JPH06238249A - Pipe interior cleaning device - Google Patents

Abstract

PURPOSE:To provide a pipe interior cleaning device suitable for removing the scale difficult to remove heretofore bonded to the inner wall of the pipe in a water supply pipeline or a drain pipeline capable of cleaning the inner wall of the pipe without hindrance even in a pipeline having a large number of pipe joints forming bent parts. CONSTITUTION:A pipe interior cleaning device consists of the joining member 7 connected to the front end of a flexible wire 1, the spiral spring member 13 fixed to the joining member 7 at one end thereof and a cleaning head 14 having the attaching member 15 attached to the other end of the spiral spring member 13 and having a plurality of short strip-shaped cleaning blades 21 of which at least the outer surfaces are formed of a synthetic resin having elastical flexibility radially extended to the outside in the peripheral direction thereof and fixed thereto at different positions in a spitting state in the diameter direction thereof.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention removes dross adhering to the inner wall of a pipeline including a pipe joint portion that forms a curved pipe portion by inserting it into a pipeline such as a water supply pipe and a distribution pipe in a building. It relates to a cleaning instrument for pipes.

[0002]

2. Description of the Related Art As a tool for inserting into a water supply pipe, a water distribution pipe or the like in a building to clean the pipe while propelling the inside thereof, as disclosed in, for example, Japanese Patent Laid-Open No. 189086/1983. At the tip of the snake wire to be inserted, attach a spiral coil-shaped cleaning head with a diameter larger than the snake wire concentrically with the snake wire, insert such an instrument into the tube while applying rotation, and insert the tip of the cleaning head. The clogging that blocks the pipeline is pierced and held in, and the instrument is pulled out to remove the clogging, or if the clogging is grease-like, replace it with a spiral coil cleaning head, It is known that a cutter blade head having a plurality of elongated claws extending radially forward from the center is attached to the tip of a snake wire, and such a tool is used for grease cutting. In such a device, when the spiral coil head is used, it does not hinder the removal of the clogging in the conduit when it is in a single form, but the clogging is integrally attached to the conduit. It is extremely difficult to pierce and remove the tip edge of the cleaning head in the case of dust that is present, and when using the cutter blade head for the grease-like blockage, when removing the dust. The cutter blade does not come into close contact with the entire inner wall of the pipeline so as not to leave a residue of dross, and the metal cutter blade contacts the pipeline during cleaning and produces a loud noise, which causes the habitation. This is uneconomical because it causes a great deal of discomfort to the operator, and when the cutter blade wears, the entire blade mounting portion including the blade mounting portion is replaced.

[0003]

SUMMARY OF THE INVENTION The problem to be solved by the present invention is to solve the problems of the above-described conventional pipe cleaning equipment, and it is difficult to remove the water supply pipe and the drain pipe. It is suitable for removing the dross adhering to the inner wall of the pipe, and it is possible to clean the inner wall of the pipe without hindrance even in a pipe line that has many pipe joints that form bends, and low noise during cleaning Another object of the present invention is to provide an in-pipe cleaning instrument that has a low cost of replacement parts and can be easily replaced.

[0004]

In order to solve the above-mentioned problems, the pipe cleaning tool of the present invention is in a state in which mutual rotation is not possible with a connecting member fixed to the front end of a flexible wire to which rotational force and axial force are transmitted. A joining member to be joined together, a coiled spring member having one end fixed to the joining member, a front body portion and a rear body portion integrally formed with the front body portion and fixed to the other end of the stringing spring member. A plurality of cleaning blades having elastic flexibility, each of which has a mounting member provided and has a strip shape on the front body portion and at least the outer surface of which is made of synthetic resin, is radially outward from the axial center. The main feature of the cleaning head is that it comprises a cleaning head whose position is changed in the circumferential direction so as to extend and which is skewered and fixed in the radial direction.

