Combustion equipment

Abstract

A combustion facility is provided that can stabilize the combustion state of materials to be treated in a combustion device. [Solution] The combustion equipment 2 includes a receiving hopper 10 that receives the material 4 to be treated, a combustion device 20 that incinerates the material 4 to be treated, a supply conveyor 30 that is located on the supply path from the receiving hopper 10 to the combustion device 20 and transports the material 4 to be treated, and an adjustment device 40 that adjusts the supply amount of the material 4 to be treated on at least one of the upstream and downstream sides of the supply conveyor 30.

Description

[Technical Field]

[0001] The technology disclosed in the present application relates to combustion equipment. [Background technology]

[0002] The combustion equipment installed in the combustion facility incinerates the supplied materials to be treated. If the combustion state of the materials to be treated is stable, the life of the combustion facility can be expected to be extended. Therefore, it is preferable to stabilize the combustion state.

[0003] However, if the amount of material to be treated supplied to the combustion device fluctuates, the combustion state also tends to fluctuate, which may result in an impact on the service life of the combustion equipment.

[0004] Therefore, in the technology described in Patent Document 1, when materials to be burned are fed into an incinerator using a conveyor, the height of the materials to be burned on the conveyor is detected, and the combustion conditions are controlled based on the detected height. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 05-272732 Summary of the Invention [Problem to be solved by the invention]

[0006] However, in the technology described in Patent Document 1, although a sensor or a camera is provided to detect the height of the material to be combusted, it is not possible to reduce fluctuations in the amount of material to be combusted supplied to the incinerator.

[0007] An object of the technique disclosed in the present application is to provide combustion equipment that can stabilize the combustion state of the material to be treated in the combustion device. [Means for solving the problem]

[0008] According to a first feature, the combustion equipment includes a receiving hopper that receives the material to be treated, a combustion device that incinerates the material to be treated, a supply conveyor that is located on a supply path from the receiving hopper to the combustion device and transports the material to be treated, and an adjustment device that adjusts the supply amount of the material to be treated on at least one of the upstream and downstream sides of the supply conveyor.

[0009] In the combustion equipment according to the first feature, when the adjusting device adjusts the supply rate of the material to be treated on the upstream side of the supply conveyor, the variation in the material on the supply conveyor is reduced, and the fluctuation in the supply rate of the material to be treated supplied to the combustion device can be reduced. Also, when the adjusting device adjusts the supply rate of the material to be treated on the downstream side of the supply conveyor, the fluctuation in the supply rate of the material to be treated supplied to the combustion device can be reduced even if the material varies on the supply conveyor. Therefore, the combustion state of the material to be treated in the combustion device can be stabilized.

[0010] According to a second feature, in the combustion equipment according to the first feature, the adjustment device adjusts the supply amount of the material to be treated per unit time on at least one of the upstream and downstream sides of the supply conveyor so that it does not exceed a predetermined amount.

[0011] In the combustion equipment according to the second feature, when the adjusting device adjusts the supply amount of the material to be treated per unit time on the upstream supply path from the outlet of the receiving hopper to the entrance of the supply conveyor so that it does not exceed a predetermined amount, the variation in the amount of material to be treated on the supply conveyor is further reduced, and as a result, the fluctuation in the amount of material to be treated supplied to the combustion device can be further reduced. Also, when the adjusting device adjusts the supply amount of the material to be treated per unit time on the downstream supply path so that it does not exceed a predetermined amount, the fluctuation in the amount of material to be treated supplied to the combustion device can be further reduced even if the amount of material to be treated varies on the supply conveyor. Therefore, the combustion state of the material to be treated in the combustion device can be reliably stabilized.

[0012] According to a third feature, in the combustion equipment according to the first or second feature, the adjusting device includes a first sensor that detects an accumulation state of the materials in the downstream supply path from the outlet of the supply conveyor to the inlet of the combustion device. The adjusting device adjusts the downstream supply amount of the materials per unit time on the downstream supply path based on the accumulation state detected by the first sensor so that it does not exceed a predetermined amount.

[0013] In the combustion equipment according to the third feature, the use of the first sensor makes it easier to reduce fluctuations in the downstream supply amount per unit time of the material to be treated supplied to the combustion device, thereby reliably stabilizing the combustion state of the material to be treated in the combustion device.

[0014] According to a fourth feature, in the combustion facility according to the third feature, the adjustment device includes an adjustment control unit that controls the supply conveyor based on the accumulation state detected by the first sensor.

[0015] In the combustion equipment according to the fourth feature, the adjustment control unit controls the opening and closing of the first damper, so that the materials discharged from the supply conveyor are temporarily accumulated on the first damper, and the first damper can be opened and closed at a timing that reduces fluctuations in the downstream supply amount. Therefore, the combustion state of the materials in the combustion device can be more reliably stabilized.

[0016] According to a fifth feature, in the combustion equipment according to the fourth feature, the adjustment control unit continues operation of the supply conveyor until the accumulation state detected by the first sensor reaches a first reference state. The adjustment control unit stops operation of the supply conveyor when the accumulation state detected by the first sensor reaches the first reference state. After the supply conveyor has stopped operating, the adjustment control unit resumes operation of the supply conveyor when the accumulation state detected by the first sensor has not reached the first reference state.

[0017] In the combustion equipment according to the fifth feature, when the accumulation state reaches the first reference state, the materials accumulated on the first damper are discharged downstream, thereby reducing fluctuations in the downstream supply amount, thereby more reliably stabilizing the combustion state of the materials in the combustion device.

[0018] According to a sixth feature, in the combustion equipment according to the fourth or fifth feature, the adjustment device includes a first damper that opens and closes the downstream supply path. The first damper has a first closed state and a first open state. The first damper is positioned so that the materials discharged from the supply conveyor are piled up on the first damper in the first closed state. When the first damper changes from the first closed state to the first open state, the materials piled up on the first damper are discharged downstream. The first sensor detects the piled up state of the materials on the first damper in the first closed state.

[0019] In the combustion equipment according to the sixth feature, the materials discharged from the supply conveyor are temporarily accumulated on the first damper, and the first damper can be opened and closed according to the accumulation state of the materials on the first damper using the output of the first sensor. This makes it easier to adjust the downstream supply amount, and more reliably stabilizes the combustion state of the materials in the combustion device.

