JP2021100761A - Transfer apparatus - Google Patents

Abstract

To provide a transfer device capable of transferring objects floating on the water surface by reducing an amount of fluid to be discharged and by using a simple structure.SOLUTION: A transfer apparatus includes a pipe-shaped flow channel forming member 5 which forms a flow channel S, has a suction port 5a which connects to the flow channel S and is submerged in water, and extends substantially parallel to the water surface WL, and a discharge port 7a which discharges water into the flow channel S in the axial direction of the flow channel forming member 5, and the transfer apparatus is placed in water where the peripheral region R1 around the flow channel forming member 5 and other regions R2 are connected. The suction port 5a is configured to face upward and extends in the direction of the extension of the flow channel forming member 5, and functions as an opening to suck scum Sc suspended on the water surface WL into the flow channel S as water is discharged into the flow channel S. For the flow channel S, the flow channel S functions as a path through which the scum Sc sucked into the flow channel S moves downstream in the water discharge direction by the water being discharged into the flow channel S.SELECTED DRAWING: Figure 10

Description

The present invention relates to a transfer device that transfers an object to be transferred suspended on a water surface.

A transfer device for transferring an object to be transferred such as a scum floating on the water surface toward a scum pit or the like is provided in a headrace or a settling basin of a sewage treatment plant (see, for example, Patent Document 1).

FIG. 13 is a schematic view of the transfer device described in Patent Document 1 as viewed from above. The transfer device 6 described in Patent Document 1 includes a plurality of spray nozzles 61 provided about 100 mm to 200 mm above the water surface of the sewage in the headrace 9 in which the sewage flows from the left side to the right side of the drawing. ing. These plurality of spray nozzles 61 are arranged at predetermined intervals in the width direction of the headrace 9 (vertical direction in FIG. 13), and are directed in the transfer direction of the scum Sc (object to be transferred) (from the left side to the right side in FIG. 13). A plurality of rows are also arranged at predetermined intervals in the direction). In the transfer device 6 described in Patent Document 1, pressure water and air are discharged from a plurality of spray nozzles 61 substantially horizontally in a transfer direction toward a scum pit or the like (not shown). As a result, an air flow or an air flow toward the scum pit is generated on the water surface, and the scum floating on the water surface is transferred toward the scum pit or the like by the air flow or the like.

Japanese Unexamined Patent Publication No. 7-30383

However, in the transfer device 6 described in Patent Document 1, the pressure water or the like discharged from the spray nozzle 61 is diffused, and it is difficult to generate an air flow or the like capable of transferring the transferred object over a wide range on the water surface. .. Therefore, in FIG. 13, as shown by the white outline surrounded by the alternate long and short dash line, the range in which the pressure water or the like discharged from the spray nozzle 61 can exert its effect is shown by one spray nozzle 61 to be transferred (scum Sc). ) Can be transferred on the surface of the water in a limited range. As a result, a large number of spray nozzles 61 are arranged at intervals on the water surface where the scum Sc floats (in the figure, the scum floating on the water surface is marked with Sc0). In addition, a large number of pipes 62 for supplying pressure water or the like to these many spray nozzles 61 are also required, which makes the device large-scale. In addition, a large amount of pressure water or the like to be discharged from a large number of spray nozzles 61 is also required. Further, in the mode in which the air is discharged from the spray nozzle 61, the scum Sc may be dried and solidified by the discharged air. Since the scum Sc solidified in this way becomes difficult to move on the water surface, there is also a problem that more air must be discharged.

In view of the above circumstances, it is an object of the present invention to provide a transfer device capable of suppressing the amount of fluid to be discharged and transferring an object to be transferred suspended on the water surface by a simple structure.

The transfer device of the present invention for solving the above object forms a flow path, and is provided with a suction port connected to the flow path and submerged in water, and has a pipe shape extending substantially parallel to the water surface. Underwater that includes a flow path forming member and a discharge port that discharges fluid in the flow path in the axial direction of the flow path forming member, and a peripheral region around the flow path forming member and another region are connected to each other. It is a transfer device placed in
The suction port is configured to face upward, extends in the extending direction of the flow path forming member, and discharges the transferred object suspended on the water surface into the flow path to cause the flow. It functions as an opening that sucks into the road,
The flow path functions as a path in which the transferred object sucked into the flow path moves toward the downstream side in the discharge direction of the fluid when the fluid is discharged into the flow path. It is characterized by that.

Here, the flow path forming member may be one in which the suction port opens from a position lower than the water surface toward the water surface and is located at a depth within 200 mm from the water surface. The flow path forming member may have a suction port that opens in a direction other than the water surface. Further, when the height of the water surface changes, the flow path forming member may move in the vertical direction and the height of the suction port may be changed. Further, the flow path may be narrower as the portion on the suction port side approaches the suction port. Further, the flow path forming member may have a shape in which a part of the cylindrical body is cut out. Further, the discharge port may be a perfect circle, a flat shape, or a plurality of discharge ports may be provided at intervals in the discharge direction. Further, the fluid discharged from the discharge port may be a liquid, a gas, or a gas-liquid mixture. Further, the discharge port may discharge a fluid of 300 liters or more and 3000 liters or less per minute at a pressure of 0.3 MPa or less.

According to the transfer device of the present invention, when a fluid is discharged from the discharge port into the flow path, the transferred object that is drawn into the flow of the discharged fluid and floats on the water surface is sucked. It is sucked into the flow path from the mouth. Further, in the flow path, the sucked object to be transferred moves toward the downstream side in the discharge direction by the flow of water generated by the fluid. As described above, the flow of water once generated in the flow path is far more than the air flow or the blowing flow in the transfer device described in Patent Document 1 because the flow path is surrounded by the flow path forming member. It is hard to attenuate and can transfer the object to be transferred over a long distance. Further, a flow in the direction of being sucked into the suction port is generated on the water surface, and the transferred material suspended on the water surface can be sucked into the flow path in a wide range.

Furthermore, due to the flow on the water surface in the direction of being sucked into the suction port, the region from which the object to be transferred has been removed may extend on the water surface in the transfer direction. Hereinafter, the area on the water surface from which the transferred object has been removed may be referred to as a water surface removal area. When the received sewage flows in the transfer direction, for example, when the transfer device is provided in a headrace or the like, the flow of the received sewage also causes a flow in the transfer direction on the water surface, and this flow causes a scum (object to be transferred). ) Flows through the removal area on the water surface in the transfer direction as well. Further, when the scum flowing through the removal area on the water surface comes into contact with the scum floating on the water surface in a state of being gathered, a part of the scum collapses, and the collapsed portion is sucked from the suction port and enters the flow path. Or move in the transfer direction through the removal area of the water surface. As a result, the scum floating on the surface of the water can be efficiently transferred while being gradually broken.

As a result, the number of the discharge port and the number of pipes for supplying the fluid to the discharge port can be reduced, and a simple structure can be adopted. Further, the amount of fluid discharged from the discharge port can be suppressed. As described above, since it is sufficient that the water flows once in the flow path, the pressure of the fluid discharged from the discharge port may be sufficient even if it is a weak pressure of 0.1 MPa or less. ..

