JPH11221537A - Pipeline washing nozzle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To advance a pipeline washing nozzle deep into a pipeline and further, while advancing, to enable easily removing material to be washed which is an obstacle to the advancement. SOLUTION: A piping washing nozzle 1 fixed to the inserting head part of a washing hose 2 is made to move deep into a pipeline 20 by jetting force from a first jetting hole 12 for the self-traveling movement. In a shell part 8 of the pipeline washing nozzle 1, an opening housing part 10 into which high pressure washing water W flows and a pair of guiding through-holes 13, 13 communicating with each other are formed. A reciprocating valve member 15 is inserted through the guiding through-holes 13, 13 of the shell part 8. The reciprocating valve member 15 is provided with a valve part 18 normally positioned in the opening housing part 10 and enabling alternately closing the guiding through-holes 13, 13 and a set of loosely fit valve stems 16 connected to the valve part 18 and also enabling alternately hitting against an inner surface 20a of the pipeline 20, projected from the guiding through-holes 13, 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is, for example, used for cleaning a sewer pipe (hereinafter, referred to as "pipe"), and is fixed to an insertion end of a cleaning hose constituting a part of a pipe cleaning apparatus. The present invention relates to a pipe cleaning nozzle.

[0002]

2. Description of the Related Art An example of a pipe cleaning apparatus has been proposed by the present inventors (the applicant of the present invention).
-63690. The embodiment described in this publication removes (cleans) the attached matter while turning along the inner peripheral wall of the pipe while traveling on its own. Another example proposed by a person other than the present inventors is described in Japanese Patent Application Laid-Open No. 62-163789. In the embodiment described in this publication, a ring-shaped rotating body rotatably provided on an elastic body (snake wire) is swiveled along the inner peripheral surface of the pipe while removing the adhered substance while traveling on its own. .

The former and the latter embodiments are excellent in that the object to be cleaned adhered and remained on the inner peripheral wall of the pipe can be removed. Or the object to be cleaned remains deep (front) in the pipe in such a state that the cleaning function of the nozzle cannot be sufficiently exerted (for example, if the adhered substance is present as a large lump). ), There is a problem that the self-travel of the nozzle becomes difficult. In addition, the configuration is complicated and the handling is troublesome.

[0004]

SUMMARY OF THE INVENTION In view of the above-mentioned conventional problems, the first object of the present invention is to provide a pipe cleaning nozzle having a large pipe inner diameter, or a pipe to be cleaned deep inside the pipe. If the nozzle remains in such a state that the cleaning function of the nozzle cannot be sufficiently exerted, the pipe cleaning nozzle moves deeper into the pipe, It is easy to remove things. The second purpose is that the configuration is simple,
And it is easy to handle. A third purpose is to be easy to combine or disassemble.

[0005]

The pipe cleaning nozzle of the present invention is fixed to the insertion end of the cleaning hose 2 and travels to the back of the pipe 20 by jetting force from the first jetting hole 12 for self-traveling. A pair of guide through holes 13, 13 communicating with an opening storage section 10 into which high-pressure cleaning water W flows are formed in a body 8 of the pipe washing nozzle 1. 8, the guide through holes 13, 13
A reciprocating valve member 15 is inserted through the valve member 1. The reciprocating valve member 15 is always located in the opening storage portion 10 and can close the guide through holes 13, 13 alternately.
8 and a set of loose fitting valve rods 16, 16 connected to the valve portion and alternately striking the inner wall surface 20 a of the pipe 20 in a state of protruding from the guide through hole.
When the high-pressure washing water W is injected from one of the guide through holes 13, the pipe washing nozzle 1 swings from one inner wall surface 20a to the other inner wall surface. Reference numeral 15 indicates that the projecting tip end of one loose fitting valve stem 16 strikes the other inner wall surface to open the guide through hole 13 on the striking side, while one inner wall surface 20a is provided via the valve portion 18.
Of the pipe washing nozzle 1 which has first swung in one direction as described above, then the jetting force jetted from the guide through hole 13 on the hitting side causes the pipe washing nozzle 1 to move from the other inner wall surface to one inner wall surface. The reciprocating valve member 15 is now in contact with one of the inner wall surfaces facing the protruding tip end of the other one of the loose fitting valve rods 16 to open one guide through hole 13, Guide through hole 1 on the other inner wall surface 20a side via valve portion 18
3 is repeated.

