Rotary recovery device

Abstract

To provide a rotary recovery device capable of easily recovering powder, a lump or the like left in the bottom of a casing.SOLUTION: This rotary recovery device comprises: a casing 1 having a bottom plate; an upper drive shaft 2 provided at one end of an upper part in the casing; an upper drive sprocket 3; an upper follower shaft 4 provided at the other end of the upper part in the casing; an upper follower sprocket 5; two lower follower shafts 6 and 7 space apart from each other in a lower part in the casing; two lower sprockets 8 and 9; left and right chains 10 and 11 for connecting the upper drive sprocket 3, the upper follower sprocket 5, and the two lower sprockets 8 and 9 and transmitting rotation; and a plurality of bucket-like scrapers 12 fitted to the left and right chains 10 and 11. The bucket-like scrapers 12 scrape off and hold powder or a lump 13 left in the bottom plate of the casing 1, and drop it into a chute 14.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a rotary recovery device. In the conveyance by an apron conveyor or other conveyors, in many cases, a part of the conveyed material does not fall at the original falling position in the forward and return paths, but falls as powder or lumps to the bottom of the casing of the conveyor and accumulates. In the case of an apron conveyor, powder or lumps adhere to the surface of the apron and are not discharged at the head, and in many cases, the powder or lumps fall due to slight vibration or the like on the return side.

[0002] Conventionally, in order to remove the powder, lumps, etc. accumulated at the bottom of the casing of the conveyor, it was necessary to temporarily stop the operation of the operating conveyor and clean the bottom of the casing from the side of the conveyor, which was inefficient. Also, in the case of a conveyor surrounded by a casing, it was necessary to scrape and clean the powder and lumps from a cleaning window or the like attached to the conveyor.

[0003] Furthermore, the conveyor had to be stopped during cleaning, resulting in a decrease in the conveyance efficiency of the conveyed material and sometimes causing problems in the treatment of incinerated waste. In particular, when the conveyor could not be stopped, it became a dangerous operation, which was a problem.

[0004] Therefore, the present invention provides a rotary recovery device that can easily recover the powder, lumps, etc. accumulated at the bottom of the casing of the conveyor and return them to the original conveyor.

Background Art

[0005] Conventionally, in conveyors, when a part of the incinerated waste, powder, or lumps accumulated to a certain extent at the bottom of the casing, the movement of the conveyor was often stopped periodically for cleaning.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0007] To provide a device for collecting a part of the conveyed material that has fallen to the bottom of the casing, powder, lumps, etc.

Means for Solving the Problems

[0008] In the first invention of the present invention, a casing having a bottom plate, an upper drive shaft provided at one end of the upper part in the casing, an upper drive sprocket that rotates in accordance with the rotation of the upper drive shaft, an upper driven shaft provided at the other end of the upper part in the casing, an upper driven sprocket that rotates in accordance with the rotation of the upper driven shaft, two lower driven shafts provided at intervals in the lower part of the casing, two lower sprockets that rotate in accordance with the rotation of the lower driven shafts, and left and right chains that connect the upper drive sprocket, the upper driven sprocket, and the two lower sprockets to transmit rotation, and a rotary recovery device having a plurality of bucket-type scrapers attached to the left and right chains, The diameter of the upper driven sprocket and the diameters of the two lower sprockets are the same, and the diameter of the upper drive sprocket is set to be 2 to 3 times the diameter of the upper driven sprocket. The bucket-type scraper scrapes and holds the powder or lumps accumulated on the bottom plate of the casing along the bottom plate of the casing between the two lower driven shafts, and the bucket-type scraper drops the powder or lumps into the chute when it is located above the upper drive sprocket.

[0009] Also, The diameter of the upper driven sprocket and the diameters of the two lower sprockets are the same, and the diameter of the upper drive sprocket is set to be 2 to 3 times the diameter of the upper driven sprocket.

[0010] In the present invention Second Invention Instead, a rotary recovery device is provided without a bottom plate that prevents the fall of powder or lumps between an upper drive shaft provided at one end of the upper part in the casing and an upper driven shaft provided at the other end of the upper part in the casing.

