JP2024059682A - Transport Equipment - Google Patents

Abstract

[Problem] To provide a transfer device capable of transferring a transfer target floating on the water surface with a simple structure while suppressing the amount of fluid discharged. [Solution] The device comprises a flow path forming member 5 having a suction port 5a connected to a flow path S and submerged in water, a discharge port 7a for discharging a fluid into the flow path S, and a partition member 3 having an inlet 3a submerged in water and surrounding the flow path forming member 5, the inlet 3a being an opening for allowing scum Sc floating on the water surface to flow into a peripheral region R1 between the partition member 3 and the flow path forming member 5, the suction port 5a being an opening for sucking the scum Sc that has flowed into the peripheral region R1 into the flow path S, the flow path S being a path along which the scum Sc sucked into the flow path S moves toward the downstream side in the discharge direction of the fluid, the flow path forming member 5 and the partition member 3 being disposed in an inclined position so as to approach the water surface as they approach the downstream side in the discharge direction, and the discharge port 7a for discharging the fluid along the inclined position of the flow path forming member 5. [Selected Figure] Figure 2

Description

The present invention relates to a transport device that transports an object floating on the water surface.

In the sewage treatment plant, water conduits and settling tanks are provided with transfer devices that transfer materials such as scum floating on the water surface to scum pits, etc. (see, for example, Patent Document 1, etc.).

Figure 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 is equipped with multiple spray nozzles 61 installed about 100 mm to 200 mm above the surface of the wastewater in a conduit 9 through which wastewater flows from the left side to the right side of the figure. These multiple spray nozzles 61 are arranged at predetermined intervals in the width direction of the conduit 9 (vertical direction in Figure 13), and are also arranged in multiple rows at predetermined intervals in the transfer direction of the scum Sc (transferred object) (direction from left to right in Figure 13). In the transfer device 6 described in Patent Document 1, pressurized water or air is ejected from the multiple 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 on the water surface toward the scum pit, and the scum floating on the water surface is transferred toward the scum pit or the like by this air current or the like.

Japanese Patent Application Laid-Open No. 7-303883

However, in the transfer device 6 described in Patent Document 1, the pressurized water discharged from the spray nozzle 61 is dispersed, making it difficult to generate an air current 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 a large number of pipes 62 are also required to supply the pressurized water to these many spray nozzles 61, making the device large-scale. In addition, a large amount of pressurized water is required to be discharged from the many spray nozzles 61. In addition, in the case of discharging air from the spray nozzle 61, the scum Sc may dry out and harden due to the discharged air. Another problem is that the scum Sc that has solidified in this way is less likely to move on the water surface, which means that even more air must be ejected.

In view of the above circumstances, the present invention aims to provide a transfer device that can transfer objects floating on the water surface with a simple structure while reducing the amount of fluid discharged.

The present invention provides a transfer device that achieves the above object, comprising: a flow path forming member that forms a flow path and has a suction port that is connected to the flow path and is 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 for sucking the object to be transferred, 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 passage 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,
A transfer device, characterized in that the discharge port discharges the fluid along the inclined posture of the flow path forming member.

The present invention provides a transfer device that can transfer objects floating on the water surface by reducing the amount of fluid discharged and using a simple structure.

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. 2 is a cross-sectional view of the water conduit shown in FIG. 1 taken along line AA. 2 is a cross-sectional view of the transfer device shown in FIG. 1 along line BB. FIG. 13A is a diagram showing a transfer device of a first modified example, and FIG. 13B is a diagram showing a transfer device of a second modified example. 13A is a diagram showing a transfer device of a third modified example, and FIG. 13B is a diagram showing a transfer device of a fourth modified example. 13A is a diagram showing a transfer device according to a fifth modified example, and FIG. 13B is a diagram showing a transfer device according to a sixth modified example. 13A is a diagram showing a transfer device of a seventh modified example, and FIG. 13B is a diagram showing a transfer device of an eighth modified example. FIG. 13 is a diagram showing a transfer device of a ninth modified example. FIG. 23 is a diagram showing a transfer device of a tenth modified example. FIG. 23 is a diagram showing a transfer device of an eleventh modified example. FIG. 11 is a schematic diagram of a crossing structure provided with a transfer device according to a second embodiment of the present invention. This is a cross-sectional view of the inverted pipe shown in Figure 11 along line CC. FIG. 2 is a schematic diagram of the transfer device described in Patent Document 1 as viewed from above.

