JP5378872B2 - Drainage drainage device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a draining device for a gutter which is attached to a street inlet in a gutter, is simplified in structure, effectively discharges rainwater toward a sewage pipe during rainfall, can normally reliably prevent odor and mosquitos from leaking to the outside of the street inlet, and can be easily controlled. <P>SOLUTION: This draining device for a gutter includes a water collecting hopper 18 having a water collecting part 22 which is opened at the upper end and which receives the rainwater flowing into a street inlet 16 and collects the rainwater to the bottom part, a cylindrical tube part 24 extending from the bottom part of the water collecting part 22 downward, a funnel part 26 which extends from the lower end of the cylindrical tube part 24 downward and the inner diameter of which is gradually reduced, and a discharge port 28 constituted by opening the lower end of the funnel part 26. The draining device further includes a valve element 20 which is formed by integrally attaching a floating member 36 smaller than the cylindrical tube part 24 of the water collecting hopper 18 and a weight 30 the bottom surface of which is formed in a spherical shape and the outer diameter of which is larger than the inner diameter of the lower end of the funnel part 26 to each other in the vertical direction. The floating member 36 of the valve element 20 is disposed so as to be movable in the vertical direction. The lower surface of the weight 30 is brought into water-tight contact with the inner peripheral edge of the lower end of the funnel part 26. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a drain device for a side ditch that is attached to the inside of a catchment provided in a gutter such as a road and discharges rainwater and the like flowing into the catchment to a sewer pipe.

  In drains of roads, etc., rainwater and other water that has flowed on the road (hereinafter referred to as “rainwater”) are collected at each predetermined interval and drained toward the sewer pipes buried underground. Is provided. However, this type of catchment can cause an unpleasant odor generated from the sewage flowing through the sewer pipe to leak out into the atmosphere due to a malfunction of the valve member provided between the catchment and the sewer pipe. was there. In addition, there is a problem that sludge easily collects at the bottom of the catchment basin, and rainwater collected at the bottom of the catchment basin becomes a source of mosquitoes and moths.

  Thus, conventionally, as a drainage device that is attached to a water collecting tank in a side groove and prevents the release of odors, mosquitoes, etc., there is a drainage device as disclosed in Patent Document 1, for example. This drainage device is provided with a hopper that receives rainwater flowing down through the rainwater outlet of the sewage lid on the lower side of the sewage lid attached to the upper opening of the catchment basin. The rotary plate-shaped valve element that is energized by the weight closes to block odors and prevents mosquitoes. During rain, the plate-shaped valve element is pushed downward by rainwater, and rainwater enters the sewer pipe. It is what flows.

  Further, as disclosed in Patent Document 2, as a valve body for drainage or the like, it is interposed in a connection portion between an upper water pipe extending from a drain port of an air conditioner and a lower water pipe opened to a drainage tub or the like. There is a drain valve that allows the drain water to flow but prevents the reverse flow of odor. This drain valve has a casing, a spherical valve body having a specific gravity smaller than that of water contained in the casing, and a valve in which the spherical valve body is seated by opening the bottom of a working chamber in which the spherical valve body is provided in the casing. And an outlet provided with a seat.

JP 2003-138638 A JP-A-8-5093

  However, in the case of the lateral groove rainwater introduction valve device of Patent Document 1, when foreign matter such as dust or sand is mixed in the device, if the foreign matter adheres to the plate-like valve body, the plate-like valve body is caused by the weight of the foreign matter. In some cases, the valve body may remain open or foreign matter may be caught between the plate-like valve body and the hopper opening so that the valve body does not close correctly. In particular, when a foreign object adheres to the vicinity of the support shaft of the plate-shaped valve body, there is a problem that even if it is a small foreign object, the tip of the oscillating plate-shaped valve body opens greatly.