[0011] In the present invention Third Invention a rotary recovery device having a casing with a bottom plate, an upper drive shaft provided at the upper center in the casing, an upper drive sprocket that rotates in accordance with the rotation of the upper drive shaft, two lower driven shafts provided at intervals in the lower part in the casing, two lower sprockets that rotate in accordance with the rotation of the lower driven shafts, left and right chains that connect the upper drive sprocket and the two lower sprockets to transmit rotation, and a plurality of bucket-type scrapers attached to the left and right chains, wherein the bucket-type scrapers scrape and hold powder or lumps accumulated on the bottom plate of the casing along the bottom plate of the casing between the two lower driven shafts, and the bucket-type scrapers drop the powder or lumps into a chute when located above the upper drive sprocket.

[0012] In the present invention Fourth Invention a rotary recovery device is provided in which the diameter of the drive sprocket is 3 to 6 times the diameter of the two lower sprockets.

[0013] In the present invention Fifth Invention a rotary recovery device is provided in which when the left and right chains are in contact with and rotating against a lower sprocket provided in the lower part of the casing, the bucket-type scrapers attached to the left and right chains scrape and hold powder or lumps without gaps along the lower side edge of the casing.

[0014] In the present invention Sixth Invention a rotary recovery device is provided in which the rotation of the upper drive shaft is set to an optimal rotation speed, stopped and restarted, and intermittent.

Advantages of the Invention

[0015] According to the present invention, it becomes possible to scrape, collect, and return to the original conveyor a part of the conveyed material, powder, or lump accumulated at the bottom of the conveyor using a bucket-type scraper. It is possible to save the labor of stopping the operation of the conveyor or disassembling and cleaning the conveyor, and it becomes possible to efficiently clean the conveyor without stopping its operation.

Brief Explanation of Drawings

[0016]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Best Mode for Carrying Out the Invention

[0017] Examples are shown below.

Example 1

[0018] Figures 1, 2, and 3 are explanatory diagrams of the rotary recovery device of the present invention. The rotary recovery device of the present invention can be attached and applied to a conveyor driven by two left and right conveyor chains such as a scraper conveyor, a flight conveyor, an apron conveyor, a bucket elevator, and a slat conveyor.

[0019] In Figure 1, 1 is a casing, which constitutes the whole of this device. 2 is an upper drive shaft, which is provided at one end in the upper part inside the casing 1. 3 is an upper drive sprocket, which is adapted to rotate in accordance with the rotation of the upper drive shaft 2. The rotation of the upper drive shaft 2 is controlled by a servo motor or the like.

[0020] Alternatively, the central axis of the upper drive shaft 2 can be eliminated, and drive motors can be attached from both sides. In this case, even when large chunks are conveyed by the bucket-type scraper, they can be discharged without any problems.

[0021] 4 is the upper driven shaft, which is provided at the upper other end inside the casing 1. This upper driven shaft 4 can be installed by being lowered from the upper other end by take-up. By taking up, the length of the chain can be adjusted, and the tension applied to the chain can also be adjusted.

[0022] 5 is the upper driven sprocket, which is adapted to rotate in accordance with the rotation of the upper driven shaft 4. In this way, by providing the upper drive shaft 2 and the upper driven shaft 4 at one end and the other end of the upper part with a space therebetween, it is possible to cope with conveyors having a particularly large width.

[0023] Also, by setting the diameter of the drive sprocket 3 to be 2 to 3 times the diameter of the upper driven sprocket 5, the torque of the drive sprocket 3 can be increased. Further, by increasing the diameter of the drive sprocket 3, the chain along the sprocket draws a gentle curve, so that large conveyed objects can also be smoothly discharged without any problems.

[0024] Also, by not providing a bottom plate for preventing the fall of powder or chunks between the upper drive shaft provided at one end of the upper part inside the casing and the upper driven shaft provided at the other end of the upper part inside the casing, the entire device can be simplified. Further, since the bottom plate is not provided, the scraper does not rub against the bottom plate and wear, and inspection and replacement are unnecessary. Also, since there is no resistance caused by rubbing, it leads to energy saving.

