JPH03260510A - Refuse incinerator - Google Patents

Abstract

PURPOSE:To make a positive and complete combustion of refuse and perform a discharging of generated ash out of an ash discharging port by a method wherein a ribbon screw for use in transporting refuse and ash is rotatably arranged between a refuse feeding hopper installed at one end of an incinerator and an ash discharging port arranged at a grid at the other end of the incinerator along the upper surface of the grid. CONSTITUTION:In this type of refuse incinerator, refuse G supplied into a hopper 2 is fed onto a grid 3 under rotation of a screw feeder 7, where the refuse G is transported toward an ash discharging port 4 while being released under rotation of a ribbon screw 5 and then the refuse is ignited with both burners 17 and 18. The ash generated as a result of combustion is discharged out of the ash discharging port 4 with the ribbon screw 5, the exhaust gas ascends and then is discharged out of a gas outlet 22. If the refuse G is of such a size as one enabling them to pass through the screw feeder 7 and the ribbon screw 5, even if the refuse G is of some blocks, the refuse G is ignited while being released on the grid 3 under rotation of the ribbon screw 5, so that a positive and complete combustion of the refuse can be attained.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a garbage incinerator.

2. Description of the Related Art In conventional garbage incinerators, garbage is burned while being moved on a grate, or garbage is burned while being fluidized using sand or the like as a medium.

Problems to be Solved by the Invention However, in the above-mentioned conventional garbage incinerator, there was a problem in that it was difficult to completely burn the lumpy garbage because it was not completely loosened on the fire bed.

The present invention aims to solve these problems by improving conventional waste incinerators.

Means for Solving the Problems In order to achieve the above object, the waste incinerator of the present invention provides a waste incinerator having a structure in which a waste incinerator is provided between a waste input hopper provided at one end of the incinerator and an ash discharge port provided in the fire bed at the other end. At least one ribbon screw is rotatably provided along the upper surface of the grate for transporting dirt and ash.

Function In the garbage incinerator with the above configuration, the garbage thrown from the hopper onto the fire bed is completely loosened by the rotation of the ribbon screw, dried and burned, even if it is in lumps, and then transferred to the ash discharge port. Ru. Therefore, it is ensured that the garbage is completely combusted. The ash produced by the combustion is discharged from the ash outlet.

Example Embodiments of the present invention will be described below based on the drawings.

First Embodiment As shown in FIGS. 1 to 3, the garbage incinerator of this embodiment has a hopper 2 provided on the furnace wall 1 on one end and an ash discharge port 4 provided on the grate 3 on the other end. In between, two ribbon screws 5 are rotatably arranged in parallel along the upper surface of the fire bed 3.

The hopper 2 is for charging the garbage G onto the fire bed 3 and has a screw feeder 7 that is rotationally driven by a motor 6.

The ribbon screw 5 is for transporting the garbage G and ash on the fire bed 3 toward the ash discharge port 4, and is made of a tubular body around which blades 8 are spirally wound (see Fig. 3). Both ends are rotatably supported by bearings 9 provided on the furnace wall, and a motor 11 is connected to one end via a chain transmission IO. The blade 8 has a large number of dirt scraping paddles 12 on its outer surface, and one end is connected to the cooling water W via a rotary joint 13.
The other end is connected to the water supply pipe 14 of the cooling water W via the rotary joint 13. Further, in the central space of the blade 8, an air supply pipe 16 for combustion air A is inserted into one end so as to be retractable, and a burner 17 is inserted into the other end so as to be retractable. The air supply pipe 16 is
It has multiple air holes in the tube wall. The two ribbon screws 5 are arranged in parallel with the same pitch and partially overlapped (see FIG. 2). Further, the furnace wall 1 equipped with a water pipe (not shown) includes a burner 18, a viewing window 19, and a thermometer 20.
A viewing window 19, a thermometer 20, and a gas outlet 22 are provided at the furnace top 21. The viewing window 19 is for monitoring the combustion inside the furnace, and the thermometer 20 is for controlling the temperature inside the furnace. A
control the amount of supply.