Further, the pipe cleaning nozzle of the present invention is fixed to the insertion end of the cleaning hose 2 and has a first injection hole 1 for self-traveling.
A second nozzle capable of communicating with the opening housing part 10D into which the high-pressure cleaning water W flows into the head 7D of the pipe cleaning nozzle 1D, which is a pipe cleaning nozzle 1D that travels to the back of the pipe 20D by the injection force from 2D. Fitted valve stem portion 60 in which hole 62 is formed
A reciprocating valve member 15D having a through hole is provided. The reciprocating valve member 15D includes an internal stopper 65 always located in the opening storage portion 10D, and an internal stopper 65.
And a fitting valve rod portion 60 which is connected to the outside through a central hole 50 formed in the head and has an external stopper 61 at a protruding tip portion. The pipe washing nozzle 1D is provided with the external stopper 61 or the fitting. When the projecting tip of the joint valve rod portion 60 collides with the object to be cleaned 21D, the reciprocating valve member 15D slides back toward the hose joint 3D due to the collision force and injects high-pressure cleaning water to the object to be cleaned 21D. On the other hand, when the object to be cleaned 21D as an obstacle disappears, it is pushed back in the forward direction by the pressure of the high-pressure washing water flowing into the center through hole 68 of the hose joint 3D, and the fitting valve rod 6
The second inflow path 62a of the second injection hole 0 is hidden in the head 7D and ends.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to a first embodiment shown in FIGS. Reference numeral 1 denotes a pipe cleaning nozzle inserted into the pipe via a cleaning hose 2. Although not shown, the base end of the washing hose 2 is attached to a dedicated washing car equipped with a control device, a driving means for feeding high-pressure water, and the like. Reference numeral 3 denotes a long tube-shaped hose joint which is inserted into the distal end of the cleaning hose 2 on the insertion side and guides high-pressure cleaning water fed from the cleaning vehicle side to the pipe cleaning nozzle 1. The hose joint 3 has a small-diameter insertion portion 4 inserted into the distal end portion of the cleaning hose 2, a large-diameter screw connected to the small-diameter insertion portion 4, protruding from the distal end surface of the cleaning hose 2, and having a male screw on an outer peripheral wall. And a joint 5. Reference numeral 6 denotes a cylindrical caulking fixture fitted to the outer peripheral wall at the tip of the cleaning hose 2. The hose joint 3 is fixed to the tip of the cleaning hose 2 by the caulking fixture 6.

[0008] The pipe washing nozzle 1 is screwed to a large-diameter threaded portion 5 of the hose joint 3. Therefore, a specific configuration of the pipe cleaning nozzle 1 of the present invention will be described. Although the external shape of the pipe cleaning nozzle 1 is not particularly limited, it should desirably be formed in the shape of a bullet (round or long) of an gun. In this embodiment, the external shape is a long bullet shape.

Therefore, if each section of the long bullet-shaped pipe cleaning nozzle 1 is divided first, it can be roughly divided into three. That is, reference numeral 7 denotes a head whose outer wall has a semicircular cross section. Reference numeral 8 denotes a body connected to the head 7 in the same diameter. Reference numeral 9 denotes a leg connected to the body 8 in a stepped manner. Thus, in the long bullet-shaped pipe cleaning nozzle 1, an opening accommodating portion 10 of a cylindrical inclusion is formed from the leg portion 9 side toward the head portion 7. The cross section of the opening storage section 10 is rectangular as shown in FIG. On the inner peripheral wall of the leg portion 9, a female screw 11 screwed to the large-diameter screw portion 5 of the hose joint 3 is formed. A plurality of first injection holes 12 having an inner end opening communicating with the opening housing portion 10 are formed in a diagonal direction at a step portion between the body portion 8 and the leg portion 9 so that the pipe cleaning nozzle 1 itself travels by itself. Have been. Since the outer end ports of the first injection holes 12 are directed obliquely to the inner wall surface of the pipe, not only the propulsion force but also the cleaning function is consequently exerted. Further, a pair of perfectly circular guide through holes 13, 13 vertically and linearly facing each other are formed in the body portion 8 with reference to FIG. In the first embodiment, the guide through-holes 13 not only guide the reciprocating valve member described below, but also the objects to be cleaned remaining in the pipe (for example, by being attached to the inner peripheral wall of the pipe). It also has a function of a second injection hole for cleaning the attached matter).

Reference numeral 15 denotes a reciprocating valve member slidably provided on the body 8 of the pipe washing nozzle 1 through the pair of guide through holes 13. In this reciprocating valve member 15, it is possible to form a flow path or a vertical groove for injecting high-pressure washing water. However, in the first embodiment, the reciprocating valve member itself does not form an injection path. A pair of guide through holes 1 described above
The injection paths 3 and 13 are used.

