JP2020089317A - Farming water supply device, farming water supply system and method of installing farming water supply device - Google Patents

Abstract

To provide a farming water supply device that can be maintained easily even when a faucet is clogged with foreign matters.SOLUTION: A farming water supply device 10 comprises: a faucet 12; an electric actuator 14 which is fitted on the faucet for driving a valve body 32, and a scattering prevention cover 70 which is tubular and prevents scattering of service water discharged from a discharge hole 26 of the faucet. The scattering prevention cover is configured to be able to take an exposed state for exposing the discharge hole, in addition to a scattering prevention state for preventing scattering of service water by covering the discharge hole from outside, without detaching the electric actuator from the faucet.SELECTED DRAWING: Figure 8

Description

The present invention relates to an agricultural water supply device, an agricultural water supply system, and a method for installing an agricultural water supply device, and in particular, for example, an agricultural water supply device for supplying water from a water pipeline to a field, an agricultural water supply system, and an agricultural system. Regarding installation method of water supply device for water.

Patent Document 1 discloses an example of a conventional agricultural water supply device. In the technique of Patent Document 1, it is possible to perform water management in a field by remote control or automatic control by mounting an electric actuator that drives the water tap (water supply valve) on the water tap.

JP, 2017-193914, A

Water used for agriculture often contains foreign substances such as grass, straw, and aquatic small animals such as crayfish. For this reason, when water is discharged, foreign matter may be caught or entangled with the column portion or the valve body between the spouts of the water faucet, and the water faucet may cause a malfunction such as a water stop defect.

However, in the technique of Patent Document 1, the periphery of the water outlet of the water tap is covered with a scattering prevention cover, and the electric actuator is mounted thereon. Therefore, in order to remove the foreign matter from the water tap, in addition to the work of attaching and detaching the scattering prevention cover, a labor-intensive work of removing and re-installing the electric actuator is required, which requires labor for maintenance.

Therefore, a main object of the present invention is to provide a novel agricultural water supply device, an agricultural water supply system, and a method for installing an agricultural water supply device.

Another object of the present invention is to provide an agricultural water supply apparatus, an agricultural water supply system, and a method for installing an agricultural water supply apparatus, which enables easy maintenance of the water supply faucet even if the water faucet is clogged with foreign matter. Is.

A first aspect of the present invention is an agricultural water supply device for supplying water to an agricultural field, comprising a valve box having a spout that opens laterally and a valve body capable of opening and closing a water passage in the valve box. A water faucet provided, comprising a main body case that houses a drive mechanism and a drive mechanism for driving the valve body, an electric actuator mounted on the water faucet, and formed in a tubular shape, without removing the electric actuator from the water faucet, It is an agricultural water supply apparatus provided with a splash prevention cover that can cover a spout from the outside to prevent splash of water and an exposed state that exposes the spout.

In the first invention, an agricultural water supply apparatus is an apparatus for controlling water supply from a water supply pipeline to a field, and includes a water supply tap and an electric actuator mounted on the water supply tap. The water tap includes a valve box having a water outlet and a valve body capable of opening and closing a water passage in the valve box, and the electric actuator includes a drive mechanism that drives the valve body and a main body case that houses the drive mechanism. In addition, the agricultural water supply device includes a cylindrical splash prevention cover that covers the water outlet from the outside and prevents splash of the water. The splash prevention cover is configured so as to have an exposed state in which the water discharge port is exposed without removing the electric actuator, in addition to the splash prevention state in which the water is prevented from splashing.

According to the first aspect of the present invention, since the water outlet of the water tap can be exposed without removing the electric actuator, even if foreign matter is clogged in the water tap, the water tap can be easily maintained.

A second invention is according to the first invention, and the electric actuator includes a support portion that supports the scattering prevention cover.

In the second invention, the electric actuator includes the support portion of the scattering prevention cover. That is, the scattering prevention cover is attached to the electric actuator.

A third invention is according to the second invention, wherein the main body case of the electric actuator has a mounting base for mounting the electric actuator on the water faucet at a lower end portion, and the supporting portion is provided on the mounting base. Be done.

In the third invention, the main body case of the electric actuator has a mounting base, and the mounting base is provided with a support portion for supporting the shatterproof cover.

A fourth aspect of the invention is dependent on the third aspect of the invention, wherein the mount is detachably attached to the main body case.

In the fourth aspect of the invention, the mount having the support portion of the scattering prevention cover can be attached to and detached from the main body case. Therefore, the electric actuator can be removed from the water tap with the mounting base and the shatterproof cover left on the water tap side.

A fifth invention is according to any one of the first to fourth inventions, and the scattering prevention cover is provided in the agricultural water supply device so as to be movable in the vertical direction.

