JPS6372395A - Method for washing water supply and distributing pipe - Google Patents

Abstract

PURPOSE:To enhance washing efficiency, by constituting a drainage system by combining a drain tank having a drain pipe with the terminal of a water supply pipe. CONSTITUTION:The first washing system 10 and the second washing system 11 are combined with a water pumping-up pipe system 5 and a water supply pipe system 9, and, further, a bypass passage and an ultraviolet sterilizing apparatus 44 having primary and secondary side opening and closing valves 42, 43 are interposed to be connected to the secondary side of the ozone mixer 39 of the second washing system 11 to form a finish washing system 45. Flowing water enters a case 48 from an inlet 49 to flow to a water supply pipe 7 from an outlet 50 and receives the irradiation of ultraviolet rays from an ultraviolet lamp 47 in the case 48 to sterilize bacteria in the flowing water. By this method, the re-generation of rust is prevented and washing effect can be kept.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for cleaning water supply pipes in office buildings, condominiums, hotels, hospitals, etc.

[Conventional technology]

When water supply pipes in office buildings, condominiums, hotels, hospitals, etc. (hereinafter referred to as "buildings") become old, water called red water begins to come out. This is caused by the iron in the pipes (mainly steel pipes) that make up the water supply and distribution pipes being molten and precipitated as ferric hydroxide, which then comes out as iron rust, which is iron oxide (commonly known as hengara). in.

Drinking water 1. Drinking water can affect the human body as water for daily life such as eating and washing, and also has an undesirable effect on equipment such as hot water supply and air conditioning. The causes of this red water are the proliferation of bacteria due to the deterioration of the quality of the water source, the addition of purification agents to prevent this, the reduction in pipe durability due to the purification agents (chemical agents), and the progress of corrosion of the iron surface. Rust occurs in the water supply and distribution pipes due to the combined effects of many causes, which become rust lumps and adhere to the inner surface of the pipes, causing blockages and producing unpleasant odors.

For this reason, the method involves completely replacing the water supply and distribution pipes.

Many cleaning methods have been developed and put into practice, such as a pipe rehabilitation method called sandblasting in which an abrasive such as sand is introduced into the pipe, and a pipe lining method.

[Problem that the invention seeks to solve]

However, completely replacing the water supply and distribution pipes is very time-consuming, especially if the pipes are corroded to the extent that they are unusable, and in some places the walls of the building may have to be destroyed, which can be expensive.

In the sandblasting method, the abrasive that is put into the pipe is a powder, but not a fluid, so it is difficult to put it in.The inside of the pipe through which the abrasive is passed must be completely dried at once, and considerable pressure is applied to pass the abrasive. This requires large-scale equipment and is time-consuming. The same applies to the pipe two-inning method, and it is undeniable that either method takes time to process, resulting in a longer water cutoff time.

Therefore, this invention requires relatively little effort.

With a simple device, without introducing solids such as abrasives into the pipes,
This invention aims to provide a cleaning method Z that can clean water supply and distribution pipes in a short time (first invention). Further, after cleaning is completed, the cleaning effect is maintained by sterilizing bacteria in the water supply so that rust does not easily occur again (second invention).

[Means for solving problems]

In order to achieve the above object, this invention.

The water supply and distribution pipes of the building are divided into the water supply pipe system that reaches the water receiving tank, water pump, water pump, and elevated water tank, and the water supply pipe system that runs from the vicinity of the secondary side of the elevated water tank via the water supply pipe to the water faucet, and the above-mentioned A drainage tank with a drain pipe is combined with the water supply pipe system to form a drainage system, and a washing pump e (M, meter, ozone mixer with an ozone generator) is installed on the secondary side of the drainage tank and a pump.
Interposed between the next side and the part as close as possible to the starting end of the pumping pipe.
The first cleaning system for cleaning the pumping pipe system by connecting it? A cleaning pump is installed as close as possible to the starting end of the water supply pipe on the secondary side of the elevated water tank.

