JP3545924B2 - Cleaning method inside the water supply pipe of a direct pressure water supply system - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a water supply pipe inside of the cleaning method of direct pressure water supply device for cleaning the inside of the upright water supply pipe in direct pressure water supply device.
[0002]
[Prior art]
A general water supply system connects a water receiving tank arranged at the lower part of the building with an elevated water tank arranged at the upper part of the building, and connects a plurality of branch pipes to a vertical water supply pipe having an upper end connected to the elevated water tank. A home faucet is connected to each branch pipe. In addition, as a recent water supply device, the lower end of a vertical water supply pipe arranged almost vertically in the building is directly connected to the water main, and a plurality of branch pipes connected to the vertical water supply pipe and household faucets are connected, 2. Description of the Related Art There is known a direct pressure type water supply device for supplying water with pressure from a water main. In the former water supply device that has been used for a long time in the past, it is desirable to perform internal cleaning because red rust and the like are generated inside the vertical water supply pipe due to aging, and various methods for cleaning the inside of the water supply pipe have been proposed. For example, the water supply pipe inside of the cleaning method described in JP Kokoku 5-86278 is fitted with a compressed air feeding device via an adapter to the faucet of the branch tube connected to the bottom of standing water supply pipe, from the compressed air feeding device This is an effective method for cleaning the inside of a water supply pipe that is sanitary and can be performed relatively easily by sending compressed air to a water supply pipe filled with water to clean the inside of the water supply pipe.
[0003]
[Problems to be solved by the invention]
However, internal cleaning of the upright water supply pipe in the latter direct pressure water supply apparatus has not been carried out, some kind of water supply pipe inside of the cleaning method is desired. Here, it is conceivable to apply the above-described method for cleaning the inside of the water supply pipe using the compressed air feeding device also in the direct pressure water supply device, but it has been found that it cannot be simply applied. That is, similarly to a general water supply device, when a compressed air feeding device is connected to a household faucet via an adapter, and compressed air is fed from the compressed air feeding device, the compressed air flows backward to the water main. I found out.
[0004]
SUMMARY OF THE INVENTION An object of the present invention is to provide a method for cleaning the inside of a water supply pipe of a direct pressure type water supply apparatus, which can effectively clean a main water supply pipe in a direct pressure type water supply apparatus without backflow of compressed air to a water main side. Is to do.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a water supply system in which a plurality of branch pipes and household taps are respectively connected to a vertical water supply pipe connected to a water main via a water meter to fill water. by feeding the compressed air from the compressed air feeding device to the tube in the water supply pipe inside of the cleaning method of direct pressure water supply device for cleaning the interior, the parent water meter and detachment to step, to the removal unit, remove the previous A temporary receiving tank connected via piping to the main pipe located on the water main side of the main water supply unit, and one end pipe connected to the temporary receiving tank and the other end pipe connected to the vertical feed pipe side a step of Ru provided a pressurized pumping water system consisting of the a pressurizing pump connected to the open one of the faucet for the home, by the pressure pump pressurizes the water in the water receiving tank to the raised water supply pipe While feeding, pressurized air from the compressed air feeding device to the vertical feed pipe And a step of sending.
[0006]
Water supply pipe inside of the cleaning method of direct pressure water supply apparatus according to the present invention, while pressurized pumping water into standing water supply pipe as described above, because of the so feeding the compressed air to the upright water supply pipe from the compressed air feeding device, the compressed air infeed device without flowing back to the water main side compressed air from, by feeding securely in upright water supply pipe, it is possible to clean the standing water pipe effectively.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0008]
FIG. 3 is a front view showing a direct pressure water supply apparatus to which the present invention is applied.
[0009]
The multi-storey building 1 are substantially perpendicular to the standing water supply pipe 2 is arranged, the lower end of the other upright water supply pipe 2 is connected to the water mains 5 through a master water meter 3 and the water stop valve 4 Have been. In addition , a plurality of branch pipes 6a to 6n arranged on each floor are connected to an intermediate portion of the water supply pipe 2, and each of the branch pipes 6a to 6n has a shutoff valve 7a to 7n and a household water dispenser 8a to 8n. Is connected to each household faucet 9a-9n.
[0010]
FIG. 1 is a front view of a direct pressure type water supply device showing a state in the middle of a work in which a method for cleaning the inside of a water supply pipe of the direct pressure type water supply device according to one embodiment of the present invention is used.
[0011]
Now, in the case where the water supply pipe including the water supply pipe 2 and the branch pipes 6a to 6n is to be cleaned, as a first preparation work, a branch pipe on the lowest floor connected to the lowermost part of the water supply pipe 2 shown in FIG. The water stop valve 7a of 6a is closed, the household water dispenser 8a is removed, and then, as shown in FIG. The compressed air feeding device 11 includes a compressor 12 and a controller 13 and the like, and sends out compressed air that has been pressurized by the compressor 12 at predetermined intervals by the controller 13. Further, the controller 13 controls each valve and the like so that the single-shot delivery of the compressed air every predetermined time is continued for a predetermined time. In the above-mentioned first preparation work, the compressed air feeding device 11 may be connected to the household faucet 9a via an adapter, but the compressed air feeding device 11 is connected to the detached portion of the household water dispenser 8a. Therefore, there is no need to enter into a specific home and perform it, and there is no need to concentrate on this specific home and cause much trouble.
[0012]
