US3877587A - Discharging means for vessels for storing powder, grain and the like - Google Patents

Discharging means for vessels for storing powder, grain and the like Download PDF

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Publication number
US3877587A
US3877587A US452001A US45200174A US3877587A US 3877587 A US3877587 A US 3877587A US 452001 A US452001 A US 452001A US 45200174 A US45200174 A US 45200174A US 3877587 A US3877587 A US 3877587A
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US
United States
Prior art keywords
annular
stationary
discharging means
powder
vessel
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
US452001A
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English (en)
Inventor
Takuji Ishizaki
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.)
Mitsui Engineering and Shipbuilding Co Ltd
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Mitsui Engineering and Shipbuilding Co Ltd
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Publication date
Application filed by Mitsui Engineering and Shipbuilding Co Ltd filed Critical Mitsui Engineering and Shipbuilding Co Ltd
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Publication of US3877587A publication Critical patent/US3877587A/en
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Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G65/00—Loading or unloading
    • B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
    • B65G65/34—Emptying devices
    • B65G65/40—Devices for emptying otherwise than from the top
    • B65G65/48—Devices for emptying otherwise than from the top using other rotating means, e.g. rotating pressure sluices in pneumatic systems
    • B65G65/4809—Devices for emptying otherwise than from the top using other rotating means, e.g. rotating pressure sluices in pneumatic systems rotating about a substantially vertical axis
    • B65G65/4836—Devices for emptying otherwise than from the top using other rotating means, e.g. rotating pressure sluices in pneumatic systems rotating about a substantially vertical axis and moving material over a stationary surface, e.g. sweep arms or wheels
    • B65G65/4854—Devices for emptying otherwise than from the top using other rotating means, e.g. rotating pressure sluices in pneumatic systems rotating about a substantially vertical axis and moving material over a stationary surface, e.g. sweep arms or wheels mounted on a carriage, e.g. for movement along slit-like outlets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G65/00—Loading or unloading
    • B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
    • B65G65/34—Emptying devices
    • B65G65/40—Devices for emptying otherwise than from the top
    • B65G65/48—Devices for emptying otherwise than from the top using other rotating means, e.g. rotating pressure sluices in pneumatic systems
    • B65G65/4809—Devices for emptying otherwise than from the top using other rotating means, e.g. rotating pressure sluices in pneumatic systems rotating about a substantially vertical axis
    • B65G65/4818—Devices for emptying otherwise than from the top using other rotating means, e.g. rotating pressure sluices in pneumatic systems rotating about a substantially vertical axis and having the form of rotating tables or pans

Definitions

  • ABSTRACT Discharge means for vessels for storing powder, grain [30] Foreign Application Priority Data Mar. 19, 1973 and the like'having an inverted conical structure and an annular outlet opening at the bottom thereof, comprising a table provided below the outlet opening for 2% 214/17 D; 13 2 receiving the material in the vessel means for scraping 'f i 33 off the material dropped on the table, and means for 1 0 l I 6 conveying the dropped material from the table.
  • This invention relates to discharging means for storage vessels for storing powder, grain or granular material and provided at the lower end with an annular outlet opening.
  • the typical powder storage vessel heretofore used has an inverted conical lower half and has a circular outlet opening at the bottom thereof.
  • a feeder is provided at the outlet opening.
  • the apex angle at the outlet of the vessel is increased, the fluidity of the powder in the vessel is reduced, andthe so-called suspension bridge phenomenon will be resulted.
  • the apex angle is decreased, the height of the vessel is inevitably increased.
  • the object of this invention is to provide a powder storage vessel having a relatively large capacity without increasing the height and a discharging means suited to the vessel.
  • the discharging means comprises a stationary table and movable scrapers' provided below the outlet and movable tables and stationary scrapers provided below the said stationary table and movable scrapers, whereby the powder can be scraped down through the successive steps.
  • FIG. 1 is a schematic view outlining a storage vessel to which the discharging means of this invention is applied.
  • H6. 2 is a sectional view showing an embodiment of the discharging means according to this invention.
  • FIG. 3 is a plan view of the same, partly in section taken along line lll-lll in FIG. 2.
  • FIG. 1 in order to increase the capacity of the vessel without increasing the height of the vessel, there is proposed a vessel consisting of an inverted conical outer shell 2 and a concentric conical inner wall, as shown in FIG. 1.
  • an annular outlet opening 3 is formed at the lower end.
  • table feeders are used to take out powder discharged from such single annular outlet.
  • a table of a very large diameter must be provided, and the table feeder of the prior art type can no longer be employed.
  • This invention overcomes the disadvantage of such type of vessel.
  • FIGS. 2 and 3 Below and in the vicinity of the annular outlet 3 formed at the lower end of the storage vessel 2, there is provided a horizontal annular table 4 secured to supports 5. Below the table 4, concentric circular rails 6 and 7 are provided on the ground, on which concentric inner and outer rings 8 and 9 are supported by a number of wheels engaging with the rails. The inner and outer rings 8 and 9 are provided at one or more locations and near the surface of the table 4 with scrapers l0 and 11. Thus when the rings are rotated, along the proximity of the surface of the table 4, powder on the table is scraped off. In order to prevent the scatter of the powder, hoppers 22 and 23 are provided to surround the scrapers l0 and 11.
  • concentric inner and outer tables 14 and 15 which are rotatable about their center and are respectively provided with a number of wheels for running on respective circular rails 12 and 13.
  • the inner ring 8 and inner table 14, and also outer ring 9 and outer table 15, are driven by motors l6 and 17 through gears 18 and 19.
  • Stationary scrapers 20 and 21 are provided at one or more positions along the inner and outer tables 14 and 15 for scraping off the powder on the tables.
  • the stems of the stationary scrapers 20 and 21 are provided with respective hoppers 24 and 25 for collecting the scraped powder and dropping it onto the belt feeder 26 provided therebelow. The powder on the belt feeder 26 is finally fed onto the transfer conveyor 27.
  • the powder discharged from the annular outlet 3 of the storage vessel 2 onto the stationary annular table 4 is scraped thereoff by the movable scrapers l0 and 11 to be dropped through the hoppers 22 and 23 upon the lower inner and outer tables l4 and 15. Because the inner and outer tables 14 and 15 are rotated by the motors l6 and 17, the powder dropped on the tables 14 and 15 is scraped thereoff by the stationary scrapers 20 and 21 and dropped through the hoppers 24 and 25 onto the belt feeder 26 and is Finally collected on the transfer conveyor 27.
  • the discharging means according to the invention is suited to a storage vessel having an annular outlet and enables to realize a large doublewall conical vessel, which has comparatively small height and great capacity, and whose cone apex angle is small to ensure smooth flow of powder in it.
  • a discharging means for material containing vessels having an inverted conical structure and having an annular outlet opening at the bottom thereof, comprising a stationary annular table provided below and in the successively scraped off.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
US452001A 1973-03-19 1974-03-18 Discharging means for vessels for storing powder, grain and the like Expired - Lifetime US3877587A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1973033501U JPS5213092Y2 (en, 2012) 1973-03-19 1973-03-19

