JP2014066084A - Filtering water intake device for water channel side part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To filter and take water in with efficiency by hardly catching dirt in filter holes with the power of water flowing in an intake water channel.SOLUTION: A water intake channel 5 is provided at a side part 3 of a water channel 2. An upstream-side inflow opening part 6 and a downstream-side outflow opening part 7 of the water intake channel 5 are linked to the water channel 2, respectively. A dam board 11 which dams up the water of the water channel 2 is provided between the inflow opening part 6 and the outflow opening part 7 of the water channel 2. The dammed-up water flows in the water intake channel 5 from the inflow opening part 6 and part of the water is taken in and then flows out of the outflow opening part 7 to the water channel 2. A water intake board 13 provided with filter holes 12 is arranged in the water intake channel 5 so that its upper surface 16 is held in a horizontal state and also inclined with a constant gradient to be lower from the upstream side toward the downstream side, and water having been filtered through the filter holes 12 is taken in at a water intake space 15. While the water is taken in at the water intake space 15, water flows on the water intake board 13 so that the upper surface 16 thereof is not exposed.

Description

  The present invention relates to a filtration water intake device in a water channel side portion that can efficiently take water while preventing clogging.

The present inventor provided a filtration water collecting device having a clogging eliminating function in Patent Document 1.
As shown in FIGS. 19 to 20, one embodiment of the filtration water collecting apparatus a includes a perforated bottom surface portion d in which a plurality of filter holes c are formed through a portion of a required length of the water channel b. The water collecting channel e, the bottom portion d of the perforated hole as a partition, a water collecting space f is provided below the water collecting channel e, a water intake channel g is connected to the water collecting space f, and In the water collection space f, there was a configuration in which a discharge pipe j having a number of nozzle openings h for discharging water toward the filter hole c was disposed.

  In addition, as shown in FIGS. 21 to 22, the other embodiment of the filtration water collecting device a includes a perforated bottom surface portion d in which a required length portion of the water channel b is formed through a large number of filter holes c. A provided catchment channel e, with the perforated bottom surface d as a partition, a catchment space f is provided below the catchment channel e, and a catchment channel g is connected to the catchment space f; The upstream open end k of the water collection space f is communicated with the water channel b on the inflow side of the water collection channel e, the supply of water to the water collection channel e is interrupted, and water can flow into the water collection space f On the other hand, it has a configuration in which an opening / closing device m that cuts off the supply of water to the water collection space f and enables water to flow into the water collection channel e is provided.

  When the filtered water collecting device a having such a configuration is used, water (river water, etc.) flowing through the water channel b is filtered through the filter hole c of the water collecting channel e and introduced into the water collecting space f, and then Then, the water is fed to a predetermined place through the intake channel g.

  In such an apparatus, when the filter hole c is clogged, the problem is solved as follows. That is, when the filtration water collecting device a includes the outlet pipe j, water (filtered river water or the like) is supplied to the outlet pipe j and is supplied to the filter hole c from the nozzle port h of the outlet pipe j. The filter hole c was clogged by the jet flow. Further, when the filtration water collecting device a includes the opening / closing device m, the opening / closing device m is operated to shut off the supply of water to the water collecting channel e and to flow water into the water collecting space f. The water flowing into the water collecting space f is blown up into the water collecting channel e through the filter hole c, thereby eliminating the clogging of the filter hole c.

  The present inventor examined the cause of the clogging of the filter hole c in the conventional filtration water collecting device a, and as a result, the amount of water per unit time flowing through the water channel b fluctuated to change the amount in the water collection channel e. It has been found that when the water level falls below the upper surface of the bottom surface portion d of the perforated hole, dust contained in the river water is likely to be clogged in the filter hole c.

  When the filter hole c is clogged due to such a cause, in the filtration water collecting apparatus a having the blow-out pipe j, for example, as shown in FIG. Water was jetted toward the hole c, and the clogging of the filter hole c was eliminated by the jet flow. However, even if the clogging is eliminated at the portion that receives the jet action from the nozzle port h, Clogging is difficult to be eliminated in the unaffected portion, and therefore, clogging cannot be effectively eliminated over the entire bottom surface portion d of the hole. On the other hand, when using the filtered water collecting device a having the opening / closing device m, as shown in FIG. 22, by operating the opening / closing device m, the water flowing into the water collecting space f is collected through the filter hole c. Although it can be blown up into the water channel e, there is an advantage that clogging can be eliminated over the entire bottom surface portion d of the hole. It was.

