JPH0610771Y2 - Water exchange device for aquarium - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a water exchange device used for exchanging water in a small aquarium for ornamental fish such as goldfish and tropical fish, and more particularly to a water exchange device. The present invention relates to a water exchange device suitable for supplying water.

(Prior Art) In an aquarium for aquarium fish, it is necessary to regularly exchange water.

In such a case, most commonly, a method of pumping water from a water tank with a bucket or a dipper and then supplying new water is adopted. In addition, it is also practiced to use a siphon effect to drain water with a rubber hose or the like, and then supply tap water with a water pipe hose or the like. Further, in the case of a relatively large water tank, it is also practiced to supply and drain water using an electric pump.

(Problems to be solved by the invention) However, in the method of exchanging water with a bucket or the like, not only a great deal of labor is required for pumping and supplying water, but also the bucket or the like is struck into a tank to break the glass. It may happen. In addition, since the aquarium for ornamental fish is generally installed indoors, such a method also has a problem that the periphery of the aquarium is flooded.

On the other hand, when draining water using the siphon effect, generally, one end of the rubber hose is put in a water tank, and the other end is sucked by the mouth to fill the rubber hose with water. Dirty water may enter your mouth,
Not good for hygiene. Therefore, as disclosed in Japanese Utility Model Laid-Open No. 57-74138, a water supply hose is connected to the middle part of a siphon hose that connects the inside and the outside of a water tank, and the siphon hose is filled with water from the water supply hose. Although such a structure has been proposed, such a structure has a problem in that if the operation procedure of the opening / closing valve is incorrect, water may flow backward, which makes the operation complicated.

Further, in the case of using an electric pump, not only is the apparatus expensive, but there is the problem that electric energy is required.

In addition, in any of these methods, the procedure is to discharge the water in the water tank once and then supply new water. Therefore, the fish in the aquarium will be swept by the water flow during drainage and water supply. Further, the water flow may disturb water plants in the aquarium. Furthermore, in the case of ornamental fish, if the water in the aquarium is changed all at once, the fish will be weakened due to the chlorine content in the tap water, so it is necessary to replace the fish little by little. It takes a lot of effort to try.

The present invention has been made in view of the above problems, and a first object thereof is to use a water supply pressure to supply water into the water tank while draining the water from the water tank. To get a switching device.

Another object of the present invention is to provide a water exchange device capable of keeping the water level in the water tank constant at an appropriate level during water exchange.

(Means for Solving the Problem) In order to achieve this object, in the present invention, a jet nozzle for ejecting a part of the water and the rest of the water are provided on a water supply side block to which water is supplied from a water supply hose. By attaching a water supply pipe leading into the water tank and connecting the drainage side block to the water supply side block, a suction space that communicates with the drainage port to which the drainage hose is connected is formed around the jet nozzle. There is. The suction space is adapted to communicate with the inside of the water tank by a drainage pipe.

It is desirable that the drainage pipe extends upward, and that a lengthwise adjustable drainage level adjustment pipe is attached to the upper end thereof.

Further, it is desirable that the water supply pipe be equipped with a water supply amount control valve capable of adjusting the amount of water flowing through the water supply pipe.

(Operation) With this configuration, when water is supplied from the water supply hose, a part of the water is jetted from the jet nozzle. Then, the jet space causes the suction space around the nozzle to have a low pressure, and the water in the water tank is sucked from the drain pipe and discharged from the drain hose. On the other hand, the rest of the water supplied from the water supply hose is supplied into the water tank through the water supply pipe. In this way, water supply and drainage are performed simultaneously.

If the drainage pipe is extended upward, drainage is stopped when the water level in the water tank reaches the upper end level. Therefore, if the drainage level adjusting pipe whose length can be adjusted is attached to the upper end of the drainage pipe, the water level in the water tank during water exchange can be adjusted.

Also, if you install a water supply adjustment valve on the water supply pipe,
The ratio of the amount of water ejected from the jet nozzle and the amount of water supplied from the water supply pipe into the water tank can be adjusted. When the amount of water jetted from the jet nozzle increases, the flow velocity increases and the amount of drainage also increases. Therefore, by adjusting the water supply amount adjusting valve, the ratio between the water supply amount and the drainage amount can be optimally adjusted, and water can be exchanged in a good state.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of a water exchange device according to the present invention. FIG. 1 is a vertical sectional side view of the water exchange device.
The figure is a schematic side view showing a state when the water in the water tank is exchanged by the water exchange device.

As is clear from FIG. 1, this water exchange device 1 is made of resin or the like and has a bottomed cylindrical water supply side block 2 and a cylindrical shape having a through hole 3a made of resin or the like in the center. A drain side block 3 is provided. The water supply side block 2 and the drainage side block 3 are watertightly connected by a screw portion 4.