Therefore, the configuration of the reciprocating valve member 15 will be described. 16 and 16 have male screws 17 and 17 as an example of a mounting portion at an inner end inserted into the opening storage portion 10, while an outer end protruding outward from the guide through hole 13 is a pipe cleaning. A set of loose fitting valve rods that alternately strike the inner wall surface of the pipe following the reciprocating movement of the nozzle 1. Reference numeral 18 denotes one of the pair of guide through holes 13, 13 which is screwed with the male screws 17, 17 of the loose fitting valve stems 16, 16 respectively, and corresponds to the reciprocating loose fitting valve stems. A cylindrical valve part that opens and closes one side. The outer peripheral wall of the cylindrical valve portion 18 is opposed to the loosely fitted valve rods 16, 16 which are connected linearly.
It is formed in a swollen shape (for example, a capsule-like appearance)
When it comes into contact with the valve seat formed by the guide through hole 13 as shown in FIG. 3, the guide through hole 13 is closed just in a fit state.

In the above configuration, first, one worker puts the pipe cleaning nozzle 1 into the pipe so that the reciprocating member 15 is desirably positioned vertically. In this case, the cleaning hose 2 is appropriately held in hand, and the pipe cleaning nozzle 1 is pushed into the pipe. At this time, since the loose fitting valve stem 16 located below the reciprocating member 15 hits the lower surface of the inner peripheral wall of the pipe, the loose fitting valve stem 16 located above projects from the upper guide through hole 13. Therefore, the reciprocating member 1
The bulging valve portion 5 moves upward and opens the lower guide through hole 13.

Next, another worker turns on the switch of the control device of the washing car. Then, the high-pressure cleaning water guided by the cleaning hose 2 first flows through the hose joint 3 and then flows into the opening storage section 10 of the pipe cleaning nozzle 1. Therefore, the high-pressure washing water flowing into the opening accommodating portion 10 is a pressure medium, and thus tends to flow out of the opening of the pipe washing nozzle 1.

Thus, as shown in FIG.
Is jetted from the first injection hole 12, the pipe washing nozzle 1 starts to travel by itself while pulling the washing hose 2. On the other hand, the high-pressure cleaning water W is also synchronously injected from the lower guide through hole 13 corresponding to the second injection hole (flow path) toward the lower surface of the inner peripheral wall 20a of the pipe 20. As a result, the pipe cleaning nozzle 1
Vigorously begins to float from the position of the virtual line to the position indicated by the solid line (for example, from below to above).

When the pipe washing nozzle 1 floats toward the upper surface of the inner peripheral wall 20a of the pipe 20, the loose fitting valve stem 16 located above as shown in FIG.
Hit the top of the Then, the reciprocating member 15 moves downward by an external force, and the valve portion 18 opens one (upper) guide through hole 13 while closing the other (lower) guide through hole 13. Then, the high-pressure cleaning water W is jetted toward the upper surface of the inner peripheral wall 20a of the pipe 20, and as a result, the pipe cleaning nozzle 1 vigorously moves from the position of the virtual line to the position indicated by the solid line (for example, from top to bottom). Descend. FIG.
Indicates that the pipe washing nozzle 1 repeats the above-described operation mode, and
An example in which an object to be cleaned (for example, an adhered substance) 21 remaining in the pipe 20 in a self-traveling state is peeled off is shown.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, in the first embodiment described in the embodiment of the present invention, a pair of guide through holes 13 formed in the body 8 of the pipe cleaning nozzle 1 are used to connect the pipe cleaning nozzle 1, for example. Although it positively has a function as a second injection path for repeatedly moving up and down, the second injection path for repeatedly reciprocating the pipe washing nozzle 1 in the radial direction of the pipe 20 is not necessarily the guide through hole 13, It is not necessary to have 13 directly. For example, as shown in FIGS. 7 and 8, the second ejection path may be formed in a reciprocating member 15A that reciprocates through a pair of guide through holes 13, 13 in a linearly penetrating state. That is,
Even if one or more vertical groove-shaped second injection paths 22, 22 are formed on the outer peripheral wall of the loose fitting valve stem 16A located above the reciprocating member 15A and the loose fitting valve stem 16A located below, respectively. The same operations and effects as in the first embodiment are obtained.
Therefore, from the standpoint of a person skilled in the art, the second injection paths 22, 22 can be repeatedly communicated with the opening accommodating section 10 by moving to the reciprocating member 15A as in another embodiment (FIG. 10) described below. It may be replaced with a radial inflow path or a central injection flow path communicating with this inflow path.

