JP4570434B2 - Incineration ash heat treatment equipment - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a heat treatment apparatus for incineration ash used for decomposing dioxins contained in fly ash collected in an exhaust gas treatment process or the like mainly in incineration facilities such as municipal waste and industrial waste. is there.

  The low-temperature fly ash generated from the dust collector or the like in the exhaust gas treatment in the garbage incineration facility is temporarily stored and then sent to the thermal decomposition apparatus, where dioxins are thermally decomposed. As shown in FIG. 11, this thermal decomposition processing apparatus rotationally drives the outer cylinder 101 and the inner cylinder 102 with the fly ash conveying blades 103 and 104 mounted inside and outside to heat-treat the received fly ash. It is configured. The supplied fly ash is supplied from the outside between the inside of the outer cylinder 101 and the outside of the inner cylinder 102, and is moved in the axial direction while being stirred by the guide blade 103 spirally attached to the outer wall of the inner cylinder 102, The fly ash that has reached the end is dropped into the inner cylinder 102 from the opening 106 of the inner cylinder 102 and is stirred in the reverse direction while being agitated by the feed blade 104 attached to the partition plate 105 provided inside the inner cylinder 102. It is sent and heated during this time and sent out.

  In this thermal decomposition apparatus 100, an electric heater 107 or the like is used as a heat source for dioxin decomposition, and a heating zone 109 in which a casing 108 to which the heater 107 is mounted from the final part of the outer cylinder 101 to the intermediate part is wrapped around the circumference of the outer cylinder 101. Is arranged. The supplied fly ash is directly heated in the heating zone 109 from the heat exchange zone a by the guide vanes 103 attached to the outside of the inner cylinder 102 from the charging section 110 provided in the front part of the outer cylinder 101. It is sent to the heating zone b over time and heated. The dioxins in the fly ash are gradually decomposed in the primary heating zone b, and are further dropped into the inner cylinder 102 from the opening 106 at the end of the inner cylinder 102 and fed into the secondary heating zone c to further promote the decomposition. . In this secondary heating zone c, a partition plate 105 with reverse feed blades 104 is provided inside the inner cylinder 102, and the fly ash that is fed is heated and moved from the heating zone 109 through high temperature conduction through the outer cylinder 101. In the meantime, dioxins are completely decomposed. And while moving to the exit side, it is processed and discharged from the discharge port 112 of the inner cylinder 102 by the reverse feed blade 104 while gradually exchanging heat with the low-temperature fly ash (supplied fly ash) outside the inner cylinder 102. . Such a processing apparatus is known from Patent Document 1.

JP 2003-126802 A

  However, in the heat treatment apparatus and the treatment apparatus known from Patent Document 1, the residence time of fly ash, which is the original purpose, is determined by the rotational speed of the inner cylinder 102. However, since the amount of fly ash supplied is determined by the amount carried by the guide vanes 103 outside the inner cylinder 102, the moving speed inside the inner cylinder 102 also changes at the same time as the rotation speed of the inner cylinder 102 changes. Therefore, there is a problem that the supply amount cannot be adjusted independently. In other words, if the supply amount of fly ash is increased in order to increase the processing capacity, there is a problem that the processing capacity cannot be increased because the dioxins are sent out from the apparatus in a state where they cannot be completely processed.

  The present invention has been made to solve the above-described problems. By changing the mounting pitch and the inclination angle of the reverse feed blades inside the inner cylinder, the present invention can be applied without changing the rotational speed of the inner cylinder. An object of the present invention is to provide a heat treatment apparatus for incinerated ash that can adjust the residence time of the processed product in the apparatus.

In order to achieve the above object, a heat treatment apparatus for incineration ash according to the first invention comprises:
An inner cylinder is rotatably arranged coaxially in a stationary outer cylinder, and the treated ash supplied to one end of the space between the inner and outer cylinders by a spiral blade attached along the outer periphery by rotation of the inner cylinder After moving to the other end in the direction, it is fed into the inner cylinder, moved in the reverse direction with the feed vanes arranged inside the inner cylinder, and discharged from the inner cylinder end to the outside, from the outside of the outer cylinder In a heat treatment apparatus for incinerated ash that heats the treated ash by applying heat,
The main shaft for supporting the inner cylinder, on both sides along the partition wall bisecting the inside inner tube in the diameter direction, a number of feed blades at a desired pitch in the axial direction is rotatably supported to the intermediate portion to the support member tilting is capable disposed, these support shafts of the feed blades is connected to a series by link the partition wall inside, at the feed blade adjusting means provided at one end of the inner cylinder, said support member through said link It is configured such that the tilt angle and the arrangement pitch of the feed blades are adjustable by moving in the axial direction, and the residence time of the treated ash in the inner cylinder is adjustable.

The incineration ash heat treatment apparatus according to the second invention
The inner cylinder is rotatably arranged coaxially in the outer cylinder to be fixed, and the to-be-treated ash supplied to one end of the space between the inner and outer cylinders by the spiral blade attached along the outer periphery by the rotation of the inner cylinder After moving to the other end in the direction, it is fed into the inner cylinder, moved in the reverse direction with the feed vanes arranged inside the inner cylinder, and discharged from the inner cylinder end to the outside, from the outside of the outer cylinder In a heat treatment apparatus for incinerated ash that heats the treated ash by applying heat,
On the main shaft supporting the inner cylinder, a number of feed blades are arranged at both sides along a partition wall that bisects the inside of the inner cylinder in the diametrical direction with a required pitch in the axial direction, with intermediate portions fixed to the support member The support members for the feed blades are connected in series by a link inside the partition wall body, and the support member is moved in the axial direction via the link by the feed blade adjusting means provided at one end of the inner cylinder. is adjustable arrangement pitch of the feed vanes is one in which the residence time of the treated ashes in the inner tube, characterized in that it is configured to be adjusted.

In the first or second aspect, a partition wall bisecting the inside of the inner tube in the diameter direction is made of two sheets of partition plates which are fixed in parallel on both sides from the center at the required intervals, Part II It is preferable that the link is arranged inside a partition plate (third invention).

