JPH07305325A - Suspended matter removing device - Google Patents

Abstract

PURPOSE:To decrease cost by providing a weir arranged nearby the suspended matter intoducing port of a trough and moving up and down while setting a water level as a boundary, and a driving means feeding liquid to a liquid tank so as to generate descending force and moving the weir up and down. CONSTITUTION:Under the condition in which water in a liquid tank 26 is perfectly discharged, a weir 15 rises to the surface of the water by the pushing down force of a balancer 25 and the buoyancy of the weir 15. Next water is fed to the tank 26 through a feed hose 31, the tank 26 is pushed down, the weir 15 is also brought down a little deep below the water, and large scum S is introduced into a trough 3. Next, surplus water in the tank 26 is discharged through an overflow port 27. Then the tank 26 is lightened, the balancer 25 is a little brought down so as to raise the weir 15 a little, and medium and small scum S is introduced into the trough 3. Further when water feed is stopped, water is discharged from a minute discharge port 28, the tank 26 and the weir 25 rise so as to stop to introduce the scum S. Hereby, the construction can be simplified and easily executed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floating substance removing device which attracts and removes floating substances on the water surface in a sedimentation basin or the like and consequently contributes to promotion of water purification.

[0002]

2. Description of the Related Art In the first or final settling basin, suspended solids (scums) are accumulated on the surface of the water, which hinders purification treatment. Therefore, these suspended solids are sequentially removed.

[0003]

By the way, in the above-mentioned suspended matter removing devices, a horizontally long cylindrical pipe schema having an inlet port is rotatably installed in a sedimentation basin, and the schema is provided around an axis center. It was configured to swirl suspended matter together with water by rotating it in one direction, while obtaining a dammed state by rotating and returning in the opposite direction.

[0004] After that, the applicant proposed a unique suspended matter removing device. The device was equipped with a trough fixedly installed in the pond and a weir installed in the front side of the trough so as to be movable up and down, and the weir was set up to float in conjunction with a flight moving in the pond. It is a thing. According to this device,
Since it is a system that is linked to the flight, it is powerless in itself, and is effective in ensuring reliable operation.

However, this device is provided with a rotary shaft extending in the width direction of the sedimentation tank at the front position of the trough, and an arm is extended from this rotary shaft in the direction opposite to the trough to be lifted in contact with a moving flight. In addition to this, another arm is extended from the rotating shaft in the direction of the trough to press the weir.

Although this is a simple device, when it is implemented, not only the trough with a weir but also the rotary shaft with an arm needs to be designed, manufactured, transported, installed and adjusted. At the same time, it is necessary to attach a cam plate to the tip of the arm extending in the anti-trough direction, and adjust the cam plate by hitting it with the flight side roller. These things not only caused the cost increase but also complicated the construction.

[0007] Therefore, the present applicant has made diligent efforts to provide a simpler suspended matter removing device. The present invention has been made to solve the above-mentioned problems, and further simplification is achieved, cost can be reduced, and construction and adjustment are very simple, and reliable operation after installation can be ensured.
It is an object of the present invention to provide a suspended matter removing device in which smoothing is also achieved.

[0008]

In order to solve the above-mentioned problems, the invention according to claim 1 is such that at least one side thereof is used as an attraction port for floating matter and is opened lower than the water surface, and the inside of the floating matter and the swallowed water flows in. It is equipped with a fixed trough that serves as a passage, a weir that is arranged near the inlet of the trough and moves up and down with the water surface as a boundary, and a drive means that operates this weir in at least one direction up and down, and floats on the water surface. A device for collecting and removing suspended matter, wherein the drive means generates a descending force when liquid is supplied to operate the weir in at least one direction and at the same time, the liquid container is also capable of discharging liquid. It is characterized by having a space. The invention according to claim 2 is
The suspended matter removing apparatus according to claim 1, wherein the driving means comprises:
An arm that can swing up and down via a fulcrum, and a liquid tank that is provided in the arm to form a liquid storage space and presses down the weir by supplying liquid, and the weir,
It is hollow so that it can float itself. According to a third aspect of the present invention, in the floating substance removing apparatus according to the first aspect, the drive means is an arm that can be vertically swung via a fulcrum, and the arm is provided in the arm to form a liquid storage space inside. The weir is provided with a liquid tank that pushes down the weir by supplying liquid, and the weir is hollow, and one side thereof is a fulcrum side and the other side is vertically swingable. According to the invention described in claim 4, in the suspended matter removing device according to any one of claims 1 to 3, a liquid tank is configured inside or near the weir. According to a fifth aspect of the present invention, in the suspended matter removing device according to any of the first to fourth aspects, the means for discharging the liquid includes an upper overflow port and a lower minute discharge port. According to a sixth aspect of the present invention, in the suspended matter removing device according to any one of the first to fifth aspects, as a means for switching the supply / stop of the liquid, a flight type sludge attracting device circulated in a sedimentation basin is provided. An interlocking mechanism is configured. According to a seventh aspect of the present invention, in the suspended matter removing device according to any one of the first to sixth aspects, the inside of the liquid container space is divided into front and rear, and liquid is supplied to one of the spaces, and then the other space. It is designed to be guided to the space and discharged. According to the eighth aspect of the present invention, in the floating substance removing apparatus according to the fifth aspect, the upper overflow port is a stepped notch whose opening becomes narrower as it goes downward.

