JP2015231605A - Method and device for cleaning drain pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and device for cleaning a drain pipe in which, when removing the earth and sand attached and deposited on a pipe inner wall, even if the drain pipe is formed of materials easily damaged, it can be reduced from being damaged, and furthermore, the fluidity of the earth and sand attached and deposited on the inner wall of the drain pipe is increased, and thereby the earth and sand can efficiently be removed.SOLUTION: In the tip side of a hollow shaft 20 with a connection part 51 for connecting a high-pressure water hose 64 in one end of a root side, excavating water jet holes 23 are circumferentially provided to multiple places of a circumferential wall at suitable intervals. Multiple blade plates 45 in a water wheel 43 are arranged in an outer circumferential spatial position of an external wall surface 20a of the hollow shaft 20. Further, a rotating brush 36 is disposed in an outer circumferential position of the shaft 20. The rotating brush 36 is connected to the water wheel 43, and the external dimension of the rotating brush 36 is made larger than the external dimension of the water wheel 43.

Description

  The present invention relates to a drainage pipe cleaning method and a drainage pipe cleaning device that can be used when removing sediment accumulated in a drainage pipe attached to an expressway or the like.

  Conventionally, on roads for driving automobiles such as highways, drainage traps (also called staghorns) are installed at arbitrary intervals on the shoulders to discharge rainwater on the roads, as is well known. doing. And the rainwater collected in each said drainage basin is flowed toward arbitrary sewers through the drainage pipe connected with each drainage basin.

  In addition, in such a case, as is well known, the individual drainage pipes connected to the respective drainage basins and directed in the direction of the culverts are caused by various circumstances such as corresponding to the planar structure of the road as shown in FIG. Are connected to drainage pipes which are trunk lines arranged in a state having a slight gradient (a horizontal state close to the horizontal).

  In this way, when the slope of the drainage pipe that is the main line is small and gentle, as is well known, the earth and sand contained in the drainage from each drainage basin that flows down the drainage pipe that becomes the main line is the pipe of the drainage pipe. The sediment adheres to the bottom of the wall and accumulates and solidifies on the bottom of the pipe wall over time, reducing the effective cross-sectional area of the drainage pipe from 80% to 60% and even 50%.

Therefore, road managers regularly perform work to remove sediment deposited on the bottom of the pipe wall of the drain pipe.
As an example of the technique, as is well known, a high pressure hose dedicated to sewage pipe cleaning is inserted into the drain pipe so that the high pressure water flows through the nozzle provided at the tip of the hose. Therefore, there is a means for washing away sediment accumulated in the pipe wall of the drain pipe.

As another means, it is known to use an in-pipe cleaning tool as disclosed in Patent Document 1.
The in-pipe cleaning tool of Patent Document 1 is an instrument for crushing and removing the adhered matter deposited and deposited on the inner wall of the pipe by the vibration of the cylindrical blade at the tip of the main body, and is fixed to the cylindrical blade and vibrates back and forth. A configuration is provided that includes a vibrating body and a high-pressure water jet tube fixed to the vibrating body, and crushes and removes the sticking matter deposited and deposited on the inner wall of the pipe by the vibration of a cylindrical blade at the tip of the main body.

Japanese Patent Laid-Open No. 8-66668

  However, the means for inserting the high-pressure hose inside the drain pipe and spraying high-pressure water forward from the nozzle at the tip of the hose to wash away the sediment accumulated on the bottom of the pipe wall of the drain pipe is as follows: There is a problem of poor elimination efficiency.

In the above means, since the high-pressure hose is flexible, the tip of the nozzle provided at the tip of the hose passes through a portion with less resistance toward the traveling direction, that is, the space above the drain pipe. It has the property of being on the earth and sand deposited on the bottom of the tube wall and traveling in a sliding state.
Therefore, the high-pressure water flow ejected forward from the nozzle flows along the upper surface of the “sediment deposited on the bottom of the tube wall”, and is too much to remove the sediment deposited on the bottom of the tube wall. There was a problem that the sediment removal efficiency was extremely poor.

