JP3162422U - Multistage liquid storage device with automatic liquid replenisher - Google Patents

Abstract

An energy saving and inexpensive multi-stage liquid storage device with an automatic liquid replenisher is provided. A liquid inlet 19 that can be sealed, a sealed liquid tank having a vent 15 at the top, an outflow pipe 25 that opens to the bottom of the tank, and overflow ports 36a and 36b to which overflow pipes 35a and 35b are connected. The uppermost storage container includes a plurality of liquid storage containers 30a and 30b installed lower than the tank and the vent pipe 14 connected to the vent and having the other end branched to the number of the storage containers. One opening of the branched vent pipe is disposed below the overflow port of the storage container, and the outlet pipe outlet 24 is disposed further below the branch vent pipe openings 33a and 33b. In the next storage container immediately below, the overflow pipe outlet 37a of the uppermost storage container is placed and another opening of the branch vent pipe is disposed below the overflow opening of the storage container. The storage container in the lower position in order And overflow tube outlet of the storage container on ingredients, an opening of the branch gas pipes, arranged similarly to the next stage reservoir. [Selection] Figure 1

Description

The present invention relates to a multistage liquid storage device with an automatic liquid replenisher that is energy-saving and inexpensive.

  Conventionally, various stages of liquid storage devices in which liquid is automatically replenished or supplied are known as described in the prior art documents. Looking at these, there are triggers for replenishing or supplying liquids, such as triggers based on the passage of time using a timer, detection of a drop in liquid level using a water level sensor or float valve, or a method of constantly operating a circulation pump instead of a trigger. . In addition, the replenishment method includes a method of supplying to the uppermost stage, causing the overflow to flow sequentially to the lower stage, and a method of supplying by opening / closing an electromagnetic valve or a float valve respectively installed in each water tank.

Considering these conditions under the conditions of low cost, energy saving, and water saving, the method of attaching a float valve or a solenoid valve to each tank, the method of operating the pump at all times, and the method of overflowing the bottom tank are not preferable. A device that is completely satisfactory has not been realized.

JP 2001-095375 A JP-A-11-243780 JP 2007-166911 A

An object of the present invention is to provide an energy saving and inexpensive multi-stage liquid storage device with an automatic liquid replenisher.

A closed liquid tank with a liquid inlet that can be sealed and a vent at the top, an outflow pipe that opens at the bottom of the tank, and an overflow that is connected to the overflow pipe. Using a container and a vent pipe connected to the vent and having the other end branched into the number of storage containers, one opening of the branched vent pipe is connected to the uppermost storage container from the overflow outlet of the storage container. The outlet pipe outlet is arranged further below the opening of the branch vent pipe, and the overflow pipe outlet of the uppermost storage container is connected to the next stage storage container immediately below the uppermost storage container. At the same time, the other opening of the branch vent pipe is arranged below the overflow port of the storage container. Thereafter, the storage container is placed in the lower position in order, and the overflow pipe outlet of the storage container immediately above is branched. Place one opening of the vent pipe in the same way as the next-stage storage container, Constituting the vessel with multistage liquid storage device.

In the present invention, the following effects can be obtained.
(1) The structure is simple and the introduction cost is very low.
(2) No external energy is required to replenish and supply liquids.
(3) If it is kept watertight and airtight, it operates stably and is maintenance-free.

FIG. 1 is a sectional view showing Embodiment 1 of the present invention. FIG. 2 is a sectional view showing a second embodiment of the present invention. FIG. 3 is a sectional view showing Embodiment 3 of the present invention. FIG. 4 is a sectional view showing Embodiment 4 of the present invention. FIG. 5 is a sectional view showing Embodiment 5 of the present invention. FIG. 6 is a sectional view showing Embodiment 6 of the present invention. FIG. 7 is a sectional view showing Embodiment 7 of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a first embodiment of the “multi-stage liquid storage device with automatic liquid replenisher” of the present invention, and shows a cross-sectional view in the case of two stages of liquid storage containers. The configuration is as follows. First, an airtight / watertight liquid tank 10 having a liquid inlet 19 with a lid for keeping airtight at the top and a vent 15 and having an outlet pipe 25 at the bottom is prepared. Next, two-stage storage containers 30 a and 30 b each having an overflow port 36 to which an overflow pipe 35 is connected are arranged at a position lower than the liquid tank 10. A siphon tube 21 is connected to the outflow tube 25, and the top of the siphon tube 21 is set slightly lower than the upper surface of the liquid tank 10.

