Classifications

• • 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
  • B65G65/36—Devices for emptying from the top
  • B65G65/365—Devices for emptying from the top comprising a vertical passage located inside the container
• • 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
  • B65G65/36—Devices for emptying from the top
  • B65G65/38—Mechanical devices

Definitions

• the invention relates to a silo with a circular plan for bulk goods and a central, torsionally rigid support column for a filling device which can be loaded from above and rotated about the central axis, and to a cross conveyor which can be raised and lowered on the support column and rotatable about the support column and which is arranged by a plumb line telescopically extendable filling tube is connected to the filling device, the disk-shaped support column being provided on its periphery with guide rails for a lifting and rotating frame carrying the cross conveyor and a central emptying shaft.
• a filling device and a crane bridge with the cross conveyor are rotated around the central axis of the silo, the bulk material falling down through the filling tube reaching just above the filling level and from the horizontal guided cross conveyor is transported radially outwards.
• the cross conveyor which is designed as a double screw conveyor, is raised, keeping its horizontal position.
• the two screws of the cross conveyor are driven in opposite directions in such a way that they convey the bulk material radially inwards, where it falls down over ring disks of the support column into a discharge shaft and is removed there by means of a screw conveyor.
• the annular disks are arranged columnar at a distance, and their horizontal annular surface is at least so wide that the bulk material remains on it according to its pouring cone and only falls into the emptying shaft through the action of the twin-screw conveyor which transports radially inwards.
• the cross conveyor is attached to the crane bridge with lifting ropes, which on the one hand is rotatably mounted at the head end of the support column and on the other hand is supported with its outer end on an annular crane runway.
• the arrangement of a gantry crane with a crane runway attached to the silo wall requires a correspondingly robust, expensive silo wall and is therefore unsuitable for medium-sized silos with a diameter of up to approximately 15 m.
• a scraper belt is provided as a cross conveyor, which is attached to a lifting frame guided by the support column and attached to the slewing gear and hangs on at least one lifting rope.
• the hoisting rope also hangs on a crane bridge, which is supported on the outside on a circular crane runway.
• the emptying takes place outside the central support column by means of a floor pulling device, an expanding bulk material hopper being formed, into which the bulk material is admitted by means of the scraper belt which transports radially inwards.
• This version is not suitable for emptying through a central shaft formed by the support column in connection with ring washers.
• the invention is based on the object. to provide a simpler and cheaper cross conveyor in a medium-sized silo of the generic type which does not require any support on a circular crane runway.
• At least one clearing arm which is curved in the horizontal plane and extends approximately to the silo wall, is attached to the rotating part of the lifting and bogie.
• the clearing arm When the silo is being filled, the clearing arm is rotated around the support column in such a way that with its convex outer edge it pushes the bulk material outwards and distributes it. For emptying, however, the clearing arm is rotated in the opposite direction, so that with its concave inner edge it directs the bulk material inwards and pushes it through the disc elements of the support column into the emptying shaft. Due to the curved design, the thrust forces on the clearing arm are transmitted at an acute angle in a favorable manner. The rigid attachment of the clearing arm to the rotating part of the lifting and bogie provides precise guidance so that better distribution and clearing of the bulk material is achieved.
• Two clearing arms are preferably arranged diametrically opposite one another on the rotating part of the lifting and rotating frame.
• a suitable lifting and bogie suitably consists of a ring-shaped lifting frame suspended from lifting gear and resting on the guide rails, on which is mounted a bogie carrying the clearing arm or arms, which is connected via a sprocket to a turning gear attached to the lifting frame is.
• the telescopically extendable filling tube can be mounted on a side arm of the lifting and bogie and on a screw conveyor which is fastened to the filling device in a projecting manner.
• FIG. 2 shows the subject of FIG. 1 in a cross section along line I - I
• FIG. 3 shows the central support column of the object of FIG. 1 in a larger representation
• Fig. 4 shows the subject of Fig. 3 in a section along line II - II.
• FIGS. 1 and 2 shows a medium-sized silo, whose diameter can usually be up to 10 m.
