JP2007131413A - Powder and granular material conveyance device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a powder and granular material conveyance device capable of achieving silent operation sound and scraping off an adhered substance SM adhered onto a conveyance plate 46. <P>SOLUTION: This powder and granular material conveyance device is provided with a cylindrical body 41 extended from a charging position to a discharging position of a powder and granular material P and the conveyance plate 46 advancing in the inside of the cylindrical body 41 to convey the powder and granular material P. This device is provided with a scraping-off device 5 rotating in synchronization with the conveyance plate 46 to scrape off the adhered substance SM adhered onto the conveyance plate 46 close to the discharge position in the inside of the cylindrical body 41. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a transport device for transporting adhesive powder particles such as sand, incineration ash, ore, and clay.

As this kind of transport device, a transport plate such as a scraper is attached to the transport chain, and the transport plate is advanced while being guided along the cylinder, thereby transporting the sticky granular material to a predetermined discharge position. There is one which is made to do (patent document 1).
JP-A-11-240607

  However, in the above conveying apparatus, deposits such as a part of the granular material and its fine particles are likely to adhere to the conveying plate. Thus, when an adhering substance adheres to a conveyance board, the fall of conveyance efficiency will be caused.

  Therefore, a scraping device shown in FIGS. 6 and 7 is used in order to scrape off deposits on the transport plate. The scraping device shown in FIG. 6 is a transfer device in which a transfer chain CH is wound around a sprocket SR, and a plurality of transfer plates C are connected to the chain CH, and the transfer plate C advances near the discharge side of the transfer device. The cleaner plate CB is attached to the front in the direction so as to be able to swing back and forth about the shaft rod S, and the cleaner plate CB is urged by a coil spring CS so that the front end is always directed rearward in the traveling direction of the transport plate C. When the transport plate C to which the deposit SM is attached reaches the discharge side of the transport device while proceeding in the direction of arrow F, the tip of the cleaner plate CB hits the upper position on the front in the travel direction of the transport plate C. With the tip of the cleaner plate CB pressed against the front surface of the transport plate C as the plate C advances, the cleaner plate CB swings forward in the direction of travel around the shaft rod S against the coil spring CS. At this time, the deposit SM adhered to the transport plate C is scraped off by the tip of the cleaner plate CB. After this, the cleaner plate CB moves over the transport plate C from which the deposit SM has been scraped off to the rear side, and is moved to the upper position in the front of the transport plate C in the advancing direction again by the tensile force of the coil spring CS. Oppositely, the same operation as described above is repeated.

  Further, in the scraping device shown in FIG. 7, a cleaner plate CB curved in a semicircular arc shape is attached near the discharge side of the conveying device so as to be swingable about a shaft S. This cleaner plate CB is supported via a coil spring CS so that its curved tip always points to the front side in the direction of travel of the conveying plate C, which is almost directly below the sprocket SR that hangs the chain CH. When the conveying plate C to which the deposit SM has adhered reaches the discharge side of the conveying device while moving in the direction of the arrow R opposite to the case of FIG. 6, the tip of the cleaner plate CB is the traveling direction of the conveying plate C The cleaner plate CB hits the upper position on the front surface, and the cleaner plate CB is pressed against the coil spring CS with the tip of the cleaner plate CB pressed against the front surface of the transfer plate C as the transport plate C advances. While moving forward in the advancing direction, the movement proceeds to the lower front side, and at this time, the deposit SM adhered to the conveying plate C is scraped off by the tip of the cleaner plate CB. After this, the cleaner plate CB moves over the transport plate C from which the deposit SM has been scraped off to the rear in the traveling direction, and is moved to the upper position on the front surface in the traveling direction of the transport plate C, which is moved again by the tensile force of the spring CS. Oppositely, the same operation as described above is repeated.

  However, in each of the above devices, after the deposit SM on the conveying plate C is scraped off, the cleaner plate CB gets over the conveying plate C, and the transfer plate C proceeds next by the tensile force of the coil spring CS. The impact sound at that time is large because it collides with the front surface in the direction, and particularly when there is little deposit SM adhering to the transport plate C, the impact sound becomes very large.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a granular material conveying device that can quietly scrape off deposits that are quiet in operation noise and adhere to a conveying plate.

  In order to achieve the above object, the present invention includes a cylindrical body extending from the charging position to the discharging position of the granular material, and a transport plate that travels through the cylindrical body and transports the granular material. There is provided a scraping device that rotates in synchronization with the transport plate and scrapes the adhering matter attached to the transport plate near the discharge position inside the cylindrical body.

  When the granular material conveyed by the conveying plate reaches near the discharge side, the adhering material adhering to the conveying plate is surely scraped off by the scraping device that rotates in synchronization with the conveying plate. In this way, by scraping off the deposits on the conveying plate by the rotation of the scraping device, there is no collision sound as in the conventional case, and the granular material can be conveyed silently.

