JP7015196B2 - Automatic water supply shutoff device for the field and drainage automatic shutoff device from the field - Google Patents

Description

The present invention relates to an automatic water supply shutoff device that automatically shuts off a water supply channel to a field, and an automatic drainage shutoff device that automatically shuts off a drainage channel from a field.

Conventionally, there has been an automatic water stop for a pipe canal that automates the water stoppage when water is supplied from the water canal to a paddy field (see, for example, Patent Document 1). As shown in FIG. 14, the automatic water stop device 31 for a water pipe has an intake pipe 32 provided with a valve port 32a, a discharge pipe 33 for guiding water from the intake pipe 32 to a paddy field 30, and an intake pipe 32. The valve 34 provided inside, the valve rod 35 fixed to the valve 34, the spring 36 for urging the valve 34 toward the valve opening 32a via the valve rod 35, and the valve opening 32a were opened. In the state, it was provided with a locking pin 37 that engages with the adjusting groove 35a provided in the valve rod 35. Further, the automatic water stop device 31 for a pipe channel is provided with a water level gauge for detecting the water level of the paddy field 30, and the water level gauge includes a float 38 floating on the paddy field 30, a screw rod 39 extending upward from the float 38, and a screw rod 39 thereof. It was provided with an adjusting nut 40 screwed into a screw rod 39, a support 41 erected on the shore 30a of the paddy field 30, and a lever 42 pivotally supported by the support 41 and swinging. Here, one end of the lever 42 and the locking pin 37 were connected by a wire 43, and the other end of the lever 42 was supported by the adjusting nut 40. Therefore, when the water level rises by supplying water to the paddy field 30, the float 38 rises, the lever 42 is pushed up by the adjusting nut 40 and rotates, and the lever 42 pulls the wire 43 and the locking pin 37. Was removed from the adjusting groove 35a, and the valve opening 32a was closed.

Japanese Unexamined Patent Publication No. 10-195856

However, in the conventional automatic water stop device 31 for pipes, the water level gauge is left in the paddy field 30 even during the period when the water is not supplied to the paddy field 30, so that the water level gauge is left in the paddy field 30 at the next use. It was troublesome because there was a risk that the water level gauge would not operate normally and maintenance was required to prevent it.

The present invention has been made to solve the above-mentioned conventional drawbacks, and an object thereof is an automatic water supply shutoff device for a field and an automatic drainage from the field, which can reduce maintenance work. The purpose is to provide a breaking device.

The automatic water supply shutoff device for a field and the automatic drainage shutoff device for a field according to the present invention have the following configurations in order to achieve the above object. That is,
The water supply automatic shutoff device for a field according to the invention according to claim 1 is a water supply automatic shutoff device that automatically shuts off the water supply channel to the field, and is detachably installed in the field and the water level in the field. It is provided with a water level gauge unit that detects a rise to a predetermined water level and a valve body unit installed in the water supply channel. Here, the valve body unit includes a valve body that opens and closes the water supply channel, and a closed position moving means that moves the valve body from an open position that opens the water supply channel to a closed position that closes the water supply channel. Then, between the water level gauge unit and the valve body unit, the transmitter that transmits the detection of the predetermined water level by the water level gauge unit and the closed position based on the detection of the predetermined water level transmitted from the transmitter. An operation indicator for operating the moving means is provided. Therefore, the water level gauge unit and the valve body unit are between the water level gauge unit and the transmission body, an intermediate portion of the transmission body, between the transmission body and the operation instruction body, or the operation instruction body. And the valve body unit are separably connected , and by disconnecting the connection, the water level gauge unit can be separated from the valve body unit, and the water level gauge unit can be removed from the field. Is .

According to this automatic water supply shutoff device for the field, the water level gauge unit is installed in the field, and the valve body unit is installed in the water supply channel to the field. Here, when the valve body in the valve body unit is located at the open position, the water supply channel is opened, and water flows into the field through the water supply channel. Then, when the water level in the field rises to a predetermined water level, the water level gauge unit detects the rise, and the transmitter transmits the detection to the operation indicator. The operation indicator activates the closed position moving means based on the detection, and the valve body moves from the open position to the closed position. When the water supply channel is blocked by the valve body, the inflow of water into the field is stopped, and the water level in the field remains at a predetermined water level. Here, the automatic water supply shutoff device can be separated between the water level gauge unit and the transmitter, the middle part of the transmitter, between the transmitter and the operation indicator, or between the actuation indicator and the valve body unit. Is linked to. Therefore, by disconnecting the connection, the water level gauge unit can be separated from the valve body unit, and the water level gauge unit can be removed from the field. Therefore, the water level gauge unit can be left in the storage place when the water level gauge unit is taken to another field for use or when water is not supplied to the field.

Further, the automatic water supply shutoff device for the field according to the second aspect of the present invention is the automatic water supply shutoff device according to the first aspect, wherein the water level gauge unit and the valve body unit are the operation indicator and the said. It is separably connected to the valve body unit. The valve body unit is provided with an open position holding means for holding the valve body in the open position in a state where the operation indicator is separated from the valve body unit. Thereby, by disconnecting the connection between the operation indicator and the valve body unit, the transmitter and the operation indicator can be separated from the valve body unit together with the water level gauge unit, and they can be removed from the field. As described above, even when the transmitter and the operation indicator are removed from the field together with the water level gauge unit, the valve body unit is provided with the open position holding means. Therefore, the valve body is provided by the open position holding means. Can be held in the open position to supply water from the water supply channel to the field, and by releasing the open position holding means, the valve body can be moved to the closed position and the water supply to the field can be stopped. ..

Further, the automatic water supply shutoff device for the field according to the third aspect of the present invention is the automatic water supply shutoff device according to claim 2, wherein the open position holding means has a cover portion, and the cover portion is a cover portion. When the valve body is held in the open position by the open position holding means, the connected portion of the valve body unit to which the operation instruction body is connected is covered so that the operation instruction body cannot be connected.

