JPH05329454A - Piping washing device - Google Patents

Abstract

PURPOSE:To simplify structure and to sufficiently guide a nozzle along the inner circumferential wall even if the inside diameter of piping is small by constituting the device of a nozzle support body at the inserting end of a washing hose, a nozzle and a nozzle guide member which is freely rotatable and has the shape of a sphere of larger diameter than the outer diameter of the nozzle support body. CONSTITUTION:When high pressure washing water is supplied to a washing hose 2, first, the washing water is injected from the 2nd ejector hole 5 and a piping washing device X advances to the interior of a pipe 1 while dragging the washing hose 2. Next, the washing water passes through a narrow passage of the nozzle support body 3 and injected from the 1st ejector hole 10 of a nozzle 8. When the washing water is injected from the 1st ejector hole 10, the nozzle guide member 14 is pushed against the inner circumferential wall 1a of the pipe 1 by injection repulsion force of the nozzle 8. Then, since the direction of the injection repulsion force of the ejector hole 10 of the nozzle 8 is more or less shifted from the center of the nozzle guide member 14, the nozzle 8 is guided to the nozzle guide member 14 while turning to move along the inner circumferential wall 1a of the pipe 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe cleaning apparatus used for cleaning a sewer drain pipe or a building drain pipe. It should be noted that the present invention can also be used to paint the inner peripheral wall of the pipe structurally.

[0002]

2. Description of the Related Art Conventionally, as an example of a pipe cleaning apparatus of this type, Japanese Patent Application No. 2-33967 previously proposed by the present invention.
There is an invention described in the specification of No. 6.

The invention, therefore, basically comprises a nozzle support which is fixedly attached to the insertion end of a cleaning hose which is inserted into the pipe, and which is supported on this nozzle support and is directed towards the inner wall of the pipe. A nozzle having an injection hole, an elongated nozzle guide member whose one end is fixedly attached to this nozzle, and a spherical slide which is attached to the free end of this nozzle guide member and slides on the inner peripheral wall of the pipe. It consists of members.

However, in the above construction, the guide member for guiding the nozzle along the inner peripheral wall of the tube is attached to the hose-shaped elongated member projecting outward from the nozzle and the tip of this elongated member. Since it consists of a spherical sliding member, it is structurally not simple, and as the inner diameter of the pipe becomes smaller, the nozzle cannot be sufficiently guided along the inner peripheral wall of the pipe. there were.

[0005]

In view of the above-mentioned conventional drawbacks, an object of the present invention is to simplify the structure, and even if the inner diameter of the pipe is smaller, the nozzle is provided on the inner peripheral wall of the pipe. The purpose is to obtain a pipe cleaning device that can sufficiently guide along.

[0006]

In order to achieve the above object, a pipe cleaning apparatus of the present invention comprises a nozzle support fixedly attached to an insertion end of a cleaning hose inserted into a pipe,
A nozzle supported by the nozzle support and having an injection hole directed to the inner wall of the pipe; and a nozzle rotatably provided in front of the nozzle via a support rod and a bearing, and having an outer diameter of the nozzle support. And a large-sized spherical nozzle guide member.

In the above structure, the spherical nozzle guide member may be rotatably provided on the peripheral body portion or the neck portion of the nozzle via a bearing.

Further, the pipe cleaning apparatus of the present invention has a cylindrical conduit which is directly or indirectly attached to the insertion end of the cleaning hose to be inserted into the pipe and has a flow path, and the cylindrical conduit which is internally mounted. A nozzle rotatably provided directly or indirectly at the insertion end of the cleaning hose via a first bearing and having an injection hole directed to the inner wall of the pipe, and a support rod and a first nozzle in front of the nozzle. And a spherical nozzle guide member which is rotatably provided via two bearings and is formed larger than the outer diameter of the nozzle.

Also in the above structure, the spherical nozzle guide member may be rotatably provided on the peripheral body portion of the nozzle via the second bearing.

[0010]

When high-pressure cleaning water is supplied to the cleaning hose, the cleaning water is first sprayed from the second spray hole of the nozzle support.

As a result, the pipe cleaning device advances toward the inner part of the pipe while pulling the cleaning hose.

