JP7278533B2 - Gravity storage warehouse - Google Patents

Description

The present invention relates to a gravity storage warehouse for temporarily storing and discharging solids.

Biomass power generation facilities generally use a mechanical discharge container equipped with a large screw-type auger or a sweep as a container for primary storage and discharge of biomass fuel (for example, Patent Document 1 below). Such a mechanically-discharged container has a high degree of bridging-proof reliability and easy adjustment of the discharge rate.

JP 2017-137169

However, mechanically drained containers are expensive. In addition, the mechanical discharge type container has the drawback that it cannot be discharged when a failure occurs and that it takes a relatively long time to deal with the failure. For this reason, it may be desirable to employ a gravity flow vessel. On the other hand, the gravity-flow type container has the disadvantage that bridging is more likely to occur than the mechanical discharge type container. Another disadvantage is that small vessels (eg, hoppers), whether mechanically discharged or gravity-fed, cannot store large amounts of biomass fuel. In addition, it is desirable that such a storage facility is easy to carry out maintenance work such as removing bridges when bridging occurs and confirming whether or not bridging has occurred. Such problems are not limited to containers for biomass fuel, but are common to various storage facilities for storing solid matter.

For these reasons, it is desired to provide a gravity flow storage facility that can store a large amount of solid matter and that is less susceptible to bridging. Furthermore, it is desirable to be able to perform maintenance work easily.

The present invention has been made to solve at least part of the above problems, and can be implemented, for example, as the following modes.

According to a first aspect of the present invention, a gravity storage warehouse for temporarily storing and discharging solids is provided. This storage warehouse has a floor on which a discharge port is formed, and a partition placed directly above the discharge port, a non-filled space not filled with solids is formed directly below the partition, and the solids and a partition part that partially partitions the internal space of the storage warehouse so that the filling space in which the gas is filled and the discharge port communicate with each other. The storage warehouse is configured so that a person can enter and exit the unfilled space even when the filled space is filled with solid matter.

Such storage warehouses can store a large amount of solid matter compared to small-scale containers such as hoppers. Moreover, due to the formation of the non-filling space, it is possible to suppress the weight of the solid matter in the storage container from acting on the solid matter existing in the vicinity of the discharge port. Therefore, it is possible to suppress the formation of bridges near the outlet. Furthermore, even if the filled space is filled with a solid object, people can enter and leave the unfilled space, so maintenance work (for example, removal of bridges when bridges occur, Confirmation of the presence or absence of the generation of gas, removal of solid matter remaining on the flat part when emptying the storage warehouse, etc.) can be easily performed in the unfilled space.

According to a second aspect of the invention, in the first aspect, the storage warehouse comprises an outer wall and an inner wall extending from the inner surface at a predetermined height of the outer wall to the floor. A filling space is formed inside the inner wall. Between the inner wall and the outer wall is formed an outside maintenance space, which is isolated from the filling space and accessible to people. According to such a configuration, maintenance work can be performed from outside the charging space, thereby improving the convenience of maintenance. For example, when a bridge elimination device (for example, an air blaster, a hammering device, etc.) is installed in the outer maintenance space, maintenance work for the bridge elimination device can be easily performed in the outer maintenance space. In the present application, the term “outer wall” refers to a wall that forms the outermost space having a storage function, and does not necessarily refer to a wall that contacts the outside air. For example, when a storage warehouse and an office building are installed side by side, the wall separating the storage warehouse and the office building may be the "outer wall".

According to the third form of the present invention, in the second form, the unfilled space communicates with the outer maintenance space without passing through another space. According to this form, it is possible to improve the efficiency of the worker's flow line.

According to the fourth aspect of the present invention, in the second or third aspect, the outer maintenance space is formed over the entire circumference of the storage warehouse. According to this configuration, maintenance work can be performed at any location on the outer periphery of the storage warehouse, which improves convenience. In addition, since the area of the floor positioned within the filling space is reduced, the residual amount of solid matter (the amount remaining in the flat portion without being discharged through the discharge port) can be reduced. As a result, the load of maintenance work (more specifically, residue removal work) is reduced. In addition, in this application, "periphery of storage warehouse" refers to the perimeter of a space having a storage function.