  In addition, if the surface formed by the peripheral portion of the hopper opening of the valve device and the surface of the plate-like valve body do not exactly match, the odor from the sewage pipe cannot be reliably blocked. However, there is a certain variation in the individual shapes of the water collecting basin and the valve device, so in the state where the valve device is attached to the water collecting basin, they are formed due to their dimensional errors and twisting of each part due to them. In reality, it is impossible to accurately match the surface and the surface of the plate-like valve body. In addition, the effect of slight shaft misalignment due to the wear of the spindle part of the plate-like valve element also causes gaps, so that foreign matter adhering to the plate-like valve element and the spindle can be removed or the spindle part can be removed. This type of valve device has been cumbersome in terms of management because it is necessary to frequently perform maintenance and cleaning to repair the wear of the valve.

  On the other hand, since the drainage valve disclosed in Patent Document 2 closes the opening for drainage by a sphere, even if an attempt is made to open the spherical valve body by buoyancy, the area for receiving water pressure that becomes buoyancy is limited by the opening. Since it is small, it does not operate correctly unless it is a very light valve body, and conversely, the valve body may be always closed by the pressure of water. Therefore, this drain valve is applicable only when a small amount of clean fluid is flowing, and when a valve body having such a configuration is applied to a drain device for a side groove, a large channel and its channel A large spherical valve body is required to open and close the valve, and the valve body can be opened and closed by the buoyancy of running water. In addition, the valve body must be relatively light for opening the valve body due to buoyancy, and a certain amount of weight is required for the valve body to prevent odors. The contradictory function of prevention could not be achieved.

  The present invention has been made in view of the above-described background art, and has a simple structure and is attached to a water collecting basin in a lateral groove. When raining, rainwater and the like are effectively discharged toward a sewer pipe. An object of the present invention is to provide a drain device for a side gutter that can surely prevent odors, mosquitoes, etc. from leaking out of the cage and is easy to manage.

  This invention is attached to the inside of a water collecting basin of a gutter, collects rainwater flowing into the opening at the upper end of the water collecting basin, and passes the rainwater through an open / close valve that opens to drain the rainwater. A drainage device for a side ditch for discharging, which has an upper end opened, receives a rainwater flowing into the opening of the water collecting tank and collects it at the bottom, and extends downward from the bottom of the water collecting part. A cylindrical portion, a funnel portion extending downward from the lower end of the cylindrical portion and having an inner diameter gradually decreasing, and a discharge port formed by opening the lower end portion of the funnel portion. A floating member smaller than the cylindrical portion of the water collecting hopper, and a weight having a lower surface formed in a spherical shape and having an outer diameter larger than the inner diameter of the lower end portion of the funnel portion of the water collecting hopper, Includes a valve body integrally attached to the top and bottom, and the floating member of the valve body Is vertically movably disposed in the cylindrical portion of the hopper, the lower surface of the weight is a gutter drainage device is contactable to a watertight inside periphery of the funnel bottom portion.

  The cylindrical portion is a cylindrical tube portion that extends vertically downward from the bottom portion of the water collecting portion, and the funnel portion extends downward from a lower end of the cylindrical tube portion, and the cylindrical tube The weight is formed so that the inner diameter is gradually reduced, and the weight has an outer diameter smaller than that of the floating member, and the floating member and the weight are vertically moved by a connecting member having a narrow central portion. Are integrally connected to each other.

  In addition, the inner wall surface of the cylindrical tube portion is provided with a plurality of guide portions that project inwardly and are formed in the shape of elongated stripes in the vertical direction, and the distal end surface of each guide portion is close to the side surface of the floating member. The floating member is positioned in the horizontal direction.

  Further, the water collecting part may be provided with a filter for removing foreign matters mixed in rain water, and the rain water flowing into the water collecting part may pass through the filter and flow into the cylindrical part.

  Further, the water collecting hopper is provided with an umbrella member for preventing rainwater from flowing down to the upper surface of the floating member above the floating member accommodated in the cylindrical portion. Furthermore, the lower surface of the umbrella member and the upper surface of the floating member may be connected via an auxiliary spring that is vertically extendable.

  The drain device for a side gutter of the present invention has a simple configuration, and when the rainwater flowing into the water collecting hopper from the opening of the water collecting basin exceeds a certain amount, the valve body floats from the funnel portion to open the flow path. Rainwater is discharged from the outlet, and when the rainwater falls below a certain amount, the valve body touches the funnel part by its own weight and closes the flow path, so that the opening and closing operation is performed reliably and the durability is high. . Further, since there are no members that are easily consumed during use, maintenance and other management are easy. In addition, the bottom surface of the weight of the valve body is formed in a spherical shape, and the funnel portion of the water collecting hopper is formed in a circular shape so that the bottom surface of the weight can be seated. The lower surface of the weight and the inner peripheral edge of the funnel can be evenly contacted with no gap.

