US2943890A - Feed apparatus with lock chambers for hydraulic conveying - Google Patents

Feed apparatus with lock chambers for hydraulic conveying Download PDF

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Publication number
US2943890A
US2943890A US698509A US69850957A US2943890A US 2943890 A US2943890 A US 2943890A US 698509 A US698509 A US 698509A US 69850957 A US69850957 A US 69850957A US 2943890 A US2943890 A US 2943890A
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US
United States
Prior art keywords
chamber
valve
piston
water
pressure
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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
Application number
US698509A
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English (en)
Inventor
Hrabovszky Oszkar
Panyi Levente
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.)
Licencia Talalmanyokat Ertekesito Vallalat
Original Assignee
Licencia Talalmanyokat Ertekesito Vallalat
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.)
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Application filed by Licencia Talalmanyokat Ertekesito Vallalat filed Critical Licencia Talalmanyokat Ertekesito Vallalat
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Publication of US2943890A publication Critical patent/US2943890A/en
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Expired - Lifetime 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
    • E21F13/00—Transport specially adapted to underground conditions
    • E21F13/04—Transport of mined material in gravity inclines; in staple or inclined shafts
    • E21F13/042—Vertical hydraulic conveying of coal

Definitions

  • the invention is primarily intended for use in mining, where the mined raw material is mainly conveyed up through vertical shafts by means of shaft winding engines.
  • the disadvantage of this method consists in that a good deal of dead weight in the form of cages, tubs etc. has to be moved together with the conveyed useful weight, thus requiring large shaft cross-sections, and requiring the services of a considerable amount of personnel.
  • the invention relates to a feed apparatus with lock chambers wherein the mixture is drawn by suction from the quantity regulating hopper into the pressure chamber by means of a piston cylinder during the period of charging the ore, coal or other materials. In this way the quantity regulation of the solid material is accelerated.
  • upper cylinder is also used for accelerating the solid material into the high-pressure stream of water which forces the mixture out of the pressure chamber into the mixing chamber.
  • the invention also proposes using such connecting means as to connect on the one hand the lower end of the cylinder to the pressure chamber and on the other hand the upper end by means of a change-over valve, either to the part of the conveying pipe in which only pure water flows, or to the feed chamber, for the purpose of providing the same pressure simultaneously at both sides of the piston whilst the cylinder is in operation.
  • the aforesaid piston cylinder takes from the pure-water conveying pipe a quantity of water equal to the volume of solid material introduced into the conveying pipe, in order that the introduction of material into the conveying pipe does not produce any pressure difference.
  • the invention is also characterised in that the feed apparatus has .a feed hopper with double walls which is equipped with means for producing an overflow of pure water equal to the measured volume of coal, ore or like material.
  • the invention i.e. the feed apparatus can also be so constructed that the accelerating piston cylinder feeds.
  • the feed installation can be provided with hydraulically operated vflves for shutting off the lock chambers.
  • a further development of the invention provides between the lock chambers, valves for pressure equalisation and air evacuation, and which are also used for the flow of water for closing or opening the aforesaid valves hydraulically.
  • valves which are movable hydraulically or mechanically on tracks.
  • Figure 1 is a longitudinal sectional view of the apparatus
  • Figure 2 is a cross-sectional view on AA of Figure 1.
  • feed is periodic, and the method of operation of the apparatus will be described by describing the events of one working period.
  • valve 3 changes to a'position (not shown. in the drawings) such tiiat it allows the chamber Bf preferably to communicate with the chamber C andlshu ts ofi the'chamber A' from the two aforesaid chambers.
  • the high" working pressurealways prevails in theich amber C.
  • the said high working pressure to prevail infthe chamberB also.
  • the'change-over valve 6 causes the cylinder chamberi 4 above the piston 40 to communicate with the 'zone 16 ofjthe conveyingpipe in which still only pure waterfis conveyed under the high workingpressure. This at both sides of the piston in the cylinder, high working pressure prevails. Then the compression period of the piston cylinder commences, i.e. the piston begins to move downwards .and downwards; under the efiect of the hydraulic is closed, thechang'e-over valve owing to the change-over then allows the valve 3 to openand ensures that the valve blocks its associated aperture completely. With the opening of the valve 3 1 one entire feed cycle is completed and the whole process can be repeated again from the beginning.
  • a Iflow. of pure water can be used for closing purposespsaid flqwj being under approximately atmosphericpressure, and a branched-01f stream from the pure'water flowing under;
  • valve means operable to close and open communication be tween the feeding chamber and intermediate pressure chamber and to close and open communication between .the intermediate pressure chamber and the mixing chamher, a double-acting reciprocating accelerating pump having a cylinder and 'a piston, means connecting one end of the cylinder to the intermediate pressure chamber, means connecting the other end of the cylinder to said jacket and to the liquid conduit, and a change-over valve for alternately placing said other end of the pump cyl-f inder incommunication with the jacket and liquid coni duit.
  • a feeding apparatus in which 7 said jacket includes a drain pipe with a throttle valve,
  • a feeding apparatus including valve means-connecting the intermediate pressure cham ber alternately to the feeding and mixing chambers.