A hose nipple 5 is press-fitted into the open end surface of the water supply side block 2, and a water supply hose 6 is connected to the hose nipple 5. Therefore, the water inlet 7 of the water supply side block 2 is formed by the opening of the hose nipple 5.

A small-diameter opening 2a is formed at the center of the bottom wall forming the other end surface of the water supply side block 2, and a thin tubular jet nozzle 8 is fitted into the opening 2a and is watertightly fixed. Also, an opening 2b is formed on the upper surface side of the block 2,
A water supply pipe 10 is provided in the opening 2b through a water supply control valve 9.
Are connected. A slit 11 is provided at the upper end of the water supply pipe 10.
Is formed, and the water splash prevention cover 12 is attached to the upper end thereof.

The central through hole 3a of the drain-side block 3 is larger in diameter and longer than the jet nozzle 8, and a conical throttle portion is formed in a portion corresponding to the tip of the nozzle 8. Then, the hose nipple 13 is press-fitted into the tip end side thereof, and the drain hose 14 is connected to the hose nipple 13. Therefore, when the drain side block 3 is attached to the water supply side block 2, a space 16 communicating with the drain port 15 of the drain side block 3 formed of the opening of the hose nipple 13 is formed around the jet nozzle 8. ing.

An opening 3b reaching the central through hole 3a is formed on the upper surface of the drain side block 3, and a drain pipe 17 is fitted and fixed to the opening 3b. The drainage pipe 17 extends upward, and a drainage level adjusting pipe 18 is slidably fitted to the upper end of the drainage pipe 17. The adjusting pipe 18 is fixed to the drain pipe 17 at an arbitrary height position by the screw 19. Therefore, the adjusting tube 1
The length 8 is adjustable, and the inside and the outside of the drain side block 3 are communicated with each other via the adjusting pipe 18 and the drain pipe 17.

Next, the operation of the water exchange device 1 thus configured will be described.

As shown in FIG. 2, the water exchange device 1 is installed on the bottom surface of the water tank 20. The water supply hose 6 is connected to the tap 21 of the water supply, and the drain hose 14 is connected to the water tank 20.
And is guided to the inside of a water receiver (not shown) such as a bucket.

It is now assumed that the water tank 20 contains water up to the level L ₁ shown by the solid line in FIG. Therefore, the upper end of the drainage level adjusting pipe 18 is located below the water surface.

In this state, the tap 21 of the water supply is twisted to supply the tap water to the water exchange device 1 via the water supply hose 6. Then, the water flows into the water supply side block 2 through the water inlet 7. Then, the water is divided in the direction of the jet nozzle 8 and the water supply pipe 10.

In this case, the water supply pressure is applied to the water supply side block 2. Further, the water supply pipe 10 side is throttled to some extent by a water supply amount adjusting valve 9. The jet nozzle 8 has a small diameter. Therefore, the water flowing toward the jet nozzle 8 is jetted as a high-speed jet from its tip. When water is ejected from the nozzle 8 in this way, the pressure in the space 16 around the nozzle 8 becomes lower than the external water pressure. As a result, the water in the water tank 20 becomes
Then, the water is sucked into the space 16 through the drainage pipe 17, and is discharged from the drainage port 15 to the outside of the water tank 20 through the drainage hose 14 together with the water ejected from the ejection nozzle 8.

During this time, even if the amount of water jetted from the jet nozzle 8 is small, a large amount of water can be sucked in from the outside if the flow velocity is high. Therefore, high drainage efficiency can be obtained by using the nozzle 8 having a small diameter.

On the other hand, the water flown from the water supply side block 2 to the water supply pipe 10 side has a water splash prevention cover 12 attached to the upper end thereof.
And is ejected from the slit 11 on the lower surface side and is supplied into the water tank 20.

In this way, the drainage from the water tank 20 and the water supply to the water tank 20 are simultaneously performed.

In that case, the ratio between the drainage amount and the water supply amount can be adjusted by adjusting the opening degree of the water supply amount adjustment valve 9. That is, when the valve 9 is throttled, the amount of water flowing through the water supply pipe 10 decreases, and the amount of water supply into the water tank 20 decreases.
On the other hand, since the pressure in the water supply side block 2 is increased by throttling the valve 9, the flow velocity of the jet flow ejected from the jet nozzle 8 is increased, and the amount of water sucked from the water tank 20 is increased.

