Ditch foreign body catcher

Abstract

To provide a foreign material collector for a groove, that does not easily deteriorate performance of separating a foreign material from a fluid.SOLUTION: A foreign matter collector 1 for the groove installed in a groove G to separate and remove the foreign matter from the fluid comprises: a rear wall part 3 arranged on a downstream side; and a bottomed cylindrical box-shaped part 10 having a substantially cylindrical wall part 4 connected to the rear wall part 3, wherein the rear wall part 3 is formed as a first screen part for separating solids in the fluid, and a second screen part 2 is provided so that foreign matter of a separable size can pass through is arranged on an upstream side of the first screen part 3. Since the foreign matter with a large outer shape is separated by the second screen part 2 and the foreign matter with a small outer shape is separated by the first screen part 3, clogging of the first screen part 3 is suppressed, and performance of separating the foreign material is unlikely to deteriorate.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a foreign matter collector for gutters, which separates and removes foreign matter such as garbage from rainwater flowing in gutters such as U-shaped gutters. [Background technology]

[0002] Rainwater flowing through U-shaped gutters often contains foreign matter such as dead leaves and trash. For example, in gutters installed near sports fields with artificial turf, the rainwater flowing into them may contain fragments of the pile threads of the artificial turf that resemble grass blades, as well as particles of sand or synthetic resin that are filled between the pile threads.

[0003] A method of installing a screen member such as a mesh in a gutter to remove foreign matter such as dust contained in rainwater has been conventionally used, and various inventions relating to such screen members have been disclosed.

[0004] For example, Patent Document 1 describes a configuration in which a trash basket with a mesh 7 is installed in a U-shaped gutter. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Utility Model Application Publication No. 63-108482 Summary of the Invention [Problem to be solved by the invention]

[0006] The trash basket shown in Patent Document 1 is installed in a U-shaped gutter 1 with its opening, an inlet 2, facing upstream of the wastewater 3, so that trash 4 contained in the wastewater 3 is separated and left in the basket. However, if foreign matter such as trash blocks the mesh of the net, the ability to separate foreign matter can rapidly decrease.

[0007] The present invention provides a foreign matter collector for grooves that is less likely to lose its ability to separate foreign matter from a fluid. [Means for solving the problem]

[0008] In order to achieve the above object, the present invention has the following configuration.

[0009] That is, the foreign matter collector for grooves according to the present invention is a foreign matter collector for grooves that is installed in a groove to separate and remove foreign matter from water flowing in the groove, and has a rear wall portion that is arranged on the downstream side of the water, and a bottomed cylindrical box-shaped portion that has a cylindrical wall portion connected to the rear wall portion, and at least the rear wall portion of the box-shaped portion is formed as a first screen portion that separates solids in the water, and the box-shaped portion is formed with a second screen portion that is arranged on the upstream side and spaced apart from the first screen portion, and the second screen portion is formed to allow foreign matter of a size that can be separated from the water by the first screen portion to pass through, A third screen section is formed between the first screen section and the second screen section, and the third screen section is formed to allow foreign matter of a size that the first screen section can separate from the water to pass through, and to separate foreign matter of a size that can pass through the second screen section from the water, and the cylindrical wall section of the box-shaped section has an upper wall section that closes the top, and the upper wall section is located directly above the third screen section, and the upper wall section has an inclined section that slopes upward as it reaches the upstream side of the water, and the inclined section is formed to protrude outward and upward from the box-shaped section. do.

[0010] The foreign matter collector for grooves according to the present invention comprises a rear wall portion positioned downstream of the fluid, and a bottomed cylindrical box-shaped portion having an approximately cylindrical wall portion connected to the rear wall portion, and the rear wall portion is formed as a first screen portion that separates solids in the fluid, so that it can be installed in a groove and used to separate and remove foreign matter from flowing fluids such as rainwater.

[0011] Furthermore, a second screen section is formed upstream of the first screen section at a distance, and the second screen section is configured to allow foreign matter of a size that can be separated from the fluid by the first screen section to pass through, so that foreign matter with a large outer shape is separated by the second screen section and smaller foreign matter is separated by the first screen section. This prevents clogging of the first screen section by large foreign matter, and the performance of the groove foreign matter collector for separating foreign matter is less likely to deteriorate.

[0012] Furthermore, if a third screen section is formed between the first screen section and the second screen section, and this third screen section is formed to allow foreign matter of a size that can be separated from the fluid by the first screen section to pass through, and to allow foreign matter of a size that can pass through the second screen section to be separated from the liquid, each screen section will be able to separate foreign matter of a different size, which is preferable because it prevents the first screen section and third screen section from becoming clogged with larger foreign matter.