According to a fifth aspect of the present invention, in the fourth aspect, the outer wall has a cylindrical shape and the inner wall has an inverted truncated cone side shape. According to this form, the lower end of the inner wall can be brought closer to the discharge port. As a result, the area of the floor located in the filling space is reduced, and the residual amount of solid matter can be further reduced. Moreover, since the solid matter is guided to the discharge port along the inner wall, the flow of the solid matter toward the discharge port is promoted, and bridging is less likely to occur.

According to the sixth aspect of the present invention, in the fourth or fifth aspect, the partition is installed across the inside of the inner wall. According to this configuration, the area of the floor positioned within the filling space is reduced, and the amount of residual solid matter can be further reduced.

According to the seventh aspect of the present invention, in any one of the first to sixth aspects, the number of partitions is one. According to this form, the structure of the storage warehouse can be simplified. Moreover, the size of one partition (in other words, the size of the non-filling space) can be made larger than when there are a plurality of partitions. Therefore, it becomes easy to secure a large width of the maintenance passage in the non-filling space, and the convenience of the maintenance work is improved.

According to an eighth aspect of the present invention, in any one of the first to seventh aspects, the partition extends to the floor. The partition has an opening for communicating the filling space and the discharge port. According to this form, the partition can be supported by the floor, so the structure of the storage warehouse can be simplified compared to the case where the partition is supported from above. Moreover, since a support structure for supporting the partition from above is not required, the support structure does not cause bridges.

According to a ninth aspect of the present invention, in the eighth aspect, the partition, viewed in longitudinal section, is triangular with first and second faces angled obliquely to the floor. have a shape. Apertures are formed in both the first surface and the second surface. According to this form, no solid substance remains on the partition. The inclination angle of the inner wall with respect to the floor and the inclination angles of the first surface and the second surface with respect to the floor may be the same. With this configuration, the direction in which the solid object moves toward the discharge port along the inner surface of the inner wall coincides with the opening direction of the openings formed in the first surface and the second surface, respectively. The flow of solids is promoted and bridging is less likely to occur.

According to the tenth form of the present invention, in the eighth or ninth form, the lower end of the opening is positioned at least at the same level as the upper surface of the floor in the region outside the first surface and the second surface. . According to such a configuration, no space is formed below the opening for the solids to remain. Therefore, the residual amount of solid matter can be further reduced.

According to an eleventh form of the present invention, in any one of the eighth to tenth forms, the partition part is configured to allow the solid material to flow from the opening toward the discharge port when the angle of repose of the solid material is 60 degrees. In the unfilled space, a passage with a width of 1 m or more that does not interfere with is configured to be secured. According to such a configuration, even without providing a deck or the like for avoiding interference between workers and solid objects, it is possible to secure the minimum width of the maintenance passage in the non-filled space that does not interfere with solid objects.

According to a twelfth aspect of the present invention, in any one of the first to eleventh aspects, the discharge port is provided with a mesh-structure lid. According to such a configuration, it is possible to prevent a worker from falling from the discharge port while ensuring the discharge function of the discharge port.

According to the thirteenth form of the present invention, in any one of the first to twelfth forms, the discharge port is formed without steps on the floor in the unfilled space. According to such a configuration, the worker can easily discharge the solid matter scattered on the floor in the unfilled space to the discharge port.

According to the fourteenth mode of the present invention, in any one of the first to thirteenth modes, the storage warehouse has a first warehouse entrance and a second warehouse entrance for entering and exiting the storage warehouse. A line of flow is set linearly to enter the unfilled space through the first warehouse entrance and exit the storage warehouse from the unfilled space through the second warehouse entrance. According to this embodiment, when a plurality of such storage warehouses are installed, if the plurality of storage warehouses are arranged so that the linear flow lines of each storage warehouse are aligned, the worker can operate the plurality of storage warehouses. Maintenance work can be performed while walking in a straight line over the entire area, and the work flow line is made more efficient.

BRIEF DESCRIPTION OF THE DRAWINGS It is sectional drawing which shows schematic structure of the warehouse for storage of 1st Embodiment of this invention. It is a perspective view which shows the external appearance of the warehouse for storage, and shows the inside in see-through|perspective. Figure 2 is a perspective view, partially in section, of the storage warehouse of Figure 1; FIG. 2 is a perspective view of the storage warehouse of FIG. 1, partially cut away to show the internal structure; It is an enlarged cross-sectional view of the vicinity of the outlet. FIG. 10 is a cross-sectional view showing a modification of the structure near the opening of the partition; It is a sectional view showing a schematic structure of a warehouse for storage of a 2nd embodiment of the present invention. It is a sectional view showing a schematic structure of a warehouse for storage of a 3rd embodiment of the present invention.

