JP6987857B2 - Sluice and drainage method of sluice - Google Patents

Description

The present invention relates to a sluice and a method of draining a sluice.

As a method of draining agricultural land, culvert drainage by burying an underdrain in the ground and using it as a drainage channel is widely used. In addition, a floodgate is known as a facility for adjusting the water level of agricultural land. For example, FIG. 9 of Japanese Patent No. 4745103 (Patent Document 1) discloses an example of a vertical pipe type horizontal sluice.

In the vertical pipe type horizontal sluice shown in FIG. 9, a valve rod having a valve attached to the lower end is arranged in the protective pipe, and the upper end of the valve rod protrudes upward from the upper end of the protective pipe. An outlet pipe is attached to one of the T-shaped pipes arranged at the lower end of the protective pipe, and a mouthpiece pipe (not shown) is attached to the other. From spring to autumn, the valve stem is lowered to bring the valve into contact with the valve seat to stop water. At the time of autumn harvest, the valve rod is raised to open the valve and drain it. Further, it is disclosed that the valve rod is raised to keep the valve open during the winter season.

FIG. 3 of JP-A-2015-196954 (Patent Document 2) discloses an example of a groundwater level adjusting lock. In the groundwater level adjustment lock in FIG. 3, it is described that the inner cylinder is pulled out upward from the drainage port. At this time, the inner cylinder can be easily pulled up by grasping the portion of the first opening at the upper end portion as a handle. The inner cylinder pulled out from the drain port locks the second opening to the locking portion provided on the inner peripheral surface of the outer cylinder. As a result, the inner cylinder pulled out from the drain port can be locked to the outer cylinder while being housed in the outer cylinder. An example is described in which the inner cylinder is removed from the locking portion and the lower end portion is inserted into the drainage port after the flushing is completed.

FIG. 3 of JP-A-2004-65038 (Patent Document 3) discloses an example of a groundwater level adjusting lock. According to the groundwater level adjustment sluice of FIG. 3, the water level adjustment taken out from the water level adjustment port at the time of drainage is formed so that the handle portion at the upper end of the connecting member can be hooked on the hanger provided on the back surface of the lid. The pipe can be stored in the water level control box with the pipe hooked on the hanger. This eliminates the need to remove the water level control pipe from the water level control box and store it separately when draining, so even if the length of the lower pipe etc. differs depending on the installation position of the water level control box, it corresponds to each water level control box. Not only can the water level adjustment pipe be used reliably, but there is no problem with the transportation and storage location of the water level adjustment pipe when draining groundwater.

Japanese Patent No. 4745103 JP-A-2015-196954 Japanese Unexamined Patent Publication No. 2004-65038

However, although the sluice as described in Patent Document 1 describes a configuration in which the valve rod is raised to open the valve during the winter season, the valve rod falls due to the weight of snow, and the water is stopped. There is a risk that it will end up. When the water is stopped from spring to autumn, the valve rod protrudes upward from the protective pipe, so there is a risk of damaging the valve rod by catching your foot. Further, if the valve rod protrudes from the protective pipe, it may interfere with mowing or the like.

The water lock described in Patent Document 2 is provided with a locking portion for locking the second opening to the inner peripheral surface of the outer cylinder, but the inside of the outer cylinder is in a full state at a set groundwater level. Therefore, it is necessary to set the locking part at a position higher than the ridge, or attach packing or the like to take measures to stop water. When the locking portion is set higher than the ridge, the lid is attached further upward, and as a result, the outer cylinder is in the construction position protruding from the ridge. If it jumps out large, it will be an obstacle when mowing, etc., as in the case of the floodgate of Patent Document 1, and if it jumps out small, it will be difficult to notice and cause a trip.

In the sluice described in Patent Document 3, when the lid is opened and closed with the inner cylinder hooked on the hanger formed on the back surface of the lid, the lid becomes heavy, so the handle or force is applied to secure the lid. Relatively large protrusions, holes, etc. that can be grasped by the lid must be formed on the lid. When a handle is formed on the lid, it is difficult to notice because the protrusion is small, and it may cause a trip. When a hole is formed in the lid, dust and the like can easily enter the water level control basin.

In view of the above problems, the present invention provides a sluice and a method for draining the sluice, which can suppress obstacles to walking and running on the ridge and can drain water reliably and smoothly.

In order to solve the above problems, the present invention can be embedded on one side so as not to protrude from the ridge, a protective tube provided with a plug seat inside, and a core portion extending inside the protective tube. , A plug that is joined to the lower end of the core, and that can be expanded and contracted along the extending direction of the core, one end is joined to the plug, and the other end is fixed at the desired position of the core. A water level adjustment part equipped with a stretchable bellows part that can adjust the water level, and a water level adjustment part that is placed inside the core part and can be held in a position where the plug part can be removed from the plug seat by suspending the water level adjustment part in the protective pipe. A water level with a holding tube is provided.