[0020] According to a seventh feature, in the combustion equipment according to the sixth feature, the first sensor detects a first distance from the first sensor to the object to be treated on the first damper as the accumulation state.

[0021] In the combustion equipment according to the seventh feature, the accumulation state of the materials on the first damper can be detected with a relatively simple configuration by detecting the first distance with the first sensor. Therefore, it is possible to more reliably stabilize the combustion state of the materials in the combustion device while suppressing an increase in the cost of the combustion equipment.

[0022] According to an eighth feature, in the combustion equipment according to the seventh feature, the adjustment control unit continues operation of the supply conveyor when the first distance is longer than a first reference distance. The adjustment control unit stops operation of the supply conveyor when the first distance is equal to or shorter than the first reference distance. After stopping operation of the supply conveyor, the adjustment control unit resumes operation of the supply conveyor when the first distance is longer than the first reference distance with the first damper in the first closed state.

[0023] In the combustion equipment according to the eighth feature, the supply conveyor is stopped when the piled state reaches the first reference state, thereby reducing fluctuations in the amount of materials piled up on the first damper. This reduces fluctuations in the downstream supply amount, suppresses increases in the cost of the combustion equipment, and more reliably stabilizes the combustion state of the materials in the combustion device.

[0024] According to a ninth feature, in the combustion equipment according to any one of the first to eighth features, the adjustment device includes a first supply pusher provided on an upstream supply path from the outlet of the receiving hopper to the inlet of the supply conveyor, which supplies the material to be treated from the receiving hopper to the supply conveyor, and an adjustment control unit which controls the first supply pusher so that the upstream supply amount of the material to be treated per unit time on the upstream supply path does not exceed a predetermined amount.

[0025] In the combustion equipment according to the ninth feature, the first supply pusher can reduce fluctuations in the upstream supply amount, thereby reducing the unevenness of the materials on the supply conveyor. This also makes it easier to reduce fluctuations in the downstream supply amount, further stabilizing the combustion state of the materials in the combustion device.

[0026] According to a tenth feature, in the combustion facility of the ninth feature, the first supply pusher includes a first pusher body movable between a forward end and a backward end, and a first pusher drive device that moves the first pusher body between the forward end and the backward end. The adjustment control unit controls the first pusher drive device to adjust the amount of material supplied from the first supply pusher to the supply conveyor.

[0027] In the combustion equipment according to the tenth feature, the first pusher body, the first pusher drive device, and the adjustment control unit can further reduce fluctuations in the upstream supply amount, thereby further reducing variations in the materials on the supply conveyor. Therefore, it becomes easier to reduce fluctuations in the supply amount of materials discharged from the supply conveyor, and the combustion state of the materials in the combustion device can be more reliably stabilized.

[0028] According to an eleventh feature, in the combustion equipment according to the tenth feature, the adjustment control unit controls the first pusher drive device so that the first pusher body repeats the operation of moving forward for a first drive time and stopping for a first stop time when moving from the rear end to the forward end.

[0029] In the combustion equipment according to the eleventh feature, fluctuations in the upstream supply amount of the material to be treated can be more reliably reduced, and the unevenness of the material on the supply conveyor can be more reliably reduced. Therefore, fluctuations in the supply amount of the material to be treated discharged from the supply conveyor can also be more reliably reduced, and the combustion state of the material to be treated in the combustion device can be more reliably stabilized.

[0030] According to a twelfth feature, in the combustion equipment according to any one of the first to eleventh features, the adjustment device includes a second supply pusher. The second supply pusher is provided in the downstream supply path and supplies the material to be treated discharged from the supply conveyor to the combustion device.

[0031] In the combustion equipment according to the twelfth feature, the second supply pusher can supply the material to be treated to various types of combustion devices, thereby improving the convenience of the combustion equipment while reliably stabilizing the combustion state of the material to be treated in the combustion device. [Effects of the Invention]

[0032] The technology disclosed in the present application can provide combustion equipment that can stabilize the combustion state of the material to be treated in the combustion device. [Brief explanation of the drawings]

[0033] [Figure 1]FIG. 1 is a schematic diagram of a combustion facility according to an embodiment. [Figure 2] FIG. 2 is a partial schematic configuration diagram of the combustion facility shown in FIG. [Figure 3] FIG. 3 is a block diagram of the combustion facility shown in FIG. [Figure 4] FIG. 4 is a flowchart showing the control of the combustion facility shown in FIG. [Figure 5] FIG. 5 is a flowchart showing the control of the combustion facility shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0034] Hereinafter, embodiments will be described with reference to the drawings, in which the same reference numerals indicate corresponding or identical components.

[0035] As shown in Figure 1, the combustion equipment 2 includes a receiving hopper 10, a combustion device 20, and a supply conveyor 30. The receiving hopper 10 receives the material 4 to be treated. The combustion device 20 incinerates the material 4 to be treated. The supply conveyor 30 is provided on a supply path from the receiving hopper 10 to the combustion device 20 and transports the material 4 to be treated.

[0036] For example, materials 4 stored in a pit are dumped into a receiving hopper 10 by a crane 5. The crane 5 may be manually operated by an operator, or may be automatically operated based on the detection results of a hopper sensor provided above the receiving hopper 10.

[0037] Here, examples of the material to be treated 4 include waste (general waste, industrial waste), biomass, etc. In this embodiment, the combustion facility 2 will be described assuming that the material to be treated 4 is industrial waste.

[0038] As shown in FIG. 2, the supply conveyor 30 includes a conveyor casing 32 and a conveyor body 34. The conveyor casing 32 includes an entrance 32A and an exit 32B. The conveyor body 34 transports the workpieces 4 entering through the entrance 32A to the exit 32B. The conveyor body 34 includes, for example, a transport member 36 and a drive motor 38. The transport member 36 is driven by the drive motor 38 to transport the workpieces 4. Examples of the supply conveyor 30 include a flight conveyor, a belt conveyor, and an apron conveyor. When the workpieces 4 contain liquid, a flight conveyor is preferred as the supply conveyor 30.

[0039] The combustion equipment 2 includes a first chute 6 and a second chute 7. The first chute 6 is connected to an inlet 32A of the conveyor casing 32. The second chute 7 is connected to an outlet 32B of the conveyor casing 32.

