JPS6218315Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a cleaning device within a pipe.

For example, inside pipes such as steel pipes, scales generated during hot rolling and scales that peel off during cold forming are accumulated, and when cutting the pipe or chamfering the end surface of the pipe, To,
Cutting powder, cutting waste, and in the case of electric resistance welded steel pipes, beet waste, etc. enter the pipe.

The above-mentioned contaminants in the pipe fall from the end of the pipe during transportation, and accumulate on the transportation equipment, causing equipment failure or significantly contaminating the working environment. In addition, it is necessary to remove foreign substances from the pipes, as products cannot be shipped if they remain in the pipes.

One of the conventional means for removing foreign matter inside a pipe is, for example, as shown in FIG.
An air injection nozzle 4 connected to the compressed air supply pipe 2 via a valve 3 is installed at a position facing one end of the pipe P on one side, and at a position facing the other end of the pipe P on the other side of the skid 1. , a dust collection hood 6 connected to the dust collector piping 5 is installed, and when the pipe P whose inside is to be cleaned is stopped on the skid 1 between the air injection nozzle 4 and the dust collection hood 6, the air injection nozzle 4 blow air at the required pressure into the pipe P for the required time, thereby
There is one in which the foreign matter inside is discharged from the other end of the pipe P and is collected in a dust collecting hood 6.

In addition, among the foreign substances, relatively light ones such as dust are
The dust passes through the dust collection hood 6 and the piping 5, and is separated and collected in the dust collector. Relatively large and heavy objects such as cutting chips accumulate in the dust collection hood 6, and when it is full, are discharged from the exhaust port of the dust collection hood 6. Take it out.

By the way, the distance between the air injection nozzle 4 and the dust collection hood 6 is set based on the maximum length of the pipe P whose inside is to be cleaned, and the distance between the air injection nozzle 4 and the dust collection hood 6 is set based on the length of the pipe P whose inside is to be cleaned. Since there are various sizes of clay, for example, as shown in Figure 2,
In the case of a short pipe P, there is a large distance between the other end of the pipe P and the dust collection hood 6.
Therefore, even if air at the required pressure is blown into the interior from one end of the pipe P, the foreign matter discharged from the other end of the pipe P will not reach the dust collection hood 6, and relatively light materials such as dust will be scattered into the atmosphere. However, problems arise in that the air is polluted over a wide area within the factory, and relatively large and heavy items such as cutting debris accumulate on the floor of the skid 1.

In order to deal with this, there is a means to move and adjust the position of the dust collecting hood 6 according to the length of the pipe P, for example. A device for evacuating the dust hood 6 so as not to interfere with the dust hood 6 is required, which causes the problem of complicating the equipment.

Furthermore, there was a problem in that a large amount of noise was generated when air at a required pressure was sent from the air injection nozzle.

This invention can be used reliably by relatively simple means, even when pipes have different lengths, without having to move any dust collection hoods, etc., and without polluting the environment or generating noise. An embodiment of the present invention will be described below with reference to FIGS. 3 and 4.

In FIGS. 3 and 4, reference numeral 11 denotes a rotating drum, and pipe storage pockets 11a are formed at equiangular positions of, for example, 90 degrees on the outer circumference of the rotating drum 11, extending over the entire length in the axial direction. , and this rotating drum 11 has an entry side skid 12 for charging the pipe P to be cleaned into the pipe storage pocket 11a on one side, and an outlet for receiving the cleaned pipe P rolling out from the pipe storage pocket 11a on the other side. The rotation is controlled intermittently every 1/4 rotation by a series of rotational drive control devices (not shown), such as a rotational angle detector, a rotational drive controller, and an electric motor with a brake, which are orthogonal to the side skid 13. It is supported like this.

The pipe P on the inlet skid 12 is inserted into the pipe storage pocket 11a located on the inlet skid 12 side via the one-piece feeder 14.

Above the rotating drum 11, there is a rotating drum 1
A holding member 15a supported by an arbitrary support means over the entire axial length of the holding member 1;
5a, and a pipe storage pocket 11 located at the top.
A closing means 15 is provided for closing the outer circumferential opening of a.

At the opposite positions of the openings on both end faces of the pipe storage pocket 11a in the region of the closing means 15,
An air injection nozzle 16 and a dust collection hood 17 are installed respectively.

Note that the length of the rotating drum 11 in the axial direction is
It is better to make it slightly longer than the maximum length of the pipe P to be cleaned.

Further, in order to allow the rotating drum 11 to rotate smoothly, the lower outer peripheral surface of the rotating drum 11 is preferably supported by an arbitrary number of idle rollers 18.

When the pipe P to be cleaned is sent from the previous process through the entrance skid 12, the single-line feeder 14 moves it into the pipe storage pocket 11a of the rotating drum 11 located on the entrance skid 12 side. , the pipe P to be cleaned is connected to the rotating drum 11.
One piece is inserted every 1/4 rotation of the.

