JP7148365B2 - Agricultural Hydrant, Agricultural Water Apparatus and Agricultural Water Supply System - Google Patents

Description

TECHNICAL FIELD The present invention relates to an agricultural hydrant, an agricultural water supply device and an agricultural water supply system, and particularly, for example, an agricultural hydrant, an agricultural water supply device and an agricultural water supply system for supplying water from an agricultural water pipeline to a field. Regarding.

An example of a conventional agricultural water supply system is disclosed in Patent Document 1. In the technique of Patent Document 1, by attaching an electric actuator for driving a water tap (water supply valve) to the top of the water supply valve, it is possible to manage field water by remote control or automatic control.

JP 2017-193914 A

Irrigation water used in agriculture often contains foreign substances such as grass, straw, and small aquatic animals such as crayfish. For this reason, when water is discharged, the foreign matter may get caught or entangled with the struts or the valve body between the water outlets of the water faucet, which may cause the water faucet to malfunction such as failing to stop the water.

However, in the technique disclosed in Patent Document 1, the periphery of the spout of the hydrant is covered with a scattering prevention cover. Therefore, in order to remove the foreign matter, it is necessary to remove and reattach the anti-scattering cover each time (detachment work), which takes time and effort for maintenance. In particular, in the case of a water supply apparatus in which an electric actuator is attached to a hydrant, it is necessary to attach and detach not only the anti-scattering cover but also the electric actuator, which requires a great deal of labor.

SUMMARY OF THE INVENTION Therefore, a primary object of the present invention is to provide a novel agricultural hydrant, agricultural water supply apparatus and agricultural water supply system.

Another object of the present invention is to provide an agricultural hydrant, an agricultural water supply device, and an agricultural water supply system that can be easily maintained even if they are clogged with foreign matter.

A first invention is an agricultural hydrant for supplying water to a field, comprising a valve box, a valve body capable of opening and closing a water passage in the valve box, and a valve body formed in the valve box to supply water to the valve box. A spout that discharges to the outside and a spout that is attached to the valve box and deformed without being removed from the valve box to cover the spout from the outside to prevent splashing of water and exposure that exposes the spout An agricultural faucet with a shatterproof cover that can take on and off conditions.

In the first invention, an agricultural hydrant controls water supply from an irrigation pipeline to a field, and includes a valve box and a valve body capable of opening and closing a water passage in the valve box. The valve box is formed with a spout for discharging service water that has flowed inside to the outside. Further, the valve box is provided with a scattering prevention cover for preventing splashing of the service water discharged from the spout. This scattering prevention cover is formed so as to be able to take an exposed state in which the spout is exposed in addition to a scattering prevention state in which the spout is covered from the outside to prevent splashing of the water.

According to the first invention, the scattering prevention cover can take an exposed state in which the spout is exposed, that is, the spout can be exposed without removing the scattering prevention cover. Even if it is clogged, maintenance can be easily performed.

A second invention is according to the first invention, wherein the shatterproof cover has a cylindrical side wall that can be folded in the axial direction, and is exposed when the side wall is folded.
A third invention is according to the first invention, wherein the anti-scattering cover is formed in a cylindrical shape from a flexible elastic material, and is exposed by being turned over.
A fourth invention is according to the first invention, wherein the anti-scattering cover is formed in a sheet shape, attached to the valve body so as to be wrapped around the valve case, and exposed by being turned over.

According to the second to fourth inventions, the anti-scattering cover can be exposed with a simple configuration and operation.

A fifth aspect of the invention is an agricultural water supply device for supplying water to a field, which is attached to the agricultural hydrant according to any one of the first to fourth and the agricultural hydrant, It is an agricultural water supply device provided with an electric actuator that drives a valve body of an agricultural water faucet.

According to the fifth invention, the anti-scattering cover can take an exposed state in which the spout is exposed. Therefore, since the spout can be exposed without removing the anti-scattering cover and the electric actuator, maintenance can be easily performed even if the agricultural water faucet is clogged with foreign matter.

A sixth invention is an agricultural water supply system for supplying water to a field, wherein the agricultural water supply device according to the fifth invention is attached to the upper end of the rising pipe portion of the water pipeline in the field. , is an agricultural water supply system.

According to the sixth invention, the same effects as those of the fifth invention can be obtained, and the spout can be exposed without removing the anti-scattering cover and the electric actuator. can also be easily maintained.

According to this invention, the spout can be exposed without removing the shatter-preventing cover. However, maintenance can be easily performed.

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

BRIEF DESCRIPTION OF THE DRAWINGS It is an illustration figure which shows the agricultural water supply system which is one Example of this invention. It is an illustration figure which shows the water supply apparatus for agriculture with which the water supply system for agriculture is provided. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an illustrative view showing an agricultural water tap provided in an agricultural water supply system, wherein (A) shows the appearance of the agricultural water tap when the anti-scattering cover is in the anti-scattering state, and (B) shows the appearance of the agricultural water tap at that time; A cross section of an agricultural hydrant is shown. It is an illustration figure which shows the internal structure of the electric actuator with which an agricultural water supply apparatus is provided. BRIEF DESCRIPTION OF THE DRAWINGS It is an illustration figure which shows the hydrant for agriculture when a scattering prevention cover is an exposed state, (A) shows the external appearance of the hydrant for agriculture, (B) shows the cross section of the hydrant for agriculture. It is an illustration figure which shows the water tap for agriculture which is other Example of this invention, Comprising: (A) shows the cross section of the water tap for agriculture when the anti-scattering cover is in a scattering prevention state, (B) shows, 1 shows a cross-section of an agricultural hydrant when the shatterproof cover is exposed;

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

As shown in FIGS. 1 and 2, the system 100 includes an agricultural water supply device 10 (hereinafter simply referred to as the “water supply device 10”) attached to the upper end of the riser portion 104c of the water pipeline 104. As shown in FIG. This water supply device 10 includes an agricultural hydrant 12 (hereinafter simply referred to as “water hydrant 12 ”) and an electric actuator 14 mounted on the hydrant 12 .

The irrigation water pipeline 104 is a waterway organization for transmitting and distributing irrigation water by pressure pipelines, and includes a main pipe 104a buried so as to extend over a plurality of cultivated plots formed in the field 102, and branching off from the main pipe 104a. and a branch pipe 104b extending to each cultivation plot. A riser pipe portion 104c is provided at the downstream end of the branch pipe 104b, and the agricultural water supply apparatus 10 is installed at the upper end (downstream end) of the riser pipe portion 104c. That is, the valve box 20 of the water faucet 12 is connected to the upper end portion of the riser pipe portion 104 c , and the body case 40 of the electric actuator 14 is installed on the water faucet 12 . Further, a bottomed cylindrical water receiver 106 is provided below the water supply device 10 so as to surround the upper end portion of the riser pipe portion 104c. The water receiver 106 receives the water discharged from the spout 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 fixed to the field 102 with mortar 108 or the like.

The configurations of the water tap 12 and the electric actuator 14 included in the water supply device 10 will be described below. However, the specific configurations of the water tap 12 and the electric actuator 14 are not limited to those illustrated below, and can be changed as appropriate.

As shown in FIG. 3 , the water tap 12 is a valve device for controlling water supply from the water pipeline 104 to the field 102 . In this embodiment, a commonly used faucet is used in which the valve shaft and the valve body move up and down as the valve shaft rotates.

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

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

On the inner surface of the side wall of the valve body 22, an annular protrusion-shaped valve seat 30 having a water passage port 30a that communicates between the upper space and the lower space in the valve body 22 is formed. The upper surface of the valve seat 30 (the water stop surface that contacts the valve body 32) is arranged at the same height as the lower edge of the spout 26. As shown in FIG.

In the upper space within the valve box main body 22, a valve element 32 that opens and closes the water flow port 30a by coming into and out of contact with the valve seat 30 is provided so as to be vertically movable. Specifically, a female thread is formed on the inner peripheral surface of the bearing 24 , and a valve shaft 34 having a male thread formed on the outer peripheral surface thereof is screwed into the bearing 24 . At the upper end of the valve shaft 34, a coupling portion 34a is formed which is non-rotatably connected to a coupling portion 58a of a rotating shaft 58 of the electric actuator 14, which will be described later. 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 around the axis is applied to the valve shaft 34, the valve shaft 34 moves up and down by the feed screw mechanism, and the valve body 32 moves up and down accordingly. The vertical movement of the valve body 32 opens and closes the water passage port 30a of the valve seat 30, and when the valve is closed, the peripheral portion of the lower surface of the water stop rubber 32a comes into contact with the upper surface of the valve seat 30 to stop water.

The upper half of the valve box 20 is covered with a capped cylindrical anti-scatter cover 36 (hereinafter simply referred to as "cover 36"). The cover 36 prevents the water from splashing around by guiding downward the flow direction of the water discharged from the spout 26 to the outside of the valve box 20 . A specific configuration of the cover 36 will be described later.

Although illustration is omitted, a water intake pipe or a water faucet connected to a float valve or the like is connected to the lower portion of the valve body 22 (specifically, the height position between the connecting portion 22a and the valve seat 30). Possible mounting openings may be formed. When such a mounting opening is formed in the valve body 22, it is preferable to provide a filter in the lower space inside the valve body 22 to prevent foreign matter from entering the mounting opening.

Next, the configuration of the electric actuator 14 will be described. 4 together with FIGS. 1 and 2, the electric actuator 14 drives the valve body 32 of the water faucet 12, that is, operates the opening/closing mechanism of the water faucet 12. The main body case 40 has a cylindrical shape. Prepare. The size, shape and material of the main body case 40 are not particularly limited as long as they can accommodate the internal mechanism described later. A body case 40 is formed by combining joints.

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

Further, an electronic substrate 46, an antenna 48, a storage battery 50, a motor 52, a main gear 54, and the like are housed inside the body case 40. As shown in FIG.

Although not shown, the electronic board 46 is provided with a control section including a CPU, a memory, and the like, a wireless communication section, a switch for a main power supply, and the like. The control unit manages overall control of the electric actuator 14 and controls driving of the motor 52 and the like. The wireless communication unit performs wireless communication with other devices via the antenna 48 .

The storage battery 50 stores electric power generated by the solar panel 42 . Motor 52 is driven by electric power stored in 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 driving force from the motor 52 and rotate around the axis. Rotate.

The main gear 54 is a double-boss type gear, and a substantially cylindrical rotating shaft 58 is inserted through the shaft portion of the main gear 54 . A coupling portion 58 a that is connected to the coupling portion 34 a of the valve shaft 34 of the water faucet 12 is formed at the lower end portion of the rotating shaft 58 . A key groove 54a extending in 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 in 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 rotates together with the rotation of the main gear 54 and is slidable in the axial direction with respect to the shaft portion of the main gear 54 .

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

Although not shown, the field 102 includes a water level sensor such as an ultrasonic sensor for detecting the water level of the field, a temperature sensor for detecting the air temperature, a pressure sensor for detecting the atmospheric pressure, a soil moisture sensor for detecting the soil moisture, and the like. A sensor is suitably provided. Each sensor is connected to the electric actuator 14 via wiring or the like, and sensor information such as the field water level and temperature detected by each sensor is input to the control unit of the electric actuator 14 .

When the electric actuator 14 is attached to the water tap 12, the body case 40 of the electric actuator 14 is placed on the cover 36 of the water tap 12, and the cover 36, the bearing 24, and the bottom wall of the body case 40 are connected. is bolted. 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 such a water supply device 10, for example, when the user uses a remote control terminal to transmit an operation instruction (control signal) indicating fully closed, fully opened, or an arbitrary degree of opening to the electric actuator 14, 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 rotating shaft 58 rotates together with the main gear 54. As shown in FIG. Thereby, a rotational force is applied to the valve shaft 34 of the water tap 12 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, the fully closed position, and the like. Further, the rotating shaft 58 of the electric actuator 14 vertically moves so as to pass through the shaft portion of the main gear 54 as the valve shaft 34 of the water tap 12 moves vertically.

By introducing such a system 100 to the farm field 102, the labor required for water management in the farm field 102 can be greatly reduced. may cause malfunctions. However, in the conventional technology, in order to remove the foreign matter from the water tap, it is necessary to remove the anti-scattering cover and the electric actuator, and there is a problem that maintenance is troublesome.

Therefore, in this embodiment, the cover 36 of the water tap 12 can take an exposed state in which the spout 26 is exposed, in addition to the splash prevention state in which the spout 26 is covered from the outside to prevent splashing of the water. As a result, foreign matter can be removed without removing the cover 36 and the electric actuator 14 . The configuration of the cover 36 will be specifically described below.

As shown in FIG. 3, the cover 36 is made of a flexible material such as silicone rubber and fluororubber and has a truncated tubular shape. Specifically, the cover 36 includes a disk-shaped top plate portion 36a and a cylindrical side wall 36b extending downward from the peripheral edge portion of the top plate portion 36a. In addition, an outwardly protruding flange is formed at the lower end of the side wall 36b, and two semicircular grips 36c protruding in opposite directions are formed on this flange.

Moreover, the side wall 36b has a crease extending in the circumferential direction, and is formed so as to expand downward in a stepped manner. As shown in FIG. 5, the side wall 36b can be folded in the axial direction so as to gather on the top plate portion 36a side by mountain-folding or valley-folding along the fold line. At this time, the side wall 36b is folded so that peaks and valleys are aligned in the radial direction. As a result, the side wall 36b can stably hold the folded shape because the force that tends to expand the bent portion of the side wall 36b acts in the radial direction.

It should be noted that it is not always necessary to manufacture a special member for the cover 36, and a commercially available folding bowl or the like, which is a kitchen utensil, can be used instead.

Such a cover 36 is detachable (replaceable) from the valve box 20 by screwing the top plate portion 36a to the zenith portion (bearing 24 in this embodiment) of the valve box 20 of the water tap 12. Fixed. Normally, as shown in FIGS. 1 to 3, the cover 36 is used with the side wall 36b extended (anti-scattering state) and covers the periphery of the spout 26 to prevent water from scattering. On the other hand, during maintenance or inspection of the water tap 12, the cover 36 is deformed into a state in which the side walls 36b are folded (exposed state), as shown in FIG. As a result, the spout 26 is exposed.

