JP6417617B1 - Ash extrusion equipment - Google Patents

Abstract

An operation of an ash extrusion apparatus is facilitated at low cost.
An ash inlet, an ash cooling tank having an inclined surface and filled with a liquid, a scraper for extruding ash, a drive unit for driving the scraper, and an ash discharge port. A first communication part 7 formed in a downward slope from the ash cooling tank 3, a float tank 8 connected to the other end 7 b of the first communication part 7, and a liquid for measuring the liquid level of the float tank 8 A level indicator 24, a first liquid supply device 27 for supplying liquid to the discharge port, a second liquid supply device 34 for supplying liquid to the ash cooling tank 3, information on the level indicator 24, and the drive unit 5 And a control device 9 that controls the first liquid supply device 27 and the second liquid supply device 34 based on the information on the torque, and the control device 9 has a predetermined liquid level when the liquid level decreases. When the liquid is supplied until the torque exceeds a predetermined value, the liquid is supplied to the vicinity of the discharge port 6 Providing ash extrusion apparatus 1 that.
[Selection] Figure 1

Description

  The present invention relates to an ash extrusion apparatus.

In a garbage incinerator, for example, a stoker furnace, main ash generated by burning garbage in a grate is dropped from an ash chute to an ash extrusion device and cooled with a liquid (for example, water) in the ash extrusion device. . This liquid also has the function of preventing air from entering the stalker furnace from the ash extruder.
In the ash extrusion device, when the scraper is driven to push out the ash, the liquid is discharged together with the ash from the discharge port. Accordingly, in order to keep the liquid level in the apparatus at a predetermined liquid level, it is necessary to supply a liquid such as water into the apparatus. Patent Document 1 discloses an ash extrusion apparatus that includes a mechanism for circulating the liquid in the ash extrusion apparatus and can reduce the amount of liquid to be newly supplied.

JP-A-8-261438 JP-A-8-5049

By the way, in the ash extrusion apparatus disclosed in Patent Document 1, the ash that has entered the scraper drive unit side during the retracting movement of the scraper, called return ash, has an adverse effect on the scraper and the drive unit that drives the scraper. There is a problem of affecting.
Also, in recent years, as the ash has been refined due to the progress of waste separation, the ash near the discharge port (where the ash is drained) has solidified, and the ash discharge capacity has been reduced. There is a problem that it is difficult to continue driving.
Patent Document 2 describes a technique for removing ash near the discharge port with a cutter in order to enable continuous operation of the ash extrusion apparatus. However, in the technique described in Patent Document 2, it is necessary to separately arrange a special mechanism such as a cutter, which increases costs.

  An object of the present invention is to provide an ash extrusion apparatus that can easily continue the operation of the ash extrusion apparatus at low cost.

According to the first aspect of the present invention, the ash extrusion apparatus includes an ash inlet into which ash incinerated in a waste incinerator is introduced, and an inclined surface that is connected to the lower side of the ash inlet and has an upstream slope on the downstream side. An ash cooling tank filled with a liquid above the lower end of the ash inlet, a scraper that pushes the ash introduced into the ash cooling tank to the downstream side, and the scraper can be advanced and retracted A drive unit that is driven by the scraper, a discharge port that is connected to the inclined surface and from which the ash pushed out by the scraper is discharged, and is opposite to the discharge port as viewed from the scraper, with one end being the ash cooling unit A tank connected to a lower side of the liquid surface of the liquid and formed in a downward slope from the ash cooling tank; a float tank connected to the other end of the first communication part; and the float A liquid level gauge for measuring the liquid level in the tank, and the liquid A first liquid supply device for supplying liquid to the vicinity of the discharge port, a second liquid supply device for supplying the liquid to the ash cooling tank, information on the liquid level gauge, and information on the torque of the drive unit Based on the first liquid supply device and the second liquid supply device, the other end of the first communication portion is lower than the one end, the control device, Based on the information of the liquid level meter, when the liquid level falls from a predetermined liquid level, the liquid is supplied to the predetermined liquid level by controlling the second liquid supply device, and information on the torque On the basis of the above, when the torque becomes a predetermined value or more, the first liquid supply device is controlled to supply the liquid to the vicinity of the discharge port.

