JPS6057523B2 - Garbage supply amount detection device in garbage incinerator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for automatically and continuously detecting and measuring the amount of waste fed into an incinerator.

Traditionally, the amount of waste sent to the incinerator was weighed at the waste supply crane.

The garbage is picked up by the garbage supply crane and measured by a load meter while being thrown into the hopper. This tells you how much garbage to put in for one time. The cumulative amount of input each time is also often displayed. However, such measurement methods are batch-like and lack continuity.

Waste is fed into the hopper intermittently, but once it enters the furnace, it continuously passes through the feeder, drying stoker, and combustion stoker. Since the rate of progress of waste is closely related to the combustion state, it is necessary to know the continuous rate of progress of waste from the hopper to the incinerator, that is, the continuous amount of waste supplied.
On the other hand, the speed of the feeder for feeding waste into the incinerator does not necessarily accurately represent the amount of waste fed.

Therefore, it is not possible to accurately determine the continuous supply amount of waste from the feeding speed of the feeder. Therefore, in conventional waste incinerators, the current situation is that the operator estimates the amount of waste to be supplied when operating the incinerator based on intuition and experience. By the way, if the amount of garbage supplied into the furnace can be determined accurately, the combustor speed can be set and operated according to the amount of garbage supplied.

In addition, the setting operation of the incineration amount and combustion management will be greatly improved. Furthermore, it greatly contributes to labor saving and automation of incinerator operation. The present invention aims to solve the above-mentioned problem of measuring the amount of garbage supplied to the incinerator in the conventional garbage incinerator, and it is possible to continuously and easily measure the amount of garbage supplied to the incinerator. Another object of the present invention is to provide a garbage supply amount detection device that can accurately measure the amount of garbage supplied.

In the present invention, a detection belt is disposed in a notch opening formed in a bottom plate of a garbage input hopper chute, and is positioned substantially on the same plane as the bottom plate and rotatably stretched around a plurality of rollers. A dust movement speed detection device comprising a dust movement speed detection section that detects the movement speed of dust moving on a detection belt as a rotation speed of a roller via the belt, and a rotation speed converter that converts the rotation speed into an electric signal. The basic structure of the invention includes: and a signal calculator that multiplies the output signal of the garbage movement speed detection device by the cross-sectional area of the garbage input hopper chute and outputs the amount of feed.

Hereinafter, details will be explained based on an embodiment of the present invention shown in FIGS. 1 and 2.

FIG. 1 is a partial vertical sectional view of a garbage incinerator equipped with a garbage supply amount detection device according to an embodiment of the present invention.

The garbage stored in garbage bit 1 is transferred to garbage supply crane 2.
The waste is picked up and thrown into the waste input hopper 3. The garbage 5 in the garbage input hopper 3 is transferred to the garbage input hopper chute 6.
It gradually descends through the garbage feeder 4a, and eventually reaches the garbage feeder 4a.
As a result, it is fed into the furnace little by little. Then, drying, combustion, and after-combustion are performed in the drying stoker 4b1, the combustion stoker 4C1, and the after-combustion device 4d, respectively. Reference numeral 7 denotes a garbage movement speed detection device, which is disposed in the middle of the bottom plate 8 of the garbage input hopper chute 6, as shown in FIG.

The dust movement speed detection device 7 is composed of an auxiliary roller 9, a detection roller 10, a detection belt 11 wound around both rollers 9 and 10, a rotation speed converter 12 that converts the rotation speed of the detection roller 10 into an electric signal, and the like. ing. That is, a part of the bottom plate 8 of the hopper unit 6 is cut out into a rectangular shape to form a notch opening 8a, which is arranged on the same plane as the bottom plate 8, so that the width of the bottom plate 8 is approximately equal to the width of the bottom plate 8. A detection belt 11 having a width equal to that is provided. The detection belt 11 is supported by auxiliary rollers 9 above and below the notch opening 8a, and is supported by a detection roller 10 behind it. Note that the detection belt 11 is provided with a small protrusion.
This is because it moves along with the garbage 5. If there is no deviation of 4 between the detection belt 11 and the dust 5, the speed of the dust 5 and the rotational speed of the detection belt 11 will be equal, and the detection roller 1
The rotational speed of 0 is proportional to the garbage speed.

The rotational speed of the detection roller 10 is increased by a speed increasing gear mechanism 13 and transmitted to a rotational speed converter 12.

Note that the speed increasing gear mechanism 13 can also be omitted. The rotation speed converter 12 converts the rotation speed of the detection roller 10 into an electric signal, and this electric signal is proportional to the dust speed.

The output signal of the rotation speed converter 12 is input to the signal calculator 14, where the garbage speed is multiplied by the cross-sectional area of the garbage input hopper chute 6, which is a constant. That is, the signal calculator 141 calculates the amount of garbage supplied and outputs a signal of the amount of garbage supplied. The display meter 15 receives the garbage supply amount signal from the signal calculator 14 and displays the garbage supply amount.