Further, as in Patent Document 1, a pipe having a configuration for crushing and removing the sediment adhered to the inner wall of the pipe at the tip of the high-pressure water jet tube main body and the sediment deposited in the pipe by the vibration of the cylindrical blade at the tip of the main body The cleaning tool cannot be used due to the following circumstances.
That is, many drainage pipes attached along roads for driving automobiles such as highways are made of "synthetic resin such as hard vinyl chloride" as is well known, and the pipe wall is Has relatively weak properties against impact.

  Therefore, in removing the sediment accumulated in the drainage pipe, it is necessary not to damage the pipe wall of the weak drainage pipe, but the configuration disclosed in Patent Document 1, that is, The in-pipe cleaning tool configured to crush and remove the sediment accumulated in the drain pipe by the vibration of the cylindrical blade at the tip of the main body may damage the pipe wall made of the above-mentioned `` made of synthetic resin such as hard vinyl chloride '', In the case where even a slight curved portion is formed in the drain pipe, there is a problem that it cannot be used in most cases.

The purpose of the present application is to solve the above-mentioned problems. A drain pipe cleaning method and a drain pipe cleaning device that can efficiently remove sediment by increasing the fluidity of sediment deposited and deposited on the inner wall of the pipe. It is something to be offered.
Another object of the present invention is to remove the sediment deposited and deposited on the inner wall of the pipe, and the drain pipe cleaning method and drain pipe can reduce damage to the pipe even if the drain pipe is made of a material that is easily damaged. A cleaning device is to be provided.
Other problems, objects and advantages will be readily apparent from the drawings and the following description associated therewith.

In the drainage pipe cleaning method of the present invention, a hose for supplying high-pressure water is inserted inside the drainage pipe, the high-pressure water is discharged into the drainage pipe from the tip of the hose, and the earth and sand in the drainage pipe is allowed to flow. In the drain pipe cleaning method to
The discharge direction of the high-pressure water discharged from the tip of the hose is a radial direction, discharging water toward the earth and sand adhering to the inner wall of the drainage pipe, and discharging from the tip of the hose toward the inner wall of the drainage pipe. The high-pressure water is configured to turn the blades of the water wheel against the blades of the water wheel provided between the tip of the hose and the inner wall of the drain pipe,
Further, a rotating brush configured to rotate the brush along the inner surface of the tube wall is provided on the rear side of the water wheel, and the rotating brush is connected to the water wheel to rotate the water wheel. Configured to be rotationally driven by
By advancing the hose inserted inside the drain pipe, water is sprayed on the earth and sand adhering to the inner wall of the drain pipe with high-pressure water discharged from the tip of the hose toward the inner wall of the drain pipe. Water is added to the earth and sand adhering to the inner wall, and then the rotary brush is advanced while rotating, so that the earth and sand adhering to the inner wall of the drainage pipe are scraped off with the rotary brush to give fluidity to the earth and sand. It is what I did.

In the drain pipe cleaning method of the present invention, a hollow portion of the cylindrical hollow shaft body 20 having a connection portion 51 for connecting the hose 64 for high-pressure water to one end on the base side is hollow. To a plurality of locations on the peripheral wall of the shaft body 20, it is possible to discharge high-pressure water toward the earth and sand 70 adhering to the inner wall of the drainage pipe 10, respectively, at an appropriate interval. The excavation water ejection hole 23 is arranged so as to discharge high-pressure water,
A space between the outer peripheral wall surface 20a of the hollow shaft body 20 and the inner wall surface 11 of the drain pipe 10 positioned around the outer peripheral wall surface of the shaft body 20 is coaxial with the axis of the shaft body 20. A plurality of blades 45 in the water turbine 43 provided to rotate at a position are arranged, and the blades 45 receive high-pressure water from the excavation water ejection holes 23 discharged in the radial direction. The water wheel 43 is configured to rotate, and the outer dimensions of the water wheel 43 are sufficiently smaller than the inner dimensions of the inner wall surface 11 of the drain pipe 10 positioned around the water wheel 43, and the rotating brush 36. The gap 49 is formed to be smaller than the outer dimensions of the material and sufficient to allow the earth and sand 70 to remain around.
Further, a rotating brush 36 is provided at the outer peripheral position of the shaft body 20 so as to rotate at a position coaxial with the axis of the shaft body 20, and the rotating brush 36 is driven by the water wheel 43. In addition, the outer dimensions of the rotary brush 36 are large and close to the inner dimensions of the inner wall surface 11 of the drain pipe 10 positioned in the periphery, and It is configured larger than the external dimensions,
The shaft body 20, the water wheel 43, and the rotating brush 36 are inserted into the interior of the drain pipe 10 and are advanced, so that the shaft body 20 is directed toward the earth and sand 70 attached to the inner wall surface 11 of the drain pipe 10. The high pressure water 23a from the excavation water ejection hole 23 to be prepared is sprayed, the water wheel 43 is rotated, and the rotating brush 36 is further rotated to spray the high pressure water 23a from the excavation water ejection hole 23. The soil and sand 70 are given fluidity.

