JP2021080695A - Water stopping device - Google Patents

Abstract

To provide a water stopping device with which water flowing into the device can be drained to a rainwater channel even during power failure.SOLUTION: A water stopping device 1 which is buried underground or below floor and in which a water stopping plate 50 that obtains buoyancy from water flowing into the device rises to block water is equipped with a water stopping unit 40, a drainage pump 70, and a power failure guarantee part 78, the water stopping unit is equipped with an inflow tank 41 into which water flows, a water tank 43 that is buried adjacent to the inflow tank and is deeper than the inflow tank, a third drainage port 76 which can be provided in the water tank at a water level at which the water stopping plate does not rise and at a height at which drainage can be performed in the rainwater channel, and a water stopping plate that obtains buoyancy from the water collected in the water tank, the drainage pump pumps up the water drained from the inflow tank and the water tank to the rainwater channel, the power failure guarantee part stops the drainage from the third drainage port at the time of power transmission and allows drainage from the third drainage port during power failure.SELECTED DRAWING: Figure 2

Description

The present invention relates to a water blocking device that is embedded in the ground or a floor surface and obtains buoyancy by the water flowing into the device to raise the water blocking plate to block the water.

Conventionally, when the water that has flowed into the catchment pit does not reach the waterline and the rainfall stops, the water remains in the catchment pit as it is, and if this is repeated, the flood control plate will rise even during normal rainfall, which is not a flood. For the purpose of solving the problem to be solved, Japanese Patent Application Laid-Open No. 2003-253715 is provided with a drainage pump so that water such as rainwater can be drained even if water such as rainwater flows into the catchment pit during normal rainfall. , The flood shield does not surface, and when the flood occurs, the flood plate floats, and after floating, when the water drains, the accumulated water in the water collection pit is drained and the flood plate is collected. A floating flood control device that can be stored in a pit is disclosed.

Here, although the sewer pipe is generally buried at a relatively deep position, rainwater cannot be drained, and the rainwater channel or the rainwater pipe (hereinafter referred to as "rainwater channel") is arranged at a relatively shallow position. ing. Therefore, the only way to drain the water from the catchment pit to the rainwater channel without a drainage pump was to make the catchment pit shallow.

Japanese Unexamined Patent Publication No. 2003-253715

However, in the technique disclosed in Patent Document 1, although there is no problem with drainage when the drainage channel is lower than the bottom of the catchment pit, there is no description about drainage when the drainage pump does not operate during a power failure.

The present invention has been made in view of the above points, and an object of the present invention is to provide a water stop device capable of draining water flowing into the device into a rainwater channel even in the event of a power failure.

(1) The water stop device of the present invention is
A water stop device that is buried in the ground or floor and gains buoyancy by the water flowing into the device, and the water stop plate rises to block the water.
The water stop device includes a water stop unit, a drainage pump, and a power failure guarantee unit.
The water stop unit
An inflow tank that is buried in the ground or floor and into which water flows in,
The first drainage port provided at the bottom of the inflow tank and
A water tank that is buried in the ground or floor adjacent to the inflow tank and is deeper than the inflow tank.
A communication port that communicates the inflow tank and the water storage tank,
A second drainage port provided at the bottom of the water tank and
A third drainage port provided in the water storage tank at a water level at which the water stop plate does not rise and at a height at which drainage can be performed in the rainwater channel.
A water stop plate that obtains buoyancy by the water accumulated in the water tank when water that is housed in the water tank and exceeds the drainage amount of the first drain port and the second drain port flows in.
A packing for maintaining watertightness between the water storage tank and the water stop plate is provided.
The drainage pump pumps up water drained from at least the second drainage port of the first drainage port and the second drainage port to the rainwater channel.
The power failure guarantee unit is characterized in that it stops drainage from the third drainage port during power transmission and does not interfere with drainage from the third drainage port during a power failure.

According to the water stop device of the present invention, since the third drain port and the power failure guarantee unit are provided, the water flowing into the device can be drained by the drainage pump at the time of power transmission, and drained through the third drain port at the time of power failure. be able to.