In the first embodiment, it is also possible to add (limit) other components. For example, as shown in FIG. 13 to be described later, a partition wall is provided in the opening storage portion 10 so as to be located between the reciprocating member 15 and the hose joint 3, and a small-diameter partition channel is formed in the center of the partition wall. Is also good.

Next, another embodiment different from the first embodiment of the present invention will be described. In the description of the other embodiments, the same components as those of the first embodiment will be denoted by the same or similar reference numerals, and redundant description will be omitted.

The second embodiment shown in FIGS. 9 to 12 mainly differs from the first embodiment in the following points.

First, the second embodiment differs from the first embodiment mainly in the points listed below. The pipe cleaning nozzle 1B has a head 7
B and the trunk portion 8B are formed separately. Therefore, the head 7B is formed with a large-diameter ejection opening 30 formed from the front end face 7a toward the rear end face 7b and having a female thread on the inner peripheral surface. In addition, the head opening 7B is provided with the injection opening 30 and the opening storage section 10 on the side of the body 8B.
B are formed with small-diameter jet passages 31 communicating with each other. Further, a sealing member 32 for closing the injection opening 30 is screwed to the head 7B via the female screw. In addition, as shown in FIG. 10, a central screwing portion 33 that is screwed with a female screw formed at the center of the front end surface of the body 8B is formed at the center of the rear end surface 7b of the head 7B. I have. Therefore, the head 7B and the body 8B integrally form the pipe cleaning nozzle 1B by screwing. When the head 7B and the torso 8B are integrally connected, the rear end face 7b of the head 7B is connected to the torso 8B.
B protrudes from the outer peripheral surface 8a. Further, the leg 9B connected to the body 8B in a stepped shape also protrudes from the outer peripheral surface 8a of the body 8B.

Next, second injection paths 22B, 22B are formed in the pair of sliding fitting valve rods 16B, 16B for reciprocating the pipe washing nozzle 1B repeatedly in the radial direction of the pipe. That is the point. The second injection path 22B is not particularly designated by a reference numeral, but is provided with a reciprocating member 15A.
, A radial inflow path that can be repeatedly communicated with the opening storage section 10B, and a central injection flow path that communicates with the inflow path.

Next, the reciprocating member 15B is characterized in that not only a sliding fitting valve stem and the like but also a striking portion are included as a part of the constituent requirements. That is, the reciprocating member 15B has a required gap 35 with respect to the outer peripheral surface 8a of the body portion 8B at the protruding ends of the pair of sliding fitting valve rods 16B, 16B, and the impact portion 36 has an annular shape. (Including a tubular or annular one, and a divided one that is annularly disposed). In the second embodiment, the striking portion 36 is integrated with the sliding fitting valve stems 16B, 16B via male threads formed respectively at the protruding ends of the sliding fitting valve stems 16B, 16B. And is located between the head 7B and the leg 9B of the pipe cleaning nozzle 1B.

In the second embodiment, as shown in FIG. 12, the reciprocating member 15B is connected to the inner peripheral wall 20a of the pipe 20B.
Hitting portion 36 and guide through hole 13 of body portion 8B
The point of transition (retreating and protruding) via B and 13B, and the high-pressure washing water W flowing into the opening storage portion 10B is formed on one of the sliding fitting valve rods 16B of the reciprocating member 15B. The operation and effect of the invention are the same, except that the fuel is alternately and repeatedly injected from the second injection path 22B. And
The reciprocating member 15B includes not only the sliding fitting valve stem and the like but also an impact portion as a part of the constituent requirements.
Pipe cleaning nozzle 1 so that 6B and 16B are in a vertical state.
Even if B is not inserted into the pipe, that is, even if the pipe cleaning nozzle 1B is inserted into the pipe in a somewhat rough state, the contact area of the reciprocating member 15B with the inner wall surface of the pipe is extremely large in the circumferential direction. Because it is wide, pipe cleaning nozzle 1B
Can fully exhibit the reciprocating function.

In the second embodiment, as shown in FIG. 13, it is considered that it is sufficient to give the pipe washing nozzle 1B a sufficient floating force to hit the upper surface of the inner wall of the pipe. A partition wall 37 may be provided in the opening storage portion 10B so as to be located between the reciprocating member 15B and the hose joint 3B, and a small-diameter partition channel 38 may be formed in the center of the partition wall 37. Therefore, in the embodiment in which the partition wall 37 is limited to the constituent requirements, the object that the high-pressure cleaning water can be used efficiently can be achieved.