[0013] Furthermore, if the third screen section is provided with an inclined section that slopes upward as it moves from the upstream side to the downstream side of the fluid, and a circulation section is formed in the upper wall section that forms the upper surface of the cylindrical wall section so that the resistance to the fluid passing through is lower than in other parts of the upper wall section, and this circulation section is positioned directly above the inclined section, when the flow rate of the fluid flowing in the groove increases, the flow of the fluid that reaches the third screen section will be directed upward by the inclined section and will flow from the circulation section to the outside of the box-shaped section, which is preferable because it reduces the load that the first screen section receives from the fluid. [Effects of the Invention]

[0014] According to the foreign matter collector for groove of the present invention, the performance of separating foreign matter from a fluid is unlikely to be reduced. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a front view showing an embodiment of a foreign matter collector for a groove according to the present invention; [Figure 2]FIG. 2 is a left side view of FIG. [Figure 3] FIG. 2 is a rear view of FIG. [Figure 4] FIG. 2 is a plan view of FIG. [Figure 5] 3 is a left side view showing a state in which the upper wall portion and the inner wall portion of FIG. 2 are rotated. FIG. [Figure 6] 2 is a front view showing an example of a closing member attached to the groove foreign matter collector of FIG. 1. FIG. [Figure 7] 7 is a front view showing a state in which the closing member of FIG. 6 is attached to the foreign matter collector for grooves of FIG. 1. [Figure 8] 8 is a front view showing the state in which the groove foreign matter collector of FIG. 7 is installed in a groove. [Figure 9] FIG. 9 is a diagram showing an outline of a side surface of FIG. 8. [Figure 10] FIG. 10 is a front view showing another embodiment of a foreign matter collector for a groove according to the present invention. [Figure 11] FIG. 11 is a left side view of FIG. [Figure 12] FIG. 11 is a rear view of FIG. [Figure 13] FIG. 11 is a plan view of FIG. [Figure 14] 12 is a view showing a state in which an upper wall portion is removed from the groove foreign matter collector of FIG. 11. FIG. [Figure 15] 12 is a cross-sectional view taken along the line AA in FIG. 11. [Figure 16] 12 is a cross-sectional view of FIG. 11 taken along line B-B. [Figure 17] 11 is a front view showing a state in which a blocking member is attached to the groove foreign matter collector of FIG. 10. FIG. [Figure 18] FIG. 18 is a front view showing the groove foreign matter collector of FIG. 17 installed in a groove. [Figure 19] FIG. 19 is a diagram showing an outline of a side view of FIG. 18. DETAILED DESCRIPTION OF THE INVENTION

[0016] The embodiments of the present invention will be specifically described with reference to the drawings.

[0017] In the drawings, reference numeral 1 denotes a groove foreign matter collector. In the following description of Figures 1 to 4, the left-right direction in Figure 1, which is a front view, is defined as the width direction, the up-down direction in the figure perpendicular to the width direction is defined as the length direction, and the direction perpendicular to the width direction and length direction is defined as the front-rear direction.

[0018] 1 to 4 is formed in the shape of a hollow, generally rectangular box. This groove foreign matter collector 1 has a rear wall 3 that forms the rear surface, and a box-shaped portion 10 that includes a generally rectangular cylindrical wall portion 4 that connects to the end of the rear wall 3 and extends forward, and a front wall 2 that forms the front surface of the groove foreign matter collector 1 is disposed at the opening of the box-shaped portion 10 that opens forward. The rear wall 3, box-shaped portion 10, and front wall 2 are each formed from a metal plate, specifically a stainless steel plate.

[0019] The cylindrical wall portion 4 is formed by bending a single flat plate member into a substantially U-shape to form a bottom wall portion 42 that forms the lower surface of the groove foreign matter collector 1 and side wall portions 43 that form the side surfaces on both sides in the width direction. The cylindrical wall portion 4 is formed into a substantially rectangular cylindrical shape by arranging and attaching an upper wall portion 41 in the form of a rectangular plate so as to close the upper opening of this substantially U-shape.

[0020] 4, the upper wall portion 41 is smaller in size in the front-to-rear direction than the bottom wall portion 42 and each side wall portion 43, and its rear end is attached via a hinge H1 near the rear wall portion 3. That is, a rectangular opening S that connects the inside and outside of the box-shaped portion 10 is provided in front of the upper wall portion 41.