A flow meter and an ozone mixer with an ozone generator are successively interposed and connected to form a second cleaning system for cleaning the water supply pipe system, and a bypass path and on-off valves on the primary and secondary sides! A finishing cleaning system is formed by interposing and connecting an ultraviolet sterilizer with a UV sterilizer to the secondary side of the ozone mixer of the second cleaning system, and injects a high amount of ozone into the flowing water in both the pumping pipe system and the water supply pipe system. While injecting the slime and rust in each pipe system, it is removed and drained into the above-mentioned wastewater tank, taken out from the drainage pipe system, and the water flowing from the water supply pipe system from the elevated water tank is sterilized with ultraviolet rays using an ultraviolet sterilizer. Finish cleaning is performed (first invention). The building's water supply and distribution pipes are further divided into a pumping pipe system that reaches the water receiving tank, water pump, water pump, and elevated water tank, and a water supply pipe system that runs from the secondary side of the elevated water tank via the water supply pipe to the water tap. A drainage tank with a drainage pipe is combined with the above water supply pipe system to form a drainage system, and a cleaning pump, a flow meter, and an ozone mixer with an ozone generator are sequentially installed on the secondary side of the drainage tank and the secondary side of the pump. A first cleaning system for cleaning the pumping pipe system is formed by interposing and connecting it with a part as close as possible to the starting end of the pumping pipe,
Install a cleaning pump as close as possible to the starting end of the water supply pipe on the secondary side of the elevated water tank.

A flow meter and an ozone mixer with an ozone generator are successively interposed and connected to form a second cleaning system for cleaning the water supply pipe system, and an ultraviolet sterilizer having a bypass path and on-off valves on the primary and secondary sides is installed. Finishing cleaning system by intervening and connecting to the secondary side of the ozone mixer of the second cleaning system? Formation of high concentrations of ozone in the running water within the pipe system, both in the lift pipe system and the water supply pipe system? While injecting slime, rust, and rust lumps in each pipe system, the slime, rust, and rust lumps in each pipe system are removed and drained into the above-mentioned drainage tank, and taken out from the drain pipe system, and then the water flowing through the water supply pipe system from the elevated water tank is used with an ultraviolet sterilizer. Sterilize with UV rays and finish cleaning. Although the second cleaning system is removed, the ultraviolet sterilizer is left in place so that water sterilized by ultraviolet rays can be continuously supplied afterwards (second invention).

[For production]

In the lifting pipe, water is flowed from the drainage tank through the first cleaning system to the lifting pipe and then to the elevated water tank using the Ponto pump of the first cleaning system, during which highly concentrated ozone is released in the first cleaning system. The ozone is mixed into the flowing water in the pipeline through the ozone mixer 2 from the ozone generator. Since the ozone generator has strong oxidizing power, the oxidation of slime, rust, and rust lumps is promoted and washed away by the pressure of running water. And slime.

After removing and draining rust and rust lumps, the oxidizing action of ozone creates a coating on the inner surface of the pipe to prevent new rust from adhering.

In the water supply pipe system, does the ozone mixer produce the same higher concentration of ozone than the second cleaning system ozone generator? It is mixed into the running water from the elevated water tank, and as it flows into the water supply pipes, the strong oxidizing power of ozone is used to remove and drain slime, rust, and rust lumps, and create a new coating on the inner surface of the pipes. This will prevent rust from forming. In addition, the slime, rust, and rust lumps removed and discharged from the pumping pipe are taken out via the elevated water tank or not through the bypass passage t through the °C water supply pipe, and from the drain tank through the drain pipe, or are taken out as appropriate within the pumping pipe. The water is discharged into the drainage system via a bypass path using running water that flows backwards. In this way, by utilizing the properties of ozone, both the pumping pipe system and the water supply pipe system can be cleaned and treated in a short time.

Next, the water flowing from the water supply pipe system from the elevated water tank is sterilized by ultraviolet rays using an ultraviolet stage device, bacteria in the water supply is sterilized, and the pipes are finished and cleaned to prevent slime from adhering to them (first invention). .

After finishing cleaning, the first water pipe is removed from both the pumping pipe system and the water supply pipe system. Although the second cleaning system is removed, the above-mentioned ultraviolet sterilizer is not removed and the water in the water supply pipes is continuously subjected to ultraviolet sterilization, causing bacterial growth? By continuing to prevent this, the above-mentioned cleaning effect is maintained and the generation of slime, rust, and rust lumps is prevented (second invention).