In the fifth invention, the scattering prevention cover is provided so as to be movable in the vertical direction, and by moving upward or downward, the scattering prevention state is switched to the exposed state.

A sixth invention is according to any one of the first to fourth inventions, and the scattering prevention cover is formed to be vertically foldable.

In the sixth invention, the shatterproof cover is formed so as to be vertically foldable, and by being folded, the shatterproof cover is switched from the shatterproof state to the exposed state.

A seventh invention is according to any one of the first to fourth inventions, and the scattering prevention cover has a separating portion that allows the scattering preventing cover to be opened along the axial direction, and opens the separating portion. It can be removed from the agricultural water supply system.

In the seventh invention, the shatterproof cover can be removed from the agricultural water supply device by opening the separation part, and by removing it from the agricultural water supply device, the shatterproof state is switched to the exposed state.

According to any one of the fifth to seventh inventions, the shatterproof cover can be exposed with a simple configuration and operation.

An eighth invention is an agricultural water supply system for supplying water to an agricultural field, wherein the agricultural machine according to any one of the first to seventh inventions is provided at an upper end portion of a rising pipe portion of a water pipeline in the agricultural field. It is an agricultural water supply system equipped with a water supply system.

According to the eighth aspect of the invention, the same effect as the first aspect of the invention can be achieved, and since the water outlet of the water faucet can be exposed without removing the electric actuator, even if the water faucet is clogged with foreign matter, it is easy. The maintenance of the water tap can be performed.

A ninth invention is a method for installing an agricultural water supply device using an existing water faucet, including: (a) a step of removing an existing shatterproof cover from the water faucet installed in a field; An electric actuator that drives the valve body, and a new splash prevention that is formed in a tubular shape and can have a splash prevention state that covers the water outlet of the water tap from the outside to prevent splash of water and an exposed state that exposes the water outlet A step of preparing a cover, and (c) a step of attaching the electric actuator prepared in step (b) and a new shatterproof cover to the faucet from which the existing shatterproof cover has been removed in step (a). It is the installation method of the water supply system for agriculture including.

According to the ninth aspect, the water supply device for agriculture can be installed using the existing water tap. After installing the water supply device for agriculture, the water outlet of the water tap can be exposed without removing the electric actuator, so even if foreign matter is clogged in the water tap, the water tap can be easily maintained. You can

According to the present invention, the shatterproof cover can be exposed to expose the spout, that is, the spout of the hydrant can be exposed without removing the electric actuator, so that the hydrant is temporarily clogged with foreign matter. However, the faucet can be easily maintained.

The above-mentioned objects, other objects, features and advantages of the present invention will become more apparent from the detailed description of the embodiments below with reference to the drawings.

It is an illustration figure which shows the agricultural water supply system using the agricultural water supply apparatus which is one Example of this invention. It is an illustration figure which shows the external appearance of the water supply apparatus for agriculture. It is an illustration figure which shows the internal structure of the water supply apparatus for agriculture. It is an illustration figure which shows the internal structure of a water tap. It is an illustration figure which shows the internal structure of an electric actuator. It is an illustration figure which shows the external appearance of a scattering prevention cover. It is an illustration figure which shows a mode that the scattering prevention cover part of the water supply apparatus for agriculture was seen from the upper part. It is an illustration figure which shows the water supply apparatus for agriculture when a scattering prevention cover is an exposed state. It is an illustration figure which shows a mode that the scattering prevention cover part of the water supply apparatus for agriculture when moving a scattering prevention cover up and down was seen from above. It is an illustration figure which shows the scattering prevention cover part of the water supply apparatus for agriculture which is another Example of this invention. It is an illustration figure which shows a mode when a scattering prevention cover is exposed in the water supply apparatus for agriculture of FIG. It is an illustration figure which shows the scattering prevention cover provided in the water supply apparatus for agriculture which is another Example of this invention.

Referring to FIG. 1, an agricultural water supply system 100 (hereinafter, simply referred to as “system 100”) that is an embodiment of the present invention supplies water from a water pipeline 104 to a field 102 such as a paddy field ( It is a system that controls water management) by remote control or automatic control.

As shown in FIGS. 1 to 3, the system 100 includes an agricultural water supply device 10 (hereinafter, simply referred to as “water supply device 10”) attached to an upper end portion of a rising pipe portion 104c of a water supply pipeline 104. The water supply device 10 includes a water tap 12 and an electric actuator 14 mounted on the water tap 12.

