JPH11631A - Swivel nozzle apparatus for washing pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a swivel nozzle apparatus for washing pipes of which a nozzle head is stably swiveled and which efficiently washes the insides of pipes with a small amount of water without damaging the inner walls of the pipes. SOLUTION: This swivel nozzle apparatus for washing pipes comprises an axial body 1 which can be connected with and fixed in the tip end part of a high pressure hose and a nozzle head 2 attached to the axial body 1 in a freely rotatable manner. The nozzle head 2 comprises a cylindrical body part and a pair of scraper parts 8a, 8b projected out of an outer circumferential wall of the cylindrical body part 7 and respective scraper parts 8a, 8b are positioned face to face each other while sandwiching the rotary axis of the cylindrical body part 7 and comprise first jetting holes 9a, 9b to generate the rotating force of the nozzle head 2. The nozzle head 2 is made of plastic with high impact resistance, especially preferably made of nylon. Moreover, it is preferable to form second jetting holes in the cylindrical body part to jet out high pressure water in the direction at right angles to the rotation axis of the cylindrical body part and also to form third jetting holes to jet out high pressure water in the direction not rectangular to but crossing the rotation axis of the cylindrical body part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nozzle head, which is introduced into a tubular body such as a drain pipe, and is repelled by high-pressure water injected from an injection hole provided in the nozzle head. In a swirling nozzle device for washing a pipe, which can wash the inner wall of a tubular body by rotating at a high speed along the pipe, the sound generated at the time of washing the pipe is small, and the washing can be performed with almost no damage to the inner wall of the pipe. The present invention relates to a device having an improved cleaning effect on the inner wall of a tubular body.

[0002]

2. Description of the Related Art A number of cleaning nozzle devices have been proposed for cleaning inner wall surfaces of various tubular bodies such as sewer pipes, domestic drain pipes, and plant pipes by jetting high-pressure water from nozzles. Recently, for example, Japanese Unexamined Utility Model Publication No. Hei 6-77874 and Japanese Unexamined Patent Publication No. Hei 6-328053 disclose that the inside of a pipe can be efficiently cleaned.
There is disclosed a nozzle device in which a nozzle head spirally slides along an inner wall surface of a tubular body and makes a revolving movement.

However, Japanese Utility Model Application Laid-Open No.
In the device of No. 2, since the nozzle head which makes a revolving motion has an eccentric structure (asymmetric structure), the rotation of the nozzle head itself becomes unstable and the dust removing effect by the scraper portion is not sufficient. There is. In addition, in the case of this nozzle device, high-pressure water is jetted outward on the straight line that intersects with the rotation axis of the nozzle head, so that a large motive force of a turning motion is exerted on the nozzle head. There was also a problem that it could not be given. Further, a device in which a spherical scraper portion is provided in a state biased to the head nozzle has been proposed, but in such a device, when the nozzle head comes into contact with the inner wall of the tube, the rotation stops. However, there is also a problem that a sufficient cleaning effect cannot be obtained.