[0009]

[Function] A fixed trough having at least one side as an inlet for floating matter and opening lower than the water surface and an inside as an inflow passage for inflowing suspended matter and swallowed water, and a water surface arranged near the inlet of the trough A device for collecting and removing suspended matter floating on the water surface, comprising a weir that moves up and down at a boundary and a driving means that operates this weir in at least one direction up and down, wherein the driving means is supplied with a liquid. As a result, it is possible to generate a descending force to actuate the weir in at least one direction and to have a liquid storage space capable of discharging liquid, so that the weight of the supplied liquid is driven. The use of force eliminates the need for two rotary shafts with arms, which simplifies design, manufacture, transportation, installation, and adjustment, and also extends in the anti-trough direction as described above. Cover the tip of the arm. Attach the plate, without the need to adjust and contact between the rollers of the cam plate flight side, these things, along with the cost is down, construction is also very easy.

[0010]

The present invention will be described in detail below with reference to the illustrated embodiments. FIG. 1 shows an embodiment of the present invention. In this embodiment, 1 is the side wall of the sedimentation pond, which is near the end of the sedimentation pond, and the same side wall 1 is one of the opposite sides. A communication passage (communication pipe) 2 is formed on both the side walls 1, 1 by a chipping operation, and both side walls 1, 1.
A long trough 3 is fixedly installed between the two via mounting brackets such as angles (not shown).

As shown in the drawing, the trough 3 has a U-shape with its opening facing upward, and has a bottom wall 4, a front wall 5,
A rear wall 6 is provided, and a front projecting piece 7 that horizontally projects forward is provided on the upper end of the front wall 5, and a rear projecting piece 8 is also provided on the rear wall 6. The front projecting piece 7 is set lower than the water surface 10, and the rear projecting piece 8 is set higher than the water surface 10.

End plates 12 having openings 11 are integrally fixed to both ends of the trough 3, and the trough 3 is fixed so that the openings 11 of the end plates 12 coincide with the communication passages 2. This fixing is performed by the end plate on the communication passage 2 side and the trough 3
This is done by bolting the end plate 12 on the side. A long rubber front seal 13 is fixed on the front projection 7, and the front seal 13 comes into contact with the front seal 13 to prevent water from entering from the front. Thus, the rotary shaft 14 is provided. Both ends of the rotating shaft 14 are rotatably supported by bearings fixed to the back surface (not shown) of the end plate 12.

A hollow weir (float) 15 is fixed to the rotary shaft 14 so as to integrally rotate and swing up and down with the water surface 10 as a boundary. Side plates 16 are fixed to both ends of the weir 15, and one of the side plates 16 shown in the figure has a shaft 17 oriented in the longitudinal direction of the trough 3.
Is attached. A rod 19 oriented in the up-down direction is attached to the shaft 17 via a lower joint 18.

A shaft 21 projects from the inner surface of one of the pair of end plates 12 facing each other, which is shown in FIG.
The boss 22 attached via the front arm 23
The rear arm 24 is swingably extended. Rear arm 24
A balancer 25 is attached to the front arm 23 such that the balancer 25 can be moved forward and backward, and a liquid tank 26, which is a water tank, is attached to an end of the front arm 23.

The liquid tank 26 is a hollow cylinder, and at its end,
The overflow port 27 opens in a half-moon shape in the upper part, and a vertical slit-shaped fine discharge port 28 is formed in the lower part so as to be continuous with the overflow port 27. The overflow port 27 is for draining the excess water first when the supplied water is excessive, and the fine discharge port 28 is also used.
Is for gradually discharging the remaining water by a fixed amount to reduce the pushing down moment.