(2) A preferable example of the water stop device of the present invention is
It is characterized by including a water supply pipe for arbitrarily inflowing water into the inflow tank or the water storage tank, and a drainage stop mechanism for temporarily stopping the drainage of the first drainage port and the second drainage port.

According to a preferred example of the water stop device of the present invention, since the water supply pipe and the drainage stop mechanism are provided, water can be stored in the water tank regardless of the presence or absence of precipitation, and it is easy to check the operation at the time of installation or after maintenance. Can be.

(3) A preferable example of the water stop device of the present invention is
The packing has a cross-section hat shape in which a straight portion of the D-shaped cross section is extended as a bottom portion, and the bottom portion is configured to be harder than other portions, and a pair of metal fittings having an L-shaped cross section for fixing the packing are provided. The packing is provided upside down so as to face the side surface of the water storage tank, and the bottom portion is inserted and fixed between the packing fastening and the side surface of the water storage tank.

According to a preferred example of the water stop device of the present invention, the packing can be attached by inserting the extended bottom portion of the packing having a hat-like cross section into the packing clasp, and the packing can be attached at the time of manufacturing and maintenance of the water stop device. It is possible to reduce the work man-hours for packing replacement. Further, since the bottom of the packing is made harder than the other parts of the packing, it is possible to prevent the packing from coming off from the packing fastener.

As described above, according to the water stop device of the present invention, the water flowing into the device can be drained to the rainwater channel even during a power failure.

It is a figure explaining the concrete frame of the water stop device of this invention. It is a figure which shows typically the state which attached the water stop unit and the like to the cross-sectional view taken along line AA of FIG. It is not necessary to explain packing and packing fastening.

Hereinafter, embodiments of the water blocking device 1 of the present invention will be described in detail with reference to the accompanying drawings.
As shown in FIGS. 1 and 2, the water stop device 1 of the present embodiment includes a concrete frame 10, a water stop unit 40, and a drainage pump 70. The concrete frame 10 includes a main body frame 20 and an inspection frame 30.

The main body frame 20 is made of concrete and is embedded so as to cross a frontage or a passage such as a ground or a floor surface, and includes an opening 21, a fitting groove 22, and a first through hole 23. The opening 21 is provided on the upper surface of the main body frame 20. The fitting groove 22 is provided downward from the opening 21 and has a substantially inverted L shape in cross-sectional view. The water blocking unit 40 is fitted in the fitting groove 22. Further, the opening 21 of the fitting groove 22 is formed to be the widest by making the side surface 63 slanted, and the fitting groove 22 becomes narrower toward the bottom 28. The first through hole 23 is provided on the side surface of the main body frame 20 so as to communicate with the fitting groove 22, and the operator performs the work of connecting the pipe to the water stop unit 40, maintenance, and the like. Further, a connection hole 24 for connecting to the first drainage port 71 (details will be described later) is provided on the upper surface of the first through hole 23. Instead of the connection hole 24, a part of the upper surface of the first through hole 23 can be removed. Further, in the water stop device 1 of the present embodiment, the concrete frame 10 bears the main skeleton for supporting the entire device and withstanding the load of a vehicle or the like passing over the device. Therefore, the load bearing performance is excellent.

In the water stop device 1 of the present embodiment, the main body frame 20 is divided into three parts, a central frame 26 and a pair of end frames 27a and 27b connected to both sides of the central frame 26 in the longitudinal direction. This is to facilitate the manufacture and transportation of the main body frame 20. Therefore, various things such as two divisions, four divisions, and five divisions can be used depending on the dimensions of the main body frame 20 in the longitudinal direction. Further, in the two divisions, a plate (not shown) can be attached to one side of the main body frame 20 to serve as the end of the fitting groove 22 of the main body frame 20. It is preferable that the central frame 26 and the end frames 27a and 27b are connected by bolts or the like (not shown), and a packing for waterproofing is arranged or caulking or the like is provided at the connected place (main body frame). The same applies to the connection between 20 and the inspection frame 30). Further, a bolt 25 or a hole for the bolt is provided around the opening 21 on the upper surface of the main body frame 20, and the water blocking unit 40 can be fixed after being mounted. For the bolt 25 for fixing the water stop unit 40, for example, a bolt 25 having a special head shape can be adopted to prevent the water stop unit 40 from being stolen.