Next, in the third embodiment shown in FIGS. 14 to 16, the main difference from the first embodiment is that when the pipe cleaning nozzle 1C is inserted and set in the pipe, That is, the reciprocating direction with respect to the pipe can be set as desired.

Therefore, the third embodiment has the following structural differences from the first embodiment in order to achieve the above object. Reference numeral 40 denotes a positioning setting member of the reciprocating valve member 15C screwed into the large-diameter screw portion 5C of the hose joint 3C. A nut is employed as an example of the positioning setting member 40. The large diameter threaded portion 5C of the hose joint 3C is slightly longer than that of the first embodiment.

In the above configuration, when the cleaning hose 2C is dragged considerably from a dedicated cleaning vehicle (not shown) and the pipe cleaning nozzle 1C is inserted and set in the pipe, the state of the cleaning hose 2C is considered first. When the position of the reciprocating valve member 15C is desired to be vertical as shown in FIG.
For example, the right hand has a washing hose 2C, while the left hand has a pipe washing nozzle 1C. Then, the body 8C of the pipe washing nozzle 1C is screwed into the large-diameter threaded portion 5C of the hose joint 3C while being appropriately rotated. Therefore, when the reciprocating valve member 15C of the pipe cleaning nozzle 1C is in a vertical state at some point, the positioning setting member 40 is tightened to the reciprocating valve member 15C side. Then, the reciprocating valve member 15C is in a vertical state as shown in FIG.

Therefore, when the piping is repeatedly cleaned on the spot (for the second time), the next time the position of the reciprocating valve member 15C is changed (for example, if it is desired to be inclined), the positioning setting member 40 is moved. The position of the reciprocating valve member 15C can be easily set in an oblique direction, for example, by slightly loosening the pipe to the cleaning hose 2C side and turning the pipe cleaning nozzle 1C by the amount of the loosening.

The concept of the third embodiment may be applied as it is to the second embodiment. Therefore, for convenience, FIGS. 9 and 10 (including reference numerals) of the second embodiment are referred to,
17 to 19 show a pipe cleaning nozzle 1B in which a positioning setting member 40 is screwed into a large-diameter screw portion 5C of a hose joint 3C.
Is shown.

Finally, in the fourth embodiment shown in FIGS. 20 to 24, the purpose different from that of the first embodiment is mainly to pulverize the objects to be cleaned (lumps) remaining in the pipes. It is.

The fourth embodiment has the following structural difference from the first embodiment in order to achieve the above object.

First, the head 7D of the pipe washing nozzle 1D is formed separately from the body 8D, and the cap-shaped head 7D is screwed to the body 8D. Thus, a center hole 50 is formed at the center of the tip end surface 7a of the head 7D. A male screw is formed on the inner peripheral wall of the head 7D. On the other hand, a male screw that is screwed with the head 7D is formed on the outer peripheral wall of the cylindrical tip of the body 8D. Also the body 8D
A female screw is formed on the inner peripheral wall of the leg 9D connected to the hose joint 3D.

Next, the partition passage 51 is provided in the opening storage portion 10D.
This is a point that a partition 52 having the following is provided. Therefore, the opening storage portion 10D formed from the front end surface side of the trunk portion 8D toward the rear end surface of the leg portion 9D is divided into a first storage portion 53 and a second storage portion 54 based on the partition wall 52. Can be. Here, the first injection hole 12D for self-traveling will be described.
Is formed obliquely toward a vertical step surface between the trunk 8D and the leg 9D.

Next, the mounting position and the configuration of the reciprocating member 15D are different. The reciprocating member 15D is provided on the head 7D of the pipe cleaning nozzle 1D via the center hole 50 so as to be slidable in the direction of movement of the pipe cleaning nozzle 1D. Thus, the configuration of the reciprocating member 15D will be described.

Reference numeral 60 denotes a fitting valve stem portion penetrating the head 7D, and a disc-shaped external stopper 61 is screwed to a protruding tip portion of the fitting valve stem portion 60. External stopper 6
The inner wall surface 61a is separated from the distal end surface 7a of the head 7D or the distal end surface 7a depending on the mode of the pipe washing nozzle 1D.
Abut. In the center of the external stopper 61, a through hole having a female screw is formed.

In the fitting valve rod portion 60, a T-shaped second injection hole (path) 62 is formed.
2 is a vertical second inflow passage 62 formed at the inner end of the fitting valve stem 60 and capable of communicating with the first storage portion 53 described above.
a and a second horizontal direction communicating with the second inflow path 62a.
And an ejection path 62b.

