JP2021172497A - Bucket conveyor - Google Patents

Abstract

To provide a bucket conveyor allowing for efficiently and completely removing a residual object of conveyance adhered to and remained in a bucket after discharging an object of conveyance without lowering the rate of operation.SOLUTION: A bucket conveyor 100 has a cleaning-gas ejection unit 4 and an adhered-substance recovery unit 5. The cleaning-gas ejection unit 4 is set up in a position downstream of a setup position of an object of conveyance-collection unit 3 and allowed to blow a gas toward an inner surface of a bucket 12 being passing through a return path 113B of an upper-horizontal conveyance portion 113 from below or obliquely below. The adhered-substance recovery unit 5 is arranged in a position below a close range to a setup position of the cleaning-gas ejection unit 4.SELECTED DRAWING: Figure 2

Description

The present invention relates to a bucket conveyor, which is widely used as an apparatus for transporting powders and granules.

Conventionally, as a device for transporting a powdery substance or the like, a bucket conveyor for continuously transporting a transported object by a plurality of buckets attached to a circularly driven endless chain has been widely used (see Patent Document 1).

In the above bucket conveyor, as shown in FIG. 1, the conveyed material is charged into the bucket 12 which is a box-shaped container at the conveyed material charging section 2, and the opening surface 121 of the bucket 12 is directed diagonally upward. Is transported along a transport path including a lower horizontal transport section, a vertical transport section, and an upper horizontal transport section. Then, in the transported object transported in this way, the opening surface 121 of the bucket 12 is directed diagonally downward at the folded portion near the end of the upper horizontal transport portion of the transport path, so that the transported material collecting unit 3 It is discharged in a manner of falling toward.

However, in the bucket conveyor operating as described above, there is a problem that a part of the transported material remains attached to the inner surface of the bucket 12 even after the transported material is discharged to the transported material collecting unit 3. rice field. Inappropriate residue of the transported material in the bucket is caused by the accumulation of powder or granular material in the casing due to the natural peeling of the residual transported material in the return path, and the accompanying increase in cleaning work and the increase in the amount of dust scattered. Furthermore, it caused equipment failure due to sediment. In addition, it causes various problems such as a decrease in the amount of transported material due to a decrease in the bucket capacity due to deposits, or an unintended mixing of different types of transported materials into the bucket.

In order to avoid the occurrence of the above-mentioned various defects caused by the residual conveyed material in the bucket, in many bucket conveyor operating facilities, manual work by workers (for example, manual work using a hammer or the like) is performed. , The work of removing the residual conveyed matter adhering to the bucket 12 was being carried out. However, when performing such work, it is necessary to stop the operation of the bucket conveyor each time the work is performed in order to ensure the safety of the worker and sufficiently remove the residual conveyed material. The implementation of this work requires a great deal of labor, which has been one of the factors that reduce the operating rate of the bucket conveyor.

Japanese Unexamined Patent Publication No. 2013-6637

The present invention has been devised in view of the above situation, and efficiently and safely removes residual transported material adhering to and remaining in the bucket after discharging the transported material on the bucket conveyor without lowering the operating rate. The purpose is to do.

As a result of intensive research to solve the above problems, the present inventors have been able to blow gas from an appropriate direction toward the inner surface of the bucket at an appropriate position with respect to the transport path of the bucket. We have found that the above problems can be solved by installing a gas ejection part and a deposit collecting part, and have completed the present invention. Specifically, the present invention provides the following.

(1) A plurality of buckets having an opening surface and having a box shape are continuously connected to a transport path which is an endless peripheral circuit including a lower horizontal transport portion, a vertical transport portion, and an upper horizontal transport portion. In the transported object storage section installed above the lower horizontal transport section, the transported object loading section installed above the lower horizontal transport section and loading the transported object into the opening surface of the bucket, and the terminal portion of the upper horizontal transport section. The bucket includes a lower horizontal transport section and an upper horizontal transport section for collecting the transported objects discharged from the opening surface when the opening surface rotates from the upper side to the lower side. In the going path of the transport section and the ascending path of the vertical transport section, the opening surface faces upward or diagonally upward, the return path of the lower horizontal transport section and the upper horizontal transport section, and the descending path of the vertical transport section. In the bucket conveyor, which is configured so that the opening surface faces downward or diagonally downward, the cleaning gas ejection portion further includes a cleaning gas ejection portion and a deposit collecting portion, and the cleaning gas ejection portion is provided. Is a position on the downstream side of the installation position of the transported object collecting unit, and a position where gas can be blown from below or diagonally downward toward the inner surface of the bucket passing through the return path of the upper horizontal transport unit. The bucket conveyor is installed in a bucket conveyor located in a lower position in a range close to the installation position of the cleaning gas ejection unit.

