JPS6239035B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pipe cleaner for removing deposits on the inner surface of a pipe.

Conventionally, this type of pipe cleaner introduces pressure fluid through a hose to a conical head, and jets the pressure fluid onto the inner surface of the pipe from multiple holes provided in the conical surface of the head, pushing the fluid through the pipe. However, with this type, the inner surface adhesion is hard and the layer thickness is large because the fluid pressure of the jet-injected pressurized fluid hits the inner surface adhesion and removes it. In some cases, it is difficult to remove the pipe, and in the case of a coil-shaped pipe that is rotated and inserted into the pipe using power from a motor, it is difficult to rotate it at high speed for economic and other reasons. Therefore, a sufficient brushing effect cannot be obtained, and since fluid such as water is not used, the removed inner surface deposits accumulate in the pipe, reducing work efficiency. There was a problem that it was not suitable for long pipes because the material was pushed into the pipe manually.

The present invention has been made in view of the above-mentioned conventional problems, and includes a rotor that jets pressure fluid led through the rotor shaft obliquely backward.
By supporting a rotating brush or a vibrating brush on the rotor that can be brushed by sliding on the inner surface of the pipe, it is possible to efficiently and reliably remove any kind of material attached to the inner surface of the pipe than in the past. To provide a pipe cleaner which can be self-propelled, and can easily clean long pipes.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

In FIG. 1, a pipe cleaner is generally designated by the numeral 10. 20 is a rotor shaft,
It has a hole 21 that opens on one end surface, and a small-diameter side hole 22 that opens near the bottom of the hole 21, and a flange 24 that defines an insertion port 23 between the opening end and the opening end. is provided, and the other end surface (closed end surface)
A front guide member 30 is attached to the front guide member 30, and the insertion port 23 is inserted into a flexible hose 40 and fixedly connected to the hose 40 by means such as a hose band or adhesive. The front guide member 30 has a hemispherical guide surface 31 having a relatively larger diameter than the shaft diameter of the rotor shaft 20, and the end surface of the boss portion 32 formed at the center of the back surface is connected to the end surface of the rotor shaft 20. They are in contact with each other and are fixed to the rotor shaft 20 by adhesive or by connecting means such as bolts and screws (not shown).

50 is a hollow rotor, which is rotatable and substantially rotatable with one end facing the end surface of the boss portion 32 of the front guide member 30 and the other end facing the flange portion 24 of the rotor shaft 20, respectively. Rotor shaft 2 becomes unable to vibrate in the upper axial direction.
0 is externally fitted. This rotor 50 has a stepped shape having a small-diameter bearing part 51, a medium-diameter support part 52, a large-diameter nozzle part 53, and a medium-diameter spacer part 54 each having a predetermined width in order from the other end side, The bearing surface 51a of the bearing portion 51 is a cylindrical surface eccentric to the axis of the rotor shaft 20, as shown in FIG. The nozzle portion 53 of the rotor 50 includes a circumferential groove 55 that communicates with the side hole 22 of the rotor shaft 20, and one or more jet nozzles that extend radially from the circumferential groove 55 with respect to the axis of the rotor 50 and open on the side end surface of the support portion 52. It has a guide hole 56 with a tip 56a,
As shown in FIG. 2, this jet nozzle 56a is provided at an angle α (0<α<90°) from the tangential direction Y of the rotor 50 to the axial direction X, and is oriented at a vertical angle of 0 degrees in the figure. ing. Note that the front portion of the rotor 50 is supported by a front guide member 30.

Reference numeral 60 denotes an annular rotating brush, which has an outer diameter slightly smaller than the inner diameter of the water supply and wastewater pipe A, and is fitted and fixed to the support portion 52 with a predetermined gap from the jet nozzle 56a of the rotor 50. As shown in FIG. 4, the brush body is installed in the bristle ring 62, leaving a space 61 in a portion facing each of the jet nozzles 56a.