Next, the washing water passes through the narrow passage of the nozzle support and is jetted from the first jet hole of the nozzle.

When the cleaning water is sprayed from the first spray hole, the nozzle guide member is pressed against the inner wall of the pipe by the spray reaction force of the nozzle.

Then, the direction of the injection reaction force of the injection hole of the nozzle deviates from the center point of the nozzle guide member to some extent, so that the nozzle is rotated and guided by the nozzle guide member along the inner peripheral wall of the pipe. To move.

[0015]

The present invention will be described in detail below with reference to the embodiments shown in the drawings.

In the first embodiment shown in FIGS. 1 to 7, X is a pipe cleaning device. Reference numeral 1 is a pipe such as a drain pipe. Reference numeral 2 is a washing hose such as a high-pressure hose which has one end connected to a pump (not shown) provided outside the pipe 1 and has the other end inserted into the pipe 1.

Reference numeral 3 is a nozzle support body in which the open end of the tubular portion 3a on one end side is fixedly and tightly fitted to the insertion end portion 2a of the cleaning hose 2. The nozzle support 3 is made of metal or a hard synthetic resin material. The cleaning hose 2 is provided with an inner cylinder fixing tool 4 which is installed in a portion from the one end opening of the nozzle support 3.
Thus, the one end of the nozzle support 3 is securely connected to the tubular portion 3a.

Reference numeral 5 is a second injection hole mainly formed in the tubular portion 3a of the nozzle support 3 in an oblique direction and mainly for self-propelling of the pipe cleaning device X. The second injection holes 5 are directed toward the cleaning hose 2 side, and in this embodiment, two second injection holes 5 are formed in each of the upper and lower sides, as shown in FIG.

Reference numeral 3b is a cylindrical portion on the other end side of the nozzle support body 3,
A male screw 6 is formed on the outer peripheral wall of the other end tubular portion 3b, and a large diameter portion is formed on the open end of the inner peripheral wall.

Reference numeral 3c is a partition wall which is formed at the central portion of the nozzle support 3 or a portion from the central portion and which has a narrow fluid passage 7 in the central portion.

Reference numeral 8 denotes a nozzle attached to the opening of the other end side cylindrical portion 3b of the nozzle support 3, and in this embodiment, this nozzle 8 is a large portion of the other end side cylindrical portion 3b of the nozzle support 3. First mini-bearings 9 respectively installed between the diameter portion and an annular recess formed in the outer peripheral wall of the neck portion 8a of the nozzle in the circumferential direction.
It is rotatably supported by the nozzle support 3 via.

Reference numeral 10 is one first injection hole formed in the head portion 8b of the nozzle 8 and directed toward the inner wall 1a of the pipe 1. As shown in FIG. 4, the first injection hole 10 has a neck portion 8b.
Is formed in a direction orthogonal to the nozzle introduction hole 11. A plurality of first injection holes 10 may be provided. In this case, the plurality of first injection holes give unbalanced thrust to the nozzle 8 or self-propelled force to the pipe cleaning device X, so that the design position of each injection hole, the direction, the difference in diameter, etc. are appropriately changed. be able to.

Reference numeral 12 denotes a cylindrical support cap for preventing the nozzle 8 from coming off from the nozzle support 3 via the mini-bearing 9, and the nozzle 8 is provided on the outer wall of the support cap 12.
Is formed with a through hole through which the neck portion 8a of the
A female screw 13 is formed on the inner peripheral wall of the nozzle support 3 so as to be screwed with the male screw 6 of the nozzle support 3.

A spherical member 14 is rotatably provided in front of the head portion 8b of the nozzle 8 via a support rod 15 and a second mini-bearing 16 and is formed larger than the outer diameter dimension of the nozzle support 3. Nozzle guide member. As shown in FIG. 6, the nozzle guide member 14 is attached to the nozzle 8 such that the center point 0 of the nozzle guide member 14 and the center point 0'of the nozzle 8 are slightly displaced from the center axis. Therefore, the direction A of the ejection reaction force of the nozzle 8 and the radial direction B with the center point 0 of the nozzle guide member 14 as the base point do not completely match.