  In the first invention or the second invention, the main shaft supporting the inner cylinder is configured such that four square members are arranged in parallel at a predetermined interval with respect to the inner cylinder axis. Good (fourth invention).

  Further, in the first invention, the support member on which the feed blade is supported is on the left and right sides of the axis of the main shaft, on the outside across the two square members arranged above and below, and the feed blade adjustment The support blades are supported so as to be slidable in the axial direction except for the support members adjacent to the means, and the main portion of the feed blade is fixed to the support shaft which is provided so as to be rotatable perpendicularly to the main axis line at the center of these support members. (5th invention).

  In the fifth aspect of the present invention, the support shaft that is rotatably supported on the support member fits the feed blade mounting seat into a stepped recess provided on the support member, and the outer periphery thereof can be rotated by a retaining piece. (6th invention).

  Further, in the second invention, the support member for supporting the feed blade is adjacent to the feed blade adjusting means on the outside straddling the two square members arranged vertically on the left and right sides of the main shaft. It is preferable that the support member is slidably supported in the axial direction except for the supporting member, and the pair of left and right support members are connected to each other by a support shaft that penetrates the space portion of the main shaft (seventh invention). ).

  In the first invention or the second invention, the link for connecting the support member of the feed blade is pin-connected to the link whose pivot is pivotally supported by the support shaft and connected at both ends at an equal distance from the support shaft. It is good that it is configured (eighth invention).

In the fourth aspect of the invention , the space portion generated in the axial direction between the square members constituting the main shaft is fitted into the space portion on the support member of the feed blade attached to the outer surface of the square member. required length of the closed section piece that fits the closing piece of the respective support member adjacent mounted so as Kasaneau part mutually in the space portion by respective support members attached closing piece is closed It is good to be formed (9th invention).

The incineration ash heat treatment apparatus according to the tenth invention is
An inner cylinder is rotatably arranged coaxially in a stationary outer cylinder, and the treated ash supplied to one end of the space between the inner and outer cylinders by a spiral blade attached along the outer periphery by rotation of the inner cylinder After moving to the other end in the direction, it is fed into the inner cylinder, moved in the reverse direction with the feed vanes arranged inside the inner cylinder, and discharged from the inner cylinder end to the outside, from the outside of the outer cylinder In a heat treatment apparatus for incinerated ash that heats the treated ash by applying heat,
The main shaft that supports the inner cylinder is arranged on both sides along the partition wall that bisects the inside of the inner cylinder in the diametrical direction, with a number of feed blades tilting at the required pitch in the axial direction, with the middle part pivotally attached. is, the support shaft of the feed blades is connected to a series by link the partition wall inside, at the feed blade adjusting means provided at one end of the inner cylinder, the inclination angle of said feed blade through said link By adjusting, the residence time of the to-be-processed ash in an inner cylinder is comprised so that adjustment is possible, It is characterized by the above-mentioned.

  In the tenth aspect of the invention, the main shaft has a box structure in which a pair of belt-like plate members arranged in parallel at a required interval on the left and right sides of the shaft center are connected by a connecting member at a required interval at the upper and lower positions. It is preferable that the intermediate portion of the feed blade is attached to the support shaft disposed across the main shaft at a required interval on both the left and right sides (11th invention). Further, the feed blade is disposed at the end of the inner cylinder by pivotally attaching the distal ends of the links, each of which is attached to the support shaft to the inner side of the partition wall body, to one operation rod. It is preferable that the tilt angle of the feed blade can be adjusted by interlocking with the feed blade adjusting means via the operation rod (the 12th invention).

In the eleventh invention, the space portion generated vertically in the main axis of the box structure, it is preferable to attach the partition plate constituting the partition wall to the main shaft is configured to be cut off from the moving space of the processed ash (No. 13 invention).

  In the first invention, the second invention, or the tenth invention, the feed blade adjusting means includes a screw shaft that is inserted from the outside so as to be able to advance and retract perpendicularly to a face plate that closes the inner cylinder end, and an inner end of the screw shaft. A connecting piece that is movably connected to one end of a link structure that is supported by the feed blade so as to tilt or move the feed blade, and a support member that moves and fixes the screw shaft in the axial direction. (14th invention).

  In the first invention, the second invention, or the tenth invention, the treated ash inlet from the outside to the inside provided at the end of the inner cylinder has an opening edge wall that protrudes along the edge of the opening toward the inside of the cylinder. It is good to be provided (15th invention).

  According to the present invention, the inclination angle of a large number of feed blades provided in an inner cylinder that rotates within a stationary outer cylinder is adjusted from the outside using a link mechanism, and the arrangement interval of the feed blades is adjusted. Since the residence time of the treated ash supplied in the system can be optimally selected, the moving speed of the treated object (treated ash) can be set without changing the rotation speed of the inner cylinder. It can heat-treat well and increase the processing capacity. Further, the residence time of the workpiece can be changed without changing the rotation speed of the inner cylinder. In other words, since the residence time can be changed regardless of the processing amount, reliable thermal decomposition processing can be performed.

  And according to 1st invention, according to the supply amount with which the to-be-processed ash supplied in an outer cylinder is supplied to an inner cylinder with a spiral blade, the feed blade arrange | positioned inside a rotating inner cylinder is the inner cylinder. When the link mechanism is operated by the feed blade adjusting means at the outer end of the blade, and the support member of the feed blade is operated along the main axis, the inclination angle of the feed blade is changed and the arrangement interval thereof is changed. If the inclination angle is increased with respect to the axis, the arrangement interval is shortened, the feed rate of the ash to be treated is slowed, and the residence time is lengthened. Further, when the feed blade is operated in reverse, the feed speed increases and the residence time can be shortened. Since the feed blade can freely change its inclination angle and move in the axial direction, even if a lump may adhere to the inner wall of the inner cylinder, the feed blade is raked up by moving it upright. There is an advantage that it can be processed.