The following describes an embodiment of the present invention with reference to the drawings. The transfer device of the present invention can be used in various facilities and structures that transfer materials floating on the water surface, and can be suitably applied to, for example, conduits and settling tanks in sewage treatment plants, or inverted sewer pipe structures. In this embodiment, a transfer device that is installed in the conduit of a first settling tank or a final settling tank and transfers scum floating on the water surface is described as an example. That is, in this embodiment, scum corresponds to an example of a material to be transferred. A 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 scum floating on the water surface is collected in a scum pit.

Figure 1 is a plan view of a conduit equipped with a transfer device according to one embodiment of the present invention, as seen from above, and Figure 2 is a cross-sectional view of the conduit shown in Figure 1 taken along line A-A. Note that Figure 1 also shows some of the multiple settling basins P into which wastewater is distributed from the conduit 9.

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 multiple settling tanks P arranged side by side 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.

1 and 2, the flow 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 flow section 91. As described in detail below, FIGS. 1 and 2 show that 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. That is, the scum Sc is transferred in the longitudinal direction of the flow 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 transport direction in which the scum Sc is transported. The short side direction of the flow section 91, i.e., the direction perpendicular to the discharge direction in the horizontal plane, may be referred to as the width direction hereinafter.

An opening 93a that communicates with the scum pit 92 is formed in the blocking wall 93, and a gate 931 that blocks this 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 that has collected near the blocking wall 93 flows together with the wastewater from the opening 93a over the gate 931 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.

Next, the transfer device 1 will be described in detail using Figures 1 to 3.

Figure 3 is a cross-sectional view of the transfer device 1 shown in Figure 1 taken along line B-B. In Figure 3, the direction toward the front of the page is the discharge direction, and the left-right direction 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 section 91, and its overall 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, it extends horizontally or approximately horizontally. As shown in Fig. 3, the partition member 3 separates the peripheral region R1 around the flow path forming member 5 from the other 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 in this embodiment is a stainless steel cylinder with a diameter of 300 mm to 400 mm, and has an arc-shaped cross section with approximately the upper 1/3 cut out, and the inlet 3a that opens upward is formed in the cut-out portion. 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. In addition, the partition member 3 has a curved portion 31 at the upper end portion that extends toward the center in the width direction, and the peripheral region R1 becomes narrower on the inlet 3a side as it approaches the inlet 3a.

1 and 2, the flow path forming member 5, like the partition member 3, extends in the discharge direction in the flow section 91, and its total length is formed to be approximately the same as that of the partition member 3. The flow path forming member 5 also extends parallel or approximately parallel to the discharge direction as shown in FIG. 1, and extends horizontally or approximately horizontally as shown in FIG. 2. 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. The flow path forming member 5 also has an inlet 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 with approximately 1/6 of the lower part of a stainless steel cylinder with a diameter of 150 mm to 200 mm cut out, and the inlet 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 symbol O in the figure) 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 location.

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 water flow is generated 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. In addition, 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 gases and gas-liquid mixtures other than water may be discharged from the discharge port 7a.

The discharge member 7 of this embodiment is a round pipe-shaped water supply pipe whose tip is flattened to form a long hole-shaped discharge port 7a at its 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 of increased flow rate can be secured than that of a perfect circle. In some cases, it may be preferable to use the round pipe-shaped water supply pipe as it is without crushing the tip of the round pipe-shaped water supply pipe and adopt a perfect circle-shaped discharge port 7a.

Here, the height of the water surface WL of the flow section 91 varies depending on the amount of wastewater received from the grit basin, and the height position of the transfer device 1 is set taking into consideration the variation in the height of the water surface WL. Specifically, even if the height of the water surface WL of the flow section 91 varies, the inlet 3a of the partition member 3 is set to be lower than the water surface WL, and the depth Dp1 from the water surface WL is within 200 mm, the center of the height direction of the outlet 7a is set to be 50 mm or more and 300 mm or less in depth 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 depth 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.

The transfer device 1 may be fixed in position, or the entire transfer device 1, or either the partition member 3 or the flow path forming member 5, may be moved vertically in accordance with the fluctuation of the height of the water surface WL, as shown by the double arrows in Figures 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.

