JP4790221B2 - Storage and discharge device - Google Patents

Description

The present invention stores municipal waste, crushed oversized garbage, bark and other biomass, sludge, crushed building waste, and other items with low fluidity and angle of repose that have the property of being entangled or attached to each other. those concerning the storage discharge equipment for discharging accordingly.

  Conventionally, this type of storage and discharge device is constituted by a hopper portion having a substantially vertical side wall and a discharge mechanism at the bottom thereof. The discharge mechanism is a multiple screw conveyor type, a reciprocating rake type with a rake that has a wedge-shaped rake on the opposite side of the reciprocating movement, and a reciprocating plate with a total length in the direction of movement. There are types such as a floor moving type that changes the number of plates when moving in the recoil direction at the same time.

In the above storage and discharge device, the discharge port has a full width of movement of the discharge mechanism, and a side wall opening up to a position higher than the discharge mechanism. For the reciprocating rake type provided, it is usual to allow the height to be adjusted as an opening lower than the storage level, and for the floor moving type, the opening is usually set up to the maximum height of the storage level. The stored material is low in fluidity, and the discharge mechanism is stopped, so that the discharged material can be stopped and stored except for the material that collapses to the angle of repose.

  In the multiple screw conveyor type, the inside of the screw, that is, the part that has entered the area covered by the movement of the screw blade moves by being pushed by the screw blade itself, but the screw that is placed on the screw rotates. As a result, it moves while being mounted by the movement in the vicinity of the upper end of the screw blade that moves, and is carried to the discharge port and discharged.

  In the reciprocating rake type, when the rake normally reciprocates around a certain width in the moving direction and returns to the non-discharge side, the overload hardly moves due to the wedge effect and the absence of the discharge port, and the discharge side When proceeding to, the storage is pushed and moved on the bottom surface of the wedge, and the storage placed on the wedge is also moved together by the rake reciprocation width, and is repeatedly carried to the discharge port and discharged.

  In the floor movement type, usually, a set of three floor boards that reciprocate around a certain width with respect to the moving direction is arranged as a set, and three floor boards per set in the moving direction simultaneously have a certain width in the moving direction. Move by that amount, and the overlying storage also moves. Then, one floor board per set is sequentially returned by the predetermined width and returned to its original position. In the return operation of the floor board, the remaining two do not move for one return per set, so the overlying reservoir does not move. By repeating this, the entire stored material moves toward the discharge direction while moving in a certain width, and is carried to the discharge port and discharged.

In the multiple screw conveyor type and floor moving type discharge mechanisms, moving the discharge mechanism in the reverse direction compresses the overlying storage, so that the storage near the discharge is slightly in the direction opposite to the discharge direction. Can be moved.
JP 2003-54766 A

  In the storage and discharge device that discharges the overload by the movement of the discharge mechanism as described above, coal and grains do not have the property of being entangled or adhered to each other, and are easy to collapse Is discharged little by little according to the movement of the discharge mechanism. In addition, in order to equalize the discharge amount, there was an example in which a rotating scraper was provided so as to positively collapse the pile of the storage that moves to the vicinity of the discharge port.

  However, municipal waste, crushed bulky waste, bark and other biomass, sludge, crushed building waste, and other things that have the property of being entangled or attached to each other are difficult to unravel from the stored state. When the angle of repose is exceeded, it becomes overhanging when it is severe. Therefore, depending on the properties of the stored matter, a so-called dropping-out phenomenon occurs in which it collapses at the outlet and is discharged all at once.

As a result, the following problems occur depending on the properties of the stored matter.
When it is attempted to load the storage directly on the vehicle from the storage / discharge device, problems such as overloading, spilling from the loading platform, or damage to the vehicle due to the impact being dropped all at once occur. For this reason, if a person is attached and exceeds the angle of repose, it must be broken by heavy machinery, which is a burden on driving.

When the waste is received by the conveyor and transported or supplied to another place, it collapses and is discharged all at once, so that it exceeds the conveyor transport capacity and piles up at the connecting part to cause a bridge. Alternatively or cause bridging and clogging in the chute or conveyors swallowing unit for falling down into them in chunks of size greatly exceeding exit chute or conveyor width, problems such as causing the supply amount fluctuation far beyond acceptable subsequent equipment Occurs. Something that cannot be transported can damage the conveyor belt, or the conveyor can be damaged by the impact of stored material that collapses and falls all at once.

