JPS63119892A - Washer for inside of feed water pipe - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

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 installed in a building.

[Conventional technology]

Conventionally, as a cleaning device for cleaning the inside of water supply pipes installed in buildings, as shown in Japanese Patent Laid-Open No. 58-156386, compressed air is pumped into water supply pipes through a solenoid valve that is periodically opened and closed by a timer. There are suggestions for what to send. Soft red rust that causes red water often adheres to the inside of these water supply pipes, and by intermittently applying compressed air to the adhered red rust, that is, alternately applying compressed air and water, the red rust is washed away. It is designed to be dropped and flow out of the water supply pipe along with water and compressed air.

[Problem that the invention seeks to solve]

By the way, in conventional cleaning equipment that operates in this way, while the work continues to feed compressed air into the water supply pipe,
As the amount of air in the water supply pipes gradually increases and the amount of water decreases, the cleaning effect of alternately applying compressed air and water decreases, causing red rust that causes red water in the water supply pipes. There is a problem of remaining.

The object of the present invention has been made in view of the actual situation in the prior art described above, and is to control the amount of air in the water supply pipe and secure the amount of water necessary for cleaning in the water supply pipe, thereby ensuring proper cleaning. To provide a water supply pipe internal cleaning device capable of uniformly and reliably cleaning the interior of the water supply pipe while maintaining its effectiveness.

[Means for solving problems]

In order to achieve this invention, the present invention provides a compressor that supplies compressed air, a tank that stores the compressed air supplied from this compressor, a solenoid valve that controls the flow of the compressed air stored in this tank, and a cycle of this solenoid valve. In a cleaning device that cleans the inside of a water supply pipe installed in a building by sending intermittent compressed air passing through the electromagnetic valve into the water supply pipe, the cleaning device is equipped with a control timer that opens and closes periodically. The solenoid valve is configured to include a control counter that closes the solenoid valve when the solenoid valve has been operated a predetermined number of times, and a stop timer that restarts the solenoid valve a predetermined time after the solenoid valve is closed by the control counter.

[Effect]

Since the present invention is configured as described above, when the periodic operation of the control timer reaches a predetermined number of times, that is, when the compressed air sent into the water supply pipe via the solenoid valve reaches a predetermined amount, the control counter activates the solenoid valve. It closes and the work of sending compressed air temporarily stops.

Since water always flows into the water supply pipe even during this stoppage, excess air in the water supply pipe flows out and the amount of water necessary for cleaning is restored. Then, after the time set to ensure the proper ratio of water and air has elapsed, a stop timer restarts the process of supplying compressed air. In this way, the amount of water necessary for cleaning can be secured without excess air inside the water supply pipe, and therefore compressed air and water can be alternately applied to the red rust that has adhered to the inside of the water supply pipe. The inside of the water supply pipe can be reliably cleaned.

〔Example〕

An embodiment of the present invention will be described below with reference to FIG. 1st
The figure is an explanatory diagram showing an embodiment of the water supply pipe internal cleaning device of the present invention.

In this Figure 1, a building with one floor and two floors has a main water supply pipe 3, a branch pipe 4.5 connected to this main pipe 3, and a branch pipe 4.5 connected to each of these branch pipes 4.5. A faucet 6.7 to be attached is installed.

10 is a compressor that supplies compressed air; 11 is a tank that stores the compressed air supplied from the compressor 10; 1;
2 is a solenoid valve that controls the flow of compressed air stored in the tank 11; 13 is an adapter that connects to the faucet 6; these compressor 10, tank 11, solenoid valve 12, and adapter 13;
are sequentially connected by piping as shown in FIG. 14 is a controller section that sends a series of opening/closing commands to the solenoid valve 13; this controller section 14 operates alternately with a valve open control timer 15 that controls the opening time of the solenoid valve 13; A valve close control timer 16 that controls the closing time of the solenoid valve 13, and control that closes the solenoid valve 13 when the periodic operation of the valve open control timer 15 and the valve close control timer 16 reaches a predetermined number of times. A counter 17 and a stop timer 1 that restarts the operation of the solenoid valve 13 after a predetermined time has elapsed since the control counter 17 stopped it.
It consists of 8.