In the trough 3, a water supply pipe 30 that also leads to the inside of a trough provided in another sedimentation pond is passed.
Water is supplied from the pipe 30 into the liquid tank 26 through the supply hose 31. Also, the front arm 23
A bracket 32 is projectingly provided in the middle of the above, and the rod 19 is vertically adjustable via a shaft 33 attached thereto.

An upper joint 36 is attached around the shaft 33, and a pair of upper and lower adjusting seats 37 and 38 are screwed to the rod 19 so as to be vertically adjustable through a hole formed in the joint 36. The adjusting seats 37 and 38 are provided on the rod 19
Since it can be adjusted up and down independently with respect to each other, by freely adjusting the interval between these seats 37, 38 and their respective heights, etc., the timing of starting the pushing down of the weir 15 and its The strokes can be adjusted to suit the settling basin. Further, it is possible to deal with the fluctuation of the water level by the play interval between the seats 37 and 38.

Further, a suspension rod 34 is provided below the liquid tank 26, and a water level following type lower limit float 35 is suspended via the rod 34. The float 35 descends together with the liquid tank 26 to the water surface 10
When it comes to the top, it floats on the water surface 10 and regulates the further downward movement. The float 35 follows the fluctuation of the water level, and when the water level is low, allows the liquid tank 26 to descend until it lowers, and when the water level is high, does not lower the liquid tank 26 too much. Therefore, the lowering limit of the weir 15 is also defined by the water level following operation of the float 35.

The shaft 21 may be attached at another place, for example, on the rear projecting piece 8. Further, the weir 15 is a vertically swinging type, but may be a vertically moving type. Further, the trough 3 may have another geometric shape such as a round shape. In the above embodiment, the trough 3 is attached to the side wall 1 by an angle or the like, but the trough 3 may be attached to the end of the short pipe inserted into the communication passage 2. Further, in the above-described embodiment, the driving means such as the liquid tank 26 and the arm 23 is provided on one side of the trough 3, but they may be provided on both ends of the trough 3 or only on the center of the trough 3. Further, in the above-described embodiment, the water is supplied to the liquid tank 26 through the dedicated pipe. However, for example, as shown in FIG. 2, the rotary joint 39 is connected to the shaft 21 to supply the water from the supply hose 31. Alternatively, a method may be adopted in which water can be supplied into the liquid tank 26 through the cylindrical front arm 23. In addition, in the above-described embodiment, the weir 15 is configured to levitate in a hollow shape.
For example, it is a plate-shaped one and has no levitating ability.
It may be configured to return by.

The operation of this suspended matter removing device will be described below.
FIG. 1 shows a state in which the water in the liquid tank 26 is completely discharged and the weir 15 floats on the water surface by the pushing down force of the balancer 25 and the floating force of the weir 15. A rotating water wheel is arranged in an overflow weir provided in the sedimentation basin so that the rotating force of the rotating water wheel is used as a pumping force to cause water to flow through the water supply pipe 30 and unnecessary water is removed by a relief valve.

This supply water is supplied to the water tank 26 through the water supply pipe 30 and the supply hose 31. This water is stopped and supplied by a valve (not shown). At the time of supply, the water tank 26 is supplied. The water guided to the lower side pushes down the liquid tank 26 to lower the weir 15 slightly below the water surface, and also attracts the large scum S into the trough 3. Excess water in the liquid tank 26 is discharged through the overflow port 27. As a result, the liquid tank 26 becomes slightly lighter, the balancer 25 is lowered a little, and the weir 15 floats slightly below the surface of the water.
Are attracted into the trough 3 with water.

These scum S ...
It flows through the inside, passes through the next trough and the following trough, and is discharged through the water collection pit. This attraction is
After the valve is closed, the liquid tank 26 continues to float while water continues to be gradually discharged from the minute discharge port 28. At this time, buoyancy acts on the weir 15, and the balancer 25 also acts as a levitation force by its weight, so that the weir 15 levitates and the attraction of the scum S is stopped. The opening and closing of the valve is performed by, for example, flight interlocking described later. Scum and water from the upstream side flow into the communication passage 2 in FIG.

