JPH11159176A - Overflow prevention equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To expose the tip opening of a communicating tube thereby functioning it as a siphon breaker by once raising a water supply pipe to a U-shape and connecting the top of the riser piping to a set water depth below the water surface in the water tank when a trouble has occurred. SOLUTION: Water to be purified flows from a water tank 1 to a raw water tank 5 through a water supply pipe 2. Water to be purified which came to the raw water tank 5 is sent to a filter 9 by a water supply pump 10, and filtered water flows to a treated water tank 11 and then returned to the water tank 1 through a treated water piping 13. In a case where the treated water does not return to a water tank 1 due to a trouble, the water level in the water tank 1 drops and a tip opening of a communicating tube 4 connected to the top of riser piping of the water supply pipe 2 is exposed above the water surface and air enters from the opening thereby functioning as a siphon breaker so that the outflow of the purified water from the water tank 1 is stopped. The amount of water to be purified which discharged until the functioning of the siphon breaker can be adjusted by adequately positioning the tip opening of the communicating tube 4 to a certain depth from the water surface in the water tank 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flood prevention device suitable for a circulation purification system and the like.

[0002]

2. Description of the Related Art In a circulating purification system, generally, water to be purified is sent from a water tank to an open system purification device provided below using a head, purified, and the water is circulated to the water tank. When stopping circulation, use an emergency shut-off valve attached to the piping.

[0003] However, if the emergency shut-off valve is broken, water is sent until the inside of the water tank becomes empty, which exceeds the capacity of the open system purification device. In some cases, two emergency shut-off valves are provided for the case where the emergency shut-off valve is broken. However, equipment costs are increased, and both of them may be broken, which is not certain. Also,
Even when the purified water does not circulate in the water tank due to a pump trouble or the like, the capacity of the open system purification device is exceeded. If the capacity of the open purifying device is exceeded, the open purifying device is usually provided in the machine room below the water tank, so that the machine room may be flooded and the circulation purifying system may not operate.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an overflow prevention device capable of reliably stopping water supply to an open system purification device when a trouble occurs in a circulation purification system. is there.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a method of purifying water to be purified by sending the water to be purified from a water tank to an open purifying apparatus located below the water tank through a water pipe. An overflow prevention device in a circulating purification system for returning purified water to a water tank, wherein the water supply pipe is once set up in an inverted U-shape, and the rising top and the set water level below the water tank are connected by a communication pipe. It is characterized by a prevention device.

Here, it is preferable that the water supply pipe is provided so as to communicate from the bottom of the water tank to an open system purification device located below the water tank. Further, it is preferable that the water tank is a swimming pool or a seafood tank. Furthermore, it is also preferable that the open system purification device has a rotary drum type filter.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The overflow prevention device of the present invention shown in FIG. 1 transmits purified water from a water tank 1 to be purified to an open system purifier 3 located below the water tank 1 through a water pipe 2. An overflow prevention device in a circulating purification system for returning purified water to the water tank 1 by purifying the water supply pipe 2 once in an inverted U-shape, and connecting a rising top portion with a set water level below the water tank 1. 4 is connected.

The water tank 1 and the open system purifier 3 are arranged vertically so that the water supply pipe 2 from the water tank 1 uses the head to inject the water to be purified into the raw water tank 5 of the open system purifier 3. I have. The water pipe 2 once rises in an inverted U-shape, and the communication pipe 4 connects the rising top and below the set water level of the water tank 1. A butterfly valve 6 is attached to the water pipe 2.

On the other hand, due to the fluctuation of the water level in the water tank 1,
The water tank 1 is provided with an overflow groove 7 in order to purify the water to be purified overflowing from the waste water without waste, and an outflow pipe 8 for sending the received water to the raw water tank 5 of the open system purification device 3 is provided in the overflow groove 7. It is connected.

The open system purifying device 3 preferably has a rotary drum type filter 9 as shown in FIG. 1, and a raw water tank 5 for receiving purified water from the water tank 1 and a rotary drum type filter from the raw water tank 5. Purified water feed pump 10, which feeds water to 9,
Treated water tank 1 receiving purified water from rotary drum type filter 9
1 is also provided.

[0011] The rotary drum type filter 9 introduces water to be purified into the inside of a drum having a filter cloth attached to its body, and raw water passes through the filter cloth due to the head difference between the inside and outside of the rotating drum. This is a filter that separates the solid and liquid.

In order to circulate the purified water to the water tank 1, the open system purification device 3 and the water tank 1 are provided with a treated water feed pump 1
2 is connected by a treated water pipe 13 attached thereto, and a check valve 14 is provided downstream of the treated water feed pump 12.

In the present invention, the water supply pipe 2 is connected to the water pipe 2 shown in FIG.
It is preferable that the water tank 1 is provided so as to communicate with the open system purification device 3 as shown in FIG. By doing so, the sediment accumulated in the water tank 1 can also be removed.