On the other hand, JP-A-6-328053 discloses a nozzle having a symmetric structure in which a pair of protrusions are provided at positions opposed to each other with respect to the rotation axis of the nozzle, in addition to the nozzle having an asymmetric structure. In such a nozzle, good rotational stability can be obtained. However, such swirl nozzles that have been proposed so far are all made of metal, generally stainless steel. Therefore, when cleaning a metal drain pipe, a loud noise is generated at the time of cleaning, and the pipe is not sewn. The inner wall of the tube was subjected to a large impact force, and the pipe was sometimes damaged. In addition, even in the case of a nozzle made of aluminum having a low specific gravity, there is a problem that there is a risk of damaging the inner wall surface of the tube, particularly when the inside of the tube made of vinyl chloride is cleaned using a metal nozzle. In many cases, the pipe was often damaged by a large impact force of a metal nozzle.
The swirl nozzle known so far has a structure in which a connection member attached to a tip end of a high-pressure hose is screwed and connected to a rear end side of a shaft body that rotatably supports the nozzle. Because there is, the length of the part without flexibility becomes longer,
There is also a problem that it is difficult to pass a tube having a small inner diameter bent in an L shape.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem of the conventional cleaning nozzle device, and the sound generated when cleaning the inner wall of the pipe is small, and the inner wall of the pipe is damaged. To provide a swirling nozzle device for washing a tube having a structure capable of efficiently washing the inside of the tube with a small amount of water without breaking the pipe and also providing a stable large swirling motion to the nozzle head. As an issue.
The inventor of the present invention forms a pair of scraper portions at positions that are axially symmetric with respect to the rotation axis of the nozzle head, and forms a pair of high-pressure water injection holes in each of the scraper portions in a nozzle head that rotates inside the pipe while rotating. When the nozzle head is provided, a large propulsive force of a swiveling motion can be applied to the nozzle head, the balance when the nozzle head is rotated is good, the high-speed rotation of the nozzle head is stabilized, and the pair of scrapers are formed on the inner wall of the tubular body. By directly contacting and scraping off dirt and the like adhered to the surface, the cleaning efficiency of the inner wall surface of the tubular body can be remarkably improved, and furthermore, by making the material of the nozzle head a plastic having impact resistance, The present inventors have found that the sound generated at the time of washing the pipe is small and that the washing can be performed without damaging the inner wall of the pipe, and the present invention has been completed.

[0006]

That is, a swirl nozzle device for cleaning a pipe according to the present invention comprises a shaft which can be connected and fixed to a tip end of a high-pressure hose to which high-pressure water is supplied, and a rotating shaft with respect to the shaft. Nozzle head mounted so as to be capable of being mounted, wherein the head nozzle spirals along the tubular body while being pressed against the inner wall surface of the tubular body to be cleaned by jetting of high-pressure water supplied through the shaft body. A pipe cleaning swivel nozzle device that swivels by sliding on the nozzle head, wherein the nozzle head comprises a cylindrical body part and a pair of scraper parts protruding from an outer peripheral wall of the cylindrical body part; The scraper part
It is present at a position opposite to the rotation axis of the cylindrical body part, and each of the scraper parts is provided with the nozzle head by the force generated when high-pressure water supplied through the shaft body is jetted to the outside. It is characterized in that a first injection hole that can be rotated around the central axis of the body is provided, and that the material of the nozzle head is an impact-resistant plastic.

The present invention also provides the above-mentioned swirling nozzle device for cleaning a pipe, wherein the material of the nozzle head is nylon. Further, the present invention provides the above-described swirling nozzle device for cleaning a pipe, wherein a high pressure is applied to the cylinder body of the nozzle head at a position sandwiching the rotation axis of the cylinder body in a direction orthogonal to the rotation axis. A second injection hole for injecting water, and a third injection hole for injecting high-pressure water in a direction intersecting the rotation axis of the cylindrical body without intersecting at right angles.
An injection hole is also provided. Further, according to the present invention, in the above tube cleaning swirl nozzle device, a substantially cylindrical caulking portion having an outer diameter substantially equal to the inner diameter of the high-pressure hose is provided at a rear end side of the shaft body. In a state where the tip of the high-pressure hose is fitted to the swaged portion, the tip side portion of the high-pressure hose is fastened to the swaged portion by a substantially cylindrical swage fitting. It also does.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a swirling nozzle apparatus for cleaning a pipe according to the present invention; FIG. FIG. 1 is a view showing an external appearance of an example of a swirl nozzle device for pipe cleaning of the present invention.
FIG. 2 is an exploded view showing components constituting the swirling nozzle device shown in FIG. FIG. 3 is a longitudinal sectional view showing the internal structure of the nozzle head in the swirling nozzle device shown in FIG. 1, and FIG. 4 is a diagram showing the appearance of the nozzle head shown in FIGS. Yes, (a) to (c) are a plan view, a front view, and a side view, respectively. Further, FIG. 5 is a longitudinal sectional view showing the internal structure of a nozzle head having a shape different from that of the nozzle head shown in FIGS. 1 to 4, and FIG. 6 shows a nozzle guiding member having flexibility at the tip. It is a figure which shows one preferable example of the swirling nozzle apparatus for pipe | tube washing | cleaning of this invention attached.

