JPH0830359B2 - Sewer pipe cleaning method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for continuously suctioning and discharging deposits such as sludge in a sewer pipe and deposits around the sewer pipe.

[Conventional technology]

Conventionally, as a method for cleaning the inside of the sewer pipe, Japanese Patent Laid-Open No. 63-
As disclosed in Japanese Patent No. 70730, a scraping device that is rotated by a drive device is provided at the front part of a vehicle body that has traveling devices that are pressed against the left and right side walls in a sewer pipe, and is connected to a vacuum suction source. The suction end of the suction pipe is opened toward the scraping end of the scraping device, the winch is fixed to the winch support member fixed to the track on the ground, and the rope extended from the winch is attached to the vehicle body. While connecting and driving the traveling device, the winch pulls the vehicle body through the rope to move the carriage supporting the scraping device forward, and the accumulation in the lower part of the sewer pipe scraped by the scraping position. A method is known in which an object is sucked and discharged by a suction tube.

[Problems to be Solved by the Invention]

In the case of the conventional system for cleaning the inside of the sewer pipe, it is possible to clean the inside of the sewer pipe, but it is not possible to discharge and clean the deposits on the upper side inside the sewer pipe, and it is placed in one manhole. To connect the winch rope to the car body placed in the other manhole,
Since the worker must hold the tip of the rope by hand and move from one manhole to the other manhole through the sewer pipe, a complicated work is required.

Furthermore, when the sewer pipe has a small inner diameter, workers cannot enter the sewer pipe, so connect the end of the rope to the end of the flexible rod such as wire or bamboo,
It is necessary for an operator to grasp the rod and push it into the sewer pipe together with the rope, but such push-insertion work is complicated, and when the sewer pipe through which the rope is inserted is long, the insertion work is required. Can be difficult or impossible.

The present invention is capable of sucking and discharging the deposits and deposits on the entire circumference in the sewer pipe, and the member for pulling and moving the pipe cleaning device can be easily inserted into the sewer pipe and has a small inner diameter. It is an object of the present invention to provide a method for cleaning the inside of a sewer pipe that can be easily inserted into the sewer pipe.

[Means for solving the problem]

In order to achieve the above-mentioned object, in the sewer pipe cleaning method of the present invention, while propelling the high pressure water from the propulsion nozzle 2 attached to the tip of the water supply hose 1, the high pressure water jet reaction force causes Hose 1 to front manhole 3
A pipe cleaning device 9 provided with a suction pipe 7 supporting a rotary suction nozzle 6 which is moved backward from the inside into the rear manhole 5 through the sewer pipe 4 and is rotated around the center line of the sewer pipe 4. To the vacuum suction source via a suction hose 10, and directly or indirectly connect the tip of the water supply hose 1 to the inside of the pipe cleaning device. The rotary suction nozzle 6 is rotated while pulling 9 to move forward, so that the deposited deposit in the sewer pipe 4 is suctioned and discharged.

[Work]

By the reaction force of the high-pressure water jetted from the propulsion nozzle 2 attached to the tip of the water supply hose 1, the water supply hose 1 automatically moves from the front manhole 3 through the sewer pipe 4 into the rear manhole 5. Be moved to. After the tip of the water supply hose 1 is directly or indirectly connected to the pipe cleaning device 9, the pipe cleaning device 9 is pulled by the water supply hose 1 and travels forward, and the rotary suction nozzle 6 is rotated. The deposits and deposits in the sewer pipe are sucked and discharged through the rotary suction nozzle 6, the suction pipe 7 and the suction hose 10.

〔Example〕

 The present invention will now be described in detail with reference to the illustrated example.

