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WO1992012409A1 - Dispositif de prelevement d'echantillons de matieres en vrac, notamment de melanges d'alimentation - Google Patents

Dispositif de prelevement d'echantillons de matieres en vrac, notamment de melanges d'alimentation Download PDF

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Publication number
WO1992012409A1
WO1992012409A1 PCT/CS1991/000003 CS9100003W WO9212409A1 WO 1992012409 A1 WO1992012409 A1 WO 1992012409A1 CS 9100003 W CS9100003 W CS 9100003W WO 9212409 A1 WO9212409 A1 WO 9212409A1
Authority
WO
WIPO (PCT)
Prior art keywords
cylindrical
hollow sleeve
sampling
rotatably
jacket
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.)
Ceased
Application number
PCT/CS1991/000003
Other languages
English (en)
Inventor
Roman VOPÁLKA
Stanislav S^¿AFÁR^¿
Frantis^¿ek S^¿ERY^´
Dalibor MATUS^¿KA
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.)
ROMILL
Original Assignee
ROMILL
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 ROMILL filed Critical ROMILL
Publication of WO1992012409A1 publication Critical patent/WO1992012409A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • G01N2001/2007—Flow conveyors
    • G01N2001/2021—Flow conveyors falling under gravity

Definitions

  • the invention relates to a device for taking samples of loose materials, particularly feeding mixtures, comprising a cylindrical sampling shovel with an inlet opening being controlled in the direction of shifting into a sealed through chamber arranged in a transport duct and back by a pneumatic cylinder.
  • said device consists of a sealed through chamber arranged in a transport duct into which passes from a side a shiftable sampling tube, the open end of which is directed against the direction of the loose material flow, mentioned sampling tube being controlled by a control piston.
  • the other end of the shiftable sampling tube leads out of the sealed chamber into a flexible tube designed to supply the sample of loose material to the analyzer.
  • Another known device contains a rotary sampling tube arranged inclined up in the transport duct.
  • the sampling tube inside the transport duct is provided with a channellike inlet and on the outside with a gear ring for rotary motoric adjustment of opened part of the sampling tube in the flow of loose material into the position to take sampie or into closed position.
  • a shortcoming of the device with shiftable sampling tube is that mentioned device reaches by its opened end into the flow of loose material only in one place of the transport duct cross section and taken sample contains the components of the loose material which flow at this moment in this piece of the cross section.
  • the sample contains also a relatively larger quantity of components flowing at the wall of the transport duct than in its central part. It is because the opened end of the sampling tube when moving in and out is a considerably longer time in the zone at the wall of the transport duct than in the zone remote from mentioned wall.
  • Mentioned shortcoming is partly eliminated by another device with rotary sampling tube in which opened part of the sampling tube faces the flow of loose material by its whole surface for the same time, but again only in one place of the transport duct cross section and taken sample of loose material is again not satisfactory representative.
  • the fact that the sampling tube is all the time inside the transport duct causes constant interference of the flow of air and of loose material between two samplings.
  • a device for taking samples of loose materials, particularly feeding mixtures consisting of a cylindrical sampling shovel with an inlet opening being controlled in the direction of shifting in a sealed through chamber arranged in. a transport duct and back by a pneumatic cylinder according to the invention, the subject matter of which is that to sealed chamber is fixed a hollow sleeve of a sampling mechanism with in its interior shiftably located cylindrical cover rotatably located on a cylindrical sampling shovel, while in cylindrical jacket of hollow sleeve there is a rotatably located control ring which is in mesh on the one hand with a pinion of a controlling electric motor, on the other hand with cylindrical cover which is in its jacket provided with an inlet and outlet opening and said sampling shovel is provided with a bottom with center flange which is rotatably located on a piston rod of a pneumatic cylinder and which is provided with a radially directed guiding finger for shiftable location in a securing groove being formed longitudinally in internal surface of hollow
  • the bottom of the hollow sleeve is provided with a couple of by 180° from each other located stop pins reaching into a cylindrical cavity between bottom of cylindrical cover and bottom of a hollow sleeve for a contact with guiding finger of sampling shovel which is in its bottom provided with a limiting pin reaching into a curved groove provided in bottom of cylindrical cover.
  • hollow sleeve of sampling mechanism leads from a side perpendicularly into central part of a duct portion of a transport duct which is located rotatably between a couple of side fix parts of a duct portion, while it is provided with a gear ring being in mesh with a pinion of a driving electric motor which is fixed to a fix part of a duct portion.
  • fix part of duct portion is surrounded by a collecting collar formed by an internal cylindrical jacket and coaxial external cylindrical jacket mutually interconnected by a chute bottom inclined towards an outlet throat, while collecting collar is provided with an annular cover located slidably rotatably on upper edges of internal cylindrical jacket and external cylindrical jacket and with a connecting throat fixed to a delivery throat of a sampling mechanism.
  • Fig.1 is a schematic front view of the device for taking samples
  • Fig.2 is a longitudinal axial section of the sampling mechanism in a front view along line II-II in Fig.3
  • Fig.3 is a transversal section of the sampling mechanism along line III-III in Fig.2
  • Fig.4 is a fro schematic view of the device with attached collecting collar
  • Fig.5 is a vertical axial section of the collecting collar in front view
  • Fig.6 is a ground plan of the collecting collar.
  • Description of preferred embodiment Device for taking samples contains a duct portion 1 -Fig 1- the ends of which are provided with fix parts 2,3 with flanges 4 for connection with adjacent parts 5,6 of transport duct.
  • Central part of duct portion 1 forms a rotary located sealed chamber 7. and a sampling mechanism 9. is fixed perpendicularly to jacket 8 of said chamber 7.
  • a gear ring 10 which is in mesh with a pinion 11 located fixedly on the shaft of a driving elec trie motor 12 which is fixed to fix part 2 of duct portion
  • Sampling mechanism 9 -Fig.2- consists of a two-part cylindrical hollow sleeve 13 located by its opened end in an opening 14 of jacket 8 of sealed chamber 7. while it is fixed to said jacket 8 for example by not shown screws.
  • hollow sleeve 13 there is a shiftably and rotatably located cylindrical cover 15 provided at its opened end at jacket 8 of sealed chamber 7 with inlet and outlet opening 16 of the same size and shape like inlet opening 17 in sampling sho- vel 18.
  • Sampling shovel 18 is located ro tatably in cylindrical cover 15 and consists of a hollow cylindrical body which is at jacket 8 of sealed chamber 7 closed by a fix cover 19 which forms a part of jacket 8 of sealed chamber 2 when sampling shovel 8 is in the position when no sample is being taken.
  • sampling shovel 18 The interior of sampling shovel 18 is provided with a fix partition 20 limiting the length of its effective space 21 to a value corresponding with the length of inlet openning 17.
  • Sampling shovel 18 is provided with bottom 22 with central flange 23 by which the sampling shovel 18 is rotatably locatd on a piston rod 24 of a pneumatic cylinder 25 which is fixed to bottom 26 of hollow sleeve 13.
  • Cylindrical cover 15 is by its bottom 27. located rotat ⁇ bly on central flange 23. Connection of piston rod 24 with flange 23 enabling free rotary motion of central flange 23 of sampling shovel 18 and at the same time its forward and backward motion performed by piston rod 24.
  • a guiding finger 31 To outer face of central flange 23 is fixed a guiding finger 31. which is arranged in a cylindrical hollow 32 between bottom 26 of hollow sleeve 13 and bottom 27 of cylindrical cover 15, where it can freely rotate together with central flange 23. Guiding finger 31 reaches by its free end into securing groove 33 made longitudinally in a part of hollow sleeve 13, while it corresponds with the length of maximum extension of piston rod 24.
  • Bottom 27 of cylindrical cover 15 is provided with a curved groove 52 into which reaches a limiting pin 53 fixedly located in bottom 22 of sampling shovel 18, limiting pin 53 serves to limit maximum relative motion between cylindrical cover 15 and sampling shovel 18.
  • bottom 26 of hollow sleeve 13 there are two fix stop pins 54 and 55 which reach into cylindrical hollow 32 and are arranged on a pitch circle under the angle of 180°.
  • a control ring 34 In central pert of the length of hollow sleeve 13 is arranged a control ring 34 which slidably penetrates the wall of hollow sleeve 13 and by an entraining lug 35 created on internal surface of control ring 34 and reaching into a guiding groove 36 it is connected with cylindrical cover 15 which is shiftably arranged in control ring 34.
  • Control ring 34 is in mesh with pinion 37 fixedly located on output shaft 38 of controlling electric motor 39. Because the control ring 34 divides the hollow sleeve 13 into two parts, said two parts are provided on the outside of control ring 34 with connecting flanges 40 connected for example by not shown screws.
  • Hollow sleeve 13 is at jacket 8 of sealed chamber 2 provided with outlet opening 41 of loose material communicating with inlet and outlet opening 16 of cylindrical cover 15 end with inlet opening 17 of sampling shovel 18. Delivery throat 42 of a not shown delivery duct is connected to outlet opening
  • Collecting collar 43 -Fig.5- is formed by internal cylindrical jacket 44 and coaxially with it arranged external cylindrical jacket 45 which are mutually connected by a chute bottom 46 inclined towards the lowest point where the chute bottom 46 continues in outlet throat 48 to which is connected a not shown delivery duct.
  • Internal space 49 of collecting collar 43 is closed from up by an annular cover 50 located slidably rotatably on upper edges of internal cylindrical jacket 44 and external cylindrical jacket 45. Between each of the jackets 44,45 and annular cover 50 there is arranged a not shown seal, for example a usual labyrinth packing.
  • Annular cover 50 is fixedly connected with sampling mechanism 9 by connecting throat 51.
  • Cylindrical cover 15 Due to reverse motion of cylindrical cover 15 friction causes again entrainment of sampling shovel 18 until guiding finger 31 leans against further stop pin 54 whet stops entrainment of sampling shovel 18 and free end of guiding finger 31 gets in alignment with securing groove 33. Cylindrical cover 15 continues in its rotary motion during which said inlet opening is closed again, while the other end of curved groove 52 leans against limiting pin
  • driving electric motor 12 is set in operation and electric motor 1 2 sets by its pinion 11 a gear ring 10 into rotary motion as well as central part of duct portion 1 located rotatably between fix parts 2 and 3 forming sealed chamber 2 with attached sampling mechanism J9.
  • annular cover 50 rotates also and byits peripheral part it slides over upper edges of internal cylindrical jacket 44 and external cylindrical jacket 45.
  • the device according to the invention can be used to take samples of loose material, for example cement, feeding mixtures and similar materials, especially in the cases when it is necessary to obtain objectively representative sample.

