JPH11267556A - Water spray plug for dilution chemical liquid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily obtain a required dilution rate of a chemical liquid even by an ordinary person and to conveniently obtain a required amt. of water for diluting chemical liquid. SOLUTION: A flow pass narrow part 12 provided for obtaining a jet water flow for suction of chemical liquid is formed at the uppermost side of this plug main body. On the other hand, the chemical liquid is fed to the flow pass narrow part 12 from this chemical liquid bottle 10 both by natural flow down utilized by gravity to this flow path narrow part 12 from the top and by forcible suction caused by jet water flow.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a watering faucet for diluting horticultural chemicals, one end of which is connected to a water tap or the like and used by being connected to a water supply hose.

[0002]

2. Description of the Related Art Spraying a chemical is indispensable for preventing or eliminating pests during plant cultivation. Generally, a commercially available drug solution is diluted as necessary at the order of 500 times, 1000 times, or 2000 times, and the diluted drug solution is atomized and sprayed on cultivated plants. In addition, liquid fertilizers, nutrients, and the like are diluted and sprayed with these chemicals in the same order. In the present invention, the above-mentioned chemicals, liquid fertilizers, nutrients and the like are hereinafter collectively referred to as chemicals.

As a means for diluting and spraying these chemicals, a bottle cap containing the chemicals is usually used as a measuring box. Then, the chemical solution poured into the cap is mixed and diluted with a predetermined amount of water. Next, the dilution water of the chemical solution is transferred to the tank of the sprayer. Further, as another means, there is a work mode in which a predetermined amount of water is poured into a tank of a sprayer, and a chemical solution poured into a cap is mixed and diluted therewith.

[0004]

However, such a spraying form of dilution with a chemical solution involves the following inconveniences. The operation of diluting a chemical solution to a desired ratio is very troublesome.
The spray amount of the drug solution is not constant from day to day, and the dilution ratio varies depending on the type of the drug solution. Therefore, it is very difficult for ordinary people to always obtain a desired preferable dilution rate. However, it is very difficult to obtain as much dilution water of the chemical solution as necessary for spraying, because the chemical solution is mixed with a fixed amount of dilution water. Since the diluent is inevitably excessive, the waste of the chemical solution is increased. The nebulizer itself is heavy, and it also needs to carry a tank containing the dilution water of the drug solution.
The work done on the shoulder is extremely hard work. In addition to the expensive nebulizer, a special dilution container is required for diluting the drug solution. Weighing and dilution of chemicals, cleaning of tanks before dilution,
It takes time and effort to prepare for work such as cleaning the measuring cap. In order to prevent mixing of different types of chemicals, it is necessary to clean the tank of the nebulizer each time.

The main object of the present invention is to make it possible to obtain a desired dilution rate of a drug solution easily and accurately even by ordinary people, and to easily obtain a required amount of drug dilution water. Make it an issue. It is another object of the present invention to provide an easy and easy preparation for spraying a chemical solution and to provide a simple structure at a low cost.

[0006]

A channel narrowing portion provided for obtaining a jet water flow for sucking a chemical solution is formed at the uppermost portion of the stopper body, while the drug solution bottle is formed on the upper peripheral wall of the stopper body. And a chemical solution can be supplied to the narrowed portion of the flow channel from above by gravity using gravity.

As described above, by disposing the liquid medicine bottle on the upper side of the stopper main body with the mouth part down, the liquid medicine inside the bottle naturally flows down to the flow path constricted part by gravity. At the same time, the water is positively sucked by the jet water flow generated by the flow path constriction. Therefore, basic dilution water can be obtained accurately and easily. And
By mixing the basic dilution water with one of a plurality of water passages provided in the stopper body or tap water flowing down from the plurality, even a general person can obtain a desired dilution rate of the chemical solution. It is simple and accurate. That is, the dilution ratio of the chemical solution can be easily and freely changed. In addition, the required amount of the chemical dilution water can be easily obtained.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS At one end, a connection portion of a water supply hose is provided.
In addition, a plurality of water passages opened and closed by an on-off valve, tap water can always flow down to a stopper body provided with a connection portion of a watering tool having a watering nozzle at the other end, and The open flow paths are located independently of each other.The open flow paths have a small diameter flow path at the upper level dedicated to sucking the chemical solution and a large flow path at the lower level dedicated to tap water flow. The small-diameter flow path is formed with a flow velocity increasing flow path in which the flow path diameter is partially narrowed, and a liquid medicine bottle provided on the upper peripheral wall of the stopper main body is mounted. The means and the flow velocity increasing flow path are connected to each other via a chemical liquid suction flow path through which the chemical liquid in the chemical liquid bottle is sucked, and the chemical liquid is supplied by the jet water flow of the tap water flowing down the flow velocity increasing flow path. The chemical is sucked from the suction channel and mixed with tap water. Further, all the flow paths including the open flow path are formed so as to be joined at the tip thereof and flow down to the water spray nozzle, and a combination of one or more of the water flow paths and the open flow path Is configured to change the dilution rate of the chemical solution.

