GB1238438A - - Google Patents

Info

Publication number
GB1238438A
GB1238438A GB1238438DA GB1238438A GB 1238438 A GB1238438 A GB 1238438A GB 1238438D A GB1238438D A GB 1238438DA GB 1238438 A GB1238438 A GB 1238438A
Authority
GB
United Kingdom
Prior art keywords
electrodes
tunnel
high potential
particles
dust
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
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 filed Critical
Publication of GB1238438A publication Critical patent/GB1238438A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/38—Particle charging or ionising stations, e.g. using electric discharge, radioactive radiation or flames
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/40—Electrode constructions
    • B03C3/41—Ionising-electrodes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C2201/00—Details of magnetic or electrostatic separation
    • B03C2201/06—Ionising electrode being a needle

Landscapes

  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Electrostatic Separation (AREA)

Abstract

1,238,438. Electrostatic separation. NIPPON KOGEI KOGYO CO., Ltd. 14 May, 1970 [29 Dec., 1969], No. 23494/70. Heading B2J. [Also in Division E1] Particles of floating dust are removed from a tunnel excavation by providing a plurality of electrodes positioned within the tunnel and applying a high potential to the electrodes so as to charge the particles within the tunnel by forming an electric field between the inner wall of the tunnel and the electrodes. As shown in Fig. 2 and 4 electrodes 8 are suspended from the top portion of the arch posts 2 which are provided between the excavating portion 3 and a shield plate 5. The electrodes are connected through a high potential cable 7 to a source of high potential 6. If a negative high potential with respect to the ground is applied to the electrodes, negative ions are generated which force the dust particles onto the walls of the tunnel. A device may be provided for shutting off the electrical circuit should a short circuit occur by an electrode falling to the ground. In a modification means are provided for equidistantly spacing the electrodes comprising a plurality of resilient and flexible tubes of high molecular compound through which the electrodes are disposed and which have the end portions thereof exposed. The invention may also be used during the power excavation of the tunnel by providing an electrode on the excavator so as to form an electric field within the tunnel in order to remove the particles of dust covering the excavator when it is working.
GB1238438D 1969-12-29 1970-05-14 Expired GB1238438A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP127169 1969-12-29

Publications (1)

Publication Number Publication Date
GB1238438A true GB1238438A (en) 1971-07-07

Family

ID=11496777

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1238438D Expired GB1238438A (en) 1969-12-29 1970-05-14

Country Status (2)

Country Link
US (1) US3695001A (en)
GB (1) GB1238438A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LT3554B (en) 1989-08-25 1995-12-27 Airtunnel Ltd Oy Procedure and apparatus for the purification of air flue gases or equivalent
US5578112A (en) * 1995-06-01 1996-11-26 999520 Ontario Limited Modular and low power ionizer
WO2004098780A1 (en) * 2003-05-07 2004-11-18 Humberto Alexander Cravero Electronic purification of air in tunnels
CN104807962A (en) * 2015-04-21 2015-07-29 浙江科技学院 Composite moveable real-time monitoring device for tunnel blasting gas and dust
WO2020113269A1 (en) * 2018-12-04 2020-06-11 Puriscience Pty Ltd Electronic purification of air in mines

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH568533A5 (en) * 1973-06-16 1975-10-31 Berckheim Graf Von
US7052531B2 (en) * 2003-03-31 2006-05-30 Takashi Kishioka Local cleaning system for constructing clean shielded space with no need for dedicated partition wall, using charged air shower unit providing ion wind and local exhaust device
CN104677419B (en) * 2015-01-29 2017-07-21 浙江科技学院 The quick monitoring device of Tunnel Blasting gas dirt of comprehensive quantification
CN113588190B (en) * 2021-10-08 2022-02-25 四川藏区高速公路有限责任公司 Vibration response test device for blasting construction to adjacent existing tunnel

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE581067C (en) * 1933-07-20 Alfred Tueffert Extraction of the mine gas pockets in the ridge breakouts of the routes
US342548A (en) * 1886-05-25 Alfred osten walker
DE519310C (en) * 1931-02-26 Wilhelm Oberfohren Device for removing dust in the mine
US895729A (en) * 1907-07-09 1908-08-11 Int Precipitation Co Art of separating suspended particles from gaseous bodies.
US2000017A (en) * 1930-04-05 1935-05-07 Siemens Ag Electrical cleaning of fluids
US1978426A (en) * 1931-08-08 1934-10-30 Int Precipitation Co Apparatus for electrical treatment of fluids
US1959374A (en) * 1932-10-01 1934-05-22 Int Precipitation Co Method and apparatus for electrical precipitation
US1982470A (en) * 1933-05-18 1934-11-27 Franks Wilbur Rounding Method of cleaning air in enclosed spaces
US2097233A (en) * 1934-03-31 1937-10-26 Research Corp Electrical deposition in pattern form
US2102006A (en) * 1937-03-23 1937-12-14 John E Jones Rock dust barrier
US2336625A (en) * 1940-12-02 1943-12-14 John L Milton Dust collector
CH337178A (en) * 1955-04-07 1959-03-31 Eei Etabl Electrovit Internati Room electrostatic filter system for air purification on an electrostatic basis
US2868318A (en) * 1955-06-23 1959-01-13 William A Perkins Collection of airborne material by electrostatic precipitation
US3417302A (en) * 1962-02-09 1968-12-17 Holger George Lueder Apparatus for the production of unipolar ions in the air of a room
DE1276580B (en) * 1963-04-24 1968-09-05 Bergwerksverband Gmbh Procedure for removing dangerous gas layers in routes and rooms of the mine
DE1604192B1 (en) * 1966-02-02 1971-02-04 Alfred Hornig Device for generating electric fields
DE1679493B1 (en) * 1967-05-02 1970-06-04 Berckheim Graf Von Arrangement for the electrical air conditioning of rooms in buildings and vehicles

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LT3554B (en) 1989-08-25 1995-12-27 Airtunnel Ltd Oy Procedure and apparatus for the purification of air flue gases or equivalent
US6287368B1 (en) 1989-08-25 2001-09-11 Oy Airtunnel Ltd. Apparatus for the purification of air flue gases, or equivalent
US5578112A (en) * 1995-06-01 1996-11-26 999520 Ontario Limited Modular and low power ionizer
US6056808A (en) * 1995-06-01 2000-05-02 Dkw International Inc. Modular and low power ionizer
WO2004098780A1 (en) * 2003-05-07 2004-11-18 Humberto Alexander Cravero Electronic purification of air in tunnels
CN104807962A (en) * 2015-04-21 2015-07-29 浙江科技学院 Composite moveable real-time monitoring device for tunnel blasting gas and dust
WO2020113269A1 (en) * 2018-12-04 2020-06-11 Puriscience Pty Ltd Electronic purification of air in mines

Also Published As

Publication number Publication date
US3695001A (en) 1972-10-03

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years