  Further, the clogging eliminating means provided with the above-mentioned blow-out pipe j and the clogging eliminating means provided with the opening / closing device m have a problem of requiring a special device and increasing the construction cost by complicating the equipment. In addition, frequent maintenance is required, which increases the maintenance cost.

Japanese Patent Laid-Open No. 8-24834

  The present invention has been developed in view of such conventional problems, and it is possible to prevent the dust from being easily caught in the filter hole by the momentum of the water flowing through the intake channel, and to provide a filtered intake device that can efficiently perform filtered intake. Providing is an issue.

In order to solve the above problems, the present invention employs the following means.
That is, in the filtration water intake device at the side of the water channel according to the present invention, the water intake channel is provided at the side of the water channel, and water raised by the dam plate provided in the water channel flows into the inflow opening of the water intake channel. A part of the water is taken out and then flows out from the outflow opening of the intake passage. And in this intake channel, the intake plate in which the filter hole is provided is arranged so that the upper surface thereof is in a horizontal state or inclined at a constant gradient so as to become lower from the upstream side toward the downstream side, A water intake space for taking in water filtered through the filter hole is provided below the water intake plate, and the water intake plate is placed on the water intake plate while taking water in the water intake space. The amount of dam lifting by the dam plate is set so that the water flows so that the upper surface of the dam is not exposed.

  Moreover, the more specific aspect of the filtration water intake apparatus in the water channel side part which concerns on this invention is provided with a water intake channel in the side part of a water channel, and the inflow opening part and the outflow opening part of this water intake channel are said water channel, respectively. And a dam that communicates with the upstream portion and the downstream portion when viewed in the extending direction, and dams up the water of the water channel between the inflow opening and the outflow opening of the water channel. By providing the plate, the weired water flows into the intake channel from the inflow opening, a part of the water is taken in, and then flows out from the outflow opening to the water channel. And, in the intake channel, an intake plate provided with a filter hole is disposed so that the upper surface thereof is in a horizontal state or inclined with a constant gradient so as to become lower from the upstream side toward the downstream side, A water intake space for taking in water filtered through the filter hole is provided below the water intake plate, and the water intake plate is placed on the water intake plate while taking water in the water intake space. The amount of dam lifting by the dam plate is set so that the water flows so that the upper surface of the dam is not exposed.

  In the filtration water intake device in each of the water channel side portions, the lower end of the inflow opening is preferably positioned above the water channel bottom surface of the water channel.

  In the filtration water intake device in the water channel side portion configured so that the outflow opening communicates with the water channel, the lower end of the inflow opening is positioned above the water channel bottom surface of the water channel, and the lower end of the outflow opening is It is preferable to substantially match the channel bottom of the channel.

  In the filtration water intake device in the water channel side portion, it is preferable that the inflow opening end portion can be shielded by a shielding plate that prevents inflow of water into the inflow opening end portion.

  In the filtration water intake device at the side of the water channel that is configured so that the outflow port communicates with the water channel, the inflow port and the outflow port can be shielded by a shielding plate that prevents water from flowing into them. It is good.

  In the filtration water intake device in each of the water channel side portions, it is preferable that the filter hole is a circular hole having a diameter of 1 mm, and the upper end periphery of the filter hole is formed in an arcuate periphery protruding upward.

  In the filtered water intake method at the side of the water channel according to the present invention, the upper surface of the intake plate is not exposed on the intake plate while the filtered water is taken through the filter hole in the intake space. In this way, the amount of lifting by the dam plate is set so that the water flows.