FIG. 1 is a cross-sectional view showing a schematic configuration of a storage warehouse 10 (hereinafter simply referred to as a warehouse) as one embodiment of the present invention. FIG. 2 is a perspective view of the warehouse 10, showing the inside of the warehouse 10 in perspective. FIG. 3 is a perspective view of half of warehouse 10, with a portion of warehouse 10 shown in cross section. FIG. 4 is a perspective view of half of the warehouse 10 shown in FIG. Warehouse 10 is a gravity flow warehouse for temporarily storing and discharging solids. In other words, the warehouse 10 does not have a mechanical device for discharging the solid matter stored therein from the discharge port. The warehouse 10 is, for example, a biomass power generation facility where wood biomass fuel (for example, wood chips (length 40 mm x width 40 mm x thickness 10 mm), wood pellets (diameter 6 to 10 mm x length 30 mm), palm shell (hemisphere with a diameter of 10 mm etc.) may be temporarily stored. The warehouse 10 is made of iron plates in this embodiment, but may have any structure. For example, warehouse 10 may include a concrete structure.

The warehouse 10 has a cylindrical profile (see FIG. 2), and FIG. 1 shows a vertical cross-section cut in half. The other half of warehouse 10, not shown, also has the same structure as warehouse 10 shown in FIG. As shown in FIG. 1, the warehouse 10 includes an outer wall 20, a floor 30, an inner wall 40, and partitions 50. As shown in FIG. The outer wall 20 has a cylindrical shape. The outer wall 20 actually extends higher than shown in FIG. 1 and is closed at its upper end by a roof. A filling space 21 filled with a solid material is formed inside the outer wall 20 . A solid object is supplied to the filling space 21 from a dropping port (not shown) provided near the upper end of the outer wall 20 via a conveyor, a chute, or the like. Without limitation, the outer wall 20 may have a size of, for example, 15m in diameter by 40m in height.

As shown in FIG. 3, the floor 30 is formed with a plurality of discharge ports 31 . The outlets 31 are formed in two rows. A partition 50 is arranged directly above the discharge port 31 . In this specification, "directly above" and "directly below" refer only to positions when viewed in the vertical direction, and are irrelevant to whether or not they are adjacent to each other in the vertical direction. In other words, it does not refer to whether or not there is another member or space between the partition portion 50 and the discharge port 31 .

The partition part 50 partially partitions the internal space of the warehouse 10 . As a result, an unfilled space 51 that is not filled with solid matter is formed directly below the partition 50 . In this specification, the terms "directly below" and "directly above" refer not only to the position when viewed in the vertical direction, but also to having a positional relationship of being adjacent in the vertical direction. That is, the non-filling space 51 is directly below the partition 50, and the partition 50 and the non-filling space 51 are adjacent to each other in the vertical direction.

Partition 50 extends to floor 30 . That is, the partition part 50 is supported on the floor 30 . The partition 50 has a triangular shape with two surfaces angled obliquely (60 degrees in this embodiment) with respect to the floor 30 when viewed in longitudinal section. A plurality of openings 52 are horizontally arranged in each of the two surfaces. The discharge port 31 and the opening 52 are arranged at positions overlapping each other when viewed from the opening direction of the opening 52 . The opening 52 allows the filling space 21 and the non-filling space 51 (and thus the discharge port 31) to communicate with each other. Thereby, the solid matter filled in the filling space 21 is led to the discharge port 31 through the opening 52 . According to the partition 50 having the above-described shape, solid matter does not remain on the partition 50 . However, the partition part 50 can be made into arbitrary shapes.

When the non-filled space 51 is formed as described above, it is possible to prevent the weight of all the solid objects in the filled space 21 from acting on the solid objects in the vicinity of the discharge port 31 . As a result, it is possible to suppress the formation of bridges near the outlet 31 .

The partition 50 may be supported from above by beams or the like instead of being supported on the floor 30 . In this case, the opening 52 may not be formed in the partition 50. Instead, the gap between the partition 50 and the floor 30 serves as the opening 52 (that is, the filling space 21 is filled). (the role of guiding solid matter to the discharge port 31). However, the structure of the warehouse 10 can be simplified by supporting the partition 50 on the floor 30 as in this embodiment. Moreover, supporting structures such as beams do not cause bridging.

