JPS591725Y2 - Agriculture and horticultural watering equipment - Google Patents

Description

[Detailed description of the invention] This invention relates to an agricultural or horticultural watering device for watering a wide area.

An example of a conventional and very common water sprinkler system for sprinkling water over a wide area is the one shown in FIG.

This watering device is provided with a group of watering nozzles 1, a water distribution pipe 2, and a solenoid valve 3 that controls the flow or stop of the water pipe 2 for each area of an appropriate size that divides the watering area, and operates each solenoid valve 3. In order to do this, an electric wire 5 is connected between each electrode valve 3 and a timer 4 connected to a power source (not shown).

Each solenoid valve 3 is of a normal type, and during the watering period, the solenoid valve 3 is energized by a timer 4 to open and spray water sent out by a pump 6 etc. from the nozzle group 1. be.

According to such a device, when the area to be watered is widened, the cost of the electric wire 5 itself and the cost of its wiring work can sometimes reach more than 20% of the total equipment cost, and when the watering time becomes long, the solenoid valve 3 is connected continuously during watering. It has drawbacks such as non-negligible power consumption since it is energized.

The agricultural and horticultural watering device of this invention eliminates the above-mentioned drawbacks, reduces equipment costs and operating costs, prevents water hammer, and facilitates installation into existing watering pipes. The purpose of this system is to divide a wide area into areas so that each area can be freely sprinkled with water at different times.In order to spray water into multiple areas at desired times, water pipes are used to carry a group of watering nozzles installed in each area. A motor-operated valve was installed in the valve, which was energized only when the valve was opened or closed, and each motor-operated valve was powered by a battery, and a timer was interposed between the battery and the motor-operated valve, and the battery and timer were installed in each area. It is characterized by

This invention will be explained below with reference to the drawings.

In FIG. 2, 11 is a storage tank, 12 is a pump, and 13 is a water pipe communicating with the water storage tank 11 and the pump 12.

The distal end side of the water pipe 13 communicates with a group of water spray nozzles 14 such as a plurality of sprinklers via a plurality of electric valves 15, which will be described in detail later.

Each watering nozzle group 14 is installed in several appropriately sized areas that divide a wide watering area such as a large-scale agricultural or horticultural greenhouse, and the electric valve 15 is also installed at least in each watering area. Provide one.

Furthermore, near each electric valve 15, there is a battery 16 that serves as a power source, and a timer that can set the day of the week and time so that watering can be performed at a desired time, and automatically closes an electric circuit when watering starts and stops. 17 will be installed.

The electric valve 15 used in this invention is of a type that is energized only when the valve is opened or closed, and an example of an automatic ball valve will be explained with reference to FIG.

Here, 18 is the motor, 19 is the reducer, 20 is the valve body,
21 is a spherical valve body that opens and closes the flow passage 22; 23 is a reducer 1;
This is a shaft joint that connects the output shaft of 9 and the operating shaft of the spherical valve body 21.

A cam 2 having a circular planar shape is provided at the center of the shaft joint 23.
4 is fixed.

This cam 24 has a circumferential surface 24 as shown in FIG.
Two grooves 24 b, 2 are spaced apart by 180° in a.
4C, and two changeover switches L"Si and L'S provided around the cam 24 at 90° intervals.
Operate 2.

In each changeover switch L''S1.L'S2, a rotor 25 attached to the tip of the operating piece rolls along a cam 24a as the motor is driven and falls into the grooves 24b and 24C, thereby switching the contact point. It will be done.

An example of an electric circuit for operating the electric valve 15 having the above structure is shown in FIG.

The electric valve 15, battery 16 and timer 17 are connected in series, M-3w is the main switch, T-3w' is the output switch of the timer 17, and F is the fuse.

Next, the operation of the sprinkler system of this invention will be explained with reference to FIGS. 3 to 5.

Each of these figures shows the state when watering is stopped.

When the watering start time is reached, the timer 17 is activated, the switch T-5w is switched to the open side, and the motor 18 of the electric valve 15 is energized through the switches L and S2, so the valve body 21 begins to rotate. Rotate 90° to fully open the valve.

At this time, the switch L that was on the circumferential surface 24a of the cam 24
-32's trochanter 25 fits into the groove 24b of the cam 24, so the switches L and S2 switch to automatically cut off the current.

At this point, the motor 18 stops, but since the valve body 21 maintains an open state with its opening 21a aligned linearly with the flow path 22, watering continues until the stop time preset by the timer 17 is reached.

On the other hand, the switch L''Sh has its trochanter 25 connected to the cam 24.
At the beginning of the rotation, it comes off from the groove 24b and comes to be located on the circumferential surface 24a, and is automatically switched.

When the time to stop watering is reached, the timer 17 is activated, switch T-3w is switched to the closed side, and switch L is turned on.
Since the motor 18 of the electric valve 15 is energized through S1, the valve body 21 begins to rotate and rotates 90', thereby closing the valve.

At this time, the switch L that was on the circumferential surface 24a of the cam 24
Since the trochanter 25 of the cam 24 fits into the groove 24C of the cam 24, the switch L-3 switches to automatically cut off the current.

At this point, the motor 18 stops, but the valve body 21
2 remains closed and watering stops.

On the other hand, the switches L and S2 are automatically switched because their rotors 25 are removed from the grooves 24b and positioned on the circumferential surface 24a at the beginning of the rotation of the cam 24.

By repeating this operation, the electric valve 15 is automatically opened at a desired time to perform continuous water sprinkling.

According to the agricultural and horticultural watering device of this invention described above, the amount of expensive electric wires used can be significantly reduced, and the amount of electricity consumed to operate the electric valve 15 is also small. It is possible to achieve reductions in equipment costs and operating costs and to improve economic efficiency.

Further, the use of the electric valve 15 is effective in preventing water hammer because it makes it easy to take a long time to open and close the valve in this type of water sprinkler system where piping is long and water hammer is likely to occur.

Furthermore, since the entire device can be compactly assembled for each watering area, it can be easily attached to existing watering pipes, and by setting each timer 17 arbitrarily, water can be freely sprayed at different times for each area. It has many practical advantages, such as making it possible to

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing a conventional agricultural and horticultural watering device; FIG. 2 is a schematic diagram showing the agricultural and horticultural watering device of this invention;
Fig. 3 is a longitudinal sectional front view showing an example of an electric valve used in the water sprinkling device of this invention, Fig. 4 is a plan view of the cam portion taken along line IV-IV in Fig. 3, and Fig. 5 is the water sprinkling device of this invention. FIG. 2 is a circuit diagram showing an example of an electric circuit employed in the present invention.

Claims (1)

[Scope of utility model registration request] In order to sprinkle water on a plurality of areas at a desired time, electric valves 15 are provided in the water pipes 13 of the water spray nozzle groups 14 installed in each area to energize only when the valves are opened and closed.
The battery 16 is used as a power source, and the battery 1
6 and the electric valve 15, and the battery 16 and the timer 17 are respectively installed in each area.