  For this reason, it is necessary to provide a bridge releasing device that breaks down using a hydraulic cylinder or the like, and it is still not complete, and every time a bridge occurs, the operation must be stopped and the bridge released. In addition, if the conveyor transport capacity has to be increased, the conveyor width is increased, and the swallowing section is enlarged so as not to cause a bridge or blockage, the equipment has a buffer and leveling function to equalize the allowable capacity of the subsequent stage. As a result, it will be necessary to increase the specifications of the subsequent devices and increase the number of devices.

  As described above, the storage materials having the property of being entangled with each other or attached to each other are systematic and expensive from the point of exiting the storage and discharge device, and are troublesome and troublesome. Therefore, the practical use of the storage and discharge device has been limited to a small scale, and the enlargement has been in danger. In addition, when the above-mentioned rotating scraper is provided, if a large object or string-like object is mixed in the storage, the rotation of the rotating scraper stops or wraps around and does not collapse, Because it was pushed and damaged, it was not usable.

The present invention has been made in view of the above, to provide a reservoir discharge equipment capable also for storage of property having a property of or each other adhere entangled with one another, level the emissions With the goal.

The invention according to claim 1, comprising a passage-shaped reservoir portion with a discharge mechanism in the bottom, the passage-like reservoir is configured to have a discharge opening in the transfer direction side wall, counter-transfer direction from the opening for exiting exhaust A reservoir input port on the side, storing the storage by mounting the storage from the storage input to the discharge mechanism, and operating the discharge mechanism to open the discharge storage In the storage and discharge device for transferring toward the discharge and discharging from the discharge opening, the end portions are attached in the vicinity of the discharge openings on both side walls of the passage-shaped storage portion, and the discharge opening has a slack crossing the discharge opening. It is characterized in that a flexible member is provided for shearing the overlying stored material transferred by the above-described operation and preventing dropping of the overlying stored material falling from the discharge opening.

According to a second aspect of the invention, the storage discharge apparatus according to claim 1, the flexible member is characterized by being kicked multiple set in the vertical direction of the side walls.

According to a third aspect of the present invention, in the storage / discharge device according to the first or second aspect, the upper attachment position of both ends of the flexible member is provided on the counter-transfer side of the overlying storage from the discharge opening. It is characterized by being.

According to a fourth aspect of the present invention, in the storage / discharge device according to the first, second, or third aspect, the flexible member is a connected body in which a chain, a wire, or a plurality of rods are movably connected in series. It is characterized by.

According to the first to fourth aspects of the present invention, the end portions are attached in the vicinity of the discharge openings on both side walls of the passage-shaped storage section, cross the discharge openings and have slack, and are transferred by the operation of the discharge mechanism. Since the flexible member that shears the incoming stored product and prevents the dropping of the upper stored product falling from the discharge opening is provided, the transferred stored material is sheared by the flexible member. Even for reservoirs that have the property of being entangled or attached to each other, the so-called deca drop phenomenon that occurs when the angle of repose exceeds the angle of repose at the outlet, collapses and is discharged all at once, is discharged. The amount can be leveled. For this reason, it is possible to solve the above-mentioned various problems caused by the debris dropping phenomenon of the storage, and to make the system using the storage and discharge device according to the present invention low-cost and less trouble and highly reliable. Become.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an external perspective view showing a configuration of a storage / discharge device according to the present invention. As shown in the figure, the storage and discharge device includes a passage-shaped storage unit 10, and a floor moving type discharge mechanism 14 described in detail later is disposed at the bottom of the storage unit 10. The storage unit 10 is open at the top, side walls 11 and 12 are provided on both sides, the end of the discharge mechanism 14 in the transfer direction is a discharge opening 15, and the end on the opposite side of the transfer direction is the side wall 13. Is provided. Further, a beam 23 is attached between the side walls 11 and 12 above the discharge opening 15, and beams 24 and 25 are attached between the upper ends of the side walls 11 and 12 between the beam 23 and the side wall 13. A space between the beam 25 and the side wall 13 serves as a storage port 16 through which the storage material M is input.

  Chain mounting brackets 17 and 18 are attached at predetermined intervals in the vertical direction of the inner surface of the side wall 11 near the discharge opening 15. In addition, chain mounting brackets 19 and 20 are attached to the inner surface of the side wall 12 in the vicinity of the discharge opening 15 in a vertical direction with a predetermined interval. A steel chain 21 is mounted across the discharge opening 15 between the chain mounting bracket 17 and the chain mounting bracket 19, and a steel chain 22 is discharged between the chain mounting bracket 18 and the chain mounting bracket 20. Attached across the opening 15. The chain 22 is attached so as to be located around 1/3 of the storage level of the storage unit 10, and the chain 21 is located around 2/3 of the storage level.

