JP2747750B2 - Indoor bulk dispenser - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an indoor storage system for removing (discharging) bulk materials such as coal, ore, feed, etc., and in particular, bulk materials (storage) in a storage tank with a roof. The present invention relates to a bulk dispenser.

[0002]

2. Description of the Related Art Conventionally, as a loading / unloading device installed in a coal storage facility of a thermal power plant or a storage yard for bulk materials such as ore, bulk materials are conventionally delivered to the center of a storage tank surrounded by a circular concrete retaining wall. A hollow concrete pillar that also serves as a hopper for the vehicle is formed, and a center post that reaches the dome is erected at the upper part of the pillar, and a semi-gate-shaped stacker girder and a reclaimer girder extending from the upper surface of the retaining wall to the center post are provided. Each of them is installed so as to be pivotable around the center post, and a vertical reclaimer of a rotating bucket chain type is drooped to a carriage traversing the reclaimer girder near the bottom of the tank, and the reclaimer girder is removed from the reclaimer girder. A device is known in which a bulk material is discharged into a central hollow concrete column via a chute provided on the inner end side of the vehicle. Example, if the real HirakiAkira 57-169710
No.).

As another device, a circular warehouse is divided into a plurality of section yards, and a vertically divided column (center post) is projected on a center support base, and a reclaimer that pivots around one column. The vertical belt conveyor is supported on the girder via a traversing cart so as to be able to move up and down, and the stacker girder is provided on the other support so as to be pivotable. When it is necessary to pay out different kinds of bulk materials in the yard, the trolley is moved to the column side and the vertical conveyor is moved upward, and then the reclaimer girder is moved together with the bulk materials in the corresponding yard. There has been known an apparatus in which the vehicle is turned to another division yard over a hill and another payout is performed (for example, Japanese Patent Laid-Open No. 55-101533).

[0004]

In each of the above-mentioned conventional apparatuses, when dispensing bulk materials, it is necessary to move a dispensing member such as a reclaimer along the girder together with the turning movement of the reclaimer girder. Becomes complicated. In addition, since a center post serving as a girder pivot axis is provided on the upper part of the central hollow concrete support or the central support base, bulk materials cannot be stacked at the center of the tank to the same height as the outer periphery of the tank, and the dispensing member is vertically Since the dispensing is performed by inserting the material into the bulk material, in particular, in the coal storage facility disclosed in Japanese Utility Model Application Laid-Open No. 57-169710, the cutting depth of the dispensing member becomes larger toward the outer periphery, and the storage is performed in order to perform the discharging at a constant flow rate. The rotation speed of the bucket chain must be changed in the radial direction of the tank, which is very troublesome to control. In addition, in this coal storage facility, if there is a wall in the turning direction of the reclaimer girder, it is not possible to pay out the bulk material at the corner formed by the wall and the bottom surface using the bucket chain.

The apparatus described in Japanese Patent Application Laid-Open No. 55-101533 is of a type in which bulk materials are scooped up by a bucket wheel into a vertical conveyor. There is a problem that the height of the building is increased because the lifting frame of the conveyor protrudes largely upward and the columns that pivotally support the girder of the stacker and the reclaimer are also long.

The present invention solves the above-mentioned problems and has a structure capable of improving the packing efficiency of bulk materials, has no leftover at the bottom of the tank, and can stabilize the dispensing amount. It is an object of the present invention to provide an indoor bulk dispenser that is easy to maintain and can be used for blending or sorting out bulk materials.