As shown in FIG. 1, below the floor 30, an underground pit 90 is formed. An underground pit 90 is provided with a chute 91 and a conveyor 92 . Solid matter discharged from the discharge port 31 is guided to a conveyor 92 by a chute 91 and conveyed by the conveyor 92 to subsequent equipment (for example, power generation equipment). A shutter (not shown) for opening and closing the discharge port 31 may be provided on the lower surface of the discharge port 31 . This shutter may be closed when maintenance of the conveyor 92 is performed. The non-filled space 51 has the effect of reducing the load of solid objects acting on the shutter or the conveyor 92 in addition to the effect of suppressing the formation of bridges as described above.

As shown in FIG. 1, inner wall 40 extends from the inner surface of outer wall 20 at a predetermined height to floor 30 . In this embodiment, the inner wall 40 is formed over the entire outer circumference of the warehouse 10 . A filling space 21 is formed inside the inner wall 40 . On the other hand, an outer maintenance space 41 is formed outside the inner wall 40 , that is, between the inner wall 40 and the outer wall 20 . The outer maintenance space 41 is separated from the filling space 21 by the inner wall 40 . For this reason, the worker can enter and leave the outer maintenance space 41 regardless of the state of storage of solid matter in the filling space 21 . Therefore, when a bridge elimination device (for example, an air blaster, a hammering device, etc.) is installed in the outer maintenance space 41 , maintenance work or operation of the bridge elimination device can be easily performed in the outer maintenance space 41 . In addition, since the outer maintenance space 41 is formed over the entire outer periphery of the warehouse 10, the convenience of maintenance work is improved. Moreover, since the area of the floor 30 positioned within the filling space 21 is reduced, the amount of solid matter remaining (the amount remaining on the flat portion without being led to the discharge port 31) can be reduced. Therefore, the load of residue removal work is reduced. However, the outer maintenance space 41 may be formed only in part of the outer circumference of the warehouse 10 . Of course, the outer maintenance space 41 may not be formed.

The inner wall 40 has an inverted truncated cone side shape in this embodiment. Therefore, the lower end of the inner wall 40 can be brought closer to the discharge port 31 than when a part of the inner wall 40 extends in the vertical direction. As a result, the area of the floor 30 located within the filling space 21 is reduced, and the residual amount of solid matter can be further reduced. Moreover, since the solid matter is guided to the discharge port 31 along the inner wall 40, the flow of the solid matter toward the discharge port 31 is promoted, and bridging is less likely to occur.

Furthermore, as shown in FIG. 5, in this embodiment, the inclination angle θ1 of each of the two surfaces of the partition 50 with respect to the floor 30 and the inclination angle θ2 of the inner wall 40 with respect to the floor 30 are the same (this embodiment morphology, θ1 = θ2 = 60 degrees). For this reason, the direction in which the solid matter moves toward the discharge port 31 along the inner surface of the inner wall 40 coincides with the opening direction of the openings 52 formed on the two surfaces of the partition portion 50, so that the direction toward the discharge port 31 The flow of solids is promoted and bridging is less likely to occur.

As shown in FIG. 3, the partition part 50 is installed so as to cross the inside of the inner wall 40 . In consideration of the strength of the floor 30, a discharge port 31 that is as large as possible in the transverse direction is secured inside the partition 50, that is, in the floor 30 facing the non-filled space 51. As shown in FIG. With such a configuration, the area of the floor 30 located within the filling space 21 can be further reduced, and the residual amount of solid matter can be further reduced. Also, as will be described later, movement between the non-filling space 51 and the outer maintenance space 41 becomes easier.

