EP0079260B1 - Entstauber - Google Patents

Entstauber Download PDF

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Publication number
EP0079260B1
EP0079260B1 EP82401909A EP82401909A EP0079260B1 EP 0079260 B1 EP0079260 B1 EP 0079260B1 EP 82401909 A EP82401909 A EP 82401909A EP 82401909 A EP82401909 A EP 82401909A EP 0079260 B1 EP0079260 B1 EP 0079260B1
Authority
EP
European Patent Office
Prior art keywords
dust
air
filtered air
polluted
dust collector
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
Application number
EP82401909A
Other languages
English (en)
French (fr)
Other versions
EP0079260A1 (de
Inventor
Alfred M. Prieto
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.)
Houilleres De Bassin Du Centre Et Du Midi Public A Caractere Industriel Et Commercial Ets
Prieto Alfred
Original Assignee
Houilleres De Bassin Du Centre Et Du Midi Public A Caractere Industriel Et Commercial Ets
Prieto Alfred
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 Houilleres De Bassin Du Centre Et Du Midi Public A Caractere Industriel Et Commercial Ets, Prieto Alfred filed Critical Houilleres De Bassin Du Centre Et Du Midi Public A Caractere Industriel Et Commercial Ets
Priority to AT82401909T priority Critical patent/ATE11170T1/de
Publication of EP0079260A1 publication Critical patent/EP0079260A1/de
Application granted granted Critical
Publication of EP0079260B1 publication Critical patent/EP0079260B1/de
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
    • E21F5/20—Drawing-off or depositing 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
    • E21C35/223—Equipment associated with mining machines for sucking dust-laden air from the cutting area, with or without cleaning of the air

Definitions

  • the present invention relates to a dust collector.
  • It relates more particularly to an apparatus which makes it possible both to rid the maximum of harmful dust contained in the environment of the personnel working in the digging of underground galleries and to maintain in a healthy atmosphere a large part of the mining sites.
  • digging machines which advance in the galleries by cutting the rocks.
  • These machines generally consist of a rotating head provided at its end with sharp elements which penetrate into the rocks.
  • dust removal devices have been proposed which are placed near the advancement front of the site.
  • These dust collectors of the suction type are most often made up of devices which suck in polluted air and reject it free of dust.
  • dry process dust collectors Depending on the nature of the filtration devices with which they are provided, they can be divided into two categories: dry process dust collectors and wet process dust collectors.
  • Wet dust collectors generally consist of five parts arranged on the same longitudinal axis: a stale air suction device disposed on the side of the cutting face, a venturi provided with water sprayers into which the device opens.
  • the present invention relates to a dust collector carried by a digging machine and consisting of a device for extracting stale air, a purification device, a device for moving purified air and a device for discharge of purified air as known for example from patent US-A-42 89 509.
  • the dust collector is characterized in that the device for discharging the purified air consists of an enclosure having the shape of a rectangular parallelepiped disposed behind the stale air suction device and provided on each lower and upper face with two rectilinear slots situated in two planes perpendicular to the axis of the dust collector, the device for displacing the purified air consisting of a wheel centrifugal which causes a 180 ° change in the direction of the air.
  • FIG. 1 The description of the various elements contained in FIG. 1 makes it possible to locate the arrangement of the dust collector, object of the invention, on a digging machine in a coal mine.
  • the mining site is delimited by the advancement front 1, the sides 2 and 3.
  • the digging machine 4 (shown in dotted lines) is provided with a cutting head 5 which works on the advancement front 1: the the assembly is moved using the conveyor 6.
  • the dust collector 7 according to the invention is carried by the digging machine: it is arranged in the zone where the maximum amount of dust is produced, that is to say at the heart of the mining site. In FIG. 1, it is shown diagrammatically by three suction outlets 8 and by the delivery system 12.
  • the purified air delivery device 12 is described in more detail in FIG. 3. It is formed of the rectangular enclosure 25 provided with rectilinear slots 26 arranged on each lower and upper face in a plane perpendicular to the axis of the dust collector. This enclosure is arranged behind the suction ports 8 for stale air.
  • This device consists of a centrifugal wheel 17 formed of radial, oblique and concave blades 15. The shape of these blades is such that the air coming from the head of the dust collector is discharged in the direction of this same head of the dust collector, that is to say on the side of the device for discharging the purified air.
  • These blades are concave, the concavity being directed on the air intake side so that the rotational movement of the wheel causes a 180 ° change in the direction of the air.
  • a peripheral channel 18 in the form of a spiral is arranged all around the centriguge wheel 17: this channel has in the lower part a rentangular opening 19 in which wet dust is collected (see FIG. 2).
  • the dust collector object of the invention comprises two helical wheels consisting of blades (13 and 14 in Figure 2) contained in the cylindrical annular space 16 ( Figure 3). These helical wheels accelerate the air speed.
  • the assembly 9 of the helical wheels 13 and 14 and of the centrifugal wheel 17 are mounted in series on the same shaft: the movement of these wheels is ensured by a motor 20.
  • the venturi 10 is a flat venturi, it is provided at the neck with a water inlet 21 and it is provided internally with horizontal channels, two lateral 22 and 23 and a central channel 24. These channels are separated by boxes stuffed with Rockwool.
  • the silencer 11 in the extension of the venturi 10 also includes three vertical channels also separated by boxes stuffed with rock wool.
  • the suction device 8 communicates with the central channel of the silencer 24.
  • the side channels 22 and 23 terminate.
  • the dust-laden air is sucked in by the three external outlets of the stale air suction device 8 and then passes through the central channel 24 of the silencer 11 before entering the venturi 10 where it crashes on the jet of water 2 which arrives at the venturi neck 10, against the current.
  • This shock of the dusty air stream and the water causes the water to spray, which causes the dust.
  • the dust-laden drops of water pass through the venturi undergoing an acceleration which goes from 25 to more than 100 meters / second: this acceleration also causes intimate contact with the gas stream charged with dust and the stream of water droplets to give rise to a mist saturated with dust.
  • This mist then passes through the helical wheels (the blades 13 and 14 are shown in FIG. 2) then through the centrifugal wheel 17. It is then centrifuged and the drops of water laden with dust are then projected into the spiral channel 18 The sludge consisting of wet dust is collected at the lower part 19 of the channel 18.
  • the purified air is discharged and passes through the lateral channels 22 and 23 of the silencer to reach the discharge device 25 where it leaves in the form of blades. by exits 27, 28, 29 and 30, thus creating curtains to separate the working face and the back of the site.
  • the dust collector according to the invention has the advantage of not requiring a special and particular implementation since it is carried by the digging machine thanks to the device for discharging purified air. Separation curtains are obtained, consisting of purified air and located between the polluted area and the rear of the site, which makes it possible to completely isolate the part of the polluted site and therefore to keep the rest of the site in a healthy atmosphere. . In addition, this dust collector creating real curtains of separation between the polluted air zone and the zone of healthy atmosphere, it does not require a significant aeromotor power to evacuate the dust effectively.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Separating Particles In Gases By Inertia (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Prevention Of Fouling (AREA)

