JP3038663U - Automatically controlled drainage device - Google Patents

Abstract

(57) An object of the present invention is to provide an automatic control type drainage device having a sensor which is durable and has high reliability, unlike a sensor based on a float. SOLUTION: An ultrasonic sensor 7 having an ultrasonic transmitter and a receiver for ultrasonic waves is provided above the drainage basin 1, and the position of the liquid surface in the drainage basin 1 is measured by the ultrasonic sensor 7, The ultrasonic pump 7 is configured to automatically control the operation of the drainage pump 2 that discharges the liquid in the drainage basin 1.
The range below the certain height of the lower part and above the certain height of the upper part was defined as the dead zone.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a drainage device for automatically controlling the operation of a drainage pump in a drainage basin provided in a place where drainage or drainage is required such as in a cave.

[0002]

[Prior art]

 Conventionally, as a drainage system in a cave, rainwater generated in the cave is collected in a drainage basin, which is assembled by a drainage pump and discharged outside the cave. The operation of this drainage pump is automatically controlled by two floats installed in the drainage basin.One float is installed in the upper part of the basin and the other is installed in the bottom of the basin. When the water level rises, one float detects this and activates the drainage pump. When the water level falls, the other float operates and detects this, and the drainage pump stops operating.

[0003]

[Problems to be solved by the device]

 However, the above-mentioned float sensor detects the surface of the water when it moves in water, so it may stop working due to dust or water stains, which is not reliable. In addition, since the float is used with a mercury switch inside, it is not preferable from the environmental point of view.

The present invention has been made in view of the above problems, and unlike a sensor using a float, an automatic sensor having a mechanical sensor that is durable and has high reliability is provided. The purpose is to provide a control type drainage device.

[0005]

[Means for Solving the Problems]

 According to the first aspect of the present invention, an ultrasonic sensor having an ultrasonic transmitter and a receiver is provided above the drainage basin, and the position of the liquid level in the drainage basin is measured by the ultrasonic sensor. The automatic drainage device is configured to automatically control the operation of the drainage pump that discharges the liquid in the drainage container.

According to the second aspect of the present invention, an ultrasonic sensor having an ultrasonic transmitter and a receiver is provided above the drainage basin, and the position of the liquid level in the drainage basin is measured by the ultrasonic sensor. With this configuration, the operation of the drainage pump that drains the liquid in the drainage basin is automatically controlled, and the ultrasonic sensor is set above the certain height below and above the certain height inside the drainage basin. An automatic control type drainage device was used in which the upper range was the dead zone.

Further, the invention of claim 3 provides an ultrasonic sensor having an ultrasonic transmitter and a receiver above the drainage container, and measures the position of the liquid level in the drainage container by the ultrasonic sensor. In this configuration, the operation of the drainage pump that drains the liquid in the drainage basin is automatically controlled, and the ultrasonic sensor has a sensor body with a transmitter and a receiver in the upper part of the cylinder. The lower part was placed in the liquid in the drainage container, and the cylinder was supported vertically to provide an automatically controlled drainage device.

In the ultrasonic sensor of the above invention, the ultrasonic wave is emitted from the transmitter, reflected by the liquid level in the drainage basin and returned to the receiver, and the reflection time is measured to measure the liquid time. It seeks the distance to the surface. In the invention of claim 2, the ultrasonic sensor does not detect in the set dead zone, but detects only within a certain range. Further, the invention of the above-mentioned claim 3 is configured such that the sensor main body having the transmitter and the receiver is provided on the upper part of the cylindrical body and the ultrasonic wave is reciprocated by the liquid level in the cylindrical body.

[0009]

[Embodiment]

 An embodiment of the present invention will be described below with reference to the drawings. 1 and 2 show a first embodiment of the present invention, in which a drainage pump 2 is provided in a drainage basin 1 provided on the floor of a cave and a drainage pipe 2 is connected to the drainage pipe 3. It is led out of the drainage basin 1. The tip of the drainage pipe 3 reaches the outside of the cave. Also, a horizontal rail 5 is projected from the upper wall of the drainage basin 1 or the support 4, and two vertically long support rods 6, 6 are hung at the tip of the horizontal rail 5 at intervals to support them. An ultrasonic sensor 7 having an ultrasonic transmitter and a receiver is positioned between the rods 6 and 6, and a band 8 is wound around them to support the ultrasonic sensor 7.

The ultrasonic sensor 7 has a sensor body 9 housed in a cylindrical body 10 whose lower end is open. The sensor body 9 also has a transmitter 9a and a receiver 9b. The output signal of the ultrasonic sensor 7 is sent to a controller 11 provided at an appropriate place via a line 7a, and thereby the operation of the drainage pump 2 is controlled. An upper limit position H is set in advance in the upper part of the drainage container 1 as shown in FIG. 1, and a lower limit position L is set in the lower part. The ultrasonic sensor 7 has a dead zone above the upper limit position H and below the lower limit position L.