Reference numeral 70 denotes an annular vibrating brush, in which the brush body is densely planted over the entire circumference of the flocking ring 71, has an outer diameter smaller than the inner diameter of the water supply and waste water pipe A, and is attached to the bearing of the rotor 50. It is rotatably fitted into the portion 51. As described later, this vibrating brush 70 has the following features:
It is rotated by a jet flow of pressure fluid injected from the jet nozzle 56a and sprayed through the cavity 61 of the rotating brush 60.

Reference numeral 80 denotes a rear guide member which is fitted and fixed to the insertion opening 23 of the rotor shaft 20.

Next, the operation will be explained.

The pressure fluid W such as pressure water that has been fed to the hole 21 of the rotor shaft 20 through the hose 40 is transferred to the side hole 2.
From the nozzle 56a to the cavity 61 of the rotating brush 60 via a pressure fluid path consisting of 2-circumferential groove 55-guide hole 56
The jet is injected towards the The direction of this jet injection is from the tangential direction Y of the rotor 50 to the axial direction Y.
Since the jet is oriented at an angle .alpha., the rotor 50 is driven to rotate at an extremely high speed by the reaction force of the jet injection. Therefore, the rotating brush 60 fitted to the rotor 50 slides on the inner surface of the pipe A at a circumferential speed greater than the circumferential speed of the rotor 50. Since the rotating brush 60 has an outer diameter smaller than the inner diameter of the pipe A, the sliding resistance is small even if the layer thickness of the appendage B on the inner surface of the pipe A is large, so the high speed rotation of the rotor 50 as described above is possible. The surface portion of the appendage is brushed away and a scratch-like flaw is created on the appendage. The jet flow of the injected pressure fluid W wets the contact area between the rotary brush 60 and the inner surface of the pipe A, that is, the brushing part, so the above-mentioned adhesion removed by brushing is quickly washed away and flows to the downstream side of the pipe A. It is discharged from the pipe A.

Furthermore, since the jet stream passes through the cavity 61 of the rotating brush 60 and collides with the vibrating brush 70, the vibrating brush 70 rotates at high speed in the opposite direction to the rotating brush 60, and this vibrating brush 70 is centered on the rotor 50. Due to its eccentricity, it vibrates circularly and hits the inner surface of the pipe A at high speed, and in addition to the brushing action, it applies an action similar to shotplast to the attached material B that has received the scratches. Therefore, the vibrating brush 70 completely removes the deposits that were not removed by the rotating brush 60, even if they are hard, and the removed deposits are also washed away by the pressure fluid W. Since a part of the jet flow of the pressure fluid W hits the inner surface of the pipe A at high speed, the impact action of the jet flow also provides the effect of removing deposits.

The rotor 50 rotates due to the reaction force of the jet injection as described above, but since the direction of the jet injection is diagonally rearward at an angle α with respect to the tangential direction Y of the rotor 50 as described above, the rotor 50 rotates due to the reaction force of the jet injection. Since the force generates a thrust in the direction of the arrow shown in the figure, the pipe cleaner of this embodiment moves forward within the pipe A while performing the two-step brushing removal action described above. Furthermore, a rotating brush 60 and a vibrating brush 70
Since the outer periphery of the brush becomes meandering inside the pipe A, it has the effect of widening the thrust to a large extent, and this widening effect is due to the vibrating brush 70 having more brush elements than the rotating brush 60. It's large. Further, this width-enhancing effect is further promoted by tilting the rotating brush 60 and the vibrating brush 70 backward by predetermined angles θ and θ', as shown in FIG.

Further, in this embodiment, since the front guide member 30 is provided, even if the pipe A has an elbow portion _A1 , the pipe A can smoothly pass through the elbow portion A1.

Furthermore, since the rear guide member 80 is provided, even if the pipe cleaner falls into a pit in the pipe path, it can be easily pulled out from the pit.

In the embodiment described above, a rotary brush 60 that rotates integrally with the rotor 50 and a vibrating brush 70 that rotates relative to the rotor 50 are provided, and the attached matter on the inner surface of the pipe is removed by a two-stage removal action. If the kimono has a small layer thickness and is soft, the rotating brush 60 alone can sufficiently remove the kimono. In this case, the rotating brush 6
The outer diameter of pipe A is approximately the same as the inner diameter of pipe A. or,
The brush body may be made dense over the entire circumference so that the jet flow of the pressure fluid W hits the inner surface of the pipe A without passing through the rotating brush 60.

