JPH06313533A - Waste incinerating furnace - Google Patents

Abstract

PURPOSE:To enable to detect any condition of bridge of waste in a hopper by one set of level meter by a method wherein the hopper is provided at the upper part of the hopper with the level meter for detecting the level of waste while an operation detecting means for detecting the operation of a pusher is provided. CONSTITUTION:The combustion chamber 2 of a waste incinerating furnace 1 is provided with a hopper 4 for putting waste 3 into the camber 2 and a pusher 7 for cutting out the waste 3 at one end side of the same. An ultrasonic level meter 16 is provided at the upper part of the hopper 4 to detect the level of the waste 3. In this case, the level meter is not limited as the ultrasonic level meter 16. Further, the pusher 7 is provided with an operation detecting means 18 for detecting the operation of the pusher 7. The level of the waste 3 put into the hopper 4 is detected by the level meter 16 and when the waste 3 comes not to descend there is a possibility that a cavity 14 is produced and a bridge is produced whereby an operation detecting means 18 detects whether the pusher 7 is being operated or not. When the pusher 7 is being operated, a bridge is produced and, therefore, an alarm is outputted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, a refuse incinerator capable of detecting a void in a hopper of an urban refuse incinerator and forming a bridge.

[0002]

2. Description of the Related Art A conventional refuse incinerator will be described with reference to the drawings. FIG. 2 shows a schematic view of a conventional refuse incinerator. A hopper 4 for introducing dust 3 is provided on one side of the combustion chamber 2 of the refuse incinerator 1, and the dust 3 is detected on the inner wall surface of the hopper 4. A microwave first detector 5 and a second microwave detector 6 are installed at two locations, one above the other. A pusher 7 for cutting out the dust 3 is provided at the bottom of the hopper 4. The waste incinerator 1 is provided with a drying zone 8, a combustion zone 9, and a post-combustion zone 10 at the central bottom thereof, and an air duct 11 is opened at the bottom of each of the drying zone 8, the combustion zone 9 and the post-combustion zone 10. ing. Further, a re-combustion chamber 12 is provided at the furnace exit portion above the combustion chamber 2.

In the refuse incinerator 1, the dust 3 put in the hopper 4 is cut out on the drying zone 8 by the pusher 7. When the refuse incinerator 1 is operated, the dust 3 in the hopper 4 is operated. In some cases, a void 14 is formed in the space to form a bridge. In this way, when the dust 3 in the hopper 4 becomes a bridge, the dust 3 is removed from the drying zone 8 even if the pusher 7 is operated.
Can't be cut out into.

Therefore, in the conventional refuse incinerator 1, in order to detect the bridge in the hopper 4, the first wall is attached to the standing wall of the hopper 4.
The detector 5 and the second detector 6, or a plurality of detectors of more than two are provided to detect the bridge. For example, when the dust 3 put in the hopper 4 is detected by the microwaves of the first detector 5 and the second detector 6, and the first detector 5 and the second detector 6 are ON, It can be determined that the dust 3 is cut out normally. Then, as shown in FIG. 2, when the first detector 5 detects the dust 3 and turns on, and the second detector 6 turns off the dust 3 without detecting it, the bridge can be detected.

[0005]

However, when the detectors 5 and 6 are provided on the standing wall of the hopper 4 as described above,
When the void 14 is formed below the second detector 6, the first detector 5 and the second detector 6 are ON, so that the bridge cannot be detected. If we were to detect the bridge completely, we would need more detectors.

The present invention has been made in order to solve such a conventional problem, and provides a dust incinerator capable of detecting dust in any state in the hopper with a single level meter. It is intended to be provided.

[0007]

The refuse incinerator of the present invention comprises:
It is characterized in that a level meter for detecting the level of dust is provided on the upper part of the hopper and an operation detecting means for detecting the operation of the pusher is provided.

[0008]

With the above-described structure, the level meter detects the level of dust put in the hopper, and when the dust stops falling, it detects whether the pusher is operating or not. Can be detected,
It is possible to detect what kind of bridge is formed in the hopper.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an overall configuration diagram of a refuse incinerator according to an embodiment of the present invention. The refuse incinerator of this embodiment has the same basic structure as the conventional refuse incinerator, and a hopper 4 and a refuse 3 for introducing dust 3 into one end side of the combustion chamber 2 of the refuse incinerator 1. A pusher 7 for cutting out is provided. At the bottom of the combustion chamber 2, a drying zone 8, a combustion zone 9, and a post-combustion zone 10 are provided in a step-like manner so as to become lower toward the furnace outlet port 15. The drying zone 8, the combustion zone 9 and the post-combustion zone 10 are provided. An air duct 11 is opened at the bottom, and the re-combustion chamber 1 is provided at the furnace outlet above the combustion chamber 2.
Two are provided.

The difference between this embodiment and the conventional example is that an ultrasonic level meter 16 is provided above the hopper 4 to detect the level of dust 3. However, it goes without saying that the level meter is not limited to the ultrasonic level meter 16. Further, the pusher 7 is provided with operation detecting means 18 for detecting the operation of the pusher 7.

The operation of the above structure will be described below. In this embodiment, the dust 3 put into the hopper 4 is cut out by the pusher 7 onto the uppermost drying zone 8, dried in the drying zone 8 and burned on the combustion zone 9 and the post-combustion zone 10. Move toward the furnace outlet 15.

In the present invention, ultrasonic waves are emitted from the level meter 16 and the level of the dust 3 continuously fed into the hopper 4 is detected. While the dust 3 is normally cut out by the pusher 7, the level of the dust 3 gradually decreases. Garbage 3
If it stops descending, there is a possibility that a gap 14 is formed and it becomes a bridge, so the operation detecting means 18 detects whether or not the pusher 7 is operating, and if it is operating, it becomes a bridge. Therefore, some kind of alarm is issued.
However, if the operation detecting means 18 finds that the pusher 7 is not operating, the alarm is not issued because it is not a bridge.

[0013]

As described above, according to the present invention, a level meter for detecting the level of dust is provided on the upper part of the hopper, and the operation detecting means for detecting the operation of the pusher is provided. Therefore, dust can be detected as a bridge in any condition in the hopper.

[Brief description of drawings]

FIG. 1 is a schematic view of a refuse incinerator according to an embodiment of the present invention.

FIG. 2 is a schematic view of a conventional refuse incinerator.

[Explanation of symbols]

 1 Garbage incinerator 3 Garbage 4 Hopper 7 Pusher 8 Drying zone 9 Combustion zone 10 Post-combustion zone 16 Level meter 18 Operation detection means

Claims (1)

[Claims] 1. A trash incinerator in which a hopper for throwing in trash is provided on one side, a pusher for cutting out trash in the dry zone is provided at the bottom of the hopper, and trash is burned in the dry zone, the combustion zone and the post-combustion zone. A refuse incinerator characterized in that a level meter for detecting the level of dust is provided on the upper part of the hopper, and an operation detection means for detecting the operation of the pusher is provided.