JP2003053667A - Device and method for cleaning, polishing, and performing substrate treatment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device and a method capable of uniformly, effectively, efficiently, and economically cleaning, polishing or performing substrate treatment by blast machining of an inner face of a pipe having a complicated shape without affecting the pipe. SOLUTION: This device cleans, polishes or performs substrate treatment by inserting a vane 3 rotated by a force of fluid into the pipe 1 which is cleaned and polished and to which substrate treatment is applied, rotating it by the fluid 2 flowing in the pipe, and hitting abrasive grains 5 scattered in the fluid and fed in against the inner face of the pipe by flicking them off by a rotating blade 4. In this device, a diameter of the vane is reduced at an upstream side and a downstream side when compared with that of a central part. This device has a polishing blade at a vane end and an extension part 10 having a flexible joint on a rear stream side. In this method, cleaning, polishing, and substrate treatment of the inner face of the pipe are performed by a suction method using the device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for cleaning, polishing or pre-processing the inside of a pipe, and a method therefor.

[0002]

2. Description of the Related Art A large amount of piping is used for carrying various fluids in buildings, condominiums, various plants and the like. When these pipes are used for a long period of time, rust or corrosion is generated on the inner surfaces thereof, or the deposits narrow the flow paths, so that the function of the pipes is deteriorated and finally the pipes cannot be used.
In order to prevent the deterioration of the function or to recover the deteriorated function, it is necessary to periodically perform a pipe rehabilitation work of cleaning the inner surface of the pipe, polishing, pre-treating, and repainting. For cleaning, polishing or grounding the inner surface of the pipe, insert a mechanically rotating brush, or create an air flow in the pipe by suction or pressing method and send a cleaning / polishing pig on the air flow. Various methods have been put to practical use.

However, the inner surface of the actual pipe is not a straight cylindrical surface, and there are bends, branches, irregular joints, etc.
It has a complicated shape with some parts where the inner diameter is partially narrowed to secure the reinforcement thickness, and there are projections due to welding burn-through and sagging, and recesses such as preliminary seats for measuring instruments. However, it has been difficult to clean and polish every corner or to apply a uniform base treatment to every corner by the above-mentioned conventional method. If the cleaning, polishing, and base treatment are not performed uniformly and sufficiently, the coating applied thereon cannot have strong adhesion or uniformity, and the effect of pipe rehabilitation cannot be fully exerted.

It has been known that blasting, which strikes abrasive particles dispersed in air, gas or liquid, gives a more uniform effect to cleaning, polishing or surface treatment of a surface having a complicated shape. Blasting is also used in part to clean the inner surface of the tube and to prepare the ground surface by creating an air flow in the tube and dispersing abrasive grains in the air flow. However, in order to accelerate the abrasive grains at high speed, the velocity of the air flow itself must be increased, and for that purpose it is necessary to push in the air at high pressure, so cracks and leaks due to the high pressure on the target pipe for cleaning and surface treatment. Not only does it have an adverse effect such as causing the occurrence of electric shock and has a large amount of power consumption, but the abrasive grains simply carried by the air flow inside the pipe mainly fly along the streamline, so cleaning and base treatment Since it runs almost parallel to the inner surface of the target pipe, it is difficult to collide with the inner surface effectively, and at the bent portion of the pipe, the flow is biased to the outside of the bend and the probability of collision decreases inside. Or
It is difficult to achieve uniform and sufficient cleaning, polishing, or base treatment effects in a complicated flow path, such as the recesses of the spare seat of the instrument on the inner surface of the pipe are passed through.

[0005]

Therefore, the problem to be solved by the present invention is to influence the cleaning, polishing or base treatment by blasting of the inner surface of a tube having a complicated shape on the tube which is the object. An object of the present invention is to provide a device and a method that can be performed uniformly, effectively, efficiently, and economically.

[0006]

In order to solve the above-mentioned problems, the cleaning / polishing / priming treatment apparatus of the present invention is designed to clean, grind or prime the impeller rotating by the force of fluid. Insert it into the tube, rotate it with the fluid flowing through the tube, disperse the abrasive grains sent into the fluid and blow it off with a rotating blade, and hit the inner surface of the tube to perform cleaning, polishing, or ground treatment. Is characterized by.