  Furthermore, since the weight is integrally connected up and down by the floating member and the thin connecting member, it does not float up to the extent that rainwater has entered the water collecting hopper, and it is ensured that rainwater collects up to the position of the floating member. Since the buoyancy acts on the floating member and the floating member floats, the operation of the valve body is reliable.

  In addition, since the cylindrical portion, funnel portion, and discharge port of the water collecting hopper are configured in a columnar shape or a circular shape, the stability of the structure is high, and the contact between the bottom surface of the weight and the inner peripheral edge of the funnel portion is good. Easy to ensure contact. Moreover, the vertical movement of the valve body can be performed more smoothly by providing a plurality of guide portions on the inner wall of the cylindrical tube portion.

  In addition, by providing a filter to remove foreign matter such as pebbles and wood chips that flow in the rainwater in the water collection section, foreign matter can be prevented from flowing into the sewer pipe, and foreign matter can adhere to the valve body and funnel. It is possible to prevent a failure from occurring in the opening / closing operation of the flow path.

  In addition, an umbrella member is provided at a position above the floating member in the water collection hopper to prevent rainwater flowing into the opening of the water collecting basin from flowing down to the upper surface of the floating member, thereby moving the valve body upward. The buoyancy to be prevented from being lost by rainwater flowing down from above, and an unstable operation in which the valve body tilts can be easily avoided. Furthermore, the balance between the weight of the valve element and the buoyancy can be adjusted to an optimum state by connecting the lower surface of the umbrella member and the upper surface of the floating member with a retractable auxiliary spring.

It is a perspective view which shows 1st embodiment of the drainage device for side grooves of this invention. It is a top view which shows the water collection hopper which comprises 1st embodiment. It is a front view which shows the water collection hopper which comprises 1st embodiment. It is a right view which shows the water collection hopper which comprises 1st embodiment. It is the perspective view (a) and front view (b) which show the valve body which comprises 1st embodiment. It is a schematic diagram explaining operation | movement when rainwater is not flowing in 1st embodiment. It is a perspective view which shows a general rainwater inspection lid | cover. It is a schematic diagram explaining operation | movement when rainwater is flowing into 1st embodiment. It is a schematic diagram explaining operation | movement of 2nd embodiment of the drain device for side grooves of this invention. It is a schematic diagram explaining operation | movement when an auxiliary | assistant spring is provided in 2nd Embodiment. It is a perspective view which shows 3rd embodiment of the drain device for side grooves of this invention. It is AA sectional drawing (a) explaining the operation | movement when rain water is flowing in 3rd embodiment, BB sectional drawing (b).

  Hereinafter, a side groove drainage device 10 according to a first embodiment of the present invention will be described with reference to FIGS. The gutter drainage device 10 is a drainage device that is attached to a water collecting basin 16 provided in a side gutter 14 of the road 12, and collects rainwater that has flowed into the opening 16a of the water collecting basin 16 as shown in FIG. The water collecting hopper 18 that forms a flow path that flows toward the bottom 16 b of the water collecting basin 16, and the valve body 20 that is disposed inside the water collecting hopper 18 and opens and closes the flow path of the rainwater in the water collecting hopper 18. It has.

  As shown in FIGS. 2 to 4, the water collecting hopper 18 has a rectangular opening end 22 a opened to the size of the opening 16 a of the water collecting bowl 16 at the upper end, and inward from the opening end 22 a to the lower side. A water collecting part 22 that connects a plurality of inclined planes to collect water at the center, and a cylindrical pipe part 24 that is a cylindrical part that extends downward from a substantially central bottom part of the water collecting part 22. . Furthermore, from the lower end of the cylindrical tube portion 24 to the lower side, a funnel portion 26 is provided coaxially with the cylindrical tube portion 24 so that the inner diameter of the cylindrical portion is gradually narrowed, and the lower end of the funnel portion 26 is opened, It becomes the discharge port 28 which discharges rainwater. These parts need to be configured using a metal such as a stainless steel plate or reinforced plastic, and ensure a certain strength and shape stability. Therefore, here, a plurality of stainless steel plates that have been processed into a predetermined shape in advance are joined together by joining their edges by a method such as welding.