[0021] The upper wall portion 41 has a sloped portion 41a at its front end portion that slopes downward as it approaches the front, and the sloped portion 41a is disposed so as to extend into the inside of the box-shaped portion 10.

[0022] Furthermore, openings 41b are formed in the upper wall portion 41, penetrating vertically. The openings 41b are circular through-holes with a diameter of 1.5 mm, and a large number of them are provided over substantially the entire surface of the upper wall portion 41. Note that in Fig. 4, only a portion of the openings 41b is shown for simplification.

[0023] 1, openings 21 are formed in the front wall 2, penetrating the front and rear directions. The openings 21 are formed in a square shape with sides measuring 25 mm, and a large number of openings 21 are arranged over substantially the entire surface of the front wall 2.

[0024] As shown in Fig. 3, openings 31 are formed in the rear wall 3, penetrating in the front-to-rear direction. The openings 31 are circular through-holes with a diameter of 1.5 mm, and a large number of them are provided over substantially the entire surface of the rear wall 3. Note that Fig. 3 shows only a portion of the openings 31 for simplification.

[0025] As shown in Fig. 2, through-hole-shaped openings 43a are formed in each side wall portion 43. The openings 43a are circular through-holes with a diameter of 1.5 mm, and a large number of them are provided so as to cover substantially the entire surfaces of each side wall portion 43 and the bottom wall portion 42. Note that Fig. 2 simplifies the drawing by showing only a portion of the openings 43a.

[0026] A plate-like inner wall 5 is provided inside the box-shaped portion 10. The inner wall 5 includes an inclined portion 51 that slopes upward toward the rear, and an extended portion 52 that extends rearward from the upper end of the inclined portion 51, and the lower end of the inclined portion 51 is attached to the vicinity of the front end of the bottom wall 42 via a hinge H2. In other words, the inner wall 5 is provided so as to rise obliquely rearward from the upper surface of the bottom wall 42.

[0027] The inclined portion 51 and the extended portion 52 of the inner wall portion 5 are provided with a through-hole-like opening 53 at approximately the same height as the plate surface. all A large number of openings 53 are provided across the entire surface, and each opening 53 is formed as a circular through-hole with a diameter of 2 mm. That is, the size of each opening 53 in the inner wall 5 is larger than the opening 31 in the rear wall 3 and smaller than the opening 21 in the front wall 2. Furthermore, the size of each opening 53 in the inner wall 5 is larger than the opening 41b in the upper wall 41 and the openings 43a in each side wall 43.

[0028] 4, only a part of the opening 53 is shown to simplify the drawing, and the inner wall 5 is not shown in FIG.

[0029] The foreign matter collector 1 for a ditch shown in FIGS. 1 to 4 is installed in a ditch through which a fluid such as rainwater flows, and is provided to remove foreign matter such as dust contained in the fluid.

[0030] Specifically, the front wall 2 and the rear wall 3 are disposed in the grooves facing the upstream and downstream sides of the flow of the fluid W, respectively, so that, as shown in Fig. 2, the fluid W flowing from the upstream side enters the inside of the box-shaped portion 10 through the opening 21 in the front wall 2, passes through the opening 53 in the inner wall 5, passes through the opening 31 in the rear wall 3 and the openings 41b and 43a in the cylindrical wall 4, and then flows out to the outside of the box-shaped portion 10. In this case, the rear wall 3 having the opening 31 formed therein and the front wall 2 having the opening 21 formed therein function as screens that separate foreign matter from the fluid W. That is, the rear wall 3 functions as a first screen that separates foreign matter larger than the opening size of the opening 31 from the fluid W, and the front wall 2 functions as a second screen that separates foreign matter larger than the opening size of the opening 21 from the fluid W. Further, behind the inner wall portion 5, the cylindrical wall portion 4 having the openings 41b and 43a also functions as a first screen portion similar to the rear wall portion 3.

[0031] As a result, the groove foreign matter collector 1 separates foreign matter that is smaller than the opening 21 and larger than the opening 31 and each of the openings 41b and 43a from the fluid W and leaves it inside the box-shaped portion 10.

[0032] The inner wall 5 having the openings 53 formed therein functions as a third screen that separates foreign matter from the fluid W, similar to the first and second screens. Specifically, the inner wall 5 separates foreign matter larger than the openings 53 from the fluid W and causes it to remain on the front side of the inner wall 5. By providing the inner wall 5 to separate foreign matter in this manner, clogging of the rear wall 3 and the openings in the cylindrical wall 4 by such foreign matter is suppressed, and the performance of the first screen in separating foreign matter is maintained.