The fluid that rotates the impeller is a pipe that is the target of cleaning, polishing, or surface treatment (hereinafter referred to as "target pipe").
Since it is flowing through the inside, a vane wheel having vanes that are appropriately inclined with respect to the tube axis direction easily receives a fluid force and rotates at a high speed. The blades rotating at high speed randomly flick the abrasive grains dispersed in the fluid and sent, and hit them against the inner surface of the pipe in the vicinity thereof. The abrasive grains are randomly flicked and the direction of the abrasive grains is not fixed, and it goes in multiple directions, and is repelled by a blade that rotates at high speed and fly at high speed, so a sharper angle toward the inner surface of the target pipe, and high-energy abrasive grains are effective. Can be collided with each other. Further, even if the target tube is bent, branched, deformed joint, has a complicated shape having concave portions or projections on the inner surface, and the probability that the abrasive particles collide uniformly with the conventional method is low, it is uniform and The abrasive grains can be reliably collided with each other to provide a sufficient blasting effect, and the work can be efficiently advanced.

Further, in the conventional blasting method in which a stream of air is simply passed through the pipe to disperse the abrasive grains and fly them, there is no method other than increasing the flow velocity of the stream of air in order to give a sufficient velocity to the abrasive grains. The effect could not be expected unless a high-speed airflow was created using the construction method, but according to the present invention, the abrasive grains are greatly accelerated by being hit by the impeller, so the airflow speed may be relatively low, A sufficient blasting effect can be obtained even by a low pressure pressing method or a suctioning method in which the differential pressure is only 1 atm at maximum, and the high pressure reduces the effect on the target pipe, and also has the effect of energy saving.

The shape of the impeller is not particularly limited because it is required to rotate at a high speed by receiving the force of the fluid, and a shape generally used as a wind turbine or a water turbine, or a simplified shape thereof, for example, It may be one in which several flat plates are obliquely attached to the shaft. Further, since the impeller does not necessarily grind while contacting the inner wall of the target pipe like a polishing pig, it is not essential to make its diameter substantially equal to the pipe diameter of the target pipe. It may be selected in consideration of the size that can pass through the large and small pipes forming the pipe system.

Compared with the conventional blasting of the inner surface of the pipe, only a small impeller is added as a facility, so that a high profitability can be obtained if a uniform and sufficient finish and work efficiency are taken into consideration. In addition to the energy saving effect of, it has an effect of being excellent in economic efficiency.

In the present invention, the diameter of the impeller may be reduced from the central portion toward the upstream side and the downstream side of the fluid.

When the blade is designed in consideration of the shape and strength of the blade, and the stability of the attitude of the impeller when receiving the force of the fluid, the impeller is oriented in the direction of the fluid, that is, in the axial direction of the target pipe. The shape has a certain length. In that case, if it is manufactured so that the diameter is the same in all parts in the axial direction of the pipe, when it is used for a target pipe with a diameter almost equal to the diameter of the impeller, the impeller will not be bent at the curved part of the target pipe It may get caught or stop. By changing the diameter of the impeller along the direction of the fluid, making the center part the largest and making the upstream side and the downstream side smaller, for example, the entire impeller is a virtual sphere with a diameter equal to the diameter of the center part. By changing the diameter along the direction of the fluid so as to be inscribed in, there is an effect that it is possible to prevent the target pipe from being stopped at a bent portion or the like and to have more maneuverability.

In the present invention, the blade tip of the impeller may be provided with a polishing blade. The impeller, which is supported so that its axis position and direction can be relatively freely changed, rotates at high speed to repel abrasive grains and collide with the inner surface of the target tube while colliding with the inner surface. By attaching a polishing blade made of a hard material to the wing tip of the impeller, it has a mechanical polishing effect in addition to the blasting effect.

