JP2566541B2 - Mud suction removal device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for sucking and removing mud accumulated in a basin such as a covered gutter and an underdrain on the roadside of a road or a mud accumulated in an open gutter.

[0002]

2. Description of the Related Art A conventional mud suction / removal device has a structure in which the end of a suction hose connected to a vacuum blower of a gutter cleaning vehicle is attached to a cylindrical mud suction pipe, and the mud suction pipe is accumulated in the gutter. It is inserted into the muddy soil, the vacuum blower is operated, and the suction force removes the muddy soil by sucking it into the mud suction pipe and the suction hose. One type of pump that has a different purpose of use is the "mixed air jet pump." This is a structure in which a high-pressure water jet nozzle is installed in the bending part of the suction pipe in the axial direction, and high-pressure water is jetted from the nozzle to create a negative pressure in the pipe, and at the same time suck up the water by the negative pressure. The nozzle is equipped with an air inlet pipe, which also sucks in air at a negative pressure and carries and discharges water in the state of high-speed airflow, and is mainly used for discharging earth and sand during excavation. Similarly, for the purpose of excavation, there is a reverse circulation method of "air lift type pump". When excavating the excavated earth and sand, it is sucked by a vacuum pump and is perpendicular to the axis of the lower end of the drill pipe filled with muddy water. Compressed air is blown in and the excavated sediment is discharged together with the air flow.

The tip shape of the mud suction pipe of the mud suction / removal device of the conventional gutter cleaning vehicle is typically a cylindrical shape and is most often used. In order to suck mud using this mud suction pipe, it cannot be sucked unless air is introduced from the suction port. That is, if the tip of the mud suction pipe is completely submerged in mud or muddy water, suction force (-450 m
This is because the combined force of the shear force of the mud and the mud suction pipe inner wall, the gravity of the mud, and the plastic deformation resistance of the mud becomes larger than mHg), and suction cannot be performed. The suction force P of the vacuum pump in this case is expressed by the following equation. P <N + W + F P: Vacuum pump suction force N: Frictional force between mud and mud suction pipe inner wall W: Gravity of mud F: Plastic deformation resistance of mud Conventionally, as a countermeasure for this, cut at the tip of the mud suction pipe A notch is provided to help the inflow of air, but if this notch is completely buried in the mud, the suction effect will also disappear, and a part of the notch will be buried in the mud to leave the remaining cut. Even when inhaling a large amount of air from the notch, the mud suction effect was poor. Further, when there is a water layer on the mud, the water cannot be removed by the conventional device, and therefore the mud cannot be removed unless the water is removed by suction in advance (separately). In particular, a large amount of water was accumulated in the basins such as gutters, which was a problem. For this reason, it is necessary to remove the water before removing the mud, which requires a lot of time and effort to remove this water, which is inefficient, and extra work for transporting the mud is required, resulting in reduced work efficiency. There was a drawback to

[0004]

DISCLOSURE OF THE INVENTION The present invention solves these drawbacks of the prior art. The first object is to remove mud even when the tip of the mud suction pipe is completely buried in the mud. It can be removed by suction, and even if there is a layer of water on the mud, it is possible to remove only the mud with the lower part of the mud suction pipe completely buried in the mud without previously (separately) sucking and removing the water. Is to Secondly, the work of adjusting the position of the suction port of the mud suction pipe and moving the mud suction pipe vertically and horizontally is facilitated and the work efficiency is improved.

[0005]

[Means for Solving the Problems]

The structure of the present invention which has solved such a problem is as follows: 1) A lower portion of a vertical mud suction pipe connected to a suction pump has a double pipe structure, and the lower portion of the double pipe structure is formed between inner and outer pipe walls. The sealed space is divided into a plurality of sections in the circumferential direction, and the mud suction pipe is provided on the wall surface at the lower end of the mud suction pipe with an outlet for communicating the divided spaces with the suction passage of the mud suction pipe. The mud suction / removal device characterized in that each of the spaces between the pipe walls is connected to either an air feeding pipe or a high-pressure water pipe. 2) The mud as described in 1) above, wherein the thickness of the lower end of the mud suction pipe is tapered. Suction and removal device 3) The suction and removal of mud as described in 1) or 2), in which the divided space between the lower pipe walls of the mud suction pipe is alternately connected to the air supply pipe and the high-pressure water pipe along the circumferential direction. Device 4) Upper and lower cylindrical adapters are installed around the lower end of the mud suction pipe. The mud suction / removal device according to any one of the above 1) to 3) which is freely adjustable in position. 5) The midstream of the air supply pipe and the high-pressure water pipe is branched into a plurality of pipes through an annular pipe provided on the outer periphery of the mud suction pipe. Connected to the above space and using the same annular pipe as a work handle, 1) to
4) Any one of the mud suction / removal devices 6) An air supply pipe and a high-pressure water pipe are detachably connected to an air supply hose and a high-pressure water hose, respectively, and the pipe is opened to the atmosphere by removing the hose. 1) to 5) the suction / removal device for mud 7) The suction / removal device for mud removal according to any one of 1) to 5), wherein an air release valve is provided in the air supply pipe and the high-pressure water pipe.

