JP3113571B2 - Liquid mixing tap - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid mixing tap for connecting a main liquid with another liquid (sub-liquid) by connecting to a faucet of a main liquid supply pipe such as a tap.

[0002]

2. Description of the Related Art Conventionally, as described in Japanese Utility Model Application Laid-Open No. 56-126227,
A base end portion 1 provided with a connection portion 2 to be connected to a main liquid supply pipe such as a water pipe, a tip end portion 3 provided with a connection port connected to a hose 24 (see FIG. 6) and the like; There is known a liquid mixing tap provided with a liquid passage A that internally connects the base end portion 1 and the distal end portion 3 and a branch pipe 13 branched from the liquid passage A (see FIG. 5).

[0003] In use of this liquid material mixing tap, as shown in Fig. 6, the connecting portion 2 of the base end portion 1 is connected to the faucet 20 of the main liquid supply pipe, and the connecting port of the distal end portion 3 is connected to a hose. 24 and the branch pipe 13 is connected to the auxiliary liquid tank 21.
With a hose 22 or the like. When the faucet 20 is opened in this state, the main liquid flows out of the faucet 20 to the hose 24 on the connection port side of the distal end portion 3, and the negative pressure generated there causes the main fluid to flow from the branch pipe 13 to the hose 22.
The auxiliary liquid is sucked through the main liquid, and as a result, the auxiliary liquid is mixed (mixed) into the main liquid.

However, in the case of the above-mentioned liquid mixing tap, even when the faucet 20 of the main liquid supply pipe is closed, the tip of the hose 24 on the connection port side of the tip 3 is higher than the liquid level of the tank 21 containing the auxiliary liquid. If the water level is low, the secondary liquid will continue to flow out due to the siphon action.

That is, a water stopcock (not shown) for stopping the auxiliary liquid must be provided in the branch pipe 13 or in the hose 22 connecting the auxiliary liquid tank 21 and the branch pipe 13. For example, there is a disadvantage that the auxiliary liquid cannot be stopped.

[0006] Further, in the case where the water stopcock is provided in this way, every time the auxiliary liquid is supplied or stopped, the water stopcock must be opened or closed, and the mixed liquid must be opened or closed. Every time the supply and the stop are performed, there is a disadvantage that a very complicated operation of the faucet and the stopcock is required.

In addition, after closing the faucet 20 of the main liquid supply pipe, the undiluted undiluted liquid flows out from the end of the hose 24, which may have an undesirable effect depending on the type of the undiluted liquid. Become.

SUMMARY OF THE INVENTION The present invention has been made in view of the above situation, and has a structure in which a sub-liquid supply / stop operation can be performed only by opening and closing a faucet of a main liquid supply pipe. The purpose is to provide.

[0009]

In order to solve the above-mentioned problems, a liquid mixing tap according to the first aspect of the present invention has a connecting portion to be connected to a main liquid supply pipe. A base end portion, a tip end portion provided with a connection port to be connected to an extended supply pipe such as a hose, a liquid passage which is partitioned around and communicates inside the base end portion and the tip end portion, A liquid mixing tap provided with a branch pipe branched from a liquid passage, the liquid passage having a bottom surface capable of blocking an opening of a siphon cut passage in the liquid passage.
And, a valve body clearance for passing liquid is formed on the periphery, siphon
A cut passage is formed inside and a peripheral portion
A valve receiving member formed with a cutout portion serving as a passage for liquid
Has, the siphon cut passages, upper end of the valve body
It has an opening that contacts the bottom surface and the lower end is open.
Opening on the peripheral surface of the valve receiving member that is in close contact with the wall of the liquid path
And which, together with the proximal end of the branch pipe is provided below the valve body, the peripheral wall of the liquid passing path, communicating the lower end and the atmosphere side of the siphon cut passage which is open to the peripheral surface of the valve receiving member A through hole is formed.

