JPH0247647B2 - GOMISHOKYAKURONIOKERUGOMIKYOKYURYOCHOSEIHOHO - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for automatically adjusting the amount of waste supplied in a waste incinerator.

(Prior Art) FIG. 3 is a schematic diagram of a general-purpose garbage supply device and an incinerator.

In the figure, 1 is a furnace, 2 is a stoker installed in the furnace, 3 is a garbage supply port of the furnace 1, 4 is a hopper connected to this garbage supply port 3 and into which garbage is thrown, 5
is the supply pusher equipped at the lower end of this hopper.

In the automatic combustion control operation in the garbage incinerator having the above configuration, the amount of waste supplied to the furnace 1 is generally adjusted by setting the regular stroke 1 of the supply pusher 5 in advance, and pushing the supply pusher 5 at the regular stroke 1. During each of the moving, returning, and stopping operations, the stopping time is automatically changed based on a difference signal between the actual heat input amount and the required heat input amount.

In other words, if the stop time of the supply pusher 5 is shortened to shorten one cycle time, the amount of garbage supplied increases, and conversely, if the stop time is extended to lengthen one cycle time, the amount of garbage supplied decreases. be.

(Problems to be Solved by the Invention) However, as mentioned above, the conventional method of adjusting the amount of waste supplied simply changes the stop time of the supply pusher automatically based on the difference signal between the actual amount of heat input and the required amount of heat input. As the waste quality has improved recently, that is, the waste has less water content and has a lighter apparent specific gravity, the short stroke of the feed pusher will reduce the effect of pushing out and feeding the waste, so the stop time of the feed pusher will be reduced. In this case, the amount of supply can be increased by
There are cases in which the rated supply amount cannot be obtained even if the stop time of the supply pusher becomes zero.

This invention has been made in view of the above-mentioned points, and the object thereof is to always ensure the rated supply amount regardless of the waste quality in a method for adjusting the waste supply amount in automatic combustion control operation of a waste incinerator. It is.

(Means for Solving the Problems) The gist of the present invention to achieve the above object is to control the amount of waste supplied by the feed pusher in automatic combustion control operation of the waste incinerator, and stop the feed pusher. At the same time as adjusting the time,
A method for adjusting the amount of waste supplied in a waste incinerator is characterized in that the supply pusher stroke is automatically adjusted when the quality of waste changes to ensure the rated amount of waste supplied.

(Function) In this invention, the amount of waste supplied to the incinerator is adjusted by adjusting the stop time of the feed pusher within the normal stroke range when the waste quality is stable with little fluctuation; If fluctuations occur and the rated amount of incineration cannot be achieved due to the reduction in the stop time of the supply pusher, the pusher stroke is automatically changed to ensure the amount of waste supplied.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIGS. 1 and 2 are schematic diagrams of a garbage supply device and an incinerator to which the present invention is applied.

In the figure, parts common or equivalent to those in FIG. 3 are given the same reference numerals.

In this invention, a pusher stroke adjustment mechanism 6 is provided in conjunction with the feed pusher 5 for the furnace body 1.

The supply pusher stroke adjustment mechanism 6 shown in FIG. 1 is constructed by arranging a plurality of limit switches 7 within the operating range of the supply pusher 5.

That is, in addition to disposing the stroke limiting limit switches 7a and 7z of the supply pusher 5 at the maximum stroke forward and backward ends of the supply pusher 5, stroke adjusting limit switches 7b to 7f are provided between the stroke limiting limit switches 7a and 7z.
is installed, and the appropriate switch is automatically selected from among these stroke adjustment limit switches 7b and 7f according to the heat input variation signal, and is suitable for stable waste with little fluctuation in waste quality. and stroke adjustment limit switches 7b and 7c for setting the regular stroke l of the supply pusher 5.
During normal stroke operation, the stop time of the feed pusher 5 is adjusted to ensure the rated supply amount, and if the quality of waste changes and the rated feed amount cannot be secured even if the stop time of the feed pusher 5 is reduced to zero, the feed pusher The stroke adjustment limit switches 7c to 7f for setting the backward end of the supply pusher 5 are automatically selected in steps to automatically extend or shorten the stroke of the supply pusher 5 to ensure the rated supply amount.

In addition, full stroke operation is not performed in normal operation.
In principle, the entire amount of garbage remaining in the hopper 4 is dropped into the furnace before the furnace operation is stopped.

Next, the pusher stroke adjustment mechanism 6 shown in FIG. 2 uses a rotational displacement transmitter 8 (for example, a Celsin rotation transmitter) as a system to replace the stroke position detection system using the stroke limit switch described above. The device detects the stroke setting position and automatically adjusts the rotational displacement corresponding to the appropriate stroke based on the heat input variation signal, and automatically adjusts the stroke steplessly to ensure the rated supply amount of waste. be.

That is, the stroke of the supply pusher 5 is detected by winding the wire 9 connected to the supply pusher 5 around the rotary drum 10 to convert the horizontal motion of the supply pusher 5 into rotational motion, and by detecting the large and small gears 11a, which are interlocked with the rotary drum 10. 11b, the rotational speed of the large gear 11a is transmitted to the rotational displacement transmitter 8 so that it is within one rotation with respect to the entire stroke of the supply pusher 5, and the amount of displacement is transmitted to the receiver of the control panel. The amount of displacement of the rotational displacement transmitter 8 is automatically controlled based on the difference signal of the heat input amount of the waste, and the pusher stroke is automatically adjusted to ensure the rated supply amount of the waste.

Furthermore, at the maximum stroke forward end and backward end of the supply pusher 5, there are provided stroke limiting limit switches 12a as pusher stroke limiting devices.
12b is provided.

(Effects) As is clear from the above description, the present invention has the following advantages:
During the automatic combustion control operation of a garbage incinerator, sudden changes in the properties of the garbage may occur, for example, when the garbage contains less water and its apparent specific gravity becomes lighter, and the regular stroke of the feed pusher is short and the effect of pushing out and feeding the garbage is poor. When the rated supply amount cannot be secured due to the stop time of the pusher, the pusher stroke is automatically extended to ensure the rated supply amount, making it possible to maintain an efficient garbage incinerator at all times. Achieve automatic combustion control operation.

[Brief explanation of drawings]

1 and 2 are schematic configuration diagrams of a garbage supply device and an incinerator to which the present invention is applied, and FIG. 3 is a schematic configuration diagram of a conventional garbage supply device and incinerator. 1...furnace, 2...stoker, 3...garbage supply port, 4...hopper, 5...supply pusher, 6
... Pusher stroke adjustment mechanism, 7 ... Limit switch, 8 ... Rotational displacement transmitter, 9 ... Wire, 10 ... Rotating drum, 11 ... Gear, 1
2...Limit switch.

Claims (1)

[Claims] 1 Adjustment of the amount of garbage supplied by the supply pusher during automatic combustion control operation of the garbage incinerator, adjusting the stop time of the supply pusher, and automatically adjusting the pusher stroke when the quality of garbage changes to ensure the rated amount of garbage supplied. A method for adjusting the amount of waste supplied in a waste incinerator, characterized in that: