JPH1164072A - Interfacial level gauge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the measuring efficiency and operating efficiency of an interfacial level gauge by eliminating the slack of a cable or a hose. SOLUTION: An interfacial level gauge is provided with a cable guide 3 and a hose guide 4. A cable 5 connected to a sensor 1 is wound around the cable guide 3, and a hose 6 connected to a cleaning device 2 is wound around the hose guide 4 so that the cable 5 and hose 6 moves vertically along the guides 3 and 4, in accordance with the sensor 1 moving vertically.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interface level meter, and more particularly to an interface level meter using a sensor which moves up and down with fluctuations in the water level of a treatment tank.

[0002]

2. Description of the Related Art Conventionally, when measuring the position of an interface of a treatment tank installed in a sewage treatment plant or the like, an interface level meter shown in FIG. 5 is used, as is well known.

[0005] That is, in FIG. 5, a treatment tank 50 contains clean water 57 and sludge 56, and a sensor 51 constituted by, for example, an ultrasonic transducer is floating in the clean water 57. It moves up and down with the change of the position 54.

[0004] The sensor 51 is connected to a converter 53 via a cable 52. In the interface level meter having such a configuration, the ultrasonic wave transmitted from the vibrator (not shown) incorporated in the sensor 51 is reflected at the interface 55 between the clean water 57 and the sludge 56 and received by the same vibrator. Is done.

In this case, since the speed of the ultrasonic wave propagating in the tap water 57 is known in advance, if the time from when the ultrasonic wave is transmitted to when it is received is measured by the converter 53, The distance between the illustrated sensor 51 and the interface 55, ie,
The position of the interface 55 can be measured.

In the above-described interface level meter, conventionally,
As shown in the left diagram of FIG.
5 is directly connected.

A conventional sensor 61 includes a cleaning device 62.
A hose 66 is directly connected to the cleaning device 62. Before the measurement, the hose 66 is connected to the cleaning device 62.
The sensor 1 is washed by the water supplied to the sensor 1.

[0008]

However, the above-described conventional interface level meter has the following problems. That is, as described above, the cable 65 is directly connected to the sensor 61 constituting the conventional interface level meter (FIG. 5), and the hose 66 is directly connected to the cleaning device 62. I have.

Therefore, when the sensor 61 moves up and down with the change of the position of the water surface 64, the cable 65 and the hose 66 may be loosened as shown in the right diagram of FIG.

As a result, the loosened cable 65 or hose 6
When the cable 6 and the sensor 6 are moved under the sensor 61, they hinder the measurement of the interface position, and the slack cable 65 and the hose 66 are connected to surrounding members (for example, a float (not shown) floating the sensor 61) It also becomes an obstacle when the sensor 61 moves up and down in association with the discharging mechanism (not shown).

As a result, the measurement efficiency and the operation efficiency of the interface level meter decrease.

An object of the present invention is to provide an interface level meter,
An object of the present invention is to improve measurement efficiency and operation efficiency by eliminating slack in cables and hoses.

[0013]

In order to solve the above problems, the present invention relates to an interface level meter in which a cleaning device 2 is attached to a sensor 1, comprising: B. A cable guide 3 and a hose guide 4 are provided. B. A cable 5 connected to the sensor 1 is wound around the cable guide 3, and a hose 6 coupled to the cleaning device 2 is wound around the hose guide 4. In accordance with the vertical movement of the sensor 1, the cable 5 and the hose 6
Is moved up and down along the cable guide 3 and the hose guide 4, respectively.

Therefore, according to the structure of the present invention, as shown in FIGS. 1 to 4, even when the sensor 1 moves up and down with the fluctuation of the position of the water surface 10, the cable 5 and the hose 6 are connected to the cable guide 3 respectively. Since it moves up and down along the hose guide 4, it does not loosen as in the related art (the right figure in FIG. 6), and does not hinder the sensor 1 from measuring the position of the interface 11. This does not hinder the operation when the device 2 moves up and down.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings according to embodiments. FIG. 1 is an overall view showing an embodiment of the present invention.

In FIG. 1, reference numeral 1 denotes a sensor, 2 denotes a cleaning device, 3 denotes a cable guide, 4 denotes a hose guide, 5
Denotes a cable, 6 denotes a hose, 7 denotes a treatment tank, 8 and tap water, 9 denotes sludge, 10 denotes a water surface, and 11 denotes an interface.

As is well known, the sensor 1 has a flat cylindrical case 17 (FIG. 2) in which a vibrator (not shown), which is an electroacoustic transducer, is provided. Built-in.

The vibrator is made of a magnetostrictive material such as nickel-Alfel or an electrostrictive material such as barium titanate, and is driven by electric power supplied through a cable 5.

As shown in FIG. 2, for example, a tubular cable guide 3 is erected at the center of the upper flange 12 of the case 17 containing such a vibrator. The cable 5 protruding from the opening 12A of the upper flange 12 is wound.

With this configuration, as the sensor 1 moves up and down with the change in the position of the water surface 10 (FIG. 1), the cable 5 moves up and down along the cable guide 3 and does not loosen.

On the other hand, a flat mounting member 16 is screwed to the upper flange 12 (FIG. 2) of the case 17 constituting the sensor 1, and the mounting member 16 has a tubular shape near the opening 16A. A hose guide 4 is provided upright.

The mounting member 16 includes a pipe 15
The cleaning device 2 is attached via the
Has an injection portion 14, and a plurality of injection holes 14 </ b> A formed in the injection portion 14 are located below the lower flange 13 of the case 17.

A hose 6 extending from the injection portion 14 penetrates through the pipe 15, and the hose 6 projects from an opening 16A of the mounting member 16 and is wound around the hose guide 4.
For example, it is connected to a water tap (not shown). With this configuration, the sensor 1 can be cleaned by supplying tap water to the cleaning device 2 via the hose 6 before the measurement and injecting the tap water from the injection hole 14A.

During the measurement, even if the cleaning device 2 moves up and down together with the sensor 1 (right diagram in FIG. 1), the hose 6 moves up and down along the hose guide 4, so that the hose 6 does not loosen.

FIG. 3 is a diagram showing an example in which the sensor 1 constituting the present invention is applied to a float 20.

The float 20 has a donut shape,
The disk 21 is placed on the disk 21, and a hole 21 is formed in the center of the disk 21. Hole 21A of this disk 21
The sensor 1 and the cleaning device 2 constituting the present invention described with reference to FIGS. 1 and 2 are attached to the periphery of the cable guide 3. A cable guide 3 around which a cable 5 is wound and a hose guide 4 around which a hose 6 is wound are provided. As shown in FIG.
It extends upward through 0A.

Therefore, when the float 20 and the disc 21 move up and down with the change of the position of the water surface 10, the sensor 1 and the washing device 2 also move up and down at the same time, and accordingly, the cable 5 moves along the cable guide 3 and the hose. Numerals 6 move up and down along the hose guide 4 respectively.

FIG. 4 is a diagram showing an example in which the sensor 1 constituting the present invention is applied to a water discharge mechanism 30.

The tap water discharge mechanism 30 is composed of, for example, three drain pipes 32. The three drain pipes 32 are connected by a connecting member 31, and discharges the tap water 8 in the treatment tank 7 (FIG. 1). It has a function and moves up and down as the position of the water surface 10 changes.

The sensor 1 and the cleaning device 2 constituting the present invention described with reference to FIGS. 1 and 2 are attached to the connecting member 31 of the water discharge mechanism 30.

Therefore, as the water discharge mechanism 30 moves up and down due to the change in the position of the water surface 10, the sensor 1 and the washing device 2 also move up and down, and accordingly, the cable 5 moves along the cable guide 3 and the hose. Numerals 6 move up and down along the hose guide 4 respectively.

The operation of the present invention having the above configuration will be described below. First, before the measurement, tap water is supplied to the cleaning device 2 via the hose 6 so that the injection hole 14A (FIG. 2)
And the sensor 1 is washed.

Next, using the interface level meter according to the present invention, the interface 11 between the clean water 8 and the sludge 9 in the treatment tank 7 (FIG. 1).
Measure the position of.

That is, when power is supplied to the sensor 1 via the cable 5, a vibrator (not shown) built in the case 17 of the sensor 1 is driven, and an ultrasonic wave S having a predetermined frequency (FIG. 1) Is transmitted.

Since the transmitted ultrasonic wave S is reflected at the interface 11 and the reflected wave R is received by the same vibrator, the time from transmission of the ultrasonic wave to reception of the ultrasonic wave is measured. By doing so, the position of the interface 11 is measured.