  Preferably, a protective ring 46 is attached to the front peripheral edge 43a of the water wheel 43 so as to prevent the inner wall surface 11 from being damaged even when the front end of the water wheel 43 contacts the inner wall surface 11 of the drain pipe 10. Anything is acceptable.

  Preferably, the brushes 65 and 66 may be attached to the front side of the water wheel 43 so that the central portions 65a and 66a protrude and form a mountain shape.

  Preferably, a slight space is provided between the inner peripheral surface of the bearing member 37a of the rotating brush 36 and the outer peripheral surface 20a of the shaft body 20, from which the hollow portion 21 inside the shaft body 20 is provided. What is necessary is just to supply high-pressure water.

  Further, preferably, the shaft body 20 is provided with a propulsion device 22 provided with a cleaning device propulsion water ejection hole 25 for ejecting high-pressure water fed toward the inside of the shaft body 20 backward. Anything that has been done.

  As described above, according to the present invention, in the process in which the tip of the hose passes through the upper surface of the sediment accumulated in the drain pipe, the discharge direction of the high-pressure water discharged from the tip of the hose is the drain pipe. The sediment deposited in the drainage pipe is in a state of being dug up by a high-pressure fountain discharged from the tip of the hose toward the inner wall of the drainage pipe. The earth and sand deposited on the bottom of the tube has the characteristic of becoming "a mud containing sufficient water or a mud-like state".

In addition, the present invention continues to reach the upper side of the mud or mud-like earth and sand, and the mud-like earth and sand is scraped up and scattered on the peripheral wall of the drain pipe. It is possible to increase the fluidity of mud.
This means that when the flow gradient of the drain pipe is large, it is possible to flow and discharge the muddy earth and sand which is highly fluid as it is, and when the flow gradient of the drain pipe is small, There is an operational effect that makes it possible to flow the muddy earth and sand having high fluidity by flowing water through the drain pipe toward the downstream with little effort.

  Moreover, according to the configuration of the present invention, the vane plate of the water wheel is disposed around the tip of the hose, and the discharge direction of the high-pressure water discharged from the tip of the hose is directed from the center toward the inner wall of the drain pipe. In addition, it is provided with a rotating brush formed larger than the outer shape of the water wheel on the rear side of the blade of the water wheel, and is connected to the water wheel so as to rotate integrally. Even if the pipe wall of the drain pipe is made of a relatively weak material, for example, synthetic resin such as “made of hard vinyl chloride”, it is the rotating brush that contacts the pipe wall of the drain pipe. The main body of the cleaning device has the advantage that it can safely remove the sediment deposited inside the drainage pipe without causing a great impact on the pipe wall of the drainage pipe and damaging the pipe wall.

The front schematic diagram for demonstrating the relationship between the bridge of an expressway, the drainage basin with which the road surface was equipped, and a drain pipe. The principal part expanded sectional view for demonstrating the cleaning method by positioning a cleaning apparatus inside the weft pipe to which the vertical pipe in the drain pipe is connected. The connection part to which the connector of the hose in a cleaning apparatus is connected is made into a half section, and the remaining cylindrical hollow base shaft, a rotating brush, a water wheel, etc. are fragmentary sectional views. The example of a different structure of the front side of the waterwheel located in the front part side in the cleaning apparatus of FIG. 3 is shown, and the example provided with the brush comprised in the mountain shape is shown. The example of a different structure of the front side of the waterwheel located in the front part side in the cleaning apparatus of FIG. 4 is shown, and the modification of the brush comprised in the mountain shape is shown. The VI-VI position expanded sectional view of the water wheel in FIG.