[0010] When the liquid material mixing tap constructed as described above is used, the connecting portion at the base end is connected to the faucet of the main liquid supply pipe, and the connecting port at the distal end is extended by a hose or the like. When connected to a pipe, the branch pipe is connected to a container for the auxiliary liquid with a hose or the like, and when the faucet is opened, the main liquid flows out of the faucet to the hose on the connection port side, and the hose from the branch pipe via the hose The auxiliary liquid is sucked, and as a result, the auxiliary liquid is mixed (mixed) into the main liquid. On the other hand, when the faucet is closed, the liquid in the liquid flow path flows downward due to its gravity, and as a result, the valve body is pushed upward, and the air flows into the liquid flow path through the opening from the siphon cut path. Inflow. As a result,
The siphon effect which has occurred in the branch pipe and the liquid passing portion at the tip thereof, which has conventionally occurred, is prevented, and the outflow of the auxiliary liquid is stopped by closing the faucet.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As one embodiment of the liquid material mixing tap according to the first aspect, a base end portion provided with a connection portion to be connected to a main liquid supply line, and an extended supply tube such as a hose. A liquid material having a distal end portion provided with a connection port to be connected to the fluid passage, a liquid passage having a peripheral wall partitioned between the base end portion and the distal end portion, and a branch pipe branched from the liquid passage. A mixing stopper, wherein a circle capable of blocking an opening of a siphon cut passage in the liquid passage.
A valve body having a conical bottom surface and a gap for liquid passage formed on the periphery, and a siphon cut passage formed inside
And a notch portion is formed in the peripheral portion as a passage for liquid passage.
Has a valve receiving the member, the siphon cut path,
A circular opening at the upper end that contacts the conical part on the bottom of the valve
It has an opening and the lower end is densely attached to the wall of the liquid passage.
Contact is opened to the circumferential surface of the valve receiving member, together with the proximal end of the branch pipe is provided below the valve receiving member, the peripheral wall of the liquid passing path, opening to the circumferential surface of the valve receiving member Can be adopted such that a through hole communicating the lower end of the siphon cut passage and the atmosphere side is formed. In this way, the bottom surface of the valve body is conical, and the opening of the valve receiving member is circular. With the opening, the sealing performance between the valve body and the valve receiving member is improved, and the above-described advantageous effects can be obtained smoothly.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a liquid mixing tap according to an embodiment of the present invention.

FIG. 1 is a longitudinal sectional view showing the structure of a liquid mixture tap according to the present invention, FIG. 2 is a sectional view taken along the line II of FIG. 1 showing the positional relationship between a valve body and a peripheral wall of a liquid passage. FIG. 3 shows a valve receiving member and a siphon cut passage formed therein, taken along the line II-I of FIG.
FIG. 4 is a cross-sectional view taken along the line III-III of FIG. 1 showing a liquid passage below the valve receiving member.

In these figures, reference numeral 1 denotes a base end of a liquid substance mixing plug main body, 2 denotes a connection part to be connected to a faucet at an end of a main liquid supply pipe provided at the base end 1 and 3 denotes a liquid substance. 4 is a connection port to be connected to an extended supply pipe such as a hose provided at the tip 3, 5 is a rubber valve, 6 is a resin valve receiving member, and 7 is rubber It is a packing for sealing made of.

As shown in FIG. 1, a female screw 2a constituting a part of the connecting portion 2 is screwed on the inner peripheral wall of the proximal end 1 of the liquid mixture stopper, and is provided below the female screw 2a. Is formed with a step 2b for supporting the packing 7 from below at a distance corresponding to the thickness of the packing 7. This step 2
b is formed by making the cross section of the liquid passage A that connects the base end portion 1 and the front end portion 3 therein smaller at the lower portion than at the upper portion. Then, below the smaller diameter portion 8 of the liquid passage A, the smaller diameter portion 9 becomes smaller.
Is formed, and at the lower end of the small-diameter portion 9, an enlarged-diameter portion 10 that expands like a trumpet is formed. Therefore, the liquid passage A
Has a configuration in which the cross-sectional area changes from the base end 1 to the tip 3.

