JP5276889B2 - Wood pellet conveyor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To achieve a woody pellet carrying device of a cable disc system, capable of reducing noise due to contact friction. <P>SOLUTION: The woody pellet carrying device includes a cylindrical carrying pipe 1 arranged in a loop shape, a wire cable 2 inserted into the carrying pipe, a plurality of platy discs 3A installed at intervals in a longitudinal direction of the wire cable, and a driving device inserted in a part of the loop of the carrying pipe and circulating the wire cable in the carrying pipe. The woody pellet carrying device carries woody pellets supplied from a feeding port opened on the carrying pipe, and discharged from the discharging port opened on the carrying pipe. The discs are formed so as to have a plurality of protrusions on an outer peripheral edge. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a wood pellet transport device, and more particularly to a transport device for transporting pelletized wood-based biomass fuel (hereinafter referred to as wood-based pellets).

  Absorption chiller / heater such as double-effect type uses a high-temperature regenerator that generates steam by heating a dilute solution of absorbent material that has absorbed steam, in addition to high-quality fuels such as gas and oil. From the viewpoint of effective use of resources and protection of the global environment, attempts have been made to use wood-based pellets as fuel (Patent Document 1).

  The wood pellets are formed by, for example, molding wood biomass fuel into a certain shape such as a columnar shape in consideration of handling. Such wood pellets are stored in a large-capacity storage tank, and a certain amount of wood pellets are cut out from the storage tank and directly supplied to the combustion furnace of the high temperature regenerator, or the combustion furnace of the high temperature regenerator. A method of supplying through a relatively small capacity hopper installed in the vicinity is adopted.

  By the way, the absorption chiller / heater is installed in the vicinity of a building or house that uses chilled / hot water, etc., so a large-capacity storage tank is installed away from the absorption chiller / heater due to the installation space There is. In this case, a transport device for transporting the wood pellets cut from the storage tank to the absorption chiller / heater is required.

  Generally, there are screw type, auger type, bucket type, cable disk type, etc. as a method for transferring solid transported items such as wood pellets, but a large capacity storage tank is separated from the absorption chiller / heater When the wood pellets are installed at a position and transported for a long distance, a cable disk type transport device is suitable.

  Conventionally, as shown in FIG. 6, a generally used cable disk transfer device is formed by inserting a wire cable 2 such as a steel wire into a cylindrical transfer pipe 1, and is made of resin at appropriate intervals in the wire cable 2. A metal disk-like disk 33 is fixed by an integrally formed mounting portion 34, the wire cable 2 is run in the transport pipe 1, and powder or particles such as feed fed into the transport pipe 1. The body is transported along with the disk 33. In addition, although FIG. 6 described as what conveys the wooden pellet 5 which concerns on this invention, the cable disc conveying apparatus which conveys the wooden pellet 5 is not necessarily known.

WO2008-010534 A1

  However, since the conventional cable disk transport device has a clearance (gap) between the transport pipe 1 and the outer periphery of the disk-shaped disk 33, the wood pellet 5 is present in the clearance as shown in FIG. May be bitten. By the way, since the wood pellet 5 is hard, the wire cable 2 is eccentric in a state where the disk 33 is placed on the bitten wood pellet 5, and the wood pellet 5 strongly contacts the inner surface of the transport pipe 1. Therefore, a high key noise is generated due to contact friction.

  The same phenomenon occurs when feed pellets are transported, but feed pellets are relatively oily and relatively slippery even if there is contact friction, so it will not be annoying noise, but wood pellets contain oil. Therefore, the contact friction noise cannot be reduced.

  A cable disk transport device that generates such contact friction noise becomes an obstacle when it is adopted in a device for transporting wood pellets for absorption chiller / heaters installed in urban areas or densely populated houses.

  In order to reduce the contact friction noise caused by biting, it is conceivable to reduce the disk diameter and increase the gap between the conveying pipe, but the amount of eccentricity by which the wire cable escapes upwards increases, and the disk increases. There is a problem that the amount of wood pellets that move is reduced.

  The problem to be solved by the present invention is to realize a wood disk pellet conveying apparatus of a cable disk type that can reduce noise caused by contact friction.

  The present invention relates to a cylindrical transport pipe arranged in a loop shape, a wire cable inserted into the transport pipe, and a plurality of plate-shaped discs mounted at intervals in the longitudinal direction of the wire cable. And a drive unit that is inserted into a part of the loop of the transport pipe and circulates the wire cable in the transport pipe, and transports the wood pellets supplied from the input port opened in the transport pipe, The basic structure is a wood pellet transport device that discharges from a discharge port opened in the transport pipe.

