EP0059091A1 - Dispositif de réglage du débit - Google Patents

Dispositif de réglage du débit Download PDF

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Publication number
EP0059091A1
EP0059091A1 EP82300863A EP82300863A EP0059091A1 EP 0059091 A1 EP0059091 A1 EP 0059091A1 EP 82300863 A EP82300863 A EP 82300863A EP 82300863 A EP82300863 A EP 82300863A EP 0059091 A1 EP0059091 A1 EP 0059091A1
Authority
EP
European Patent Office
Prior art keywords
control member
outlet passage
flow
support surface
control
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.)
Withdrawn
Application number
EP82300863A
Other languages
German (de)
English (en)
Inventor
Leslie Stott
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0059091A1 publication Critical patent/EP0059091A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/54—Gates or closures
    • B65D90/62—Gates or closures having closure members movable out of the plane of the opening
    • B65D90/623—Gates or closures having closure members movable out of the plane of the opening having a rotational motion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/54—Gates or closures
    • B65D90/58—Gates or closures having closure members sliding in the plane of the opening
    • B65D90/587—Gates or closures having closure members sliding in the plane of the opening having a linear motion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/54—Gates or closures
    • B65D90/66—Operating devices therefor

Definitions

  • the invention relates to flow control devices, and particularly to devices for controlling the flow of powdered or granular material out of a storage device such as a hopper or silo. ,
  • a device for controlling the flow of powdered or granular material out of a storage device comprising a body arranged for mounting underneath the storage device and defining an outlet passage for the material, a control member for the outlet passage, the device having at least one material support surface adjacent the outlet passage, the support surface being positioned and shaped to support a substantial part of the pressure head exerted by the material, thus substantially reducing the pressure head acting on material tending to flow through the outlet passage and making it easier for the control member to control the flow of material through the outlet passage.
  • a first support surface at one side of the aperture may comprise a surface sloping downwardly towards the aperture.
  • a second support surface at the opposite side of the aperture may comprise a surface sloping downwardly towards the aperture at a steeper angle than the first support surface.
  • the lowermost edge of the second support surface is preferably positioned below the level of the lowermost edge of the first support surface.
  • the first support surface preferably has an undercut lip at its lowermost edge.
  • first support surface adjacent one aperture combining with the second support surface adjacent the adjacent aperture to present to the material in the storage device an upwardly facing ridge-like surface.
  • each first support surface and adjacent second support surface may be formed as an integral unit.
  • the unit may be of plastics clad metal, e.g. steel clad with high density polyethylene.
  • Other parts of the device may also be made of plastics clad metal, thus reducing weight.
  • the invention provides a device for controlling the flow of powdered or granular material out of a storage device, the flow control device comprising a body arranged for mounting underneath the storage device and defining an outlet passage for the material, and a control member for the outlet passage, the control member having a surface which faces upwardly at an inclined angle to the horizontal when the control device is mounted underneath the storage device,' the control member being movable across the outlet passage transversely to the direction of flow, to control the flow.
  • control member is such that during the said transverse movement the angle of the said surface to the horizontal varies.
  • control member is movable, from a position in which it closes the outlet passage, to progressively open the outlet passage, such movement causing the angle of the said surface to the horizontal to progressively increase.
  • the direction of flow through the outlet passage is also inclined to the horizontal.
  • the outlet passage may be such that when material is moving towards the control member it travels along a path which is inclined in a similar direction to the said surface but after passing the control member it changes direction to follow a path inclined in the opposite direction, the outlet passage thus being of a zig-zag configuration.
  • the control member may be mounted on a slide for movement across the outlet passage.
  • the control member may comprise a flat plate pivotally mounted on the slide.
  • the slide may be operated by a fluid controlled ram.
  • control member is such that the change in angle of inclination as the control member moves enables the said surface to maintain contact with a closed side of the outlet passage so that flow takes place only past that side of the control member which is remote from the closed side of the outlet passage.
  • the closure member may be spring loaded into engagement with the said closed side.
  • the said closed side may be shaped to accommodate more of the control member in the upward direction as the control member moves towards the closed side, so that the change in angle of the said surface is brought about by the spring means moving the leading edge of the control member progressively upwardly as the control member moves towards the closed side.
  • the closure members may be mounted on a common slide for movement in synchronism.
  • the body is preferably vibratable to promote the flow of material through the or each outlet passage.
  • control member of the first aspect of the invention may be as defined according to the second aspect of the invention.
  • the invention includes a storage device, e.g. a hopper or silo, fitted with a flow control device as described above.
  • a storage device e.g. a hopper or silo, fitted with a flow control device as described above.
  • the term 'storage device' is intended to include any device which supports a column of material above the control device and hence gives rise t ⁇ a pressure head of material, and may include devices other than hoppers and silos, for example feed pipes.
  • the flow control device indicated generally at 10 in Figures 1 and 2 is intended, in use, to be bolted to the bottom of a hopper 11 or similar storage device for powdered or granular material.