The valve receiving member 6 is arranged in the small diameter portion 8, and the valve receiving member 6 is provided in the small diameter portion 8 shown in FIGS.
The support legs 6a which are bifurcated at the lower end shown in FIG.
Step 11 formed at the boundary between small diameter portion 8 and small diameter portion 9
It is supported by. As shown in FIG. 3, a notch 6d (which forms a part of the liquid passage A) having a cross-sectional shape is provided above the support leg 6a of the valve receiving member 6, as shown in FIG. A circular opening 6b is formed at the center of the upper end. As shown in FIG. 1, the opening edge of the circular opening 6b protrudes obliquely from the periphery thereof, and the cross section of the opening edge has a thin ring shape. Below this circular opening 6b, it bends into an L-shape to form a lower end (tip).
Forms an opening 6c on the wall surface of the liquid passage A, that is, on the peripheral surface where it contacts the inner peripheral surface of the liquid substance mixing plug main body, and forms a siphon cut passage S from the circular opening 6b to the opening 6c. .

On the wall surface of the liquid passage A, a through hole 12 is formed on the inner peripheral side, which communicates with the opening 6c, which is the lower end of the siphon cut passage S, and whose outer peripheral side is open to the atmosphere.

Above the valve receiving member 6, a valve element 5 having a conical shape with a gently inclined bottom surface and having four projections 5a on its outer periphery is arranged. The bottom surface of the valve body 5 is in line contact with the circular opening 6b of the valve receiving member 6, and the projection 5a is located between the bottom surface of the valve body 5 and the inner peripheral wall surface of the liquid mixing tap main body.
As a result, a gap P is formed, and the gap P forms a part of the liquid passage A.

As shown in FIG. 1, below the valve receiving member 6, that is, at the upper end of the small-diameter portion 9, a branch pipe 13 whose tip is lowered is formed to be inclined. The proximal end of the branch pipe 13 communicates with the liquid passage A, and the distal end is open to the outside of the liquid mixing tap main body.

The packing 7 is elastically deformed when the liquid mixing tap is screwed into the faucet 20, so that the main liquid is connected at the connection between the liquid mixing tap and the tap 20 (see FIG. 6). Is arranged in the connection part 2 so as to prevent leakage of the gas.

Thus, the liquid material mixing tap constructed as described above is used as follows. That is, as shown in FIG. 6, a main liquid supply pipe, for example, a faucet 20 of a water pipe, an external thread of the faucet 20 and an internal thread 2a of the connection part 2 of the liquid mixture tap shown in FIG. By screwing, the connection part 2 of the liquid mixture tap is connected to a water pipe (main liquid supply pipe).

Next, a tip 22a of a pipe 22 whose base end is immersed in a tank 21 containing an auxiliary liquid, for example, a plant nutrient, is connected to the branch pipe 13.

When the faucet 20 (see FIG. 6) of the water pipe is opened in this state, the tap water (main liquid) passes through the center of the packing 7 from the faucet 20, and the gap P around the valve body 5
(See FIG. 2), flows downward, and further passes through notches 6d (see FIG. 3) on both sides of the valve receiving member 6 and passes through the small diameter portion 8 and the small diameter portion 9 of the liquid mixing tap. Then, it flows toward the hose 24 (see FIG. 6) connected to the tip of the liquid mixing tap. At this time, a negative pressure is generated when the tap water passes through the small-diameter portion 9, and a subsidiary liquid (eg, a plant nutrient) is sucked into the small-diameter portion 9 from the branch pipe 13 connected to the tank 21 side.
It becomes a state where the auxiliary liquid is mixed in the tap water.

On the other hand, when the faucet 20 is closed, the tap water above the valve body 5 flows downward due to its own weight in the liquid mixture tap, and the pressure in the valve body 5 portion becomes negative. Therefore, the atmospheric pressure acts on the valve element 5 from the through hole 12 through the siphon cut passage S, and the valve element 5 is lifted upward.

As a result, the air on the atmospheric side enters the liquid passage A in the liquid mixing tap through the through hole 12 and the siphon cut passage S, and the small-diameter portion 9 of the liquid mixing tap is subjected to the atmospheric pressure. Works. For this reason, the siphon effect of sucking up the sub-liquid from the tank 21 is stopped, and the supply of the sub-liquid is stopped together with the cutoff of the tap water.