Further, as shown in FIG. 2, front and rear partition plates 40 are provided upright in the liquid tank 26, and water from the front arm 23 enters the rear liquid storage space as shown by an arrow. ,
There is a case where a certain amount is accumulated and the weight thereof causes the front arm 23 to lower, so that the front arm 23 flows from the same space over the partition plate 40 and flows into the front space.

In this way, when water flows into the space on the front side, the arm length from the base end of the arm 23 becomes long, so that the lowering moment increases and the weir 15 is pushed down greatly, thereby attracting a large scum S. Will be able to. After that, the water is removed from the slight discharge port of the liquid tank 26, so that the weir 15 tends to float and attracts the scum S of the normal size. Furthermore, the weir 15 floats. For this reason, the weir 15 temporarily drops slightly below the surface of the water, then drops significantly, and then rises a little further. The partition plates may be arranged two or more in front and in back. The remaining water is discharged from each drainage port.

Further, in FIG. 2, water remaining in the space on the arm 23 side is removed from a drain port (not shown). further,
The lower limit float 35 attached to the liquid tank 26 may open the fine discharge port 41 opened at the bottom surface by landing with water.

Further, as shown in FIG. 3, the pump 43 may guide the water to the water supply pipe 30, but the water may be guided from another liquid tank 45 supplied from the pump 44. In this case, a drive turbine 47 is provided in the overflow weir 46,
Water may be supplied by driving the pump 46 with the rotational force of the water turbine 47.

Further, as shown in FIG. 4, the liquid tank 26
A single-stage partition plate 49 is arranged inside the partition plate 49 so that the inflowing water can pass over the partition plate 49 and at the same time, the water can be guided from the through hole 50 to the front space. The water in the space behind is
The water that has been excluded from the side holes 51 and has flowed into the front space is discharged through an overflow port 52 whose opening degree is gradually reduced downward, and a fine discharge port with an adjusting plate 53. Internal water is gradually discharged through 54.

Next, another embodiment will be described with reference to FIGS. This embodiment is for a settling basin of two ponds with one pond, and in each waterway of the settling pond, as shown in FIG. 5 and FIG. The device 60 is configured. This point is the same in the above-described embodiment (FIGS. 1 to 4). The device 60 may be a three-axis drive type.

In the scraping device 60, a pair of bottom guide rails 61 are laid on the bottom wall, and a flight 62 is driven by a chain 63 on the bottom guide rails 61. Exercise along 65. The flight 62 reaches the lower guide rail 61 again after being guided along the relay guide rail 66. The flight 62 scrapes sludge that has settled at the bottom toward the pit side (not shown), and scum floating on the water surface 65 toward the suspended matter removing device (described later) according to the present invention.

On one side of the flight 62, a horizontal shaft is provided on the back surface thereof via a bracket, and a resin roller 67, which is a free-running kicking means, is provided around the tip of the horizontal shaft from the flight 62 side. It is provided so as to project in one direction. This roller 67 may be attached to any one, every few, or all of the multiple flights 62 desired. The roller 67 kicks the drive lever 70 shown in FIG.

The lever 70 is swingably supported by horizontal shafts 71 respectively provided at opposite positions of the sedimentation basin and freely returned by a spring or the like. The lever 70 swings together with the roller 67. With wire rope 72
Or the rod can be pulled. Another response lever 73 is swingably coupled to each end of the wire rope 72.

The response lever 73 interlocks with the switching valve 74, that is, when the drive lever 70 is kicked by the roller 67, the valve 74 gradually opens to full opening, and when the drive lever 70 returns, the valve 74 is opened. 74 closes. By the valve opening, the water supplied by the method described in the above embodiment is guided to the suspended solid removing device through the supply pipe 75 and the flexible through pipe 76 connected thereto. The subsequent route will be described later.

On the other hand, the suspended matter removing device is constructed as follows. That is, reference numerals 80 shown in FIGS. 7 and 8 denote opposite side walls of the settling tank, each of which has an end placket 8
1 is fixed, and a central bracket 83 is also fixed to the front surface of a column 82 provided in the width of the sedimentation pond so as to extend forward. An end support frame 85 is attached to the end bracket 81 via two front and rear adjusters 84.
Is attached.

As shown in FIGS. 6 to 10, the end support frame 85 has a substantially U-shaped receiving portion 85a and the receiving portion 85a.
And a substantially U-shaped inner flange 85b fixed to the outer circumference of the inner end of the
Bolts 85c are projectingly provided at two upper and lower positions on the outer surface of the. Further, two seal set plates 85d are longitudinally fixed to the inner surface of the flange 85b so as to be separated from each other in the front-rear direction.

