US3603644A - Mining ventilation apparatus and method - Google Patents
Mining ventilation apparatus and method Download PDFInfo
- Publication number
- US3603644A US3603644A US816224A US3603644DA US3603644A US 3603644 A US3603644 A US 3603644A US 816224 A US816224 A US 816224A US 3603644D A US3603644D A US 3603644DA US 3603644 A US3603644 A US 3603644A
- Authority
- US
- United States
- Prior art keywords
- air
- flow
- passageway
- face
- specified
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000005065 mining Methods 0.000 title claims description 31
- 238000009423 ventilation Methods 0.000 title description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 6
- 239000011707 mineral Substances 0.000 claims description 6
- 230000001154 acute effect Effects 0.000 claims description 5
- 238000010008 shearing Methods 0.000 claims description 4
- 239000000428 dust Substances 0.000 description 16
- 239000007789 gas Substances 0.000 description 13
- 230000008901 benefit Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 101100334009 Caenorhabditis elegans rib-2 gene Proteins 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 230000003190 augmentative effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Images
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
- E21C35/223—Equipment associated with mining machines for sucking dust-laden air from the cutting area, with or without cleaning of the air
Definitions
- ABSTRACT A method and apparatus for fully ventilating the 98/50, 299/67 face of a mined area by means of an auxiliary flow of air which [51] Int. E2lc 35/22 deflects a normal flow of ventilating air such that a relatively [50] Field of 299/12, 81; greater area of a mine face is contacted by a passing flow of 98/50 ventilating air.
- the continuous mining machine of this invention is of the type having one or more rotary cutter heads supported by a vertically movable boom mounted ona mobile base for movement along a mine floor into contact with a mining face developed in a mineral vein.
- Such mining machines are well known in the art and the particular machine to which the structure and method of the instant inventionapply is more fully shown and described in copending application Ser. No. 786,650 filed Dec. 24, 1968 (Teeter) which application is assigned to the same assignee as is this application.
- the object of the present invention is to provide a current of auxiliary air directed at the point of greatest dust production to augment the normal air flow which by a suitable partitioning of the mined passageway is constrained to travel toward the face along one part of the passageway, across the mine face and outwardly along the mine passage on the side of the machine away from the operator to reduce the dust and gas hazard normally present in the use of continuous miners.
- the ducts are integral with the boom once the aiming of the outlet mouth has been accomplished adjustment of the boom up and down carries the ducts with it and keeps the outlet adjustment proper for aiming the current of air at the point of greatest gas liberation and dust production;
- FIG. 1 is a general three-dimensional view of a mining machine constructed according to the principles of this invention
- FIG. 2 is a top plan view ofthe mining machine of FIG. 1;
- FIG. 3 is a side elevational view of the mining machine of FIGS. 1 and 2;
- FIG. 4 is a sectional view taken substantially on line 44 of FIG. 2 looking in the direction indicated by the arrows;
- FIG. 5 is a sectional view taken substantially on line 5-5 of FIG. 2 and looking in the direction of the arrows.
- FIG. 1 there is shown a mining machine generally indicated at having a cutter head drum 24 rotatably mounted on a vertically movable boom 18 which is pivotally mounted on a main frame 16 in turn supported and rendered movable over a surface by a pair of crawler assemblies 14 in a manner well known in the art.
- the main frame 16 also supports an elongated, centrally located flight conveyor 30 and a conventional loader arm-type gathering head 26 all as more fully shown and described in the above cited copending application of Teeter.
- the cutter support boom 18 is pivotally supported as at 38 and pivotable about a horizontal axis by the action of fluid operated extensible jacks 32 while the gathering head is similarly pivotable in the vertical direction by a pair of suitable jacks 34.
- a ducted fan and motor assembly 27 Centrally mounted in a rearward portion of the boom 18 is a ducted fan and motor assembly 27 which may be of any type suitable for moving large quantities of air at moderate velocities.
- the housing of the fan assembly 27 is fitted to and communicates in substantially airtight relationship with a generally Y-shaped rectangular air duct 28 having rightand left-hand branches 36 and 37, respectively, suitably sized having a cross-sectional area approximately twice that of the fan to conduct the air delivered by the fan and motor assembly 27 at a moderate velocity through either of two branches 36 and 37 of the Y-duct 28.
- branches of 36 and 37 of the Y-duct 28 extend diagonally forwardly and outwardly from the front end of the fan assembly 27 through the interior of the boom 18 with the outermost ends of the branches 36 and 37 protruding outwardly beyond the sides of the boom 18.