[0033] The inner wall 5 has a height dimension lower than that of the cylindrical wall 4, and the extension 52 located at its upper end is positioned approximately midway between the top wall 41 and the bottom wall 42. By providing the inner wall 5 in this manner, when the flow rate of the fluid W passing through the installed groove foreign matter collector 1 increases and reaches above the upper end of the inner wall 5, a portion W1 of the fluid W flows over the upper portion of the inner wall 5 and to the rear thereof. This reduces the resistance of the fluid W that the inner wall 5 experiences when the fluid comes into contact with the fluid. Furthermore, even when the liquid level of the fluid W is below the upper end of the inner wall 5, if the flow velocity of the fluid W is high, a portion of the fluid W flows upward along the inclined portion 51 of the inner wall 5, over the upper portion of the inner wall 5, and to the rear thereof, thereby reducing the resistance of the fluid that the inner wall 5 experiences.

[0034] In the groove foreign matter collector 1, the upper wall portion 41 can be rotated around the hinge H1 as an axis. Also, the inner wall portion 5 can be rotated around the hinge H2 as an axis. Figure 5 is a left side view showing the rotated state of the upper wall portion 41 and the inner wall portion 5 in Figure 2. By moving the upper wall portion 41 and the inner wall portion 5 in this way, the work of removing foreign matter remaining inside the cylindrical wall portion 4 that has been separated from the fluid can be easily performed.

[0035] Fig. 6 is a front view showing an example of a blocking member C to be attached to the groove foreign matter collector 1 of Fig. 1, and Fig. 7 is a front view showing the blocking member C of Fig. 6 attached to the groove foreign matter collector 1 of Fig. 1. The blocking member C shown in Fig. 6 is a flat plate-like member having a roughly J-shaped outer shape, and has a pair of horizontally oval through holes c1 spaced apart in the vertical direction.

[0036] The blocking member C is attached to the front wall portion 2 by threading the male threaded portion of the screw B1 inserted into each of the through holes c1 into the female threaded hole F provided in the front wall portion 2.

[0037] 7, the blocking member C attached to the groove foreign matter collector 1 is positioned so that its outer edge protrudes outward in the width direction beyond the outer surfaces of the side walls 43. When the groove foreign matter collector 1 is installed in a groove, the blocking member C obstructs the flow of fluid through the gap between the inner surface of the groove and the outer surfaces of the side walls 43, thereby encouraging the fluid to flow into the groove foreign matter collector 1.

[0038] FIG. 8 is a front view showing the state in which the groove foreign matter collector 1 of FIG. 7 is installed in a groove G, and FIG. 9 is a diagram showing an outline of the side surface of FIG.

[0039] In Figure 9, the groove G is provided so that fluid flows from right to left in the figure. The groove G shown in Figures 8 and 9 is a so-called U-shaped groove formed from a long concrete body with a roughly U-shaped cross section. A step g2 is formed at the top of the groove G so as to be recessed outward in the width direction, and a lid L is placed on the top surface of this step g2 to close the opening at the top of the groove G.

[0040] The groove foreign matter collector 1 shown in Figures 8 and 9 is placed on the upper surface of the bottom surface g1 of the groove G. As shown in Figure 8, when the groove foreign matter collector 1 is placed in the groove G, the outer edge of the closing member C attached to the front wall 2 and protruding outward in the width direction is positioned near the inner surface of the groove G. The presence of the closing member C makes it difficult for the fluid flowing inside the groove G to flow along the outer lateral sides of the side wall 43, and more of the fluid flows into the inside of the box-shaped portion 10 through the opening 21 of the front wall 2.

[0041] Furthermore, the groove foreign matter collector 1 can be easily installed in and removed from the groove G by providing a handle T that protrudes upward from the upper wall portion 41 and that is attached to the front wall portion 2.

[0042] The groove foreign matter collector 1 shown in Figures 8 and 9 is restricted from movement within the groove G by an attachment member 8 attached to the rear wall 3. The attachment member 8 includes a groove engagement portion 85 disposed above and a collector connection portion 81 disposed below, with these two separate components connected by a thumbscrew B2. The collector connection portion 81 is attached to the groove foreign matter collector 1 with its lower portion abutting against the rear wall 3. The groove engagement portion 85 is formed in a roughly T-shape, and its upper portion is engaged with and attached to the groove G so as to span over each of the step portions g2 of the groove G spaced apart in the width direction. The groove engagement portion 85 is also positioned between the covers L attached to the groove G, so that movement of the groove G in the longitudinal direction is restricted.