Either an analog signal or a digital signal may be used. 17
is a brush, and the bottom plate 8 of the garbage input hopper chute 6
and the detection belt 11, along the bottom plate side of the garbage input hopper chute 6.

Incidentally, the brush 17 prevents relatively small garbage in the garbage input hopper from falling through the gap. 16 is an outer case, a notch 8a1 detection belt 11, a speed increasing gear mechanism 1
3. It is attached to the hopper chute 6 surrounding the rotational speed converter 12, and maintains airtightness inside and outside the chute 6.

Next, the operation of the present invention will be explained.

Referring to FIGS. 1 and 2, the garbage 5 in the garbage input hopper 3 is fed into the furnace little by little through the garbage feeder 4a, and along with this, the garbage 5 flows over the bottom plate 8 of the hopper chute 6. It moves downward one by one while sliding. As the dust 5 descends, the detection belt 11 also gradually descends. The movement of the detection belt 11 is changed to the rotation of the detection roller 10, and the rotation speed converter 12
is converted into an electrical signal. Further, this electric signal is converted into a garbage supply amount by a signal calculator 14 and displayed on a display meter 15. In the present invention, since an endless belt is used as the detection belt 11, there are no parts that wear out and replacement work is not required.

Note that the speed of the garbage is different between the center of the hopper chute 6 and the vicinity of the bottom plate 8, so the garbage speed measured near the bottom plate 8 is not the average speed of the garbage. However, since there is a fixed relationship between the velocity near the bottom plate and the average velocity, the average velocity can be calculated by multiplying by a fixed correction coefficient. Further, since the detection belt 11 supports the dust load in place of the bottom plate 8, if there is no resistance on the detection belt 11, the dust will push down the belt 1.1 by its own weight and easily descend.

In other words, a dense part of the dust is formed below the detection belt 11, and a sparse part is formed above the detection belt 11.
As with soil, the presence of the detection belt 11 has a large effect on the flow of waste, causing unevenness in the flow of waste and causing the detected amount to no longer accurately correspond to the speed of waste. In order to prevent the occurrence of the above phenomenon, in the present invention, an appropriate friction mechanism (not shown) is provided on the auxiliary roller 9, the detection roller 10, or the detection belt 11, so that the detection belt 11 has a certain rotational resistance. This prevents the belt 11 from being pushed down by the weight of the garbage. By doing so, it is possible to prevent the flow speed of the dust 5 from changing even in the vicinity of the detection belt 11. As described above, the present invention forms a notch opening 8a in the bottom plate 8 of the garbage input hopper chute 6, and extends the detection belt 11 here so as to be lined up on the same plane as the bottom plate i. Since the amount of garbage supplied is detected from the speed of the moving belt 11, the amount of garbage supplied can be measured immediately and continuously no matter how the quality or properties of the garbage change.

As a result, it is possible to always set the combustion machine variables such as the amount of air to the stoker, air temperature, and stoker movement speed to appropriate values, and efficient incineration management can be achieved.
It is also effective in promoting labor-saving and automation of incinerator operation. In addition, since the detection belt 11 functions as a part of the bottom plate 8 of the garbage input hopper chute, there is nothing inside the chute 6 that obstructs the flow of garbage, so that the garbage 5 does not become clogged or clogged. There is no possibility of dust getting entangled with the detection part.

Furthermore, since the rotation speed of the detection roller 10 is configured to be converted into an electrical signal via the rotation speed converter 12, signal calculator 14, etc., it has excellent responsiveness and measurement accuracy, and has high practical utility. be.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of a garbage incinerator equipped with a garbage supply detection device according to an embodiment of the present invention. FIG. 2 is an enlarged view of the vicinity of the dust movement speed detection device. 1
is a garbage bit, 2 is a garbage supply crane, 3 is a garbage input hopper, 4a is a garbage feeder, 4b is a drying stoker, 4c
is a combustion stoker, 4d is a post-combustion stoker, 5 is garbage, 6
1 is a garbage input hopper chute, 7 is a garbage movement speed detection device, 8 is a bottom plate of the chute, 8a is a notch opening, 9 is an auxiliary roller, 10 is a detection roller, 11 is a detection belt, 12
1 is a rotational speed converter, 13 is a speed increasing gear mechanism, 14 is a signal calculator, 15 is a display instrument, 16 is an outer box, and 17 is a cover door.

Claims (1)

[Claims] 1. A detection belt 11 is disposed in a notch opening 8a formed in the bottom plate 8 of the garbage input hopper chute 6, and is positioned substantially on the same plane as the bottom plate 8 and rotatably stretched around a plurality of rollers. , garbage 5 moving on the detection belt 11
a dust moving speed detection unit that detects the moving speed of the roller 10 via the belt 11 as the rotational speed of the roller 10;
a garbage movement speed detection device 7 consisting of a rotation speed converter 12 that converts the rotation speed of the detection belt 11 into an electric signal;
and a signal calculator 14 that multiplies the output signal of the garbage movement speed detection device 7 by the cross-sectional area of the garbage input hopper chute 6 and outputs the amount of garbage supplied. A garbage supply amount detection device in a garbage incinerator.