According to such a configuration, the return ash accumulated in the ash cooling tank is discharged to the float tank via the first communication part, so that adverse effects of the return ash on the drive unit can be reduced.
Further, when the torque of the drive unit becomes a predetermined value or more, that is, when the ash is solidified and the ash is difficult to be discharged, the liquid is supplied to the ash near the discharge port, so that the solidified ash Is softened.
With the above effects, it is possible to easily continue the operation of the ash extrusion apparatus at a low cost without separately arranging a special mechanism such as a cutter.

In the ash extruder, the first liquid supply device is arranged above the outlet, and the circulating fluid injection nozzle for spraying the liquid in the liquid removing regions of the ash cooling bath, the liquid in the float tank And a circulation pump that circulates the circulating fluid through the circulating fluid injection nozzle.

  According to such a configuration, the ash can be efficiently softened by spraying the liquid to the liquid draining region where the solidified ash is easily deposited.

  In the ash extrusion device, the scraper may include a scraper main body that pushes out the ash, and an auxiliary scraper that is connected to the scraper main body and guides the returned ash out of the ash to the first continuous portion. .

  According to such a structure, the return ash which has a bad influence on a scraper and a drive part can be discharged | emitted actively.

  The ash extrusion apparatus may further include an openable / closable opening lid provided above the float tank, and the inside of the float tank may be cleaned by opening the opening lid.

  According to such a configuration, it is possible to easily clean the inside of the first series passage and the float tank by opening the opening lid.

  The said ash extrusion apparatus WHEREIN: The said 1st communicating part is a pipe | tube which connects the said ash cooling tank and the said float tank, The said ash cooling tank and the said float tank may be connected only by the said pipe | tube.

  According to such a configuration, the liquid level of the ash cooling tank and the liquid level of the float tank are physically separated because the ash cooling tank and the float tank communicate with each other only through the first communication section. The As a result, scum (floating ash) drifting near the liquid surface of the ash cooling tank is unlikely to enter the float tank. For this reason, the risk that the liquid level measurement is obstructed due to the liquid level gauge becoming dirty is reduced.

  The ash extrusion device may further include a second communication portion formed so that the liquid level of the ash cooling tank and the liquid level of the float tank are made continuous.

  According to such a configuration, since the liquid level of the ash cooling tank and the liquid level of the float tank are not physically separated, scum drifting on the liquid level of the ash cooling tank enters the float tank. The scum can be removed safely and easily while the operation is continued.

According to the present invention, since the return ash accumulated in the ash cooling tank is discharged to the float tank via the first communication part, it is possible to reduce the adverse effect of the return ash on the drive unit.
Further, when the torque of the drive unit becomes a predetermined value or more, that is, when the ash is solidified and the ash is difficult to be discharged, the liquid is supplied to the ash near the discharge port, so that the solidified ash Is softened.
With the above effects, it is possible to easily continue the operation of the ash extrusion apparatus at a low cost without separately arranging a special mechanism such as a cutter.

It is sectional drawing of the ash extrusion apparatus of embodiment of this invention. It is II arrow directional view of FIG. 1, and is a front view of the discharge port of embodiment of this invention. It is sectional drawing of the ash cooling tank and float tank of the modification of embodiment of this invention. It is sectional drawing of the ash cooling tank of the modification of embodiment of this invention.

Hereinafter, an ash extrusion device according to an embodiment of the present invention will be described in detail with reference to the drawings.
The ash extrusion apparatus is provided in a waste incinerator (for example, a stoker furnace) that incinerates garbage. Specifically, the ash extrusion device is a device that cools ash produced by incineration of garbage in a garbage incinerator and then discharges the ash to a conveyor, for example.

  As shown in FIG. 1, the ash extrusion apparatus 1 of the present embodiment is introduced into an ash inlet 2 into which ash A1 is introduced, an ash cooling tank 3 connected to the ash inlet 2, and an ash cooling tank 3. The scraper 4 that pushes out the ash A2, the drive unit 5 that drives the scraper 4 so as to be able to advance and retreat, the discharge port 6 that discharges the ash A2 pushed out by the scraper 4, and one end 7a are connected to the ash cooling tank 3. A communication pipe 7 (first communication part), a float tank 8 connected to the other end 7 b of the communication pipe 7, and a control device 9 are provided.