  • the device 10 comprises a body having a fixed frame made up of two elongate members 12 and two shorter cross members 13.
  • each outlet passage has a first part which is inclined to the left as the passage extends downwardly, and after passing the associated control member the passage changes direction and is inclined to the right, so that the passage has a zig-zag configuration.
  • an electric vibrator 24 operable to cause the movable frame 15 to vibrate in the direction of the arrows 25 shown in Figure 1.
  • the movable frame 15 is sealed to the upper frame by means of a flexible sleeve 26.
  • Each plate 20, 21 is.pivotally connected to a slide member 27 which can be moved horizontally by means of a linear actuator 28.
  • Each plate 20, 21 is fitted with a leaf spring 29 which urges the plate into contact with part 30 of the casting 16.
  • the actuator 28 is operated to move the plates 20 and 21 to the right as viewed in Figure 1. This means that the left hand side of each outlet passage opens progressively, so that material can pass along each zig-zag outlet passage, for example into a waiting container.
  • each plate 20 and 21 maintains contact with the associated portion 30 of the casting, so that the outlet passage remains closed at this side.
  • This has the advantage that material cannot get between the plates and the casting, thus adversely affecting the smooth pattern of flow along the zig-zag path, and also avoiding the possibility of a build-up of material between the plates and the parts 30 of the casting, thus possibly preventing the plates from returning to the position shown in Figure 1.
  • the device is generally very similar to that shown in Figures 1 and.2, although the frame made up of members 12 and 13 is mounted on suspension springs and is sealed to the hopper 11 by means of a flexible cushion 26a.
  • a vibrator 24 is again provided, and there are three spring loaded plate-like control members 20, mounted on a common slide, although the slide has not been shown in Figure 3 for the sake of simplicity.
  • the casting has been replaced by three first support devices 32a, 32b and 32c, and three second support devices 33a, 33b, and 33c. It will be seen that devices 32b and 33a are combined to form an integral unit, as are devices 32c and 33b.
  • the devices provide a generally similar structure to the casting 16 of Figures 1 and 2, but if the devices are analysed in more detail it will be seen that for each aperture, there is at each side of the aperture a first downwardly sloping support surface 34 and a second, more steeply inclined, downwardly sloping support surface 35.
  • the lowermost edge 36 os each second support surface is positioned below the level of the lowermost edge 37 of each first support surface 34.
  • Each first support surface 34 has a lip at its lowermost edge 36 undercut at 38.
  • the way in which the pressure head of a column of powdered or granular material acts is different to that of a column of liquid. Powdered or granular material receives a certain amount of side support and the extent to which material in the column contributes to the pressure head at the bottom of the column reduces as one moves up the column.
  • the two V-shaped areas of material 39 do not apply any pressure to the flow control device at all, since these areas are entirely supported by the side walls of the hopper 11 and by side pressure from the central bulk of material 40.
  • the pressure exerted by the bulk of material 40 is substantially taken by the support surfaces 34 and 35 and so the only material that actually applies pressure in the immediate vicinity of the outlet passages is the material in the areas designated by the reference numeral 41.
  • the arrangement of the support surfaces reduces the pressure head in the vicinity of the outlet passages substantially, and this has two important advantages. It makes it easier for the control members 20 to operate,and completely cut off flow if necessary, since they do not have to work against a substantial pressure head.
  • the rate of flow through the outlet passages is dependent on the pressure head created by the material in the regions 41, the rate of flow will be substantially constant irrespective of the height of material above the flow control device. The rate of flow will only change when the device is practically empty and the surface level of the material reaches the level of the regions 41.
  • the device can be used when it is desired to feed equal quantities of material from one storage device into a plurality of other storage devices. For instance if each of the three apertures shown in Figure 3 were arranged to feed material to each of three separate containers positioned under the device, each container would receive an equal quantity of material.
  • the three control members 20 are shown in : different positions in Figure 3 for the purposes of illustration, the control devices will of course in use all have the same position, since they are each spring loaded and all mounted on the-same support carriage.
  • the rate of flow through the apertures is governed by three factors. Firstly, the extent to which the passages are opened by movement of the control members; secondly, the angle of inclination of the upper faces of the control members; and thirdly, the amplitude of the vibration applied by the vibrator 24.
  • the above described embodiments enable the first two of these factors to be controlled simultaneously, using a very simple mechanical arrangement having very few moving parts. It is thus possible to provide very accurate and fine control over the flow of material, particularly since the effective pressure head is only that applied by the material in the areas 41, and when flow is no longer required, flow can be shut off positively with ease by returning the plates to the fully closed position.
  • the support devices, and the support frame if desired may be manufactured from plastics material which is clipped into position over metal supports.
  • the supports may for example be of stainless steel, the plastics parts.being of high density polyethylene. This provides a structure which may be one-third of the weight of an equivalent all-metal structure, and this has the advantage that a less powerful vibrator can be used.
  • any desired number of outlet passages may be provided, from one upwards.
  • a device having the desired number of outlet passages may be built up either by fabrication, or by the use of modular castings or mouldings.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
EP82300863A 1981-02-25 1982-02-19 Dispositif de réglage du débit Withdrawn EP0059091A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8105934 1981-02-25
GB8105934 1981-02-25

