EP2531696B1 - Unité de buse de pulvérisation - Google Patents

Unité de buse de pulvérisation Download PDF

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Publication number
EP2531696B1
EP2531696B1 EP11703172.4A EP11703172A EP2531696B1 EP 2531696 B1 EP2531696 B1 EP 2531696B1 EP 11703172 A EP11703172 A EP 11703172A EP 2531696 B1 EP2531696 B1 EP 2531696B1
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EP
European Patent Office
Prior art keywords
nozzle
closure means
spray
pressure chamber
spray nozzle
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.)
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Application number
EP11703172.4A
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German (de)
English (en)
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EP2531696A2 (fr
Inventor
Edgar Roberto Solis Perez
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Individual
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Individual
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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
    • E21C35/18—Mining picks; Holders therefor
    • E21C35/187—Mining picks; Holders therefor with arrangement of fluid-spraying nozzles
    • 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
    • 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
    • E21C35/23—Distribution of spraying-fluids in rotating cutter-heads

Definitions

  • a water nozzle in particular for dust control, for example, on cutting rollers, known, which consists essentially of a screwed into a water supply line, on the water inlet side a collecting bore and on the water outlet side a central bore of small diameter having housing.
  • a major disadvantage of such water nozzles is a constant blockage caused by accumulating within the water supply lines solid components such as rust. If the cleaning of such nozzles or the removal of the solid components by unscrewing the water nozzles and flushing done with water, this process each downtime of the cutting roller and thus high costs and work involved.
  • the object is to provide a water nozzle, especially for dust control, for example, on cutting rollers or other underground facilities, which avoids the blockages and largely guarantees a functionality of the nozzles and which is also simple and inexpensive to manufacture.
  • FIG. 4 the publication CN 101428255 A a spray nozzle unit can be seen, which has a housing with the local reference numeral 15.
  • Three needles - there reference numeral 11 - is connected to a piston with the local reference numeral 10 and arranged in the housing 15.
  • the housing 15 is connected to a bottom part with the local reference numeral 13 forming a cavity; the connection is sealed by a seal with the local reference numeral 12.
  • a pressure chamber is formed in the nozzle body, which is movably limited by the closure means.
  • the pressure chamber can be pressurized with spray liquid, wherein the pressure chamber is preferably arranged such that the closure means can be transferred from the closed position into the open position by pressurizing the pressure chamber. Due to the movable boundary of the pressure chamber through a partial region of the closure means, the closure means is moved in the nozzle body such that the volume of the pressure chamber increases. Consequently, the closure means can move from the closed position to the open position.
  • the closure means designed as a closing piston can have at least one sealing element in order to carry out the pressure chamber in a pressure-tight manner. The sealing element in particular seals the closing piston dynamically against the inner wall of the nozzle body.
  • the pressure chamber opens funnel-shaped into the nozzle opening in the opening position of the closure means, wherein the pressure chamber delimiting surfaces at least partially have a swirl structure, which allows a discharge of the spray liquid from the nozzle opening under a twist.
  • the surfaces with a swirl structure relate in particular to the surfaces adjacent to the nozzle opening, for example on the inside in the nozzle body and / or on the front side on the closure means.
  • the supply channel can open into the pressure chamber in such a way that already a rotation of the spray liquid is generated about the central axis.
  • the pressure chamber likewise extends rotationally symmetrically around the central axis, and the funnel-shaped narrowing of the flow cross-section in the direction of the nozzle opening produces an amplification of the swirl effect.
  • the fluid pressure of the spray liquid can be 4 bar to 8 bar, preferably 5 bar to 7 bar and particularly preferably 6 bar.
