JP3219446B2 - Wave making equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wave making device for a game facility or an experimental facility.

[0002]

2. Description of the Related Art As shown in FIG. 3, an airtight chamber 2 communicating below the surface of a pool is provided at one end of a pool 1, and an air supply valve 3 communicating with the outside air is connected to the airtight chamber 2 as shown in FIG. An exhaust valve 6 connected to a vacuum pump 5 via a suction pipe 4 and a pressure detector 7 for detecting a water level in the chamber 2 are provided. The pressure detector 7 is connected to a control device 9 via a control circuit 8. The control device 9 is further connected to the air supply valve 3 and the exhaust valve 6 via a control circuit 8 and is provided with a no-load valve 10 in the suction pipe 5 of the vacuum pump 4. 10 is known which is connected to the control device 9 via a control circuit 8. In the figure, reference numeral 11 denotes a silencer of the vacuum pump.

[0003]

However, in the conventional apparatus,
In order to discharge the air in the chamber 2 and suck up the water of the pool 1 into the chamber 2, the exhaust valve 6 is opened and at the same time the no-load valve 10 is closed, and when the water is sucked up to the required height in the chamber 2, It was necessary to close the exhaust valve 6 and open the no-load valve 10 at the same time.

In this case, the exhaust valve 6 is not closed and the no-load valve 1 is closed.
When 0 is opened, the water level in the chamber 2 decreases, and when the exhaust valve 6 and the no-load valve 10 are closed, the pressure in the suction pipe 4 is excessively reduced, and the vacuum pump 5 is overloaded, so that the exhaust valve is overloaded. 6 and the no-load valve 10 need to be controlled so as to be opened and closed alternately and synchronously. Further, when the power supply to the control device 9 is cut off, the exhaust valve 6 and the supply valve 3 are not necessarily completely closed , so that the water sucked into the chamber 2 falls,
Unintentional wave generation is performed and the no-load valve 10 may not be fully opened, which may cause an unexpected overload of the vacuum pump 5 and is dangerous.

The present invention has been developed in order to address the above-described problems. The present invention controls the exhaust valve and the no-load valve to open and close alternately in synchronization with each other. The purpose is to fully close the valve and the air supply valve and fully open the no-load valve.

[0006]

[0007]

Means for Solving the Problems To achieve the above object,
The configuration of the present invention will be described with reference to FIG. 2. In the present invention, an airtight chamber 2 communicating below the surface of the pool is provided at one end of a pool 1, and an air supply valve 3 communicating with the outside air is provided in the airtight chamber 2. provided a Renru exhaust valve 6 and a pressure detector 7 to a vacuum pump 5, a control unit 9 connected to the pressure detector 7 is provided, the no-load valve 10 is provided on the suction side of the vacuum pump 5, the control
The intake valve 3, the exhaust valve 6 and the no-load valve 1
In the wave making device whose opening and closing is controlled to be 0 , the supply air valve 3, the exhaust valve 6, and the no-load valve 10 are respectively provided with driving hydraulic actuators 3a, 6a, 10a, and hydraulic actuators 3a, 6a, Solenoid valve 3 for controlling 10a
b, 6b, the actuator 3a of the control device 9 provided with a 10b, 6a, wherein the hydraulic control unit 9a for 10a is separated into a electric control unit 9b of the solenoid valve, prior to
Power cutoff of the hydraulic control device 9a and the electric control device 9b
When disconnected, the hydraulic actuators 3a, 6a, 10a
By applying hydraulic pressure, the air supply valve 3 and the exhaust valve 6 are fully closed.
Then, the pressure oil is stored so that the no-load valve 10 is fully opened.
It is characterized by the provision of a cumulator 9c .

[0008]

According to the present invention, when water is sucked into the chamber by the above-described means, the pressure in the suction pipe falls by closing the no-load valve provided in the suction pipe of the vacuum pump, and the pressure difference between the suction pipe and the chamber automatically decreases. The check valve opens, and the air in the chamber is exhausted by the vacuum pump. This causes the water in the pool to be drawn into the chamber.

[0009]

[0010] By the pressure oil stored in the accumulator, the actuators of the supply valve and the exhaust valve fully close the valves,
The actuator of a no-load valve opens the valve fully. By completely closing the air supply valve and the exhaust valve, the inflow of air from the outside to the chamber is prevented, and the water in the chamber does not fall, thereby preventing wave generation. On the other hand, when the no-load valve is opened, air from the outside is introduced into the vacuum pump suction side, thereby preventing the vacuum pump from being overloaded.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIG. 1. In the drawing, reference numerals 1 to 11 are the same as those of the conventional example shown in FIG. Therefore, the description is omitted. In the first embodiment of the present invention, the exhaust valve 6 is formed as a check valve for preventing the flow of the atmosphere to the airtight chamber 2.