The chain 21 at the high position slightly enters the rear side (the side opposite to the storage side) of the discharge opening 15 from the chain 22 at the low position, and enters the repose angle A of the storage M from the lowermost end of the discharge opening 15. The position is such that most of the operating chains 21 and 22 enter the position above the extended surface, are substantially parallel to each other, and are fixed points (attachment positions) of the chains 21 and 22 on the left and right side walls 11 and 12. ) Is shifted in the height direction (the mounting position of the chain mounting bracket 20 is higher than the mounting position of the chain mounting bracket 18 (L1> L2), and the mounting position of the chain mounting bracket 19 is higher than the mounting position of the chain mounting bracket 17. high). Further, the chains 21 and 22 are slackened by connecting both ends to the chain mounting brackets 17 and 19 and the chain mounting brackets 18 and 20, respectively.

  The number of the chains 21 and 22 is not limited to two, and may be one or two. However, when the number is too large, it is not preferable that they are too close to each other and interfere with each other. The distance between the chains needs to be larger than the maximum length of the reservoir M so that the reservoir M is not trapped by the plurality of chains. In general, the pitch is set to 1 to 3 m so that the layer of the reservoir M that is not affected by the chain does not become 1 to 3 m or more. The pitch dimension is determined in accordance with the operation state of the storage / discharge device so that the pitch is finely broken to a level that does not hinder. Needless to say, the attachment position of the chain to the side walls 11 and 12 is not limited to that shown in FIG.

In the storage / discharge device having the above-described configuration, the storage M that has been carried to the discharge opening 15 by the floor moving type discharge mechanism 14 at the bottom of the storage unit 10 as shown by the arrow B in FIG. It strikes a chain 21, 22 provided across the opening 15, projects in the direction of travel, and expands in an arc shape. Therefore depot M becomes a state of being sheared is blocked by Ji E over emissions, a state that passes while being disturbed by the force from the chain 21 and 22, the upper and lower sides side of the chain 21, battered spills Get out. As described above, since the chains 21 and 22 are in a portion beyond the repose angle of the stored matter, the spilled material is dropped and discharged as it is.

  The chains 21 and 22 are slack, and the following various advantages arise. Since the chains 21 and 22 protrude in the traveling direction of the stored matter M and swell in an arc shape, the pulling force applied to the chains 21 and 22 and the chain mounting brackets 17 to 20 is greatly weakened by the vector. Further, since the chains 21 and 22 are arc-shaped in the traveling direction, the horizontal distance from the lower end of the discharge opening 15 differs between the center and the vicinity of the end side walls 11 and 12. Accordingly, the discharge of the stored matter M is temporally dispersed in the width direction, and the time leveling effect of the discharge amount occurs.

  In addition, since the chains 21 and 22 have an arc shape projecting in the traveling direction, the stored matter M works so as to be moved toward the center side by the chain, so that a force to spread between the side walls 11 and 12 is exerted. It is reduced, and bridging of the stored matter M at the outlet portion by being sandwiched between both side walls is avoided. In addition, since the chain is slackened, it works to escape from the flow of the reservoir M that is strongly pressed. This also works effectively to avoid compression of the stored matter M and make it easy to fall apart.

  By setting the side wall mounting positions at both ends of the churns 21 and 22 (the heights of the mounting positions from the upper surface of the transport mechanism 14) to different levels on the left and right, the force applied to the reservoir M can be asymmetrical. This helps to avoid bridging the reservoir M at the outlet by being sandwiched between the two. Further, the left-right asymmetry helps time dispersion in the discharge width direction.

  In the present embodiment, the amount of reaction force received from the storage material that is about to move to the discharge opening 15 generated in the chains 21 and 22 is increased by intermittently retracting the storage material M slightly. Can be avoided.

  In order to move the stored matter M backward, the moving direction when moving all the set plates of the floor moving type discharging mechanism 14 having the configuration described later may be set opposite to the discharging opening 15 side. As the chain continues to shear the stored material, the stored material M that is trapped by the chains 21 and 22 is spilled due to the retraction of the stored material, and the holding force received from the chain is relaxed. As a result, the resistance force increased by the reservoir M trapped in the chains 21 and 22 is returned to the resistance force that only the original chains 21 and 22 generate. Therefore, intermittent receding is appropriately implemented by checking the state of discharge of the stored material in the discharge opening 15 by ITV or the like.

