Transfer device

Abstract

To provide a transfer apparatus capable of transferring objects floating on a surface of water with a simple structure by reducing an amount of fluid to be discharged.SOLUTION: An apparatus includes a channel forming member 5 provided with a suction port 5a which is connected to a flow channel S and submerged in water, a discharge port 7a which discharges fluid into the flow channel S, and a partition member 3 which surrounds the channel forming member 5 with an inlet 3a which is submerged in water. The inlet 3a is an opening through which scum Sc suspended on the water surface flows into a peripheral area R1 between the partition member 3 and the channel forming member 5. The inlet port 5a is an opening through which the scum Sc that has flowed into the peripheral area R1 is sucked into the flow channel S. The flow channel S is a path through which the scum Sc sucked into the flow channel S moves toward the downstream side in the fluid discharge direction. The flow path forming member 5 and partition member 3 are arranged in an inclined posture so that they approach the water surface as they move downstream in the discharge direction, and the discharge port 7a discharges fluid along the inclined posture of the flow path forming member 5.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a transport device for transporting an object floating on the water surface. [Background technology]

[0002] 2. Description of the Related Art In sewage treatment plants, water conduits, settling tanks, etc. are provided with transfer devices that transfer materials such as scum floating on the water surface toward a scum pit or the like (see, for example, Patent Document 1, etc.).

[0003] FIG. 13 is a schematic diagram of the transfer device described in Patent Document 1 as seen 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 surface of the wastewater in a conduit 9 through which the wastewater flows from the left side to the right side of the figure. These spray nozzles 61 are arranged at predetermined intervals in the width direction of the conduit 9 (vertical direction in FIG. 13), and are also arranged in a plurality of rows at predetermined intervals in the transfer direction of the scum Sc (transferred object) (direction from left to right in FIG. 13). In the transfer device 6 described in Patent Document 1, pressurized water or air is ejected from the plurality of spray nozzles 61 approximately horizontally in the transfer direction toward a scum pit or the like (not shown). This generates an air current or wind current toward the scum pit on the water surface, and the scum floating on the water surface is transferred toward the scum pit or the like by this air current or the like. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 7-303883 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the transfer device 6 described in Patent Document 1, the pressurized water discharged from the spray nozzle 61 is dispersed, and it is difficult to generate an air flow capable of transferring the object to be transferred over a wide area on the water surface. For this reason, as shown in FIG. 13, the area on the water surface where the pressurized water discharged from the spray nozzle 61 can have an effect is shown in white surrounded by a dashed line, the area on the water surface where the object to be transferred (scum Sc) can be transferred by one spray nozzle 61 is limited. As a result, a large number of spray nozzles 61 must be arranged at intervals on the water surface where the scum Sc floats (in the figure, the scum floating in a lump on the water surface is marked with the symbol Sc0), and further, a large number of pipes 62 are required to supply the pressurized water to these many spray nozzles 61, making the device large-scale. Furthermore, a large amount of pressurized water to be discharged from the many spray nozzles 61 is required. In addition, in the mode in which air is discharged from the spray nozzle 61, the scum Sc may dry out and harden due to the discharged air. The scum Sc that has hardened in this way is less able to move on the water surface, which creates the problem of having to eject even more air.

[0006] In view of the above circumstances, the present invention has an object to provide a transfer device that can transfer an object floating on the water surface while reducing the amount of fluid discharged and using a simple structure. [Means for solving the problem]

[0007] The present invention provides a transfer device that achieves the above object, which is provided with a flow path and a suction port that is connected to the flow path and submerged in water. A cylindrical shape with a partially cut out cross section of an arc A flow path forming member; Discharging a fluid into the flow path Long hole shape A discharge port; A flow inlet is provided that is submerged in water and surrounds the flow path forming member. A cylindrical shape with a partially cut out cross section of an arc A partition member, The inlet is The partition member is linearly formed over the entire length thereof, a flow passage that functions as an opening for allowing a transport object floating on the water surface to flow into a region between the partition member and the flow passage forming member by discharging a fluid into the flow passage, The suction port is The flow passage forming member is linearly formed over the entire length of the flow passage forming member, When a fluid is discharged into the flow path, the fluid functions as an opening that sucks the object to be transferred that has flowed into a region between the partition member and the flow path forming member into the flow path, the flow path functions as a path along which the object to be transferred, which has been sucked into the flow path, moves toward a downstream side in a discharge direction of the fluid as the fluid is discharged into the flow path, the flow path forming member and the partition member are disposed in an inclined position so as to approach a water surface toward a downstream side in the discharge direction, The discharge port is The flow passage forming member is disposed within the The fluid is discharged along the inclined position of the flow path forming member. do. Effect of the Invention

[0008] According to the present invention, it is possible to provide a transfer device that can transfer an object floating on the water surface by reducing the amount of fluid discharged and using a simple structure. [Brief description of the drawings]

[0009] [Figure 1] FIG. 2 is a plan view of a water conduit provided with a transfer device according to an embodiment of the present invention, as viewed from above. [Diagram 2] FIG. 2 is a cross-sectional view of the water conduit shown in FIG. 1 taken along line AA. [Diagram 3] 2 is a cross-sectional view of the transfer device shown in FIG. 1 along line BB. [Figure 4] FIG. 13(a) is a diagram showing a transfer device of a first modified example, and FIG. 13(b) is a diagram showing a transfer device of a second modified example. [Diagram 5] FIG. 13(a) is a diagram showing a transfer device of a third modified example, and FIG. 13(b) is a diagram showing a transfer device of a fourth modified example. [Figure 6] FIG. 13(a) is a diagram showing a transfer device of a fifth modified example, and FIG. 13(b) is a diagram showing a transfer device of a sixth modified example. [Figure 7] FIG. 13(a) is a diagram showing a transfer device of a seventh modified example, and FIG. 13(b) is a diagram showing a transfer device of an eighth modified example. [Figure 8] FIG. 13 is a diagram showing a transfer device of a ninth modified example. [Figure 9] FIG. 23 is a diagram showing a transfer device of a tenth modified example. [Figure 10] FIG. 19 is a diagram showing a transfer device of an eleventh modified example. [Figure 11] FIG. 11 is a schematic configuration diagram of a crossing structure provided with a transfer device according to a second embodiment of the present invention. [Figure 12] 12 is a cross-sectional view of the buried pipe shown in FIG. 11 along line CC. [Figure 13] FIG. 2 is a schematic diagram of the transfer device described in Patent Document 1 as viewed from above. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment 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 materials floating on the water surface, and can be suitably applied to, for example, a conduit or a settling tank in a sewage treatment plant, or an inverted structure of a sewer pipe. In this embodiment, a transfer device provided in a conduit of a primary settling tank or a final settling tank for transferring scum floating on the water surface will be described as an example. That is, in this embodiment, scum corresponds to an example of a material to be transferred. The conduit is a waterway that distributes wastewater received from a grit tank or an aeration tank in a sewage treatment plant to multiple settling tanks, and the scum floating on the water surface is collected in a scum pit.