Further, according to the present invention, a flexible extension may be provided on the downstream side of the impeller. By rotating the flexible extension together with the impeller at high speed, the axial direction of the impeller is stabilized and serves as a guide in the traveling direction.
The extension itself hits the inner surface of the target tube, or repels the abrasive grains dispersed and dispersed in the fluid to collide with the inner surface of the target tube, thereby increasing the effect of cleaning and ground treatment.

According to the present invention, the rope is attached to the upstream side of the impeller via a rotatable joint, the impeller is inserted into the target pipe from the upstream side of the fluid, and the length of the rope is adjusted. According to the method, cleaning, polishing, or base treatment is performed at an arbitrary point on the target pipe.

To rotatably support the impeller of the present invention, various methods such as attaching the impeller to the tip of a supporting shaft via a bearing can be considered. Here, a rope is attached to the impeller via a rotatable joint, and the impeller is inserted into the target pipe from the upstream side of the fluid. The force of the fluid causes the impeller to rotate into the target tube, which is held at the length of the rope and randomly disperses the abrasive particles that are dispersed and fed into the fluid.

By using a rope, the impeller can be inserted at an arbitrary position regardless of the bend of the target pipe, and by changing the length of the rope little by little, the position of the impeller can be changed along the route of the target pipe. In other words, there is an effect that the entire target pipe can be efficiently blasted. Further, particularly in a portion where cleaning, polishing, or ground treatment is desired, the impeller can be fixed at that point for a while, or the impeller can be reciprocated across the point.
In addition, by supporting the impeller with a rope, the position and direction of the impeller shaft can be changed relatively freely, and the effect that the polishing effect can be expected when the blade is attached to the blade tip can be expected. Occurs.

Further, according to the present invention, an air stream is created in the target tube by a suction or pressing method, abrasive grains are dispersed and fed into the air stream, and any one of the above devices is inserted to clean the inner surface of the target tube. This is a method of performing polishing or base treatment.

The inside of the target pipe is sucked with a vacuum pump or pressed with a compressor to form an air flow, as in the conventional pipe rehabilitation method using a pig. In the same manner as in the case of conventional blasting, abrasive grains are dispersed and sent into this air flow, and the above-mentioned cleaning / polishing / priming treatment device is inserted and operated to perform cleaning, polishing or priming treatment. is there. By simply adding the simple equipment according to the present invention, the blasting of the inner surface of the pipe having a complicated shape can be performed more uniformly, more reliably, and efficiently. Since a sufficient blasting effect can be obtained even by the construction method or the suction construction method in which the differential pressure is only 1 atm at maximum, it does not adversely affect the target pipe and has an effect of energy saving.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. Needless to say, the present invention is not limited to this embodiment, and various modifications may be made to its specific structure within the scope of the present invention. FIG. 1 is an explanatory view showing the operation of the cleaning / polishing / base treatment apparatus of the present invention, FIG. 2 is a perspective view showing the configuration of a first embodiment of the apparatus, and FIG. 3 is a second embodiment of the apparatus. FIG. 4 is a side view showing the configuration of FIG. 4, and FIG. 4 is an explanatory view of a method of cleaning, polishing or grounding the inner surface of the target tube using the same apparatus.

As shown in FIG. 1, the cleaning / priming apparatus of the present invention uses a blade 4 of an impeller 3 which is rotated by the force of a fluid 2 flowing in a target tube 1 to be cleaned, polished, or primed so that the fluid 2 The abrasive grains 5 dispersed and sent to the inner surface of the target pipe 1 in the vicinity of the impeller 3 are struck by being repelled at high speed in a random direction.

[0022]

First Embodiment In the first embodiment shown in FIG. 2, the impeller 3 is composed of four blades 4 attached to a shaft 6 with a twist in the direction of the fluid 2. In order to rotatably support the impeller 3, in this embodiment, the shaft 6 is connected to the rope 8 via the rotary joint 7. According to the experiment using this example, by flowing the fluid 1 at an appropriate flow rate, 1000
Thus, the impeller 3 could be rotated at a rotation speed of 3000 rpm. Due to this high-speed rotation, the abrasive grains 5 do not pass through the impeller 3 and are randomly scattered by the blades 4 as shown in FIG. Clash with.