According to this means, by disposing the liquid medicine bottle on the upper side of the stopper body with the mouth portion facing downward, the liquid medicine inside is naturally moved by gravity to the flow path constriction located at the uppermost position of the stopper body. Flowed down. At the same time, the water is actively sucked by the jet water flow generated by the narrowed portion of the flow path. Therefore, the inconvenience that the chemical solution cannot be suctioned from the bottle easily due to a change in the pressure of the tap water hardly occurs. Further, the dilution ratio of the basic dilution water can be easily and accurately maintained irrespective of the presence or absence of a change in tap water pressure.

Then, by mixing the basic dilution water with tap water flowing down from one or more of a plurality of water passages provided in the stopper body, the dilution ratio of the chemical solution can be increased.
It can be easily and accurately changed to large and small.

At this time, using only the open flow path,
By closing all the other water passages, a diluent having the highest concentration can be obtained.

As described above, the water tap according to the present invention is provided with a plurality of openable and closable water flow paths in addition to the open flow path. Therefore, if one or more of the water flow passages are appropriately opened and the tap water is allowed to flow down, the diluent and the tap water in the open flow passage, which is always in a water flow state, are connected to the sprinkler tap. In the mixing section, the desired mixing ratio is well mixed. As a result, the dilution ratio increases as desired.

Therefore, if all of the water flow passages are set to have the same flow passage diameter as the open flow passage,
For example, if the dilution ratio of the open channel is 500 times,
By opening one water passage, the dilution ratio is increased 1000 times. In addition, the dilution rate can be sequentially increased to 1500 times if there are two water passages, and to 2000 times if there are three water passages.

Therefore, the present invention has the following effects. The drug solution inside the drug solution bottle can naturally flow down into the flow path constriction due to gravity, and can also be positively sucked by the jet water flow generated by this flow path constriction, accurately and easily. Now that dilution water can be obtained, with a simple operation of flowing down tap water, even ordinary people can easily set the desired dilution rate of the drug solution, and
Can be obtained accurately. That is, the dilution ratio of the chemical solution can be easily and freely changed. In addition, the required amount of the chemical dilution water can be easily obtained.

Since the open flow path is provided with a small-diameter flow path dedicated to sucking the chemical, disturbance conditions can be reduced as much as possible, and the suction action of the chemical can be performed more accurately. It is easy to keep the basic dilution rate ideal.

By simply attaching a chemical bottle to the water tap, the chemical dilution water can be sprinkled on the cultivated plant by running water such as tap water. Therefore, an expensive nebulizer or a container dedicated to diluting a chemical solution is not required. Further, a desired dilution ratio can be easily and easily obtained by a simple structure for simply opening and closing the water flow passage and a simple operation. As a result, it became possible to easily spray the necessary amount of the chemical dilution water with ease and without any trouble.

If the chemical bottle is removed and water is sprinkled, the tap water flowing down the open flow path causes the chemical remaining in the chemical suction flow path to flow down together. Therefore, there is no possibility that the chemicals in different chemical bottles are mixed when the different chemicals are sprayed.

Further, by removing the chemical bottle and closing the chemical suction passage, only tap water can be sprinkled. For this reason, it is possible to arbitrarily switch between spraying the diluted liquid of the chemical solution and spraying only the tap water.

Since the flow path constricted portion has a configuration in which the flow path diameter is partially constricted, the structure is simple and the production is simple.

The plug body is a straight tube,
The configuration in which the connection between the water supply hose and the watering device is performed via a connecting device that is screwed into screws formed at the front and rear ends of the straight pipe body is adopted. This is because it can be manufactured simply and at low cost, and especially when the synthetic resin is used as the material, the manufacture is simpler and cheaper. The reason why this configuration and the configuration having the flow path constricted portion are taken into account is that there is an advantage that the structure can be further simplified and the device can be manufactured at low cost.

