JPH0619948Y2 - Municipal waste incinerator - Google Patents

Description

TECHNICAL FIELD The present invention relates to a municipal solid waste incinerator, and more particularly to a blow-through prevention structure between a side wall and a stoker.

2. Description of the Related Art A conventional municipal solid waste incinerator is provided with a stoker 1 forming a combustion bed therein, as shown in FIGS. 3 to 4, for example. The stalker 1 is formed by alternately arranging the movable parts 2 and the fixed parts 3, and the movable part 2 and the fixed parts 3 are inclined with respect to the vertical direction and are arranged so as to overlap each other. Further, the movable portion 2 and the fixed portion 3 are formed by connecting a plurality of rostruls 4. And
The fixed portion 3 is supported by the main body fixing frame 6 via the connecting rod 5, and the movable portion 2 is supported by the moving table 8 via the movable connecting rod 7. In addition, the movable table 8 is connected to the drive shaft via the arm 9.
A cylinder device 11 is connected to the drive shaft 10. Then, by driving the cylinder device 11,
The movable part 2 is adapted to move in and out in parallel with the fixed part 3. Further, a spacer loss 12 is provided at the ends of the fixed portion 3 and the movable portion 2, and a side plate 13 is arranged in pressure contact with the spacer loss 12.
Further, the side plate 13 is fixed to a support shaft 15 which is arranged to pass through a furnace side wall 14 of the incinerator and which can freely move in and out, and the support shaft 15 is attached by a spring 16 in the arrangement direction of the rostles 12. It is energized. And, a seal portion 17 for sealing between the support shaft 15 and the furnace side wall 14 is provided on the outer side of the furnace side wall 14,
Between the side plate 13 and the furnace side wall 14, the side plate
It is sealed by a part of the furnace side wall 14 which is in sliding contact with the upper end of 13.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention By the way, in the above-described configuration, in order to satisfactorily combust the dust placed on the stoker 1, the combustion air A ventilated from the lower part to the upper part of the stoker 1 is It must be uniformly supplied over the entire surface of the stoker 1, and if local blow-by occurs, the air balance is disturbed and combustion is hindered. However, in the above configuration, since the side plate 13 and the spacer rostrut 12 are pressed against each other in a flat plane, the sealability is poor, and particularly the sealability is maintained against thermal deformation of the side plate 13 and the spacer rostrut 12 during combustion. Was difficult. For this reason, there is a problem that a local blow-through B of the combustion air occurs, the air balance is lost, and combustion is hindered.

The present invention solves the above problems, and an object of the present invention is to provide an incinerator for municipal solid waste that can prevent blow-through of combustion air between a sidewall and a stoker.

Means for Solving the Problems In order to solve the above problems, the present invention provides a stoker that forms a combustion bed, and a fixing portion that has an inclined surface that faces obliquely upward,
The side plate formed by alternately arranging the movable part that goes out and along the inclined surface of the fixed part and sealing between the side end of the stalker and the furnace side wall is the side end face of the fixed part and the movable part. In an incinerator for municipal solid waste that is press-fitted to the side of the fixed part and the movable part, a convex part having a ridge line along the moving direction of the movable part is provided on the side end faces of the fixed part and the movable part, and It is provided on the side end surface of the plate, and is formed so that the convex surface of the fixed portion and the movable portion and the concave surface of the side plate are in pressure contact with each other.

With the above configuration, since the side plate, the movable portion and the fixed portion are in pressure contact with the concave surface and the convex surface, in the contact portion between the side end surface of the side plate and the side end surface of the movable portion and the fixed portion, The straightness in the ventilation direction of the combustion air, that is, the direction from the bottom to the top of the stoker is eliminated, the sealability against combustion air is improved, local blow-through of combustion air is prevented, and good combustion is maintained. It