[0005]

The plurality of cleaning blades skewered and fixed to the attachment member by elastically advancing along the pipe inner wall by advancing or moving the cleaning instrument forward or backward while applying rotation to the pipe inner wall. Since the tip of the cleaning blade is in contact with the inner wall of the pipe in the crimped state over the entire circumference, it will move axially with rotation. Can clean inside the pipe.
Even when the cleaning head hangs on the pipe joint that forms the pipe bend of the pipe, the only part of the cleaning head that contacts the pipe inner wall is the cleaning blade, which increases the grinding at the pipe bend. The cleaning blade, which has elastic flexibility according to the resistance, easily elastically deforms with its tip end inward and reduces the resistance for passage through the pipe, so the cleaning head can easily bend the pipe. Since it is possible to pass through the portion, there is no possibility that the forward or backward movement of the cleaning head is stagnated at the bent portion of the pipe. Cleaning blade
Since at least its outer surface is made of synthetic resin,
Although the tip of the cleaning blade comes into contact with the inner wall of the pipe in a crimped state during cleaning, it is possible to reduce noise generation.

The cleaning blade can be elastically bent forward and backward with respect to the mounting member.
The cleaning tool can be effectively used when cleaning the inside of the pipe by advancing the cleaning head forward with the cleaning head forward and when cleaning the inside of the pipe by moving the cleaning head rearward. The cleaning blade has a simple strip shape, can be manufactured at low cost, and is fixed to the mounting member in a skewered state, so replace the worn cleaning blade. Is easy. Since the cleaning blade is fixed to the mounting member in a skewered shape, it is possible to transmit a sufficient scraping stress to the cleaning blade from the mounting member despite the simple fixing means. Since the coiled spring member is interposed between the mounting member to which the cleaning blade is mounted and the joining member, the tip of the cleaning blade does not contact and damage the flexible wire, and the coiled spring member is the cleaning blade. It serves as a buffer member for the stress transmitted to the change in the grinding resistance applied to the. Since the cleaning device is joined to the connecting member fixed to the front end of the flexible wire by the joining member, the entire cleaning device can be replaced or another type of cleaning device can be attached instead of the cleaning device according to the present invention. It is easy to do.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The detailed features of the present invention will be described with reference to the embodiments shown in the accompanying drawings. In FIGS. 1 and 4, reference numeral 1 is a flexible wire for transmitting a rotational force and an axial force to the cleaning instrument of the present invention. The flexible wire 1 is generally made of a spring steel wire, has sufficient strength to apply a rotational force and an axial force to a cleaning head, which will be described later, provided at the tip, and at the bent portion of the duct to be propelled. Also, it has the flexibility to bend along the bent portion by elastic deformation. As is apparent from FIG. 4, the flexible wire 1 is inserted with a light metal connected stringed flexible tube 1a. Reference numeral 2 is a connecting member, which is made of a metal material such as brass and has a circular outer periphery, a circular through hole 3 is bored in the center thereof, and the circular through hole 3 is communicated with the rear surface thereof. Thus, the sleeve 4 is provided so as to project. Further, on the front surface, a diametrical dovetail-shaped projection 5 is provided so as to engage with each other and transmit the rotational force and the front-rear axial force when the cleaning head described later is joined. Further, a pair of screw stop through holes 6 are formed near the outer periphery of the connecting member 2.

The front end of the flexible wire 1 is fixed to the outer periphery of the sleeve 4 projecting from the rear surface of the support plate 2 in a sandwiched state by utilizing the elastic force of the wire. In order to ensure this fixation, it is desirable to provide a spiral groove along the irregularities of the wire on the outer circumference of the sleeve 4. In the cleaning device according to the present invention, reference numeral 7 is a joining member joined to the connecting member 2. Similar to the connecting member 2, the joining member 7 is generally made of a metal material such as brass and has a circular outer periphery, and a boss 8 is provided on the front surface in a protruding manner. At the rear end of the joining member 7, a flat joining end surface 9 that is joined closely to the joining member 2 is formed, and at the same time, the joining member 2
The dovetail-shaped recessed groove 10 for transmitting the rotational force applied to the connecting member 2 and the front-back axial force to the cleaning head, which will be described later, is formed by fitting into the dovetail-ridge projection 5 in FIG. Further, a pair of screw-fastening screw holes 11 corresponding to the positions of the pair of screw-fastening through holes 6 of the connecting member 2 are formed by penetrating in the front-rear direction. In the figure, reference numeral 12 is a set of joining screws, and when joining the joining member 7 to the connecting member 2, the joining screws 7 are respectively inserted from the pair of screw through holes 6 into the pair of screw fastening screw holes 11. It is screwed on.