  • a water system with 6 bar is regularly present in underground mining, so no peripheral means must be provided to operate a spraying plant with higher pressures.
  • the nozzle body can be designed to be arranged in a nozzle receptacle of a spraying system, which serves in particular for spraying a cutting head of a roadheader in underground mining.
  • a nozzle receptacle of a spraying system which serves in particular for spraying a cutting head of a roadheader in underground mining.
  • this may have a threaded portion with which the nozzle body can be screwed into a nozzle holder.
  • To screw the nozzle body may further have a key geometry to screw the nozzle body on the threaded portion with a tool in the nozzle holder.
  • a closure means 12 is arranged in the nozzle body 10.
  • the closure means 12 is formed as a closing piston 12 and received in a liftable manner along the central axis 13 between a closed position and the open position shown.
  • the closing piston 12 is longitudinally movably guided in the nozzle body 10 and sealed against the inner wall of the nozzle body 10 with a sealing element 22.
  • the nozzle body 10 On the receiving side 10a, the nozzle body 10 has an insert element 21, in which the closing piston 12 is likewise guided along the central axis 13 and sealed with a further sealing element 23.
  • the water passes through the first supply channel section 16a and the second supply channel sections 16b into a pressure chamber 14 within the nozzle body 10.
  • the pressure chamber 14 is movably limited by the closing piston 12. Due to the water pressure present in the pressure chamber 14, for example 4 bar or preferably 6 bar, the closing piston 12 is transferred to the opening position shown. At the same time, a closing pin 12a provided on the front side on the closing piston 12 releases the nozzle opening 11.
  • the movement of the closing piston 12 in the direction of the opening position shown is against the spring bias of a spring element 15.
  • This is located on the side of the closing piston 12, which is the arrangement of the pressure chamber 14 opposite.
  • the spring element 15 biases the closing piston 12 in the closing direction in which the closing mandrel 12a extends through the nozzle opening 11. This prevents impurities from entering the nozzle opening 11 in the stationary state.
  • the spring element 15 is embodied by way of example as a helical compression spring and is clamped between the insert element 21 and a collar of the closing piston 12. As long as a water supply 24 takes place, and as long as consequently the pressure chamber 14 is pressurized, the closing piston 12 remains in the illustrated opening position, and the water can emerge from the nozzle opening 12 as shown.
  • the pressure chamber 14 opens funnel-shaped into the nozzle opening 11 when the closing piston 12 is in the open position, wherein the pressure chamber 14 defining surfaces have a swirl structure, which causes a leakage of water from the nozzle opening 11 under a twist. This achieves a large spray angle, for example a spray angle of 90 °. Since the pressure chamber 14 extends rotationally symmetrically about the closing piston 12 and the closing mandrel 12a, the swirl effect of the water outlet from the nozzle opening 11 is further enhanced.
  • the closing mandrel 12a may be arranged in the position shown behind the nozzle opening 11 inside the nozzle body 10 when the closing piston 12 is in the open position.
  • a low-pressure chamber 17 is formed on the side facing away from the pressure chamber 14 of the closing piston 12.
  • the low-pressure chamber 17 is fluidly connected to the outside of the nozzle body 10. If the closing piston 12 moves between the closed position and the open position, the volume of the low-pressure chamber 17 changes, and respiration through the compensation bore 18 is made possible.
  • the spring element 15 is disposed within the low-pressure chamber 17.
  • Fig. 2 shows a further illustration of the embodiment of the spray nozzle unit 100 according to Fig. 1 ,
  • the closing piston 12 is arranged in the closed position.
  • the closing mandrel 12a extends through the nozzle opening 11.
  • the closing piston 12 assumes the position shown within the nozzle body 10 when no water supply via the receiving side 10a of the spray nozzle unit 100 takes place.
  • the arrangement of the closing piston 12 a in the closed position causes a reduction in the volume of the pressure chamber 14 and an increase in the volume of the low-pressure chamber 17. In this way, compensating air flows through the compensation bore 18 into the low-pressure chamber 17.