The inspection frame 30 is made of concrete and is connected to the side surface of the main body frame 20, and includes a lower frame 31, a second through hole 32, a top plate 33, an inspection port 34, and an inspection lid 35. The lower frame 31 has a box shape, and a drainage pump 70, piping, and the like are housed inside the lower frame 31. The second through hole 32 is a hole provided on the side surface of the lower frame 31 so as to correspond to the first through hole 23 of the main body frame 20. The top plate 33 covers the open upper surface of the lower frame 31, and has sufficient load-bearing performance for vehicles and the like passing over the top plate 33. The inspection port 34 is provided in a part of the top plate 33, and the inspection lid 35 is normally closed, and an operator enters and exits from the inspection port 34 during maintenance or the like. The top plate 33 itself can be used as a substitute for the inspection port 34.

The water stop unit 40 includes an inflow tank 41, a water storage tank 43, a water stop plate 50, and a packing 60. The inflow tank 41 is provided on the outdoor side of the water stop unit 40 or on the side where water comes in the event of a flood, and is a relatively shallow tank. A groove lid 42 such as a grating 42 is provided on the upper surface of the inflow tank 41 so that water or the like can pass therethrough. Further, a first drain port 71 for draining the water flowing into the inflow tank 41 is provided in the lower part of the inflow tank 41, and the first drain pipe 72 is connected via the connection hole 24 of the main body frame 20. .. Further, the inflow tank 41 is provided with a communication port 44 that communicates with the water storage tank 43. The communication port 44 is provided at a position about 3 to 10 cm higher than the bottom of the inflow tank 41, and the water flowing in during normal rainfall is drained through the first drain port 71 so that the water does not go to the water storage tank 43. ing. On the other hand, when water exceeding the amount of drainage from the first drainage port 71 flows into the inflow tank 41 due to heavy rain or the like, the water level in the inflow tank 41 rises, and water flows from the inflow tank 41 toward the water storage tank 43 through the communication port 44. It is configured to flow in. The width w1 of the bottom portion of the inflow tank 41 is substantially the same as the width of the fitting groove 22 of the main body frame 20 of the portion, and the bottom portion of the inflow tank 41 is fixed so as to be sandwiched between the fitting grooves 22.

The water storage tank 43 is fitted in the fitting groove 22 adjacent to the inflow tank 41, and is deeper than the inflow tank 41. Further, a second drainage port 73 is provided at a position corresponding to the first through hole 23 at the lower part of the water storage tank 43, and the second drainage pipe 74 is connected to the second drainage port 73. The water flowing into the water storage tank 43 is drained through the second drain port 73. Here, when water exceeding the amount of drainage of the first drainage port 71 and the second drainage port 73 flows into the inflow tank 41 and the water storage tank 43 due to heavy rain or the like, water accumulates inside the water storage tank 43 to obtain buoyancy. The water plate 50 is raised. The width w2 of the bottom portion of the water storage tank 43 is configured to have substantially the same width as the bottom portion 28 of the fitting groove 22 of the main body frame 20, and the bottom portion of the water storage tank 43 is fixed so as to be sandwiched between the fitting grooves 22. Further, the bottom of the water storage tank 43 is located deeper than the rainwater channel 83, and the water storage tank 43 is configured deeper than the rainwater channel 83. A pillar 45 for reinforcement is appropriately provided between the inflow tank 41 and the water storage tank 43.