  In a preferred embodiment of the present invention, the scraping device includes a plurality of rotating blades and a driving mechanism that drives the rotating blades, and the driving mechanism advances the conveying plate after the conveying plate discharges the granular material. The tip of the rotating blade contacts and is pressed against the upper position of the direction front, and the tip of the rotating blade moves to the lower side of the conveying plate as the conveying plate advances in this pressed state. Progression and rotation of the rotating blades are performed in synchronization. According to this configuration, after discharging the granular material by the transport body, the tip of the rotary blade comes into contact with the upper position of the transport plate and is pressed against the rotary plate as the transport plate advances in this pressed state. Since the tip of the transfer plate moves to the lower side of the conveyance plate, the adhering matter adhering to the conveyance plate is surely scraped off by the rotating blades from the upper part to the lower part of the conveyance plate.

  Moreover, in preferable embodiment of this invention, a rotary blade is rotated in the same direction with respect to the advancing direction of the said conveyance board. According to this configuration, the adhering matter adhering to the transport body is surely scraped off by the two actions of the hitting action and the scraping action by the rotating blades.

  Furthermore, in a preferred embodiment of the present invention, the drive mechanism of the scraping device is linked to a drive source that drives the transport plate. According to this configuration, since the scraping device can be driven by the drive source of the transport plate, the overall configuration is simplified.

  According to the above granular material conveying apparatus, the adhering matter adhering to the conveying plate can be surely scraped off while the operation sound is quiet.

  Hereinafter, the granular material conveying apparatus concerning this invention is demonstrated based on drawing. FIG. 1 is a side view showing a part of a conveying apparatus according to an embodiment of the present invention. The granular material conveying device T conveys the granular material almost vertically from a low position to a predetermined height position, and a supply unit 1 having a granular material input hopper 1a at a low position is provided. A discharge section 2 having a discharge hopper 2 a is provided at a high position, and an intermediate transport section 3 is formed between the supply section 1 and the discharge section 2. The supply unit 1, the discharge unit 2, and the intermediate transfer unit 3 are provided with a transfer mechanism 4 that transfers the granular material P put into the hopper 1 a of the supply unit 1 to the discharge unit 2 and discharges it from the discharge hopper 2 a. ing.

  The transport mechanism 4 includes a cylinder 41 extending between the charging hopper 1a and the discharge hopper 2a, a pair of left and right drive sprockets 42 provided on the discharge hopper 2a side inside the cylinder 41, A pair of left and right driven sprockets 43 provided on the charging hopper 1a side inside the cylinder body 41, a plurality of pairs of intermediate sprockets 44 disposed between the sprockets 42 and 43, and the sprockets 42 to 44 are hung around. Two parallel strips of transported chains 45, a large number of transport plates 46 connected between the chains 45 and proceeding integrally, and transported over the range of the input hopper 1a and the discharge hopper 2a inside the cylinder body 41 A guide 47 is provided along the plate 46. A drive motor 48 equipped with a speed reducer 48a is mounted on the cylinder 41 near the discharge hopper 2a. By rotating the chain 45 by driving the motor 48, the charging hopper 1a The charged granular material P is transported to the discharge unit 2 along the guide 47 and the surrounding cylindrical body 41 by the transport plate 46 that travels integrally with the chain 45.

  2 is an enlarged side sectional view showing the discharge unit 2 of the granular material conveying device T, FIG. 3 is a front sectional view as seen from the XX line direction of FIG. 2, and FIG. 4 is a YY line of FIG. It is the front sectional view seen from the direction. As shown in FIG. 4, the transport plate 46 is formed in a hexagonal shape when viewed from the front, and both left and right sides of the transport plate 46 are connected to two transport chains 45 via shackles 49. Further, a scraping device 5 for scraping off the deposit SM adhering to the transport plate 46 is provided in the cylinder 41 above the discharge hopper 2a.

  As shown in FIG. 2, the scraping device 5 includes a plurality of rotating blades 51 provided at an upper portion near the discharge end of the transport chain 45 and a driving mechanism 52 for driving the rotating blades 51. 52, when the transport plate 46 comes close to the discharge end of the transport chain 45, the tip of the rotary blade 51 comes into contact with the upper position of the front surface of the transport plate 46 in the direction of travel and is pressed. In this state, it is set so that the advance of the transport plate 46 and the rotation of the rotary blade 51 are performed in synchronization so that the tip of the rotary blade 51 moves to the lower side of the transport plate 46 as the transport plate 46 advances. .

  More specifically, the drive mechanism 52 supports the first transmission sprocket 53 provided at one end of the drive shaft 40 that supports the drive sprocket 42 and the rotary blade 51 as shown in FIGS. A support shaft 60 provided near the rotating shaft 50 is hung between a second transmission sprocket 54 supported opposite to the first transmission sprocket 53 and the first and second transmission sprockets 53, 54. Transmission chain 55, a first spur gear 56 supported by the support shaft 60 of the second transmission sprocket 54, and a second spur gear supported by the rotation shaft 50 of the rotary blade 51 and always meshing with the first spur gear 56. 57. As the drive sprocket 42 rotates, the rotary blade 51 is transferred to the transport plate via the first transmission sprocket 53, the transmission chain 55, the second transmission sprocket 54, the first spur gear 56, the second spur gear 57, and the rotary shaft 50. 46 is rotated in the Z2 direction, the same direction as the traveling direction Z1.