An adjusting plate 86 with a long hole is attached via the bolt 85c, and a bearing 87 is attached via a bolt 86a provided on the plate 86.
Therefore, the bearing 87 can be moved and adjusted obliquely in the front-rear direction. A side seal 88 made of sponge or rubber is mounted between the two seal set plates 85d so as to protrude inward.

As shown in FIGS. 9 and 10, the bolt 8 is provided on the outer surface of the left end of the end frame 85 in FIG.
The inflow restricting plate 90 having the base portion attached to the bolt 89a is fixed to the lid plate 89 including 9a so that the tip of the inflow regulating plate 90 contacts the side wall 80, while the right side of FIG. As shown in FIG. 8, an outer end flange 91 is attached, and is bolted to a flange of a communication pipe 92 which is inserted and supported in a hanging hole of the side wall 80.

As shown in FIGS. 7, 8, 11, and 12, intermediate support frames 95, 95, which are bilaterally symmetrical, are joined to the central bracket 83 back to back by bolts 96, and an adjuster 84 at the bottom is provided. The height is adjustable through the. The intermediate support frame 95 includes a substantially U-shaped receiving portion 95a and a coupling flange 95b that is fixed in a protruding shape so as to cover the entire outer circumference of one end of the receiving portion 95a. Bolt 9
5c are projected at two places, upper and lower. Further, a seal set plate 95 consisting of two sheets is provided on one side surface of the flange 95b.
d is separated in the front-rear direction and fixed vertically.

An adjusting plate 86 having a long hole is attached via the bolt 95c, and a bearing 87 is attached via a bolt 96a provided on the plate 86.
Therefore, the bearing 87 can be moved and adjusted obliquely in the front-rear direction. A side seal 88 made of sponge or rubber is mounted between the two seal set plates 95d so as to protrude inward. Then, the connecting flanges 95b are connected by bolts 96.

Reference numeral 98 in FIGS. 5 to 12 is a trough, and the troughs 98 are arranged in a pair on the left and right in this settling basin. The trough 98 includes a bottom plate portion 98a and a front plate portion 98.
b, a rear plate portion 98c, and an upper flange portion 98d, and a front plate portion 98c having a cross section of a right-angled side and an obliquely rising shape is provided in the front portion thereof, and the upper end of the front plate portion 98c is more than the water surface 65. It is set to be 10 cm below. One end of each of these troughs 98 is fitted into the receiving portions 85a and 95a from above and fixed by bolts 99.

Here, the left and right troughs 98, 98
Are both shown horizontally in FIG. 8, but in reality,
The whole is adjusted so that the bottom plate portion 98a is slightly lowered to the right from the left to the right side, so that scum and water flow to the right direction and easily flow into the scum pit 100 in FIG. The adjustment is performed by adjusting the height of the adjuster 84 or adjusting the play by the elongated hole of the adjusting plate 86.

As shown in FIGS. 6 and 11, on the front side of the trough 98, an upper plate 102 and a lower plate 103 are attached with bolts 104 so as to sandwich the front plate portion 98b, and they are opposed to each other. A long front seal 105 made of an elastic material such as rubber or sponge is sandwiched and fixed so as to extend between the side seals 88, 88. On the front side of the seal 105, a hollow and flat weir 107 having a round base and a square tip is attached so as to be vertically swingable.

Side plates 108 are attached to both ends of the weir 107 so that the weir 107 is completely closed, and as shown in FIGS.
A pair of rotating shafts 109 are fixed to each trough so as to be inserted into the ends of the troughs. This rotating shaft 109 is
The inner end is fixed by the welded portion 111 via the seat 110, while the other end of the shaft is projected from the side plate 108 and is rotatably supported by the bearing 87.

On the outer surface of each side plate 108, fan-shaped seal side plates 113 are provided at both ends of the trough 98 so that the bolts 11 are formed.
4, the outer surface of the seal side plate 113 is in contact with the side surface seals 88 to prevent scum and water from entering from the front.

On the other hand, on the upper side of each end support frame 85, FIG.
As shown in FIGS. 10 to 10, a U-shaped mount 120 is bolted, and a pair of left and right support plates 121 are attached so as to project upward through the mount 120. Support plate 1
As shown in FIG.
A rotary cylinder 124 serving as a fulcrum fixed between the rear arm 123 and the rear arm 123 is inserted, and one end of the cylinder 124 is closed by a lid 125, while the other end is provided with a water pipe 126 to which the pipe 76 is connected. It is inserted in a water-sealed manner. The water pipe 126 is supported by a holding plate 127.