A vent pipe 14 is connected to the vent 15 and the other end branches into the number of storage containers, that is, in this case, branches into two. In the uppermost storage container 30a, a branch vent pipe opening 33a is installed below the overflow port 36a, and a siphon pipe outlet 24 is installed further below the branch vent pipe opening 33a. The next-stage storage container 30b immediately below the storage container 30a is filled with the overflow pipe outlet 37a of the upper-stage storage container 30a, and the branch vent pipe opening 33b is installed below the overflow port 36b. By installing in this way, a “multi-stage liquid storage device with an automatic liquid replenisher” is configured. Note that the bottom overflow port and overflow pipe are not necessary unless there is a plan to add a storage container below.

After the installation of the device is completed, the liquid is supplied to the entire device for the first use. First, a liquid is injected into the liquid tank 10 from the liquid injection port 19. When the liquid tank liquid level 12 exceeds the top of the siphon tube 21, if the flow rate of the injected liquid is large, the excess liquid pushes the air in the siphon tube 21 and the siphon condition is established.
Next, when the liquid flows out from the siphon tube outlet, the lid of the liquid inlet 19 is closed. Even if the liquid injection is stopped, the branch vent pipe openings 33a and 33b are open and air flows into the liquid tank space 13, so that the liquid in the liquid tank 10 continues to flow out due to the siphon function.

Even if the liquid level 31a of the upper storage container blocks the branch vent pipe opening 33a by the liquid that has flowed out, the branch vent pipe opening 33b is still open because the next stage storage container 30b does not contain any liquid, and the outflow of liquid continues. When the upper storage container liquid level 31a exceeds the overflow port 36a, the liquid also flows into the next storage container 30b. When the liquid level 31b of the next-stage storage container 30b blocks the branch vent pipe opening 33b, the inflow of air into the liquid tank space 13 stops, but the liquid tank liquid level 12 is higher than the upper-stage storage container liquid level 31a. The liquid still flows out due to the pressure corresponding to the height.

Then, the pressure in the liquid tank space 13 becomes lower than the atmospheric pressure, and the liquid is sucked into the branch vent pipes 32a and 32b. When the liquid level of the sucked liquid, that is, the pressure corresponding to the height difference between the liquid level 34 in the branch vent pipe and the liquid level 31 of the storage container becomes equal to the difference between the pressure in the liquid tank space 13 and the atmospheric pressure, the outflow of the liquid Stop. At that time, the liquid level 34a in the branch vent pipe of the upper storage container 30a and the liquid level 12 in the liquid tank are the same height.

Although the liquid supply at the time of the first use is completed, the liquid level of the storage container at the completion of the supply is higher than the opening of the branch vent pipe. Therefore, the overflow port 36 of the storage container is higher than the liquid level at the completion of the supply. Must be a little above. The liquid level at the completion of the supply can be obtained as follows.

Comparing immediately before and after sucking the liquid into the branch vent pipe 32, the following is true.
(1) The total amount of the liquid increased in the storage container 30 and the liquid sucked into the branch vent pipe 32 is equal to the decrease amount of the liquid tank liquid 11.
(2) The total volume of the liquid tank space 13 immediately after the suction, the space of the vent pipe 14 and the branch vent pipe 32 is added to the volume of the space immediately before the suction by adding the reduced volume of the liquid tank liquid 11 and sucked into the branch vent pipe 32. The value obtained by subtracting the volume of the liquid obtained.
(3) The height of the water sucked up by the branch vent pipe 32 corresponds to the pressure difference between the atmospheric pressure and the liquid tank space 13.
By expressing and solving the above three events as equations, it is possible to calculate how much the liquid level at the completion of the supply rises from the position of the branch vent opening 33.

For example, the total liquid surface area of the plurality of storage containers 30 is twice the liquid surface area of the liquid tank 10, and the height from the position of the branch vent pipe opening 33 a of the upper storage container 30 a to the upper limit liquid level of the liquid tank 10 is high. The liquid level rise value in the case of 50 cm is about 3 mm at the maximum. The liquid level increase value decreases as the total liquid surface area of the plurality of storage containers 30 increases, and the height from the position of the branch vent pipe opening 33a of the upper storage container to the upper limit liquid level of the liquid tank 10 can be increased. Will grow.

Automatic replenishment is performed as follows. First, in the case where the liquid in the upper storage container 30a is low, when the liquid level 31a in the upper storage container is lowered and the branch vent pipe opening 33a is exposed to the air, the liquid in the branch vent pipe 32a flows down, and the liquid tank Air flows into the space 13 and the liquid flows out of the liquid tank 10. When the upper storage container liquid level 31a rises with the outflowed liquid and the branch vent pipe opening 33a is blocked, the liquid tank space 13 is replenished until the liquid outflow stops from the atmospheric pressure and the liquid outflow stops as described above. It will be.