  FIG. 3 is a diagram illustrating a configuration example of the floor moving type discharge mechanism 14. As shown in the figure, the floor moving type discharge mechanism 14 includes a plurality of floor plates 26 (26-1, 26-2, 26-3) that reciprocate back and forth with a constant width C in the moving direction. The set is arranged, and 3 pieces / set with respect to the moving direction are moved by a certain width C in the moving direction at the same time. Then, one floor plate 26 per set is sequentially returned by a predetermined width C and returned to the original floor plate position. In the returning operation of the floor plates 26 one by one, since there are two remaining / sets that do not move, the upper storage does not move. As a result, the upper storage moves by a certain width C. Further, in order to retreat the overlying stored material, it is possible to retreat by moving all the floor plates 26 and moving them by a fixed width in the opposite direction to the discharge opening 15 side.

In the storage and discharge device of FIG. 1, the floor moving type discharge mechanism 14 is used to transfer the stored matter M of the passage-shaped storage unit 10 to the discharge opening 15 side. For example, as shown in FIG. 4, a chain conveyor 33 suspended from a drive sprocket 31 and a driven sprocket 32 is provided at the bottom of a passage-shaped reservoir 10 composed of side walls 11, 12, and 13. The discharging mechanism 30 having the arranged configuration may be used. By rotating the chain conveyor 33 in the direction of arrow D by the drive sprocket 31, the overlying storage material moves toward the discharge opening 15. Reference numeral 34 denotes a chain support rail that supports the chain conveyor 33. Further, a multiple screw conveyor type discharge mechanism may be used.

  In addition, in the storage and discharge device of FIG. 1, the two chains 21 and 22 are attached in the vertical direction across the discharge opening 15, but the present invention is not limited to the chain. 3 or more may be connected in series by joint-like connection (movable connection) that can take a free angle. In short, it has flexibility as a whole, and any material that can withstand the applied force is acceptable. However, a thin thing is preferable so that the reaction force at the time of shearing the stored matter M may not become excessive. Moreover, it is preferable that it hangs down by dead weight.

  FIG. 5 is a diagram illustrating a configuration example of a waste incineration facility including a storage / discharge device. As shown in the figure, the waste incineration facility includes a fluidized bed gasification melting furnace comprising a fluidized bed gasification furnace 101 and a swirl melting furnace 102, a waste heat boiler 103, an air heater 104, an economizer 105, a gas temperature reducing tower 106, 1 dust collector 107, 2nd dust collector 108, induction fan 109, exhaust gas heater 110, catalytic reaction tower 111, and chimney 112 are provided. The storage / discharge device 116 according to the present invention receives garbage from a garbage truck 114 instead of a normally used garbage pit, and steeply leveles it to convey it to a conveyor 115, and a dust supply device 118 of the fluidized bed gasifier 101. In

The retentate inlet 16 of the storage discharging device 116 according to the present invention (see FIG. 1) is dust (waste) is turned and storage by plat- home 113 Karagomi (waste) collection vehicles 114. Garbage stored in the storage and discharge device 116 moves toward the discharge opening 15 by the operation of the discharge mechanism 4, abuts against the chains 21 and 22 provided across the discharge opening 15, and is loosened by being pushed. After being leveled and steeply leveled, the dust is fed into the dust feeder 118 by the conveyor 115. The dust supply device 118 has a fixed supply capability with a sealing mechanism inside and outside the furnace, and the waste introduced therein is introduced into the fluidized bed gasification furnace 101 at a predetermined supply amount, and gasified in the fluidized bed gasification furnace 101. The product gas 120 is produced. The product gas 120 is supplied to the swirl melting furnace 102 together with the fly ash, and is burned at a high temperature in the swirl melting furnace 102. The fly ash is melted at a high temperature by this high-temperature incineration, and becomes molten slag 121 and discharged out of the swirl melting furnace 102.

  The exhaust gas 122 from the swirling melting furnace 102 is recovered by heat through the waste heat boiler 103, the air heater 104 and the economizer 105, and then reduced to a predetermined temperature by the exhaust gas temperature reducing tower 106. The temperature-reduced exhaust gas 122 is sent to the first dust collector 107, and the first dust collector 107 collects and removes ash in the exhaust gas. The exhaust gas 122 from which the ash 124 has been collected and removed is added with slaked lime 123 and sent to the second dust collector 108, and the reaction product 125 is collected and removed by the second dust collector 108. The exhaust gas 122 from which the reaction product 123 has been removed is heated by the exhaust gas heater 110 and supplied to the catalytic reaction tower 111, NOx is removed by the catalytic reaction tower 111, and the chimney 112 is released into the atmosphere.

