US3875803A - Equipment for sampling bulk material - Google Patents

Equipment for sampling bulk material Download PDF

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Publication number
US3875803A
US3875803A US394529A US39452973A US3875803A US 3875803 A US3875803 A US 3875803A US 394529 A US394529 A US 394529A US 39452973 A US39452973 A US 39452973A US 3875803 A US3875803 A US 3875803A
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US
United States
Prior art keywords
sample
sample container
equipment according
discharge door
chute
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
US394529A
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English (en)
Inventor
William Michael Clewlow
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.)
Birtley Engineering Ltd
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Birtley Engineering Ltd
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Filing date
Publication date
Application filed by Birtley Engineering Ltd filed Critical Birtley Engineering Ltd
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Publication of US3875803A publication Critical patent/US3875803A/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/10—Devices for withdrawing samples in the liquid or fluent state
    • G01N1/20—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials

Definitions

  • ABSTRACT The invention relates to equipment for sampling bulk material as it falls in a stream and comprises a sample container adapted to be moved through the stream and to collect a sample therefrom, a discharge door in the sample container normally held in a closed position by resilient means. and a sample collection chute movable to and from a position in which it may collect a sample from the sample container, the chute being adapted to engage and open the discharge door as it moves to the position in which it may collect a sample from the sample container.
  • This invention relates to equipment for taking sam ples of bulk material falling in a stream and relates in particular to equipment of the kind in which a sample container is caused to make sampling runs through the falling stream of bulk particulate material, such as, for example, minerals or any material in granular form, and to discharge the material collected therefrom.
  • equipment for sampling bulk material as it falls in a stream comprises a sample container movable through the stream in such a manner as to collect a sample therefrom, a discharge door in the sample container, resilient means carried by the sample container acting to hold the discharge door in a closed position, and a sample collection chute movable to and from a position in which it may collect a sample from the sample container, the chute being adapted to engage and open the discharge door against the action of the resilient means as it moves to the position in which it may collect a sample from the sample container.
  • the sample container will preferably be of trough form, with a pivotally attached bottom closure forming the discharge door.
  • the resilient means which are preferably torsion springs, must, of course, be strong enough to keep the discharge door closed against the weight of the sample collected within the sample container.
  • the sample collection chute is preferably pivotally mounted and may be moved pivotally to and from its sample collection position by any suitable means but we prefer to use a linear actuator for this purpose.
  • the engagement between the chute and the discharge door is preferably by means of a cam and cam follower roller carried by the chute and discharge door respectively.
  • the sample container moves from a first, parked position and travels through the stream of falling bulk material to a second position and is then reversed to travel back from the second to the first position passing again through the stream of bulk material (the sample container thus collects a sample increment in each of its two runs through the stream).
  • the sample collection chute With the sample container back in the first position the sample collection chute is moved pivotally to its sample collection position and in so doing engages and opens the discharge door to allow the sample to be discharged into the chute, and the chute is then moved pivotally away from its sample collection position allowing the discharge door to close under the action of the resilient means in readiness for the next sampling run.
  • any suitable means may be utilised to cause the sample container to move through, and collect a sample from the stream of bulk material without departing from the scope of the invention
  • FIG. I is a plan view of equipment according to the invention.
  • FIG. 2 is a side elevation of the equipment
  • FIG. 3 is a part side elevation showing the discharge chute in an inoperative position and FIG. 4 is a part side elevation showing the discharge chute in an operative, sample discharge position.
  • the equipment has a base frame I of substantially rectangular shape.
  • a shaft 2 is transversely mounted in the base frame 1 by bearings 3 and has a pair of spaced parallel arms 4 and an end pulley 5 mounted thereon.
  • a sample collecting container 6 is mounted between the ends of the pair of arms 4 and the base frame is so positioned relative to the head drum 7 of a conveyor belt 8 by any suitable framework (not shown) that the arms in swinging from a parked position, as shown, to a position shown by the broken lines in FIG. 2 carry the container 6 through the bulk material stream 9 discharged from the end of the conveyor 8 thereby collecting a sample increment therefrom.