In the transfer device 1 configured as described above, as shown in FIG. 1 and FIG. 2, the scum Sc is transferred by discharging water from the discharge port 7a. Specifically, as 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 the direction of being sucked into the flow path S from the suction port 5a. As a result, a flow of water is generated that flows 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 the direction of gathering at the inlet 3a of the partition member 3 (a flow is generated on the water surface WL near the inlet 3a in the direction toward the inlet 3a, and a flow is generated by the water in other places supplementing this).

1 and 2 show the flow of scum Sc in a schematic manner, with the scum floating on the water surface in a lump-like state being given the symbol Sc0 and lightly shaded, and the scum Sc separated from the scum lump Sc0 being surrounded by a dashed line and darkly shaded. The scum floating in a lump-like form over the entire water surface WL (see Figs. 2 and 3) of the flowing water section 91 is partially broken down by the 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, as shown in Fig. 1, 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. The scum Sc separated from the scum lump Sc0 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 masses Sc0, causing some of them to break down, and the broken scum Sc also flows into the peripheral 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.

As shown conceptually in Figure 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, as this allows the scum Sc to flow more smoothly from the suction port 5a.

In the wastewater W, the peripheral region R1 is separated from the other regions R2 by the partition member 3, which promotes the inflow of scum Sc from the inlet 3a into the peripheral region R1, and allows the scum Sc floating on the water surface WL to flow efficiently into the peripheral region R1. Furthermore, by separating the peripheral region R1 from the other regions 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 flows into the peripheral region R1 flows within the peripheral region R1 and is smoothly sucked in through the suction port 5a.

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 discharge ports 7a and the supply pipes 70 that supply 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.

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 extension direction, as shown by the dashed line in Figure 1. Furthermore, if the width of the flowing water section 91 is long, multiple 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 discharge members 7 that discharge water into the flow path S of each flow path forming member 5 may be provided, or the transfer device 1 may be made movable in the width direction, as shown by the double arrow in Figure 1.

Also, as shown by the two-dot chain line in FIG. 2, the flow path forming member 5 and the partition member 3 may be arranged in an inclined position (inclined 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 water flow 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 part 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, problems such as the scum Sc floating on the water surface WL being less likely to flow in from the inlet 3a are unlikely to occur.

Next, modified examples of the transfer device shown in Figures 1 to 3 will be described using 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 with the same names as those in the embodiment shown in Figures 1 to 3 will be described using 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 flow path forming member 5 are shown diagrammatically.

Figure 4(a) shows 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, i.e., 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, scum Sc can be more reliably sucked in from the suction port 5a.

Also, as shown by the dashed line, a small-diameter pipe material may be used for the flow path forming member 5, and the width direction opening length L3 of the inlet 3a formed by cutting out the upper part of the pipe material may be shorter than the width direction 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 all points. 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 be narrowed toward the suction port 5a.

Figure 4(b) shows 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 area R1 can be secured.

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 all points. The flow path forming member 5 may be arranged so that its upper end portion 51 is located above the water surface WL, but since the portion of the flow path forming member 5 that protrudes above the water surface WL blocks the widthwise water flow at the water surface WL, it is preferable to arrange the flow path forming member 5 in 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 accumulate on the upper end portion 51, which is preferable.

Figure 5 (a) is a diagram showing a transfer device of a third modified example. The transfer device 1 of this third modified example differs from the transfer device 1 shown in Figure 3 in that it is equipped with a partition member 3 and a flow path forming member 5, both of which are flat in shape. Specifically, the partition member 3 is formed by cutting out the upper end portion of a pipe having a height dimension of about 1/2 of its width dimension W1. Also, the flow path forming member 5 is formed by cutting out the 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 width dimension perpendicular to the discharge direction in the horizontal plane being longer than the height dimension. 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 using 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 Figure 1), and it is also possible to reduce resistance to the flow of the wastewater W.

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. Also, instead of the flat partition member 3, the partition member 3 shown in FIG. 3 may be used as shown by the dashed line.

Figure 5(b) is a diagram showing a transfer device of a fourth modified example. In this modified transfer device 1, 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 in the transfer device 1 of the third modified example shown in Figure 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 flat flow path forming member 5, the flow path forming member 5 shown in Figure 3 described above may be used, as indicated by the dashed line.