[0011] Fig. 1 is a plan view of a conduit provided with a transfer device according to an embodiment of the present invention, as seen from above, and Fig. 2 is a cross-sectional view of the conduit shown in Fig. 1 taken along line AA. Fig. 1 also shows some of a plurality of settling basins P into which wastewater is distributed from the conduit 9.

[0012] As shown in FIG. 1, the water conduit 9 is a rectangular waterway that is long in the left-right direction when viewed from above, and has a flow section 91 that receives wastewater sent from a grit basin (not shown) and a scum pit 92 that is separated from the flow section 91 by a blocking wall 93. The flow section 91 receives wastewater from the left side of the figure, and the received wastewater flows toward the scum pit 92 provided on the right side of the figure and is blocked by the blocking wall 93. In addition, the flow section 91 is connected to a plurality of settling tanks P arranged in parallel in the direction in which the wastewater flows through the flow section 91 via communication ports 94. The wastewater flowing through the flow section 91 is distributed by flowing into each settling tank P from each communication port 94, and the wastewater that flows into each settling tank P flows toward the bottom of the figure.

[0013] As shown in Figs. 1 and 2, the flowing water section 91 is provided with a transfer device 1. Before the transfer device 1 is driven, scum Sc floats over the entire water surface WL (see Fig. 2) of the wastewater W in the flowing water section 91. Figs. 1 and 2 show the state in which the scum Sc is transferred to the right side of the figure by the discharge of water from the discharge port 7a of the transfer device 1 and collected near the blocking wall 93, as will be described in detail later. That is, the scum Sc is transferred in the longitudinal direction of the flowing water section 91, and in Figs. 1 and 2, the direction from the left to the right corresponds to the discharge direction in which the fluid is discharged and also corresponds to the transfer direction in which the scum Sc is transferred. Hereinafter, the short side direction of the flowing water section 91, i.e., the direction perpendicular to the discharge direction in a horizontal plane, may be referred to as the width direction.

[0014] The blocking wall 93 has an opening 93a communicating with the scum pit 92, and a gate 931 for blocking the opening 93a is provided. The gate 931 can slide, for example, vertically to open and close the opening 93a. When the gate 931 is slid so that its upper end is positioned below the water level WL of the wastewater W blocked by the blocking wall 93, the scum Sc collected near the blocking wall 93 flows from the opening 93a, over the gate 931, together with the wastewater, into the scum pit 92. The scum collected in the scum pit 92 is sent to a scum processor (not shown) where it is subjected to a predetermined process such as dehydration.

[0015] Next, the transfer device 1 will be described in detail with reference to FIGS.

[0016] Fig. 3 is a cross-sectional view of the transfer device 1 shown in Fig. 1 taken along line BB. In Fig. 3, the direction toward the front side of the paper surface is the discharge direction, and the left-right direction is the width direction.

[0017] 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 section 91, and the entire length is formed to be slightly shorter than the longitudinal length of the flowing water section 91. As shown in Fig. 1, the partition member 3 extends parallel or approximately parallel to the discharge direction, and as shown in Fig. 2, extends horizontally or approximately horizontally. As shown in Fig. 3, the partition member 3 separates a peripheral region R1 around the flow path forming member 5 from another region R2 in the wastewater W flowing through the flowing water section 91, so that the peripheral region R1 is on the inside, and has an inlet 3a that is connected to the peripheral region R1 and submerged in the wastewater W. The partition member 3 of this embodiment has a cross-sectional arc shape obtained by cutting out approximately 1 / 3 of the upper part of a stainless steel cylinder having a diameter of 300 mm to 400 mm, and the inlet 3a that opens upward is formed in the cutout part. The widthwise opening length L3 of the inlet 3a (see FIG. 4(a)) is set to 275 mm or more and 375 mm or less. The upper end portion of the partition member 3 has a curved portion 31 that extends toward the center in the widthwise direction, and the peripheral region R1 on the inlet 3a side becomes narrower the closer it is to the inlet 3a.

[0018] As shown in FIG. 1 and FIG. 2, the flow path forming member 5 also extends in the discharge direction in the flow water portion 91, similar to the partition member 3, and its total length is formed to be approximately the same as that of the partition member 3. Also, as shown in FIG. 1, the flow path forming member 5 also extends parallel or approximately parallel to the discharge direction, and as shown in FIG. 2, it extends horizontally or approximately horizontally. As shown in FIG. 3, the flow path forming member 5 forms the flow path S and separates the flow path S from the peripheral region R1. Also, the flow path forming member 5 has an inlet port 5a that is connected to the flow path S and is submerged in the wastewater W. The flow path forming member 5 of this embodiment has a cross-sectional arc shape obtained by cutting out approximately 1 / 6 of the lower part of a stainless steel cylinder having a diameter of 150 mm or more and 200 mm or less, and the inlet port 5a that opens downward is formed in the cutout part. 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 within the peripheral region R1 and the upper end portion 51 is at approximately the same height as the inlet 3a. In this embodiment, the radial center of the flow path forming member 5 (conceptually shown with the reference symbol O in the drawing) is aligned with the radial center of the partition member 3. Therefore, the radial distance Di (approximately 75 mm in this embodiment) between the partition member 3 and the flow path forming member 5 is approximately the same at every point.

[0019] The discharge member 7 has a water supply pipe 70 connected to its rear end and a discharge port 7a at its tip, and as shown in FIG. 2, the discharge port 7a is inserted into the flow path forming member 5 (flow path S) from the upstream side in the discharge direction. Water supplied from the water supply pipe 70 to the discharge member 7 is discharged from the discharge port 7a in a horizontal or approximately horizontal direction (see the solid right-facing arrow in FIG. 2). In this 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 flow is generated once in the flow path S, the pressure of the water discharged from the discharge port 7a may be 0.1 MPa or less. The flow rate of the water discharged from the discharge port 7a is adjusted to 300 liters or more and 3000 liters or less per minute. Here, the water discharged from the discharge port 7a may be sewage received in a sewage treatment plant or tap water. In addition, fluids such as gas and gas-liquid mixtures other than water may be discharged from the discharge port 7a.

[0020] The discharge member 7 of this embodiment is formed by flattening the tip of a round pipe-shaped water supply pipe, and a long hole-shaped discharge port 7a is formed at the tip. By adopting the mode of forming the discharge port 7a by flattening the round pipe in this way, the production is easy. Also, as shown in FIG. 3, the widthwise opening length L1 of the discharge port 7a is set longer than the widthwise opening length L2 of the suction port 5a. Specifically, in this embodiment, the widthwise opening length L2 of the suction port 5a is about 100 mm, the widthwise opening length L1 of the discharge port 7a is about 120 mm, and the height H1 of the discharge port 7a is about 20 mm. By making the discharge port 7a in such a flat shape, a wider range in which the flow rate is increased can be secured than in a case of a perfect circle shape. In some cases, it may be preferable to adopt a perfect circle discharge port 7a by not crushing the tip of the round pipe-shaped water supply pipe and using the round pipe-shaped water supply pipe as it is.