Embodiments of the present invention will be described below with reference to the drawings. Reference numeral 4 in FIG. 1 indicates a known highway, for example, a so-called bridge. Reference numeral 5 denotes a main part (bridge girder part), 6 denotes a road (floor slab), 7 denotes a bridge pier, and 9 denotes a well-known drainage basin provided on the road surface 6 of the expressway 4. 10 is a well-known drainage pipe that is connected to a drainage basin 9 (also referred to as a squeeze mouth) and flows rainwater toward a ground water channel (sewage pipe), and is composed of a plurality of members. In the figure, 10a is a dredging pipe that connects the drainage dredger 9 and the weft pipe 10b, 10b is a weft pipe (a trunk-shaped drainage pipe extending in the horizontal direction) that connects a plurality of dredging pipes 10a, and the drainage pipe 10 An elbow-shaped pipe 10c for bending the middle of the pipe, a collecting pipe 10d for collecting rainwater from the plurality of weft pipes 10b, and the like.
The drain pipe 10 (10a, 10b, 10c, 10d, etc.) is often made of a synthetic resin material such as hard vinyl chloride.

Next, in the cleaning device 18, reference numeral 20 denotes a cylindrical body having a hollow portion 21, and is provided with a connection portion 51 for connecting a high-pressure water hose 64 to one end on the base side. On the front side of the shaft body 20, high-pressure water is directed toward the earth and sand 70 attached to the inner wall of the drainage pipe 10, which is spaced apart from each other at appropriate intervals with respect to a plurality of locations on the peripheral wall of the hollow shaft body 20. It is possible to discharge the high-pressure water in the radial direction so that an arbitrary number of excavation water ejection holes 23 (four are arranged at equal intervals) are provided. ing.
A metal is usually used as the material of the shaft body 20, but any material that can sufficiently withstand a high pressure water pressure of 10 to 20 MPa for washing a sewer pipe that is usually used may be used (the other materials used in the present invention may also be used). In the same way, materials can be selected and used based on common general knowledge). Reference numeral 30 denotes a sealing lid plate for preventing water leakage from the tip of the shaft body 20.

Next, the propulsion device 22 will be described. The propulsion device 22 applies a force in the forward direction to the cleaning device 18 by ejecting the high-pressure water sent from the high-pressure hose 64 backward.
In the figure, reference numerals 26 and 27 denote discs (two fixedly attached to the outer peripheral surface of the shaft body 20) arranged in parallel with a space between each other in order to form an ejection port 29, and between them High pressure water is ejected from the cleaning device propelling water ejection hole 25 into the space. The ejection holes 25 are provided with an arbitrary plural number (in the figure, four are arranged at equal intervals). Reference numeral 28 denotes a shroud for forming a jet outlet (may be a plurality of jet holes or an annular jet hole) 29 facing backward (in the direction of arrow 71).
With such a configuration, the cleaning device 18 can obtain a forward propulsive force by the high-pressure water ejected from the rearward ejection port 29 in the state shown in FIG. By doing so, the cleaning device 18 can be sequentially advanced by the propulsion device 22.

Reference numeral 36 denotes a rotating brush. Reference numeral 37 denotes a base frame of the rotating brush 36, which is formed in a hollow cylindrical shape and is rotatably attached to the shaft body 20 as shown in FIG. In the base frame 37, 37a is a bearing member facing the outer peripheral surface 20a of the shaft body 20, 37b is a brush holding portion that is provided around the outer periphery and holds the brush member, and 37c is a bearing member 37a. A connecting member 37d for connecting the brush holding portion 37b is a donut plate-like reinforcing member whose inside is fixed to the bearing member 37a.
The rotating brush 36, which is adapted to rotate at a position coaxial with the axis of the shaft body 20 at the outer peripheral position of the shaft body 20, is connected to the water wheel 43 as described later so as to be driven by the water wheel 43. It is.