  The drive mechanism 52 of the rotary blade 51 is interlocked with the transport mechanism 4 and is driven by the same drive source as the transport mechanism 4. Specifically, as shown in FIGS. 2 and 3, the drive sprocket 48 b is attached to the shaft end of the drive sprocket 48 b attached to the speed reducer 48 a of the drive motor 48 and the drive sprocket 42 of the chain 45. And a driven sprocket 58 provided opposite to each other. Then, the rotating blade 51 is rotated in conjunction with the transport chain 45 by driving the drive motor 48.

  Next, the movement when transporting the granular material P using the transport device T configured as described above will be described. First, when the granular material P is conveyed, the granular material P is charged into the cylindrical body 41 of the conveying mechanism 4 from the charging hopper 1 a of the supply unit 1. Then, the powder plate P introduced into the cylindrical body 41 is guided by the guide plate 47 in the cylindrical body 41 and the surrounding cylindrical body 41 by the transport plate 46 that travels through the transport chain 45 as the drive motor 48 is driven. Is conveyed to the discharge unit 2 along the line.

  And the granular material P is conveyed by the conveyance board 46 to the discharge part 2, and is discharged | emitted below from the discharge hopper 2a. After the powder P is discharged, the deposit SM adhering to the transport plate 46 is scraped off as shown in FIG. 5 by the scraping device 5 disposed near the discharge unit 2. That is, as shown in FIG. 5A, the tip of the rotary blade 51 is brought into contact with and pressed against the upper position of the front surface in the traveling direction of the transport plate 46, and in this pressed state, (b) in FIG. ), (C) and (d), the tip of the rotary blade 51 is gradually shifted to the lower side of the transport plate 46 as the transport plate 46 advances, and the deposit SM is transported by the tip of the rotary blade 51. The entire surface from the upper part to the lower part of the plate 46 is scraped off and reliably scraped off.

  When the deposit SM is scraped off by the rotary blades 51 as described above, the conventional collision noise is not generated, so that the granular material P can be conveyed quietly. Further, when the deposit SM is scraped off by the rotary blade 51, the rotation direction Z2 of the rotary blade 51 and the traveling direction Z1 of the transport plate 46 are set in the same direction. SM is surely scraped off by two actions, a knocking action and a scraping action by the rotary blade 51. Furthermore, since the drive mechanism 52 of the scraping device 5 is interlocked with the drive motor 48 that drives the transport plate 46, the overall configuration is simplified. Thus, after scraping off the deposit SM adhered to one transport plate 46 by one rotary blade 51, the rotary blade 51 that rotates next is moved to the front side of the next transport plate 46 that follows. The deposit SM that contacts and adheres to the transport plate 46 is scraped off in the same manner.

It is a side view which cuts off and shows a part of granular material conveying apparatus concerning one Embodiment of this invention. It is a sectional side view which expands and shows the discharge part of a granular material conveying apparatus. It is the front sectional view seen from the XX line direction of FIG. It is the front sectional view seen from the YY line direction of FIG. It is a side view explaining a state when the deposit | attachment adhering to the conveyance board is scraped off with a scraping apparatus. It is a side view which shows an example of the scraping apparatus used conventionally. It is a side view which shows the other example of the scraping apparatus conventionally used similarly.

Explanation of symbols

41 Cylindrical body 46 Conveying plate 48 Drive source (drive motor)
5 Scraping device 51 Rotating blade 52 Drive mechanism P Powder body SM Deposit Z1 Traveling direction of transport plate Z2 Rotating direction of rotating blade

Claims (4)

  A granular material conveying apparatus comprising a cylindrical body extending from a charging position to a discharging position of a granular material, and a conveying plate for conveying the granular material by traveling inside the cylindrical body, the cylindrical body A granular material conveying device provided with a scraping device that rotates in synchronism with the conveying plate and scrapes the adhering matter adhering to the conveying plate near the discharge position.   In Claim 1, the scraping device comprises a plurality of rotating blades and a driving mechanism for driving the rotating blades, and the driving mechanism is arranged on the front surface in the advancing direction of the conveying plate after the conveying plate discharges the granular material. Advance and rotate the transport plate so that the tip of the rotating blade contacts and is pressed against the upper position, and the tip of the rotating blade moves to the lower side of the transport plate as the transport plate advances in this pressed state. A granular material conveying device that synchronizes the rotation of the blades.   The granular material conveying apparatus according to claim 1 or 2, wherein the rotating blades are rotated in the same direction with respect to the traveling direction of the conveying plate.   4. The granular material conveying apparatus according to claim 1, wherein a driving mechanism of the scraping apparatus is linked to a driving source that drives the conveying plate.

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