The water pipeline 104 is a waterway structure for transmitting and distributing water by a pressure pipeline, and is a main pipe 104 a buried so as to extend over a plurality of cultivated areas formed in the field 102 and a branch from the main pipe 104 a. And a branch pipe 104b extending to each cultivated area. A rising pipe portion 104c is provided at a downstream end portion of the branch pipe 104b, and the water supply device 10 is installed at an upper end portion (downstream side end portion) of the rising pipe portion 104c. That is, the valve box 20 of the water tap 12 is connected to the upper end of the rising pipe portion 104 c, and the main body case 40 of the electric actuator 14 is installed on the water tap 12. Further, below the water supply device 10, a bottomed tubular water receiver 106 is provided so as to surround the upper end of the rising pipe portion 104c. The water receiver 106 receives the water discharged from the water outlet 26 of the water tap 12, and prevents the field 102 from being scraped. In this embodiment, the water receiver 106 is formed using a resin cap, and is fixed to the farm field 102 by a mortar 108 or the like.

Hereinafter, configurations of the water tap 12 and the electric actuator 14 included in the water supply device 10 will be described. However, the specific configurations of the water faucet 12 and the electric actuator 14 are not limited to those exemplified below, and can be appropriately changed.

As shown in FIG. 4, the water tap 12 is a valve device for controlling water supply from the water supply pipeline 104 to the farm field 102. In this embodiment, an alfalfa type water faucet in which the valve shaft and the valve body move up and down as the valve shaft rotates is widely used.

The water tap 12 includes a valve box 20 having a cylindrical top. The valve box 20 includes a cylindrical valve box body 22 and an annular plate-shaped bearing 24 provided so as to seal the upper end opening of the valve box body 22. The valve box body 22 is made of a synthetic resin such as hard polyvinyl chloride, and has a nominal diameter of, for example, 100 mm and a height (axial length) of, for example, 200 mm.

At the lower end of the valve box body 22, a socket-shaped connecting portion 22a is provided so as to open downward. The connecting portion 22a is used for connection with the upper end of the rising pipe portion 104c of the water pipeline 104, and the water from the water pipeline 104 flows into the valve box 20 through the lower opening of the valve box body 22. On the other hand, in the upper portion of the side wall of the valve box main body 22, a plurality of (four in this embodiment) rectangular water discharge ports 26 are formed so as to be arranged at predetermined intervals in the circumferential direction. The side wall between the water discharge ports 26 is used as a support column 28 for supporting the bearing 24, the valve body 32, and the like.

On the inner surface of the side wall of the valve box main body 22, there is formed an annular projection-shaped valve seat 30 having a water passage port 30a that connects the upper space and the lower space inside the valve box main body 22. The upper surface of the valve seat 30 (the water stop surface that contacts the valve body 32) is arranged at the same height position as the lower end edge of the water discharge port 26.

A valve body 32 that opens and closes the water passage 30a by being separated from and in contact with the valve seat 30 is provided in an upper space in the valve box body 22 so as to be vertically movable. Specifically, a female screw is formed on the inner peripheral surface of the bearing 24, and a valve shaft 34 having a male screw formed on the outer peripheral surface is screwed into the bearing 24. A coupling portion 34a that is non-rotatably connected to a coupling portion 58a of a rotary shaft 58 included in the electric actuator 14, which will be described later, is formed on the upper end portion of the valve shaft 34. On the other hand, at the lower end of the valve shaft 34, a disc-shaped valve body 32 having a waterproof rubber 32a on its lower surface is provided. When a rotational force about the axis is applied to the valve shaft 34, the feed screw mechanism moves the valve shaft 34 up and down, and the valve body 32 also moves up and down. The water movement port 30a of the valve seat 30 is opened and closed by the vertical movement of the valve body 32, and when the valve is closed, the peripheral edge of the lower surface of the water blocking rubber 32a abuts the upper surface of the valve seat 30 to stop water.

Although not shown in the drawings, an intake pipe or sprinkler connected to a float valve or the like is connected to the lower portion of the valve box body 22 (specifically, the height position between the connection portion 22a and the valve seat 30). A possible mounting port may be formed. When such a mounting port is formed in the valve box main body 22, a filter for preventing foreign matter from entering the mounting port may be provided in the lower space of the valve box main body 22.

It should be noted that this type of faucet 12 is provided with a splash prevention cover 110 as an accessory to prevent splashing of the water discharged from the spout 26, and the splash prevention cover 110 is screwed to the valve box 20. It is fixed by etc. However, in this embodiment, as shown in FIGS. 1 to 3, the splash prevention cover 110 is removed from the valve box 20, and the water supply device 10 is configured using the water tap 12 with the splash prevention cover 110 removed. I have to.