Further, the stenotic flow path portion including the mounting means for the chemical liquid bottle is formed separately from the plug main body, and the stenotic flow path portion is formed with respect to the mounting recess formed in the plug main body. A configuration in which the liquid medicine is fixed in such a manner as to be connected to a dedicated small-diameter flow path for sucking the chemical solution can be adopted. By constructing a part having a complicated structure among the parts constituting the plug main body as a separate body, its production is much easier than in the case where the whole is configured as a single integrated unit from the beginning, This is because it can be performed at low cost.

This structure and the plug body are linear pipes, and the connection between the water supply hose and the sprinkler is screwed into screws formed at the front and rear ends of the linear pipe. The addition of the configuration performed through the fittings to be combined and the configuration having the flow path constriction portion are added to the fact that the plug body can be manufactured more simply and at a lower cost, and especially when the synthetic resin is used as the material. This is because its manufacture is much easier and cheaper.

A structure is adopted in which a water flow resistance member is provided inside a water flow path other than the open flow path. This is because, even when the tap water pressure changes every moment, the flow rate in each of the flow paths can be kept constant as much as possible, and the fluctuation of the dilution ratio can be reduced as much as possible.

In addition, since the tap water flowing down the water flow passage can be formed into a spiral flow (vortex flow) by the presence of the water flow resistance member, the tap water flowing into the mixing section can be made into a large turbulent flow. The stirring and mixing of the basic dilution water flowing down from the open flow path and the tap water flowing down the water flow path are performed very efficiently, and the desired dilution rate of the chemical solution is maintained at the desired value. This is because they can be sprayed continuously while keeping them.

[0025]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 4 show an embodiment of a water tap for diluting a chemical according to the present invention. In the figure, reference numeral 1 denotes a plug body provided with a water supply channel A. The plug body 1 is basically formed with the same diameter without constriction or overhang over its entire length. That is, it is formed in a straight tube 1A.
Also, external threads 2
Is provided.

Further, connection caps 3 as connection tools are respectively screwed into the male screws 2 provided on the outer peripheral surfaces at both front and rear ends of the straight tubular body 1A. Then, the water supply hose 4 and the connection hose 6 connected to the sprinkler 5 are connected via these connection caps 3. The other end of the water supply hose 4 is connected to a water tap (not shown).

Each of the two connection caps 3 has a large diameter on the side connected to the straight tubular body 1A. A female screw 7 is provided on the large-diameter inner surface. This female screw 7 is used for the straight pipe 1A.
, And is screwed to the male screw 2.
In addition, these two connection caps 3 are integrally provided with a small-diameter connection cylinder 8 on the other end side. The small-diameter connection tube 8 has an annular raised portion (rib) a for connecting the hose on the outer peripheral surface.

Therefore, the ends of the water supply hose 4 and the connection hose 6 are fitted into the connection tube 8. Although not shown, a tightening ring is fitted on the outside of the connecting portion as necessary to prevent the hose from being detached.

As described above, there are adopted three configurations of the linear tube 1A, the male screw 2 formed at both ends thereof, and the connection cap 3 connected to the male screw 2 by the female screw 7. As a result, the plug body 1 can be manufactured much more easily and at a lower cost. In particular, by employing a synthetic resin material, the production thereof is further simplified and the cost is reduced.

Reference numeral 9 denotes a female screw cylindrical portion serving as a mounting means for the bottle 10 containing the chemical solution. As shown in the drawing, the female screw cylinder 9 is formed on the upper peripheral wall of the plug main body 1 so as to open upward. Then, the chemical solution bottle 10 is provided so that the male screw mouth 10a is turned upside down and the liquid solution bottle 10 is screwed in and mounted. The female screw cylinder 9 is provided with a so-called breathing slit flow channel b that connects the internal space of the chemical liquid bottle 10 to the outside.

Reference numeral 11 denotes an open flow path formed in connection with the water supply flow path A, which is located inside the plug main body 1 and is set at the uppermost position thereof and has an axis parallel to the axis of the plug main body 1. Formed.

The open flow path 11 is provided in the upper small-diameter flow path 1.
1a and a lower large-diameter flow path 11b. A passage diameter G ₂ of the small diameter flow channel 11a, a large diameter flow channel 11b
The ratio of the passage diameter of the channel diameter G ₃ of the 1: 4 to 2: is set in a range of 3. Then, the small-diameter flow path 11 above this
In FIG. 3A, a flow path constriction portion 12 is formed on the inner wall, as shown in FIG. G _{1 in} FIG. 3 indicates the flow path diameter of the flow path constriction portion 12.

