JPH052752U - Chemical spray nozzle - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a drug solution spray nozzle that can spray a required amount of a drug solution in a short time and has extremely little splash of the drug solution around. [Composition] A chemical liquid introducing pipe, an inner pipe communicating with the chemical liquid introducing pipe, having a plurality of discharge holes arranged in an axial direction, and having a total area of the discharge holes larger than a cross-sectional area of the inner pipe. The liquid passage pipe provided on the outer circumference of the pipe, and the long hole whose longitudinal direction substantially coincides with the axial direction on the side of the liquid passage pipe that does not coincide with the discharge hole side of the inner pipe, and is larger than the total area of the discharge holes. A chemical spray nozzle consisting of an outer tube with a large-area spray hole.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to the structure of a chemical spray nozzle. In particular, the present invention relates to a structure of a chemical solution spray nozzle which is suitable for spraying a contact-type side bud suppressant for tobacco plants and which can spray a necessary chemical solution in a short time and has a small dispersion of the chemical solution.

[0002]

[Prior Art]

 As a spray nozzle suitable for spraying the contact-type side bud inhibitor on tobacco plants, there is, for example, a contact-type side bud inhibitor spraying device (Japanese Patent Laid-Open No. 63-296623).

[0003]

[Problems to be Solved by the Invention]

 The above-mentioned conventional spraying nozzle has a problem that the spraying amount per unit time is small and it takes time to spray the required spraying amount one by one. As a result of diligent research to solve this problem, the inventor has obtained new knowledge about a chemical solution spray nozzle that can spray a predetermined amount of chemical solution in a short period of time and that has extremely little scattering of the chemical solution around. The present invention aims to provide a chemical spray nozzle having a new structure based on this finding.

[0004]

[Means for Solving the Problems]

 This invention has a chemical liquid introducing pipe and an inner pipe communicating with the chemical liquid introducing pipe and having a plurality of discharge holes arranged in the axial direction, wherein the total area of the discharge holes is larger than the cross-sectional area of the inner pipe. The liquid passage provided on the outer circumference of the inner pipe and the long hole on the outer periphery of the liquid passage that does not coincide with the discharge hole side of the inner pipe and whose longitudinal direction substantially coincides with the axial direction. The gist is a chemical spray nozzle that is composed of an outer tube with a spray hole that is larger than the total area.

The chemical liquid introduction pipe is connected to an appropriate chemical liquid supply device (container), and the supply or stop of the chemical liquid is operated by an operator by providing a conventionally known valve or cock. The inner pipe communicating with the chemical liquid introducing pipe is closed at its tip, and is provided with a plurality of discharge holes arranged in the axial direction of the inner pipe. The total area of the multiple discharge holes is set to be larger than the vertical cross-sectional area of the inner pipe cut at a right angle to the axis of the inner pipe. Preferably, the total area of the discharge holes is more than twice the vertical cross-sectional area of the inner pipe. A liquid passage pipe is provided on the outer periphery of the inner pipe. The liquid passage tube is made of a plate-like material such as a wire mesh (for example, stainless mesh), a perforated plate, or the like through which the chemical liquid can pass. The outer pipe is provided further outside the liquid passage pipe. A jet hole, which is a long hole having a longitudinal direction substantially coinciding with the axis, is provided on the side portion of the outer tube. The area of the spray holes is larger than the total area of the discharge holes. Preferably, the area of the jet holes is several times the total area of the ejection holes. The side of the inner pipe where the discharge hole is located does not coincide with the side of the outer pipe where the jet hole is located. The non-coincidence means that there is no ejection hole in the ejection direction of the ejection hole, and preferably the ejection hole exists in the direction opposite to the ejection direction of the ejection hole.

[0006]

[Action]

 The chemical solution spraying nozzle of the present invention has a low speed of spraying the chemical solution due to the above-described configuration, but the chemical solution is discharged from the spray holes having a large area, so that the required amount of the chemical solution can be sprayed in a short time. Since the ejection speed is low, the chemical liquid is also less scattered. Regarding the way the chemical solution is ejected from the injection hole, the chemical solution ejection speed on the tip side of the injection hole is slightly high, and the chemical solution ejection speed on the rear end side is slightly small. Be sprayed.

[0007]

【Example】

 An embodiment of the chemical liquid spraying nozzle of the present invention will be described with reference to FIGS. 1, 2 and 3. 1 is a plan view, FIG. 2 is a side sectional view taken along the line AA of FIG. 1, and FIG. 3 is a front sectional view taken along the line BB of FIG.

Reference numeral 1 is a chemical liquid spray nozzle of the present invention, 2 is a chemical liquid introducing pipe, and 3 is an inner pipe communicating with the chemical liquid introducing pipe 2. Reference numeral 4 denotes a plurality of discharge holes provided in the inner pipe 3. The discharge holes 4 are provided side by side in the axial direction of the inner tube 3. The total area of the plurality of discharge holes 4 is set to be twice the area of the cross-sectional area of the inner pipe 3. A liquid passage pipe 5 is provided on the outer periphery of the inner pipe 3. The liquid passage pipe 5 is made of stainless mesh. Reference numeral 6 denotes an outer pipe provided outside the liquid passage pipe 5. The rear end of the outer tube 6 is fixed to the outside of the front end of the drug solution introducing tube 2. A stopper 7 is fixed to the tip of the outer tube 6. The tip of the inner tube 3 is also fixed to the stopper 7. Reference numeral 8 denotes a long hole-shaped jet liquid hole provided in the outer pipe 6, and the longitudinal direction of the liquid jet hole 8 and the axis of the outer pipe 6 are aligned. The area of the jet holes 8 is set to be 5 times the total area of the ejection holes 4. The discharge direction of the discharge hole 4 is provided on the lower side in FIG. 2, whereas the liquid jet hole 8 is provided on the opposite side, the upper side in FIG.

A chemical solution supplied from a chemical solution feeder (not shown) is introduced into the inner tube 3 via the chemical solution introduction tube 2. Since the tip of the inner tube 3 is closed by the stopper 7, the chemical liquid is discharged from the discharge hole 4. The discharged chemical liquid passes through the liquid passage pipe 5 outside the inner pipe 3, but passes through between the inner pipe 3 and the outer pipe 6, and is sprayed from the injection hole 8. Since the shape of the spray hole 8 is a long hole that coincides with the axis of the outer tube 6, it ejects in the form of a thin film that spreads across the width of the long hole. The ejection speed of the drug solution on the end side is slightly low, so it is ejected in a twisted manner. As a result, the spread of the drug solution in the horizontal direction is twisted and changes in the vertical direction, and the chemical liquid is sprayed in a vertically elongated shape along the tobacco trunk. Since the area of the jet holes 8 is set to 5 times the total area of the jet holes 4, the speed of the chemical liquid ejected from the jet liquid holes 8 is greatly reduced, so that the chemical liquid is scattered. There is no such thing. Further, since the area of the spray hole 8 is large, the amount of the liquid medicine to be sprayed per unit time is large, and the required amount of the liquid chemical can be sprayed in a short time.

[0010]

【The invention's effect】

 By using the chemical spray nozzle of the present invention, in particular, the time for spraying the contact-type side bud inhibitor on tobacco plants can be significantly reduced and the spray of the chemical can be prevented.

[Brief description of drawings]

1 is a plan view

FIG. 2 is a side sectional view taken along line AA of FIG.

3 is a front sectional view taken along line BB of FIG.

[Explanation of symbols]

 1 chemical spray nozzle 2 chemical introduction pipe 3 inner pipe 4 discharge hole 5 liquid passage pipe 6 outer pipe 7 plug 8 jet liquid hole

Claims (1)

[Claims for utility model registration] [Claim 1] A chemical liquid introducing pipe and a plurality of discharge holes communicating with the chemical liquid introducing pipe and arranged in the axial direction. The total area of the discharge holes is larger than the cross-sectional area of the inner pipe. The inner pipe set so that, the liquid passage pipe provided on the outer periphery of the inner pipe, the outer periphery of the liquid passage pipe, the side that does not coincide with the discharge hole side of the inner pipe, the longitudinal direction substantially coincides with the axial direction A chemical spray nozzle consisting of a long hole and an outer tube provided with a spray hole having an area larger than the total area of the discharge holes.