Thus, when the air supply valve 3 and the no-load valve 10 are closed and the vacuum pump 3 is operated, the air in the chamber 2 is exhausted through the check valve 6 and the water in the pool 1 is simultaneously discharged. After sucking water into the chamber 2 and sucking water into the chamber 2, the suction pipe 4 is opened by opening the no-load valve 10.
Since the internal pressure recovers, the check valve 6 is automatically closed by the pressure difference with the chamber 2, the pressure in the chamber is maintained, the water level is maintained at the sucked position, and the overload of the vacuum pump 5 is reduced. When the outside air is introduced into the chamber 2 by opening the air supply valve 3, the sucked water is dropped and the pool 1 is wave-formed.

Next, a second embodiment of the present invention will be described with reference to FIG. 2. In FIG. 2, reference numerals 1 to 11 denote the same parts as those in the conventional example shown in FIG. . In the second embodiment of the present invention, the supply air valve 3, the exhaust valve 6, and the no-load valve 10 are respectively provided with driving hydraulic actuators 3a, 6a, 10a, and hydraulic actuators 3a, 6a, And solenoid valves 3b, 6b, 10b for controlling the control device 10a.
Are separated into a hydraulic control device 9a for the actuators 3a, 6a and 10a and an electric control device 9b for the solenoid valves 3b, 6b and 10b.

Thus, the electric control device 9b and the hydraulic control device 9
When the power supply to the supply valve a is cut off, the solenoid valve 3b and the solenoid valve 6b of the supply valve 3 and the exhaust valve 6 are turned on by the signal of the electric control device 9b via the actuator 3a and the actuator 6a. 3 and the exhaust valve 6 are fully closed, the solenoid valve 10b of the no-load valve 10 is switched via the actuator 10a to fully open the no-load valve 10, and each of the actuators 3a, 6a, 10a is connected to the accumulator 9
The supply valve 3 and the exhaust valve 6 are fully closed and the no-load valve 10 is fully opened by the pressure oil stored in c. When the air supply valve 3 and the exhaust valve 6 are fully closed, the inflow of air from the outside into the chamber 2 is prevented, and the falling of water inside is prevented, so that no wave is created and the no-load valve 10 is fully opened. As a result, air flows from the outside into the suction pipe 4 to prevent the vacuum pump 5 from being overloaded.

[0015]

[0016]

The wave making device of the present invention is constructed as described above.
Has the following effects. According to the present invention, each of a no-load valve communicating with an air supply valve, an exhaust valve, and a vacuum pump provided in a chamber is provided with a hydraulic actuator for driving, and an electromagnetic valve for controlling the actuator.
And the control unit and hydraulic control system and the electric control unit for the solenoid valve for the actuator, can we have accumulated pressure oil accumulator is provided on the pressure side of the hydraulic control circuit, electric control unit
If the source shuts off, the air supply and exhaust valves will be fully closed.
Also, make sure that the no-load valve is fully open.
Therefore, even when the power supply to the control unit is cut off, the air supply and exhaust valves are fully closed and the no-load valve is fully opened, preventing unintended wave generation and maintaining the safety without overloading the vacuum pump. Have the effect.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a first embodiment of the present invention.

FIG. 2 is a schematic view showing a second embodiment of the present invention.

FIG. 3 is a schematic view showing a conventional example.

[Explanation of symbols]

 Reference Signs List 1 pool 2 chamber 3 supply valve 3a actuator 3b solenoid valve 5 vacuum pump 6 exhaust valve 6a actuator 6b solenoid valve 9 control device 9a hydraulic control device 9b electric control device 10 no-load valve 10a actuator 10b solenoid valve

Claims (1)

(57) [Claims] An airtight chamber is provided at one end of the pool below the surface of the pool, and the airtight chamber is provided with an air supply valve connected to the outside air, an exhaust valve connected to a vacuum pump, and a pressure detector. A control device connected to the pressure detector is provided, and a no-load valve is provided on the suction side of the vacuum pump .
The intake valve, the exhaust valve, and the no-load valve are controlled to open and close.In the wave-making device, the supply valve, the exhaust valve, and the no-load valve each have a hydraulic actuator for driving; the control device is separated into the electric control device for a hydraulic control device and the solenoid valve for the actuator, the hydraulic control device and the electrical system provided with a solenoid valve for controlling the hydraulic actuator
When the power to the control device is turned off, the hydraulic
To fully close the air supply valve and the exhaust valve,
Accumulator that stores pressure oil to fully open the no-load valve
Wave-making apparatus characterized in that a motor.