  • the sampling cycle may comprise one movement of the arms from and to the parked position whereby the collected sample consists of two sample increments or alternatively may comprise a plurality of such movements.
  • the apparatus has two hydraulic linear actuators l0 and 11, the rams I2 and 13 of which are connected to the ends of a steel rope I4 which engages approximately one half of the periphery of the pulley 5, the rope 14 preferably being anchored at one point to the pulley to prevent relative slip therebetween.
  • the ram 12 of actuator I0 With the arms in the parked position shown the ram 12 of actuator I0 is extended and the ram 13 of actuator 11 is retracted. The arms are swung downwardly by the retraction of the ram 12 of the actuator 10 and extension of the ram 13 of the actuator 11 thus causing the pulley 5 and the shaft 2 to rotate in a clockwise direction, as viewed in FIG. 2.
  • the actuator ll On reaching the position shown by the broken lines the arms are brought to rest and the actuator ll will preferably be provided with a cushion head, which may. for example, be a dash pot on air trap, to ensure that the arms are gradually brought to rest.
  • a cushion head which may. for example, be a dash pot on air trap, to ensure that the arms are gradually brought to rest.
  • the ram 12 of the actuator To swing the arms upwardly back to the parked position the ram 12 of the actuator is extended and the ram 13 ofthe actuator 11 is retracted thus rotating the pulley S and the shaft 2 in an anticlockwise direc tion. as viewed in FIG. 2.
  • the arms On reaching the parked position the arms are preferably held there by a directional valve on the actuator I].
  • the operation of the two actuators l0 and ll should be such that the sample collecting container 6 moves through the bulk material stream 9 with a uniform and equal speed in both directions and therefore collects a fair sample increment from the stream in each passage through the bulk material
  • the collected sample is discharged from the sample collection container 6 by the actuation of pivotal discharge chute 15, the arrangement and manner of operation of which can be most clearly seen in FIGS. 3 and 4.
  • the discharge chute 15 is provided with trunnions 16 which are mounted in flange bearings 17 carried by the base frame 1.
  • a hydraulic linear actuator 18 is pivotally mounted at 19 on the base frame 1 and has its ram 20 pivotally connected to a lug 21 on the discharge chute 15.
  • the discharge chute is normally held by the actuator 18 in the inoperative position shown in FIG. 3 in which it lies out of the arcuate path followed by the container 6 during its sample collection run. To remove a sample contained within the sample collecting container 6 the discharge chute is moved pivotally by the actuator 18 to the position shown in FIG.
  • the discharge chute 15 is arranged to discharge the sample into a collection chute 26. After discharge of the sample the discharge chute 15 is moved back to the position shown in FIG. 3 and the discharge door 25 moves back to the closed position under the action of a torsion spring (not shown which spring is strong enough to keep the door in the closed position when a sample is contained within the container 6.
  • the linear actuators 10, 11 and 18 will preferably be operated by suitable control means to perform the sample collection and discharge cycle atuomatically but manual control could be used if so desired.
  • Equipment for sampling bulk material as it falls in a stream comprising a sample container movable through the stream in such a manner as to collect a sample therefrom. a discharge door in the sample container. resilient means carried by the sample container acting to hold the discharge door in a closed position, and a sample collection chute movable to and from a position in which it may collect a sample from the sample container, the chute being adapted to engage and open the discharge door against the action of the resilient means as it moves to the position in which it may collect a sample from the sample container.
  • Equipment according to claim 1 wherein the sam' ple container is mounted for pivotal movement and is adapted to move pivotally to and from its sample collection position.
  • Equipment according to claim 1 wherein the sample container is mounted on a pair of spaced arms, which arms are mounted for pivotal movement about a pivot axis for movement of the sample container along an arcuate path, and the sample collection chute when not in its sample collection position lies clear of the arcuate path of the sample container.
  • Equipment according to claim 5 wherein a driving wheel mounted on the shaft is adapted to impart rotary movement to the shaft and thereby pivotal movement to the pair of spaced arms.
  • Equipment according to claim 5 wherein a flexible transmission member engages the periphery of the driving wheel and at least one linear actuator is connected to the flexible transmission member and is adapted to move the flexible transmission member to impart rotary movement to the shaft.
  • Equipment according to claim 1 wherein a hydraulic linear actuator is arranged and adapted to move the sample collection chute.