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)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Reciprocating Pumps (AREA)
US698509A 1956-12-01 1957-11-25 Feed apparatus with lock chambers for hydraulic conveying Expired - Lifetime US2943890A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HU875426X 1956-12-01

Publications (1)

Publication Number Publication Date
US2943890A true US2943890A (en) 1960-07-05

Family

ID=10980781

Family Applications (1)

Application Number Title Priority Date Filing Date
US698509A Expired - Lifetime US2943890A (en) 1956-12-01 1957-11-25 Feed apparatus with lock chambers for hydraulic conveying

Country Status (5)

Country Link
US (1) US2943890A (enrdf_load_stackoverflow)
BE (1) BE562804A (enrdf_load_stackoverflow)
FR (1) FR1201447A (enrdf_load_stackoverflow)
GB (1) GB875426A (enrdf_load_stackoverflow)
NL (1) NL110429C (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3197260A (en) * 1962-09-26 1965-07-27 Simpson Herbert Corp System for feeding and transporting materials
US3197261A (en) * 1964-03-09 1965-07-27 Simpson Herbert Corp System for feeding and transporting materials
US3232672A (en) * 1964-04-23 1966-02-01 Jr Percy S Gardner Lifting solid aggregate in liquid stream
US3544168A (en) * 1968-04-22 1970-12-01 Vni Gornometallurgishesky I Ts Device for loading bulk materials into pressure piping
US20120099934A1 (en) * 2009-03-11 2012-04-26 Wam Industriale S.P.A. Apparatus and related method for the recovery and the pneumatic transporation of dust coming from a filtration system
US20190300300A1 (en) * 2018-03-27 2019-10-03 Mac Trailer Manufacturing, Inc. Method of unloading dry bulk materials from a dry bulk tank
US11192734B2 (en) 2018-03-27 2021-12-07 Mac Trailer Manufacturing, Inc. Tank having an air piping system and method of loading and unloading the same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3635377A (en) * 1969-08-19 1972-01-18 Conair Material-transporting device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2672370A (en) * 1951-01-05 1954-03-16 Pittsburgh Cons Coal Company Transportation of solids through pipe lines
US2793082A (en) * 1950-01-09 1957-05-21 Jr Percy S Gardner Ore hoist

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2793082A (en) * 1950-01-09 1957-05-21 Jr Percy S Gardner Ore hoist
US2672370A (en) * 1951-01-05 1954-03-16 Pittsburgh Cons Coal Company Transportation of solids through pipe lines

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3197260A (en) * 1962-09-26 1965-07-27 Simpson Herbert Corp System for feeding and transporting materials
US3197261A (en) * 1964-03-09 1965-07-27 Simpson Herbert Corp System for feeding and transporting materials
US3232672A (en) * 1964-04-23 1966-02-01 Jr Percy S Gardner Lifting solid aggregate in liquid stream
US3544168A (en) * 1968-04-22 1970-12-01 Vni Gornometallurgishesky I Ts Device for loading bulk materials into pressure piping
US20120099934A1 (en) * 2009-03-11 2012-04-26 Wam Industriale S.P.A. Apparatus and related method for the recovery and the pneumatic transporation of dust coming from a filtration system
US9126772B2 (en) * 2009-03-11 2015-09-08 Wam Industriale S.P.A. Apparatus and related method for the recovery and the pneumatic transportation of dust coming from a filtration system
US20190300300A1 (en) * 2018-03-27 2019-10-03 Mac Trailer Manufacturing, Inc. Method of unloading dry bulk materials from a dry bulk tank
US10576866B2 (en) 2018-03-27 2020-03-03 Mac Trailer Manufacturing, Inc. Minimizing relative movement between component parts of a tank trailer during loading and unloading
US10618448B2 (en) * 2018-03-27 2020-04-14 Mac Trailer Manufacturing, Inc. Method of unloading dry bulk materials from a dry bulk tank
US10857929B2 (en) 2018-03-27 2020-12-08 Mac Trailer Manufacturing, Inc. Minimizing relative movement between component parts of a tank during loading and unloading
US10857927B2 (en) 2018-03-27 2020-12-08 Mac Trailer Manufacturing, Inc. Dry bulk tank with compartments and an air piping system for equalizing air pressure in the compartments
US10857928B2 (en) 2018-03-27 2020-12-08 Mac Trailer Manufacturing, Inc. Method of unloading materials from a tank
US10894501B2 (en) 2018-03-27 2021-01-19 Mac Trailer Manufacturing, Inc. Tank having an air piping system
US10913383B2 (en) 2018-03-27 2021-02-09 Mac Trailer Manufacturing, Inc. Method of decreasing stress and deformation in a bulk tank
US10919431B2 (en) 2018-03-27 2021-02-16 Mac Trailer Manufacturing, Inc. Dry bulk tank
US10919432B2 (en) 2018-03-27 2021-02-16 Mac Trailer Manufacturing, Inc. Tank
US10926688B2 (en) 2018-03-27 2021-02-23 Mac Trailer Manufacturing, Inc. Tank with compartments and an air piping system for equalizing air pressure in the compartments
US10946784B2 (en) 2018-03-27 2021-03-16 Mac Trailer Manufacturing, Inc. Method of loading materials into a tank
US11192734B2 (en) 2018-03-27 2021-12-07 Mac Trailer Manufacturing, Inc. Tank having an air piping system and method of loading and unloading the same

Also Published As

Publication number Publication date
GB875426A (en) 1961-08-16
BE562804A (enrdf_load_stackoverflow)
NL110429C (enrdf_load_stackoverflow)
FR1201447A (fr) 1959-12-30

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