Claims (2)

1. Entstauber (7), der von einer Vortriebsmaschine getragen wird und von einer Ansaugeinrichtung (8) für verbrauchte Luft, einer Reinigungseinrichtung (10), einer Einrichtung (17) für den Transport gereinigter Luft, und einer Ausstoßeinrichtung (12) für gereinigte Luft gebildet ist, dadurch gekennzeichnet, daß die Ausstoßeinrichtung für die gereinigte Luft von einer Einfassung in der Form eines rechtwinkeligen Parallelepipeds (25) gebildet ist, das hinter der Ansaugeinrichtung (8) für verbrauchte Luft angeordnet und sowohl an der Unterseite als auch an der Oberseite mit zwei geradlinigen Schlitzen (26) versehen ist, die in zwei zur Achse des Entstaubers senkrechten Ebenen liegen, wobei die Einrichtung (17) für den Transport der gereinigten Luft von einem Zentrifugalrad (17) gebildet ist, das eine Luftrichtungsänderung von 180° bewirkt.
2. Entstauber nach Anspruch 1, dadurch gekennzeichnet, daß die Einrichtung (17) für den Transport der gereinigten Luft aus einem von schrägen, konkaven Radialflügeln (15) gebildeten Zentrifugalrad (17) besteht.
EP82401909A 1981-11-10 1982-10-19 Entstauber Expired EP0079260B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82401909T ATE11170T1 (de) 1981-11-10 1982-10-19 Entstauber.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8121041A FR2516163A1 (fr) 1981-11-10 1981-11-10 Appareil depoussiereur
FR8121041 1981-11-10

Publications (2)

Publication Number Publication Date
EP0079260A1 EP0079260A1 (de) 1983-05-18
EP0079260B1 true EP0079260B1 (de) 1985-01-09

Family

ID=9263872

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82401909A Expired EP0079260B1 (de) 1981-11-10 1982-10-19 Entstauber

Country Status (4)

Country Link
EP (1) EP0079260B1 (de)
AT (1) ATE11170T1 (de)
DE (1) DE3261855D1 (de)
FR (1) FR2516163A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT404284B (de) * 1994-03-15 1998-10-27 Voest Alpine Bergtechnik Trockenentstauber
DE102006017673B4 (de) * 2005-05-27 2015-10-15 Cft Gmbh Compact Filter Technic Anlage zur Bewetterung von Streckenvortrieben mit Vortriebsmaschine
CN102174895A (zh) * 2011-02-25 2011-09-07 湖南科技大学 一种矿山机掘工作面集尘和除尘装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT346821B (de) * 1976-05-21 1978-11-27 Voest Ag Einrichtung zum abscheiden von staubfoermigen teilen aus einem luftstrom
US4289509A (en) * 1978-08-04 1981-09-15 Hoelter Heinz Dust aspirating arrangement

Also Published As

Publication number Publication date
EP0079260A1 (de) 1983-05-18
DE3261855D1 (en) 1985-02-21
ATE11170T1 (de) 1985-01-15
FR2516163B1 (de) 1983-12-23
FR2516163A1 (fr) 1983-05-13

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