JP4403110B2 - Paddy field automatic water supply system - Google Patents

Description

  The present invention relates to a paddy field automatic water supply apparatus.

Conventionally, as this type, a water level sensor for detecting the water level is provided in the paddy field, and the water level detection information of the water level sensor is input to the control personal computer by the wireless transmission device, and the water level in the paddy field is predetermined on the control personal computer beforehand. The control program created to control the water level is input, the water level information of this control program is compared with the water level detection information input to the control PC, and the value of the water level detection information is If the water level information is less than the predetermined value, the paddy water level automatic control system that opens the water supply control valve provided at the water supply port of the paddy field and supplies water until the water level of the paddy field reaches the predetermined value based on the water level information of the control program ( For example, in Patent Document 1), the water level detector installed in the paddy field and the water supply control installed at the intake of the irrigation channel are connected by a cable. Sending of increasing or decreasing the signal detected water level detecting unit to the water supply control unit, a water supply gate was opened and closed by a motor, which supply the water and the water shut-off in the paddy field automatically (for example, Patent Document 2), and the like.
Japanese Patent Laid-Open No. 11-220962 JP 2005-143491 A

  In Patent Document 1, a water level sensor and a water supply control valve drive means are used, and in Patent Document 2, a water level detection unit, a motor, and the like are used. Is necessary, and is unsuitable for use in paddy fields, etc., and is inferior in maintainability.

  Then, an object of this invention is to provide the paddy field automatic water supply apparatus which does not require a power supply and can supply water stably.

  According to the first aspect of the present invention, there is provided a paddy field automatic water supply apparatus that automatically feeds water according to fluctuations in the water level of the paddy field, and a float that moves up and down due to fluctuations in the water level of the paddy field. An unlocking means that moves and releases the locking; and the opening and closing operation body drops and moves from the upper locking position to the lower locking releasing position to open the water supply valve, and the upper locking position And a water supply valve opening / closing means for closing the water supply valve, and an opening / closing operation body locking means for moving the opening / closing operation body to the upper locking position when the water level of the paddy field rises.

  The invention of claim 2 comprises a float that moves up and down due to fluctuations in the water level of the paddy field, and a gear that rotates as the float moves up and down. The rotation of the gear advances and retracts the locking release means, The water supply valve includes a sub valve and a main valve that opens and closes by opening and closing the sub valve, and the water supply valve opening and closing means is connected to the opening and closing operation unit of the sub valve and operates the opening and closing operation unit, The opening / closing operation body locking means includes a valve opening / closing float provided at a front end of the opening / closing operation arm and moving up and down by a change in the water level of the paddy field, and an engaging portion of the opening / closing operation body and the opening / closing operation arm. Is.

  According to the configuration of the first aspect, when the paddy field is above the predetermined water level, the opening / closing operation body is in the upper locking position, and in this state, when the water level of the paddy field is lowered and the float is lowered, the unlocking means is opened and closed. When the open / close operating body is moved to the upper locking position side of the operating body to release the locking, and the unlocked opening / closing operating body falls to the lower locking releasing position, the water supply valve opening / closing means is moved to the water supply valve The water supply is performed automatically. When the water level of the paddy field rises due to this water supply, the opening / closing operating body locking means moves and locks the opening / closing operating body to the upper locking position, and the water supply valve is closed.

  According to the configuration of claim 2, when the paddy field is at a predetermined water level or higher, the opening / closing operation body is in the upper locking position, and in this state, when the water level of the paddy field is lowered and the float is lowered, the gear is unidirectional. When the gear rotates, the unlocking means advances to the upper locking position of the opening / closing actuator and releases the locking. On the other hand, when the float rises, the gear rotates in the other direction and the locking release means moves backward.

  In addition, the opening / closing operation arm pivots by the vertical movement of the valve opening / closing float to open / close the sub-valve, and opening / closing the sub-valve opens / closes the main valve larger than the sub-valve, thereby efficiently supplying a large amount of water. Can supply water.