[0043] By providing the mounting member 8 as described above, the movement of the groove foreign matter collector 1 installed in the groove G within the groove G is restricted, thereby preventing the groove foreign matter collector 1 from being swept away by the fluid flowing within the groove G.

[0044] Furthermore, by unscrewing the screw B2 and separating the collector connection part 81 from the groove engagement part 85, the installed groove foreign matter collector 1 can be easily removed from the groove G.

[0045] 8 and 9 is formed so that, when housed in groove G, a gap is formed between the upper surface formed by the upper wall portion 41 and the top of groove G. Specifically, the upper wall portion 41 is disposed approximately midway between the bottom surface g1 and the step portion g2 of groove G. By providing groove foreign matter collector 1 in this manner, when the flow rate of a fluid such as rainwater flowing through groove G increases and the water level rises, the fluid flows over the upper wall portion 41 and above groove foreign matter collector 1, making it less likely that groove foreign matter collector 1 will block the flow and cause the fluid to overflow from groove G.

[0046] Furthermore, the groove foreign matter collector 1 is configured so that when the flow rate or flow velocity of the fluid flowing in the groove G increases, a portion of the fluid flows upward along the inclined portion 51 of the inner wall 5, passes over the upper portion of the inner wall 5, and flows rearward. Furthermore, when the flow rate or flow velocity of the fluid increases further, a portion of the fluid flowing upward in front of the inclined portion 51 passes through the opening S and flows above the upper wall 41. By allowing the fluid to pass through the opening S in this way, the resistance that the groove foreign matter collector 1 receives from the fluid can be reduced. Furthermore, by providing the inclined portion 41a at the front end of the upper wall 41, the flow of the fluid passing through the opening S and reaching above the upper wall 41 can be promoted.

[0047] The gutter foreign matter collector 1 is installed in a gutter such as a street gutter through which rainwater and other water flows to collect foreign matter such as garbage. For example, it can be installed in a street gutter near where artificial turf is laid, and is therefore suitable for use.

[0048] Most common artificial turf is constructed with pile yarns simulating grass blades planted on a sheet-like base fabric. When artificial turf is laid outdoors, such as for use in stadiums for sports like tennis and soccer, a structure is often used in which granules, such as elastic granules made of synthetic resin or rubber or hard granules such as silica sand, are filled to a certain thickness between the pile yarns. When rain falls on an area where such artificial turf is laid, pieces of the pile yarns break off and the granules are carried away by the rainwater. These pile yarn fragments and granules carried away by the rainwater could potentially become a source of so-called microplastics after being discharged into the external environment.

[0049] Therefore, by installing the gutter foreign matter collector 1 in a gutter located near the location where artificial turf is laid, foreign matter with relatively large external dimensions such as dead leaves can be separated from fluids such as rainwater at the front wall portion 2, and the elastic particles made of synthetic resin or rubber and pile yarn fragments can be separated from the fluid at the inner wall portion 5, rear wall portion 3 and tubular wall portion 4 after passing through the opening 21 in the front wall portion, and can remain inside the box-shaped portion 10.

[0050] FIG. 10 is a front view showing another embodiment of the groove foreign matter collector 1 according to the present invention, FIG. 11 is a left side view of FIG. 10, FIG. 12 is a rear view of FIG. 10, and FIG. 13 is a plan view of FIG. 10.

[0051] The groove foreign matter collector 1 shown in Figures 10 to 13, like the groove foreign matter collector 1 shown in Figures 1 to 4, is formed in the shape of a hollow, approximately rectangular box, and is provided with a rear wall portion 3 that forms the rear surface, a box-shaped portion 10 that has a approximately rectangular cylindrical tubular wall portion 4 that is connected to the end of the rear wall portion 3 and extends forward, and a front wall portion 2 that forms the front surface and is disposed at the opening portion of the box-shaped portion 10 that opens forward.

[0052] The front wall portion 2 is formed in a generally C-shaped flat plate shape with a large opening 22 on the inside, and is provided so that fluid flowing from the upstream side enters the inside of the box-shaped portion 10 through this opening 22.

[0053] In FIG. 10, inner wall portions 6 and 7, which will be described later, are omitted to simplify the drawing.

