US3879284A - Concentrator - Google Patents

Concentrator Download PDF

Info

Publication number
US3879284A
US3879284A US300909A US30090972A US3879284A US 3879284 A US3879284 A US 3879284A US 300909 A US300909 A US 300909A US 30090972 A US30090972 A US 30090972A US 3879284 A US3879284 A US 3879284A
Authority
US
United States
Prior art keywords
drive unit
shafts
concentrator
weights
coupling
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
Application number
US300909A
Other languages
English (en)
Inventor
Derec Fay Vaughan Davies
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.)
Deister Concentrator Co Inc
Original Assignee
Deister Concentrator Co Inc
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 Deister Concentrator Co Inc filed Critical Deister Concentrator Co Inc
Application granted granted Critical
Publication of US3879284A publication Critical patent/US3879284A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
    • B03B5/02—Washing granular, powdered or lumpy materials; Wet separating using shaken, pulsated or stirred beds as the principal means of separation
    • B03B5/04—Washing granular, powdered or lumpy materials; Wet separating using shaken, pulsated or stirred beds as the principal means of separation on shaking tables

Definitions

  • ABSTRACT A concentrator comprising a reversible pendantly mounted separating table, a drive unit of the poly eccentric fly wheel type, a rigid coupling between the table and the drive unit and the drive unit comprises two pairs of shafts each having a pair of arms and a weight secured between each pair of arms, interconnecting gears on the shafts and a motor drive connecting one of the shafts.
  • This invention relates to a pendantly supported concentrator wherein mixtures of heavy and light discrete particles may be separated into heavier and lighter groups. Larger and smaller groups of particles may be likewise separated. e.g. coal from shale. rutile from sand. brass droppings from used foundry sand. gold from quartz.
  • the power unit which imparted differential reciprocating motion to a gang of concentrator tables on which separation takes place had. in order to operate efficiently. to be suspended in a level horizon tal position.
  • the power unit was of the poly eccentric flywheel type having eccentrically weighted horizontal shafts and was rigidly coupled to a yoke which was connected by hinges or universal joints to the respective tables. It was driven by a stationary power source such as an electric motor through some form of flexible drive such as conventional rubber V belts.
  • the table is connected by a rigid coupling to a poly eccentric flywheel type power unit having a close coupled power source. With such an arrangement the power unit need not be maintained in horizontal position.
  • the present invention provides a concentrator comprising a separating table and a drive unit of poly eccentric flywheel type which inherently generates reciprocating motion which is quicker in one direction than in the opposite direction.
  • FIG. 1 is a plan view of the concentrator
  • FIG. 2 is a side view of the concentrator of FIG. I with some of the drive unit components in section:
  • FIGS. 3a to 3d illustrate positions of the weights in the drive unit at various times in a reciprocating cycle
  • FIG. 4 is a sectional view on line 44 of FIG. I.
  • the concentrator comprises a table 1 rigidly coupled as at 2 to a drive unit 3.
  • the drive unit 3 is of known principle and comprises a plurality of weights which are rotated to provide a reciprocating motion of the drive unit.
  • the drive unit 3 comprises a housing 4 having bearings 5 in which are mounted two shafts 6 and two shafts 7, the shafts 6 each carry a pair of arms 8 and secured to the arms and extending therebetween is a weight 9.
  • arms 10 are carried on the shafts 7 with a weight 11 secured to and extend between the arms 10 on each shaft 7.
  • Gears l2 and 13 on the shafts 6 and 7 respectively interconnect the shafts 6 and 7 and the gears 12 are twice the size ofthe gears 13.
  • a pulley I4 is fixed to one of the shafts 7 and a drive belt 15 connects the pulley 14 to a pulley 16 on a motor 17 fixed to the housing 4.
  • the gears 12 and 13 are housed in an oil sump l8 and the weight of the oil.
  • the oil sump and the gears (all disposed to one side of the drive unit 3) are counterbalanced to the weight of the motor 17 and pulleys l6 and 14 so that the drive unit can be supported if required from a single cable at a position indicated at l9.
  • the shafts are substantially normal to the plane of the table which is opposite to the prior mechanisms where the eccentrically loaded shafts were substantially parallel to the plane of the table.
  • FIG. 3a shows the weight 9 and 11 acting additively to produce movement in the direction of the arrow.
  • FIG. 3b shows the weights in a balanced first midposition. It is to be noted that the weights are symmetrical thereby avoiding any tendency for the drive unit to move laterally.
  • FIG. 30 illustrates the weights acting substractively to provide movement in the direction of the arrow which is less than the movement in the direction of the arrow in FIG. 3a.
  • FIG. 3d illustrates the weights in a balanced second mid-position. which like the first mid-position generates no lateral movement of the drive unit. Subsequent to the position shown in FIG. 3d the weights take up the position shown in FIG. 3a where their effect again becomes additive.
  • the coupling 2 comprises a first member 20 fixed to the housing 4 and having a threaded shank 21 on which there is mounted a lock nut 22.
  • the shank 21 is threaded into a socket 23 fixed to the table 1.
  • a suspension assembly indicated generally at 24 which comprises an eye member 25 adapted to receive a cable and having a threaded shank 26 on which there is a lock nut 27.
