JPH0784759B2 - Sewer cleaning equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a sewer cleaning device that suctions and discharges foreign matters such as dust and sludge accumulated in sewers together with water, and then separates the foreign matters and water. Is.

[Prior art]

Conventionally, as a sewer cleaning device, as disclosed in Japanese Patent Publication No. 60-43504, a centrifugal dehydrator containing a basket rotated by a drive device, a cake tank, and a mist cleaner via a three-way valve. Connected, and the lower part in the basket in the centrifugal dehydrator and the cake tank are connected by a solid content discharge pipe, and further the other end of the suction pipe whose one end is arranged in the sewer is arranged in the basket. A sewer cleaning device having a structure in which a vacuum suction device is connected to the upper portion of the mist chuck is known.

[Problems to be solved by the invention]

In the case of the conventional sewer cleaning device, the sludge in the sewer is sucked by the suction pipe and supplied into the basket of the centrifugal dehydrator, and after removing water in the sludge by the centrifugal dehydrator, the three-way valve is switched. The solid matter in the basket is sucked and discharged into the cake tank through the solid content discharge pipe, but in this case, since the solid matter in the basket is dehydrated, there is a problem that it is difficult to be sucked and discharged. Since it is necessary to repeat suction of sludge into the basket and suction of solid matter into the cake tank by switching,
The operation is also complicated.

[Object and Structure of Invention]

An object of the present invention is to provide a sewer cleaning device that can advantageously solve the above-mentioned problems. The gist of the present invention is to provide a tank body 1 and an opening / closing lid 2 attached to the upper end thereof. The tank body 1 in the closed tank 3 consisting of a solid storage tank 7 which is attached to the vehicle body 5 of the truck 4 so as to be able to stand upside down, has an open upper end, and has a drainage opening 6 with a filter around the upper part. Is fixed to the tank main body 1, and a water storage chamber 8 is provided between the tank main body 1 and the solid material storage tank 7, and a discharge end of a suction pipe 9 for sucking foreign matter in the sewer and a suction of a vacuum suction pipe 10. The end means a sewer cleaning device characterized in that it is arranged in the upper part of the solid material storage tank 7.

〔Example〕

 Next, the present invention will be described in detail with reference to the illustrated example.

The drawings show an embodiment of the present invention, in which an opening / closing lid 2 is pivotally attached to an upper end portion of a tank body 1 having a circular cross section by a pivot 11, and the tank body 1 and the opening / closing lid 2 are opened and closed by a hydraulic pressure. The closed tank 3 is configured by being connected by the cylinder 12. One end of the support arm 13 and one end of the first hydraulic cylinder 14 for rotating the tank are pivotally attached to the left and right sides of the tank body 1 by an upper support shaft 15, and the other end of the first hydraulic cylinder 14 is A front support shaft 16 is pivotally attached to an intermediate portion of the vehicle body 5 in the track 4, and one end portion of a second hydraulic cylinder 17 is pivotally attached to a bottom side on both left and right sides of the tank body 1 by a lower support shaft 18, The other end of the support arm 13 and the second
The other end of the hydraulic cylinder 17 is pivotally attached to the rear end of the vehicle body 5 by a rear support shaft 19.

As shown in FIG. 2, when the closed tank 3 is erected upright,
The upper support shaft 15 is disposed below the middle point in the height direction of the tank body 1, the lower support shaft 18 is disposed at the lower rear part of the upper support shaft 15, and further on the left and right sides of the middle portion of the vehicle body 5. One end of the connecting metal fitting 21 is pivotally attached to the fixed support metal fitting 20 by a support shaft 22 extending in the front-rear direction, and brackets 23 are fixed to the lower parts on the left and right sides of the tank body 1 so that the closed tank 3 is in an upright position. When held in place, the connecting fitting 21 is raised and the other end of the connecting fitting 21 and the bracket 23 are bolted.
Combined by 24.

