JPH046010B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a method for controlling the on-off valve device that controls water supply to an aquarium when the on-off valve device malfunctions and cannot completely stop the water supply. This invention relates to water supply control equipment that can automatically eliminate causes of malfunction.

[Prior Art] There have been various types of equipment for controlling the supply of water into, for example, water tanks in water supply equipment. For example, a secondary valve that is a small on-off valve that is opened and closed by a float that follows the water level in this tank, or a small valve that is opened and closed by a water level signal from a water level detector that detects the water level in this tank. There are devices that open and close large on-off valve devices using water pressure by opening and closing auxiliary valves, which are electromagnetic valves. Such an on-off valve device includes a pressure chamber and a pressure receiving body movably provided within this pressure chamber, and changes the pressure within this pressure chamber by opening and closing the above-mentioned sub-valve.
This moves the pressure receiving body, and the movement of the pressure receiving body opens and closes the valve body. By the way, if a foreign object gets caught between the valve body and valve seat of this on-off valve device, or if this valve gets caught, the on-off valve device will not be able to close completely and the water supply will be interrupted. Unable to stop. In such a case, the water level in the tank will rise abnormally, water will overflow from the overflow pipe, and a large amount of water will be wasted. Of course, some conventional water supply equipment detects an abnormal rise in the water level in the aquarium and issues an alarm, but if a malfunction like this occurs at night, the detection may be delayed. Or, the person who repairs the water system is delayed in arriving, resulting in a large amount of water being wasted during this time.

[Problems to be Solved by the Invention] The present invention has been made based on the above-mentioned circumstances. The purpose is to provide water supply control equipment that can automatically eliminate this problem in the event that the water runs out.

[Means for Solving the Problems] The present invention provides a water level detector that detects the water level in an aquarium and outputs an abnormal water level signal when the water level in the aquarium rises abnormally. Then, the on-off valve device for supplying water into the water tank is opened for a predetermined short period of time, and then the on-off valve device is closed.

[Function] Therefore, according to the present invention, when the valve body of this on-off valve device catches or gets caught in a foreign object, the foreign object is removed by opening the valve once. is removed, and catching etc. are also eliminated. Therefore, even if such a malfunction occurs, the malfunction can be automatically eliminated and the on-off valve device can be brought into a completely closed state.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings. This embodiment is an on-off valve device for supplying water to an aquarium. This embodiment is suitable for cases in which the valve body of this on-off valve device becomes unable to close completely due to foreign matter being caught or caught.
This is a water supply control facility or system that automatically opens and then closes this on-off valve device to automatically eliminate this problem.

FIG. 1 shows the overall configuration of this system.
1 in the figure is a water tank, and the water tank 1 is configured to be supplied with water via a water supply pipe 3. An on-off valve device 2 is provided in the middle of this water supply pipe 3, and is configured to control water supply into this water tank 1. In addition, this on-off valve device 2
A pressure relief pipe 4 is connected to the pressure relief pipe 4, and an electromagnetic on-off valve 5 is attached to the tip of the pressure relief pipe 4 as a sub-valve. Further, a water level detector 6 is provided within this water tank 1 and is configured to detect the water level within this water tank 1. The signal from the water level detector 6 is sent to the control device 7, and the control device 7 is configured to control the sub-valve 5 and the on-off valve device 2 based on this water level signal.