In particular, in order to solve the above problems, a first aspect of the present invention, the disc, of the wood pellets are caught toward the center of the sides of the polygon have a plurality of projections on the outer periphery It is characterized by being formed so as not to be recessed . This prevents the wood pellet from getting caught in the gap between the disc and the transport pipe because the wood pellet moves to a position outside the projection position even if the wood pellet tries to get caught in the gap between the disc and the transport pipe. it can. As a result, noise due to contact friction can be reduced.

  The second aspect of the present invention is characterized in that the plurality of protrusions of the disk are formed at a height in contact with the inner peripheral surface of the transport pipe.

  Thereby, since the protrusion of the disk comes into contact with the inner peripheral surface of the transport pipe, the eccentricity of the wire cable can be suppressed, and the wood pellets can be prevented from being caught in the gap between the disk and the transport pipe. As a result, noise due to contact friction can be reduced. In particular, even at the bent portion (corner portion) of the conveying pipe arranged in a loop shape, the wire cable is difficult to be eccentric, so that biting of the wood pellet can be suppressed.

In the above case Te odor, forming a disk in a so-called star-shaped, the apexes of the star corresponding to the vertices of the polygon can be brought into contact with the inner circumferential surface of the transport pipe.

  The disk may have a mounting portion fixed to the wire cable, and the mounting portion may be rotatably mounted around the wire cable. According to this, when the wood pellet tries to bite into the gap between the disc and the transport pipe, the disc can be rotated to avoid biting.

  The disk further includes a disk-shaped first disk having a diameter smaller than the inner diameter of the transport pipe, and a second disk formed with a plurality of protrusions on the outer peripheral edge. Can be configured such that the first disk is arranged in a mounting portion for fixing to the wire cable and is rotatably mounted around the wire cable.

  According to this, the eccentricity of the wire cable can be suppressed by freely providing the second disk according to the feature of the present invention to the existing wire cable carrying device provided with the disk-shaped first disk. And when the wood pellet tries to bite into the gap between the first or second disk and the transport pipe, the second disk rotates and the gap between the first and second disks and the transport pipe It is possible to avoid biting wood pellets.

  In this case, the second disk is formed with a slit having a width through which the mounting portion can be inserted from the center portion fitted to the mounting portion toward the periphery, so that the second disk can be inserted into the existing transport device. Can be easily installed.

  ADVANTAGE OF THE INVENTION According to this invention, when conveying a wood type pellet, the cable disc conveying apparatus which can reduce the noise by contact friction is realizable.

Hereinafter, an embodiment of a wood pellet conveying apparatus to which the present invention is applied will be described.
(Embodiment 1)

  FIG. 1 shows a configuration diagram of a main part of an embodiment of the wood pellet conveying apparatus of the present invention, and FIG. 2 shows an embodiment in which the wood pellet conveying apparatus of the present invention is applied to a high-temperature regenerator of an absorption chiller / heater. The whole block diagram is shown.

  As shown in FIG. 2, in the combustion furnace of the high-temperature regenerator 11 of the absorption chiller / heater, wood pellets are cut out by a predetermined amount from a hopper 12 that receives wood pellets by a cutting device 13, and passed through a chute 14. It comes to be supplied. On the other hand, a relatively large storage tank 15 for storing the wood pellets is installed at a location away from the high temperature regenerator 11, and the wood pellets are cut out from the storage tank 15 by the cutting device 16. The cut wood pellets are fed into the wood pellet transport device 20 from a feed port (not shown) of the transport pipe 1 provided by being inserted into the cut device 16. The wood pellets transported by the wood pellet transport device 20 are discharged from a discharge port formed in the transport pipe 1 of the wood pellet transport device 20 through a conduit communicating with the top of the hopper 12 of the high temperature regenerator 11. The hopper 12 is discharged by dropping.

  As shown in FIG. 2, the conveying pipe 1 of the wood pellet conveying device 20 is looped from the cutting device 16 through the hopper 12 of the high-temperature regenerator 11 to the cutting device 16 via the wire cable driving device 21. It is arranged. Further, a guide roller 22 for guiding the bending of the wire cable 2 is provided at a corner portion of the conveying pipe 1 arranged in a loop shape.

  The wire cable driving device 21 is inserted and arranged in the middle of the path of the transport pipe 1, and is configured to include a driving wheel 21A that is rotationally driven by a motor (not shown) and a driven wheel 21B that reverses the wire cable 2. The drive wheel 21A is engaged with the disk 3A of the wire cable 2 and runs the wire cable 2 by rotation. The driven wheel 21B applies appropriate tension to the wire cable 2 and guides the cutting device 16 by reversing the traveling direction of the wire cable 2 reversed by the drive wheel 21A.