The bucket conveyor (1) is configured to collect and discharge the deposits peeled off from the inner surface of the bucket by the gas blown from the cleaning gas ejection portion. As a result, the residual transported material that adheres and remains in the bucket after the transported material is discharged can be efficiently and safely removed without lowering the operating rate. In addition, the removed residual conveyed material can be quickly recovered without remaining inside the casing of the bucket conveyor.

(2) The cleaning gas ejection portion includes a retrograde gas ejection portion installed in such a manner that gas can be blown to the bottom surface of the bucket from diagonally below the front side with respect to the traveling direction of the bucket. The bucket conveyor according to (1), wherein the deposit collecting portion is arranged at a lower position in a range near the upstream side of the retrograde gas ejection portion.

According to the bucket conveyor (2), the cleaning gas is directed toward the bottom surface of the inner surface of the bucket approaching the cleaning gas ejection part with the opening surface facing downward or diagonally downward along the traveling direction. By spraying, it is possible to more efficiently remove the residual conveyed material on the bottom surface, where deposits are particularly likely to remain.

(3) The cleaning gas ejection part is installed in an order in which gas can be sprayed from diagonally below the rear side of the bucket in the traveling direction to the front surface of the bucket in the traveling direction. The bucket conveyor according to (2), further including a running gas ejection section, wherein the deposit collecting section is arranged at a lower position between the retrograde gas ejection section and the forward gas ejection section.

According to the bucket conveyor (3), cleaning gas can be blown toward the front surface of the inner surface of the bucket, so that the residual conveyor on the front surface where deposits are likely to remain next to the bottom surface can be removed. , Can be removed more efficiently.

(4) The cleaning gas ejection portion is located downstream of the installation position of the retrograde gas ejection portion in the upper horizontal transport portion, and from diagonally downward on the front side with respect to the traveling direction of the bucket to the bottom surface of the bucket. It further includes a second retrograde gas ejection part that is installed in a manner capable of blowing gas, and the second deposit collecting portion is located below the upstream side vicinity range of the second retrograde gas ejection portion. The bucket conveyor according to (2) or (3), which is arranged in.

According to the bucket conveyor of (4), the cleaning gas of (2) or (3) is sprayed again toward the bottom surface of the inner surface of the bucket approaching the cleaning gas ejection portion along the traveling direction. Residual conveyed material that could not be completely removed by the bucket conveyor can be completely removed.

(5) Any of (1) to (4), wherein the gas ejection angle is set so that any of the cleaning gas ejection portions can blow gas onto both inner surfaces of the bucket. Bucket conveyor described in.

According to the bucket conveyor (5), the residual conveyed material can be removed more reliably by blowing the gas over substantially the entire area on both side surfaces inside the bucket conveyor.

(6) The cleaning gas ejection portion has a configuration in which a plurality of gas ejection holes are arranged side by side in a hollow tubular member along the major axis direction, and the tubular member crosses a conveyor path of the bucket. The bucket conveyor according to any one of (1) to (5).

According to the bucket conveyor (6), since the cleaning gas ejection part can be formed by a simple configuration, it is easy to additionally install it in the existing equipment as a means for removing the residual transported matter, which is economical. Further significance can be enjoyed. In addition, the number, position, and angle of the ejection holes can be easily adjusted.

(7) The discharge collection unit is formed so that the transportation path of the transported material discharged from the transported material collecting unit and the transport path of the residual transported material collected by the deposit collecting unit can be merged. The bucket conveyor according to any one of (1) to (6), which is installed below the transported object collecting unit and the deposit collecting unit.

According to the bucket conveyor (7), the removed residual conveyed material can be appropriately sorted and collected, so that no extra work is required. This can also contribute to improving the productivity of the production equipment provided with the bucket conveyor.

According to the present invention, in the bucket conveyor, the residual conveyed matter adhering to and remaining in the bucket after the conveyed matter is discharged can be efficiently and safely removed without lowering the operating rate of the bucket conveyor.