Subsequently, the configuration of the electric actuator 14 will be described. Referring to FIG. 5 together with FIGS. 2 and 3, the electric actuator 14 is a device that drives the valve body 32 of the water tap 12, that is, operates the opening/closing mechanism of the water tap 12, and has a cylindrical body case 40. Equipped with. The size, shape, material, etc. of the main body case 40 are not particularly limited as long as they can accommodate the internal mechanism described later, but in this embodiment, a short pipe and a pipe made of hard polyvinyl chloride having a nominal diameter of 150 mm. The body case 40 is formed by combining the joints. Further, the lower end and the upper end of the main body case 40 are configured to be attachable to and detachable from the center of the main body case 40 (disassembleable).

A disc-shaped bottom wall provided at the lower end of the main body case 40 is used as a mounting base 40 a for mounting the electric actuator 14 on the water tap 12. A hole through which the valve shaft 34 of the water tap 12 is inserted and a hole through which a fastening member such as a screw is inserted are appropriately formed in the mounting base 40a. Further, the mount 40a can be attached to and detached from the side wall of the main body case 40. That is, the main body case 40 has a mounting base 40a detachably provided at the lower end thereof.

Further, the mounting base 40a has a brim-shaped support portion 64 projecting outward from the outer peripheral surface of the side wall of the main body case 40, and the support portion 64 causes a shatterproof cover 70 (hereinafter, simply referred to as “cover”). 70") is supported in a shatterproof state. The support portion 64 is provided with screw holes 66, which are screwed into screws 80 for fixing the cover 70 to the support portion 64, at predetermined intervals in the circumferential direction. Further, on the side wall of the main body case 40, locking portions 68 for holding the cover 70 in an exposed state are provided at predetermined intervals in the circumferential direction. The locking portion 68 is a protrusion protruding outward from the side wall of the main body case 40, and in this embodiment, the head of the screw used for assembling the main body case 40 is used as the locking portion 68.

A solar cell panel 42 is detachably attached to the main body case 40. The solar cell panel 42 is supported by a bent plate-shaped holding body 44 at a predetermined angle.

A drive mechanism including the electronic board 46, the antenna 48, the storage battery 50, the motor 52, the main gear 54, and the like is housed inside the main body case 40.

Although not shown, the electronic board 46 is provided with a control unit including a CPU and a memory, a wireless communication unit, a frequency changeover switch, and the like. The control unit controls the electric actuator 14 as a whole and controls driving of the motor 52 (driving mechanism) and the like. The wireless communication unit performs wireless communication with other devices via the antenna 48.

The storage battery 50 stores the electric power generated by the solar cell panel 42. The motor 52 is driven by the electric power stored in the storage battery 50. A small gear 56 is provided at the tip of the output shaft 52a of the motor 52, and the main gear 54 is connected to the small gear 56 to receive the driving force from the motor 52 and rotate around the axis. Rotate.

The main gear 54 is a boss type gear, and a substantially cylindrical rotation shaft 58 is inserted into the shaft portion of the main gear 54. A coupling portion 58a connected to the coupling portion 34a of the valve shaft 34 of the water tap 12 is formed at the lower end of the rotary shaft 58. Further, a key groove 54a extending along the axial direction is formed on the inner peripheral surface of the shaft portion of the main gear 54, and a sliding key 58b fitted to the key groove 54a is formed on the outer peripheral surface of the rotating shaft 58. It is formed so as to extend along the direction. As a result, the rotary shaft 58 is rotated along with the rotation of the main gear 54 and is also slidable in the axial direction with respect to the shaft portion of the main gear 54.

An operation panel 60 for driving the motor 52 manually (electrically) is provided on the outer surface of the body case 40. The operation panel 60 is appropriately provided with a main power switch, an up button, a down button, a selection button for switching the operation mode of the electric actuator 14 (remote mode, automatic mode, manual mode, or the like). The operation panel 60 is also provided with connection terminals and the like for connecting wires extending from each sensor described later. Further, an inspection port 62 is formed at the lower end of the main body case 40 for confirming the operation of the rotary shaft 58 and performing maintenance work such as cleaning.

Although illustration is omitted, in the field 102, a water level sensor such as an ultrasonic sensor that detects the field water level, a temperature sensor that detects the temperature, a pressure sensor that detects the atmospheric pressure, a soil moisture sensor that detects the soil moisture, or the like. A sensor is provided as appropriate. Each sensor is connected to the electric actuator 14 via a wire or the like, and sensor information such as the field water level and the temperature detected by each sensor is input to the control unit of the electric actuator 14.