Next, a case where the liquid in the container other than the upper storage container (here, the next storage container 30b) is reduced will be described. When the branch vent pipe opening 33b is exposed to the air, the air flows into the liquid tank space 13, so that the liquid flows out of the tank. The upper storage container liquid level 31a rises, and the liquid overflows from the upper storage container overflow port 36a and flows into the next storage container 30b. As a result, the liquid level 31b of the next-stage storage container rises, and when the branch vent pipe opening 33b is closed, the liquid is replenished until the liquid outflow stops as described above.

When the above replenishment is repeated, the liquid tank liquid 11 decreases, and when the liquid level 12 falls to the outflow pipe inlet 23, air flows into the siphon pipe 21 and the outflow stops. Therefore, the liquid inlet 19 must be opened to inject liquid into the liquid tank 10. During this injection, the liquid does not flow out until the liquid tank liquid level 12 exceeds the top of the siphon tube 21. Is the advantage.

Thus, in the present invention, if any one of the storage containers 30 has a liquid level 31 lower than the branch vent pipe opening 33, air flows into the liquid tank space 13 and the liquid 11 flows out. A closed circuit type automatic in which the pipe 35 sequentially flows into the storage container 30 arranged in series, blocks the branch vent pipe opening 33 exposed in the air, and the liquid tank space 13 becomes a negative pressure from the atmospheric pressure and the outflow stops. A control function is formed. No external energy is required for this function.

Even if the siphon tube 21 in the first embodiment is not provided, the automatic replenishment function operates. This is the second embodiment shown in FIG. However, since the liquid flows out when the liquid inlet 19 is opened and the liquid is poured into the liquid tank 10, the outflow pipe valve 26 for stopping the liquid is required. If the outflow pipe valve 26 is closed and the liquid is poured into the liquid tank 10 and the outflow pipe valve 26 is closed when the liquid tank 10 is full, the same functions as those in the first embodiment are performed.

A third embodiment shown in FIG. 3 is a cross-sectional view showing a configuration in a case where a liquid tank 10 without a liquid inlet 19 is used as a modification of the first embodiment. In this case, the siphon tube 21 having the siphon tube branching section 20 is used, and the injection pipe 18 is connected to the branching section 20 via the open / close valve 17 and connected to water.

When the opening / closing valve 17 is opened when there is no liquid in the liquid tank 10, the liquid flows down the siphon pumping pipe 22 and flows into the liquid tank 10. When the liquid tank liquid level 12 becomes the same height as the siphon tube branching portion 20, the liquid flowing in from the branching portion 20 also flows toward the top of the siphon tube 21. If the flow rate of the liquid from the injection tube is large, the air in the siphon tube 21 is pushed away. When the liquid flows out from the siphon tube outlet 24, the open / close valve 17 is closed. The liquid injection stops, but the liquid flows out from the liquid tank 10 because the siphon function is working. The rest functions as described in the first embodiment.

FIG. 4 is a cross-sectional view of Example 4 using a liquid tank 10 having two openings at the top but no outflow pipe. The fourth embodiment is configured as follows. That is, the siphon pumping pipe 22 of the siphon pipe 21 having the branching part 20 is inserted into one of the openings, and the inlet 23 is attached so as to open to the bottom of the liquid tank 10. An injection pipe 18 is attached to the branch portion 20 via an opening / closing valve 17 and connected to a water supply or the like. A vent pipe 14 is attached to the remaining one opening 15 via a float valve 16. The float valve 16 is installed at a position slightly lower than the top of the siphon tube 21. All openings are airtight and watertight. Other components are arranged and connected in the same manner as in the first embodiment.

When the on-off valve 17 is opened with this configuration, the liquid flows down the siphon pumping pipe 22 of the siphon pipe 21 and is injected into the liquid tank 10. When the liquid tank 10 is full, the liquid flows upward in the vent 15 and the siphon tube 21, and the float valve 16 is closed. After that, it flows only to the siphon tube 21 and flows out from the siphon tube outlet 24 beyond the top. If the flow rate of the liquid from the injection tube is large, the siphon condition of the siphon tube 21 is satisfied. Therefore, the on-off valve 17 is closed, but the liquid outflow from the siphon tube does not stop. The float valve 16 opens immediately after closing the open / close valve 17 and air flows in from the vent 15 so that liquid outflow continues. Thereafter, the same process as in Example 1 is followed.

Note that the float valve 16 in this configuration is not necessary in the following cases. That is, even if the highest part of the vent pipe 14 is higher than the top part of the siphon pipe 21 and the liquid flows into the vent pipe 14 and the liquid injection is stopped, the poured liquid flows out of the vent pipe and blocks the vent pipe. There is no. In such a case, the float valve may not be provided.

