TWI687628B - Slag ash separation device and ash discharge system - Google Patents

Abstract

The slag ash separating device of the present invention includes: a housing provided with an inlet into which slag ash flows, a first outlet for discharging slag ash below a predetermined size in the slag ash, and slag ash exceeding a predetermined size in the slag ash That is, the second outlet from which the bulk slag is discharged; the separator, which separates the bulk slag from the slag ash; the opening and closing door, which is rotatably supported by the casing on one side, and can close the second outlet, receiving The separator separates and moves the large slag from the second outlet; a support body that supports at least a part other than one side of the opening and closing door; and a buffer device that is interposed between the opening and closing door and the support body.

Description

Slag ash separation device and ash discharge system

The present invention relates to a slag ash separation device for separating large lumps from slag ash discharged from the bottom of a boiler and an ash discharge system provided with the same.

Conventionally, a coal-fired boiler equipped with a furnace that burns pulverized coal into coal has been known. Part of the particles of coal combustion ash produced in the furnace of the boiler melt and condense with each other to become a porous block (slag ash) and fall to the bottom of the furnace.

As a method of discharging slag ash from the bottom of the hearth, there is known a water-sealed conveyor method in which the slag ash is continuously discharged by using a water-sealed chain-pull conveyor provided at the bottom of the furnace, or a use installation A dry slag conveyor method in which the dry slag conveyor at the bottom of the furnace discharges continuously or intermittently.

In addition, if the coal combustion ash melted in the furnace of the boiler adheres to the heat pipe or wall provided in the furnace, it will deposit and solidify to become a large slag (hereinafter referred to as "large slag") . When the massive slag becomes large to a certain degree, it will fall due to its own weight and vibration. The size of the bulk slag is longer than 1m on the long side. If such massive slag falls directly on the conveyor, the conveyor may be damaged due to the impact, or the conveyor may be blocked by large pieces.

Therefore, in the slag conveying device described in Patent Document 1, a comb-shaped removal plate that receives slag ash with a larger particle size and passes slag ash with a smaller particle size is provided above the conveyor, so that The slag ash with larger diameter drops directly on the conveyor. The slag ash received by the removal plate is guided to the slag inlet of the cooling tank storing cooling water by the tilt of the removal plate. The slag inlet of the cooling tank is provided with an opening and closing door which is suspended and supported so as to be easily opened by pressing.

Prior technical literature

Patent Literature

Patent Literature 1: Japanese Patent Laid-Open No. 2015-148401

In Patent Document 1, the slag ash with a larger particle size separated from the slag ash with a smaller particle size by the removal plate rolls on the removal plate by its own weight, and is opened by pressing the opening and closing door by itself The cooling tank drops. In response to this, the inventors of the present case have studied the use of an opening and closing door to temporarily receive slag ash having a larger particle size (ie, bulky slag) separated from slag ash having a smaller particle size.

It is assumed that if a large block of slag moving toward the opening and closing door collides with the opening and closing door, the opening and closing door will be momentarily impacted. The hinge supporting the opening and closing door may be damaged due to the impact load. In addition, if the cross-sectional area of a member (such as a pedestal, etc.) that supports the opening and closing of the door is increased to block the impact load, the overall size of the device is increased, which violates the requirement for space saving.

The present invention was made in view of the above circumstances, and its purpose is to mitigate large-block slag in a slag-ash separation device for separating large-block slag from slag ash discharged from the bottom of the boiler and an ash discharge system provided with the same The impact applied to the opening and closing door when it collides with the closing door.

The slag ash separation device according to one aspect of the present invention is characterized by having: a casing provided with an inlet into which slag ash discharged from the bottom of the furnace hearth flows in; and a first step for discharging slag ash below a predetermined size in the slag ash 1 outlet, and the second outlet that discharges the slag ash that exceeds the predetermined size in the above-mentioned predetermined size, that is, the bulk slag; the separator is provided in the housing and separates the bulk slag from the slag ash; The door is opened and closed, supported by the casing rotatably on one side, and the second outlet can be closed to receive the bulk slag separated by the separator and moved to the second outlet; the support body supports At least a part other than the one side of the opening and closing door; and a buffer device interposed between the opening and closing door and the support.

