JP2583266Y2 - Apparatus for removing extraneous matter on the inner surface of pipe - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for removing water, cutting chips and the like adhering to the inner surface of a pipe such as a steel pipe.

[0002]

2. Description of the Related Art When manufacturing a tube, roll cooling water for cooling a roll for rolling the tube and cutting chips generated when machining the end of the tube adhere to the tube. Of these, most of those that adhere to the outer surface of the tube fall naturally, and those that do not fall do not require a large-scale device,
Although it can be easily removed by compressed air or the like, anything attached to the inner surface of the tube cannot be easily removed.

An apparatus for removing the deposits attached to the inner surface of the tube as described above is disclosed in Japanese Utility Model Application Laid-Open No. 56-133379. This device is a device for supplying compressed air or the like to the inside of a pipe to remove cutting chips and the like existing inside the pipe.

[0004]

However, in the case of using the apparatus for removing cutting chips and the like inside a pipe disclosed in Japanese Utility Model Application Laid-Open No. 56-133379, it is necessary to remove the cutting chips and the like. Has been radiated into the atmosphere, thus polluting the atmosphere.

The present invention has been made to solve the above-mentioned problems of the prior art, and is an apparatus capable of removing cutting chips and the like adhering to the inner surface of a pipe without causing air pollution. It is intended to provide.

[0006]

The apparatus for removing deposits on the inner surface of a pipe according to the present invention is used to remove the deposits on the inner surface of the pipe by blowing compressed air into the inside from one end of the pipe. A lower hood that covers the other end of the lower hood from below, and an upper hood that is provided opposite to the lower hood and that can be raised and lowered in an up-down direction, and guides gas in the space shut-off device to an external device. An exhaust duct is provided.

[0007]

In order to remove the cuttings and the like adhering to the inner surface of the pipe using the device for removing adhering substances or the like from the inner surface of the pipe according to the present invention, the compressed air blown from one end of the pipe is used to remove the inner surface of the pipe. The lower hood that covers the other end of the tube from below is discharged from the other end of the tube together with the cutting chips attached to the lower hood, and is provided opposite to the lower hood, and is vertically movable. This is prevented by forming an airtight space with a space blocking device such as an upper hood. The space shut-off device is provided with an exhaust duct for leading the internal gas to an external device, and relatively light cutting chips and other contaminants remaining in the space are led to an external device such as a dust collector. In addition, since the upper hood can be moved up and down in the vertical direction, when the moving tube, the moving means such as the walking beam, and other devices move, they are retracted to prevent interference with them. Can be prevented.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The apparatus for removing deposits and the like on the inner surface of a pipe according to the present invention is used for cutting, chamfering, threading, or other machining of a pipe such as a steel pipe. Is removed from the other end by compressed air blown from one end of the pipe body, and is an effective device for preventing cutting chips and other contaminants discharged together with the air from diffusing.

FIG. 1 shows an apparatus for removing deposits on the inner surface of a tube according to an embodiment of the present invention. FIG. 1A is a front view of this embodiment, and FIG. 1B is a view taken in the direction of arrows AA in FIG. 1A. The space shielding device including the lower hood 1 that covers the other end 23a side of the tube body 23 from below and the upper hood 2 that is provided to face the lower hood and that can be raised and lowered in the up-down direction includes a walking beam 21 and a fixed beam 22. The pipe 23 is provided in the horizontal feed line. The lower hood 1 and the upper hood 2 can cover a fixed length portion in a range extending from the shortest position to the longest position of the pipe 23 to be fed laterally.

The upper hood 2 further includes an exhaust duct 5 for guiding relatively light cutting chips and other contaminants remaining in a space covered by the upper hood 2 and the lower hood 1 to an external device such as a dust collector. It is composed of The lifting device for the upper hood 2 includes a hydraulic cylinder 7 installed on a gate-shaped support base 6, an operation bar 9 having one end connected to the piston rod 8 of the hydraulic cylinder 7 and moving in a transverse direction,
One end is pivotally supported by the operating bar 9 with a pin 10, and the other end is pivotally supported by three supporting members 14 fixed to the upper part of the upper hood 2 with a pin 15 to connect the operating bar 9 to the upper hood 2. One end of each of the connecting bar 16 and the three support members 11 fixed on the
2 and the other end is connected to the connecting bar 16 and the operating bar 9 in one place.
A rotating arm 13 pivotally supported by a hepin 10.