[0040] As shown in FIG. 2 , the combustion equipment 2 includes an adjusting device 40. The adjusting device 40 adjusts the supply amount of the materials 4 to be treated on at least one of the upstream and downstream sides of the supply conveyor 30. The adjusting device 40 adjusts the supply amount of the materials 4 to be treated per unit time on at least one of the upstream and downstream sides of the supply conveyor 30 so that it does not exceed a predetermined amount. In this embodiment, the adjusting device 40 adjusts the supply amount of the materials 4 to be treated on both the upstream and downstream sides of the supply conveyor 30 so that it does not exceed a predetermined amount on both the upstream and downstream sides of the supply conveyor 30. However, the adjusting device 40 may be configured to adjust the supply amount of the materials 4 to be treated only on one of the upstream and downstream sides of the supply conveyor 30. The adjusting device 40 may adjust the supply amount of the materials 4 to be treated only on one of the upstream and downstream sides of the supply conveyor 30 so that it does not exceed a predetermined amount.

[0041] The adjusting device 40 adjusts the supply amount of the material 4 to be treated in at least one of the upstream supply path from the outlet 10A of the receiving hopper 10 to the entrance 32A of the supply conveyor 30 and the downstream supply path from the exit 32B of the supply conveyor 30 to the entrance 20A of the combustion device 20. The adjusting device 40 adjusts the supply amount of the material 4 to be treated per unit time in each of the upstream supply path and the downstream supply path so that it does not exceed a predetermined amount.

[0042] The adjustment device 40 includes a first supply pusher 50. The first supply pusher 50 is provided on the upstream supply path and supplies the workpieces 4 from the receiving hopper 10 to the supply conveyor 30. The adjustment device 40 adjusts the upstream supply amount of the workpieces 4 per unit time on the upstream supply path by the first supply pusher 50.

[0043] The first supply pusher 50 includes a first pusher body 52 and a first pusher drive device 54. The first pusher body 52 is movable between a forward end and a backward end. The first pusher drive device 54 moves the first pusher body 52 between the forward end and the backward end. The back-and-forth reciprocating motion of the first pusher body 52 pushes the workpiece 4 forward.

[0044] The first pusher driving device 54 includes, for example, a hydraulic cylinder 54A and a hydraulic driving circuit 54B. The hydraulic cylinder 54A is connected to the first pusher body 52. ​​The hydraulic driving circuit 54B includes a hydraulic pump, a hydraulic valve, etc. The first pusher driving device 54 may be a device other than a hydraulic device.

[0045] The first supply pusher 50 includes a first pusher casing 56. The first pusher body 52 is movably provided within the first pusher casing 56. The hydraulic cylinder 54A is attached to the first pusher casing 56. The first pusher casing 56 is connected to the outlet 10A of the receiving hopper 10 and to the inlet 6A of the first chute 6. The first supply pusher 50 pushes the materials 4 that fall into the first pusher casing 56 from the receiving hopper 10 toward the first chute 6. The pushed materials 4 fall into the supply conveyor 30 via the first chute 6 and are transported by the supply conveyor 30 toward the second chute 7.

[0046] The adjustment device 40 includes a first damper 70 and a second damper 80. The first damper 70 opens and closes the downstream supply path. The second damper 80 is located downstream of the first damper 70 and opens and closes the downstream supply path. The first damper 70 and the second damper 80 form a double damper that isolates the internal space 32S of the conveyor casing 32 of the supply conveyor 30 from the internal space 20S (e.g., the combustion chamber 26A) of the combustion device 20. By providing the second damper 80 in addition to the first damper 70, the downstream supply path between the supply conveyor 30 and the combustion chamber of the combustion device 20 can be kept isolated at all times. This reduces or prevents air from flowing from the supply conveyor 30 into the combustion device 20, thereby more reliably stabilizing the combustion state of the material to be treated in the combustion device 20.

[0047] The first damper 70 has a first closed state and a first open state. In the first closed state, the first damper 70 isolates the upstream space from the downstream space of the first damper 70. In the first open state, the first damper 70 connects the upstream space to the downstream space of the first damper 70. The first damper 70 is attached to the second chute 7 and is at least partially disposed within the second chute 7.

[0048] The first damper 70 includes a first damper body 72 and a first damper drive device 74. The first damper body 72 is movably supported on the second chute 7. The first damper drive device 74 moves the first damper body 72 relative to the second chute 7. The first damper drive device 74 includes, for example, a hydraulic cylinder 74A and a hydraulic drive circuit 74B. The hydraulic cylinder 74A is connected to the first damper body 72. The hydraulic drive circuit 74B includes a hydraulic pump, a hydraulic valve, and the like. The first damper drive device 74 may be a device other than a hydraulic device. The first damper 70 may share the hydraulic drive circuit with the first supply pusher 50.

[0049] The second damper 80 has a second closed state and a second open state. In the second closed state, the second damper 80 isolates the upstream space from the downstream space of the second damper 80. In the second open state, the second damper 80 connects the upstream space to the downstream space of the second damper 80. The second damper 80 is attached to the second chute 7 and is at least partially disposed within the second chute 7.

[0050] The second damper 80 includes a second damper body 82 and a second damper drive device 84. The second damper body 82 is movably supported on the second chute 7. The second damper drive device 84 moves the second damper body 82 relative to the second chute 7. The second damper drive device 84 includes, for example, a hydraulic cylinder 84A and a hydraulic drive circuit 84B. The hydraulic cylinder 84A is connected to the second damper body 82. The hydraulic drive circuit 84B includes a hydraulic pump, a hydraulic valve, and the like. The second damper drive device 84 may be a device other than a hydraulic device. The second damper 80 may share the hydraulic drive circuit with at least one of the first supply pusher 50 and the first damper 70.

[0051] The first damper 70 and the second damper 80 form a double damper for maintaining the sealing performance of the combustion device 20, and also have the function of supplying the materials 4 to be treated downstream. For example, the first damper 70 is arranged so that the materials 4 discharged from the supply conveyor 30 are piled up on the first damper 70 in the first closed state. The first damper 70 discharges the materials 4 piled up on the first damper 70 downstream by switching from the first closed state to the first open state. The second damper 80 is arranged so that the materials 4 discharged from the first damper 70 are piled up on the second damper 80 in the second closed state. The second damper 80 discharges the materials 4 piled up on the second damper 80 downstream by switching from the second closed state to the second open state.

