JPH05272737A - Stoker for refuse incinerator - Google Patents

Abstract

PURPOSE:To control the wear of contacting parts between the rocking end of a grate and refuse loading surface by a method wherein each of first and second grates is provided at its pivotally mounted end with a counterbalance for exerting an upward force on the rocking end thereof. CONSTITUTION:Each of first grates 13 is pivotally mounted to a fixing frame 17 via a shaft 20 in a manner wherein the grate is freely vertically rockable in refuse traveling direction and each of second grates 14 is pivotally mounted via a shaft 20 to a frame 18 freely reciprocally movable in the refuse traveling direction in a manner wherein the grate is freely vertically rockable in the refuse traveling direction. Each of the first and second grates 13 and 14 is provided at its pivotting end 27 with a counterbalance 28 for exerting an upward force on the rocking end 24 thereof, whereby the pressing force of the adjacent first and second grates acting against each other can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a plurality of first rostruls and a plurality of second rostruls, each along the traveling direction of dust.
While alternately arranged, each of the first roostles is pivotally connected to a fixed frame so as to be vertically swingable in the advancing direction of the dust, and each of the second roostles can be reciprocally moved in the advancing direction of the dust. A movable frame that is pivotally supported so as to be vertically swingable in the dust advancing direction, and the swing end portions of the first and second rostruts are respectively adjacent to the second in front of the dust advancing direction. The present invention relates to a garbage incinerator stoker mounted on the garbage mounting surface of the first roster.

[0002]

2. Description of the Related Art Conventionally, in the above-mentioned refuse incinerator stoker, the pivot shafts of the pivot connection portions of the first and second rostrus are
At the end portion on the side of the pivotal support portion, the end portion on the side of the longitudinal direction is packed as close as possible.

[0003]

However, according to the above-mentioned conventional structure, the pivot shafts of the pivot support connecting portions of the first and second rostrus are arranged in the longitudinal direction as much as possible at the end on the pivot support connecting portion side. Since dust is placed on the first and second rustles, the swinging ends of the trash are almost centered on the pivot axis in the direction in which the load is applied. It rotates without any resistance, and the load of dust acts on the dust mounting surface of the adjacent second or first roster as it is, and as a result, the pressure contact force of the rocking end portion with respect to the dust mounting surface is increased. When the movable frame reciprocates in the advancing direction of dust, the frictional force between the swinging end and the dust mounting surface increases, and the swinging end and the dust mounting surface become larger. The contact area was easily worn. Therefore, in the conventional configuration, in a short period of time, the level difference between the swing end portion and the dust mounting surface is reduced to reduce the dust carrying ability, or the dust mounting surface has a hole. However, there was a drawback that the first and second rostruls had to be replaced frequently. An object of the present invention is to solve the above-mentioned conventional drawbacks and provide a stalker for a refuse incinerator in which the contact portion between the swinging end portion and the dust mounting surface is less likely to wear.

[0004]

In order to achieve the above object, a stoker for a refuse incinerator according to the present invention comprises:
A counterbalance for exerting an upward force on the swinging end is provided at each of the ends of the second rostrur on the side of the pivotal connection, and the operation and effect are as follows.

[0005]

In other words, since the counter balances for exerting the upward force on the swinging end portions are respectively extended to the end portions of the first and second rostruts on the pivotal support connecting portion side, the first and second end portions are provided.
When dust is placed on the grate, the oscillating ends of the first grate and the grate receive a moment around the pivot axis in the direction opposite to the direction in which the load is applied, and the load is reduced accordingly. However, it acts on the dust mounting surface of the adjacent second or first rustles, and the pressure contact force of the swinging end portion with respect to the dust mounting surface becomes smaller than in the conventional case. As a result, it is possible to reduce the frictional force between the swing end and the dust mounting surface when the movable frame reciprocates in the direction in which the dust moves, and the swing end and the dust mounting surface can be reduced. The contact portion with the surface can be made less likely to wear, and the step difference between the swinging end portion and the dust mounting surface and the perforation of the dust mounting surface can be prevented.

[0006]

Therefore, since the step difference between the swing end and the dust mounting surface can be reduced and the dust mounting surface can be prevented from being pierced, the waste incinerator which can maintain the initial transporting ability for a long period of time. I was able to provide a stoker for use.

[0007]

Embodiments of the present invention will now be described with reference to the drawings. As shown in FIG. 2, an urban trash storage pit 1, a stoker-type urban trash incinerator 2 for incinerating an object to be treated, an ash extruding unit that receives and sends out ash falling from an ash outlet 11 of the incinerator 2. The device 12 and the flue gas treatment device 3 constitute a municipal waste treatment facility.