In the above structure, when high-pressure cleaning water is supplied to the cleaning hose 2, first, the cleaning water is supplied to the nozzle bearing member 3.
It is injected from the second injection hole 5 of. As a result, the pipe cleaning device X advances toward the inner part of the pipe 1 while pulling the cleaning hose 2. Next, the washing water passes through the narrow passage 7 of the nozzleless support 3 and is sprayed from the first spray hole 10 of the nozzle 8. Then, when the cleaning water is sprayed from the first spray hole 10, the nozzle guide member 14 is pressed against the inner wall 1a of the pipe 1 by the spray reaction force of the nozzle as shown in FIG. Then, since the direction of the ejection reaction force of the nozzle 8 is slightly displaced from the center point of the nozzle guide member 14, the nozzle 8 rotates and the nozzle guide member 14 causes the pipe 1 to move.
7 is guided in the direction of the arrow in FIG. Then, the inner peripheral wall 1a of the pipe 1 is cleaned with cleaning water sprayed from the first spray holes 10 of the nozzle.

Next, different embodiments of the present invention shown in FIGS. 8 to 10 will be described. In the description of these embodiments, the same parts as those in the embodiment of the present invention will be designated by the same reference numerals, and overlapping description will be omitted.

In the embodiment of FIG. 8, the main difference from the embodiment of the present invention is the nozzle 8A and the nozzle guide member 14A attached to this nozzle. That is, in the nozzle 8A, the neck portion 8a is formed long, while the head portion 8b is formed small. The spherical nozzle guide member 14A is rotatably provided on the peripheral body portion or the neck portion 8a of the nozzle via the second mini-bearing 16A, and is formed larger than the outer diameter dimension of the nozzle support body 3A. .. Even with this structure, the same operation and effect as those of the embodiment of the present invention can be obtained.

In the embodiment of FIG. 9, the main difference from the embodiment of the present invention is that the nozzle 8B is directly or indirectly attached to the cleaning hose 2B without using a nozzle support. In the case of this embodiment, the first mini-bearing 9B
Is installed in the nozzle 8B. Thus, the pipe cleaning device Y basically has a cylindrical conduit 21 directly or indirectly attached to the insertion end of the cleaning hose 2B inserted into the pipe 1B and having a flow path 20, and this pipe. Injection hole 10B that is rotatably provided directly or indirectly through the first mini-bearing 9B at the insertion end of the cleaning hose 2B so as to house a cylindrical conduit, and is directed to the inner wall of the pipe 1B. And a spherical nozzle guide member 14B that is rotatably provided in front of this nozzle via a support rod 15B and a second mini-bearing 16B, and that is formed larger than the outer diameter dimension of the nozzle 8B. It consists of and. Reference numeral 22 is a pipe-shaped inner cylindrical tube having one end fitted into the insertion end of the cleaning hose 2B and the other end having a male screw for screwing with the female screw of the cylindrical conduit 21. Reference numeral 23 is an attached outer cylindrical tube, one end of which is fitted to the outer periphery of the insertion end of the cleaning hose 2B and the other end of which limits the movement of the first mini-bearing 9B. Further, 5B is a second injection hole. Even with this structure, the same operation and effect as those of the embodiment of the present invention can be obtained.

In the embodiment of FIG. 10, the main difference from the embodiment of the present invention is that the nozzle 8C is directly or indirectly attached to the cleaning hose 2C without using a nozzle support. In the case of this embodiment, the first mini-bearing 9
C is installed in the nozzle 8C. Further, the mounting position of the nozzle guide member 14C with respect to the nozzle 8C is different. Thus, this pipe cleaning device is basically a cylindrical conduit 21C having a flow passage 20C directly or indirectly attached to the insertion end of the cleaning hose 2C inserted into the pipe 1C.
And the cleaning hose 2C so that this tubular conduit is installed.
Directly or indirectly at the insertion end of the first bearing 9
A nozzle 8C rotatably provided via C and having a first injection hole 10C directed to the inner wall of the pipe 1C; and a peripheral body portion of this nozzle rotatably provided via a second bearing 16C, and , A spherical nozzle guide member 14C formed larger than the outer diameter of the nozzle 8C. Note that 22C is a pipe-shaped mounting inner cylindrical tube having one end fitted in the insertion end of the cleaning hose 2C, and the other end having an external thread for screwing with the internal thread of the cylindrical conduit 21C. Reference numeral 23C is an attached outer cylindrical tube, one end of which is fitted to the outer periphery of the insertion end of the cleaning hose 2C, while the end surface of the other end restricts the movement of the first mini-bearing 9C. Further, 5C is a second injection hole. Even with this structure, the same operation and effect as those of the embodiment of the present invention can be obtained.