On the rear arm 123, a balancer 129 can be moved back and forth by a moving bolt 131 and fixed by a stop bolt 130. While the rear arm 123 and the rotary cylinder 124 are in a partition state,
The front arm 122 is in fluid communication with the rotary cylinder 124. As shown in FIG. 9, a bracket 132 projects from the upper middle portion of the front arm 122, and an upper joint 133 is rotatably attached by the bracket 132. On the other hand, as shown in FIG. 13, a lower joint 134 is attached to the side plate 108.

Reference numeral 135 denotes an interlocking rod, which is provided with an adjusting nut 139 at the upper end of the screw shaft. A tubular body 137 is fixed to the lower end of the interlocking rod 135 by a bolt 136, and the tubular body 137 of the same is mounted. The vertical axis 138 inserted through the lower end is welded to the lower joint 134, while being rotatable relative to the tubular body 137.

On the outer periphery of the upper part of the interlocking rod 135, the upper seat 1
40 and a lower seat 141 are attached by a nut 142 so as to be vertically adjustable. The upper seat 140 and the lower seat 141 have the nut 1
By turning 42, not only the vertical distance but also the height of each can be adjusted individually, and after the adjustment, it is fixed by the pin 143 so as not to rotate relative to each other. Therefore, by adjusting the positions of the upper and lower seats 140 and 141, the upper joint 133 may move to the respective seats 140 and 141.
It is possible to change the timing of hitting 41, which can operate the weir 107 in a suitable state according to the conditions of the sedimentation basin.

As shown in FIG. 6, a plurality of through pipes 150 are arranged at the front end of the front arm 122, and the insertion shaft 151 is inserted through one of the pipes 150. A liquid tank 152 is attached. On the upper surface of the liquid tank 152, a hole 154 through which water passes through a water outlet 153 formed in the front arm 122 is formed. This liquid tank 152 is as shown in FIG. 14 when viewed from the direction of the arrow X in FIG. 5, and on the surface thereof, there is provided an adjustable plate 157 that is vertically movable and has an overflow port 155 opened upward and a rectangular cutout 156. The outflow timing can be adjusted. Further, a vertical slit-shaped fine discharge port 158 is formed in the lower part of the same surface. An adjustment plate 159 for controlling the discharge flow rate is also attached to the minute discharge port 158 so as to be vertically adjustable.

Another example of the drainage means of the liquid tank 152 is shown in FIG.
5 to 17 are shown. In the example of FIG. 15, the overflow port 1
60 is formed in a stepwise manner so as to become a narrower mouth downward. A fine discharge port 161 is formed at the bottom of the overflow port 160. In the example of FIG. 16, the overflow port 162 is V-shaped, and the minute discharge port 163 is formed below the overflow port 162. In the example of FIG. 17, an arc-shaped overflow port 164 is formed, and a lower portion thereof is a fine discharge port 165. Reference numeral 166 is a rotating adjusting plate.

A lower limit float 167 made of foamed resin is detachably attached to the lower end of the liquid tank 152.

The suspended matter removing device having the above-described structure operates as follows. In the state shown in FIG. 5, the roller 67 is the drive lever 7
This is the state before kicking 0. During this time, the liquid tank 152 is empty, and the weir 107 is made to have its front end surface at a substantially water surface level by the force of the balancer 129 and the levitation force of the weir 107, etc. Regulated. The switching valve 74 is closed, and the roller 67 kicks the lever 70, thereby actuating the response lever 73 via the wire rope 72 and actuating the valve 74 in the opening direction.

Now, the front arm 1 is fed through the supply pipe 75 and the pipe 76, the water pipe 126 and the rotary cylinder 124.
22 and then into the liquid tank 152 through the water outlet 153 and the hole 154. As the water flows into the liquid tank 152, the weir 107 is moved through the interlocking rod 135.
Is greatly pressed down and even large scum is drawn into the trough 98 with water. The lowering of the liquid tank 152 is limited to a constant value by the lower limit float 167 landing.
When excess water is removed through the overflow port 155 and the cutout port 156 shown in FIG. 14, the weir 107 floats slightly to allow normal scum swallowing. During that time, water is discharged from the minute discharge port 158, and when this discharge progresses, the weir 107 floats and floats on the water surface, and the inflow of scum is blocked.