The on-off valve device 2 described above is constructed as shown in FIG. That is, 20 is the valve body,
This valve body 20 is formed with an inflow side chamber 21 which is a high pressure side and an outflow side chamber 22 which is a low pressure side. A valve port 24 is formed to communicate the inflow side chamber 21 and the outflow side chamber 22. A valve body 25 is seated on this valve port 24 from the inflow side chamber 22 side, and is configured to open and close this valve port. Further, a pressure chamber 28 is formed in this valve body. . In this pressure chamber 18, there is a pressure receiving body.
27 people are said to be accommodated. This pressure receiving body 27 is movably accommodated in the pressure chamber 28 while keeping it watertight. Further, an atmospheric pressure chamber 29 is formed on the back side of the pressure receiving body 27, and this atmospheric pressure chamber 29 communicates with the atmosphere via an atmosphere communication passage 30. and,
This pressure receiving body 27 is connected to the above-mentioned valve body 2 via the valve shaft 26.
It is connected to 5. Further, a first pressure guiding passage 31 is formed within this valve shaft 26, and this first pressure guiding passage 31 communicates the above-mentioned inflow side chamber 21 and pressure chamber 28. Further, a second pressure guiding passage 32 is formed separately from this first pressure guiding passage 31, and this second pressure guiding passage 32 also communicates the above-mentioned inflow side chamber 21 and pressure chamber 28. A solenoid valve mechanism 33 is provided in the middle of this second pressure guiding passage 32. This electromagnetic valve mechanism 33 includes a valve body 34 that opens and closes this second pressure guiding passage 32.
4 is urged in the valve closing direction by a spring. Then, the solenoid 3 of this electromagnetic valve mechanism 33
The valve body 34 is configured to open when the valve 5 is excited. Further, a pressure relief passage 44 communicating with the pressure chamber 28 is formed.
This pressure relief passage 44 also serves as a small diameter orifice, and is connected to the sub-valve 5 via the pressure relief pipe 4. Further, a first pressure relief passage 41 is formed separately from this first pressure relief passage 44, and this second pressure relief passage 41 communicates the above-mentioned pressure chamber 28 and the above-mentioned outflow side chamber 22. ing. And this second
A solenoid valve mechanism 38 is provided in the middle of the pressure relief passage 41 . . This electromagnetic valve mechanism 38 includes a valve body 39 that opens and closes this second pressure relief passage 41, and this valve body 39 is urged in the valve closing direction by a spring. When the solenoid 40 of this electromagnetic valve mechanism 38 is excited, this valve body 39
The valve is configured to open. In addition, 37 is a stopper, and by adjusting this stopper 37, the above-mentioned pressure receiving body 27 and valve body 25
The stroke is adjustable.

In the on-off valve device configured in this manner, when the sub-valve 5 is closed, the pressure on the inflow chamber 21 side is transferred to the pressure chamber 28 via the first pressure guiding passage 31. The pressure is introduced and accumulated, and this pressure pushes down the pressure receiving body 27, and the valve body 25 closes. Further, when the sub-valve 5 is opened, the pressure inside the pressure chamber 44 is reduced to the first pressure relief passage 4.
4. Since the pressure is released through the pressure relief pipe 4, the pressure in the pressure chamber 28 decreases, and the pressure in the inflow side chamber 21 acting on the lower surface of the valve body 25 pushes up the valve body 25. Open the valve. Further, when the above-mentioned sub-valve 5 is closed, the pressure introduced via the pressure-guiding passage 32 is accumulated in this pressure chamber 28,
This pressure pushes down the pressure receiving body 27, pushes down the valve body 25, and closes the on-off valve device.

Further, the configuration of the control device 7 of the water supply system using such an on-off valve device will be explained with reference to the third example. In the figure, 50 is a fuse, 51 is a power switch, and 54 is a power lamp. These are connected to, for example, a commercial power source 53. This control device 7
is provided with a water level control section 62 for controlling the water level in the aquarium 1 within a predetermined range. This water level control section 62 is composed of a flip-flop circuit, and is connected to the commercial power supply 5 through the power supply section 61.
Connected to 3. When the low water level signal S1 is input from the water level detector 6, the relay 63 is energized by the signal from the water level control section 62, the contact 63a of this relay is closed, and the auxiliary valve is closed. The solenoid 5a of No. 5 is energized, and this sub-valve 5
opens. By opening the sub-valve 5, the on-off valve device 2 described above is opened, and water is supplied into the water tank 1 via the water supply pipe 3.

When the water level in the water tank 1 rises and reaches a predetermined water level, the high water level signal S2 is input from the water level detector 6 to the water level control unit 62, and the relay 63 is demagnetized. Contact 53
a is opened, the solenoid 5a of the sub-valve 5 is demagnetized, and the sub-valve 5 is closed. By closing the sub-valve 5, the on-off valve device 2 is closed, and water supply to the water tank 1 is stopped. In this way, the water level in this water tank 1 is controlled between a predetermined low water level and a predetermined high water level.

