the water-air mixture takes place through outlet nozzles, which are arranged so that the spray takes place as a hollow or full cone.
air and water are passed in parallel into the nozzles so that they enter the mixing chamber in the same direction.
the water jet receives a twist and is fed laterally into the air flow.
air-water mixture can be accelerated up to supersonic speed and subsequently defined relaxed. This achieves optimum atomization fineness and good controllability.
a higher air than water pressure is recommended for fine drop sizes;
an air pressure that greatly exceeds the water pressure, detrimental to the Ausbringrate and for dust deposition, especially on the exiting air can cause further turbulence of the dust. Therefore, a ratio of air pressure to water pressure of 2: 1 is an upper limit.
the nozzles are embedded in the frame structure via nozzle holders.
This arrangement has the advantage that the nozzles on the one hand can be easily removed and cleaned, on the other hand, but also can be easily replaced by nozzles of a different spray characteristics.
the spraying system can thus generate a very narrow injection field directed inwards, or else a wide spray field that surrounds a working area in a circle encloses it, as it were.
the frame construction is formed from hollow profiles into which the nozzle holders are embedded. It serves a hollow profile of the water supply and the other of the air duct.
the hollow sections are expediently arranged on top of one another, the nozzle holders being embedded in the lower hollow profile for the air guidance and the nozzles inserted therein projecting with their water inlet into the upper hollow profile for the water supply.
the nozzles preferably produce an oval spray field in the solid cone whose outer end or outer ends overlap with the oval spray fields of adjacent nozzles.
more outlet openings are arranged around a central outlet opening for the spray in a circle at an angle to the longitudinal axis.
the spray angles may vary depending on the application and spray field characteristics.
the central outlet opening is missing.
the spraying system according to the invention is connected to a central control unit which controls the air and water supply either individually for each individual nozzle or over the frame construction and the nozzle holders.
a control can be tuned, for example, to the running time of a machine connected to it, such that a spray is emitted when the machine is running, depending on the intensity of the machine activity. Spraying may continue for a while after the machine is turned off.
the water flow is suitably about 0.5 to 5 l / min. per nozzle and preferably 1.5 to 3.5 l / min.
the air consumption is usually in the range of 25 to 75 Nm 3 / h per nozzle.
the spraying system according to the invention is intended in particular for use in mining and tunneling. It can be used advantageously together with a tunnel boring machine or a tunneling machine in track construction, also for explosion protection.
Fig. 1 shows an inventive Bedüsungssystem 1, which consists of two mutually mirror-image corresponding frame construction 2a and 2b.
the two frame structures, which together form the Bedüsungssystem 1, consist of two box-shaped hollow sections 3 and 4, which are welded together.
Each of the two frame structures has approximately the shape of an isosceles trapezium, the base side is missing and one of the legs is shortened.
the two frame structures 2a and 2b face each other with the open side.
the frame structures 2a and 2b consist of 2 welded box sections 3 and 4, which are closed at the end faces.
the box section 3 is water-bearing, the box section 4 air.
the air-conducting box profile 4 is located on the nozzle side, on which the nozzle holder 5 can be seen. In each case two nozzle holders are located on the long leg and the base side, a nozzle holder 5 on the short leg.
Fig. 1b the back or water-bearing side is shown with the box section 3.
the box section 3 In the region of the connection of the short base side and the long leg are each an air inlet 6 and a water inlet 7, through which the hollow sections 3 and 4 are supplied with the respective media.
the air inlet 6 extends through the hollow section 3 for the water supply It is understood that the two hollow sections 3 and 4 are strictly separated from each other.
the nozzle holders 5 are located on the air-guiding side 4 and are preferably welded into the frame construction. They have access openings for the air from the air-conducting hollow section 4 and protrude through the hollow sections 3 and 4 separating wall through with its water-side end in the hollow section 3. It is understood that the nozzle holder are sealingly embedded in the frame structure 2a and 2b respectively ,
the spraying system according to Fig. 1 is intended to fog the working area of a tunneling machine or the like. For this purpose, it is connected to the machine in the area of the working head, to which the in Fig. 1a and 1b shown supporting structure is used.
This support structure consists on the one hand of the frame structure of hollow sections 2a and 2b stabilizing sheets 9a and 9b and elements 10a and 10b for fixing the frame structure to a machine.
Fig. 2 shows a section through the hollow sections of a frame construction according to the invention in the region of an air supply 6.
the lower profile 4 is the air-conducting profile, the upper profile 3, the water-bearing.
the profile 3 is U-shaped and welded to the lower box section 4.
the air inlet 6 is welded into an opening of the upper profile 3 and welded with its end on the box section. It is understood that the welds are made tight for the respective medium.
the air supply 6 has an internal thread 12 in the inlet, into which an air line, for example in the form of a hose, can be screwed.
Fig. 3 shows a section through the frame of a Bedüsungssystems level of a water supply 7.
box section 4 for the air duct the box section 4 for the air duct
the welded U-section 3 for the water supply and the water supply 7, which is placed on the U-profile.
a bore 8 establishes the connection to the water-bearing profile 3.
Fig. 4 shows a nozzle holder 5 in its position in the frame structure 2a and 2b, respectively.
the nozzle holder 5 has a receptacle 13 into which the nozzle is screwed.
An internal thread 16 connects to the nozzle.
In the tapered part of two inlet openings 14 are shown for the air from the air duct 4, in the water-side end 15 is the receptacle for the water inlet of the nozzle.
the nozzle holder 5 is welded into the construction.
the nozzle arranged therein can simply be exchanged by being screwed in, either for maintenance purposes or to insert a nozzle with a different spray characteristic.
Fig. 5 shows a two-fluid nozzle 20, as it is preferably used according to the invention.
the nozzle 20 has a water inlet 21 which extends centrally through the nozzle and leads to the spiral element 24.
a plurality of air inlets 22 are arranged, which leads into the mixing chamber 27, in which the spiral element 24 is arranged.
the air-water mixture exits through a plurality of outlets 23 in the air cap 25; only one outlet 23 is shown, which is arranged at an angle to the central axis. Additional outlets are disposed about the central axis, wherein the angle to the axis may vary to produce the preferred spray field.
the nozzle may also have a central outlet.
the air cap 25 is screwed onto the actual main body 28 of the nozzle.
a lock nut 26 facilitates assembly.
the water inlet 21 is also screwed into the nozzle body via the thread 31.
a thread 30 serves to fix the nozzle 20 in the in Fig. 4 shown nozzle holder 5, wherein a sealing ring 29 ensures the tightness.
a sealing ring 32 seals the inlet part 21 of the nozzle 20 against the receptacle 15 of the nozzle holder 5 from.
Fig. 6 shows an inventive arrangement of a Bedüsungssystems on a typical tunneling machine with a double cutting head 41.
the spray cone 40 which generates the Dusüsstrom are substantially oval and overlap each other in such a way that the working area of the machine is enclosed by a circular spray mist. This causes a lot effective precipitation of the dust immediately after emergence. At the same time, the spray cools the implement and the working area.
Fig. 7 shows the arrangement of Fig. 6 in a perspective view with the part 2a of the frame structure, which is attached to the machine head 42 and envelop the cutting element 41 with the nozzle cones 40.
Each of the nozzles 20 forms an oval solid cone which overlaps with the spray cones of adjacent nozzles 20 and generates a spray surrounding the cutting wheel 41 on all sides.
spray booth shown in the figures represents only one aspect of the invention.
Other forms of training, both one-piece and multi-part, are readily possible.
a linear arrangement of nozzles in a frame construction or a juxtaposition of linear spraying systems may be useful in order to counter dust formation in conveyor belts or loading systems.
nozzles can be arranged directly on a working device and individually supplied with air and water.