[0052] The adjustment device 40 includes a second supply pusher 90. The second supply pusher 90 is provided on the downstream supply path from the outlet 32B of the supply conveyor 30 to the inlet 20A of the combustion device 20, and supplies the materials 4 discharged from the supply conveyor 30 to the combustion device 20. In this embodiment, the second supply pusher 90 is provided below the second chute 7, and supplies the materials 4 discharged from the second damper 80 to the combustion device 20.

[0053] The second supply pusher 90 includes a second pusher body 92 and a second pusher drive device 94. The second pusher body 92 is movable between a forward end and a backward end. The second pusher drive device 94 moves the second pusher body 92 between the forward end and the backward end. The back-and-forth reciprocating motion of the second pusher body 92 pushes the workpiece 4 forward.

[0054] The second pusher drive device 94 includes, for example, a hydraulic cylinder 94A and a hydraulic drive circuit 94B. The hydraulic cylinder 94A is connected to the second pusher body 92. The hydraulic drive circuit 94B includes a hydraulic pump, a hydraulic valve, and the like. The second pusher drive device 94 may be a device other than a hydraulic device. The second supply pusher 90 may share the hydraulic drive circuit with at least one of the first supply pusher 50, the first damper 70, and the second damper 80.

[0055] The second supply pusher 90 includes a second pusher casing 96. The second pusher body 92 is movably provided within the second pusher casing 96. The hydraulic cylinder 94A is attached to the second pusher casing 96. The second pusher casing 96 is connected to the outlet 7B of the second chute 7 and to the inlet 20A of the combustion device 20. The second supply pusher 90 pushes the materials 4 that fall into the second pusher casing 96 from the second damper 80 via the second chute 7 toward the combustion device 20. The pushed materials 4 are supplied into the combustion device 20 and incinerated.

[0056] As shown in FIG. 1, the combustion device 20 includes a rotary kiln 22 and an incinerator 24. A second supply pusher 90 supplies the material 4 to be treated, which is discharged from a second damper 80, to the rotary kiln 22. The rotary kiln 22 supplies the material 4 to be treated, which is discharged from the second supply pusher 90, to the incinerator 24. The rotary kiln 22 is rotatably mounted relative to the incinerator 24 and is inclined downward from the second supply pusher 90 toward the incinerator 24. Therefore, the rotary kiln 22 supplies the material 4 to be treated, which is supplied from the second supply pusher 90, to the combustion device 20 while stirring it.

[0057] The incinerator 24 includes a furnace body 26 and a stoker 28. The furnace body 26 includes a combustion chamber 26A. The stoker 28 is provided within the combustion chamber 26A. The stoker 28 combusts the material to be treated by supplying air while stirring it. The combustion gas generated on the stoker 28 passes through the combustion chamber 26A, undergoes purification treatment in an exhaust gas treatment facility, and is discharged to the outside through a chimney. The stoker 28 includes, for example, a combustion stoker 28A and a post-combustion stoker 28B. The combustion stoker 28A and the post-combustion stoker 28B are each independently driven by a hydraulic device (not shown). In this embodiment, the combustion device 20 is a combustion device in which the rotary kiln 22 is combined with the stoker 28, but other types of combustion devices may also be used.

[0058] The rotary kiln 22 may be omitted from the combustion device 20. In this case, the material 4 to be treated is supplied from the second supply pusher 90 to the combustion device 20 directly or via a chute. By applying the adjustment device 40 to the kiln-type combustion device, the combustion state of the material 4 to be treated in the kiln-type combustion device can be stabilized.

[0059] 3, the adjustment device 40 includes an adjustment control unit 42. The adjustment control unit 42 controls the first supply pusher 50, the supply conveyor 30, the first damper 70, the second damper 80, and the second supply pusher 90. The adjustment control unit 42 is electrically connected to the first supply pusher 50, the supply conveyor 30, the first damper 70, the second damper 80, and the second supply pusher 90.

[0060] The adjustment control unit 42 includes, for example, a calculation device 42P and a storage device 42M. The calculation device 42P is electrically connected to the storage device 42M. The calculation device 42P includes, for example, at least one of a central processing unit (CPU), a micro processing unit (MPU), and a graphic processing unit (GPU). When performing image processing, it is preferable that a graphic processing unit (GPU) is installed. The storage device 42M includes, for example, at least one of a volatile memory and a non-volatile memory. Examples of the volatile memory include at least one of a random access memory (RAM) and a dynamic random access memory (DRAM). Examples of the non-volatile memory include at least one of a read-only memory (ROM) and an electrically erasable programmable ROM (EEPROM).

[0061] The adjustment control unit 42 is programmed to implement the control algorithm of the combustion equipment 2. The storage device 42M of the adjustment control unit 42 stores software such as a program for implementing the control algorithm of the combustion equipment 2. The arithmetic device 42P implements the control algorithm of the processing device by reading and executing the program stored in the storage device 42M. In other words, the various functions of the combustion equipment 2 are implemented by software and hardware working together. For example, the adjustment control unit 42 includes a PLC (Programmable Logic Controller).

[0062] The configuration of the adjustment control unit 42 is not limited to the arithmetic device 42P and the storage device 42M. The configurations of the arithmetic device 42P and the storage device 42M are not limited to the configurations described above. The configuration of the adjustment control unit 42 can be realized by hardware alone or a combination of hardware and software. Furthermore, the arithmetic device 42P and the storage device 42M may be configured on a single chip such as an ASIC (Application Specific Integrated Circuit) or FPGA (Field Programmable Gate Array).

[0063] 2, the adjustment control unit 42 controls the first supply pusher 50 so that the upstream supply amount of the workpieces 4 per unit time on the upstream supply path does not exceed a predetermined amount. The adjustment control unit 42 controls the first supply pusher 50 so as to reduce fluctuations in the supply amount of the workpieces 4 per unit time on the upstream supply path.