In addition, the ash discharge system according to one aspect of the present invention is characterized in that it discharges slag ash from the bottom of the furnace hearth of the boiler, and is provided with a conveyor device that removes the slag ash from below the bottom of the furnace; And the slag ash separation device, which is provided in the flow path of the slag ash from the furnace bottom to the conveyor device.

According to the slag ash separation device and the ash discharge system described above, when the massive slag moving toward the second outlet collides with the opening and closing door, the cushioning device absorbs the kinetic energy of the collision, so the impact applied to the opening and closing door can be reduced.

It may also be provided that the slag ash separation device is provided with a rod that opposes the opening and closing door to prevent rotation of the opening and closing door, and the lever includes the buffer device.

In this way, the damping device is integrally included in the lever that locks the opening and closing door by preventing the rotation of the opening and closing door. Therefore, compared with the case where the lever and the damping device are independently provided, the lever can be prevented from being damaged and the number of parts can be reduced.

Furthermore, the lever may have a base rotatably supported by the support, a head abutting the opening and closing door, and the buffer device provided between the base and the head.

Alternatively, the lever may have a base rotatably supported by the support body, and the buffer device attached to the opening and closing door so as to be able to butt with the base in a state where the opening and closing door is closed.

In this way, the lever or its base is rotatably supported by the support, and therefore, the locking and unlocking of the opening and closing door can be easily switched by rotating the lever or its base.

Alternatively, in the slag ash separation device, the buffer device includes a spring seat, a plurality of coil springs stacked on the spring seat, and a cylindrical body that holds the plurality of coil springs.

In the buffer device constructed as described above, the degree of buffering can be easily adjusted by increasing or decreasing the number of coil springs. In addition, since the large block slag of high temperature abuts on the opening and closing door, the buffer device also becomes high temperature, but the buffer device may have heat resistance to the high temperature.

According to the present invention, in the slag ash separating device that separates the massive slag from the slag ash discharged from the bottom of the boiler and the ash discharge system provided with the same, the large slag can be relieved from colliding with the closed opening and closing door. The impact of the door.

1‧‧‧ Ash discharge system

2‧‧‧ Funnel

3‧‧‧ Separating device

4‧‧‧Conveyor device

8‧‧‧Locking mechanism

10‧‧‧Boiler furnace

21‧‧‧ Input adjustment device

30‧‧‧Housing

31‧‧‧ entrance

32‧‧‧Chute

33‧‧‧separator

33a‧‧‧Guide plate

33b‧‧‧grid

35‧‧‧ Exit 2

36‧‧‧Exit 1

37‧‧‧Support component

38‧‧‧Open and close the door

38a‧‧‧ abutment block

38b‧‧‧Refractory

39‧‧‧mandrel

40‧‧‧mandrel

41‧‧‧Housing

42‧‧‧Conveyor Transport Department

61‧‧‧Container

62‧‧‧Outer cover

63‧‧‧Export

71‧‧‧1st bottom

72‧‧‧2nd bottom

80‧‧‧

81‧‧‧Head

81a‧‧‧Abutment surface

82‧‧‧Buffer device

82a‧‧‧Outer cylinder

82b‧‧‧coil spring

82c‧‧‧Spring seat

82d‧‧‧Guide plate

82e‧‧‧Inner tube

83‧‧‧Base

83a‧‧‧Convex seat

FIG. 1 is a diagram showing a schematic configuration of an ash discharge system including a slag ash separation device according to an embodiment of the present invention.

Fig. 2 is an enlarged view showing a schematic configuration of a slag ash separation device.

Fig. 3 is a diagram showing an example of a lock lever.

4 is a graph showing the relationship between the impact load acting on the opening and closing door and the braking distance of the cushioning device.

FIG. 5 is a diagram showing a first modification of the lock lever.

FIG. 6 is a diagram showing a modification 2 of the lock lever.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. First, referring to FIG. 1, a schematic configuration of an ash discharge system 1 including a slag ash separation device (hereinafter, simply referred to as "separation device 3") according to an embodiment of the present invention will be described.