The scum and swallowed water flow from one trough 98 into the adjacent trough 98 as shown by the arrow in FIG. 12, flow into the scum pit 100 through the communication pipe 92 in FIG. 8, and are guided to the next treatment facility.

Another embodiment will be described. In FIG. 18, the water supply to the liquid tank 152 is not the flight interlocking system shown in FIG. 5, but the water supply switching system. That is, a switching valve 171 is provided on the main water supply route 170, an arm 172 is attached to its valve shaft, a balancer 173 is provided at the rear end of the arm 172, and a valve switching tank 174 is provided at the front end. The tank 174 has a through hole 177 that branches from the main water supply route 170 and receives water from a branch route 176 provided with an opening / closing valve 175, and has a diagonal plate-shaped partition plate 1 inside.
78 is provided at a desired height, and a drain slit 180 with an adjusting plate 179 is formed on the side wall of the tank.

As shown by the solid line in the figure, the tank 174 is emptied by the complete hawaii, whereby the balancer 173 operates and the arm 172 returns to the horizontal state and maintains that state. In this state, the valve 171 is closed and the valve 175 is opened, so that water does not flow to the main water supply route 170 but flows to the branch route 176. This allows the tank 174
Water gradually accumulates in the space in front of the partition plate 178 and becomes heavier, and the tank 174 side lowers as shown by an imaginary line, and the water inside flows into the space in front of the partition plate 178.

At this point, the valve 174 is opened and water is supplied into the liquid tank 152 through the main water supply route 170 to be lowered, so that the weir 107 is submerged. When the arm 172 moves down constantly, this is detected by the limit switch 181 and the valve 175 is closed. When the water is discharged from the slit 180, the tank 174 becomes lighter, the arm 172 is returned to the horizontal state, and at the same time, the valve 171 is closed. As a result, the supply of water into the tank 152 is stopped, and the tank 152 returns as soon as it becomes empty.
When the arm 172 becomes horizontal, the valve 175 opens and water is supplied into the tank 174 through the branch route 176. The above operation is repeated. The presence of the partition plate 178 makes it possible to increase the lowering moment due to the weight of water by exceeding it, so that the valve 171 can be stably and reliably provided.
Can be interlocked. The partition plate 178 may be omitted.

FIG. 19 shows another embodiment. In this embodiment, the pair of left and right side plates 108 is extended to a longer length, and a cylindrical (or square tubular or gutter-shaped) liquid tank 183 is provided between the extending left and right sides to supply water to the inside thereof. This allows the weir 107 to sink due to its weight, and discharges water through the drainage port 184 opened at the end of the weir 1.
07 is configured to float. And the side plate 10
The float 185 is attached with the 8 or the weir I07 as the attachment side to define the descending limit. A cover 186 may be provided on the upper side of the device as shown in the figure to improve the appearance.

20 to 23 show another embodiment of the drive system for the weir 107. In the embodiment shown in FIG. 20, a balancer 191 is provided at the front end of the arm 190 and a liquid tank 19 is provided at the rear end.
2, the weir 107 is settled by the balancer 191 when the liquid tank 192 is empty, while the weir 107 is floated by its weight when water is supplied to the liquid tank 192. In this case, the weir 107 is plate-shaped, but may be hollow.

In the embodiment shown in FIG. 21, a liquid tank 192 is provided at the front end of the arm 190, and a rear end nibalancer 191 is provided, and an operating arm 193 is extended from the weir 107 into the trough 98 to extend from the fulcrum of the arm 190. It is connected to the rear side so that it can be interlocked. In the case of the embodiment, the liquid tank 1
When water is supplied to 92 and goes down, the weir 107 sinks via the operating arm 193, and when the liquid tank 192 becomes empty, the weir 107 floats up by the balancer 191 and the like. Although it may be adopted in the above-mentioned embodiment and the embodiment described later, the trough 98 is provided at the bottom of the liquid tank 192 as shown by a phantom line.
It may be provided with a scum moving surface 194 that is inclined in the direction of.

In the embodiment shown in FIG. 22, the liquid tanks 195 are provided at both the front and rear ends of the arm 190.
In 95, water is supplied alternately, so
This causes the weir 107 to float. The liquid tank 195
The shape of may be spherical or three-dimensional elliptical as shown. A scum plate 196 may be attached to the bottom of the liquid tank 195.