(1) The filtration water intake device at the side of the water channel according to the present invention is provided with a water intake channel for performing filtered water intake on the side of the water channel, and water taken up by a dam plate provided in the water channel is the water intake channel. A configuration is adopted in which a part of the water flows into the inflow opening and a part of the water is taken in and then flows out from the outflow opening of the intake channel.
Therefore, according to the present invention, the water level on the upstream side of the weir plate can be raised and the weired water can be caused to flow into the intake channel from the inflow opening, and from the upstream side in the intake channel Filtering water can be taken while reliably generating a flow of water downstream.
And on the premise that the flow of water in the intake channel can be regulated in this way, the present invention is such that the intake plate having the filter hole is in a horizontal state or is lowered from the upstream side to the downstream side. It is arranged so as to incline at a gradient, and water flows on the intake plate so that the upper surface of the intake plate is not exposed during intake of water at the intake space provided below the intake plate. The amount of lifting by the dam plate is set so as to be in a state.
Therefore, according to the present invention, the dust contained in the flowing water is caught as much as possible in the filter hole provided in the intake plate by the momentum of the flowing water flowing down the upper surface of the intake plate toward the downstream side. It can be prevented and flowed downstream. Moreover, even if dust is caught in the filter hole, the dust can be lifted by the force of running water and easily removed from the filter hole.
Therefore, according to the present invention, there is an advantage that efficient filtration water can be stably taken. Further, since a special clogging eliminating device such as a blow-out pipe and an opening / closing device as in Patent Documents 1 and 2 is not required, the construction cost can be reduced and the construction period can be shortened. Further, there is no fear that the electric system as in the prior art will break down. In addition, when the water level on the upper surface of the intake plate is relatively low, since the momentum of running water is weak, the filter hole is somewhat clogged, so to clean the intake surface as necessary However, frequent maintenance as in Patent Documents 1 and 2 is not necessary. For this reason, the maintenance cost can be reduced.

(2) It is preferable that the filter hole is formed as a circular hole having a diameter of 1 mm and the upper end periphery is formed as an arcuate surface projecting upward so that dust is not easily caught in the filter hole.

(3) When the lower end of the inflow opening is positioned above the water channel bottom of the water channel, gravel that has flowed through the water channel can be prevented from flowing into the intake channel through the inflow opening. Thus, the intake plate can be prevented from being damaged.
In this case, in particular, when the lower end of the outflow opening is substantially matched with the bottom of the water channel, it is preferable because the discharge of dust through the outflow opening can be made smoother.

(4) In particular, when the inflow opening can be shielded by a shielding plate, when water is not taken in the intake channel, the inflow opening is shielded by the shielding plate so that mud or the like enters the intake channel. Can be prevented.

(5) When using the filtration water intake method in the side of the water channel according to the present invention, the amount of water flowing into the water intake channel through the inflow opening is adjusted so that the upper surface of the water intake plate is not exposed during water intake. It can be easily adjusted by setting the weiring amount by the plate as required. This makes it difficult for dust to get caught in the filter hole, and allows efficient filtration water intake.

It is a perspective view which shows the filtration water intake apparatus in the water channel side part which concerns on this invention. FIG. It is the longitudinal cross-sectional view. It is sectional drawing explaining the water intake effect | action in a water intake board. It is a cross-sectional view which shows the filtration water intake apparatus in a water channel side in an inflow opening part side. It is a cross-sectional view which shows the filtration water intake apparatus in a water channel side part in the outflow opening part side. It is the perspective view and sectional drawing which show the structure of a water intake board. It is the perspective view and sectional drawing explaining the operation | work which attaches / detaches a weir board in a water channel. It is a perspective view which shows the structure of the water storage tank provided adjacent to the end surface part of the downstream of an intake channel. It is a perspective view explaining the operation | work which shields an inflow opening part with a shielding board. It is a perspective view explaining the operation | work which shields an outflow opening part with a shielding board. It is a perspective view which shows the case where the upper space part of an intake channel is covered with the gate-type side groove block. It is a top view which shows the case where the filtration water intake apparatus is provided in the one side part of the river. It is the fragmentary perspective view. It is sectional drawing which shows the other arrangement | positioning state of a water intake board. It is sectional drawing which shows the case where a pressing board is piled up on the side edge part of a water intake board, and this side edge part is screw-fixed to a support piece. FIG. It is sectional drawing which shows the perspective view and the structure of a filter hole. It is a partial notch perspective view explaining the structure of the conventional filtration water collecting apparatus. It is a longitudinal cross-sectional view explaining the clogging elimination action of the filter hole in the filtration water collecting apparatus. It is a partially cutaway perspective view explaining the other aspect of the conventional filtration water collecting apparatus. It is a longitudinal cross-sectional view explaining the clogging elimination effect | action in the filtration water collecting apparatus.