[0006]

In the mud suction / removal device of the present invention configured as described above, the tip of the mud suction pipe is buried in the mud,
Compressed air or high-pressure water is sent from the air supply pipe / high-pressure water pipe into the space inside the double pipe structure of the mud suction pipe. Air and high-pressure water sent to the same space are ejected from the outlet at the lower end into the suction passage of the mud suction pipe. This causes a strong air flow / water flow in the mud suction pipe, thereby stirring the mud and reducing the shearing force between the stirred mud and the inner wall of the mud suction pipe, and the mud disperses and becomes lighter. The mud is strongly sucked and removed by the flow of compressed air and the suction pump. Also, by feeding air, it becomes possible to suck in only the water through the mud suction pipe. By providing the vertically adjustable adjuster at the lower end of the mud suction pipe, the suction position of the mud suction pipe can be adjusted and the suction position can be adjusted appropriately. Further, in the case where the working handle is an annular pipe in the middle of the air supply pipe / high pressure water pipe, the mud suction pipe can be easily moved up and down and horizontally moved using this annular pipe.

When the mud is soft and the lower part of the mud suction pipe is buried, the compressed air blowing hose and the high pressure water blowing hose are used by removing them from the air feeding pipe / high pressure water pipe in advance, or by opening the air release valve. By opening, the airtight space of the double pipe structure is opened to the atmosphere, and the inflow of air from the blowing port due to the suction of the suction pump is reduced, which greatly increases the suction force of the mud, The mud is sucked away with the flow. By adjusting the adaptor, suction removal efficiency can be improved according to the characteristics of any mud, and mud in the gutter of the road can be completely removed.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a front view of the embodiment, FIG. 2 is a plan view of the embodiment, FIG. 3 is an explanatory view of an annular pipe of the embodiment, FIG. 4 is a bottom view of a mud suction pipe of the embodiment, and FIG. 5 is C of FIG. -C sectional view, FIG. 6 is an explanatory view showing a mounting state of the adjusting screw of the slider of the embodiment, FIG. 7 is an A-A sectional view of FIG. 1, and FIG. 8 is B- of FIG.
B sectional view, FIG. 9 is an explanatory view showing the flow of compressed air and high-pressure water of the embodiment, FIG. 10 is an explanatory view showing the flow of compressed air and high-pressure water of the embodiment, and FIG. 11 is a mud suction pipe of the embodiment. Fig. 12 is a vertical cross-sectional view of the lower portion, Fig. 12 is an explanatory view of using compressed gas by engine exhaust gas for vehicle running, Fig. 13 is an explanatory view of using compressed air of an air brake, and Fig. 14 is a high-pressure water using device for a road cleaning vehicle / sprinkler vehicle. FIG. 15 is an explanatory view showing the use of compressed air, and FIG. 15 is an explanatory view showing the atmosphere release valve of the mud suction pipe of the present invention. Figure 1
In Nos. 2 and 3, the lower portion of the cylindrical mud suction pipe 1 having an inner diameter of 114 mm has a double pipe structure of an inner pipe 3 and an outer pipe 4, and the pipe end is closed by an inwardly inclined blade mouth, and the thickness of the lower end of the pipe is Is tapered. Further, the sealed internal space of the double pipe is divided into four chamber spaces 1a, 1b, 1c and 1d by four partition walls 1e. The spaces 1a and 1c are connected to the air supply pipe 6, and the rooms 1b and 1d are connected to the high-pressure water pipe 7. A space 1 is formed approximately at the center of the blade 5 at the tip of the double pipe structure.
Four elongated outlets 2a, 2b, 2c2d communicating with a, 1b, 1c, 1d are provided. Since the blade opening 5 is at an angle of 60 ° with respect to the cross section, the air outlets 2a, 2b, 2c, 2
d is 30 ° downward with respect to the cross section in the air outlet direction. The four outlets are provided with two outlets 2a and 2c for compressed air and two outlets 2b and 2d for high-pressure water, which are alternately provided. The outlets 2a, 2b, 2c, 2d have a groove width of about 1
mm, the length is about 70 mm, and compressed air or high-pressure water is jetted by the compressed air blowing air supply pipe 6 and the high-pressure water pipe 7.