Further, the transfer device of the present invention for solving the above object forms a flow path, and is provided with a suction port connected to the flow path and submerged in water, and extends substantially parallel to the water surface. Shaped flow path forming member and
A discharge port for discharging a fluid in the flow path in the axial direction of the flow path forming member, and a discharge port.
In water, the peripheral region around the flow path forming member and other regions are partitioned so that the peripheral region is inside, and an inflow port connected to the peripheral region is provided and extends substantially parallel to the water surface. Equipped with the existing pipe-shaped partition member
The inflow port is configured to face upward, and functions as an opening for allowing an object to be transferred suspended on the water surface to flow into the peripheral region by discharging a fluid into the flow path.
The suction port opens downward in the peripheral region, and when the fluid is discharged into the flow path, the suction port serves as an opening for sucking the transferred object that has flowed into the peripheral region into the flow path. It works and
The flow path functions as a path in which the transferred object sucked into the flow path moves toward the downstream side in the discharge direction of the fluid when the fluid is discharged into the flow path. It is characterized by that.

Here, the partition member may be one in which the inflow port opens from a position lower than the water surface toward the water surface and is located at a depth within 200 mm from the water surface. Further, when the height of the water surface changes, the partition member may move in the vertical direction and the height of the suction port may be changed. Further, the peripheral region may be narrower as the portion on the inflow port side approaches the inflow port. Further, the partition member may have a curved portion at the upper end portion that penetrates toward the center side in the width direction. Further, in the flow path forming member, the suction port is opened in the peripheral region, and the upper end portion is located at substantially the same height as the inflow port, is located below the inflow port, or It may be any of those located above the inflow port. Further, the partition member may have a shape in which the upper end portion of the cylindrical body is cut out. Further, the partition member and the flow path forming member may be formed of a curved surface having a continuous inner peripheral surface from the partition member to the flow path forming member. Further, the flow path forming member has a part shared with a part of the partition member in a state of being separated from the other end side of the one end side and the other end side of the partition member in the width direction. It may be connected to one end side.

If the embodiment including the partition member is adopted, since the peripheral region is partitioned from other regions by the partition member in water, the inflow of the transferred object from the inflow port into the peripheral region flows. The object to be transferred, which is promoted and floats on the water surface, can be efficiently flowed into the peripheral region. Further, by partitioning the peripheral region from the other region by the partition member, the flow of water from the inflow port to the suction port is not obstructed, and the transferred object flowing into the peripheral region is not obstructed. Flows through the peripheral region and is smoothly sucked from the suction port.

Further, when the received water flows in the transfer direction, for example, when the transfer device is provided in a headrace or the like, the scum (object to be transferred) flows in the transfer direction in the removal area on the water surface due to the flow of the received water. .. Further, when the scum flowing through the removal area on the water surface comes into contact with the scum that stays on the water surface in a cohesive state, a part of the scum collapses, and the collapsed part flows into the peripheral area from the inflow port. , It is sucked from the suction port and moves in the flow path, or flows through the removal area on the water surface and moves in the transfer direction. As a result, the scum that remains in a state of being collected on the water surface can be efficiently transferred while being gradually broken down.

Further, in the transfer device of the present invention, the flow path forming member may have a flat shape in which the dimension in the width direction orthogonal to the discharge direction of the fluid in the horizontal plane is longer than the dimension in the height direction. ..

As described above, if the flat flow path forming member is adopted, it becomes easy to widen the suction port in the width direction. If the suction port is widened in the width direction, the transferred object suspended in a wider range of the water surface can be sucked into the flow path. Further, by forming the flow path forming member into a flat shape, the entire device can be made thin, and can be suitably used for a shallow water channel or the like. Further, by forming the flow path forming member into a flat shape, it becomes difficult to obstruct the flow of sewage or the like in the headrace or the like provided with the transfer device, and it is possible to reduce the resistance to the flow of the sewage or the like. ..

Further, in the transfer device of the present invention, the partition member may have a flat shape in which the dimension in the width direction orthogonal to the discharge direction of the fluid in the horizontal plane is longer than the dimension in the height direction.

By adopting the partition member having a flat shape as described above, it becomes easy to widen the inflow port in the width direction. If the inflow port is widened in the width direction, the transferred object suspended in a wider range of the water surface can flow into the peripheral region. Further, by making the partition member flat, the entire device can be made thin, and it can be suitably used for a shallow water channel or the like. Further, by making the partition member flat, it becomes difficult to obstruct the flow of sewage or the like in the headrace or the like provided with the transfer device, and it is possible to reduce the resistance to the flow of the sewage or the like.

According to the present invention, it is possible to provide a transfer device capable of suppressing the amount of fluid to be discharged and transferring an object to be transferred suspended on the water surface by a simple structure.

It is a top view from the top view of the headrace provided with the transfer device of one embodiment of the present invention. FIG. 5 is a cross-sectional view taken along the line AA of the headrace shown in FIG. FIG. 5 is a cross-sectional view taken along the line BB of the transfer device shown in FIG. (A) is a diagram showing the transfer device of the first modification, and (b) is a diagram showing the transfer device of the second modification. (A) is a diagram showing a transfer device of a third modification, and (b) is a diagram showing a transfer device of a fourth modification. (A) is a diagram showing the transfer device of the fifth modification, and (b) is a diagram showing the transfer device of the sixth modification. (A) is a figure which shows the transfer device of 7th modification, and (b) is a figure which shows the transfer device of 8th modification. It is a figure which shows the transfer device of the 9th modification. It is a figure which shows the transfer apparatus of the tenth modification. It is a figure which shows the transfer apparatus of the eleventh modification. It is a schematic block diagram of the inverted siphon structure provided with the transfer device of the 2nd Embodiment of this invention. FIG. 11 is a cross-sectional view taken along the line CC of the inverted siphon shown in FIG. It is a schematic diagram of the appearance of the transfer device described in Patent Document 1 as viewed from above.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The transfer device of the present invention can be adopted in various facilities and structures for transferring objects to be transferred floating on the water surface. For example, a headrace or a settling basin in a sewage treatment plant, or a sewage pipe inverted structure, etc. Can be suitably applied to. In the present embodiment, a transfer device provided in the headrace of the first settling basin and the final settling basin and for transferring the scum floating on the water surface will be described as an example. That is, in the present embodiment, the scum corresponds to an example of the object to be transferred. The headrace is a channel that distributes sewage received from sand basins, aeration tanks, etc. in a sewage treatment plant to a plurality of sedimentation basins, and scum floating on the water surface is collected in a scum pit.

FIG. 1 is a plan view of a headrace provided with a transfer device according to an embodiment of the present invention as viewed from above, and FIG. 2 is a cross-sectional view taken along the line AA of the headrace shown in FIG. Note that FIG. 1 also shows a part of a plurality of settling basins P to which sewage is distributed from the headrace 9.