  According to the second invention, the inclination angle of the feed blade is kept constant, but the residence time can be adjusted by moving the support member in the axial direction by the link mechanism and the feed blade adjusting means. In this configuration, since the feed blades are fixedly arranged, there is an advantage that the influence on the feed blade support portion can be reduced by the operation of scraping and dropping the object to be processed, and it can be used stably. According to the tenth aspect of the present invention, since the inclination angle of the workpiece can be adjusted while keeping the arrangement interval of the feeding blade constant, the inclination angle of the feeding blade is externally adjusted by the feeding blade adjusting means. There is an advantage that it is possible to grasp and reliably set. In addition, since the support portion of the feed blade does not slide, there is an advantage that it is hardly affected by foreign matter and can maintain a stable state.

  Further, according to another invention in addition to the above invention, the adjustment of the feed blade is a configuration in which the link mechanism is operated inside the partition wall body that is blocked from the object to be handled, so that it contacts the powder fluid. It can be operated smoothly without any problems. Further, the support member of the feed blade is configured to be slidable along a main shaft constituted by a plurality of square members, and is connected to a link mechanism via a support shaft attached to the support member and operates in series. Therefore, the feed blades can be reliably adjusted by advancing and retracting a large number of feed blades at one end of the link mechanism. In addition, since the adjustment operation can be performed by moving the screw shaft back and forth, it is possible to know the tilt angle of the feed blade that cannot be directly viewed by the amount of movement of the screw shaft at that position.

  Furthermore, since each of these feed blades has a structure that can be disassembled, it can be replaced as a single item when worn or damaged due to use, and there is an advantage that the cost of maintenance is low.

  According to the fifteenth aspect of the invention, the opening wall that protrudes inward along the edge is provided on the inner side of the opening portion of the treated ash inlet from the outside of the inner tube provided on the peripheral surface of the one end portion of the inner tube. Therefore, when the ash to be treated fed into the inner cylinder is sequentially sent to the discharge port side by the feed blades by the rotation of the inner cylinder, it can be prevented from flowing back to the outside and reliably advanced and processed. is there.

  Next, a specific embodiment of the heat treatment apparatus for incineration ash according to the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a longitudinal sectional view showing the outline of the heat treatment apparatus for incinerated ash according to the first embodiment of the present invention. 2 is an enlarged sectional view in one compartment of the main part of the present embodiment, FIG. 3 is an enlarged sectional view in the other compartment, and FIG. 4 is a sectional view taken along line AA in FIG. A front view (b) and a cross-sectional view (c) of the main part of the feed blade support are shown, and an exploded perspective view of the main part is shown in FIG.

  The heat treatment apparatus 1 of this embodiment includes an outer cylinder 3 having a required dimension supported on a base 2 by a support frame 2 ′ while maintaining an axial center substantially horizontal, and is rotatable coaxially within the outer cylinder 3. An inner cylinder 4 attached to a main shaft 10 that is pivotally supported on the inner cylinder, a heating means 7 that heats the ash to be treated by surrounding a part of the outer periphery of the outer cylinder 3, and an ash to be treated attached to the inner cylinder 4 And ash feed means for reciprocating in the axial direction.

  The outer cylinder 3 and the inner cylinder 4 are arranged concentrically so that a space portion 5 having a required dimension is formed between them. As described above, the outer cylinder 3 is fixed on the base 2 by the support frame 2 'while maintaining the axis substantially horizontal. A heat-resistant layer 6 is wound around the outer periphery of the outer cylinder 3 to perform heat insulation, and a heating unit is provided in the latter half of the entire length as the heating means 7 so that a large number of electric heaters 7a surround the entire periphery. The inside is heated via the outer cylinder 3. A treated ash supply port 8 is provided above the front portion of the outer tube 3 with respect to the space portion 5 between the inner and outer tubes, and the treated ash fed from the supply port 8 to the space portion 5 is rearward in the axial direction. Is heated by the heating unit (heater 7a).

  The inner cylinder 4 is fixed by supporting face plates 15 and 15 ′ attached to both front and rear ends by a main shaft 10 which is longer than the entire length of the outer cylinder 3 and penetrates the shaft center, and is a rotational power applied to the main shaft 10. It is provided to rotate inside the outer cylinder 3 at a predetermined speed. A spiral blade 9 is attached to the outer peripheral surface of the inner cylinder 4 with a required lead within a range that fits inside the outer cylinder 3, and the inner cylinder 4 and the inner cylinder 4 outer surface are rotated by the rotation of the inner cylinder 4. The to-be-processed ash sent from the supply port 8 of the outer cylinder 3 is moved to the space part 5 formed between and the rear end part. In addition, the front and rear ends of the space portion 5 are arranged at the rear side by a seal mechanism 13 provided between the ring-shaped closing plate 3a attached to the end portion of the outer cylinder 3 and the inner cylinder 4 circumferential surface, The ash to be treated is prevented from leaking to the outside by a sealing mechanism 13 ′ between the ring-shaped closing plate 3 b attached to the outer cylinder 3 side and the outer peripheral portion of the support face plate 15 at the end of the inner cylinder 4.

  Furthermore, the inside of the inner cylinder 4 is divided into two chambers by a partition wall body 16 in the diameter direction over the entire length. The partition wall body 16 is disposed by supporting two partition plates 16 '(substantially a partition plate having a required length is formed over the entire length) on the main shaft 10 in a diametrical direction at a required interval. Has been.

  As shown in FIG. 4 (a), the main shaft 10 has a total of four bars 11 having a square cross section in the left-right direction (diameter direction) and the vertical direction with respect to the axis C (hereinafter referred to as a square shape). Members 11) are arranged in parallel at a necessary interval, and the support face plate 15 that closes the end of the inner cylinder 4 and the front support face plate 15 'outer portion (may be the support face plate 15' location) It is fixed to and integrated with the plates 12, 12 '. Then, substantial support shafts 10a and 10b are connected on one axis using the respective disks 12 and 12 'as joints, and are supported by bearings 17 and 17' at the shaft neck portions of the support shafts 10a and 10b. .