Reference numeral 65 denotes an internal stopper 65 which extends in a direction crossing the inner end of the fitting valve stem 60. The internal stopper 65 has a head 7D depending on the mode of the pipe washing nozzle 1D.
Or comes away from the inner wall surface 7d. The internal stopper 65 should desirably be able to reciprocate in the first storage portion 53 when the partition wall 52 is provided as in this embodiment, but depending on the design, the second storage portion may be used. It may be arranged so as to be able to reciprocate within 54. In such a case, the internal stopper 6
5 comes into contact with the inner wall surface of the partition wall or separates from the inner wall surface depending on the mode of the pipe washing nozzle 1D. Reference numeral 66 denotes a fluid discharge passage formed in the internal stopper 65 in a penetrating state, and the fluid discharge passage 66 communicates with the first storage portion 53.

Reference numeral 67 denotes a fluid guide section which is continuous with the internal stopper 65 in a direction crossing (in the same direction as the fitting valve stem). In this embodiment, the fluid guide portion 67 is formed in a long cylindrical shape or a pipe shape, penetrates the partition wall flow path 51 of the partition wall 52 with a required gap, and has a central through hole 68 of the hose joint 3D. Is inside. One end 6 of fluid guide 67
7a is always slidably supported by the hose joint 3D regardless of the reciprocating movement of the reciprocating member 15D.

Therefore, in this embodiment, the reciprocating member 15D has an external stopper 61 at the protruding tip and a second injection hole 62 for injecting high-pressure washing water to the outside. 60 and the fitting valve rod portion 60 in a direction crossing the opening portion, and the opening storage portion (first storage portion 53) 10
An internal stopper 65 having a fluid discharge passage 66 always in communication with D, and a pipe-shaped fluid guide 67 connected to the internal stopper 65 and extending into the central through hole 68 of the hose joint 3D.

The fluid guide 67 of the reciprocating member 15D
Is supported by the hose joint 3D, but need not necessarily be inserted into and supported by the center through hole 68 of the hose joint 3D. The fluid guide 67 is not a specific requirement of the invention.

The operation of the above configuration will be described with reference to FIGS. FIGS. 21 and 22 show the case where the pipe washing nozzle 1D is traveling in the pipe 20D by itself.
It is each schematic explanatory drawing at the time of not colliding with the to-be-washed thing 21D, the lump which the attached matter fell here. In this case, the reciprocating valve member 15D slides in the forward direction due to the pressure of the high-pressure cleaning water W flowing into the opening storage sections (the first storage section 53 and the second storage section 54) 10D of the pipe cleaning nozzle 1D, and therefore, the internal The stopper 65 is pressed against the inner wall surface 7d of the head 7D, and the outer stopper 61 is separated from the outer wall surface 7a of the head 7D.

FIG. 23 shows a state in which the pipe cleaning nozzle 1D collides with the object 21D while traveling along the pipe 20D. In this case, the protruding distal end surface of the external stopper 61 or the fitting valve rod portion 60 vigorously abuts the object to be cleaned 21D. Then, the reciprocating valve member 15D slides back to the hose joint 3D side by the collision force. When the reciprocating valve member 15D is retracted, the internal stopper 65 is separated from the inner wall surface 7d of the head 7D, and the second injection hole (second inflow passage 62a) 62 of the fitting valve rod portion 60 is moved to the opening storage portion (first storage portion). Unit 53) communicates with 10D;

Then, the high-pressure cleaning water W in the opening storage section 10D is jetted from the second jetting hole 62 toward the object 21D to be cleaned. When this injection state continues over time, the cleaning target 21D is crushed as shown in FIG. Then, when the pulverization of the object to be cleaned 21D is completed, no so-called obstacle is present in the reciprocating valve member 15D, so that the high-pressure cleaning water flowing into the center through hole 68 of the hose joint 3D. The pressure is pushed back (returned) in the forward direction by the pressure, and the second injection hole (the second inflow path 62
a) 62 ends up hiding in head 7D. As a result, the high-pressure washing water W flowing from the central through-hole 68 into the first storage portion 53 via the fluid guide portion 67 flows into the partition passage 51.
, And flows all the way to the second storage portion 54 side, and the ejection force ejected from the first ejection holes 12D increases again.