The ash discharge system 1 removes the slag ash (slag) that has fallen on the bottom of the furnace 10 of the boiler from the furnace 10 of the boiler. The ash discharge system 1 is provided with a hopper 2, a separation device 3, and a conveyor device 4 from the upstream side to the downstream side along the traveling direction of the slag ash movement. However, the funnel 2 can also be omitted according to the scale of the ash discharge system 1.

The hopper 2 is a slag ash falling from the boiler hearth 10 and discharged to the downstream side (that is, the separation device 3). The funnel 2 is arranged below the boiler hearth 10 and is connected to the bottom of the boiler hearth 10.

The separation device 3 receives the slag ash discharged from the hopper 2, separates and recovers the slag ash exceeding a predetermined size (hereinafter, referred to as "bulk slag") from the mainstream of the slag ash, and separates the remaining slag ash The person discharged to the downstream side (that is, the conveyor device 4). The structure of the separation device 3 will be described in detail later.

In the slag ash flow path between the hopper 2 and the separation device 3, an input amount adjustment device 21 is provided, which can switch the input and stop of the slag ash to the separation device 3, or adjust the input to the separation device 3 The amount of slag ash. The input amount adjusting device 21 is composed of, for example, a shutter and its driving mechanism.

The conveyor device 4 cools the slag ash passing through the separation device 3 while facing the downstream side. The conveyor device 4 includes a casing 41 and a conveyor conveying section 42 built in the casing 41.

In the ash discharge system 1 configured as described above, the slag ash dropped to the bottom of the furnace chamber 10 of the boiler flows into the separation device 3 through the funnel 2. The separation device 3 separates the bulk slag from the main stream of slag ash, and the main stream of slag ash from which the bulk slag is removed flows into the machine device 4. The slag ash flowing into the conveyor device 4 is conveyed downstream by the conveyor conveying section 42. The slag ash carried out from the bottom of the boiler hearth 10 by the conveyor device 4 in this way is crushed into fine powder by a pulverizer (not shown), or recovered to a recovery hopper (not shown).

Next, the configuration of the separation device 3 will be described in detail using FIG. 2. FIG. 2 is an enlarged view showing the schematic structure of the separation device 3.

An inlet 31 of the housing 30 of the separating device 3 is connected to the bottom of the funnel 2. The housing 30 has a funnel shape with a smaller cross-sectional area as it goes downward. Refractory material with impact resistance can be pasted inside the casing 30.

The casing 30 is provided with openings 31 into which slag ash flows in, a first outlet 36 where the slag ash flows out toward the conveyor device 4, and a second outlet 35 through which the bulk slag is discharged.

The housing 30 has a first bottom portion 71 inclined from the horizontal, and a second bottom portion 72 inclined from the horizontal direction opposite to the first bottom 71. The first bottom 71 and the second bottom 72 cross at the bottom of the housing 30, whereby the bottom of the housing 30 becomes narrower toward the front. The first outlet 36 opens at the first bottom 71. In addition, the second outlet 35 (bulk gate) opens at the second bottom 72.

A separator 33 is provided at the first outlet 36 of the housing 30. In this embodiment, the separator 33 is provided in the housing 30, but the separator 33 may also be provided outside the first outlet 36 of the housing 30. The main flow of slag ash flowing into the casing 30 falls onto the separator 33. The separator 33 allows passage of slag ash below a predetermined size, and prevents passage of slag ash exceeding a predetermined size (ie, bulky slag). The upper surface of the separator 33 is inclined 35 to 60 degrees from the horizontal in such a way that the falling slag ash is rolled on the screen.

The separator 33 is composed of, for example, a plurality of grid screen bars 33b arranged in parallel at an interval (screen) of 200 to 400 mm, and the upstream side of the grid screen bars 33b and the falling slag ash toward the grid screen bars 33b The guide plate 33a for inter-guide is comprised. In this embodiment, the slag ash that cannot pass through the separator 33, that is, the slag ash with the smallest side size larger than the screen becomes "large-block slag". However, the structure of the separator 33 and the size of the screen are not limited to the above.