Further, in this embodiment, an extension portion 10 having a flexible joint 9 is provided on the downstream side of the fluid of the impeller 3. By the extension portion 10 rotating integrally with the impeller 3,
The rotation axis direction of the impeller 3 is stabilized, the curved portion of the target tube 1 serves as a guide in the traveling direction of the impeller 3, and the extension portion 10 itself is acted by the flexible joint 9 by the action of the flexible joint 9.
The inner surface of the target tube 1 is hit, or the abrasive grains 5 are repelled and hit to the inner surface of the target tube 1. In order to exert these effects more effectively, it is conceivable to change the shape of the tip portion of the extension portion 10 or attach an attachment to the tip portion.

[0024]

Second Embodiment In the second embodiment shown in FIG. 3, the blades 4a of the impeller 3a are inscribed in a virtual elliptical sphere, that is, a sphere 11 rotated about one of its axes. Is made. This is an example in which the shape of the impeller is reduced from the center toward the upstream and downstream sides of the fluid. By adopting this shape, as compared with the case of the shape of FIG. 2 which is inscribed in the cylinder, the possibility of being caught or stopped at a bent portion in the target tube is reduced, and maneuverability is improved. Elliptical sphere 1
Even if it is inscribed in a sphere instead of 1, or as a whole, a wing is manufactured in a shape that inscribes in a cylinder and its upstream side and downstream side are partially cut diagonally to reduce the diameter. , You can expect the same effect.

Further, in this embodiment, a polishing blade 4b made of a hard material is attached to the end of the blade 4a. Rope 8
The impeller 3a, which is relatively freely supported in the target pipe by a, rotates at high speed and appropriately changes the position and direction of the shaft 6a,
While rotating itself against the inner surface of the target tube, it collides with it and exerts a polishing effect.

Further, in this embodiment, as in the first embodiment, in addition to providing the extension portion 10a having the flexible joint 9a on the downstream side of the fluid of the impeller 3a, the flexible joint 9 from the shaft 6a is provided.
It is connected to a rope 8a via an extension 10b having b and a rotary joint 7a. By sandwiching the flexible extension portion 10b between the impeller 3a and the rope 8a, the rope 8
When the cleaning / grinding device is unloaded and the cleaning / grinding process is completed and the cleaning / priming device is collected by winding the rope 8a, the extension part serves as a guide and the device is caught at the bent part of the target pipe. It has the effect of preventing the suspension.

FIG. 4 shows a method for cleaning the inner surface of the target tube or performing the surface treatment using the cleaning / priming apparatus of the present invention. In this example, the suction method is used. In the case of the pressing method of pushing air with a compressor instead of the suction method, although the details of the implementation are different, such as the addition of a sealing mechanism for sending abrasive grains and rope into high pressure, the basic idea is Is the same.

In general, the pipe 1 to be cleaned, polished or ground is often provided with a bend 1a, a branch 1b, a different diameter joint 1c and the like. Therefore, first, a route for cleaning or base treatment is selected in the target tube 1 by a series of operations. In FIG. 4, the path from the tube end 12 to the tube end 13 is selected. An abrasive grain collecting device 15a and a vacuum pump 15b are connected to one end 13 thereof via a temporary pipe 14 such as a pressure resistant hose, and the other end 12 of the path is connected.
A hopper 16 for the abrasive grains 5, a feeder 17 for the abrasive grains 5, and a pipe 18 for supplying the abrasive grains to the target pipe 1 are provided. Further, a rope winding device 20 having a guide pulley 19 of the rope 8, a rotation driving unit and a control unit (not shown) thereof is provided. Blind lids 21 and 22 are attached and closed in advance to the branch pipes 1d and the inter-branch 1e that have not been selected as the route this time among the target pipes 1.

