JP4339985B2 - Wood chip throwing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wood chip dispensing device that is incorporated in a loading device for unloading wood chips in a first container to a second container via an air transportation pipe and throws the wood chips in the first container to an entrance of the transportation pipe. In particular, the present invention relates to a wood chip dispensing device incorporated in a loading device that unloads wood chips in a cargo ship hold by moving them through a transport pipe.
[0002]
[Prior art]
When unloading the wood chips loaded in the cargo ship's hold to the specified container on land, clamshell buckets (hanging containers), belt conveyors, or combinations of these have been used. Because there is no fluidity to move to a low place due to gravity acting on itself, loading of wood chips near the bottom of the hold takes time and may not be able to be taken out. Work such as moving the chip was necessary. In addition, when a clamshell bucket is used to load wood chips loaded on a small ship (barge) into the hold of a large cargo ship, a large amount of dust may be scattered, resulting in environmental pollution and fishery compensation problems. In particular, when there is wind, waves, etc., the position of the bucket changes, making the operation difficult and increasing the danger associated with the work. In order to solve the above problems, the present inventor filed a Japanese Patent Application No. 2000-146497 “Wood Chip Conveying Method and Apparatus” on May 18, 2000 (prior application). The main point is that the chip is moved along with the air in the transport pipe and unloaded.
[0003]
The prior art of moving powder or granular material together with air through a transport pipe can be found, for example, in “Snow and Ice Particle Transporting Device” of Japanese Patent Publication No. 7-121374. This device sucks natural or artificial snow and ice particles into the suction pipe together with air to form a slope for snow sports or a snow field, and ejects it from the discharge end through the transport pipe and the discharge main body. By ejecting compressed air along the axis toward the discharge end in the ejector part provided in the main body and mixing it with snow ice particles, negative pressure is generated in the suction pipe and the transport pipe, and the snow ice particles can be transported by air. Yes. In this apparatus, the snow and ice particles that have moved through the transport pipe are ejected from the discharge end together with the transport air.
[0004]
Japanese Patent Application Laid-Open No. 8-91564 discloses a “transfer pipe, and a granular material transfer apparatus using the transfer pipe and its method”, which include a transfer pipe and a hopper that are attached by inserting an air injection pipe through an inlet. Disclosed is a granular transfer device comprising a separation receiver tank and a storage tank. In the apparatus of this publication, the transferred granular material and air are supplied to the hopper, the granular material is retained in the hopper, and the air is released to the atmosphere. The granular material in the hopper is dropped into the storage tank by opening the shutter below the hopper.
[0005]
[Problems to be solved by the invention]
A first object of the present invention is to eliminate a problem in a conventional method for unloading wood chips, and in an apparatus for unloading wood chips by moving them in a transport pipe together with air, the wood chips loaded in a wide first container. It is to provide a wood chip dispensing device capable of efficiently ejecting from each part to a wood chip intake of a transport pipe. Another object of the present invention is to throw out wood chips that can continuously and efficiently supply an appropriate amount of wood chips into the transport pipe of the unloading device by continuously collecting and jumping up the appropriate amount of wood chips in the first container. Is to provide a device.
[0006]
Another object of the present invention is to enable each part of the wood chip dispensing device to be driven by a single hydraulic motor, to share the hydraulic power source with the other parts of the unloading device, simplify the configuration, manufacture cost and It is to reduce the operating cost. Still another object of the present invention is to provide a wood chip dispensing apparatus in which the orientation of the chip dispensing apparatus can be freely changed and the collection of wood chips can be smoothly collected from each part in the first container. It is to be. Other objects and advantages of the present invention will become apparent in the following description.
[0007]
[Means for Solving the Problems]
The wood chip throwing device of the present invention is a jumper that jumps up a wood chip, a collector that moves the wood chip toward the jumper, and a guide that guides the jumped wood chip from an inlet end to a receiving outlet end. It comprises a drive motor that drives the duct and the leap and collector. The exit end of the guide duct can be connected to an intake of a lifting device that unloads the wood chips from the first container to the second container. The wood chip dispensing device of the present invention can have the following configuration.