Publications (1)

Publication Number Publication Date
EP0059091A1 true EP0059091A1 (fr) 1982-09-01

Family

ID=10519956

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82300863A Withdrawn EP0059091A1 (fr) 1981-02-25 1982-02-19 Dispositif de réglage du débit

Country Status (1)

Country Link
EP (1) EP0059091A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1053133C (zh) * 1996-05-14 2000-06-07 西北有色金属研究院 一种铝－钛－铝钎焊料三层轧制复合板
GB2374864A (en) * 2001-04-24 2002-10-30 Terence Albert White Hopper outlet valve
KR101229594B1 (ko) * 2003-05-09 2013-02-05 교와 핫꼬 기린 가부시키가이샤 미세 결정
EP3272677A1 (fr) * 2016-07-19 2018-01-24 Whittaker Engineering (Stonehaven) Limited Ensemble de soupape, procede
CN110626643A (zh) * 2018-06-25 2019-12-31 宝山钢铁股份有限公司 一种料斗

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1329101A (en) * 1919-04-15 1920-01-27 Carl J Young Dumping-body for trucks
GB1129571A (en) * 1967-03-21 1968-10-09 Hoover Ball & Bearing Co Bottom discharge bin
DE1506918A1 (de) * 1967-05-22 1970-02-26 Huder Muehlenbau Maschinenfabr Vorrichtung zum dosierten Abgeben von Schuettguetern aus Silobehaeltern
CH542117A (de) * 1971-08-16 1973-09-30 Buehler Ag Geb Verfahren zum dosierten Abzug von Schüttgütern aus einem Hochsilo und Dosierzelle an Hochsilo zur Durchführung des Verfahrens
US3973703A (en) * 1973-06-05 1976-08-10 I.P.T. - Institute For Powder Technology Device for discharging powdery or granular material
US4174792A (en) * 1978-04-24 1979-11-20 Jones Eldon D Dispensing apparatus for a vehicle having closure gate clearing member
DE7927377U1 (de) * 1979-09-27 1980-01-31 Schultheiss, Wilhelm, 6050 Offenbach Staurost
US4200208A (en) * 1978-04-26 1980-04-29 Evans Products Company Pneumatic hopper gate

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1329101A (en) * 1919-04-15 1920-01-27 Carl J Young Dumping-body for trucks
GB1129571A (en) * 1967-03-21 1968-10-09 Hoover Ball & Bearing Co Bottom discharge bin
DE1506918A1 (de) * 1967-05-22 1970-02-26 Huder Muehlenbau Maschinenfabr Vorrichtung zum dosierten Abgeben von Schuettguetern aus Silobehaeltern
CH542117A (de) * 1971-08-16 1973-09-30 Buehler Ag Geb Verfahren zum dosierten Abzug von Schüttgütern aus einem Hochsilo und Dosierzelle an Hochsilo zur Durchführung des Verfahrens
US3973703A (en) * 1973-06-05 1976-08-10 I.P.T. - Institute For Powder Technology Device for discharging powdery or granular material
US4174792A (en) * 1978-04-24 1979-11-20 Jones Eldon D Dispensing apparatus for a vehicle having closure gate clearing member
US4200208A (en) * 1978-04-26 1980-04-29 Evans Products Company Pneumatic hopper gate
DE7927377U1 (de) * 1979-09-27 1980-01-31 Schultheiss, Wilhelm, 6050 Offenbach Staurost

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1053133C (zh) * 1996-05-14 2000-06-07 西北有色金属研究院 一种铝－钛－铝钎焊料三层轧制复合板
GB2374864A (en) * 2001-04-24 2002-10-30 Terence Albert White Hopper outlet valve
KR101229594B1 (ko) * 2003-05-09 2013-02-05 교와 핫꼬 기린 가부시키가이샤 미세 결정
EP3272677A1 (fr) * 2016-07-19 2018-01-24 Whittaker Engineering (Stonehaven) Limited Ensemble de soupape, procede
CN110626643A (zh) * 2018-06-25 2019-12-31 宝山钢铁股份有限公司 一种料斗
CN110626643B (zh) * 2018-06-25 2021-11-16 宝山钢铁股份有限公司 一种料斗

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19830728