FIGS. 7 (a) to 7 (c) show a second injection hole provided in each of the scraper portions, in addition to the first injection hole, for further injecting high-pressure water obliquely rearward. FIG. 3 is a view showing a nozzle head having a structure in which a pair of three injection holes are provided;
(A) is a left side view, (b) is a front view, (c) is (b)
3 is a sectional view taken along line AA in FIG. 8 (a) to 8 (c)
FIG. 8 is a diagram showing a nozzle head having a shorter scraper portion and a smaller rotation diameter than the nozzle head of FIG.
(A) is a left side view, (b) is a front view, (c) is (b)
3 is a sectional view taken along line AA in FIG. FIGS. 9A and 9B are diagrams showing an example of a shaft body in the swirling nozzle device for pipe cleaning of the present invention, wherein FIG. 9A is a front view and FIG. 9B is a right side view. FIG.
1 is a view showing an example of a shaft body in a swirling nozzle device for pipe washing of the present invention which is used by being attached to a tip of a high-pressure hose using a caulking device, (a) is a left side view, and (b) is a front view. , (C) is a right side view. FIG. 11 is a diagram showing a state where the shaft body of FIG. 10 is attached to the tip of a high-pressure hose using a caulking fitting.

As shown in FIG. 1, a swirling nozzle device for cleaning a pipe according to the present invention comprises a shaft 1 which can be connected and fixed to a distal end of a high-pressure hose 3 to which high-pressure water is supplied, and a center of the shaft 1. The shaft body 1 has a substantially cylindrical structure (see FIG. 2), and comprises a nozzle head 2 rotatably mounted about a shaft portion 4 as a center of rotation. As shown in FIG. 3, a female screw portion 5 which can be screwed into a male screw portion formed on the outer peripheral surface of a connecting member attached to the front end of the high-pressure hose 3 is formed on the inner wall surface on the rear end side of the high pressure hose 3. Have been. A high-pressure water discharge port 6 as shown in FIG. 2 is provided in the central shaft portion 4 of the shaft 1, and the high-pressure water supplied to the shaft 1 from the high-pressure hose 3 discharges the high-pressure water. It is supplied to the inside of the nozzle head 2 through the outlet 6.

On the other hand, the nozzle head 2 of the apparatus of the present invention comprises a substantially cylindrical cylindrical body 7 and a pair of scraper sections 8a, 8b protruding from the outer peripheral wall of the cylindrical body 7. A pair of scraper portions 8a, 8
b is located at a position facing the rotary shaft of the cylindrical body portion 7 (see FIGS. 1 to 4), and such a pair of scraper portions 8 is provided.
The nozzle heads a and 8b stabilize the high-speed rotation of the nozzle head, and the scraper portions 8a and 8b exhibit an effect of scraping dust and the like adhered to the inner wall surface of the pipe. In the present invention,
In terms of high-speed rotation stability and cleaning efficiency of the nozzle head,
As the scraper portions 8a and 8b, those having a substantially block-like shape are preferable. In particular, as shown in FIGS. 1 to 4, block-like protrusions having rounded corners are formed along the rotation axis direction. The ones formed are most preferred,
The shape of the scraper part is not limited to this,
For example, as shown in FIG. 5, a spherical body 11 may be provided at the tip of a high-pressure water guide tube 10 extending rearward from the outer peripheral wall of the cylindrical body portion 7 of the nozzle head 2, The nozzle head of FIG. 5 also exhibits excellent high-speed rotation stability and cleaning properties, similarly to the nozzle heads of FIGS. However, in the case of the nozzle head having the scraper portions 8a and 8b as shown in FIG. 5, the direction in which the high-pressure water guide tube 10 extends is limited to the rear side (that is, the direction opposite to the insertion direction of the nozzle device). Instead, it may be on the front side (the insertion direction of the nozzle device).