As shown in FIG. 1, the headrace 9 is a rectangular waterway that is long in the left-right direction when viewed from above, and has a water flow unit 91 that receives sewage sent from a sand basin or the like (not shown) and the water flow unit 91. Has a scum pit 92 partitioned by a blocking wall 93. The flowing water unit 91 receives sewage from the left side of the drawing, and the received sewage flows toward the scum pit 92 provided on the right side of the drawing and is blocked by the blocking wall 93. Further, a plurality of settling basins P arranged side by side in the direction in which sewage flows through the flowing water portion 91 are connected to the flowing water portion 91 via a communication port 94. The sewage flowing through the flowing water section 91 is distributed by flowing into each settling basin P from each communication port 94, and the sewage flowing into each settling basin P flows toward the lower part of the figure.

As shown in FIGS. 1 and 2, the water flow unit 91 is provided with a transfer device 1. Before driving the transfer device 1, scum Sc is suspended in the entire water surface WL (see FIG. 2) of the sewage W of the flowing water unit 91. In FIGS. 1 and 2, as will be described in detail later, the scum Sc is transferred to the right side of the drawing by discharging water from the discharge port 7a of the transfer device 1, and is collected in the vicinity of the blocking wall 93. It shows the situation. That is, the scum Sc is transferred in the longitudinal direction of the flowing water portion 91, and in FIGS. 1 and 2, the direction from the left side to the right side corresponds to the discharge direction in which the fluid is discharged, and the transfer direction in which the scum Sc is transferred. Is also equivalent to. The lateral direction of the flowing water portion 91, that is, the direction orthogonal to the discharge direction in the horizontal plane may be hereinafter referred to as a width direction.

An opening 93a communicating with the scum pit 92 is formed in the blocking wall 93, and a gate 931 that closes the opening 93a is provided. The gate 931 can open and close the opening 93a by sliding in the vertical direction, for example. When the gate 931 is slid so that the upper end thereof is located below the water surface WL of the sewage W blocked by the blocking wall 93, the scum Sc collected in the vicinity of the blocking wall 93 becomes sewage. At the same time, it passes over the gate 931 from the opening 93a and flows into the scum pit 92. The scum collected in the scum pit 92 is sent to a scum processing machine (not shown) to perform a predetermined treatment such as dehydration treatment.

Subsequently, the transfer device 1 will be described in detail with reference to FIGS. 1 to 3.

FIG. 3 is a cross-sectional view taken along the line BB of the transfer device 1 shown in FIG. In FIG. 3, the direction toward the front side of the paper surface is the discharge direction, and the left-right method is the width direction.

As shown in FIGS. 1 to 3, the transfer device 1 includes a partition member 3, a flow path forming member 5, and a discharge member 7. As shown in FIGS. 1 and 2, the partition member 3 extends in the discharge direction in the flowing water portion 91, and the total length is formed to be slightly shorter than the length in the longitudinal direction of the flowing water portion 91. .. Further, the partition member 3 extends parallel to or substantially parallel to the discharge direction as shown in FIG. 1, and extends horizontally or substantially horizontally as shown in FIG. As shown in FIG. 3, the partition member 3 has a peripheral region R1 around the flow path forming member 5 and another region R2 in the sewage W flowing through the flowing water portion 91 so that the peripheral region R1 is inside. It is connected to the surrounding area R1 and has an inflow port 3a that is submerged in the sewage W. The partition member 3 of the present embodiment has an arcuate cross-section with approximately 1/3 of the upper portion of a stainless steel cylinder having a diameter of 300 mm or more and 400 mm or less cut out, and the cutout portion is directed upward. An open inflow port 3a is formed. The opening length L3 in the width direction of the inflow port 3a (see FIG. 4A) is set to 275 mm or more and 375 mm or less. Further, the partition member 3 has a curved portion 31 that enters the central side in the width direction at the upper end portion, and the peripheral region R1 becomes narrower as the portion on the inflow port 3a side approaches the inflow port 3a. ..

As shown in FIGS. 1 and 2, the flow path forming member 5 also extends in the discharge direction in the water flowing portion 91 like the partition member 3, and its total length is substantially the same as that of the partition member 3. It is formed in the direction. Further, the flow path forming member 5 also extends parallel to or substantially parallel to the discharge direction as shown in FIG. 1, and extends horizontally or substantially horizontally as shown in FIG. As shown in FIG. 3, the flow path forming member 5 forms a flow path S, and partitions the flow path S from the peripheral region R1. Further, the flow path forming member 5 has a suction port 5a which is connected to the flow path S and is submerged in the sewage W. The flow path forming member 5 of the present embodiment has an arcuate cross section in which approximately 1/6 of the lower portion of a stainless steel cylinder having a diameter of 150 mm or more and 200 mm or less is cut out, and is formed downward in the cutout portion. A suction port 5a that opens toward the surface is formed. The flow path forming member 5 is attached to the partition member 3 by an attachment member (not shown) so that the suction port 5a opens in the peripheral region R1 and the upper end portion 51 is substantially the same height as the inflow port 3a. There is. In the present embodiment, the radial center of the flow path forming member 5 (indicated conceptually with a reference numeral O in the figure) is aligned with the radial center of the partition member 3. Therefore, the radial distance Di (about 75 mm in this embodiment) between the partition member 3 and the flow path forming member 5 is substantially the same at any location.

The discharge member 7 has a water supply pipe 70 connected to the rear end portion and has a discharge port 7a at the tip end portion thereof. As shown in FIG. 2, the discharge port 7a flows from the upstream side in the discharge direction. It is inserted in the forming member 5 (flow path S). The water supplied from the water supply pipe 70 to the discharge member 7 is discharged horizontally or substantially horizontally from the discharge port 7a (see the solid right-pointing arrow in FIG. 2). In the present embodiment, the discharge pressure of the water discharged from the discharge port 7a is set to 0.3 MPa or less. As will be described in detail later, since it is sufficient that the water flows once in the flow path S, the pressure of the water discharged from the discharge port 7a may be sufficient even if it is 0.1 MPa or less. .. The flow rate of water discharged from the discharge port 7a is adjusted to 300 liters or more and 3000 liters or less per minute. Here, as the water discharged from the discharge port 7a, sewage or tap water received at the sewage treatment plant may be used. Further, a gas other than water or a fluid such as a gas-liquid mixture may be discharged from the discharge port 7a.

The discharge member 7 of the present embodiment has a long-hole-shaped discharge port 7a formed at the tip of a round pipe-shaped water supply pipe by crushing the tip portion in a flat shape. If the embodiment in which the round pipe is crushed into a flat shape to form the discharge port 7a in this way is adopted, the production thereof becomes easy. Further, as shown in FIG. 3, the opening length L1 in the width direction of the discharge port 7a is set longer than the opening length L2 in the width direction of the suction port 5a. Specifically, in the present embodiment, the opening length L2 in the width direction of the suction port 5a is about 100 mm, the opening length L1 in the width direction of the discharge port 7a is about 120 mm, and the height H1 of the discharge port 7a is about 20 mm. Is. By forming the discharge port 7a in such a flat shape, it is possible to secure a wider range in which the flow velocity is increased than in the case of a perfect circle shape. In some cases, it is preferable to adopt the perfect circular discharge port 7a by using the round pipe-shaped water supply pipe as it is without crushing the tip portion of the round pipe-shaped water supply pipe.