[0008]
(1) The jumper includes a plurality of blades extending in a substantially radial direction from a horizontal rotation axis, and the wood chip engaged with the tip of the blade is rotated to the inlet end of the guide duct by rotating the rotation shaft. Thrown toward. (2) The collector includes a pair of spirals rotated by a common axis of rotation and twisted in opposite directions. (3) A leap device is arranged at the center in the length direction of the pair of spiral bodies. (4) Both the common rotation axis of the collector and the rotation axis of the leap are extended in the horizontal direction and perpendicular to each other. (5) A pair of spiral bodies of the jumper and the collector are driven by one hydraulic motor. (6) One end of the guide duct has a vertical central axis and is opened downward above the jumper.
[0009]
(7) A swivel joint is arranged at the inlet end of the guide duct, and the swivel joint can rotate the guide duct around the central axis of the inlet end. (8) The unloading device connected to the wood chip dispensing device includes a wood chip outlet provided at the other end of the transport pipe, and an air flow generating mechanism for generating an air flow from the vicinity of the intake port to the wood chip outlet in the transport pipe. And a transfer mechanism for transferring the wood chip discharged from the wood chip outlet into the second container.
(9) The ejector of the unloading device is connected to the exit end of the guide duct. (10) The ejector is supported by a roller that runs on a rail arranged in an arc shape around the central axis in the vertical direction of the inlet end of the guide duct.
[0010]
The unloading apparatus incorporating the wood chip dispensing apparatus of the present invention is a unloading apparatus that unloads wood chips from a first container to a second container, and includes a transport pipe provided at one end that is movable in the first container, A wood chip collector connected to the other end of the transport pipe and capable of separating the air flow from the wood chip, an air flow generating mechanism for generating an air flow from the vicinity of the inlet to the wood chip collector in the transport pipe, and the wood chip A transfer mechanism for transferring the wood chips discharged from the collector into the second container is included. The intake port disposed at one end of the transport pipe includes a collector for collecting the wood chips and a jumper for jumping the collected wood chips into the transport pipe through the guide duct and one end of the transport pipe.
[0011]
The wood chip dispensing device of the present invention can have the following configuration. (11) The air flow generation mechanism is an ejector that is disposed adjacent to the guide duct and supplies a transport air flow into the transport pipe. (12) The guide duct is formed by a curved pipe, and the ejector can rotate by a predetermined angle with respect to the collector around the inlet end of the guide duct. (13) The ejector is slidably supported on an arc-shaped rail fixed to the upper frame of the collector. (14) The first container is a cargo ship hold. (15) The transport pipe and the wood chip collector are arranged on the cargo ship. (15) The second container is disposed on land. (16) The transfer mechanism includes a belt conveyor.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
1 to 4 show an ejector which is a part of the wood chip dispensing device and the unloading device according to the embodiment of the present invention, and FIG. 5 shows the unloading device in which the wood chip dispensing device of the present invention can be incorporated. . In FIG. 1 to FIG. 5, members or portions denoted by the same reference numerals indicate the same or corresponding members. Referring to FIGS. 1 to 3, a wood chip throwing device generally indicated by reference numeral 20 includes a jumper 30 that jumps up the wood chip 12, a collector 35 that moves the wood chip toward the jumper 30, a jumper A guide duct 19 that receives the raised wood chip from the inlet end 17 and guides it to the outlet end 18, and a drive motor 52 that drives the jumper 30 and the collector 35 are provided. The outlet end 18 of the guide duct 19 is connected to an inlet 21 of the unloading device 6 for unloading the wood chips from the first container to the second container.