When the lower end of the mud suction pipe 1 is placed in mud and compressed air is sent from the air supply pipe 6 and high pressure water is sent from the high pressure water pipe 7, the compressed air passes through the air supply pipe 6 and is a lower section of the double pipe structure. Is sent to the created spaces 1a and 1c, and blows out from the outlets 2a and 2c of the cut 5 of the space, sends an air flow into the suction passage of the mud suction pipe 1, weakens the adhesive force of the mud, and sucks the mud. Shearing with the inner wall of the passage (inner wall of the inner pipe 3) is facilitated, and a force for stirring the mud in the suction passage and raising it together with the air flow is generated. At the same time, the high-pressure water flows into the spaces 2b and 2d defined through the high-pressure water pipe 7, and is ejected from the outlets 2b and 2d of the cut 5 into the suction passage to well stir the mud and suck the mud. Separated from the inner wall of the passage, the mud is efficiently sucked together with the suction force of the mud suction pipe 1. This works even when the lower end of the mud suction pipe is completely buried in the mud, or even in the mud with water accumulated above it, and even in these conditions, the mud can be well sucked and eliminated.

The compressed air and high-pressure water distributors shown in FIGS. 3, 7 and 8 will be described. The air supply pipes 6 are alternately provided in the four spaces 1a, 1b, 1c and 1d provided at the tip of the mud suction pipe 1. The high-pressure water pipe 7 supplies compressed air and high-pressure water, but if there are four pipes, the suction hose 8 of the vacuum pump
When attaching and detaching the mud suction pipe 1, it is difficult to attach and detach, and since the annular pipe 9 that serves as an operating handle becomes difficult to handle, two annular pipes 9 provided on the outer periphery of the mud suction pipe 1 are used. The air supply pipe 6 and the high-pressure water pipe 7 are branched into two pipes, respectively, and four pipes are provided below the mud suction pipe 1 for compressed air and high-pressure water. The space 1 below the mud suction pipe 1 has a double pipe structure.
a, 1b, 1c, 1d.

A hole 12 is formed at all joints between the air supply pipe (inner diameter 10 mm) 6 and the scraping pipe (inner diameter 20 mm) 11 of the annular pipe 9 of the upper handle. The joints of the strained pipes 11 of the respective annular pipes 9 and 10 serving as the upper and lower handles are perforated through one hole 12 and the holes 12 are penetrated, and the holes 12 are the annular pipe 9 of the upper handle and the annular pipe 10 of the lower handle. Cross at.

To explain the mode, the compressed air flowing in from the air supply pipe 6 passes through a passage passing through the straining pipe 11 of the annular pipe 9 serving as the upper handle, and two directions above and below the straining pipe 11 of the annular pipe 10 serving as the lower handle. Through the hole 12 provided by joining the blower pipe 11 and the annular pipe 10 serving as the lower handle, and passing through the annular pipe 10 serving as the lower handle. , Through the hole 12 provided by joining the straining tube 11 on the opposite side and the annular tube 10 serving as the lower stage handle, and through the hole 12 provided by joining the straining tube 11 into the air feeding pipe 6, and is distributed. on the other hand,
The high-pressure water that has flowed in from the high-pressure water pipe 7 is connected to the high-pressure water pipe 7 that is joined to the holes 12 provided to distribute the high-pressure water in the upper and lower sides of the ring-shaped pipe 11 that serves as the upper handle in two directions.
12 provided by joining the annular pipe 9 serving as the upper handle with the upper pipe
Passing through the circular tube 9 serving as the upper handle, passing through the hole 12 provided by joining the strained tube 11 on the opposite side and the annular tube 9 serving as the upper handle, and the hole 12 provided by being joined to the strained tube 11 Through the high pressure water pipe 7 to be distributed.

