JP2003172465A - Two-way check valve - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a two-way check valve which reliably leads water discharged from one pump to a pipe, while preventing any reverse flow to the other pump by interposing the two-way check valve between the pumps and the pipe, when water discharged from two pumps is led via the same pipe. <P>SOLUTION: In this two-way check valve, a valve element (41) to close one water inlet (44) by being pushed by the water pressure when the water discharged from a pump (3) flows into the other water inlet (44) is accommodated in a valve body (40) formed so that the two water inlets (44) and (44) and one water outlet (45) are communicated with each other, and the valve element (41) is formed of a synthetic resin spherical body. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a two-way check valve mainly used in a water circulation device for artificial ponds.

[0002]

2. Description of the Related Art In recent years, efforts have been made to construct a garden called "bio garden" on the premises of a house, which is based on the image of the nature of a satoyama.

In this type of bio-garden, an artificial pond in which spring water and running water are formed by a water circulation device is often provided as a drinking fountain for birds and a habitat for killifish, frogs and the like.

In such a water circulation device for an artificial pond, most of the water in the artificial pond sucked by a pump is circulated through a pipe. However, if the life of the pump is short, the pump must be frequently replaced. It is troublesome to maintain.

Therefore, the present applicant proposes to use two pumps in combination to reduce the frequency of use of each pump and consequently reduce the number of times of pump replacement.

[0006]

As described above, when two pumps are used in combination, a simple structure is adopted in which the water discharged from each pump is guided not by separate pipes but by the same pipe. However, the construction cost can be reduced, but in this case, it is necessary to take measures to ensure that the water discharged from one pump does not flow into the other pump and is reliably guided to the pipe.

Therefore, according to the present invention, when the water discharge from the two pumps is guided through the same pipe, the water discharge from one pump and the water discharge from the other pump are interposed by interposing the pump and the pipe. The purpose of the present invention is to provide a two-way check valve that can be reliably guided to piping while preventing it from flowing into the side, and that has a simple structure and high reliability.

[0008]

In order to solve the above-mentioned problems, the two-way check valve of the present invention has two water inlets and one water inlet.
The valve body that is formed so that the two water outlets communicate with each other is accommodated in the valve body that blocks the other water inlet by being pushed by the water pressure when the water discharged from the pump flows into the one water inlet. The valve body is made of a synthetic resin sphere.

Specifically, the valve element is formed by processing a floating ball for fishing. Further, the valve body, by connecting one end of the small-diameter straight pipe portion to the pipe wall of the large-diameter straight pipe portion so as to be orthogonal to this,
It is formed into a generally T-shape, and both ends of the large-diameter straight pipe part are water inlets, and the other ends of the small-diameter straight pipe parts are water outlets.
A valve body having a diameter larger than the inner diameter of the small diameter straight pipe portion is accommodated in the large diameter straight pipe portion.

Further, straight pipes for connecting pumps are detachably inserted into both water inlets of the valve body, and the valve bodies are seated at the insertion ends of these straight pipes to close the water inlets. .

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a water circulation device installed in an artificial pond (1) of a bio garden, and FIG. 2 shows a schematic configuration of the water circulation device.

This water circulation device includes a solar cell (2), a pair of DC pumps (3) and (3) which are operated by electric power obtained by solar power generation by the solar cell (2), and these DC pumps (3). ) (4) Controller that controls the operation of (3)
And a pipe (5) for guiding water discharged from the DC pumps (3) (3).

The artificial pond (1) is formed by laying sand, clay, stones, etc. on a molded panel or a waterproof sheet laid in a garden of a house to form a water storage portion and storing water in the water storage portion. It is configured.

The solar cell (2) is a plurality of solar cell panels.
(6) (6) ... is a rectangular frame-shaped metal module frame
It is a commercial product surrounded by (7).

As the DC pumps (3), (3), for example, a commercially available bus pump used for pumping remaining hot water in a bathtub is used. In addition, when the bath pump is used by immersing it in the artificial pond (1), suspended matter and algae are likely to be clogged in the small suction port, which easily causes clogging. Therefore, a filter (10) (10) using a commercially available washing net is used. By covering the entire pump with a larger filtration area, clogging is less likely to occur.

The controller (4) is a pair of direct current pumps.
(3) The function of alternately activating (3) at regular intervals, and when the amount of power generated by the solar cell (1) decreases and the supplied power decreases, and the voltage value falls below the set value, the first DC pump ( 3) It has a function to operate only.

The pipe (5) guides the water discharged from the DC pumps (3) and (3) to the spring water portion (30) of the artificial pond (1). Between the pipe (5) and the direct current pumps (3) and (3), when one of the direct current pumps (3) is operating, the discharged water is on the side of the other direct current pump (3). There is a two-way check valve (31) for preventing the liquid from flowing in.

As shown in FIGS. 3 to 5, the two-way check valve (31) includes a valve body (41) made of a synthetic resin sphere in a valve body (40) made of synthetic resin, for example. Be accommodated.

The valve body (40) is integrally connected to the center of the pipe wall of the large-diameter straight pipe portion (42) by integrally connecting one end of the small-diameter straight pipe portion (43) so as to be orthogonal to this. It is formed in a substantially T shape. And both ends of the large diameter straight pipe part (42) are water inlets (44) (44).
The other end of the small-diameter straight pipe part (43) serves as a water outlet (45), and the water inlets (44) (44) and the water outlet (45) communicate with each other.

One end of each of the straight pipes (46) (46) for connecting a pump is detachably inserted into the both water inflow ports (44) (44) of the valve body (40). ) (46) is connected to the water discharge ports (47) and (47) of the DC pumps (3) and (3), respectively. The water outlet (45) of the small-diameter straight pipe (43) should be
(5) is connected.