[0030]

As is apparent from the above description, in the present invention, since the spherical nozzle guide member is directly attached to the front portion of the nozzle or the peripheral body portion, the structure is simple and the inner diameter of the pipe is small. The nozzle can be sufficiently guided along the inner peripheral wall of the tube even when is smaller.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a first embodiment of the present invention.

FIG. 2 is a schematic cross-sectional explanatory view of a main part of the first embodiment of the present invention.

3 is a sectional view taken along line 3-3 of FIG. 2 of the present invention.

4 is a sectional view taken along line 4-4 of FIG. 2 of the present invention.

FIG. 5 is a schematic explanatory view showing an operating state of the first embodiment of the present invention.

FIG. 6 is an explanatory view showing the relationship between the nozzle and the nozzle guide member according to the first embodiment of the present invention.

FIG. 7 is an explanatory diagram showing a moving state of the nozzle guide member according to the first embodiment of the present invention.

FIG. 8 is a schematic cross-sectional explanatory view of the essential parts of the second embodiment of the present invention.

FIG. 9 is a schematic cross-sectional explanatory view of the essential parts of the third embodiment of the present invention.

FIG. 10 is a schematic cross-sectional explanatory view of the essential parts of the fourth embodiment of the present invention.

[Explanation of symbols]

1, 1B, 1C ... Pipe, 2, 2B, 2C ... Washing hose, 3, 3A ... Nozzle support, 5, 5B, 5C ... Second injection hole, 8, 8A, 8B, 8C ... Nozzle, 9, 9B, 9C ... 1st mini-bearing, 10, 10B, 10C ... 1st injection hole, 14, 14A, 14B, 14C ... Nozzle guide member, 15 and 15B ... Support rod, 16, 16A, 16B, 16C ... 2nd mini Bearings, 21, 21C ... Cylindrical conduit.

Claims (4)

[Claims] 1. A nozzle support fixedly attached to the insertion end of a cleaning hose to be inserted into a pipe, a nozzle supported on the nozzle support and having an injection hole directed toward the inner wall of the pipe, A pipe cleaning device comprising a spherical nozzle guide member that is rotatably provided in front of a nozzle through a support rod and a bearing and that is formed larger than the outer diameter dimension of the nozzle support. 2. A nozzle support fixedly attached to the insertion end of a cleaning hose to be inserted into a pipe, a nozzle supported on the nozzle support and having an injection hole directed to the inner wall of the pipe, A pipe cleaning device comprising a spherical nozzle guide member which is rotatably provided on a peripheral body portion or a neck portion of a nozzle via a bearing and is formed larger than an outer diameter dimension of the nozzle support body. 3. A tubular conduit which is directly or indirectly attached to an insertion end of a cleaning hose to be inserted into a pipe and has a flow path, and an insertion end of the cleaning hose so as to house the tubular conduit. Directly or indirectly through a first bearing rotatably, and a nozzle having an injection hole directed to the inner wall of the pipe, and a nozzle in front of the nozzle that rotates via a support rod and a second bearing. A pipe cleaning device comprising a spherical nozzle guide member which is freely provided and is formed larger than the outer diameter of the nozzle. 4. A tubular conduit which is directly or indirectly attached to an insertion end of a cleaning hose to be inserted into a pipe and has a flow path, and an insertion end of the cleaning hose so as to house the tubular conduit. Directly or indirectly rotatably provided via a first bearing, and having a nozzle having an injection hole directed to the inner wall of the pipe, and rotatably provided on a peripheral body portion of the nozzle via a second bearing. And a spherical nozzle guide member formed larger than the outer diameter of the nozzle.