• the silo 1 has a circular plan through a cylindrical wall.
• a floor 2 and a roof 3 are assigned.
• Silos of this type are increasingly being used where, on the one hand, the purpose of environmental protection is to prevent displacement by wind and, on the other hand, protection of the contents of the container is required, or intermediate storage of difficult-to-flow bulk materials. goods is required.
• a torsion-resistant support column 4 is arranged in the vertical central axis and consists of a helical band 5.
• Guide rails 6 for a lifting and bogie 13 are fastened to the circumference of the support column 4, and the helical band 5 forms one inside _ c _
• a lifting and bogie 13 is guided, which consists of a lifting part 14 and a rotating part 17.
• the lifting part 14 is suspended from two lifting cables 16 which are driven by two lifting mechanisms 15.
• the rotating part 17 can be rotated around the lifting and lowering lifting part 14 by means of a rotating mechanism 18.
• Two rotating arms 19 are fastened diametrically opposite one another on the rotating part 17. These clearing arms 19 are curved and project with their free end to just below the silo wall.
• the curve shape running in the horizontal plane can be different.
• a cycloid shape is provided, for example; However, a curve in the manner of a circular involute or the section of a circular arc, an ellipse, parabola or the like is also suitable.
• two or more clearing arms 19 are arranged, their bulge points in the same direction of rotation.
• Under the support column 4 there is an emptying opening 20 and an emptying device (not shown) in the bottom 2.
• FIGS. 3 and 4 three radially lying and perpendicular stiffening walls 22 are arranged within the reversible band 5, which are in turn fastened to a central tube 21, which can be set up as an inspection shaft if necessary.
• the guide rails 6 are in radial alignment with the stiffening walls 22 External circumference of the helical band 5 attached. This structure creates a torsion-resistant and kink-resistant support column 4.
• the filling device 9 'shown in FIG. 1 consists of a tube arranged perpendicular to a rotary bearing, through which the screw conveyor 10 projects horizontally. With the help of the rotating mechanism 11, the filling device 9 can be extended with the screw conveyor 10 and the vertically telescopic extension arranged thereon
• the screw conveyor 10 is equipped with a drive motor 24.
• the annular lifting part 14 with rollers lies against the three tubular guide rails 6 of the support column 4, so that it is guided perpendicularly when the lifting cables 16 are actuated .
• the rotating part 17, which is rotatably mounted on the lifting part 14, is provided with a toothed ring which is in engagement with a pinion of the rotating mechanism 18.
• the two clearing arms 19 are rigidly attached to the rotating part 17.
• a side arm 23 is attached to the rotating part 17, to which the lower end of the vertically telescopically extendable filling tube 12 is fastened.
• the bulk material is fed from above through the inlet tube 8 of the filling device 9, the screw conveyor 10 of which transports the bulk material into the vertical filling tube 12, in which it falls down onto the surface of the bulk material.
• the two clearing arms 19 are rotated around the support column 4 in such a way that their convex outer edge pushes the bulk material obliquely outwards and distributes it over the silo cross section.
• the filling device 9 and the rotating part 17 of the lifting and bogie 13 are rotated synchronously in the same direction.
• the lifting and bogie 13 is raised by a filling layer.
• the bulk material in the area of the support column 4 slides onto the helical belt 5 according to its bulk cone, but not into the emptying shaft 7.
• the clearing arms 19 are rotated in the opposite direction about the central axis of the support column 4, so that they steer the bulk material inwards with its concave inner edge and push it through the passages of the helical band into the emptying shaft 7.
• the filling device 9 and the rotating part 17 of the lifting and bogie 13 also run synchronously during the emptying process.
• the lifting part 14 is lowered layer by layer in accordance with the bulk discharge.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
• Catching Or Destruction (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=6242497

Family Applications (1)

Country Status (7)

Cited By (2)

Families Citing this family (2)

Citations (3)

Family Cites Families (4)

• 1984
  • 1984-08-07 DE DE19843429023 patent/DE3429023A1/de active Granted
• 1985
  • 1985-06-22 AU AU45469/85A patent/AU4546985A/en not_active Abandoned
  • 1985-06-22 WO PCT/EP1985/000303 patent/WO1986001185A1/de not_active Application Discontinuation
  • 1985-06-22 EP EP19850903255 patent/EP0190177A1/de not_active Withdrawn
  • 1985-06-22 JP JP60502993A patent/JPS61502887A/ja active Pending
• 1986
  • 1986-03-26 DK DK143486A patent/DK143486A/da not_active Application Discontinuation
  • 1986-04-03 NO NO861314A patent/NO861314L/no unknown

Patent Citations (3)

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