In addition, the control device 7 is also configured to prevent water from entering the water tank 1 if the water supply cannot be stopped, for example, if the valve body 25 of the on-off valve device 2 gets stuck with a foreign object or the sub-valve 5 breaks down. An abnormal water level control section 65 is provided to deal with the case where the water level of the water rises abnormally. This abnormal water level control section 65 excites the relay 64 when the abnormal water level signal S3 from the water level detector 6 is input, and the contact 64a of this relay is closed. The closing of this contact 64a supplies power to the alarm buzzer 57, which outputs an alarm and also lights up the alarm lamp 58. Note that 56 is a buzzer stop switch, and by opening this switch, the sounding of the buzzer can be stopped. In addition, the contact 64 of the relay 64 described above
The relay 60 is configured to be energized by closing of a. A timer 59 is connected in series to this relay 60. This timer 59
is activated by being energized, and is configured to open its contacts and cut off energization after a predetermined short period of time has elapsed. Also, this relay 6
0 has a normally open contact 60a and a normally closed contact 60b.
The normally open contact 60a is connected to the solenoid 40 of the electromagnetic valve mechanism 38 of the first pressure relief passage 41 of the on-off valve device 2, and the normally closed contact 60b
is connected to the solenoid 35 of the electromagnetic valve mechanism 33 of the second pressure guiding passage 32.

Therefore, when the abnormal water level signal S3 is input, the contact 64a of the relay 64 is closed, the alarm buzzer 57 sounds, and the alarm lamp 58 stops. Also, along with this, relay 60
is energized, its contact 60a is closed, and its contact 60b is opened. Therefore, the electromagnetic valve mechanism 38 of the on-off valve device 2 is opened, and the pressure in the pressure chamber is released through this second pressure release passage. Therefore, this on-off valve device 2 opens and its valve body 25 rises. As a result, water flows between the valve body 25 and the valve port 24, and the valve body 25
Any foreign matter that was caught in the machine will be removed. Next, when a predetermined period of time has elapsed, the timer 59
is activated, energization to relay 60 is cut off, contact 60a is opened, and contact 60b is closed. Therefore, the solenoid valve mechanism 38 of the second pressure relief passage 41
At the same time, the solenoid valve mechanism 33 of the second pressure guiding passage 32 opens, and pressure is generated in the pressure chamber 28 through this second pressure guiding passage. be introduced. Therefore, this on-off valve device 2 is again in the closed state. If the above-mentioned sub-valve 5 fails and is not closed, and this on-off valve device 2 is not closed due to this, this pressure chamber 28 is opened via the first pressure relief passage 44. Although it remains open to the outside, this first pressure relief passage 44 has a small diameter and acts as an orifice that limits the flow of water, and within this pressure chamber 28 there are first and second pressure relief passages. Since high pressure water is introduced through the pressure chamber 28, pressure is accumulated in the pressure chamber 28.
Even if the sub-valve 5 remains open, the on-off valve device 2 is closed. Therefore, according to such a water supply control system, if the valve body of this on-off valve device becomes stuck or caught in a foreign object and cannot be completely closed, or if the sub valve 5 Even if the valve fails and cannot be closed, this opening/closing valve device 2
The valve can be closed automatically.

Note that the present invention is not limited to the above embodiments. For example, the type of on-off valve is not necessarily limited to the one described above, and other types may be used. Regardless of the type of on-off valve, by opening and closing the on-off valve once, foreign objects caught in the valve body are removed and the valve body is released. .

[Effects of the Invention] As described above, the present invention is effective when a foreign object is caught in the valve body of an on-off valve, or the valve body is caught, and the valve body does not close completely. To,
These problems can be automatically eliminated by opening the on-off valve once. Therefore, this has great effects, such as being able to prevent a large amount of water from flowing out wastefully from the aquarium.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which FIG. 1 is a schematic diagram of the entire system, FIG. 2 is a vertical sectional view of the on-off valve device, and FIG. 3 is a circuit diagram of the control device. 1...Water tank, 2...Opening/closing valve device, 5...Sub-valve,
6... Water level detector, 7... Control device, 25... Valve body, 27... Pressure receiving body, 28... Pressure chamber, 31...
First pressure path, 32...Second pressure path, 33
...Solenoid valve mechanism, 38...Solenoid valve mechanism, 41...
A first pressure relief passage, 44... a second pressure relief passage.

Claims (1)

[Claims] 1. An on-off valve device that controls water supply into the aquarium, a water level detector that detects the water level in the aquarium and outputs an abnormal water level signal when the water level rises above the normal water level, and a water level detector that outputs an abnormal water level signal when the water level rises above the normal water level. When an abnormal water level signal is received, a valve open signal is sent to the on-off valve device to open the on-off valve device for a predetermined period of time, and then a valve close signal is sent to this on-off valve device to close this on-off valve device. A water supply control equipment characterized by comprising a control device for controlling a valve.