Further, as can be understood from FIG. 2, the outer dimensions of the rotating brush 36 correspond to the inner dimensions of the inner wall surface 11 of the drain pipe 10 positioned around the inner diameter of the inner wall surface 11 of the drain pipe 10. The dimensions are large (appropriate gaps are provided around them so that rotation does not hinder the resistance of earth and sand remaining inside the inner wall surface 11 as shown in the figure).
Further, when the outer dimension of the rotating brush 36 is configured to be larger than the outer dimension of the water wheel 43 and the tube is advanced in the direction of the arrow 73 as shown in FIG. 2, the water wheel 43 does not hit the inner wall surface of the drain pipe 10. (Does not damage the inner wall surface of the drain pipe 10). The number, thickness, length, and material (for example, made of synthetic resin) of the brush 40 of the rotating brush 36 are well-known cleaning brushes so that the elastic brush 40 suitable for scraping the earth and sand 70 of FIG. 2 can be obtained. Use technical matters related to. 39 is a slight space formed between the outer peripheral surface 20a of the shaft body 20 and the inner peripheral surface of the bearing member 37a. When the rotating brush 36 rotates, a water film based on high-pressure water is formed here. A bearing effect can be achieved (the outer peripheral surface of the shaft body 20 and the inner peripheral surface of the bearing member 37a can be rotated substantially without mechanical friction).

Reference numeral 24 denotes a bearing portion lubricating water ejection hole configured to discharge (spout) high-pressure water from the inside of the shaft body 20 in the radial direction (toward the space 39). Arranged at intervals). 38a and 38b are stoppers arranged so as to prevent the movement of the base frame 37 in the front-rear direction. As shown in the figure, 38a is fixed to the outer peripheral surface of the shaft body 20, and 38b is a shaft body. A step portion is provided on the outer peripheral surface of 20.
In addition, although the structure as illustrated is disclosed as the bearing member 37a, a known bearing such as a plain bearing, a ball bearing, a rolling bearing, or the like may be selectively used.

Next, the water wheel 43 connected to the shaft body 20 will be described. The plurality of blades 45 of the water wheel 43 that appear well in FIGS. 3 and 6 are present at the outer peripheral position of the outer peripheral wall surface 20a of the hollow shaft body 20, and as shown in FIG. It arrange | positions so that it may be located in the space position 11a between the inner wall surfaces 11 of the drain pipe 10 located in the periphery away from the outer peripheral wall surface of 20.
Then, the shaft body 20 is rotated at a position coaxial with the axis of the shaft body 20. In the figure, reference numerals 44a and 44b denote annular side plates which are adapted to rotate in a state where a plurality of blades 45 are supported on both sides. The single side plate 44a is connected to the connecting member 37c of the rotating brush 36 so as to be adjacent to the connecting member 37c as shown in the figure so as to freely rotate integrally, and is provided with a fixing portion at an arbitrary position.

  The plurality of blades 45 supported by the annular side plates 44a and 44b are directed radially from the plurality of excavation water ejection holes 23 provided around the shaft body 20 as can be understood from FIG. The high-pressure water stream 23a discharged (spouted) collides in the process toward the inner surface 11 of the drain pipe, and the water wheel 43 is rotated in the direction of the arrow 72. The quantity, pitch, angle of inclination, etc. of the blades 45 are appropriate to meet the demands such as the pressure of the high-pressure water, the quantity of the excavating water ejection holes 23, the external dimensions of the rotary brush 36, the rotational speed of the rotary brush 36, etc. You just have to decide.

Further, the outer dimension of the water wheel 43 is sufficiently smaller than the inner dimension of the inner wall surface 11 of the drain pipe 10 positioned around as shown in FIG. 2 and smaller than the outer dimension of the rotating brush 36. In addition, the outer peripheral surface of the water turbine 43 is configured so as not to hit the inner wall surface 11 of the drain pipe 10 (so as not to damage the inner wall surface 11 of the drain pipe 10), and the earth and sand 70 to be injected remain around. It is configured so that a sufficient gap 49 is left to be able to.
Note that the high-pressure water flow 23a discharged in the radial direction from the plurality of excavation water ejection holes 23 collides with the blade plate 45 in the process toward the inner surface 11 of the drain pipe, and the angle in the direction along the inner surface 11 of the tube wall. Instead, it becomes the force that digs up the earth and sand 70 toward the inner surface 11 of the drain pipe. Further, the quantity, pitch, and the like of the blades 45 in FIG. 6 may be such that all of the water flow in the radial direction from the excavation water flow holes 23 hits the blades 45 and then goes to the earth and sand 70. The combination is changed by changing the number of the water flow holes 23 and the number of the blade plates 45 (changing the pitch), and if there is a water flow (a water flow that rotates the water wheel 43) that hits the blade plate 45, directly There may also be a water stream that vigorously faces the earth and sand 70.