The valve body (41) is a small diameter straight pipe part (43) of the valve body (40).
Has a larger diameter than the inner diameter of and the inner diameter of the straight pipe (46) (46) for connecting the pump, and is movably accommodated in the large-diameter straight pipe portion (42) of the valve body (40). .

As the valve element (41), for example, a commercially available fishing float ball processed is used. Specifically, the stick part of the float is cut off with a nipper or the like. Floating balls do not corrode or rust, are close to a perfect sphere, and are lightweight and inexpensive.
By adopting, the function of the check valve (31) is improved and the manufacturing cost is reduced.

In the water circulation device having the above-mentioned structure, the electric power obtained by the solar power generation of the solar cell (2) is supplied to the DC pumps (3) and (3) through the controller (4), and the voltage value thereof is changed. If it is above the set value, DC pump (3)
(3) operates alternately at regular intervals.

The water in the artificial pond (1) is sucked into the pump from the suction port of the first DC pump (3), and the discharged water is the first water inlet of the two-way check valve (31). When it flows into the (44), as shown in FIG. 4, the valve body (41) pushed by the water pressure is inserted into the second water inlet (44) to the straight pipe (46).
By seating on the insertion end, that is, one end of the
Block the water inlet (44). As a result, the water discharged from the first DC pump (3) is reliably guided from the water outlet (45) to the pipe (5) without flowing into the second DC pump (3) side, and the spring water portion (30 ).

When the water discharged from the second DC pump (3) flows into the second water inlet (44), the valve body (41) pushed by the water pressure, as shown in FIG. The first water inlet (44) is closed by sitting on the insertion end of the straight pipe (46) inserted into the first water inlet (44). By this, the second
The water discharged from the DC pump (3) is the first DC pump (3)
It is reliably guided to the pipe (5) from the water outlet (45) without flowing into the side.

As described above, even if the DC pumps (3) and (3) are alternately operated, the discharged water can be reliably supplied without backflow to the pump side, and the water circulation in the artificial pond (1) Can be done stably.

When the weather becomes bad or the dusk reduces the amount of power generated by the solar cell (1) to reduce the supply power and the voltage value becomes less than the set value, the DC pump (3) (3)
Switch operation becomes unstable, so the controller
By the action of (4), only the first DC pump (3) continuously operates. Also at this time, by the action of the two-way check valve (31),
As described above, the spouting water from the first DC pump (3) is prevented from flowing into the second DC pump (3) side.

The present invention is not limited to the above embodiment, and it goes without saying that many modifications and changes can be made to the above embodiment within the scope of the present invention.

[0029]

As is apparent from the above description, if two pumps are connected to the two water inlets of the two-way check valve of the present invention and a pipe is connected to one water outlet, one pump will be operated. It is possible to reliably guide the spouted water to the piping without flowing into the other pump side.
Therefore, by applying this two-way check valve in a water circulation device that also uses two pumps, it is possible to circulate the water discharged from those pumps stably through the same pipe.

Further, since a spherical body made of synthetic resin which does not corrode or rust is used as the valve body of this two-way check valve, a stable check valve effect can be exhibited for a long period of time. In particular, if a fishing float that is light and inexpensive and has a shape close to a perfect sphere is used, the functionality can be improved and the manufacturing cost can be reduced.

Further, by accommodating the valve body having a diameter larger than the inner diameter of the small-diameter straight pipe portion in the large-diameter straight pipe portion of the valve body, the valve body can be installed in any orientation of the valve body. It is possible to improve reliability without causing a problem that the water flows out into the small diameter straight pipe portion and blocks the water outlet.

Furthermore, the simple structure is such that the straight pipes for pump connection are detachably inserted into the large-diameter straight pipe portions of the valve body, and the valve bodies are seated at the insertion ends of these straight pipes. Moreover, by removing the straight pipe, the inside of the valve can be easily inspected and repaired, and the maintainability is good.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state in which a water circulation device is installed in an artificial pond.

FIG. 2 is a schematic configuration diagram of the same.

FIG. 3 is a vertical sectional view of a two-way check valve.

FIG. 4 is a vertical cross-sectional view of the two-way check valve showing a state when water discharged from the first pump flows in.

FIG. 5 is a vertical cross-sectional view of the two-way check valve showing a state in which water discharged from the second pump flows in.

[Explanation of symbols]

(3) Pump (31) 2-way check valve (40) Valve body (41) Disc (42) Large diameter straight pipe section (43) Small diameter straight pipe section (44) Water inlet (45) Water outlet (46) Straight pipe

Claims (4)

[Claims] 1. When water discharged from a pump flows into one of the water inlets in a valve body formed so that the two water inlets and the one water outlet communicate with each other, the water is pushed by the water pressure. The two-way check valve is characterized in that the valve body for closing the other water inlet is housed, and the valve body is made of a synthetic resin sphere. 2. The two-way check valve according to claim 1, wherein the valve body is formed by processing a floating ball for fishing. 3. The valve body is formed in a substantially T-shape as a whole by connecting one end of the small diameter straight pipe portion to the pipe wall of the large diameter straight pipe portion so as to be orthogonal to the pipe wall. Both ends of the pipe portion are water inlets, the other end of the small diameter straight pipe portion is a water outlet, and a valve body having a diameter larger than the inner diameter of the small diameter straight pipe portion is accommodated in the large diameter straight pipe portion. The two-way check valve according to claim 1 or 2. 4. Straight pipes for connecting pumps are detachably inserted into both water inlets of the valve body, and the valve bodies are seated at the insertion ends of these straight pipes to close the water inlets. The two-way check valve according to claim 3.