JPS6115024Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is used to remove the debris that occurs in the garbage input hopper in an incinerator for garbage such as municipal waste and industrial waste so that the garbage can enter the incinerator. The present invention relates to a hopper bridge removal device.

Conventionally, there have been problems such as the flames from the incinerator rising up to the input port of the input hopper due to debris bridging that occurs in the input hopper. In some prior art techniques, opposing walls of a garbage input hopper are moved toward and away from each other, thereby crushing the garbage and causing it to fall into the incinerator. However, such prior art cannot be applied to existing equipment and requires a large scale, and depending on the type of garbage, bridges cannot be effectively removed due to the mutual adhesion of the garbage.

SUMMARY OF THE INVENTION An object of the present invention is to provide a hopper bridge removal device that has a simple construction and is capable of removing bridges regardless of the type of input material.

Embodiments of the present invention will be described below based on the drawings. FIG. 1 is a simplified sectional view of a garbage incinerator equipped with a hopper bridge removal device 1 according to an embodiment of the present invention. The garbage accumulated in the garbage input pit 5 is input into the input hopper 2 by the crane 3 operated from the operation room 4, and is burned in the combustion chamber 6. In the input hopper 2, a bridging phenomenon, that is, a bridge, may occur due to dust, as shown by the imaginary line 7, for example. In order to remove this bridge, the bridge removing device 1 according to the present invention includes:
It is fixedly provided on the vertical wall surface 16 of the input hopper 2.

2 is a front view of the hopper bridge removing device 1 shown in FIG. 1, FIG. 3 is a side view thereof, and FIG.
The figure is a plan view thereof, and FIG. 5 is an enlarged sectional view taken along the section line - in FIG. 2. The hopper bridge removing device 1 includes a fixed cover 8, a pair of hydraulic cylinders 9 arranged at intervals in the width direction of the input port, an elevating cover 11, and a reduction plate 14. The fixed cover 8 is fixedly provided on the vertical wall surface 16 of the input hopper 2. As shown in FIG. 5, the fixed cover 8 has a portion 8a in contact with the vertical wall surface 16 of the input hopper 2, a portion 8b on the side away from the wall surface 16, and a portion 8b in the horizontal direction along the wall surface 16. Part 8d at both ends (direction perpendicular to the paper surface of Figure 5)
and a part 8c that connects these parts 8a, 8b, and 8d at the upper part. The fixed cover 8 is the fourth
As shown in the figure, it is formed to have a width approximately equal to the width of the input port of the input hopper 2 in the horizontal direction along the wall surface 16 (left-right direction in FIG. 4).

The upper portion of a hydraulic cylinder 9 is supported within the fixed cover 8 so as to extend vertically along a vertical wall surface 16 . In order to store the hydraulic cylinders 9 in the fixed cover 8 in this way, the portion 8b of the fixed cover 8 on the side away from the vertical wall surface 16 is located in the vicinity where the pair of hydraulic cylinders 9 are stored, as shown in FIG. As shown in FIG. 2, it is formed so as to protrude on the side away from the vertical wall surface 16. vertical wall 16
The remaining portion of the portion 8b on the side facing away from the vertical wall 16 extends parallel to the vertical wall surface 16. The fixed cover 8 is open at its lower part (lower part in FIG. 5), which allows the piston rod 15 of the hydraulic cylinder 9 inside the fixed cover 8, the lifting cover 11, etc. to reciprocate in the vertical direction. Become.

As shown in FIG. 5, the lift cover 11 is open at the top and can be housed within the fixed cover 8. It is formed so as to surround it. The lift cover 11 is formed generally in the same manner as the fixed cover 8 except for its upper and lower parts. The lower part of the lifting cover 11 is closed, and the piston rod 15 of the hydraulic cylinder 9
is fixed to. As a result, the piston rod 15 of the hydraulic cylinder 9 is driven to expand and contract, and the elevating cover 11 also reciprocates in the vertical direction. The lifting cover 11 is attached to the piston rod 1 of the hydraulic cylinder 9.
Since the hydraulic cylinder 9 is formed to surround the hydraulic cylinder 9 over a longer range than the amount of expansion and contraction of the cover 5, and the lower part is closed, dust does not get into the fixed cover 8 during reciprocating movement in the vertical direction.

At the lower end of the piston rod 15 of the hydraulic cylinder 9,
The direction of expansion and contraction of the piston rod 15, that is, the piston rod 1
A rolling plate 14 is connected to the plate 14, which can be angularly displaced around an axis 13 perpendicular to the axial direction of the plate 5. This reduction plate 14
is formed into a rectangular plate shape with a length approximately equal to the width of the input port of the input hopper 2 in the horizontal direction along the vertical wall surface 16 (left and right direction in Figure 4) as shown in FIG. be done. The width of the reduction plate 14 in the direction perpendicular to the longitudinal direction (left-right direction in FIG. 4) is relatively long.

Stoppers 18 and 19 for restricting the angular displacement of the reduction plate 14 are formed near the connecting portion that connects the reduction plate 14 to the piston rod 15 so as to be angularly displaceable.
These stoppers 18 and 19 are formed on the side away from the wall surface 16 and the side adjacent to the wall surface 16, respectively, with respect to the axis of the piston rod 15. Stoppa 19
The contact surface is formed to extend substantially along the axis of the piston rod 15, and is slightly inclined downward and away from the wall surface 16. As a result, the reduction plate 14 cannot be angularly displaced about the axis 13 in a direction in which the end face perpendicular to the longitudinal direction approaches the wall surface 16. Further, as described later, as the reduction plate 14 comes into pressure contact with the garbage, the end face of the reduction plate 14 perpendicular to its longitudinal direction can be smoothly angularly displaced in a direction away from the wall surface 16. The contact surface of the stopper 18 is formed to extend perpendicularly to the axis of the piston rod 15. As a result, even if the reduction plate 14 is pressed against garbage and displaced angularly as will be described later, the reduction plate 14 will only reach a state in which the width direction perpendicular to its longitudinal direction becomes perpendicular to the axis of the piston rod. Cannot be angularly displaced.