[0021] Here, the height of the water surface WL of the flowing water section 91 varies depending on the amount of wastewater received from the grit basin, and the height position at which the transfer device 1 is installed is set in consideration of the variation in the height of the water surface WL. Specifically, even if the height of the water surface WL of the flowing water section 91 varies, the inlet 3a of the partition member 3 is set to be lower than the water surface WL, the depth Dp1 from the water surface WL is within 200 mm, the center of the height direction of the discharge port 7a is set to be 50 mm or more and 300 mm or less in the depth Dp2 from the water surface WL, and the suction port 5a of the flow path forming member 5 is set to be 100 mm or more and 400 mm or less in the depth Dp3 from the water surface WL. Also, the inlet 3a of the partition member 3 is located above the lower end portion of the opening 93a in the blocking wall 93, as shown by the dashed line in FIG. 2.

[0022] The transfer device 1 may be fixed in position, or may be configured such that the entire transfer device 1, or either the partition member 3 or the flow path forming member 5, is moved vertically in accordance with the fluctuation of the height of the water surface WL, as shown by the double arrows in Figs. 2 and 3. In this way, the positions of the inlet 3a and the suction port 5a can be made to follow the fluctuation of the height of the water surface WL and maintained at a constant depth from the water surface WL. The discharge port 7a may be moved vertically in accordance with the vertical movement of the flow path forming member 5, or the discharge port 7a may be fixed and only the flow path forming member 5 may be moved vertically. In addition, the transfer device 1 may be fixed, and the amount of wastewater received by the flow section 91 may be controlled so that the positions of the inlet 3a and the suction port 5a are maintained at a constant depth from the water surface WL.

[0023] In the transfer device 1 configured as above, the scum Sc is transferred by discharging water from the discharge port 7a as shown in Fig. 1 and Fig. 2. Specifically, when water is discharged from the discharge port 7a into the flow path S of the flow path forming member 5, the scum Sc is drawn into the flow of the discharged water, and as shown in Fig. 3, a flow of water is generated in a direction in which the scum Sc is sucked into the flow path S from the suction port 5a. This generates a flow of water flowing from the inlet 3a into the peripheral region R1, and a flow of water toward the suction port 5a is generated within the peripheral region R1. As a result, a flow is generated on the water surface WL of the flowing water portion 91 in a direction gathering at the inlet 3a of the partition member 3 (a flow is generated on the water surface WL near the inlet 3a in a direction toward the inlet 3a, and a flow is generated by the water in other places supplementing this flow).

[0024] 1 and 2, the flow of scum Sc is shown in a schematic manner, in which scum floating in a lump on the water surface is marked with the symbol Sc0 and lightly shaded, and scum Sc separated from the lump Sc0 of scum is surrounded by a dashed line and darkly shaded. The scum floating in a lump over the entire water surface WL (see FIGS. 2 and 3) of the flowing water section 91 is partially broken down by a flow on the water surface in the direction of gathering at the inlet 3a, and becomes small lumps of scum Sc, which flow from the inlet 3a into the peripheral region R1. By repeating this process, a region where scum has been removed (a removal region on the water surface) is generated on the water surface WL along the extension direction of the partition member 3, i.e., the transport direction, as shown in FIG. 1. The scum Sc separated from the lump Sc0 of scum flows through the removal region on the water surface in the transport direction and gathers near the blocking wall 93. In addition, as the scum Sc flows through the removal area on the water surface, it comes into contact with the scum clumps Sc0 and breaks up part of it, and the broken up scum Sc also flows into the surrounding area R1 from the inlet 3a or flows through the removal area on the water surface in the transport direction, and this action is repeated.

[0025] 3, the scum Sc that has gathered at the inlet 3a flows from the inlet 3a into the peripheral region R1, flows through the peripheral region R1 toward the suction port 5a, and is then sucked into the flow path S from the suction port 5a. Here, it is preferable to set the depth of the suction port 5a from the water surface WL to 20 mm or more, because this allows the scum Sc to flow more smoothly from the suction port 5a.

[0026] In the wastewater 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 inlet 3a into the peripheral region R1 is promoted, and the scum Sc floating on the water surface WL can be efficiently caused to flow into the peripheral region R1. Furthermore, because the peripheral region R1 is separated from the other region R2 by the partition member 3, the flow of water from the inlet 3a to the suction port 5a within the peripheral region R1 is not impeded, and the scum Sc that has flowed into the peripheral region R1 flows within the peripheral region R1 and is smoothly sucked in from the suction port 5a.

[0027] Furthermore, as shown in FIG. 1 and FIG. 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 is blown out from the downstream end 52 of the flow path forming member 5 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 near the blocking wall 93, and by opening the gate 931, the scum Sc gathered near the blocking wall 93 is collected in the scum pit 92 together with the wastewater. Here, the flow of water once generated in the flow path S by discharging water from the discharge port 7a is not easily attenuated because the flow path S is surrounded by the flow path forming member 5, and the scum Sc can be transported a long distance. As a result, the number of the discharge port 7a and the supply pipe 70 that supplies water to the discharge port 7a can be reduced, and a simple structure can be adopted. Furthermore, the amount of water discharged from the discharge port 7a can be reduced.

[0028] If the flow path forming member 5 is long, the discharge member 7 may be provided in the middle of the flow path forming member 5 in the extending direction, as shown by the dashed line in Fig. 1. Furthermore, if the length of the width direction of the flowing water section 91 is long, a plurality of flow path forming members 5 and partition members 3 may be arranged side by side in the width direction of the flowing water section 91, and a discharge member 7 that discharges water into the flow path S of each flow path forming member 5 may be provided, or a mode in which the transfer device 1 is movable in the width direction, as shown by the double-headed arrow in Fig. 1, may be used.

[0029] 2, the flow path forming member 5 and the partition member 3 may be arranged in an inclined position (inclined position so that the downstream side in the discharge direction is higher) so as to approach the water surface WL as they approach the downstream side in the discharge direction, and water may be discharged from the discharge port 7a into the flow path S along the inclined position of the flow path forming member 5. By adopting this mode, the flow of water generated in the flow path S by discharging water from the discharge port 7a is less likely to attenuate, and the scum Sc can be transported a longer distance. Note that, since a relatively strong water flow is generated in the portion of the flow path S close to the discharge port 7a, even if the position of the inlet 3a is somewhat deeper than the water surface WL, a problem such as the scum Sc floating on the water surface WL being less likely to flow in from the inlet 3a is unlikely to occur.

[0030] Next, modified examples of the transfer device shown in Figures 1 to 3 will be described with reference to Figures 4 to 10. In the modified examples described below, differences from the embodiment shown in Figures 1 to 3 will be mainly described, and components having the same names as those in the embodiment shown in Figures 1 to 3 will be described with the same reference numerals used so far, and duplicated descriptions may be omitted. Also, Figures 4 to 10 show a state corresponding to Figure 3, and in order to simplify the drawings, only the discharge port 7a of the discharge member 7 is shown, and the cross-sectional shapes of the partition member 3 and the flow path forming member 5 are shown typically.

