JPH09112867A - Gate of refuse dumping hopper for refuse incinerating facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To exactly prevent the occurrence of a bridge in the refuse supply hopper of a refuse incinerating furnace and to seal the hopper discharge port. SOLUTION: The gate 10 for switching the discharge port provided at the refuse dumping hopper 1 of the refuse incinerating furnace comprises two plates 12, 13 hinge-coupled to one another, and a rotary shaft 15 mounted at the end of the base end side plate 12. The port of the hopper 11 is closed by the gate 10 by the drive of the shaft 15. The refuse in the hopper 1 is compressed by the plate 12 by the swing of the gate 10 by the forward and reverse rotations of the shaft 15 at a predetermined pitch to remove a bridge.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refuse incineration facility capable of closing the discharge port of a hopper for injecting waste in a refuse incinerator to shut off the outside air and removing a bridge of dust generated in the hopper. In regard to the gate of the hopper for dumping garbage in.

[0002]

2. Description of the Related Art Garbage collected in municipalities is transported to an incinerator factory and placed in a hopper provided above an incinerator. Then, a predetermined amount of waste is sequentially discharged from the hopper, supplied to the incinerator, and incinerated.

FIG. 5 is a schematic vertical sectional view showing an example of a conventional hopper section in the above-mentioned refuse incinerator. In FIG. 5, 1 is a hopper, 2 is a horizontal screw conveyor provided at the bottom of the hopper 1, and 3 is a disperser having rotary blades provided at one end of the horizontal screw conveyor. A damper 6 for opening and closing the supply port 1a at the upper end of the hopper is provided on the upper side wall of the hopper 1 so as to be openable and closable around a shaft 7.

The waste fed into the hopper 1 through the feed port 1a at the upper end of the hopper 1 is sequentially rotated from the discharge port 1b at the lower end of the hopper by the rotation of the horizontal screw conveyor 2 provided at the lower part and the rotation of the disperser 3. Discharged inside and incinerated.

[0005] In the hopper 1 of such a refuse incinerator, a phenomenon in which refuse sometimes bridges and stays may occur. If the waste builds up in the hopper 1 due to the bridge, the waste cannot be smoothly supplied to the incinerator, and the waste incineration efficiency decreases.

In order to prevent such a dust bridge in the hopper 1, various measures have conventionally been taken. In the device shown in FIG. 5, the shaft 4 is centered on the lower side wall of the hopper 1. Is provided with a fan-shaped bridge prevention plate 5 that swings up and down, and when a bridge occurs, the prevention plate 5 is swung to compress dust and remove it.

FIG. 6 is a schematic vertical sectional view showing another example of the hopper of the refuse incinerator. In this example, a plurality of bridge removing rods 8 are provided on the side wall of the hopper 1 so as to be vertically movable toward the lower portion of the hopper 1 where bridges are likely to occur. Reference numeral 9 is a hydraulic cylinder for moving the bridge removing rod 8 up and down. When a bridge occurs,
The bridge is removed by moving the bridge removing rod 8 up and down by the hydraulic cylinder 9.
A gate 10 for sealing the outlet is provided near the lower outlet of the hopper 1 so as to be openable and closable around a shaft 11.

[0008]

However, the above-mentioned conventional hopper gate for throwing in dust has the following problems. That is, on the lower side wall of the hopper 1 shown in FIG.
In addition to the structure in which the fan-shaped bridge prevention plate 5 which can be rotated up and down around the shaft 4 is provided, the upper side supply port 1a of the hopper 1 is separately opened and closed on the upper side wall of the hopper 1. Since it is necessary to provide the damper 6 for this purpose, the space is restricted and the equipment cost rises.

Further, in the structure shown in FIG. 6 in which a plurality of bridge removing rods 8 are provided on the side wall of the hopper 1, since the bridge removing rods 8 locally penetrate the hopper 1, the bridge is removed. There are cases where it cannot be removed.

Therefore, an object of the present invention is to solve the above-mentioned problems, to properly prevent the generation of bridges in the hopper for supplying dust of a refuse incinerator, and to seal the hopper discharge port. Another object of the present invention is to provide a gate for a hopper for inputting waste in a waste incinerator that is efficient and economical with low equipment cost.

