JPH1033074A - Automatic watering type planter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic watering type planter unnecessitating worry over the exudation of water from the bottom of the planter, difficult to cause the generation of root rot due to the excessive supply of water, and no blighting a plant, even when the water is not periodically supplied. SOLUTION: This automatic watering type planter comprises a planter 1 in which soil 2 is charged to culture a plant, a porous pipe 3 which is horizontally embedded in the bottom part of the container of the planter 1 and whose one end is closed, a water tank 9 disposed at a lower place than the planter 1, and a siphon pipe style water supply pump 6 equipped with a check-valve and used for allowing the opened end side of a porous pipe 3 to communicate with the bottom part of the water tank. Therein, the siphon pipe part of the water supply pump 6 and the check-valve 7 are arranged at higher positions than the porous pipe 3 embedded in the planter 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a negative pressure type automatic irrigation type planter utilizing the power of a plant root to suck a plant planted in the planter.

[0002]

2. Description of the Related Art As an irrigation method for plants planted in a planter (flowerpot), an intermittent irrigation method using positive pressure water that supplies water from above the soil is used. In the cultivation of plants such as fields, the porous pipe is located in the root group area of the cultivated crop, and the porous pipe is provided upright in parallel with the water supply pipe communicating with the water source capable of transition control. A negative pressure difference irrigation method characterized by being buried in cultivation soil and exuding water from the porous tube into the root region of the cultivated crop by a negative pressure difference between water inside and outside the porous tube has been invented. (Tokufair 0
3-56689).

[0003]

In the method of watering directly from the top of the planter, attention must be paid to the intermittent time and the amount of irrigation per time. If the intermittent time becomes too long, the plants die. If you overdose or water too much, you may fail to grow plants due to root rot. In addition, if water is excessively applied, water may come out from the drain hole at the bottom of the planter and ooze out. In order to prevent such a phenomenon, a method has been adopted in which a tray is provided at the bottom of the planter to receive the exuded water.However, in such a method, water is accumulated at the bottom of the planter, so that root rot occurs instead. There is a disadvantage that it is easy. Negative pressure irrigation is suitable for large-scale cultivation,
Since it is necessary to install a water pipe and use a float valve, a water level adjustment tank, etc., it is not suitable for small-scale plants such as planters, and was installed in a soil water planter near saturation. In such a case, there is an inconvenience that the porous pipe is clogged by the fine water flowing backward by the turbid water. Further, in the conventional planter, the plants absorb water every day, and if they are not regularly watered, they will die and it is difficult to leave their homes. In addition, we adopt siphon pipe method, but air enters between tank and porous pipe of planter from tank,
There is an inconvenience that it takes time until the negative pressure absorbing action of the plant occurs. Therefore, the present invention has been made in view of the drawbacks of the conventional technology, there is no fear of water seeping out from the bottom of the planter, root rot due to overwater hardly occurs, and even if you are away for several days An object of the present invention is to provide an automatic watering type planter that does not die.

[0004]

That is, the present invention relates to a planter in which soil is filled into a plant for cultivating a plant, and a porous tube horizontally buried in the bottom of the container of the planter and having one end closed. A water tank installed at a lower position than the planter, and a siphon pipe type water supply pump with a check valve that communicates between the open side of the porous pipe and the bottom of the water tank. An automatic irrigation type planter in which a siphon tube portion and a check valve are installed at a higher position than a porous tube embedded in the planter. The invention of claim 2 is an automatic watering type planter wherein the water supply pump is a manual type.

[0005]

In the planter according to the present invention, when the plant is planted, the water supply pump is temporarily operated to start the negative pressure differential irrigation in a state where the entire siphon tube is filled with water (a state in which air is removed). In general, the water tends to return to the tank via the siphon pipe because the water tank is set higher than the porous pipe. However, in the soil, there is a capillary negative pressure around the plant root area, which is higher than the negative pressure in the porous pipe, so that water is supplied to the soil through the porous pipe. Then, when the negative pressure in the capillary and the negative pressure in the porous pipe in the vicinity of the plant root area reach an equilibrium state, the water supply ends. As a result, excess water is not supplied to the planter, and the capillary around the plant root area near the porous pipe is less than the water pressure difference (negative pressure) due to the difference in height between the porous pipe and the water level in the tank. Water will be supplied as long as the negative pressure (maximum value) is large. When the water in the tank decreases with the supply of water and the negative pressure of the water exceeds the negative pressure of the capillary (maximum value), the water in the siphon tube tends to flow backward. Because of the mounting,
Water movement stops until water is supplied to the tank without backflow. In the case where the water supply pump is constituted by a manual type, air existing in the siphon pipe at the time of installation can be removed by manually operating the pump.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the illustrated embodiments. In the figure, reference numeral 1 denotes a planter having no hole at the bottom. The planter 1 is filled with soil 2 and a porous tube 3 one end of which is closed horizontally is buried in the soil. The other end of the porous pipe 3 is connected to a tubular pipe 4 penetrating the side wall of the planter 1. The tubular pipe 4 is connected to a standing pipe 5 and a check valve at an upper end of the standing pipe 5. And a pipe 4 connected to a side wall of the water supply pump 6 and a check valve 8 to form a part of a manual water supply apparatus a. . The check valves 7 and 8 are provided to suppress a backflow from the porous pipe 3 to the tank 9.