[0064] The adjustment control unit 42 controls the first pusher drive device 54 to adjust the amount of workpieces 4 supplied from the first supply pusher 50 to the supply conveyor 30. For example, the adjustment control unit 42 controls the first pusher drive device 54 so that the first pusher body 52 repeats an operation of moving forward for a first drive time and stopping for a first stop time as it moves from the rear end to the forward end. The adjustment control unit 42 controls the first pusher drive device 54 so that when the first pusher body 52 reaches the forward end, the first pusher body 52 moves from the forward end to the rear end. At this time, the first pusher body 52 does not stop midway.

[0065] Compared to when the objects 4 are directly supplied from the receiving hopper 10 to the supply conveyor 30, the fluctuation in the supply amount per unit time (upstream supply amount) of the objects 4 supplied from the first supply pusher 50 to the supply conveyor 30 can be reduced. This reduces the variation in the objects 4 on the supply conveyor 30.

[0066] The adjustment control unit 42 may control the first pusher drive device 54 so that the first pusher body 52 does not stop midway as it moves from the rearward end to the forward end. In this case, for example, the first pusher drive device 54 is equipped with a mechanism that can change the movement speed of the first pusher body 52, and the adjustment control unit 42 changes the movement speed of the first pusher body 52 via the first pusher drive device 54 to adjust the supply amount of the workpieces 4. Also, both the inching operation using the first drive time and the first stop time and speed change may be used. At least one of the first drive time and the first stop time may be changeable.

[0067] 2, the adjustment control unit 42 controls the supply conveyor 30, the first damper 70, the second damper 80, and the second supply pusher 90 so that the downstream supply amount of the workpieces 4 per unit time on the downstream supply path does not exceed a predetermined amount. The adjustment control unit 42 controls at least one of the supply conveyor 30, the first damper 70, the second damper 80, and the second supply pusher 90 so as to reduce fluctuations in the supply amount of the workpieces 4 per unit time on the downstream supply path.

[0068] The adjustment control unit 42 controls the supply conveyor 30 so that the amount of materials 4 supplied from the supply conveyor 30 to the first damper 70 per unit time does not exceed a predetermined amount. For example, when the first damper 70 is in the first closed state, the adjustment control unit 42 controls the supply conveyor 30 to drive the supply conveyor 30 for a second drive time and stop the supply conveyor 30 for a second stop time, repeating this operation. The adjustment control unit 42 controls the supply conveyor 30 so that the supply conveyor 30 operates for a standard operation time and stops operation of the supply conveyor 30 after the standard operation time has elapsed. Furthermore, as will be described later, the adjustment control unit 42 stops operation of the supply conveyor 30 depending on the pile state of the materials on the first damper 70.

[0069] At least one of the first drive time and the first stop time may be changeable. Also, instead of the inching operation using the second drive time and the second stop time, the conveying speed of the supply conveyor 30 may be variable, or both the inching operation and the speed change may be used.

[0070] The adjustment control unit 42 controls the first damper 70 so that the first damper 70 repeatedly opens and closes. For example, the adjustment control unit 42 controls the first damper 70 so that the first closed state is maintained for a first closed time and the first open state is maintained for a first open time. The adjustment control unit 42 opens and closes the first damper 70 when the operation of the supply conveyor 30 is stopped.

[0071] The adjustment control unit 42 controls the second damper 80 so that the second damper 80 repeatedly opens and closes. For example, the adjustment control unit 42 controls the second damper 80 so that the second closed state is maintained for a second closed time and the second open state is maintained for a second open time. The adjustment control unit 42 opens and closes the second damper 80 after the first damper 70 has been opened and closed.

[0072] The adjustment control unit 42 controls the second pusher drive device 94 so that the second pusher body 92 moves from the rear end to the forward end and then from the forward end to the rear end. After the second damper 80 has been opened and closed, the adjustment control unit 42 causes the second supply pusher 90 to make one reciprocating motion.

[0073] Unlike the first supply pusher 50, the second supply pusher 90 does not perform an inching operation, but the second supply pusher 90 may perform an inching operation. Also, the movement speed of the second pusher body 92 of the second supply pusher 90 may be made variable. Also, both the inching operation and speed change may be used.

[0074] The adjustment control unit 42 controls the first damper 70, the second damper 80, and the second supply pusher 90 to operate in conjunction with each other. For example, the adjustment control unit 42 opens and closes the second damper 80 after a first waiting time has elapsed since the first damper 70 was opened and closed. The adjustment control unit 42 causes the second pusher body 92 to make one reciprocation after a second waiting time has elapsed since the second damper 80 was opened and closed. The adjustment control unit 42 opens and closes the first damper 70 after a third waiting time has elapsed since the second pusher body 92 completed one reciprocation. As a result, the workpieces 4 accumulated on the first damper 70 are supplied to the combustion device 20.

[0075] 2, the adjustment device 40 includes a first sensor 44. The first sensor 44 detects the accumulation state of the materials 4 in the downstream supply path from the outlet of the supply conveyor 30 to the inlet of the combustion device 20. The adjustment device 40 adjusts the downstream supply amount of the materials 4 per unit time on the downstream supply path based on the accumulation state detected by the first sensor 44 so that it does not exceed a predetermined amount. The first sensor 44 is electrically connected to the adjustment control unit 42.

[0076] In this embodiment, the first sensor 44 includes a non-contact sensor. Examples of non-contact sensors include microwave sensors, ultrasonic sensors, and laser sensors. In this embodiment, an analog sensor is used as the first sensor 44, but the first sensor 44 may also be a digital sensor switch. By using a non-contact sensor as the first sensor 44, the first sensor 44 can be installed at a location away from the workpiece 4, thereby increasing the flexibility of where the first sensor 44 is installed and reducing the influence of the properties of the workpiece 4 on the detection by the first sensor 44. This stabilizes the operation of the adjustment device 40 and more reliably stabilizes the combustion state of the workpiece 4 in the combustion device 20. However, the non-contact sensor is not limited to the above example. The first sensor 44 may also be a contact sensor. The first sensor 44 is attached to the conveyor casing 32, but may also be attached to another component (e.g., the second chute 7).