Figure 6 (a) is a diagram showing a transfer device of a fifth modified example. The transfer device 1 of this modified example differs from the transfer device 1 shown in Figure 3 in the shape of the partition member 3. As shown in Figure 6 (a), the partition member 3 has a pair of vertically erected wall portions 32 and a bottom portion 33 that connects the lower end portions of the pair of wall portions 32 in the horizontal direction, and has a U-shaped cross section with an open upper portion. Here, as in the embodiment shown in Figure 3 and the modified examples shown in Figures 4 and 5, if the inner circumferential surface of the partition member 3 is arc-shaped, 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 in the partition member 3 (see Figure 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 vertically. According to this modified example, the wall portion 32 is positioned vertically to the side of the flow path forming member 5, so that when one of the partition member 3 and the flow path forming member 5 is moved vertically, as shown by the double arrow in the figure, the partition member 3 and the flow path forming member 5 are less likely to interfere with each other. 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. It also makes it easier to manufacture the partition member 3.

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 inlet 3a of the partition member 3, but as shown by the dashed 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 shown by the dashed line, the partition member 3 may be formed by curving the upper end portion 321 of the wall portion 32 so that it spreads outward in the width direction, or an arc-shaped corner portion 34 may be provided at the connection portion between the wall portion 32 and the bottom portion 33.

Figure 6 (b) is a diagram showing a transfer device of a sixth modified example. In this modified transfer device 1, 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 Figure 6 (a). Note that, as shown by the dashed line, the bottom 33 of the partition member 3 may be formed in a circular arc shape that is convex downward.

Figure 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 Figure 3. As shown in Figure 7(a), the partition member 3 of this modified example has a second curved portion 35 at the upper end portion that is curved so as to expand outward in the width direction. This widens the inlet 3a of the partition member 3, allowing scum Sc floating over 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 positioned 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.

Figure 7 (b) is a diagram showing a transfer device of the eighth modified example. In 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 Figure 7 (a). In addition, in this modified example, the part where the radial distance 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 used, and the radial distance 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 distance Di.

Figure 8 shows a transfer device of the ninth modified example. In this modified example, the depth Dp1 from the water surface WL and the opening length L3 at the inlet 3a, and the depth Dp3 from the water surface WL and the opening length L2 at 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 discharge port 7a are kept constant.

As shown in FIG. 8(a) surrounded by a dashed double-dashed line rectangle, the partition member 3 has a pair of partition member components 30 in the shape of a half arc, and as shown in FIG. 8(a) and FIG. 8(b), the partition member 3 is formed by partially overlapping the pair of partition member components 30. In FIG. 8(a) and FIG. 8(b), the overlapping portion of the pair of partition member components 30 is indicated by the symbol β. The pair of partition member components 30 rotate around the radial center O as the rotation center, and the size of the overlapping portion β can be changed.

When the overlapping portion β is reduced from the state of the partition member 3 shown in FIG. 8(a) to that 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 components 30, the depth Dp1 and opening length L3 of the inlet 3a from the water surface WL can be adjusted. Note that in FIG. 8, an example is given of a mode 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 a mode 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.

8(a) and 8(b), the flow path forming member 5 comprises a flow path forming member main body 50 with an arc-shaped cross section with approximately 1/3 of the lower part of the cylinder cut out, 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 is 1/5 arc-shaped, with the lower end portion protruding downward from the flow path forming member main body 50, and the suction port 5a is formed between these lower end portions. 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.

Specifically, when each of the pair of slide pieces 53 is slid inward (upward) of the flow path forming member body 50 from the state 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 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.

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, and the configuration of the flow path forming member 5 may be applied to the partition member 3. In addition, by dividing the pair of partition member constituents 30 or the slide pieces 53 into multiple 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.

9 is a diagram showing a transfer device of the tenth modified example. In this modified example, the transfer device 1 is supported by the partition member 3 in a so-called cantilevered state, in which 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. As shown in the two-dot chain line rectangle, 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 partly shared with 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 composed 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 inlet 3a of the partition member 3 toward the suction port 5a becomes a smooth flow along the inner circumferential surface 4a, and the scum Sc can be smoothly sucked in 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 end on the right side in the figure). However, 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 in the width direction of the partition member 3 are made the same, it is preferable because this makes it easier for scum Sc to flow into the inlet 3a from both sides in the width direction.