Embodiment An embodiment of the present invention will be described below with reference to the drawings. 1 to 2, the stoker that forms the combustion bed of the incinerator
The movable part 22 and the fixed part 23 are arranged alternately, and the movable part 22 and the fixed part 23 are arranged obliquely upward, and the movable part 22 is arranged along the inclined surface of the fixed part 23. It is provided so that it can move in and out freely. The movable portion 22 and the fixed portion 23 are formed by connecting a plurality of rostruts 24 with bolts 25. However, only the outermost rostr 24a is not connected to the adjacent rostr 24b, and a free surface is formed between them. The fixed portion 23 is supported by the main body fixing frame 27 via the connecting rod 26, and the movable portion 22 is the movable connecting rod.
It is supported by a movable table 30 via 29. In addition, the mobile platform
The arm 30 is connected to the drive shaft 32 via the arm 31, and the movable portion 22 is arranged to move in and out in parallel with the fixed portion 23 as the drive shaft 32 moves. A spacer loss 33 is provided at the end of the fixed portion 23 and the movable portion 22, and the end surface of the spacer loss 33 corresponding to the furnace side wall 34 of the incinerator is arranged along the moving direction of the movable portion 22. A convex portion 35 having a ridgeline is provided. In addition, a side plate 37 having a concave portion 36 that fits into the convex portion 35 is retained on the furnace side wall 34 via a support shaft 38 so that the side plate 37 can freely move in and out. A spring 39 that presses the side plate 37 against the spacer loss 33 is provided.
For this reason, the side plate 37 and the spacer loss 33
Are in pressure contact with the concave surface and the convex surface. In addition, the top of the convex portion 35 of the spacer loss 33 and the concave portion of the side plate 37
A packing 40 is interposed between the valley bottoms of 36. The gap between the support shaft 38 and the furnace side wall 34 is sealed by a seal portion 41 surrounding the support shaft 38 and arranged outside the furnace side wall 34.

Hereinafter, with the above configuration, the side plate 37 and the movable portion 22
And since the spacer loss 33 of the fixed portion 23 is in pressure contact with the concave surface and the convex surface, in the contact portion of the side end surface of the side plate 37 and the side end surface of the spacer loss 33, the ventilation direction of the combustion air 42, that is, The straightness in the direction from the lower side to the upper side of the stalker 21 is eliminated, the sealability with respect to the combustion air 42 is improved, local blow-through of the combustion air 42 is prevented, and good combustion is maintained. Also, the Patskin 40
Thereby, the sealing property is further improved. Further, since the deformation of the stalker 21 due to the combustion heat is absorbed by the free surface provided between the outermost rostr 24a and the adjacent rostr 24b, the side plate 37 and the spacer rostr 33
The pressure contact is not hindered by the expansion of the member due to the heat of combustion.

Effects of the Invention As described above, according to the present invention, the side plate and the movable portion and the fixed portion are brought into pressure contact with the concave surface and the convex surface to improve the sealability against combustion air and locally. It is possible to prevent blowout of various combustion air.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of the present invention, FIG. 2 is a diagram showing the shapes of the spacer loss and side plate in FIG. 1, and FIG. 3 is an overall configuration diagram of a conventional municipal solid waste incinerator. FIG. 4 is a view on arrow XX in FIG. 21 ... Stalker, 22 ... Movable part, 23 ... Fixed part, 24 ... Lostl, 33 ... Spacer Lostl, 35 ... Convex part, 36 ... Recessed part, 37
… Side plates.

Claims (1)

[Scope of utility model registration request] 1. A stoker that forms a combustion bed is formed by alternately arranging a fixed portion having an inclined surface directed obliquely upward and a movable portion that retreats along the inclined surface of the fixed portion. In a municipal solid waste incinerator in which a side plate for sealing between the side end portion and the side wall of the furnace is provided in pressure contact with the side end surfaces of the fixed portion and the movable portion, the side end surfaces of the fixed portion and the movable portion,
A convex portion having a ridge line along the moving direction of the movable portion is provided, and a concave portion that fits into the convex portion is provided on the side end surface of the side plate, and the convex portion surface of the fixed portion and the movable portion and the concave surface of the side plate are provided. A municipal solid waste incinerator characterized by being formed so as to be pressed against each other.