In the state shown in FIG. 2, the connecting fitting 21 is removed from the bracket 23, and then the first hydraulic cylinder 14 and the second hydraulic cylinder
When 17 is extended, the upper part of the closed tank 3 is rotated in the direction of falling backward, and after the closed tank 3 is kept horizontal, when the first hydraulic cylinder 14 and the second hydraulic cylinder 17 are expanded, As shown in FIG. 6, the tank body 1 is inclined so as to open obliquely downward. When the sewer cleaning device is moved, as shown in FIG. 3, the closed tank 3 is rotated in a horizontal state and fixed to the vehicle body 5 in an arc grooved pedestal 25.
Place on.

A solid storage tank 7 having a circular cross section with an open upper end is concentrically arranged in the tank body 1, and a lower end portion of the solid storage tank 7 is fixed to a bottom plate of the tank body 1. A large number of drainage openings 6 are provided around the upper part of 7, and the excess wire mesh filter is provided in the drainage openings 6.
26 is stretched, a water storage chamber 8 is provided between the tank body 1 and the solid matter storage tank 7, and the opening / closing lid 2 is provided with an inner lid 27 for opening and closing the upper end opening of the solid matter storage tank 7. An annular seal packing 51 is fixed to the inner lid 27.

On the front part of the vehicle body 5, a spare tank 30 having a settling tank 28 and a water storage tank 29 and a water circulation type vacuum pump 31 are mounted.
The drain port provided in the lower part of the tank body 1 and the upper part of the water injection vertical pipe 32 inserted in the settling tank 28 are provided with an electromagnetic opening / closing valve 33 and an electric motor 34.
Is connected via a water pipe 36 with a pump 35 driven by the vacuum pump 31 being connected to one end of the vacuum suction pipe 10 at the suction port of the vacuum pump 31.
The other end of the vacuum suction pipe 10 is hermetically penetrated and fixed to the opening / closing lid 2 and the inner lid 27, and the other end of the vacuum suction pipe 10 is opened in the solid material storage tank 7.

The water suction port of the vacuum pump 31 and the drainage port at the bottom of the water storage tank 29 are connected via a water supply pipe 38 having an opening / closing valve 37, and the lower end of an exhaust vertical pipe 39 inserted into the water storage tank 29 from below. And the exhaust port of the vacuum pump 31 are connected via an exhaust pipe 40, and a suction nozzle 42 having a handle 41 is connected to one end of the suction pipe 9, and the other end of the suction pipe 9 is opened and closed as described above. Lid 2
Further, it is airtightly fixed to the inner lid 27, and the other end of the suction pipe 9 is opened in the solid material storage tank 7.

A sensor 43 for detecting the upper limit of the water level in the water storage chamber at a level between the lower edge and the upper edge of the drainage opening 6 on the side wall of the tank body 1.
Is fixed and the water level in the water tank 8 rises to the level of the sensor 43, the electromagnetic on-off valve 33 is opened by an electric signal from the sensor 43 and the pump is driven by the electric motor 34.
35 is operated for a certain period of time, and the water in the water storage chamber 8 is sent into the settling tank 28.

A water discharge pipe 45 having an electromagnetic opening / closing valve 44 at the drain of the water storage tank 29.
Is connected to the water tank 29, and a water tank upper and lower limit sensor 46 for water level detection is attached to the water tank 29, and when the water level in the water tank 29 rises to a predetermined upper limit level, an electromagnetic on-off valve is activated by an electric signal from the sensor 46. 44 is opened, the water in the water storage tank 29 is discharged into the sewer 47 through the discharge pipe 45, and when the water level in the water storage tank 29 drops to a predetermined level, an electromagnetic on-off valve 44 is generated by an electric signal from the sensor 46. Is closed. An air discharge port 48 is provided above the spare tank 30.

As the suction pipe 9, the vacuum suction pipe 10, the water supply pipe 36, and the water discharge pipe 45, pipe bodies at least partially connected to hoses are used.

