JPH0684640B2 - Monitoring device for vacuum type waste water collection device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a monitoring device for a vacuum type waste water collecting device, which is one of the methods for collecting waste water from many homes.

[Conventional technology]

Conventionally, there is a vacuum type sewage collector as one of the devices that collect sewage from many houses.

FIG. 4 is a diagram showing the overall configuration of this vacuum type waste water collecting device.

As shown in the figure, the sewage discharged from each household 30 on the ground flows into the underground sewage basin 3 through the natural flow pipe 1 in the ground. When a certain amount of dirty water is accumulated in the dirty water masu 3, the vacuum valve 2 attached to the upper part of the dirty water masu 3 opens, and the dirty water in the dirty water masu 3 is sucked in from the suction pipe 15. Then, this sewage is sucked into the vacuum sewage pipe 10 stretched underground through the vacuum valve 2 and collected in the water collection tank 41 of the vacuum pump station 40. The sewage collected in the water collection tank 41 is sent to a sewage treatment plant or the like by a pressure pump 42.

Here, the vacuum valve 2 is attached near the tip of the vacuum waste water pipe 10 to open and close the vacuum waste water pipe 10. This opening and closing is performed according to the amount of wastewater in the wastewater tank 3.

By the way, the vacuum valve 2 is usually installed in a manhole.

And in order to know the operating state of opening and closing of this vacuum valve 2,
It was necessary to actually hear with the human ear the sound of inhaling dirty water (and air) heard when the vacuum valve 2 was opened.

Further, since the vacuum valve 2 normally sucks in a substantially constant amount of sewage in one opening / closing operation, the total amount of sewage sucked in by the vacuum valve 2 is known by integrating the number of times the vacuum valve 2 is opened / closed. be able to. This value can be used as an index for calculating the sewerage charge and the inspection time of the vacuum valve 2.

For this reason, a vacuum valve 2 accumulator was conventionally attached,
This type of conventional integrator is a mechanical type that utilizes the fact that the pressure in the cylinder of the vacuum valve 2 changes from atmospheric pressure-vacuum-atmospheric pressure each time the valve operates, and is directly attached to the vacuum valve 2 main body. It was of structure.

[Problems to be Solved by the Invention]

However, the conventional vacuum valve 2 and the integrator attached thereto have the following problems.

In the conventional vacuum valve 2 described above, unless the vacuum valve 2 is located very close to the vacuum valve 2, it is not possible to hear the suction sound of sewage (and air) to know whether the operation is normal or not. was there.

When the valve of the vacuum valve 2 does not become fully closed due to a blockage or the like, the amount of the dirty water in the dirty water tank 3 decreases and it becomes unnecessary to absorb the dirty water from the dirty water tank 3 even if the vacuum valve 2 Air is sucked into the vacuum sewage pipe 10 side from the gap of the valve to reduce the degree of vacuum in the vacuum sewage pipe 10.

As a result, the vacuum degree of the entire apparatus including the water collection tank 41 and all the vacuum dirty water pipes 10 connected thereto is lowered, but due to this decrease in the vacuum degree, a vacuum degree low alarm is issued at the vacuum pumping station 40. At this point, the manager of this device is automatically notified of the alarm.

As a result, the administrator closes the sluice valve (not shown) installed at each confluence of the vacuum sewage pipe 10 in order from the side closer to the vacuum pumping station 40, divides the vacuum sewage pipe 10 and divides each vacuum sewage pipe. It is necessary to narrow down the high pressure range by looking at the pressure of 10 parts one by one, and find the corresponding vacuum valve 2, which requires a lot of time and labor, and therefore it takes time to find the defective part. There was a problem that it required.

Also, if the valve of the vacuum valve 2 malfunctions and the sewage accumulates in the sewage muddy 3 and the valve does not open even though the amount of the sewage exceeds the amount that should have been opened, the sewage masu 3 becomes full and Although the sewage water 3 overflows, there is also a problem that the failure of the vacuum valve 2 cannot be detected until the decrease of the overflow occurs.

Also, since the integrator is directly attached to the vacuum valve 2 main body, it is necessary to open the lid of the manhole one by one to know the cumulative value of the number of opening / closing operations of the valve. There is a problem that it takes time to open and close it because it cannot be opened easily to deal with illegal dumping of rubber and the like.

The present invention has been made in view of the above-mentioned points, and a vacuum type waste water collecting device capable of easily detecting the operating state of a vacuum valve and the cumulative number of opening / closing operations, and also capable of easily warning an abnormal operation of a vacuum valve. It is to provide a monitoring device.