[0031] 4(a) is a diagram showing a transfer device of a first modified example. In this modified example, 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 lower than the inlet 3a of the partition member 3, that is, so that the upper end portion 51 of the flow path forming member 5 is deeper from the water surface WL than the inlet 3a of the partition member 3. 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 rate of the 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 in from the suction port 5a.

[0032] Also, as shown by the dashed line, a pipe material with a small diameter may be used for the flow path forming member 5, and the inlet 3a formed by cutting out the upper part of the pipe material may have a widthwise opening length L3 shorter than the widthwise opening length L2 of the suction port 5a. This increases the flow rate of the water flowing into the inlet 3a, and allows the scum Sc to flow more smoothly from the inlet 3a. Note that the partition member 3 shown by the dashed line in FIG. 4(a) has its radial center aligned with the radial center of the flow path forming member 5, so that the radial distance Di between the partition member 3 and the flow path forming member 5 is approximately the same at every point. However, as with the partition member 3 shown by the solid line, the position of the flow path forming member 5 may be lowered, and the distance Di may become narrower toward the suction port 5a.

[0033] 4(b) is a diagram showing a transfer device of a second modified example. In this modified example, 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 inlet 3a of the partition member 3. As a result, the upper side portion S1 of the flow path S is located above the inlet 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 modified example, a wide peripheral region R1 can be secured.

[0034] Also, as shown by the dashed line, the partition member 3 may be formed using a small diameter pipe material, and its radial center may be aligned with the radial center of the flow path forming member 5, so that the radial distance Di between the partition member 3 and the flow path forming member 5 is the same at every point. The flow path forming member 5 may be disposed so that its upper end portion 51 is located above the water surface WL. However, since the portion of the flow path forming member 5 protruding above the water surface WL blocks the widthwise water flow at the water surface WL, it is preferable to dispose the flow path forming member 5 at a position where the upper end portion 51 is submerged in water. Furthermore, 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 deposited on the upper end portion 51, which is preferable.

[0035] FIG. 5(a) is a diagram showing a transfer device of a third modified example. The transfer device 1 of the third modified example is different from the transfer device 1 shown in FIG. 3 in that it includes a partition member 3 and a flow path forming member 5, both of which are flat. 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. 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, the partition member 3 and the flow path forming member 5 in this modified example are flat in shape, with the dimension in the width direction perpendicular to the discharge direction in the horizontal plane being longer than the dimension in the height direction. In this way, by adopting a partition member 3 having a flat shape, it becomes easy to make the inlet 3a wider in the width direction. By making the inlet 3a wider in the width direction, the scum Sc floating in a wider range of the water surface WL can be made to flow into the peripheral region R1. In addition, by adopting a partition member 3 and a flow path forming member 5, both of which have a flat shape, it becomes difficult to impede the flow of the wastewater W in the flow section 91 (see FIG. 1), and it is also possible to reduce resistance to the flow of the wastewater W.

[0036] As shown by the dashed 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 inlet 3a of the partition member 3. Moreover, instead of the flat partition member 3, as shown by the dashed line, the partition member 3 shown in FIG. 3 described above may be used.

[0037] Fig. 5(b) is a diagram showing a transfer device of a fourth modified example. In the transfer device 1 of this modified example, the flow path forming member 5 and the partition member 3 are arranged such that the upper end portion 51 of the flow path forming member 5 is higher than the inlet 3a of the partition member 3 in the transfer device 1 of the third modified example shown in Fig. 5(a). As a result, the upper side portion S1 of the flow path S is located above the inlet 3a. Note that, instead of the flow path forming member 5 having a flat shape, the flow path forming member 5 shown in Fig. 3 described above may be used, as indicated by the dashed line.

[0038] FIG. 6(a) is a diagram showing a transfer device of a fifth modified example. 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. 3. As shown in FIG. 6(a), 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 a U-shaped cross section with an open upper portion. Here, if the inner circumferential surface of the partition member 3 is arc-shaped as in the embodiment shown in FIG. 3 and the modified examples shown in FIG. 4 and FIG. 5, depending on the size relationship between the partition member 3 and the flow path forming member 5 and the opening length L3 of the inlet 3a of the partition member 3 (see FIG. 4(a)), the partition member 3 and the flow path forming member 5 may interfere with each other when one of the partition member 3 and the flow path forming member 5 is moved in the vertical direction. According to this modification, since the wall portion 32 standing vertically is located to the side of the flow path forming member 5, as shown by the double-headed arrow in the figure, the partition member 3 and the flow path forming member 5 are less likely to interfere with each other when one of the partition member 3 and the flow path forming member 5 is moved in the vertical direction. This improves the degree of freedom when moving one of the partition member 3 and the flow path forming member 5 in the vertical direction. Also, the partition member 3 is easier to manufacture.

[0039] The partition member 3 and the flow path forming member 5 may be disposed so that the upper end portion 51 of the flow path forming member 5 is at the same height as the inlet 3a of the partition member 3, or, as indicated by the dashed dotted line, the upper end portion 51 of the flow path forming member 5 may be set at a position lower than the inlet 3a of the partition member 3. As indicated by the dashed dotted line, the partition member 3 may be formed such that the upper end portion 321 of the wall portion 32 is curved so as to expand outward in the width direction, or an arc-shaped corner portion 34 may be provided at the connecting portion between the wall portion 32 and the bottom portion 33.

[0040] Fig. 6(b) is a diagram showing a transfer device of a sixth modified example. In the transfer device 1 of this modified example, the flow path forming member 5 and the partition member 3 are arranged so that the inlet 3a of the partition member 3 is lower than the upper end portion 51 of the flow path forming member 5 in the transfer device 1 of the fifth modified example shown in Fig. 6(a). Note that, as shown by the dashed dotted line, the bottom portion 33 of the partition member 3 may be formed in a circular arc shape that is convex downward.

[0041] FIG. 7(a) is a diagram showing a transfer device of a seventh modified example. In this modified example, the shape of the partition member 3 is different from that of the transfer device 1 shown in FIG. 3. As shown in FIG. 7(a), the partition member 3 of this modified example has a second curved portion 35 at the upper end portion, which is curved so as to expand outward in the width direction. This widens the inlet 3a of the partition member 3, and allows the scum Sc floating in a wider range of the water surface WL to flow from the inlet 3a into the peripheral region R1. In addition, as shown by the dashed line, the flow path forming member 5 may be disposed at a position where the upper end portion 51 of the flow path forming member 5 is lower than the inlet 3a of the partition member 3.