Further, the automatic water supply shutoff device for the field according to the invention according to claim 4 is the automatic water supply shutoff device according to any one of claims 1 to 3, wherein the transmitter is arranged in an outer tube. The inner wire is provided, and the inner wire operates so as to be pulled into the water level gauge unit side by detecting a predetermined water level by the water level gauge unit. The closed position moving means includes an urging member that urges the valve body to move from the open position to the closed position, and an acting member that interlocks with the valve body, and the acting member is interlocked with the urging member. The valve body is located in the open position when is located in the first position, and the valve body is located in the closed position when the working member is located in the second position. The operation indicator includes an indicator body and an indicator case that slidably accommodates the indicator body and is detachably attached to the valve body unit, and the valve body unit of the indicator case. By attaching to the water level gauge unit and the valve body unit, the operation indicator unit and the valve body unit are separably connected to each other. Then, the indicator body is set to a forward position in which the locking portion provided at the tip protrudes from the indicator case and comes into contact with the working member by the slide, and a retracting position in which the locking portion refrains from the acting member. When the working member is movable and the acting member is located at the first position and the indicator body is located at the advancing position, the locking portion engages with the locked portion provided on the working member. Then, the working member is held in the first position and the valve body interlocking with the working member is held in the open position. Further, the indicator body has a wire connecting portion to which the inner wire is connected on the rear end side, and the inner wire is pulled toward the water level gauge unit side so that the indicator body is in the forward position. To the retracted position, the engaging portion is disengaged from the locked portion, and the urging member moves the acting member from the first position to the second position. At the same time, the valve body interlocking with the working member moves from the open position to the closed position.

Further, the automatic water supply shutoff device for the field according to the fifth aspect of the present invention is the automatic water supply shutoff device according to the fourth aspect, wherein the indicator main body has a locking member having the locking portion and the locking member. A connecting member having a wire connecting portion and a first urging means are provided. Here, the locking member can slide with respect to the connecting member in the same direction as the sliding direction of the indicator body. The first urging means urges the locking member toward the acting member with respect to the connecting member. Then, the locking member is provided with a facing surface so as to prevent the locking member that has moved toward the working member with respect to the connecting member from coming out of the connecting member, and the connecting member is provided with a facing surface. Is provided with a facing surface that abuts on the facing surface.

Further, the automatic water supply shutoff device for the field according to the invention according to claim 6 is the automatic water supply shutoff device according to claim 5, wherein the operation indicator has the indicator body with respect to the indicator case. A second urging means for urging the working member side is provided.

Further, in the water supply automatic shutoff device according to claim 7, the urging force of the first urging means is the urging force of the second urging means in the water supply automatic shutoff device according to claim 6. It is greater than the force of the means.

Further, the automatic drainage shutoff device for drainage from a field according to the invention according to claim 8 is an automatic drainage shutoff device that automatically shuts off a drainage channel from a field, and is detachably installed in the field and inside the field. A water level gauge unit that detects a drop of the water level to a predetermined water level and a valve body unit installed in the drainage channel are provided. Here, the valve body unit includes a valve body that opens and closes the drainage channel, and a closed position moving means that moves the valve body from an open position that opens the drainage channel to a closed position that closes the drainage channel. Then, between the water level gauge unit and the valve body unit, the transmitter that transmits the detection of the predetermined water level by the water level gauge unit and the closed position based on the detection of the predetermined water level transmitted from the transmitter. An operation indicator for operating the moving means is provided. Therefore, the water level gauge unit and the valve body unit are between the water level gauge unit and the transmission body, an intermediate portion of the transmission body, between the transmission body and the operation instruction body, or the operation instruction body. And the valve body unit are separably connected , and by disconnecting the connection, the water level gauge unit can be separated from the valve body unit, and the water level gauge unit can be removed from the field. Is .

According to the automatic drainage shutoff device from the field, the water level gauge unit is installed in the field, and the valve body unit is installed in the drainage channel from the field. Here, when the valve body in the valve body unit is located at the open position, the drainage channel is opened, and water flows out from the field through the drainage channel. Then, when the water level in the field drops to a predetermined water level, the water level gauge unit detects the drop, and the transmitter transmits the detection to the operation indicator. The operation indicator activates the closed position moving means based on the detection, and the valve body moves from the open position to the closed position. When the drainage channel is blocked by the valve body, the outflow of water from the field is stopped, and the water level in the field remains at a predetermined water level. Here, the automatic drainage shutoff device can be separated between the water level gauge unit and the transmission body, the middle part of the transmission body, between the transmission body and the operation indicator, or between the operation instruction body and the valve body unit. Is linked to. Therefore, by disconnecting the connection, the water level gauge unit can be separated from the valve body unit, and the water level gauge unit can be removed from the field. Therefore, the water level gauge unit can be left in the storage place at a time when the water level gauge unit is taken to another field for use or when drainage from the field is not performed.

According to the automatic water supply shutoff device for the field and the automatic drainage shutoff device for the field according to the present invention, the water level gauge unit is separated from the valve body unit at the time when the water supply to the field or the drainage from the field is not performed. However, the water level gauge unit can be removed from the field and stored, thereby preventing damage to the water level gauge unit and maintaining the water supply automatic shutoff device and drainage automatic shutoff device including this water level gauge unit. It is possible to reduce the trouble of.

It is a perspective view of the water supply automatic shutoff device of one Embodiment of this invention. Similarly, it is a perspective view from above of the water level gauge unit. Similarly, it is a perspective view from the bottom of the water level gauge unit. Similarly, it is a cross-sectional view of the water level gauge unit before the float rises. Similarly, it is a cross-sectional view of the water level gauge unit when the float rises. Similarly, it is a perspective view of a float. Similarly, it is an enlarged perspective view of the detection member. Similarly, it is a front view of the valve body unit. Similarly, it is a cross-sectional view of a valve body unit. Similarly, it is sectional drawing which the operation indicator is connected to the valve body unit, and the valve body is in an open position. Similarly, it is sectional drawing which the operation indicator is connected to the valve body unit, and the valve body is in a closed position. Similarly, it is sectional drawing which the valve body is in an open position by the open position holding means in a valve body unit. Similarly, it is a perspective view of the indicator body. It is sectional drawing which shows the conventional automatic water stop device for a pipe canal.

Hereinafter, a mode for implementing the automatic water supply shutoff device for the field and the automatic drainage shutoff device from the field according to the present invention will be described with reference to the drawings.