[0044]

As is apparent from the above description, in the present invention, the inner diameter of the pipe is increased, or the object to be cleaned cannot fully exert the nozzle cleaning function in the inner part of the pipe. Even in the case where the pipe cleaning nozzle remains in such a state, the pipe cleaning nozzle advances toward the back of the pipe, and the object to be cleaned, which is an obstacle to the progress, can be easily removed while advancing. Particularly, since the jet water comes close to the object to be cleaned, the cleaning effect is extremely excellent. Further, the configuration is simple and the handling is easy. Furthermore, combination or disassembly is simple.

[Brief description of the drawings]

1 to 6 are explanatory views showing a first embodiment of the present invention. FIGS. 6 and 7 are explanatory views showing an example in which a part of the first embodiment is changed in design. 9 to 12 are explanatory views showing a second embodiment of the present invention. FIG. 13 is an explanatory diagram showing an example in which other components are limited to the second embodiment. 14 to 16 are explanatory views showing a third embodiment of the present invention. 17 to 19 are explanatory diagrams in the case where the same concept as the third embodiment of the present invention is applied to the second embodiment. 20 to 24 are explanatory views showing a fourth embodiment of the present invention.

FIG. 1 is a perspective view of a first embodiment.

FIG. 2 is a schematic sectional explanatory view.

FIG. 3 is a schematic sectional view taken along line 3-3 of FIG. 1;

FIG. 4 is a schematic explanatory view of a state of swinging (for example, floating) to one side.

FIG. 5 is a schematic explanatory view of a state of swinging (for example, falling) to the other side.

FIG. 6 is an explanatory diagram showing an example of an operation mode.

FIG. 7 is an explanatory view showing an example in which a part of the first embodiment is changed in design.

FIG. 8 is a perspective view of a main part (reciprocating valve member) in FIG. 7;

FIG. 9 is a perspective view of a second embodiment.

FIG. 10 is a schematic sectional explanatory view.

FIG. 11 is a schematic sectional view taken along line 11-11 of FIG. 10;

FIG. 12 is a schematic explanatory view of a state of swinging (for example, floating) to one side.

FIG. 13 is an explanatory diagram showing an example in which other components are limited to the second embodiment.

FIG. 14 is a perspective view of a third embodiment.

FIG. 15 is a schematic sectional explanatory view.

FIG. 16 is a schematic sectional view taken along line 16-16 of FIG. 15;

FIG. 17 is a perspective view in which the same concept as in the third embodiment is applied to the second embodiment.

18 is a schematic longitudinal sectional view of FIG.

FIG. 19 is a schematic sectional view taken along line 19-19 of FIG. 18;

FIG. 20 is a perspective view of a fourth embodiment.

FIG. 21 is a schematic longitudinal sectional view of FIG. 20;

FIG. 22 is an enlarged explanatory view of a main part of FIG. 21;

FIG. 23 is a schematic explanatory view at the time of a collision.

FIG. 24 is an explanatory diagram showing an example of an operation state.

[Explanation of symbols]

1-1D: pipe cleaning nozzle, 2, 2C: cleaning hose,
3, 3C, 3D: hose joint, 5, 5C: large-diameter threaded portion,
7, 7B, 7D: head, 7a: front end face, 7b: rear end face,
8, 8B, 8C, 8D: trunk, 9, 9B, 9D: leg,
10, 10B, 10D: Opening storage section, 12, 12D: First injection hole, 13, 13B: Guide through hole, 15 to 15D:
Reciprocating valve member, 16: loose fitting valve stem, 16B: sliding fitting valve stem, 18: valve portion, 20, 20B, 20D: piping, 20a
... Inner peripheral wall, 21 and 21D: object to be cleaned, 22: second injection path, 32: sealing member, 35: gap, 36: impact part, 37
... partition wall, 38 ... partition wall channel, 40 ... positioning setting member,
W: High-pressure washing water, 50: Center hole, 15, 15D: Reciprocating valve member, 60: Fitting valve rod, 61: External stopper, 6
1a: inner wall surface, 62: second injection hole, 62a: second inflow channel, 62b: second injection channel, 65: internal stopper, 66
... a fluid discharge path, 67 ... a fluid guide, 68 ... a through hole.