〔Example〕

This invention will be described in detail below. The overall structure of water supply and distribution pipes varies depending on the contents of the 4 items.

Still, water supply and distribution pipe water tank 1. Lifting pump 2゜ Lifting pipe 3
．． and a pumping pipe system 5 leading to the elevated water tank 4.

Water supply faucet 8 from the elevated water tank 40 secondary side vicinity 6 via water supply pipe 7
A first cleaning system 10 and a second cleaning system 11 are incorporated into the roughly divided water supply pipe system 5 and water supply pipe system 9, respectively.

First, a drainage tank 14 with a drainage pipe 13 is combined with the end 12 of the water supply pipe 7 to form a drainage system 15. Reference numeral 16 denotes a drainage pump, which is used to appropriately take out drained slime, rust, and rust lumps from the drainage tank 14.

The first cleaning system 10 includes a cleaning pump 17. The ozone mixer 20 equipped with a flow meter 18 and an ozone generator 19 is successively interposed and connected between the secondary side of the drainage tank 140 and the downstream side of the pump 20 to the part 21 as close to the starting end of the pumping pipe 3 as possible to clean the pumping pipe system. It was used for A centrifugal pump is used as the cleaning pump 17, and a floating flowmeter can be used as the flowmeter 18, which allows the degree of floating of the float rod 22 to be visually checked on a dial 23. The ozone generator 19 is of a silent discharge type, and receives oxygen from the oxygen cylinder 24 and transfers it to the
000 ppm (14'1) (1) high aliIte,
The amount of ozone generated is t 19 g/h (1'/W?) (7) and is supplied to the pipeline by applying a discharge pressure t of 4 Y/- with the inner L pump. The entire device is small, lightweight, and can be carried and installed in a place where space is limited as it is a box-type item that is easy to carry via the handle 25. Since fluid pressure is applied to the first cleaning system 10 by the cleaning pump 11, high-concentration ozone is mixed into the pipe line under a high pressure of 4 tons per square meter, and further via the ozone mixer 20. The primary side of the ozone mixer 20 is connected to the flow meter 18, and the secondary side is connected to a part 21 near the starting end of the pumping pipe 3, and an ozone introduction nozzle 27 is installed near the inlet of the primary side of the cylindrical body 260. A mixing rod 28 disposed in the longitudinal direction inside the cylindrical body 26 allows water to pass therethrough.
The idea is to mix gas (ozone) into liquid (flowing water) as light while micronizing it.

In Figure 2, 29 is an oxygen pressure regulator, 30 is an oxygen hose, and 31
3 shows an oxygen flow meter, 32 a power cord, and 33 an ozone hose.

A cleaning pipe 34 is extended from the secondary side of the ozone mixer 200 of the first cleaning system 10 to the receiving water WJ1, and the first bypass pipe 3
5 is extended to the drainage tank 14.

The second cleaning system 11 includes a cleaning pump 36 and a total of 37
．． An ozone mixer 39 with an ozone generator 38 is sequentially interposed and connected to clean the water supply pipe system. These cleaning pumps 36. Flow meter 37. The ozone mixer 39 with the ozone generator 38 has the same contents as those of the first cleaning system 10, so a description thereof will be omitted. In addition, 40 is the second bypass pipe, which connects the elevated water tank 40 primary side and the ozone mixer 3902.
Connected to the next side.

As described above, the first cleaning system 10 is connected to the pumping pipe system 5 and the water supply pipe system 9.
and the second cleaning system 11, and furthermore, the bypass passage [sixth bypass pipe 41] and the on-off valves 42 and 43 on the primary and secondary sides.
An ultraviolet stage tooth device 44 having . The ultraviolet sterilizer 44 has a double quartz tube 45 surrounding an ultraviolet lamp body 46 and an ultraviolet lamp 47.
Several (four in FIG. 4) hanging down inside a vertical cylindrical case 48 made of stainless steel. The running water enters the inside of the case 48 from the inlet 49, fills up there, and flows from the outlet 50 to the water supply pipe 7, but when it is irradiated with ultraviolet light from the ultraviolet lamp 47 inside the case 48, bacteria in the running water are sterilized. In addition, 511 = Acoustic sensor detects sound when the quartz tube 45 is damaged by water hammer or cracks occur or other abnormalities occur in the ultraviolet lamp 47 and detects the opening/closing valves on the primary and secondary sides 42.43x It is set to close automatically.