Therefore, when the tap water flows down the flow path constricted portion 12, the flow velocity becomes large (a jet water flow). The flow path narrowing portion 12 is formed by the small-diameter flow path 11.
A constriction is provided on the inner surface of the pipe in the middle of a. This constriction is performed by first lining the pipe inner surface in the middle of the small-diameter flow path 11a,
The tap water is sequentially swollen in the flowing direction. Thereafter again, obtained by forming so as to return to a predetermined channel diameter G ₂ of the small diameter flow channel 11a.

The flow path narrowing portion 12 is provided in the liquid medicine bottle 1.
0 is formed below the mounting means 9. Also,
A chemical solution discharge port 13 is opened in front of the maximum bulging portion 12a, that is, in the flow channel wall on the side of the lower side of the tap water flow. Then, the chemical solution discharge port 13 and the chemical solution bottle 1
0 is penetrated through the tube wall of the plug body 1,
They are directly connected to each other via the chemical solution suction channel 14.

Therefore, the tap water flows down at a high speed in the flow path narrowing portion 12, so that the pressure decreases. as a result,
The chemical liquid in the chemical liquid bottle 10 is efficiently sucked into the chemical liquid suction flow path 14 with the help of natural flow due to gravity. Then, a small amount of the chemical solution sucked into the chemical solution suction channel 14 is sucked through the chemical solution discharge port 13, and is finally stirred and diluted with tap water.

A straight tube 1A forming the plug body 1
In addition to the open flow path 11, three water flow paths 15 having the same diameter are formed at predetermined intervals around the axis of the plug body 1. A cock type on-off valve 16 is provided in the middle of each flow path. Each of these on-off valves 16 has a valve box 17 formed in the middle of each water passage 15, and the valve box 17 has a built-in rotary valve element 18 having a channel f. An operation lever 20 is connected to the rotary valve body 18 through a valve cover 19, so that the respective water passages 15 can be opened and closed independently.

The diameter g of each of the water passages 15 is
The small-diameter flow path 11a of the open flow path 11 and the large-diameter flow path 1
1b is formed to have a total flow path diameter G (G ₂ + G ₃ ). That is, the ratio between the diameter of each water passage 15 and the diameter of the open passage 11 is designed to be 1: 1.

Each of the water passages 11 has a passage diameter g.
The open channel 11 is formed to have the same size as the channel diameter G. That is, the flow rates of the open flow path 11 and each of the plurality of water flow paths 15 are substantially the same.

Therefore, for example, in a case where the chemical is designed to be diluted 500 times in the open flow path 11, the following diluting action can be obtained according to the structure shown in FIG. That is, when one of the water passages 15 is opened to allow the tap water to flow down, the chemical is diluted 1000 times. Similarly, two water passages 1
When releasing 5, the drug solution is diluted 1500 times.
Then, when all the water passages 15 are opened, the chemical is diluted 2000 times.

A mixing channel 21 is formed inside the connection cap 3 on the side to which the connection hose 6 is connected. The mixing flow path 21 has a volume sufficient to mix the water flowing down the open flow path 11 and the three water flow paths 15, and mixes the chemical and tap water flowing down these. I do. By this mixing, the desired 500 to 2
Allows for a 000-fold dilution. Further, the enlarged flow path 22 is also provided inside the connection cap 3 on the side where the water supply hose 4 is connected.
Are formed. The enlarged flow path 22 also has a volume sufficient for flowing water through the open flow path 11 and the three water flow paths 15.

The water sprinkler 5, which is attached in this order from the main body 1 side of the water pipe 23 to the water nozzle 24, is detachably connected to the tip of the main body 1. Then, the diluent flowing down from the stopper main body 1 is jetted at a high speed. The attachment of the sprinkler 5 to the stopper main body 1
Are connected by a screw via a coupling 25.

The small-diameter flow path 11 of the open flow path 11
The flow path constriction portion 12 formed at a and the female screw tube portion 9 provided integrally with the flow passage constriction portion are formed separately from the linear tube 1A.