  FIG. 1 shows a detailed configuration diagram of the inside of a transport pipe 1 according to the feature of the present invention. FIG. 2A is a perspective view showing the inside of the conveying pipe 1 as seen through, FIG. 2B is a sectional view seen from the side, and FIG. 2C is a radial sectional view. . As shown in these figures, a cylindrically shaped transport pipe 1, a wire cable 2 inserted through the transport pipe 1, and a plate-like shape mounted at equal intervals in the longitudinal direction of the wire cable 2 A plurality of disks 3A are provided.

  The disk 3 </ b> A is formed with a plurality of protrusions in contact with the inner peripheral surface of the transport pipe 1 on the outer peripheral edge. In other words, the disk 3A of the present embodiment is formed in a star shape by denting a hexagonal side that is a polygon toward the center. The disc 3A thus formed is fixed to the wire cable 2 by a mounting portion 4A in which a through hole through which the wire cable 2 is inserted is formed at the center. The mounting portion 4A is integrally formed with the resin disk 3A.

  The operation of the wood pellet conveying apparatus 20 configured as described above will be described. When the wire cable driving device 21 is driven, the driving wheel 21A rotates, the disk 3A is locked to the protrusion of the driving wheel 21A, and the wire cable 2 is moved. Thereby, the wire cable 2 travels clockwise in the conveyance pipe 1 in FIG. 2 and conveys the wood pellets cut by the cutting device 16 to the position of the hopper 12. Wood pellets are dropped into the hopper 12 from a discharge port provided in the transport pipe 1 at the position of the hopper 12. The wood pellets dropped into the hopper 12 are cut out by the cutting device 13 and supplied to the combustion furnace of the high-temperature regenerator 11 through the chute 14.

  Here, the operation of the characteristic part of the present embodiment will be described. As shown in FIG. 1, the state of the wood pellets 5 transported by the wood pellet transport device 20 is transported in the transport pipe 1 with the movement of the disk 3 </ b> A traveling in the transport pipe 1. The disk 3 </ b> A has a star-shaped protrusion formed by denting a polygonal side part toward the center, and the protrusion moves while contacting the inner peripheral surface of the transport pipe 1. Thereby, since the traveling position of the wire cable 2 is held at substantially the center of the transport pipe 1, the eccentricity of the wire cable 2 can be suppressed. As a result, the wood pellets are not caught in the gap between the disk 3A and the transport pipe 1, and noise due to contact friction can be reduced. For example, even if the wood pellets are bitten at the apex, which is the protrusion of the disk 3A, the wood pellets move to the recesses of the disk 3A, and the wood system is in the gap between the protrusion of the disk 3A and the transport pipe 1. The pellet is not bitten. Furthermore, since the eccentricity of the wire cable 2 can be suppressed, stable conveyance can be realized.

In particular, even at the bent portion (corner portion) of the conveying pipe 1 arranged in a loop shape, the wire cable 2 is difficult to be eccentric, so that the biting of the wood pellet can be suppressed.
(Embodiment 2)

  In FIG. 3, the detailed block diagram inside the conveyance pipe 1 of Embodiment 2 of the wooden pellet conveying apparatus of this invention is shown. FIG. 2A is a perspective view showing the inside of the conveying pipe 1 as seen through, FIG. 2B is a sectional view seen from the side, and FIG. 2C is a radial sectional view. . This embodiment is different from the first embodiment shown in FIG. 1 in that the star-shaped recess of the disk 3B is formed large. Since the other points are the same as those of the first embodiment, the same reference numerals are given and description thereof is omitted.

According to the present embodiment, the same effects as those of the first embodiment can be obtained.
(Embodiment 3)

  In FIG. 4, the detailed block diagram inside the conveyance pipe 1 of Embodiment 3 of the wooden pellet conveying apparatus of this invention is shown. FIG. 2A is a perspective view showing the inside of the conveying pipe 1 as seen through, FIG. 2B is a sectional view seen from the side, and FIG. 2C is a radial sectional view. . This embodiment differs from Embodiment 1 of FIG. 1 in that the star shape of the disk 3C is a pentagon, that the height of the star apex is lower than the inner diameter of the transport pipe 1, and that the disk 3C is It is to be freely mounted around the wire cable 2 via a separate mounting tool 4B. Since the other points are the same as those of the first embodiment, the same reference numerals are given and description thereof is omitted.