In the present invention, if the water tank 1 is a swimming pool or a fish tank, it can be easily attached to an existing circulation purification system. Raw water tank 5 of filter 9
In addition, since the treatment water tank 11 is usually designed to have a capacity of about 3 to 5% of the pool water amount, it can be used without any problem in terms of equipment, which is preferable.

In the circulation purification system shown in FIG. 1, the water to be purified flows from the water tank 1 to the raw water tank 5 through the water pipe 2.
On the other hand, the overflow water flowing out into the overflow groove 7 flows into the raw water tank 5 provided in the machine room below the water tank through the outflow pipe 8. The purified water flowing into the raw water tank 5 is sent to the rotary drum type filter 9 by the purified water feed pump 10, and the filtered water flows into the treated water tank 11, and is passed through the treated water pipe 13 by the treated water feed pump 12. It is returned to the water tank 1.

When a situation occurs in which the treated water does not return to the water tank 1 due to a trouble of the treated water water supply pump 12 or the like, the water to be purified flows into the raw water tank 5 through the water supply pipe 2 for a while. However, since the treated water is not returned to the water tank 1, the water level in the water tank 1 drops, and when the opening at the tip end of the communication pipe 4 connected to the rising top of the water pipe 2 is exposed from the water surface, air enters through the opening and acts as a siphon breaker. As a result, the outflow of the water to be purified from the water tank 1 stops. The amount of water to be purified before the siphon breaker is activated can be adjusted depending on the position of the opening of the end of the communication pipe 4 below the water surface of the water tank 1. Water runoff can be reduced. In the case of a standard pool, it is 1-2 cm below the surface of the water, and can be freely adjusted in the range of about 0-4 cm. While the circulation is stopped, the water to be purified in the raw water tank 5 and the purified water in the treated water tank 11 remain stored. When the trouble is resolved and the treated water is returned to the water tank 1 again, the water level of the water tank 1 rises, the opening of the communication pipe 4 becomes lower than the water level, and when the water level exceeds the rising top of the water pipe 2, the circulation purification is performed. Restart automatically.

A check valve 14 provided in the treated water pipe 13 is provided in the water pipe 2 to prevent backflow from the water tank 1 when the treated water is no longer returned to the water tank 1. The butterfly valve 6 is provided with a discharge pipe 15 and a valve 16 for adjusting the amount of purified water to be supplied to the open system purification device 3 and for discharging water when the water tank 1 is washed.

Since such an overflow prevention device does not need to change the existing positional relationship between the water tank and the open system purification device, not only does the new circulation purification system but also the existing circulation purification system require no major work. It can be conveniently applied.

[0019]

In the overflow prevention device of the present invention, the water supply pipe rises once in a U-shape, and the top of the riser and the lower part of the water level of the water tank are connected by a communication pipe, thus acting as a siphon breaker. When the treated water that has been purified cannot return to the water tank due to troubles, etc., the water level of the water tank falls, and the opening at the tip of the communication pipe is exposed, which acts as a siphon breaker. Stop. Therefore, it is not necessary to use the emergency shut-off valve required in the conventional system, and it is possible to inexpensively and surely prevent flooding. At the same time, when the emergency shut-off valve is broken in the conventional system, the machine room may be flooded, but this can be avoided reliably, so that the system can be operated reliably. .

Further, when the water pipe is provided at the bottom of the water tank, it is possible to remove substances precipitated in the water to be purified. Furthermore, when the aquarium is a swimming pool or aquarium for fish and shellfish, the overflow prevention device of the present invention can be introduced into an existing circulation purification system by simple construction.

[Brief description of the drawings]

FIG. 1 is a schematic view of a flood prevention device according to an embodiment of the present invention.

FIG. 2 is a schematic view of a flood prevention device according to another embodiment of the present invention.

[Explanation of symbols]

 1: Water tank 2: Water supply pipe 3: Open system purification device 4: Communication pipe 5: Raw water tank 6: Butterfly valve 7: Overflow groove 8: Outflow pipe 9: Rotary drum type filter 10: Purified water water supply pump 11: Treatment Water tank 12: Treated water feed pump 13: Treated water piping 14: Check valve 15: Discharge pipe 16: Valve

Claims (5)

[Claims] 1. Circulation of purified water from a water tank to be purified through a water pipe communicating with an open system purification device located below the water tank, purification by the open system purification device, and return of the purified water to the water tank. An overflow prevention device in a purification system,
An overflow prevention device characterized in that a water pipe is once raised in an inverted U shape, and a rising pipe is connected to a lower part of a water tank by a communication pipe. 2. The overflow prevention device according to claim 1, wherein the water pipe is provided so as to communicate from the bottom of the water tank to an open system purification device located below the water tank. 3. The swimming pool according to claim 1, wherein said water tank is a swimming pool.
Or the overflow prevention device according to 2. 4. The overflow prevention device according to claim 1, wherein said water tank is a fish and shellfish water tank. 5. The overflow prevention device according to claim 1, wherein the open system purification device has a rotary drum type filter.