Here, since the height of the water surface WL of the flowing water portion 91 fluctuates depending on the amount of sewage received from the sand basin and the like, the height position where the transfer device 1 is provided is set in consideration of the fluctuation of the height of the water surface WL. To. Specifically, even when the height of the water surface WL of the water flowing portion 91 fluctuates, the inflow port 3a of the partition member 3 is at a position lower than the water surface WL, and the depth Dp1 from the water surface WL is large. Within 200 mm, the center of the discharge port 7a in the height direction has a depth Dp2 from the water surface WL of 50 mm or more and 300 mm or less, and the suction port 5a of the flow path forming member 5 has a depth Dp3 from the water surface WL of 100 mm or more and 400 mm or less. It is set to fit in. Further, the inflow port 3a of the partition member 3 is located above the lower end portion of the opening 93a in the blocking wall 93 shown by the alternate long and short dash line in FIG.

The position of the transfer device 1 may be fixed, but as shown by the double-headed arrows in FIGS. 2 and 3, the transfer device 1 may be fixed with the entire transfer device 1 or the partition member 3 according to the fluctuation of the height of the water surface WL. One of the flow path forming members 5 may be moved in the vertical direction. By doing so, the positions of the inflow port 3a and the suction port 5a can be made to follow the fluctuation of the height of the water surface WL, and can be maintained at a constant depth from the water surface WL. The discharge port 7a may be moved in the vertical direction in accordance with the vertical movement of the flow path forming member 5, or the discharge port 7a is fixed and only the flow path forming member 5 is moved in the vertical direction. May be. Further, the transfer device 1 may be fixed, and the amount of sewage received by the flowing water unit 91 may be controlled so that the positions of the inflow port 3a and the suction port 5a are maintained at a constant depth from the water surface WL.

In the transfer device 1 configured as described above, as shown in FIGS. 1 and 2, the scum Sc is transferred by discharging water from the discharge port 7a. Specifically, when water is discharged from the discharge port 7a into the flow path S of the flow path forming member 5, it is drawn into the flow of the discharged water and is drawn from the suction port 5a as shown in FIG. A flow of water in the direction of being sucked into the flow path S is generated. As a result, a flow of water flowing from the inflow port 3a into the peripheral region R1 is generated, and a flow of water toward the suction port 5a is generated in the peripheral region R1. As a result, the water surface WL of the water flow portion 91 has a flow in the direction of gathering at the inflow port 3a of the partition member 3 (the water surface WL near the inflow port 3a has a flow in the direction toward the inflow port 3a, and the flow is generated in another place. The flow that occurs when water supplements this) occurs.

In FIGS. 1 and 2, the flow of the scum Sc is schematically shown, and the scum floating on the surface of the water is marked with the symbol Sc0 and thinly shaded, and separated from the scum group Sc0. The scum Sc is surrounded by a alternate long and short dash line and has a dark shading. The scum that floats as a whole over the entire water surface WL (see FIGS. 2 and 3) of the flowing water portion 91 is partially collapsed and small due to the flow in the direction of gathering at the inflow port 3a generated on the water surface. It becomes a mass scum Sc and flows into the peripheral region R1 from the inflow port 3a. By repeating this, as shown in FIG. 1, a region from which the scum is removed (removal region on the water surface) is generated on the water surface WL along the extending direction of the partition member 3, that is, the transfer direction. Further, the scum Sc separated from the scum group Sc0 flows in the removal direction on the water surface in the transfer direction and gathers in the vicinity of the blocking wall 93. Further, in the process of flowing through the removal region on the water surface, the scum Sc is partially destroyed by coming into contact with the scum unit Sc0, and the collapsed scum Sc also flows into the peripheral region R1 from the inflow port 3a. Or, the action of flowing through the removal area on the water surface in the transfer direction is repeated.

The scum Sc gathered at the inflow port 3a flows into the peripheral region R1 from the inflow port 3a and flows toward the suction port 5a in the peripheral region R1 as conceptually shown in FIG. After that, it is sucked into the flow path S from the suction port 5a. Here, if the depth of the suction port 5a from the water surface WL is set to 20 mm or more, the scum Sc can flow in more smoothly from the suction port 5a, which is preferable.

In the sewage W, the peripheral region R1 is separated from the other region R2 by the partition member 3, so that the inflow of scum Sc from the inflow port 3a into the peripheral region R1 is promoted, and the scum Sc floating on the water surface WL is promoted. Can be efficiently flowed into the peripheral region R1. Further, since the peripheral region R1 is partitioned from the other region R2 by the partition member 3, the flow of water from the inflow port 3a to the suction port 5a in the peripheral region R1 is not obstructed, and the water flows into the peripheral region R1. The scum Sc flows through the peripheral region R1 and is smoothly sucked from the suction port 5a.

Further, as shown in FIGS. 1 and 2, in the flow path S, the sucked scum Sc moves toward the scum pit 92 by the flow of water discharged from the discharge port 7a, and in the flow path forming member 5. It is blown out from the downstream end 52 in the discharge direction. As described above, the scum Sc blown out from the downstream end 52 of the flow path forming member 5 gathers in the vicinity of the blocking wall 93, and by opening the gate 931, the scum collected in the vicinity of the blocking wall 93. Sc is collected in the scum pit 92 together with the sewage. Here, the flow of water once generated in the flow path S by discharging water from the discharge port 7a is difficult to be attenuated because the flow path S is surrounded by the flow path forming member 5, and the scum Sc is provided for a long distance. Can be transferred. As a result, the number of the discharge port 7a, the supply pipe 7a for supplying water to the discharge port 7a, and the like can be reduced, and a simple structure can be adopted. Further, the amount of water discharged from the discharge port 7a can be suppressed.

When the flow path forming member 5 is long, as shown by the alternate long and short dash line in FIG. 1, the discharge member 7 may be provided also in the middle portion of the flow path forming member 5 in the extending direction. Further, when the length of the flowing water portion 91 in the width direction is long, a plurality of flow path forming members 5 and partition members 3 are juxtaposed in the width direction of the flowing water portion 91, and in the flow path S of each flow path forming member 5. Although a discharge member 7 for discharging water may be provided in the water, the transfer device 1 may be movable in the width direction as shown by the double-headed arrow in FIG.

Further, as shown by the alternate long and short dash line in FIG. 2, the flow path forming member 5 and the partition member 3 are inclined so as to approach the water surface WL toward the downstream side in the discharge direction (the downstream side in the discharge direction becomes higher). It may be arranged in an inclined posture (in an inclined posture), and water may be discharged from the discharge port 7a into the flow path S along the inclined posture of the flow path forming member 5. If this aspect is adopted, the flow of water generated in the flow path S is less likely to be attenuated by discharging water from the discharge port 7a, and the scum Sc can be transferred over a longer distance. Since a relatively strong water flow is generated in the portion of the flow path S near the discharge port 7a, even if the position of the inflow port 3a is slightly deeper than the water surface WL, the scum Sc floating on the water surface WL Is unlikely to occur, such as difficulty in flowing in from the inflow port 3a.