46 is a circular protective ring having a circular cross section, and is provided around the front end of the water wheel 43 so that the front end of the water wheel 43 directly contacts the inner wall surface 11 of the drain pipe 10 and damages the inner wall surface 11. Is to prevent. 47 is a space provided so as not to disturb the radiated water from the excavating water flow hole 23.

  Reference numeral 51 denotes a connecting portion for connecting a high-pressure water hose 64 dedicated to sewage pipe cleaning to the rear end of the hollow shaft body 20. The rear end is fixed (for example, with welding), and a female thread portion 52 is provided at the rear end of the connecting member 54. Reference numeral 60 denotes a known hose connector for high-pressure water dedicated to sewage pipe cleaning, 61 is a male threaded portion that can be brought into and out of contact with the female threaded portion 52, 62 is a nut for operation, and 63 is a tip portion of a hose 64 A protecting ring for protecting is shown. Accordingly, high-pressure water (for example, high pressure water of 10 to 20 MPa) fed from the hose 64 is excavated through the hollow portion 53 and the hollow portion 21 of the shaft body 20, and the water jet hole 23 for lubrication of the bearing portion is ejected. The water is ejected from the hole 24 and the cleaning device propulsion water ejection hole 25, respectively, and the water wheel 43 is rotated, the bearing member 37a is floated, and the forward function of the propulsion device 22 is exhibited.

  The cleaning operation of the interior 11a of the drain pipe 10 will be described using the drain pipe cleaning device 18 having the above-described configuration. As shown in FIG. 2 from the arbitrary drainage basin 9 in FIG. 2, the cleaning device 18 including the shaft body 20 connected to the sewage pipe cleaning dedicated high-pressure water hose 64, the water wheel 43, and the rotating brush 36 is shown. 10 inside 11a. Next, as is well known, the cleaning device 18 is advanced by operating the high-pressure water hose 64 connected to the high-pressure water generator (not shown) for cleaning the sewage pipe. In this case, if the propulsion device 22 exists, the propulsion function (the jet output from the jet port 29) may be used. When the propulsion device 22 is not present, the cleaning device 18 is advanced by operating the high-pressure water hose 64.

As the cleaning device 18 progresses, the high-pressure water 23a from the excavating water ejection hole 23 provided in the shaft body 20 is present in the interior 11a of the drain pipe 10 by changing its direction either directly or against the blade plate 45 of the water wheel 43. It will be sprayed toward the earth and sand 70. In that case, since the high-pressure water hose 64 has flexibility, the ejection direction of the high-pressure water 23a from the excavating water ejection hole 23 toward the earth and sand 70 attached to the inner wall 11 of the drain pipe 10 is as follows. Randomly, the earth and sand 70 adhering to the inner wall 11 of the drain pipe 10 is dug up as appropriate, and the earth and sand 70 contains a large amount of water.
Moreover, since the high pressure water 23a hits the vane plate 45 of the water wheel 43 by the injection, the water wheel 43 is rotated, and therefore, the rotation of the water wheel 43 is caused by rotating the rotating brush 36 that rotates integrally therewith. It will be rotated.
When the rotary brush 36 rotates, the high-pressure water 23a from the excavation water ejection hole 23 is sprayed to agitate the earth and sand 70 containing water, thereby imparting fluidity thereto.

  Inside the drain pipe 10, there is water blown from the excavation water ejection hole 23, the bearing portion lubrication water ejection hole 24, the cleaning device propulsion water ejection hole 25, and the like, and a large amount of these water is downstream. Therefore, the earth and sand 70 imparted with the above fluidity will also flow down. If there is a large amount of earth and sand that cannot be discharged sufficiently, it is recommended that the washing water be poured from a separate well-known means, that is, a high-pressure water generator for washing a sewer pipe (not shown). Good.