[0013]
The jumper 30 of the wood chip throwing device 20 includes a plurality of blades 34 extending substantially radially from the rotation shaft 32, and the rotation shaft 32 is rotated at, for example, 850 to 1000 rpm and engaged with the blades 34. The wood chip 12 is thrown out toward the inlet end 17 of the guide duct 19. The throwing amount is, for example, 150 m ³ / h. The collector 35 includes a pair of symmetrical spiral bodies (ribbon screws) 36 and 37 that are twisted in opposite directions and fixed on a common rotation shaft 38, and are, for example, 160 to 190 rpm by the common rotation shaft 38. Is driven to rotate. A substantially second half outer peripheral portion of the spiral body is covered with a frame plate 134. The diameter of the spiral is about 70 cm, for example. The length B (the total length of the spiral) on the common rotation axis 38 of the pair of spirals is, for example, about 190 cm. The center of the jumper 30 is disposed near the center of the pair of spiral bodies. The common rotating shaft 38 of the collector 35 and the rotating shaft 32 of the jumper 30 are both extended in the horizontal direction and perpendicular to each other. A pair of spiral bodies 36 and 37 of the jumper 30 and the collector 35 are driven by one hydraulic motor 52. The driving pressure oil for the hydraulic motor 52 is advantageously a common hydraulic source for the unloading device.
[0014]
A pulley 111 is fixed to one end of the common rotation shaft 38 of the spiral bodies 36 and 37. As shown in FIG. 2, a drive belt 113 is stretched between a drive pulley 112 and a pulley 111 driven by a hydraulic motor 52, so that the spiral bodies 36 and 37 can be driven to rotate in a predetermined direction by the hydraulic motor 52. These pulleys and drive belt 113 are covered by a cover 114 for safety. Instead of such a transmission mechanism, a transmission mechanism using another drive mechanism, for example, a chain, a rotating rod, or the like can be used. The transmission mechanism can include a clutch, a brake, and the like as necessary. In FIG. 2, the rotary shaft 32 of the jumper 30 is directly connected to the rotary shaft of the hydraulic motor 52 or connected via a transmission gear.
[0015]
As shown in FIGS. 2 and 3, the collector 36 includes an upper frame 135, a lower frame 136, and a vertical frame 137, and the lower frame 136 includes a plurality of traveling wheels 138. The outer diameter of the traveling wheel 138 is, for example, 30 cm, and the height H from the ground contact surface of the traveling wheel 138 to the upper surface of the upper frame 135 is, for example, 79 cm. The upper frame 135 includes an arcuate rail 73 that is spaced a predetermined distance above and extends in the horizontal direction. The inlet end 17 of the guide duct 19 is opened downward above the jumper 30 with a vertical central axis C. A swivel joint 16 is disposed at the inlet end 17 of the guide duct 19 to enable the collector 36 and the ejector 171 to rotate relative to each other. The swivel joint 16 can rotate the guide duct 19 around the central axis C of the inlet end 17.
[0016]
FIG. 5 is a schematic layout diagram of the unloading device 6 into which the wood chip dispensing device 20 can be incorporated. The unloading device 6 includes a transport pipe 25 having an intake 21 capable of sucking the wood chips 13 at one end, a tip collector 40 disposed at the other end of the transport pipe 25, and separating the wood chips from the transport air, and a transport pipe. 25, an air flow generation mechanism (ejector) 171 for generating an air flow from the vicinity of the inlet 21 toward the tip collector 40 is provided. The wood chips supplied from the intake 21 into the transport pipe 25 are moved by the transport air flow toward the chip collector 40 through the transport pipe 25 and are transferred to the chip collector 40 communicated with the other end of the transport pipe 25. Inflow. The transport tube 25 has an inner diameter D of, for example, about 32 cm, and includes a vertical slide tube 22, a flexible tube 26, and a horizontal slide tube 23.
