JPH04118084A - Method for cleaning inside of pipe - Google Patents

Abstract

PURPOSE:To surely clean off the dust, etc., in a long-sized or partly bent pipe by inserting a hose provided with a discharge port opened at a desired angle to the rear at its tip into the pipe and sending compressed air into the hose. CONSTITUTION:A nozzle 11 is inserted into one opening 20 of a pipe 2 to be cleaned, and compressed air 17 is supplied through a hose 19. Since the discharge port 18 is inclined at an angle of about 45 deg. to the axis of the pipe in this example, compressed air is discharged toward the rear end at the angle. The nozzle 11 is advanced toward the other end of the pipe 2 by the driving force of the compressed air 17 discharged from the discharge port 18. The nozzle 11 is stopped at a desired position in the pipe 2, then the hose 19 is slowly drawn out in direction of the arrow B, hence the dust, etc., in the pipe 2 are blown toward the rear of the nozzle 11 by the compressed air and discharged from the opening 20.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to cleaning the inside of various pipes, such as water and sewerage pipes, ventilation pipes, and pipes for circulating various liquids and gases. This relates to cleaning methods.

[Prior Art] In plant equipment, etc., it is necessary to clean dust etc. that has adhered to the inside of the pipes when completing piping work for circulating various liquids and gases, or during periodic maintenance inspections. .

Conventionally, in such cleaning work, as shown in Figure 4,
After inserting the nozzle 1 with a tapered tip into the opening at one end of the pipe body 2 to be cleaned, open the valve 3 and supply compressed air 4 to the rear end of the nozzle 1 through the hose 5. By pushing the hose 5 in the depth direction of the tube body 2 while blowing from the tip of the nozzle 1, the nozzle 1 is moved toward the other end opening or the inner part within the tube body 2. A commonly used method is to remove attached dust and the like.

[Problems to be Solved by the Invention] However, in the above cleaning method, for long pipes with a length of more than 10 meters, it is difficult to reach the nozzle 1 to the other end because the hose 5 meanders. , the inside of the pipe must be cleaned by inserting the nozzles 1 alternately from both ends. In this case, it is fine when the nozzle 1 reaches the center of the tube, but when it does not reach the center, dust remains near the center of the tube, making it impossible to reliably remove the dust inside the tube.

Furthermore, in the case of a tubular body that has a curved portion in part, even if the hose 5 is pushed, the hose 5 itself will be bent, making it impossible to advance the nozzle 1 beyond the curved portion.

Therefore, in this case as well, there was a problem that the dust inside the tube could not be reliably removed, as in the case described above.

The present invention was made in view of the above circumstances, and the technical problem is to create a pipe that can reliably clean the entire interior of the pipe, even if it is a long pipe or a partially curved pipe. The purpose of the present invention is to provide a cleaning method for cleaning.

[Means for Solving the Problems] In order to achieve the above object, the method for cleaning the inside of a tube according to the present invention uses a hose provided with a nozzle at the tip thereof having a discharge port that opens at a desired angle toward the rear. The nozzle is inserted into the tubular body, compressed air is sent to the hose, and the compressed air is discharged from the discharge port while the nozzle is moved to a desired position in the tubular body. After that, the hose is The inside of the pipe was cleaned while pulling it out.

[Operation] In the above purification method, a nozzle provided at the tip of the hose is inserted into an opening at one end of the tubular body, and compressed air is supplied to this nozzle through the hose. Then, compressed air is discharged from the discharge port of the nozzle toward the rear thereof, and this compressed air acts on the nozzle with a propulsive force in the forward direction. This helps the nozzle move forward, and the nozzle can easily move toward the other end of the tube. Therefore, once the nozzle has moved to a desired position within the tube, the hose is pulled out at a predetermined speed. Then, during this process, dust and the like inside the tube are removed by the compressed air discharged from the discharge port of the nozzle and discharged from the nozzle inlet of the tube.

Embodiments] Hereinafter, a method for cleaning the inside of a tube according to the present invention will be described based on illustrated embodiments.

FIG. 1 is a cross-sectional view and a front view showing one embodiment of the internal tube extinguisher used in the present invention.

In the figure, 11 is a nozzle, and the tip part 12 is semispherical, and a gas chamber 13 is formed inside the nozzle. This gas chamber 13 communicates with a gas passage 15 of a cylindrical joint portion 14 integrally formed with the tip portion 12 . Compressed air 17 at a predetermined pressure is supplied to a gas inlet 16 at the open end of the gas passage 15. Also, the destination IN
The portion 12 is provided with a discharge port 18 for discharging the compressed air 17 supplied from the gas population 16 to the gas chamber 13 through the hose 19 in a direction substantially opposite to the supply direction, that is, toward the rear of the nozzle 11. . This discharge port 18 is the first
As shown in Figure (b), a plurality of them are provided at equal angular intervals in the circumferential direction of the outer periphery of the tip portion 12.