  • a geometrical configuration of the closing piston 12 can be seen which makes it possible to guide the rear-side closing piston section 12 in the insert element 21.
  • a sealing of the low-pressure chamber 17 against the water pressure on the receiving side 10 a of the spray nozzle unit 100 is ensured by the sealing element 23. If a renewed pressurization of the receiving side 10a, the water passes again through the supply channel 16 into the pressure chamber 14, and the closing piston 12 is transferred against the force of the spring element 15 in the open position.
  • FIGS. 3, 4 and 5 Another embodiment is in the FIGS. 3, 4 and 5 shown.
  • like reference numerals designate like parts as in the first Embodiment.
  • the difference to the spray nozzle unit described above is that the nozzle body 10 here consists of a nozzle connection part 10c and a main nozzle part 10d. These are connected to each other by a bore ring (spring ring) 26.
  • the nozzle opening 11 is formed, through which the closing piston 12 engages.
  • This also passes through a swirl body 27 which forms the closure means 12 and on its conical closure surface 28 has a circumferential groove 29 for receiving the nozzle seal (O-ring) 30.
  • the closing piston 12 is arranged on a nozzle piston 31, which has a guide section 34, on whose outer side a circumferential groove 35 for receiving the piston seal (O-ring) 36 is formed.
  • the guide portion 34 is supported via the compression spring 15 against the nozzle connection part 10c.
  • the locking pin 31c is arranged as a closure means via a retaining pin 31b.
  • the nozzle connection part 10c is sealed by screwing over the further piston seal (O-ring) 36 against the main nozzle part 10d.
  • a relief hole is no longer required in this embodiment. Due to the fits between the individual bodies, air can escape into the intermediate chamber 37. After installation, the nozzle body 10 can not be opened, at least not non-destructive.
  • a screw connection of the nozzle connection part 10c and the main nozzle part 10d is shown.
  • the main nozzle part 10d can also be rotated or screwed independently of the nozzle attachment part 10c. This configuration is particularly important if the nozzle must be connected to a pipeline or silo walling and should remain tight to the outside (eg because of an explosion hazard). According to the state of the art, a screw connection between the nozzle and the pipe had to be installed in order to screw both ends tight.
  • the entrance part of the nozzle body 10 is protected in the area 10a by a sieve 38 against contamination.
  • the screen 38 is fixed by a bore ring 39 so that it can not be torn off by too strong a flow.
  • the closure means 12 has a swirl body 27, the cross-section of which is shown in detail A.
  • the channels 40 in the swirl body 27 z By changing the channels 40 in the swirl body 27 z. As the number, the position of the center of gravity, the depth and width variations in the droplet size, the spray angle (beam cone) and the flow rates (K-value variations) can be achieved without the other components must be changed.
  • a nozzle seal (O-ring) 30 is provided on the closure means 12 in this embodiment.
  • O-ring By means of this O-ring, it can be achieved that, when the pressure drops, when the water supply is stopped, the nozzle body 10 remains tight to the outside, that is to say to the outside. That is, the extinguishing water only extends to the closed by the closing piston nozzle outlet opening 11 and the nozzle line, not shown, also remains filled with water.
  • This feature is very important in extinguishing systems, where it depends on very fast opening times. Because the extinguishing supply lines are constantly filled with water, there is virtually no time delay to be expected when the extinguishing system is triggered.
  • the seal 30 By introducing the seal 30 in a circumferential groove 29 in the conical closure surface 28, there are no additional delays in opening the nozzle, since no stroke is present.
  • the nozzle body 10 is also held outwardly by the closure member 27 and the pressure body 27 in cooperation with the formed as an O-ring seal 30 under the action of the spring force F of the compression spring 15.
  • the seal 30 of the swirler 27 is pressed by the spring force F of the compression spring 15, which acts on the nozzle piston 31, against the inner wall of the main nozzle part 10 d and thus the seal is held.
  • the invention is not limited in its execution to the above-mentioned preferred embodiments.