  1 to 4, a filtered water intake device (hereinafter referred to as a filtered water intake device) 1 in a water channel side portion according to the present invention is provided with a water intake channel 5 on one side 3 of a water channel 2. An inflow opening 6 on the upstream side and an outflow opening 7 on the downstream side of the intake channel 5 are respectively connected to the upstream channel 9 and the downstream site 10 in the extension direction of the water channel 2. And by providing a weir plate 11 that dams up the water flowing through the water channel 2 between the inflow opening 6 and the outflow port 7 of the water channel 2, the weired water is As shown by an arrow in FIG. 2, it flows into the intake channel 5 from the inflow opening end portion 6 and a part of the water is taken in, and thereafter, from the outflow opening portion 7 to the intake channel 5, and shown by an arrow in FIG. 2. It is made to flow out like this. In the intake channel 5, the intake plate 13 provided with the filter hole 12 has a constant gradient (the water channel of the water channel 2) so that the upper surface 16 thereof is in a horizontal state or becomes lower from the upstream side toward the downstream side. An intake space 15 for taking in water filtered through the filter hole 12 is provided on the lower side of the intake plate 13. ing. Further, while taking water in the water intake space 15, as shown in FIG. 4, the water flows on the water intake plate 13 so that the upper surface 16 of the water intake plate 13 is not exposed. A lifting amount by the dam plate 11 is set. Hereinafter, this will be described more specifically.

  In this embodiment, as shown in FIGS. 1 and 2, the water channel 2 is configured as a side groove for agricultural water, the water channel width is set to about 40 cm, for example, and river water flows. The water intake channel 5 is provided on one side 3 of the water channel 2 so as to be adjacent to the side wall 17 over the required length of one side wall 17 of the water channel 2.

  As shown in FIGS. 1 and 2, the intake channel 5 is provided with intake channel side walls 19 standing at a required distance from the side wall 17, and both ends of the intake channel side wall 19 in the extending direction and the A space between the side wall portion 17 is blocked by an upstream end surface portion 22 and a downstream end surface portion 23.

  The intake channel 5 is divided into two vertically by the intake plate 13 as shown in FIGS. In this embodiment, the water intake plate 13 is provided so as to cover the upper end open portion 18a of the U-shaped frame 18 with the upper end open as shown in FIGS. The U-shaped frame 18 is formed on the both side edges 28 and 28 of the bottom plate 24 having a rectangular plate shape extending in the length direction of the intake channel bottom surface 25 of the intake channel 5. The leg pieces 26 and 27 are erected in contact with the 86 and 86, and the left and right support pieces 35 and 35 are bent at the upper ends of the left and right leg pieces 26 and 27.

  In this embodiment, the intake plate 13 has a rectangular plate shape with a width of about 50 cm, a length of about 270 cm, and a thickness of 1 mm, and a large number of 1 mm diameter circular filter holes 12 are provided therethrough. For example, it is comprised with the punching metal board made from stainless steel. As shown in FIG. 7A, the water intake plate 13 has both side edge portions 31, 32 in the longitudinal direction supported from below by the left and right support pieces 35, 35, and the side edge portions 31, 32 are It is fixed to the support pieces 35, 35 by screw fixing or the like. In this embodiment, the intake plate 13 fixed in this manner is inclined in accordance with the channel gradient of the channel 2. 1-2, the upstream end 34 of the intake plate 13 is brought into contact with the inner surface of the upstream end surface 22 and the downstream end 38 of the intake plate 13 is It is in contact with the inner surface of the downstream end surface portion 23. In the present embodiment, the upper peripheral edge 36 of the filter hole 12 is formed in an arcuate peripheral edge protruding upward as shown in FIG. 7B.

  Further, as shown in FIGS. 1, 3, and 5, the inflow opening 6 that communicates with the upstream portion of the intake channel 5 is formed in the one side wall portion 17 of the water channel 2. Is cut out from the upper end to a required depth, for example, in a rectangular shape, and the outflow opening 7 communicating with the downstream portion of the intake channel 5 is connected to the side wall portion 17 from the upper end. For example, the depth is cut out in a rectangular shape.