- a substantially full cross section opening 29 to deliver the air from the fan and motor assembly 27.
- a substantially rectangular valve of damper element 35 is positioned across the base of the left-hand branch 37 to stop the flow of air therethrough and direct all of the airflow into the right branch as hereinafter explained.
- FIG. 1 a substantially rectangular valve of damper element 35 is positioned across the base of the left-hand branch 37 to stop the flow of air therethrough and direct all of the airflow into the right branch as hereinafter explained.
- the damper 35 is secured in position by a single retaining element such as a capscrew 39 located somewhat to the right of the longitudinal centerline of the boom with the damper 35 extending diagonally rearwardly across that centerline to mate with the rear side of the left branch.
- a threaded bore 40 is provided in a position analogous to that of the capscrew 39 but to the left of the boom centerline.
- the cutter head drum 24 supports helical conveyor members on which are mounted suitable mineral cutting bits (not shown) which when operating travel in paths collectively forming an outline shown as a bit path 25 to cut mineral in a well-known manner.
- the particular machine 10 hereinabove described is brought to a mineral face by operation of the crawler assemblies 14 in a well'known manner and with the boom raised and the cutter head drum rotating in a clockwise direction as seen in FIG. 3 the miner It) begins to form a new face as at 23 (see FIG. 3).
- the machine is moved forward approximately half the diameter of the bit path 25 and the boom is then gradually lowered with the formation of a face 23 somewhat as seen in FIG. 3 with a substantially horizontal portion 23' being continuously formed and continuously cut away.
- This face portion 23 is subject to the highest rate of cutting action of any part of the face area.
- the air then would generally move toward the face along the mine passageway and then away from the face behind the brattice or as otherwise described; the air could also be taken away from the face by a large duct continuously extended to keep the intake end of it ahead of the operator to prevent dust from falling on the operator; to continue with the method of this invention; with the normal supply flow of air along the passageway toward the face the method of this invention contemplates discharging an auxiliary air stream at an acute angle to and in concurrent flow with the normal supply flow which air stream will be an input flow of sufficient volume and velocity to deflect the supply flow over portions of the face not normally contacted by such supply flow, particularly including the corner of the face which normally would be a dead air space without benefit of the gas dilution and dust removal of the normal flow of air over other portions of the face; further steps of the method could be included in varying the direction of the discharge of the auxiliary air stream from a high angle at the beginning of the cutting cycle (sumping portion) and continuously varying the angles from that high angle
- a mining machine of the type having a cutter head mounted on the free forward end of an elongated boom and which cutter head extends laterally outwardly from each side of said boom and is movable in conjunction with said boom across a face of a bedded deposit of mineral, the improvement comprising: air conducting passageway means carried by said boom and movable therewith; said passageway means having a discharge opening located to discharge air outwardly of one side of said boom and forwardly towards the end of said cutterhead in closest proximity thereto; and means for causing air flow through said passageway means.
- passageway means includes a second discharge opening located to discharge air outwardly of the other side of said boom and forwardly towards the other end of said cutterhead.
- a mining machine as specified in claim 2 additionally comprising flow control means cooperable with said passageway means to control the discharge of air through said discharge openings.
- passageway means includes a Y-shaped air duct and said discharge openings are at the ends of respective furcations of said duct opposite the juncture ends thereof.
- the method of ventilating the mine face during the operation of a mining machine within a mine passageway comprising: continuously providing along one side of a mine passageway a first flow of air toward a mine face located at the inner end of said passageway; continuously maintaining flow of at least a portion of said first flow towards the intersection of said one side and said face by directing an auxiliary flow of air at an acute angle to and in concurrent flow with said first flow; and thereafter withdrawing all of said air flows across said face and outwardly of said passageway.
- a mining machine as specified in claim 1 additionally comprising flow control means cooperable with said passageway means to control the discharge of air through said discharge opening.
- a method of ventilating as specified in claim 8 including, prior to said withdrawing, the additional steps of: discontinuing said first flow of air; selectively providing a second flow of air toward said face along the other side of said passageway; and selectively directing said auxiliary flow of air at an acute angle to and in concurrent flow with said second flow.