When the pipe storage pocket 11a in which the pipe P to be cleaned is stored reaches the upper part, the rotating drum 11 stops, and the air injection nozzle is inserted from one end of the pipe P to be cleaned inside the pipe storage pocket 11a at the upper position. Air at the required pressure from 16 is blown for a required period of time, and the foreign matter in the pipe P is discharged from the other end of the pipe P, and the dust collection hood 17
Collected at.

In this case, even if the length of the pipe P to be cleaned in the upper pipe storage pocket 11a is short,
Since the outer peripheral opening of the pipe storage pocket 11a located at the upper position is closed by the closing means 15, the pipe storage pocket 11 located at the upper position is closed.
a is in the shape of a tunnel, so that the foreign substances discharged from the other end of the short pipe P do not leak to the outside and are directed to the opening on the other end surface of the pipe storage pocket 11a located at the upper position. The dust is collected by the dust collection hood 17.

And a pipe storage pocket 11 located at the top
When the cleaning of the pipe P in a is completed, the rotating drum 11 is rotated 1/4 turn, and when the pipe storage pocket 11a in which the cleaned pipe P is stored is located on the outlet skid 13 side, the cleaned pipe is removed. P
The material rolls out onto the exit side skid 13 and is sent to the next process.

In this way, when the pipe storage pocket 11a of the rotating drum 11 is located on the entrance skid 12 side, the pipe P to be cleaned is stored in the pipe storage pocket 11a, and the pipe storage pocket 11a is located at the upper part. When the pipe P in the pipe storage pocket 11a is cleaned and the pipe storage pocket 11a is located on the outlet side skid 13 side, the cleaned pipe P in the pipe storage pocket 11a is moved to the outlet side skid 13. 1
3. By repeating the series of operations of rolling upward, the pipe P to be cleaned can be continuously cleaned.

As described above, the present invention includes a rotary drum having a plurality of pipe storage pockets on its outer periphery at equal angular intervals over its entire axial length, and arranged perpendicularly between an inlet skid for carrying in pipes and an outlet skid for carrying out pipes. Installed to enable intermittent rotation control with the required rotation angle,
and providing a closing means for closing the outer peripheral opening of the pipe storage pocket over the entire length in the axial direction, at a position other than the position corresponding to the inlet side skid and the outlet side skid of the pipe storage pocket and at a corresponding position at the top, Since an air injection nozzle and a dust collection hood are installed at opposite positions of each end face opening of the pipe storage pocket in this closing means portion, the pipe storage pocket in the rotating drum that rotates intermittently at the required rotation angle is When the pipe is located on the inlet skid side, the pipe to be internally cleaned can be stored in the pipe storage pocket. At the intermediate position, the outer circumferential opening of the pipe storage pocket can be closed by the closing means, and the air at the opposite position of the opening on one end surface of the pipe storage pocket, which is shaped like a tunnel, can be closed by the closing means. Air at a required pressure can be blown from the injection nozzle into the interior from one end of the housed pipe, so that the foreign matter discharged from the other end of the pipe does not leak to the outside and forms the tunnel shape. The dust can be completely collected by the dust collection hood located opposite the opening at the other end of the pipe storage pocket. It is possible to efficiently clean the inside of pipes of different lengths without having to move the pipes.

Moreover, the noise generated when air is blown can be reduced by the tunnel formed by the pipe storage pocket and the means for closing the outer peripheral opening.

[Brief explanation of the drawing]

Figures 1 and 2 are explanatory diagrams showing a conventional example of cleaning the inside of a pipe, Figure 3 is a cross-sectional front view showing an embodiment of the device of the present invention for cleaning the inside of a pipe, and Figure 4 is a longitudinal side view of the same. It is a diagram. 11...Rotating drum, 11a...Pipe storage pocket, 12...Inlet skid, 13...Outlet skid, 14...Single feed kicker, 15...
Closing means, 15a... Holding member, 15b... Seal member, 16... Air injection nozzle, 17... Dust collection hood, 18... Idle roller, P... Pipe.

Claims (1)

[Scope of utility model registration request] A rotating drum having a plurality of pipe storage pockets at equal angular intervals over its entire axial length on its outer periphery is placed orthogonally between an inlet skid for carrying in pipes and an outlet skid for carrying out pipes, and is rotated at a required angle of rotation. The pipe storage pocket is installed so that it can be rotated intermittently, and the outer circumferential opening of the pipe storage pocket extends over the entire length in the axial direction at a position other than the position corresponding to the entry side skid and the exit side skid of the pipe storage pocket and at a corresponding position at the top. A cleaning device for an inside of a pipe, which is provided with a closing means for closing the pipe, and an air injection nozzle and a dust collection hood are installed at opposite positions of each end face opening of a pipe storage pocket in the portion of the closing means.