  Next, reference numeral 65 in FIG. 4 denotes a leading rotating brush provided at the leading end of the cleaning device 18, which shows an embodiment different from the circular protective ring 46 formed in an annular shape in FIG. is there. 4 and 5 showing the embodiment of the present invention, the technical matters related to the reference numerals of the technical matters described with reference to FIGS. 1, 2, 3, and 6 are as follows. Except for matters relating to the explanation of new member configurations, combinations, etc. added in the explanation, the configurations, functions, properties, features, etc. of the components, members etc. using the same reference numerals as in the above figure are the same, so the following overlap Description is omitted.

The front rotating brush 65 shown in FIG. 4 prevents the front end of the water wheel 43 from directly hitting the inner wall surface 11 of the drain pipe 10 and damaging the inner wall surface 11.
In FIG. 4, 67 is a brush substrate which is formed in a mountain shape by slightly tilting the surrounding member 67b, and in an annular position (doughnut-shaped position) on the surface of the surrounding substrate 67b on the front side thereof. Further, brushes 40a of the same quality as the above-described brushes protruded obliquely toward the outer periphery are provided. Therefore, no brush is present at the central position 67a of the brush substrate. The hole 67c in the substrate 67a is a through hole for allowing the high-pressure water ejected from the hole 30a provided in the cover plate 30 in the hollow shaft body 20 to be ejected forward.

  In the above configuration, the cleaning device 18 shown in FIG. 4 appears in FIG. 2 in the same manner as described above (as described with reference to FIGS. 1, 2, 3, and 6). Used. In this case, due to the presence of the leading rotary brush 65 located at the leading end, the brush 40a is annularly arranged at the front end of the water turbine 43 even if the drain pipe 10 has a curved portion. Therefore, the top of the water wheel 43 is prevented from directly hitting the inner wall surface 11 of the drain pipe 10 to damage the inner wall surface 11. Moreover, since the high-pressure water ejected from the hole 30a provided in the cover plate 30 is ejected toward the forward earth and sand 70, there is also an effect of softening the earth and sand 70.

5 is configured to prevent the front end of the water wheel 43 from directly hitting the inner wall surface 11 of the drain pipe 10 and damaging the inner wall surface 11.
In FIG. 5, 67 (67a, 67b) is a brush substrate formed so that the cross-sectional shape is a box shape as shown in FIG. 5, and the front side (67a) and the four side surfaces ( On the surface of the substrate around 67b), brushes 40c and 40d of the same quality as the brush described above are provided in a protruding state in the outer peripheral direction in a state perpendicular to the substrate.

  In the above configuration, the cleaning device 18 appearing in FIG. 5 appears in FIG. 2 as described above (as described with reference to FIGS. 1, 2, 3, and 6). Used. In this case, due to the presence of the leading box-shaped rotary brush 66 located at the leading end, the brushes 40c and 40d protrude from the front end of the water turbine 43 toward the outer circumference even when the drain pipe 10 has a curved portion. Since the water turbine 43 rotates together with the water wheel 43, the head of the water wheel 43 is prevented from directly hitting the inner wall surface 11 of the drain pipe 10 and damaging the inner wall surface 11.

4 ... Bridge
5 ... Main part (beam part),
6 ... road (base)
7 ... piers,
9 ... Drainage basin
10 ... Drain pipe,
10a ...
10b ... weft pipe (main-line drainage pipe extending in the horizontal direction),
10c ・ ・ ・ Elbow pipe,
10d ... collecting pipe,
11 ... the inner surface of the drain pipe,
18 ... Cleaning device,
20 ... Cylindrical hollow shaft,
21 ... hollow part,
23 ... water ejection hole for excavation,
24 ... water ejection holes for lubricating the bearings,
25 ... Water ejection hole for cleaning device propulsion,
22 .... Propulsion device,
26 ... disc,
27 ... disk,
28 ... Fence board,
29 ... spout,
30 ... lid plate,
36 ... rotating brush,
37 ... Base frame of the rotating brush, 37a ... Bearing member,
37b ... Brush holding part,
37c: connecting member,
37d ... reinforcing member,
38 ... stopper,
39 ... Water chamber,
40 ... Brush,
43 ... water wheel
44 ... side plate,
45 ... slats,
46: protective ring,
47 ... space,
49 ... Gap,
51 ... connection part,
52 ... Female thread part,
53 ... hollow part,
54 ... Connecting member,
55... Connection part by welding means,
60 ... Connector,
61 ... male screw part,
62 ... nut,
63 ... protective ring,
64... High pressure water hose dedicated to sewage pipe cleaning,
65, 66 ... brush,
70 ... earth and sand