1 to 13 show an embodiment of an automatic water supply shutoff device for a field according to the present invention. Reference numeral 1 in the figure indicates a field such as a paddy field. Reference numeral 2 indicates a water supply channel to the field 1. 3 indicates an automatic water supply shutoff device that automatically shuts off the water supply channel 2.

The water supply automatic shutoff device 3 includes a water level gauge unit 4 installed in the field 1 (specifically, removablely installed) and a valve body unit 5 installed in the water supply channel 2.

Here, the water level gauge unit 4 detects a rise in the water level in the field 1 to a predetermined water level. Specifically, the water level gauge unit 4 positions the heights of the water level gauge main body 6, the float 7 floating on the water surface in the field 1, and the water level gauge main body 6 from the soil surface 1a in the field 1 (for details, refer to. The water level gauge main body 6 is provided with a positioning unit 8 (which positions the height of the water level gauge main body 6 in an adjustable manner), and the water level gauge main body 6 positioned by the positioning unit 8 receives an increase in the float 7 due to an increase in the water level in the field 1. The water level in the field 1 is detected to rise to a predetermined water level (FIG. 4 shows the water level gauge unit 4 before the float 7 rises, and FIG. 5 shows the water level gauge unit 4 when the float 7 rises. Shows). Further, the water level gauge unit 4 has a fixed pile 9 which is driven and fixed to the driving surface 1b in a state where a part of the water level gauge unit 4 protrudes from the driving surface 1b of the field 1, and the positioned water level gauge main body 6 is attached to the fixed pile 9. A fixing means 10 for fixing is provided.

The valve body unit 5 includes a valve body 11 that opens and closes the water supply channel 2, and the valve body 11 is in an open position that opens the water supply channel 2 based on the detection of a predetermined water level by the water level gauge unit 4 (see FIG. 10). Moves from to the closed position (see FIG. 11) to close. Specifically, the valve body unit 5 includes a valve body 11 that opens and closes the water supply channel 2, and a closed position moving means 12 that moves the valve body 11 from an open position that opens the water supply channel 2 to a closed position that closes the water supply channel 2. Be prepared. Then, between the water level gauge unit 4 and the valve body unit 5, the transmitter 13 that transmits the detection of the predetermined water level by the water level gauge unit 4 and the transmitter 13 that transmits the detection of the predetermined water level transmitted from the transmitter 13 are closed. An operation indicator 14 for operating the position moving means 12 is provided.

Therefore, the water level gauge unit 4 and the valve body unit 5 are used between the water level gauge unit 4 and the transmission body 13, an intermediate portion of the transmission body 13, between the transmission body 13 and the operation indicator body 14, or the operation indicator body 14. And the valve body unit 5 are separably connected. In the illustrated embodiment, the water level gauge unit 4 and the valve body unit 5 are separably connected between the operation indicator unit 14 and the valve body unit 5.

Further, the valve body unit 5 includes an open position holding means 15 that holds the valve body 11 in the open position in a state where the operation indicating body 14 is separated from the valve body unit 5. The open position holding means 15 has a covering portion 15a, and when the opening position holding means 15 holds the valve body 11 in the open position, the operation indicating body 14 in the valve body unit 5 receives the operation indicating body 14. The connected portion 5a to be connected is covered so that the operation indicator 14 cannot be connected.

Specifically, in the water level gauge unit 4, the water level gauge main body 6 includes a water level gauge case 61 and a detection member 62 housed in the water level gauge case 61. The detection member 62 is slidably supported in the water level gauge case 61 in the lateral direction (horizontal direction in FIGS. 4 and 5). Then, as shown in FIG. 7, the detection member 62 is provided with a guide hole 62a which is composed of an elongated hole and whose longitudinal direction is inclined. Further, the detection member 62 has a wire connecting portion 62b to which an inner wire 13b, which will be described later, is drawn into the water level gauge case 61. The outer tube 13a described later is supported by the water level gauge case 61.

The float 7 includes a foam 7a and a cover 7b that covers the foam 7a, and is arranged under the water level gauge main body 6. The float 7 includes a pair of upwardly projecting support arms 7c, 7c (see FIG. 6), the support arms 7c, 7c penetrating a hole made in the bottom wall 61a of the water level gauge case 61 to raise the water level. Enter the total case 61. The pair of support arms 7c and 7c are positioned so as to sandwich the detection member 62, and the guide pin 7d is bridged between the pair of support arms 7c and 7c through the guide hole 62a. Therefore, when the float 7 moves up and down with respect to the water level gauge main body 6, the detection member 62 is moved in the lateral direction (in FIGS. 4 and 5) due to the engagement (cam mechanism or link mechanism) between the guide pin 7d and the guide hole 62a. , Left and right).

Further, the float 7 is provided with a through hole 7e that penetrates vertically at the center position. The through hole 7e is a stepped hole having an upper diameter large hole 7f and a lower diameter small hole 7g, and the support arm 7c is formed so as to project from the bottom surface 7h of the large diameter hole 7f.

The positioning portion 8 includes a shaft portion 81 extending downward from the water level gauge main body 6 and a plate-shaped portion 82 provided on the lower end side of the shaft portion 81 and in contact with the soil surface 1a of the field 1. Specifically, the plate-shaped portion 82 can adjust the height position along the axial direction of the shaft portion 81, and by adjusting the height position of the plate-shaped portion 82, from the soil surface 1a. The height of the water level gauge main body 6 is adjusted. The lower end of the shaft portion 81 is formed sharply so as to easily pierce the soil surface 1a.