Landscapes
- 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)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
Description
Claims (12)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US81622469A | 1969-04-15 | 1969-04-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3603644A true US3603644A (en) | 1971-09-07 |
Family
ID=25220005
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US816224A Expired - Lifetime US3603644A (en) | 1969-04-15 | 1969-04-15 | Mining ventilation apparatus and method |
Country Status (5)
Country | Link |
---|---|
US (1) | US3603644A (en) |
JP (1) | JPS4919481B1 (en) |
DE (1) | DE2017892A1 (en) |
FR (1) | FR2043373A5 (en) |
GB (1) | GB1291734A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3712678A (en) * | 1971-03-18 | 1973-01-23 | Lee Noise Co | Mining machine having dust collecting means |
US3904246A (en) * | 1973-02-09 | 1975-09-09 | Coal Industry Patents Ltd | Rotary cutter heads for mineral mining machines |
US4076315A (en) * | 1971-08-05 | 1978-02-28 | Rexnord, Inc. | Dust abatement device and method of dust abatement |
AT377329B (en) * | 1982-12-23 | 1985-03-11 | Voest Alpine Ag | DRIVE ARRANGEMENT FOR THE LOADING ARMS OF A LOADING LAMP FOR DRIVING OR RECOVERY MACHINES |
US4531784A (en) * | 1983-03-17 | 1985-07-30 | National Mine Service Company | Mining machine with dust collector apparatus |
WO1999046479A1 (en) * | 1998-03-10 | 1999-09-16 | Thiess Contractors Pty. Limited | Temporary ventilation system for mining or tunnelling |
US9587491B2 (en) * | 2010-09-22 | 2017-03-07 | Joy Mm Delaware, Inc. | Guidance system for a mining machine |
CN110145355A (en) * | 2019-06-14 | 2019-08-20 | 华北理工大学 | A kind of rubber conveyer fire smoke flow drainage device and method |
RU2716765C2 (en) * | 2014-12-12 | 2020-03-16 | ДЖОЙ ГЛОБАЛ АНДЕРГРАУНД МАЙНИНГ ЭлЭлСи | Mining machine guidance system |
US10900357B2 (en) | 2013-05-01 | 2021-01-26 | University Of Kentucky Research Foundation | Blowing curtain face ventilation system for extended cut mining using passive regulator |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4062595A (en) * | 1976-10-15 | 1977-12-13 | The United States Of America As Represented By The Secretary Of The Interior | Automatic face transfer linear cutting rotary head continuous mining machine and method |
JPH0486617U (en) * | 1990-11-16 | 1992-07-28 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2749105A (en) * | 1949-07-05 | 1956-06-05 | Joy Mfg Co | Dust allaying means for continuous mining apparatus |
US3333896A (en) * | 1965-04-29 | 1967-08-01 | Carbon Fuel Company | Method and apparatus for rock dusting during coal mining operations |
US3387889A (en) * | 1966-11-03 | 1968-06-11 | Stanley C. Ziemba | Coal dust removal and conveyance system |
-
1969
- 1969-04-15 US US816224A patent/US3603644A/en not_active Expired - Lifetime
-
1970
- 1970-04-06 GB GB06253/70A patent/GB1291734A/en not_active Expired
- 1970-04-14 DE DE19702017892 patent/DE2017892A1/en active Pending
- 1970-04-15 JP JP45032276A patent/JPS4919481B1/ja active Pending
- 1970-04-15 FR FR7013572A patent/FR2043373A5/fr not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2749105A (en) * | 1949-07-05 | 1956-06-05 | Joy Mfg Co | Dust allaying means for continuous mining apparatus |
US3333896A (en) * | 1965-04-29 | 1967-08-01 | Carbon Fuel Company | Method and apparatus for rock dusting during coal mining operations |
US3387889A (en) * | 1966-11-03 | 1968-06-11 | Stanley C. Ziemba | Coal dust removal and conveyance system |
Non-Patent Citations (1)
Title |
---|
Face Ventilation With Continuous Mining by Paul C. Lingo, Mechanization, Sept. 1961, pages 39 43 * |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3712678A (en) * | 1971-03-18 | 1973-01-23 | Lee Noise Co | Mining machine having dust collecting means |
US4076315A (en) * | 1971-08-05 | 1978-02-28 | Rexnord, Inc. | Dust abatement device and method of dust abatement |