Above first cleaning system 10. Second cleaning system 11. Finish cleaning system 4
5. By forming the drainage system 15χ in combination with the water supply and distribution pipes of the building, the following cleaning process is performed.

(4) While injecting high-concentration ozone into the flowing water in both the pumping pipe system 5 and the water supply pipe system 9, slime, rust, and rust lumps in each pipe system are combined with the above-mentioned drain tank cleaning system 11. Both pipe systems 10 and 11 can be cleaned with ozone, and the cleaning time can be considerably shortened.

Although cleaning processing time depends on the size of the building, it can be done in about two days for an eight-story office building. High concentrations of ozone exhibit extremely strong oxidizing properties, oxidizing slime, rust, and rust lumps until they crumble and can be easily washed away by water pressure. At the same time, it creates a coating on the inner surface of the pipe to prevent new rust from forming. Then, the water flowing through the water supply pipe system 9 from the elevated water tank 4 is sterilized with ultraviolet rays in an ultraviolet sterilizer 44 for final cleaning. This UV sterilization kills bacteria and prevents the recurrence of slime, rust, and rust galls.

0) The elevated water tank 4 and the water receiving tank 1 will be cleaned by the first cleaning system 10. If the water from the lift pipe 3 is passed through the elevated water tank 4 and into the water supply pipe 7, the lift pipe 3 and the elevated water tank 4''lt can be cleaned together with the ozone cleaning in the first cleaning system 10, and the water receiving tank 1 can be cleaned as follows. All you need to do is to cut off the water supply to the 52 ft temporary water supply system described above and apply ozone-containing running water from the first cleaning system 10 to the cleaning pipe 34. Alternatively, the elevated water tank 4 may be cleaned using the same method.

(C) Finish cleaning is performed by sterilizing the flowing water in the water supply pipe system 9 from the elevated water tank 4 with ultraviolet rays in the ultraviolet sterilizer 44.

By the way, FIG. 1 shows a temporary water supply system 52.

This temporary water supply system 52 makes it possible to separately supply drinking water and other water for daily use while the existing water supply and distribution pipes are in a state of water cut-off, as described above, and are being cleaned as described above.
It is equipped with a temporary pipe 55 having one end connected to the pressure tank 54 and the water receiving 1111 and the other end connected to the water tap 8. This temporary water supply system 52 is not necessary when there is no need to separately supply domestic water when cleaning the thermal water supply pipe.

Furthermore, the ultraviolet sterilizer 44 used for final cleaning can be used continuously to maintain the cleaning effect (second invention). That is, after finishing cleaning, the water pumping pipe system 5 and the water supply pipe system 9
0 from both 1st ° 2nd cleaning system 10.11'? : Although it is removed, the ultraviolet sterilizer 44 is not removed and remains so that water sterilized by ultraviolet rays can be supplied afterwards. Lifting pipe system 5
Compared to the water supply pipe system 9, water flows every time the water tap 8 is opened, and slime, rust, and rust lumps are more likely to occur in the water supply pipe system 9 than in the pumping pipe system 5. In particular, it actively and intensively sterilizes the flowing water of the water supply pipe system 9 to prevent slime, rust, and rust lumps from reoccurring, and at the same time to maintain the effectiveness of the cleaning.

〔Effect of the invention〕

This invention is as explained above.

Water supply and distribution pipes in buildings can be cleaned in a short time using a simple device with relatively little effort and without introducing solids such as abrasives into the pipes (first invention).

In addition, it has the excellent advantage of maintaining the cleaning effect while preventing the re-occurrence of slime, rust, and rust lumps, and is economical due to the short treatment time, so it is used in the water supply pipe system of many buildings. It can be revived and prevent the occurrence of red water.