When mounting the electric actuator 14 on the water tap 12, the bearing 24 and the mounting base 40 a of the main body case 40 are made of bolts or the like while the main body case 40 of the electric actuator 14 is placed on the water tap 12. It is fixed by a fastening member. Further, the coupling portion 34a of the valve shaft 34 of the water tap 12 and the coupling portion 58a of the rotary shaft 58 of the electric actuator 14 are non-rotatably connected.

In the system 100 including the water supply device 10 described above, for example, when the user transmits an operation instruction (control signal) indicating fully closed, fully opened, or an arbitrary opening degree to the electric actuator 14 using the remote operation terminal, The control unit of the electric actuator 14 drives the motor 52 according to the operation instruction. The driving force of the motor 52 is transmitted to the main gear 54, and the rotary shaft 58 rotates together with the main gear 54. As a result, a rotational force is applied to the valve shaft 34 of the water tap 12 that is fixedly connected to the rotating shaft 58. The valve shaft 34 to which the rotational force is applied is vertically moved by the feed screw mechanism of itself and the bearing 24, and the valve body 32 is moved to the fully open position and the fully closed position. Further, the rotating shaft 58 of the electric actuator 14 moves up and down so as to penetrate the shaft portion of the main gear 54 as the valve shaft 34 of the water tap 12 moves up and down.

By introducing the system 100 as described above into the farm field 102, the labor required for managing the water supply in the farm field 102 can be significantly reduced. The water tap 12 may be clogged and malfunction. However, in the related art, in order to remove foreign matter from the water tap, it is necessary to remove the scattering prevention cover and the electric actuator, and there is a problem that maintenance takes time.

Therefore, in this embodiment, the scattering prevention cover 110, which is an accessory part of the water tap 12, is removed from the water tap 12, and a new cover 70 is attached to the water supply device 10, thereby eliminating the work of removing the electric actuator 14. The foreign material removal work of the water tap 12 was made possible. The cover 70 is arranged so as to cover the water outlet 26 of the water tap 12 from the outside, and guides the flow direction of the water discharged from the water outlet 26 to the outside of the valve box 20 downward to guide the water around the water. Although this is a member for preventing scattering, in this embodiment, in addition to such a scattering prevention state, an exposed state in which the water outlet 26 is exposed can be taken. Further, the cover 70 of this embodiment is configured as an accessory to the electric actuator 14 and is attached to the mounting base 40 a of the main body case 40. Hereinafter, the configuration and operation of the cover 70 will be specifically described.

As shown in FIGS. 5 to 7, the cover 70 is formed in a tubular shape (enclosure shape) from synthetic resin such as hard polyvinyl chloride. Specifically, the cover 70 has a cylindrical side wall 72 and an annular plate-shaped hanging portion 74 extending inward from the upper edge of the side wall 72. The diameter of the inner peripheral edge of the hanging portion 74 is set to be slightly larger than the outer diameter of the lower end of the side wall of the main body case 40, and the cover 70 is movable in the vertical direction with respect to the main body case 40. There is.

In addition, semicircular cutouts 76 are formed on the inner peripheral edge of the hanging portion 74 at respective circumferential positions corresponding to the locking portions 68 provided on the main body case 40. The notch 76 allows passage of the locking portion 68 when the cover 70 moves up and down. Further, the hanging portion 74 has a gourd-shaped insertion hole 78 having a small diameter portion 78a and a large diameter portion 78b at respective circumferential positions corresponding to the screw holes 66 formed in the support portion 64 of the mounting base 40a. It is formed. The small diameter portion 78a has a diameter slightly larger than the outer diameter of the shaft portion of the screw 80, and is used for fixing the cover 70 with the screw 80. On the other hand, the large diameter portion 78b has a diameter slightly larger than the outer diameter of the head of the screw 80, and allows the head of the screw 80 to pass when the cover 70 moves up and down. When the screw hole 66 and the large-diameter portion 78b are aligned in the circumferential direction, the engaging portion 68 and the notch 76 are aligned in the circumferential direction.

Such a cover 70 is normally used in a scattering prevention state attached to the support portion 64 of the mounting base 40a as shown in FIGS. 1 to 3, and covers the periphery of the water outlet 26 from the outside. Prevent scattering. When attaching the cover 70 to the support portion 64, the hanging portion 74 of the cover 70 is supported on the upper surface of the support portion 64, and the screw 80 is fastened to the screw hole 66 via the small diameter portion 78 a of the insertion hole 78. The cover 70 is fixed. Although illustration is omitted, it is preferable that a ring-shaped water blocking packing is sandwiched between the contact surfaces of the hanging portion 74 and the support portion 64.