After the electromagnetic on-off valve 33 is opened and the pump 35 is operated by the electric signal from the water level upper limit detection sensor 43, the electromagnetic on-off valve 33 is closed by the electric signal by the operation of the timer after a fixed time. The operation of the pump 35 may be stopped, or a sensor for detecting the lower limit of the water level may be attached to the lower end of the tank body 1, and when the water level in the water tank 8 drops to the lower limit level, an electromagnetic signal is generated by the electric signal from the sensor. The opening / closing valve 33 may be closed and the operation of the pump 35 may be stopped.

Next, an example of use of the sewer cleaning device will be described.

First, as shown in FIG. 1, a plurality of partition walls 49 made of sandbags that are piled up at appropriate intervals are provided in the sewer 47 such as a road gutter, and the vacuum pump 31 is operated to move the space between the partition walls 49. The water and foreign matter 50 such as dust and sludge are suction-supplied into the solid material storage tank 7 through the suction nozzle 42 and the suction pipe 9.

When the foreign matter 50 and water in the solids storage tank 7 increase and the water level in the solids storage tank 7 becomes higher than the lower edge of the drainage opening 6, the water in the solids storage tank 7 is drained. When the water overflows from the portion 6 into the water storage chamber 8 and the water level in the water storage chamber 8 rises to a predetermined upper limit level, the water in the water storage chamber 8 is settled as described above.
The water level in the settling tank 28 is sent to the settling tank 28 and the water tank.
Water overflows from the settling tank 28 to the water storage tank 29 when it exceeds the upper edge of the partition plate between the water tank 29 and the water tank 29.

On the other hand, the operation of the vacuum pump 31 causes a negative pressure in the tank body 1 to pass through the suction pipe 9 and foreign matter 50 such as water, dust, and sludge.
When water is sucked into the tank body 1, the water and foreign matter
The air sucked together with 50 gathers in the upper part of the tank body 1, is sent to the intake port of the vacuum pump 31 through the vacuum suction pipe 10 by the action of the vacuum pump 31, and is then sent out from the exhaust port. After that, the gas is discharged into the atmosphere through the exhaust pipe 40, the exhaust vertical pipe 39, and the air discharge port 48.

The vacuum pump 31 is a water circulation type pump (known art) as described above, and a part of the water stored in the water storage tank 29 is sent into the vacuum pump 31 through the water supply pipe 38, and the inside of the casing thereof. An eccentric impeller (not shown) is rotated to form a circulating flow of water flowing along the inner cylinder wall of the casing, and the recirculating compression action of this circulating water acting as a piston is used to cause a vacuum suction pipe 10 to pass through. The air from the tank body 1 is sucked into the vacuum pump 31, and then the air and part of the circulating water are sent out to the exhaust pipe 40.

Next, after the foreign matter 50 is stored in the solid material storage tank 7 to a level above the lower edge of the drainage opening 6, the vacuum pump
The operation of 31 is stopped, and then, as shown in FIG. 1 and FIG. 2, the truck 4 equipped with the sewer cleaning device is run to the foreign substance dumping place while the closed tank 3 is erected, and then FIG. As shown in FIG. 4, the closed tank 3 is rotated in the direction of tilting backward, and the closed tank 3 is tilted so that the opening / closing lid 2 side of the closed tank 3 is directed backward and obliquely downward, and the opening / closing hydraulic pressure is set. The opening / closing lid 2 is opened by the cylinder 12 and the foreign matter 50 in the solid matter storage tank 7 is discharged.

After the discharge of the foreign matter 50 from the solid matter storage tank 7 is completed, the opening / closing lid 2 is closed and the closed tank 3 is rotated horizontally and placed on the pedestal 25, as shown in FIG.

Next, after the truck 4 is again moved to the sewer cleaning place, the closed tank 3 is raised as shown in FIGS. 1 and 2, and then the sewer is cleaned as described above.