  The inner peripheral edge of the lower end opening of the funnel portion 26 is a valve seat on which a spherical lower surface 30a formed on a weight 30 (to be described later) that is a valve of the valve body 20 is seated, and is a portion that seals the rainwater flow path. is there. Therefore, in order to obtain high sealing performance, a rubber packing 32 having a thin ring shape is attached.

  In addition, on the inner wall surface of the cylindrical tube portion 24, three guide portions 34 that protrude inward and are formed in the shape of elongated stripes in the vertical direction are provided at equal intervals in the axial direction. The guide 34 has an inward-facing tip end surface 34a that is in close proximity to a side surface of a columnar floating member 36 of the valve body 20 to be described later, and serves to position the floating member 32 in the horizontal direction.

  In general, the road surface of the road 12 and the opening 16a of the water collecting basin 16 are provided at a predetermined angle to collect rainwater. Therefore, the opening end 22a of the water collecting portion 22 is also inclined slightly upward as shown in FIG. 4 in accordance with the inclination angle of the opening 16a of the water collecting basin 16. A locking portion 38a extends outwardly on the higher side of the inclined opening end 22a, and a locking portion 38b extends outwardly on the lower side. And the water collection hopper 18 is attached to the edge part of the opening part 16a of the water collection tank 16 by engaging the lower surface side of locking piece 38a, 38b, and the axis | shaft of the cylindrical pipe part 24 is perpendicular | vertical in that state. It is arranged to become.

  On the other hand, as shown in FIG. 5, the valve body 20 has a columnar floating member 36 accommodated in the cylindrical tube portion 24 of the water collection hopper 18 and a lower surface 30a formed in a spherical shape. A weight 30 that is larger than the inner diameter of the packing 32 of the water hopper 18 and smaller than the outer diameter of the floating member 36, and a thin connecting member that integrally connects the lower surface 36 b of the floating member 36 and the upper surface 30 b of the weight 30. It consists of a rod 37.

  The side surface 36 a of the floating member 36 has an outer diameter that fits in close proximity to and parallel to the front end surfaces 34 a of the three guides 34 provided in the water collection hopper 18. Further, the upper surface 36b is raised in a gentle conical shape, and the lower surface 36c is formed flat. The floating member 36 is a member that generates buoyancy that floats the entire valve element 20 including the weight 30 in water. Here, a plurality of stainless steel plates that have been processed into a predetermined shape are welded and joined together to form a hollow interior. It is an airtightly sealed structure.

  The weight 30 is a metal structure, and has a sufficient weight so that the spherical lower surface 30 a abuts the packing 32 in a watertight or airtight manner when placed on the packing 32 of the water collecting hopper 18. . Moreover, although the upper surface 30b has the shape which protruded in the gentle cone shape, a different shape may be sufficient. The central portion of the lower surface 36 c of the floating member 36 and the upper end of the upper surface 30 b of the weight 30 are connected and fixed by the connecting rod 37.

  Next, operation | movement of the drainage apparatus 10 for gutters installed in the water collecting tank 16 is demonstrated based on FIGS. As shown in FIG. 6, the opening 16 a of the catchment 16 is inclined downward to the left continuously from the road surface of the road 12, and the stepped portion 16 c is lower on the higher edge portion of the opening 16 a. Steps 16d are respectively formed at the edge portions of. The water collecting hopper 18 is inserted into the opening 16a from the discharge port 28 side, the lower surface sides of the locking portions 38a and 38b are engaged with the step portions 16c and 16d, respectively, and the cylindrical tube portion 24 is in contact with the ground. Arranged almost vertically. Then, as shown in FIG. 7, an inspection lid 40 having a size that can be accommodated in the stepped portions 38a and 38b is attached from above, and the opening 16a of the water collecting basin 16 is closed, and at the same time, the water collecting hopper 18 is fixed.