According to the third embodiment, as described in the first and second embodiments, when the gap between the concave portion of the star disk 3C and the conveying pipe 1 tries to bite the wood pellet 5, the wood pellet 5 is Escape to the larger gap. As a result, noise due to contact friction can be reduced. In particular, according to the third embodiment, since the disk 3C is rotatably mounted between the two mounting tools 4B fixed to the wire cable 2, the gap between the concave portion of the star-shaped disk 3C and the transport pipe 1 is provided. However, when trying to bite the wood pellet 5, the disk 3C itself rotates and prevents the wood pellet 5 from being bitten, so that noise due to contact friction can be more reliably reduced.
(Embodiment 4)

  In FIG. 5, the detailed block diagram inside the conveyance pipe 1 of Embodiment 4 of the wooden pellet conveying apparatus of this invention is shown. FIG. 2A is a perspective view showing the inside of the conveying pipe 1 as seen through, FIG. 2B is a sectional view seen from the side, and FIG. 2C is a radial sectional view. . This embodiment is different from the first embodiment shown in FIG. 1 in that, for example, the star-shaped disk 3D according to the present invention is mounted on an existing wire cable transfer device in which a disk-shaped disk 33 is mounted. It is embodiment which is going to solve the subject of. Since the other points are the same as those of the first embodiment, the same reference numerals are given and description thereof is omitted.

  That is, the star-shaped disk 3D of the fourth embodiment has a hexagonal star-shaped apex height that is equal to the inner diameter of the transport pipe 1, and the disk 3D is mounted on the disk-shaped disk 33. It has a hole in the central part that fits freely around the wire cable 2 through 34, and a center part that fits in the mounting part 34, and has a width that allows the mounting part 34 to be inserted from the hole toward the periphery. A slit 6 is formed.

  According to the fourth embodiment, in addition to the effects of the first and third embodiments described above, by attaching the disk 3D as a retrofit to the existing wire cable transport device in which the disk-shaped disk 33 is mounted, contact is achieved. The effect of reducing noise due to friction can be realized.

It is a block diagram of the conveyance pipe provided with the disk of the characterizing part of Embodiment 1 of the wood pellet conveying apparatus of the present invention. It is a whole block diagram of one Embodiment which applied the woody pellet conveying apparatus of this invention to the high temperature regenerator of an absorption cold / hot water machine. It is a block diagram of the conveyance pipe provided with the disk of the characterizing part of Embodiment 2 of the wooden pellet conveying apparatus of the present invention. It is a block diagram of the conveyance pipe provided with the disk of the characterizing part of Embodiment 3 of the wooden pellet conveying apparatus of the present invention. It is a block diagram of the conveyance pipe provided with the disk of the characterizing part of Embodiment 4 of the wooden pellet conveying apparatus of this invention. It is a block diagram of the conveyance pipe of the wire cable conveying apparatus of a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Conveyance pipe 2 Wire cable 3A, 3B, 3C, 3D, 33 Disc 4A Installation part 4B Installation tool 5 Wood pellet 6 Slit 34 Installation part

Claims (4)

A cylindrical transport pipe arranged in a loop, a wire cable inserted into the transport pipe, a plurality of plate-like disks mounted at intervals in the longitudinal direction of the wire cable, and the transport A drive unit that is inserted into a part of a loop of the pipe and circulates the wire cable in the transport pipe, transports the wood pellets supplied from the input port opened in the transport pipe, A wood pellet conveying device for discharging from an opened discharge port,
The disk, wood pellet conveying apparatus characterized by comprising formed by recessing as not to wood pellets are caught toward the center of the sides of the polygon have a plurality of projections on the outer periphery . In the wood pellet conveying apparatus according to claim 1,
The wood pellet conveying apparatus, wherein the plurality of protrusions of the disk are formed at a height in contact with the inner peripheral surface of the conveying pipe. In the wood pellet conveying apparatus according to claim 1 or 2 ,
The disk has a mounting portion fixed to the wire cable, and is mounted on the mounting portion so as to freely rotate around the wire cable. A cylindrical transport pipe arranged in a loop, a wire cable inserted into the transport pipe, a plurality of plate-like disks mounted at intervals in the longitudinal direction of the wire cable, and the transport A drive unit that is inserted into a part of a loop of the pipe and circulates the wire cable in the transport pipe, transports the wood pellets supplied from the input port opened in the transport pipe, A wood pellet conveying device for discharging from an opened discharge port,
The disk includes a disk-shaped first disk having a diameter smaller than the inner diameter of the transport pipe, and a second disk mounted on the wire cable side by side with the first disk ,
The second disk is formed in a concave shape so as to prevent the wood pellet from being bitten toward the center of a polygonal side having a plurality of protrusions on the outer peripheral edge, and the plurality of protrusions are transported A center portion formed at a height in contact with the inner peripheral surface of the pipe, and further mounted around the wire cable so as to rotate freely around the mounting portion for fixing the first disk to the wire cable, and fitted into the mounting portion. A wood pellet conveying apparatus, characterized in that a slit having a width through which the mounting portion can be inserted is formed toward the periphery .

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