It is a side sectional view which shows typically the whole structure of the bucket conveyor of this invention. It is a side sectional view of the bucket, the cleaning gas ejection part, and the deposit collecting part which shows typically the installation mode of the cleaning gas ejection part and the gas ejection mode in the bucket conveyor of this invention. It is a side sectional view of the bucket, the second retrograde gas ejection part, and the second deposit recovery part which schematically show the installation mode of the cleaning gas ejection part and the gas ejection mode in the bucket conveyor of this invention. .. It is an upper cross-sectional view of the bucket and the cleaning gas ejection part which shows typically the installation mode of the cleaning gas ejection part and the gas ejection mode in the bucket conveyor of this invention.

<Bucket conveyor>
[overall structure]
The bucket conveyor 100 shown in FIG. 1 is an example of a preferred embodiment of the present invention. Similar to the conventionally known bucket conveyor, the bucket conveyor 100 is installed above the transported object accommodating portion 1 in which the box-shaped bucket 12 is continuously installed in the transport path 11 and a predetermined position of the transport path 11. Conveyor loading section 2 for loading the transported material into the bucket 12 and the transported material collection that is installed below the predetermined position of the transport path 11 and discharges the transported material from the bucket, and further discharges the transported material. Part 3 is included.

The bucket conveyor 100 further includes a cleaning gas ejection unit 4 and a deposit collecting unit 5 in addition to the basic configuration as the above-mentioned transport device. The cleaning gas ejection unit 4 is on the downstream side of the installation position of the transported object collecting unit 3 on the transport path 11, and is downward or oblique toward the inner surface of the bucket 12 passing through the return path 113B of the transport path 11. It is installed in a position where gas can be blown from below. Further, the deposit collecting unit 5 is arranged at a position below the cleaning gas ejection unit 4.

The transported object accommodating portion 1 of the bucket conveyor 100 is normally surrounded by a casing 8, but as shown in FIG. 1, the casing 8 has a descending path 112B of the vertical transport portion 112 of the transport path 11. An inspection door 81 is installed on the side surface in the vicinity of the end portion. As a result, even if there is a transported object or the like that cannot be completely collected by the second deposit collecting unit 51 and falls in the casing 8 of the vertical transport unit 112 and is deposited on the bottom surface of the casing 8, it can be quickly removed. Can be scraped out.

[Conveyed object storage unit, transported object input unit, transported object collecting unit]
In the conveyor 100, a plurality of buckets 12 capable of accommodating powder or granular materials to be conveyed are continuously arranged without gaps in an endless chain or the like constituting a transport path 11 which is an endless peripheral circuit. Consists of.

As shown in FIG. 1, the transport path 11 of the bucket conveyor 100 includes a lower horizontal transport unit 111, a vertical transport unit 112, and an upper horizontal transport unit 113. The lower horizontal transport section 111 and the upper horizontal transport section 113 of the transport path 11 include going paths 111A and 113A which are routes along the transport direction of the transported object, and return paths 111B and 113B which are return paths after discharging the transported object. Consists of. Further, the vertical transport portion 112 of the transport path 11 includes an upward path 112A and a downward path 112B.

The shape of the bucket 12 is a box shape having a volume necessary for accommodating a predetermined amount of powder or granular material continuously charged from the conveyed material charging portion 2 from above, and the powder or granular material is charged. It suffices as long as it has an opening surface 121 for the purpose.

Further, as shown in FIG. 1, in the bucket 12, the opening surface 121 faces upward or diagonally upward in the going paths 111A, 113A, and the ascending path 112A, and in the returning paths 111B, 113B, and the descending path 112B, the bucket 12 faces upward or diagonally upward. The opening surface 121 is fixed to an endless link chain or the like constituting the transport path 11 with a structure in which the opening surface 121 faces downward or diagonally downward. The "direction of the opening surface" in the case where the opening surface 121 as used herein faces downward or diagonally downward means the direction in which the opening surface formed by the end side of the side wall of the bucket 12 is directed. It does not mean that the direction is toward the line segment connecting the center of the bottom surface of the bucket 12 and the center of the opening surface (the direction considered to be the general discharge direction).

Further, in the bucket conveyor 100, as shown in FIG. 1, a transported object charging section 2 is installed above the region near the start end portion of the going path 111A of the lower horizontal transport section 111. The conveyed material made of various powders and granules is input from above toward the opening surface 121 of the bucket 12 in a manner of falling from the conveyed material charging unit 2.