  The inspection lid 40 is normally closed and is a metal plate that can be opened when an operator inspects the inside of the water collecting tank 18, etc., as shown in FIG. A notch 40a used as a handle is provided. In addition, a rainwater outlet 40b for flowing rainwater and the like flowing on the road 12 is opened at a portion of the rectangular outer shape that is biased toward the notch 40a. As shown in FIG. 6, the inspection lid 40 is attached in such a direction that the notch 40 a and the rain water outlet 40 b are located on the lower side of the opening 16 a of the catchment basin 18 so that rain water flowing on the road 12 can be as much as possible. Collect water downstream.

  FIG. 6 shows a state when the weather is good and rainwater does not flow in the cylindrical tube portion 24. Since the buoyancy due to rain water does not work, the valve body 12 descends in the cylindrical tube portion 24 and sits on the funnel portion 26. The weight 30 has its lower surface 30a abutted against the packing 32 of the funnel portion 26 by its own weight, and seals the rainwater passage in a watertight or airtight manner. Further, if rainwater at the time of raining remains in the contact portion, the airtightness is further increased. Therefore, this sealed structure prevents odor leakage to the outside of the water collecting basin 16 and generation of mosquitoes and the like.

  On the other hand, when the weather worsens and it starts to rain, as shown in FIG. 8, the rain water flowing down from the rain water port 38 b of the inspection lid 40 is collected by the water collecting portion 22 and flows into the cylindrical tube portion 24. When a certain amount of rainwater flows into the cylindrical tube portion 24, buoyancy is generated in the floating member 36, the floating member 36 floats almost vertically along the guide portion 34, and the weight 30 also moves upward integrally. To do. Then, when the lower surface 30 a of the weight 30 is separated from the packing 32, the rainwater flow path is opened, and rainwater is discharged from the discharge port 28.

  As described above, the side groove drainage device 10 has a very simple structure, and the bottom surface 30a of the weight 30 is sealed by the packing 32 of the funnel portion 26 due to the weight of the valve body 20 when the rainwater does not flow. The rainwater channel is sealed in a watertight or airtight manner. The lower surface 30a of the weight 30 is formed in a spherical shape, and the packing 32 on which the weight 30 is seated is also circular, so that foreign matter such as sludge is difficult to adhere to the weight 30, and the weight 30 is inclined even if the weight 30 is slightly inclined. There is no gap between the lower surface 30a and the packing 32, and it is possible to always contact evenly.

  Moreover, since the cylindrical pipe part 24, the funnel part 26, and the discharge port 28 of the water collection hopper 18 all have a three-dimensional structure based on a circle, when the water collection hopper 18 is attached to the water collection tank 16, Even if the shape of the water collecting portion 22 is slightly twisted due to the variation in the shape of the water collecting rod 16, the lower portion from the cylindrical tube portion 24 is hardly deformed, and a good contact between the lower surface 30a of the weight 30 and the packing 32 is obtained. A contact state can be realized. In addition, since stress does not concentrate on a specific member during use and no wear or deformation occurs, maintenance and other management are easy. Moreover, even when the flow path in the cylindrical tube portion 24 is opened and rainwater is flowing, the presence of the rainwater maintains the airtightness of the flow path and blocks odor.

  Further, by providing the streak-shaped guide portion 34 on the inner wall of the cylindrical tube portion 24, the inclination of the floating member 36 is prevented, and the frictional force generated on the side surface 36 a of the floating member 36 is suppressed to be small. The movement can be smoothed. Further, the weight body 30 is configured so that the weight 30 fulfills the function of abutting and sealing against the packing 20 and the function of generating buoyancy against rainwater is fulfilled by the floating member 36, so that a reliable opening / closing operation is performed. That is, since the floating member 36 acts on the entire lower surface of the floating member 36 to effectively obtain buoyancy, the valve body 20 is reliably opened and closed with a constant amount of water even if the weight 30 is somewhat heavy.