A rear end of the spiral spring member 13 is fixed to the outer periphery of the boss 8 projecting from the front surface of the joining member 7 in a sandwiched state by utilizing its elastic force. In order to ensure this fixation, it is desirable that a spiral groove is provided on the outer periphery of the boss 8 along the irregularities of the spiral spring member 13. String spring member 13
Is made of spring steel wire and has a length greater than half the length of the cleaning blade described below. The front end of the spiral spring member 13 is fixed to the cleaning head 14. The cleaning head 14 mainly includes the cleaning blade 21 and the cleaning blade 21.
Is attached to the coiled spring member 13, and the fixation to the coiled spring member 13 is as shown in FIGS.
Rear body 16 made of steel and having a circular outer shape
The elastic force of the coiled spring member 13 is used to pinch the outer periphery of the coil. In order to secure this fixation, the spiral spring member 13 is provided on the outer periphery of the rear body portion 16.
It is desirable that the spiral groove be provided along the unevenness of.

In the mounting member 15 of this embodiment, the front body portion 17 has a larger diameter than the rear body portion 16, and the front body portion 17 has a larger diameter.
A plurality of long holes 18 for skewer penetrating on the outer periphery of the front body are formed at regular intervals in the front-rear direction. Screw hole 20 is screwed. Reference numeral 21 is a cleaning blade that directly contacts the inner wall of the pipe for cleaning, and has a strip shape as shown in FIG. 2, and is generally a synthetic resin having elasticity and flexibility, for example. It is composed of a relatively hard molded product such as polyethylene or ABS resin. In addition to such a synthetic resin simple substance, a laminated structure in which a metal body having elastic flexibility such as a steel plate or a steel net is embedded in a plate-shaped outer coating layer of synthetic resin is also provided. It is also possible to adopt. In the case of such a laminated structure, since the flexibility of the metal body can be utilized in addition to the flexibility of the synthetic resin itself, the elastic range for the bending of the cleaning blade 21 can be widened to further enhance the cleaning effect. You can Since the cleaning blade 21 has a simple structural shape as described above, it can be manufactured at low cost and is suitable as a member that should be frequently replaced in the cleaning operation.

The cleaning blade 21 is provided with a central through hole 22 in the center thereof, and each of the long holes 1 for skewering is provided.
8, the cleaning blades 21 are inserted by skewer insertion, the central through holes 22 of the respective cleaning blades 21 are aligned with the positions of the screw holes 20 of the mounting member 15, and the mounting screws 23 are screwed into the screw holes 20 from the front end of the front body portion 17. Then, the cleaning blade 21 that has been skewered is fixed so as not to come out of the mounting member 15. As described above, the fixing of the cleaning blade 21 to the mounting member 15 is very simple, and when the cleaning blade 21 is replaced due to wear or the like in the cleaning work, the replacement work can be performed in a short time. Further, in spite of the simple fixing means, the fixing of the cleaning blade 21 by skewering can transmit the rotational force and the axial force applied to the mounting member 15 to the cleaning blade 21 without any trouble, so that the cleaning operation can be performed smoothly. You can proceed. In this embodiment, the number of cleaning blades 21 to be skewered is two, but the long holes 18 for skewering are used.
There is also a mode in which the cleaning blade 21 is further increased and a large number of cleaning blades 21 are used.