In the garbage incinerator with the above configuration, the garbage G supplied into the hopper 2 is thrown onto the fire bed 3 by the rotation of the screw feeder 7, and there, it is loosened by the rotation of the ribbon screw 5 and flows in the direction of the ash discharge port 4. transferred, both burners 17
．． It is burned by 18. At this time, combustion air A is supplied from the air supply pipe 16, and cooling water W is supplied from the water supply pipe 14 via the rotary joint 13 into the hollow hole of the blade 8, and after cooling the blade 8, the rotary joint Into 1
The water is drained from the drain pipe 15 via 3. This cooling water W
Therefore, the blade 8 can withstand long-term use. The ash produced as a result of the combustion is discharged from the ash outlet 4 by the ribbon screw 5, and the exhaust gas rises to the gas outlet 22.
is exhausted from. Incidentally, the burner 17 is moved in and out depending on when the lumpy waste G is thrown in and the degree of combustion.

As mentioned above, in the garbage incinerator of this embodiment, as long as the garbage G is large enough to pass through the screw feeder 7 and the ribbon screw 5, even if it is lumpy,
Since the ribbon is combusted on the fire bed 3 while being loosened by the rotation of the ribbon screw 5, complete combustion can be ensured.

Furthermore, since the blades of the ribbon screw 5 are cooled with cooling water, not only can the life of the blades be improved, but also the thermal energy of the cooling water W can be used effectively.

Second Embodiment As shown in FIG. 4, the waste incinerator of this embodiment has a grate 3 located at the bottom of the furnace 23 with a supply box 24 for combustion air A separated.
The grate 3 is provided with an ash discharge port 4 and a plurality of air supply holes 25, and at least one ribbon screw 5 is rotatably provided along the upper surface of the grate 3. An air supply pipe 26 is connected to the air supply passage 24, and a first
Similarly to the embodiment, the air supply pipe 16 may be inserted into the central space of the ribbon screw 5 so that it can move in and out.

This garbage incinerator is configured as described above, so
It has the same function and effect as the garbage incinerator of the first embodiment, and the garbage G at the bottom of the ribbon screw 5 is also reliably removed by the combustion air blown from the air supply box 24 through the air supply hole 25 of the fire bed 3. can be burned.

In addition, as another embodiment of the ribbon screw 5, as shown in FIG.
The cooling water W is transferred from the hollow shaft 28 to the spokes 27.
It may also be supplied to the blades 8 via. Also,
The cross-sectional shape of the blade 8 may be circular or square.
Further, the blade 8 may be solid as long as it has a long life. Furthermore, the ribbon screw 5 may be installed at an angle, or the height may be increased from that shown in the drawings. Furthermore, in the central space of the ribbon screw 5, in addition to the air supply pipe 16 and the burner 17, measuring equipment related to incineration may be provided.

Effects of the Invention Since the present invention is configured as described above, it has the following advantages.

(1) Garbage is burnt while being loosened by the ribbon screw, so if it is large enough to pass through the ribbon screw, even if it is lumpy, it can be effectively loosened and completely burned.

(2) In the central space of the ribbon screw, ancillary equipment such as a combustion air supply pipe, a burner, and measurement equipment related to incineration can be provided.

(3) A desired incineration capacity can be obtained by providing a plurality of standardized ribbon screws.

(4) Ash can be forcibly discharged by a ribbon screw.

(5) The blades of the ribbon screw have a very simple structure, so even if they are deformed due to high temperatures, the device will not be strained.

[Brief explanation of drawings]

The drawings show embodiments of the present invention; FIG. 1 is a sectional view of the first embodiment, FIG. 2 is a sectional view taken along the line ■-■ in FIG. 1, and FIG. 3 is a partially enlarged view of the blade of the ribbon screw. FIG. 4 is a sectional view of a main part of the second embodiment, and FIG. 5 is a partial view showing another embodiment of the ribbon screw. 1... Furnace wall, 2... Hopper, 3... Fire bed, 4...
・Ash discharge port, 5... Ribbon screw, G... Garbage.

Claims (1)

[Claims] 1. A ribbon screw for transporting garbage and ash can be rotated along the top of the fire bed between the garbage input hopper installed at one end of the incinerator and the ash discharge port installed on the fire bed at the other end. A garbage incinerator characterized by being installed in