In the swirling nozzle device for cleaning a pipe according to the present invention, the scraper portions 8a and 8b of the nozzle head 2 are provided with:
First injection holes 9a and 9b for high-pressure water injection are provided, and the nozzle head is driven by a force generated when high-pressure water supplied through the shaft body 1 is injected from the first injection holes 9a and 9b to the outside. 2 rotates at high speed around the central shaft portion 4 of the shaft body 1 and high-pressure water is sprayed on the inner wall surface of the tubular body to be cleaned, thereby cleaning the inner wall surface of the pipe. According to the present invention, the first injection holes 9a and 9b are arranged as shown in FIG.
As shown in FIG. 2, the openings are formed so that high-pressure water is jetted in opposite directions, and are provided at positions separated from the rotation axis of the nozzle head 2 by a certain distance. The generated turning propulsion becomes large. In the nozzle head of FIG. 5, the first injection holes 9a and 9b are open rightward on the paper surface, but are actually open obliquely forward and obliquely rearward on the paper surface. 2 can be provided with a turning motion.

In the present invention, the cylindrical body 7 of the nozzle head 2 is provided.
As shown in FIG. 2, FIG. 3 and FIG.
Preferably, a plurality of grooves are provided along the circumferential direction, and such grooves can reduce the rotational resistance of the nozzle head. In this case, one of the grooves is the shaft 1
Is provided at a position corresponding to the high-pressure water discharge port 6 provided on the central shaft portion 4 (see FIG. 3), and high-pressure water is guided to the first injection holes 9a and 9b via this groove. The nozzle head 2 shown in FIGS. 1 to 4 is provided with one first injection hole in each of the scraper portions 8a and 8b, but in the present invention, two or more first injection holes are provided in each scraper portion. One injection hole may be provided, and the injection direction of the high-pressure water is not limited to that illustrated in FIG.

Further, in the nozzle device of the present invention, the nozzle head 2 that swivels along the inner wall of the pipe during cleaning is made of impact-resistant plastic,
In the case of such a nozzle head 2 in the present invention,
Lighter than metal nozzles, less impact on pipes,
There is an advantage that the pipe is not damaged, and the sound generated at the time of cleaning the pipe is small and can be used stably. In particular, in the present invention, even if the pipe to be cleaned is made of plastic, for example, vinyl chloride, the pipe is not damaged by the rotational impact force of the nozzle head. Plastics suitable for the nozzle head 2 in the present invention include, for example, nylon, high impact ABS, polycarbonate, polyacetal, and the like. Nylon is particularly preferable in terms of impact resistance, heat resistance, abrasion resistance, etc., and MC nylon Is most suitable.

The nozzle head 2 is preferably provided with a high-pressure water injection hole 12 for injecting high-pressure water obliquely rearward (see FIGS. 4B and 4C). 12, the cleaning effect by the high-pressure water can be further enhanced, and a force for promoting the forward movement of the nozzle device can be applied. When the nozzle head 2 having the above structure is rotatably attached to the shaft 1, as shown in an exploded view of FIG. 2, the nozzle head 2 is attached to the central shaft portion 4 of the shaft 1. Fitting, washer 13, spring washer 14
It is a common practice to place the screw and screw it with a fixing bolt 15.