As shown in FIGS. 1 and 2, two warehouse entrances 25 are formed in the outer wall 20 (only one is shown in FIG. 1, but two are shown as warehouse entrances 25a and 25b in FIG. 2). there). FIG. 2 shows the outer wall 20 including the underground portion, and the warehouse doorways 25a and 25b are actually formed near the ground level. Doors may be provided at the warehouse doorways 25a and 25b. As shown in FIG. 4 , the warehouse entrance/exit 25 communicates with the outer maintenance space 41 . The inner wall 40 that partitions the non-filling space 51 and the outer maintenance space 41 is formed with non-filling space entrances/exits 42 (two shown as non-filling space entrances/exits 42a and 42b in FIG. 2). Therefore, the unfilled space 51 communicates with the outer maintenance space 41 without passing through another space. Therefore, the operator can efficiently move between the non-filling space 51 and the outer maintenance space 41 . With such a configuration, a worker can enter the outer maintenance space 41 through either of the two warehouse doorways 25a and 25b, and can enter the outer maintenance space 41 through either of the unfilled space doorways 42a and 42b. to enter the unfilled space 51. However, the non-filling space 51 and the outer maintenance space 41 do not have to communicate directly. For example, if the unfilled space entrance 42 shown in FIG. 4 is not provided, the warehouse entrance 25 shown in FIG. In this case, a doorway leading to the underground pit 90 may be provided in the floor 30 within the unfilled space 51 to allow workers to enter the unfilled space 51 from the underground pit 90 . Also, if the outer maintenance space 41 is not provided, the warehouse entrance/exit 25 may directly communicate with the non-filling space 51 .

FIG. 5 is an enlarged cross-sectional view of the vicinity of the discharge port 31. As shown in FIG. FIG. 5 shows that the solid matter 15 (indicated by hatching) filled in the filling space 21 is discharged to the discharge port 31 through the opening 52 . The solid matter 15 exiting the opening 52 flows to the discharge port 31 with an inclination of repose angle θ3 determined by the physical properties of the solid matter 15 . As shown in FIG. 5, the mountain of the solid matter 15 discharged from the opening 52 on one side and the mountain of the solid matter 15 discharged from the opening 52 on the other side do not interfere with each other. With such a configuration, the flow of one mountain is not hindered by the flow of the other mountain in the opposite direction, so the formation of bridges can be suppressed.

Moreover, since there is an interval between the peaks in the non-filling space 51, the floor 30 located between the peaks is used as a maintenance passage through which people can enter and exit without interfering with solid objects. be able to. In the example shown in FIG. 5, a maintenance passage with a width D1 is secured. In this example, the floor 30 in the non-filling space 51 is provided at a position retracted inward from the lower end of the inside of the pile of solid objects 15 . In other words, the discharge port 31 extends to the inner side of the pile of solid objects 15 . Therefore, the solid objects 15 are less likely to scatter onto the floor 30 in the non-filled space 51 . As a safety measure, if the outlet 31 is provided with a mesh structure lid (for example, grating), a maintenance passage with a width D2 larger than the width D1 can be secured. However, the floor 30 in the unfilled space 51 may extend to the lower end of the inside of the pile of solids 15 to ensure a maintenance passageway of width D2.

For example, the operator may periodically look around the non-filling space 51 to check for the presence or absence of bridging. Alternatively, the operator may perform bridge elimination work in the unfilled space 51 . Specifically, the operator may attempt to clear the bridge by inserting a rod into the opening 52 from the unfilled space 51 . Alternatively, the operator may operate a bridge elimination device installed within the unfilled space 51 . Alternatively, when the warehouse 10 is emptied, the worker in the non-filling space 51 scrapes out the solid matter 15 remaining on the floor 30 facing the filling space 21 toward the discharge port 31 using a rake or the like. You may also perform the work of discharging by hand.

In order to secure such a maintenance passage in the unfilled space 51, the width D3 of the lower end of the partition 50 is set so that the repose angle θ3 of the solid object 15 is set to 60 degrees (as shown in FIG. 5), for example. ), the passage may be designed to secure a passage with a width of 1 m or more (that is, the width D1 or the width D2 is 1 m or more) that does not interfere with the solid object 15 flowing from the opening 52 toward the discharge port 31. . When the solid matter 15 is biomass fuel, the angle of repose θ3 is generally less than 60 degrees at most. It can be said that it is almost the minimum condition to ensure that A width greater than 1 m may be secured for the maintenance passage, since the greater the width that can be secured, the more convenient the maintenance passage will be. Further, the width D3 may be designed according to the repose angle .theta.3 corresponding to the characteristics of the solid matter 15 to be stored.

