JPH0827208B2 - How to measure garbage - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for measuring dust in a waste pipeline collecting facility.

[Conventional technology]

Conventionally, equipment as shown in FIG. 2 has been used as waste pipeline collection equipment.

In this facility, the dust thrown into the charging ports 1a to 1c is temporarily stored in the storage cylinders 2a, 2b and the storage device 3. Then, for example, the waste in the storage cylinder 2a is transported to the collection center 7 in the transport pipe 6 by the air flow after opening the intake valve 4a and then opening the discharge valve 5a. In addition, the wastes in the storage device 3 and the storage cylinder 2b are also sequentially transported to the collection center 7.

The waste collected in the collection center 7 is separated from the air by the separator 8 and supplied to the weighing device 9. After being weighed by the weighing device 9, it is discharged by a discharge device 10 (a container compactor, a storage drum, a continuous discharge device, or the like). The arrangements of the weighing device 9 and the discharging device 10 may be reversed.

The air separated by the separator 8 is dedusted by the bag filter 11, sucked by the blower 12, deodorized by the deodorizing device 13, and then released into the atmosphere.

In the conventional equipment as described above, the weighing device 9 is always operated with the same processing capacity regardless of the amount of dust. That is, in such a pipe-type waste collection facility,
The amount and specific gravity of the waste to be weighed greatly differ for each loading port (usually each building), and the pressure loss during air delivery differs depending on the distance from each loading port to the dust weighing device. There is usually a large variation in the amount (weight, volume) of the dust that reaches the hitting dust measuring device. Therefore, even when the amount of collected dust is small, the weighing device 9 is operated with the maximum processing capacity (maximum weighing capacity).

[Problems to be Solved by the Invention]

However, the weighing accuracy of the weighing device is
Since it is regulated to about 1/1000, if the amount of waste to be weighed is 1/10 of the maximum weighed value, the weighing accuracy at this time will be 1/100. For this reason, there is a problem in that the actual measurement accuracy becomes considerably lower than the accuracy of the weighing device. Also,
When waste with a small specific gravity is intensively collected and transported to the weighing device, there is a problem that the weighing device receives an amount of waste that exceeds the capacity that can be accepted and the waste overflows.

The present invention has been made to solve such a conventional problem, and an object of the present invention is to provide a method capable of highly accurately measuring dust with a weighing device without causing overflow or the like. .

For this reason, the present invention changes the maximum processing capacity (maximum weighing capacity per hour) of the waste weighing device based on the predicted value or the measured value of the amount of waste that is pneumatically (pneumatically) transported through the pipeline, and It measures dust in a weighing range close to the weighing accuracy of the weighing device, and its characteristic configuration is as follows.

(1) In a waste measuring method for waste in a waste pipeline collecting facility that has waste inlets at a plurality of locations in the pipeline and has a continuous scale using a belt scale, air is sent to the waste measuring apparatus through the pipeline. Predict the amount of waste to be discharged based on at least the predicted value of the amount and specific gravity of the waste input from each inlet and the pressure loss value when air is sent from each inlet to the waste weighing device, or Measurement of the dust by measuring with a measuring device provided on the upstream side of the device, and changing the maximum weighing capacity of the dust measuring device by changing the speed of the belt scale based on the predicted value or the measured value. Method.

(2) In a method of measuring waste in a waste pipeline collecting facility that has waste inlets at a plurality of locations in the pipeline and has a batch-type waste weighing apparatus, the waste that is sent to the waste weighing apparatus through the pipeline Of the amount of waste to be input from each inlet and the specific gravity and the pressure loss value when air is sent to the waste weighing device from each inlet, or the upstream of the waste weighing device. It is characterized in that the maximum weighing capacity of the waste weighing device is changed by changing the receiving and cutting speed of the waste of the waste weighing device based on the predicted value or the measured value. How to measure garbage.

[Action]

In the present invention, the weighing device is adjusted to the amount of waste to be measured,
Since it is constantly operated with a capacity close to the maximum weighing accuracy, highly accurate weighing can be performed even when the amount of dust changes.

In addition, there are continuous type and batch type in the garbage measuring device,
In the present invention, regardless of the type of the weighing device, highly accurate weighing is possible without causing dust overflow in the dust weighing device. That is, as described above, the waste that is collected and transported in the pipeline and reaches the waste weighing device is
It is characterized in that the weight and bulk of the waste are different from time to time due to the amount and specific gravity of the waste that is thrown in from each input port, as well as the pressure loss during transportation, etc. . Therefore, for example, when waste with a low specific gravity is intensively collected and transported in a conventional batch type waste weighing device, the weighing device receives an amount of waste that exceeds the capacity that can be accepted, and the waste overflows. There was a problem that it would end up. In addition, even with a continuous scale weighing machine using a belt scale, if the balance between the weight and the bulk of the waste is not good (for example, if the waste is only bulky paper), the dust will drop from the conveyor of the belt scale. There was a problem such as doing. According to the present invention, a problem peculiar to such a waste pipeline collection is
The weighing device predicts or measures the amount of waste transported in the pipeline and changes the maximum weighing capacity of the waste weighing device based on this predicted value or measured value. This can be properly accepted regardless of the bulk, and the overflow as described above can be prevented.