Also, depending on the type of attachment on the inside of pipe A,
Only the vibrating brush 70 may be provided.

In addition, the rotational speed of the rotor 50, the rotating brush 6
0. The brushing force of the vibrating brush 70 and the above-mentioned thrust force can be adjusted by changing the angle α of the jet nozzle 56a, and the adjustment range is in the radial direction with respect to the axial direction of the rotor 50, as shown in FIG. It can be expanded by changing the angle β (vertical angle in the figure).

In addition, the pressure of the pressure fluid W, the jet nozzle 56a
By changing the number and diameter of the pipes, it can be widely applied to pipes with small to large diameters.

Further, in the above embodiment, the vibrating brush 70 is fitted to the rotor 50, but the bearing portion 51 of the rotor 50
The same thing as above may be provided on the rotor shaft 20 and directly fitted onto the rotor shaft 20.

Further, the front guide member 30 can be omitted by integrally forming a guide surface on the front part of the rotor 50.

In addition to pressure water, high-temperature pressure fluid such as steam is used as the pressure fluid depending on the type of material attached to the inner surface of the pipe, and detergent is mixed in if necessary.

Moreover, if the guide member 30 is made removable, the rotor 5
0 from the rotor shaft 20, the rotating brush 6
0. The vibrating brush 70 can be replaced.

As described above, according to the present invention, a rotor is provided that jets the pressure fluid introduced through the rotor shaft obliquely backward, and a rotary brush that is in almost sliding contact with the inner surface of the pipe and capable of brushing is provided on the rotor. Therefore, the rotary brush can be easily rotated at high speed, and the brushing part can be cleaned while being cleaned with pressure fluid, so the work efficiency is higher than in the past, and it is possible to remove deposits on the inner surface of the pipe. In addition to being able to greatly increase the efficiency, it is also possible to run the product by itself within the pipe due to the thrust generated by the jet injection and the thrust amplification effect of the rotating brush, so the above effects can be obtained with less effort than in the past. In particular, the great advantage is that long pipes can be brushed easily and smoothly.

Furthermore, in the present invention, by eccentrically supporting the vibrating brush on the rotor or the rotor shaft, an action similar to shot blasting can be obtained. Since this material is crushed and removed by brushing, it is possible to efficiently remove the deposits from the inner surface of the pipe regardless of the type of the deposits, and the self-propelling power can be further greatly increased.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of an embodiment of the pipe cleaner according to the present invention, Fig. 2 is a plan view of the main part for explaining the jet nozzle in the above embodiment, and Fig. 3 is a sectional view of the main part of the rotor in the above embodiment. , FIG. 4 is a front view of the rotating brush in the above embodiment, FIG. 5 is a partial view of another embodiment of the vibrating brush and rotating brush, and FIG. 6 is a partial view of another embodiment of the jet nozzle. 20... Rotor shaft, 21... Hole, 22... Side hole, 30... Front guide member, 31... Guide surface, 4
0... Hose, 50... Rotor, 56a... Jet nozzle, 60... Rotating brush, 61... Hole, 70... Vibrating brush, 80... Rear guide member.

Claims (1)

[Scope of Claims] 1. A rotor shaft connected to a hose to which pressure fluid is fed into the interior through the hose, a rotor mounted on the rotor shaft and having a jet nozzle communicating with the interior thereof and facing diagonally rearward; A pipe cleaner comprising a vibrating brush rotatably eccentrically supported on the rotor or the rotor shaft, the vibrating brush being rotationally driven by pressurized fluid injected from the jet nozzle. 2. A rotor shaft connected to a hose to which pressure fluid is fed inside through the hose, and a jet nozzle mounted on the rotor shaft to fixedly support a rotating brush and communicating with the inside of the rotor shaft and facing diagonally rearward. 1. A pipe cleaner comprising: a rotor; and a vibrating brush rotatably eccentrically supported on the rotor or on the rotor shaft, the vibrating brush being rotationally driven by pressurized fluid injected from the jet nozzle.