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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)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)

Claims (18)

  1. Unité de buse de pulvérisation (100) pour pulvériser des zones exposées à l'explosion dans des exploitations minières souterraines avec un corps de buse (10), qui comporte une ouverture de buse (11) pour pulvériser du liquide de pulvérisation, un moyen d'obturation (12) étant disposé dans le corps de buse (10) à travers lequel a lieu une fermeture de l'ouverture de buse (11) à l'état sans pression de l'unité de buse de pulvérisation et une chambre de compression (14) étant constituée dans le corps de buse (10) qui est limitée en mouvement par le moyen d'obturation (12), caractérisé en ce que
    le moyen d'obturation (12) comporte un conduit d'alimentation (16) à travers lequel la chambre de compression (14) peut être pressurisée avec du liquide de pulvérisation
  2. Unité de buse de pulvérisation selon la revendication 1, caractérisée en ce que le moyen d'obturation (12) est exécuté comme piston d'obturation (12) qui est logé dans le corps de buse (10) de manière mobile dans sa course le long d'un axe central (13) du corps de buse (10).
  3. Unité de buse de pulvérisation selon la revendication 2, caractérisée en ce que le moyen d'obturation (12) peut être déplacé dans sa course le long de l'axe central (13) par pressurisation de l'unité de buse de pulvérisation avec du liquide de pulvérisation entre une position de fermeture et une position d'ouverture.
  4. Unité de buse de pulvérisation selon l'une quelconque des revendications 1 à 3, caractérisée en ce que le moyen d'obturation (12) comporte une broche d'obturation (12a) pour plonger au moins en partie dans l'ouverture de buse (11) dans sa position de fermeture.
  5. Unité de buse de pulvérisation selon l'une quelconque des revendications précédentes, caractérisée en ce que la chambre de compression (14) peut être pressurisée avec du liquide de pulvérisation, la chambre de compression (14) étant disposée de telle manière que le moyen d'obturation (12) peut être transféré par pressurisation de la chambre de compression (14) de la position de fermeture à la position d'ouverture.
  6. Unité de buse de pulvérisation selon la revendication 3 ou selon l'une quelconque des revendications 4 ou 5 en liaison avec la revendication 3, caractérisée en ce qu'un élément de ressort (15) est prévu que le moyen d'obturation (12) met en prétension de ressort dans la position de fermeture.
  7. Unité de buse de pulvérisation selon l'une quelconque des revendications précédentes, caractérisée en ce que la chambre de compression (14) est en liaison de fluide avec l'ouverture de buse (11), si le moyen d'obturation (12) est libéré de la position de fermeture.
  8. Unité de buse de pulvérisation selon l'une quelconque des revendications précédentes, caractérisée en ce qu' une chambre de basse pression (17) est constituée en outre dans le corps de buse (10), qui est limitée en mouvement par le moyen d'obturation (12) sur un côté opposé à la chambre de compression (14).
  9. Unité de buse de pulvérisation selon la revendication 8, caractérisée en ce qu'un trou d'équilibrage (18) est disposé dans le corps de buse (10) qui relie la chambre de basse pression (17) au côté extérieur du corps de buse (10).
  10. Unité de buse de pulvérisation selon l'une quelconque des revendications précédentes, caractérisée en ce que la chambre de compression (14) débouche en forme de trémie dans l'ouverture de buse (11) dans la position d'ouverture du moyen d'obturation (12) les surfaces limitant la chambre de compression (14) comportant au moins en partie une structure de giration, qui permet une sortie du liquide de pulvérisation de l'ouverture de buse (11) sous un effet de giration.
  11. Unité de buse de pulvérisation selon l'une quelconque des revendications précédentes, caractérisée en ce que l'ouverture de buse (11) comporte un diamètre de 1 mm à 6 mm, de préférence un diamètre de 2 mm à 4 mm et de préférence en particulier un diamètre de 3 mm.
  12. Unité de buse de pulvérisation selon l'une quelconque des revendications précédentes, caractérisée en ce que le moyen d'obturation (12) comporte une section de tête (12b), qui est constituée pour former un jet de pulvérisation plein ou un jet de pulvérisation creux.
  13. Unité de buse de pulvérisation selon la revendication 12, caractérisée en ce que la section de tête (12b) est disposée pouvant être changée sur le moyen d'obturation (12).
  14. Unité de buse de pulvérisation selon l'une quelconque des revendications précédentes, caractérisée en ce que le corps de buse (10) est constitué pour montage dans un logement de buse d'une installation de pulvérisation qui sert à la pulvérisation d'une tête de coupe d'une haveuse sélective dans une exploitation minière souterraine.
  15. Unité de buse de pulvérisation selon l'une quelconque des revendications précédentes, caractérisée en ce que le corps de buse (10) est composé d'une pièce de raccord de buse (10c) et d'un corps de buse principal (10d) qui sont constitués démontables ou non démontables entre eux.
  16. Unité de buse de pulvérisation selon l'une quelconque des revendications précédentes, caractérisée en ce que le corps de buse (10) comporte un corps de giration (27) qui forme le moyen d'obturation (12) et des conduits (40) pour régler la taille des gouttes, l'angle de pulvérisation et le débit de l'unité de buse de pulvérisation.
  17. Unité de buse de pulvérisation selon la revendication 16, caractérisée en ce que le corps de giration (27) comporte une surface d'oburation conique (28) dans laquelle est constituée de manière périphérique une rainure (29), qui loge un joint d'étanchéité (30).
  18. Unité de buse de pulvérisation selon la revendication 17, caractérisée en ce que le joint d'étanchéité (30) est constitué comme un joint torique.
EP11703172.4A 2010-02-02 2011-02-01 Unité de buse de pulvérisation Active EP2531696B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202010001744U DE202010001744U1 (de) 2010-02-02 2010-02-02 Sprühdüseneinheit
PCT/EP2011/051343 WO2011095463A2 (fr) 2010-02-02 2011-02-01 Unité de buse de pulvérisation

Publications (2)

Publication Number Publication Date
EP2531696A2 EP2531696A2 (fr) 2012-12-12
EP2531696B1 true EP2531696B1 (fr) 2016-09-07

