JPH0583316B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cleaning device for cleaning the inside of a water supply pipe provided in a building.

[Conventional technology]

Soft floating rust that causes red water often adheres to the inside of water supply pipes installed in buildings, so in order to maintain good water quality, the inside of the water supply pipes is cleaned to remove the attached floating rust. There is a need to. Conventionally, as a method for cleaning the inside of this water supply pipe, for example, a method shown in Japanese Utility Model Application Laid-Open No. 60-49983 has been proposed.

FIG. 4 is an explanatory diagram schematically showing this prior art. In FIG. 4, water stored in a water tank 31 is sent to a connecting pipe 39 via a check valve 35 by a water pump 32. On the other hand, compressed air compressed by the compression pump 34 and stored in the air tank 33 is sent to the connecting pipe 39 via the electromagnetic valve 38 and the check valve 36. This solenoid valve 38 is opened and closed periodically by a timer 37.
When compressed air is sent into the connecting pipe 39, the check valve 35 closes and the water supply from the water pump 32 is stopped.On the other hand, when compressed air is not sent into the connecting pipe 39, the check valve 35 closes. The water supply pump 32 is opened and water is supplied from the water supply pump 32. In this way, water and compressed air are alternately sent to the water supply pipe 40,
As water and compressed air alternately hit the floating rust attached to the inside of the water supply pipe 40, the floating rust is washed away, and the floating rust that is washed away with water and air from the open water supply faucet 41 is washed away. It's starting to leak out.

[Problem that the invention seeks to solve]

By the way, in the prior art described above, the check valve 35 of the water pump 32 and the check valve 36 of the compression pump 34
are connected to the same connecting pipe 39, and compressed air having compressibility is fed into this connecting pipe 39, so the opening and closing operations of these check valves 35 and 36 are slow, and the desired amount of water and compressed air is not mixed. The problem is that it is difficult to control to obtain alternating current. Furthermore, since the check valve 35 of the water pump 32 closes intermittently, it is impossible to constantly accelerate the water flowing down naturally, resulting in a problem that the cleaning effect is low.

The present invention has been made in view of the actual situation in the prior art, and its purpose is to provide a water supply pipe internal cleaning device that can obtain an alternating flow of water and compressed air without providing a check valve. There is a particular thing.

[Means for solving problems]

In order to achieve this object, the present invention provides a water supply pipe internal cleaning device that cleans the inside of the water supply pipe by sending compressed air into the flow of water in the water supply pipe provided in a building. A water supply section for supplying water for accelerating the flow of water is provided at an upstream position of the pipe, and a downstream position separated from the upstream position,
The structure includes a compressed air supply section that intermittently sends compressed air into the flow of water accelerated by the water supply section.

[Effect]

Since the present invention is configured as described above, when cleaning the inside of the water supply pipe, the water flowing through the water supply pipe is accelerated by the water supplied by the water supply unit at an upstream position of the water supply pipe, and this accelerated The water is intermittently pumped with compressed air at a location downstream of the water supply pipe. The alternating flows of water and compressed air thus formed are
By hitting the floating rust adhering to the inside of the water supply pipe, the floating rust is washed away and the inside of the water supply pipe is cleaned. Therefore, alternating flows of water and compressed air can be obtained without providing a check valve.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS The water supply pipe internal cleaning device of the present invention will be explained below based on the drawings. Figures 1 and 2 are explanatory diagrams showing one embodiment of the water supply pipe internal cleaning device of the present invention, with Figure 1 showing the overall configuration and Figure 2 showing the flow of water and compressed air inside the water supply pipe. FIG.

In FIG. 1, a vertical main pipe 2 is connected below an elevated water tank 1 provided at the top of a building, and to this vertical main pipe 2, a branch pipe 3, a horizontal main pipe 4 with a large diameter similar to the vertical main pipe 2, The complicated pipes 5, which have many cuts and are connected to pipes of different diameters, are connected to each other. and,
The branch pipe 3 is provided with water taps 9, 10, and 11; similarly, the horizontal main pipe 4 is provided with water taps 12, 13, and the complex pipe 5 is provided with water taps 14, 15, and 16, respectively.

Further, compressed air supplied from the compressor 21 is stored in a tank 22 and sent to the water taps 10, 13, 15, etc. via a solenoid valve 23 and a connecting pipe 25. This electromagnetic field 23 is periodically opened and closed in response to an output signal from a timer 24, and controls the flow of compressed air from the tank 22. On the other hand, the water stored in the water tank 26 is supplied to the water supply valve 9 via the flow control device 28 by the water supply pump 27, and the connecting pipe 29.
12, 14, etc. In addition, these faucets 9, 12, and 14 constitute a water supply section that supplies water that accelerates the flow of water naturally flowing down from the elevated water tank 1 at an upstream position. Reference numerals 10, 13, and 15 constitute a compressed air supply section that intermittently feeds compressed air into the flow of water accelerated in the water supply section at a downstream position.

