JPH0740628U - belt conveyor - Google Patents

Abstract

(57) [Summary] [Purpose] Even with a belt conveyor in which the head pulley is arranged overhanging on the loading port of the conveyed object, it is possible to satisfactorily scrape off the granular powder adhering to the dirty surface of the belt return path, (EN) Provided is a belt conveyor capable of reducing the amount of fallen powder particles from a belt return path to the floor surface. In a belt conveyer 10 in which a head pulley 11 is arranged overhanging on an inlet 15 of an object to be conveyed, a belt return path 12b on the side of the head pulley 11 which does not overhang on the inlet 15 is directed downward. The belt cleaner 28 pressed against the dirty surface, the pressing roller 23 that presses the belt return path 12b on the head pulley 11 side from above, and the fallen powder scraped off by the belt cleaner 28 are collected and The collection / dropping means 18, 18a, 21, 25-28 for dropping to the input port 15 are provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a belt conveyor, and more specifically, even in a belt conveyor in which a head pulley is arranged in an overhanging manner on a loading port of an object to be conveyed, it is possible to satisfactorily adhere the granular powder adhered to the dirty surface of the belt return path. The present invention relates to a belt conveyer that can scrape off and reduce the amount of fallen particle powder from the belt return path to the floor surface.

[0002]

[Prior art]

 For example, as a belt conveyor for supplying a raw material to a mixer for sintering iron-making raw material, a belt conveyor in which a head pulley is arranged in an overhang state on a raw material input port is known. By the way, in such a belt conveyor that conveys raw materials containing granular powder, the surface of the forward path of the belt that became dirty due to the placement of the raw material becomes the lower surface of the backward path of the belt, but it could not fall to this dirty surface. A large amount of granular powder is attached. The adhered particles fell to the floor surface in the area until the soiled surface was turned upward again by the tail pulley, which soiled the area around the conveyor installation part.

As a conventional means for solving this, for example, as disclosed in Japanese Patent Laid-Open No. 5-162842, water is jetted onto the dirty surface of the belt return path on the head pulley side to attach the granular powder. It is known that the dust is washed off, the scraper (Japanese Patent Laid-Open No. 4-292320, etc.) or a belt cleaner such as a rotating brush is pressed against the dirty surface of the belt return path on the head pulley side to scrape off the adhered particulates. There is.

[0004]

[Problems to be solved by the device]

 However, in the former case where the granular powder adhering to the dirty surface is washed with water, the nozzle unit for spraying water, the draining roller, and the installation space for the belt cleaner must be secured on the head pulley side of the belt conveyor. Since the belt conveyor to be applied is a conveyor in which the head pulley side is overhanged on the loading port of the transported object, it is difficult to secure this, and moreover there is a pump unit for washing water, precipitation of a large amount of slurry and a recovery pit. There was a problem in terms of equipment cost and running cost such as necessity.

Therefore, it is considered promising that the latter, which does not have these problems, scrapes off the granular powder adhering to the dirty surface by a belt cleaner such as a scraper or a rotating brush. However, if this scraping method is adopted, the scraped powder must be dropped into the throwing port, so it is necessary to press the belt cleaner against the part where the belt is wound around the head pulley. . However, since this part overhangs on the charging port as described above, it is extremely difficult to adjust the pressing force that presses the belt cleaner against the dirty surface, which prevents the sufficient removal of the granular powder. There was another issue that would have to happen.

The present invention has been made in view of the above circumstances, and even a belt conveyor in which a head pulley is disposed overhanging on a loading port of an object to be conveyed is satisfactorily attached to a dirty surface of a belt return path. An object of the present invention is to provide a belt conveyor that can scrape off the granular powder and reduce the amount of the falling granular powder that falls from the belt return path to the floor surface.

[0007]

[Means for Solving the Problems]

 The belt conveyor according to claim 1, which is in accordance with the above object, is a belt conveyor in which a head pulley is arranged so as to hang over an inlet of an object to be conveyed, and the belt on the head pulley side that does not overhang on the inlet. A belt cleaner that is pressed against the dirt surface that faces downward on the return path, a pressing roller that presses the belt return path on the head pulley side from above, and the fallen particles scraped off by the belt cleaner are collected and It is configured so as to include a collecting and dropping means for dropping to an input port.

According to a second aspect of the present invention, in the belt conveyor according to the first aspect, the conveyor frame at the end portion on the head pulley side including the head pulley is separated and independent to convey the conveyed object. The belt cleaner, the pressing roller, and the collecting and dropping means are attached to the carriage that is movable.

Further, the belt conveyor according to a third aspect is the belt conveyor according to the first or second aspect, wherein the collecting and dropping means has a closed structure except a portion overhanging on the input port. It is configured.

Further, a belt conveyor according to a fourth aspect is configured such that, in the belt conveyor according to the first to third aspects, a seal plate is provided at a portion overhanging on the charging port.

According to a fifth aspect of the present invention, in the belt conveyor according to the first to fourth aspects, the power of the recovery and dropping means is transferred from the guide roller pressed against the belt return path to the power transmission means. Is configured to get through.

[0012]

[Action]

 In the belt conveyor according to the first to fourth aspects, the conveyed object on the outward path of the belt is dropped from the overhanging end of the conveyor on the head pulley side into the insertion port. After that, in the part that does not overhang on the insertion path on the head pulley side of the belt return path, the dirty surface on which the transported object is placed is pressed from above by the pressing roller adjusted to an appropriate pressing force. When the belt cleaner is pressed against the roller, the adhered particles are scraped off.Therefore, even if the belt conveyor has a head pulley overhanging on the loading port of the transported object, the belt return path It is possible to scrape off the granular powder adhering to the dirty surface of the and reduce the amount of the granular powder that falls from the belt return path to the floor surface.

Moreover, since the scraped-off granular powder is collected by the collecting / discharging means and dropped into the charging port, the scraped-off falling granular powder can be automatically collected and dropped into the charging port.

Particularly, in the belt conveyor according to the second aspect of the present invention, when the carriage is moved in the carrying-in direction of the transported object, for example, at the time of maintenance of the head pulley, the head pulley that has been overhung on the loading port is pulled. Since it can be returned, maintenance of the head pulley etc. becomes easier.

Further, in the belt conveyor according to the third aspect, since the granular powder scraped off from the dirty surface of the belt return path by the belt cleaner is collected by the collecting and dropping means having the closed structure, the granular powder is not conveyed outside the conveying system. Can be prevented from scattering.

Further, in the belt conveyor according to the present invention, dust, fog, mist, etc. blown up from the input port are blocked by the seal plate provided in the portion overhanging the input port of the belt conveyor. , The working environment around the belt conveyor is improved.

Further, in the belt conveyor according to the fifth aspect of the invention, as the belt rotates, the guide roller pressed against the belt return path rotates, and this rotational force is collected and dropped through the power transmission means. Since it is transmitted to the vehicle as a power source, a separate driving means such as a reduction motor is not required.

[0018]

【Example】

 Next, an embodiment of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention. 1 is a side view of a belt conveyor according to an embodiment of the present invention, and FIG. 2 is a front view of the same.

As shown in FIG. 1, a belt conveyor 10 according to an embodiment of the present invention is a conveyor in which an endless belt 12 is stretched between a head pulley 11 and a tail pulley to which a drive motor is connected. A plurality of carrier rollers 13 are attached to the conveyor frame 14 to support the belt outward path 12a of the endless belt 12 as a set of three and the belt return path 12b as a unit. The belt outward path 12a is covered with a hood 14a attached to the conveyor frame 14 and having a substantially semicircular shape in a sectional view.

An end of the belt conveyor 10 on the side of the head pulley 11 is arranged in an overhang state on an input port 15 of a mixer for kneading an iron-making raw material, which is an example of an object to be conveyed.

The head pulley 11 and an end of the conveyor frame 14 on the side of the head pulley 11 are attached with the head pulley 11 and a dropping chute 16a of iron-making raw material to form a partial frame 16 which is separated and independent from other portions. The partial frame 16 is attached to a carriage 19 that is movable in the iron raw material transport direction along a pair of rails 18 provided on a frame 17 to which the conveyor frame 14 is attached.

Four wheels 20 are attached to a lower portion of the carriage 19, and the carriage 19 moves within a range between stoppers 18 a fixed to both ends of the rail 18. The normal position of the carriage 19 on the rail 18 is the position where the wheel 20 contacts the stopper 18a on the head pulley 11 side. In this state, that is, the end of the belt conveyor 10 on the head pulley 11 side is The partial frame 16 is detachably bolted to the main body of the conveyor frame 14 in a state of overhanging on the charging port 15.

Further, on the upper part of the carriage 19, a saucer-shaped collection case 21 for receiving the granular powder dropped from the downwardly contaminated surface of the belt return path 12b is attached. The partial frame 16 is provided at the upper end of the recovery case 21. Therefore, the inside of the recovery case 21 has a closed structure by the hood 14 a attached to the upper portion of the partial frame 16.

A pair of pressing rollers 23 for pressing the belt return path 12b on the head pulley 11 side from above are provided at the upper ends of both side plates 22 of the recovery case 21 in a mutually separated state. Between the pressing rollers 23, a pair of scrapers 24, which is an example of a belt cleaner that is pressed against the downwardly contaminated surface of the belt return path 12b on the head pulley 11 side that does not overhang on the insertion port 15, is fixed. Has been.