The specific structure is as follows, and the range formed separately is as follows. First, as shown in FIG.
The range 1a is the range from the center of the flow path constricted portion 12 to the part reaching the maximum flow path diameter before and after that. Also, below,
As shown in FIG. 3, the open flow path 11 extends from a portion along a virtual horizontal line passing slightly above the uppermost end of the large-diameter flow path 11 b to an upper range. Then, as specifically shown in FIG. 4, this portion is formed separately from the linear tube 1 </ b> A (piece P) including the female screw tube portion 9.

In addition, a recess 26 is formed in the straight tubular body 1A in which the flow path constricted portion 12 and the piece P integrally formed including the female screw tube portion 9 are fitted. . The piece P is fitted into the recess 26 and the linear pipe 1A and the piece P are integrally joined by an appropriate means. As a joining means, for example, when a molded article of a synthetic resin is used, an adhesive is used, and when it is a metal, means such as welding is adopted.

As described above, by adopting a method of separately configuring a part having a complicated structure among the respective parts constituting the water faucet, the whole is configured as a single integrated body from the beginning. As compared with the case where it is performed, there is an advantage that its manufacture is remarkably easy and can be performed at low cost. In particular, by using a synthetic resin material, this purpose is more remarkably exhibited.

Next, the operation of the above embodiment will be described. A water supply hose 4 is connected to the rear end of the stopper main body 1, and a chemical solution bottle 10 is connected.
Is mounted on the bottle mounting means 9. Furthermore, in order to obtain a desired dilution rate, necessary operations such as selecting the required number of the plurality of water passages 15 and opening the corresponding on-off valve 16 are performed. Next, when water is allowed to flow, the tap water flows down the open flow path 11, the flow speed increases in the flow path narrowing portion 12, the pressure is reduced, and the tap water flows down to the mixing flow path 21.

When tap water flows down the flow path narrowing portion 12 at a high speed, the pressure in the flow area of the flow path narrowing portion 12 becomes low. As a result, the chemical solution in the bottle 10 is sucked into the chemical solution suction channel 14 by helping the natural flow.
Then, a small amount of the chemical solution is discharged through the chemical solution discharge port 13, and the small amount of the chemical solution flows down on tap water.

The chemical solution having passed through the small-diameter flow path 11a is stirred and diluted in the mixing flow path 21 into tap water flowing down the large-diameter flow path 11b. Thereby, the dilution is performed at a predetermined dilution rate, for example, 500 times.

When the water passage 15 is also open, tap water flows from the water supply passage A into the water passage 15 as well. As a result, the tap water is mixed with the dilution water flowing down from the open channel 11 in the mixing channel 21. By this mixing, the dilution ratio of the dilution water is further increased. In this manner, four levels of dilution ratios, 500 times, 1000 times, and 15 times, according to the number of open water passages 15
00 and 2000 times are easily obtained.

The dilution water of the chemical is guided from the mixing channel 21 to the water pipe 23 and finally spouted vigorously from the water spray nozzle 24 at the tip.

The change of the dilution rate is determined by the stopper body 1
This is achieved by a very light and simple operation of simply opening and closing the on-off valve 16 disposed on the peripheral wall to open and close the water passage 15. Therefore, it is possible to easily sprinkle the required amount of the chemical dilution water onto the cultivated plant without any trouble.

Further, by providing a dedicated channel for sucking the chemical solution, that is, a small-diameter channel 11a, the suction of the chemical solution can be performed more efficiently.

At the same time, the mounting means 9 for the chemical liquid bottle 10, that is, the female screw cylinder 9 is provided on the upper peripheral wall of the water tap 1, and the chemical liquid bottle 10 mounted here is
The male screw opening 10a is mounted in a downward position. Therefore, the chemical solution inside naturally flows down into the small-diameter flow channel 11a through the chemical solution suction flow channel 14 even by gravity, and the action of sucking the chemical solution by the flow path narrowing portion is more accurately and efficiently achieved. There are advantages.

Then, if the chemical bottle 10 is removed and water is sprinkled, the chemical remaining in the chemical suction passage 14 is washed away by tap water and eliminated. Therefore, when spraying different liquid medicines, the liquid medicine bottle 1 containing different liquid medicines
Even if it is changed to 0, there is no danger that these different chemicals are mixed carelessly.

The structure shown in FIGS. 5 and 6 is another embodiment developed for the purpose of mixing the dilution water and the tap water more efficiently. Hereinafter, the configuration will be specifically described. That is, the enlarged flow path 2 of the water flow path 15
In the range from the starting end on the second side to just before the on-off valve 16,
As shown in FIG. 5, a member 27 serving as a resistance to water flow is provided in the water flow path 15. The specific structure of the water flow resistance member 27 is, as shown in FIG.
7A.