The ash inlet 2 is a rectangular tube that is connected to the ash chute of the waste incinerator and extends along the vertical direction. The shape of the ash inlet 2 is not limited to this.
The ash cooling tank 3 is a tank connected to the lower side of the ash inlet 2 and is a tank for cooling the ash A2 introduced through the ash inlet 2.
The ash cooling tank 3 is filled with a liquid (for example, water). The height of the liquid level W of the liquid can be appropriately set according to the shape of the ash cooling tank 3. The height of the liquid surface W of the present embodiment is set to be higher than the lower end 2a of the ash introduction port 2. The height of the liquid level W is adjusted by the control device 9.

The bottom surface 10 of the ash cooling tank 3 is formed so that the position directly below the ash inlet 2 is the lowest.
The bottom surface 10 of the ash cooling tank 3 has a first inclined surface 11 that is formed so as to gradually increase from directly below the ash inlet 2 toward the first direction D1 in the horizontal direction. Here, the first direction D1 is a direction toward the discharge direction (downstream side) of the ash A2. That is, the first inclined surface 11 is formed so as to be inclined upward in the ash A discharge direction (downstream side).

The discharge port 6 is connected to the first inclined surface 11 and is a rectangular opening through which the ash A2 pushed out by the scraper 4 is discharged. The discharge port 6 is formed such that the lower end 6a of the discharge port 6 is higher than the liquid level W of the liquid. A liquid drain region R is provided between the lower end 6a of the discharge port 6 and the liquid. The liquid draining region R is an upper part of the first inclined surface 11 and is higher than the liquid level W of the liquid. The ash A2a deposited in the liquid draining region R is not immersed in the liquid.
A conveyor C is disposed below the discharge port 6. The conveyor C carries out the ash A2 discharged from the discharge port 6 to a subsequent apparatus.

  The bottom surface 10 of the ash cooling tank 3 has a second inclined surface 12 formed so as to gradually increase from directly below the ash inlet 2 toward the second direction D2 opposite to the first direction D1. Yes. A mechanism for pushing out the ash A2 such as the scraper 4 and the drive unit 5 is disposed above the second inclined surface 12.

  The scraper 4 is a device that is arranged on the second direction D2 side with respect to the ash inlet 2 and pushes out the ash A2 stored in the ash cooling tank 3. The scraper 4 is connected to a first central axis S1 orthogonal to the first direction D1 and extending in the horizontal direction. The scraper 4 is pivoted about the second central axis S2 at a pivot arm 14 pivotable about the first central axis S1 and an end of the pivot arm 14 opposite to the first central axis S1. And a scraper body 15 that is movably connected.

The scraper body 15 is arranged so that the tip thereof is in contact with the bottom surface 10 of the ash cooling tank 3 in the width direction WD (horizontal direction orthogonal to the first direction D1, see FIG. 2). When the rotating arm 14 rotates in the first rotation direction R1, the scraper body 15 pushes the ash A2 downstream. When the turning arm 14 is turned in the second rotation direction R2 opposite to the first rotation direction R1, the tip of the scraper body 15 is retreated in the second direction D2.
As shown by the solid line in FIG. 1, the scraper main body 15 is in the most retracted state, and the tip of the scraper main body 15 is located directly below the ash inlet 2. As shown by a two-dot chain line in FIG. 1, the scraper main body 15 is in the most advanced state, and the tip of the scraper main body 15 is positioned downstream of the ash inlet 2 directly below.

The scraper 4 has an auxiliary scraper 16 that is swingably connected to the scraper body 15. The auxiliary scraper 16 is connected to the scraper main body 15 via the third central axis S3. The third central axis S3 is disposed near the second central axis S2 of the scraper body 15. The tip of the auxiliary scraper 16 is in contact with the second inclined surface 12 of the bottom surface 10 of the ash cooling tank 3 over the width direction WD.
The auxiliary scraper 16 moves on the bottom surface 10 as the scraper body 15 moves.