[0042] FIG. 7(b) is a diagram showing a transfer device of an eighth modified example. In the transfer device 1 of this modified example, the partition member 3 and the flow path forming member 5 are arranged so that the upper end portion 51 of the flow path forming member 5 is higher than the inlet 3a of the partition member 3 in the transfer device 1 of the seventh modified example shown in FIG. 7(a). In addition, in this modified example, the part where the radial interval Di between the partition member 3 and the flow path forming member 5 is narrowest is set to be approximately the same as the opening length L2 in the width direction of the suction port 5a. Note that, as shown by the dashed line, a partition member 3 with a small diameter may be adopted, and the radial interval Di between the second curved portion 35 and the flow path forming member 5 may be made shorter than the opening length L2 in the width direction of the suction port 5a to increase the flow rate of water passing through this interval Di.

[0043] 8 is a diagram showing a transfer device of a ninth modified example. In this modified example, the depth Dp1 from the water surface WL and the opening length L3 of the inlet 3a, and the depth Dp3 from the water surface WL and the opening length L2 of the suction port 5a can be adjusted while the depths from the water surface WL of the upper end portion 51 of the flow path forming member 5 and the outlet port 7a are kept constant.

[0044] As shown in Fig. 8(a) surrounded by a dashed double-dashed line rectangle, the partition member 3 has a pair of partition member constituents 30 each having a half-arc shape, and as shown in Fig. 8(a) and Fig. 8(b), the partition member 3 is configured by partially overlapping the pair of partition member constituents 30 with each other. In Fig. 8(a) and Fig. 8(b), the overlapping portion of the pair of partition member constituents 30 is indicated by the symbol β. The pair of partition member constituents 30 rotate around the center O in the radial direction as the rotation center, and the size of the overlapping portion β can be changed.

[0045] From the state of the partition member 3 shown in FIG. 8(a), when the overlapping portion β is reduced as shown in FIG. 8(b), the depth Dp1 of the inlet 3a from the water surface WL becomes shallower and the opening length L3 of the inlet 3a becomes narrower. Conversely, although not shown, when the overlapping portion β is increased, the depth Dp1 of the inlet 3a from the water surface WL becomes deeper and the opening length L3 of the inlet 3a becomes wider. In this way, by changing the size of the overlapping portion β of the pair of partition member constituents 30, the depth Dp1 of the inlet 3a from the water surface WL and the opening length L3 can be adjusted. Note that, in FIG. 8, an example has been described in which the depth Dp1 of the inlet 3a from the water surface WL is adjusted when the height of the water surface WL is constant, but an embodiment in which the depth Dp1 of the inlet 3a from the water surface WL is adjusted to be constant in accordance with the fluctuation of the height of the water surface WL may also be used.

[0046] 8(a) and 8(b), the flow path forming member 5 includes a flow path forming member main body 50 having an arc-shaped cross section with approximately 1 / 3 of the lower part of a cylinder cut away, and a pair of slide pieces 53 provided at both ends of the cut-out part of the flow path forming member main body 50. Each of the pair of slide pieces 53 has a 1 / 5 arc shape, and the lower end part protrudes downward from the flow path forming member main body 50, with the suction port 5a being formed between these lower end parts. Each of the pair of slide pieces 53 slides along the inner peripheral surface 50a of the flow path forming member main body 50, thereby making it possible to adjust the depth Dp3 from the water surface WL and the opening length L2 of the suction port 5a.

[0047] Specifically, when each of the pair of slide pieces 53 is slid inward (upward) of the flow path forming member main body 50 from the state of the flow path forming member 5 shown in Fig. 8(a) as shown by the dotted arc-shaped arrows in Fig. 8(b), the depth Dp3 of the suction port 5a from the water surface WL becomes shallower and the opening length L2 of the suction port 5a becomes wider. Conversely, although not shown, when each of the pair of slide pieces 53 is slid outward (downward) of the flow path forming member main body 50, the depth Dp3 of the suction port 5a from the water surface WL becomes deeper and the opening length L2 of the suction port 5a becomes narrower.

[0048] 8 may be applied to the flow path forming member 5, or vice versa. Also, by dividing the pair of partition member constituents 30 or the slide pieces 53 into a plurality of parts in the discharge direction and adjusting each of them, for example, the depth Dp1 of the inlet 3a from the water surface WL and the opening length L2 of the suction port 5a can be made different between the upstream side in the discharge direction and the downstream side in the discharge direction.

[0049] FIG. 9 is a diagram showing a transfer device of a tenth modified example. In the transfer device 1 of this modified example, the flow path forming member 5 is connected to one end (the end on the left side in the figure) of the partition member 3 in the width direction, and is supported by the partition member 3 in a so-called cantilevered state. As shown by the rectangle surrounded by two-dot chain lines, conceptually, the flow path forming member 5 and the partition member 3 each have a common part 4 shown by a dotted line, which is a part that is common to each other. This makes it easier to ensure the radial distance Di between the partition member 3 and the flow path forming member 5. In addition, in this modified example, the inner circumferential surface 4a is configured as a continuous curved surface from the partition member 3 to the flow path forming member 5. This makes the flow of water from the inlet 3a of the partition member 3 toward the suction port 5a flow smoothly along the inner circumferential surface 4a, and the scum Sc can be smoothly sucked from the suction port 5a of the flow path forming member 5. The height (depth from the water surface WL) of the upper end portion 51 of the flow path forming member 5 may be different from the height (depth from the water surface WL) of the other end in the width direction of the partition member 3 (the right end in the figure). However, it is preferable to make the height of the upper end portion 51 of the flow path forming member 5 the same as the height of the other end in the width direction of the partition member 3, as shown in Figure 9, because this makes it easier for scum Sc to flow into the inlet 3a from both sides in the width direction.

[0050] FIG. 10 is a diagram showing a transfer device of an eleventh modified example. In this modified example, the partition member 3 is omitted, and the flow path forming member 5 is disposed in a position in which its suction port 5a faces upward. In this modified example, when water is discharged from the discharge port 7a into the flow path S of the flow path forming member 5, the water is drawn into the flow of the discharged water, and as shown in FIG. 10, a flow of water is generated in a direction in which the water is sucked into the flow path S from the suction port 5a. As a result, as shown conceptually in FIG. 10, the flow of the scum Sc, the scum Sc floating on the water surface WL of the flowing water section 91, gathers toward the suction port 5a and is sucked into the flow path S from the suction port 5a. The scum Sc sucked into the flow path S moves in the transfer direction by the flow of the water discharged from the discharge port 7a.

[0051] As shown by the arc-shaped double-headed arrow, the flow path forming member 5 may be rotated around the center O in the radial direction as the rotation center, and the direction in which the suction port 5a opens as shown by the straight arrow may be changed within the range of angle α. As shown by the dashed line, the flat flow path forming member 5 in the transfer device 1 of the third modified example in FIG. 5(a) may be used as the flow path forming member 5. In the embodiment shown in FIG. 3 and the modified example having the partition member 3 shown in FIG. 4 and the like, the partition member 3 may be rotated around the center in the radial direction as the rotation center.

[0052] Next, a second embodiment of the transfer device of the present invention, which is different from the equipment to be installed, will be described. In the second embodiment described below, the same components as those in the embodiment shown in Figures 1 to 3 will be described with the same reference numerals as those used so far, and duplicated descriptions may be omitted.