Dust discharged from the discharge opening 15 of the storage discharging device 116 as described above is loosened by the chain 21, the paper dust 118 on which leveled satisfactorily because that will be supplied to the steep leveling conveyor 115 And is supplied to the fluidized bed gasification furnace 101 in a fixed amount, so that there is no significant fluctuation of the generated gas in the fluidized bed gasification furnace 101. In addition, since it is well leveled by the steep slope leveling conveyor 115, it is possible to throw dust into the gasification furnace 101 without using a dust supply device 118 by using a separate inside and outside furnace sealing mechanism such as a double damper. It may be.

  FIG. 6 is a diagram showing a configuration example of a waste incineration facility provided with a storage / discharge device according to the present invention. In FIG. 6, the portions denoted by the same reference numerals as those in FIG. As shown in the figure, the present waste incineration facility is provided with a stoker incinerator 130 so that waste is thrown into the stoker incinerator 130 from the storage / discharge device 116 according to the present invention via the steep and leveling conveyor 115. It has become.

  In the embodiment shown in FIGS. 5 and 6, in the pit-and-crane method, first-in first-out, which is unavoidable, is eliminated and first-in first-out is performed, and garbage is mixed at the time of delivery of the steeply leveled conveyor 115 from the reception. Also, the effect of being uniform is produced, and stabilization of combustion is obtained.

  As an example of the waste incineration equipment, in FIGS. 5 and 6, a waste incineration equipment including a fluidized bed gasification melting furnace composed of a fluidized bed gasification furnace 101 and a swirl melting furnace 102 and a stoker incinerator 130 are provided. Although the example which uses the storage discharge apparatus concerning this invention for waste incineration equipment was demonstrated, the waste incineration equipment which uses the storage discharge apparatus concerning this invention is not limited to this, For example, a fluid bed incinerator Any waste incineration equipment provided with a furnace for incinerating waste may be used.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea described in the claims and the specification and drawings. Is possible.

It is an external view which shows the structural example of the storage-and-discharge apparatus which concerns on this invention. It is a figure for demonstrating operation | movement of the storage-and-discharge apparatus which concerns on this invention. It is a figure which shows the structural example of the discharge mechanism used for the storage discharge apparatus which concerns on this invention. It is a figure which shows the structural example of the discharge mechanism used for the storage discharge apparatus which concerns on this invention. It is a figure which shows the schematic system structural example of the waste incineration equipment which concerns on this invention. It is a figure which shows the schematic system structural example of the waste incineration equipment which concerns on this invention.

Explanation of symbols

10 reservoir 11 side wall 12 side wall 13 side wall 14 discharge mechanism 15 discharge opening 16 retentate inlet 17 chain mounting member 18 chain mounting bracket 19 chain mounting member 20 chain mounting member 21 chain 22 chain 23 beam 24 beam 25 beam 26 floor 30 Discharge mechanism 31 Drive sprocket 32 Driven sprocket 33 Chain conveyor 34 Chain support rail 101 Fluidized bed gasifier 102 Swivel melting furnace 103 Waste heat boiler 104 Air heater 105 Economizer 106 Exhaust gas temperature reduction tower 107 First dust collector 108 Second collection Dust collector 109 Induction blower 110 Gas heater 111 Catalytic reaction tower 112 Chimney 114 Garbage truck 115 Steep grader conveyor 116 Storage and discharge device 118 Dust collector 119 Garbage 120 Exhaust gas 121 Molten slag 122 Exhaust Scan 123 slaked lime 124 fly ash 125 reaction products 130 stoker incinerator

Claims (4)

It comprises a passage-like reservoir with a discharge mechanism at the bottom,
Said passage-like reservoir is configured to have a discharge opening in the transfer direction side wall, has a retentate inlet counter-transfer direction from the opening for exiting exhaust, a retentate in the discharge mechanism from該貯Tomebutsu inlet In the storage and discharge device for storing the storage by being mounted and transferring the storage to the discharge opening by operating the discharge mechanism, and discharging the discharge from the discharge opening,
End portions of the both side walls of the passage-like storage portion are attached in the vicinity of the discharge opening, cross over the discharge opening and have a slack, and shear the overlying storage transferred by the operation of the discharge mechanism. A storage / discharge device comprising a flexible member for preventing a drop of the overlying stored material falling from the discharge opening. The storage / discharge device according to claim 1,
The storage / discharge device, wherein a plurality of the flexible members are provided in the vertical direction of the side walls. In the storage and discharge device according to claim 1 or 2,
The storage / discharge device, wherein the upper and lower attachment positions of the flexible members are provided on the side opposite to the upper storage from the discharge opening. In the storage and discharge device according to claim 1, 2 or 3,
The said flexible member is the coupling body which connected the chain or the wire, or the several rod movably in series, The storage discharge apparatus characterized by the above-mentioned.

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