Then, in the bucket conveyor 100, as shown in FIG. 1, the transported object collecting unit is located below the end portion of the going path 113A of the upper horizontal transport portion 113 or the region near the starting end portion of the return path 113B after being folded back at the terminal portion. 3 is installed. When the opening surface 121 of the bucket 12 rotates from the upper side to the lower side, the conveyed material made of various powders and granules falls from the opening surface 121 of the bucket 12 and is collected in the conveyed material collecting unit 3 from above. Is discharged.

[Cleaning gas ejection part]
The bucket conveyor 100 is a cleaning gas capable of spraying gas on the inner surface of the bucket 12 as a means for removing the residual transported matter adhering to and remaining inside the bucket 12 after discharging the transported material to the transported material collecting unit 3. It has a ejection part 4.

As described above, the cleaning gas ejection unit 4 is on the downstream side of the installation position of the transported object collecting unit 3 on the transport path 11, and is the inner surface of the bucket 12 passing through the return path 113B of the upper horizontal transport unit 113. It is installed at a position where gas can be blown from below or diagonally below (see FIG. 1). In the bucket conveyor 100, the powder or granular material adhering to the inner surface of the bucket 12 as a residual transport substance is peeled off from the inner surface of the bucket 12 and removed by spraying the gas by the cleaning gas ejection portion 4.

The cleaning gas ejection portion 4 is not particularly limited as long as it can blow gas onto the inner surface of the bucket 12 at a desired flow rate and flow velocity. As an example, as shown in FIG. 4, a member in which a plurality of gas ejection holes 402 are arranged side by side in a hollow tubular member 401 along the major axis direction is preferably used as a member constituting the cleaning gas ejection portion 4. be able to.

Further, it is preferable that the gas ejection hole 402 is provided with a conical spray nozzle designed so that the gas ejection angle of the cleaning gas to be ejected is within a desired angle range. For example, by simply replacing the screw-in type conical spray nozzle, not only the plane perpendicular to the traveling direction of the bucket but also the angle range on the parallel plane can be adjusted to an appropriate range. By arranging the cleaning gas ejection portion 4 having the above configuration across the traveling direction d of the bucket 12, the cleaning gas ejection angle to be ejected from the cleaning gas ejection portion 4 is appropriate while having a simple configuration. By adjusting to and setting the optimum angle, the cleaning gas can be efficiently blown to a desired range on the inner surface of the bucket 12.

The type and supply method of the gas ejected from the cleaning gas ejection unit 4 are not particularly limited, but for example, a method of storing compressed air in a tank connected to the cleaning gas ejection unit 4 and instantaneously discharging the compressed air. Can be by. Further, a valve device capable of controlling the gas ejection from the cleaning gas ejection unit 4 can be installed, and the opening and closing of the valve device can be automatically controlled by manual control or a program from an external operation terminal or the like. As a result, the gas can be sprayed intermittently, and the spraying interval can be controlled to an arbitrary interval.

The cleaning gas ejection portion 4 having such a configuration is passing through the return path 113B of the upper horizontal transport portion 113 with the opening surface 121 facing downward or diagonally downward, and the gas is substantially covered over the inner surface of the bucket 12. Is preferable, and for that purpose, it is preferable that a plurality of cleaning gas ejection portions 4 are installed at a plurality of locations of the return path 113B so as to be oriented in an optimally adjusted direction. ..

As shown in FIG. 2, the cleaning gas ejection portion 4 preferably includes at least a retrograde gas ejection portion 41. Further, as shown in the figure, it is more preferable that the cleaning gas ejection unit 4 has a configuration in which the retrograde gas ejection unit 41 and the forward gas ejection unit 42 are combined. Here, the retrograde gas ejection portion 41 in the present specification refers to the cleaning gas ejection portion 4 from diagonally downward on the front side with respect to the traveling direction d of the bucket 12 toward the inner surface of the bucket 12, as shown in FIG. It refers to a cleaning gas ejection part that is installed in a manner that allows gas to be sprayed. Similarly, the forward gas ejection portion 42 is a cleaning gas ejection portion installed in such a manner that gas can be blown toward the inner surface of the bucket 12 from diagonally below the rear side with respect to the traveling direction d of the bucket 12. Say the club.

As described above, in the return path 113B, the bucket conveyor 100 is configured such that the bucket 12 faces the opening surface 121 downward or diagonally downward in the traveling direction. Therefore, as shown in FIG. 2, the retrograde gas ejection portion 41 blows gas onto the bottom surface of the bucket 12 approaching the retrograde gas ejection portion 41 from diagonally downward on the front side with respect to the traveling direction d of the bucket 12. be able to.