[0053] 11 is a schematic diagram of an inverted overpass structure provided with a transfer device according to a second embodiment of the present invention. The inverted overpass structure refers to a structure in which, when a sewer pipe crosses a river, a railway, etc., an inverted overpass pipe is provided at a position lower than the river, etc., and sewage is allowed to flow by utilizing the water level difference between the upstream and downstream pipes.

[0054] In FIG. 11, the overpass 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 outline arrow in the figure, the direction from left to right is the flow direction of the sewage DR. As shown in FIG. 11, the overpass structure 8 is provided with an upstream pipe 81, an upstream manhole 82, an overpass pipe 83, a downstream manhole 84, and a downstream pipe 85 in the order of description from the upstream side to the downstream side of the flow of the sewage DR. The upstream pipe 81 is connected to the upstream manhole 82, and the overpass pipe 83 is connected to the upstream manhole 82 and the downstream manhole 84 at a position lower than the river Ri. The downstream pipe 85 is connected to the downstream manhole 84 at a position lower than the position where the upstream pipe 81 is connected to the upstream manhole 82. Note that soil and sand pools 821 and 841 are formed at the bottom of the upstream manhole 82 and the bottom of the downstream manhole 84, respectively.

[0055] The sewage DR flowing through the upstream pipeline 81 flows through the upstream manhole 82, the inverted overflow pipe 83, and further through the downstream manhole 84 to the downstream pipeline 85 due to the so-called reverse siphon effect caused by the difference in water level between the upstream pipeline 81 and the downstream pipeline 85.

[0056] 1 to 3, the upstream pipe 81 is provided with a transfer device 1 having the same configuration as the transfer device 1 shown in Fig. 1 to 3. In this transfer device 1, the downstream end 52 of the flow path forming member 5 is located near the area where the upstream pipe 81 is connected to the upstream manhole 82. As in the transfer device 1 shown in Fig. 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 transferred toward the upstream manhole 82, and is blown out from the downstream end 52 of the flow path forming member 5, whereby it is collected on the water surface WL of the sewage DR in the upstream manhole 82.

[0057] The scum Sc collected on the water surface WL of the sewage DR in the upstream manhole 82 is removed by opening the iron cover of the upstream manhole 82, and a part of it is drawn into the flow of the sewage DR and flows into the overflow pipe 83. Sand and the like that have settled in the soil and sand pit 821 also flows into the overflow pipe 83 by the flow of the sewage DR. The overflow pipe 83 is provided with a transfer device 1 having the same configuration as the transfer device 1 shown in Figures 1 to 3, and a sediment transfer device 2 that transfers sediment such as the settling sand.

[0058] Fig. 12 is a cross-sectional view of the concealed passing pipe taken along line CC shown in Fig. 11. In Fig. 12, both side regions in the width direction and a middle region in the up-down direction of the concealed passing pipe 83 are omitted.

[0059] 12, the inverted overpass pipe 83 is filled with sewage DR, and the water surface WL of the sewage DR is in contact with the ceiling surface 831 of the inverted overpass pipe 83. In the transfer device 1, the depth Dp1 from the water surface WL, i.e., the ceiling surface 831, at the inlet 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. If the depth Dp1 from the water surface WL is less than 20 mm, scum Sc is likely to get caught between the ceiling surface 831 of the inverted overpass pipe 83 and the inlet 3a of the partition member 3, or between the ceiling surface 831 of the inverted overpass pipe 83 and the upper end portion 51 of the flow path forming member 5, which is not preferable.

[0060] 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 water flow occurs in a direction in which the water is sucked into the flow path S from the suction port 5a, a water flow occurs in which the water flows into the peripheral region R1 from the inlet 3a, and a water flow occurs in the peripheral region R1 toward the suction port 5a. As a result, a flow occurs in the water surface WL (near the ceiling surface 831) in a direction in which the water gathers at the inlet 3a of the partition member 3, and the scum Sc floating near the ceiling surface 831 gathers and flows into the peripheral region R1 from the inlet 3a. The scum Sc that flows into the peripheral region R1 is sucked into the flow path S from the suction port 5a, and the sucked scum Sc is transported to the downstream manhole 84. This can solve the problem that the scum Sc adheres to the ceiling surface 831 of the inverted pipe 83 and remains in the inverted pipe 83.

[0061] A sediment transfer device 2 for transferring sediment is provided on a bottom surface 832 at the bottom side of the overhanging pipe 83. The bottom of the overhanging pipe 83 is repaired, and a pair of inclined surfaces 833 inclined downward toward the sediment transfer device 2 are provided by the portion repaired with concrete, which is shown by cross-hatching. The sediment transfer device 2 includes a trough 21, a bottom-side flow passage forming member 25, and a bottom-side discharge member 27. The trough 21 forms a groove M extending in a direction from the upstream manhole 82 toward the downstream manhole 84 (see FIG. 11) at the bottom side of the overhanging pipe 83. The portion of the trough 21 that opens upward becomes an 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-side flow passage forming member 25 extends in the same direction as the trough 21, and its total length is formed to be approximately the same as that of the trough 21. The bottom side flow passage forming member 25 forms the bottom side flow passage S2 and separates the bottom side flow passage S2 from the groove M. The bottom side flow passage forming member 25 has an intra-groove suction port 25a that is connected to the bottom side flow passage S2 and is located within the groove M. The bottom side discharge member 27 has a bottom side discharge port 27a, and water is discharged from the bottom side discharge port 27a into the bottom side flow passage S2.

[0062] Sediment such as sand contained in the sewage DR that has flowed into the overflow pipe 83 settles as the sewage DR flows downstream, and flows down along the inclined surface 833 toward the trough 21. The sediment that flows down from the inclined surface 833 enters the groove M from the opening 21a of the trough 21. In addition, sand and the like that has accumulated in the soil and sand pool 821 of the upstream manhole 82 shown in FIG. 11 may also enter the groove M.

[0063] When water is discharged from the bottom-side discharge port 27a into the bottom-side flow path S2, sediment that is drawn into the flow of the discharged water and accumulated at the bottom of the groove M is sucked into the bottom-side flow path S2 from the groove suction port 25a as shown by the curved arrow in Fig. 12. Furthermore, in the bottom-side flow path S2 of the bottom-side flow path forming member 25, the sucked sediment moves toward the downstream side in the discharge direction (the downstream manhole 84 side) by the flow of the water discharged from the bottom-side discharge port 27a. This allows sediment such as sand to be transported to the sediment pool 841 of the downstream manhole 84 without remaining in the overflow pipe 83.

[0064] The present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the claims.

[0065] In addition, even if a component is included only in the description of each of the embodiments and modified examples described above, that component may be applied to other embodiments or other modified examples.

[0066] The transfer device described above includes a flow path forming member having a suction port connected to the flow path and submerged in water; a discharge port that discharges a fluid into the flow path, the suction port functions as an opening that sucks an object to be transferred floating on the water surface into the flow path by discharging a fluid into the flow path, The flow path is characterized in that it functions as a path along which the object to be transported, sucked into the flow path, moves toward the downstream side in the discharge direction of the fluid as the fluid is discharged into the flow path.