The cleaning / polishing / priming device 23 is inserted into the target pipe, and the rope winding device 20 is moved to move the rope 8
The device 23 to support the starting position.
The vacuum pump 15b is activated to create an air flow in the selected path, and the feeder 17 is moved to disperse the abrasive grains 5 stored in the hopper 16 into the air flow through the supply pipe 18. The impeller 3 starts to rotate at a high speed by the air flow, and the coating particles are struck on the inner wall of the target tube 1 to perform cleaning, polishing or ground treatment. The rotation of the rope winding device 20 is controlled to advance the cleaning / polishing / primary processing device 23 along the path to perform blast processing. In a portion where cleaning, polishing, or base treatment is to be performed intensively, the rope winding device 20 is controlled to fix the cleaning / polishing / base treatment device 23 at that point for a while, or reciprocate by sandwiching the point. It is also effective to perform the operation of. The abrasive grains that have reached the pipe end 13 by riding the air flow are collected by the abrasive grain collecting device 15a.

Cleaning / polishing / priming device 2 up to pipe end 13
3 is advanced to complete a series of operations. Vacuum pump 1
By stopping 5b and operating the rope winding device 20 to wind up the rope 8, the cleaning / polishing / priming device 23 is collected at the tube end 12. In order to clean a portion which is not selected as a route, for example, the branch pipe 1e, the blind lid 22
The temporary pipe 14 may be removed, the pipe end 13 may be closed with a blind lid, a path including the branch pipe 1e may be formed, and the same operation may be repeated. If the recess such as the spare seat 1f of the instrument is shallow, the abrasive grains 5 that are blown off by the impeller 3 are randomly distributed in multiple directions when cleaning, polishing, or preparatory processing the pipe in which it is installed. Since it moves at a high speed, the effect of cleaning, polishing or base treatment can be expected without the need to separately pick up the part and work.

[0031]

As described above, the cleaning, polishing, and
The surface treatment apparatus and the method of using the apparatus, by randomly flicking by a blade rotating at a high speed, toward the inner surface of the target tube at a more acute angle, it is possible to effectively collide the high energy abrasive grains, Even if the inner surface of the target tube has a complicated shape, it is possible to cause the abrasive particles to uniformly and surely collide with each other, and to provide a sufficient blasting effect, so that the work can be efficiently advanced. Have.
Further, since the abrasive grains are greatly accelerated by being hit by the impeller, the velocity of the air flow may be relatively low, and a sufficient blasting effect can be obtained even with a low pressure pressing method or a suction method, so the target tube The effect on energy consumption is also reduced. Further, as compared with the conventional blasting of the inner surface of the pipe, only a small impeller is added as a facility, so that it has an effect of being excellent in economy together with the above-mentioned energy saving effect.

In the cleaning / polishing / priming apparatus of the present invention, the shape of the impeller is devised, the blade is provided with a polishing blade, a flexible extension is added, or
By attaching a rope via a rotatable joint to the upstream side of the impeller, it makes it more manoeuvrable and further enhances the effect of cleaning, polishing or ground treatment, or
Regardless of the bending or branching of the target pipe, the selected route is processed by a series of operations, and at the point where you want to polish the target pipe, fix or reciprocate the temporary impeller at that point. It has an effect that the whole can be efficiently cleaned, polished or ground-treated.

[Brief description of drawings]

FIG. 1 is an explanatory view showing the operation of a cleaning / polishing / primary treatment device of the present invention.

FIG. 2 is a perspective view showing the configuration of the first embodiment of the cleaning / polishing / primary processing apparatus of the present invention.

FIG. 3 is a side view showing the configuration of the second embodiment of the cleaning / polishing / primary surface treatment apparatus of the present invention.

FIG. 4 is an explanatory view of a method for cleaning, polishing or preparatory treating the inner surface of the target tube using the cleaning / polishing / primary treatment device of the present invention.