[Means for Solving the Problems]

In order to solve the above problems, the present invention provides a vacuum valve, a valve open / closed state detecting means for detecting whether the valve is open or closed, and a vacuum valve based on a detection signal output from the valve open / closed state detecting means. The number of times of opening and closing operations of the valve is integrated and the integrated value is output, and the closed state duration and open state duration of the vacuum valve are measured from the detection signal output from the valve open / closed state detection means. Along with this, there is provided abnormality detecting means for outputting a vacuum valve abnormality signal when the closed state duration exceeds a preset set time or the open state duration exceeds a preset set time.

[Action]

Only by using the detection signal of the valve open / closed state output from the valve open / closed state detection means, it is possible to integrate the number of times the valve is opened / closed and measure the closed state duration and open state duration of the valve. It is possible to know the total amount of sewage that has been sucked in, and at the same time, it is possible to detect an abnormality in the vacuum valve.

The open / close operation status of the valve is used as a detection signal and is taken out to the outside so that it can be integrated at a location easy to monitor, away from the manhole, and the status of whether the vacuum valve is operating normally can be known.

〔Example〕

An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a diagram showing a structure from a home 30 to a sewage sump 3 of a vacuum type sewage collection device equipped with a monitoring device according to the present invention.

As shown in the figure, the sewage discharged from the home 30 flows into the sewage stalk 3 through the natural flow pipe 1. The sewage masu 3 has a suction pipe for sucking the sewage in the sewage masu 3.
15 is attached, and this suction pipe 15 is connected to the vacuum waste water pipe 10 via the vacuum valve 2.

According to the present invention, a detector 5 is attached to the vacuum valve 2 and an alarm / accumulation box 7 (in which an alarm device and an accumulator is housed inside) is attached to the home 30 to signal the detector 5 and the alarm / accumulation box 7. It is configured by connecting with a transmission line.

That is, the open / close operation state of the vacuum valve 2 is detected as an electric signal by the detector 5, and the electric signal is transmitted through the signal transmission line 6 embedded together with the free-falling pipe 1 to the alarm / accumulation box 7
Sent to. Then, the number of times of opening and closing operations is integrated in the alarm and integration box 7, and an abnormality of the opening and closing state is detected from the state of the signal.

Here, FIG. 2 is a view showing the structure of the vacuum valve 2 and its surroundings, FIG. 2B shows the closed state of the vacuum valve 2, and FIG. 2A shows the open state of the vacuum valve 2.

As shown in FIG. 2B, the vacuum valve 2 is usually a cylinder 21
The piston cup 25 is pressed toward the lower left direction in the figure by the resilience of the inner spring 23, whereby the valve body 27 closes the vacuum dirty water pipe 10 and keeps it closed.

The pipe 29 connected to the cylinder 21 is connected to a vacuum valve controller (not shown). This vacuum valve controller keeps this pipe 29 at atmospheric pressure when the amount of sewage in the sewage tank 3 is small, and vacuums this pipe 29 when the amount of sewage in the sewage tank 3 increases to a predetermined amount or more. Has the function of As for this vacuum valve controller,
The structure as shown in the specification and FIG. 5 of Japanese Patent Application No. 1-111329 previously filed by the applicant of the present application is used.

When the amount of dirty water in the dirty water tank 3 becomes a predetermined amount or more, the air inside the cylinder 21 which is airtight by the rubber film 28 is blown out from the pipe 29 to become a vacuum. As a result, the piston cup 25 overcomes the force of the spring 23 and is pulled up in the upper right direction in the figure, and the valve body 27 opens the vacuum dirty water pipe 10 and opens.

As a result, the wastewater in the wastewater tank 3 is sucked into the vacuum wastewater pipe 10 through the suction pipe 15.

On the other hand, as shown in the figure, a magnet 53 is attached to a predetermined position of the piston cup 25, and a magnetic detector 51 is provided at a predetermined position of the cylinder 21 (a position facing the magnet 53 when the vacuum valve 2 is in a closed state). It is installed. The magnetic detector 51 and the magnet 53 constitute the detector 5. Where the magnetic detector
The magnet 51 emits a signal only when the magnet 53 approaches within a certain distance.

And when the vacuum valve 2 is closed as shown in FIG.
Since the magnet 53 comes closest to the magnetic detector 51, the magnetic detector 51
Signal is emitted from. On the other hand, when the vacuum valve 2 is open as shown in FIG. 4A, the magnet 53 is separated from the magnetic detector 51, and therefore no signal is emitted from the magnetic detector 51. Therefore, the open / closed state of the vacuum valve 2 can be detected.