In one embodiment, the water rod according to the present invention has a holding tube longer than the core portion and a length that does not interfere with the protective tube and the lid when the lid of the protective tube is closed, and fixes the core portion. A first hole is provided at the upper end, a core portion is provided with a second hole overlapping the first hole, and a fixing member provides an aligned first hole and a second hole. Includes penetrating to secure the holding tube and core.

In another embodiment, the sluice according to the present invention includes a shaft lock pin as a fixing member.

In still another embodiment, the water rod according to the present invention has a multi-tube structure in which a protective tube includes an inner tube and an outer tube arranged outside the inner tube, and the position of the outer tube is adjusted. Therefore, the length of the protective tube can be adjusted so as not to protrude from the ridge.

In another aspect, the present invention can be embedded so as not to protrude from the ridge, a protective tube provided with a plug seat inside, a core portion extending inside the protective tube, and the lower end of the core portion. It is flexible along the extending direction of the plug part and the core part to be joined to, one end is joined to the plug part, and the other end is fixed to the desired position of the core part so that the water level can be adjusted. A drainage method for a water level with a water level adjusting part having a stretchable bellows part and a holding pipe arranged inside the core part and capable of holding the water level adjusting part at the time of draining, and formed at the upper end of the holding pipe. The position of the first hole made and the second hole formed at the upper end of the core portion are aligned, and a fixing member is arranged in the first hole and the second hole to form the holding pipe and the core portion. By fixing the water level adjusting part inside the protective pipe, the water level adjusting part is suspended from the holding pipe, and the water level adjusting part is held at a position where the plug part is separated from the plug seat to drain the water. To.

According to the present invention, it is possible to provide a sluice and a method for draining a sluice, which can suppress obstacles to walking and running on the ridge and can drain water reliably and smoothly.

It is a schematic diagram which shows the example of the state which installed the sluice which concerns on embodiment of this invention. It is a schematic diagram which shows the component which comprises the water lock which concerns on embodiment of this invention, FIG. 2 (a) is a protection pipe, FIG. 2 (b) and FIG. Is a schematic view showing a holding tube. FIG. 3 (a) is a schematic view showing a configuration when the water lock according to the embodiment of the present invention is in a drained state, FIG. 3 (a) is an example when the adjusted water level is low, and FIG. 3 (b) is an example when the adjusted water level is high. It is a schematic diagram which shows. It is a schematic diagram which shows the relationship between the height at the time of water accumulation and the time of drainage of the water lock which concerns on embodiment of this invention. 5 (a) to 5 (d) are schematic views illustrating the treatment required when the wastewater treatment is performed using the sluice according to the embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The embodiments shown below exemplify devices and methods for embodying the technical idea of the present invention, and the technical idea of the present invention specifies the structure, arrangement, etc. of components to the following. It's not something to do.

FIG. 1 is a schematic view showing an example of a state in which a floodgate 10 according to an embodiment of the present invention is installed. The lock 10 is buried so as not to protrude from the top end 1a of the ridge 1. In the example shown in FIG. 1, an example in which the floodgate 10 is buried in the vicinity of the center of the ridge 1 in the direction perpendicular to the upper surface (top end 1a) of the ridge 1 is described. However, the burial position of the sluice 10 is not limited to the example shown in FIG. 1, and it is needless to say that the burial position is not limited to the position shown in FIG. 1 as long as the function of the sluice 10 can be exhibited.

For example, the lock 10 may be arranged so as to be offset from the slope 1b side of the ridge 1. Further, the ridge 1 means an elongated land portion on which a sluice 10 that rises higher than the field 11 used for cultivation can be installed, and a farm road or the like is also included in the ridge 1.

The water lock 10 according to the embodiment of the present invention includes a protective pipe 101, a water level adjusting unit 105 arranged in the protective pipe 101, and a holding pipe 106 arranged inside the water level adjusting unit 105.

The protective tube 101 is made of a synthetic resin such as vinyl chloride. The protection tube 101 is provided with a T-shaped tube 110. An underdrain water pipe 114 extending into the ground is connected to the T-shaped pipe 110 below the field 11. The underdrain water pipe 114 can include a non-perforated type drainage pipe 114a and a perforated type drainage pipe 114b.

The perforated type drainage pipe 114b can permeate underground from the ground surface, and water that has permeated into the pipe through the hole of the pipe can flow into the sluice 10. Further, the irrigation water replenished from the upper side of the water of the perforated type drainage pipe 114b can be flowed into the sluice 10. The water flowing into the sluice 10 can be filled in the perforated type drainage pipe 114b by the water level adjusting unit 105 described later. As a result, water can be supplied to the field 11 above the drainage pipe 114b. On the other hand, a horizontal pipe 115 is connected to the lower end of the protective pipe 101 via a mass 111, and water is discharged to the outside of the field 11 via the horizontal pipe 115.

As shown in FIG. 2A, the adapter 112 is arranged inside the lower end of the protective tube 101. The adapter 112 is a structure for seating or dismounting the plug portion 104 of the water level adjusting unit 105 shown in FIG. 2B, which will be described later, and opening or closing the water lock 10. A T-shaped tube 110 is joined to the upper part of the adapter 112. A mass 111 is joined to the lower part of the adapter 112.

Inside the adapter 112, a plug seat 113 having a concave shape that matches the outer shape of the plug portion 104 is provided so that the plug portion 104 provided in the water level adjusting unit 105, which will be described later, can be seated. When the plug portion 104 is housed in the plug seat 113, the plug portion 104 is closed in the protective pipe 101 (see FIG. 3A), whereby the underdrain water distribution pipe 114 is directly connected to the horizontal pipe 115. The flowing water is adjusted by the set height of the water level adjusting unit 105, whereby the water level of the field 11 is adjusted.

As shown in FIG. 2A, the protective tube 101 has a multi-tube structure including an inner tube 116 and an outer tube 117 arranged on the outside of the inner tube 116 so as to cover a part of the inner tube 116. ing. The outer tube 117 can slide up and down along the inner tube 116, whereby the length of the protective tube 101 can be adjusted. Specifically, the length of the protective tube 101 is adjusted by fixing the outer tube 117 to the inner tube 116 at a predetermined position by using a screw 118 or the like provided at the end of the outer tube 117. .. Thereby, as shown in FIG. 1, it is possible to adjust the total length of the protective tube 101 so as not to protrude from the ridge 1.

As shown in FIG. 2B, the water level adjusting unit 105 has a length that can be constantly held inside the protective pipe 101, and is an instrument for adjusting the water level on the field 11. be. The water level adjusting portion 105 includes a core portion 102 extending inside the protective tube 101, a plug portion 104 joined to the lower end of the core portion 102, and a bellows portion 103 having one end joined to the plug portion 104. Can be prepared.

As shown in FIGS. 2 (b) and 2 (c), the bellows portion 103 is elastically joined along the extending direction of the core portion 102. The method of joining the bellows portion 103 to the stopper portion 104 may be directly adhered to the stopper portion 104, may be fitted, may be tightened with a fastener such as a band, or may be tightened using a collar. May be good. The inner diameter of the bellows portion 103 is larger than that of the core portion 102, and the material thereof is not limited to rubber or synthetic resin as long as it has water resistance and water resistance.

The other end (upper end) of the bellows portion 103 is fixed to the core portion 102 at a desired height position of the core portion 102 by using a screw 118 or the like, and can be held at a predetermined position.

For example, as shown in FIG. 3 (b), the water level on the field 11 can be adjusted to the maximum water depth of 12 (see FIG. 1) at the time of rice cultivation by extending and fixing the bellows portion 103 upward. When it is desired to lower the water level, as shown in FIG. 3A, the bellows portion 103 is shrunk downward and the bellows portion 103 is fixed to the core portion 102 with a screw 118 or the like on the field 11. The water level can be adjusted as low as the underground irrigation water level 13 (see FIG. 1) at the time of upland farming.

As shown in FIG. 2D, the holding tube 106 has an outer diameter smaller than the inner diameter of the core portion 102 so as to be accommodated inside the tubular core portion 102, and is a rod-shaped or hollow cylinder. It has a similar appearance. The holding tube 106 can be made of a synthetic resin material such as vinyl chloride, which is excellent in water resistance and corrosion resistance, stainless steel, or the like.

The holding tube 106 is longer than the core portion 102 and has a length that does not interfere with the protective tube 101 and the lid 100 when the lid 100 of the protective tube 101 is closed. By being formed longer than the core portion 102, as shown in FIG. 3A, the core portion 102 can be suspended from the holding tube 106 in the protective tube 101. Since the holding tube 106 has a length that does not interfere with the protective tube 101 and the lid 100, the holding tube 106 can be kept housed in the protective tube 101 at all times even when the holding tube 106 is not used. , It is possible to prevent the loss of parts due to the adjustment work of the water lock 10 that occurs at the time of water level adjustment or drainage work.

As shown in FIG. 2D, the holding tube 106 is provided with a first hole 108 at the upper end. The first hole 108 is a hole that penetrates in the direction perpendicular to the longitudinal direction of the cylindrical or rod-shaped holding pipe 106, and the core portion 102 of the water level adjusting portion 105 is positioned at a desired position through the first hole 108. It can be fixed with. Therefore, as shown in FIG. 2C, a second hole 109 that overlaps with the first hole 108 is also formed at the upper end of the core portion 102.

When draining the water in the lock 10, for example, as shown in FIG. 5D, the first hole 108 provided in the holding pipe 106 and the second hole 109 provided in the core portion 102 are aligned with each other. , A pin of the fixing member 120 is inserted between the aligned first hole 108 and the second hole 109 to fix them to each other.

As a result, as shown in FIG. 3A or FIG. 3B, the water level adjusting portion 105 is suspended from the holding pipe 106 in a state where the lower end of the holding pipe 106 is in contact with the bottom surface of the mass 111 (suspension). (Lower state). At this time, since the holding pipe 106 is formed longer than the core portion 102, the plug portion 104 joined to the lower end of the water level adjusting portion 105 is lifted further upward than the state of being seated on the plug seat 113. It is held in a position where it comes off from the stopper 113 (see FIG. 4).

The fixing member 120 is not particularly limited as long as it can fix the core portion 102 and the holding tube 106, but it is preferable to use a shaft lock pin that is easily attached and detached and also has a function as a handle. For the shaft lock pin, a high-strength material having excellent corrosion resistance, such as stainless steel, is used in order to enable the water level adjusting portion 105 and the holding pipe 106 to be fixed for a long period of time.

When the fixing member 120 is not used during the wastewater treatment according to the present embodiment, the fixing member 120 is held in a state of being inserted into the first hole 108 of the holding pipe 106, and is always housed in the protection pipe 101. The fixing member 120 can be prevented from being lost, and the drainage work can be performed reliably and smoothly.

As described above, according to the sluice 10 according to the embodiment of the present invention, the plug portion 104 is arranged inside the core portion 102, the water level adjusting portion 105 is suspended in the protective pipe 101, and the plug portion 104 is removed from the plug seat 113. By providing the holding pipe 106 that can be held in the detached position, the plug portion 104 of the water level adjusting portion 105 can be stably held in the position that is detached from the stopper seat 113 inside the protective tube 101. As a result, it is not necessary to project the outer cylinder or the like from the ridge 1 at the time of drainage, so that it is possible to suppress obstacles to walking and running on the ridge.

Further, according to the sluice 10 according to the embodiment of the present invention, the holding pipe 106 is self-supporting in the protective pipe 101, and the water level adjusting portion 105 is hung from the holding pipe 106 to cover the holding pipe 106 as in Patent Document 2 and the like. It is not necessary to suspend the water level adjusting unit 105. Therefore, it is not necessary to reinforce the lid 100 or form a large groove for strongly pulling the lid 100, so that the device configuration can be simplified.

Further, the fixing member 120 is housed in the protective pipe 101 while being attached to the holding pipe 106 when the wastewater treatment is not performed, and the fixing member 120 is removed from the holding pipe 106 and held when the wastewater treatment is performed. Since the pipe 106 and the core portion 102 may be reconnected, it is possible to prevent the fixing member 120 from being lost and the like, and the adjustment work of the water lock 10 can be smoothly performed.

Next, the drainage method using the sluice 10 according to the embodiment of the present invention will be described with reference to FIGS. 1 and 5 (a) to 5 (d).

For example, from the state where the water level adjusting unit 105 is housed in the protective pipe 101 as shown in FIG. 1, the lid 100 is first removed, and the water level adjusting unit 105 and the holding pipe 106 are taken out.

Next, as shown in FIGS. 5A to 5C, the fixing member 120 penetrating the first hole 108 of the holding tube 106 is removed from the first hole 108 and placed at the upper end of the holding tube 106. The positions of the first hole 108 formed and the second hole 109 formed at the upper end of the core portion 102 are overlapped with each other. Next, as shown in FIG. 5D, the fixing member 120 is inserted into the first hole 108 and the second hole 109 to fix the holding pipe 106 and the core portion 102. Then, by returning the holding pipe 106 and the core portion 102 fixed to the inside of the protection pipe 101 of FIG. 1, the water level adjusting portion 105 is suspended from the holding pipe 106 inside the protection pipe 101 to adjust the water level. The portion 105 can be held at a position where the stopper portion 104 is separated from the stopper seat 113, and drainage can be performed quickly, smoothly and surely.

Thus, although the invention has been described by the embodiments described above, the statements and drawings that form part of this disclosure should not be understood to limit the invention. From this disclosure, various alternative embodiments and operational techniques will be clarified to those skilled in the art, and at the implementation stage, they can be deformed and embodied within a range that does not deviate from the gist.

1 ... Ridge 10 ... Aqueduct 11 ... Field 12 ... Maximum water depth during rice cultivation 13 ... Underground irrigation water level during field cultivation 100 ... Lid 101 ... Protective pipe 102 ... Core part 103 ... Bellows part 104 ... Plug part 105 ... Water level adjustment Part 106 ... Holding pipe 108 ... First hole 109 ... Second hole 110 ... T-shaped pipe 111 ... Mass 112 ... Adapter 113 ... Plug seat 114 ... Underdrain water distribution pipe (114a, 114b ... Drainage pipe)
115 ... Horizontal pipe 116 ... Inner pipe 117 ... Outer pipe 118 ... Screw 120 ... Fixing member

Claims (5)

The lower end is connected to a horizontal pipe capable of draining water to the outside of the field, and is connected to the underdrain distribution pipe extending below the field at a position higher than the horizontal pipe, and the upper end protrudes from the ridge. A protective pipe buried in the ridge and provided with a plug seat inside so as not to prevent
The core portion that is held inside the protective tube and extends from the upper end side to the lower end side of the protective tube, is joined to the lower end of the core portion , and is housed in the plug seat. A plug portion for stopping the flow of water from the underdrain distribution pipe to the horizontal pipe , and the outer periphery of the core portion are expandable and contractible along the extending direction of the core portion, and one end is joined to the plug portion. A water level adjusting portion having a stretchable bellows portion whose other end is fixed at a desired position of the core portion and whose water level can be adjusted, and a water level adjusting portion.
It has a tubular shape or a rod shape, is inserted inside the core portion, extends from the upper end side to the lower end side of the protective tube, is longer than the core portion, and has a lid of the protective tube. With a holding tube having a length that does not interfere with the protective tube and the lid when closed
Equipped with
In the lower end of the holding tube in the protective tube is in contact with the bottom surface of the protective tube, and fixing the water level adjusting unit to the holding tube, the Rukoto so please suspended the water level adjustment unit from the holding tube, A water sluice characterized in that the plug portion can be lifted above the plug seat and held at a position away from the plug seat. The holding tube is provided with a first hole for fixing the pre-Symbol wick portion in the upper end portion,
The core portion comprises a second hole that overlaps the first hole.
The sluice according to claim 1, wherein the fixing member penetrates the aligned first hole and the second hole to fix the holding pipe and the core portion. The sluice according to claim 2, wherein the fixing member includes a shaft lock pin. The protective tube has a multi-tube structure including an inner tube and an outer tube arranged on the outside of the inner tube so as to cover a part of the outer periphery of the inner tube, and the position of the outer tube is adjusted. The water shackle according to any one of claims 1 to 3, wherein the length of the protective tube can be adjusted so as not to protrude from the ridge. The lower end is connected to a horizontal pipe capable of draining water to the outside of the field, and is connected to the underdrain distribution pipe extending below the field at a position higher than the horizontal pipe, and the upper end protrudes from the ridge. A protective tube that is buried in the ridge and provided with a plug seat inside, and a core that is held inside the protective tube and extends from the upper end side to the lower end side of the protective tube. At the stopper portion for stopping the flow of water from the underdrain distribution pipe to the horizontal pipe by being joined to the lower end of the core portion and housed in the stopper seat, and at the outer periphery of the core portion. A stretchable bellows portion that is expandable and contractible along the extending direction of the core portion, one end is joined to the plug portion, and the other end is fixed at a desired position of the core portion and the water level can be adjusted. It has a water level adjusting portion and a tubular or rod-shaped portion, is inserted inside the core portion, extends from the upper end side to the lower end side of the protective tube, and is longer than the core portion. Moreover, it is a drainage method of a water pipe including the protective pipe and a holding pipe having a length that does not interfere with the lid when the lid of the protective pipe is closed.
Align the positions of the first hole formed in the upper end portion of the holding pipe and the second hole formed in the upper end portion of the core portion, and attach the fixing member to the first hole and the second hole. by fixing the holding tube disposed between said wick portion, in a state where the lower end of the holding tube in the inner protective tube is in contact with the bottom surface of the protective tube, the water level adjusting unit to the holding tube fixed to said by Rukoto the water level adjusting unit so please suspended from the holding tube, lift the stopper portion upward from the plug seat, water閘including be drained by held in a position disengaged from said stopper seat Drainage method.

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