When cleaning the inside of a tube using such an additional nozzle 11, as shown in FIG. After connecting, connect the nozzle 11 to the pipe body 2 to be cleaned.
Insert it into the opening 2o at one end. In this state, hose 19
supply of compressed air 17 is started.

Then, the compressed air 17 is discharged from the discharge port 18 of the nozzle 11 toward the rear of the nozzle 11 . In this example,
Since the discharge port 18 is inclined at approximately 45 degrees with respect to the tube axis,
It is discharged toward the rear end at an angle of about 45 degrees. Then,
The compressed air 17 discharged from the discharge port 18 exerts a driving force on the nozzle 11 to move the nozzle 11 forward toward the other end of the tube body 2 . As a result, the nozzle 11
becomes easier to move toward the other end of the tube body 2, so when a force is applied to the hose 5 to push it toward the other end of the tube body 2, the nozzle 11
moves toward the other end of the tube body 2 together with one hose.

Therefore, once the nozzle 11 has moved to the desired position,
The operator holds the hose 19 with his/her hand to stop the movement of the nozzle 11. Thereby, the nozzle 11 stops at a desired position inside the tube body 2.

Then, when the hose 19 is slowly pulled out in the forward direction B, the compressed air 17 discharged from the discharge port 18 of the nozzle 11 blows away dust, etc. inside the tube body 2 to the rear of the nozzle 11. It is removed as it is blown towards the direction, and is discharged from the opening 20 at one end.

Therefore, according to this cleaning method, when the nozzle 11 is moved to the desired position, the dust inside the tube body 2 is blown away, and when the nozzle 11 is returned to the opening 20 at one end of the tube body 2, the dust and the like are blown away. One end opening 20 while being blown away again
Since the dust is discharged from the inside, firmly attached dust is also reliably removed.

Furthermore, since the nozzle 11 is moved with the help of the propulsive force generated by the compressed air 17 discharged from the discharge port 18, even if the tube is long or has a partially curved body, the nozzle 11 provided at the end of the hose can be moved easily. can be easily moved to a desired position within the tube and its interior can be reliably cleaned.

Furthermore, since the propulsive force generated by the compressed air discharged from the gas discharge port 18 assists the forward movement of the nozzle 11,
The pressure of compressed air 17 may be small. However, there is an advantage in that cleaning work can be carried out without using a special high-pressure compressor.

Moreover, since the tip of the nozzle 11 is semispherical, movement inside the tube body 2 is also performed smoothly.

In particular, since no liquid such as water is used, it is suitable for cleaning work in conditions or environments where moisture is averse, and since drying is not required, the work can be completed in a short time.

FIG. 3 is a sectional view and a front view showing another embodiment of the nozzle 11, which differs from the embodiment shown in FIG. 1 in that the tip 12 of the nozzle 11 is cylindrical.

Even when the nozzle 11 having this structure is used, the same effects as in the above embodiment can be obtained.

[Effects of the Invention] As described above, according to the in-tube extinguishing method of the present invention, a hose having a nozzle at its tip with a discharge port that opens at a desired angle toward the rear is inserted into a tube. , sending compressed air to the hose and moving the nozzle to a desired position on the tube body while discharging the compressed air from the discharge port;
After this, the inside of the tube was cleaned while pulling out the hose while the compressed air was being discharged, so the nozzle was inserted into the opening at one end of the tube, compressed air was supplied, and the nozzle was moved to the desired position on the tube. With the extremely simple operation of moving the tube up to a point and then pulling it out to the opening at one end, it is possible to reliably clean dust and the like inside the long tube and the partially curved tube body.

In particular, since the forward motion of the nozzle is assisted by the driving force of compressed air, cleaning work can be carried out without using a special high-pressure compressor.

Furthermore, since no liquid such as water is used, it is suitable for cleaning work in conditions or environments where moisture is averse, and since drying treatment is not required, the work can be completed in a short time.

[Brief explanation of the drawing]

FIG. 1 is a sectional view and front view showing one embodiment of the tubular cleaning tool used in the present invention, FIG. 2 is a perspective view for explaining the cleaning method, and FIG. FIG. 4 is a sectional view and a front view showing an embodiment of the present invention, and FIG. 4 is a perspective view for explaining a conventional cleaning method. 2... Pipe body 12... Tip portion 14... Cylindrical joint 16... Gas inlet 18... Discharge port 20... One end opening Patent applicant

Claims (1)

[Claims] A hose with a nozzle at its tip that has a discharge port that opens at a desired angle toward the rear is inserted into the tubular body.
Compressed air is sent to the hose, the nozzle is moved to a desired position in the tube body while the compressed air is discharged from the discharge port, and the inside of the tube is cleaned while the hose is pulled out while the compressed air is being discharged. A method for cleaning the inside of a pipe.