JPH01281161A - Spreader - Google Patents

Abstract

PURPOSE:To achieve uniform spreading, preventing materials to be spread from interfering with each other to avoid their degradation by forming a cylindrical spreader head connected to the body of a spreading machine into an arc, and providing spreader holes on the projecting side of the bent spreader head in a longitudinal direction thereof. CONSTITUTION:A spreader head 7 is connected to the body of a spreading machine 1 so that materials to be spread in the form of particles (e.g., unhulled rice coated with germination accelerating agent) are spread from the head 7, wherein the head 7 is formed into an arc, on the projecting side of which spreader holes 8 being formed in a longitudinal direction of the cylindrical head. When the head 7 is used with the spreader holes 8 directed upward, the materials to be spread are spread upwardly in a forward direction, without being subjected to impulse, and fall freely approximately vertically onto the surface of the earth. Consequently, the materials are uniformly spread over the surface of the earth without being degraded.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a spreader.

(Prior Art) Conventionally, a straight cylindrical nozzle head 41 with an open tip is connected to the main body of a sprayer as shown in FIG.
Starting from 1, powder and granular material is being spread over a wide area.

That is, a plurality of spray ports 42 are formed in the nozzle head 41 in the longitudinal direction of the cylinder, and a partition wall 43 is provided at the position of each spray port 42 to cause the material to be sprayed to collide with the spray ports.

Then, as shown in FIG. 9, spraying is performed with the spraying port 42 at the bottom and the nozzle head 41 held slightly upward. At this time, the material to be spread collides with each barrier wall 43, changes its direction of travel, and is spread from each spreading port 42.

(Problem M to be Solved by the Invention) The conventional jet head 41 sprays the material to be sprayed by colliding with the barrier wall 43. For example, when spraying rice grains coated with a germination promoter, The impact of impact may cause the coating agent on the fir tree to fall off or cause the fir tree to crack.

Moreover, since the fir sprinkled from the proximal side of the jet head 41 has a shorter falling distance than the fir from the tip side, it hits the ground surface more vigorously and the falling angle θ is small.

Therefore, the mass of rice is reflected in the direction of the tip of the jet head 41, and therefore the density of the mass of the mass on the hand side becomes sparse, and there is a drawback that it is not possible to spread the mass uniformly.

In view of these conventional problems, an object of the present invention is to provide a sprayer that eliminates the collision of the spray head of the material to be spread, and can spray the material uniformly without damaging the material to be spread. shall be.

(Means for Solving the Problems) The technical means taken by the present invention to achieve the above object are as follows.

In a spreader that connects a cylindrical jet head 7 to the sprayer main body 1 and spreads powdery material to be spread from this jet head 7, the jet head 7 is curved in an arc shape, and the curved jet head 7 is curved. The dispersion port 8 is formed on the convex side in the longitudinal direction of the cylinder.

(Function) Hold the jet head 7 so that the spray port 8 is located at the top (so that the jet head 7 is convex upward). Since the jet head 7 is formed in an arc shape, the material to be spread conveyed from the tank 4 by the fan's air is smoothly transported inside the jet head 7 toward the tip side.

At this time, since the spray port 8 is provided on the convex side of the jet head 7, the material to be sprayed is sprayed! ! ! ? The material is vigorously sprayed upward from the spray port 8 without receiving much resistance from the sides. The scattered material falls freely almost perpendicularly to the ground surface in a parabola and is not reflected on the ground surface.

(Example) Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

Figure 3 shows a backpack-type power spreader, in which 1 is the main body of the spreader, which includes a casing 2 with a fan inside, an engine 3 that drives the fan, and a storage tank 4 for materials to be spread that can be used for both liquid and powder. and a discharge pipe 5 for discharging the material (powder and granular material) in the tank 4 by blowing air from a fan, and a jet head 7 is detachably attached to the discharge pipe 5 via a flexible pipe 6. It is connected to the.

The jet head 7 is made of synthetic resin, metal, or the like, and has a cylindrical shape with an open end, as shown in FIGS. 1 and 2, and is curved into an arc in the longitudinal direction of the cylinder. An opening 8 having the same width is formed in the curved convex side of the nozzle head 7 from the tip to the middle in the longitudinal direction of the cylinder, and this opening 8 is used as a dispersion port for the material to be spread.