[0011]

SUMMARY OF THE INVENTION The present invention is a gate for opening and closing a discharge port provided in a waste input hopper of a waste incineration facility, the gate being a plane length of the discharge port. The plate is divided into two in the vertical direction and hinged to each other, and the end of the base plate is rotated by a drive source attached to one side wall of the discharge port. The gate is fixed to the moving shaft, and the driving of the rotating shaft closes the discharge port by the gate composed of the two plate bodies. Further, the rotating shaft is rotated forward and backward at a predetermined pitch to move the gate. By swinging in the vertical direction, the base plate of the gate compresses dust in the hopper and removes the bridge generated in the hopper. .

[0012]

Next, the present invention will be described with reference to the drawings. FIG. 1 is a schematic vertical sectional view of a hopper for throwing in dust showing an embodiment of the present invention, FIG. 2 is a view showing a driving unit of a gate, FIG. 3 is a schematic front view of a gate portion, and FIG. 4 is a schematic view of FIG. It is a side view. A gate 10 for opening and closing the discharge port 1b is provided at the discharge port 1b of the waste input hopper 1 in the waste incineration facility. The gate 10 is divided into two in the plane length direction of the discharge port 1b, and is composed of two plates 12 and 13 which are connected to each other by a plurality of hinges 14. The plate 10 covers the discharge port 1b and closes it. It has a sufficient area.

A rotating shaft is provided at the end of the base plate 12 of the gate 10.
15 is attached, and the rotating shaft 15 includes a rod 16a of a hydraulic cylinder 16 attached to the outer surface of the side wall of the hopper 1,
They are connected via a connecting piece 17. Therefore, by driving the hydraulic cylinder 16, the gate 10 rotates about the shaft 14, and the tip portion of the tip side plate body 13 thereof has the discharge port 1b.
The inside of the hopper 1 is closed by engaging with the inner surface of the side wall.

Of the two plates 12 and 13 forming the gate 10,
A plurality of stoppers 18 are attached to the connecting portion by the hinge 14. Therefore, when the gate 10 is rotated, the distal end side plate body 13 joined by the hinge 14 is supported by the stopper 18, becomes substantially flush with the proximal end side plate body 12, and closes the discharge port 1b.

When a dust bridge occurs in the hopper 1, the hydraulic cylinder 15 is driven to rotate the rotating shaft 14 forward and backward at a predetermined pitch. As a result, the gate 10 is the plate 1
It swings up and down with the hinges of 2 and 13 bent in a V shape. Therefore, by the base plate 12 of the gate 10,
As a result of the dust in the hopper 1 being compressed and reduced in volume, the bridge in the hopper 1 can be removed properly.

[0016]

As described above, according to the present invention, it is possible to properly prevent the generation of the bridge due to the supplied waste in the waste supplying hopper of the waste incinerator, and
It is also possible to seal the hopper discharge port, resulting in many industrially useful effects such as being extremely efficient, economical in equipment cost, and the like.

[Brief description of the drawings]

FIG. 1 is a schematic vertical sectional view of a hopper for throwing in dust showing an embodiment of the present invention.

FIG. 2 is a diagram showing a gate driver.

FIG. 3 is a schematic front view of a gate portion.

FIG. 4 is a schematic side view of FIG. 3;

FIG. 5 is a schematic vertical sectional view showing an example of a hopper portion of a conventional refuse incinerator.

FIG. 6 is a schematic vertical sectional view showing another example of the hopper portion of the conventional refuse incinerator.

[Explanation of symbols]

 1 Hopper 1a Supply Port 1b Discharge Port 2 Screw Conveyor 3 Disperser 4 Shaft 5 Bridge Prevention Plate 6 Damper 7 Shaft 8 Bridge Removal Rod 9 Hydraulic Cylinder 10 Gate 11 Shaft 12 Base Side Plate 13 Tip Side Plate 14 Hinge 15 Rotating Shaft 16 Hydraulic cylinder 17 Connecting piece 18 Stopper

Claims (1)

[Claims] 1. A gate for opening and closing a discharge port provided in a waste input hopper of a waste incineration facility, wherein the gate is 2 in a plane length direction of the discharge port.
It is composed of two plates that are divided and hinged to each other, and the end of the base plate is fixed to a rotating shaft that is rotated by a drive source attached to one side wall of the discharge port. When the rotating shaft is driven, the discharge port is closed by the gate composed of the two plate bodies, and the rotating shaft is rotated forward and backward at a predetermined pitch to swing the gate vertically. By moving the gate, the basal plate of the gate compresses the trash in the hopper and removes the bridge generated in the hopper. Hopper gate.