[Explanation of symbols]

1 Target pipes for cleaning, polishing or surface treatment 1a bend 1b branch 1c Different diameter joint 1d, 1e Branch pipe 1f Spare measurement seat 2 fluid 3,3a wing wheel 4, 4a wings 4b Polishing blade 5 abrasive grains 6,6a axis 7,7a rotary joint 8,8a rope 9, 9a, 9b Flexible joint 10, 10a, 10b extension 11 virtual ellipsoid 12, 13 Pipe end of the selected route among the target pipes 14 Temporary pipe 15a Abrasive recovery device 15b vacuum pump 16 abrasive grain hopper 17 Abrasive feeder 18 Abrasive supply tube 19 Guide pulley 20 Rope winding device 21, 22 Blind lid 23 Cleaning / polishing / base treatment equipment

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[Procedure amendment]

[Submission date] April 19, 2002 (2002.4.1)
9)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Claims

[Correction method] Change

[Correction content]

[Claims]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction content]

[0006]

In order to solve the above-mentioned problems, the cleaning / polishing / priming treatment apparatus of the present invention is designed to clean, grind or prime the impeller rotating by the force of fluid. Insert it into the tube and rotate it with the fluid flowing in the tube by the suction method.The abrasive particles dispersed in the fluid and sent into the tube are repelled by the rotating blades and struck against the inner surface of the tube for cleaning, polishing or ground treatment. Is basically done.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction content]

Further, in the conventional blasting method in which a stream of air is simply passed through the pipe to disperse the abrasive grains and fly them, there is no method other than increasing the flow velocity of the stream of air in order to give a sufficient velocity to the abrasive grains. The effect could not be expected unless a high-speed airflow was created using the construction method, but according to the present invention, the abrasive grains are greatly accelerated by being hit by the impeller , and the speed of the airflow is increased.
Can be relatively low, so a sufficient blasting effect can be obtained even with a suction method in which the differential pressure can take a maximum of 1 atm.
it can. By using the suction method, it is possible to reduce the influence of high pressure on the target pipe and also to save energy.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction content]

In addition to the basic structure described above, the present invention is further characterized in that the diameter of the impeller becomes smaller from the central portion toward the upstream side and the downstream side of the fluid .

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction content]

Further, the present invention is characterized in that the blade tip of the impeller has a polishing blade . The impeller, which is supported so that its axis position and direction can be relatively freely changed, rotates at high speed to repel abrasive grains and collide with the inner surface of the target tube while colliding with the inner surface. By attaching a polishing blade made of a hard material to the wing tip of the impeller, it has a mechanical polishing effect in addition to the blasting effect.

[Procedure correction 6]

[Document name to be amended] Statement

[Correction target item name] 0014

[Correction method] Change

[Correction content]

[0014] This in addition to the above-described configuration, furthermore, the present invention is to provide an extension having a flexible joint downstream after the wheel
And are characterized. By rotating the extension having a flexible joint together with the impeller at high speed, the impeller is stabilized in the axial direction and serves as a guide in the traveling direction.In addition, the extension itself strikes the inner surface of the target pipe, Alternatively, there is an effect that the abrasive grains that are dispersed and flowing in the fluid are repelled and collide with the inner surface of the target tube to increase the effects of cleaning and base treatment.

[Procedure Amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0017

[Correction method] Change

[Correction content]

By using a rope, the impeller can be inserted at an arbitrary position regardless of the bend of the target pipe, and by changing the length of the rope little by little, the position of the impeller can be changed along the route of the target pipe. In other words, there is an effect that the entire target pipe can be efficiently blasted. Further, particularly in a portion where cleaning, polishing, or ground treatment is desired, the impeller can be fixed at that point for a while, or the impeller can be reciprocated across the point.
By supporting the impeller with a rope, the position and direction of the impeller shaft can be relatively freely changed, and the effect of attaching a polishing blade to the tip of the impeller can be expected sufficiently.

[Procedure Amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction content]

Furthermore, the present invention is a method of suctioning into a target tube.
To generate an air flow by means of which the abrasive grains are dispersed and fed into the air flow, and insert any of the above-mentioned devices to perform cleaning, polishing, or base treatment of the inner surface of the target tube.