The first outlet 36 of the housing 30 is connected to the inlet of the chute 32. The outlet of the chute 32 is connected to the casing 41 above the conveyor carrying part 42 of the conveyor device 4. By this, the slag ash passing through the separator 33 is conveyed to the conveyor device 4 through the chute 32.

The bulky slag that cannot pass through the separator 33 rolls down on the upper surface of the separator 33 and reaches the second outlet 35 located at the destination where the separator 33 rolls out. The second exit 35 is provided with an opening/closing door 38 that can open and close the second exit 35. The opening and closing door 38 is always closed by the lock mechanism 8.

The large slag that reaches the second exit 35 can use a weight sensor that detects the change in the load applied to the opening and closing door 38, an object detection sensor that detects objects in the second exit 35, and images from the second exit 35 At least one or more types of detection mechanisms, such as image sensors (both not shown) that detect large slag, are used for detection. Alternatively, the large slag reaching the second outlet 35 can be recognized through an inspection window (not shown) provided in the housing 30. If the operator confirms that the large slag has reached the second outlet 35, the operator opens or closes the door 38 manually or automatically to open the second outlet 35. However, the opening/closing door 38 can also be regularly controlled in such a way that it automatically switches at every predetermined time regardless of the presence or absence of a large amount of slag.

As shown in FIG. 1, the second outlet 35 is surrounded by a cover 62. When the second outlet 35 is opened, the inside of the housing 62 is communicated with the inside of the housing 30 of the separation device 3. Inside the outer cover 62 and below the second outlet 35, there is provided a container 61 for accommodating the massive slag dropped through the second outlet 35. The container 61 is carried in and out of the outer cover 62 through the outlet 63.

In the separation device 3 configured as described above, the bulk slag that cannot pass through the separator 33 rolls down on the upper surface of the separator 33 and reaches the second outlet 35. The opening/closing door 38 of the second outlet 35 is closed, and the rolled massive slag collides with the opening/closing door 38, and the massive slag received by the opening/closing door 38 is temporarily held in the separating device 3. When the massive slag collides with the opening and closing door 38, a large collision load is momentarily applied to the opening and closing door 38. It is also assumed that the collision load exceeds 100 tons. Therefore, in addition to the function of preventing the rotation of the opening and closing door 38, the locking mechanism 8 also has the function of reducing the collision load applied to the opening and closing door 38.

As shown in FIG. 2, the second outlet 35 of this embodiment is a rectangular opening, and the opening and closing door 38 is also formed in a rectangular plate shape to block the opening. However, the shapes of the second outlet 35 and the opening and closing door 38 are not limited to rectangular shapes, and may be trapezoidal or circular, for example. A refractory material (or heat insulating material) 38b is pasted on the inside of the opening and closing door 38. One side (upper side in this embodiment) of the opening and closing door 38 is rotatably supported by the housing 30 via a mandrel 39. The side (the lower side in this embodiment) of the opening and closing door 38 facing the above side is supported by the housing 30 via the locking mechanism 8. A plurality of lock mechanisms 8 are provided along the lower side of the opening and closing door 38. In addition, although not shown, in the case 30, in addition to the main body forming the flow path of the slag ash, the column that serves as a framework for supporting the main body or other elements also includes structural materials such as beams.

The locking mechanism 8 is composed of a locking lever 80 that presses between the opening and closing door 38 and the housing 30 in a manner to prevent the opening and closing door 38 from rotating, and an abutment block 38 a provided on the back of the opening and closing door 38.

The base end of the rod 80 is rotatably supported by the support member 37 provided in the housing 30 via the mandrel 40. In this embodiment, the housing 30 is used as an example of a support for the opening and closing door 38. However, for example, a cover 62 or a stacker (not shown) provided below the opening and closing door 38 may be used as the opening and closing door. 38 support.

In the locked opening and closing door 38, the front end of the lever 80 abuts on the abutment block 38a. In this way, the lever 80 is pressed between the contact block 38a of the opening and closing door 38 and the supporting member 37 of the housing 30 to prevent the opening and closing door 38 from rotating downward.

When the lock of the opening/closing door 38 is released, as shown by the two-dot chain line in FIG. 2, the lever 80 is rotated downward with the mandrel 40 as the center. As a result, the lever 80 deviates from the rotation orbit of the opening and closing door 38 about the mandrel 39, allowing the opening and closing door 38 to rotate.

