JPH0437634Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a spraying hose that is connected to a power sprayer and is used for spraying powder and granules such as agricultural chemicals.

[Prior Art] In the invention disclosed in Japanese Patent Application No. 173985/1985, spray ports are drilled at appropriate intervals in the longitudinal direction, and a discharge body having an air intake port in the middle portion in the axial direction is attached to the spray ports. However, in this case, when distributing powder, air is sucked in from the air intake as the powder passes through the discharge body, and the air is removed from the discharge body. Although it has the role of improving the jetting properties of granules, the spraying hose is not provided with an adjustment member for adjusting the flow cross-sectional area of the air intake port.

[Problem that the invention aims to solve] The optimal value for the amount of air taken in from the air intake port varies depending on the type of powder, but with conventional spray hoses, the amount of air taken in from the air intake port is the target of spraying. It has become difficult to adjust the value to the optimum value depending on the degree of growth or the type of powder or granule.

[Means for Solving the Problems] The purpose of this invention is to provide a spraying hose that can adjust the amount of air taken in from the air intake port to an optimum value. In the case where the dispersion ports are bored at intervals and the discharge body has the air intake port in the axially intermediate portion, the discharge body is attached to the dispersion port, and the air intake port has an adjusting member for adjusting the flow cross-sectional area thereof. The present invention proposes a spraying hose characterized by the following:

[Embodiments] This invention will be described below with reference to embodiments of the drawings.

FIG. 15 shows the usage status of the spraying hose 10,
The spraying hose 10 is connected to a discharge port of a power spreader 12, and spray ports 14 are bored at appropriate intervals on the lower surface of the spray hose 10, and a discharge body 16 is connected to each spray port 14.
is attached to.

Figures 1 to 5 show a first embodiment;
2 is a sectional view taken along the - line in FIG. 1, FIG. 3 is a plan view of the discharge body 16, FIG. 4 is a plan view of the adjustment member 26, and FIG. FIG. The discharge body 16 has a small diameter portion 18 connected to the dispersion port 14 at the upper end, and a large diameter portion 20 continuous to the lower end of the small diameter portion 18,
A stepped portion 22 is formed between the small diameter portion 18 and the large diameter portion 20. A plurality of air intake ports 24 are bored in this stepped portion 22 and extend in an arc shape in the circumferential direction. The adjustment member 26 has a cylindrical portion 28 that fits on the outer periphery of the small diameter portion 18, and an opening/closing portion 30 that is made up of a plurality of fan-shaped portions and slides on the upper surface of the stepped portion 22, and is slidable in the circumferential direction. Discharge body 1
6 is fitted. Due to the relative rotation of the adjustment member 26 with respect to the discharge body 16, the flow cross-sectional area of the air intake port 24 changes.
The amount of air intake from the

6 and 7 show a second embodiment, in which FIG. 6 is a longitudinal sectional view and FIG. 7 is a perspective view of the adjustment member 26. The protruding portion 32 extends from the lower end of the small diameter portion 18 over the stepped portion 22 toward the large diameter portion 20, and has the function of smoothing air intake from the air intake port 24. The adjustment member 26 has a large diameter portion 20
a cylindrical portion 34 that slides on the outer periphery of the cylindrical portion 34;
The opening/closing part 36 extends radially inward from the opening and closing part 36 and slides on the upper surface of the stepped part 22 to control the flow cross-sectional area of the air intake port 24. By rotating the adjustment member 26, the flow cross-sectional area of the air intake port 24 changes, and the amount of air taken in from the air intake port 24 is adjusted.

8 to 10 show a third embodiment, in which FIG. 8 is a longitudinal sectional view, FIG. 9 is a perspective view, and FIG. 10 is a perspective view of the discharge body 16. The lower end of the large diameter portion 20 is a tapered portion 38 that widens toward the end, and an air intake port 40 is bored in the large diameter portion 20 near the stepped portion 22 . The adjustment member 26 is connected to the stepped portion 2 of the discharge body 16.
2 and has a cylindrical opening/closing portion 42 that slides on the outer periphery of the large diameter portion 20 and an end surface portion 44 that slides on the upper surface of the step portion 22. A long hole 46 is bored in the cylindrical opening/closing part 42 in correspondence with the air intake port 40.
It extends to a predetermined length in the circumferential direction. Discharge body 16
By rotating the adjustment member 26 relative to the air intake port 40, the area where the air intake port 40 and the elongated hole 46 match, that is, the flow cross-sectional area of the air intake port 40 changes, and the amount of air taken in from the air intake port 40 changes. be adjusted.