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Sampling And Sample Adjustment (AREA)
US394529A 1972-09-20 1973-09-05 Equipment for sampling bulk material Expired - Lifetime US3875803A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4347072A GB1381134A (en) 1972-09-20 1972-09-20 Equipment for sampling bulk material

Publications (1)

Publication Number Publication Date
US3875803A true US3875803A (en) 1975-04-08

Family

ID=10428891

Family Applications (1)

Application Number Title Priority Date Filing Date
US394529A Expired - Lifetime US3875803A (en) 1972-09-20 1973-09-05 Equipment for sampling bulk material

Country Status (5)

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US (1) US3875803A (enExample)
JP (1) JPS5344833B2 (enExample)
AU (1) AU476611B2 (enExample)
DE (1) DE2346968C2 (enExample)
GB (1) GB1381134A (enExample)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4026155A (en) * 1976-05-20 1977-05-31 John Abraham Joseph Conveyor sampler
US4326425A (en) * 1980-10-08 1982-04-27 Sverdrup & Parcel And Associates, Inc. Drive control arrangement for swing arm material sampler
WO1985004955A1 (fr) * 1984-04-17 1985-11-07 Société Nationale Elf Aquitaine (Production) Dispositif et procede d'echantillonnage d'un flux de matieres solides en chute libre
US4641540A (en) * 1985-05-01 1987-02-10 Ellis Jack J Bulk material sampling apparatus
US5337620A (en) * 1993-06-02 1994-08-16 Kalidini Sanyasi R Sampling tool
US5398558A (en) * 1993-09-16 1995-03-21 100% California State University Fresno Foundation Apparatus for sampling material
WO2013059867A1 (en) * 2011-10-25 2013-05-02 Newcastle Innovation Limited Conveyor belt sampler
US11927507B2 (en) 2018-04-12 2024-03-12 Pharma and Nutraceutical PD Pty Ltd Sampling device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006056450B3 (de) * 2006-11-28 2008-07-10 Michael Germann Vorrichtung zur diskontinuierlichen Entnahme von Proben rieselfähigen Schüttgutes und Verwendung der Vorrichtung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2727390A (en) * 1951-12-12 1955-12-20 Kaiser Aluminium Chem Corp Sampler
US2977800A (en) * 1956-04-14 1961-04-04 Birmingham Small Arms Co Ltd Means for sampling bulk material

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1217510A (en) * 1967-12-28 1970-12-31 Birmingham Small Arms Co Ltd Improvements in or relating to means for sampling bulk materials

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2727390A (en) * 1951-12-12 1955-12-20 Kaiser Aluminium Chem Corp Sampler
US2977800A (en) * 1956-04-14 1961-04-04 Birmingham Small Arms Co Ltd Means for sampling bulk material

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4026155A (en) * 1976-05-20 1977-05-31 John Abraham Joseph Conveyor sampler
US4326425A (en) * 1980-10-08 1982-04-27 Sverdrup & Parcel And Associates, Inc. Drive control arrangement for swing arm material sampler
WO1985004955A1 (fr) * 1984-04-17 1985-11-07 Société Nationale Elf Aquitaine (Production) Dispositif et procede d'echantillonnage d'un flux de matieres solides en chute libre
US4641540A (en) * 1985-05-01 1987-02-10 Ellis Jack J Bulk material sampling apparatus
US5337620A (en) * 1993-06-02 1994-08-16 Kalidini Sanyasi R Sampling tool
US5398558A (en) * 1993-09-16 1995-03-21 100% California State University Fresno Foundation Apparatus for sampling material
WO2013059867A1 (en) * 2011-10-25 2013-05-02 Newcastle Innovation Limited Conveyor belt sampler
US11927507B2 (en) 2018-04-12 2024-03-12 Pharma and Nutraceutical PD Pty Ltd Sampling device

Also Published As

Publication number Publication date
JPS5344833B2 (enExample) 1978-12-01
JPS4970685A (enExample) 1974-07-09
AU6040773A (en) 1975-03-20
DE2346968A1 (de) 1974-04-04
GB1381134A (en) 1975-01-22
DE2346968C2 (de) 1984-07-26
AU476611B2 (en) 1976-09-30

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