[Procedure Amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Change

[Correction content]

Suction the inside of the target tube using a vacuum pump
The airflow is formed by the same method as in the conventional pipe rehabilitation method using a pig. In this air flow, abrasive particles are dispersed and sent in the same way as in the case of conventional blasting,
This is a method in which the above-mentioned cleaning / polishing / priming treatment device is inserted and operated to perform cleaning, polishing or priming treatment. Only adds simple equipment according to the present invention, the blasting of the inner surface of the pipe having a complicated shape, more uniform, more reliably, and efficiently can be carried out, further, as described above
A sufficient blasting effect can be obtained even with a suction method in which the differential pressure is at most 1 atm, so that the target pipe is not adversely affected and energy saving is achieved.

[Procedure Amendment 10]

[Document name to be amended] Statement

[Correction target item name] 0020

[Correction method] Change

[Correction content]

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. Needless to say, the present invention is not limited to this embodiment, and various modifications may be made to its specific structure within the scope of the present invention. Figure 1 is an explanatory diagram showing the operation of cleaning and polishing, substrate treatment apparatus of the present invention, FIG 2 is a perspective view showing the configuration of an embodiment of the apparatus, the side surface 3 is showing a more detailed structure of the embodiment FIG. 4 and FIG. 4 are explanatory views of a method of cleaning, polishing or priming the inner surface of the target tube using the same apparatus.

[Procedure Amendment 11]

[Document name to be amended] Statement

[Name of item to be corrected] 0022

[Correction method] Change

[Correction content]

In the embodiment shown in FIG . 2 , the impeller 3 comprises four blades 4 mounted on a shaft 6 with a twist in the direction of the fluid 2. In order to rotatably support the impeller 3, in this embodiment, the shaft 6 is connected to the rope 8 via the rotary joint 7. According to the experiment using this example,
By flowing fluid 1 at an appropriate flow rate, 1000 to 3
The impeller 3 could be rotated at a rotation speed of 000 rpm. Due to this high-speed rotation, the abrasive grains 5 do not pass through the impeller 3 and are randomly scattered by the blades 4 as shown in FIG. Clash with.

[Procedure Amendment 12]

[Document name to be amended] Statement

[Name of item to be corrected] 0024

[Correction method] Change

[Correction content]

A more detailed structure is shown in FIG. Wing of impeller 3
Reference numeral 4 is made so as to inscribe a virtual elliptical sphere, that is, a sphere 11 rotated about one of its axes. This is an example in which the shape of the impeller is reduced from the center toward the upstream and downstream sides of the fluid. By adopting this shape , if the entire impeller is inscribed in a cylinder
Compared with, the possibility of being caught or stopped by a bent portion in the target pipe is reduced, and maneuverability is improved. Even if it is inscribed in a sphere instead of the elliptical sphere 11, or as a whole, a blade is manufactured in a shape inscribed in a cylinder, and the upstream side and the downstream side thereof are partially cut obliquely to reduce the diameter. With the shape, the same effect can be expected.

[Procedure Amendment 13]

[Document name to be amended] Statement

[Name of item to be corrected] 0025

[Correction method] Change

[Correction content]

[0025] The polishing blade 4b of a hard material on an end portion of the blade 4 is attached. The impeller 3 supported in the target tube relatively freely by the rope 8 rotates at a high speed and appropriately changes the position and direction of the shaft 6 , and collides with the inner surface of the target tube while colliding with itself to exert a polishing effect. .

[Procedure Amendment 14]

[Document name to be amended] Statement

[Correction target item name] 0026

[Correction method] Change

[Correction content]

Furthermore, in this figure, unlike FIG. 2, the rope 6 is connected from the shaft 6 through an extension portion 10b having a flexible joint 9b and a rotary joint 7 . Has a flexible joint 9b
By sandwiching the that extension portion 10b between the impeller 3 and the rope 8, a series of clean feed rope 8, polishing or after surface treatment operation is finished, recovered cleaning and surface treatment device winding the rope 8 When this is done, the extension portion serves as a guide, which has the effect of preventing the device from being caught and stopped at the bent portion of the target pipe.

[Procedure Amendment 15]

[Document name to be amended] Statement

[Name of item to be corrected] 0027

[Correction method] Change

[Correction content]

FIG. 4 shows a method of cleaning the inner surface of the target tube or performing the surface treatment by the suction method using the cleaning / substrate processing apparatus of the present invention.