Figure 10 shows a transfer device of the eleventh modified example. In this modified example, the partition member 3 is omitted, and the flow path forming member 5 is arranged 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 Figure 10, a flow of water is generated in the direction in which the water is sucked into the flow path S from the suction port 5a. As a result, as the flow of scum Sc is conceptually shown in Figure 10, 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 due to the flow of water discharged from the discharge port 7a.

As shown by the arc-shaped double arrow, the flow path forming member 5 may be rotated around the radial center O as the rotation center, and the direction in which the suction port 5a opens may be changed within the range of angle α as shown by the straight arrow. 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, etc., the partition member 3 may be rotated around the radial center as the rotation center.

Next, a second embodiment of the transfer device of the present invention, which differs in the equipment to be installed, will be described. In the second embodiment described below, components with the same names as those in the embodiment shown in Figures 1 to 3 will be described using the same reference numerals as used above, and duplicate descriptions may be omitted.

Figure 11 is a schematic diagram of an inverted crossing structure equipped with a transfer device according to a second embodiment of the present invention. In an inverted crossing structure, when a sewer pipe crosses a river, a railway, or the like, an inverted crossing pipe is installed 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.

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 white 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 pipeline 81, an upstream manhole 82, an overpass pipe 83, a downstream manhole 84, and a downstream pipeline 85 in the order of description from the upstream side to the downstream side of the flow of the sewage DR. The upstream pipeline 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 pipeline 85 is connected to the downstream manhole 84 at a position lower than the position where the upstream pipeline 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.

The sewage DR that has flowed through the upstream pipeline 81 flows through the upstream manhole 82, the overflow pipe 83, and further through the downstream manhole 84 and 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.

Here, the upstream pipeline 81 is provided with a transfer device 1 having the same configuration as the transfer device 1 shown in Figures 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 pipeline 81 connects to the upstream manhole 82. As with the transfer device 1 shown in Figures 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, then transported toward the upstream manhole 82, and blown out from the downstream end 52 of the flow path forming member 5, where it is collected on the water surface WL of the sewage DR inside the upstream manhole 82.

The scum Sc that has collected on the water surface WL of the sewage DR inside the upstream manhole 82 is removed by opening the iron cover of the upstream manhole 82, and some of it is drawn into the flow of the sewage DR and flows into the overflow pipe 83. Sand and other materials that have settled in the soil and sand pit 821 also flow into the overflow pipe 83 with 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 the settling sediment, such as sand.

Figure 12 is a cross-sectional view of the hidden overpass pipe shown in Figure 11 taken along line C-C. Note that in Figure 12, the two side regions in the width direction and the middle region in the up-down direction of the hidden overpass pipe 83 are omitted.

As shown in FIG. 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 will be easily 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.

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 the direction of being sucked into the flow path S from the suction port 5a, a water flow occurs 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 on the water surface WL (near the ceiling surface 831) in the direction of gathering at the inlet 3a of the partition member 3, and 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 of scum Sc adhering to the ceiling surface 831 of the overpass pipe 83 and remaining in the overpass pipe 83.

At the bottom side of the overhanging pipe 83, a sediment transfer device 2 for transferring sediment is provided on the bottom surface 832. 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 parts repaired with concrete, shown by cross-hatching. The sediment transfer device 2 includes a trough 21, a bottom-side flow path 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 part 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-side flow path forming member 25 extends in the same direction as the trough 21, and its total length is formed to be approximately the same length as the trough 21. The bottom side flow path forming member 25 forms the bottom side flow path S2 and separates the bottom side flow path S2 from the groove M. The bottom side flow path forming member 25 also has a groove suction port 25a that is connected to the bottom side flow path S2 and is located in 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 path S2.

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 through the opening 21a of the trough 21. In addition, sand and the like that has accumulated in the soil and sand pit 821 of the upstream manhole 82, as 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 that has accumulated at the bottom of the groove M is drawn into the flow of the discharged water and is sucked into the bottom flow path S2 from the groove suction port 25a, as shown by the curved arrow in Figure 12. Furthermore, in the bottom flow path S2 of the bottom flow path forming member 25, the sucked sediment moves toward the downstream side of the discharge direction (the downstream manhole 84 side) due to the flow of the water discharged from the bottom 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 overpass 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.

Note that even if a component is included only in the description of each of the embodiments and variations described above, that component may be applied to other embodiments or other variations.

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.

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.

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 extending 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.

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 approximately 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.