Further, the water storage tank 43 is provided with a third drain port 76. This is to prevent the drainage pump 70 from stopping and water from accumulating in the water storage tank 43 in the event of a power failure, causing the water stop plate 50 to float. The third drain port 76 is provided at a position corresponding to the first through hole 23 of the water storage tank 43 at a water level at which the water stop plate 50 does not rise and at a height at which drainage can be performed in the rainwater channel 83. A third drainage pipe 77 is connected to the third drainage port 76 and extends to the rainwater channel 83. Further, the third drain pipe 77 is provided with a power failure guarantee unit 78 that is closed at the time of power transmission to stop the drainage from the third drain port 76 and is opened at the time of a power failure to prevent the drainage from the third drain port 76 from being hindered. As the power failure guarantee unit 78, a valve using a solenoid valve is used. As a result, even if the drainage pump 70 does not operate in the event of a power failure, water is drained from the third drainage port 76 in normal precipitation while having a water tank 43 configured deeper in the ground than the rainwater channel 83, and a water stop plate is provided. 50 never floats. The third drainage port 76, the third drainage pipe 77, and the power failure guarantee unit 78 are not limited to the mode in which the concrete frame 10 is used as in the water stop device 1 of the present embodiment, and other stops provided with a drainage pump. Of course, it can also be applied to water equipment.

Further, a water supply pipe 81 is connected to the inflow tank 41 or the water storage tank 43. The water supply pipe 81 is provided at a position corresponding to the first through hole 23 of the inflow tank 41 or the water storage tank 43, and is connected to the water storage tank 43 in the present embodiment. When connecting to the inflow tank 41, a hole may be provided on the upper surface of the first through hole 23 and the connection may be made from there. The water supply pipe 81 is provided with a water supply valve 82, and the operator can arbitrarily select whether or not to supply water.

Further, a drainage stop mechanism 75 for temporarily stopping drainage from the first drainage port 71 and the second drainage port 73 is provided. In the present embodiment, the drainage stop valve 75 is provided downstream of the confluence of the first drainage pipe 72 and the second drainage pipe 74, but the drainage pump 70 is forcibly stopped depending on the mode of the drainage pump 70 and the drainage tank 84. Etc. may be used. With these water supply pipes 81 and the drainage stop mechanism 75, water can be forcibly stored in the water storage tank 43 and the inflow tank 41, and the operation of the water stop device 1 can be easily confirmed. It is also possible to automatically operate the drainage stop valve in the event of a power failure to prevent water from flowing to the drainage pump 70.

Further, a packing 60 for maintaining watertightness with the water stop plate 50 is provided on the upper part of the water storage tank 43. As shown in FIG. 3, the packing 60 has a cross-sectional hat shape in which a straight portion of the D-shaped cross section serves as a bottom portion 61 and is stretched, and the bottom portion 61 is configured to be harder than the other portions. Further, the packing 60 is fixed to the packing fastening 62. The packing fastening 62 is attached to the side surface 63 of the water tank 43 so that a pair of shaped steels having an L-shaped cross section face each other upside down, and the bottom portion 61 of the packing 60 is inserted between the side surface 63 of the water storage tank 43 and the shaped steel. And fixed.

Returning to FIGS. 1 and 2, the water stop plate 50 is buoyant by the water accumulated in the water tank 43 when the water exceeding the drainage amount of the first drain port 71 and the second drain port 73 flows into the water tank 43. To get. A water stop plate 51 is provided on the upper part of the water stop plate 50 so as not to obstruct the passage of vehicles, people, etc. in normal times. Further, when the water stop plate 50 is raised, the water stop plate 50 is supported by guide portions 52 provided at both ends in the longitudinal direction of the water storage tank 43 so as not to fall.

The drainage pump 70 is provided inside the inspection frame 30 and pumps up the drainage from the first drainage port 71 and the second drainage port 73 collected in the drainage tank 84 to the rainwater channel 83. As a result, the water flowing into the water stop unit 40 can be drained to the rainwater channel 83 installed at a relatively shallow position instead of the drainage pipe installed at a relatively deep position. It is preferable that the check valve 80 is provided in the secondary side pipe 79 of the drainage pump 70. When the depth of the first drainage port 71 is such that it can flow into the rainwater channel 83, the first drainage pipe 72 from the first drainage port 71 is a second drainage pipe like the water stop device 1 of the present embodiment. It may be arranged directly to the rainwater channel 83 without merging with 74.