[0077] The adjustment control unit 42 controls the supply conveyor 30 based on the accumulation state detected by the first sensor 44. For example, the adjustment control unit 42 continues operation of the supply conveyor 30 until the accumulation state detected by the first sensor 44 reaches a first reference state. The adjustment control unit 42 stops operation of the supply conveyor 30 when the accumulation state detected by the first sensor 44 reaches the first reference state. After stopping operation of the supply conveyor 30, the adjustment control unit 42 resumes operation of the supply conveyor 30 when the accumulation state detected by the first sensor 44 has not reached the first reference state.

[0078] For example, the adjustment control unit 42 continues the inching operation of the supply conveyor 30 until the accumulation state detected by the first sensor 44 reaches a first reference state. The adjustment control unit 42 stops the inching operation of the supply conveyor 30 when the accumulation state detected by the first sensor 44 reaches the first reference state. After the operation of the supply conveyor 30 is stopped, the adjustment control unit 42 resumes the inching operation of the supply conveyor 30 when the accumulation state detected by the first sensor 44 has not reached the first reference state.

[0079] In this embodiment, the first sensor 44 detects a first distance DS1 from the first sensor 44 to the workpieces 4 on the first damper 70 as the accumulation state. The adjustment control unit 42 continues operation of the supply conveyor 30 when the first distance DS1 is longer than a first reference distance. The adjustment control unit 42 stops operation of the supply conveyor 30 when the first distance DS1 is equal to or shorter than the first reference distance. After stopping operation of the supply conveyor 30, the adjustment control unit 42 resumes operation of the supply conveyor 30 when the first distance DS1 is longer than the first reference distance with the first damper 70 in the first closed state. This makes it possible to suppress or prevent the amount of workpieces 4 on the first damper 70 from exceeding a predetermined amount.

[0080] The adjustment control unit 42 controls the first damper 70 so that the first damper 70 repeatedly opens and closes regardless of the accumulation state detected by the first sensor 44. The adjustment control unit 42 controls the first damper 70 so that the first damper 70 repeatedly opens and closes regardless of the first distance DS1 detected by the first sensor 44. This reduces fluctuations in the supply amount of the material 4 to be treated that is supplied to the combustion device 20 by the first damper 70, the second damper 80, and the second supply pusher 90.

[0081] As shown in FIG. 2, the adjustment device 40 includes a second sensor 46. The second sensor 46 detects the accumulation state of the workpieces 4 on the upstream supply path. For example, the second sensor 46 detects the accumulation state of the workpieces 4 near the outlet of the first supply pusher 50. The adjustment device 40 adjusts the upstream supply amount of the workpieces 4 on the upstream supply path per unit time based on the accumulation state detected by the second sensor 46 so that it does not exceed a predetermined amount. The second sensor 46 is electrically connected to the adjustment control unit 42.

[0082] In this embodiment, the second sensor 46 includes a non-contact sensor. Examples of non-contact sensors include a microwave sensor, an ultrasonic sensor, and a laser sensor. In this embodiment, an analog sensor is used for the second sensor 46, but the second sensor 46 may also be a digital sensor switch. By using a non-contact sensor for the second sensor 46, the second sensor 46 can be installed at a location away from the workpiece 4, thereby increasing the flexibility in the installation location of the second sensor 46 and reducing the influence of the properties of the workpiece 4 on the detection by the second sensor 46. This stabilizes the operation of the adjustment device 40 and more reliably stabilizes the combustion state of the workpiece 4 in the combustion device 20. However, the non-contact sensor is not limited to the above example. The second sensor 46 may also be a contact sensor. The second sensor 46 is attached to the first chute 6, but may also be attached to another component (e.g., the first pusher casing 56). The second sensor 46 may be omitted from the adjustment device 40.

[0083] The adjustment control unit 42 controls the first supply pusher 50 based on the accumulation state detected by the second sensor 46. For example, the adjustment control unit 42 continues the operation of the first supply pusher 50 until the accumulation state detected by the second sensor 46 reaches a second reference state. The adjustment control unit 42 stops the operation of the first supply pusher 50 when the accumulation state detected by the second sensor 46 reaches the second reference state. After the operation of the first supply pusher 50 is stopped, the adjustment control unit 42 resumes the operation of the first supply pusher 50 when the accumulation state detected by the second sensor 46 has not reached the second reference state.

[0084] For example, the adjustment control unit 42 continues the inching operation of the first supply pusher 50 until the accumulation state detected by the second sensor 46 reaches the second reference state. The adjustment control unit 42 stops the inching operation of the first supply pusher 50 when the accumulation state detected by the second sensor 46 reaches the second reference state. After the operation of the first supply pusher 50 is stopped, the adjustment control unit 42 resumes the inching operation of the first supply pusher 50 when the accumulation state detected by the second sensor 46 has not reached the second reference state.

[0085] In this embodiment, the second sensor 46 detects a second distance DS2 from the second sensor 46 to the workpieces 4 located near the outlet of the first supply pusher 50 as the accumulation state. The adjustment control unit 42 continues operation of the first supply pusher 50 when the second distance DS2 is longer than the second reference distance. The adjustment control unit 42 stops operation of the first supply pusher 50 when the second distance DS2 is equal to or shorter than the second reference distance. After stopping operation of the first supply pusher 50, the adjustment control unit 42 resumes operation of the first supply pusher 50 when the second distance DS2 is longer than the second reference distance. This makes it possible to suppress or prevent the amount of workpieces 4 supplied to the supply conveyor 30 from exceeding a predetermined amount.

[0086] The adjustment control unit 42 controls the operation and stopping of the supply conveyor 30 regardless of the accumulation state detected by the second sensor 46. The adjustment control unit 42 controls the operation and stopping of the supply conveyor 30 regardless of the second distance DS2 detected by the second sensor 46. Note that the second sensor 46 may be omitted from the combustion equipment 2.

[0087] The operation of the combustion equipment 2 will be described with reference to FIGS.

[0088] As shown in Figure 2, in the initial state, the materials to be processed 4 are placed in the receiving hopper 10. The first pusher body 52 of the first supply pusher 50 is positioned at the rear end. The first damper 70 is in the first closed state. The second damper 80 is in the second closed state. The second pusher body 92 of the second supply pusher 90 is positioned at the rear end.