More specifically, in the shaft portion 81, a plurality of engaged portions 81a, 81a arranged in the axial direction from an intermediate position in the axial direction (vertical direction) of the shaft portion 81, and an arrangement of the engaged portions 81a, 81a. A vertical groove 81b extending parallel to the opposite side of the shaft portion 81 from an intermediate position in the axial direction of the shaft portion 81 to the lower end portion of the shaft portion 81, and an engaged portion 81a from the upper end of the vertical groove 81b. A lateral groove 81c is formed. The plate-shaped portion 82 is substantially disk-shaped and has a notch 82a in a part thereof. Further, the plate-shaped portion 82 is provided with a tubular portion 82b in which the shaft portion 81 is inserted, and the tubular portion 82b is formed with an engaging portion 82c that engages with the engaged portion 81a. Has been done. In the illustrated embodiment, the engaged portions 81a and 81a are formed so as to protrude from the bottom surface recessed from the peripheral surface of the shaft portion 81, and the engaging portion 82c protrudes inward of the tubular portion 82b. It is formed. The engaging portion 82c is provided on the elastic piece 82d that is a part of the tubular portion 82b, and when the elastic piece 82d bends, the engaging portion 82c becomes a plurality of engaged portions 81a, 81a. It can be engaged with any of the engaged portions 81a. Further, the engaged portion 81a and the engaging portion 82c have a slope and an upright surface so that the plate-shaped portion 82 moves downward with respect to the shaft portion 81 but does not move upward. There is. Therefore, in assembling the shaft portion 81 and the plate-shaped portion 82, the tubular portion 82b provided in the plate-shaped portion 82 is shafted by aligning the engaging portion 82c with the vertical groove 81b from below the shaft portion 81. It is fitted in the portion 81, and the plate-shaped portion 82 is moved upward. Then, the plate-shaped portion 82 is rotated around the axis of the shaft portion 81 so that the engaging portion 82c passes through the lateral groove 81c, and the engaging portion 82c is brought to the side where the engaged portion 81a is lined up. Then, by appropriately moving the plate-shaped portion 82 downward with respect to the shaft portion 81, the engaging portion 82c engages with the engaged portion 81a at an arbitrary position.

Further, a mounting hole 82e is formed in the tubular portion 82b provided in the plate-shaped portion 82. Therefore, the plate-shaped portion 82 can be fixed at an arbitrary height position of the shaft portion 81 by screwing a fixing tool such as a screw into the mounting hole 82e and pressing the shaft portion 81 with the fixing tool. In this case, it is not necessary to form the engaged portion 81a on the shaft portion 81, and it is not necessary to form the engaging portion 82c on the tubular portion 82b. Further, the shaft portion 81 is detachably attached to the water level gauge main body 6 (specifically, the water level gauge case 61). Therefore, the shaft portion 81 can be used by exchanging with another shaft portion (for example, a shaft portion having a different length).

The fixing means 10 is provided on the water level gauge main body 6 (specifically, the water level gauge case 61). The fixing means 10 includes a fixing hole 10a opened in the water level gauge case 61 into which the fixing pile 9 is inserted, and a screw hole 10b extending from the inner peripheral surface to the outer surface of the fixing hole 10a (in the illustrated embodiment, the fixing means 10). It is provided with a female screw hole of a nut) and a fixing screw 10c that is screwed into the screw hole 10b to press the fixing pile 9. Therefore, in the water level gauge main body 6 whose height is positioned by the positioning unit 8 and the fixed pile 9 which is driven and fixed to the driving surface 1b of the field 1, the fixed pile 9 is made to pass through the fixing hole 10a. By pressing the fixed stake 9 with the fixing screw 10c, the water level gauge main body 6 is fixed to the fixed stake 9 at the position where the height is positioned, and is eventually fixed to the field 1. In the illustrated embodiment, the fixed pile 9 is driven into the driving surface 1b through the through hole 7i provided in the float 7 and through the notch 82a of the plate-shaped portion 82.

The valve body unit 5 includes a tubular valve body case 16 in addition to the valve body 11, the closed position moving means 12, and the open position holding means 15 described above. The valve body case 16 is formed by bulging the middle of the cylinder, and is composed of a first valve body case 16b and a second valve body case 16c, which are divided by a portion of the bulging portion 16a. The first and second valve body cases 16b and 16c are integrated by adhesion. The valve body case 16 has a valve seat 16d on which the valve body 11 abuts on the first valve body case 16b side of the inner surface of the bulging portion 16a. Further, inside the valve body case 16 (specifically, the first valve body case 16b), a first tubular portion 16e extending in the axial direction of the valve body case 16 is provided, and further, a peripheral wall of the valve body case 16 and a first cylinder. A second cylinder portion 16f is provided to connect the first cylinder portion 16e. The peripheral wall side of the valve body case 16 opens to the outside of the second cylinder portion 16f, and the inside of the second cylinder portion 16f becomes the connected portion 5a to which the operation instruction body 14 is connected. A female screw 16h is provided on the inner peripheral surface of the second cylinder portion 16f, and the first cylinder portion 16e has a hole 16i so as to communicate the inside of the first cylinder portion 16e and the inside of the second cylinder portion 16f. Is open. Further, the valve body case 16 (specifically, the first valve body case 16b) is provided with support arm portions 16j and 16j for connecting the peripheral wall thereof and the first cylinder portion 16e and supporting the first cylinder portion 16e. ..

By the way, the valve body case 16 is connected to the water supply pipe 201 forming the water supply channel 2 on the side of the second valve body case 16c. Therefore, the water flowing into the valve body case 16 from the opening on the second valve body case 16c side through the water supply pipe 201 is between the support arm portions 16j and 16j, or between the support arm portions 16j and the second cylinder portion 16f. Through, it flows out from the opening on the first valve body case 16b side.

The valve body 11 is formed in a disk shape and is housed in a bulging portion 16a in the valve body case 16. The peripheral edge of the valve body 11 is formed by being bent diagonally toward the second valve body case 16c, and the bent portion abuts on the valve seat 16d (see FIGS. 9 and 11).

The closed position moving means 12 includes an urging member 17 that urges the valve body 11 to move from the open position to the closed position, and an acting member 18 that interlocks with the valve body 11, and the acting member 18 is interlocked with the urging member 18. The valve body 11 is located in the open position when is located in the first position (see FIGS. 10 and 12), and the valve body 11 is located in the closed position when the working member 18 is located in the second position. (See FIGS. 9 and 11).