[0017]
The chip collector 40 separates the air flow flowing in from the inlet 41 and the wood chips by centrifugal separation, discharges the separated wood chips from the wood chip outlet 43 below the chip collector 40, and separates the separated dust. The contained air is discharged from the exhaust port 42. The discharged wood chip 12 is transferred into the second container 50 by carrying-out means such as a discharge pipe 44. The dust-containing air is introduced into the dust collector 80 through the first exhaust pipe 46 and the second exhaust pipe 47 from the exhaust port 42 and removed, and passes through the gas outlet 85, the third exhaust pipe 86, and the silencer 90 of the dust collector 80. Released as air 91. The dust 84 separated by the dust collector 80 is discharged from the dust discharge port 83.
[0018]
In the unloading device 6 of FIG. 5, the air flow generating mechanism jets high-speed air from the ejector 171 provided in the intake 21 of the transport pipe 26 into the transport pipe 26 in the direction along the axis of the transport pipe. High pressure air for that purpose is supplied from the high pressure air source 60 to the ejector 171 via the air hose 62. FIG. 4 shows an example of an ejector. As shown in FIG. 4, the ejector 171 includes an air chamber 66 that surrounds the transport pipe 25, and the air chamber 66 is communicated with the inside of the transport pipe via a ring-shaped air injection port 67 over the entire circumference of the transport pipe 25. The The air injection port 67 has a directionality in the axial direction so that an air flow is formed along the axis E of the transport pipe 25. The high-pressure air supplied from the air hose 62 to the air chamber 66 is discharged from the air jet port 67 in the axial direction, and flows into the transport pipe 25 from the inlet of the transport pipe 25 to the tip collector at the other end of the transport pipe. Creates a flow.
[0019]
As shown in FIG. 1, the outlet end 18 of the guide duct 19 of the wood chip dispensing device 20 communicates with the ejector 171 of the unloading device, and the inlet end 17 of the guide duct 19 is connected to the collector 36 via the swivel joint 16. The upper frame 135 is supported by the upper frame 135 and is opened above the jumper 35. The swivel joint 16 is rotatable around a vertical central axis C of the inlet end 17 of the guide duct 19. The ejector 171 of the lifting device is fixed to the upper ends of the plurality of vertical support plates 75, and the lower ends of the plurality of vertical support plates 75 are fixed to one end of the horizontal support plate 76. The other end of the horizontal support plate 76 is fixed in the vicinity of the inlet end 17 of the guide duct 19. The horizontal support plate includes a pair of rollers 74 below one end thereof. A pair of rollers 74 is engaged with rails 73 secured to the upper frame 135 of the collector 36.
[0020]
The rail 73 has an arc shape centered on the vertical central axis C of the inlet end 17 of the guide duct 19, and when the guide duct 19 and the upper frame 135 of the collector 35 rotate relative to each other about the axis C, the collector 35 moves concentrically with the guide duct inlet end. The arcuate rail 73 and the pair of guide rollers 74 change the horizontal engagement position by this relative rotation, but the vertical position of both does not change. Therefore, the ejector 171 does not change the upper frame of the collector 35. The state of being supported in the vertical direction by 135 is maintained. The solid line ejector 171 in FIG. 3 has its longitudinal axis parallel to the rotational axis 38 of the spirals 36, 37 of the collector 35, and the dotted line ejector 171 in FIG. The spiral bodies 36 and 37 are inclined at about 50 degrees with respect to the rotation axis 38.
[0021]
The exit end 18 of the guide pipe 19 of the wood chip dispensing device 20 is communicated with the intake 21 of the ejector 171 of the unloading device, and the wood chip dispensing device 20 is disposed in the first container 10 in which the wood chips are accommodated. Pressure oil is supplied to the hydraulic motor 52. When the hydraulic motor 52 is supplied with pressure oil and rotates, the spiral bodies 36 and 37 of the collector 35 and the blades 34 of the jumper 30 are rotated via a transmission mechanism including a drive belt and a pulley. The spiral bodies 36 and 37 are twisted (wound) around the rotation shaft 38 in opposite directions, and when the rotation shaft 38 is driven to rotate in a predetermined direction, the wood chips that touch both the spiral bodies 36 and 37 are The helixes 36 and 37 are gathered toward the connecting portion, that is, the jumper 30.