On the other hand, during maintenance or inspection of the water tap 12, as shown in FIG. 8, the cover 70 is moved upward and held in an exposed state where the water spout 26 is exposed. When the cover 70 is displaced to the exposed state, as shown in FIG. 9, the screw 80 is loosened and the cover 70 is slightly rotated in the circumferential direction so that the position of the head of the screw 80 is set to the large diameter portion 78 b of the insertion hole 78. To the position of. As a result, the cover 70 can be moved upward, and thus the cover 70 is lifted straight up. Then, after the locking portion 68 of the main body case 40 passes through the notch 76 of the cover 70, the cover 70 is slightly rotated in the circumferential direction so that the locking portion 68 supports the lower surface of the hanging portion 74 of the cover 70. As a result, the cover 70 is held in the exposed state as shown in FIG. 8 and the spout 26 is exposed, so that the maintenance work of the water tap 12 can be performed.

As described above, the switching (displacement) of the cover 70 from the scattering prevention state to the exposed state can be performed by a simple operation of loosening the screw 80 and lifting the cover 70. That is, when the water plug 12 is clogged with foreign matter for maintenance, the spout 26 can be easily exposed, and the clogged foreign matter can be easily removed. Also, switching from the exposed state of the cover 70 to the scattering prevention state can be performed by a simple operation of lowering the cover 70 and tightening the screw 80. Therefore, the maintenance work of the water tap 12 can be easily performed.

Subsequently, a method of installing the water supply device 10 in the farm field 102 will be described. In this embodiment, the water supply device 10 is installed using the existing water supply tap 12.

With reference to FIG. 1, when the water supply device 10 is installed in the field 102, first, the existing shatterproof cover 110 (see FIG. 4) is removed from the water tap 12 installed in the field 102. Further, the electric actuator 14 and the cover 70 described above are prepared in the field 102. Then, the prepared electric actuator 14 and the cover 70 are attached to the water tap 12 from which the existing shatterproof cover 110 is removed. At this time, the mounting base 40a to which the cover 70 is mounted, or one in which the lower end portion of the main body case 40 is connected to the mounting base 40a, is first mounted on the water tap 12, and then the rest of the electric actuator 14 is mounted. You should do so.

After installation of the water supply device 10, as described above, maintenance of the water supply tap 12 can be performed only by displacing the cover 70 to the exposed state without removing the electric actuator 14.

However, when installing the water supply apparatus 10, it is not always necessary to use the existing water supply tap 12, and the water supply tap 12 may be newly installed. In this case, it is advisable to use only the main body portion of the water tap 12 to which the shatterproof cover 110 as an accessory is not attached.

In this embodiment, the mounting base 40a can be attached to and detached from the main body case 40. Therefore, when it becomes necessary to replace the electric actuator 14 due to a failure or when the electric actuator 14 is temporarily stored in a storage cabinet in winter or the like, the mounting base 40a and the cover 70 are left on the water tap 12. This is convenient because the main body of the electric actuator 14 can be removed in this state.

As described above, according to this embodiment, the cover 70 can take an exposed state in which the water discharge port 26 is exposed without removing the electric actuator 14. Therefore, even if the water tap 12 is clogged with foreign matter, the water tap 12 can be easily maintained without the troublesome work of removing and reattaching the electric actuator 14.

In the above-described embodiment, the upper surface of the support portion 64 supports the lower surface of the hanging portion 74 of the cover 70 so that the cover 70 is exposed by moving upward. It may be screwed to the lower surface side of 64. In this case, the cover 70 is exposed by being moved downward after removing the screw, and is kept exposed by being placed on the field 102 or the water receiver 106.

Further, the cover 70 does not necessarily need to be fixed to the support portion 64 by screwing, but can be fixed by using, for example, a so-called bayonet coupling method. Further, for example, by sandwiching the hanging portion 74 of the cover 70 between the support portion 64 and the protrusion (for example, the head of the screw used for assembling the main body case 40) provided on the outer surface of the side wall of the main body case 40, The cover 70 can also be fixed.

Next, a water supply device 10 according to another embodiment of the present invention will be described with reference to FIGS. 10 and 11. In this embodiment, the configuration of the cover 70 (a mode for taking an exposed state) is different from that of the above-described embodiments. Since the other parts are the same, the parts common to the above-described embodiment are designated by the same reference numerals, and the duplicated description will be omitted or simplified.

As shown in FIG. 10, the cover 70 is formed in a tubular shape from a flexible material such as silicone rubber and EPDM (ethylene propylene diene rubber). Specifically, the cover 70 has a cylindrical side wall 72 and an annular plate-shaped hanging portion 74 extending inward from the upper end edge of the side wall 72. The side wall 72 is formed so as to gradually expand in diameter downward, and has a fold line extending in the circumferential direction. As shown in FIG. 11, the side wall 72 is mountain-folded or valley-folded with the fold portion as a boundary, so that the side wall 72 can be folded in the vertical direction (axial direction) so as to gather on the hanging portion 74 side. is there. At this time, the side wall 72 is folded so that the peaks and the valleys are lined up in the radial direction. As a result, the force that the bent portion of the side wall 72 tends to expand acts in the radial direction, so that the side wall 72 can stably hold this folded shape.