The working member 18 is integrated with the valve body 11 in the illustrated embodiment. Specifically, the working member 18 is fixed to a shaft body 18a formed by extending in a columnar shape from the central portion of the valve body 11 and to the tip of the shaft body 18a (specifically, fixing using a screw 18b). It consists of a knob 18c. The working member 18 has a shaft body 18a inserted into the first cylinder portion 16e of the valve body case 16 and has a first position (see FIGS. 10 and 12) and a second position (see FIGS. 12) along the first cylinder portion 16e. 9. It is possible to slide to (see FIG. 11). Further, the shaft body 18a has a large diameter on the valve body 11 side and a small diameter on the knob 18c side, and the stepped portion of the boundary portion thereof becomes the locked portion 18d described later.

The urging member 17 is formed of a coil spring and is inserted into the first cylinder portion 16e of the valve body case 16 so as to be fitted to the shaft body 18a (specifically, the smaller diameter side of the shaft body 18a) of the working member 18. To. The urging member 17 is located between the receiving portion 16k (see FIG. 9) protruding from the inner surface of the first cylinder portion 16e and the knob 18c in the first cylinder portion 16e, that is, the knob 18c, that is, the acting member. The valve body 11 interlocking with the working member 18 (integrated in the illustrated embodiment) moves from the open position to the closed position while encouraging the 18 to move from the first position to the second position. Encourage them to do so.

The open position holding means 15 includes the working member 18 and an engaging convex portion 16m provided on the outer peripheral portion of the valve body case 16 (specifically, the first valve body case 16b). Here, the knob 18c constituting the working member 18 extends laterally from the knob body 18e fixed to the shaft body 18a and the knob body 18e, and further extends to the valve body case 16 (specifically, the first valve body case). A lever portion 18f that bends and extends so as to face the outer peripheral surface of 16b) is provided (see FIG. 1). An engaging recess 18g is provided on the inner surface of the lever portion 18f. Therefore, the knob body 18e is pushed in so that the working member 18 moves from the second position (see FIGS. 8 and 9) to the first position, and then the knob body 18e is rotated around the axis of the first cylinder portion 16e. As a result, the engaging concave portion 18g can be engaged with the engaging convex portion 16m to hold the working member 18 in the first position, that is, the valve body 11 can be held in the open position (see FIG. 12). The tip end side of the lever portion 18f becomes the covering portion 15a, and as described above, when the valve body 11 is held in the open position by the open position holding means 15, the covering portion 15a connects the connected portion 5a. , Cover the operation indicator 14 so that it cannot be connected.

The transmitter 13 includes an inner wire 13b arranged in the outer tube 13a, and the inner wire 13b is the inner wire 13b by detecting a predetermined water level by the water level gauge unit 4 (sliding of the detection member 62 in the illustrated embodiment). It operates so as to be pulled into the water level gauge unit 4 side.

The operation indicator 14 includes an indicator body 19 and an indicator case 20 that slidably accommodates the indicator body 19 and is detachably attached to the valve body unit 5. By attaching to the valve body unit 5, the water level gauge unit 4 and the valve body unit 5 are separably connected between the operation indicator unit 14 and the valve body unit 5. Specifically, the indicator case 20 is provided with a male screw 20a on the outer peripheral surface thereof, and the operation instruction is given by screwing the male screw 20a into the female screw 16h in the second cylinder portion 16f (that is, the connected portion 5a). The body 14 is attached to the valve body unit 5.

In the indicator body 19, the locking portion 19a provided at the tip of the indicator body 19 projects from the indicator case 20 (specifically, the hole 20c formed in the front wall 20b of the indicator case 20) by the slide (see FIG. 4). , The forward position where the locking portion 19a abuts on the working member 18 (specifically, the shaft body 18a) through the hole 16i provided in the first tubular portion 16e, and the retracting portion 19a refrains from the acting member 18 (specifically, the shaft body 18a). When the working member 18 is located at the first position and the indicator body 19 is located at the forward position, the locking portion 19a is provided on the working member 18 (specifically, the shaft body 18a). Engaging with the locked locked portion 18d, the working member 18 is held in the first position, and the valve body 11 interlocking with the working member 18 is held in the open position (see FIG. 10).

Further, the indicator body 19 has a wire connecting portion 19b to which the inner wire 13b is connected on the rear end side, and the inner wire 13b is pulled into the water level gauge unit 4 side, so that the indicator body 19 advances. Moving from the position to the retracted position, the locking portion 19a is disengaged from the locked portion 18d, and the acting member 18 moves from the first position to the second position due to the urging of the urging member 17. At the same time, the valve body 11 interlocking with the working member 18 moves from the open position to the closed position (see FIG. 11). In the illustrated embodiment, since the indicator body 19 is housed in the indicator case 20, the inner wire 13b passes through the hole 20e formed in the rear wall 20d of the indicator case 20 to indicate the indicator. It is pulled into the case 20 and connected to the wire connection portion 19b of the indicator body 19. The outer tube 13a is supported by the indicator case 20.

Specifically, as shown in FIG. 13, the indicator body 19 includes a locking member having the locking portion 19a, a connecting member 19d having the wire connecting portion 19b, and a first urging means. It is equipped with a coil spring 19e. Therefore, the locking member 19c can slide with respect to the connecting member 19d in the same direction as the sliding direction of the indicator body 19, and the first coil spring 19e acts on the connecting member 19d with the locking member 19c. It is urged toward the member 18 (specifically, the shaft body 18a) (that is, toward the front). Then, the locking member 19c is opposed to the locking member 19c so as to prevent the locking member 19c that has moved toward the acting member 18 (specifically, the shaft body 18a) from the connecting member 19d. A surface 19f is provided, and the connecting member 19d is provided with a facing surface 19g that abuts on the surface to be opposed 19f.

More specifically, the locking member 19c includes the locking portion 19a formed in a columnar shape and the flange portion 19h formed behind the locking portion 19a, and the front surface of the flange portion 19h is formed. It becomes the facing surface 19f. The connecting member 19d includes the wire connecting portion 19b formed in a columnar shape, a flange portion 19i formed in front of the wire connecting portion 19b, and a ring portion 19j located in front of the flange portion 19i. A band-shaped connecting piece 19k and 19k connecting the collar portion 19i and the ring portion 19j are provided. Therefore, the rear surface of the ring portion 19j becomes the facing surface 19g. That is, in the locking member 19c, the locking portion 19a is inserted into the ring portion 19j from the rear to the front, and the facing surface 19f at the flange portion 19h of the locking member 19c and the ring portion 19j of the connecting member 19d are inserted. The facing surface 19g is opposed to the facing surface 19g. Then, the first coil spring 19e is fitted between the flange portion 19h of the locking member 19c and the flange portion 19i of the connecting member 19d, and is urged (specifically, elastic urging) so as to separate them. ..