  The drive unit 5 is, for example, an electric motor. The drive unit 5 rotates the first central axis S1 in the first rotation direction R1 or in the second rotation direction R2. The drive unit 5 and the control device 9 are electrically connected. Information relating to the torque of the drive unit 5 is input to the control device 9. The torque of the drive unit 5 increases as the load on the scraper 4 driven by the drive unit 5 increases.

  The communication pipe 7 is formed such that one end 7a, which is a connection portion with the ash cooling tank 3, is connected to the second inclined surface 12 of the bottom surface 10 of the ash cooling tank 3, and the other end 7b is lower than the one end 7a. It is a tubular member. The communication pipe 7 is disposed on the second direction D2 side with respect to the scraper 4. That is, the communication pipe 7 is disposed on the opposite side of the discharge port 6 with the scraper 4 as the center. One end 7 a of the communication pipe 7 is connected to the lower side than the liquid level W.

  The float tank 8 is a container connected to the other end 7 b of the communication pipe 7. The float tank 8 is arranged so that the liquid level W of the liquid is formed in the internal space of the float tank 8. The upper wall 8a of the float tank 8 is formed to be higher than the liquid level W. The liquid moves between the ash cooling tank 3 and the float tank 8 only through the communication pipe 7. The height of the liquid level W of the ash cooling tank 3 and the height of the liquid level W of the float tank 8 are the same.

A float tank discharge pipe 17 for discharging the liquid in the float tank 8 is provided below the float tank 8. A float tank valve 18 is provided in the float tank discharge pipe 17. The float tank valve 18 is a valve that opens and closes the float tank discharge pipe 17.
An openable lid 19 that can be opened and closed is provided on the upper wall 8 a of the float tank 8. By opening the opening lid 19, the operator can access the inside of the float tank 8.

An overflow liquid receiver 21 is provided inside the float tank 8. The overflow liquid receiver 21 is formed to correspond to the set height of the liquid level W. That is, when the height of the liquid level W becomes higher than the set height, the liquid flows into the overflow liquid receiver 21 and the liquid is discharged to the sedimentation tank 23. No more than that.
A drainage pipe 22 is connected to the overflow liquid receiver 21, and a sedimentation tank 23 is provided at the lower end of the drainage pipe 22. The liquid flowing into the overflow liquid receiver 21 is stored in the precipitation tank 23.

  The float tank 8 is provided with a liquid level gauge 24 for measuring the height of the liquid level W in the float tank 8. The liquid level gauge 24 is electrically connected to the control device 9. The height of the liquid level W measured by the liquid level meter 24 is transmitted to the control device 9.

  A sedimentation tank discharge pipe 25 for discharging the sediment in the sedimentation tank 23 is provided below the sedimentation tank 23. A settling tank valve 26 is provided in the settling tank discharge pipe 25. The settling tank valve 26 is a valve that opens and closes the settling tank discharge pipe 25. By opening the sedimentation tank valve 26, the sediment deposited in the sedimentation tank 23 can be discharged.

  The ash extrusion device 1 has a first liquid supply device 27 that supplies liquid to the vicinity of the discharge port 6. Specifically, the first liquid supply device 27 sprays the liquid onto the ash A2a accumulated in the liquid draining region R of the ash cooling tank 3. The first liquid supply device 27 is provided in the circulating fluid line 29, a circulating fluid injection nozzle 28 disposed above the discharge port 6, a circulating fluid line 29 connecting the circulating fluid injection nozzle 28 and the sedimentation tank 23, and the circulating fluid line 29. And a circulation pump 30 for circulating the liquid in the sedimentation tank 23 to the circulation liquid injection nozzle 28. Since the liquid stored in the settling tank 23 is the liquid that has flowed into the overflow liquid receiver 21, the first liquid supply device 27 substantially circulates the liquid inside the float tank 8 to the circulating liquid injection nozzle 28. Will be.