  In addition, when the opening / closing operation arm is turned upward by raising the valve opening / closing float, the opening / closing operation body engaged with the opening / closing operation arm moves to the upper locking position and is locked.

  Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments described below do not limit the contents of the present invention described in the claims. In addition, all of the configurations described below are not necessarily essential requirements of the present invention. In each Example, the paddy field automatic water supply apparatus which is different from the conventional paddy field automatic water supply apparatus is obtained, and the paddy field automatic water supply apparatus is described respectively.

  Hereinafter, Example 1 of the paddy field automatic water supply apparatus of this invention is demonstrated with reference to FIGS. As shown in the figure, the paddy field automatic water supply apparatus 1 automatically controls the water supply according to the fluctuation of the water level W of the paddy field 101, the float 2 that moves up and down by the fluctuation of the water level of the paddy field 101, and this float 2. Is moved to the upper locking position 4 side of the opening / closing operation body 3 and the driven rack body 5 as an unlocking means for releasing the locking and the opening / closing operation body 3 from the upper locking position 4 to the lower locking position. The water supply valve 6 is opened by dropping and moving to the release position 9, and the opening / closing operation arm 7 is a water supply valve opening / closing means for closing the water supply valve 6 at the upper locking position 4, and is opened / closed by raising the water level W of the paddy field 101. And an opening / closing operating body locking means 8 for moving the operating body 3 to the upper locking position 4.

  The float 2 is provided at the distal end of the rotating arm 11, and the proximal end side of the rotating arm 11 is rotatably connected to the pivoting portion 12 at a fixed position. An elevating rack body 14 is connected to the center side of the rotating arm 11 by a link piece 13, and this elevating rack body 14 is provided so as to be movable in the vertical direction by a guide member (not shown). To go up and down. The lifting rack body 14 has a rack 14A. The rotating arm 11 is disposed obliquely with the proximal end connected to the pivoting portion 12 as the upper side and the distal end on the float 2 side as the lower side.

  The machine body 15 is installed in a fixed state on the paddy field 101, and the machine body 15 has a substantially horizontal reference surface 16.On one side of the reference surface 16, the lifting rack body 14 is arranged in the vertical direction. A gear 17 that meshes with the rack 14A is rotatably provided on the machine body 15. Further, the driven rack body 5 is provided so as to be laterally movable along the reference surface 16, and the driven rack body 5 is guided by a guide member (not shown) so as to be laterally movable. In addition, a rack 5 </ b> A that meshes with the gear 17 is formed at the upper part on the base end side of the driven rack body 5. On the leading end side of the driven rack body 5, the reference surface 16 has the upper locking position 4, and the upper locking position 4 is a corner 4A. The corner 4A is formed between the reference surface 16 and a substantially vertical vertical surface 18. Further, the height dimension of the vertical surface 18 is shorter than the length dimension of the main body 21 of the opening / closing operation body 3, and the weight 23 is in the state where the locking portion 22 is locked at the upper locking position 4. Located on the lower inner side of the vertical surface 18. The opening / closing operation body 3 is substantially U-shaped in the front, and is provided with a laterally engaging portion 22 that engages with the corner portion 4A of the upper engaging position 4 at the upper portion of the main body 21 in the vertical direction and at the lower portion. A weight 23 protruding in the same direction as the locking portion 22 is provided. Note that the tip 22A of the locking portion 22 is formed in an arc shape to reduce resistance. In addition, a through hole 24 that is an engaging portion of an opening / closing operation arm, which will be described later, is formed in the approximate center of the main body 21. The through hole 24 is elongated in the length direction of the main body 21 as necessary. It is formed. The lower end of the vertical surface 18 is above the position of the through hole 24 in a state where the locking portion 22 is locked at the upper locking position 4. With the through hole 24 as the center, the opening / closing operation body 3 is formed such that the lower side on which the weight 23 is provided is heavier than the upper side on which the locking portion 22 is provided. In this case, the weight 23 acts to rotate the opening / closing operation body 3 in a direction in which the locking portion 22 is locked to the upper locking position 4 of the corner portion 4A.

Accordingly, in a state where the opening and closing member 3 of the locking portion 22 is engaged with the upper engaging position 4 is the opening and closing body 3 hanging on the corner 4A, that the water level W of paddy 101 is lower When the float 2 is lowered, the rotating arm 11 is rotated down direction about the pivot point 12, the elevating rack 14 which is connected by a link piece 13 in a position close to the hinged portion 12 from the float 2 under a large force by the principle of leverage Gerare, gear 17 is rotated by the descent of the elevating rack 14, the driven rack body 5 which meshes with the gear 17 is moved toward the upper engaging position 4, the engagement portion By hitting 22 and pushing it, the locking portion 22 is disengaged from the corner portion 4A, so that the opening / closing operation body 3 falls due to its own weight or the like and falls to the lower locking release position 9.

  The water supply valve 6 includes a sub valve 25 made of a ball tap and the like, and a main valve 26 that opens and closes by opening and closing the sub valve 25, and the opening / closing operation arm 7 is connected to the opening / closing operation section 25 of the sub valve 25. In the middle of the opening / closing operation arm 7, the opening / closing operation arm 3 is loosely inserted into the through hole 24, and a valve opening / closing float 27 is provided at the tip of the opening / closing operation arm 7. The opening / closing operation arm locking means 8 is constituted by the opening / closing operation arm 7, the through hole 24, and the valve opening / closing float 27.

  As shown in the side view of FIG. 3, the opening / closing operation arm 7 has a plane crossing direction with the advancing / retreating direction of the driven rack body 5, the base end side is the upper side, and the tip end of the valve opening / closing float 27 side is the lower side. Are arranged diagonally. The opening / closing operation body 3 has an arc shape centered on the tip of the opening / closing operation arm 7, and arc-shaped guide members 28, 28 sandwiching the arc-shaped opening / closing operation body 3 from the front and rear are provided. The guide members 28, 28 are provided with insertion holes 29, 29 that allow the opening / closing operation arm 7 to move up and down in a substantially vertical direction, and are guided by the insertion holes 29, 29 so that the opening / closing operation arm 7 is opened. 7 rotates in the vertical direction. The guide member 28 is fixed to the machine body 15. The opening / closing operation arm 7 is in a position for closing the auxiliary valve 25 in a state where the locking portion 22 of the opening / closing operation body 3 is locked at the upper locking position 4, and for opening / closing the valve The float 27 is in the air (above the highest water level WH). When the water level W of the paddy field drops from the highest water level WH to the lowest water level WL that requires water supply, the float 2 descends, the elevator rack body 14 descends as the float 2 descends, and the driven rack body 5 By moving toward the upper locking position 4 and pushing the locking portion 22, the opening / closing operation body 3 falls freely due to its own weight and the weight of the valve opening / closing float 27, and the valve opening / closing float 27 is at the lowest. The opening / closing operation body 3 stops at a position floating on the water surface of the water level WL, and this position is the lower locking release position 9, and the front end portion of the locking section 22 due to the balance of the opening / closing operation body 3 by the weight 23. 22A is in contact with the vertical surface 18. When the opening / closing operation body 3 falls from the upper locking position 4 and the opening / closing operation arm 7 rotates downward, the opening / closing operation section 25A is operated, the water supply valve 6 is opened, and the water pumped by the pump is supplied. Water is supplied to paddy field 101 having the lowest water level WL. When the water level of the paddy field 101 rises due to this water supply, the float 2 and the valve opening / closing float 27 rise. The float 2 rises as the water level rises, the lift rack body 14 rises as the float 2 rises, the gear 17 moves the driven rack body 5 away from the upper locking position 4, and the upper locking position 4 Thus, the locking portion 22 can be locked. At the same time, when the valve opening / closing float 27 rises due to the rise of the water level, the opening / closing operation arm 7 rotates upward, the opening / closing operation arm 7 lifts the opening / closing operation body 3, and the opening / closing operation body 3 moves along the guide members 28, 28. At this time, the weight 23 is urged counterclockwise in FIG. 3 by the weight 23, so that the tip 22A rises while sliding on the vertical surface 18, and when it exceeds the corner 4A, the locking portion 22 When the opening / closing operation arm 7 is rotated to this position, the opening / closing operation arm 7 operates the sub valve 25 to stop water supply by the water supply valve 6. The water level is the highest water level WH.