The upright pipe 5 of the manual water supply device a is fixed to a water tank 9 such that the tip is located at the bottom.
In the figure, 10 is a measure for checking the water level, and 11 is
A transparent pipe for checking the water level is connected to the water tank 9, and 12 is a lid of a container of the water tank. Reference numeral 13 denotes a variable water level supplied to the tank 9, and reference numeral 14 denotes a minimum water supply level at which water can be supplied to the planter 1 in the present apparatus. In the present embodiment, hq (15) represents the height of the porous pipe 3 embedded in the planter 1 from the minimum water supply level. h represents the height from the minimum supply water level 14 to the fluctuation water level 13.

As a result, it is necessary that h <hq, and the maximum water level of the tank 9 is lower than that of the porous pipe 3. Reference numeral 16 denotes a cultivated plant planted in the soil 2 of the planter 1, and 17 denotes a plant root area spread in the soil 2 of the cultivated plant 16. From the above, hq also varies depending on the type of soil put in the planter 1 and the ability of the root group 17 of the plant planted in the planter to suck up water, and is about 10 to 30 cm. It is preferable to use a porous tube having a water permeability of 10 ^-4 to 10 ^-5 cm / sec. And having an anti-permeability (penetration pressure resistance) of 100 cm-H ₂ O or more.

In the apparatus according to the present embodiment, the soil 2 is put in the planter 1 with the porous tube 3 buried in the planter 1, and appropriate plants (houseplants, fruits and vegetables, melons, etc.) are placed in the planter 1. The root group 17 is planted so as to be located around the pipe, and the tip of the standing pipe 5 of the manual water supply pump which is the water supply device a is located at the bottom of the tank 9 (the minimum water supply level 14).
(Below), and water is filled into the tank 9 up to the maximum water supply level. Next, by contracting the grip of the manual pump 6, the vertical pipe 5 and the tubular pipe 4 are adjusted so as to be filled with water, and irrigation is started. At this time, air is accumulated in the grip portion of the pump 6, but since the grip portion is in a sealed state, the function as the siphon tube is not affected.

At the beginning of the water supply, in the present embodiment, the water is supplied to the soil 2 of the planter 1 even when the capillary negative pressure around the plant root area is low because the water is located at the highest water supply level. At the beginning, the water supply state is such that water is supplied up to the height difference of the limit (hq) of the capillary negative pressure around the plant root area. In this embodiment, when the planter 1 is lifted for some reason during the water supply or when the water is excessively supplied to the planter 1, the pressure difference is reversed and the water flows from the porous pipe 3 toward the water supply pump 6. However, in the feed pump 6 according to the present embodiment, the check valves 7 and 8 are provided at the connection portions with the pipes 4 and 5, so that the backflow is suppressed, and the porous pipe 3 is made of turbid water. This prevents clogging. Further, in the present embodiment, the water supply pump is constituted by a manual type, but the present invention is not limited to this. If the water supply pump is temporarily driven to remove air from the siphon tube, a power supply type is used. You may comprise.

[0011]

As described above, in the planter according to the present invention, water is supplied from the lower tank to the planter by utilizing the negative pressure difference, and the water supply condition is adjusted by the root group of the plant. Since the water depends on the pressure, appropriate amount of water is supplied to the planter in an appropriate amount, so that root rot, death, and the like can be prevented. Furthermore, since the siphon tube connecting the planter and the tank is forcibly filled with water at the beginning of irrigation via the water supply pump, the irrigation can be provided immediately. In addition, since the check valve is mounted, it is possible to prevent the backflow due to lifting of the planter and direct water supply to the planter. Furthermore, since irrigation can draw water up to the marginal difference in capillary negative pressure, if it is initially set to the highest water level, it will not die even if left out for several days.

[Brief description of the drawings]

FIG. 1 is a front sectional view of a planter according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Planter 2 Soil 3 Porous pipe 4 Tubular pipe 5 Standing pipe 6 Water supply pump 7 Check valve 8 Check valve 10 Measure for water level check 12 Tank lid 13 Fluctuating water surface 14 Minimum water supply level 15 hq 16 Plant 17 Root group

Claims (2)

[Claims] 1. A planter in which soil is filled inside for cultivating a plant, a porous tube horizontally buried in a bottom portion of a container of the planter, one end of which is closed, and a lower position than the planter. A water tank and a siphon pipe type water supply pump with a check valve that communicates the open side of the porous pipe and the bottom of the water tank, wherein the siphon pipe part and the check valve in the water supply pump are An automatic watering type planter, which is installed at a position higher than a porous tube buried in the planter. 2. The automatic watering type planter according to claim 1, wherein said water supply pump is constituted by a manual type.