As shown in FIG. 2, the circulating fluid injection nozzle 28 includes a main body portion 31 extending in the width direction, and a plurality of nozzle portions 32 that are formed in the main body portion 31 and spray the liquid WS. The nozzle portion 32 of the circulating fluid injection nozzle 28 is oriented so as to spray the liquid to the liquid draining region R.
The circulation pump 30 is electrically connected to the control device 9. The control device 9 can control the circulation pump 30. When the circulation pump 30 is operated by the control device 9, the liquid in the settling tank 23 is supplied to the circulation liquid injection nozzle 28 and dispersed on the ash A 2 a accumulated in the liquid draining region R.

  The ash extrusion apparatus 1 has a second liquid supply apparatus 34 that supplies liquid to the ash cooling tank 3. The second liquid supply device 34 is provided in the liquid tank 35 in which a liquid (for example, water) is stored, an injection nozzle 36 that injects the liquid in the liquid tank 35 into the ash cooling tank 3, and the injection nozzle 36. An electric valve 37. The electric valve 37 and the control device 9 are electrically connected. The control device 9 can control the electric valve 37. By controlling the electric valve 37 by the control device 9, the liquid in the liquid tank 35 is injected into the ash cooling tank 3 through the injection nozzle 36.

  The control device 9 controls the second liquid supply device 34 based on the height of the liquid level W measured by the liquid level gauge 24 and supplies a liquid level control unit 92 for supplying the liquid to the ash cooling tank 3. A liquid spraying unit 91 for controlling the first liquid supply device 27 based on the torque of the unit 5 and spraying liquid onto the ash A2a deposited in the liquid draining region R.

The liquid level control unit 92 controls to open the electric valve 37 of the second liquid supply device 34 when the height of the liquid level W measured by the liquid level gauge 24 is lowered from a predetermined liquid level, that is, to open the valve. Control.
The liquid spraying unit 91 receives information related to torque from the drive unit 5 and performs control for operating the circulation pump 30 when the torque of the drive unit 5 becomes equal to or greater than a predetermined value.

Next, the operation of the second liquid supply device 34 of the ash extrusion device 1 of this embodiment will be described.
The ash A2 charged into the ash cooling tank 3 through the ash inlet 2 is cooled by the liquid. The ash A2 cooled in the ash cooling tank 3 is pushed out in the first direction D1 by the scraper 4 and conveyed to the conveyor C. At this time, the liquid inside the ash cooling tank 3 is also discharged along with the ash A2.

  The liquid level control unit 92 of the control device 9 controls the height of the liquid level W by controlling the second liquid supply device 34 based on the height of the liquid level W measured by the liquid level meter 24. Specifically, when the liquid is discharged from the discharge port 6 or the float tank discharge pipe 17 and the height of the liquid level W decreases from a predetermined liquid level, the control device 9 controls the second liquid supply device 34. The electric valve 37 is controlled to open, and the liquid in the liquid tank 35 is injected into the ash cooling tank 3 through the injection nozzle 36. Thereafter, when the height of the liquid level W rises to a predetermined liquid level, the control device 9 controls the electric valve 37 to close the valve, and stops the liquid injection from the liquid tank 35.

Next, the operation of the communication pipe 7 and the auxiliary scraper 16 of the ash extrusion device 1 of this embodiment will be described.
When the scraper 4 retreats, the return ash A3 enters the second inclined surface 12 on the second direction D2 side with respect to the scraper 4. The return ash A3 is ash that enters the second direction D2 side of the scraper 4 from the gap between the scraper 4 and the bottom surface 10 when the scraper 4 is retracted.
Since the communication pipe 7 is formed in the ash cooling tank 3 of the ash extrusion apparatus 1 of this embodiment, the return ash A3 is introduced into the float tank 8 through the communication pipe 7. The return ash A3 accumulated in the float tank 8 can be appropriately discharged through the float tank discharge pipe 17 by opening the float tank valve 18.

  Further, when the scraper body 15 moves in the first direction R1, the auxiliary scraper 16 pushes the return ash A3 back toward the first direction D1. As the scraper body 15 retreats in the second direction R2, the auxiliary scraper 16 guides the return ash A3 to the communication pipe 7. Since the one end 7 a of the communication pipe 7 is inclined above the other end 7 b, the return ash A 3 guided to the communication pipe 7 moves to the float tank 8.