Landscapes

  • 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)

Abstract

Dispositif contenant une pelle cylindrique d'échantillonnage (18) dotée d'un orifice d'entrée (17) et entraînée par un vérin pneumatique en un mouvement de va-et-vient dans une chambre étanche (7) formée dans un conduit de transport. Un manchon creux (13) du mécanisme d'échantillonnage (9) est fixé à ladite chambre (7) étanche, et un couvercle cylindrique intérieur (15) est monté rotatif sur ladite pelle cylindrique d'échantillonnage (18), tandis qu'une roue de commande (34) est montée rotative dans la paroi cylindrique du manchon creux (13) et engrenée d'une part avec le pignon (37) d'un moteur électrique de commande (39) et d'autre part avec le couvercle cylindrique (15) dans la paroi duquel sont ménagés des orifices d'entrée et de sortie (16). Le fond (22) de la pelle d'échantillonnage (18) porte une bride centrale (23) montée rotative sur la tige de piston (24) du cylindre pneumatique (25), et un doigt radial de guidage (31) engagé et déplaçable dans une rainure de fixation (33) ménagée dans la surface interne du manchon creux (13) dans le sens longitudinal de celui-ci. Le fond (26) du manchon creux (13) peut être muni d'une paire de boulons de butée (54, 55) destinés à entrer en contact avec le doigt de guidage (31) de la pelle d'échantillonnage (18) dont le fond (22) peut être pourvu d'un boulon d'arrêt (53) engagé dans une rainure courbée (52) ménagée dans le fond (27) du couvercle cylindrique (15). La chambre étanche (17) est montée rotative dans le conduit de transport au moyen d'une roue dentée (10) et d'un moteur électrique d'entraînement (12). La partie fixe (3) du conduit de transport peut être entourée d'une bague de collecte (43), tandis que le fond (46) de la goulotte est incliné en direction de l'ouverture de décharge (48).
PCT/CS1991/000003 1990-12-29 1991-12-20 Dispositif de prelevement d'echantillons de matieres en vrac, notamment de melanges d'alimentation Ceased WO1992012409A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CS906986A CS698690A3 (en) 1990-12-29 1990-12-29 Withdrawing head for loose materials sampling
CSPV6986-90 1990-12-29