[0089] As shown in Fig. 4, in step S1, the adjustment control unit 42 starts the operation of the supply conveyor 30. As described above, the supply conveyor 30 performs an inching operation. After the supply conveyor 30 starts operating, the control of the first damper 70, the second damper 80, and the second supply pusher 90 shown in Fig. 4 (steps S2 to S11) and the control of the first supply pusher 50 shown in Fig. 5 (steps S21 to S25) are executed in parallel.

[0090] In step S2 shown in FIG. 4, the adjustment control unit 42 determines whether the first distance DS1 detected by the first sensor 44 is equal to or shorter than the first reference distance. That is, the adjustment control unit 42 determines whether the pile state of the workpieces 4 on the first damper 70 has reached the first reference state. If it is determined that the first distance DS1 is longer than the first reference distance, the adjustment control unit 42 determines in step S3 whether a reference operating time has elapsed since the start of the supply conveyor 30. If it is determined in step S3 that the reference operating time has not elapsed, the process returns to step S2. On the other hand, if it is determined in step S3 that the reference operating time has elapsed, the adjustment control unit 42 stops the operation of the supply conveyor 30 in step S4. Similarly, if it is determined in step S2 that the first distance DS1 is equal to or shorter than the first reference distance, the adjustment control unit 42 stops the operation of the supply conveyor 30 in step S4.

[0091] In step S5, the adjustment control unit 42 determines whether the operation of the supply conveyor 30 has been stopped. If it is determined that the supply conveyor 30 is in operation, step S5 is repeated. On the other hand, if it is determined that the supply conveyor 30 is not in operation, the adjustment control unit 42 executes the opening and closing operations of the first damper 70 in steps S6 and S7. At this time, the workpieces 4 on the first damper 70 fall onto the second damper 80.

[0092] After the first damper 70 has been opened and closed, in steps S8 and S9, the adjustment control unit 42 opens and closes the second damper 80. At this time, the workpieces 4 on the second damper 80 are discharged to the second supply pusher 90.

[0093] After the second damper 80 has been opened and closed, in steps S10 and S11, the second pusher body 92 of the second supply pusher 90 advances from the rearward end to the forward end and retreats from the forward end to the rearward end under the control of the adjustment control unit 42. As a result, the materials 4 discharged from the second damper 80 are supplied to the combustion device 20. After step S11 is performed, the process returns to step S5, and after the supply conveyor 30 stops operating, the first damper 70 is opened and closed, the second damper 80 is opened and closed, and the second supply pusher 90 makes one reciprocating movement. Note that step S5 may be performed after a predetermined time has elapsed after step S11 is performed. This predetermined time may also be changeable by the user.

[0094] After the first damper 70 has been opened and closed in steps S6 and S7, the adjustment control unit 42 starts the operation of the supply conveyor 30 in step S1, and steps S2 to S4 are executed. That is, after the first damper 70 has been opened and closed, the supply conveyor 30 starts to operate, and when the supply conveyor 30 stops operating, the first damper 70 is opened and closed, the second damper 80 is opened and closed, and the second supply pusher 90 makes one reciprocating motion.

[0095] 4 and 5, when the operation of the supply conveyor 30 is started in step S1, the adjustment control unit 42 determines whether the operation of the supply conveyor 30 is stopped in step S21 shown in Fig. 5. If it is determined that the supply conveyor 30 is stopped, step S21 is repeated. On the other hand, if it is determined that the supply conveyor 30 is operating, the adjustment control unit 42 starts the operation of the first supply pusher 50 in step S22.

[0096] After the first supply pusher 50 starts operating, in step S23, the adjustment control unit 42 determines whether the operation of the supply conveyor 30 has been stopped. If it is determined that the supply conveyor 30 is stopped, in step S25, the adjustment control unit 42 stops the operation of the second supply pusher 90. If it is determined in step S23 that the supply conveyor 30 is operating, in step S22, the adjustment control unit 42 determines whether the second distance DS2 is equal to or less than the second reference distance. If the second distance DS2 is equal to or less than the second reference distance, it can be determined that the pile state of the workpieces 4 has reached the second reference state. Therefore, even if the supply conveyor 30 is operating, the adjustment control unit 42 stops the operation of the first supply pusher 50, and the process returns to step S21. In this way, when the supply conveyor 30 is stopped, the operation of the first supply pusher 50 is also stopped, and even if the supply conveyor 30 is in operation, if the pile state of the workpieces 4 downstream of the first supply pusher 50 has reached the second reference state, the operation of the first supply pusher 50 is stopped. Therefore, the variation in the workpieces 4 on the supply conveyor 30 is reduced.

[0097] In this application, the term "comprises" and its derivatives are open-ended terms that describe the presence of elements and do not exclude the presence of other elements not listed. This also applies to the terms "have," "include," and their derivatives.

[0098] In this application, ordinal numbers such as "first" and "second" are merely terms for identifying components and do not have any other meaning (e.g., a particular order). For example, the presence of a "first element" does not imply the presence of a "second element," and the presence of a "second element" does not imply the presence of a "first element."

[0099] In addition, the expression "at least one of A and B" in the present disclosure encompasses, for example, (1) only A, (2) only B, and (3) both A and B. In the present disclosure, the expression "at least one of A and B" is not to be interpreted as "at least one of A and at least one of B."

[0100] It is apparent that various changes and modifications of the present invention are possible in light of the above disclosure, and therefore, the present invention may be practiced otherwise than as specifically disclosed herein without departing from the spirit of the present invention. [Explanation of symbols]

[0101] 2: Combustion equipment 4: Processing object 5: Crane 6: First shot 6A: Entrance 7: Second shot 7B:Exit 10: Receiving hopper 10A:Exit 20: Combustion equipment 20A: Entrance 20S:Internal space 22: Rotary kiln 24: Incinerator 26: Furnace body 26A: Combustion chamber 28: Stalker 28A: Combustion stoker 28B: Post-combustion stoker 30: Supply conveyor 32: Conveyor casing 32A: Entrance 32B:Exit 32S: Internal space 34: Conveyor body 36: Transport member 38: Drive motor 40: Adjustment device 42: Adjustment control section 42M: Storage device 42P: Arithmetic device 44: First sensor 46: Second sensor 50: First supply pusher 52: First pusher body 54: First pusher drive device 54A: Hydraulic cylinder 54B: Hydraulic drive circuit 56: First pusher casing 70: First damper 72: First damper body 74: First damper drive unit 74A: Hydraulic cylinder 74B: Hydraulic drive circuit 80: Second damper 82: Second damper body 84: Second damper drive unit 84A: Hydraulic cylinder 84B: Hydraulic drive circuit 90: Second supply pusher 92: Second pusher body 94: Second pusher drive device 94A: Hydraulic cylinder 94B: Hydraulic drive circuit 96: Second pusher casing DS1: First distance DS2: Second distance