Next, a modification of the transfer device shown in FIGS. 1 to 3 will be described with reference to FIGS. 4 to 10. In the modification described below, the differences from the embodiments shown in FIGS. 1 to 3 will be mainly described, and the constituent elements having the same names as the constituent elements in the embodiments shown in FIGS. 1 to 3 will be described. , The description will be given with the reference numerals used so far, and duplicate explanations may be omitted. Further, FIGS. 4 to 10 show a state corresponding to FIG. 3, and in order to simplify the drawing, only the discharge port 7a is shown for the discharge member 7, and the partition member 3 and the flow path forming member 5 are shown. , The cross-sectional shape is schematically shown.

FIG. 4A is a diagram showing a transfer device of the first modification. In this modification, the upper end portion 51 of the flow path forming member 5 is lower than the inflow port 3a of the partition member 3, that is, the upper end portion 51 of the flow path forming member 5 is the inflow port 3a of the partition member 3. The flow path forming member 5 and the partition member 3 are arranged so as to be deeper than the water surface WL. As a result, the radial distance Di between the partition member 3 and the flow path forming member 5 becomes narrower toward the suction port 5a, and the flow velocity of water flowing in the peripheral region R1 becomes faster toward the suction port 5a. As a result, the scum Sc can be more reliably sucked from the suction port 5a.

Further, as shown by the alternate long and short dash line, the opening length L3 in the width direction of the inflow port 3a formed by using a pipe material having a small diameter for the flow path forming member 5 and cutting out the upper side portion thereof is the width of the suction port 5a. The mode may be shorter than the opening length L2 in the direction. By doing so, the flow velocity of the water flowing into the inflow port 3a becomes high, and the scum Sc can flow in more smoothly from the inflow port 3a. Since the partition member 3 shown by the alternate long and short dash line in FIG. 4A has its radial center coincided with the radial center of the flow path forming member 5, the partition member 3 and the flow path forming member 5 are aligned with each other. The radial distance Di from and is substantially the same at any location. However, similarly to the partition member 3 shown by the solid line, the position of the flow path forming member 5 may be lowered so that the interval Di becomes narrower toward the suction port 5a.

FIG. 4B is a diagram showing a transfer device of the second modification. In this modification, the flow path forming member 5 and the partition member 3 are arranged so that the upper end portion 51 of the flow path forming member 5 is higher than the inflow port 3a of the partition member 3. As a result, the upper portion S1 of the flow path S is located above the inflow port 3a, and the radial distance Di between the partition member 3 and the flow path forming member 5 becomes wider toward the suction port 5a. In this second modification, the peripheral region R1 can be secured widely.

Further, as shown by the alternate long and short dash line, the partition member 3 is formed by using a pipe material having a small diameter, and the radial center thereof is aligned with the radial center of the flow path forming member 5. The radial distance Di between the flow path forming member 5 and the flow path forming member 5 may be the same at any location. The flow path forming member 5 may be arranged so that the upper end portion 51 thereof is located on the water surface WL, but the width of the flow path forming member 5 on the water surface WL due to the portion protruding on the water surface WL. Since the flow of water in the direction is blocked, it is preferable to arrange the flow path forming member 5 at a position where the upper end portion 51 is submerged in water. Further, if the depth of the upper end portion 51 of the flow path forming member 5 from the water surface WL is set to 20 mm or more, scum Sc is less likely to be placed on the upper end portion 51, which is preferable.

FIG. 5A is a diagram showing a transfer device of the third modification. The transfer device 1 of the third modification is different from the transfer device 1 shown in FIG. 3 in that both of the transfer device 1 have a flat-shaped partition member 3 and a flow path forming member 5. Specifically, the partition member 3 is formed by cutting out an upper end portion of a pipe having a height dimension of about 1/2 of its width dimension W1. Further, the flow path forming member 5 is formed by cutting out a lower end portion of a pipe having a height dimension of about 1/2 of its width dimension W2. That is, in this modification, the partition member 3 and the flow path forming member 5 have a flat shape in which the dimension in the width direction orthogonal to the discharge direction in the horizontal plane is longer than the dimension in the height direction. As described above, if the flat partition member 3 is adopted, it becomes easy to widen the inflow port 3a in the width direction. If the inflow port 3a is widened in the width direction, the scum Sc suspended in a wider range of the water surface WL can flow into the peripheral region R1. Further, by adopting the flat partition member 3 and the flow path forming member 5, it is difficult to obstruct the flow of the sewage W in the flowing water portion 91 (see FIG. 1), and the resistance to the flow of the sewage W is reduced. Will also be possible.

As shown by the alternate long and short dash line, the position of the flow path forming member 5 may be lowered so that the upper end portion 51 of the flow path forming member 5 is lower than the inflow port 3a of the partition member 3. Further, instead of the flat-shaped partition member 3, the partition member 3 shown in FIG. 3 described above may be used as shown by the alternate long and short dash line.

FIG. 5B is a diagram showing a transfer device of the fourth modification. In the transfer device 1 of the modified example, in the transfer device 1 of the third modified example shown in FIG. 5A, the upper end portion 51 of the flow path forming member 5 is higher than the inflow port 3a of the partition member 3. , The flow path forming member 5 and the partition member 3 are arranged. As a result, the upper portion S1 in the flow path S is located above the inflow port 3a. Instead of the flat-shaped flow path forming member 5, the above-mentioned flow path forming member 5 shown in FIG. 3 may be used as shown by the alternate long and short dash line.

FIG. 6A is a diagram showing a transfer device of the fifth modification. In the transfer device 1 of this modified example, the shape of the partition member 3 is different from that of the transfer device 1 shown in FIG. As shown in FIG. 6A, the partition member 3 has a pair of vertically erected wall portions 32 and a bottom portion 33 that horizontally connects the lower end portions of the pair of wall portions 32, and has an upper portion. Is an open U-shaped cross section. Here, if the inner peripheral surface of the partition member 3 is arcuate as in the embodiment shown in FIG. 3 and the modified examples shown in FIGS. 4 and 5, the partition member 3 and the flow path forming member 5 When moving one of the partition member 3 and the flow path forming member 5 in the vertical direction, the partition is formed depending on the size of the partition member 3 and the opening length L3 of the inflow port 3a in the partition member 3 (see FIG. 4A). The member 3 and the flow path forming member 5 may interfere with each other. According to this modification, since the vertically erected wall portion 32 is located on the side of the flow path forming member 5, as shown by the double arrows in the figure, of the partition member 3 and the flow path forming member 5. When one of them is moved in the vertical direction, the partition member 3 and the flow path forming member 5 are less likely to interfere with each other. As a result, the degree of freedom when moving one of the partition member 3 and the flow path forming member 5 in the vertical direction is improved. In addition, the partition member 3 can be easily manufactured.