  Next, a gutter drainage device 50 according to a second embodiment of the present invention will be described with reference to FIGS. Here, the same configurations as the side groove drainage device 10 of the first embodiment are denoted by the same reference numerals and description thereof is omitted. As shown in FIG. 9, the side groove discharge device 50 is attached to the tip of an umbrella member support portion 54 that is provided with an umbrella member 52 so as to cover the upper side of the floating member 36 and extends to the upper ends of the three guide portions 34. Provided. The other configuration is the same as that of the side groove discharging device 10.

  When the umbrella member 52 is not provided, the rainwater that has flowed from the rainwater port 40 b of the inspection lid 40 flows directly to the upper surface 36 b of the floating member 36, and a downward force acts on the floating member 36. Thereby, the buoyancy to be moved upward is reduced, and when the flow rate of rainwater is large, the valve body 20 may not be able to rise. Further, since the rainwater outlet 40b of the inspection lid 40 is located obliquely above the floating member 36, the rainwater flow concentrates on a biased position on the upper surface 36b of the floating member 36, and as a result, the floating member 36 tilts. The valve body 20 may not be able to smoothly move up and down.

  Therefore, by providing the umbrella member 52 above the floating member 36 and preventing rainwater from flowing down to the upper surface 36b of the floating member 36, the above problem can be easily avoided and the operation of the floating member 36 is more stable. Can be.

  Further, as shown in FIG. 10, an auxiliary spring 56 that can expand and contract in the vertical direction may be connected between the lower surface of the umbrella member 52 and the upper surface 36 b of the floating member 36. For example, if only a small floating member 36 can be provided due to structural limitations of the device and the buoyancy for floating the valve body 20 is insufficient, the contraction force is increased in the direction of lifting the floating member 36 to the umbrella member 56. The auxiliary spring 56 to be generated can be connected to compensate for the lack of buoyancy of the floating member 36. Further, when the buoyancy of the floating member 36 is sufficiently secured, for example, an auxiliary spring 56 that generates an extension force in a direction in which the floating member 36 is pulled away from the umbrella member 56 is connected, and the floating member 36 that floats in rainwater is connected. An operation for absorbing irregular vertical vibrations may be performed.

  Next, a gutter drainage device 60 according to a third embodiment of the present invention will be described with reference to FIGS. Here, the same components as those in the above-mentioned lateral groove discharging apparatus 10 are denoted by the same reference numerals and description thereof is omitted. As shown in FIG. 11, the gutter drainage device 60 has an umbrella member 62 attached to a slightly lower portion of the opening end 22 b of the water collecting portion 22, and the rainwater flow path formed inside the cylindrical pipe portion 24 is moved upward. And the flow path spaces 64 a and 64 b that serve as rainwater flow paths are formed on the left and right sides of the umbrella member 62. In addition, filter walls 66a and 66b for removing pebbles and wood chips flowing in the rainwater are provided at the boundary portions between the flow path spaces 64a and 64b of the water collecting section 22 and the cylindrical pipe section 24b. The other configuration is the same as that of the side groove discharging device 10.

  The umbrella member 62 is attached to the inner surface of the water collecting portion 22 by a method such as screwing. Then, as shown in FIGS. 12A and 12B, the rainwater is prevented from flowing down to the upper surface 36b of the floating member 36, and the rainwater received by the umbrella member 62 is poured into the flow path spaces 64a and 64b. It serves to guide rainwater to pass through the filter walls 66a and 66b.

  As shown in FIG. 12A, the filter walls 66a and 66b are provided like a dike that dams rainwater flowing through the flow path spaces 64a and 64b immediately before the cylindrical pipe portion 24. This is a structure in which a punching metal having a large number of through holes formed in a triangular metal plate is detachably attached.

  According to this side groove drainage device 60, although it has a very simple structure, it is caused by the same effect as the umbrella member 52 described above and the adhesion of foreign matter in rainwater to the valve body 20 and the funnel portion 26. The effect of preventing the malfunction of the opening and closing operation of the flow path can be obtained. Further, since the filter walls 66a and 66b are detachably attached, it is convenient for removing the collected foreign matter and for cleaning the filter walls 66a and 66b cleanly.