[0007]

SUMMARY OF THE INVENTION An indoor bulk dispensing apparatus according to the present invention includes a girder bridged from a dispensing side wall to an opposite side wall of a bulk storage tank, and a girder pivotally attached to a dispensing side end of the girder. And, the tip is formed to have a length with a little gap with respect to the opposite side wall portion, and a bucket elevator formed so that a halfway portion is bent downward, and is held on the girder , And an up-and- down device for turning the base end portion from the bent portion of the bucket elevator downward with the base end as a fulcrum, and rotating the tip end of the bucket elevator
A guide roller provided so as to be, the bucket elevator
Is provided at the intermediate part of the data, and the intermediate part is bent upward.
And a stopper piece which way not formed to a length such as to have a little clearance with respect to the bottom surface of the lower end the reservoir portion from the bent portion to the base end portion is in a substantially vertical state of the bucket elevator , The guide roller is
Roller contacts the bottom surface so that the bucket
Prevents the abutment between the beta bucket and the bottom of the storage tank
It is configured to stop.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view of a rectangular indoor bulk dispenser (reclaimer) according to one embodiment of the present invention.
FIG. 2 is a partial top view of FIG. The storage tank 1 is configured as a rectangular tank having a substantially rectangular cross section and extending linearly, and the upper portion of the tank 1 is covered by a roof 2 over the entire length.
The lower half of the storage tank 1 is buried under the ground. The reclaimer girder 3 is mounted on the upper surfaces of both side walls 1a and 1b of the storage tank 1 via wheels and rails so as to bridge the storage tank 1 in the width direction. Is driven. On the upper surface of one of the side walls of the storage tank 1, a receiving conveyor 4 for bulk materials or the like is laid, and on the upper surface of the other side wall, a discharging conveyor 5 is laid along the longitudinal direction of the storage tank 1. The receipt of the bulk material 15 into the storage tank 1 will be described later with reference to FIG.

At the upper end of the reclaimer girder 3 on the dispensing conveyor 5 side, two sprockets 6 and 7 spaced apart in the longitudinal direction of the girder are pivotally supported, surround these sprockets 6 and 7 and discharge the tip. A cover chute 8 serving as a cover opened so as to face the conveyor 5 is a reclaimer girder 3.
It is provided in. At the lower end of the reclaimer girder 3 facing the storage tank 1 on the side of the dispensing conveyor 5, a bendable swinging bucket elevator 9, which is an essential part of the present invention, is provided with a bracket 10.
Has been pivoted through. The oscillating bucket elevator 9 has a first bucket ladder (hereinafter referred to as a first ladder) 11 on the distal end side and a proximal end side (a side pivotally connected to the reclaimer girder 3) at a substantially intermediate portion (depending on the shape of the storage tank 1). It is divided into a second bucket ladder (hereinafter referred to as a second ladder) 12 and is joined so as to bend downward at this division. The first and second ladders 1 are folded back at the tip of the first ladder 11.
A plurality of buckets 13 are attached to the outer periphery of the endless chain wound around sprockets 6 and 7 in the cover chute 8 along the cover chute 1 and 12, and the sprocket is driven by a bucket driving device 14 (FIG. 2) on the reclaim girder 3. By rotating one of the endless chains 6 and 7, the bucket 13 held by the endless chain rotates in one direction to scoop up the loose objects 15 in the storage tank 1, and the cover chute 8 is positioned at the position of the outer sprocket 6. Pays out the bulk material 15 onto the payout conveyor 5 from the factory.

At the end of the first ladder 11, a guide roller 16 which rotates in contact with the side wall 1a and the bottom wall 1c of the storage tank 1 opposite to the payout side is attached. Further, stoppers 17 and 18 are attached below the respective ladders 11 and 12 at a joint portion between the first ladder 11 and the second ladder 12.
ing. Stoppers 17 and 18, when the engagement portion is extended to the straight state, engage so that the end portion Dooshi of both stoppers 17 and 18 are overlapped, thereby swinging bucket elevator 9 the engagement The part does not bend upward.

An elevating winch 19 driven by an electric motor is provided at an intermediate portion in the longitudinal direction of the reclaimer girder 3, and a sheave at a distal end of a wire 20 pulled out from the winch 19 is connected near the distal end of the second ladder 12. A pressing cylinder 21 is pivotally supported on the reclaimer girder 3 at a position closer to the dispensing conveyor 5 side from the hoisting winch 19, and the tip of the piston rod is connected to a middle part of the second ladder 12. Further, a stator and a lining 22 are attached to the lower surface (back surface) of the second ladder 12 on the bucket going side so that the bulk material 15 does not fall from the bucket 13.