The ultrasonic sensor 7 is set so as to intermittently operate at predetermined time intervals, and constantly detects the water surface in the drainage basin 1. Then, when the amount of rainwater in the drainage basin 1 increases and reaches the upper limit position H shown in FIG. 1, the ultrasonic sensor 7 measures and outputs a signal to that effect to the controller 11, and the controller 11 outputs the drainage pump. Turn on 2. As a result, the rainwater in the drainage basin 1 is discharged to the outside of the cave through the drainage pipe 2. When this drainage lowers the water surface to the lower limit position L, the ultrasonic sensor detects this and informs the controller 11 to stop the operation of the drainage pump 2. In this way, the rainwater in the drainage basin 1 is automatically drained.

FIG. 3 and FIG. 4 show a second embodiment of the present invention. In this embodiment, the cylindrical body 10 of the ultrasonic sensor 7 ′ is hollow below the sensor body 9. The two supporting rods 6, 6 supporting the ultrasonic sensor 7'corresponding to this are also extended downward, and the band 8 is wound around the middle part and the lower part of the support rod 6, and It supports the sound wave sensor 7 '. Other configurations are similar to those of the first embodiment.

In the above-mentioned first and second embodiments, the ultrasonic sensor 7 is supported by the two support rods 6, 6, but the present invention is not limited to this, and the ultrasonic sensor 7 may be provided above the drainage rod by an appropriate one. All you have to do is support. In addition, in the above-described embodiment, an example is shown in which rainwater in a cave is collected in a drainage basin and drained. it can. In addition, although the dead zone is provided in the ultrasonic sensor 7 in each of the above embodiments, the dead zone may be set arbitrarily.

[0014]

[Effect of the invention]

 In the invention of claim 1, the ultrasonic sensor measures whether the water level of the liquid in the drainage container is at the upper limit position or at the lower limit position, and thereby the drainage pump is operated or stopped. Therefore, unlike the conventional detection of the liquid surface by the float, it does not involve any mechanical operation, and therefore has good durability and does not have a failure for a long period of time. It is also highly reliable because it can be detected without being affected by dust and suspended solids. In addition, the measurement of the liquid surface position by this ultrasonic sensor can be detected without being limited to the target object such as water, oil, sewage, and highly viscous liquid.

According to the second aspect of the invention, in addition to the effect of the first aspect of the invention, since the ultrasonic sensor is provided with a dead zone, for example, a worker is prevented from dropping by mistake. Even when the liquid container is covered with a grid-like lid, an ultrasonic sensor can be provided above the lid to detect the liquid level position in the drainage container.

According to the invention of claim 3, in addition to the effect of the invention of claim 1, the lower part of the cylinder having the ultrasonic sensor in the upper part is immersed in the liquid in the drainage container. As a result, obstacles do not enter the liquid level inside the cylinder, and the liquid level position can be detected more reliably.

[Brief description of the drawings]

FIG. 1 is a side view showing a schematic configuration of a first embodiment example of the present invention.

FIG. 2 is an enlarged side view of the ultrasonic sensor and its support according to the first embodiment of the present invention.

FIG. 3 is a side view showing a schematic configuration of a second embodiment example of the present invention.

FIG. 4 is an enlarged side view of an ultrasonic sensor and a supporting tool therefor according to a second embodiment of the present invention.

[Explanation of symbols]

 1 Drain Tank 2 Drain Pump 3 Drain Pipe 6 Support Rod 7 Ultrasonic Sensor 8 Band 9 Detector 9a Transmitter 9b Receiver 10 Cylindrical Body 11 Controller

Claims (3)

[Utility model registration claims] 1. An ultrasonic sensor having an ultrasonic transmitter and a receiver is provided above the drainage basin, and the position of the liquid surface in the drainage basin is measured by the ultrasonic sensor, and the drainage basin is thereby measured. An automatic control type drainage device, which is configured to automatically control the operation of a drainage pump that drains the liquid inside. 2. An ultrasonic sensor having an ultrasonic transmitter and a receiver is provided above the drainage basin, and the position of the liquid surface in the drainage basin is measured by the ultrasonic sensor, and the drainage basin is thereby measured. It is configured to automatically control the operation of a drainage pump that discharges the liquid inside, and the ultrasonic sensor has a dead zone in a range below a certain height in the lower part of the drainage vessel and above a certain height in the upper part. An automatic control type drainage device characterized in that 3. An ultrasonic sensor having an ultrasonic transmitter and a receiver is provided above the drainage basin, and the position of the liquid surface in the drainage basin is measured by the ultrasonic sensor, and the drainage basin is thereby measured. It is configured to automatically control the operation of a drainage pump that discharges the liquid inside, and the ultrasonic sensor is provided with a sensor main body having a transmitter and a receiver in the upper part of the cylinder, and the lower part of the cylinder is in the drainage container. An automatically controlled drainage device, characterized in that it is placed in a liquid and the cylinder is supported vertically.