Sprockets 25 and 26 are arranged in pairs at both ends of the recovery case 21, and a pair of chains 27 are hung in parallel between the sprockets 25 and 26. Between these chains 27, a large number of scrapers 28 are fixed which scrape out the granular powder that has fallen into the collection case 21 at a constant pitch and drop it into the charging port 15. These constituent parts 18, 18a, 21, 25 to 28 constitute a collecting and dropping means for collecting the dropped granular powder scraped off by the scraper 24 and dropping it to the charging port 15.

The power system of the scraper 28 includes a sprocket 30 fixed to the rotating shaft of a guide roller 29 pressed against the belt return path 12b, and a sprocket 31 provided at the end of the carriage 19 on the carrying-in side of the conveyed object. A chain 32 is hung between the sprocket 31 and the small sprocket 33 fixed to the rotating shaft of the sprocket 31 and a large sprocket 34 fixed to the rotating shaft of the sprocket 25. The chain 35 is bridged, and the endless belt 12 rotates to rotate the pressed guide roller 29, which in turn rotates the chains 32 and 35, which in turn rotates the sprocket 25 and scraper 28. The scraping is performed by.

The tension of the chain 27 is adjusted by the tension adjusting means 36 provided on the sprocket 25 side. These components 30 to 35 constitute power transmission means for extracting power from the guide roller 29 pressed against the belt return path 12b. A seal plate 38 is attached to the end of the carriage 19 on the side of the head pulley 11 to block dust, fog, mist, etc. blown up from the charging port 15 via a mounting bracket 37.

Next, the operation of the belt conveyor 10 according to the embodiment of the present invention will be described. The iron-making raw material dropped on the belt outward path 12a on the tail side is conveyed to the head side while being placed on the endless belt 12, and then, from the chute 16a overhanging on the input port 15 to the input port 15 of the mixer. Be dropped on.

After that, the endless belt 12 enters the area of the belt return path 12b, the dirty surface on which the ironmaking raw material is placed faces downward, and the belt is pressed from above by the pair of pressing rollers 23 adjusted to an appropriate pressing force. The scraper 24 is pressed against the dirty surface while pressing the front and rear sides of the particulate dust scraping portion of the return path 12b, and the particulate dust is scraped off. Thus, even with the belt conveyor 10 overhanging on the iron-making raw material input port 15, the part of the conveyor 10 which is not overhung can scrape off the particulate powder adhering to the dirty surface of the belt return path 12b. It is possible to reduce the amount of the fallen particle powder that falls from the belt return path 12b to the floor surface.

The scraped off powder falls on the bottom surface of the recovery case 21, and the sprocket 25 is rotated by the force pulled out from the guide roller 29 pressed against the belt return path 12b, and the chain 27 is rotated. The scrapers 28 arranged at a constant pitch are scraped to the head pulley 11 side and dropped into the charging port 15. As a result, the fallen particle powder scraped off by the scraper 24 can be automatically collected and dropped into the charging port 15.

Further, for maintenance such as replacement of the head pulley 11, for example, the bolt fastening between the partial frame 16 and the main body of the conveyor frame 14 is released, and the end portion of the hood 14 a on the head pulley 11 side is melted and cut. At the same time, the seal plate 38 is removed from the fitting 37. Next, by moving the carriage 19 along the rail 18 toward the tail pulley, the head pulley 11 can be pulled back from the top of the loading slot 15, so that the head pulley 11 can be replaced on the dangerous loading slot 15 as in the past. The maintenance of the head pulley 11 and the like can be performed safely and easily.

After the maintenance is completed, the carriage 19 is returned to its original position, the partial frame 16 and the main body of the conveyor frame 14 are bolted, the hood 14a is welded, and the seal plate 38 is attached. Attach it to 37 and restart operation.

As described above, the recovery case 21 has a structure in which the hood 14a disposed above is closed except for the lower side of the iron-making raw material, so that the scraper 24 removes the dirt from the belt return path 12b. It is possible to prevent the scraped iron-making raw material from scattering outside the transportation system. Further, since the belt conveyor 10 is provided with the seal plate 38 in the portion overhanging on the input port 15, dust blown up from the input port 15 is blocked, and the work around the installation part of the belt conveyor 10 is performed. The environment can be improved.

Further, since the power of the collecting and dropping means for scraping the granular powder in the collecting case 21 by the scraper 28 is drawn out from the guide roller 29 pressed against the belt return path 12b, for example, a separate drive such as a deceleration motor is used. Means can be eliminated.

The present invention has been described above with reference to the drawings. However, the present invention is not limited to this embodiment, and even if there are design changes and the like without departing from the scope of the invention, the present invention is included. For example, although the scraper is shown as the belt cleaner in the embodiments, the belt cleaner is not limited to this and may be another belt cleaner such as a rotary brush.