Claims (6)

In the drainage pipe cleaning method, a hose for supplying high-pressure water is inserted inside the drainage pipe, the high-pressure water is discharged into the drainage pipe from the tip of the hose, and the earth and sand in the drainage pipe flows.
The discharge direction of the high-pressure water discharged from the tip of the hose is a radial direction, discharging water toward the earth and sand adhering to the inner wall of the drainage pipe, and discharging from the tip of the hose toward the inner wall of the drainage pipe. The high-pressure water is configured to turn the blades of the water wheel against the blades of the water wheel provided between the tip of the hose and the inner wall of the drain pipe,
Further, a rotating brush configured to rotate the brush along the inner surface of the tube wall is provided on the rear side of the water wheel, and the rotating brush is connected to the water wheel to rotate the water wheel. Configured to be rotationally driven by
By advancing the hose inserted inside the drain pipe, water is sprayed on the earth and sand adhering to the inner wall of the drain pipe with high-pressure water discharged from the tip of the hose toward the inner wall of the drain pipe. Water is added to the earth and sand adhering to the inner wall, and then the rotary brush is advanced while rotating, so that the earth and sand adhering to the inner wall of the drainage pipe are scraped off with the rotary brush to give fluidity to the earth and sand. A method for cleaning a drain pipe, characterized by: On the tip side of a cylindrical hollow shaft body provided with a connecting portion for connecting a hose for high pressure water to one end of the base portion side, an appropriate interval is provided with respect to a plurality of locations on the peripheral wall of the hollow shaft body. Separately, it is possible to discharge high-pressure water toward the earth and sand adhering to the inner wall of each planned drainage pipe. Let
The space position between the outer peripheral wall surface of the hollow shaft body and the inner wall surface of the drain pipe positioned around the outer peripheral wall surface of the shaft body is rotated at a position coaxial with the shaft core of the shaft body. A plurality of blades in a water wheel provided in the above are arranged so that the water wheel rotates by receiving the high pressure water from the excavation water ejection hole discharged in the radial direction. In addition, the outer dimensions of the water turbine are sufficiently smaller than the inner dimensions of the inner wall surface of the drain pipe located around the periphery, and smaller than the outer dimensions of the rotating brush, so that the earth and sand remain in the surroundings. Configured to leave sufficient clearance to be allowed to
Furthermore, a rotating brush is provided at the outer peripheral position of the shaft body so as to rotate at a position coaxial with the axis of the shaft body, and the rotating brush is attached to the water turbine so as to be driven by the water wheel. In addition, the outer dimensions of the rotating brush is a large dimension close to the inner dimension of the inner wall surface of the drainage pipe located around the outer circumference, and is configured to be larger than the outer dimension of the water wheel.
The shaft body, the water wheel, and the rotating brush are inserted into the drainage pipe and are advanced so that the excavation water ejection hole provided in the shaft body is directed toward the earth and sand adhering to the inner wall surface of the drainage pipe. The high-pressure water from the water is sprayed, the water wheel is rotated, and the rotating brush is further rotated to impart fluidity to the sand and sand sprayed with the high-pressure water from the excavation water ejection hole. A drain pipe cleaning device.   The drain according to claim 2, wherein a protective ring is attached to the front peripheral edge of the water wheel so as to prevent the inner wall surface from being damaged even when the front end of the water wheel contacts the inner wall surface of the drain pipe. Tube cleaning device.   3. The drain pipe cleaning device according to claim 2, wherein a brush is attached to the front side of the water wheel so that the central portion protrudes into a mountain shape.    A slight space is provided between the inner peripheral surface of the bearing member of the rotating brush and the outer peripheral surface of the shaft body, and high pressure water is supplied to the space from the hollow portion inside the shaft body. The drain pipe cleaning device according to any one of claims 2 to 4.   The shaft body is provided with a propulsion device provided with a cleaning device propulsion water ejection hole for ejecting the high-pressure water sent toward the inside of the shaft body toward the rear. The drain pipe cleaning device according to 2 to 5.

Images