JP2007330954A - Device for collecting and removing precipitate over a long range of distance without mudding water - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To collect and remove precipitate over a long range of distance without mudding water in the vicinity of the precipitate by minimizing rotary and sliding parts in the water when the precipitate on the bottom of an objective area is collected and removed. <P>SOLUTION: A cover channel of upside-down concave cross section shape groove object formed of rubber is beforehand laid over a predetermined distance in the bottom of a dam lake, river, water tank and the like. The tip side of the cover channel is risen and opened by a height position at which the tip side is not immersed in the precipitate, and the base side thereof is connected to communicate with the suction of a sludge pump. The sludge pump is operated with the precipitate deposited in the vicinity of the cover channel or with the cover channel immersed therein, the cover channel is gradually lifted from the tip with a winch installed above the tip of the cover channel, the lower surface of the cover channel is released to make an opening, water and sludge absorption is performed, and the precipitate over the long range of distance is collected and removed in a form that an opening position is sequentially moved to the base side. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an apparatus for recovering and removing deposits deposited and deposited on the bottom of lakes, rivers, water tanks, etc., and is suitable for recovering and removing deposits in a line.

There are a variety of methods for collecting and removing sediment that has suspended sediment in the water, but there is a method to collect the sediment so that it does not turbidity by avoiding resuspension of the sediment. However, the method of collecting long distances in a line is very limited.
The conventional method for collecting sediment in the water tank in a line is generally a screw conveyor system or a chain system, and a mud pump discharges it outside the tank. In the conventional method, there are many mechanical rotating parts and sliding parts in the water, and when using sand and silt in sewage and bad water, it needs corrosion resistance and wear resistance. Not only is it a large-scale machine facility using high-grade materials, but maintenance underwater is very difficult.

  In the following patent document of the applicant's application, although it is greatly improved, a structure called “underwater waterway” or “covered waterway” using high-quality materials must be installed at the bottom of the water, and a flat bottom surface When installed in a water tank, there is a disadvantage that the water channel height cannot be removed.

  JP2000-121000   JP 2000-345607 A   JP 2003-93805 A

  The problem to be solved by the present invention is that when the sediment at the bottom of the water is to be recovered and removed, the sediment is liable to re-float and the surrounding water is easily polluted. In addition to being difficult to maintain, sewage and bad water are common, and high-grade materials are necessary and expensive.

In the present invention, the “cover water channel” 2 configured to be able to bend in the vertical direction with the grooved body such as the concave cross section, the U-shaped cross section, or the noncircular cross section turned upside down and opened downward, Preliminarily lay on the bottom of the water where sediment is likely to accumulate, and the top end of the cover channel 2 is opened to communicate with a chimney-shaped water absorption cylinder 3 opened at a height not buried in the sediment, and the base end is suctioned. The mud pumps 11 and 21 are connected to or connected to suction equipment such as a delivery pipe using the water level difference.
Further, an opening f is formed at the lower end of the water absorption tube 3 or the lower end of the tip end portion of the covering water channel 2 so as to narrow about half the height of the covering water channel 2.

  Furthermore, the cover channel 2 is pulled up by a wire 7 that pulls only the tip in a small-scale facility (hereinafter referred to as “tip-hanging”), and in a large-scale facility, the tip and several points are pulled along the way. Using the wire 7, the pulley 5, and the pulley 6 (hereinafter referred to as “multi-point suspension”), the wire 7 hangs down.

  In the case of multipoint suspension, for example, the suspension angle θ formed by the wire 7 and the horizontal line at the position of the suspension pulley 5 is set so that the traction force of the wire necessary for each suspension pulley 5 on the covering water channel 2 side becomes larger toward the base end side. It can be adjusted so that it becomes smaller toward the base end side, or the suspension span is lengthened toward the base end side and a weight is added to the suspension position.

  Further, the structure of the cover channel 2 main body of the present invention is mainly made of rubber that easily deforms and expands. However, the cover channel 2 is not configured to withstand the suction pressure of the mud pump when the bottom water flows. Instead, it can be reinforced with a single steel plate that matches the shape of the inner surface, or by including a steel wire or a net-like reinforcing material.

When it is installed in a river or waterway with strong currents or when it is covered with sediment that has accumulated, it is necessary to make it a heavy waterway, and it may be necessary to reduce the weight.
In such a case, a steel plate, a non-ferrous metal plate, or a single grooved body made of synthetic resin, etc., which can be bent vertically in a chain shape, is connected, and the outer surface is covered with rubber to provide a sealing property. It can be made in a raised waterway.

Even if the covering water channel 2 is completely buried, the device according to the present invention absorbs water from the water inlet b at the upper end of the water absorbing cylinder 3 at the end and starts the pump operation normally if the mud pump 11 is operated. The removal of the deposit around the opening f provided at the lower end of the water absorption cylinder 3 and the upper part of the periphery is started.
Next, the winch 8 is driven and the wire 7 is slowly pulled to open the bottom of the top of the covering water channel 2, and the sediment removal operation proceeds in such a manner that the suction port gradually changes in the proximal direction.

  Even if the sediment deposited above the cover water channel 2 collapses greatly during the removal operation, the cover water channel 2 has a shape surrounded by the upper side, so the flow channel a in the cover water channel 2 is always Secured and stable removal work can be continued.

The traction force of the wire 7 in the multipoint suspended waterway 2 is the same traction force acting on all the suspended pulleys in the covered waterway 2 if the resistance of the pulley or the like is ignored. Due to the difference, the tip end side is pulled up preferentially, and even if it is towing with one wire, it is possible to suck the mud in such a manner that the opening position moves sequentially from the tip end side toward the base end.
Further, even when the wire 7 is loosened, the opened opening can be closed from the base end side, and re-sucking can be performed while moving the suction position in the opposite direction. The fallen sediment from the side wall surface can be cleaned and sucked.

  Covered water channel 2 made of all rubber is not only easy to make chemical and wear-resistant, but also when the vertical opening that occurs when opening and closing is open, the lower open end is inward and outward. It is easy to deform and bend, and it is possible to make a cover channel with a simple structure.

  In order to absorb mud without mechanical excavation, scraping, stirring, etc., the number of rotating parts and sliding parts is small, and it is easy to make it corrosion resistant. A simple configuration that can work with a single wire operation for long distances of mud removal.

FIG. 1 is an assumption diagram of the operating state of Example 1, and the left half shows a state where the covering water channel 2 is pulled up and precipitates are removed, and the imaginary line in the figure shows the covering water channel 2 reaching the bottom. Indicates the state.
The right half shows a state where the cover channel 2 is buried in the sediment c.
A suspension pulley 5 having a predetermined interval is provided at the center of the upper portion of the rubber cover water channel 2, and a suspension beam 4 is bridged along the water channel above the cover water channel 2, and a suspension pulley 6 is provided below. Arrange.
The suspension pulley 5 and the suspension pulley 6 are pulled by a winch 8 provided above the starting end side of the covering water channel 2 and covered with a wire 7 whose end portion is fixed to the base end side tank wall so as to sew between the upper and lower suspension pulleys. The water channel 2 is raised and lowered.

  As shown in FIG. 5, the suspension angle θ on the left and right of the suspension pulley 5 disposed on the upper part of the cover channel 2 is the same suspension angle at the time of landing, for example, θ0 = θ1, θ2 = θ3, θ4 = θ5. (The same applies hereinafter) and θ0 <θ2 <θ4 <(the same applies hereinafter).

  In the case of the present embodiment, the water absorption tube 3 is made separately from the cover water channel 2, and is attached to and fixed to the start side tank wall, and the water channel portion provided at the lower end of the water absorption tube 3 when the top of the cover water channel 2 is bottomed. The opening f is closed at the lower end of the water supply cylinder 3.

  In the case of the multipoint suspension of this embodiment, the pulley and the wire are the driving parts in the water, but the suspension beam 4, the pulley 5, and the pulley 6 are arranged at a high position on the water surface, and the pulley 5 is covered with the water channel. By hanging the gap with a rod or wire, the rotating parts in the water can be wiped out.

  FIG. 2: shows AA sectional drawing of Example 1, the groove row | line | column of the left end shows a removal completion state, the 2nd groove row | line | column is the open state which lifted the covering water channel 2, and the 3rd and 4th groove | channels A row | line | column shows the assumption figure of the state where the covering water channel 2 was buried in the sediment c.

Example 2 which shows a side cross-sectional view in FIG. 6 is an example of a tip suspension with a relatively short mud collection distance, and is an assumed operational state as in Example 1, and the left half is the end of mud removal. The right half shows a state in which sediment is deposited and the cover channel 2 is buried.
In the case of the second embodiment, the water absorption cylinder 3 is connected and integrated with the start end of the covering water channel 2 and is pulled up and down by the winch 8 together with the covering water channel 2.

The device of the present invention, which can be configured in a very simple manner, can eliminate any submersible rotating parts and sliding parts. Moreover, the suction flow of the pump is used for sucking the precipitate, and the collapse of the precipitate during the work is performed. Contamination from time to time can be minimized because the collapse direction and the flow direction of the suction water coincide with each other.
Also, the power for recovering and removing precipitates over a long distance range is only a small power that pulls the wire at a slow speed.