  • the shank 26 is threaded into a socket member 28 fixed to the table I.
  • the table By slackening the lock nuts 22 and 27 the table may be inclined sideways as a result of relative rotation between the members 2l23 and 26-28.
  • the lock nuts 22 and 27 are tightened against the members 23 and 28 respectively to maintain the table in the required position. Inclination can be varied without the drive unit 3 or the eye member 25 moving from their original position.
  • the eye member is described as being of a special type any mechanical equivalent would be satisfactory.
  • the concentrator may be suspended at two points namely 19 and 25. that the power unit 3 by virtue of its symmetrical manufacture will reciprocate without lateral movement and that the concentrator table may be inclined sideways relative to the suspending cables (considered as vertical and datum lines).
  • the concentrator as a whole may be inclined longitudinally as required by operating conditions by varying the length of the cables.
  • the drive unit 3 may be readily adapted to cater for different reciprocation requirements.
  • the arms 8 and 10 are clamped onto the shafts 6 and 7 thereby allowing them to be moved together or apart to accommodate weights of different length.
  • the weights are secured by screws 29 to the arms 8 and 10 enabling the weight to be readily replaced.
  • the weight 9 has holes therein for the securing screws eccentric to the longitudinal axis of the weights.
  • the longitudinal axis of weights 9 is shown in broken outline as being outside the fastening screws 29. By the simple expedient of rotating the weight 9 and refastening with the screws 29 the longitudinal axis can be disposed between the screws 29 and the shaft 6. By this means the effective radius at which weight 9 is operating has been increased.
  • a long-felt need in the art of concentrators has been fulfilled. that is. a ready ability to vary both weight (W) and radius (R) of the reciprocation creating weights.
  • This invention also allows of the manufacture of multi-tabled concentrators without the need for yokes which were necessary with the pivot or universal joints of the old type concentrators.
  • Yokes connected a drive unit to the tables.
  • the tables can be rigidly direct coupled to a common drive unit.
  • the drive unit In order to do this the drive unit must be "long" and the present arrangement with shafts normal to the plane of the table enables the drive units to be elongated as required. a feature not to be found in prior art concentrator drive units.
  • the mass and physical size of the weights can be readily varied because of the weight securement features hereinbefore described.
  • a cable may be used to support the table corner 34 in the event that the balance of the assembly is upset by the use of a sluicing gutter along the side 35 or the end 36 of the table.
  • a sluicing gutter is sometimes added to collect the material washed sideways or off the end of the table during the concentrating operation.
  • It may also be desired to support the drive unit by two cables rather than the single cable as hereinbefore mentioned. Irrespective of the number of cables the length adjustments need only be arbitrary. This is contrary to the situation with known concentrators where efficient operation depended upon critical cable length adjustments.
  • a concentrator comprising a separating table and a drive unit of poly eccentric flywheel type which inherently generates reciprocating motion which is quicker in one direction than in the opposite direction.
  • a concentrator as claimed in claim I wherein the coupling between the drive unit and the table comprises a first member. a threaded shank on the first member. a second member. a threaded socket in the second member with said shank engaged in the socket, and a lock nut on the shank to lock the first and second members against relative rotation and axial movement.
  • either of the two usable surfaces of the table can be brought into operative position by turning the table relative to the drive unit by temporarily releasing the coupling between the table and the drive unit.
  • a concentrator as claimed in claim 1 wherein the drive unit comprises a housing, two pairs of parallel shafts rotatably mounted in the housing. the axes of the shafts of one pair lying in a plane which is parallel to a plane including the axes of the shafts of the other pair. both planes being substantially normal to the plane of the table and at right angles to the direction of reciprocation of the table.
  • drive means mounted on the housing to rotate the shafts in timed relation to each other. a weight eccentrically fixed to each shaft.
  • weights fixed to the shafts of the pair closest to the table being the same and larger than the remaining two weights which are the same and are fixed to the shafts of the other pair so as to impart the required reciprocating motion to said drive unit upon rotation of the shafts.
  • a concentrator as claimed in claim 4 including arms secured to each shaft for eccentrically mounting the weights on the shafts. means to secure each weight to its arms and permit the distance from the centre of gravity of each weight to its shaft to be altered.
  • a concentrator as claimed in claim 5 including means to secure the arms to the shaft which permits axial adjustment of the arms on the shafts so theweights can be replaced by weights of different dimensions.
  • a concentrator comprising a separating table and a drive unit of poly eccentric flywheel type which inherently generates reciprocating motion which is quicker in one direction than in the opposite direction.
  • said drive unit including eccentrically weighted parallely disposed shafts having their axes substantially normal to the surface of the table.