  Inside the inner cylinder 4, a number of feed blades 20 are arranged as feed means together with spiral blades 9 attached to the outer periphery. A large number of the feed blades 20 are attached to the outer side surfaces of the partition wall body 16 on the support members 21 supported on the side surfaces of the main shaft 10 and arranged in the axial direction at a required interval. A support shaft 23 of a feed blade 20 supported by the support member 21 in a direction orthogonal to the axis of the main shaft 10 is attached to a link mechanism connected in series, and the link mechanism adjusts the inclination angle and the arrangement interval of the feed blade 20. Can be done.

  As shown in FIGS. 2 to 5, the feed blade 20 has a length slightly longer than the diameter of the inner cylinder 4 and a width dimension (a dimension in the radial direction of the inner cylinder 4) of ½ of the radius of the inner cylinder 4. A plate material having an appropriate thickness (not limited to this) and having an appropriate thickness, and both longitudinal ends are formed in an arc shape corresponding to the inner periphery of the inner cylinder 4. The feed blade 20 is attached to a support shaft 23 that is rotatably supported at the center of the support member 21 at an intermediate position thereof, and the ash to be treated is forward (to the axis of the inner cylinder 4 ( It is disposed in an inclined manner in a posture of feeding toward the discharge side. In the drawing, the opposite side of FIG. 2 appears in the opposite posture (see FIG. 3), but when reversed by rotation, both directions are the same.

  A support shaft 23 that supports the feed blade 20 is inserted into a shaft hole 22 that passes through the center of the support member 21 and is rotatably supported. A circular seat plate 23a is integrally formed on the outer side of the support shaft 23. The support shaft 23 is held in a diagonal position so that the support shaft 23 is not slipped out by retaining brackets 24 and 24 that are bolted to the outer surface of the support member 21. The other end portion of the support shaft 23 thus formed protrudes from the back surface of the support member 21 toward the center side of the main shaft 10, and a backbone portion of a link 28 (28 ′) described later is fixed to the end of the support shaft 23. The It should be noted that the base end of the feed blade 20 is welded so as to pass through the center of the surface of the circular seat plate 23a of the support shaft 23 formed as described above, and is orthogonally fixed.

The support member 21 is formed in a square shape, and a slide groove 21a is formed in a lateral direction so that the back side is straddled on the two upper and lower square members 11 constituting the main shaft 10 at the side surfaces, A circular recess 22a for receiving the support shaft insertion hole 22 and the circular seat plate 23a is provided coaxially at the center of the surface. Further, the support member 21 is secured from the main shaft 10 via the support shaft 23 by a trunk portion of a link 28 (28 ') attached to the end of the support shaft 23. Although the structure is the same, the support member (fixed support member 21A) located at the rear end is fixed to the main shaft 10 and does not slide in the axial direction. Further, a gap portion (space portion) is formed between the square members 11, 11 arranged on the upper and lower sides of the main shaft 10 on which the support member 21 is supported. In order to close the gap portion, On the back surface, an elongated closing piece 25 of a size that fits into the gap is attached to both sides of the supporting member 21 so as to partially overlap each other and to be slidable on both sides. Therefore, as will be described later, the ash to be treated is swept up by the feed blade 20 and dropped inside the inner cylinder 4, and even if the ash to be treated falls on the main shaft 10, Can be prevented.

  A large number of support members 21 configured in this manner are arranged along the main shaft 10 at a required pitch so as to be symmetrically positioned on both outer sides of the partition wall body 16. As shown in FIG. 2 or FIG. 3, each of the support members 21 has a support shaft with an equal inclination angle in a posture in which the feed blade 20 is inclined backward in one compartment inside the inner cylinder 4. 23 is supported. On the other hand, in the other compartment, the inclination direction of each feed blade 20 is arranged in the opposite direction to the feed blade 20 in a side view. However, when the inner cylinder 4 is rotated halfway, both directions are the same.

  The link 28 (28 ') is provided with connecting pin holes 28a at equidistant positions at both ends from the main part attached to the support shaft 23 with a total length shorter than the length of the feed blade 20. . Each link 28 (28 ') has the same length and is fixed to the support shaft 23 by alternately changing the direction, and is connected to the pin 28b by connecting pin holes 28a at both ends. The A series of link mechanisms 29 are formed at the end portion of the link 28A attached to the support shaft 23 of the support member 21A at the fixed position and connected to the feed blade adjusting means 30 attached to the support face plate 15 at the end of the inner cylinder 4. Is done. The link mechanism 29 is also formed in the same manner with respect to the support members 21 and 21 of both feed blades 20 and 20 inside the partition wall body 16.

  The feed blade adjusting means 30 connected to the end portion of the link mechanism 29 is supported by the support face plate 15 on the extension line of the link mechanism 29. The feed blade adjusting means 30 includes a screw shaft 31 that is screwed into the support face plate 15 in parallel with the axis of the main shaft 10 in the same direction so as to be able to advance and retreat from the outside, and a tip of the screw shaft 31. It is comprised with the connection metal fitting 32 and the fixed internal thread 33 (nut) which are rotatably hold | maintained. The connection fitting 32 and the link 28A of the link mechanism 29 are connected to a long pin 32a provided in the connection fitting 32 by a connection pin 28c at a connection pin hole at the end of the connection link 28A. The elongated hole 32a provided in the coupling fitting 32 is formed in a direction intersecting the axis of the screw shaft 31, and the coupling pin 28c moves through the elongated hole 32a according to the displacement angle of the link 28A. Has been able to maintain.

  On the other hand, the inflow port 40 of the to-be-processed ash that is heated and fed outside the inner cylinder 4 with respect to the feeding means inside the inner cylinder 4 by such a large number of feed blades 20 is on the peripheral surface of the rear end portion of the inner cylinder 4. The upper position of the inflow-treated ash is received by the feed blades 20 inclined backward at the final position, one at each of the respective compartments partitioned by the partition wall 16 inside. Provided. On the inner edge of the opening of the inflow port 40, an opening wall 41 protrudes inward with an appropriate height. By carrying out like this, the to-be-processed ash received when the inner cylinder 4 rotates can be sent without returning to the exterior (backflow).