The swing bucket elevator 9 includes first and second
In a state where the ladders 11 and 12 are extended in a straight line, the tip of the first ladder 11 is formed to have a slight gap with respect to the side wall 1a of the storage tank 1 opposite to the payout conveyor 5. In addition, the second ladder 12 is in the storage tank 1 in a substantially vertical state.
The bottom wall 1c has a length such that a small gap is formed at the tip thereof with respect to the corner on the side of the payout conveyor 5. Therefore, when the tip of the second ladder 12 is located at the corner of the bottom wall 1c of the storage tank 1, the first ladder 11 lies down along the wall surface of the bottom wall 1c as shown by the solid line in FIG. Becomes

When the bulk material 15 is stored up to the substantially upper surface of the storage tank 1, the bulk material is dispensed by first placing the swinging bucket elevator 9 horizontally along the upper surface of the bulk material 15 in a bucket driving device. The payout is started by 14, the wire 20 is paid out from the undulating winch 19 at a constant pitch, and the payout is performed while traveling the girder 3 . The swinging bucket elevator 9 descends by its own weight with the payout side end serving as a fulcrum, and the first and second ladders 19 are raised and lowered by a winch 19 until the guide roller 16 at the tip of the first ladder 11 reaches the bottom wall 1c of the storage tank 1. The dispenser continues dispensing along the surface layer of the bulk material 15 in a straight state while supporting the joint portion of 11 and 12, and after the guide roller 16 of the first ladder 11 contacts the bottom wall 1c, the swing bucket elevator 9 is rotated. Is dispensed in a state of being bent downward at the joint portion, and finally the first ladder 11 is connected to the bottom wall 1c.
It is placed on the top and the bottom is roughened. The above-mentioned bending at the joint portion is caused by the own weight action of the swing bucket elevator 9,
Depending on the type of loose material, a certain pressing force is applied to the second ladder 12 by the pressing cylinder 21 on the reclaimer girder 3 in order to make the bending more reliable, and the second ladder 12 is forcibly bent.
At this time, the hoisting winch 19 is set to a state in which a weak hoisting torque is applied by the primary voltage control so as to cope with the extension and loosening of the wire 20.

In the above embodiment, since the guide roller 16 at the tip of the swinging bucket elevator 9 rolls while contacting the bottom wall 1c, the bending of the intermediate portion is smoothly performed and the guide roller 16 and the bottom wall 1c are connected to each other. Bucket 1 in contact with
The contact between the tooth tip of No. 3 and the bottom wall 1c is prevented. In the final stage, the bucket 13 of the first ladder 11 moves along the bottom wall 1c and rises along the side wall 1b on the second ladder 12 through the corner of the bottom wall 1c, so that the loose material 15 is left behind. Does not occur.

The storage tank 1 is provided with a bulk storage device 30 in addition to the above-described dispensing device. FIG. 3 is a front view of a stacking device (stacker) 30 provided in the same storage tank 1. Like the reclaimer girder 3 of the dispensing device, a stacker girder 31 which bridges the storage tank 1 in the width direction and can run in the longitudinal direction of the storage tank 1 is provided, and a stacking chute 32 is provided on the stacker girder 31. The scraper truck 33 is provided so as to reciprocate in the longitudinal direction of the girder by the traversing device 34. A tripper 35 is interposed between the receiving conveyor 4 for the bulk material 15 and the stacker girder 31 on one side of the storage tank 1, and the bulk material 15 is stacked on the scraper cart 33 via the transport belt 36 on the stacker girder 31 by the tripper 35. Stowage is uniformly performed from the attached chute 32 to near the upper surface of the storage tank 1.

FIG. 4 is a schematic overall plan view of a loading / dispensing facility in which the dispensing device (reclaimer) 23 described in FIGS. 1 and 2 and the stacker 30 in FIG. 3 are alternately arranged in the longitudinal direction of the storage tank 1. It is. A receiving conveyor 4 and a discharging conveyor 5 are installed on both sides of the storage tank 1. In this embodiment, the inside of the storage tank 1 is partitioned into a plurality of pieces by a partition wall 24 in the longitudinal direction, and a plurality of kinds of bulk materials are separated and stacked. In addition, desired bulk materials can be dispensed singly or as a blend of several types.