[0022]
The wood chips collected by the spirals 36 and 37 toward the jumper 30 are engaged near the tip of the blade 34 during high-speed rotation of the jumper 30 and are disposed above the jumper 30. The guide duct 19 is jumped up toward the inlet end 17. The inlet end 17 of the guide duct 19 has an air flow 69 that is attracted by the jet air stream 68 of the ejector 171, so that the wood chips that are jumped towards the inlet end 17 of the guide duct 19 are guided along with the air flow 69. Ascending in the duct 19, the gas is supplied into the transport pipe 25 through the outlet end 18 of the guide duct 19 and the intake 21 of the transport pipe 25. The wood chips supplied into the transport pipe 25 through the intake 21 are conveyed by the air flow flowing through the transport pipe 25 and moved into the chip collector 40 of FIG.
[0023]
The wood chip and the carrier air that have flowed into the chip collector 40 are centrifuged, and the wood chip 12 is discharged into the second container 50 via the wood chip outlet 43 and the discharge pipe 44 of the chip collector 40. The The air containing the dust separated from the wood chip in the chip collector 40 is introduced into the dust collector 80 through the first exhaust pipe 46 and the second exhaust pipe 47 from the exhaust port 42 to be removed, and the gas outlet of the dust collector 80 is removed. 85, the third exhaust pipe 86, and the silencer 90 are discharged as air 91. The dust 84 separated by the dust collector 80 is discharged from the dust discharge port 83.
[0024]
The wood chip throwing device 20 collects the wood chips 12 forming and distributing the deposits 13 in the first container 10 and jumps them into the guide duct 19 by a plurality of wheels 138 attached to the lower frame 136. It is moved horizontally on the floor of one container 10. The guide duct 19 and the collector 35 can be rotated relative to each other by the swivel joint 16, and the rotation axis of the collector 35 has a degree of freedom in the horizontal direction, whereby the collector 35 is made of the wood chips in the first container 10. It can be easily collected by placing it nearby.
[0025]
【The invention's effect】
The wood chip dispensing device of the present invention can collect wood chips lacking in fluidity without human intervention and supply them together with air into the transport pipe, and can easily incorporate the wood chips into the transport pipe by incorporating them into the wood chip unloading device. Can be pneumatically transported. The wood chip dispensing apparatus of the present invention can continuously throw out a proper amount of wood chips into the transport pipe into the wood chip inlet, and can efficiently operate the transportation apparatus. The wood chip dispensing device of the present invention can be driven by a single hydraulic motor, and each part of the wood chip dispensing device can be simply configured.
[0026]
Since the wood chip dispensing device of the present invention can share the unloading device and the hydraulic pressure source, the configuration is simple and the manufacturing cost and the operation cost can be reduced. In the wood chip dispensing apparatus of the present invention, the orientation of the chip dispensing apparatus, particularly the collector for collecting the wood chips, can be freely changed, and the collection of the wood chips can be collected smoothly from each part in the first container. .
[Brief description of the drawings]
FIG. 1 is a schematic front view of a wood chip ejection device and an ejector according to an embodiment of the present invention.
FIG. 2 is a schematic side view of the wood chip dispensing device as seen from the direction of arrow A in FIG.
FIG. 3 is a schematic top view of the wood chip dispensing device of FIG. 1;
4 is a schematic sectional side view of the ejector of FIG. 1;
FIG. 5 is a schematic layout of a lifting device that can incorporate the wood chip dispensing device of the present invention.