  Next, the water supply valve 6 will be described. The main valve 26 includes a valve box main body 31. The valve box main body 31 includes an inflow chamber 32 on the water inflow side and an outflow on the water outflow side. A chamber 33 is formed, and the inflow chamber 32 and the outflow chamber 33 communicate with each other through a valve port 34, and a valve body 35 is seated on the valve port 34 from the inflow chamber 32 side. An upper lid 36 is attached to the upper opening on the inflow chamber 32 side of the valve box body 31, and an inner lid 37 is provided for partitioning the upper lid 32 and the valve box body 31. The inner lid 37 has a shallow dish shape, A pressure receiving chamber 38 is formed between the upper lid 36 and the inner lid 37. In the center of the inner lid 37, a valve shaft 39 of the valve body 35 is slidably inserted and inserted into the pressure receiving body accommodating chamber 38, and a disc-shaped pressure receiving body is provided at the tip of the valve shaft 39. 40 is attached, and the pressure receiving body 40 is slidably fitted to the inner peripheral surface of the pressure receiving body accommodating chamber 38, and liquid tightness is secured by an O-ring 40A. The pressure receiving body 40 divides the pressure receiving body accommodating chamber 38 into one chamber 38A on the upper lid 36 side and the other chamber 38B on the inner lid 37 side. The inner lid 37 is provided with a valve 41 that serves as a check valve. The valve 41 allows the flow from the inflow chamber 32 to the other chamber 38B freely, and the flow in the opposite direction flows through the orifice 42 to control the flow rate. Configured to restrict. The pressure receiving body 40 is provided with an orifice 43 communicating with both chambers 38A and 38B. Further, the upper lid 36 is provided with a pressure release hole 45, and the pressure release hole 45 and the auxiliary valve 25 are connected by a closed conduit 46. The inflow chamber 32 is connected to an external pipe (not shown), and pressurized water is supplied by a pump 47 or the like.

  When the auxiliary valve 25 is closed, the water in the inflow chamber 32 flows into the other chamber 38B through the valve 41, and further flows into the one chamber 38A through the orifice 43 of the pressure receiving body 40. The pressures in the chambers 38A and 38B become equal to each other, and the valve body 35 is seated on the valve port 34 by the pressure in the inflow chamber 32, and the main valve 26 is closed. On the other hand, when the auxiliary valve 25 is opened, water in one chamber 38A flows out, and water flows from the other chamber 38B into one chamber 38A through the orifice 43. At this time, when the water passes through the orifice 43, A pressure drop occurs, the pressure in one chamber 38A becomes lower, the pressure difference 40 moves to the upper lid 36 side by this pressure difference, the valve element 35 moves away from the valve port 34, and the main valve 26 opens.

  Further, the paddy field automatic water supply apparatus 1 is provided with an operation release means 51 for manually stopping automatic water supply, and this operation release means 51 stops the descent of the lifting rack body 14 so that the rotary arm 11 In the position shown by the solid line in FIG. 1, the rotary arm 11 is supported from below to restrict the downward rotation, and the operation release means 51 is rotated and shown by a chain line. In the position, the rotary arm 11 can be rotated downward, and the lifting rack body 14 can be lowered again.

  Further, as shown in FIG. 5, the paddy field 101 is formed with a recess 52 deeper than others in a predetermined range, and the floats 2 and 27 of the apparatus 1 are arranged on the water surface of the recess 52.

  Thus, in this embodiment, in accordance with claim 1, in a paddy field automatic water supply apparatus that automatically feeds water according to fluctuations in the water level W of the paddy field 101, the float 2 that moves up and down due to fluctuations in the water level W of the paddy field 101, and this float 2 is moved to the upper locking position 4 side of the opening / closing operation body 3 and the driven rack body 5 is an unlocking means for releasing the locking, and the opening / closing operation body 3 is moved downward from the upper locking position 4. The water supply valve 6 is opened by dropping and moving to the stop release position 9, and the opening / closing operation arm 7 serving as a water supply valve opening / closing means for closing the water supply valve 6 at the upper locking position 4 and the rising of the water level W of the paddy field 101. Since the opening / closing operation body 3 is provided with the opening / closing operation body locking means 8 for moving the opening / closing operation body 3 to the upper locking position 4, the opening / closing operation body 3 is located at the upper locking position 4 when the paddy field 101 is above a predetermined water level. In the state, the water level of paddy field 101 falls to the lowest water level WL, When the funnel 2 is lowered, the driven rack body 5 moves to the upper locking position 4 side of the opening / closing operating body 3 to release the locking of the opening / closing operating body 3, and the unlocking opening / closing operating body 3 is moved to the lower side. When it is dropped and moved to the unlocking position 9, the opening / closing operation arm 7 opens the water supply valve 6 to perform automatic water supply. When the water level W of the paddy field 101 by this water supply rises to the maximum water level WH, the opening / closing operation arm 7 moves and locks the opening / closing operation body 3 to the upper locking position 4, and the water supply valve 6 is closed. Thus, since it is the apparatus 1 which performs automatic water supply using a buoyancy by the change of the water level W, it does not require a separate power source and is excellent in maintainability.

  Thus, in this embodiment, corresponding to claim 2, the float 2 is moved up and down by the fluctuation of the water level W of the paddy field 101, and the gear 17 is rotated by the vertical movement of the float 2. The driven rack body 5 which is a locking release means moves forward and backward by the rotation of 17, and the water supply valve 6 includes a sub valve 25 and a main valve 26 which opens and closes by opening and closing the sub valve 25, and the water supply valve opening and closing means is the sub valve 25. The opening / closing operation arm 7 is connected to the opening / closing operation unit 25A and operates the opening / closing operation unit 25A. The opening / closing operation body locking means 8 is provided at the tip of the opening / closing operation arm 7 and is moved up and down by the fluctuation of the water level W of the paddy field 101. Since the valve opening / closing float 27 and the opening / closing operation body 3 and the through hole 24 which is the engaging portion of the opening / closing operation arm 7 are provided, when the paddy field 101 is at a predetermined water level W or higher, the opening / closing operation body 3 is In this state, the water level W of the paddy field 101 is lowered to the lowest water level WL. , The float 2 is lowered, the gear 17 is rotated in one direction, the driven rack member 5 that meshes with the gear 17 to release the engagement proceeds to the upper locking position 4 of the opening and closing member 3. On the other hand, when the float 2 rises, the gear 17 rotates in the other direction, and the driven rack body 5 moves backward.

  Further, the opening / closing operation arm 7 is rotated by the vertical movement of the valve opening / closing float 27 to open / close the sub valve 25. By opening / closing the sub valve 25, the main valve 26 larger than the sub valve 25 is opened / closed. A large amount of water can be efficiently supplied. In particular, since the valve body 35 is moved and opened by the pressure difference in the pressure receiving body accommodating chamber 38 by flowing the water by opening the sub valve 25, the large main valve 26 can be opened and closed with a small force, A reliable open / closed state is obtained.

  Further, when the opening / closing operation arm 7 is turned upward by the lift of the valve opening / closing float 27, the opening / closing operation body 3 engaged with the opening / closing operation arm 7 can be moved to the upper locking position 4 and locked.

  Further, as an effect on the embodiment, the water supply valve 6 opens and closes by moving the valve body 35 due to a pressure difference in the pressure receiving body accommodating chamber 38 by opening the sub valve 25 and flowing water. The large main valve 26 can be opened and closed with a small force, and a reliable opening and closing state can be obtained. Further, since the opening / closing operation body 3 is provided with the weight 23 for rotating the opening / closing operation body 3 around the through hole 24 in the direction in which the engagement portion 22 is engaged, the engagement can be reliably performed. . Further, the guide member 28 is provided with insertion holes 29 and 29 in the vertical direction. Since the opening / closing operation arm 7 is inserted into the through holes 24 which are engaging portions with the insertion holes 29 and 29, the guide member 28 is guided by the insertion holes 29 and 29. Thus, the opening / closing operation body 3 moves up and down smoothly, and the insertion holes 29, 29 serve as guide means for guiding the up-down movement of the opening / closing operation body 3.

  FIG. 6 shows a second embodiment of the present invention. The same reference numerals are given to the same parts as those in the first embodiment, and detailed description thereof will be omitted. In this example, the pressure receiving body 40 has an orifice 43. The inflow chamber 32 and the one chamber 38A are connected by a dynamic pressure passage 61, and a pressure drop orifice 62 is provided in the middle of the dynamic pressure passage 61. Therefore, when the sub valve 25 is opened, water flows through the dynamic pressure passage 61 to the inflow chamber 32 and the one chamber 38A, one chamber 38A has a lower pressure than the other chamber 38B, and the valve body 35 is connected to the valve port 34. The main valve 26 opens.

  As mentioned above, although the Example of this invention was explained in full detail, this invention is not limited to the said Example, A various deformation | transformation implementation is possible within the range of the summary of this invention.

It is a partially notched front view in the highest water level which shows Example 1 of this invention. It is a partially cutaway front view at the lowest water level. It is a side view in the lowest water level as above. It is sectional drawing of a water supply valve same as the above. It is sectional drawing of a paddy field same as the above. It is sectional drawing of the water supply valve which shows Example 2 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Paddy field automatic water supply apparatus 2 Float 3 Opening / closing operation body 4 Upper side locking position 4A Corner | angular part 5 Driven rack body (locking release means)
6 Water supply valve 7 Opening / closing operation arm (Water supply valve opening / closing means)
8 Opening / closing operation body locking means 9 Lower locking release position
11 Rotating arm
12 Pivot
14 Lifting rack body
17 Gear
22 Locking part
25 Secondary valve
25A Open / close operation section
26 Main valve
27 Float for valve opening / closing
101 Paddy field W Water level WH High water level WL Low water level

Claims (2)

In a paddy field automatic water supply device that automatically feeds water according to fluctuations in the water level of the paddy field, a float that moves up and down due to fluctuations in the water level of the paddy field, and a lowering of the float moves to the upper locking position side of the opening and closing operation body to lock the locking. The unlocking means for releasing and the open / close operating body dropping from the upper locking position to the lower locking releasing position opens the water supply valve and closes the water supply valve at the upper locking position. An automatic water supply apparatus for paddy fields, comprising: a water supply valve opening / closing means for opening and an opening / closing operation body locking means for moving the opening / closing operation body to the upper locking position when the water level of the paddy field rises. A float that moves up and down due to fluctuations in the water level of the paddy field, and a gear that rotates as the float moves up and down, and the locking release means advances and retreats by the rotation of the gear. A main valve that opens and closes by opening and closing the valve, and the water supply valve opening and closing means is an opening and closing operation arm that is connected to the opening and closing operation part of the sub-valve and operates the opening and closing operation part, The valve opening / closing float provided at the tip of the opening / closing operation arm and moving up and down by fluctuations in the water level of the paddy field, and an engaging portion of the opening / closing operation body and the opening / closing operation arm. Paddy field automatic water supply equipment.

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