When a single partition 50 is installed as in the present embodiment, the space in the non-filled space 51 is reduced compared to the case where a plurality of partitions are arranged side by side (see FIGS. 7 and 8 to be described later). You can secure a lot. That is, it becomes easier to secure a large width (D1 or D2) of the maintenance passage in the non-filling space 51 . In addition, the passage width of 1 m or more is not essential, and if a sufficient passage width that does not interfere with the solid object 15 cannot be secured, the height above the level of the floor 30 and not interfering with the solid object 15 A work deck may be provided in place.

As shown in FIG. 5 , the discharge port 31 is formed without steps with respect to the floor 30 in the non-filled space 51 . With such a configuration, the worker can easily discharge the solid matter 15 scattered on the floor 30 in the non-filling space 51 to the discharge port 31 .

As shown in FIG. 2, the warehouse entrances 25a and 25b and the unfilled space entrances 42a and 42b are arranged such that the partition 50 crosses the inner wall 40 such that the unfilled space 51 (not shown in FIG. 2) and the warehouse entrance 25a , 25b and the unfilled space inlets and outlets 42a, 42b are arranged in a straight line. That is, it enters the unfilled space 51 through one of the warehouse entrances 25a and 25b and one of the unfilled space entrances 42a and 42b, moves forward through the unfilled space 51, and leaves the unfilled space 51 through the warehouse entrances 25a and 25b. and the other of the non-filling space entrances and exits 42a and 42b. When a plurality of such warehouses 10 are installed, the plurality of warehouses 10 may be arranged such that the linear maintenance work flow lines of the warehouses 10 are arranged in a straight line. In this way, workers can perform maintenance work while walking in a straight line across a plurality of warehouses 10, and maintenance work flow lines can be made more efficient.

FIG. 6 is a cross-sectional view showing a modification of the structure near the opening 52 of the partition 50. As shown in FIG. In the illustrated example, the floor 30 in the region outside the partition 50 (that is, inside the filling space 21) is raised by mortar 33. As shown in FIG. As a result, the lower end 53 of the opening 52 is positioned at the same level as the upper surface 34 of the mortar 33 . According to such a configuration, a space for retaining solid matter is not formed below the opening 52 . Therefore, the residual amount of solid matter can be further reduced. The floor 30 of the unfilled space 51 may also be raised to the same level as the floor 30 of the filled space 21 .

FIG. 7 is a cross-sectional view showing a schematic configuration of the warehouse 120 of the second embodiment, and corresponds to FIG. Only points different from the first embodiment will be described below. In the following description, the same symbols as in the first embodiment are attached to the same components as in the first embodiment. In this example, two partitions 150 a and 150 b are installed on the floor 130 . The partitions 150a and 150b have the same shape. The partition 150a includes a first portion that is obliquely angled with respect to the floor 130, and a second portion that is located below the first portion and extends in the vertical direction. An opening 152a is formed in the second portion. In this way, when the opening 152a is formed in the second portion extending in the vertical direction, when the shutter is provided in the opening 152a, the load of the solid object acting on the shutter can be reduced.

Since the partitions 150a and 150b have the same shape, description of the partition 150b is omitted. Two rows of outlets 131a are formed corresponding to the openings 152a on both sides. Warehouse doorways 125a and 125b for entering the unfilled spaces 151a and 151b are formed in the outer wall 120 corresponding to the partitions 150a and 150b, respectively. The inner wall 240 is also formed with unfilled space entrances corresponding to the warehouse entrances 125a and 125b.

FIG. 8 is a cross-sectional view showing a schematic configuration of the warehouse 220 of the third embodiment, and corresponds to FIG. Only points different from the first embodiment will be described below. In the following description, the same symbols as in the first embodiment are attached to the same components as in the first embodiment. In this example, two partitions 250 a and 250 b are installed on the floor 230 . The partitions 250a and 250b have the same shape. Since the partitions 250a and 250b have the same shape, the description of the partition 250b is omitted. Two rows of outlets 231a are formed corresponding to the openings 252a on both sides. That is, in the warehouse 220, instead of the partition 50 of the first embodiment, two partitions 250a and 250b, which are smaller sizes of the partition 50, are provided.

Non-filling space entrances and exits 242a and 242b for entering the non-filling spaces 251a and 251b from the outer maintenance space 41 are formed in the inner wall 240 corresponding to the partitions 250a and 250b, respectively. Also in these second and third embodiments, the same maintenance as in the first embodiment is possible.