[0054] The cylindrical wall portion 4 is formed by bending a single flat plate member into a substantially U-shape to form a bottom wall portion 42 that forms the lower surface of the groove foreign matter collector 1 and side wall portions 43 that form the side surfaces on both sides in the width direction. The cylindrical wall portion 4 is formed into a substantially rectangular cylindrical shape by arranging and attaching an upper wall portion 41 in the form of a rectangular plate so as to close the upper opening of this substantially U-shape.

[0055] 1 to 4, the rear wall 3 has a large number of circular openings 31 formed over substantially the entire surface, and each opening 31 is formed as a circular through-hole with a diameter of 1 mm. The rear wall 3 functions as a first screen that separates foreign matter larger than the openings 31 from the fluid.

[0056] 1 to 4, the bottom wall 42 and each side wall 43 of the cylindrical wall 4 are formed by bending a single flat plate member into a substantially U-shape, and a large number of circular openings 43a are provided over substantially the entire surfaces of each side wall 43 and the bottom wall 42. The openings 43a are formed as circular through-holes with a diameter of 1 mm, which is the same shape as the opening 31 provided in the rear wall 3.

[0057] The upper wall 41 is formed in the shape of a roughly rectangular plate provided separately from the bottom wall 42 and each side wall 43, and its front-to-rear dimension is smaller than those of the bottom wall 42 and each side wall 43. The upper end of each side wall 43 is formed with an edge 43b that bends in the width direction and protrudes inward, and the upper wall 41 is attached by threading the male thread portion of screw B3, which penetrates from above, into edge 43b. In other words, the upper wall 41 can be removed from the groove foreign matter collector 1 by unscrewing the screw B3 from edge 43b.

[0058] FIG. 14 is a view showing the state in which the upper wall portion 41 is removed from the groove foreign matter collector 1 of FIG.

[0059] As shown in FIG. 14, by removing the upper wall portion 41, foreign matter remaining inside the box-shaped portion 10 can be easily removed.

[0060] As shown in Figures 11 and 13, the upper wall portion 41 is positioned so that its rear end is located near the rear wall portion 3, and a rectangular opening S is formed in front of the upper wall portion 41, connecting the inside and outside of the box-shaped portion 10.

[0061] The upper wall portion 41 has a sloped portion 41a at its front end portion that slopes upward as it approaches the front, and the sloped portion 41a is disposed so as to protrude outward and upward from the box-shaped portion 10.

[0062] Furthermore, openings 41b are formed in the upper wall portion 41, penetrating the upper wall portion 41 in the vertical direction. The openings 41b have the same size and shape as the openings 43a, and a large number of them are provided so as to cover almost the entire surface of the upper wall portion 41. Note that in Fig. 13, only a portion of the openings 41b is shown for simplification.

[0063] A plate-like inner wall portion 6 is disposed inside the box-shaped portion 10. The inner wall portion 6 is disposed rearward of the front wall portion 2 with a gap therebetween, and is located below the inclined portion 41a of the upper wall portion 41.

[0064] FIG. 15 is a cross-sectional view taken along the line AA in FIG.

[0065] The inner wall portion 6 has an outer shape corresponding to the inner shape of the cylindrical wall portion 4, and stands vertically upward in the vertical direction from the bottom wall portion 42. Specifically, the lower and widthwise ends of the inner wall portion 6 abut against the inner surfaces of the bottom wall portion 42 and each side wall portion 43, and the upper end thereof is located near the upper ends of each side wall portion 43.

[0066] 15, eight rectangular openings 61 penetrating in the front-to-rear direction are formed in the inner wall 6. The openings 61, each measuring a maximum of 40 mm in length and 40 mm in width, are arranged over substantially the entire surface of the inner wall 6, and function as a second screen that separates foreign matter larger than the openings 61 from the fluid.

[0067] A plate-like inner wall portion 7 is disposed inside the box-shaped portion 10. The inner wall portion 7 is disposed rearward of the inner wall portion 6 with a gap therebetween, and stands vertically upward from the bottom wall portion 42 in the vertical direction.

[0068] FIG. 16 is a cross-sectional view taken along the line BB in FIG.

[0069] The inner wall portion 7 has an outer shape that corresponds to the inner shape of the cylindrical wall portion 4, and its lower and widthwise ends abut against the inner surfaces of the bottom wall portion 42 and each side wall portion 43. The vertical size of the inner wall portion 7 is smaller than that of the cylindrical wall portion 4, and specifically, is formed to be about two-thirds the vertical size of the cylindrical wall portion 4.