  In this embodiment, the length of the intake passage 5 is set to about 270 cm, and the length of the inflow opening 6 and the outflow opening 7 in the extending direction of the intake passage 5 is set to about 50 cm. Has been. Further, the lower end 37 of the inflow opening 6 and the lower end 39 of the outflow opening 7 are both located about 15 cm above the water channel bottom surface 40 of the water channel 2, as shown in FIGS. The lower ends 37 and 39 are substantially flush with the upper surface 16 of the intake plate 13. The lower end 37 of the inflow opening 6 is positioned above the bottom surface 40 of the water channel so that when earth and sand or gravel flows into the water channel 2, they flow into the intake channel 5. This is to prevent it.

  In the present embodiment, the width of the water channel 2 is increased on the side of the outflow opening 7 in order to make it easier for water to flow from the outflow opening 7 to the water channel 2. 1-2, the code | symbol 44 has shown the part to which the width | variety was expanded.

  In addition, as shown in FIGS. 1 and 2 and 8, a dam plate 11 that dams up the water in the water channel 2 can be attached to and detached from the water channel 2 between the inflow opening 6 and the outflow opening 7. It is said that. The dam plate 11 has a rectangular plate shape made of, for example, a stainless steel plate or an iron plate, and is made of, for example, a stainless steel plate provided in the vertical direction on the inner surfaces 42, 43 of the opposite side wall portions 17, 41 of the water channel 2. The guide grooves 45 and 46 are used by being dropped from their upper ends. In this embodiment, as shown in FIG. 8B, both side portions 49, 50 of the lower edge 47 of the barrier plate 11 are supported from below by the lower ends 51, 52 of the left and right guide grooves 45, 46. In the water channel 2, an open water channel portion 53 is formed below the weir plate 11. The vertical width of the open water channel portion 53 is set to about 40 mm, for example.

  The formation of the open water channel portion 53 in this way prevents sediment and gravel and the like from accumulating on the upstream side of the dam plate 11 by flowing the earth and sand and gravel flowing in the water channel 2 to the downstream side. Because.

  In the present embodiment, as shown in FIGS. 1, 2, 4, and 9, a water storage tank 55 is provided adjacent to the downstream end surface portion 23 of the intake channel 5. The bottom surface 56 of the water storage tank 55 is set to about 1 m downward from the upper surface 16 of the water intake plate 13, for example. A communication opening 57 is provided on the downstream side end face portion 23 below the intake plate 13, and the water in the intake space 15 flows into the water storage tank 55 through the communication opening 57. It is made like that. As shown in FIG. 4, the lower end 58 of the communication opening 57 is flush with the bottom surface 64 of the intake space 15. In addition, a submersible pump 59 is housed in the water storage tank 55, and a water supply pipe 60 connected to the discharge side of the water storage tank 55 extends to a predetermined location and is connected to, for example, a supply port of a snow melting nozzle.

  In this embodiment, as shown in FIGS. 10 to 11, the inflow opening 6 and the outflow opening 7 are, for example, a guide groove 61 made of stainless steel provided in the vertical direction on the inner surface 42 of the side wall 17. It can be shielded by shield plates 63 and 65 dropped from the upper ends of 61, 62 and 62. The shielding plates 63 and 65 are made of, for example, a stainless plate or an iron plate. When water intake is not performed in the water intake passage 5, the inflow opening 6 and the outflow opening 7 are connected to the shielding plate 63 in order to prevent mud and the like from flowing into the water intake passage 5 and the water storage tank 55. , 65.

  FIG. 10B shows a state in which the inflow opening 6 is closed with a shielding plate 63, and FIG. 11B shows a state in which the outflow opening 7 is closed with a shielding plate 65. Note that the communication opening 57 may also be covered with a cover plate (not shown).

  When the filtration water intake apparatus 1 is configured in this way, in order to prevent the earth and sand surrounding the intake path 5 from collapsing, for example, as shown in FIG. 12, the upper space portion of the intake path 5 is a gate-type side groove block. 66 may be covered. In the case of such a configuration, the gate-type side groove block 66 has left and right side wall plates erected on the upper end surface 67 of the one side wall portion 17 of the water channel 2 and the upper end surface 69 of the intake channel side wall portion 19. Both end portions between the upper portions of the portions 70 and 71 are integrally connected by connecting beams 73 and 73, and an upper end opening between the connecting beams 73 and 73 is closed by a groove cover 76 as a grating, for example. Yes. The upstream side open end 77 and the downstream side open end 79 of the portal side groove block 66 viewed in the extending direction of the water channel 2 are covered with end face plates 80 and 81. In this embodiment, the downstream open end 79 has a configuration in which the lower part of the diagonal line is covered with the end face plate 81, and the upper part of the diagonal line is water on the upper surface 16 of the water intake plate 13. The observation window 82 is used for observing the flow state and the like.