Although several embodiments of the present invention have been described above, the above-described embodiments of the present invention are intended to facilitate understanding of the present invention, and do not limit the present invention. The present invention may be modified and improved without departing from its spirit, and the present invention includes equivalents thereof. In addition, within the range where at least part of the above problems can be solved or where at least part of the effect is achieved, the components described in the claims and the specification can be combined or omitted. . For example, the present invention can be implemented as a warehouse provided with the outer maintenance space 41 although people cannot enter or leave the non-filled space 51 . Moreover, it is also possible to realize a storage warehouse that includes only at least part of the above-described various structures that exhibit the bridge suppressing effect without considering maintainability.

DESCRIPTION OF SYMBOLS 10,120,220... Storage warehouse 15... Solid object 20,120... Outer wall 21... Filling space 25,25a,25b,125a,125b... Warehouse entrance/exit 30,130,230... Floor 31,131a,231a...Exhaust port 33... Mortar 34 Upper surface of mortar 40, 240 Inner wall 41 Outside maintenance space 42, 42a, 42b, 242a, 242b Non-filling space entrance 50, 150a, 150b, 250a, 250b Partition 51, 151a, 151b, 251a, 251b... Unfilled space 52, 152a, 252a... Opening 53... Lower end of opening 90... Underground pit 91... Chute 92... Conveyor

Claims (12)

A gravity storage warehouse for the temporary storage and discharge of solids, comprising:
a floor on which an outlet is formed;
A partition disposed immediately above the discharge port, wherein a non-filled space not filled with the solid material is formed directly below the partition, and a filled space filled with the solid material and the discharge port. a partition part that partially partitions the internal space of the storage warehouse so that the
The storage warehouse is configured so that a person can enter and exit the non-filling space even when the filling space is filled with the solid matter ,
The storage warehouse also
an outer wall;
an inner wall extending from the inner surface at a predetermined height of the outer wall to the floor;
with
The filling space is formed inside the inner wall,
Between the inner wall and the outer wall, an outer maintenance space is formed, which is isolated from the filling space and into which a person can enter,
The unfilled space communicates with the outer maintenance space without passing through another space.
storage warehouse. A gravity storage warehouse for the temporary storage and discharge of solids, comprising:
a floor on which an outlet is formed;
A partition disposed immediately above the discharge port, wherein a non-filled space not filled with the solid material is formed directly below the partition, and a filled space filled with the solid material and the discharge port. a partition part that partially partitions the internal space of the storage warehouse so that the
The storage warehouse is configured so that a person can enter and exit the non-filling space even when the filling space is filled with the solid matter ,
The storage warehouse comprises a first warehouse entrance and a second warehouse entrance for entering and exiting the storage warehouse,
A line of flow is set linearly to enter the unfilled space through the first warehouse entrance and exit the storage warehouse from the unfilled space through the second warehouse entrance.
storage warehouse. The storage warehouse according to claim 1 or claim 2 ,
The outer maintenance space is formed over the entire outer circumference of the storage warehouse. The storage warehouse according to claim 3 ,
The outer wall has a cylindrical shape,
The inner wall has an inverted truncated cone side shape. The storage warehouse according to claim 3 or claim 4 ,
The partition is installed so as to cross the inner wall of the storage warehouse. The storage warehouse according to any one of claims 1 to 5 ,
The storage warehouse has one partition. The storage warehouse according to any one of claims 1 to 6 ,
The partition extends to the floor,
The partition part has an opening for communicating the filling space and the discharge port. The storage warehouse according to claim 7 ,
said partition has a triangular shape, viewed in longitudinal section, having first and second faces obliquely angled with respect to said floor;
A storage warehouse in which the opening is formed on both the first surface and the second surface. The storage warehouse according to claim 7 or claim 8 ,
A lower end of the opening is positioned at least at the same level as an upper surface of the floor in a region outside the first surface and the second surface. The storage warehouse according to any one of claims 7 to 9 ,
The partition can secure a passage with a width of 1 m or more in the unfilled space that does not interfere with the solid object flowing from the opening toward the discharge port when the angle of repose of the solid object is 60 degrees. Constructed storage warehouse. The storage warehouse according to any one of claims 1 to 10 ,
The discharge port is provided with a lid having a mesh structure in the storage warehouse. The storage warehouse according to any one of claims 1 to 11 ,
The storage warehouse, wherein the discharge port is formed without a step with respect to the floor in the non-filling space.

Images