Switching (deformation) between the scattering prevention state and the exposed state of the cover 36 can be performed by a simple operation of gripping the lower end of the grip portion 36c or the side wall 36b and lifting or pulling it down. That is, when the water tap 12 is clogged with foreign matter and maintenance is performed, the spout 26 can be easily exposed, and the clogged foreign matter can be easily removed.

As described above, according to this embodiment, the cover 36 can take an exposed state in which the spout 26 is exposed, that is, the spout 26 can be exposed without removing the cover 36. Maintenance of the water tap 12 can be easily performed even if the foreign matter clogs the water tap 12.例文帳に追加

The effects as described above are particularly remarkable in the water supply device 10 in which the electric actuator 14 is attached on the water tap 12 and the system 100 including the water supply device 10 . This is because it is possible to omit the time-consuming work of removing and reinstalling the electric actuator 14 (removing and attaching the electric actuator 14) during maintenance of the water tap 12. FIG.

In the above embodiment, the side wall 36b of the cover 36 of the water tap 12 is formed in a cylindrical shape.

Moreover, in the above-described embodiment, the cover 36 can hold the exposed state (folded shape) by itself, but the present invention is not limited to this. For example, the side wall 36b of the cover 36 may be formed in a bellows shape like a lantern or an accordion so that the peaks and valleys are axially aligned and folded. In this case, even if the cover 36 is in the exposed state, the cover 36 hangs down. Alternatively, without providing a fastener, the operator may lift the cover 36 with one hand to expose it and remove the foreign matter with the other hand.

Furthermore, in the above embodiment, the cover 36 is exposed by folding the side wall 36b in the axial direction, but the mode in which the cover 36 can be in both the shatterproof state and the exposed state is not limited to this. .

For example, as in the embodiment shown in FIG. 6, the cover 36 is made of a flexible elastic material such as rubber to form a ridged cylinder (dome shape), and the cover 36 is turned upside down (inverted) to prevent scattering. The state (the state of FIG. 6A) may be transformed into the exposed state (the state of FIG. 6B).

Further, for example, although not shown, the cover 36 may be formed in a sheet shape (curtain shape) and wrapped around the valve box 20 so as to cover the spout 26 . In this case, the cover 36 is deformed into an exposed state by turning it over.

In the above-described embodiment, the valve box 20 of the water tap 12 is formed by integrally molding the support 28 with the valve box main body 22. However, the valve box main body and the support, which are separate members, may be combined. The valve body may be formed by In addition, the strut portion and the bearing may be integrally molded.

Furthermore, in the above-described embodiment, the water faucet 12 has an opening/closing mechanism in which the valve shaft 34 and the valve body 32 move up and down as the valve shaft 34 rotates. It is also possible to adopt a mechanism in which the valve body (float valve) rises due to buoyancy and comes into close contact with the valve seat due to water pressure to stop water.

Further, the water tap 12 does not necessarily need to be used in combination with the electric actuator 14, and may be used in a manner of being manually opened and closed, for example, by attaching a handle to the coupling portion 34a.

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

DESCRIPTION OF SYMBOLS 10...Agricultural water supply apparatus 12...Agricultural water tap 14...Electric actuator 20...Valve box 26...Spout 30...Valve seat 32...Valve element 34...Valve shaft 36...Splash prevention cover 100...Agricultural water supply system 104...Water for use pipeline

Claims (6)

An agricultural hydrant for supplying water to a field,
valve box,
a valve body capable of opening and closing a water passage in the valve box;
a spout formed in the valve box for discharging the service water to the outside of the valve box; A hydrant for agriculture, comprising a scattering prevention cover capable of taking a scattering prevention state for preventing the water from scattering and an exposed state for exposing the spout. The agricultural hydrant according to claim 1, wherein the shatterproof cover has a cylindrical side wall that can be folded in the axial direction, and the exposed state is achieved by folding the side wall. 2. The water tap for agriculture according to claim 1, wherein said anti-scattering cover is formed in a cylindrical shape from an elastic material having flexibility, and becomes said exposed state by being turned over. 2. The water tap for agriculture according to claim 1, wherein said anti-scattering cover is formed in a sheet shape, is attached so as to be wrapped around said valve box, and is brought into said exposed state by being turned over. An agricultural water supply device for supplying water to a field,
The agricultural water tap according to any one of claims 1 to 4 , and an agricultural water supply apparatus comprising an electric actuator mounted on the agricultural water tap and driving a valve element of the agricultural water tap. An agricultural water supply system for supplying water to a field,
An agricultural water supply system, wherein the agricultural water supply device according to claim 5 is attached to the upper end portion of the riser pipe portion of the water pipeline in the field.

Images