Further, as also shown in FIG. 2, the forward gas ejection portion 42 can blow gas onto the surface of the bucket 12 on the front side with respect to the traveling direction from diagonally below the rear side with respect to the traveling direction d of the bucket 12.

At the end of the going path 113A of the upper horizontal transport portion 113, that is, at the bent portion where the traveling direction changes by 180 degrees, the bucket can be estimated from the movement of the bucket 12 when the opening surface 121 rotates from the upper side to the lower side. Of the various parts of the inner surface, the bottom surface is particularly prone to deposits, and the surface on the front side with respect to the traveling direction is the next to which deposits are likely to remain. Therefore, by spraying gas on the bottom surface by the retrograde gas ejection section 41 and on the front surface by the forward gas ejection section 42, the deposits on these two surfaces can be intensively removed.

When the cleaning gas ejection part 4 has a configuration in which the retrograde gas ejection portion 41 and the forward gas ejection portion 42 are combined, the gas ejection angle (gas spreading angle) and the installation angle (gas spreading angle) ejected from the gas ejection hole 402 and the installation angle ( As shown in FIG. 2, the gas ejection direction) is adjusted to an appropriate angle according to the shape, size, overall inclination angle, etc. of the bucket 12, so that the front surface and the rear side with respect to the traveling direction d can be adjusted. Gas can be sprayed over substantially the entire surface and bottom surface. More specifically, regarding the gas ejection angle, depending on the distance to the spray target portion on the inner surface of the bucket and the distance between the gas ejection holes 402, the gas is ejected from any of the gas ejection holes over the entire range in which the gas is to be sprayed. The gas ejection angle may be determined so that the gas is reached. Further, the installation angle is preferably a direction orthogonal to the surface on which the gas is to be sprayed. As an example, both the retrograde gas ejection section 41 and the forward gas ejection section 42 have three gas ejection holes, are arranged at equal intervals, and have an installation angle (gas ejection direction) of 45 degrees upward. An installation mode in which the angles (spreading angles of the gas) are all 50 to 70 degrees can be mentioned as an example of a preferable mode.

Further, regarding the arrangement and gas ejection angle of each cleaning gas ejection portion 4, as shown in FIG. 4, at least one of the cleaning gas ejection portions 4, preferably, is preferable according to the shape and size of the bucket 12. , The arrangement and the gas ejection angle are set so that either the retrograde gas ejection portion 41 or the second retrograde gas ejection portion 43 can blow the gas to substantially the entire area of both side surfaces inside the bucket 12. Is preferable. As a result, the residual conveyed matter adhering to both inner surfaces of the bucket 12 can be removed in the same manner as the bottom surface and the like. The above-mentioned "both side surfaces" refer to two opposing surfaces parallel to the traveling direction of the inner surfaces of the box-shaped bucket 12.

Further, as shown in FIG. 3, the cleaning gas ejection portion 4 includes a second retrograde gas ejection portion 43 further downstream than the installation position of one retrograde gas ejection portion 41 in the return path 113B. The configuration is more preferable. When the cleaning gas ejection portion 4 is further provided with the second retrograde gas ejection portion 43, the shape of the bucket 12 shows the gas ejection angle and the installation angle ejected from the gas ejection hole 402 as shown in FIG. By setting an appropriate angle according to the size and size, it is possible to completely remove the residual conveyed material that could not be sufficiently removed by the gas blowing by the retrograde gas ejection unit 41 and the forward gas ejection unit 42. The arrangement of the second retrograde gas ejection portion 43 and the gas ejection angle are also adjusted to appropriate angles according to the shape, size, overall inclination angle, etc. of the bucket 12 in the same manner as described above, thereby achieving the above-mentioned effect of removal. It can be more preferably expressed. Regarding the second retrograde gas ejection part 43, as an example, the number of gas ejection holes is three, the arrangement positions are evenly spaced, the installation angle (gas ejection direction) is 45 degrees upward, and the ejection angle (gas spreading angle). ) Is 30 to 50 degrees as an example of a preferable mode.

[Adhesion collection unit]
On the bucket conveyor 100, the deposit collecting unit 5 is arranged at a position below the installation position of the cleaning gas ejection unit 4 (see FIG. 1). The above-mentioned residual transported matter removed from the inner surface of the bucket 12 by the cleaning gas ejection unit 4 is discharged to the deposit collecting unit 5.