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Engineering & Computer Science (AREA)
Mining & Mineral Resources (AREA)
Mechanical Engineering (AREA)
Life Sciences & Earth Sciences (AREA)
General Life Sciences & Earth Sciences (AREA)
Geochemistry & Mineralogy (AREA)
Geology (AREA)
Nozzles (AREA)

EP15157865.5A 2015-03-05 2015-03-05 Système de pulvérisation Active EP3064704B1 (fr)

Priority Applications (2)

Application Number	Priority Date	Filing Date	Title
EP15157865.5A EP3064704B1 (fr)	2015-03-05	2015-03-05	Système de pulvérisation
PL15157865T PL3064704T3 (pl)	2015-03-05	2015-03-05	System zraszający

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
EP15157865.5A EP3064704B1 (fr)	2015-03-05	2015-03-05	Système de pulvérisation

Publications (2)

Publication Number	Publication Date
EP3064704A1 true EP3064704A1 (fr)	2016-09-07
EP3064704B1 EP3064704B1 (fr)	2020-11-11

Family

ID=52627077

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP15157865.5A Active EP3064704B1 (fr)	2015-03-05	2015-03-05	Système de pulvérisation

Country Status (2)

Country	Link
EP (1)	EP3064704B1 (fr)
PL (1)	PL3064704T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN110242344A (zh) *	2019-07-30	2019-09-17	鄂尔多斯市中北煤化工有限公司	一种向煤矿综采支架后方自动喷洒粉状防火材料的装置
WO2024239680A1 (fr) *	2023-05-23	2024-11-28	中煤科工集团重庆研究院有限公司	Système de nettoyage de poussière accumulée sur une voie de transport auxiliaire de véhicule à roues à bandage en caoutchouc dans une mine de charbon