6 to 9 show a first example of the in-pipe cleaning device 9 used in the embodiment of the present invention, which is a front part and a rear part of the moving frame 11 moved in the sewer pipe 4 having a circular cross section. The left and right sides of each of which are provided with substantially frustoconical running wheels 8, the suction pipes 7 arranged concentrically in the sewer pipe 4 are fixed to the moving frame 11, and concentric in the sewer pipe 4. A suction nozzle body 13 having a flat suction port that opens toward the inner surface of the sewer pipe 4 is integrally bent and connected to the front end of the cylindrical body 12 that is arranged
A rotary suction nozzle 6 is configured, and a rear portion of the cylindrical body 12 of the rotary suction nozzle 6 is provided with a bearing 14 at a front end portion of the suction pipe 7.
A plurality of retaining / thrust-bearing spheres 15 that are rotatably fitted in the cylindrical body 12 and extend over an annular groove formed on the outer periphery of the rear end of the cylindrical body 12 and an annular groove formed on the inner periphery of the front portion of the suction pipe 7. And the front portion of the cylindrical body 12 is supported by a supporting cylinder 16 of the moving frame 11 via a bearing 17.

A nozzle rotation drive device 18 composed of a reduction gear and an electric motor with a brake or a hydraulic motor is fixed to the lower part of the moving frame 11, and a drive gear 19 fixed to a rotation shaft of the drive device 18 is of the cylindrical body 12. The rotary suction nozzle 6 is rotated by the drive device 18 by being meshed with the driven gear 20 fixed to the intermediate portion.

A support member 21 inclined to the radial line of the sewer pipe 4 on the rear side surface of the suction nozzle main body 13 in the rotation direction.
Is fixed, and the scraper 22 made of hard rubber and the scraper holding member 23 fixing this are slidably fitted to the support member 21 so as to be able to move back and forth toward the inner surface of the sewer pipe 4, And the adjusting screw rod 26 is fixed to the base end portion of the spring holding cylinder 25 accommodating the scraper pressing spring 24, and the screw rod 26 is inserted into the end plate of the base end portion of the support member 21.
It is fixed by a pair of nuts 27 and 28, and further, the base end side portion of the pressing rod 29 is slidably fitted into the tip end portion of the spring holding cylinder 25, and the tip end portion of the pressing rod 29 is the scraper holding member 23. Is provided on the front side of the scraper 22 and the scraper holding member 23 on the front end side, and the riding guide slope 30 is provided so as to be inclined so as to be displaced forward from the inner surface of the sewer pipe 4 toward the center side. ing. The scraper
22 is pressed against the inner surface of the sewer pipe 4 by being pressed by the scraper pressing spring 24 through the pressing rod 29 and the scraper holding member 23, and the scraper 22 is integrated with the rotary suction nozzle 6 and It rotates in the direction of arrow A in the figure.

On the left and right sides of the front and rear of the moving frame 11,
A guide member 31 having a groove-shaped cross section with an inward flange extending in the up-down direction is fixed, and an intermediate portion of an operation lever 32 is pivotally attached by a horizontal shaft 33 and is fitted to the guide member 31 so as to be able to move up and down. A wheel supporting member 35 is fixed to the elevating member 34, a bearing wheel 36 pressed against the inner surface of the upper part of the sewer pipe 4 is rotatably attached to the upper end of the wheel supporting member 35, and one end of the operating lever 32 is Wheel support member 35
To the other end of the operating lever 32, a piston rod of a lifting hydraulic cylinder 38 attached to the moving frame 11 is pivotally connected by a pin to the other end of the operating lever 32 to expand and contract the hydraulic cylinder 38. Then, the support wheels 36 are moved up and down.

A television camera 39 for photographing the lower front portion of the pipe cleaning device 9 is arranged above the cylindrical body 12 of the rotary suction nozzle 6, and the television camera 39 is mounted on the upper portion of the support cylinder 16 of the moving frame 11 via a fixture. Fixtures that illuminate the photographing part on both the left and right sides of the TV camera 39.
40 is connected via a connecting member, and the rotary suction nozzle 6 is further fixed with a bearing holding metal fitting 42 fitted with a thrust bearing 41 arranged on the center line of the sewer pipe 4,
An annular bearing support fitting 43 is fixed to the front end portion of the bearing holding fitting 42 by a bolt 44.