  Next, the water intake effect | action by the filtration water intake apparatus 1 which has this structure is demonstrated. First, as shown in FIGS. 1, 3, and 8B, the barrier plate 11 is dropped into the left and right guide grooves 45 and 46 from the upper ends thereof. In this state, as shown in FIG. 3, the water level on the upstream side of the dam plate 11 can be raised, and as a result, as shown by an arrow in FIG. 6 can be made to flow into the intake channel 5, and the inflow water can be regulated so as to flow down from the upstream side toward the downstream side of the intake channel 5.

  The water flowing into the intake channel 5 is filtered through the filter hole 12 of the intake channel 5 and introduced into the intake space 15 as shown in FIG. In this way, while water is taken in the water intake space 15, water flows on the water intake plate 13 so that the upper surface 16 of the water intake plate 13 is not exposed. In this embodiment, the amount of water that is twice the amount of water intake is allowed to flow from the inflow opening 6, and the water depth flowing through the upper surface 16 of the water intake plate 13 is changed while the water intake space 15 is taking water. The degree of weiring is set to be about 3 to 10 cm. When the water level on the intake plate 13 is low, the momentum of the water flow is weak, so that some dust may be caught in the filter hole 12, so that a moderate water flow momentum can be obtained. The water level is adjusted by adjusting the amount of lifting by the weir plate 11 as required.

  If the water flows so that the upper surface 16 of the water intake plate 13 is not exposed, the dust contained in the flowing water floats without being caught in the filter hole 12 by the momentum of the flowing water flowing through the upper surface 16. Easy to flow. Even if dust is caught in the filter hole 12, the dust is lifted by the force of running water, easily detached from the filter hole 12, and flows away in a floating state. As a result, clogging of the filter hole 12 (FIG. 4B) can be prevented as much as possible.

  In this embodiment, the filter hole 12 is a circular hole having a diameter of 1 mm, and as shown in FIG. Dust is less likely to get caught in the filter hole 12. In this embodiment, since the water depth of about 3 to 10 cm is present on the intake plate 13, the clogging of the filter hole 12 is more reliably prevented.

  In this way, water is taken in the water intake space 15. For example, 800 to 1000 liters per minute can be taken, and the taken water flows into the water storage tank 55 through the communication opening 57 as indicated by an arrow in FIG. The stored water in the water storage tank 55 is supplied to a predetermined place through the water supply pipe 60 by the operation of the submersible pump 59, and is used, for example, for melting snow. The operation of the submersible pump 59 is normally performed such that a state where there is a water depth on the intake plate 13 is maintained.

  The present invention is by no means limited to those shown in the above-described embodiments, and it goes without saying that various design changes can be made within the scope of the claims. One example is as follows.

(1) FIGS. 13 to 14 show the filtration water intake device 1 in the case where the water channel 2 is a river having a water channel width of about 6 to 8 m, for example, as shown in FIG. An intake channel 5 (for example, having a length of about 8 m) configured in the same manner as described above is provided on one side 3 of the river 2a. The inflow opening 6 on the upstream side and the outflow opening 7 on the downstream side of the intake channel 5 communicate with the upstream portion 9 and the downstream portion 10 when viewed in the extending direction of the water channel (river) 2. Has been. Further, a weir plate 11 for weiring the water in the water channel (river) 2 is provided between the inflow opening 6 and the outflow opening 7 in the water channel (river) 2. The water thus made flows into the inflow opening 6 and out of the outflow opening 7. In the same manner as in the above embodiment, water is taken in the water intake channel 5 during this time. For example, 3000 to 10,000 liters of water can be taken per minute.