  A discharge port 50 is provided at the inner tip of the inner cylinder 4 formed in this way, and a weir (not shown) is provided in front of the discharge port 50 so that the discharge does not occur due to rotation. ing. The tip of the inner cylinder 4 is sent to a recovery device through a treated ash discharge chamber 51 disposed at the position, and a dust filter 52 is provided above the discharge chamber 51 to provide an exhaust gas. It is configured so that dust is not mixed and discharged. In the figure, reference numeral 53 is a wind exhauster, 54 is a service tank for treated ash, and 55 is a feeder (see FIG. 1).

  In the incineration ash heat treatment apparatus 1 of the present embodiment configured as described above, the electric heater 7a in the heating unit is operated, and the inner cylinder 4 is rotationally driven at a predetermined speed by a driving device (not shown). to go into. In this state, treated ash such as fly ash stored in the service tank 54 is supplied from the supply port 8 of the outer cylinder 3 to the internal space 5 by the feeder 55. The to-be-treated ash fed from the supply port 8 pivots on the space portion 5 formed between the outer cylinder 3 and the inner cylinder 4 at a predetermined speed by the spiral blade 9 provided on the outer periphery of the rotating inner cylinder 4. Move toward the rear end in the direction (indicated by arrow D). During this time, the ash to be treated is heated by the heater 7a of the heating section in the heating zone while being stirred by the spiral blade 9.

  When the to-be-treated ash reaches the end of the space 5, the to-be-treated ash is dropped into the inner cylinder 4 sequentially from the inlet 40 that opens at that position. Since the feed blade 20 that is tilted rearward is positioned directly below the inflow port 40, the to-be-treated ash that falls is sent forward by the feed blade 20. At this time, the to-be-treated ash that slides down on the feed blade 20 is a space e (see FIG. 4A) in which the feed blade 20 is formed between the side surface of the partition wall body 16 and the inner peripheral surface on the opposite side. See also) Sliding down to the side. Since the inner cylinder 4 rotates at a predetermined speed, the space portion e is in the communication state in the axial direction on the side of the feed blade 20. Therefore, when the space portion e moves upward due to rotation, the position can be freely changed. As a result, it is shifted to the partition side by the front feed blade 20 and is gradually swept forward by the feed blade 20 at the front position as it is rotated. In addition, the ash to be treated is loosened while repeating the dropping operation and is heated by receiving heat conducted from the heating portion to the inner cylinder 4, and the dioxins present in the ash are pyrolyzed. Sent forward. Such processing operation and behavior of the to-be-treated ash are similarly performed on both sides divided by the partition wall body 16.

  When the treated ash that has been heat-treated moves to the first half of the inner cylinder 4, the untreated ash is supplied to the space 5 on the outer peripheral surface of the first half and is sent to the heating zone by the spiral blade 9 Therefore, the heat quantity of the treated ash is transferred to the untreated ash from the inner side of the inner cylinder 4 toward the outer peripheral part, and can be preheated in this zone. Therefore, the heat balance can be improved by exchanging heat with the untreated ash that is sequentially fed to promote the heat treatment in the heating zone and recovering the heat by preheating. The heat-treated treated ash is sent out from the discharge port 50 at the tip of the inner cylinder 4 through the discharge chamber 51 to the recovery device.

  In this embodiment, in the heat treatment in this way, the rotation speed of the inner cylinder 4 is set to the optimum condition and is rotated. On the other hand, in the apparatus, in other words, the inner cylinder 4 is heated for heating. The residence time of the treated ash can be adjusted. That is, when it is necessary to increase the processing speed with respect to the set residence time by changing the inclination angle of the feed blade 20 and the arrangement interval thereof, the feed blade adjusting means 30 is operated to move the screw shaft 31 inward. When moved in the pushing direction, the first link 28 </ b> A connected via the connection fitting 32 is rotated in the direction that occurs from the support shaft 23 on the support member 21 </ b> A to which the first link 28 </ b> A is fixed. Each link 28 is attracted to the first link 28A side through the second link 28 connected to the link 28A. Accordingly, the support members 21 that support the links 28 are drawn to the fixed support member 21A side along the square members 11 and 11 of the main shaft 10 through the links 28 that are connected. As a result, the inclination angle of each feed blade 20 is rotated in an acute angle direction, and at the same time the arrangement interval is narrowed. Therefore, since the moving distance of the to-be-processed ash which is scraped and dropped by each feed blade 20 becomes short, residence time becomes long.

  On the contrary, in order to shorten the residence time of the ash to be treated inside the inner cylinder 4, when the screw shaft 31 in the feed blade adjusting means 30 is operated to move outward in the direction of pulling outward, the connecting fitting 32 is moved. Since the first link 28A connected via the first link 28A is rotated in a direction to be lowered with reference to the support shaft 23 on the fixed support member 21A, the second link 28 connected to the first link 28A is connected to each link 28. The support shaft 23 of each support member 21 is rotated by the link mechanism 29 in the opposite direction to that described above, and the feed blade 20 is rotated in the direction of an obtuse angle, and at the same time, each support member 21 is connected to the main shaft 10. By sliding in the direction away from the fixed support member 21 </ b> A along the square members 11, the arrangement interval is widened. Therefore, the moving distance of the to-be-processed ash that is scraped and dropped by each feed blade 20 is increased, and as a result, the residence time is shortened.

  As described above, according to this embodiment, the feed blade 20 arranged inside the inner cylinder 4 can be operated at the same time by adjusting the tilt angle and the arrangement interval by operating the link mechanism 29 from the outside. Thus, the residence time of the ash to be treated can be adjusted without changing the rotational speed of 4, and the heat treatment operation can be effectively performed. In the feed blade adjusting means 30, the condition setting of the feed blade 20 can be adjusted by an operation of moving forward and backward by rotating the screw shaft 31, so that the amount of movement of the screw shaft 31 and the condition of the feed blade 20 are confirmed in advance. In this case, the condition can be set by moving the screw shaft 31.

(Second Embodiment)
The perspective view showing the principal part of the heat processing apparatus of the incinerated ash based on 2nd Embodiment of this invention is shown by FIG. 7 shows a cross-sectional view of the heat treatment apparatus viewed in the BB direction of FIG. 6, and FIG. 8 shows an exploded perspective view of the main part.