FIG. 5 is a longitudinal sectional view of a circular bulk loading / unloading device according to another embodiment of the present invention. Circular storage tank 2
5 has a lower half buried under the ground, and a central central side wall 26 formed at the center thereof at substantially the same height as the outer peripheral side wall 25 a of the storage tank 25. At the lower end of the central side wall 26, there is provided an underground delivery conveyor 27 which is connected to an appropriate delivery conveyor on the ground. At the upper end of the central side wall 26, a short support 28 is provided upright concentrically with the side wall 26. The reclaimer girder 3 extends in a radial direction from the upper surface of the central side wall portion 26 to the upper surface of the side wall 25a on the outer periphery of the storage tank. It is fixed to the supported reclaimer side connecting member 29. An oscillating bucket elevator 9 pivotally attached to a lower portion on the base end side of the reclaimer girder 3 and capable of bending downward at an intermediate portion, a guide roller 16 provided at a tip end of the elevator 9, an undulation provided on the reclaimer girder 3 The structure of the winch 19 and the pressing cylinder 21, the sprockets 6 and 7 on the base end side upper side of the reclaimer girder 3, the cover chute 8 facing the upper payout port of the short support 28, and preventing the swinging bucket elevator 9 from bending upward. The configuration of the stoppers 17, 18 and the like provided at the joint part of the middle position of the elevator for performing the same operation is the same as that of the rectangular dispensing device shown in FIG.
In the case of the circular type shown in FIG. 5, since the reclaimer girder 3 is connected to the short support 28 at the center of the storage tank, the girder 3 is driven by a girder traveling drive device (not shown) so that the girder 3 is formed in a circular shape on the wheels and the upper surface of the storage tank. The swing bucket elevator 9 pivots around the short support 28 via the rail, and accordingly, the swinging bucket elevator 9 also rotates around the short support 28 in the storage tank. Bulk 1
As in the case of the rectangular type, the dispensing of 5 starts with the swinging bucket elevator 9 extending horizontally on the upper surface of the storage tank. Dispensing proceeds while scraping the surface of the deposited layer while descending.

In the circular storage tank 25, a stacker girder 31 similar to that described with reference to FIG. 4 extends radially from the upper surface of the central side wall 26 to the upper surface of the side wall 25a on the outer periphery of the storage tank at a position where it does not interfere with the reclaimer girder 3. The stacker girder 31 has a base end (tank center side) fixed to a stacker-side connecting member 37 pivotally supported by the short support 28. Therefore, the stacker girder 31 is turned around the short support 28 by a driving device (not shown). The receiving conveyor 38 for the bulk material 15 is guided onto the roof 40 of the storage tank 25, and the bulk material 15 sent from the receiving conveyor 38.
Is a short post 28 from an input port provided in the center of the roof 40.
Is fed into the conveyor belt 36 on the stacker girder 31 through the receiving chute 39 rotatable around the axis of the scraper truck 33, and is uniformly loaded from the loading chute 32 of the scraper truck 33 to near the upper surface of the storage tank 25.

FIG. 6 is a schematic overall plan view of a multiple type loading / discharging facility in which six round bulk loading / unloading devices 41 shown in FIG. 5 are arranged in a bulk yard. Receiving conveyors 38 of each of the circular bulk stowage / dispensing devices 41 are individually connected to transport conveyors 42 passing through the centers of the devices, and are stacked by the stackers 30 of the respective circular storage tanks 25. In this case, a plurality of types of bulk materials can be sorted and stored for each storage tank 25 by operating the opening / closing valve 43 at the connection between the transport conveyor 42 and the receiving conveyor 38 of each storage tank 25. The dispensing conveyors 27 of the storage tanks 25 are assembled on one dispensing side conveyor 44 that passes by the side of the equipment. By operating the reclaimer 23 of the tank 25 simultaneously, finally, several kinds of bulk materials are blended and taken out, or only the desired kind of bulk material is individually taken out by operating only the reclaimer 23 of a necessary tank. be able to.