[0070] 16 , a large number of openings 71 penetrating in the front-to-rear direction are formed over substantially the entire surface of the inner wall 7. Each opening 71 is formed as a circular hole with a diameter of 7 mm, and the size of the opening portion is larger than the opening 31 in the rear wall 3 and smaller than the opening 61 in the inner wall 6. Furthermore, the size of each opening 71 in the inner wall 7 is larger than the opening 41b in the top wall 41 and the openings 43a in each side wall 43 and bottom wall 42.

[0071] The inner wall portion 7 having the openings 71 formed over substantially the entire surface functions as a third screen portion that separates foreign matter larger than the opening portion of each opening 71 from the fluid.

[0072] In addition, behind the inner wall portion 7, the cylindrical wall portion 4 provided with the openings 41b, 43a also functions as a first screen portion similar to the rear wall portion 3.

[0073] The groove foreign matter collector 1 shown in Figures 10 to 13, like the groove foreign matter collector 1 shown in Figures 1 to 4, is installed in a groove through which a fluid such as rainwater flows, and is configured so that the second screen section, third screen section, and first screen section, which are arranged at intervals from the upstream side to the downstream side, each separate foreign matter in the fluid.

[0074] The size of the openings formed is made smaller from the inner wall portion 6, which is the second screen portion located upstream, to the inner wall portion 7, which is the third screen portion, and to the rear wall portion 3, which is the first screen portion.This allows larger foreign matter to be separated in the screen portion located upstream, suppresses clogging of the openings in the screen portion located downstream, and maintains the ability to separate foreign matter from the fluid.

[0075] Foreign matter separated from the fluid by the inner wall 6, which serves as the second screen portion, remains on the bottom wall 42 on the front side of the inner wall 6 inside the box-shaped portion 10. Because the opening S is located above the front side of the inner wall 6 where the foreign matter remains, the remaining foreign matter can be easily removed from the opening S without removing the upper wall 41 from the groove foreign matter collector 1.

[0076] By providing the inclined portion 41a of the upper wall portion 41 of the box-shaped portion 10 so that it protrudes outward and upward, foreign matter can be separated at the openings 41b formed in the inclined portion 41a, even if the flow rate of the fluid flowing in the groove increases so much that the liquid level exceeds the upper surface of the cylindrical portion. The foreign matter separated at the inclined portion 41a remains on the lower bottom wall portion 42 after the liquid level drops, and can be removed from the openings S, etc.

[0077] The inner wall 7, which serves as the third screen, is formed so that its vertical size is smaller than that of the cylindrical wall 4, thereby providing a gap between the upper end of the inner wall 7 and the upper wall 41. By providing the inner wall 7 in this manner, when the flow rate of the fluid passing through the installed groove foreign matter collector 1 increases and reaches above the upper end of the inner wall 7, some of the fluid flows over the inner wall 7 and behind it. In other words, the increase in the contact area between the fluid and the inner wall 7 that accompanies an increase in the fluid flow rate is suppressed, and the resistance of the fluid that the inner wall 7 experiences is reduced.

[0078] Foreign matter separated from the fluid by the inner wall portion 7, which serves as the third screen portion, and the rear wall portion 3, which serves as the first screen portion, remains on the front bottom wall portion 42. Foreign matter remaining inside the cylindrical wall portion 4 in this manner can be easily removed from the inside of the cylindrical wall portion 4 by removing the upper wall portion 41 from the groove foreign matter collector 1, as shown in FIG.

[0079] As shown in Fig. 10, a female threaded hole F is provided in the front wall portion 2. Similar to the female threaded hole F in the front wall portion 2 shown in Fig. 1, this female thread F is for attaching a blocking member C having a through hole c1 formed at a corresponding position.

[0080] FIG. 17 is a front view showing a state in which the blocking member C is attached to the groove foreign matter collector 1 of FIG.

[0081] The blocking member C shown in FIG. 17 is similar to the blocking member C shown in FIG. 6, except that its outer shape and the arrangement of the through holes c1 are slightly different.

[0082] By attaching the blocking member C to the front wall portion 2, when the groove foreign matter collector 1 is installed in the groove G, the flow of fluid into the gap between the inner surface of the groove G and the outer surface of the side wall portion 43 is obstructed, and the fluid is encouraged to flow into the inside of the groove foreign matter collector 1 from the opening 21 in the front wall portion 2.

[0083] FIG. 18 is a front view showing the state in which the groove foreign matter collector 1 of FIG. 17 is installed in the groove G, and FIG. 19 is a diagram showing an outline of the side surface of FIG.