Publications (1)

Publication Number Publication Date
US3877587A true US3877587A (en) 1975-04-15

Family

ID=12388285

Family Applications (1)

Application Number Title Priority Date Filing Date
US452001A Expired - Lifetime US3877587A (en) 1973-03-19 1974-03-18 Discharging means for vessels for storing powder, grain and the like

Country Status (3)

Country Link
US (1) US3877587A (en, 2012)
JP (1) JPS5213092Y2 (en, 2012)
DE (1) DE2412894A1 (en, 2012)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4024985A (en) * 1976-09-16 1977-05-24 Sankyo Dengyo Co. Ltd. Powder feeding apparatus and method
DE2636521A1 (de) * 1976-08-13 1978-02-16 Sankyo Dengyo Kk Puderfoerdervorrichtung
US4139106A (en) * 1976-05-24 1979-02-13 Tartar Adolphe A Device for emptying a silo, and silo consisting of such a device
DE3122472A1 (de) * 1980-06-09 1982-02-04 Hitachi Sanki Engineering Co., Ltd., Tokyo Vorrichtung zum spenden von zu handhabendem gut aus einem behaelter
US4361254A (en) * 1979-11-21 1982-11-30 Hitachi Ltd. Hopper for storing free flowing solid material
US5305912A (en) * 1992-11-12 1994-04-26 Johnston Robert E Granular material flow divider

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU84780A1 (fr) * 1983-04-28 1984-11-28 Wurth Paul Sa Dispositif d'introduction de quantites dosees de matieres pulverulentes dans un fluide de propulsion pneumatique et application a un reservoir de distribution de matieres pulverulentes

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3713552A (en) * 1970-09-18 1973-01-30 A Schnyder Mechanized storage silo

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3713552A (en) * 1970-09-18 1973-01-30 A Schnyder Mechanized storage silo

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4139106A (en) * 1976-05-24 1979-02-13 Tartar Adolphe A Device for emptying a silo, and silo consisting of such a device
DE2636521A1 (de) * 1976-08-13 1978-02-16 Sankyo Dengyo Kk Puderfoerdervorrichtung
US4024985A (en) * 1976-09-16 1977-05-24 Sankyo Dengyo Co. Ltd. Powder feeding apparatus and method
US4361254A (en) * 1979-11-21 1982-11-30 Hitachi Ltd. Hopper for storing free flowing solid material
DE3122472A1 (de) * 1980-06-09 1982-02-04 Hitachi Sanki Engineering Co., Ltd., Tokyo Vorrichtung zum spenden von zu handhabendem gut aus einem behaelter
US4653674A (en) * 1980-06-09 1987-03-31 Ohbayashi-Gumi, Ltd. Device for dispensing goods through annular dispensing port
US5305912A (en) * 1992-11-12 1994-04-26 Johnston Robert E Granular material flow divider

Also Published As

Publication number Publication date
JPS5213092Y2 (en, 2012) 1977-03-24
DE2412894A1 (de) 1974-09-26
JPS49133964U (en, 2012) 1974-11-18

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