[Explanation of symbols]
6: unloading device, 10: first container, 12: wood chip, 13 :, 16: swivel joint, 17: inlet end, 18: outlet end, 19: guide duct, 20: wood chip dispensing device, 21: picking Inlet, 22: vertical slide tube, 23: horizontal slide tube, 25: transport tube, 26: flexible tube, 30: jumper, 32: rotating shaft, 34: blade, 35: collector, 36, 37: spiral , 38: common rotating shaft, 40: chip collector, 41: inlet, 42: exhaust port, 43: wood chip outlet, 44: discharge pipe, 46: first exhaust pipe, 47: second exhaust pipe, 50: Second container, 52: Hydraulic motor, 60: High pressure air source, 62: Air hose, 64: Connection flange, 66: Air chamber, 67: Air injection hole, 68: Injection air flow, 72: Connection flange, 73: Rail, 74: roller, 75: vertical support plate, 6: horizontal support plate, 80: dust collector, 83: dust discharge port, 84: dust, 85: gas outlet, 86: third exhaust pipe, 90: silencer, 91: air, 111, 112: pulley, 113 : Drive belt, 114: cover, 134: frame plate, 135: upper frame, 136: lower frame, 137: vertical frame, 138: running wheel, 171: ejector. B: total length of spiral body, C inlet end axis, D: transport pipe inner diameter, E: transport pipe axis, H: frame height.

Claims (8)

A jumper (30) for jumping up the wood chips, a collector (35) for moving the wood chips toward the jumper, and guiding the jumped wood chips from the inlet end (17) to the receiving outlet end (18) A guide duct (19) formed by a curved pipe , and a drive motor (52) for driving the jumper and collector,
The inlet end (17) of the guide duct has a central axis (C) in the vertical direction and is opened downward above the jumper, and a swivel joint (16) is arranged at the inlet end of the guide duct. The joint is capable of rotating a guide duct around the central axis (C),
The outlet end (18) of the guide duct is connected to an ejector (171) that generates an air flow for conveying the wood chips, the ejector being rotatable about the inlet end of the guide duct, and A wood chip throwing device (20) supported by a roller traveling on a rail (73) arranged in an arc shape with the central axis (C) as a center .   The jumper (30) includes a plurality of blades (34) extending in a substantially radial direction from a rotation shaft (32) in a substantially horizontal direction, and the wood engaged with the tip of the blade by rotating the rotation shaft. 2. The wood chip dispensing device according to claim 1, wherein the chip is thrown toward the inlet end (17) of the guide duct.   The collector (35) includes a pair of oppositely twisted spirals (36, 37) rotated by a common axis of rotation (38), the longitudinal center of the pair of spirals The wood chip throwing device according to claim 1 or 2, wherein the leap device (30) is disposed on the wood chip.   The wood chip throwing device according to claim 3, wherein the common rotating shaft (38) of the collector and the rotating shaft (32) of the jumper are both extended in the horizontal direction and perpendicular to each other.   The wood chip dispensing device according to any one of claims 1 to 4, wherein the plurality of blades (34) of the jumper and the pair of spiral bodies (36, 37) of the collector are driven by one hydraulic motor. . The wood chip dispensing device according to any one of claims 1 to 5, wherein the ejector (171) has an air chamber (66) surrounding a transport pipe (25), the air chamber being transported. It communicates with the inside of the transport pipe via a ring-shaped air jet (67) around the entire circumference of the pipe, and the air jet has an axis line so that an air flow (68) is formed along the axis (E) of the transport pipe. Wood chip throwing device with directionality to the direction . A loading device (6) for unloading wood chips from a first container (10) to a second container (50),
A transport pipe (25) provided at one end with an intake (21) movable in the first container, a wood chip collector (40) connected to the other end of the transport pipe and capable of separating the wood chip and the air flow; and A transfer mechanism (44) for transferring the wood chips discharged from the wood chip collector into the second container;
An unloading device in which the wood chip dispensing device (20) according to any one of claims 1 to 6 is connected to an inlet (21) of the transport pipe . The unloading device according to claim 7 , wherein the first container (10) is a cargo ship hold, the transport pipe (25) and the wood chip collector (40) are arranged on the cargo ship, and the second container (50 ) Unloading device placed on land.

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