[0020]

As described above, according to the present invention, the payout bucket elevator is placed laterally on the upper surface of the pile of bulk materials at the start of the payout, and the payout elevator is always driven to scoop up from the upper surface of the layer. Since the occupied portion of the swinging bucket elevator does not reduce the stowage volume, the stowage can be performed with the surface layer flattened to the entire upper surface of the storage tank. Even if the storage tank is formed to have a substantially rectangular cross-sectional shape, the swinging bucket elevator is bent downward in the middle and follows the bottom wall and the side wall, so that the payout is effectively performed to the corner of the tank bottom. In addition, stacking without dead space and dispensing without leftovers can be performed, and the storage tank can be reduced by that amount, so that efficient storage equipment can be realized in a small space storage yard. By providing a partition in the storage tank or arranging a plurality of storage tanks side by side, a plurality of types of bulk materials can be stored separately and paid out individually or in a blend of several types.

A fixed amount of payout can be performed only by the movement of the swinging bucket elevator up and down, the bucket feed, and the entire movement (turning) by the girder, and complicated control as in the related art becomes unnecessary. Automated operation becomes easy. In addition, the bending operation of the bucket elevator uses its own weight
No special driving device is required for bending.
In addition, since the swinging bucket elevator is not buried in the bulk, installation, inspection, and maintenance are facilitated. Due to the high loading / unloading efficiency, the equipment can be small and covered, so that there is no environmental problem such as dust and noise. INDUSTRIAL APPLICABILITY The present invention is useful for coal storage facilities of coal-fired power plants, bulk material yard facilities of ironworks and cement factories, and storage facilities for grains and feeds.

[Brief description of the drawings]

FIG. 1 is a front sectional view of a rectangular indoor bulk dispenser according to one embodiment of the present invention.

FIG. 2 is a partial top view of FIG. 1;

FIG. 3 is a front sectional view of a stowage device provided in the rectangular storage tank shown in FIG. 1;

FIG. 4 is a schematic overall plan view of a rectangular loading / unloading facility including a plurality of reclaimers and a stacker.

FIG. 5 is a longitudinal sectional view of a circular stowage / dispensing device according to another embodiment of the present invention.

6 is a schematic overall plan view of a multi-stack type loading / unloading facility in which six circular loading / unloading devices shown in FIG. 5 are arranged in a bulk yard.

[Explanation of symbols]

 Reference Signs List 1 rectangular storage tank 3 reclaimer girder 5 payout conveyor 9 swing bucket elevator 11 first ladder 12 second ladder 16 guide roller 17, 18 stopper 19 undulating winch 21 pressing cylinder 23 reclaimer 24 partition wall 25 circular storage tank 26 central side wall 28 Short prop 30 Stacker 31 Stacker girder 33 Scraper truck

Claims (1)

(57) [Claims] 1. A girder bridged from a dispensing side wall to an opposite side wall of a bulk storage tank, and a girder pivotally connected to the dispensing side end of the girder, and a tip of the girder is slightly spaced from the opposite side wall. A bucket elevator formed so as to have an intermediate portion bent downward , and a base end portion held on the girder and extending from a bent portion of the bucket elevator. An up-and- down device that pivots downward at an end as a fulcrum, and rotatable at the tip of the bucket elevator
A guide roller provided in Noh, the bucket elevation
The intermediate part is provided at the intermediate part, and the intermediate part does not bend upward.
And a stopper piece to odd, is formed to a length such as to have a little clearance with respect to the bottom surface of the lower end the reservoir portion from the bent portion to the base end portion is in a substantially vertical state of the bucket elevator , The guide roller is a guide roller.
When the bucket elevator contacts the bottom surface,
The collision between the bucket of the rotor and the bottom of the storage tank
An indoor bulk dispensing device, characterized in that: