JPWO2018221154A1 - Water lock and water lock drainage method - Google Patents

Abstract

(EN) Provided are a lock bar and a lock bar drainage method capable of suppressing obstacles to walking and running on a ridge and capable of draining water reliably and smoothly. It can be embedded so as not to project from the ridge 1, and is joined to the protection tube 101 having the plug seat 113 provided therein, the core portion 102 extending inside the protection tube 101, and the lower end of the core portion 102. It is expandable and contractable along the extending direction of the plug part 104 and the core part 102, one end is joined to the plug part 104, and the other end is fixed to a desired position of the core part 102 so that the water level can be adjusted. The water level adjusting unit 105 including the flexible bellows unit 103 and the inside of the core unit 102 are disposed inside the protection pipe 101 to suspend the water level adjusting unit 105 so that the plug unit 104 is removed from the plug seat 113. The lock bar 10 includes a holding tube 106 that can hold the water.

Description

  The present invention relates to a water lock and a method for draining the water lock.

  As a drainage method for agricultural land, culvert drainage buried in the ground and used as a drainage channel is widely used. A water lock is known as a facility for adjusting the water level of farmland. For example, FIG. 9 of Japanese Patent No. 4745103 (Patent Document 1) discloses an example of a vertical pipe type horizontal water lock.

  In the vertical pipe type horizontal water lock shown in FIG. 9, a valve stem having a valve attached to a lower end is arranged in the protection tube, and an upper end of the valve stem projects upward from an upper end of the protection tube. An outlet pipe is attached to one of the T-tubes arranged at the lower end of the protective tube, and a drinking 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 the water. At the time of autumn harvest, the valve stem is raised to open the valve and drain. Further, it is disclosed that the valve stem is raised to open the valve during the winter season.

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

  FIG. 3 of JP-A-2004-65038 (Patent Document 3) discloses an example of a groundwater level adjusting water lock. According to the underground water level adjusting water lock shown in FIG. 3, the handle provided at the upper end of the connecting member is formed so as to be able to be hooked on the hanging tool provided on the back surface of the lid, so that the water level adjusted through the water level adjusting port at the time of drainage is adjusted. The pipe can be stored in the water level adjustment basin with the pipe hooked on the hanging tool. This eliminates the need to take out the water level adjustment pipe from the water level adjustment basin 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 adjustment basin, it corresponds to each water level adjustment basin Not only can the used water level control pipe be reliably used, but also there is no problem in transporting or storing the water level control pipe during drainage of groundwater.

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

  However, a water lock as described in Patent Literature 1 describes a configuration in which a valve stem is lifted up during winter to open the valve, but the valve stem falls due to the weight of snow, and the water lock state is set. There is a possibility that it will. When the water is stopped in the spring to autumn, the valve stem protrudes upward from the protective tube, so that the valve stem may be broken by catching a foot or the like. Furthermore, if the valve stem protrudes from the protective tube, there is a possibility that it will be an obstacle when mowing or the like.

  The water lock described in Patent Literature 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 full at the set groundwater level. Therefore, it is necessary to set the locking part at a position higher than the ridge or to install packing etc. to take measures against water stoppage. When the locking part is set at a position higher than the ridge, the lid is attached further upward, and as a result, the outer cylinder is at a construction position protruding from the ridge. If it protrudes greatly, it will be a hindrance when mowing grass and the like, as in the case of the water lock of Patent Document 1. If it protrudes small, it will be difficult to notice and cause a trip.

  In the water lock described in Patent Literature 3, when the lid is opened and closed while the inner cylinder is hooked on the hanging tool formed on the back surface of the lid, the lid becomes heavy. Relatively large protrusions, holes, etc. must be formed in the lid so that the lid can be gripped. When the handle is formed on the lid, it is hard to notice because the protrusion is small, which may cause a trip. When a hole is formed in the lid, dust or the like easily enters the water level adjusting basin.

  In view of the above-mentioned problems, the present invention provides a water lock and a water lock drainage method capable of suppressing obstacles to walking and running on the levee and capable of reliably and smoothly draining water.

  In order to solve the above-mentioned problem, in one aspect, the present invention is capable of being buried so as not to protrude from a ridge, and includes a protective tube provided with a plug seat therein, and a core portion extending inside the protective tube. A plug portion joined to the lower end of the core portion, and is extendable and contractible along the extending direction of the core portion, one end is joined to the plug portion, and the other end is fixed to a desired position of the core portion. A water level adjustment unit having a telescopic bellows part that can adjust the water level and a water level adjustment unit that is arranged inside the center core and suspends the water level adjustment unit in the protective tube and can be held at a position where the plug part comes off the plug seat A water lock comprising a holding pipe is provided.

  In one embodiment of the water lock according to the present invention, the holding tube has a length longer than the center core, and a length that does not interfere with the protection tube and the cover when the cover of the protection tube is closed, and fixes the center core. A first hole at an upper end portion, a middle core portion includes a second hole overlapping the first hole, and the fixing member includes a first hole and a second hole aligned with each other. This includes fixing the holding tube and the core portion through the through hole.

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

  In still another embodiment of the water lock according to the present invention, the protective tube has a multi-tube structure including an inner tube and an outer tube arranged outside the inner tube, and adjusts a position of the outer tube. Thereby, the length of the protective tube can be adjusted so as not to protrude from the ridge.

  According to another aspect of the present invention, there is provided a protective tube which can be buried so as not to protrude from a ridge, and has a plug seat provided therein, a central portion extending inside the protective tube, and a lower end of the central portion. The plug is joined with the plug, and is extendable and contractable along the extending direction of the core. One end is joined to the plug, and the other end is fixed to a desired position of the core, and the water level can be adjusted. A drainage method for a water lock, comprising: a water level adjusting part having an elastic bellows part; and a holding pipe arranged inside the center part and capable of holding the water level adjusting part at the time of drainage, the method being formed at an upper end part of the holding pipe. The position of the first hole and the position of the second hole formed at the upper end of the core portion are aligned, and a fixing member is disposed in the first hole and the second hole, so that the holding tube, the core portion, By fixing the water level adjustment part to the holding tube inside the protection tube, the water level adjustment part is held at the position where the plug part comes off from the plug seat. It was drained method of water 閘 which involves drainage is provided.

  Advantageous Effects of Invention According to the present invention, it is possible to provide a water lock and a water lock drain method capable of reliably and smoothly draining water, which can be prevented from hindering walking and running on a ridge.

It is a mimetic diagram showing the example of the state where the water lock concerning an embodiment of the invention was installed. FIGS. 2A and 2B are schematic diagrams illustrating components that constitute a water lock according to an embodiment of the present invention. FIG. 2A is a protective tube, FIGS. 2B and 2C are water level adjustment units, and FIG. FIG. 3 is a schematic view showing a holding tube. FIG. 3A is a schematic diagram illustrating a configuration in a case where a water lock according to an embodiment of the present invention is in a drained state. FIG. 3A illustrates an example in a case where a regulated water level is low, and FIG. FIG. It is a schematic diagram showing the height of the water lock of the water lock which concerns on embodiment of this invention at the time of drainage. 5 (a) to 5 (d) are schematic diagrams for explaining processing required when performing drainage processing using the water lock according to the embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The embodiments described below exemplify an apparatus and a method for embodying the technical idea of the present invention. The technical idea of the present invention specifies the structure, arrangement, and the like of the components as follows. It does not do.

  FIG. 1 is a schematic diagram showing an example of a state where a water lock 10 according to an embodiment of the present invention is installed. The water lock 10 is buried so as not to protrude from the top end 1 a of the ridge 1. In the example illustrated in FIG. 1, an example is described in which the water lock 10 is buried near the center of the ridge 1 in the vertical direction with respect to the upper surface (top end 1 a) of the ridge 1. However, the embedding position of the water lock 10 is not limited to the example illustrated in FIG. 1, and is not limited to the position illustrated in FIG. 1 as long as the function of the water lock 10 can be exhibited.

  For example, the water lock 10 may be displaced toward the slope 1b of the ridge 1. Further, the ridge 1 means a slender land portion on which a water lock 10 that is raised higher than the field 11 used for cultivation can be installed, and a farm road and the like are also included in the ridge 1.

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

  The protection tube 101 is formed of a synthetic resin such as vinyl chloride. The protection tube 101 is provided with a T-tube 110. The T-shaped pipe 110 is connected to an underdrain water pipe 114 extending underground below the field 11. The underdrain pipe 114 may include a non-porous drain pipe 114a and a perforated drain pipe 114b.

  The perforated drainage pipe 114b can permeate underground from the surface of the ground and allow water permeating into the pipe from the hole of the pipe to flow into the water lock 10. In addition, the water supplied from the upper side of the perforated drainage pipe 114b can flow into the water lock 10. The water flowing into the water lock 10 can fill the inside of the perforated drainage pipe 114b with water by the water level adjusting unit 105 described later. Thus, water can be supplied to the field 11 above the drain pipe 114b. On the other hand, a horizontal pipe 115 is connected to the lower end of the protection 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, an adapter 112 is disposed inside the lower end of the protection tube 101. The adapter 112 is a structure for seating or unsealing the plug 104 of the water level adjusting unit 105 shown in FIG. 2B described later, and opening or closing the water lock 10. The T-tube 110 is joined to the upper part of the adapter 112. A mass 111 is joined to a lower portion of the adapter 112.

  A plug seat 113 having a concave shape that matches the outer shape of the plug unit 104 is provided in the adapter 112 so that the plug unit 104 of the water level adjustment unit 105 described below can be seated. When the plug 104 is accommodated in the plug seat 113, the plug 104 is closed in the protective tube 101 (see FIG. 3A), whereby the culvert distribution pipe 114 is directly connected to the horizontal pipe 115. The flowing water is adjusted by the set height of the water level adjustment unit 105, and thereby the water level of the field 11 is adjusted.

  As shown in FIG. 2A, the protection tube 101 has a multi-tube structure including an inner tube 116 and an outer tube 117 disposed outside the inner tube 116 so as to cover a part of the inner tube 116. ing. The outer pipe 117 can slide up and down along the inner pipe 116, and thereby the length of the protection pipe 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 using a screw 118 or the like provided at an end of the outer tube 117. . Thereby, as shown in FIG. 1, it is possible to adjust the entire length of the protection tube 101 so as not to protrude from the ridge 1.

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

  As shown in FIGS. 2B and 2C, the bellows portion 103 is joined so as to be able to expand and contract along the extending direction of the core portion 102. The method of joining the bellows portion 103 to the plug portion 104 may be such that the bellows portion 103 may be directly adhered to the plug portion 104, may be fitted thereto, may be tightened with a fastener such as a band, or may be formed using a collar. Is also 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 the material has water resistance and water stoppage.

  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 using a screw 118 or the like, and can be held at a predetermined position.

  For example, as shown in FIG. 3B, the water level on the field 11 can be adjusted to the maximum water depth 12 during rice cultivation (see FIG. 1) by extending and fixing the bellows 103 to the upper side. When it is desired to lower the water level of the water, as shown in FIG. 3A, the bellows portion 103 is contracted downward and the bellows portion 103 is fixed to the core portion 102 with screws 118 or the like, so that Can be adjusted down to the underground irrigation water level 13 (see FIG. 1) during field cultivation.

  As shown in FIG. 2 (d), the holding tube 106 has an outer diameter smaller than the inner diameter of the core 102 so as to be housed inside the cylindrical core 102, and has a rod-like or hollow cylindrical shape. It has a shape-like appearance. The holding tube 106 can be formed of a synthetic resin material such as vinyl chloride having excellent 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 protection tube 101 and the cover 100 when the cover 100 of the protection tube 101 is closed. By being formed longer than the core portion 102, the core portion 102 can be suspended by the holding tube 106 in the protection tube 101 as shown in FIG. Since the holding tube 106 has a length that does not interfere with the protection tube 101 and the lid 100, the holding tube 106 can always be kept in the protection tube 101 even when the holding tube 106 is not used. In addition, it is possible to prevent parts from being lost due to adjustment of the water lock 10 which occurs during water level adjustment or drainage.

  As shown in FIG. 2D, the holding tube 106 has a first hole 108 at the upper end. The first hole 108 is a hole penetrating in a direction perpendicular to the longitudinal direction of the cylindrical or rod-shaped holding tube 106, and the center part 102 of the water level adjusting unit 105 is positioned at a desired position via the first hole 108. It can be fixed with. For this reason, as shown in FIG. 2C, a second hole 109 overlapping the first hole 108 is also formed at the upper end of the core 102.

  When the water in the water lock 10 is drained, for example, as shown in FIG. 5D, the first hole 108 provided in the holding tube 106 and the second hole 109 provided in the core 102 are aligned. Then, the pin of the fixing member 120 is inserted between the aligned first hole 108 and the second hole 109 to fix them together.

  Thus, as shown in FIG. 3A or 3B, the water level adjusting unit 105 is suspended from the holding tube 106 with the lower end of the holding tube 106 in contact with the bottom surface of the mass 111 (suspension). (Down state). At this time, since the holding tube 106 is formed longer than the middle 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 where the plug portion 113 is seated on the plug seat 113, It is held at a position off the plug seat 113 (see FIG. 4).

  The fixing member 120 is not particularly limited as long as the core portion 102 and the holding tube 106 can be fixed. However, it is preferable to use a shaft lock pin which is easily detachable and has a function as a handle. The shaft lock pin is made of a material having high corrosion resistance and high strength, such as stainless steel, in order to enable the water level adjustment unit 105 and the holding tube 106 to be fixed for a long period of time.

  When the fixing member 120 is not used at the time of drainage 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 tube 106, and is always housed in the protection tube 101. The fixing member 120 can be hardly lost, and the drainage operation can be performed reliably and smoothly.

  As described above, according to the water lock 10 according to the embodiment of the present invention, the water level adjusting unit 105 is suspended inside the protection tube 101 by disposing the plug 104 from the plug seat 113. The provision of the holding tube 106 that can be held at a position where the plug portion 104 is detached allows the plug portion 104 of the water level adjustment portion 105 to be stably held at a position where the plug portion 113 is removed from the plug seat 113 inside the protection tube 101. Accordingly, it is not necessary to project an outer cylinder or the like from the ridge 1 at the time of drainage, so that it is possible to suppress an obstacle to walking or running on the ridge.

  Further, according to the water lock 10 according to the embodiment of the present invention, the holding pipe 106 is self-supporting in the protection pipe 101, and the water level adjusting unit 105 is hung on the holding pipe 106. It is not necessary to suspend the water level adjustment unit 105 at the same time. Therefore, there is no need to reinforce the lid 100 or to form a large groove for strongly pulling the lid 100, so that the configuration of the apparatus can be simplified.

  Further, when the drainage treatment is not performed, the fixing member 120 is housed in the protective tube 101 while being attached to the holding tube 106, and when the drainage treatment is performed, the fixing member 120 is detached from the holding tube 106 and held. Since the pipe 106 and the core 102 may be connected again, the fixing member 120 can be prevented from being lost, and the water lock 10 can be adjusted smoothly.

  Next, a drainage method using the water lock 10 according to the embodiment of the present invention will be described with reference to FIGS. 1 and 5A to 5D.

  For example, from a state in which the water level adjusting unit 105 is housed in the protective tube 101 as shown in FIG. 1, first, the lid 100 is removed, and the water level adjusting unit 105 and the holding tube 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 the fixing member 120 is attached to the upper end of the holding tube 106. The position of the formed first hole 108 and the position of the second hole 109 formed at the upper end of the core 102 are overlapped. 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 tube 106 and the core 102. Then, by fixing the holding tube 106 and the core 102 to the inside of the protection tube 101 in FIG. 1, the water level adjustment unit 105 is suspended on the holding tube 106 inside the protection tube 101, and the water level is adjusted. The portion 105 is held at a position where the plug portion 104 is separated from the plug seat 113, so that drainage can be quickly, smoothly, and surely performed.

  As described above, the present invention has been described with reference to the above embodiments. However, it should not be understood that the description and drawings constituting a part of this disclosure limit the present invention. From this disclosure, various alternative embodiments and operation techniques will be apparent to those skilled in the art, and in the implementation stage, the invention can be modified and embodied without departing from the gist thereof.

DESCRIPTION OF SYMBOLS 1 ... Ridge 10 ... Water lock 11 ... Field 12 ... Maximum water depth at the time of rice cultivation 13 ... Water level for underground irrigation at the time of field cultivation 100 ... Lid 101 ... Protective tube 102 ... Core part 103 ... Bellows part 104 ... Plug part 105 ... Water level adjustment Part 106: Holding tube 108: First hole 109: Second hole 110: T-shaped tube 111: Mass 112: Adapter 113: Plug seat 114: Drain pipe (114a, 114b: Drain pipe)
115 ... horizontal pipe 116 ... inner pipe 117 ... outer pipe 118 ... screw 120 ... fixing member

Claims (5)

A protection tube that can be buried so as not to protrude from the ridge and has a plug seat inside,
A core portion extending inside the protection tube, a plug portion joined to a lower end of the core portion, and an extendable / contractible member extending along the extending direction of the core portion, one end of which is joined to the plug portion A water level adjustment unit including a telescopic bellows part, the other end of which is fixed at a desired position of the center portion and the water level is adjustable.
A water lock, wherein the water lock is provided inside the center core portion, and is capable of suspending the water level adjusting portion within the protection tube so that the plug portion can be held at a position off the plug seat. The first holding tube has a length longer than the core portion and a length that does not interfere with the protection tube and the lid when the cover of the protection tube is closed, and a first portion for fixing the core portion. With a hole at the upper end,
The core portion includes a second hole overlapping the first hole;
2. The water lock according to claim 1, wherein the fixing member includes fixing the holding tube and the center core portion through the aligned first and second holes. 3.   The water lock 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 disposed outside the inner tube, and adjusting the position of the outer tube to reduce the length of the protective tube. The water lock according to any one of claims 1 to 3, wherein the water lock is adjustable so as not to protrude from the shore. A protection tube that can be buried so as not to protrude from the ridge and has a plug seat provided therein, a core portion extending inside the protection tube, a plug portion joined to a lower end of the core portion, And a telescopic bellows which is extendable and contractible along the extending direction of the core portion, one end of which is joined to the plug portion, and the other end of which is fixed at a desired position of the core portion and whose water level can be adjusted. A water level adjusting unit including a portion, a drainage method for a water lock including a holding pipe that is disposed inside the center core portion and that can hold the water level adjusting portion during drainage,
Align the position of the first hole formed at the upper end of the holding tube with the position of the second hole formed at the upper end of the core, and attach a fixing member to the first hole and the second hole. By disposing and fixing the holding tube and the core portion, the water level adjusting portion is suspended from the holding tube inside the protection tube, and the water level adjusting portion is moved by the plug portion to the plug seat. A method for draining a water lock, comprising draining the water by holding it at a position outside of the water lock.

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