Such a cover 70 is attached to the support portion 64 by screwing the hanging portion 74 to the support portion 64 of the mounting base 40a. As shown in FIG. 10, the cover 70 in a normal state is used in a state where the side wall 72 is extended (scattering prevention state), and covers the periphery of the water discharge port 26 to prevent water splashing. On the other hand, at the time of maintenance or inspection of the water tap 12, the cover 70 is deformed into a state (exposed state) in which the side wall 72 is folded, as shown in FIG. 11. As a result, the water discharge port 26 is exposed.

The switching (deformation) of the cover 70 between the scattering prevention state and the exposed state can be performed by a simple operation of gripping the lower end portion of the side wall 72 and lifting or lowering it. That is, when the water plug 12 is clogged with foreign matter for maintenance, the spout 26 can be easily exposed, and the clogged foreign matter can be easily removed.

Also in the embodiment shown in FIG. 10, since the water outlet 26 of the water tap 12 can be exposed without removing the electric actuator 14, even if foreign matter is clogged in the water tap 12, the water tap 12 can be easily maintained. It can be carried out.

In the embodiment shown in FIG. 10, the cover 70 can hold the exposed state (folded shape) by itself, but the present invention is not limited to this. For example, the side wall 72 of the cover 70 may be formed into a bellows shape such as a lantern or an accordion so that the peaks and valleys can be folded side by side in the axial direction. In this case, even if the cover 70 is exposed, the cover 70 hangs down. Therefore, it is preferable to separately provide a fastener for holding the cover 70 in the exposed state. Further, it is also possible to adopt a mode in which an operator lifts the cover 70 with one hand to expose it and removes foreign matter with the other hand without providing a fastener.

In the embodiment shown in FIG. 10, the cover 70 is exposed by folding the side wall 72 in the axial direction. For example, the cover 70 is formed of a flexible elastic material such as rubber. By turning over (reversing), the shatterproof state may be changed to the exposed state.

Next, with reference to FIG. 12, a water supply device 10 according to another embodiment of the present invention will be described. In this embodiment, the configuration of the cover 70 (a mode for taking an exposed state) is different from that of the above-described embodiments. Since the other parts are the same, only the cover 70 included in the water supply device 10 is shown in the drawing, and duplicate description of parts common to the above-described embodiment will be omitted or simplified.

As shown in FIG. 12, the cover 70 is formed in a tubular shape from a synthetic resin such as hard polyvinyl chloride or a metal such as stainless steel. Specifically, the cover 70 has a cylindrical side wall 72 and an annular plate-shaped hanging portion 74 extending inward from the upper edge of the side wall 72. A circular insertion hole 78 is formed in the hanging portion 74. Further, the cover 70 is formed by a pair of halves. The circumferential ends of the half halves are connected to each other by a hinge (not shown), and the cover 70 can be opened centering on the hinge. That is, the cover 70 has the separating portion 90 that allows the cover 70 to be opened along the axial direction. The separating portion 90 is formed with a rectangular plate-shaped joining portion 92 that projects outward. The joint portion 92 has an insertion hole 94, and the joint portions 92 are screwed together through the insertion hole 94, whereby the cover 70 maintains a cylindrical shape (closed state). In addition, it is preferable that a water blocking packing is sandwiched between the contact surfaces of the halves.

Such a cover 70 is normally used in a splash-proof state attached to the support portion 64 of the mount 40a, and covers the periphery of the spout 26 from the outside to prevent splashing of the water. When attaching the cover 70 to the support portion 64, the hanging portion 74 of the cover 70 is set so as to be supported on the upper surface of the support portion 64, and the separation portion 90 is closed to screw the joint portions 92 to each other. Further, the cover 70 is fixed by screwing the hanging portion 74 to the support portion 64 via the insertion hole 78.

On the other hand, at the time of maintenance or inspection of the water tap 12, the cover 70 is removed from the support portion 64, so that the water outlet 26 of the water tap 12 is exposed.

The switching (removal) of the cover 70 from the scattering prevention state to the exposed state can be performed by a simple operation of removing the screw, opening the separating portion 90, and removing the cover 70. Further, the switching of the cover 70 from the exposed state to the shatterproof state can also be performed by a simple operation of setting the cover 70 on the support portion 64 and screwing it. Therefore, the maintenance work of the water tap 12 can be easily performed.