In this embodiment, for example, in order to clean the inside of the branch pipe 3, the connecting pipe 29 is connected to the hydrant 9, the connecting pipe 25 is connected to the hydrant 10, and a hydrant located downstream of these is connected. Leave 11 open. At this time, water naturally flows down from the elevated water tank 1, passes through the vertical main pipe 2, branch pipe 3, and flows out from the water tap 11.
Therefore, the water supply pump 27 is started, the flow rate is controlled by the flow rate control device 28, and then water is supplied from the faucet 9 to the branch pipe 3, thereby accelerating the water flowing down naturally. Then, the compressor 21 is activated, and compressed air is intermittently sent from the water tap 10 to the accelerated flow of water inside the branch pipe 3 via the electromagnetic valve 23 that opens and closes periodically. As a result, as shown in FIG. 2, the accelerated water 30 and the air mass 31 formed in the accelerated water 30 alternately hit the floating rust that has adhered to it while flowing inside the branch pipe 3. This floating rust is washed off, and the floating rust flows out from the water tap 11 together with water and air.

Similarly, in the horizontal main pipe 4 and the complicated pipe 5, water is fed by the water pump 27 from the hydrant 12, 14 located at the upstream position to the flow of water naturally flowing down from the elevated water tank 1, and then, Compressed air from the tank 22 is intermittently fed into this accelerated flow of water from the water taps 13 and 15 on the downstream side to form an alternating flow of accelerated water and compressed air. and,
This accelerated alternating flow of water and compressed air washes away floating rust adhering to the interior of the horizontal main pipe 4 and the complicated pipe 5, and causes it to flow out from the water tap 16, etc. on the downstream side together with water and air.

According to the embodiment configured in this way, it is possible to constantly accelerate the flow of water that naturally flows down from the elevated aquarium, and moreover, it is possible to form a good alternating flow of the accelerated water and compressed air. Therefore, floating rust attached to the inside of the water supply pipe can be reliably removed and an excellent cleaning effect can be obtained.

FIG. 3 is an explanatory diagram showing another embodiment of the present invention. In this other embodiment, a branch pipe 8 is added to the city water pipe 6.
are connected via a stop valve 7. And branch pipe 8
are provided with water taps 17, 18, and 19.

In order to clean the branch pipe 8 directly connected to the city water pipe 6, the stop valve 7 is closed and the water supply pipe 19 is opened in order to eliminate the influence on the city water pipe 6 side.
Water may be fed from the water tap 17 by the water pump 27, and compressed air from the tank 22 may be fed intermittently from the water tap 18.

Even in this embodiment, a good alternating flow of accelerated water and compressed air can be formed, so
Reliably removes floating rust that adheres to the inside of water supply pipes.

In addition, in the above embodiment, the water supply faucets 9, 12, 14, and 17 are provided as the water supply section, and the water supply faucets 10, 13, 15, and 18 are provided as the compressed air supply section. The compressed air supply section is not limited to a tubular one, and may simply be provided with holes.

〔Effect of the invention〕

Since the water supply pipe internal cleaning device of the present invention is configured as described above, it is possible to obtain a good alternating flow of water and compressed air without providing a check valve, resulting in superior cleaning compared to the conventional one. Effects can be obtained.

[Brief explanation of the drawing]

Figures 1 and 2 are explanatory diagrams showing one embodiment of the water supply pipe internal cleaning device of the present invention, with Figure 1 showing the overall configuration and Figure 2 showing the flow of water and compressed air inside the water supply pipe. FIG. 3 is an explanatory diagram showing another embodiment of the present invention, and FIG. 4 is an explanatory diagram showing an example of a conventional water supply pipe internal cleaning device. 1...Elevated water tank, 2...Vertical main pipe, 3...Branch pipe,
4... Horizontal main pipe, 5... Complex pipe, 6... City water pipe, 7... Stop valve, 8... Branch pipe, 9-19... Water tap, 21... Compressor, 22... Tank, 2
3... Solenoid valve, 24... Timer, 25, 29...
Connecting pipe, 26...tank, 27...water pump,
28...Flow control device, 30...Water, 31...Air mass.

Claims (1)

[Claims] 1 In a water supply pipe internal cleaning device that cleans the inside of the water supply pipe by sending compressed air into the flow of water in the water supply pipe provided in a building, the flow of water is accelerated to an upstream position of the water supply pipe. A compressed air supply section is provided at a downstream position remote from the upstream position, and a compressed air supply section that intermittently sends compressed air into the flow of water accelerated by the water supply section. Water supply pipe internal cleaning equipment.