  In the present embodiment, since the water channel 2 is constituted by a wide river of about 6 to 8 m, a long strip portion 83 made of concrete is provided so as to cross the water channel 2. Then, a notch 85 having an open upper end is provided in a part of the strip 83 in the length direction, and the notch 85 is appropriately covered with the dam plate 11 from the upstream side of the notch 85 so as to be downstream through the notch 85. The water on the upstream side of the dam plate 11 can be dammed up while appropriately flowing river water to the side. For example, weir to a depth of about 20 cm. In this way, a configuration in which the long strip-shaped portion 83 is provided in the water channel 2 and the cutout portion 85 is provided in a part thereof, and the dam plate 11 is attached to the cutout portion 85, the water in the water channel 2 is drained by the dam plate 11. This is one mode when weiring. In FIG. 13, the strip 83 is provided so as to cross the river 2a obliquely so as to go upstream from the one side 3a toward the other side 3b.

  When not taking water, the weir plate 11 is removed. By this removal, the sludge accumulated on the upstream side of the dam plate 11 can be caused to flow down through the notch 85. For the purpose of more effectively flowing down the throat or the like, a plurality of barrier plates 11 may be provided in the belt-like portion 83. For example, a plurality of the notch portions 85 are provided at a required interval (for example, an interval of 4 m) in the length direction of the belt-like portion 83, and each of the notch portions 85 is configured to be covered with the barrier plate 11. In particular, in the present embodiment, since the strip 83 is provided so as to cross the water channel 2 diagonally, as shown by a one-dot chain line in FIG. Even when the dust 94 is collected in the portion 84 near the side 3b, the upstream side surface portion 88 is shown in FIG. 13 by the momentum of flowing water when the dam plate 11 is removed. And flows toward the notch 85 and is smoothly discharged from the notch 85. Further, when water intake is not performed in the water intake passage 5, the inflow opening 6 and the outflow opening 7 are closed with a shielding plate in order to prevent dust from flowing into the intake passage 5, and the shielding plate Both side edge portions may be bolted to the side edge portions of the inflow opening 6 and the outflow opening 7.

(2) When the water channel 2 is constituted by a river, a relatively large stone or gravel flowing on the bottom of the river may flow into the inflow opening 6 and damage the intake plate 13. In order to prevent this, for example, as shown in FIG. 14, it is beneficial to position the lower end 37 of the inflow opening 6 about 5 to 10 cm above the water channel bottom surface (river bottom surface) 40.

(3) The lower end 37 of the inflow opening 6 may be set flush with the water channel bottom surface 40 if the gravel or the like is difficult to flow into the water channel 2. Further, in order to allow the dust flowing down the upper surface 16 of the intake plate 13 of the intake channel 5 to smoothly flow out into the river, the lower end 39 of the outflow opening 7 is substantially aligned with the bottom surface 40 of the channel (substantially flush) Is preferred).

(4) The weir plate 11 in the present invention may block water flow to the downstream side of the water channel 2.

(5) The intake channel 5 provided in the side portion 3 of the water channel 2 is not necessarily along the side walls 17 and 41 of the water channel 2. Further, it may be provided at a distance from the side wall portions 17 and 41. The intake channel 5 may be provided on both sides of the water channel 2.

(6) The filter hole 12 may be a long hole or the like in addition to the circular hole as long as dust is not easily caught.

(7) A water pipe may be connected to the water storage tank 55, and when necessary, a valve (not shown) may be opened to feed water to the water pipe by a water drop.

(8) When the water level in the intake channel 5 is high, the water intake through the filter hole 12 is good, so the flow velocity at the upper surface 16 of the intake plate 13 is increased to more reliably clog the filter hole 12. In order to prevent this, the gradient of the intake plate 13 may be increased.

(9) As shown in FIG. 15, the intake plate 13 is disposed on the left and right support pieces 89 and 90 formed to protrude from the left and right water channel side surfaces 86 and 87 of the intake channel 5. The left and right side edge portions 31 and 32 of the plate 13 may be supported, and the left and right side edge portions 31 and 32 may be fixed to the left and right support pieces 89 and 90 by screws or the like.

(10) FIGS. 16 to 17 and FIG. 18 show the top surfaces 96 of the side edge portions 31 and 32 when the side edge portions 31 and 32 of the water intake plate 13 are fixed to the left and right support pieces 35 and 35 with screws 95. 97, the presser plates 99, 99 are overlapped with each other, and screws 95 are screwed and tightened from the upper surface 100 side of the presser plate 99, whereby the presser plate 99, the side edge portion 31 (32) and the support piece 35 are secured. Is shown in an integrated state. The holding plate 99 can be set to a required thickness and width as long as dust contained in the water flowing on the upper surface 16 of the intake plate 13 is not caught by the filter hole 12. For example, it can be configured as a press plate having a thickness of 1 mm and a width of 50 mm. In this way, the presser plate 99 is overlaid and screwed to fix the side edge portions 31 and 32 to the support piece 35 in a more stable state. The side edge portion 31 and the support piece 35 It is possible to reliably prevent dust from flowing into the water intake space 15 through the end 101 of the contact portion. FIG. 15 shows a case where the pressing plate 99 is used.