As described above, the spiral spring member 13 is interposed between the joining member 7 and the cleaning head 14. As will be described later, the cleaning blade 21 is used in a bent state during cleaning. At that time, the spiral spring member 13 is used.
Provides a space between the cleaning blade 21 and the flexible wire 1 to prevent the bent tip of the cleaning blade 21 from contacting the flexible wire 1 and damaging it.
The spiral spring member 13 also serves as a buffer member for the stress transmitted from the flexible wire 1 with respect to the change in the grinding resistance applied to the cleaning blade 21. In order to attach the in-pipe cleaning instrument according to the present invention to the flexible wire 1, the dovetail-shaped projections 5 of the connecting member 2 at the end of the flexible wire 1 are fitted into the dovetail-shaped groove 10 of the joining member 7 and joined. At the same time when the end face 9 is brought into close contact with the connecting member 2, a pair of connecting screws 12 having a pair of connecting screws 12 penetrating the pair of screw-fastening through holes 6 from the rear surface of the connecting member 2 are arranged at corresponding positions. It may be screwed into the screw hole 11 for tightening and tightened. By this tightening, the connecting member 2 and the in-pipe cleaning instrument are integrally joined. As described above, since the pipe cleaning tool is separably joined to the connecting member 2 fixed to the front end of the flexible wire 1 by the joint member 7, the entire pipe cleaning tool is replaced and the cleaning according to the present invention is performed. Other types of cleaning tools can be attached instead of the tools.

As shown in FIG. 6, the thus constructed cleaning tool according to the present invention is inserted from a pipe end opening of a pipe line 24 such as a water supply pipe line or a drainage pipe line to be cleaned. The flexible wire 1 can be inserted manually or mechanically.
Is performed by applying an axial propulsive force and a rotational force.
As shown in FIG. 5, the tip of the cleaning blade 21 of the cleaning instrument inserted in the duct 24 is elastically bent along the inner wall of the duct 24, and the tip of the cleaning blade 21 is It contacts the inner wall of 24 in a pressed state. Therefore, if an axial force and a rotational force are applied to the cleaning head 14, the cleaning blade 2
The tip side of 1 moves away in the axial direction while cleaning the inside of the pipe by scraping off the dust accumulated on the entire inner wall of the pipe in the circumferential direction of the pipe. The cleaning operation is usually performed while running water on the cleaning head 14. Further, since at least the outer surface of the cleaning blade 21 is made of synthetic resin, the noise generation should be minimal despite the fact that the tip of the cleaning blade 21 comes into contact with the inner wall of the pipe in a crimped state during cleaning. You can

The cleaning tool according to the present invention is applicable not only to a straight pipe, but also to a pipe joint forming a bent portion of a pipe 24 such as an elbow 25 or a T-shaped cheese 26. Exhibits excellent cleaning function. That is, even if the cleaning head 14 is caught in the pipe joint portion forming the pipe bent portion of the pipe line 24, only the cleaning blade 21 is in contact with the inner wall of the pipe in the cleaning head 14, and the pipe joint portion is in the pipe bent portion. The cleaning blade 21 having elastic flexibility in accordance with the increased grinding resistance easily elastically deforms its tip end inward to reduce the resistance for passage through the pipe. Since 14 can easily pass through the bent portion of the tube, the forward or backward movement of the cleaning head 14 at the bent portion of the tube does not stagnate. Since the cleaning blade 21 is flexible both forward and backward with respect to the mounting member 15, as shown in FIG. 6, the cleaning tool is advanced into the conduit 24 with its cleaning head 14 forward. Also when cleaning the inside of the pipe, as shown in FIG.
It can also be effectively used when cleaning the inside of the pipe by moving the cleaning head 14 backward and moving backward.

[0015]

The present invention has the following effects. A. By advancing or moving the cleaning instrument forward or backward while applying rotation to the inside of the pipe, the plurality of cleaning blades skewed and fixed to the attachment member elastically bends at the tip end along the pipe inner wall to the entire circumference of the pipe inner wall. Since the tip of the cleaning blade comes in contact with the inner wall of the pipe in a crimped state, it moves axially with rotation, so that the dust accumulated on the entire inner wall of the pipe is scraped off in the pipe circumferential direction to clean the pipe. You can do it. B. Even when the cleaning head is caught in the pipe joint that forms the pipe bend of the pipe, only the cleaning blade touches the inner wall of the pipe in the cleaning head, increasing the grinding in the pipe bend. Depending on the resistance, the elastically flexible cleaning blade will easily elastically deform with its tip inward and reduce the resistance for passage through the pipe,
Since the cleaning head can easily pass through the bent portion of the pipe, the forward or backward movement of the cleaning head at the bent portion of the pipe does not stagnate. C. Since at least the outer surface of the cleaning blade is formed of a synthetic resin, it is possible to reduce the generation of noise despite the fact that the tip of the cleaning blade comes into contact with the inner wall of the pipe in a crimped state during cleaning.