The partition member 3 and the flow path forming member 5 may be arranged so that the upper end portion 51 of the flow path forming member 5 is at the same height as the inflow port 3a of the partition member 3, but as shown by the alternate long and short dash line. The upper end portion 51 of the flow path forming member 5 may be set at a position lower than the inflow port 3a of the partition member 3. As shown by the alternate long and short dash line, the partition member 3 may be formed by bending the upper end side portion 321 of the wall portion 32 so as to expand outward in the width direction, or the wall portion 32 and the bottom portion 33. An arcuate corner portion 34 may be provided at the connecting portion of the above.

FIG. 6B is a diagram showing a transfer device of the sixth modification. In the transfer device 1 of the modified example, in the transfer device 1 of the fifth modified example shown in FIG. 6A, the inflow port 3a of the partition member 3 is lower than the upper end portion 51 of the flow path forming member 5. , The flow path forming member 5 and the partition member 3 are arranged. As shown by the alternate long and short dash line, the bottom portion 33 of the partition member 3 may be formed in an arc shape that is convex downward.

FIG. 7A is a diagram showing a transfer device of the seventh modification. In this modification, the shape of the partition member 3 is different from that of the transfer device 1 shown in FIG. As shown in FIG. 7A, the partition member 3 of this modified example has a second curved portion 35 curved so as to extend outward in the width direction at the upper end portion. As a result, the inflow port 3a of the partition member 3 expands, and the scum Sc floating in a wider range of the water surface WL can flow into the peripheral region R1 from the inflow port 3a. Further, as shown by the alternate long and short dash line, the flow path forming member 5 may be arranged at a position where the upper end portion 51 of the flow path forming member 5 is lower than the inflow port 3a of the partition member 3.

FIG. 7B is a diagram showing a transfer device of the eighth modification. In the transfer device 1 of the modified example, in the transfer device 1 of the seventh modified example shown in FIG. 7A, the upper end portion 51 of the flow path forming member 5 is higher than the inflow port 3a of the partition member 3. , The partition member 3 and the flow path forming member 5 are arranged. Further, in this modification, the portion where the radial distance Di between the partition member 3 and the flow path forming member 5 is the narrowest is set to be substantially the same as the opening length L2 in the width direction of the suction port 5a. As shown by the alternate long and short dash line, a partition member 3 having a small diameter is adopted, and the radial distance Di between the second curved portion 35 and the flow path forming member 5 is set from the opening length L2 in the width direction of the suction port 5a. May also be shortened to increase the flow velocity of water passing through this interval Di.

FIG. 8 is a diagram showing a transfer device of the ninth modification. In this modification, the depth Dp1 from the water surface WL and the opening length L3 at the inflow port 3a and the opening length L3 at the inflow port 3a are kept constant at the upper end portion 51 of the flow path forming member 5 and the discharge port 7a. The depth Dp3 and the opening length L2 from the water surface WL at the suction port 5a can be adjusted.

As shown in FIG. 8 (a) surrounded by a square chain line, the partition member 3 has a pair of partition member components 30 having a 1/2 arc shape, and is shown in FIGS. 8 (a) and FIG. As shown in b), the partition member 3 is formed by overlapping a part of the pair of partition member components 30 with each other. In FIGS. 8A and 8B, the portion where the pair of partition member components 30 overlap each other is indicated by a symbol β. The pair of partition member components 30 can rotate about the center O in the radial direction as the center of rotation, and the size of the overlapping portion β can be changed.

When the overlapping portion β is made smaller as shown in FIG. 8B from the state of the partition member 3 shown in FIG. 8A, the depth Dp1 of the inflow port 3a from the water surface WL becomes shallower, and the inflow port 3a becomes shallower. The opening length L3 of is narrowed. Although not shown, on the contrary, when the overlapping portion β is increased, the depth Dp1 of the inflow port 3a from the water surface WL becomes deeper, and the opening length L3 of the inflow port 3a becomes wider. In this way, by changing the size of the portion β where the pair of partition member components 30 overlap, the depth Dp1 and the opening length L3 of the inflow port 3a from the water surface WL can be adjusted. In FIG. 8, when the height of the water surface WL is constant, the mode of adjusting the depth Dp1 of the inflow port 3a from the water surface WL has been described as an example. It may be adjusted so that the depth Dp1 of the inflow port 3a from the water surface WL becomes constant.

Further, as shown in FIGS. 8 (a) and 8 (b), the flow path forming member 5 includes a flow path forming member main body 50 having an arcuate cross section cut out approximately 1/3 below the cylindrical body. A pair of slide pieces 53 provided at both ends of the notched portion of the flow path forming member main body 50 are provided. Each of the pair of slide pieces 53 has a 1/5 arc shape, and the lower end portion projects downward from the flow path forming member main body 50, and a suction port 5a is formed between these lower end portions. Further, each of the pair of slide pieces 53 slides along the inner peripheral surface 50a of the flow path forming member main body 50, whereby the depth Dp3 and the opening length L2 of the suction port 5a from the water surface WL are adjusted. Can be done.

Specifically, from the state of the flow path forming member 5 shown in FIG. 8 (a), as shown by the dotted arc-shaped arrow in FIG. 8 (b), each of the pair of slide pieces 53 is passed through the flow path. When the suction port 5a is slid inward (upward) of the forming member main body 50, the depth Dp3 of the suction port 5a from the water surface WL becomes shallow, and the opening length L2 of the suction port 5a becomes wide. Although not shown, on the contrary, when each of the pair of slide pieces 53 is slid to the outside (downward) of the flow path forming member main body 50, the depth Dp3 of the suction port 5a from the water surface WL becomes deep and suction is performed. The opening length L2 of the mouth 5a becomes narrower.

The configuration of the partition member 3 in the modified example shown in FIG. 8 may be applied to the flow path forming member 5, or the configuration of the flow path forming member 5 may be applied to the partition member 3. Further, by dividing the pair of partition member components 30 and the slide piece 53 into a plurality of parts in the discharge direction and adjusting each of them, for example, the depth Dp1 of the inflow port 3a from the water surface WL and the opening of the suction port 5a. The length L2 and the like can be made different between the upstream side in the discharge direction and the downstream side in the discharge direction.

FIG. 9 is a diagram showing a transfer device of the tenth modification. In the transfer device 1 of this modified example, the flow path forming member 5 is supported by the partition member 3 in a so-called cantilever state in which the flow path forming member 5 is connected to one end (the left end in the figure) of the partition member 3 in the width direction. Is. Conceptually, as shown by enclosing the two-dot chain line in a square, each of the flow path forming member 5 and the partition member 3 has a common portion 4 indicated by a dotted line, which is partially shared with each other. This makes it easier to secure a radial distance Di between the partition member 3 and the flow path forming member 5. Further, in this modification, the inner peripheral surface 4a is formed of a continuous curved surface from the partition member 3 to the flow path forming member 5. As a result, the flow of water from the inflow port 3a of the partition member 3 toward the suction port 5a becomes a smooth flow along the inner peripheral surface 4a, and the scum Sc is smoothly sucked from the suction port 5a of the flow path forming member 5. Can be done. The height of the upper end portion 51 of the flow path forming member 5 (depth from the water surface WL) is the height of the other end (the right end in the figure) of the partition member 3 in the width direction (from the water surface WL). Although it may be different from the depth), as shown in FIG. 9, if the height of the upper end portion 51 of the flow path forming member 5 and the height of the other end of the partition member 3 in the width direction are the same, It is preferable that the scum Sc easily flows into the inflow port 3a from both sides in the width direction.