(11) The taken water can be used for various purposes such as water for agricultural use and working water for hydroelectric power generation using rivers in addition to the above-mentioned snow melting.

(12) The filtration water intake apparatus 1 according to the present invention may be configured so that water flows out from the outflow opening 7 to another water channel without the outflow opening 7 communicating with the water channel 2.

DESCRIPTION OF SYMBOLS 1 Filtration intake device 2 Water channel 3 Side part 5 Intake channel 6 Inflow opening part 7 Outflow opening part 9 Upstream part 10 Downstream part 11 Dam plate 12 Filter hole 13 Intake plate 15 Intake space 16 Upper surface 17 Side wall part 19 Intake channel side wall Part 22 End surface part 23 End surface part 25 Water channel bottom surface 36 Upper edge periphery 40 Water channel bottom surface 55 Water storage tank 63 Shielding plate 65 Shielding plate

Claims (8)

  A water intake channel is provided on the side of the water channel, and water raised by a dam plate provided in the water channel flows into the inflow opening of the water intake channel, and a part of the water is taken in, and then the outflow of the water intake channel. The intake channel is provided with a filter hole in the intake channel, and the upper surface of the intake plate is in a horizontal state or at a constant gradient so that the upper surface is lowered from the upstream side to the downstream side. An intake space is provided on the lower side of the intake plate to take in water filtered through the filter hole, and the intake water is taken while being taken in the intake space. The filtration water intake device at the side of the water channel is characterized in that a weir amount by the dam plate is set on the plate so that water flows so that the upper surface of the intake plate is not exposed. An intake channel is provided on the side of the water channel, and an inflow opening and an outflow port of the intake channel are respectively communicated with the upstream channel and the downstream channel of the water channel in the extension direction. The dam plate is provided between the inflow opening and the outflow opening of the water channel so as to dam the water in the water channel, so that the water that has been dammed up from the inflow opening to the intake water. A part of the water flowing into the channel is taken in and then flows out from the outflow opening into the water channel;
In the intake passage, a water intake plate provided with a filter hole is disposed so that the upper surface thereof is in a horizontal state or is inclined at a constant gradient so as to be lowered from the upstream side toward the downstream side, A water intake space for taking in water filtered through the filter hole is provided below the water intake plate, and while taking water in the water intake space, the water intake plate is placed on the water intake plate. The filtration water intake device at the side of the water channel, wherein a weir amount by the dam plate is set so that water flows so that the upper surface is not exposed.   The lower end of the said inflow opening part is located above the water channel bottom face of the said water channel, The filtration water intake apparatus in the water channel side part of Claim 1 or 2 characterized by the above-mentioned.   The lower end of the inflow opening is positioned above the water channel bottom of the water channel, and the lower end of the outflow opening is substantially matched with the water channel bottom of the water channel. Filtration water intake device at the side of the waterway.   3. The filtration water intake device in the water channel side portion according to claim 1, wherein the inflow opening portion can be shielded by a shielding plate that prevents inflow of water into the inflow opening portion.   3. The filtration water intake device at the side of a water channel according to claim 2, wherein the inflow opening and the outflow opening can be shielded by a shielding plate that prevents inflow of water into the inflow opening and the outflow opening.   The said filter hole is a circular hole whose diameter is 1 mm, Comprising: The upper-end periphery of this filter hole is formed in the circular arc-shaped periphery which protrudes upwards, The filtration in the water channel side part of Claim 1 or 2 characterized by the above-mentioned. Intake device.   It is the filtration water intake method using the filtration water intake apparatus in the water channel side part of Claim 1 or 2, Comprising: While taking in the water filtered through the said filter hole in the said water intake space, on the said water intake plate Is a method of filtering water intake on the side of a water channel, wherein a weir amount by the weir plate is set so that water flows so that an upper surface of the water intake plate is not exposed.

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