JP4572044B2 - Liquid spray tube - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a spray pipe for spraying liquids such as water, disinfectant liquid, and liquid fertilizer to soil or plants.
[0002]
[Prior art]
When spraying the above liquid on soil or plants, one way is to spray and rotate the tube using a tube or hose fitted with a spray nozzle at the tip, but this is clearly inefficient. It is only for small farms. When it is necessary to spray the liquid over a large area of the farm, a pipe spraying method is used in which a pipe is provided so as to cover the entire farm and the liquid is ejected from each part of the pipe.
[0003]
Regardless of how wide the plantation plant is spread, a liquid source is generally provided only in one place, and therefore, a branching device called a header is used to supply the sprayed liquid from the liquid source to the pipes of each plantation. That is, a header is provided at each location of a primary pipe (also referred to as a main pipe) that extends directly from the liquid source, and a plurality of secondary pipes are branched from the header. When the spraying area is wider, the secondary pipe is branched by providing a header in the secondary pipe. In the final-stage pipe branched in this way, nozzles are provided almost evenly as shown in FIG. 1, and the liquid is sprayed to a predetermined assigned area.
[Problems to be solved by the invention]
[0004]
Thus, when branching at the header, there has been a problem of non-uniformity in the amount of application. This is a problem in the final-stage piping. When the nozzles 11 are evenly provided in the respective portions of the piping 12 as shown in FIG. 1, the liquid supply pressure to the nozzles 11 decreases as the distance from the liquid source (supply source) side increases. However, this phenomenon appeared as a decrease in supply. In order to prevent such non-uniformity, conventionally, the pipe 12 is made as thick as possible to minimize a decrease in supply pressure due to distance, and the ejection pressure from the nozzle 11 (that is, the ejection amount) is substantially uniform. I was trying to be. However, in this method, the pipe 12 must be made thicker, the pipes in the previous stage must be made thicker than that, and the headers in each stage are also for large diameters corresponding thereto. Must be used. For this reason, there existed a fault that the whole installation became large scale and cost became high. In addition, the amount of liquid in the pipe is enormous, and there is a problem that the amount of residual liquid in the pipe is larger than the amount of spray.
[0005]
The present invention has been made to solve such a problem, and the object of the present invention is to spray the liquid evenly to the spray target without unnecessarily increasing the amount of liquid in the pipe. The object is to provide a liquid spray tube that can be used.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, the liquid spraying pipe according to the present invention is
a) a sheath tube provided with a plurality of discharge ports at appropriate intervals;
b) a branching device housed in the sheath tube and connected to the parent tube;
c) is also accommodated in the sheath tube and is an equal-length child tube connecting the branching device and the discharge ports;
It is characterized by providing.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
In the liquid spraying pipe according to the present invention, the branching device is connected to the parent pipe, and a nozzle, a sprinkler, and the like are provided at the outlet of the sheath pipe or the tip of the child pipe protruding therefrom. Since all of the branch ports are connected to the discharge ports by pipes having an equal length, the liquid pressures at the discharge ports are all equal. For this reason, an equal amount of liquid is sprayed from each discharge port or nozzle. In addition, since each child tube can have a minimum diameter necessary for applying a predetermined ejection pressure to the discharge port or nozzle, the amount of liquid in the pipeline can be minimized. it can. And since all these child tubes are stored in one sheath tube, handling and laying are easy, and efficiency improves also in laying (and removal) work.
[0008]
In addition, in order to increase the number of discharge ports, a branching device may be further provided at the tip of the child tube, and branched from there to a plurality of grandchild tubes. Further, the subsequent branches may be similarly branched. In these cases, it is a matter of course that the combined length of the child tube, the grandchild tube, etc., that is, the length from the branching device to the discharge port of the sheath tube is all equal.
[0009]
【Example】
A liquid (water, liquid fertilizer, insecticide, etc.) spraying system as an embodiment of the liquid spraying pipe according to the present invention will be described with reference to FIGS. As shown in FIG. 2, the liquid spraying system of this embodiment includes a liquid supply source 20, a parent pipe 21 connected to the supply source 20, a header 22 connected to the parent pipe 21, and a plurality of branches branched from the header 22. It consists of a spray tube 23 and the like. A liquid spray pipe according to the present invention is used for the spray pipe 23. The plurality of spraying tubes 23 may be arranged in parallel along the farm ridges as shown in FIGS. 2 and 3, or may be arranged radially (not shown). The arrangement is optional.
[0010]
As the liquid supply source 20, it is desirable to use a pneumatic feed type as shown in FIG. There are two advantages to using this, one is that the pump 201 is not invaded by liquids such as drugs. The other is to prevent stagnation of liquid in the piping (parent pipe 21, header 22, liquid spraying pipe 23, etc.) by pumping only air to the nozzle of the liquid spraying pipe 23 at the end of the liquid spraying. It can be done. As a result, waste of liquid is eliminated, and damage to the pipe 21 and the header 22 due to freezing in winter can be prevented.