Family

ID=42169232

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11703172.4A Active EP2531696B1 (fr) 2010-02-02 2011-02-01 Unité de buse de pulvérisation

Country Status (6)

Country Link
US (1) US20130112438A1 (fr)
EP (1) EP2531696B1 (fr)
AU (1) AU2011212541A1 (fr)
CA (1) CA2788428A1 (fr)
DE (1) DE202010001744U1 (fr)
WO (1) WO2011095463A2 (fr)

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Publication number Priority date Publication date Assignee Title
DE102010015063A1 (de) * 2010-04-15 2011-10-20 Marco Systemanalyse Und Entwicklung Gmbh Verfahren zum Erzeugen von Nebel
CN103341453A (zh) * 2013-05-10 2013-10-09 安徽捷迅光电技术有限公司 一种高频喷阀
CN104564094B (zh) * 2014-12-18 2016-06-08 中铁工程装备集团有限公司 一种盾构机刀盘喷口防堵装置
CA3059384A1 (fr) * 2016-10-06 2018-04-12 Stefan Widhalm Dispositif et procede pour agglomerer la poussiere
WO2018065586A1 (fr) * 2016-10-06 2018-04-12 Stefan Widhalm Dispositif et procédé pour agglomérer la poussière
AT519212B1 (de) * 2016-10-06 2020-02-15 Stefan Widhalm Vorrichtung und Verfahren zum Binden von Staub
CN107309111A (zh) * 2017-07-18 2017-11-03 贵州大学 一种用于巷道爆破施工的前期喷雾降尘装置
CN111075459A (zh) * 2018-12-05 2020-04-28 黄河科技学院 盾构工程用改良剂注入装置
CN109812266B (zh) * 2019-01-30 2024-06-04 河北工程大学 一种采煤机内喷雾装置
CN112196574B (zh) * 2020-10-13 2022-04-22 中铁隧道局集团有限公司 一种用于辅助掘进机破岩的高压水射流装置
CN114651669B (zh) * 2022-03-23 2023-03-21 常熟理工学院 防堵塞喷头

Citations (3)

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Publication number Priority date Publication date Assignee Title
GB812037A (en) * 1956-04-13 1959-04-15 Roosa Vernon D Fuel injection nozzle for internal combustion engines
DE19617685A1 (de) * 1996-05-03 1997-11-13 Deutsche Forsch Luft Raumfahrt Kegelstrahldralldüse
CN101428255A (zh) * 2008-10-31 2009-05-13 马文龙 防堵喷头的设计方法

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DE2932512C2 (de) * 1979-08-10 1984-11-08 Gebr. Eickhoff Maschinenfabrik U. Eisengiesserei Mbh, 4630 Bochum Düse zum Versprühen von vorzugsweise zur Staubbekämpfung dienender Berieselungsflüssigkeit
DE3007055C2 (de) * 1980-02-26 1982-10-14 Krampe & Co Fertigung in Bergbaubedarf GmbH, Zweigniederlassung Pelkum, 4700 Hamm Sprühdüse für eine Gewinnungsmaschine des Bergbaus
DE8013540U1 (de) * 1980-05-20 1980-10-30 Bergwerksverband Gmbh, 4300 Essen Wasserduese mit selbstreinigungsvorrichtung
GB2190940B (en) * 1986-05-28 1989-12-13 G D M & C Ltd Mineral mining apparatus
DE19851620C2 (de) 1998-11-09 2003-02-20 Heitkamp Gmbh Bau Wasser-Nebel-Bedüsungssystem, insbesondere für Teilschnittmaschinen im Streckenvortrieb

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB812037A (en) * 1956-04-13 1959-04-15 Roosa Vernon D Fuel injection nozzle for internal combustion engines
DE19617685A1 (de) * 1996-05-03 1997-11-13 Deutsche Forsch Luft Raumfahrt Kegelstrahldralldüse
CN101428255A (zh) * 2008-10-31 2009-05-13 马文龙 防堵喷头的设计方法

Also Published As

Publication number Publication date
WO2011095463A2 (fr) 2011-08-11
EP2531696A2 (fr) 2012-12-12
US20130112438A1 (en) 2013-05-09
WO2011095463A3 (fr) 2012-06-07
DE202010001744U1 (de) 2010-05-12
AU2011212541A1 (en) 2012-09-20
CA2788428A1 (fr) 2011-08-11

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