Next, the operation of the first liquid supply device 27 of the ash extrusion device 1 of the present embodiment will be described.
The control device 9 operates the circulation pump 30 of the first liquid supply device 27 when the torque of the drive unit 5 becomes larger than a predetermined value. Thereby, the liquid WS is sprayed from the circulating liquid injection nozzle 28, and the ash A2a deposited in the liquid draining region R is softened. Thereafter, when the torque of the drive unit 5 becomes smaller than a predetermined value, the control device 9 stops the circulation pump 30 of the first liquid supply device 27. As a result, the liquid WS from the circulation liquid injection nozzle 28 is stopped. Spraying is stopped.

According to the above embodiment, the return ash A3 accumulated on the second inclined surface 12 is discharged to the float tank 8 through the communication pipe 7, so that adverse effects of the return ash A3 on the scraper 4 and the drive unit 5 are suppressed. can do. Therefore, the scraper 4 can be operated smoothly without being disturbed by the return ash A3.
Further, by installing the circulating liquid injection nozzle 28 toward the liquid draining region R (in the vicinity of the discharge port 6) where the solidified ash A2a is likely to be deposited, the solidified ash A2a is softened, and the ash carrying capacity is improved. The decrease can be suppressed. In particular, the ash can be efficiently carried out by spraying the liquid to the liquid draining region R where the ash A2a is easily solidified.
As described above, the stability of the operation of the ash extrusion device 1 can be improved.

Moreover, since the opening lid 19 is provided on the upper wall 8a of the float tank 8, the amount of the return ash A3 accumulated in the float tank 8 can be confirmed. When the return ash A3 reaches a certain amount, the float ash valve 18 can be opened and the return ash A3 can be discharged while continuing the operation.
At this time, the liquid level W decreases, but the control device 9 controls the second liquid supply device 34 so that the height of the liquid level W can be raised to a predetermined liquid level and held.
Moreover, by opening the opening lid 19 of the float tank 8, the inside of the communication pipe 7 and the float tank 8 can be easily cleaned.

  Further, since the ash cooling tank 3 and the float tank 8 communicate with each other only through the communication pipe 7, the liquid level W of the ash cooling tank 3 and the liquid level W of the float tank 8 are physically separated. As a result, scum (floating ash) drifting in the vicinity of the liquid surface W of the ash cooling tank 3 is unlikely to enter the float tank 8. For this reason, the risk that the liquid level meter 24 becomes dirty and the liquid level measurement is hindered is reduced.

[Modification]
Hereinafter, modifications of the embodiment of the present invention will be described in detail with reference to the drawings. In the modified example, the difference from the above-described embodiment will be mainly described, and the description of the same part will be omitted.
As shown in FIG. 3, the modified ash cooling tank 3 and float tank 8 include an opening 40 (second communication) formed in a partition wall 39 that partitions the ash cooling tank 3 and the float tank 8 in addition to the communication pipe 7. Part). The opening 40 is formed so that the liquid level W of the ash cooling tank 3 and the liquid level W of the float tank 8 are made continuous. The opening 40 is formed such that the lower end 40 a of the opening 40 is lower than the liquid level W and the upper end 40 b is higher than the liquid level W.
The modified ash cooling tank 3 and the float tank 8 communicate with each other not only through the communication pipe 7 but also through the opening 40 formed in the vicinity of the liquid surface W.

  According to this modification, since the liquid level W of the ash cooling tank 3 and the liquid level W of the float tank 8 are not physically separated, scum drifting on the liquid level W of the ash cooling tank 3 is generated in the float tank 8. Although entering, the scum can be removed safely and easily while the opening lid 19 is opened and the operation is continued.