[0011]
As the header 22 in FIG. 2, a conventionally used header can be used.
[0012]
The structure of the liquid spray tube 23 is shown in FIG. A branching device 25 is provided at the tip of the second parent tube 24 drawn from the header 22 in FIG. 2, and four child tubes 261 to 264 are branched from the branching device 25. All of the four child tubes 261 to 264 have the same length, and two tubes are disposed in front of the branching device 25 (one farther from the liquid source, the right side in FIG. 4) and two behind each. Of the child tubes 261 and 262 arranged in the front, one child tube 261 goes to the forefront as it is, but the other child tube 262 is folded back and returned to the rear. The same applies to the two child tubes 263 and 264 disposed behind the branching device 25. T-shaped second branching devices 271 to 274 are provided at the tips of the child tubes 261 to 264, and two further grandchild tubes 281 to 288 are branched from the second branching devices 271 to 274. The second parent pipe 24, the branching device 25, the four child tubes 261 to 264, the four second branching devices 271 to 274, and the eight grandchild tubes 281 to 288 are all in one sheath tube 29. It is stored in.
[0013]
The distal ends of the grandchild tubes 281 to 288 are taken out of the sheath tube 29 through holes provided at substantially equal intervals in the entire length of the sheath tube 29, and the spray nozzles 301 to 308 are fixed thereto, respectively.
[0014]
As described above, in the liquid spray tube 23 of the present embodiment, the lengths of the tubes from the branching device 25 to the nozzles 301 to 308 are all equal. The pressures are all equal, and an equal amount of liquid is always sprayed from each nozzle 301-308.
[0015]
In addition, as shown in FIG.4 (b), the liquid distribution tube which concerns on this invention can also be provided in series. When used in this way, the second parent pipe 24 is connected to each liquid spray pipe 23.
[0016]
An example of a specific structure of the branching device 25 is shown in FIG. This branching device 25 is obtained by projecting a T-shaped pipe 252 at a substantially equal angle around a body tube 251 having the same diameter as the second parent tube 24.
[0017]
An example of a specific structure of the second branching device 27 is shown in FIG. This also basically comprises a T-shaped pipe.
[0018]
Metal pipes may be used for the child pipes 261 to 264 and the grandchild pipes 281 to 288, but in order to facilitate laying and storage (and for cost reduction), a pipe such as vinyl should be used. Is desirable. In this case, it is desirable to use the metal pipe 31 as shown in FIG. 5 (c) at the turning point for the child pipes 262 and 263 that are turned back in the sheath pipe. Thereby, it becomes possible to prevent narrowing at the turning point and to ensure uniform spraying.
[0019]
As the sheath tube 29, it is desirable to use a corrugated tube. Thereby, both strength and flexibility can be provided, and the required performance of both the ease of laying and the durability during use can be satisfied.
[0020]
Another embodiment of the liquid spray pipe according to the present invention is shown in FIG. FIG. 6A shows the branching device 25 arranged at the end of the sheath tube 29. Thereby, it is not necessary to house the second parent tube 24 in the sheath tube 29, and the overall thickness of the sheath tube 29, that is, the liquid spray tube 23 can be made small and flexible. FIG. 6 (b) shows the case where the secondary tube is not folded but branched to the third stage instead.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a conventional spray tube.
FIG. 2 is a schematic configuration diagram of a liquid spraying system using a liquid spraying pipe according to the present invention.
FIG. 3 is an explanatory diagram showing an example of a method for arranging a liquid spray tube.
FIG. 4 is a schematic configuration diagram of a liquid spray pipe according to an embodiment of the present invention. Among these, (a) shows a single use state, and (b) shows a series use state.
FIG. 5 is a perspective view showing an example of a branching device (a), a second branching device (b), and a folded pipe (c).
FIG. 6 is a schematic configuration diagram of another embodiment of the liquid spray pipe according to the present invention, in which (a) shows a branching device arranged at the end of the liquid spray pipe, and (b) shows a branch to the third stage. It is what I did.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 ... Nozzle 12 ... Pipe 20 ... Liquid supply source 201 ... Pump 21 ... Parent pipe 22 ... Header 23 ... Liquid dispersion pipe 24 ... Second parent pipe 25 ... Branching devices 261-264 ... Subtubes 271-274 ... Second branching device 281, 288 ... grandchild tube 29 ... sheath tube 301, 308 ... nozzle

Claims (4)

a) a sheath tube provided with a plurality of discharge ports at appropriate intervals;
b) a branching device housed in the sheath tube and connected to the parent tube;
c) is also accommodated in the sheath tube, and an equal-length child tube connecting between the branching device and the discharge ports;
A liquid spraying tube characterized by comprising: 2. The liquid spraying pipe according to claim 1, wherein each of the sub pipes is further connected with a sub branching device and a plurality of equal length grandchild pipes connected thereto. 3. The liquid spraying pipe according to claim 1, wherein the branching device is connectable in the middle of the parent pipe. 4. The branching device according to any one of claims 1 to 3, wherein the branching device comprises a main body pipe having substantially the same diameter as the main pipe, and a plurality of T-shaped pipes radially provided at substantially equal intervals around the main body pipe. A tube for spraying liquid.

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