〔Example〕

 FIG. 1 shows an embodiment of the present invention.

In these drawings, the same components as those in FIG. 2 are designated by the same reference numerals, and the description thereof will be omitted.

In the figure, 14 is a central controller, and 15 is a metering speed adjusting device.

The amount of waste that is thrown into the throw-in port 1 and the specific gravity thereof are greatly different depending on the type of building in which each throw-in port is installed. Further, in collecting dust, since the pressure loss is different between the input port near the collection center 7 and the input port located far from the collection center 7, the collection capacity (dust collection speed) is also significantly different.

In the present invention, these data are stored in advance in the central controller 14
The weighing speed adjusting device 15 changes the weighing capacity (maximum weighing value) of the weighing device 9 in accordance with the amount of dust collected (the amount of dust supplied to the weighing device 9) based on these data. The central control device 14 and the weighing speed adjusting device 15 may be integrated, or the above data may be input to the weighing speed adjusting device 15 in advance.

The amount of collected dust may be predicted based on data given in advance, or the measuring device 16 as shown in FIG.
It can also be measured by a, etc.

When predicting the amount of waste collected, the amount of waste input from each input port 1a to 1c, specific gravity prediction data, data such as pressure loss from each input port are the central control unit 14 and the weighing speed adjustment device. Based on these data, the amount of waste collection is estimated.

In this way, in the method of predicting the amount of collected waste, a data updating system is added to the central control device 14 or the like, and the input data is updated based on the result of weighing by the weighing device 9. You may

Further, when measuring the amount of collected dust, as shown in FIG. 1, a measuring device is installed between the separator 8 and the weighing device 9.
16a is provided to measure the amount of dust supplied to the weighing device 9. As the measuring device 16a, for example, a belt scale, a weight measuring device using a damper method, a capacity measuring device using a level meter, or the like can be used.

Further, instead of the measuring device 16a, a measuring device 16b such as a dust catch sensor as shown in the figure may be provided on the transport pipe 6.

The measuring device 16a includes a continuous type such as a belt scale and a batch type.For example, in the case of a belt scale, by changing the speed of the belt, and in the case of a batch type, the device is used. Acceptance of garbage for
The weighing capacity (maximum weighing capacity per hour) can be changed by changing the cutting speed.

Therefore, for example, in a belt scale, when the amount of collected dust is small, the speed of the belt is reduced to reduce the weighing capacity, and when the amount of collected dust is large, the speed of the belt is increased to increase the weighing capacity. Is done.

Further, the present invention may be implemented by using the above-described prediction system and a measuring device together.

〔The invention's effect〕

According to the present invention described above, by predicting or measuring the amount of waste supplied and changing the maximum weighing capacity of the waste weighing device based on this, the amount of waste transported in the pipeline, the volume, etc. , It allows the waste metering device to properly receive the waste without overflowing,
Moreover, it is possible to greatly improve the measurement accuracy of dust compared with the conventional one.

[Brief description of drawings]

FIG. 1 is a flow sheet showing an embodiment of the present invention.
FIG. 2 is a flow sheet showing a conventional pipeline waste collection facility. In the figure, 1a to 1c are input ports, 2a and 2b are storage cylinders, 3 is a storage device, 4a and 4b are intake valves, 5a to 5c are discharge valves, 6 is a transport pipe, 7 is a collection center, and 8 is a separator. , 9 is a weighing device, 10
Is a discharging device, 11 is a bag filter, 12 is a blower, 13 is a deodorizing device, 14 is a central control device, 15 is a weighing speed adjusting device,
16a and 16b are measuring devices.

Claims (2)

[Claims] 1. A method for measuring waste in a waste pipeline collecting facility, which comprises a refuse input port at a plurality of locations in a pipeline and a continuous scale for measuring scales using a belt scale. Estimate the amount of refuse to be sent in air based on at least the predicted value of the amount and specific gravity of the waste introduced from each inlet and the pressure loss value when the air is delivered from each inlet to the waste weighing device, or Waste that is measured by a measuring device provided on the upstream side of the dust weighing device, and the maximum weighing capacity of the dust weighing device is changed by changing the speed of the belt scale based on the predicted value or the measured value. Weighing method. 2. A method of measuring waste in a waste pipeline collecting facility, which comprises waste input ports at a plurality of locations in the pipeline and has a batch-type waste weighing apparatus, wherein air is sent to the waste weighing apparatus through the pipeline. Predict the amount of rubbish based on at least the predicted value of the amount and specific gravity of the rubbish thrown in from each inlet and the pressure loss value when air is sent to the dust meter from each inlet, or The maximum weighing capacity of the waste weighing device is changed by changing the receiving and cutting speed of the waste of the waste weighing device based on the predicted value or the measured value. How to measure the garbage.