Next, as a second preparatory operation, the water stop valve 4 located on the side of the main water supply pipe 5 of the standing water supply pipe 2 shown in FIG. 1 is closed, and the water meter 3 is removed. As shown in the enlarged view of the part, the pressurized water supply device 14 is attached to the detached part. The pressurized water supply device 14 is a temporary water receiving tank connected to a main pipe 15 located on the water main 5 side of the water main unit 3 before removal via the pipe 16 and the water main unit 3 after removal. 17, a ball tap valve 18 provided at an end of the pipe 16 so as to control the amount of water supplied to the temporary water receiving tank 17, and a pipe 19 at one end connected to the temporary water receiving tank 17 and a pipe 20 at the other end connected to the temporary water receiving tank 17. It consists of a pressurizing pump 22 connected to a water supply pipe side pipe 21 located on the water supply pipe 2 side of the main water supply unit 3 before removal. Here, a flexible pipe or a PP pipe can be used as the pipe 16. The second preparation work and the first preparation work may be performed in reverse order or may be performed in parallel.
[0013]
After these preparations are completed, the water stop valve 4 is opened, and water is supplied from the water main 5 to the temporary water receiving tank 17. When the temporary water receiving tank 17 reaches a predetermined amount of water, the ball tap valve 18 closes, and when the amount of water decreases, the ball tap valve 18 opens, thus maintaining the temporary water receiving tank 17 at a predetermined amount of water. Thereafter, when the pressurizing pump 22 is operated to operate the pressurized water supply device 14, the water in the temporary water receiving tank 17 is supplied to the standing water supply pipe 2 via the standing water supply pipe 21 while being pressurized. . At this time, since the water pressure in the branch pipe 6a on the top floor of the building 1 may be 5 atm or more, the pressurized water supply device 14 can be relatively small.
[0014]
On the other hand, on the compressed air feeding device 11 side, the water shutoff valve 7a is opened, first, one of the household faucets on an arbitrary floor is opened, and the other household faucet is closed to operate the compressed air feeding device 11. Then, since water pressure is applied from the pressurized water supply device 14 to the inside of the vertical water supply pipe 2, the compressed air supplied from the compressed air supply device 11 is supplied to the vertical water supply pipe 2 and the branch pipe 6a filled with water.上昇 6n is effectively moved upward in the water supply pipe and discharged into the atmosphere from one open household faucet. At this time, the mixture of the compressed air and water collides with the water supply pipe 2 and the inner walls of the branch pipes 6a to 6n to clean the same. Thereafter, the other household faucet was opened, one open household faucet was closed, and these procedures were repeatedly performed in order to wash and remove the inside of the water supply pipe 2 and the branch pipes 6a to 6n. Red rust and the like can be discharged from each household faucet 9a to 9n.
[0015]
In this way, since the inside of the water supply pipe 2 and the branch pipes 6a to 6n are cleaned by the compressed air, it is sanitary without foreign substances remaining in the water supply pipe 2 and the branch pipes 6a to 6n. In addition, since the water pressure is applied and supplied to the inside of the vertical water supply pipe 2 by the pressurized water supply device 14, the water is filled without the compressed air sent from the compressed air supply device 11 flowing back to the water main 5. The compressed air can be effectively fed into the standing water supply pipe 2 side. In the above-described embodiment, the household water dispenser 8a of the branch pipe 6a located on the lowest floor is removed, and the compressed air feeding device 11 is connected to the detached portion. After removing the water dispensers 8b to 8n and connecting the compressed air feeding device 11 to the detached portions, or after finishing the washing operation from the position of the household dose dispenser 8a, remove the household dose dispenser on the middle floor and remove the dispenser. The compressed air feeding device 11 can be connected again, and the same washing operation can be repeated. Thus, washing can be performed from a plurality of locations. Therefore, the compressed air feeding device 11 can be made small.
[0016]
Incidentally, compressed air infeed device 11, standing other parts that can be fed intermittently compressed air to the water supply pipe 2, for example, may be connected to the left end of the upright water supply pipe side pipe 21 in FIG. 2.
[0017]
【The invention's effect】
As described above, the method for cleaning the inside of the water supply pipe of the direct pressure water supply apparatus according to the present invention is to operate the compressed water supply apparatus while operating the pressurized water supply apparatus to supply pressurized water to the vertical water supply pipe. Since compressed air is fed into the vertical water supply pipe, the compressed air from the compressed air feeder can be reliably sent to the vertical water supply pipe side without flowing back to the water main pipe side, thus performing efficient internal cleaning. be able to.
[Brief description of the drawings]
FIG. 1 is a side view showing a direct pressure type water supply device in a working state in which a method for cleaning the inside of a water supply pipe of a direct pressure type water supply device according to an embodiment of the present invention is used.
FIG. 2 is an enlarged side view showing another main part of the direct pressure water supply device shown in FIG.
FIG. 3 is a side view of a direct pressure type water supply device to which the present invention is applied.
[Explanation of symbols]
2 Vertical water supply pipe 3 Main water supply unit 5 Water mains 6a-6n Branch pipes 8a-8n Household water supply units 9a-9n Faucet 11 Compressed air feeding device 14 Pressurized water supply device 17 Temporary water receiving tank 22 Pressurized pump

Claims (1)

A plurality of branch pipes and each household faucet are connected to a vertical water supply pipe connected to a water main via a water meter, and compressed air from a compressed air feeding device is supplied to the water-filled water supply pipe. In a method of cleaning the inside of a water supply pipe of a direct pressure type water supply apparatus for feeding and cleaning the inside,
A detachment to step the parent water meter, this removal unit, a temporary water receiving tank connected to the main pipe side pipe located on the water main side of the removal before the parent water meter through a pipe, one end a step of the pipe Ru provided a pressurized pumping water device comprising a pressurizing pump connected to pipe the other end connected to the temporary water receiving tank standing water supply pipe side, open one faucet for the household, while feeding the said start-water supply pipe by pressurizing the water in the water receiving tank by the pressure pump, direct pressure feed water, characterized in that it consists of a process for feeding compressed air to said start-water supply pipe from the compressed air feeding device How to clean the inside of the water pipe of the device.

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