  The incineration ash heat treatment apparatus 1A of this embodiment is the same in basic configuration as the apparatus of the first embodiment, and the inclination of the feed blade 20 is adjusted for the adjustment of the feed blade 20 provided inside the inner cylinder 4. It is different in that it is fixed to a certain condition. Therefore, different parts in the configuration will be described, and the same or the same configuration as that in the above embodiment will be denoted by the same reference numeral as in the above embodiment, and detailed description thereof will be omitted.

  A large number of feed blades 20 arranged inside the inner cylinder 4 have a length slightly longer than the diameter of the inner cylinder 4 and a width dimension (a dimension in the radial direction of the inner cylinder 4), as in the above-described embodiment. A plate material having an appropriate thickness that is about 1/2 of the radius of 4 (but not limited to this), and has both longitudinal ends formed in an arc shape corresponding to the inner periphery of the inner cylinder 4. The feed blade 20 has a predetermined inclination angle in a posture crossing the axis on the outer surface of the support member 21 slidably mounted along the main shaft 10 in which the four square members 11 are arranged. The intermediate position is fixed at.

  The support members 21 to which the feed blades 20 are attached are arranged at the same position one by one so that the four rectangular members 11, 11 constituting the main shaft 10 are straddled on both sides of the axis. At the center position, one support shaft 23A is inserted between the square members 11 and 11 of the main shaft 10 and fastened with bolts 23 ″, and is integrally slidable with the main shaft 10 interposed therebetween. The feed blades 20 attached to the respective support members 21 in this state are attached in a posture inclined in the same direction when reversed from the side, but in a state viewed from the axial direction of the main shaft 10. Appears in the opposite direction.

  In this way, the support member 21 that supports the feed blades 20 arranged in large numbers along the main shaft 10 has a link 28 pivotally supported by the support shaft 23A on the inner side of the partition wall body 16 in a cross shape. They are connected in series by a linked link mechanism 29A. The link mechanism 29A crosses the link 28 that is shorter than the length of the feed blade 20 in the same manner as in the above-described embodiment, and is pin-connected at both ends, and as in the first embodiment, the fixed support member at the final end position. The end of the first link 28A pivotally supported by the support shaft 23A of 21A is movably connected to the connection fitting 32 of the feed blade adjusting means 30 attached to the support disk 15, and is pushed and pulled by the screw shaft 31. As a result, each link 28 is rotated via the second link 28 connected to the first link 28A, and by the rotation of the link 28, the support members 21 are sequentially slid along the main shaft 10 in sequence, It is possible to adjust the residence time of the ash to be treated that moves in the inner cylinder 4 by changing the arrangement interval of the feed blades 20 attached to each support member 21 at a fixed inclination angle.

  According to this embodiment, when each support member 21 is moved by the link mechanism 29A as described above, the arrangement pitch of the feed blades 20 fixed at a constant inclination angle can be changed, and the pitch can be changed. It is determined by the amount of movement of the screw shaft 31 in the feed blade adjusting means 30. If the optimum condition of the inclination angle of the feed blade 20 is confirmed and set in advance, it can be adjusted by changing the arrangement interval, and the movable part can be adjusted. There is an advantage that it can be easily dealt with less.

(Third embodiment)
The perspective view showing the principal part of the heat processing apparatus of the incinerated ash which concerns on 3rd Embodiment is shown by FIG. FIG. 10 is an enlarged sectional view showing the support portion of the feed blade.

  The incineration ash heat treatment apparatus 1B of this embodiment is the same in basic configuration as the apparatus of the first embodiment, but differs in the support part structure of the feed blade 20 provided in the inner cylinder 4 and its adjustment part. It is. The feed blade 20 is different in that the arrangement interval is fixed and the inclination angle is adjustable. Accordingly, the same or the same configuration as that of the above-described embodiment is denoted by the same reference numeral as that of the above-described embodiment, and detailed description thereof is omitted.

  In the heat treatment apparatus 1B for incineration ash of this embodiment, the main shaft 10B that supports the inner cylinder 4 is configured in a box structure. The members constituting the main shaft 10B are two strip steel plates (for example, flat steel) having required dimensions in parallel between both end support disks 15, 15 '(only the rear end side is shown) of the inner cylinder 4. Hereinafter, the main member 11B) is connected by a connecting member 11c at a predetermined interval to form a box structure with a square cross section having a required dimension. The main shaft box structure 10B 'thus constructed is connected to the actual shafts 10a and 10b by the discs 12 and 12' at both ends in the axial direction and supported by bearings (not shown), and at the actual shaft 10a. The rotating force from the power unit is transmitted so that both end support disks 15 and 15 'are attached. In other words, a portion of the main shaft 10B located inside the inner cylinder 4 is formed in a box structure.

  A large number of feed blades 20 are arranged on both sides of the box structure portion 10B ′ of the main shaft in the axial direction at a preset pitch. The feed blades 20 are attached to the support shaft 23 through the circular seat plate 23a at the center of the trunk portion. The support shaft 23 that supports the feed blade 20 is a shaft support hole that is disposed in the main member 11B of the box structure portion 10B ′ constituting the main shaft 10B so as to cross the shaft center at a predetermined interval in the axial direction. The outer peripheral edge of the circular seat plate 23a is movably held by a retaining metal fitting 24 at a portion outside the rotational range of the feed blade 20. Note that the support shafts 23 of the feed blades 20 arranged on both sides of the main shaft 10B are arranged substantially coaxially at each position, and rotate individually on the left and right.