The deposit collecting unit 5 may be arranged so as to be able to collect and discharge the deposits peeled from the inner surface of the bucket 12 by the blown gas. When the cleaning gas ejection unit 4 is the retrograde gas ejection portion 41, the deposit collecting portion 5 is arranged at a lower position in the vicinity of the upstream side of the retrograde gas ejection unit 41. When the cleaning gas ejection section 4 is a combination of the retrograde gas ejection section 41 and the forward gas ejection section 42, the deposit collecting section 5 includes the retrograde gas ejection section 41 and the forward gas ejection section 42. It is placed in the lower position between. Further, when the above-mentioned second retrograde gas ejection portion is arranged, the second deposit collecting portion 51 is arranged at a position below the upstream side vicinity range of the second retrograde gas ejection portion.

[Discharge transport section]
The bucket conveyor 100 further collects the transported material collected by the transported material collecting unit 3 and the residual transported material collected by the deposit collecting unit 5 (51), and further, the predetermined transported material collectors 71, 72, and 73, respectively. It has a discharge collection unit 6 for transporting to. The discharge collection unit 6 is arranged below the transport collection unit 3, and includes an discharge route 61 and a discharge route 62 that form a route for transporting the transport discharged from the transport collection unit 3. Each route can be configured by various conventionally known belt conveyors.

As shown in FIG. 1, it is preferable that the discharge paths 61 and 62 constituting the discharge collection unit 6 are arranged so that the two routes can merge with each other. For example, in the case of the arrangement shown in FIG. 1, since the respective routes are formed so as to be confluent, the transported material collected by the transported material collecting unit 3 can arbitrarily set the discharge paths 61 and 62, respectively. By passing through both routes while advancing in the direction of, it is possible to collect in the desired collector among the transported goods collectors 71, 72 and 73.

Further, since the residual transported material collected by the deposit collecting unit 5 is merged with the discharge path 62, it can be collected in the desired collector among the transported material collectors 72 and 73 in the same manner. .. By configuring the discharge collection unit 6 as shown in FIG. 1, the removed residual transported material can be appropriately sorted and collected. Therefore, no extra work is required for the residual transported matter collected by the deposit collecting units 5 and 51. That is, the conventional human work by the worker does not occur at all. This can also contribute to improving the productivity of production equipment equipped with a bucket conveyor.

The residual transported material collected by the deposit collecting unit 51 can be discharged to the transported material collector 73 via a chute. However, the discharge collection unit 6 is not limited to the one shown in FIG. 1, and the optimum method can be selected for the discharge route and the number and combination of the transported material collectors, and the deposit collection unit 6 can be selected. The optimum method can also be selected for the discharge destinations 5 and 51.

<How to operate the bucket conveyor>
If the bucket conveyor 100 is configured such that the retrograde gas ejection portion 41, the forward gas ejection portion 42, and the second retrograde gas ejection portion 43 are sequentially arranged along the traveling direction of the return path 113B. After spraying the cleaning gas from the retrograde gas ejection unit 41, the cleaning gas is sprayed from the forward gas ejection unit 42, and after the cleaning gas is sprayed from the forward gas ejection unit 42, the cleaning gas is sprayed. Cleaning gas is blown from the second retrograde gas ejection part 43, cleaning gas is blown from the second retrograde gas ejection part 43, and then cleaning gas is blown from the retrograde gas ejection part 41. It can be an operation method in which the cycle of attaching is repeated. By adopting such an operation method, for example, when blowing with compressed air, the blowing of the present invention is performed from a compressed air supply line in a factory arranged for operating instrumentation equipment or an air-driven device. Air can be taken out. Then, the present invention can be carried out at low cost without affecting other operating devices from the existing line where the supply amount of compressed air is limited, without adding special equipment such as an air compressor. Can be done.

Alternatively, the bucket conveyor 100 has a configuration in which the retrograde gas ejection portion 41, the forward gas ejection portion 42, and the second retrograde gas ejection portion 43 are sequentially arranged along the traveling direction of the transport path 11 in the same manner as described above. In this case, the cleaning gas is sequentially sprayed from the retrograde gas ejection unit 41 and the forward gas ejection unit 42 at the same time, and then the cleaning gas is sprayed from the second retrograde gas ejection unit 43. It is also possible to repeat the cycle of spraying the cleaning gas from the retrograde gas ejection unit 43 of 2 and then simultaneously spraying the cleaning gas from the retrograde gas ejection unit 41 and the forward gas ejection unit 42. can. The idea is the same as above, but if there is some margin in the amount of compressed air supplied from the compressed air supply line in the factory, such an operation method can be adopted as a compromise. Then, the residual transported matter can be reliably removed by the retrograde gas ejection unit 41 and the forward gas ejection unit 42.