Claims (8)

[Claims] 1. A cleaning hose 2 fixed to an insertion end of a cleaning hose 2,
The pipe 20 is driven by the injection force from the first injection hole 12 for self-traveling.
Of the pipe cleaning nozzle 1 which travels to the back of the pipe, and a body 8 of the pipe cleaning nozzle 1 has a pair of guide through holes 13, 1, 1, each communicating with the opening storage section 10 into which the high-pressure cleaning water W flows.
3 is formed, and a reciprocating valve member 15 is penetrated in the body portion 8 through the guide through holes 13, 13. And a valve portion 18 which is always located at a position and which can alternately close the guide through-holes 13, 13, and alternately strikes the inner wall surface 20 a of the pipe 20 while being connected to the valve portion and protruding from the guide through-hole. A set of possible loose fitting valve stems 16, 16 is provided, and when washing the pipe 20, the pipe washing nozzle 1
When the high-pressure washing water W is injected from one of the guide through holes 13, it swings from one inner wall surface 20 a to the other inner wall surface, so that the reciprocating valve member 15 becomes one loose fitting valve rod 1.
While the protruding tip of 6 hits the other inner wall surface to open the guide through hole 13 on the hit side, it closes the guide through hole 13 of one inner wall surface 20a via the valve portion 18. First, the pipe washing nozzle 1 which has swayed in one direction oscillates from the other inner wall surface to one inner wall surface by the injection force injected from the guide through hole 13 on the impact side, and the reciprocating valve member 15 ,
This time, the projecting distal end of the other one of the loose fitting valve rods 16 strikes one of the inner wall surfaces facing each other to open one guide through hole 13, while the other inner wall surface 20 a through the valve portion 18 A pipe cleaning nozzle which repeats an operation of closing the side guide through hole 13. 2. The reciprocating member 15A according to claim 1,
Are slidably inserted into a pair of guide through holes 13, 13. The loose fitting valve stem 16 </ b> A located on one side of the reciprocating valve member 15 </ b> A and the loose fitting valve stem 16 </ b> A located on the other side are provided. A pipe washing nozzle characterized by forming second injection paths (22, 22) alternately communicating with the opening storage section (10) corresponding to the transition of the reciprocating valve member (15A). 3. The pipe washing nozzle according to claim 1, wherein a partition wall 37 having a partition channel 38 is provided in the opening storage section 10. 4. The reciprocating member 15B according to claim 1,
Is attached to the protruding ends of a pair of sliding fitting valve stems 16B, 16B,
A pipe cleaning nozzle characterized in that a wide impact portion 36 is integrally provided with a required gap 35 with respect to an outer peripheral surface 8a of a body portion 8B. 5. The pipe cleaning nozzle 1C according to claim 1,
Is screwed onto a large-diameter threaded portion 5C of a hose joint 3C fixed to the insertion-side end of the cleaning hose 2C, and the large-diameter threaded portion 5C is set for positioning a reciprocating valve member 15C. A pipe cleaning nozzle, wherein the member 40 is screwed. 6. The cleaning hose 2 is fixed to an insertion end of the cleaning hose 2,
The pipe 2 is driven by the injection force from the self-traveling first injection hole 12D.
A pipe cleaning nozzle 1D that travels to the back of 0D by itself, and has a second injection hole 62 formed at the head 7D of the pipe cleaning nozzle 1D so as to be able to communicate with the opening storage portion 10D into which the high-pressure cleaning water W flows. A reciprocating valve member 15D having a joint valve rod portion 60 is penetrated, and the reciprocating valve member 15D includes an internal stopper 65 always located in the opening storage portion 10D,
The fitting valve stem portion 60, which extends from the internal stopper 65 to the outside via the center hole 50 formed in the head and has an external stopper 61 at a protruding tip end, comprises the pipe washing nozzle 1D. When the stopper 61 or the projecting tip of the fitting valve rod portion 60 collides with the object 21D, the reciprocating valve member 15D slides back toward the hose joint 3D due to the collision force, and the high pressure is applied to the object 21D. The cleaning water is sprayed, while the object to be cleaned 21 as an obstacle is
When D disappears, the pressure of the high-pressure washing water flowing into the center through hole 68 of the hose joint 3D is pushed back in the forward direction by the pressure, and the second inflow path 62 of the second injection hole of the fitting valve rod portion 60 is formed.
a is a pipe washing nozzle characterized by being hidden inside the head 7D. 7. The pipe cleaning nozzle according to claim 6, wherein a partition wall 52 having a partition channel 51 is provided in the opening storage section 10D. 8. The reciprocating member 15D according to claim 6,
Has an external stopper 61 at the protruding tip, and has a second valve hole 60 having a second injection hole 62 for injecting high-pressure washing water to the outside;
And a fluid discharge path 66 constantly communicating with the opening storage section 10D.
And an internal stopper 65 having
A pipe-like fluid guide 67 extending into the central through hole 68 of the hose joint 3D in series with the pipe joint nozzle 5;