FIG. 10 shows a water supply hose with a connecting tool and a propulsion nozzle used in an embodiment of the present invention, in which a propulsion nozzle 2 is connected to the tip of a water supply hose 1 for pumping high-pressure water. A bolt 46 is screwed onto the tip of the connecting shaft 45 fixed to the tip of the nozzle 2, and an engaging washer 47 is fitted on the bolt 46.
Around the circumference of, a fountain hole 49 for obliquely ejecting high-pressure water toward the water supply hose side is provided.

Next, a case will be described in which the inside of the sewer pipe is cleaned using the pipe cleaning device 9 of the first example and the water supply hose 1 with the connector and the propulsion nozzle shown in FIG.

First, as shown in FIG. 1, a truck 51 equipped with a high-pressure water supply pump device (not shown) and a water supply hose winding reel 50 is arranged near the front manhole (downstream manhole) 3 on the ground. Further, a guide pulley 52 is attached to the upper front end of the sewer pipe 4, and the water supply hose 1 fed from the water supply hose winding reel 50 is guided to the front end portion of the sewer pipe 4 via the guide pulley 52. Next, high-pressure water is jetted from the propulsion nozzle 2 attached to the tip of the water supply hose 1, and the ejection reaction force causes the propulsion nozzle 2 and the water supply hose 1 connected thereto to move the front end of the sewer pipe 4 ( Move from the downstream side) to the rear side (upstream side).

In addition, the pipe cleaning device 9 is arranged at the bottom of the rear manhole (upstream manhole) 5, and the vacuum suction tank 53, the generator, the hydraulic unit, and the like on the ground near the rear manhole 5.
A truck 54 equipped with a monitor TV, a control panel, etc. is arranged, and the suction pipe 7 of the pipe cleaning device 9 and the vacuum suction tank 53 are connected via a suction hose 10, and the pipe cleaning device 9 is also installed.
Lifting hydraulic cylinder 38, nozzle rotation drive device 1
8, the lighting equipment 40, the television camera 39, etc. are connected to the hydraulic unit, the power supply, the control panel, etc. mounted on the truck 54 via a liquid supply hose or a cord.

When the propulsion nozzle 2 reaches the rear manhole 5, the injection of high-pressure water from the propulsion nozzle 2 is stopped,
Moreover, the bearing support metal fitting 43 and the thrust bearing 41 in the pipe cleaning device 9 placed at the bottom of the rear manhole 5 are removed, and they are fitted to the connecting shaft 45 at the tip of the nozzle 2 and inserted into the engaging washer 47. After the bolt 46 is screwed into the connecting shaft 45, the bearing support fitting 43 is fixed to the bearing holding fitting 42 with the bolt 44.

Next, as shown in FIG. 2, the suction hose 10, liquid feed hose, cord, etc. connected to the in-pipe cleaning device are wound around the guide sheave 55 attached to the bottom of the rear manhole 5, and the rotary suction nozzle 6 is rotated. In addition, while the support wheels 36 are pressed against the inner surface of the upper portion of the sewer pipe 4, the drive device on the truck 51 rotates the water supply hose winding reel 50 in the winding direction to clean the pipe interior with the water supply hose 1. The device 9 is pulled forward.

In this way, the rotary suction nozzle 6 moving forward while rotating rotates to suck up the deposits such as sludge in the sewer pipe 4 and the deposits on the inner surface of the sewer pipe, and remove the sucked deposits and foreign substances such as the deposits. Then, it is sucked into the vacuum suction tank 53 through the suction pipe 7 and the suction hose 10.