The spiral body 27A is formed of a synthetic resin or metal wire that rotates in one direction with respect to the axis of the water flow passage 15. The outer diameter of the passage 15 is substantially equal to the diameter of the water passage 15. Also,
In the structure shown in FIG. 5, the starting end of the spiral 27A is
The locking groove 28 formed in the wall at the start end of the water passage 15.
, So that the illustrated insertion position is properly maintained.

Further, the water flow resistance member 27 is formed as shown in FIG.
(A) and (B) are substituted. The structure shown in FIGS. 6A and 6B is a spiral body 27A.
And a stop 27B. The spiral body 27A is formed of a synthetic resin or metal wire that rotates in one direction loosely with respect to the axis of the water passage 15.
Further, as an example of the engagement stopper 27B, a crescent-shaped flange body made of synthetic resin or metal as shown in the figure is employed. And this collar body,
The spiral body 27A is integrally provided at the start end on the enlarged flow path 22 side.

The outer diameter of the spiral body 27A is formed smaller than the water passage 15 and the water passage 1
5 so that it can be inserted and removed freely. In addition, the collar body as an example of the engaging stopper 27B has a diameter up to an outer peripheral edge,
The diameter of the water passage 15 is larger than that of the water passage 15.
This is because the spiral body 27A is brought into contact with the outer wall 15A around the entrance of the water flow passage 15 so that the spiral body 27A is accurately inserted and arranged at a predetermined position in the water flow passage 15.

Further, the collar body as the engaging member 27B is replaced by an engaging member 27C which is partially combined with the structure shown by the imaginary line in FIG. 6 (A). That is, at the start end of the spiral body 27A, a vertical rising portion 27a shown in (A) for joining with the collar body serving as the engaging member 27B is integrally attached in a direction perpendicular to the rising portion 27a. And a locking portion 27b made of a linear wire made of synthetic resin or metal. Needless to say, the engaging portion 27b is set to have a length that is longer than the diameter of the water passage 15 and performs the same function as the collar as the engaging member 27B.

Further, it is also possible to adopt a configuration in which the diameter of the spiral body 27A is set to be slightly larger than the diameter of the water passage 15 over a part or the entire length of the spiral body 27A. The configuration shown in FIG. 7 shows a case where a part is set to a size slightly larger than the diameter of the water passage 15. According to this means, when the spiral body 27A is inserted into the water passage 15, it can be easily inserted while slightly reducing the diameter against the elastic repulsion. After insertion, the outer peripheral surface of the spiral body 27A is elastically pressed against the flow path wall of the water flow path 15 by elastic repulsion. As a result, the insertion position and the insertion posture are accurately held. This means,
The structure shown in FIG. 5 can also be adopted. In this case, the locking groove 28 is unnecessary, and the tip of the spiral 27A is locked to the outer wall 15A around the entrance of the water flow path 15.

The provision of the water resistance member 27 has the following effects. That is, even if the water pressure of tap water changes every moment, the flow path resistance in each of the water flow paths 15 can be made constant as much as possible. That is, as the pressure increases, the resistance increases, and the amount of water flow is suppressed. Conversely, when the pressure is reduced, the resistance is reduced, and the water flow amount is not so greatly suppressed. Therefore, the amount of water passing through each of the water passages 15 is substantially constant regardless of the change in the water pressure. As a result, a change in the dilution ratio hardly occurs. Further, due to the presence of the water flow resistance member 27, the tap water flowing down the water flow path 15 becomes a spiral flow (vortex flow).
Therefore, when this reaches the mixing channel 21,
A large turbulence occurs in the mixing channel 21. as a result,
The stirring and mixing with the basic dilution water flowing down the open flow path 11 is performed very efficiently. Therefore, the desired dilution rate of the chemical solution can be continuously sprayed while maintaining the desired set value.

In the structure shown in FIG.
Is connected to this linear tube 1A via a connection hose 6. However, a configuration in which a direct screw connection is used as shown in FIG. 7 can also be adopted. Specifically, the connection cap 3 is formed so as to be gradually tapered toward the sprinkler 5 side, and the mixing channel 21 is formed here. As shown in the figure, the coupling 25 connects the proximal end of the water guide tube 23 of the water sprinkler 5 with a screw. With this configuration, the stopper body 1 and the sprinkler 5 can be handled as an integral object, so that the work efficiency can be further improved.