  The feed blade 20 has a length slightly longer than the diameter of the inner cylinder 4 and a width dimension (dimension in the radial direction of the inner cylinder 4) of about a half of the radius of the inner cylinder (as in the above-described embodiment). However, it is not limited to this, and is a plate material having an appropriate thickness, and both longitudinal ends are formed in an arc shape corresponding to the inner periphery of the inner cylinder. Each feed blade 20 has a base end portion of a link 28B attached to the support shaft 23 inside the main members 11B and 11B in the box structure portion 10B ′ of the main shaft, and a distal end portion of each link 28B. Are connected to a long rod 36 arranged in parallel to the main shaft 10B, and the base end of the rod 36 is connected to the support disc 15 on the rear end side of the inner cylinder 4 and the connecting bracket of the feed blade adjusting means 30 The tilt angle is adjusted by being connected to 32. The reference tilt angle of the feed blade 20 is connected to the rod 36 by attaching the base end of the link 28B to the support shaft 23 in a state where the posture is set at the initial setting. The links 28B and the rods 36 are disposed on both sides of the main shaft 10B in opposite directions so that the links 28B and 28B are opposed to each other and symmetrically provided on the support disk 15 side via the rods 36 and 36. It is connected to each feed blade adjusting means 30 and is adjusted for each compartment partitioned by the partition wall body 16.

  Further, in the box structure portion 10B ′ of the main shaft, the horizontal connecting member 11c that connects the main members 11B and 11B in the lateral direction in order to arrange the link 28B for adjusting the inclination angle of the feed blade 20 is the feed The upper and lower parts of the main members 11B and 11B are connected in the middle between the positions where the support shafts 23 of the blades 20 are disposed, thereby forming a box structure. Therefore, it does not prevent the link 28B from protruding from the main shaft 10B and operating.

  As shown in FIGS. 9 and 10, the partition wall body 16B that bisects the inner cylinder 4 in this embodiment is bolted so that the partition plates 16b and 16b can be attached to and detached from the outer surface of the main member 11B of the main shaft. Installed. The feed blade 20 is disposed along the outer surface of the partition wall body 16B thus provided.

  In the present embodiment configured as described above, in order to adjust the residence time of the ash to be treated fed into the inner cylinder 4, a large number of feed blades 20 arranged at a constant interval are used as support shafts. 23 are connected in series by a rod 36 via a link 28B and can be adjusted externally by a feed blade adjusting means 30. Therefore, the rod 36 is pushed and pulled by a screw shaft 31 of the feed blade adjusting means 30 to feed it. By changing the inclination angle of the blade 20, the movement of the ash to be treated by the rotation of the inner cylinder 4 can be controlled. In short, if the rod 36 is pushed by the screw shaft 31 of the feed blade adjusting means 30, the link 28B to be connected is displaced in the standing direction, and the support shaft 23 is rotated accordingly, and the inclination angle of the feed blade 20 is increased. It can be displaced in the direction of standing up. If it does so, the movement distance of the to-be-processed ash sent will become short and residence time will be lengthened. On the contrary, when the rod 36 is pulled by the screw shaft 31 of the feed blade adjusting means 30, the link 28B is displaced in the down direction, and the feed blade 20 is also rotated in the down direction and the inclination angle becomes small. The travel distance of the treated ash is increased and the residence time is shortened.

  According to this embodiment, the feed blades 20 arranged at fixed positions as described above are configured so that the inclination angle thereof can be adjusted simultaneously by the connection configuration of the link 28B and the rod 36. Since the inclination angle can be adjusted by the amount of movement of the screw shaft 31 in the blade adjusting means 30 and the optimum condition can be selected, the function can be simplified and the object can be achieved.

  In each of the embodiments described above, a large number of feed blades arranged in the inner cylinder, its supporting structure and the adjusting structure are supported around the main shaft, and directly with the inner cylinder. Since they are not connected, they can be taken out from the inside of the inner cylinder and disassembled and assembled by uncoupling the connecting portion of the main shaft and the inner cylinder and the support disk. Therefore, when disassembling at the time of maintenance, it can be taken out from the inner cylinder and inspected and repaired outside. Further, since the feed blade can be disassembled and assembled for each unit, if there is damage, the parts can be easily replaced, and the effect of facilitating maintenance can be obtained.

1 is a longitudinal sectional view showing an overview of a heat treatment apparatus for incineration ash according to a first embodiment of the present invention. The expanded sectional view in one division of the principal part of 1st Embodiment Expanded sectional view of the other compartment AA sectional view (a) in FIG. 2, a front view (b) of a feed blade support main part, and a sectional view (c) thereof. Exploded perspective view of the main part The perspective view showing the principal part of the heat processing apparatus of the incineration ash which concerns on 2nd Embodiment. Cross-sectional view of the heat treatment apparatus seen in the BB direction of FIG. Exploded perspective view of the main part The perspective view showing the principal part of the heat processing apparatus of the incineration ash which concerns on 3rd Embodiment. Enlarged sectional view showing the support part of the feed blade Overview of conventional heat treatment equipment for incineration ash

Explanation of symbols

1, 1A, 1B Heat treatment device 3 Outer cylinder 4 Inner cylinder 5 Space 7a Heater 8 Supply port of ash to be treated 9 Spiral blade 10, 10B Main shaft 11 Square member 11B Main member 12, 12 'Disc 15, 15' Support Discs 16, 16B Partition wall body 20 Feed blade 21 Support member 21A Fixed support member 23, 23A Feed shaft support shaft 23a Circular seat plate 25 Closing piece 28, 28 ', 28B Link 28A First link 29, 29A Link mechanism 30 Feed blade adjusting means 31 Screw shaft 32 Connecting bracket 36 Rod 40 Inlet for treated ash 41 Opening wall 50 Discharge port

Claims (15)