When the pipe cleaning device 9 passes through the connecting portion of the sewer pipe 4, and when there is a step at the connecting portion of the sewer pipe 4, as shown in FIG. In the state of being lowered, the in-pipe cleaning device 9 is moved from one sewer pipe to the other sewer pipe. In this place,
Since the riding guide slope 30 is provided in front of the scraper 22 and the scraper holding member 23, the scraper 22
And the scraper holding member 23 smoothly gets over the stepped portion of the sewer pipe connecting portion.

FIG. 11 to FIG. 14 show a second example of the pipe cleaning device which can be used when the present invention is carried out. A plurality of sled movement sleds 56 are provided in the lower part of the suction pipe 7 in the left-right direction. The sled 56 and the suction tube 7 are arranged at a connecting member.
A metal front support plate 59 and a metal rear support plate 60, which are connected to each other via 57 and are fixed to the front and rear ends of the rubber airbag 58, are welded to the upper portion of the suction tube 7 by welding or the like. Further, a plurality of synthetic resin sliding members 61 that extend in the front-rear direction are fixed to the outer surface of the upper portion of the airbag 58 in the left-right direction with an adhesive and are fixed to the rear support plate 60. Is connected to an air supply pipe 62 that communicates with the inside of the airbag 58, but other configurations are the same as in the case of the pipe cleaning device of the first example.

In the case of the pipe cleaning device 9 of the second example, the pipe cleaning device 9 moves a portion other than the connection portion in the sewer pipe 4,
When the compressed air is supplied into the air bag 58 when moving through the stepless connection portion, the air bag 58 is inflated, the sliding member 61 is pressed against the upper portion in the sewer pipe 4, and the pipe cleaning is performed. When the device 9 passes through the stepped connection portion of the sewer pipe 4, as shown in FIG. 14, the compressed air in the airbag 58 is discharged, the airbag 58 contracts, and the upper portion of the airbag 58 is compressed. The sliding member 61 is separated from the upper part in the sewer pipe 4.

When carrying out the present invention, when there is no large step between the inner surfaces of the ends of the connected sewer pipes 4, the hard rubber scraper 22 is omitted and the tip opening of the rotary suction nozzle 6 is placed on the inner surface of the sewer pipe 4. You may make it close. Also a water supply hose 1
Therefore, when the pipe cleaning device 9 is towed forward through the propulsion nozzle 2, water may be ejected from the propulsion nozzle 2 or may not be ejected from the propulsion nozzle 2.

After inserting the water supply hose 1 into the sewer pipe 4, the propulsion nozzle 2 is removed, and a connecting shaft 45 having a bolt 46 and an engaging washer 47 is connected to the tip end of the water supply hose 1, and the connecting shaft
45 may be connected to the pipe cleaning device 9 as described above.

The traveling wheel 8 may be attached to the moving frame 11 and the above-mentioned air bag may be attached to the upper portion of the suction pipe 7. Further, the sliding movement sled may be attached to the lower portion of the moving frame 11 and the upper portion of the moving frame 11 may be attached. A bearing wheel that is moved up and down by a lifting hydraulic cylinder may be provided on the. Furthermore, as the water supply hose 1, a rubber high pressure resistant hose in which a metal wire extending in the longitudinal direction of the hose is embedded in the peripheral wall may be used, or a rubber high pressure resistant hose in which reticulated fibers are embedded in the peripheral wall. May be used.

〔The invention's effect〕

Since the present invention is configured as described above, it has the following effects.

While ejecting high-pressure water from the propulsion nozzle 2 attached to the tip of the water supply hose 1, the ejection reaction force of the high-pressure water causes the water supply hose 1 to pass from the inside of the front manhole 3 through the inside of the sewer pipe 4 to the rear manhole. 5, the water supply hose 1 can be automatically inserted into the sewer pipe 4 by a simple means, and the water supply hose 1 can be inserted into the sewer pipe 4 with a small inner diameter without any trouble. Further, the rotary suction nozzle 6 moves in the longitudinal direction of the sewer pipe 4 while rotating around the center line of the sewer pipe 4, and deposits in the sewer pipe 4 and the entire circumference of the sewer pipe 4 Since the adhered substances are sucked, the entire circumference of the sewer pipe 4 can be automatically cleaned.