In this case, a cable 5 connected to the sensor 1 is wound around the cable guide 3, and a hose 6 connected to the cleaning device 2 is wound around the hose guide 4.

Therefore, during the measurement, the float 20 (FIG. 3)
Alternatively, when the water discharge mechanism 30 (FIG. 4) descends, the sensor 1
And the washing device 2 descends, as shown in the left diagram of FIG.
The cable 5 and the hose 6 also descend along the cable guide 3 and the hose guide 4, respectively, and extend downward.

During the measurement, when the sensor 1 and the washing device 2 are moved up with the rise of the float 20 (FIG. 3) or the water discharge mechanism 30 (FIG. 4), as shown in the right diagram of FIG. The cable 5 and the hose 6 also rise and contract along the cable guide 3 and the hose guide 4, respectively.

Therefore, unlike the conventional case (FIG. 6), the cable 5 and the hose 6 are not loosened. Even when the sensor 1 measures the position of the interface 11, the measurement does not hinder the measurement. Even when the cleaning device 1 or the cleaning device 2 moves up and down, it does not hinder the operation, and the measurement efficiency and the operation efficiency can be improved.

[0040]

As described above, according to the present invention, according to the present invention, an interface level meter is provided with a sensor attached to a cleaning device, a cable guide and a hose guide are provided, and a cable connected to the sensor is wound around the cable guide. At the same time, the hose 6 connected to the cleaning device is wound around the hose guide, and the cable and the hose are moved up and down along the cable guide and the hose guide, respectively, according to the vertical movement of the sensor. Even during the position measurement, the cables and hoses did not loosen, so that a technical effect of improving measurement efficiency and operation efficiency was achieved.

Further, since the cable is wound around the cable guide and the hose is wound around the hose guide, the cable and the hose are compactly packed, so that space is saved and space saving is promoted. Also, there is an effect that the mechanical winding operation is unnecessary.

[0042]

[Brief description of the drawings]

FIG. 1 is an overall view showing an embodiment of the present invention.

FIG. 2 is a detailed view of the present invention.

FIG. 3 is a diagram showing an example in which a sensor 1 constituting the present invention is applied to a float 20.

FIG. 4 shows a sensor 1 constituting the present invention is provided with a water discharge mechanism 30;
It is a figure showing the example applied to.

FIG. 5 is a general explanatory diagram of an interface level meter.

FIG. 6 is an explanatory diagram of a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sensor 2 Cleaning device 3 Cable guide 4 Hose guide 5 Cable 6 Hose 7 Treatment tank 8 Water 9 Sludge 10 Water surface 11 Interface 12 Upper flange of case 17 13 Lower flange of case 17 14 Injection part of cleaning device 15 Cleaning device 2 Pipe 16 mounting member 17 case of sensor 1

Claims (7)

[Claims] An interface level meter in which a cleaning device is attached to a sensor, wherein a cable guide and a hose guide are provided, and a cable connected to the sensor is wound around the cable guide, and a hose guide is attached to the hose guide. An interface level meter, wherein a hose connected to the cleaning device is wound, and a cable and a hose are moved up and down along a cable guide and a hose guide, respectively, according to a vertical movement of a sensor. 2. The cable guide and the hose guide,
2. The interface level meter according to claim 1, wherein each of the interface level meters is tubular. 3. The interface according to claim 1, wherein a cleaning device is mounted on the case of the sensor via a mounting member, a cable guide is provided on the case, and a hose guide is provided on the mounting member. Level meter. 4. The interface according to claim 1, wherein the sensor and the cleaning device are attached to a float, and when the sensor moves up and down according to the up and down movement of the float, the cable and the hose move up and down along the cable guide and the hose guide, respectively. Level meter. 5. The interface level meter according to claim 4, wherein the float is placed on a disk, and a sensor and a cleaning device are mounted around a hole of the disk. 6. The sensor and the washing device are attached to a water discharge mechanism, and when the sensor moves up and down according to the vertical movement of the water discharge mechanism, the cable and the hose move up and down along the cable guide and the hose guide, respectively. The interface level meter according to claim 1. 7. The interface level meter according to claim 6, wherein the water discharge mechanism has a connecting member, and a sensor and a cleaning device are attached to the connecting member.