Also in the embodiment shown in FIG. 12, since the water outlet 26 of the water tap 12 can be exposed without removing the electric actuator 14, even if the water tap 12 is clogged with foreign matter, the water tap 12 can be easily maintained. It can be carried out.

In addition, in the embodiment shown in FIG. 12, the cover 70 is formed by the half-divided body whose one end in the circumferential direction is hinged, but the half-divided body forming the cover 70 may be completely separable. .. Further, the cover 70 can be formed by a divided body of three or more divisions.

Further, in each of the above-described embodiments, the side wall 72 of the cover 70 of the water faucet 12 is formed in a cylindrical shape, but the present invention is not limited to this, and the side wall 72 of the cover 70 may be formed in a rectangular tube shape or the like.

Furthermore, in each of the above-described embodiments, the mounting portion 40a included in the main body case 40 is provided with the support portion 64 that supports the cover 70, but the present invention is not limited thereto. For example, a collar-shaped support portion 64 protruding from the outer peripheral surface of the main body case 40 may be provided on the main body case 40 at a position different from the mounting base 40a. Further, a brim-shaped support member may be attached to the outer peripheral surface of the valve box 20 of the water tap 12, and the cover 70 may be supported by this support member. That is, the cover 70 may be attached to the water tap 12 side.

Furthermore, in each of the above-described embodiments, the valve box 20 of the water faucet 12 is exemplified by the valve box body 22 integrally formed with the column 28, but the valve box body and the column are separate members. The valve box may be formed by combining them. Further, the support column and the bearing may be integrally formed.

Further, in each of the above-described embodiments, the water tap 12 having the opening/closing mechanism in which the valve shaft 34 and the valve body 32 move up and down as the valve shaft 34 rotates is illustrated. It is also possible to adopt a mechanism in which the valve body (float valve) of (1) is lifted by buoyancy and is stopped by being brought into close contact with the valve seat by water pressure.

It should be noted that the specific numerical values such as the dimensions and the specific shapes mentioned above are merely examples, and can be appropriately changed according to the needs of the product specifications.

10... Agricultural water supply device 12... Water faucet 14... Electric actuator 20... Valve box 26... Spout 32... Valve body 40... Main body cover 40a... Mounting base 64... Support part 68... Engagement part 70... Shatter prevention cover 72... Side wall 74... Hanging part 100... Agricultural water supply system 102... Farm field 104... Water pipeline

Claims (9)

An agricultural water supply device for supplying water to a field,
A water faucet including a valve box having a water outlet opening to the side and a valve body capable of opening and closing a water passage in the valve box,
An electric actuator that includes a drive mechanism that drives the valve body and a main body case that houses the drive mechanism, is mounted on the water tap, and is formed in a tubular shape without removing the electric actuator from the water tap. A water supply apparatus for agriculture, comprising: a splash prevention cover that covers the spout from the outside to prevent the water from splashing, and a splash prevention cover that can be in an exposed state in which the spout is exposed. The agricultural water supply device according to claim 1, wherein the electric actuator includes a support portion that supports the scattering prevention cover. The main body case of the electric actuator has a mounting base for mounting the electric actuator to the water faucet at a lower end portion,
The agricultural water supply device according to claim 2, wherein the support portion is provided on the mounting base. The agricultural water supply device according to claim 3, wherein the mount is detachably provided to the main body case. The agricultural water supply device according to any one of claims 1 to 4, wherein the splash prevention cover is provided so as to be vertically movable in the agricultural water supply device. The agricultural water supply device according to claim 1, wherein the scattering prevention cover is formed so as to be vertically foldable. The scattering prevention cover has a separation portion that allows the scattering prevention cover to be opened along the axial direction, and is removable from the agricultural water supply device by opening the separation portion. The water supply device for agriculture according to any one of 1. An agricultural water supply system for supplying water to a field,
An agricultural water supply system in which the agricultural water supply device according to any one of claims 1 to 7 is attached to an upper end portion of a rising pipe portion of a water supply pipeline in the field. A method for installing an agricultural water supply device using an existing water tap,
(A) a step of removing an existing shatterproof cover from the water tap installed in the field,
(B) An electric actuator that drives the valve body of the water tap, and a splash prevention state that is formed in a cylindrical shape and covers the water outlet of the water tap from the outside to prevent water splash, and an exposure that exposes the water outlet. A step of preparing a new scattering prevention cover capable of taking a state, and (c) a step of preparing the step (b) for the water faucet from which the existing scattering prevention cover has been removed in the step (a). A method for installing an agricultural water supply device, comprising the step of attaching the electric actuator and the new shatterproof cover.

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