Claims

1. a receiving hopper for receiving the material to be processed; a combustion device for incinerating the material to be treated; a supply conveyor that is provided on a supply path from the receiving hopper to the combustion device and that conveys the material to be treated; an adjusting device that adjusts the supply amount of the workpieces on at least one of the upstream side and downstream side of the supply conveyor; a first chute; the adjusting device includes a first supply pusher that is provided on an upstream supply path from an outlet of the receiving hopper to an inlet of the supply conveyor and that supplies the material to be processed from the receiving hopper to the supply conveyor; the first supply pusher is provided above the supply conveyor, the first chute connects the outlet of the first supply pusher and the inlet of the supply conveyor, and is provided at a position horizontally offset from the outlet of the receiving hopper; Combustion equipment.

2. the adjusting device adjusts the amount of the workpieces supplied per unit time on at least one of the upstream side and the downstream side of the supply conveyor so that it does not exceed a predetermined amount. The combustion facility according to claim 1.

3. A receiving hopper for receiving the material to be processed; a combustion device for incinerating the material to be treated; a supply conveyor that is provided on a supply path from the receiving hopper to the combustion device and that conveys the material to be treated; an adjusting device that adjusts the supply amount of the workpieces on at least one of the upstream side and downstream side of the supply conveyor, the adjusting device includes a first sensor that detects a deposition state of the material to be treated in a downstream supply path from an outlet of the supply conveyor to an inlet of the combustion device; the adjusting device adjusts the downstream supply amount of the workpiece per unit time on the downstream supply path based on the accumulation state detected by the first sensor so that it does not exceed a predetermined amount. Combustion equipment.

4. the adjusting device includes an adjustment control unit that controls the supply conveyor based on the accumulation state detected by the first sensor. The combustion facility according to claim 3.

5. the adjustment control unit continues operation of the supply conveyor until the accumulation state detected by the first sensor reaches a first reference state; the adjustment control unit stops operation of the supply conveyor when the accumulation state detected by the first sensor reaches the first reference state; the adjustment control unit resumes operation of the supply conveyor when the accumulation state detected by the first sensor has not reached the first reference state after the operation of the supply conveyor has been stopped. The combustion facility according to claim 4.

6. the adjusting device includes a first damper that opens and closes the downstream supply path; the first damper has a first closed state and a first open state; the first damper is disposed so that the objects to be processed discharged from the supply conveyor are piled up on the first damper in the first closed state; When the first damper is changed from the first closed state to the first open state, the material to be treated that has accumulated on the first damper is discharged downstream, the first sensor detects the accumulation state of the object to be treated on the first damper in the first closed state. The combustion facility according to claim 3.

7. the first sensor detects a first distance from the first sensor to the object to be treated on the first damper as the accumulation state; The combustion facility according to claim 6.

8. The adjustment device includes an adjustment control unit that controls the supply conveyor based on the accumulation state detected by the first sensor, the adjustment control unit continues operation of the supply conveyor when the first distance is longer than a first reference distance; the adjustment control unit stops operation of the supply conveyor when the first distance is equal to or less than the first reference distance; the adjustment control unit resumes operation of the supply conveyor when the first distance is longer than the first reference distance with the first damper in the first closed state after the operation of the supply conveyor is stopped. The combustion facility according to claim 7.

9. the adjusting device includes an adjustment control unit that controls the first supply pusher so that an upstream supply amount of the workpiece per unit time on the upstream supply path does not exceed a predetermined amount. The combustion facility according to claim 1.

10. The first supply pusher includes: a first pusher body movable between a forward end and a rearward end; a first pusher drive device that moves the first pusher body between the forward end and the rearward end, the adjustment control unit controls the first pusher drive device to adjust the amount of the workpieces supplied from the first supply pusher to the supply conveyor. The combustion facility according to claim 9.

11. A receiving hopper for receiving the material to be treated; a combustion device for incinerating the material to be treated; a supply conveyor that is provided on a supply path from the receiving hopper to the combustion device and that conveys the material to be treated; an adjusting device that adjusts the supply amount of the workpieces on at least one of the upstream side and downstream side of the supply conveyor, The adjustment device is a first supply pusher provided on an upstream supply path from an outlet of the receiving hopper to an inlet of the supply conveyor, the first supply pusher supplying the material to be processed from the receiving hopper to the supply conveyor; an adjustment control unit that controls the first supply pusher so that an upstream supply amount of the workpiece per unit time on the upstream supply path does not exceed a predetermined amount, The first supply pusher includes: a first pusher body movable between a forward end and a rearward end; a first pusher drive device that moves the first pusher body between the forward end and the rearward end, the adjustment control unit controls the first pusher drive device to adjust the amount of the workpieces supplied from the first supply pusher to the supply conveyor; the adjustment control unit controls the first pusher drive device so that the first pusher body repeats an operation of moving forward for a first drive time and stopping for a first stop time when moving from the rearward end to the forward end. Combustion equipment.

12. A receiving hopper for receiving the material to be treated; a combustion device for incinerating the material to be treated; a supply conveyor that is provided on a supply path from the receiving hopper to the combustion device and that conveys the material to be treated; an adjusting device that adjusts the supply amount of the workpieces on at least one of the upstream side and downstream side of the supply conveyor, The adjustment device is a first supply pusher provided on an upstream supply path from an outlet of the receiving hopper to an inlet of the supply conveyor, the first supply pusher supplying the material to be processed from the receiving hopper to the supply conveyor; an adjustment control unit that controls the first supply pusher so that an upstream supply amount of the workpiece per unit time on the upstream supply path does not exceed a predetermined amount, the adjustment device includes a second supply pusher; the second supply pusher is provided on a downstream supply path from an outlet of the supply conveyor to an inlet of the combustion device, and supplies the material to be treated discharged from the supply conveyor to the combustion device. Combustion equipment.

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