[0067] Further, in the transfer device, a partition member is provided which separates a peripheral area around the flow path forming member in water from another area so that the peripheral area is on the inside, and which has an inlet connected to the peripheral area, the inlet functions as an opening that allows the object to be transferred, floating 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 that sucks the transported object that has flowed into the peripheral area into the flow path by discharging a fluid into the flow path.

[0068] The transfer device described above forms a flow path, and includes a pipe-shaped flow path forming member that is connected to the flow path and has an inlet port that is submerged in water and extends approximately parallel to the water surface; a discharge port disposed within the flow path, the discharge port discharging a fluid in an axial direction of the flow path forming member, the suction port extends in an extension direction of the flow path forming member, and functions as an opening that sucks a transported object floating on the water surface into the flow path by discharging a fluid into the flow path, The flow path is characterized in that it functions as a path along which the object to be transported, sucked into the flow path, moves toward the downstream side in the discharge direction of the fluid as the fluid is discharged into the flow path.

[0069] Further, in the transfer device, a peripheral area around the flow path forming member in water is partitioned from other areas so that the peripheral area is on the inside, and a pipe-shaped partition member is provided which has an inlet connected to the peripheral area and extends substantially parallel to the water surface, the inlet is configured to face upward and functions as an opening that allows the object to be transferred floating on the water surface to flow into the peripheral region by discharging a fluid into the flow path; The suction port may open within the peripheral region and function as an opening that sucks the transported object that has flowed into the peripheral region into the flow path by discharging a fluid into the flow path.

[0070] Furthermore, the transport device may be movable in a direction perpendicular to the discharge direction of the fluid within a horizontal plane.

[0071] In this way, the objects to be transferred floating over a wider area on the water surface can be caused to flow into the surrounding area from the inlet and transferred without increasing the number of transfer devices.

[0072] The transfer device described above forms a flow path, and the a pipe-shaped flow path forming member extending substantially parallel to the water surface, and a discharge port for discharging a fluid in the axial direction of the flow path forming member, the suction port is configured to face upward, extends in an extending direction of the flow path forming member, and functions as an opening that sucks an object to be transferred floating on the water surface into the flow path by discharging a fluid into the flow path, The flow path is characterized in that it functions as a path along which the object to be transported, sucked into the flow path, moves toward the downstream side in the discharge direction of the fluid as the fluid is discharged into the flow path.

[0073] Here, the flow path forming member may be one in which the suction port opens toward the water surface from a position lower than the water surface and is located at a depth of 200 mm or less from the water surface. The flow path forming member may be one in which the suction port opens toward a direction other than the water surface. Furthermore, when the height of the water surface changes, the flow path forming member may be one that can move in a vertical direction to change the height of the suction port. Furthermore, the flow path may be one in which the portion on the suction port side becomes narrower as it approaches the suction port. Furthermore, the flow path forming member may be one in which a part of a cylinder is cut out. Furthermore, the discharge port may be one in a perfect circle or one in a flat shape, and the discharge port may be provided in a plurality of spaces in the discharge direction. Furthermore, the fluid discharged from the discharge port may be a liquid or a gas, or may be a gas-liquid mixture. Furthermore, the discharge port may be one that discharges 300 liters or more and 3000 liters or less of fluid per minute at a pressure of 0.3 MPa or less.

[0074] According to this transfer device, when a fluid is discharged from the discharge port into the flow path, the object to be transferred, which is drawn into the flow of the discharged fluid and floats on the water surface, is sucked into the flow path from the suction port. Furthermore, in the flow path, the object to be transferred that is sucked in moves toward the downstream side in the discharge direction due to the water flow generated by the fluid. Since the flow path is surrounded by the flow path forming member, the water flow once generated in this way is much less likely to attenuate compared to the air flow or wind current in the transfer device described in Patent Document 1, and the object to be transferred can be transported a long distance. Furthermore, a flow is generated on the water surface in a direction that is sucked into the suction port, and the object to be transferred that floats on the water surface can be sucked into the flow path over a wide area.

[0075] Furthermore, due to the flow on the water surface in the direction of being sucked into the suction port, a region on the water surface from which the transferred objects have been removed may be generated in a state extending in the transfer direction. Hereinafter, the region on the water surface from which the transferred objects have been removed may be referred to as the removal region on the water surface. When the transfer device is installed in, for example, a conduit that flows the received wastewater in the transfer direction, a flow in the transfer direction is also generated on the water surface due to the flow of the received wastewater, and this flow causes scum (transferred objects) to flow in the transfer direction in the removal region on the water surface. In addition, when the scum flowing in the removal region on the water surface comes into contact with the scum floating in a collected state on the water surface, a part of it breaks down, and the broken part is sucked in from the suction port and moves in the flow path, or flows in the removal region on the water surface and moves in the transfer direction. As a result, the scum floating in a collected state on the water surface can be efficiently transferred while breaking down little by little.

[0076] As a result, the number of the outlets and the piping for supplying the fluid to the outlets can be reduced, and a simple structure can be adopted. Furthermore, the amount of fluid discharged from the outlets can be reduced. As described above, it is sufficient that the water flow is generated once in the flow path, so that the pressure of the fluid discharged from the outlets may be as low as 0.1 MPa or less.

[0077] The transfer device described above forms a flow path, and includes a pipe-shaped flow path forming member that is connected to the flow path and has an inlet port that is submerged in water and extends approximately parallel to the water surface; a discharge port that discharges a fluid into the flow passage in an axial direction of the flow passage forming member; a pipe-shaped partition member that partitions a peripheral area around the flow path forming member and another area underwater so that the peripheral area is on the inside, has an inlet connected to the peripheral area, and extends approximately parallel to the water surface; the inlet is configured to face upward and functions as an opening that allows a transport object floating on the water surface to flow into the peripheral region by discharging a fluid into the flow path; the suction port is an opening facing downward within the peripheral region, and functions as an opening that sucks the transported object that has flowed into the peripheral region into the flow path by discharging a fluid into the flow path, The flow path is characterized in that it functions as a path along which the object to be transported, sucked into the flow path, moves toward the downstream side in the discharge direction of the fluid as the fluid is discharged into the flow path.

[0078] Here, the partition member may be one in which the inlet opens toward the water surface from a position lower than the water surface and is located at a depth of 200 mm or less from the water surface. Furthermore, when the height of the water surface changes, the partition member may be one that can move vertically to change the height of the suction port. Furthermore, the peripheral area may be one in which the portion on the inlet side becomes narrower as it approaches the inlet. Furthermore, the partition member may have a curved portion at the upper end portion that enters the center side in the width direction. Furthermore, the flow path forming member may be one in which the suction port opens within the peripheral area and the upper end portion is located at approximately the same height as the inlet, one located below the inlet, or one located above the inlet. Furthermore, the partition member may be a shape in which the upper end portion of a cylinder is cut out. Furthermore, the partition member and the flow path forming member may be one in which the inner circumferential surface is configured as a continuous curved surface from the partition member to the flow path forming member. In addition, the flow path forming member may be connected to one end side of the partition member in the width direction, with a portion of the flow path forming member being shared with a portion of the partition member, while being spaced apart from the other end side.