Further, in the embodiment, two pressing rollers and two belt cleaners are used, but the present invention is not limited to this, and any number may be used. Further, the collecting and dropping means is not limited to that of the embodiment, but may have any structure as long as it can collect the granular powder dropped in the collecting case and then drop it into the input port. May be.

Further, in the embodiment, the head pulley side end of the conveyor frame which is separated and independent is attached to the carriage to facilitate the maintenance of the head pulley and the like. However, the present invention is not limited to this. It is not always necessary to move the head pulley side of the conveyor frame by a dolly. Further, in the embodiment, the collecting and dropping means has a closed structure except the portion overhanging on the charging port, but it is not always necessary to have such a structure.

Then, in the embodiment, the seal plate is provided in the overhanging portion on the charging port, but the seal plate may not be provided. Next, in the embodiment, the power of the collecting and dropping means is obtained from the guide roller pressed against the belt return path via the power transmitting means, but not limited to this, for example, a separate power source may be provided. It may be provided so that the collecting and dropping means is activated.

[0039]

[Effect of device]

 In the belt conveyor according to the first aspect of the present invention, in the portion of the conveyor that does not overhang, while pressing the belt return path from above with the pressing roller, the belt cleaner is pressed against the dirty surface to scrape off the granular powder. Even if the belt conveyor has the head pulley overhanging at the input port, the dirt surface can be cleaned well, and this reduces the amount of fallen powder that falls from the belt return path to the floor surface. Moreover, since the scraped grain powder is collected by the collection and dropping means and dropped into the input port, the scraped grain powder is automatically collected and dropped into the input port together with the transported object conveyed by the belt conveyor. It can be processed.

Particularly, in the belt conveyor according to the second aspect of the present invention, since the carriage is moved in the carrying-in direction of the conveyed object and the portion overhanging on the input port can be pulled back, maintenance of the head pulley is safe and easy. You can

Further, in the belt conveyor according to the third aspect of the invention, since the collecting and dropping means has a closed structure, it is possible to prevent the granular powder scraped off the dirt surface by the belt cleaner from scattering out of the conveying system.

Further, in the belt conveyor according to the fourth aspect, since the seal plate is provided in the overhanging portion on the input port of the belt conveyor, the dust or the like blown up from the input port is blocked, and the belt is cut off. The working environment around the conveyor can be improved.

Furthermore, in the belt conveyor according to the fifth aspect of the invention, since the power of the collecting and dropping means is obtained from the belt return path through the guide roller, a separate driving means such as a reduction motor is not required and the cost is reduced. it can.

[Brief description of drawings]

FIG. 1 is a side view of a belt conveyor according to an embodiment of the present invention.

FIG. 2 is a front view of the same.

[Explanation of symbols]

 10 Belt Conveyor 11 Head Pulley 12 Endless Belt 12a Belt Forward 12b Belt Return 13 Carrier Roller 14 Conveyor Frame 14a Hood 15 Feeding Port 16 Partial Frame 16a Drop Chute 17 Frame 18 Rail 18a Stopper 19 Cart 20 Wheel 21 Recovery Case 22 Both Sides 23 Roller 24 Scraper 25 Sprocket 26 Sprocket 27 Chain 28 Scraper 29 Guide roller 30 Sprocket 31 Sprocket 32 Chain 33 Sprocket 34 Sprocket 35 Chain 36 Tension adjusting means 37 Mounting bracket 38 Seal plate

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Matsutaro Kajitani, 370 Sakata, Kimitsu, Chiba Prefecture, within the Kimitsu Branch, Hamada Heavy Industries Co., Ltd. (72) Masanori Tsugawa, 370, Sakata, Kimitsu, Chiba, Ltd.

Claims (5)

[Scope of utility model registration request] 1. A belt conveyer in which a head pulley is disposed overhanging on a loading port of an object to be conveyed, on a downwardly contaminated surface of a belt return path on the side of the head pulley that does not overhang on the loading port. A belt cleaner to be pressed against, a pressing roller that presses the belt return path on the head pulley side from above, and a collecting and dropping unit that collects the dropped granular powder scraped off by the belt cleaner and drops it into the input port. A belt conveyor characterized by being equipped. 2. A conveyor frame at an end portion on the side of the head pulley including the head pulley is separated and mounted on a carriage that is movable in the transport direction of the transported object.
2. The belt cleaner, the pressing roller, and the collecting and dropping means are attached.
Belt conveyor as described. 3. The belt conveyor according to claim 1, wherein the collecting and dropping means has a closed structure except for a portion overhanging on the input port. 4. The belt conveyor according to claim 1, wherein a seal plate is provided on the overhanging portion on the input port. 5. The belt conveyor according to claim 1, wherein the power of the collecting and dropping means is obtained from a guide roller pressed against the belt return path through a power transmission means.