FIG. 10 is a diagram showing a transfer device of the eleventh modification. In this modification, the partition member 3 is omitted, and the flow path forming member 5 is arranged in a posture in which the suction port 5a faces upward. In this modification, when water is discharged from the discharge port 7a into the flow path S of the flow path forming member 5, it is drawn into the flow of the discharged water and flows from the suction port 5a as shown in FIG. A flow of water in the direction of being sucked into the road S is generated. As a result, as conceptually showing the flow of the scum Sc in FIG. 10, the scum Sc floating on the water surface WL of the flowing water portion 91 gathers toward the suction port 5a and is sucked into the flow path S from the suction port 5a. Is done. The scum Sc sucked into the flow path S moves in the transfer direction by the flow of water discharged from the discharge port 7a.

As shown by the arcuate double-headed arrow, the flow path forming member 5 is rotated around the center O in the radial direction, and the direction in which the suction port 5a opens, which is indicated by the straight arrow, is at an angle α. It may be a mode that can be changed within a range. Further, as the flow path forming member 5, as shown by the alternate long and short dash line, the flat flow path forming member 5 in the transfer device 1 of the third modified example of FIG. 5A may be used. In the embodiment shown in FIG. 3 and the modified example having the partition member 3 shown in FIG. 4 and the like, a mode in which the partition member 3 is rotated around the center in the radial direction may be adopted.

Next, a second embodiment of the transfer device of the present invention, in which the equipment to be installed is different, will be described. Also in the second embodiment described below, the components having the same names as the components in the embodiments shown in FIGS. 1 to 3 will be described with the reference numerals used so far, and the overlapping description will be described. It may be omitted.

FIG. 11 is a schematic configuration diagram of a inverted siphon structure provided with the transfer device according to the second embodiment of the present invention. The inverted siphon structure is a structure in which when a sewage pipe crosses a river or railroad, a inverted siphon is provided at a position lower than these rivers and the sewage flows by the difference in water level between the upstream and downstream pipelines. Say.

In FIG. 11, the inverted siphon structure 8 allows the sewage DR to flow from the left side to the right side of the river Ri, and as shown by the white arrows in the figure, the direction from the left to the right is the direction in which the sewage DR flows. .. As shown in FIG. 11, the inverted structure 8 has an upstream pipe 81, an upstream manhole 82, a inverted pipe 83, a downstream manhole 84, and a downstream in the order described from the upstream side to the downstream side of the sewage DR flow. A side pipeline 85 is provided. The upstream side pipeline 81 is connected to the upstream side manhole 82, and the inverted pipe 83 is connected to the upstream side manhole 82 and the downstream side manhole 84 at a position lower than the river Ri. The downstream side pipeline 85 is connected to the downstream side manhole 84 at a position lower than the position where the upstream side pipeline 81 is connected to the upstream side manhole 82. Sediment pools 821 and 841 are formed at the bottom of the upstream manhole 82 and the bottom of the downstream manhole 84, respectively.

The sewage DR that has flowed through the upstream pipe 81 flows from the upstream manhole 82 through the inverted siphon 83 due to the so-called reverse siphon action caused by the water level difference between the upstream pipe 81 and the downstream pipe 85. Further, it flows from the downstream side manhole 84 to the downstream side pipeline 85.

Here, the upstream pipeline 81 is provided with a transfer device 1 having the same configuration as the transfer device 1 shown in FIGS. 1 to 3. In this transfer device 1, the downstream end 52 of the flow path forming member 5 is located near the region where the upstream side pipeline 81 is connected to the upstream side manhole 82. Similar to the transfer device 1 shown in FIGS. 1 to 3 described above, when water is discharged from the discharge port 7a, the scum Sc floating on the water surface WL of the sewage DR is sucked into the flow path forming member 5 and then upstream. It is transferred toward the side manhole 82 and blown out from the downstream end 52 of the flow path forming member 5 to be collected on the water surface WL of the sewage DR in the upstream manhole 82.

The scum Sc collected on the water surface WL of the sewage DR in the upstream manhole 82 is removed by opening the iron lid of the upstream manhole 82, and a part of it is drawn into the flow of the sewage DR and is a inverted pipe. It flows into 83. The sand or the like that has settled in the sediment pool 821 also flows into the inverted pipe 83 due to the flow of the sewage DR. The inverted pipe 83 is provided with a transfer device 1 having the same configuration as the transfer device 1 shown in FIGS. 1 to 3 and a sediment transfer device 2 for transferring sediment such as sand that has settled.

FIG. 12 is a cross-sectional view taken along the line CC of the inverted siphon shown in FIG. In addition, in FIG. 12, the region on both sides in the width direction and the intermediate region in the vertical direction in the inverted pipe 83 are omitted.

As shown in FIG. 12, the inside of the inverted pipe 83 is filled with the sewage DR, and the water surface WL of the sewage DR is in contact with the ceiling surface 831 of the inverted pipe 83. In the transfer device 1, the depth Dp1 from the water surface WL, that is, the ceiling surface 831 at the inflow port 3a of the partition member 3 and the upper end portion 51 of the flow path forming member 5 is set to 20 mm or more. When the depth Dp1 from the water surface WL is less than 20 mm, the space between the ceiling surface 831 of the inverted pipe 83 and the inflow port 3a of the partition member 3 and the ceiling surface 831 of the inverted pipe 83 and the flow path forming member 5 Scum Sc is likely to be caught between the upper end portion 51 and the scum Sc, which is not preferable.

When water is discharged from the discharge port 7a of the discharge member 7 into the flow path S of the flow path forming member 5, a flow of water in the direction of being sucked into the flow path S from the suction port 5a is generated, and the water flows from the inflow port 3a to the periphery. A flow of water flowing into the region R1 is generated, and a flow of water toward the suction port 5a is generated in the peripheral region R1. As a result, a flow in the direction of gathering at the inflow port 3a of the partition member 3 is generated on the water surface WL (near the ceiling surface 831), scum Sc floating near the ceiling surface 831 gathers, and the scum Sc floating around the inflow port 3a is gathered. It flows into the region R1. The scum Sc that has flowed into the peripheral region R1 is sucked into the flow path S from the suction port 5a, and the sucked scum Sc is transferred to the downstream manhole 84. As a result, it is possible to solve the problem that the scum Sc adheres to the ceiling surface 831 of the inverted pipe 83 and stays in the inverted pipe 83.