In the incinerator 2, a hopper 5 for accepting dust from the pit 1 which is intermittently supplied by a transfer device 4 using a grab bucket, and a pusher type for feeding the dust in the hopper 5 into the furnace. And the supply device 6 of No. 2 are connected to the workpiece supply port 8 of the furnace main body 7,
A stoker 9 that conveys dust supplied in a stagnant state near the supply port 8 is arranged in the furnace body 7, and is installed on the furnace wall on the opposite side of the supply port 8 to the supply port 8 in the space above the stoker 9. An igniting burner 10 is provided, dust is sequentially transferred from the supply port to the combustion gas space to be burned while being dried, and an ash chute 15 for receiving incinerated ash flowing down the gap of the stoker 9 is provided. is there.

The stoker 9 is arranged in order from the supply port 8 side.
The dry stoker 9A, the combustion stoker 9B, and the post-combustion stoker 9C are arranged in a step-down manner. The dry stoker 9A conveys the dust supplied from the hopper 5 while drying it before burning, and the combustion stoker 9B and the post-combustion stoker 9C convey the dust while burning it.

As shown in FIG. 1, the stoker 9 is constructed by arranging a plurality of first rostruls 13 and second rostruls 14 alternately on a horizontal frame in the advancing direction of dust. is there. The first and second lostrs 13 and 14 are
A large number of strip-shaped Rostrul members 16 are arranged in a horizontal plane.
The first rostles 13 are stacked in a direction perpendicular to the direction of movement of dust, and each of the first rostles 13 is pivotally mounted on a fixed frame 17 via a pivot shaft 20 so as to be vertically swingable in the direction of movement of dust. Each of the second rostruts 14 is connected to each other by a movable frame 18 which is reciprocally movable in the traveling direction of dust.
It is pivotally connected via a pivot shaft 20 so as to be vertically swingable in the direction of movement of dust. Then, the first and second loss 1
Each of the swing end portions 24 of the third and the fourth ends 14 and 13 of the second and first rostruts 14 and 13 adjacent to each other in the forward direction of the dust.
It is placed on the dust placing surface 26 of the above. In the mounted state, the first,
The second lostrs 13 and 14 make an angle of about 20 ° with respect to the fixed frame 17 and the movable frame 18. In addition, the first,
A counter balance 28 for applying an upward force to the swinging end 24 is provided at each of the end portions 27 of the second rostruts 13 and 14 on the pivotal support portion side. By this counter balance 28, the pressure contact force between the adjacent first and second rostruts 13 and 14 can be reduced.

The movable frame 18 is constructed by assembling a square pipe in a quadrilateral shape. The movable frame 18 reciprocates in the traveling direction of dust via a crank mechanism 29 provided below.

In the above structure, when the crank mechanism 29 is actuated, the movable frame 18 reciprocates in the dust advancing direction, and the first and second rostruls 13 and 14 are placed on the dust mounting surface 26 of the adjacent rostruls. Slide to transport dust. By sliding the first and second rustles 13 and 14 against each other, the clinker adhering to the dust mounting surface 26 and the molten plastic can be self-cleaned.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the accompanying drawings by the entry.

[Brief description of drawings]

[Figure 1] Detailed view of the stoker

[Figure 2] Overall view of the municipal waste treatment facility

[Explanation of symbols]

 13 1st Lostru 14 2nd Lostul 17 Fixed frame 18 Movable frame 24 Swinging end 26 Debris mounting surface 27 End part on the side of a pivotal connection 28 Counterbalance

Claims (1)

[Claims] 1. A plurality of first roostles (13) and second roostles (14) are alternately arranged along the direction of movement of dust, and the first roostles (1)
3) is pivotally connected to a fixed frame (17) so as to be vertically swingable in the traveling direction of the dust, and the second loss (1)
Each of 4) is pivotally connected to a movable frame (18) capable of reciprocating in the advancing direction of the dust so as to swing up and down in the advancing direction of the dust, and the first and second loss (13), (1
Each of the swinging end portions (24) of 4) is provided with the second and first rostruls (14), which are adjacent to each other in the forward direction of the dust.
A stalk for a refuse incinerator placed on the trash placement surface (26) of (13), wherein the first and second rustles (13), (14) have ends ( 27) A stoker for a refuse incinerator, each of which has a counterbalance (28) extending an upward force on the swinging end (24).