FIG. 6 is a diagram for explaining the operation in the vicinity of the reduction plate 14. As the piston rod 15 of the hydraulic cylinder 9 is driven to expand and contract in the vertical direction, the reduction plate 14
And the elevating cover 11 performs reciprocating motion in the vertical direction. As described above, the rolling plate 14 is formed in a rectangular shape that is long in the horizontal direction along the vertical wall surface 16. When the piston rod 15 of the hydraulic cylinder 9 is in a contracted state (the state shown in FIG. 6(1)), the width direction perpendicular to the longitudinal direction of the reduction plate 14 is made to be approximately parallel to the axial direction of the piston rod 15. It's hanging down. As the piston rod 15 of the hydraulic cylinder 9 expands, the lowering plate 14 comes into pressure contact with the bridge 7 due to debris shown by the imaginary line in FIG. 6, causing an angular displacement around the axis 13 perpendicular to the axial direction of the piston rod 15. do.
As shown by the arrow 17 in FIG. 6(2), the reduction plate 14 is angularly displaced by a stopper 19 so that the end face in the width direction perpendicular to the longitudinal direction thereof is separated from the wall surface 16. When the piston rod 15 of the hydraulic cylinder 9 is fully extended (the state shown in FIG. 6),
As the reduction plate 14 presses against the bridge, its width direction perpendicular to its longitudinal direction becomes perpendicular to the direction of expansion and contraction of the piston rod 15. Rolling down plate 14
is restricted by the stopper 18 so that the angular displacement does not occur beyond the state shown in FIG. 6, even when pressed against dust. With this, it is possible to effectively remove the bridge while the area to which the bridge is pressed is wide. This state shown in FIG. 6 and 3 is indicated by imaginary lines in FIGS. 2 to 5. Thereafter, the piston rod 15 of the hydraulic cylinder 9 is contracted, and the reduction plate 14 is accordingly displaced upward. As shown in FIGS. 6 4 and 5, the reduction plate 14 is angularly displaced around the axis 13 due to its own weight, and the width direction perpendicular to its longitudinal direction is parallel to the axial direction of the piston rod 15 (see FIG. 6 5). (state shown).

In this way, as the reduction plate 14 comes into pressure contact with the bridge, it is displaced about 90 degrees around the axis 13 perpendicular to the axial direction of the piston rod 15, and in this state the bridge is removed. Therefore, when removing bridges, the area for pressure contact is widened, making it possible to effectively remove bridges. Also piston rod 15
Since the reduction plate 14 hangs down due to its own weight as it shrinks, there is no possibility that the dust will be trapped and enter the fixed cover 8.

Although in the embodiments described above a hydraulic cylinder 9 was used as the drive cylinder, it is of course possible to use other hydraulic or pneumatic cylinders.

In the embodiment described above, the hopper bridge removal device 1
Although it is provided on the vertical wall surface of the input hopper 2, it is needless to say that it is not limited to the vertical wall surface and may be used on other wall surfaces.

In the above-mentioned embodiment, a pair of hydraulic cylinders 9 were provided, but the present invention is not limited to one pair, and may be selected as appropriate in consideration of the balance when the reduction plate 14 is pressed against the garbage, the pressure contact force, etc. do it.

As described above, according to the present invention, the hopper bridge removal device fixedly provided on the wall of the input port of the hopper includes a drive cylinder and an elevator that can be moved up and down along the wall by the drive cylinder. The structure is simple because it includes a cover and a reduction plate, and the bridging of the input material generated in the hopper is removed by the reciprocating movement of the reduction plate, and the bridging can be removed regardless of the type of the input material. It is possible. Further, since the reduction plate is configured to be angularly displaced as it comes into pressure contact with the bridge of the input material, it is possible to remove the bridge with a large pressure contact area during pressure contact.

[Brief explanation of the drawing]

FIG. 1 is a simplified cross-sectional view of a garbage incinerator equipped with a hop pub bridge removal device 1 according to an embodiment of the present invention, and FIG.
3 is a side view of FIG. 2, FIG. 4 is a plan view of FIG. 2, and FIG. 5 is a section line of FIG. 2.
FIG. 6, which is an enlarged sectional view seen from above, is a diagram for explaining the operating state of the area around the rolling down plate 14. 1... Hopper bridge removal device, 2... Input hopper, 8... Fixed cover, 9... Hydraulic cylinder,
11... Lifting cover, 14... Lowering plate.

Claims (1)

[Scope of Claim for Utility Model Registration] A fixed cover that extends vertically and is fixed to a wall near the input port of the hopper and has an open bottom end, and a fixed cover that extends vertically and is supported along the wall within the fixed cover and is directed downward. a drive cylinder that drives a piston rod to extend and contract; a lower end portion of the drive cylinder is fixed to the piston rod, and when the drive cylinder is driven to extend and contract, the drive cylinder is housed in a fixed cover that surrounds the drive cylinder over an area longer than the amount of expansion and contraction; an elevating cover that is movable up and down; and a lift cover that is connected to the lower end of the piston rod so as to be rotatable by a predetermined angular displacement around an axis perpendicular to the axis of the piston rod, and that extends over almost the entire width of the input port. What is claimed is: 1. A hopper bridge removal device comprising: a reduction plate provided therein.