US3904246A (en) * | 1973-02-09 | 1975-09-09 | Coal Industry Patents Ltd | Rotary cutter heads for mineral mining machines |
AT377329B (en) * | 1982-12-23 | 1985-03-11 | Voest Alpine Ag | DRIVE ARRANGEMENT FOR THE LOADING ARMS OF A LOADING LAMP FOR DRIVING OR RECOVERY MACHINES |
US4531784A (en) * | 1983-03-17 | 1985-07-30 | National Mine Service Company | Mining machine with dust collector apparatus |
WO1999046479A1 (en) * | 1998-03-10 | 1999-09-16 | Thiess Contractors Pty. Limited | Temporary ventilation system for mining or tunnelling |
US9587491B2 (en) * | 2010-09-22 | 2017-03-07 | Joy Mm Delaware, Inc. | Guidance system for a mining machine |
US10900357B2 (en) | 2013-05-01 | 2021-01-26 | University Of Kentucky Research Foundation | Blowing curtain face ventilation system for extended cut mining using passive regulator |
RU2716765C2 (en) * | 2014-12-12 | 2020-03-16 | ДЖОЙ ГЛОБАЛ АНДЕРГРАУНД МАЙНИНГ ЭлЭлСи | Mining machine guidance system |
CN110145355A (en) * | 2019-06-14 | 2019-08-20 | 华北理工大学 | A kind of rubber conveyer fire smoke flow drainage device and method |
CN110145355B (en) * | 2019-06-14 | 2024-05-17 | 华北理工大学 | Fire smoke flow drainage device and method for belt conveyor |
Also Published As
Publication number | Publication date |
---|---|
JPS4919481B1 (en) | 1974-05-17 |
FR2043373A5 (en) | 1971-02-12 |
GB1291734A (en) | 1972-10-04 |
DE2017892A1 (en) | 1970-11-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: JOY TECHNOLOGIES INC., A CORP. OF DE.,PENNSYLVANIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:JOY MANUFACTURING COMPANY, A CORP. OF PA;REEL/FRAME:004880/0430 Effective date: 19870529 Owner name: JOY TECHNOLOGIES INC., 301 GRANT STREET, PITTSBURG Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:JOY MANUFACTURING COMPANY, A CORP. OF PA;REEL/FRAME:004880/0430 Effective date: 19870529 Owner name: JOY MANUFACTURING COMPANY, 535 SMITHFIELD STREET, Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:MCCLEERY, HAROLD, C.,;REEL/FRAME:004718/0987 Effective date: 19690402 |
|
AS | Assignment |
Owner name: JOY TECHNOLOGIES INC., PENNSYLVANIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:JOY MANUFACTURING COMPANY, A CORP. OF PA;REEL/FRAME:004747/0261 Effective date: 19870626 Owner name: CITIBANK, N.A.,NEW YORK Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:JOY TECHNOLOGIES INC., 301 GRANT STREET, PITTSBURGH, PA 15219, A DE CORP.;REEL/FRAME:004846/0025 Effective date: 19870626 Owner name: CITIBANK, N.A., 641 LEXINGTON AVENUE, NEW YORK, NE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:JOY TECHNOLOGIES INC., 301 GRANT STREET, PITTSBURGH, PA 15219, A DE CORP.;REEL/FRAME:004846/0025 Effective date: 19870626 Owner name: JOY TECHNOLOGIES INC., 301 GRANT STREET, PITTSBURG Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:JOY MANUFACTURING COMPANY, A CORP. OF PA;REEL/FRAME:004747/0261 Effective date: 19870626 |
|
AS | Assignment |
Owner name: JOY MANUFACTURING COMPANY,STATELESS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:JOY TECHNOLOGIES INCL., (A DE CORP.);REEL/FRAME:004827/0367 Effective date: 19870626 Owner name: JOY MANUFACTURING COMPANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST. EFFECTIVE DATE;ASSIGNOR:JOY TECHNOLOGIES INCL., (A DE CORP.);REEL/FRAME:004827/0367 Effective date: 19870626 |
|
AS | Assignment |
Owner name: CITIBANK, N.A., 641 LEXINGTON AVENUE, NEW YORK, NE Free format text: SECURITY INTEREST;ASSIGNOR:JOY TECHNOLOGIES INC.,;REEL/FRAME:004936/0730 Effective date: 19870626 |
|
AS | Assignment |
Owner name: JOY TECHNOLOGIES INC., A CORP OF DE, PENNSYLVANIA Free format text: RELEASED BY SECURED PARTY;ASSIGNORS:MC CARTNEY, DEREK L.;ARCHIBALD, JOHN H.;REEL/FRAME:005237/0152 Effective date: 19870626 |
|
AS | Assignment |
Owner name: JOY TECHNOLOGIES, INC., A CORP OF DE Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:CITIBANK N.A.;REEL/FRAME:005237/0187 Effective date: 19891011 |