[0079] When the embodiment including the partition member is adopted, the peripheral area is separated from other areas underwater by the partition member, so that the inflow of the object to be transferred from the inlet into the peripheral area is promoted, and the object to be transferred floating on the water surface can be efficiently flowed into the peripheral area. Furthermore, by separating the peripheral area from other areas by the partition member, the flow of water from the inlet to the suction port is not impeded, and the object to be transferred that has flowed into the peripheral area flows within the peripheral area and is smoothly sucked in from the suction port.

[0080] Furthermore, when the transfer device is installed in, for example, a water conduit that allows the received water to flow in the transfer direction, the flow of the received water also causes the scum (transferred material) to flow in the transfer direction through the removal area on the water surface. When the scum flowing through the removal area on the water surface comes into contact with the scum remaining in a mass on the water surface, part of it breaks down, and the broken part flows from the inlet into the surrounding area, and is sucked in through the suction port and moves within the flow path, or flows through the removal area on the water surface and moves in the transfer direction. As a result, the scum remaining in a mass on the water surface can be efficiently transferred while breaking down little by little.

[0081] In the transfer device, the flow path forming member may be flat and have a width dimension that is orthogonal to the discharge direction of the fluid in a horizontal plane greater than a height dimension.

[0082] In this way, by adopting a flow path forming member having a flat shape, it becomes easy to make the suction port wider in the width direction. By making the suction port wider in the width direction, the transported object floating over a wider area of ​​the water surface can be sucked into the flow path. In addition, by making the flow path forming member into a flat shape, the entire device can be made thin, and it can be suitably used in shallow waterways, etc. Furthermore, by making the flow path forming member into a flat shape, it becomes less likely to obstruct the flow of sewage, etc. in a water conduit, etc. in which the transfer device is installed, and it is also possible to reduce resistance to the flow of sewage, etc.

[0083] In the transfer device, the partition member may be flat and have a width dimension that is greater than a height dimension in a horizontal plane perpendicular to the discharge direction of the fluid.

[0084] In this way, by adopting a partition member having a flat shape, it becomes easy to make the inlet wider in the width direction. By making the inlet wider in the width direction, the objects to be transferred floating in a wider range of the water surface can be made to flow into the peripheral area. In addition, by making the partition member flat in shape, the entire device can be made thin, and it can be suitably used in shallow waterways and the like. Furthermore, by making the partition member flat in shape, it becomes less likely to impede the flow of sewage and the like in a conduit in which the transfer device is installed, and it is also possible to reduce resistance to the flow of sewage and the like.

[0085] The transfer device described above includes a flow path forming member having a suction port connected to the flow path and submerged in water; a discharge port that discharges a fluid into the flow path; an inlet extending substantially parallel to the water surface and submerged in the water is provided; and a partition member surrounding the flow path forming member; the inlet functions as an opening that allows a transport object floating on the water surface to flow into a region between the partition member and the flow path forming member by discharging a fluid into the flow path, the suction port functions as an opening that sucks the transferred object, which has flowed into a region between the partition member and the flow path forming member, into the flow path by discharging a fluid into the flow path, the flow path functions as a path along which the object to be transferred, which has been sucked into the flow path, moves toward a downstream side in a discharge direction of the fluid as the fluid is discharged into the flow path, The distance between the partition member and the flow path forming member is narrowed toward the suction port.

[0086] The transfer device described above forms a flow path, and includes a flow path forming member having an arc-shaped cross section and a suction port connected to the flow path and submerged in water provided at a lower portion thereof; a discharge port that discharges a fluid into the flow path; an inlet extending substantially parallel to the water surface and submerged in the water is provided at an upper portion; and a partition member having an arc-shaped cross section surrounding the flow path forming member; the flow path forming member extends substantially parallel to the partition member, the inlet functions as an opening that allows a transport object floating on the water surface to flow into a region between the partition member and the flow path forming member by discharging a fluid into the flow path, the suction port functions as an opening that sucks the transferred object, which has flowed into a region between the partition member and the flow path forming member, into the flow path by discharging a fluid into the flow path, the flow path functions as a path along which the object to be transferred, which has been sucked into the flow path, moves toward a downstream side in a discharge direction of the fluid as the fluid is discharged into the flow path, The radial distance between the partition member and the flow path forming member is narrowed toward the suction port. The transfer device described above includes a flow path forming member having a suction port connected to the flow path and submerged in water; a discharge port that discharges a fluid into the flow path; a partition member that is provided with an inlet that is submerged in water and that surrounds the flow path forming member; the inlet functions as an opening that allows a transport object floating on the water surface to flow into a region between the partition member and the flow path forming member by discharging a fluid into the flow path, the suction port functions as an opening that sucks the transferred object, which has flowed into a region between the partition member and the flow path forming member, into the flow path by discharging a fluid into the flow path, the flow path functions as a path along which the object to be transferred, which has been sucked into the flow path, moves toward a downstream side in a discharge direction of the fluid as the fluid is discharged into the flow path, the flow path forming member and the partition member are disposed in an inclined position so as to approach a water surface toward a downstream side in the discharge direction, The discharge port is characterized in that it discharges the fluid along the inclined posture of the flow path forming member. [Explanation of symbols]

[0087] 1 Transfer device 3 Partitioning material 3a Inlet 5 Flow path forming member 5a Intake port 51 Upper end part 7 Discharge member 7a Discharge port 9 Water culvert S flow path Sc Scum R1 Surrounding area W Sewage

Claims

[Claim 1] A flow path forming member that forms a flow path, has an inlet port that is connected to the flow path and is submerged in water, and has a cross-sectional arc shape formed by cutting out a part of a cylindrical shape; a discharge port having a long hole shape for discharging a fluid into the flow path; a partition member having an arc-shaped cross section formed by cutting out a part of a cylinder, the partition member having an inlet that is submerged in water and surrounding the flow path forming member; the inlet is formed linearly over the entire length of the partition member and functions as an opening that allows a transport object floating on the water surface to flow into a region between the partition member and the flow path forming member by discharging a fluid into the flow path, the suction port is formed linearly over the entire length of the flow path forming member, and functions as an opening that sucks the transported object that has flowed into a region between the partition member and the flow path forming member into the flow path by discharging a fluid into the flow path, the flow path functions as a path along which the object to be transferred, which has been sucked into the flow path, moves toward a downstream side in a discharge direction of the fluid as the fluid is discharged into the flow path, the flow path forming member and the partition member are disposed in an inclined position so as to approach a water surface toward a downstream side in the discharge direction, The discharge port is disposed in the flow passage forming member and discharges the fluid along the inclined posture of the flow passage forming member.

Images