[0025] 6 and 7 are lower driven shafts, which are provided at the lower part inside the casing 1 with a gap therebetween. The gap can be arbitrarily changed according to the size of the conveyor or the like. 8 and 9 are lower sprockets, which are adapted to rotate in accordance with the rotation of the lower driven shafts 6 and 7.

[0026] Moreover, by making the diameter of the upper driven sprocket 5 the same as the diameters of the two lower sprockets 8 and 9, the movement of the chain can be improved.

[0027] 10 and 11 are chains, which are adapted to connect the upper drive sprocket 3, the upper driven sprocket 5 and the two lower sprockets 8 and 9 to transmit rotation.

[0028] 12 is a bucket-type scraper, which is provided at equal intervals on the chains 10 and 11. In FIG. 1, only a part of the bucket-type scraper 12 provided at equal intervals is shown. This bucket-type scraper 12 can scrape and hold the powder or lump 13 accumulated on the bottom plate of the casing 1 along the bottom plate of the casing 1 between the two lower driven shafts 6 and 7.

[0029] FIG. 3 is an enlarged view showing a part of the lower part of the casing 1 and the periphery of the lower sprocket 9. Specifically, it shows the locus of movement of the bucket-type scraper 12 along the lower side edge of the casing 1. When the bucket-type scraper 12 moves along the lower sprocket 9, the casing 1 is molded so as to move without a gap along the lower side edge of the casing 1.

[0030] By molding in this way, when the left and right chains 10 and 11 are in contact with the lower sprocket 9 provided at the lower part inside the casing 1 and rotate, the bucket-type scraper 12 attached to the left and right chains 10 and 11 can scrape and hold the powder or lump 13 without a gap along the lower side edge of the casing.

[0031] On the other hand, when the bucket type scraper 12 is designed with a gap between it and the lower side edge of the casing 1, powder will accumulate at the lower side edge. In some cases, this accumulated powder may serve as a guide for the powder or lumps scraped later. Also, when a large lump comes, it may act as a buffer between the casing 1 and the bucket type scraper 12 and enable smooth scraping. The scraping of powder or lumps by the bucket type scraper 12 is performed by the tip of the bucket type scraper 12 scooping up what has accumulated at the bottom of the casing 12.

[0032] The powder or lumps 13 scraped and held by the bucket type scraper 12 can be dropped into the chute 14 when it is located above the upper drive sprocket. The powder or lumps 13 may include things that cannot be incinerated, such as wire, empty cans, aluminum cans, iron scraps, large lumps formed by melting and growing of aluminum, 18 - liter cans, and small stones.

[0033] Also, as the powder 13, there may be cases where it includes dry ash without moisture and wet ash with moisture. The bucket type scrapers 12 are attached to the chains 10, 11 at equal intervals. Also, when the chains 10, 11 rotate along the lower driven shafts 6, 7, the bucket type scrapers 12 can move along the lower side edge of the casing 1 and scrape and hold powders and the like.

[0034] 15 is an apron conveyor. It can be used for conveyors driven by two left - and - right conveyor chains such as other scraper conveyors, flight conveyors, bucket elevators, and slat conveyors.

Example 2

[0035] In FIGS. 4 and 5, other embodiments of the present invention are shown. In this embodiment, it is characterized in that the upper drive shaft is provided at the central upper part of the casing, and it is composed of three sprockets as a whole.

[0036] 16 is the casing, which constitutes the whole rotary recovery device. 17 is the upper drive shaft, which is provided at the upper center inside the casing 16. By providing the upper drive shaft 17 at the upper center inside the casing 16, the balance with the lower driven shaft is improved, and the rotation of the chain also becomes smooth. Thus, when the upper drive shaft 17 is provided at the upper center, it can correspond to a conveyor having a relatively small width. 18 is the upper drive sprocket, which is adapted to rotate in accordance with the rotation of the upper drive shaft 17.

[0037] 19 and 20 are the lower driven shafts, which are provided at intervals at the lower part inside the casing 16. 21 and 22 are the lower sprockets, which are adapted to rotate in accordance with the rotation of the lower driven shafts 19 and 20. 23 and 24 are the chains, which are adapted to connect the upper drive sprocket 18 and the two lower sprockets 21 and 22 to transmit rotation.