Reference numeral 10 denotes an adjustment tool that is fitted onto the jet head 7. Both ends of the adjustment tool 10 are bent, and an adjustment bolt 11 is screwed into the bent portion 10a. The adjustment tool 10 is used to adjust the opening of the spray opening 8 so that the amount of the material to be sprayed can be adjusted.

When using the above-described sprayer to spray rice coated with a germination promoter, for example, the jet head 7 is held so that the spraying port 8 is located at the top, as shown in FIG.

The rice grains are conveyed to the tip side of the jet head 7 along the inner circumferential surface of the jet head 7 by air blown from the fan. At this time, since the jet head 7 has a cylindrical cross-sectional shape and is curved in an arc shape, the rice is smoothly conveyed inside the jet head 7, and the rice is transported through the spraying port 8 and the opening at the tip of the jet head 7 without receiving any impact from collision. It is scattered forward and upward. Since the scattered fir trees naturally fall approximately perpendicularly to the ground surface in a parabola, the falling positions of the fir trees do not change and the falling distribution becomes uniform. Moreover, the coating agent will not fall off or the massager will crack.

In addition, the spray head 7 is only provided with the dispersion port 8, and there is no need to provide a barrier as in the conventional case, so the structure of the jet head 7 is simple and easy to manufacture.

Other embodiments are shown in FIGS. 5 to 7, and the one shown in FIG. 5 has a plurality of spray ports 8 formed in the longitudinal direction of the cylinder,
A rib 12 is provided between each spray port 8. Therefore, by providing the ribs 12, the jet head 7 can be reinforced. Note that the ribs 12 are of a size that does not interfere with the spreading of rice.

FIG. 6 shows a dispersion port 8 consisting of a wide portion 8a and a narrow portion 8b, and the wide portions 8a and narrow portions 8b are provided alternately.

Figure 7 shows that the width of the spraying port 8 gradually narrows toward the tip of the jet head 7.On the contrary, this spraying port 8
The width may be gradually increased.

Note that the present invention is not limited to the above embodiments, and the cross-sectional shape of the jet head 7 may be polygonal or the like, and the length and diameter of the jet head 7 and the shape of the dispersion port 8 may be set as desired. It is determined appropriately depending on the amount of the material to be sprayed and the shape of the material to be sprayed. Further, the jet head may be configured to be able to be divided into a plurality of parts.

(Effects of the Invention) In the present invention, the jet head 7 is formed in a circular arc shape, and the spraying port 8 is formed in the longitudinal direction of the cylinder on the curved convex side of the jetting head 7, so that the spraying port 8 is located on the upper side. If the jet head 7 is used in this way, the material to be spread will be scattered forward and upward without being subjected to impact, and will fall freely almost perpendicularly to the ground surface, so that it will be spread evenly over the ground surface without damaging the material to be spread. Can be sprayed.

Further, unlike the conventional method, there is no need to provide a barrier wall at the position of each dispersion port 8 of the jet head 7, so that the jet head 7 has a simple structure and is easy to manufacture.

[Brief explanation of the drawing]

1 to 4 show one embodiment of the present invention, FIG. 1 is a perspective view of the jet head, FIG. 2 is a sectional view taken along the line ■-■ in FIG. FIG. 4 is an explanatory diagram showing the state of use, FIGS. 5 to 7 show other embodiments, and FIG. 5 is a perspective view of the jet head.
Figures 6 and 7 are plan views of the main parts of the eruption head, Figures 8 and 9.
The figures show a conventional example, FIG. 8 is a sectional view of the jet head, and FIG. 9 is an explanatory view showing the state of use. 1... Spreader main body, 7... Spray head, 8... Spraying port.

Claims (1)

[Claims] (1) In a spreader in which a cylindrical jet head 7 is connected to the sprayer main body 1 and a powdery material to be spread is spread from this jet head 7, the jet head 7 is curved in an arc shape, and the jet head 7 is curved. A sprayer characterized in that a spraying port 8 is formed in the longitudinal direction of the cylinder on the curved convex side.