Therefore, if the valve 9 is throttled below a predetermined opening,
The amount of drainage becomes larger than the amount of water supply, and the water level in the water tank 20 decreases. Then, the water level is level L ₂ shown in phantom in FIG. ₂ , that is, the drainage level adjusting pipe 1
When reaching the upper end level of 8, the water in the water tank 20 is not sucked into the suction space 16 of the water exchange device 1, but only the air is sucked. Therefore, after that,
Water corresponding to the amount of water supplied from the water supply pipe 10 will be discharged, and as a result, water exchange will be performed under the condition that the water level in the water tank 20 is kept constant at the level L _2. become. The level L ₂ can be adjusted by moving the drainage level adjusting pipe 18 up and down with respect to the drainage pipe 17 and adjusting the height position of the upper end thereof.

As described above, according to the water exchange device 1, since the water in the water tank 20 is automatically drained by using the feed water pressure, it is not necessary to use a special power source such as a power source,
It can be cheap. Further, if the water supply amount adjusting valve 9 and the drainage level adjusting pipe 18 are adjusted in advance, it is only necessary to twist the tap 21 of the water supply, and the operation thereof is extremely simple. Further, since the water supply and the drainage are performed at the same time, the temperature or the water quality of the water in the water tank 20 does not suddenly change, and the fish etc. are not adversely affected. Furthermore, since the water level in the aquarium 20 is kept constant during water exchange, the habitability of fish is not impaired, and disturbances in aquatic plants and the like do not occur.

Further, as shown in the figure, if the upper end of the water supply pipe 10 is located above the water surface in the water tank 20, the ambient air is entrained in the water ejected from the slit 11 at the upper end, so that the oxygen Water will be supplied in abundance.

Although water is supplied to the water exchange device 1 from the faucet 21 in the above embodiment, the water may be supplied with a certain water pressure, for example, installed at a position higher than the water tank 20. Alternatively, the water may be supplied from a stored water tank.

Further, in the above-mentioned embodiment, the drain pipe 17 is extended upward, but it may be extended downward. By doing so, it becomes difficult to maintain the water level in the water tank 20 at a constant level, but it becomes possible to discharge the dirty water existing at the bottom of the water tank 20.

(Effect of the Invention) As is clear from the above description, according to the present invention, by ejecting a part of the supply water from the jet nozzle, the water in the water tank is sucked around the nozzle and discharged. So, without requiring special power,
Moreover, it becomes possible to exchange water with an extremely simple operation. Therefore, the water exchange device can be inexpensive and easy to handle. Further, since water supply and drainage are performed at the same time, water temperature and water quality in the water tank do not suddenly change due to water exchange, and it is possible to prevent adverse effects on fish and the like in the water tank.

If the drain pipe that sucks in the water in the aquarium extends upward and a drainage level adjustment pipe with an adjustable length is attached to the upper end of the drain pipe, the drainage amount is set to be larger than the water supply amount. By doing so, it becomes possible to maintain the water level in the aquarium at an appropriate constant level during water exchange, so that the habitability of fish, etc. is not impaired and the aquatic plants are not disturbed. While you will be able to exchange water.

Also, if a water supply volume control valve is attached to the water supply pipe that supplies water to the water tank, the ratio between the water supply volume and the drainage volume can be adjusted by operating the valve, so the water temperature and water quality will not be affected. When there is no big difference, rapid water exchange is possible, and when supplying water with a large amount of chlorine, such as tap water, it is possible to perform water exchange over a long period of time.

[Brief description of drawings]

FIG. 1 is a vertical side view showing an embodiment of a water exchange device according to the present invention, and FIG. 2 is a schematic side view showing a state when water in a water tank is exchanged by the water exchange device. DESCRIPTION OF SYMBOLS 1 ... Water exchange device 2 ... Water supply side block 3 ... Drainage side block 6 ... Water supply hose 7 ... Water inlet, 8 ... Jet nozzle 9 ... Water supply adjustment valve 10 ... Water supply pipe, 14 ... Drainage hose 15 ... Drainage port, 16 ... Suction space 17 ... Drainage pipe 18 ... Drainage level control pipe, 20 ... Water tank

Claims (3)

[Scope of utility model registration request] 1. A water supply side block having a water inlet for supplying water from a water supply hose and comprising a jet nozzle for ejecting a part of the water and a water supply pipe for guiding the rest of the water into a water tank. A drain side block that is attached to the water supply side block and forms a suction space around the jet nozzle that communicates with a drain port to which a drain hose is connected; and a drain side block that is attached to the drain side block and has one end of the suction space. A water exchange device in a water tank, comprising: a drainage pipe having an opening at the other end and having the other end opening into the water tank. 2. The water exchange device for a water tank according to claim 1, wherein the drain pipe extends upward, and a drain level adjusting pipe whose length is adjustable is attached to an upper end of the drain pipe. 3. The water exchange device for a water tank according to claim 1, wherein a water supply amount adjusting valve is attached to the water supply pipe.