Publications (1)

Publication Number Publication Date
WO1992012409A1 true WO1992012409A1 (fr) 1992-07-23

Family

ID=5418142

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CS1991/000003 Ceased WO1992012409A1 (fr) 1990-12-29 1991-12-20 Dispositif de prelevement d'echantillons de matieres en vrac, notamment de melanges d'alimentation

Country Status (3)

Country Link
AU (1) AU9118991A (fr)
CS (1) CS698690A3 (fr)
WO (1) WO1992012409A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113740099A (zh) * 2021-09-03 2021-12-03 中国科学院空间应用工程与技术中心 一种基于曲面展开机构的随钻侧向采样机构
CN114018641A (zh) * 2021-11-03 2022-02-08 山东省农业科学院畜牧兽医研究所 一种饲料水分测量用取样装置
CN114371031A (zh) * 2021-12-21 2022-04-19 江苏德邦多菱健康科技有限公司 可多点取样的磷酸三钙流畅性初检装置及方法
CN118857842A (zh) * 2024-09-26 2024-10-29 北京中煤煤炭洗选技术有限公司 一种选煤采样装置及其使用方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115372078B (zh) * 2022-08-06 2024-12-27 山东万邦石油科技股份有限公司 一种散料输送系统用取样器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3659461A (en) * 1970-06-18 1972-05-02 Great Northern Nekoosa Corp Line sampling device
US4024765A (en) * 1973-11-29 1977-05-24 Jean Abonnenc Automatic volumetric device for taking samples of granular or powdered material
US4433587A (en) * 1983-01-17 1984-02-28 Gustafson, Inc. Sampler for flowing pressurized dry material
US4702114A (en) * 1984-05-07 1987-10-27 Omya S.A. Device for withdrawing and conditioning samples of materials in solid, liquid or gaseous form, for the purpose of analysis thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3659461A (en) * 1970-06-18 1972-05-02 Great Northern Nekoosa Corp Line sampling device
US4024765A (en) * 1973-11-29 1977-05-24 Jean Abonnenc Automatic volumetric device for taking samples of granular or powdered material
US4433587A (en) * 1983-01-17 1984-02-28 Gustafson, Inc. Sampler for flowing pressurized dry material
US4702114A (en) * 1984-05-07 1987-10-27 Omya S.A. Device for withdrawing and conditioning samples of materials in solid, liquid or gaseous form, for the purpose of analysis thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113740099A (zh) * 2021-09-03 2021-12-03 中国科学院空间应用工程与技术中心 一种基于曲面展开机构的随钻侧向采样机构
CN114018641A (zh) * 2021-11-03 2022-02-08 山东省农业科学院畜牧兽医研究所 一种饲料水分测量用取样装置
CN114018641B (zh) * 2021-11-03 2023-10-13 山东省农业科学院畜牧兽医研究所 一种饲料水分测量用取样装置
CN114371031A (zh) * 2021-12-21 2022-04-19 江苏德邦多菱健康科技有限公司 可多点取样的磷酸三钙流畅性初检装置及方法
CN114371031B (zh) * 2021-12-21 2022-10-28 江苏德邦多菱健康科技有限公司 可多点取样的磷酸三钙流畅性初检装置及方法
CN118857842A (zh) * 2024-09-26 2024-10-29 北京中煤煤炭洗选技术有限公司 一种选煤采样装置及其使用方法

Also Published As

Publication number Publication date
AU9118991A (en) 1992-08-17
CS698690A3 (en) 1992-07-15

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