The nozzle device of the present invention does not require a power source in addition to high-pressure water, and the swirling speed and the propulsion speed can be arbitrarily set by adjusting the direction and diameter of the injection hole, the amount of injected water, and the like. can do. In the present invention, FIG.
As shown in the figure, a nozzle guiding member 16 having flexibility may be attached to the distal end side of the shaft body 1. In this case, a fixing bolt 15 ′ having a connecting portion formed on the distal end side is provided.
In general, the nozzle head 2 is rotatably attached to the shaft body 1 by using the nozzle guide member 16 via such a fixing bolt 15 ′. Is not limited to the method illustrated in FIG. Also, the structure of the nozzle guiding member 16 is not limited to the one shown in FIG. 6, and is suitable for the nozzle device to move forward while rotating in a tubular body bent in an L-shape, U-shape or S-shape. What is necessary is just to have a structure. The nozzle device having the structure shown in FIG. 6 is particularly suitable for cleaning the inner wall surface of the bent tubular body, and the nozzle device can be easily inserted into the tubular body.

In the present invention, high-pressure water is injected at a position on the cylindrical body 7 of the nozzle head 2 across the rotation axis of the cylindrical body 7 in a direction perpendicular to the rotation axis. It is preferable that a second injection hole and a third injection hole for injecting high-pressure water in a direction intersecting the rotation axis of the cylindrical body portion 7 without intersecting at right angles are provided, as shown in FIGS. 7 and 8. In the nozzle head, each of the scraper portions 8a, 8b
In addition to the first injection holes 9a and 9b provided in the
The injection holes 9a ', 9b' and a pair of third injection holes 12a,
2b is provided. These second injection holes 9a ', 9b'
Is for injecting high-pressure water from a short distance in a direction perpendicular to the inner wall surface of the pipe to increase the washing efficiency, and does not apply a rotational force to the nozzle, but instead applies the first injection holes 9a, 9
It does not hinder the rotation of the nozzle caused by the high pressure water injection from b. The third injection holes 12a and 12b are for injecting high-pressure water obliquely forward or obliquely rearward to facilitate advancement or retreat of the nozzle. High-pressure water is injected in a direction that does not hinder the rotation of the nozzle caused by high-pressure water injection from 9a and 9b.

In the nozzle heads shown in FIGS. 7 and 8, the high-pressure water passages leading to the high-pressure water injection holes 9a, 9b, 9a ', 9b' are all formed in a straight line (the nozzle shown in FIG. 4). The head is formed in an L shape), FIG.
The nozzle head of FIG. 8 and the nozzle head of FIG. 8 have the same internal structure except for the length of the scraper portion. As the actual size of the nozzle head, assuming that the inner diameter of the pipe to be cleaned is N, the rotation outer diameter of the nozzle (distance between both ends of the scraper unit) = N × (1/2) × 1.0 to 1.2 is preferable, for example, when the inner diameter of the pipe to be washed is 5
In the case of 0 mm, for example, the nozzle head of FIG. 7 having a rotation outer diameter of 27.2 mm is suitable. When the inner diameter of the pipe to be washed is 40 mm, for example, the nozzle head of FIG. 22 mm is suitable.
However, in the present invention, the size of the nozzle head can be appropriately selected according to the inner diameter of the pipe to be cleaned. Also, regarding the size of the scraper part in the nozzle head,
Outer diameter of cylindrical body part 7: Rotation outer diameter of nozzle = 1: 1.2-
2.5 is preferred, and 1: 1.5 to 2.0 is particularly preferred. At this time, if the ratio of the rotation outer diameter of the nozzle to the outer diameter of the cylindrical body part 7 is less than 1.2, the effect of scraping dust and the like attached to the inner wall surface of the pipe becomes worse, and conversely, When the ratio exceeds 2.5, the nozzle head tends to be difficult to smoothly rotate.