When carrying out the present invention, a transparent plate is provided on the side wall of the tank body 1 in order to confirm that the foreign matter 50 is stored in the solid material storage tank 7 to a level above the lower edge of the drainage opening 6. May be provided with a see-through window that is airtightly attached, or a foreign substance upper limit level detection sensor may be attached to the upper part of the solid matter storage tank 7.

〔The invention's effect〕

According to the present invention, the solids storage tank 7 is open at the upper end and has the drainage opening 6 with a filter around the upper portion.
Is fixed to the tank body 1 in the closed tank 3, a water storage chamber 8 is provided between the tank body 1 and the solids storage tank 7, and the suction end of the suction pipe 9 for sucking foreign matter in the sewer and vacuum suction Since the suction end of the pipe 10 is arranged in the upper part of the solid substance storage tank 7, the water and the foreign matter 50 in the sewer 47 are sucked and stored in the solid substance storage tank 7 by the suction pipe 9 and the solid substance is absorbed. When the level of water in the storage tank 7 rises above the lower edge level of the drainage opening 6, the water can be automatically overflowed from the drainage opening 6 into the water storage chamber 8, and therefore the water can be overflowed. Without using the power to separate the foreign matter 50 from the
Water and foreign matter 50 can be separated by a simple means, and the foreign matter 50 can be mainly stored in the solid matter storage tank 7. Further, when the foreign matter 50 in the solid matter storage tank 7 is discarded, it is simply a closed tank. 3 so that the side of the open / close lid 2 is diagonally downward,
By rotating and inclining the closed tank 3 and opening the opening / closing lid 2, the foreign matter 50 in the solid material storage tank 7 can be easily discharged.

[Brief description of drawings]

The drawings show one embodiment of the present invention. FIG. 1 is a vertical sectional side view showing a part of a sewer cleaning device, and FIG. 2 is a partially cutaway side view showing the sewer cleaning device mounted on an automobile. Is. FIGS. 3 to 5 show a state in which a closed tank in a sewer cleaning device mounted on an automobile is leveled. FIG. 3 is a side view, FIG. 4 is a plan view, and FIG.
The figure is a front view. FIG. 6 is a side view showing a state in which the tank body is tilted and the opening / closing lid 2 is opened. In the figure, 1 is a tank body, 2 is an opening / closing lid, 3 is a closed tank, 4 is a truck, 5 is a vehicle body, 6 is a drainage opening, and 7 is a drainage opening.
Is a solid storage tank, 8 is a water storage chamber, 9 is a suction pipe, 10 is a vacuum suction pipe, 12 is a hydraulic cylinder for opening and closing, 13 is a support arm, 14 is a first hydraulic cylinder for rotating the tank, and 15 is an upper support. Shaft, 16 is a front support shaft, 17 is a second hydraulic cylinder for rotating the tank, 18 is a lower support shaft, 19 is a rear support shaft, 25 is a pedestal, 26 is an excessive wire mesh filter, 27 is an inner lid, 28 is a settling tank, 29 is a water tank, 31 is a vacuum pump, 33 is an electromagnetic opening / closing valve, 35 is a pump, 36 is a water supply pipe, 41 is a handle, 42 is a suction nozzle, 43 is a sensor for detecting the upper limit of the water level in the water reservoir, 44 Is an electromagnetic on-off valve, 45 is a water discharge pipe, 47 is a sewer, and 50 is a foreign substance.

Claims (1)

[Claims] 1. A tank main body 1 in a closed tank 3 comprising a tank main body 1 and an opening / closing lid 2 attached to the upper end of the tank main body 1 is attached to a vehicle body 5 of a truck 4 so as to be able to stand up and down, and the upper end is opened and an upper portion is provided. A solids storage tank 7 having a drainage opening 6 with a filter around it is fixed to the tank main body 1, and a water storage chamber 8 is provided between the tank main body 1 and the solids storage tank 7 to 2. The sewer cleaning device, wherein the discharge end of the suction pipe 9 for sucking the foreign matter and the suction end of the vacuum suction pipe 10 are arranged in the upper part of the solid material storage tank 7.