The configurations of the embodiments can be diverted or combined with each other without departing from the intended purpose of the present invention.

[Brief description of the drawings]

FIG. 1 is a partially cut-away enlarged vertical sectional view showing a main part of a sprinkler for diluting a chemical according to the present invention, with a chemical bottle attached.

FIG. 2 is an enlarged vertical sectional view of a main part of the water tap with the liquid bottle shown in FIG. 1 mounted thereon, showing an embodiment of the water tap for diluting a drug solution according to the present invention.

FIG. 3 is a partially cut-away enlarged cross-sectional view of the embodiment of the water tap for diluting a chemical according to the present invention, taken along line AA in FIG. 1;

FIG. 4 is an enlarged exploded perspective view of a main part, showing an embodiment of a water faucet for diluting a chemical solution according to the present invention.

FIG. 5 is an enlarged vertical sectional view showing a part of a main part showing another embodiment of a water tap for diluting a chemical liquid according to the present invention, showing a part of the faucet.

FIG. 6 is a partially cut-away enlarged longitudinal sectional view of a main part showing an embodiment of a water tap for diluting a chemical solution according to the present invention, showing still another embodiment.

FIG. 7 is an enlarged vertical cross-sectional view of a part of a main part showing a further embodiment of a water tap for diluting a chemical solution according to the present invention.

FIG. 8 is a partially cutaway longitudinal sectional view showing an embodiment of a water tap for diluting a chemical liquid according to the present invention, and showing another connecting means between the tap body and the water sprinkler.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Plug main body, 2 ... Male screw, 3 ... Connection cap, 4 ... Water supply hose, 5 ... Sprinkler, 7 ... Female screw, 8 ... Connection cylinder, 9 ...
Attachment means, 10: chemical liquid bottle, 11: open channel, 11a
... small-diameter flow path, 11b ... large-diameter flow path, 12 ... flow path constriction, 13 ... chemical liquid discharge port, 14 ... chemical liquid suction flow path, 15
... water flow passage, 16 ... on-off valve, 21 ... mixing flow passage, 26 ... recess, 27 ... water flow resistance member, A ... water supply flow passage, G ... open flow passage diameter, G ₁ ... flow passage narrowing portion Flow path diameter, G ₂ : flow path diameter of small diameter flow path, G ₃ : flow path diameter of large diameter flow path, P: piece,
f: flow path of the on-off valve, g: flow path diameter of the water flow path.

Claims (4)

[Claims] 1. A water supply hose connection at one end,
At the other end, there are a plurality of water passages that are opened and closed by an on-off valve, and tap water can always flow down to the stopper body that has a sprinkler connection part with a sprinkler nozzle at the tip, and located at the top The set open flow paths are arranged independently of each other, and the open flow paths are a small-diameter flow path dedicated to sucking a chemical solution at an upper position and a large-diameter flow path dedicated to tap water flow at a lower position. The small-diameter flow path is formed with a flow-rate increasing flow path in which the flow path diameter is partially narrowed, and the liquid bottle mounting means provided on the upper peripheral wall of the stopper body. The flow rate increasing flow path is connected to a chemical liquid suction flow path through which the chemical liquid in the chemical liquid bottle is sucked, and is connected to the chemical liquid suction flow path by the jet water flow of tap water flowing down the flow velocity increasing flow path. Aspirate the drug solution from the road, mix it with tap water, All the flow paths, including the open flow path, are formed so as to be joined at the tip thereof and flow down to the sprinkling nozzle, and one or more of the water flow paths and a combination of the open flow path A spigot for diluting a chemical, wherein the spigot is configured to change a dilution rate of the chemical. 2. The plug body provided with the water flow passage and the open flow passage is formed of a straight pipe, and the connection between the water supply hose and the sprinkler is made by the straight pipe. The water tap according to claim 1, which is performed through a connector that is screwed into screws formed at both front and rear ends of the body. 3. The open flow path has a narrow flow path portion including a bottle mounting means, which is formed separately from the stopper body, and is formed into a small-diameter flow path dedicated to sucking the chemical solution. 2. The sprinkling tap for chemical solution dilution according to claim 1, wherein the flow path section is fixed in a mounting recess formed in the plug main body in a continuous manner. 4. The water tap according to claim 1, wherein a water flow resistance member is provided in each of the water flow paths other than the open flow path.