As mentioned above, although embodiment and modification of this invention were explained in full detail with reference to drawings, the concrete structure is not restricted to embodiment and modification, The design change of the range which does not deviate from the summary of this invention, etc. Is also included.
In addition, although the 1st liquid supply apparatus 27 of this embodiment is comprised so that the liquid of the sedimentation tank 23 (float tank 8) may be circulated to the circulating liquid injection | pouring nozzle 28, it is not restricted to this. For example, as shown in FIG. 4, a first liquid supply device 27 </ b> B that circulates the liquid stored in the ash cooling tank 3 to the circulating liquid injection nozzle 28 may be used. Also in this case, like the first liquid supply device 27, the first liquid supply device 27B is controlled by the control device 9.

DESCRIPTION OF SYMBOLS 1 Ash extrusion apparatus 2 Ash introduction port 3 Ash cooling tank 4 Scraper 5 Drive part 6 Discharge port 7 Communication pipe (1st communication part)
8 Float tank 8a Upper wall 9 Control device 10 Bottom surface 11 First inclined surface (inclined surface)
12 Second inclined surface 14 Rotating arm 15 Scraper body 16 Auxiliary scraper 17 Float tank discharge pipe 18 Float tank valve 19 Opening lid 21 Overflow liquid receiver 22 Drain pipe 23 Precipitation tank 24 Liquid level gauge 25 Precipitation tank discharge pipe 26 Precipitation tank Valves 27 and 27B First liquid supply device 28 Circulating fluid injection nozzle 29 Circulating fluid line 30 Circulating pump 31 Main body portion 32 Nozzle portion 34 Second liquid supply device 35 Liquid tank 36 Injection nozzle 37 Electric valve 39 Partition wall 40 Opening ( Second communication part)
91 Liquid spraying part 92 Liquid level control part A Ash C Conveyor R Liquid draining area S1 First central axis S2 Second central axis S3 Third central axis W Liquid level

Claims (6)

An ash inlet through which ash incinerated in a waste incinerator is introduced;
An ash cooling tank that is connected to the lower side of the ash inlet, has an inclined surface that is inclined upward, and is filled with liquid up to the lower end of the ash inlet; and
A scraper for extruding the ash introduced into the ash cooling tank to the downstream side;
A drive unit for driving the scraper so as to advance and retreat; and
A discharge port connected to the inclined surface and from which the ash pushed out by the scraper is discharged;
One end connected to the opposite side of the discharge port with the scraper as a center and below the liquid level of the liquid in the ash cooling tank, ,
A float tank connected to the other end of the first communication section;
A liquid level meter for measuring the liquid level of the float tank;
A first liquid supply device for supplying the liquid to the vicinity of the discharge port;
A second liquid supply device for supplying the liquid to the ash cooling tank;
A control device for controlling the first liquid supply device and the second liquid supply device based on information on the liquid level meter and information on the torque of the drive unit;
The other end of the first communication portion is lower than the one end,
The control device controls the second liquid supply device to supply the liquid to the predetermined liquid level when the liquid level drops from a predetermined liquid level based on the information of the liquid level meter. ,
An ash extrusion apparatus characterized in that, when the torque becomes a predetermined value or more based on information on the torque, the first liquid supply device is controlled to supply the liquid to the vicinity of the discharge port. The first liquid supply device includes:
A circulating liquid injection nozzle that is disposed above the discharge port and sprays the liquid onto a liquid draining region of the ash cooling tank;
Ash extrusion apparatus according to claim 1, characterized in that it comprises a circulation pump for circulating the liquid in the float tank on the circulating liquid injection nozzle. The scraper, a scraper body for extruding the ash;
The ash extrusion device according to claim 2, further comprising: an auxiliary scraper connected to the scraper main body and guiding returned ash out of the ash to the first series passage portion. Further comprising an openable / closable opening lid provided above the float tank,
The ash extrusion apparatus according to claim 3, wherein the inside of the float tank can be cleaned by opening the opening lid.   The said 1st communicating part is a pipe | tube which connects the said ash cooling tank and the said float tank, The said ash cooling tank and the said float tank are connected only by the said pipe | tube. The ash extrusion apparatus according to any one of claims 1 to 4.   5. The apparatus according to claim 1, further comprising a second communication portion formed so as to make the liquid level of the ash cooling tank and the liquid level of the float tank continuous. Ash extrusion equipment.

Images