Further, the operation indicator 14 is a second coil spring as a second urging means for urging the indicator body 19 toward the acting member 18 (specifically, the shaft body 18a) with respect to the indicator case 20. 21 is provided. That is, the second coil spring 21 urges the inner wire 13b toward the working member 18 (specifically, the shaft body 18a), and is arranged in the outer tube 13a by this urging. The play of the inner wire 13b can be removed. The second coil spring 21 is housed between the rear wall 20d of the indicator case 20 and the flange portion 19i of the connecting member 19d, and is urged so as to separate them (specifically, elastic urging). do. Then, the urging force of both is set so that the urging force of the first coil spring 19e is larger than the urging force of the second coil spring 21.

Next, the operation and effect of the water supply automatic shutoff device 3 having the above configuration will be described. According to the water supply automatic shutoff device 3, the water level gauge unit 4 is installed in the field 1, and the valve body unit 5 is installed in the water supply channel 2 to the field 1. Here, when the valve body 11 in the valve body unit 5 is located at the open position, the water supply channel 2 is opened, and water flows into the field 1 through the water supply channel 2.

Then, when the water level in the field 1 rises to a predetermined water level, the water level gauge unit 4 detects the rise (that is, the predetermined water level), and the transmitter 13 transmits the detection to the operation indicator 14. The operation instruction body 14 operates the closed position moving means 12 based on the detection, and the valve body 11 moves from the open position to the closed position. Specifically, the inner wire 13b constituting the transmitter 13 is pulled toward the water level gauge unit 4 by detecting a predetermined water level by the water level gauge unit 4 (sliding of the detection member 62 in the illustrated embodiment). Operate. In this way, the inner wire 13b is pulled toward the water level gauge unit 4, so that the indicator body 19 in the operation indicator 14 moves from the forward position to the retracted position and engages with the locked portion 18d (acting member 18). The stop portion 19a (indicator body 19) is disengaged, and the acting member 18 (closed position moving means 12) is moved from the first position to the second position by the urging of the urging member 17 (closed position moving means 12). The valve body 11 interlocking with the working member 18 moves from the open position to the closed position. Simply put, when the water level in the field 1 rises to a predetermined water level, the water level gauge unit 4 detects the rise, and the valve body 11 moves from the open position to the closed position based on the detection. When the water supply channel 2 is blocked by the valve body 11, the inflow of water into the field 1 is stopped, and the water level in the field 1 remains at a predetermined water level.

Here, in the water supply automatic shutoff device 3, the water level gauge unit 4 and the valve body unit 5 are between the water level gauge unit 4 and the transmission body 13, an intermediate portion of the transmission body 13, the transmission body 13 and the operation indicator body 14. Between, or between the actuation indicator 14 and the valve body unit 5 (in the illustrated embodiment, between the actuation indicator 14 and the valve body unit 5), they are separably connected. Therefore, by disconnecting the connection, the water level gauge unit 4 can be separated from the valve body unit 5, and the water level gauge unit 4 can be removed from the field 1. Therefore, the water level gauge unit 4 can be left in the storage place when the water level gauge unit 4 is taken to another field 1 for use or when water is not supplied to the field 1. That is, according to the water supply automatic shutoff device 3, the water level gauge unit 4 is separated from the valve body unit 5 and the water level gauge unit 4 is removed from the field 1 when water is not supplied to the field 1. It can be stored, thereby preventing damage to the water level gauge unit 4 and reducing the time and effort required for maintenance of the water supply automatic shutoff device 3 including the water level gauge unit 4.

Moreover, the water level gauge unit 4 and the valve body unit 5 are separably connected between the operation indicator unit 14 and the valve body unit 5. Therefore, when the connection is disconnected, the transmission body 13 and the operation indicator unit 14 are separated from the valve body unit 5 together with the water level gauge unit 4, and the water level gauge unit 4, the transmission body 13, and the operation indicator unit 14 are put together. It can be removed from the field 1. In this way, the transmitter 13 and the actuation indicator 14 can be removed from the field 1 and stored together with the water level gauge unit 4, thereby damaging not only the water level gauge unit 4 but also the transmitter 13 and the actuation indicator 14. By preventing this, it is possible to further reduce the time and effort required for maintenance of the water supply automatic shutoff device 3. Further, even when the transmitter 13 and the operation indicator 14 are removed from the field 1 together with the water level gauge unit 4, the valve body unit 5 includes the open position holding means 15, so that the open position thereof is provided. The holding means 15 can hold the valve body 11 in the open position and supply water from the water supply channel 2 to the field 1, and by releasing the open position holding means 15, the valve body 11 is moved to the closed position. It is possible to stop the water supply to the field 1.

Further, the water level gauge unit 4 includes a water level gauge main body 6, a float 7, and a positioning unit 8. Therefore, the height of the water level gauge main body 6 from the soil surface 1a in the field 1 is positioned by the positioning unit 8. Further, the water level gauge unit 4 includes a fixed pile 9 to be driven into the driving surface 1b of the field 1 and a fixing means 10, and the positioned water level gauge main body 6 is fixed to the fixed pile 9 by the fixing means 10. Will be done. Then, the water level gauge main body 6 receives the rise of the float 7 due to the rise of the water level in the field 1, and detects the rise of the water level in the field 1 to a predetermined water level. That is, according to the water supply automatic shutoff device 3, the water level gauge unit 4 is provided with a positioning unit 8 for positioning the height of the water level gauge main body 6 from the soil surface 1a in the field 1, so that the water surface in the field 1 is provided. The predetermined height can be easily obtained.

Further, at this time, since the amount of the fixed pile 9 to be driven into the driving surface 1b can be arbitrarily set, the fixed pile 9 can be driven as much as necessary according to the state of the driving surface 1b, and is fixed to the fixed pile 9. With the means 10, the water level gauge main body 6 can be firmly fixed to the driving surface 1b.