1 Transport section 11 Transport path 111 Lower horizontal transport section 111A Go route 111B Return route 112 Vertical transport section 112A Ascending path 112B Down path 113 Upper horizontal transport section 113A Go route 113B Return route 12 Bucket 121 Opening surface 2 Transport loading section 3 Conveyed material collection unit 4 Cleaning gas ejection unit 41 Retrograde gas ejection unit 42 Forward gas ejection unit 43 Second retrograde gas ejection unit 401 Tubular member 402 Gas ejection hole 5 Adhesive collection unit 51 Second deposit collection unit 6 Emission collection unit 61, 62 Emission route 71, 72, 73 Transport collector 8 Casing 81 Inspection door 100 Bucket conveyor

Claims (7)

A plurality of box-shaped buckets having an opening surface are continuously installed in a transport path which is an endless peripheral circuit including a lower horizontal transport portion, a vertical transport portion, and an upper horizontal transport portion. Conveyed goods storage section and
A transported object loading section that is installed above the lower horizontal transport section and that loads the transported object into the opening surface of the bucket.
At the terminal portion of the upper horizontal transport portion, a transport material collecting unit for collecting the transported material discharged from the opening surface when the opening surface rotates from the upper side to the lower side is provided.
In the bucket, the opening surface faces upward or diagonally upward in the going path of the lower horizontal conveyor and the upper horizontal conveyor and the ascending path of the vertical conveyor, and the lower horizontal conveyor and the upper horizontal conveyor face the bucket. A bucket conveyor that is configured such that the opening surface faces downward or diagonally downward in the return path of the portion and the descending path of the vertical transport portion.
It further has a cleaning gas ejection part and a deposit collecting part.
The cleaning gas ejection portion is on the downstream side of the installation position of the transported object collecting portion, and the gas is gas from below or diagonally downward toward the inner surface of the bucket passing through the return path of the upper horizontal transport portion. It is installed in a position where it can be sprayed
The deposit collecting unit is a bucket conveyor arranged at a position below a range close to the installation position of the cleaning gas ejection unit. The cleaning gas ejection part is
It includes a retrograde gas ejection part installed in such a manner that gas can be blown to the bottom surface of the bucket from diagonally below the front side with respect to the traveling direction of the bucket.
The deposit collecting portion is arranged at a lower position in the vicinity of the upstream side of the retrograde gas ejection portion.
The bucket conveyor according to claim 1. The cleaning gas ejection part is
It further includes an antegrade gas ejection part that is installed in such a manner that gas can be blown from diagonally below the rear side with respect to the traveling direction of the bucket to the front surface of the bucket with respect to the traveling direction.
The deposit collecting portion is arranged at a lower position between the retrograde gas ejection portion and the forward gas ejection portion.
The bucket conveyor according to claim 2. The cleaning gas ejection part is
It is installed on the downstream side of the installation position of the retrograde gas ejection portion in the upper horizontal transport portion in such a manner that gas can be blown to the bottom surface of the bucket from diagonally below the front side with respect to the traveling direction of the bucket. It further contains a second retrograde gas ejection part, which is
The second deposit collecting portion is arranged at a lower position in the vicinity of the upstream side of the second retrograde gas ejection portion.
The bucket conveyor according to claim 2 or 3. The gas ejection angle is set so that any of the cleaning gas ejection portions can blow gas onto both inner surfaces of the bucket.
The bucket conveyor according to any one of claims 1 to 4. The cleaning gas ejection portion has a configuration in which a plurality of gas ejection holes are arranged side by side in a hollow tubular member along a major axis direction, and the tubular member is arranged across a conveyor path of the bucket. The bucket conveyor according to any one of claims 1 to 5. The discharged material collection unit is formed so that the transport path of the transported material discharged from the transported material collecting unit and the transport path of the residual transported material collected by the deposit collecting unit can be merged with each other. It is installed below the part and the deposit collection part.
The bucket conveyor according to any one of claims 1 to 6.

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