JPH018114Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an automatic irrigation device for pot cultivation.

In general, the amount of water consumed by pot-grown plants varies depending on the size of the plant, especially the leaf area. However, conventionally used automatic watering devices mainly use timers and solenoid valves to water at fixed times and fixed amounts according to plants in specific pots representing a group of pots, but such devices do not allow accurate moisture management. On the other hand, if you want to manage moisture accurately,
By placing individual pots on a platform and converting the weight loss into an electrical signal to activate a solenoid valve, or by sensing the dryness of soil moisture with a tension meter filled with water and transmitting it to a solenoid valve. have also been adopted, but these have disadvantages such as an electrical system intervening in the device, making the device complicated.

The purpose of the present invention is to improve such inconveniences, and to provide a device that uses a tension meter and can automatically irrigate water without intervening an electrical system.

To explain this with reference to the illustrated embodiment, 1 represents a pot, 2 represents a tension meter, and the meter 2 represents a tension meter.
The pot is formed with a sealed water pipe that encloses water and has a porous cup 3 at the end, and is buried in the soil in the pot 1 so that the porous cup 3 is buried, and a branch pipe 4 is installed above it. The tube was branched, and a bellows blind tube 5 was connected to the tip of the branch tube 4. The bellows pipe 5 is suspended from above in a support pipe 7 erected on the water passage 6, and a needle valve type on-off valve 8 is attached to the tip thereof, and a valve hole 9 is opened and closed by the on-off valve 8. A valve chamber 10 is formed in the support tube 7 and is separated from the water flow channel 6 through the valve chamber 10. A water supply channel 11 having one end open to the valve chamber 10 is disposed on the pot 1, and a nozzle 12 is provided at the other end. Established. Note that even if the bellows blind pipe 5 does not contract due to soil moisture tension, the on-off valve 8 is applied as water pressure from the head of the irrigation system of the water passage 6 and the valve hole 9 opens, so this is eliminated. In order to do this, the on-off valve 8 is pressed into the valve hole 9 with a spring 13. Therefore, the on-off valve 8
Since it is not possible to determine the start time of irrigation due to the change in head due to the positional relationship between the water tank and the height of the water tank, one way to adjust this is to adjust the branch pipe 4 vertically with respect to the support pipe 7 to determine the start time of irrigation. did.

Next, to explain its operation, when the soil moisture content in pot 1 decreases, the soil moisture tension increases, and on the other hand, the ratio of the tension of tension meter 2, which is a sealed water pipe system, to the soil moisture tension changes. , water is sucked out from the porous cup 3. The spring 13 contracts at the same time as the bellows blind pipe 5 connected to it by the amount of the weight loss, and the on-off valve 8 connected thereto opens the valve port 9, and the water in the water passage 6 flows into the valve chamber 10 and the water supply water passage 11.
water is applied to the inside of the pot 1 from the nozzle 12 at the tip of the pot 1, and the movement of water in the pot 1 moves to the lower layer, and when it reaches the outer circumferential surface of the porous cup 3 and the buried stratigraphic soil, the soil moisture content increases. As the amount of water increases, the soil water tension decreases, and due to the restoring force of the contracted bellows blind pipe 5 and spring 13, the reduced amount of soil water returns into the tension meter 2 through the outer circumferential surface of the porous cup, and the on-off valve 8 closes the valve hole 9 to stop the water in the water passage 6, and at the same time automatically stops the irrigation from the water supply channel 11.

In this way, according to the present invention, the porous cup 3 attached to the end of the tension meter 2 filled with water is buried in the soil in the pot, and the bellows blind pipe 5 is connected to the tension meter.
An on-off valve 8 for opening and closing the water supply channel 11 is connected to the terminal of the water supply channel 11, and the valve hole 9 is opened and closed by the vertical movement of the bellows blind pipe 5 and the on-off valve 8 as the soil moisture tension changes. It is possible to accurately manage the moisture in the pot without using an electrical system as in the conventional example, and since the bellows blind tube 5 has excellent responsiveness, the opening/closing valve 8 can be opened and closed appropriately. It has the effect of

[Brief explanation of the drawing]

The drawing is a schematic diagram showing an embodiment of the present invention. 1...pot, 2...tension meter, 3...
... Porous cup, 5 ... Bellows blind tube, 8 ... Opening/closing valve.

Claims (1)

[Scope of utility model registration request] A tension meter 2 filled with water and having a porous cup 3 at its end is buried in a pot 1 having a nozzle 12 connected to a water supply channel 11 disposed above so that the porous cup 3 is buried. An automatic irrigation system for pot cultivation characterized in that a bellows blind pipe 5 is connected to a meter 2, and an on-off valve 8 for opening and closing the water supply channel 11 is attached to the bellows blind pipe 5.