Further, the positioning unit 8 adjustably positions the height of the water level gauge main body 6 from the soil surface 1a. In this way, the water level in the field 1 can be adjusted by adjusting the height of the water level gauge main body 6 from the soil surface 1a by the positioning unit 8.

The present invention is not limited to the above-described embodiment, and various other modifications can be made. For example, in the water supply automatic shutoff device 3, the water level gauge unit 4 and the valve body unit 5 are separably connected between the operation indicator unit 14 and the valve body unit 5, but in addition, the water level gauge unit 4 It may be separably connected between the transmitter 13 and the transmitter 13, an intermediate portion of the transmitter 13, or between the transmitter 13 and the operation indicator 14.

Further, the valve body unit 5 includes the open position holding means 15, but the open position holding means 15 may not be provided.

Further, the positioning unit 8 in the water level gauge unit 4 does not adjustably position the height of the water level gauge main body 6 from the soil surface 1a, even if the positioning height is fixed to a constant value. good.

Further, the driving surface 1b into which the fixed pile 9 is driven in the field 1 is not limited to the soil surface 1a in the field 1, and may be a ridge or the like in the field 1.

Further, the indicator body 19 in the operation indicator 14 includes a locking member 19c, a connecting member 19d, and a first coil spring 19e, but the locking member 19c and the connecting member 19d are provided without the coil spring 19e. And may be integrally formed.

Further, the water supply automatic shutoff device 3 shown above automatically shuts off the water supply channel 2 to the field 1, but this device is applied to a drainage automatic shutoff device that automatically shuts off the drainage channel from the field 1. can do. That is, the valve body unit 5 is installed in the drainage channel. Then, in the water level gauge unit 4 installed in the field 1 (specifically, the water level gauge unit 4 is removablely installed), for example, by reversing the inclination direction of the guide hole 62a of the detection member 62, the water level gauge unit 4 is installed. , It is possible to detect a drop of the water level in the field 1 to a predetermined water level. Specifically, the water level gauge unit 4 positions the heights of the water level gauge main body 6, the float 7 floating on the water surface in the field 1, and the water level gauge main body 6 from the soil 1a surface in the field 1 (for details, refer to. The water level gauge main body 6 is provided with a positioning unit 8 (which positions the height of the water level gauge main body 6 in an adjustable manner), and the water level gauge main body 6 positioned by the positioning unit 8 receives a descent of the float 7 due to a descent of the water level in the field 1. Then, the drop of the water level in the field 1 to a predetermined water level is detected. The valve body unit 5 includes a valve body 11 that opens and closes the drainage channel, and the valve body 11 is closed from an open position that opens the drainage channel based on the detection of a predetermined water level by the water level gauge unit 4. Move to. Specifically, the valve body unit 5 includes a valve body 11 that opens and closes the drainage channel, and a closed position moving means 12 that moves the valve body 11 from an open position that opens the drainage channel to a closed position that closes the drainage channel.

Then, between the water level gauge unit 4 and the valve body unit 5, the transmitter 13 that transmits the detection of the predetermined water level by the water level gauge unit 4 and the transmitter 13 that transmits the detection of the predetermined water level transmitted from the transmitter 13 are closed. An operation indicator 14 for operating the position moving means 12 is provided.

According to this automatic drainage shutoff device, the water level gauge unit 4 is installed in the field 1 (specifically, it is installed in a removable manner), and the valve body unit 5 is installed in the drainage channel from the field 1. Here, when the valve body 11 in the valve body unit 5 is located at the open position, the drainage channel is opened, and water flows out from the field 1 through the drainage channel.

Then, when the water level in the field 1 drops to a predetermined water level, the water level gauge unit 4 detects the drop (that is, the predetermined water level), and the transmitter 13 transmits the detection to the operation indicator 14. The operation instruction body 14 operates the closed position moving means 12 based on the detection, and the valve body 11 moves from the open position to the closed position. Simply put, when the water level in the field 1 drops to a predetermined water level, the water level gauge unit 4 detects the drop, and the valve body 11 moves from the open position to the closed position based on the detection. In this way, the drainage channel is blocked by the valve body 11, so that the outflow of water from the field 1 is stopped, and the water level in the field 1 remains at a predetermined water level.

Here, in the automatic drainage shutoff device, the water level gauge unit 4 and the valve body unit 5 are between the water level gauge unit 4 and the transmission body 13, an intermediate portion of the transmission body 13, the transmission body 13 and the operation indicator body 14. Between, or between the actuation indicator 14 and the valve body unit 5 (in the illustrated embodiment, between the actuation indicator 14 and the valve body unit 5), they are separably connected. Therefore, by disconnecting the connection, the water level gauge unit 4 can be separated from the valve body unit 5, and the water level gauge unit 4 can be removed from the field 1. Therefore, the water level gauge unit 4 can be left in the storage place at a time when the water level gauge unit 4 is taken to another field 1 for use or when drainage from the field 1 is not performed. That is, according to this automatic drainage shutoff device, the water level gauge unit 4 is separated from the valve body unit 5 and the water level gauge unit 4 is removed from the field 1 and stored when the drainage from the field 1 is not performed. This makes it possible to prevent damage to the water level gauge unit 4 and reduce the time and effort required for maintenance of the automatic drainage shutoff device including the water level gauge unit 4.

Further, since the valve body unit 5 includes the open position holding means 15, even when the transmitter 13 and the operation indicator 14 are removed from the field 1 together with the water level gauge unit 4, the open position holding means 15 is used. , The valve body 11 can be held in the open position and drained from the field 1, and by releasing the open position holding means 15, the valve body 11 can be moved to the closed position and drained from the field 1. Can be stopped.

Further, the water level gauge unit 4 includes a water level gauge main body 6, a float 7, and a positioning unit 8. Therefore, the height of the water level gauge main body 6 from the soil surface 1a in the field 1 is positioned by the positioning unit 8. Further, the water level gauge unit 4 includes a fixed pile 9 to be driven into the driving surface 1b of the field 1 and a fixing means 10, and the positioned water level gauge main body 6 is fixed to the fixed pile 9 by the fixing means 10. Will be done. Then, the water level gauge main body 6 receives the drop of the float 7 due to the drop of the water level in the field 1, and detects the drop of the water level in the field 1 to a predetermined water level. That is, according to this automatic drainage shutoff device, the water level gauge unit 4 is provided with a positioning unit 8 for positioning the height of the water level gauge main body 6 from the soil surface 1a in the field 1, so that the water surface in the field 1 is provided. A predetermined height can be easily obtained.