FIG. 11 shows the adjusting member 26 of FIGS. 8 and 10.
FIG. 3 is a perspective view of a modification example in which a notch 48 that opens at the lower end of the cylindrical opening/closing part 42 is formed in correspondence with the air intake port 40 of the discharge body 16 . By rotating the adjustment member 26 in the circumferential direction,
The overlapping area of the air intake port 40 and the notch 48 of the discharge body 16, that is, the flow cross-sectional area of the air intake port 40 changes, and the amount of air intake from the air intake port 40 is adjusted.

FIG. 12 is a longitudinal sectional view of the fourth embodiment, in which the stepped portion 22 of the discharge body 16 is oblique with respect to the small diameter portion 18 and the large diameter portion 20. Adjustment member 26
has cylindrical parts 50 and 52 that fit on the outer peripheries of the small diameter part 18 and the large diameter part 20, respectively, and an inclined opening/closing part 54 that connects these cylindrical parts 50 and 52 and slides on the step part 22. There is. A window 56 is bored in the inclined opening/closing part 54 corresponding to the air intake port 24, and the overlapping area of the air intake port 24 and the window 56, that is, the air The flow cross-sectional area of the air intake port 24 changes, and the amount of air taken in from the air intake port 24 is adjusted.

13 and 14 show how the discharge body 16 is connected to the spray port 14 of the spray hose 10. In FIG. 13, the discharge body 16 is fixed to the spray port 14. In FIG. 14, a threaded groove 58 is formed at the joint between the dispersion port 14 and the discharge body 16, and the discharge body 16 is removably screwed into the dispersion port 14. In FIG. 14, the discharge body 16 can be easily replaced depending on the type of powder to be sprayed.
Furthermore, by leaving the discharge body 16 as it is and attaching a window 56 of the adjustment member 26 with a different size, the amount of overlapping area of the discharge body 16 with the air intake port 24 can be changed and the amount of air intake can be adjusted. becomes possible.

[Effect of the invention] As described above, according to this invention, the flow cross-sectional area of the air intake port of the discharge body can be adjusted by the adjustment member, and as a result, the amount of air taken in from the air intake port can be adjusted, and the flow rate of the discharge body can be adjusted. This has the effect that the ejection of powder and granules from the sprayer can be optimized depending on the growth level of the object to be sprayed or the type of powder and granules.

[Brief explanation of the drawing]

The drawings show various embodiments of this invention, and FIGS. 1 to 5 show the first embodiment, FIG. 1 is a longitudinal sectional view, and FIG. 2 is a sectional view taken along the line - in FIG.
FIG. 3 is a plan view of the discharge body, and FIG. 4 is the adjustment member 26.
, FIG. 5 is a perspective view of the adjusting member, FIGS. 6 and 7 show the second embodiment, FIG. 6 is a longitudinal sectional view, FIG. 7 is a perspective view of the adjusting member, and FIG. 8 is a plan view of the adjusting member. 10 to 10 show the third embodiment, and FIG. 8 is a longitudinal sectional view;
FIG. 9 is a perspective view, FIG. 10 is a perspective view of the discharge body, FIG. 11 is a perspective view of a modification of the adjustment member shown in FIGS. 8 and 10, and FIG. 12 is a longitudinal sectional view of the fourth embodiment. , FIG. 13 and FIG. 14 are diagrams showing how the discharge body is connected to the spraying port of the spraying hose, respectively, and FIG. 15 is a diagram showing how the spraying hose is used. In the figure, 10...dispersion hose, 14...dispersion port, 16...discharge body, 24, 40...air intake port, 26...adjustment member.

Claims (1)

[Claims for Utility Model Registration] (1) Spraying ports 14 are bored at appropriate intervals in the longitudinal direction, and the discharge body 16 has air intake ports 24 and 40 in the middle part in the axial direction. A spraying hose attached to the port 14, characterized in that the air intake ports 24, 40 are provided with an adjustment member 26 for adjusting the flow cross-sectional area thereof. (2) The discharge body 16 has a stepped shape in which the inner diameter on the discharge side is larger than the inner diameter on the suction side, and the air intake ports 24 and 40 are connected to the stepped portion 2 of the discharge body 16.
2. The spraying hose according to claim 1, which is characterized in that the hose is provided with a hole in the side surface near the stepped portion 22. (3) The adjustment member 26 is fitted into the stepped portion 22 of the discharge body 16 so as to be rotatable in the circumferential direction. Spraying hose.