JPH0313849B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a gas-liquid mixed water supply device that uses an automatic air intake valve to mix a large amount of air into the water to be supplied.

For example, when growing cultivated crops, an appropriate amount of moisture,
It is well known that fertilizers and the absorption of solar heat are necessary, but in addition to this, supplying air (oxygen) to the soil where crops are to be grown increases the replenishment of organic matter in the soil. It makes it easier to grow crops, increases the effectiveness of fertilization, and sometimes allows continuous cropping, which can reduce agricultural costs. However, in conventional agricultural operations, it is not possible to supply an appropriate amount of air into the soil, making it impossible to take advantage of the above advantages.

The present invention has been developed in view of the above circumstances, and is capable of supplying air into the soil by including a large amount of air in the water to be irrigated. That is, to describe the present invention specifically, high-oxygen dissolved water (gas-liquid mixed water) is obtained using an automatic air intake valve, and this high-oxygen dissolved water is directed into the soil through a nozzle inserted into the soil. It is an object of the present invention to provide a water supply device capable of spouting gas-liquid mixed water.

The present invention will be explained in detail below based on embodiments shown in the drawings.

1 is a water tank; 2 is a pump for pumping water stored in the water tank 1; a water intake pipe 3 and a water discharge pipe 4 are connected to the pump 2; 5 is an automatic air suction valve attached to this water suction pipe 3 for containing an appropriate amount of air into the water pumped by the pump 2 to create gas-liquid mixed water. The structure will be described later. Reference numeral 6 denotes a pressurized tank that pressurizes the gas-liquid mixed water supplied through the water discharge pipe 4. The adjustment makes the bubbles in the pressurized tank 6 finer, and the mixture of water and air is further trapped. 7 is a pressure gauge provided in the pressurized tank 6, and 8 is an automatic air bleed valve for discharging air out of the tank when the pressure in the pressurized tank 6 decreases and gas and liquid separate, for example, when the pump is stopped. be. The structure of this automatic air bleed valve 8 will be described later. Reference numeral 9 denotes a lead-out pipe connected to the pressurized tank 6, and this lead-out pipe 9 is connected to a main water supply pipe 11 via a tank internal pressure adjustment and water volume adjustment valve 10. An automatic air bleed valve 8 having the same structure as the above-mentioned automatic air bleed valve 8 is installed at a suitable position on the main water supply pipe 11.
A pressure-adjustable automatic drain valve 12 is attached to the tip of the drain valve 1 . Moreover, a large number of branch pipes 14 embedded in the soil 13 are attached to the main water supply pipe 11, so that water can be applied into the soil from the tips of the branch pipes 14. The main water supply pipe 11 and the branch pipes 14 can be attached to the shapes shown in Fig. 2 A, B, and C, and depending on the type of cultivated crops, ,
The vicinity of the surface of the soil 13 may be irrigated.

Next, the structure of the automatic air suction valve 5 will be explained based on FIG. 3. 5a is a valve frame,
This valve frame 5a has a pump discharge pressure inlet 5.
b, an air inlet 5c, and an air outlet 5d communicating with the air inlet 5c.
Incidentally, the air outlet 5d is screwed onto the water suction pipe 3 and communicated therewith. Further, inside the valve frame 5a, a piston valve 5e for opening and closing a passage 5f communicating the air inlet 5c and the air outlet 5d is slidably installed, and furthermore, this piston valve 5e is equipped with a spring. The passage 5f is always closed by an elastic force of 5g. The piston valve 5e has a pressure receiving surface 5h, and when the hydraulic pressure supplied from the pump discharge pressure inlet 5b is applied to the pressure receiving surface 5h, the piston valve 5e is pushed up against the elastic force of the spring 5g. , this allows passage 5f
is opened, air from the air inlet 5c is sucked in by negative pressure in the pump suction pipe, and is led out from the air outlet 5d. 5i has 5g spring
5g is an adjustment screw for adjusting the air supply amount. Therefore, the pump discharge pressure inlet 5b of the automatic air suction valve 5 is connected to the discharge port side of the pump 2 through the conduit 15, and the air outlet 5d of the automatic air suction valve 5 is connected to the discharge port side of the pump 2 via the conduit 15.
is connected to the suction port side of the pump 2. Therefore, when the drive motor 16 of the pump 2 is driven, the pump 2
Due to the rotation of the pump, the discharge pressure of the pump is applied to the pressure receiving surface of the piston valve 5e in the automatic air suction valve 5, so that the piston valve 5e is pushed up, and thereby air is released to open the passage 5f. , water is supplied into the pump 2 through the air inlet 5c and the air outlet 5d, and water mixed with air, that is, gas-liquid mixed water, is supplied into the pressurized tank through the water discharge pipe 4. If it is desired to change the mixing ratio of the mixed air, this can be done using the air amount adjustment screw 5j.

The automatic air bleed valve 8 automatically opens when the gas and liquid in the pressurized tank 6 and main water supply pipe 11 are separated, and only exhausts air, and the pressure-adjustable automatic drain valve 12 When the water pressure in the main water supply pipe 11 rises above a set value, the valve automatically opens to drain water. can be used selectively. Therefore, the outline of the automatic air bleed valve 8 and the pressure-adjustable automatic drain valve 12 shown in this embodiment is shown in the fourth section.
This will be explained with reference to FIG. That is, the automatic air bleed valve 8 shown in FIG. 4 has a frame 8c having an air supply port 8a and an air discharge port 8b, and a float 8d connected to the frame 8c. Arm 8e and this arm 8e
It has a valve body 8f attached to the
If liquid enters following the air separated from the air supply port 8a of the frame 8c, the float 8d
is pushed up, and then the valve body 8f is pushed up by the lever action of the arm 8e accompanying the movement of the float 8d.
is raised, the valve is closed, and exhaust or drainage from the discharge port 8b is stopped.