[Brief description of drawings]

FIGS. 1 to 10 show an embodiment of the present invention, and FIG. 1 is a schematic vertical sectional side view showing a state in which a water supply hose is inserted into a sewer pipe by a jet reaction force of a propulsion nozzle. Fig. 2 is a schematic vertical side view showing a state in which the inside of the pipe cleaning device is pulled forward by a water supply hose via a propulsion nozzle to clean the inside of the sewer pipe, and Fig. 3 is shown in Fig. 2. FIG. 4 is a partially longitudinal side view showing a part in an enlarged manner, and FIG. 4 is a partially transverse plan view showing the vicinity of an in-pipe cleaning device in a sewer pipe. FIG. 5 is a partially longitudinal side view showing a state in which the in-pipe cleaning device passes through the stepped portion of the sewer pipe connecting portion. 6 to 9 show a first example of a pipe cleaning device used in an embodiment of the present invention. FIG. 6 is a side view, FIG. 7 is a plan view, and FIG. 8 is a part. Vertical side view,
FIG. 9 is a partially longitudinal front view. FIG. 10 is a plan view showing a propelling nozzle and a water supply hose with a connector used in an embodiment of the present invention. 11 to 14 show a second example of a pipe cleaning apparatus which can be used when the present invention is carried out. FIG. 11 is a partially longitudinal side view, FIG. 12 is a plan view, and FIG. The drawing is a cross-sectional view taken along the line AA of FIG. 11, and FIG. 14 is a partially longitudinal side view showing a state when the in-pipe cleaning device passes through the stepped portion of the sewer pipe connecting portion. In the figure, 1 is a water supply hose, 2 is a propulsion nozzle, 3
Is a front manhole, 4 is a sewer pipe, 5 is a rear manhole, 6 is a rotary suction nozzle, 7 is a suction pipe, 8 is a traveling wheel, 9 is a pipe cleaning device, 10 is a suction hose, 11 is a moving frame, 12 is Cylindrical body, 13 is suction nozzle body, 16 is support cylinder, 18
Is a nozzle rotation drive device, 19 is a drive gear, 20 is a driven gear, 22 is a hard rubber scraper, 23 is a scraper holding member, 24 is a scraper pressing spring, 25 is a spring holding cylinder, 30 is a riding guide slope, 31 is a guide member, 32 is an operation lever, 34 is a lifting member, 35 is a wheel support member, 36 is a support wheel,
38 is a lifting hydraulic cylinder, 39 is a television camera, 41 is a thrust bearing, 42 is a bearing holding metal fitting, 43 is a bearing support metal fitting, 44 is a bolt, 45 is a connecting shaft, 46 is a bolt, 47 is a lock washer, 49 Is a fountain hole, 53 is a vacuum suction tank, 56 is a sled for sliding movement, 58 is a rubber airbag, 61 is a synthetic resin sliding material,
62 is an air supply pipe.

Claims (1)

[Claims] 1. A high-pressure water is jetted from a propelling nozzle 2 attached to the tip of a water-feeding hose 1, and the high-pressure water jet reaction force causes the water-feeding hose 1 to flow from a front manhole 3 to a sewer pipe 4. The hose for water supply to the pipe cleaning device 9 provided with a suction pipe 7 supporting a rotary suction nozzle 6 which is moved back through into the rear manhole 5 and rotated around the center line of the sewer pipe 4. 1 is directly or indirectly connected to the suction pipe 7, and the suction pipe 7 is connected to a vacuum suction source via a suction hose 10. Then, the water supply hose 1 pulls the pipe cleaning device 9 to move forward. A method for cleaning the inside of a sewer pipe, in which the rotary suction nozzle 6 is rotated while traveling to suck and discharge the deposited deposit in the sewer pipe 4.