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

In this way, the objects to be transferred that are floating over a wider area on the water surface can be transported by flowing them into the surrounding area from the inlet without increasing the number of transport devices.

The transfer device described above is a transfer device that forms a flow path, has a suction port that is connected to the flow path and is submerged in water, and is equipped with a pipe-shaped flow path forming member that extends approximately parallel to the water surface, and a discharge port that discharges a fluid into the flow path 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.

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 vertically and 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 that is a perfect circle or one that is flat, 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.

According to this transfer device, when 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, within the flow path, the object to be transferred that has been sucked in moves toward the downstream side in the discharge direction due to the water flow generated by the fluid. As 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.

Furthermore, due to the flow on the water surface in the direction of being sucked into the suction port, an area on the water surface from which the transferred material has been removed may be generated in a state extending in the transfer direction. Hereinafter, the area on the water surface from which the transferred material has been removed may be referred to as the removal area 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 material) to flow in the transfer direction through the removal area on the water surface. In addition, when the scum flowing through the removal area on the water surface comes into contact with scum floating in a consolidated state on the water surface, part of it breaks down, and the broken part is sucked in from 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 floating in a consolidated state on the water surface can be efficiently transferred while breaking down little by little.

As a result, the number of outlets and the number of pipes that supply fluid to the outlets can be reduced, allowing a simple structure to be adopted. Furthermore, the amount of fluid discharged from the outlets can be reduced. As mentioned above, it is sufficient to create a water flow in the flow path once, so in some cases a weak pressure of 0.1 MPa or less may be sufficient for the fluid to be discharged from the outlets.

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 area 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.

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. In addition, when the height of the water surface changes, the partition member may be one that can move vertically and change the height of the suction port. Furthermore, the peripheral area may be one in which the part on the inlet side becomes narrower as it approaches the inlet. In addition, the partition member may have a curved part at the upper end part 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 part is located at approximately the same height as the inlet, one located below the inlet, or one located above the inlet. In addition, the partition member may be a shape in which the upper end part 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 with a continuous curved surface from the partition member to the flow path forming member. 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.

By adopting an embodiment that includes the partition member, the peripheral area is separated from other areas underwater by the partition member, which promotes the inflow of the object to be transferred from the inlet into the peripheral area, and the object to be transferred floating on the water surface can be efficiently introduced 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 through the peripheral area and is smoothly sucked in through the suction port.

In addition, when the transfer device is installed in, for example, a water conduit that flows the received water 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 that has accumulated on the water surface, part of it breaks down, and the broken part flows from the inlet into the surrounding area, after which it 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 that has accumulated on the water surface can be efficiently transferred while breaking it down little by little.

In addition, in this transfer device, the flow path forming member may have a flat shape in which the dimension in the width direction perpendicular to the discharge direction of the fluid in a horizontal plane is longer than the dimension in the height direction.

In this way, by adopting a flow path forming member with 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 flat, 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 flat, it becomes less likely to impede the flow of sewage, etc. in a water conduit in which the transport device is installed, and it is also possible to reduce resistance to the flow of sewage, etc.

In addition, in this transfer device, the partition member may have a flat shape in which the dimension in the width direction perpendicular to the discharge direction of the fluid in a horizontal plane is longer than the dimension in the height direction.

In this way, by adopting a partition member with 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 transferred objects floating over a wider area of the water surface can be made to flow into the peripheral area. In addition, by making the partition member flat, the entire device can be made thinner, and it can be suitably used in shallow waterways, etc. Furthermore, by making the partition member flat, it becomes less likely to impede the flow of sewage, etc. in the water conduit in which the transfer device is installed, and it is also possible to reduce resistance to the flow of sewage, etc.

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 object to be transferred, 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.

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 for sucking the object to be transferred, 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 passage forming member is narrowed toward the suction port.

REFERENCE SIGNS LIST 1 Transfer device 3 Partition member 3a Inlet 5 Flow path forming member 5a Suction port 51 Upper end portion 7 Discharge member 7a Discharge port 9 Water conduit S Flow path Sc Scum R1 Surrounding area W Wastewater

Claims (1)

A flow path forming member that forms a flow path and has an inlet port that is connected to the flow path and is 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 for sucking the object to be transferred, 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 passage 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,
A transfer device, characterized in that the discharge port discharges the fluid along the inclined posture of the flow path forming member.