FIG. 3 is a diagram showing an example of the lock lever 80. The rod 80 shown in FIG. 3 includes a head 81, a base 83, and a buffer device 82 that connects the head 81 and the base 83.

The head portion 81 has a plate shape, and has an abutment surface 81 a that abuts the abutment block 38 a of the opening and closing door 38. The contact surface 81a of the head 81 is planar, but as shown in FIG. 5, the contact surface 81a of the head 81 of the rod 80A may be curved. In the rod 80A, the contour of the contact surface 81a when viewed from the axial direction of the mandrel 40 has an arc shape centered on the mandrel 40, and the sliding surface of the contact block 38a where the contact surface 81a slides is A curved surface corresponding to the contact surface 81a. Thus, if the contact surface 81a of the head 81 of the rod 80A is curved, the head 81 can smoothly slide on the contact block 38a when the rod 80 rotates.

The base 83 has a boss 83a through which the mandrel 40 is inserted into the base end, and a buffer device 82 is connected to the front end.

The cushioning device 82 expands and contracts in a direction (hereinafter, referred to as "telescopic direction L") that approaches and departs between the head 81 and the base 83, and absorbs the kinetic energy of the impact acting on the rod 80. The buffer device 82 of the present embodiment includes an outer tube 82a coupled to the head 81, an inner tube 82e inserted concentrically into the outer tube 82a, accommodated between the outer tube 82a and the inner tube 82e, and stacked in the direction of expansion and contraction L A plurality of coil springs 82b, a spring seat 82c combined with the inner cylinder 82e, and a cylindrical guide plate 82d combined with the spring seat 82c. The guide plate 82d is joined to the front end of the base 83.

The outer cylinder 82a and the inner cylinder 82e are cylinders extending in the expansion and contraction direction L, and hold the plurality of coil springs 82b in a stacked state. When only the outer cylinder 82a can be used to maintain the layered state of the coil spring 82b, the inner cylinder 82e can be omitted. The outer cylinder 82a covers the inner cylinder 82e, a plurality of coil springs 82b, and spring seats 82c, and the end of the outer cylinder 82a in the direction of expansion and contraction is penetrated by a guide plate 82d, which becomes a guided portion that slides on the circumferential surface of the guide plate 82d . The outer cylinder 82a can be guided in the telescopic direction L with respect to the base 83 by being guided by the guide plate 82d.

According to the locking mechanism 8 configured as described above, when the massive slag collides with the locked opening and closing door 38 to apply an impact load (compressive load) in the telescopic direction L to the head 81 of the rod 80, the buffer device 82 contracts in the telescopic direction L, The coil spring 82b as an elastic body is elastically deformed, thereby absorbing the kinetic energy of the impact force. By this, the impact force acting on the opening and closing door 38 when the massive slag collides with the opening and closing door 38 is reduced.

FIG. 4 is a graph showing the relationship between the impact load acting on the opening and closing door 38 and the braking distance of the cushioning device 82. In the graph of FIG. 4, the vertical axis represents impact load, and the horizontal axis represents braking distance. In addition, the braking distance of the cushioning device 82 is the amount of deformation of the cushioning device 82 in the extension and contraction direction L when an impact load is applied.

As shown in FIG. 4, when an impact force K is applied to the locked opening and closing door 38, if the braking distance of the buffer device 82 is zero (that is, when it is assumed that the buffer device 82 does not exist in the lever 80 and the lever 80 is entirely a rigid body), then In theory, an impact load of K is applied to the opening and closing door 38. On the other hand, if the braking distance of the buffer device 82 is greater than zero, the impact load applied to the opening and closing door 38 can be reduced compared to K. The impact load applied to the opening and closing door 38 decreases as the braking distance of the cushioning device 82 increases.