  The drain device for a side ditch of the present invention is not limited to the above embodiment, and the opening end and the engaging portion of the water collecting hobber collect most of the rainwater flowing into the water collecting trough opening. If it is a form with an outer shape of the open end that can be received and collected and an attachment structure that can be attached to the edge of the opening of the catchment, it can be freely changed according to the form of the catchment at the installation site can do.

  In addition, the water collecting portion may have, for example, a cone or other curved inclined surface shape as long as it functions as a funnel for collecting rainwater from the open end to the upper end of the cylindrical tube portion below. Also good.

  In addition, the sealing structure in which the lower surface of the weight is seated on the funnel is only required to have an airtight or watertight contact state, and a metal weight, rubber packing, or O-ring is applied. In addition to the contact structure, for example, a form in which a weight having a lower surface formed of a sealing material and a metal funnel portion abut may be used. Further, the connection between the weight and the floating member may be a string or a chain other than the connecting rod, and may be fixed directly to the weight with a screw or the like as long as buoyancy is effectively generated in the floating member.

  In addition, the filter provided in the water collecting portion is not particularly limited as long as it collects foreign matter before rainwater flows into the cylindrical tube portion. For example, the filter walls 66a and 66b in the side groove drain device 60 may be replaced with a resin plate provided with slit-shaped through holes, a metal net having a mesh with a predetermined shape, or the like.

10, 50, 60 Side groove drainage device 14 Side groove 16 Water collecting trough 16a Opening portion 18 Water collecting hopper 20 Valve body 22 Water collecting portion 22a Open end 24 Cylindrical tube portion 26 Funnel portion 28 Outlet port 30 Weight 30a Lower surface 32 Packing 34 Guide part 34a Tip surface 36 Floating member 42 Sewage pipes 52, 62 Umbrella member 56 Auxiliary springs 64a, 64b Channel space 66a, 66b Filter wall

Claims (5)

For side grooves that are attached to the inside of the water collecting basin of the side groove and collect the rainwater flowing into the opening at the upper end of the water collecting basin and pass it through a channel with an open / close valve that opens to drain the rainwater. In drainage equipment,
A water collecting part that is open at the top and receives rainwater flowing into the opening of the water collecting tank and collects it at the bottom, a cylindrical part that extends downward from the bottom of the water collecting part, and the cylindrical part A water collecting hopper provided with a funnel portion extending downward from the lower end of the funnel portion formed so that the inner diameter gradually decreases, and a discharge port formed by opening the lower end portion of the funnel portion,
A floating member smaller than the cylindrical portion of the water collecting hopper and a weight whose bottom surface is formed in a spherical shape and whose outer diameter is larger than the inner diameter of the lower end portion of the funnel portion of the water collecting hopper are integrally attached vertically. Equipped with a valve body,
A plurality of guide portions projecting inward are provided on the inner wall surface of the cylindrical portion, and the front end surface of each guide portion is close to the side surface of the floating member so as to position the floating member in the horizontal direction. Done
The floating member of the valve body is disposed so as to be movable up and down in the cylindrical portion of the water collecting hopper, and the lower surface of the weight is provided so as to be in watertight contact with the inner peripheral edge of the lower end portion of the funnel portion. Drainage device for gutter characterized by that.   The cylindrical portion is a cylindrical tube portion that extends vertically downward from the bottom portion of the water collecting portion, and the funnel portion extends downward from a lower end of the cylindrical tube portion, and the cylindrical tube The weight is formed so that the inner diameter is gradually reduced, and the weight has an outer diameter smaller than that of the floating member, and the floating member and the weight are vertically moved by a connecting member having a narrow central portion. The drain device for a side ditch according to claim 1, which is integrally connected to each other.   The drainage device for side grooves according to claim 1 or 2, wherein a filter for removing foreign matter mixed in rainwater is provided in the water collecting portion, and the rainwater flowing into the water collecting portion flows into the cylindrical portion through the filter. .   4. The umbrella according to claim 1, wherein the water collecting hopper is provided with an umbrella member that prevents rainwater from flowing down to an upper surface of the floating member above the floating member accommodated in the cylindrical portion. Drainage device for gutter.   The drainage device for a side groove according to claim 4, wherein the lower surface of the umbrella member and the upper surface of the floating member are connected via an auxiliary spring that is vertically expandable and contractible.

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