Note that if the elevated water tank and the water receiving tank are also cleaned as shown in the embodiment, the water supply and distribution pipes can be cleaned more thoroughly, and the maintenance and management of the water supply and distribution pipes after cleaning becomes easier.

[Brief explanation of the drawing]

FIG. 1 is a water supply and distribution pipe system diagram showing an embodiment of the cleaning method of the present invention. FIG. 2 is an explanatory diagram of a combination of cleaning devices constituting a first cleaning system. FIG. 5 is a sectional view of the ozone mixer used in the first cleaning system. Figure 4 is a cross-sectional view of the ultraviolet sterilizer, and Figure 5 is a cross-sectional view of the ultraviolet sterilizer.
It is a cross-sectional view along the arrow VV line in the figure. 1... Water receiving tank 3... Lifting pipe 4... Elevated water tank 5... Lifting pipe system 7... Water supply pipe 9... ... Water supply pipe system 10 ... First cleaning system 11 ... Second washing system 15 ... Drainage system 19 ... Ozone generator 20 ... ... Ozone mixer 44 ... Ultraviolet sterilizer 45 ... Finish cleaning system 52 ... Temporary water supply system Figure 2

Claims (2)

[Claims] (1) Water supply and distribution pipes of buildings to water tanks, pumps, pumping pipes,
The water supply pipe system is divided into a pumping pipe system leading to the elevated water tank, and a water supply pipe system running from the vicinity of the secondary side of the elevated water tank via the water supply pipe to the hydrant, and a drainage tank with a drain pipe is combined at the end of the above water supply pipe. A cleaning pump, a flow meter, and an ozone mixer equipped with an ozone generator are successively interposed and connected between the secondary side of the drainage tank and the secondary side of the lifting pump, as close to the beginning of the lifting pipe as possible. A cleaning pump, a flow meter, and an ozone mixer with an ozone generator are successively installed on the secondary side of the elevated water tank, as close as possible to the starting end of the water supply pipe. They are connected to form a second cleaning system for cleaning the water supply pipe system, and an ultraviolet sterilizer having a bypass path and an on-off valve on the primary and secondary sides is connected to the ozone mixer of the second cleaning system.
A finishing cleaning system is formed by intervening and connecting to the next side, and high concentration ozone is injected into the flowing water in both the pumping pipe system and the water supply pipe system, and the slime in each pipe system is removed.
A water distribution system characterized by removing and draining rust and rust lumps into the drainage tank, taking them out from the drainage pipe system, and using an ultraviolet sterilizer to sterilize the running water in the water supply pipe system from the elevated water tank with ultraviolet rays for final cleaning. How to clean water pipes. (2) Water supply and distribution pipes of buildings to water tanks, pumps, pumping pipes,
The water supply pipe system is divided into a pumping pipe system leading to the elevated water tank, and a water supply pipe system running from the vicinity of the secondary side of the elevated water tank via the water supply pipe to the hydrant, and a drainage tank with a drain pipe is combined at the end of the above water supply pipe. A cleaning pump, a flow meter, and an ozone mixer equipped with an ozone generator are successively interposed and connected between the secondary side of the drainage tank and the secondary side of the lifting pump, as close to the beginning of the lifting pipe as possible. A cleaning pump, a flow meter, and an ozone mixer with an ozone generator are successively installed on the secondary side of the elevated water tank, as close as possible to the starting end of the water supply pipe. They are connected to form a second cleaning system for cleaning the water supply pipe system, and an ultraviolet sterilizer having a bypass path and an on-off valve on the primary and secondary sides is connected to the ozone mixer of the second cleaning system.
A finishing cleaning system is formed by intervening and connecting to the next side, and high concentration ozone is injected into the flowing water in both the pumping pipe system and the water supply pipe system, and the slime in each pipe system is removed.
Rust and rust lumps are removed and drained into the drainage tank and taken out from the drainage pipe system, and the water from the elevated water tank is sterilized with ultraviolet rays using an ultraviolet sterilizer, and the water supply pipe system is finished cleaned. and water supply pipe cleaning characterized in that the first and second cleaning systems are removed from both the water supply pipe system, but the above-mentioned ultraviolet sterilizer is left unremoved so that water sterilized by ultraviolet rays can be continuously supplied after the fact. Method.