In such a configuration, in order to clean the branch pipe 5 on the second floor 2, connect the adapter 13 to the faucet 6 on the first floor 1 as described above.
At the same time, the lower snake of the branch pipe 5 is left open. The compressed air supplied from the compressor 10 passes through the tank 11 and the solenoid valve 12, enters the branch pipe 4 through the adapter 13 and the faucet 6, ascends the main pipe 3, and partially flows into the branch pipe 5. After cleaning the inside of the lever branch pipe 5, it flows out from the snake lower. At that time, as the solenoid valve 12 is periodically opened and closed by the valve open control timer 15 and the valve close control timer 16, compressed air is intermittently sent into the water supply pipe, and as a result, water from the main pipe 3 flows into the branch pipe 5. A mixed fluid of compressed air flows in and acts on the inside of the branch pipe 5. When the compressed air is periodically fed a predetermined number of times, that is, a predetermined amount of compressed air is fed, the solenoid valve 13 is brought into a closed state by the control counter 17, and the feeding of compressed air is temporarily stopped. During this stop, excess air in the water supply pipes flows out, while water necessary for cleaning flows in. After stopping for a predetermined time, the stop timer 18 restarts the periodic opening and closing of the solenoid valve 12, and compressed air is sent into the water supply pipe again. Therefore, a series of operations of the electromagnetic valve 12, that is, periodic opening/closing, stopping, and restarting, are made into one step by the controller section 14, and the inside of the branch pipe 5 is cleaned by repeating this step.

In the embodiment configured in this way, compressed air is intermittently sent into the water supply pipe to clean the inside of the branch pipe 5 for a predetermined period of time, and then the supply of compressed air is temporarily stopped to supply water necessary for cleaning. The red rust attached to the inside of the branch pipe 5 can be reliably cleaned by the alternating action of compressed air and water. Further, these operations are controlled by the controller section 14 via the solenoid valve 12, and each cycle is controlled by the valve open control timer 15, valve close control timer 16, control counter 17, and stop timer 18 that constitute the controller section 14. You can adjust the amount of compressed air sent per cycle, the interval of one cycle, the total amount of compressed air sent, and the amount of water and air in the water supply pipe after stopping. Just set the optimal one and it will always work. A good cleaning effect inside the branch pipe 5 can be maintained.

〔Effect of the invention〕

According to the present invention, not only the inside of the water supply pipe is cleaned by sending compressed air intermittently, but also the problem of excess air and water shortage in the water supply pipe that occurs during this process can be solved by temporarily stopping the supply of compressed air to supply water. The amount of air and water inside the pipe can be adjusted, thus maintaining the appropriate cleaning effect obtained by alternately applying compressed air and water to the inside of the water supply pipe, ensuring that the inside of the water supply pipe is cleaned evenly. The effect is that it can be done.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing an embodiment of the water supply pipe internal cleaning device of the present invention. 3.-- Vertical main pipe, 4.5-- Branch pipe, 10
～---1--Compressor, 11--Tank, 1
2--Solenoid valve, 15--9 valve opening control timer,
16--Valve closing control timer, 17--Control counter, 18--Integrated timer.

Claims (1)

[Claims] (1) Equipped with a compressor that supplies compressed air, a tank that stores the compressed air supplied from this compressor, a solenoid valve that controls the flow of the compressed air stored in this tank, and a control timer that periodically opens and closes this solenoid valve. , in a cleaning device that cleans the inside of a water supply pipe installed in a building by sending intermittent compressed air passing through the solenoid valve into the water supply pipe, when the periodic operation of the control timer reaches a predetermined number of times; A water supply pipe internal cleaning device comprising: a control counter for closing a solenoid valve; and a stop timer for restarting the solenoid valve after a predetermined period of time after the solenoid valve is closed by the control counter.