In this case, the magnetic detector is adjusted only when the vacuum valve 2 is fully closed by adjusting the positional relationship between the magnet 53 and the magnetic detector 51.
Obviously, if 51 outputs a signal and the vacuum valve 2 is open even slightly, the signal can be turned off.

The detector 5 does not necessarily have the structure as described above, and does not necessarily have to have the structure using magnetism. In short, any valve opening / closing detecting means may be used as long as it can convert the open / closed state of the valve into a detection signal such as an electric signal or an optical signal. Further, the signal transmission line 6 may also transmit an optical signal in addition to the electric signal.

Next, the overall operation of the monitoring device for the vacuum type waste water collecting device according to the present invention will be described.

FIG. 3 is a block diagram showing the flow of the operation of this apparatus. FIG. 3A shows the vacuum valve 2 when it is normal, and FIG. 3B shows it when the vacuum valve 2 is abnormal.

First, as shown in FIG. 3A, normally, when the vacuum valve 2 is closed, the detector 5 emits a signal, and when the vacuum valve 2 is open, the detector 5 does not emit a signal. . Then, in the alarm and integration box 7, the closed state duration and the open state duration are measured from these signals, the number of times the vacuum valve 2 is opened and closed is integrated, and the integrated value is displayed. This integrated value is used as an index for calculating the sewerage charge and the inspection timing of the vacuum valve 2.

On the other hand, when the vacuum valve 2 is abnormal as shown in FIG.
The vacuum valve 2 is continuously closed or opened. And the detector 5 continues to emit a signal or does not emit a signal continuously. Therefore, the closed state duration time or the open state duration time measured in the alarm and integration box 7 exceeds the set time, whereby an abnormality of the vacuum valve 2 is detected and an alarm is issued. Then, the inhabitants notify the manager of the vacuum type waste water collecting device of this alarm, and the manager performs a repair process.

〔The invention's effect〕

As described in detail above, according to the monitoring device of the vacuum type waste water collecting device of the present invention, the following excellent effects are obtained.

Using the detection signal of the open / closed state of the valve output from the valve open / closed state detection means, it is possible to simultaneously integrate the number of opening / closing operations of the valve and measure the closed state duration and the open state duration of the valve.
That is, the total amount of wastewater sucked into the vacuum wastewater pipe can be known and the abnormality of the vacuum valve can be detected by only one valve opening / closing state detecting means without using separate detecting means. Therefore, the device can be simplified.

Normally, the amount of sewage drawn in by the vacuum valve in one opening / closing operation is almost constant, but according to the present invention, the cumulative value of the number of times of opening / closing operations of the vacuum valve can be easily known, so the total amount of sewage can be accurately and easily calculated. As a result, the sewerage charges can be calculated accurately and easily.

Since the open / close operation status of the valve is used as a detection signal and can be taken out to the outside, it is possible to know the operation status of the vacuum valve and the integrated value of the number of opening / closing operations without opening the manhole cover one by one.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a structure from a home 30 to a sewage basin 3 of a vacuum type sewage collection device equipped with a monitoring device according to the present invention, and FIGS. 2 (a) and 2 (b) are 3 is a diagram showing the structure of the vacuum valve 2 and its surroundings, FIGS. 3 (a) and 3 (b) are block diagrams showing the flow of operation of the monitoring device according to the present invention, and FIG. FIG. In the figure, 1 ... natural flow pipe, 10 ... vacuum wastewater pipe, 2 ... vacuum valve, 30 ... home, 40 ... vacuum pump station, 5 ... detector (valve open / close detection means), 7 ... It is an alarm box and a total box.

Claims (1)

[Claims] 1. Sewage discharged from many houses is collected in a sewage mist, and the sewage collected in the sewage mist is sucked into the vacuum sewage pipe through a vacuum valve that opens and closes the vacuum sewage pipe, and then the vacuum sewage pipe A vacuum type sewage collector that collects the sucked sewage in a vacuum pump station provided in the area, wherein the vacuum valve has a valve open / closed state detection means for detecting whether the valve is open or closed, and the valve open / closed state. From the detection signal output from the detection means, the number of times of opening / closing operations of the valve of the vacuum valve is integrated and the integrated value is output, and the detection signal output from the valve opening / closing state detection means Measures the closed state duration and open state duration, and outputs a vacuum valve error signal when the closed state duration exceeds a preset set time or when the open state duration exceeds a preset set time. Anomaly detection hand Monitoring device of a vacuum-type sewage collecting apparatus being characterized in that provided and.