In the embodiment shown in FIG. 23, a liquid tank 197 is formed on the weir 107 itself, and water is supplied from the upper portion of the liquid tank 197 and discharged through the bottom portion of the weir 107. The weir 107 is a heavy load.

[0062]

Since the present invention is configured as described above, it is possible to provide a suspended matter removing device which achieves further simplification.

[Brief description of drawings]

FIG. 1 is a perspective view of a suspended matter removing apparatus according to an embodiment of the present invention.

FIG. 2 is a partially cutaway side view showing a specific structural example of a liquid tank.

FIG. 3 is a schematic diagram showing various types of water supply means.

FIG. 4 is a perspective view showing another embodiment of the liquid tank.

FIG. 5 is a vertical cross-sectional view of a suspended matter removing apparatus showing another embodiment.

FIG. 6 is an enlarged side sectional view of a main part of the suspended matter removing apparatus according to the embodiment.

FIG. 7 is a plan view of the suspended matter removing apparatus according to the embodiment.

FIG. 8 is a vertical cross-sectional front view of the suspended matter removing apparatus of the embodiment.

9 is a cross-sectional view taken along the line IK-IK of FIG. 7.

10 is a cross-sectional view taken along line XX of FIG.

11 is a sectional view taken along line XI-XI of FIG.

12 is a plan view of FIG.

FIG. 13 is a sectional view showing an interlocking rod of a weir and an adjusting mechanism thereof.

14 is an arrow view from the X direction of FIG.

FIG. 15 is a front view showing the drainage means of the liquid tank.

FIG. 16 is a front view showing another embodiment of the drainage means of the liquid tank.

FIG. 17 is a front view showing another embodiment of the drainage means of the liquid tank.

FIG. 18 is a side view showing another embodiment of the means for switching the water supply to the liquid tank.

FIG. 19 is a perspective view showing another configuration example of the liquid tank.

FIG. 20 is a side view showing another embodiment of the weir floating / sinking method.

FIG. 21 is a side view showing another embodiment of the weir floating / sinking system.

FIG. 22 is a side view showing another embodiment of the weir floating / sinking system.

FIG. 23 is a side view showing another embodiment of the weir floating / sinking method.

[Explanation of symbols]

3 ... Trough, 10 ... Water surface, 15 ... Weir, 23, 24 ... Arm, 26 ... Liquid tank, 27 ... Overflow port, 28 ... Slight drainage port.

Claims (8)

[Claims] 1. A fixed trough having at least one side as an inlet for floating matter and opening lower than the water surface, and having an inside as an inflow passage for inflowing suspended matter and swallowed water, and a trough disposed near the inlet of the trough. A device for collecting and removing suspended matter floating on the water surface, comprising a weir that moves up and down with the water surface as a boundary and a driving means that operates this weir in at least one direction up and down. A suspended matter removing device, characterized in that it is provided with a liquid containing space in which a downward force is generated when the liquid is supplied to operate the weir in at least one direction and liquid can be discharged. 2. The suspended matter removing apparatus according to claim 1, wherein the driving means is an arm that can be vertically swung via a fulcrum, and a liquid supply space is provided inside the arm to form a liquid storage space. And a liquid tank that pushes down the weir by means of the above-mentioned weir, and the weir is a floating substance removing device in which the weir is hollow and capable of floating itself. 3. The suspended solid removing apparatus according to claim 1, wherein the driving means is an arm that can be vertically swung via a fulcrum, and a liquid supply space is formed by forming an arm provided in the arm. And a liquid tank that pushes down the weir by means of the above, and the weir is hollow, and one side of the weir is a fulcrum side and the other side is vertically swingable. 4. The suspended matter removing apparatus according to claim 1, wherein a liquid tank is formed inside or near the weir. 5. The suspended matter removing apparatus according to claim 1, wherein the means for discharging the liquid has an upper overflow port and a lower minute discharge port. 6. The floating substance removing apparatus according to claim 1, wherein the mechanism interlocking with a flight type sludge attracting device circulated in a sedimentation basin serves as means for switching supply / stop of the liquid. The suspended matter removal device that is configured. 7. The suspended solid removing apparatus according to claim 1, wherein the inside of the liquid container space is partitioned into front and rear, and the liquid is supplied to one of the spaces and then to the other space. A suspended matter removal device designed to be guided and discharged. 8. The suspended matter removing apparatus according to claim 5, wherein the upper overflow port is a stepped notch whose opening narrows downward.