As described above, the ash discharge system 1 of the present embodiment discharges slag ash from the bottom of the boiler hearth 10, and is provided with a conveyor device 4 that carries the slag ash out from below the bottom of the furnace, and is provided on the slag ash. The separation device 3 of the flow path from the furnace bottom to the conveyor device 4. The separation device 3 includes a housing 30 provided with an inlet 31 into which slag ash discharged from the bottom of the furnace chamber 10 flows in, a first outlet 36 for discharging slag ash below a predetermined size in the slag ash, and slag The second outlet 35 of the ash slag ash exceeding the predetermined size, that is, the discharge of the bulk slag; the separator 33, which is provided in the housing 30, and separates the bulk slag from the slag ash; the door 38 is opened and closed, which is aside Rotatably supported by the housing 30, and the second outlet 35 can be closed to receive the bulk slag separated by the separator 33 and moved to the second outlet 35; support (in this embodiment, the housing 30 (Both), which supports at least a part of the opening and closing door 38 other than the above side; and a buffer device 82, which is interposed between the opening and closing door 38 and the support.

In the separating device 3 described above, the opening and closing door 38 is supported by the housing 30 as an example of the support via the buffer device 82. Therefore, when the large-sized slag moving toward the second outlet 35 collides with the opening and closing door 38, the buffer device 82 Absorb the energy of collision movement. As a result, the impact applied to the opening and closing door 38 when the massive slag collides with the opening and closing door 38 can be reduced. In addition, since the impact applied to the opening and closing door 38 can be reduced, the load acting on the mandrels 39, 40 or the housing 30 supporting the opening and closing door 38 is reduced, and the size of the structural material of the housing 30 is avoided. Furthermore, in this embodiment, the opposite side of the side of the opening and closing door 38 that is supported by rotation is supported by the housing 30 via the buffer device 82, but the side of the opening and closing door 38 may be adjacent to the side that is supported by rotation The side or the surface of the opening and closing door 38 is supported by the support via the buffer device 82. That is, it is sufficient to support at least a part of the opening/closing door 38 except for one side supported by the rotation via the buffer device 82 to the support body.

In addition, the separating device 3 of the present embodiment is provided with a lever 80 that opposes between the opening and closing door 38 and the housing 30 so as to prevent the rotation of the opening and closing door 38, and the buffer device 82 is included in the lever 80.

In this way, since the damping device 82 is integrally included in the rotating lever 80 that locks the opening and closing door 38, compared with the case where the lever 80 and the damping device 82 are independently provided, the damage of the lever 80 can be prevented, and the number of parts can be reduced. Space saving can be sought.

Furthermore, in the separating device 3 of this embodiment, the rod 80 has a base 83 that is rotatably supported by the housing 30 as an example of a support, a head 81 that abuts the opening and closing door 38, and the base 83 Buffer device 82 between the head 81.

In this way, the lever 80 is rotatably supported by the support body, and therefore, the locking and unlocking of the opening and closing door 38 can be easily switched by rotating the lever 80.

Further, in the separating device 3 of the present embodiment, the buffer device 82 has a spring seat 82c, a plurality of coil springs 82b stacked on the spring seat 82c, and a cylinder that holds the plurality of coil springs 82b. The barrel may be at least one of the inner barrel 82e and the outer barrel 82a.

In the cushioning device 82 configured as described above, the degree of cushioning can be easily adjusted by increasing or decreasing the number of coil springs 82b. In addition, since the high-temperature massive slag contacts the opening and closing door 38, the buffer device 82 also becomes high temperature, but the buffer device 82 has heat resistance to the high temperature.

The preferred embodiments of the present invention have been described above, but the above-mentioned configuration may be modified as follows, for example.

In the above-described embodiment, the shock absorber 82 is absorbed by the elastic deformation of the coil spring 82b as an elastic body, but the structure of the shock absorber 82 is not limited to this. As the cushioning device 82, for example, a shock absorbing damper using oil or air, a buffer using a spring or a high elastic modulus resin, or the like can also be used.