FIG. 5 is a cross-sectional view showing a fifth embodiment configured to automatically inject liquid into a liquid tank 10 from a liquid source such as water supply when the liquid in the liquid tank 10 becomes empty. Here, the opening / closing valve 17 having the configuration of the fourth embodiment is replaced with the injection pipe electromagnetic valve 17, and a liquid level detection unit surrounded by a broken line 27 including a sensor container 28 with a built-in float switch 29 is added. The control circuit is connected so that the injection pipe solenoid valve 17 opens when the pressure drops. The portion surrounded by the broken line 27 and the siphon tube 21 constitute an “outflow system connection type liquid level detection device” for which the applicant of the present invention has applied for a utility model registration separately.

When the apparatus having this configuration is used for the first time, when the control circuit is turned on, the float of the float switch 29 is lowered, so that the injection pipe solenoid valve 17 is opened and the liquid flows from the injection pipe 18. When the liquid flows into the sensor container 28, the float floats, the injection pipe solenoid valve 17 is closed, and the liquid injection is stopped. The subsequent automatic replenishment mechanism for the storage container is as described in the first embodiment.

Automatic liquid injection when the liquid tank liquid 11 becomes empty is performed as follows. When the liquid tank liquid level 12 falls below the siphon tube inlet 23, the liquid in the siphon tube 21 flows down, the liquid in the sensor container 28 also flows out, and the float of the float switch 29 also falls. As a result, the injection pipe electromagnetic valve 17 is opened, and the liquid flows from the injection pipe 18 into the liquid tank 10.

Although the previous example was a case of two storage containers, FIG. 6 shows a cross-sectional view of Example 6 in which Example 1 has three levels. However, the liquid tank portion is omitted. Thus, it is easy to increase the number of stages.

FIG. 7 is a schematic cross-sectional view showing a seventh embodiment in which a multi-stage (here, two-stage) liquid storage device of the present invention is used to irrigate a large number of potted plants arranged in two stages. The pipes 40a and 40b connected to the bottoms of the storage containers 30a and 30b are horizontally extended, and the necessary number of irrigation pipes 41a and 41b are started at an appropriate interval according to the size of the plant 44. The water absorbent cloth 42 is hung from the bottom of the pot 43 in which the plant 44 is planted, and the cloth is immersed in the irrigation pipe 41.

When the plant 44 sucks up water and the liquid level of the storage containers 30a and 30b falls and the branch vent pipe openings 33a and 33b are exposed to the air, water, nutrient solution and the like are supplied from the liquid tank 10 to the storage containers 30a and 30b. . If the automatic liquid injection function to the liquid tank 10 shown in the fifth embodiment is used, irrigation work for a large number of potted plants can be greatly saved.

In addition to low cost and energy saving, the structure is simple and there is almost no risk of failure, so it can be easily used for irrigation, etc. when many potted plants are placed on the veranda or store fronts. It can also be used effectively in large-scale cultivation businesses.

DESCRIPTION OF SYMBOLS 10 Liquid tank 11 Liquid in liquid tank 12 Liquid surface in liquid tank 13 Liquid tank space 14 Vent pipe 15 Vent 16 Float valve 17 Opening and closing valve, injection pipe solenoid valve 18 Injection pipe 19 Liquid inlet 20 Siphon pipe branching part 21 Siphon pipe 22 Siphon pumping pipe 23 Siphon pipe inlet, outflow pipe inlet 24 Siphon pipe outlet, outflow pipe outlet 25 Outflow pipe 26 Outflow pipe valve 27 Outflow system connection type liquid level detection device detector 28 Sensor container 29 Float switches 30a, 30b, 30c Reservoir 31a, 31b, 31c Reservoir liquid level 32a, 32b, 32c Branch vent pipe 33a, 33b, 33c Branch vent pipe opening 34a, 34b, 34c Branch vent pipe inner liquid level 35a, 35b, 35c Overflow pipe 36a, 36b 36c Overflow port 37a, 37b, 37c Overflow tube outlet 40a, 40b Pi 41a, 41b irrigation pipe 42 water-absorbing cloth 43 pot 44 plant

Claims (1)

A closed liquid tank with a liquid inlet that can be sealed and a vent at the top, an outflow pipe that opens at the bottom of the tank, and an overflow that is connected to the overflow pipe. Using a container and a vent pipe connected to the vent and having the other end branched into the number of storage containers, one opening of the branched vent pipe is connected to the uppermost storage container from the overflow outlet of the storage container. The outlet pipe outlet is arranged further below the opening of the branch vent pipe, and the overflow pipe outlet of the uppermost storage container is connected to the next stage storage container immediately below the uppermost storage container. At the same time, the other opening of the branch vent pipe is arranged below the overflow port of the storage container. Thereafter, the storage container is placed in the lower position in order, and the overflow pipe outlet of the storage container immediately above is branched. One opening of the vent pipe is arranged in the same way as the next-stage storage container. A plurality of stages the liquid accumulating device to.

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