FIGS. 9 and 10 show a preferred example of the structure of the shaft body 1 for mounting the nozzle head 2. The shaft body 1 of FIG. After having a substantially cylindrical caulking portion 17 having an outer diameter substantially equal to that of the high-pressure hose 3 fitted in the caulking portion as shown in FIG. The metal fitting 16 is attached and fixed to the tip of the high-pressure hose 3. According to the present invention, the swivel nozzle and the high-pressure hose cannot be removed by adopting the mounting structure shown in FIG. 11, but the distal end of the high-pressure hose 3 is directly connected to the swaged portion of the shaft body 1. In addition, it is not necessary to provide a member for connecting to the shaft body 1 at the tip of the high-pressure hose 3. Thereby, a threaded portion is provided on the rear end side of the shaft, and a connecting member having a threaded portion corresponding to the threaded portion is attached to the tip of the high-pressure hose, and such a shaft and the connecting member are screwed together. In the case of the nozzle device of the present invention having the connection structure shown in FIG. 11, the length of the entire swirling nozzle device (that is, the length of the portion having no flexibility in the device) is compared to the device having the connection structure shown in FIG. ) Can be reduced, and when the apparatus is cleaned, the bend when passing through the elbow (bend in an L shape) of the tube becomes smooth, and the device passes through a tube with a small inside diameter bent in an L shape. However, the advantage that the device can easily move back and forth can be obtained.

When a sewer pipe or a drain pipe is washed using the swirl nozzle apparatus for washing a pipe of the present invention, first, a nozzle having a large rotating outer diameter (a large scraper portion), for example, an outer portion of a cylindrical body portion is used. Diameter: The inner wall surface of the pipe is roughly cleaned by using a nozzle having a rotation outer diameter of about 1: 2.0, and then a nozzle having a small rotation outer diameter (a small scraper portion), for example, It is preferable to finish-clean the inner wall surface of the pipe by using a cylinder having an outer diameter of about 1.5: the outer diameter of the nozzle: the outer diameter of the nozzle is preferably about 1.5. By using a method in which nozzle heads are sequentially used for cleaning, compared with a method using the same nozzle head, the effect of scraping dust and the like adhered to the inner wall surface of the pipe is remarkably improved and very efficiently. , The inner wall of the pipe Can Kiyoshi.

[0021]

In the case of the swirl nozzle device for cleaning a pipe according to the present invention, since the material of the nozzle head is a plastic having an impact resistance, the noise generated at the time of cleaning the pipe is small. There is an excellent advantage that cleaning can be performed with little damage to the inner wall of the tube. Moreover, the nozzle head in the nozzle device of the present invention includes:
Since the pair of scrapers are formed at positions facing each other with the rotating shaft interposed therebetween, the rotation stability of the nozzle head is good, and the repulsive force of the high-pressure water injected from the injection holes provided in the nozzle head. The nozzle head rotates at high speed along the inner wall of the tubular body, and dust and the like attached to the inner wall surface of the tubular body are directly scraped by a pair of scraper portions,
An excellent cleaning effect can be obtained with a small amount of water, and the labor for cleaning the drainage pipe can be saved, the labor can be reduced, and the operation time can be shortened. Also, in the nozzle device of the present invention, a first injection hole for generating a high-speed rotation force and a high-speed swirling force, a second injection hole for enhancing a cleaning effect, and a third injection for facilitating the forward and backward movement of the nozzle device. In the case of using a nozzle provided with holes, a more excellent cleaning effect can be obtained than in the case of using a conventional nozzle device. Note that the nozzle device of the present invention can be applied to tubular bodies of various thicknesses, and since the nozzle device moves forward or backward while turning in the tubular body, the tubular body bent into an L-shape can be used. It is easy to clean the inner wall surface. Particularly, in the case of the structure in which the tip of the high-pressure hose is directly attached to the caulked portion on the rear end side of the shaft without passing through the connecting member, the hose is bent in an L-shape. Suitable for cleaning small-diameter tubes.

[Brief description of the drawings]

FIG. 1 is a view showing an external appearance of an example of a swirling nozzle device for cleaning a pipe according to the present invention.

FIG. 2 is an exploded view showing components constituting the swirling nozzle device shown in FIG.

FIG. 3 is a longitudinal sectional view showing an internal structure of a nozzle head in the swirling nozzle device shown in FIG.