[Procedure Amendment 16]

[Document name to be amended] Statement

[Correction target item name] 0031

[Correction method] Change

[Correction content]

[0031]

As described above, the cleaning, polishing, and
The surface treatment apparatus and the method of using the apparatus, by randomly flicking by a blade rotating at a high speed, toward the inner surface of the target tube at a more acute angle, it is possible to effectively collide the high energy abrasive grains, Even if the inner surface of the target tube has a complicated shape, it is possible to cause the abrasive particles to uniformly and surely collide with each other, and to provide a sufficient blasting effect, so that the work can be efficiently advanced. Have.
In addition, the abrasive grains are greatly accelerated by being hit by the impeller, which causes air flow.
The suction speed is sufficient because the speed of
A blast effect can be obtained , the influence on the target pipe is reduced, and an energy saving effect is obtained. Further, as compared with the conventional blasting of the inner surface of the pipe, only a small impeller is added as a facility, so that it has an effect of being excellent in economy together with the above-mentioned energy saving effect.

[Procedure Amendment 17]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 is an explanatory view showing the operation of a cleaning / polishing / primary treatment device of the present invention.

FIG. 2 is a perspective view showing a configuration of an embodiment of a cleaning / polishing / base treatment apparatus of the present invention.

FIG. 3 is a more detailed view of the cleaning / polishing / priming apparatus of the present invention.
It is a side view which shows a simple structure.

FIG. 4 is an explanatory view of a method for cleaning, polishing or preparatory treating the inner surface of the target tube using the cleaning / polishing / primary treatment device of the present invention.

[Explanation of reference numerals] 1 target pipe 1a for cleaning, polishing or ground treatment 1b bend 1b branch 1c different diameter joint 1d, 1e branch pipe 1f spare measurement seat 2 fluid 3 impeller 4 blade 4b polishing blade 5 abrasive grain 6 axis 7 rotation Joint 8 Rope 9, 9b Flexible joint 10, 10b Extension 11 Virtual elliptical sphere 12, 13 Pipe end 14 of path selected in the target pipe Temporary pipe 15a Abrasive grain collecting device 15b Vacuum pump 16 Abrasive hopper 17 Abrasive grain feeder 18 Abrasive grain supply pipe 19 Guide pulley 20 Rope winding device 21, 22 Blind lid 23 Cleaning / polishing / priming device

[Procedure 18]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 3

[Correction method] Change

[Correction content]

[Figure 3]

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Claims (6)

[Claims] 1. An impeller rotating by the force of a fluid is inserted into a pipe to be cleaned, polished or ground, and is rotated by the fluid flowing in the pipe and is dispersed and fed into the fluid. A cleaning / polishing / primary treatment device that repels abrasive grains with a rotating blade and hits the inner surface of the pipe to clean, polish or prime the surface. 2. The cleaning / polishing / primary treatment device according to claim 1, wherein the diameter of the impeller is reduced from the center toward the upstream side and the downstream side of the fluid. 3. The cleaning / polishing / polishing / polishing / polishing / polishing / polishing / polishing / polishing / polishing / polishing / polishing / polishing / grinding / polishing / polishing / grinding
Substrate processing equipment. 4. The cleaning / polishing / priming apparatus according to claim 1, wherein an extension having flexibility is provided on the downstream side of the impeller. 5. A rope is attached to the upstream side of the impeller via a rotatable joint, and the impeller is inserted from the upstream side of the fluid into a pipe to be cleaned, polished or grounded. The cleaning, polishing, and base treatment according to any one of claims 1 to 4, wherein cleaning, polishing, or base treatment is performed at an arbitrary point of the pipe by adjusting the length of the rope. apparatus. 6. The method according to any one of claims 1 to 5, wherein an air flow is generated by suction or a pressing method into a pipe to be cleaned, polished or ground, and the abrasive grains are dispersed and fed into the air flow. A method of performing cleaning, polishing, or surface treatment of the inner surface of the tube by inserting the cleaning / polishing / base treatment apparatus described in the above.