  In addition to industrial and water and sewage water treatment facilities, the recovery and removal of sediment and silt in dam lakes, rivers, intake channels, drainage channels, irrigation channels, etc. can be performed environmentally and economically.

It is side sectional drawing along the flow line direction of Example 1 of multipoint suspension. It is AA sectional drawing of FIG. In the figure, (a) is a detailed cross-sectional view around the cover water channel 2, and (b) shows a detailed cross-section of the cover water channel 2. In the figure, (c) is a detailed view around the tip of the cover water channel 2 in FIG. 1, and (d) shows a cross section taken along the line BB of the detailed view (c). It is sectional drawing of the same site | part as FIG. 1, and shows the change of the hanging angle in the state which the covering water channel 2 settled over the full length. The sectional side view of Example 2 is shown. FIG. 6 is a cross-sectional view taken along the line C-C in FIG. 6, in which c indicates an assumed deposition line of precipitates, and d indicates an assumed residual deposition line that cannot be excluded, or a tank wall surface formed in a hollow shape.

Explanation of symbols

1 Settling tank (water tank)
2 Cover water channel 3 Water absorption cylinder 4 Suspension beam 5 Suspension pulley 6 disposed in the cover water channel 2 Suspension pulley 7 disposed in the suspension beam 4 Wire 8 Winch 9 Base plate 10 facing the cover water channel 2 and buried in the bottom of the tank Electric valve 11 Mud pump 12 Suction pipe 13 Discharge pipe 21 Mud pump (submersible pump)
22 Guard a Water channel b in the cover water channel 2 Water inlet c provided at the upper end of the water absorption cylinder 3 Presumed sedimentation line d of sediment Presumed residual sedimentation line of sediment that cannot be excluded, or tank wall e formed in a hollow shape The water channel portion f provided on the lower side of the water absorption tube 3 in accordance with the water channel 2 The opening θ below the water absorption tube 3 or the lower side of the tip of the cover water channel 2 θ The angle θ 0 formed between the wire 7 pulled at the position of the suspension pulley and the horizontal line Hanging angle of the pulley 5 / most proximal end side θ1 Hanging angle of the hanging pulley 5 θ2 Hanging angle of the hanging pulley 5 θ3 Hanging angle of the hanging pulley 5 θ4 Hanging angle of the hanging pulley 5 θ5 Hanging angle of the hanging pulley 5 θ6 of the hanging pulley 5 Hanging angle / omitted in the drawing θ7 Hanging angle of the hanging pulley 5 / omitted in the drawing θ8 Hanging angle of the hanging pulley 5 θ9 Hanging angle of the hanging pulley 5 θ10 Hanging angle of the hanging pulley 5 / omitted in the drawing θ11 Hanging angle of the hanging pulley 5 / Cutting edge / omitted in the figure

Claims (4)

A cover channel that is configured to be able to bend in the vertical direction by inverting a groove-like body having a concave shape, U-shape, or a notch shape, and opening the lower part upside down. Arranged to form a water passage inside.
The top end side of the covering water channel is opened at a height that is not buried in the sediment, and the base end side is connected to a mud absorbing facility such as a pump.
Furthermore, the apparatus which collect | recovers and removes the deposit | precipitation which hang | suspended only the front-end | tip of this covering water channel, or the front-end | tip and the middle with a wire etc. so that raising and lowering was possible, and was able to open the lower surface of a covering water channel.   At the height that does not bury in the sediment, cover the water pipe with the water inlet opening separately from the water channel, and place it on the bottom of the water or the tank wall. 2. An apparatus for recovering and removing the precipitate of claim 1 which is in communication with each other.   A pulling wire suspension beam and upper and lower suspension pulleys that hang up and down the tip and midway of the cover waterway are arranged above and in the air, and between the lower suspension pulley and the cover waterway via wires and rods. An apparatus for recovering and removing the precipitate according to claim 1 or 2, wherein the precipitate is drooped.   In each suspended pulley on the covered water channel side of the pulling wire that is hung up and down directly or through the rod or wire etc. at least at the top and middle of the covered water channel, The wire suspension angle should be the same, and the tip suspension pulley should have a larger suspension angle than the base end suspension pulley, or the base end suspension interval should be increased. 4. The apparatus for recovering and removing the deposits according to claim 1, 2 and 3, wherein a traction force is required to be as large as that of the base-side suspension pulley by adding a weight or the like.

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