[0038] 25 is a bucket type scraper, which can scrape and hold the powder or lump 26 accumulated on the bottom plate of the casing 16 along the bottom plate of the casing 16 between the two lower driven shafts 19 and 20.

[0039] The powder or lump held by the bucket type scraper 25 can be dropped into the chute 27 when the upper drive sprocket is located at the upper part.

[0040] 28 is an apron conveyor. It can be used for conveyors driven by two left and right conveyor chains such as other scraper conveyors, flight conveyors, bucket elevators, and slat conveyors.

Industrial Applicability

[0041] The present invention is a rotary recovery device that can recover accumulated materials without stopping the operation of the conveyor when a part of the conveyed object, powder, or lump accumulates at the bottom of the device.

Explanation of Signs

[0042] 1 Casing 2 Upper drive shaft 3 Upper drive sprocket 4 Upper driven shaft 5 Upper driven sprocket 6 Lower driven shaft 7 Lower driven shaft 8 Lower sprocket 9 Lower sprocket 10 Chain 11 Chain 12 Bucket-type scraper 13 Powder or lump 14 Shoot 15 Apron conveyor 16 Casing 17 Upper drive shaft 18 Upper drive sprocket 19 Lower driven shaft 20 Lower driven shaft 21 Lower sprocket 22 Lower sprocket 23 Chain 24 Chain 25 Bucket-type scraper 26 Powder or lump 27 Shoot 28 Apron conveyor

Claims

1. A casing having a bottom plate, an upper drive shaft provided at one end of the upper part within the casing, an upper drive sprocket that rotates in accordance with the rotation of the upper drive shaft, an upper driven shaft provided at the other end of the upper part within the casing, an upper driven sprocket that rotates in accordance with the rotation of the upper driven shaft, two lower driven shafts provided at intervals in the lower part within the casing, two lower sprockets that rotate in accordance with the rotation of the lower driven shafts, left and right chains that connect the upper drive sprocket, the upper driven sprocket, and the two lower sprockets to transmit rotation, a rotary recovery device having a plurality of bucket-type scrapers attached to the left and right chains, wherein the diameter of the upper driven sprocket and the diameters of the two lower sprockets are the same, and the diameter of the upper drive sprocket is 2 to 3 times the diameter of the upper driven sprocket, the bucket-type scraper scrapes and holds powder or lumps accumulated on the bottom plate of the casing between the two lower driven shafts along the bottom plate of the casing, and drops the powder or lumps into a chute when the bucket-type scraper is positioned above the upper drive sprocket. A rotary recovery device characterized by this.

2. The rotary recovery device according to claim 1, characterized in that no bottom plate for preventing the fall of powder or lumps is provided between the upper drive shaft provided at one end of the upper part within the casing and the upper driven shaft provided at the other end of the upper part within the casing.

3. A casing having a bottom plate, an upper drive shaft provided at the upper center within the casing, an upper drive sprocket that rotates in accordance with the rotation of the upper drive shaft, two lower driven shafts provided at intervals in the lower part within the casing, two lower sprockets that rotate in accordance with the rotation of the lower driven shafts, left and right chains that connect the upper drive sprocket and the two lower sprockets to transmit rotation, a rotary recovery device having a plurality of bucket-type scrapers attached to the left and right chains, The rotary recovery device is characterized in that the bucket-type scraper scrapes and holds the powder or lumps accumulated on the bottom plate of the casing between the two lower driven shafts along the bottom plate of the casing, and drops the powder or lumps into the chute when the bucket-type scraper is located above the upper drive sprocket.

4. The rotary recovery device according to claim 3, characterized in that the diameter of the drive sprocket is 3 to 6 times the diameter of the two lower sprockets.

5. The rotary recovery device according to any one of claims 1 to 4, characterized in that when the left and right chains are in contact with and rotating on the lower sprockets provided in the lower part of the casing, the bucket-type scraper attached to the left and right chains scrapes and holds the powder or lumps without gaps along the lower side edge of the casing.

6. The rotary recovery device according to any one of claims 1 to 4, characterized in that the rotation of the upper drive shaft is optimized in terms of rotational speed, stopped and restarted, and intermittent.

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