D. The cleaning blade is attached to the mounting member.
Since it is possible to elastically bend forward and backward, when cleaning the inside of the pipe by advancing the cleaning tool into the duct with the cleaning head as the front, the cleaning head also moves backward as the rear. It can also be effectively used for cleaning inside pipes. E. The cleaning blade has a simple strip shape, can be manufactured at low cost, and is fixed to the mounting member in a skewered state, so it is possible to replace the worn cleaning blade. It's easy. Since the cleaning blade is fixed to the mounting member in a skewered shape, it is possible to transmit a sufficient scraping stress to the cleaning blade from the mounting member despite the simple fixing means. F. Since the coiled spring member is interposed between the mounting member to which the cleaning blade is mounted and the joining member, the tip of the cleaning blade does not contact and damage the flexible wire, and the coiled spring member is the cleaning blade. It serves as a buffer member for the stress transmitted to the change in the grinding resistance applied to the. G. Since the cleaning device is joined to the connecting member fixed to the front end of the flexible wire by the joining member, the entire cleaning device can be replaced or another type of cleaning device can be attached instead of the cleaning device according to the present invention. It is easy to do.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a pipe cleaning tool according to the present invention.

FIG. 2 is an exploded perspective view showing a main part of the embodiment.

FIG. 3 is a vertical sectional view of the embodiment.

FIG. 4 is a partially cutaway exploded perspective view showing a joint portion between a flexible wire and a pipe cleaning tool.

FIG. 5 is an explanatory view showing a cleaning state of a pipe cleaning tool.

FIG. 6 is an explanatory diagram showing a cleaning situation of the in-pipe cleaning instrument when cleaning is performed by advancing.

FIG. 7 is an explanatory diagram showing a cleaning situation of the in-pipe cleaning instrument when cleaning is performed in reverse.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Flexible wire 2 Connecting member 7 Joining member 13 Winding spring member 14 Cleaning head 15 Mounting member 16 Rear body part 17 Front body part 18 Long hole for skewer 20 Screw hole 21 Cleaning blade 22 Central through hole 23 Mounting screw

Claims (5)

[Claims] 1. A joining member joined to a connecting member fixed to a front end of a flexible wire for transmitting a rotational force and an axial force in a non-rotatable manner, and a coiled spring member having one end fixed to the joining member. And a mounting member having a front body portion and a rear body portion integrally formed with the front body portion and fixed to the other end of the spiral spring member, and the front body portion has a strip shape and at least an outer surface thereof. Is a cleaning head in which a plurality of elastically flexible cleaning blades made of synthetic resin are circumferentially displaced so as to extend radially outward from the axis and are skewered and fixed in the radial direction. A pipe cleaning tool characterized by comprising: 2. The in-pipe cleaning instrument according to claim 1, wherein the cleaning blade is made of a synthetic resin having elastic flexibility. 3. The in-pipe cleaning instrument according to claim 1, wherein the cleaning blade has an elastically flexible metal body embedded inside an outer coating layer made of synthetic resin. 4. The front body portion of the mounting member is provided with long and narrow holes for piercing in the radial direction at intervals in front and back in order to pierce a plurality of cleaning blades. The in-pipe cleaning instrument according to any one of claims 1 to 3. 5. The cleaning blade is provided with a central through hole at the center thereof, and the mounting member is provided with a screw hole in the axial direction from the front side to skewer the skewered long hole. 5. The in-pipe cleaning instrument according to claim 4, wherein the cleaning blade is fixed by screwing a mounting screw into the screw hole that matches the central through hole of the cleaning blade.