Next, an installation method and a removal method of the water stop device will be described based on the configuration of the water stop device 1 of the present embodiment described above.
First, the installation method will be described. The method of installing the water stop device of the present embodiment includes a frame installation step, a water stop unit mounting step, and a piping work step. In the frame installation process, the ground or floor surface is dug down, and the main body frame 20 and the inspection frame 30 manufactured in advance at the factory are installed at the site. Next, as a water stop unit mounting step, the water stop unit manufactured in advance at the factory is mounted in the fitting groove 22 of the main body frame 20. Here, the fitting groove 22 has a wide opening 21 and is configured to be narrower toward the bottom 28, and the width of the bottom 28 is substantially the same as the width of the bottom of the water tank 43. This facilitates mounting of the water blocking unit 40 in the fitting groove 22, and does not wobble even if the bottom of the water storage tank 43 is not particularly fixed after mounting. Next, the upper portion of the water blocking unit 40 and the upper surface of the main body frame 20 are connected with bolts 25 or the like. Next, the drainage pump 70 is installed inside the inspection frame 30. Next, as a piping work process, necessary piping is connected to the first drain port 71, the second drain port 73, the third drain port 76, etc. of the water stop unit 40, and the piping is connected to the drain pump 70. The water supply pipe 81 is also connected to the water storage tank 43. Further, the necessary electrical wiring is performed, the operation is confirmed, and the top plate 33 and the inspection port 34 of the inspection frame 30 may be closed. The top plate 33 may be placed at any time after the drainage pump 70 is installed.

Next, the removal method will be described. The method for removing the water stop device of the present embodiment includes a pipe removal step, a water stop unit extraction step, and a lid installation step. In the pipe removal step, the inspection port 34 of the inspection frame 30 and the top plate 33 are removed, and the pipes, electrical wiring, and the like are removed and removed or sealed. The drainage pump 70 is also removed. Next, as a step of pulling out the water stop unit, the bolt 25 or the like connecting the water stop unit 40 and the main body frame 20 is removed, and the water stop unit 40 is pulled up and pulled out by a crane or the like. At this time, since the fitting groove 22 of the main body frame 20 is widely configured as it goes to the opening 21, the water stop unit 40 and the main body frame 20 hardly come into contact with each other when the water stop unit 40 is pulled out, and the main body frame 20 can be easily removed. Can be extracted. Next, the top plate 33 of the inspection frame 30 and the inspection lid 35 are returned to close the inspection frame 30. Next, as a lid installation step, a lid (not shown) is installed in the opening 21 of the main body frame 20 to close the opening 21. At this time, bolts 25 or the like provided on the upper surface of the main body frame 20 can be used to fix the lid.

As described above, according to the water stop device 1 of the present embodiment, by providing the inspection frame 30 in the concrete frame 10, the work can be facilitated in installation, maintenance, and the like. Further, since the drainage pump 70 pumps up the drainage, there is no problem in drainage even if the water storage tank 43 of the water stop unit 40 is deepened. Further, since the third drainage port 76 and the power failure guarantee unit 78 are provided, drainage can be performed even in the event of a power failure even though the drainage pump 70 is provided. Further, since the packing 60 has a hat-shaped cross section and the bottom portion thereof is inserted into the packing fastening 62, the packing 60 can be easily attached. Further, since the main body frame 20 has a divided structure, a large machine is not required for transportation and installation work. Further, since the fitting groove 22 of the main body frame 20 has a wide opening 21 and is configured to be narrower toward the bottom, the contact between the water blocking unit 40 and the fitting groove 22 is made when installing and removing the water blocking unit 40. Can be minimized. Further, in order to obtain most of the load-bearing performance of the concrete frame 10, it is possible to minimize the reinforcement of the pillars 45 and the like of the water blocking unit 40, thereby reducing the manufacturing cost and improving the load-bearing performance. Can be made to.