Citations (11)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE301230C (fr) *
DE3441386A1 (de) *	1984-11-13	1986-05-15	Gewerkschaft Eisenhütte Westfalia, 4670 Lünen	Verfahren und einrichtung zum niederschlagen von staub bei teilschnittmaschinen
DE3606996A1 (de) *	1985-03-20	1986-09-25	Hans Krummenauer GmbH & Co KG, 6680 Neunkirchen	Schraemmwalze mit ejektorbeduesung
DE3903437A1 (de) *	1989-02-06	1990-08-09	Ruhrkohle Ag	Anlage zum herstellen von daemmen im untertagebetrieb aus staubfoermigem baustoff und aus dammabschalungen
DE4427252A1 (de) *	1994-07-30	1996-02-01	Spraying Systems Deutschland G	Sprühdüse zur Erzeugung eines kegelförmigen Strahls
DE4439856A1 (de) *	1994-11-08	1996-05-09	Krummenauer Gmbh & Co Kg	Vorrichtung zum Binden von Staub in Wasser
DE29819980U1 (de)	1998-11-09	1999-02-18	Bauunternehmung E. Heitkamp GmbH, 44652 Herne	Wasser-Nebel-Bedüsungssystem, insbesondere für Teilschnittmaschinen im Streckenvortrieb
DE10354306A1 (de)	2003-11-20	2005-06-30	Deilmann-Haniel Mining Systems Gmbh	Bedüsungsvorrichtung mit Nachmischeinrichtung
AT9377U1 (de) *	2006-04-21	2007-09-15	Rosenbauer Int Ag	Schaumanlage für den personen- bzw. objektschutz
DE102010022114A1 (de) *	2010-05-20	2011-11-24	Dh Mining System Gmbh	Vorrichtung zur Wassernebelbedüsung
WO2012126028A2 (fr) *	2011-03-23	2012-09-27	Sandvik Mining And Construction G.M.B.H.	Dispositif de refroidissement de trépans

2015
- 2015-03-05 PL PL15157865T patent/PL3064704T3/pl unknown
- 2015-03-05 EP EP15157865.5A patent/EP3064704B1/fr active Active

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE301230C (fr) *
DE3441386A1 (de) *	1984-11-13	1986-05-15	Gewerkschaft Eisenhütte Westfalia, 4670 Lünen	Verfahren und einrichtung zum niederschlagen von staub bei teilschnittmaschinen
DE3606996A1 (de) *	1985-03-20	1986-09-25	Hans Krummenauer GmbH & Co KG, 6680 Neunkirchen	Schraemmwalze mit ejektorbeduesung
DE3903437A1 (de) *	1989-02-06	1990-08-09	Ruhrkohle Ag	Anlage zum herstellen von daemmen im untertagebetrieb aus staubfoermigem baustoff und aus dammabschalungen
DE4427252A1 (de) *	1994-07-30	1996-02-01	Spraying Systems Deutschland G	Sprühdüse zur Erzeugung eines kegelförmigen Strahls
DE4439856A1 (de) *	1994-11-08	1996-05-09	Krummenauer Gmbh & Co Kg	Vorrichtung zum Binden von Staub in Wasser
DE29819980U1 (de)	1998-11-09	1999-02-18	Bauunternehmung E. Heitkamp GmbH, 44652 Herne	Wasser-Nebel-Bedüsungssystem, insbesondere für Teilschnittmaschinen im Streckenvortrieb
DE10354306A1 (de)	2003-11-20	2005-06-30	Deilmann-Haniel Mining Systems Gmbh	Bedüsungsvorrichtung mit Nachmischeinrichtung
AT9377U1 (de) *	2006-04-21	2007-09-15	Rosenbauer Int Ag	Schaumanlage für den personen- bzw. objektschutz
DE102010022114A1 (de) *	2010-05-20	2011-11-24	Dh Mining System Gmbh	Vorrichtung zur Wassernebelbedüsung
WO2012126028A2 (fr) *	2011-03-23	2012-09-27	Sandvik Mining And Construction G.M.B.H.	Dispositif de refroidissement de trépans

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN110242344A (zh) *	2019-07-30	2019-09-17	鄂尔多斯市中北煤化工有限公司	一种向煤矿综采支架后方自动喷洒粉状防火材料的装置
CN110242344B (zh) *	2019-07-30	2024-04-30	鄂尔多斯市中北煤化工有限公司	一种向煤矿综采支架后方自动喷洒粉状防火材料的装置
WO2024239680A1 (fr) *	2023-05-23	2024-11-28	中煤科工集团重庆研究院有限公司	Système de nettoyage de poussière accumulée sur une voie de transport auxiliaire de véhicule à roues à bandage en caoutchouc dans une mine de charbon

Also Published As

Publication number	Publication date
PL3064704T3 (pl)	2021-05-17
EP3064704B1 (fr)	2020-11-11

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