The belt conveyor 3 is provided below the horizontal feed line of the tube 23 along the longitudinal direction of the tube 23. Further, on one end 23b side of the tube 23, a compressed air blowing nozzle 4 for feeding compressed air into the tube 23 is provided.

When removing the extraneous matter in the tubular body 23 by the above-described extraneous matter removing apparatus on the inner surface of the tubular body, the upper hood 2 is raised to a desired position by the rotation of the rotating arm 13 when the tubular body 23 is fed laterally. Then, the operation is performed in a state where the operation of the hydraulic cylinder 7 is stopped. When the one end 23b side of the tube body 23 is stopped in a state of facing the blowing device 4 for feeding compressed air, the hydraulic cylinder 7 is operated to lower the upper hood 2,
With the upper hood 2 and the lower hood 1 surrounding an intermediate portion of the tube 23, an airtight space is formed on the other end 23a side of the tube 23. After such a state, the compressed air is blown into the pipe 23 by the compressed air blowing nozzle 4 from the pipe end 23b exposed outside the upper hood 1 and the lower hood 2.

As a result, extraneous matter such as cutting chips adhering to the inner surface of the tube 23 is blown off, and is discharged together with the compressed air from the tube end 23a into a secret space covered by the upper hood 2 and the lower hood 1. Deposits such as relatively heavy cuttings fall onto the belt conveyor 3 and are collected by the belt conveyor 3 into a collection box 25 disposed in a pit 24 provided underground. On the other hand, relatively light cutting chips and other contaminants which are discharged together with the compressed air and stay in the space are guided to an external device such as a dust collector through the exhaust duct 5 and collect dust.

The tube body 23 after the operation of removing the deposits is completed.
The upper hood 2 is raised to a desired position by the rotation of the rotating arm 13, and is laterally moved to the next processing step with the operation of the hydraulic cylinder 7 stopped.

As shown in FIG. 1 (b), the number of tubes 23 for removing the adhering matter is not limited to one, and a plurality of tubes 23 can be collectively used. In addition, a chute 17 is provided in the lower hood 1 in order to efficiently collect the falling deposits. Although the exhaust duct 5 is provided only in the upper hood 2 in FIG. 1A, it may be provided in the lower hood 1 or both. Furthermore, since the upper hood 2 is configured to be able to move up and down, if it is raised after use, it will not hinder the transport of the tube.

[0016]

As described above, in the apparatus for removing deposits on the inner surface of the pipe according to the present invention, the deposits, cutting chips, etc., on the inner surface of the pipe discharged from the inside of the pipe diffuse and cause air pollution. Can be reliably prevented.

[Brief description of the drawings]

FIG. 1 (a) is a front view of a device for removing extraneous matter on the inner surface of a tube, and FIG. 1 (b) is a view taken along the line AA in FIG. 1 (a).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lower hood 2 Upper hood 3 Belt conveyor 4 Compressed air blowing nozzle 5 Exhaust duct 6 Double support frame 7 Hydraulic cylinder 8 Piston rod 9 Operating bar 10 Pin 11 Support member 12 Pin 13 Rotating arm 14 Support member 15 Pin 16 Connection Bar 17 Shoot

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Sho 56-13397 (JP, U) Japanese Utility Model Sho 59-106615 (JP, U) Japanese Utility Model Sho 51-115756 (JP, U) Japanese Utility Model Sho 58- 110351 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) B08B 1/00-11/04

Claims (1)

(57) [Scope of request for utility model registration] 1. A lower hood that covers the other end of the tube from below when compressed air is blown into the inside of the tube from one end to remove deposits on the inner surface of the tube, and a lower hood facing the lower hood. A space blocking device provided as an upper hood that is provided and capable of moving up and down in the vertical direction, and an exhaust duct that guides gas in the space blocking device to an external device is provided; Removal device.