When the tap 20 of the water pipe is opened again,
Tap water from the faucet 20 presses the valve body 5 toward the valve receiving member 6, so that the siphon cut passage S is cut off from the liquid passage A side, and the tap water is supplied to the small diameter portion 9 of the liquid mixing tap. Since the water passes, the auxiliary liquid passes through the pipe 22 again and is sucked up from the tank 21.

As described above, according to the liquid mixing tap, by opening and closing the main liquid supply pipe such as a water pipe, it is possible to supply and stop the sub liquid as well as the main liquid.

[0028]

According to the liquid mixing tap of the present invention, the supply and the stop of the sub-liquid together with the main liquid can be operated by opening and closing the main liquid supply pipe.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a configuration of a liquid material mixing tap according to the present invention.

FIG. 2 is a diagram showing an arrangement relationship between a valve body and a peripheral wall of a liquid passage.
2 is a sectional view taken along the line II of FIG.

FIG. 3 is a cross-sectional view taken along the line II-II of FIG. 1, showing a valve receiving member and a siphon cut passage formed therein.

FIG. 4 shows a liquid passage below the valve receiving member, taken along the line III-II in FIG.
FIG.

FIG. 5 is a longitudinal sectional view showing a configuration of a conventional liquid mixture tap.

FIG. 6 is a view showing a usage mode of a liquid mixing tap.

[Explanation of symbols]

 A: Liquid passage 1 ... Base end of liquid mixing tap 2 ... Connection to be connected to faucet of main liquid supply pipe 3 ... Tip of liquid mixing tap 4 ... Connection to be connected to extended supply pipe Mouth 5 ... Valve body 6 ... Valve receiving member 6b ... Opening 6d ... Notch 13 ... Branch pipe P ... Gap S ... Siphon cut passage

Claims (2)

(57) [Claims] 1. A base end portion provided with a connection portion to be connected to a main liquid supply pipe line, a tip end portion provided with a connection port to be connected to an extended supply pipe such as a hose, and the periphery thereof is partitioned. A liquid mixing tap having a liquid passage that internally connects the base end and the distal end, and a branch pipe branched from the liquid passage, wherein an opening of a siphon cut passage is provided in the liquid passage. It has a bottom that can block the part,
A valve body having a liquid passage gap formed in the periphery and a siphon cut passage are formed therein, and
In addition, a valve having a cut-out portion formed as a passage for liquid passage in the peripheral portion
And a receiving member, wherein the siphon cut passage is connected to a bottom surface of the valve body at an upper end.
An opening for touching, and a lower end of the wall of the liquid passage
Face is open to the peripheral surface of the valve receiving member in contact with the tight, with the proximal end of the branch pipe is provided below the valve body, the peripheral wall of the liquid passing path, circumference of the valve receiving member A liquid mixture tap characterized in that a through hole is formed to communicate the lower end of the siphon cut passage opening to the surface with the atmosphere side. 2. A base end portion provided with a connection portion to be connected to the main liquid supply pipe line, a tip end portion provided with a connection port to be connected to an extended supply pipe such as a hose, and the periphery thereof is partitioned. A liquid mixing tap having a liquid passage that internally connects the base end and the distal end, and a branch pipe branched from the liquid passage, wherein an opening of a siphon cut passage is provided in the liquid passage. Conical bottom that can block the part
And a siphon cut passage formed inside the valve body having a liquid passage gap formed on the periphery thereof, and
In addition, a valve having a cut-out portion formed as a passage for liquid passage in the peripheral portion
A receiving member, and the siphon cut passage has a circle at the upper end on the bottom surface of the valve body.
It has a circular opening that contacts the conical portion, and
Around the valve receiving member whose lower end is in close contact with the wall of the liquid passage.
Surface is open to, together with the proximal end of the branch pipe below the valve receiving member is provided, the peripheral wall of the liquid passing path, and the lower end of the siphon cut passage which is open to the peripheral surface of the valve receiving member A liquid mixture tap having a through-hole communicating with the atmosphere.