Landscapes

  • Baking, Grill, Roasting (AREA)
  • Jigging Conveyors (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Transmission Devices (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
US300909A 1971-10-28 1972-10-26 Concentrator Expired - Lifetime US3879284A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AUPA682871 1971-10-28

Publications (1)

Publication Number Publication Date
US3879284A true US3879284A (en) 1975-04-22

Family

ID=3764846

Family Applications (1)

Application Number Title Priority Date Filing Date
US300909A Expired - Lifetime US3879284A (en) 1971-10-28 1972-10-26 Concentrator

Country Status (6)

Country Link
US (1) US3879284A (xx)
CA (1) CA959796A (xx)
DE (2) DE2251814C3 (xx)
GB (1) GB1346880A (xx)
SE (1) SE388132B (xx)
ZA (1) ZA727496B (xx)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4217208A (en) * 1978-05-18 1980-08-12 The Dow Chemical Company Method for separating solid lubricating material from drill cuttings
USRE30932E (en) * 1976-11-15 1982-05-18 The Deister Concentrator Company, Inc. Vibrator device
WO1993005882A1 (en) * 1991-09-23 1993-04-01 Camas International, Inc. Apparatus/method for uniform fluidized bed sorting
US5244099A (en) * 1989-06-28 1993-09-14 Camas International, Inc. Apparatus and method for improving density uniformity of a fluidized bed medium, and/or for improved material fluidized bed sorting
CN103816988A (zh) * 2014-03-17 2014-05-28 戚木直 一种微米驻波筛选机
CN107774433A (zh) * 2016-08-29 2018-03-09 江西省威尔国际矿业装备有限公司 菱形摇床床面

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2852678A1 (de) * 1978-12-06 1980-06-19 Kloeckner Humboldt Deutz Ag Schwingherd

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3075644A (en) * 1957-07-09 1963-01-29 Galis Electric & Machine Compa Materials separating apparatus and drive mechanism therefor
US3241674A (en) * 1961-02-06 1966-03-22 Deister Concentrator Concentrating table
US3291306A (en) * 1965-06-28 1966-12-13 Deister Concentrator Concentrating table

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3075644A (en) * 1957-07-09 1963-01-29 Galis Electric & Machine Compa Materials separating apparatus and drive mechanism therefor
US3241674A (en) * 1961-02-06 1966-03-22 Deister Concentrator Concentrating table
US3291306A (en) * 1965-06-28 1966-12-13 Deister Concentrator Concentrating table

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE30932E (en) * 1976-11-15 1982-05-18 The Deister Concentrator Company, Inc. Vibrator device
US4217208A (en) * 1978-05-18 1980-08-12 The Dow Chemical Company Method for separating solid lubricating material from drill cuttings
US5244099A (en) * 1989-06-28 1993-09-14 Camas International, Inc. Apparatus and method for improving density uniformity of a fluidized bed medium, and/or for improved material fluidized bed sorting
WO1993005882A1 (en) * 1991-09-23 1993-04-01 Camas International, Inc. Apparatus/method for uniform fluidized bed sorting
CN103816988A (zh) * 2014-03-17 2014-05-28 戚木直 一种微米驻波筛选机
CN107774433A (zh) * 2016-08-29 2018-03-09 江西省威尔国际矿业装备有限公司 菱形摇床床面

Also Published As

Publication number Publication date
DE2251814B2 (de) 1977-07-14
DE2265238A1 (de) 1976-12-30
GB1346880A (en) 1974-02-13
CA959796A (en) 1974-12-24
ZA727496B (en) 1973-07-25
SE388132B (sv) 1976-09-27
DE2251814C3 (de) 1978-03-02
DE2251814A1 (de) 1973-05-03

Similar Documents

Publication Publication Date Title
US2144382A (en) Low head vibrating screen
US3796299A (en) Vibratory material handling device with variable force application
US3053379A (en) Material handling vibrating machine
US5131525A (en) Vibratory conveyor
US5713457A (en) Two-way vibratory feeder or conveyor
US3226989A (en) Vibratory screen systems
US3879284A (en) Concentrator
GB2060813A (en) Vibratory machines
US3378142A (en) Vibratory screen
US4482455A (en) Dual frequency vibratory screen for classifying granular material
US3750866A (en) Vibratory conveyor with counterpoise
US2936064A (en) Vibratory bulk material conveyor mechanism
US3396294A (en) Vibratory motor
US2208596A (en) Reciprocating screen
US3347373A (en) Oscillating screens
CN108097577A (zh) 一种空间凸轮式三自由度振动筛
CN105921406A (zh) 一种椭圆振动逆流筛选机
EP0253720B1 (en) Gravitational separation
US3630357A (en) Stop motion screening appartus and method
US2465833A (en) Unbalanced weight vibratory screening apparatus
SU1227263A1 (ru) Сортировочное устройство
US3241674A (en) Concentrating table
US2804967A (en) Vibrating screen
SU542941A1 (ru) Ситовой анализатор
CN109127362B (zh) 一种物料分离并联振动筛