Further, according to the installation method of the water stop device 1 of the present embodiment, the concrete frame 10 and the water stop unit 40 manufactured in advance at the factory may be installed at the site, and the construction period can be shortened. Further, according to the method of removing the water stop device 1 of the present embodiment, since the concrete frame 10 is left as it is, the construction period can be shortened and the water stop device 1 can be easily installed again.

The above-mentioned installation method and removal method of the water stop device 1 and the water stop device 1 are examples of the present invention, and the configuration thereof can be appropriately changed as long as the gist of the invention is not deviated.

1. Water stop device,
10 ... Concrete frame,
20 ... body frame, 21 ... opening, 22 ... fitting groove, 23 ... first through hole, 24 ... connection hole, 25 ... bolt, 26 ... center frame, 27a, 27b ... end Frame, 28 ... Bottom (fitting groove)
30 ... Inspection frame, 31 ... Lower frame, 32 ... Second through hole, 33 ... Top plate, 34 ... Inspection port, 35 ... Inspection lid,
40 ... Water stop unit, 41 ... Inflow tank, 42 ... Groove lid (grating), 43 ... Water storage tank, 44 ... Communication port, 45 ... Pillar,
50 ... Water stop plate, 51 ... Water stop plate, 52 ... Guide part,
60 ... packing, 61 ... bottom (packing), 62 ... packing fastening, 63 ... side,
70 ... Drainage pump, 71 ... 1st drainage port, 72 ... 1st drainage pipe, 73 ... 2nd drainage port, 74 ... 2nd drainage pipe, 75 ... Drainage stop mechanism (drainage stop valve), 76 ... 3rd drainage port, 77 ... 3rd drainage pipe, 78 ... Power failure guarantee part, 79 ... Secondary side piping, 80 ... Check valve, 81 ... Water supply pipe, 82 ... Water supply valve, 83 ... Rainwater channel, 84 ... Drainage tank,

Claims (3)

A water stop device that is buried in the ground or floor and gains buoyancy by the water flowing into the device, and the water stop plate rises to block the water.
The water stop device includes a water stop unit, a drainage pump, and a power failure guarantee unit.
The water stop unit
An inflow tank that is buried in the ground or floor and into which water flows in,
The first drainage port provided at the bottom of the inflow tank and
A water tank that is buried in the ground or floor adjacent to the inflow tank and is deeper than the inflow tank.
A communication port that communicates the inflow tank and the water storage tank,
A second drainage port provided at the bottom of the water tank and
A third drainage port provided in the water storage tank at a water level at which the water stop plate does not rise and at a height at which drainage can be performed in the rainwater channel.
A water stop plate that obtains buoyancy by the water accumulated in the water tank when water that is housed in the water tank and exceeds the drainage amount of the first drain port and the second drain port flows in.
A packing for maintaining watertightness between the water storage tank and the water stop plate is provided.
The drainage pump pumps up water drained from at least the second drainage port of the first drainage port and the second drainage port to the rainwater channel.
The power failure guarantee unit is a water stop device that stops drainage from the third drainage port during power transmission and does not interfere with drainage from the third drainage port during a power failure. The first aspect of claim 1 is provided with a water supply pipe for arbitrarily inflowing water into the inflow tank or the water storage tank, and a drainage stop mechanism for temporarily stopping the drainage of the first drainage port and the second drainage port. The water stop device described. The packing has a cross-section hat shape in which a straight portion of the D-shaped cross section is extended as a bottom portion, and the bottom portion is configured to be harder than other portions, and a pair of metal fittings having an L-shaped cross section for fixing the packing are provided. Claim 1 or 2 is provided as a packing stopper upside down so as to face the side surface of the water storage tank, and the bottom portion is inserted and fixed between the packing stopper and the side surface of the water storage tank. The water stop device described in.

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