FIGS. 4A to 4C are views showing the appearance of the nozzle head shown in FIGS. 1 to 3, wherein FIGS.
It is a front view and a side view.

FIG. 5 is a longitudinal sectional view showing an internal structure of a nozzle head having a different shape from the nozzle head shown in FIGS.

FIG. 6 is a view showing a preferred example of the pipe cleaning swirl nozzle device of the present invention in which a nozzle guiding member having flexibility is attached to the tip.

FIGS. 7A to 7C show a nozzle head having a structure in which a pair of second injection holes and a pair of third injection holes are provided in addition to the first injection holes provided in each scraper portion. FIG.
(A) is a left side view, (b) is a front view, (c) is (b)
3 is a sectional view taken along line AA in FIG.

8 (a) to 8 (c) are views showing a nozzle head having a shorter scraper portion and a smaller rotation diameter than the nozzle head of FIG. 7, and FIG. 8 (a) is a left side view, and FIG. () Is a front view, and (c) is a sectional view taken along line AA in (b).

9A and 9B are diagrams illustrating an example of a shaft body in the swirl nozzle device for cleaning a pipe according to the present invention, wherein FIG. 9A is a front view and FIG. 9B is a right side view.

FIG. 10 is a diagram showing an example of a shaft body in the swirl nozzle device for pipe washing of the present invention which is used by being attached to the tip of a high-pressure hose using a caulking device, (a) is a left side view,
(B) is a front view, (c) is a right side view.

11 is a view showing a state where the shaft body of FIG. 10 is attached to the tip of a high-pressure hose using a caulking metal fitting.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shaft body 2 Nozzle head 3 High pressure hose 4 Central shaft part 5 Female screw part 6 High pressure water discharge port 7 Cylindrical body part 8a, 8b Scraper part 9a, 9b First injection hole 9a ', 9b' Second injection hole 10 High pressure water Guide tube 11 Spherical body 12 High-pressure water injection hole 12a, 12b Third injection hole 13 Washer 14 Spring washer 15 Fixing bolt 16 Caulking fixture 17 Caulking part

Claims (4)

[Claims] 1. A high-pressure hose to which high-pressure water is supplied, comprising a shaft that can be connected and fixed to a tip end thereof, and a nozzle head that is rotatably attached to the shaft, wherein the head nozzle is A pipe cleaning swivel nozzle device that spirally slides and swirls along the tubular body while being pressed against the inner wall surface of the tubular body to be cleaned by injection of high-pressure water supplied through the shaft body, Wherein the nozzle head includes a cylindrical body portion and a pair of scraper portions protruding from an outer peripheral wall of the cylindrical body portion, and the pair of scraper portions are opposed to each other across a rotation axis of the cylindrical body portion. Exist in
Each of the scraper units has a first structure capable of rotating the nozzle head around a central axis of the shaft body by a force generated when high-pressure water supplied through the shaft body is injected to the outside.
A swirling nozzle device for pipe washing, wherein an injection hole is provided, and a material of the nozzle head is a plastic having impact resistance. 2. The swirling nozzle device for pipe cleaning according to claim 1, wherein the material of said nozzle head is nylon. 3. A cylindrical body of the nozzle head,
A second injection hole for injecting high-pressure water toward a direction orthogonal to the rotation axis at a position sandwiching the rotation axis of the cylindrical body portion, and a direction intersecting the rotation axis of the cylindrical body portion without being orthogonal to the second injection hole. The swirling nozzle device for pipe cleaning according to claim 1 or 2, further comprising a third injection hole for injecting high-pressure water toward the nozzle. 4. A substantially cylindrical caulking portion having an outer diameter substantially equal to the inner diameter of the high-pressure hose is provided at a rear end side of the shaft body, and the high-pressure hose is provided at the caulking portion. Wherein the distal end portion of the high-pressure hose is fastened to the caulking portion by a substantially cylindrical caulking fitting in a state where the front end portion is fitted.
The swirling nozzle device for cleaning a pipe according to any one of the above items.