The mud suction pipe outlet position adjusting device will be described with reference to FIGS. 3, 4 and 5 in which a slidable type adjuster 14 for adjusting the position of the suction port is provided outside the lower end 13 of the mud suction pipe 1. is there. The adapter 14 is attached to the lower end 13.
The adjusting screw 15 for fixing the
By loosening and tightening the adjusting screw 15 of 1, the sliding adjustment is performed vertically and then fixed. Adjustment long groove 1 on the upper half of the adapter 14.
7 cutouts are provided for the mud suction pipe 1 and the adapter 14.
The adjustment long groove 17 is cut out to the upper part so that the above can be easily bonded.

The air supply means of the embodiment is shown in FIGS.
The compressed air, which is one of the vehicle exhaust engine exhaust gas utilization device and the compressed air utilization device for the air brake shown in FIG. 2, is attached and fixed to the compressed air supply pipe 6 via the air supply hose 18 (inner diameter 6 mm). Next, if necessary depending on the properties of the mud, a high pressure water utilization device for inflowing high pressure water (Fig. 14)
Then, the high-pressure water is attached and fixed to the high-pressure water pipe 7 via the high-pressure water hose 19. Finally, the suction hose 8 is attached and fixed to the vacuum blower suction hose attachment port of the mud suction pipe 1. It is explanatory drawing which shows the air supply means of FIG.
The exhaust gas of the engine 21 is exhausted from the exhaust pipe 22, but a part of the exhaust gas is branched and connected to the air supply hose 18 via the flow rate adjusting valve 23 to be sent to the air supply pipe 6. Further, FIG. 13 shows an example of using the air of the air brake. This is an example in which an air tank 24 for an air brake is connected to an air supply hose 18 via an air pipe 25 and a flow rate adjusting valve 26 in the middle thereof. FIG. 14 shows an example of high-pressure water supply means, which is a water tank 2.
The air of No. 7 is boosted by the high-pressure pump 28, and a part of the branch pipe 2
9 and is connected to the high pressure water hose 19 via the valve 30. The other is sent to the branch pipe 31 and used for the underdrain / ditch. The air supply means of the present invention is not limited to these.

Further, in this embodiment, the air supply and the supply of the high pressure water are stopped, the air supply hose 18 and the high pressure water hose 19 are removed from the air supply pipe 6 and the high pressure pipe 7, and the air supply pipe 6 and the high pressure pipe 7 are exposed to the atmosphere. When the mud is opened to the above, the air inflow phenomenon occurs from the outlets 2a, 2b, 2c, 2d by suction of the vacuum blower in the case of soft mud, and the mud can be sucked together with the air flow. In this case, mud can be sucked in without the need for an air supply / high pressure water supply device.
Instead of removing the hose as in the present embodiment, as shown in FIG. 15, the valve 20 attached to the air supply pipe 6 and the high pressure water pipe 7 may be opened and closed to open to the atmosphere.

[0016]

Since the present invention is constructed as described above, the following effects are produced. When compressed air is blown into the outlet installed near the tip of the mud suction pipe, an air flow is generated in the mud suction pipe, and the mud's adhesive force is reduced by the compressed air, resulting in shearing and disturbance of the mud. , It becomes dispersed and becomes lighter, and by operating the suction pump of the gutter cleaning vehicle, the mud is sucked by the synergistic action of the flow of compressed air and the air flow by the suction of the suction pump, regardless of the nature of the mud to be removed. It can be removed. Since the mud cannot be sufficiently sheared and disturbed only by compressed air when the mud is dried and consolidated, the suction removal efficiency can be improved by using high pressure water together or by using it alone.

Further, an adaptor, which is an air outlet position adjusting device, is attached to the tip of the mud suction pipe so that the air outlet position can be changed up and down according to the property and hardness of the mud. By this, if the mud is hard,
Since the penetration of the mud suction pipe into the mud becomes smaller, the position of the air outlet will be moved closer to the tip of the mud suction pipe to blow compressed air and blow high-pressure water to make the suction and removal of mud more efficient. .

When water is accumulated in the upper part of the mud accumulated in the gutter and the basin, the mud suction pipe can be buried in the bottom to suck and remove only the mud, which eliminates the need to remove the mud. .

Further, since the air constantly flows inside the mud suction pipe and the suction hose, the mud is disturbed and becomes a small lump, and the clogging of the mud suction pipe and the suction hose is eliminated so that the work is not interrupted.