Further, the positioning unit 8 adjustably positions the height of the water level gauge main body 6 from the soil surface 1a. By adjusting the height of the water level gauge main body 6 from the soil surface 1a by the positioning unit 8, the water level in the field 1 can be adjusted.

1 Field 2 Water supply channel 3 Water supply automatic shutoff device 4 Water level gauge unit 5 Valve body unit 5a Connected part 11 Valve body 12 Closed position moving means 13 Transmitter 13a Outer tube 13b Inner wire 14 Operation indicator 15 Open position holding means 15a Cover Part 17 Energizing member 18 Acting member 18d Locked part 19 Indicator body 19a Locking part 19b Wire connecting part 19c Locking member 19d Connecting member 19e First coil spring (first urging means)
19f Facing surface 19g Facing surface 20 Indicator case 21 Second coil spring (second urging means)

Claims (8)

It is an automatic water supply shutoff device that automatically shuts off the water supply channel to the field.
It is provided with a water level gauge unit that is detachably installed in the field and detects a rise in the water level in the field to a predetermined water level, and a valve body unit that is installed in the water supply channel.
The valve body unit includes a valve body that opens and closes the water supply channel, and a closed position moving means that moves the valve body from an open position that opens the water supply channel to a closed position that closes the water supply channel.
Between the water level gauge unit and the valve body unit, a transmitter that transmits the detection of a predetermined water level by the water level gauge unit and the closed position moving means based on the detection of the predetermined water level transmitted from the transmitter. Is provided with an operation indicator to operate
The water level gauge unit and the valve body unit are between the water level gauge unit and the transmitter, in the middle of the transmitter, between the transmitter and the operation indicator, or between the actuation indicator and the actuation indicator. It is separably connected to the valve body unit, and by disconnecting the connection, the water level gauge unit can be separated from the valve body unit, and the water level gauge unit can be removed from the field. An automatic water supply shutoff device for the field. The water level gauge unit and the valve body unit are separably connected between the operation indicator unit and the valve body unit.
The automatic water supply shutoff device for a field according to claim 1, wherein the valve body unit includes an open position holding means for holding the valve body in an open position in a state where the operation indicator is separated from the valve body unit. .. The open position holding means has a covering portion, and the covering portion is connected to the operation indicating body in the valve body unit when the valve body is held in the open position by the open position holding means. The automatic water supply shutoff device for a field according to claim 2, wherein the connecting portion is covered so that the operation indicator cannot be connected. The transmitter includes an inner wire arranged in an outer tube, and the inner wire operates so as to be pulled toward the water level gauge unit by detecting a predetermined water level by the water level gauge unit.
The closed position moving means includes an urging member that urges the valve body to move from the open position to the closed position, and an acting member that interlocks with the valve body, and the acting member is interlocked with the urging member. The valve body is located in the open position when is located in the first position, and the valve body is located in the closed position when the working member is located in the second position.
The operation indicator includes an indicator body and an indicator case that slidably accommodates the indicator body and is detachably attached to the valve body unit, and the valve body unit of the indicator case. By attaching to the water level gauge unit and the valve body unit, the operation indicator unit and the valve body unit are separably connected to each other.
The indicator body can be moved by the slide to a forward position where the locking portion provided at the tip protrudes from the indicator case and comes into contact with the working member, and a retracting position where the locking portion refrains from the acting member. When the working member is located at the first position and the indicator body is located at the advancing position, the locking portion engages with the locked portion provided on the working member. , The working member is held in the first position, and the valve body interlocking with the working member is held in the open position.
The indicator body has a wire connecting portion to which the inner wire is connected on the rear end side, and the inner wire is pulled toward the water level gauge unit side so that the indicator body is moved from the forward position to the above. After moving to the retracted position, the locking portion is disengaged from the locked portion, and the urging of the urging member causes the acting member to move from the first position to the second position and the locking portion thereof. The automatic water supply shutoff device for a field according to any one of claims 1 to 3, wherein the valve body linked to the working member moves from the open position to the closed position. The indicator body includes a locking member having the locking portion, a connecting member having the wire connecting portion, and a first urging means.
The locking member can slide with respect to the connecting member in the same direction as the sliding direction of the indicator body, and the first urging means acts on the connecting member with the locking member. Encourage to the member side,
The locking member is provided with a facing surface so as to prevent the locking member that has moved toward the working member with respect to the connecting member from coming out of the connecting member, and the connecting member is provided with a facing surface. The automatic water supply shutoff device for a field according to claim 4, wherein a facing surface that abuts on the facing surface is provided. The automatic water supply shutoff device for a field according to claim 5, wherein the operation instruction body includes a second urging means for urging the instruction body main body to the action member side with respect to the instruction body case. The automatic water supply shutoff device for a field according to claim 6, wherein the urging force of the first urging means is larger than the urging force of the second urging means. It is an automatic drainage shutoff device that automatically shuts off the drainage channel from the field.
It is provided with a water level gauge unit that is detachably installed in the field and detects a drop of the water level in the field to a predetermined water level, and a valve body unit that is installed in the drainage channel.
The valve body unit includes a valve body that opens and closes the drainage channel, and a closed position moving means that moves the valve body from an open position that opens the drainage channel to a closed position that closes the drainage channel.
Between the water level gauge unit and the valve body unit, a transmitter that transmits the detection of a predetermined water level by the water level gauge unit and the closed position moving means based on the detection of the predetermined water level transmitted from the transmitter. Is provided with an operation indicator to operate
The water level gauge unit and the valve body unit are between the water level gauge unit and the transmitter, in the middle of the transmitter, between the transmitter and the operation indicator, or between the actuation indicator and the actuation indicator. It is separably connected to the valve body unit, and by disconnecting the connection, the water level gauge unit can be separated from the valve body unit, and the water level gauge unit can be removed from the field. Automatic drainage shutoff device from the field.

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