The pressure adjustment type automatic drain valve 12 shown in FIG. It has a valve 12e that closes the water inlet 12a, and when the water pressure applied to the water inlet 12a of the frame 12c increases, this water pressure resists the elastic force of the pressure spring 12d. Valve 1
2e is opened and water under abnormal pressure is discharged from the water outlet 12b.

The above is the configuration of the device according to this embodiment.
Next, to describe its operation, when the motor 16 is driven to rotate the pump 2, the water in the water tank 1 is pumped up, and the water mixed with air is pumped up by the action of the automatic air intake valve 5. That is, gas-liquid mixed water is supplied into the pressurized tank 6 through the pump water discharge pipe 4. Due to the pressurizing action of the gas-liquid mixed water introduced into the pressurized tank 6, the air bubbles mixed in the water are further made finer, the mixture of water and air is trapped, and air is mixed. The water becomes a gas-liquid mixture.

Implementation data The amount of dissolved oxygen is around 6PPM in normal water at 20℃. On the other hand, the gas-liquid mixed water of the present invention
It will be around 10PPM, which is much higher than the saturation concentration of 8.84PPM. In other words, the reason why the amount of dissolved oxygen in the gas-liquid mixed water is detected to be higher than the saturation concentration is because fine particulate air is mixed into the liquid.
The concentration approaches saturation in around 10 minutes.

In this way, the gas-liquid mixed water with fine air bubbles mixed therein passes through the main water supply pipe 11, is injected from each branch pipe 14, and is irrigated into the soil 13, so it is difficult to use water with a high amount of air mixed in. Can be irrigated. If gas-liquid separation of the gas-liquid mixed water in the pressurized tank 6 and the main water supply pipe 11 occurs during this irrigation (mainly when the pump is stopped and at the tip of the main pipe),
Only air is discharged by the action of the automatic air bleed valve 8, and the gas-liquid mixed water can always be supplied uniformly. or,
When the amount of water discharged by the branch pipe 14 increases and the pump supply amount increases, and the pressure within the main pipe 11 rises to a constant pressure, the pressure-adjustable automatic drain valve 12 operates to drain the surplus water supply, thereby preventing danger. It is possible to maintain stable and uniform irrigation conditions.

As described above, the present invention is capable of pumping gas-liquid mixed water mixed with air supplied from a pump and an automatic air suction valve installed in a pump suction pipe into a pressurized tank (using a discharge pipe and a main pipe without installing a tank). The air is further refined to form high-oxygen dissolved water, which is then passed through the main water supply pipe 11 and watered from each branch pipe 14. Therefore, the gas-liquid mixture ejected from each branch pipe 14 is The high dissolved oxygen and finely divided gases contained in water have the effect of accelerating the replenishment of organic substances contained in the soil and making it easier to grow cultivated crops. Although the above description is an example of agricultural irrigation, the present invention is not limited to this, and can also be used for, for example, aquaculture. In this case, depending on the conditions of use, etc., it is possible to carry out the process without using the branch pipe 14, the automatic air bleed valve 8, and the pressure-adjustable automatic drain valve 12.

[Brief explanation of the drawing]

The drawings all show embodiments of the present invention, and Fig. 1 is an overall explanatory diagram of the gas-liquid mixed water irrigation system, and Fig. 2 A, B, and C are explanatory diagrams showing the positional relationship between the main pipe and branch pipes. , FIG. 3 is a sectional view of the automatic air suction valve, FIG. 4 is a sectional view of the automatic air vent valve, and FIG. 5 is a sectional view of the pressure-adjustable automatic drain valve. 1... Water tank, 2... Pump, 3... Water suction pipe, 4
...Water pipe, 5...Automatic air suction valve, 5a...Valve frame, 5b...Discharge pressure inlet, 5c...Air inlet, 5d...Air outlet, 5e...Piston valve, 5f... Passage, 5g...Spring, 5h
...Pressure receiving surface, 5i...Adjustment bolt, 5j...Adjustment screw, 6...Pressure tank, 7...Pressure gauge, 8...
Automatic air release valve, 8a...Air supply port, 8b...
Air discharge port, 8c...Frame, 8d...Float, 8e...Arm, 8f...Valve body, 9...Outlet pipe, 10...Water flow rate adjustment valve, 11...Water supply main pipe, 12...Pressure adjustment Type automatic drain valve, 12a...
Water inlet, 12b...Water outlet, 12c...Frame, 12d...Press spring, 12e...Valve, 13
...Soil, 14...Branch pipe, 15...Conduit, 16...
…motor.

Claims (1)

[Claims] 1. A pump for pumping water, an automatic air intake valve that is attached to the water suction pipe connected to this pump and mixes air into the pumped water, and this automatic air intake valve pressurizes the gas-liquid mixed water mixed with air. A pressurized tank, a main water supply pipe for supplying the gas-liquid mixed water pressurized by the pressurized tank, and a plurality of outlets connected to the main water supply pipe and spouting out the gas-liquid mixed water in the main pipe. An automatic air bleed valve is installed on the main water supply pipe, the main water supply pipe, and the pressurized tank to automatically discharge the air separated from the gas-liquid mixed water to the outside of the pipe. A gas-liquid mixed water supply device characterized by being equipped with a pressure-adjustable automatic drain valve that keeps the pressure of the gas-liquid mixed water constant in the main water supply pipe.