[0084] The groove G shown in Figures 18 and 19 is a U-shaped groove similar to the groove G shown in Figures 8 and 9, except that it does not have a step portion g2 at its upper part, and a lid L that covers the upper opening is placed on the upper end surface of the groove G.

[0085] The foreign matter collector 1 for grooves shown in FIGS. 18 and 19 is placed on the upper surface of the bottom surface g1 of the groove G, similar to the foreign matter collector 1 for grooves shown in FIGS.

[0086] 18, in the space inside the groove G through which the fluid flows, an inclined portion 41a extending from the upper wall portion 41 constituting the upper surface of the cylindrical wall portion 4 is arranged so as to block the space above the cylindrical wall portion 4. By providing the inclined portion 41a in this manner, even if the flow rate of the fluid increases so that the liquid level exceeds the upper surface portion of the cylindrical wall portion 4, the foreign matter can be separated from the fluid flowing above without entering the inside of the cylindrical wall portion 4.

[0087] 18 and 19 does not have a member directly attached to restrict movement within the groove G, but rather restricts movement by a restricting member 9 attached to the lid L and positioned at a distance to the rear. The restricting member 9 is a rod-shaped member whose upper end is connected to the lid L and protrudes downward, with its lower end positioned at a position corresponding to the rear wall 3.

[0088] By providing the regulating member 9 as described above, when the flow rate of the fluid flowing in the groove G increases and the groove foreign matter collector 1 moves downstream, the rear wall portion 3 abuts against it, restricting rearward movement beyond the position of the regulating member 9.

[0089] The foreign matter collector for groove 1 according to the present invention is not limited to the above embodiment, and various modifications are possible without departing from the gist of the present invention.

[0090] For example, the cylindrical wall of the cylindrical wall portion 4 of each groove foreign matter collector 1 has openings 41b and 43a formed in the same shape as the openings 31 in the rear wall portion 3, which serves as the first screen portion, but this is not limited to this and the openings may be formed in a shape different from that of the openings 31. In this case, it is preferable to form the openings formed in the cylindrical wall portion 4 to be smaller than the openings formed in the first screen portion, as this prevents foreign matter that can be separated by the first screen portion from flowing out to the outside through these openings.

[0091] Furthermore, although the openings 41b and 43a are formed on almost the entire surface of the cylindrical wall portion 4, this is not limited to this, and they may be formed only on a part of the cylindrical wall portion 4, or no openings may be formed on the cylindrical wall portion 4.

[0092] Furthermore, the opening 31 in the rear wall portion 3, which functions as the first screen portion, and the openings provided in the second screen portion and the third screen portion located upstream thereof are not limited to the configuration of the above embodiment, and their shape and size may be changed as long as the size of the opening formed in the screen portion located upstream is made larger than that on the downstream side. [Explanation of symbols]

[0093] 1 Foreign matter collector for grooves 10 Box-shaped part 2 Front wall 21 Opening 3 Rear wall 31 Opening 4 Cylinder wall 41 Upper wall 41a Slope 42 Bottom wall 43 Side wall 5 Inner wall 51 Slope 52 Extension section 53 Opening 6 Inner wall 61 Opening 7 Inner wall 71 Opening 8 Mounting material 81 Collector connection part 85 Groove engagement part 9 Regulatory elements C. Closure member c1 Through hole G groove g1 bottom g2 Stepped section H1 Hinge H2 hinge S opening T handle

Claims

[Claim 1] A foreign matter collector for a ditch that is installed in a ditch to separate and remove foreign matter from water flowing in the ditch, a bottomed cylindrical box-shaped portion including a rear wall portion disposed downstream of the water and a cylindrical wall portion connected to the rear wall portion, wherein at least the rear wall portion of the box-shaped portion is formed as a first screen portion that separates solids in the water; a second screen portion is formed in the box-shaped portion and is disposed upstream of the first screen portion at a distance from the first screen portion, and the second screen portion is formed to allow foreign matter of a size that can be separated from the water by the first screen portion to pass through; a third screen section is formed between the first screen section and the second screen section; the third screen portion is formed to allow foreign matter of a size that allows the first screen portion to separate from the water to pass therethrough, and to allow foreign matter of a size that allows the second screen portion to separate from the water, the cylindrical wall portion of the box-shaped portion includes an upper wall portion that closes the upper portion, and the upper wall portion is disposed directly above the third screen portion, A groove foreign matter collector characterized in that the upper wall portion has a sloped portion that slopes upward as it reaches the upstream side of the water, and the sloped portion is formed so as to protrude outward and upward from the box-shaped portion.

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