A part of the air supply pipe / high pressure water pipe is formed as an annular pipe,
If it can be used as a handle, it facilitates vertical and horizontal movement and adjustment work of the mud suction removal device.

When the lower end of the mud suction and suction pipe is tapered, the mud is effectively excavated and agitated by making the blowing direction of the air / high-pressure water obliquely downward from the air outlet. Further, in the case where the atmosphere release valve is attached to the air supply pipe / high pressure water pipe, when the soft is mud, it is possible to suck the high pressure water air without pressure feeding.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment.

FIG. 2 is a plan view of the embodiment.

FIG. 3 is an explanatory diagram of an annular pipe according to an embodiment.

FIG. 4 is a bottom view of the mud suction pipe of the embodiment.

FIG. 5 is a sectional view taken along the line CC of FIG. 3;

FIG. 6 is an explanatory view showing an adjusting screw of a slider of the embodiment.

FIG. 7 is a sectional view taken along the line AA of FIG. 1;

8 is a sectional view taken along line BB of FIG.

FIG. 9 is an explanatory diagram showing flows of compressed air and high-pressure water according to the embodiment.

FIG. 10 is an explanatory diagram showing flows of compressed air and high-pressure water according to the embodiment.

FIG. 11 is a vertical cross-sectional view of the lower portion of the mud suction pipe of the example.

FIG. 12 is an explanatory view of using compressed gas by vehicle exhaust engine exhaust gas.

FIG. 13 is an explanatory diagram of using compressed air in an air brake.

FIG. 14 is an explanatory diagram of compressed air utilization of a high-pressure water utilization device of a road cleaning vehicle / sprinkler vehicle.

FIG. 15 is an explanatory view showing an atmosphere release valve of the mud suction pipe of the present invention.

[Explanation of symbols]

 1 Mud suction pipe 1a Space 1b Space 1c Space 1d Space 1e Partition wall 2a Air outlet 2b Air outlet 2c Air outlet 2d Air outlet 3 Inner pipe 4 Outer pipe 5 Blade mouth 6 Air supply pipe 7 High pressure water pipe 8 Suction hose 9 Ring pipe 10 Ring Pipe 11 Koshiko Pipe 12 Hole 13 Duct 14 Adapter 15 Adjuster adjustment screw 16 Bolt 17 Washer 18 Air supply hose 19 High pressure water hose 20 Valve

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takeshi Seguchi 1057 Sanda-dai Dai, Oita City, Oita Prefecture Construction Service Co., Ltd. Oita Branch Office (56) Reference JP-A-57-36234 (JP, A) JP-A-SHO 63-122826 (JP, A) Actually opened 54-105136 (JP, U)

Claims (7)

(57) [Claims] 1. A vertical mud suction pipe connected to a suction pump has a lower portion having a double pipe structure, and a sealed space formed between inner and outer pipe walls of the lower portion of the double pipe structure is circumferentially formed. A plurality of compartments, and on the wall surface at the lower end of the mud suction pipe, there is provided a blowout port that communicates each of the partitioned spaces with the suction passage of the mud suction pipe, and the above spaces between the mud suction pipe walls. Is connected to either an air supply pipe or a high-pressure water pipe. 2. The mud suction / removal device according to claim 1, wherein the mud suction pipe has a tapered thickness at its lower end. 3. The mud suction and removal device according to claim 1 or 2, wherein the divided spaces between the lower pipe walls of the mud suction pipe are alternately connected to the air supply pipe and the high-pressure water pipe along the circumferential direction. . 4. The mud suction / removal device according to claim 1, wherein a cylindrical adaptor is provided on the outer periphery of the lower end of the mud suction pipe so as to be vertically adjustable. 5. An air supply pipe and a high-pressure water pipe are branched into a plurality of pipes through an annular pipe provided on the outer periphery of the mud suction pipe and connected to the space, and the annular pipe is used as a work handle. Item 6. The mud suction / removal device according to any one of Items 1 to 4. 6. An air supply pipe and a high-pressure water pipe are detachably connected to an air supply hose and a high-pressure water hose, respectively, and the pipe line can be opened to the atmosphere by removing the hose. Mud suction removal device. 7. The mud suction / removal device according to claim 1, wherein the air supply pipe and the high-pressure water pipe are provided with an atmosphere opening valve.