Furthermore, in the above-described embodiment, the buffer device 82 is provided on the side of the housing 30 (support side), but the buffer device 82 may be provided on the side of the opening and closing door 38. For example, as shown in FIG. 6, the lever 80B may be divided between the buffer device 82 and the base 83, the buffer device 82 may be provided in the opening/closing door 38, and the base 83 may be provided in the housing 30. The lever 80B attaches the head 81 and the buffer device 82 to the opening and closing door 38 by combining the head 81 and the element 38 c of the opening and closing door 38. Furthermore, the head 81 may be omitted, and the buffer device 82 may be directly connected to the element 38c of the opening and closing door 38. In addition, the base 83 of the rod 80B is rotatably supported by a support member 37 provided in the housing 30 around the mandrel 40 (see FIG. 2 ). A flange 82f is provided at the end of the guide plate 82d of the buffer device 82, and a flange 83b is also provided at the end before the base 83.

In the rod 80B configured as described above, the flange 82f of the buffer device 82 and the flange 83b of the base 83 are in abutting state, and the rod 80B is pressed between the opening and closing door 38 and the housing 30, whereby the opening and closing of the lock can be locked and closed The rotation of door 38. That is, the cushioning device 82 is arranged on the opening and closing door 38 in such a manner that the flange 82f of the cushioning device 82 and the flange 83f of the base 83 can be butted in a state where the opening and closing door 38 is closed. Moreover, when the opening/closing door 38 is switched to unlocked, if only the base 83 is rotated around the mandrel 40, the flange 83b of the base 83 slides on the flange 82f of the buffer device 82, and immediately cancels their contact. The opening and closing door 38 allows downward rotation centering on the mandrel 39 (refer to FIG. 2 ).

In addition, the above description should be interpreted only as an example, and is provided for the purpose of teaching the best mode for carrying out the present invention to the manufacturer. The details of the structure and/or function can be substantially changed without departing from the spirit of the invention.

1‧‧‧ Ash discharge system

2‧‧‧ Funnel

3‧‧‧ Separating device

4‧‧‧Conveyor device

8‧‧‧Locking mechanism

10‧‧‧Boiler furnace

21‧‧‧ Input adjustment device

30‧‧‧Housing

31‧‧‧ entrance

32‧‧‧Chute

33‧‧‧separator

33a‧‧‧Guide plate

33b‧‧‧grid

35‧‧‧ Exit 2

36‧‧‧Exit 1

37‧‧‧Support component

38‧‧‧Open and close the door

38a‧‧‧ abutment block

39‧‧‧mandrel

40‧‧‧mandrel

41‧‧‧Housing

42‧‧‧Conveyor Transport Department

61‧‧‧Container

62‧‧‧Outer cover

63‧‧‧Export

71‧‧‧1st bottom

72‧‧‧2nd bottom

80‧‧‧

Claims (6)

A slag ash separating device, comprising: a casing, an inlet for inflow of slag ash discharged from the bottom of the furnace hearth of the boiler, a first outlet for discharging slag ash below a predetermined size in the slag ash, and the slag The second outlet of the ash slag ash that exceeds the predetermined size, that is, the bulk slag is discharged; the separator is provided in the housing and separates the bulk slag from the slag ash; the door is opened and closed and can be rotated by one side It is movably supported by the housing and can close the second outlet to receive the bulk slag separated by the separator and move to the second outlet; the support body supports at least one side other than the one side of the opening and closing door A part; and a buffer device between the opening and closing door and the support. The slag ash separation device according to claim 1, wherein a rod that is pressed against the opening and closing door and the support body in a manner to prevent rotation of the opening and closing door is provided, and the buffer includes the buffer device. The slag ash separation device according to claim 2, wherein the rod has a base rotatably supported by the support, a head abutting the opening and closing door, and the above-mentioned provided between the base and the head Buffer device. The slag ash separation device according to claim 2, wherein the rod has a base rotatably supported by the support, and is attached to the opening and closing door so as to be able to butt with the base while closing the opening and closing door The above buffer device. The slag ash separation device according to any one of claims 1 to 4, wherein the buffer device has a spring seat, a plurality of coil springs stacked on the spring seat, and a cylinder that holds the plurality of coil springs. An ash discharge system that discharges slag ash from the bottom of the furnace hearth, and is provided with: a conveyor device that removes the slag ash from below the bottom of the furnace; and slag according to any one of claims 1 to 5 The ash separation device is provided in the flow path of the slag ash from the furnace bottom to the conveyor device.

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