On the bottom side of the inverted pipe 83, a sediment transfer device 2 for transferring the sediment is provided on the bottom surface 832. Further, the bottom of the inverted siphon pipe 83 has been repaired, and a pair of inclined surfaces 833 that are inclined downward toward the sediment transfer device 2 are provided by the concrete repaired portion shown by cross-hatching. The sediment transfer device 2 includes a trough 21, a bottom flow path forming member 25, and a bottom discharge member 27. The trough 21 forms a groove M extending in the direction from the upstream manhole 82 to the downstream manhole 84 (see FIG. 11) on the bottom side of the inverted pipe 83. The portion of the trough 21 that opens upward becomes the opening 21a of the groove M, and the lower end of the inclined surface 833 is connected to the opening 21a of the groove M. The bottom flow path forming member 25 extends in the same direction as the trough 21, and its total length is formed to be substantially the same as the trough 21. The bottom flow path forming member 25 forms the bottom flow path S2, and separates the bottom flow path S2 from the groove M. Further, the bottom flow path forming member 25 has a groove suction port 25a connected to the bottom flow path S2 and located in the groove M. The bottom discharge member 27 is provided with a bottom discharge port 27a, and water is discharged from the bottom discharge port 27a into the bottom flow path S2.

Sediment such as sand contained in the sewage DR that has flowed into the inverted siphon 83 will settle in the process of the sewage DR flowing to the downstream side, and will flow down toward the trough 21 along the inclined surface 833. The sediment that has flowed down from the inclined surface 833 enters the groove M through the opening 21a of the trough 21. In addition, sand or the like deposited in the sediment pool 821 of the upstream manhole 82 shown in FIG. 11 may also enter the groove M.

When water is discharged from the bottom discharge port 27a into the bottom flow path S2, the sediment deposited on the bottom of the groove M is drawn into the flow of the discharged water, and the sediment deposited on the bottom of the groove M is indicated by the arrow of the curve shown in FIG. As described above, the water is sucked into the bottom flow path S2 from the groove suction port 25a. Further, in the bottom flow path S2 of the bottom flow path forming member 25, the sucked sediment is discharged from the bottom discharge port 27a on the downstream side in the discharge direction (downstream side manhole 84 side). Move towards. As a result, sediment such as sand can be transferred to the sediment pool 841 or the like in the downstream manhole 84 without remaining in the inverted pipe 83.

The present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the claims.

It should be noted that even if the constituent requirements are included only in the description of each embodiment and each modified example described above, the constituent requirements may be applied to other embodiments or other modified examples.

Further, the transfer device described so far has formed a flow path, and includes a flow path forming member connected to the flow path and provided with a suction port for submerging in water.
A discharge port for discharging a fluid is provided in the flow path.
The suction port functions as an opening for sucking an object to be transferred suspended on the water surface into the flow path by discharging a fluid into the flow path.
The flow path functions as a path in which the transferred object sucked into the flow path moves toward the downstream side in the discharge direction of the fluid when the fluid is discharged into the flow path. It is characterized by that.

Further, in this transfer device, the peripheral region around the flow path forming member and other regions in water are partitioned so that the peripheral region is inside, and an inflow port connected to the peripheral region is provided. Equipped with parts
The inflow port functions as an opening for the transferred object suspended on the water surface to flow into the peripheral region by discharging a fluid into the flow path.
The suction port may function as an opening for sucking the transferred object that has flowed into the peripheral region into the flow path by discharging the fluid into the flow path.

Further, the transfer device described so far forms a flow path, and is provided with a suction port connected to the flow path and submerged in water, and a pipe-shaped flow extending substantially parallel to the water surface. Road forming member and
The flow path is provided with a discharge port for discharging a fluid in the axial direction of the flow path forming member.
The suction port extends in the extending direction of the flow path forming member, and functions as an opening for sucking an object to be transferred suspended on the water surface into the flow path by discharging a fluid into the flow path. Is a thing
The flow path functions as a path in which the transferred object sucked into the flow path moves toward the downstream side in the discharge direction of the fluid when the fluid is discharged into the flow path. It is characterized by that.

Further, in this transfer device, a peripheral region around the flow path forming member and another region in water are partitioned so that the peripheral region is inside, and an inflow port connected to the peripheral region is provided and the water surface is provided. Equipped with a pipe-shaped partition member extending substantially parallel to the
The inflow port is configured to face upward, and functions as an opening for the transferred object suspended on the water surface to flow into the peripheral region by discharging a fluid into the flow path.
The suction port opens in the peripheral region, and when the fluid is discharged into the flow path, the suction port functions as an opening for sucking the transferred object that has flowed into the peripheral region into the flow path. There may be.

Further, the transfer device may be movable in a direction orthogonal to the discharge direction of the fluid in the horizontal plane.

By doing so, the object to be transferred floating in a wider range on the water surface can flow into the peripheral region from the inflow port and be transferred without increasing the number of the transfer devices.

1 Transfer device 3 Partition member 3a Inflow port 5 Flow path forming member 5a Suction port 51 Upper end 7 Discharge member 7a Discharge port 9 Sewage channel S Flow path Sc Scum R1 Peripheral area W Sewage

Claims (4)

A pipe-shaped flow path forming member that forms a flow path, has a suction port connected to the flow path and is submerged in water, and extends substantially parallel to the water surface, and a pipe-shaped flow path forming member in the flow path. A transfer device provided with a discharge port for discharging a fluid in the axial direction of the flow path forming member, and arranged in water in which a peripheral region around the flow path forming member and another region are connected.
The suction port is configured to face upward, extends in the extending direction of the flow path forming member, and discharges the transferred object suspended on the water surface into the flow path to cause the flow. It functions as an opening that sucks into the road,
The flow path functions as a path in which the transferred object sucked into the flow path moves toward the downstream side in the discharge direction of the fluid when the fluid is discharged into the flow path. A transfer device characterized by that. A pipe-shaped flow path forming member that forms a flow path, is provided with a suction port connected to the flow path and is submerged in water, and extends substantially parallel to the water surface.
A discharge port for discharging a fluid in the flow path in the axial direction of the flow path forming member, and a discharge port.
In water, the peripheral region around the flow path forming member and other regions are partitioned so that the peripheral region is inside, and an inflow port connected to the peripheral region is provided and extends substantially parallel to the water surface. Equipped with the existing pipe-shaped partition member
The inflow port is configured to face upward, and functions as an opening for allowing an object to be transferred suspended on the water surface to flow into the peripheral region by discharging a fluid into the flow path.
The suction port opens downward in the peripheral region, and when the fluid is discharged into the flow path, the suction port serves as an opening for sucking the transferred object that has flowed into the peripheral region into the flow path. It works and
The flow path functions as a path in which the transferred object sucked into the flow path moves toward the downstream side in the discharge direction of the fluid when the fluid is discharged into the flow path. A transfer device characterized by that. The first or second aspect of the present invention, wherein the flow path forming member has a flat shape in which the dimension in the width direction orthogonal to the discharge direction of the fluid in the horizontal plane is longer than the dimension in the height direction. Transfer device. The transfer device according to claim 2, wherein the partition member has a flat shape in which the dimension in the width direction orthogonal to the discharge direction of the fluid and the dimension in the horizontal plane is longer than the dimension in the height direction.

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