An inner cylinder is rotatably arranged coaxially in a stationary outer cylinder, and the treated ash supplied to one end of the space between the inner and outer cylinders by a spiral blade attached along the outer periphery by rotation of the inner cylinder After moving to the other end in the direction, it is fed into the inner cylinder, moved in the reverse direction with the feed vanes arranged inside the inner cylinder, and discharged from the inner cylinder end to the outside, from the outside of the outer cylinder In a heat treatment apparatus for incinerated ash that heats the treated ash by applying heat,
The main shaft for supporting the inner cylinder, on both sides along the partition wall bisecting the inside inner tube in the diameter direction, a number of feed blades at a desired pitch in the axial direction is rotatably supported to the intermediate portion to the support member tilting is capable disposed, these support shafts of the feed blades is connected to a series by link the partition wall inside, at the feed blade adjusting means provided at one end of the inner cylinder, said support member through said link An incineration ash heat treatment apparatus, wherein the inclination angle and arrangement pitch of the feed blades are adjustable by moving in the axial direction, and the residence time of the ash to be treated in the inner cylinder is adjustable. . An inner cylinder is rotatably arranged coaxially in a stationary outer cylinder, and the treated ash supplied to one end of the space between the inner and outer cylinders by a spiral blade attached along the outer periphery by rotation of the inner cylinder After moving to the other end in the direction, it is fed into the inner cylinder, moved in the reverse direction with the feed vanes arranged inside the inner cylinder, and discharged from the inner cylinder end to the outside, from the outside of the outer cylinder In a heat treatment apparatus for incinerated ash that heats the treated ash by applying heat,
On the main shaft supporting the inner cylinder, a number of feed blades are arranged at both sides along a partition wall that bisects the inside of the inner cylinder in the diametrical direction with a required pitch in the axial direction, with an intermediate portion fixed to the support member. The support members for the feed blades are connected in series by a link inside the partition wall body, and the support member is moved in the axial direction via the link by the feed blade adjusting means provided at one end of the inner cylinder. is allowed is adjustable arrangement pitch of the feed vanes, heat treatment apparatus ash, characterized in that the residence time of the processed ash is configured adjustably in the inner cylinder. The partition wall body that bisects the inside of the inner cylinder in the diametrical direction is composed of two partition plates fixed in parallel from the center to both sides at a required interval, and the link is inside the two partition plates. The incineration ash heat treatment apparatus according to claim 1 or 2, wherein the heat treatment apparatus is configured to be disposed.   The heat treatment apparatus for incineration ash according to claim 1 or 2, wherein the main shaft supporting the inner cylinder has four square members arranged in parallel at a predetermined interval with respect to the inner cylinder axis. .   The support member on which the feed blade is supported is a support member adjacent to the feed blade adjusting means on the outside straddling two square members arranged vertically on the left and right of the axis of the main shaft. The support blade is supported so as to be slidable in the axial direction, and the main portion of the feed blade is fixed to a support shaft that is rotatably provided at a central portion of these support members in a direction orthogonal to the main axis. The heat treatment apparatus for incineration ash according to 1.   The support shaft that is rotatably supported on the support member fits the feed blade mounting seat portion into a stepped recess provided in the support member, and the outer peripheral portion thereof is rotatably held by a retaining piece. The incineration ash heat treatment apparatus according to claim 5, which is configured.   The support member for supporting the feed blade is a shaft excluding the support member adjacent to the feed blade adjusting means on the outside straddling the two square members arranged vertically on the left and right sides of the main shaft. The incineration ash heat treatment apparatus according to claim 2, wherein the heat treatment apparatus is configured to be slidable in a direction and to connect the pair of left and right support members to each other via a support shaft that penetrates the space portion of the main shaft.   The link that connects the support members of the feed blades is configured to be pivotally supported by the support shaft on the support shaft and pin-connected to links that connect at both ends at an equal distance from the support shaft. The heat treatment apparatus for incineration ash according to 2. In the space portion generated in the axial direction between the square members constituting the main shaft, a closed piece of a required length that fits into the space portion on the support member of the feeding blade attached to the outer surface of the square member but closed piece of the respective support member adjacent mounted so as Kasaneau part mutually to claim 4, wherein the space portion by respective support members attached closing piece is formed in the closed state The incineration ash heat treatment equipment described. An inner cylinder is rotatably arranged coaxially in a stationary outer cylinder, and the treated ash supplied to one end of the space between the inner and outer cylinders by a spiral blade attached along the outer periphery by rotation of the inner cylinder After moving to the other end in the direction, it is fed into the inner cylinder, moved in the reverse direction with the feed vanes arranged inside the inner cylinder, and discharged from the inner cylinder end to the outside, from the outside of the outer cylinder In a heat treatment apparatus for incinerated ash that heats the treated ash by applying heat,
The main shaft that supports the inner cylinder is arranged on both sides along the partition wall that bisects the inside of the inner cylinder in the diametrical direction, with a number of feed blades tilting at the required pitch in the axial direction, with the middle part pivotally attached. is, the support shaft of the feed blades is connected to a series by link the partition wall inside, at the feed blade adjusting means provided at one end of the inner cylinder, the inclination angle of said feed blade through said link A heat treatment apparatus for incinerated ash, which is configured to be adjustable so that the residence time of the treated ash in the inner cylinder is adjustable.   The main shaft has a box structure in which a pair of belt-like plate members arranged in parallel at a required interval on the left and right sides of the shaft center are connected by connecting members at a required interval in the vertical position, and the main shaft is connected at a required interval in the axial direction. The incineration ash heat treatment apparatus according to claim 10, wherein the feed blades are attached to the left and right outer sides of a support shaft disposed across the main shaft.   The feed blades are arranged at the inner cylinder end by pivotally attaching the distal ends of links, each of which is attached to the support shaft to the support shaft inside the partition wall body, to one operation rod. The heat treatment apparatus for incinerated ash according to claim 10, wherein the inclining angle of the feeding blade can be adjusted by interlocking with the operating rod by an adjusting means. The heat treatment apparatus for incinerated ash according to claim 11 , wherein the space portion formed above and below the main shaft of the box structure is configured to be separated from the movement space of the ash to be treated by attaching a partition plate constituting the partition wall body to the main shaft. .   The feed blade adjusting means is a screw shaft that is inserted from the outside so as to be able to advance and retract perpendicularly to the face plate that closes the inner cylinder end, and is supported by the inner end of the screw shaft to cause the feed blade to be inclined or moved. The incinerated ash according to any one of claims 1, 2 and 10, comprising a connecting piece movably connected to one end of a link structure and a support member for moving and fixing the screw shaft in the axial direction. Heat treatment equipment. The treated ash inlet from the outside provided at the end of the inner cylinder into the interior, according to claim 1, 2 or 10 aperture wall projecting in a tubular body side along the opening edge is provided Incineration ash heat treatment equipment.

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