JPH10136736A - Fertilizer distributor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To widen a distribution angle by incorporating a pair of distribution plates in the fertilizer distributor of a form provided with the mixing function of fertilizers without changing the constitution. SOLUTION: In this fertilizer distributor for which a fertilizer mixing function is provided by providing an agitation device 6 inside a fertilizer hopper 2 and a diffusion chamber 14 is connected and provided on the lower surface of the bottom plate 2a of the fertilizer hopper 2, a pair of delivery holes 19a are oppositely opened on the left and right at the bottom plate 16 of the diffusion chamber 14, a pair of the distribution plates 20 equipped with distribution blades 21 on an upper surface side are oppositely pivotally supported on the left and right at the lower part of the diffusion chamber 14 and delivery chutes 22 for guiding the fertilizer dropped through the delivery holes 19a to the almost center part of the distribution plates 20 are disposed to the lower surface side of the pair of the delivery holes 19a opened on the bottom plate 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a fertilizer spreader for spraying powdery or granular fertilizer on a field.

[0002]

2. Description of the Related Art FIGS.
2 and the embodiments shown in FIGS. 3 and 4 are conventionally known.

In the former fertilizer spreader shown in FIGS. 1 and 2, a fertilizer hopper 2 formed in the form of a large-diameter drum whose axial direction is up and down is mounted on a supporting machine frame 1. A stirrer 6 that rotates around a drive shaft 26 provided at an axial center portion is mounted in the lumen to form a fertilizer hopper 2 lumen in the fertilizer mixing chamber 4, and a bottom plate 2a of the fertilizer hopper 2 is formed. ,
At a position deviated to one side in the radial direction from the rotation center of the stirrer 6, a discharge port 9 whose opening is adjusted by a shutter 10 is opened, and a small diameter whose vertical direction is an axial direction is provided on the lower surface side thereof. A diffusion chamber 14 formed by a cylindrical wall 13 formed into a drum shape and a bottom plate 16 is connected and installed.
An agitator 15 which is rotated by an agitator shaft 30 in a vertical direction is provided in the inside 4, and a feeding hole 19 is formed in a bottom plate 16 of the diffusion chamber 14, and the agitator shaft 30 is provided below the feeding hole 19. A disk-shaped spray plate 20 that rotates while sharing the lower end side is provided, and spray blades 21 are provided on the upper surface thereof.

[0004] Thus, the fertilizer in the fertilizer hopper 2 is stirred by the stirrer 6, and from the outlet 9 provided in the floor plate 4 a of the fertilizer mixing chamber 4, the diffusion chamber 1 below it.
4, where it is agitated by an agitator 15, is fed out of a feed hole 19, falls on the upper surface of a rotating disk-shaped spray plate 20, and spreads the spray blades 2 on the spray plate 20.
1 to be sprayed.

A fertilizer spreader of the type shown in FIGS. 3 and 4 is called a broadcaster and has a funnel-shaped fertilizer tank 3 formed on a top surface of a supporting machine frame 1.
And the agitator shaft 3 raised from the gear box 29 mounted on the lower part of the supporting machine frame 1 at the bottom of the bore of the shaft.
The upper end of the fertilizer tank 3 is fitted with the agitator 15 so as to rotate at the bottom of the fertilizer tank 3, and the agitator shaft 30 is attached to the bottom plate of the fertilizer tank 3.
Are formed in a pair of left and right symmetrically with respect to the axis of symmetry, and slidable shutters 10 are provided on the lower surfaces thereof to provide a pair of arcuate discharge holes 19a.
· Disc-shaped scatter plates 20 and 20 rotated by separate right scatter plate shafts 31a and left scatter plate shafts 31b below each of 19a.
Are disposed so as to be symmetrically paired on the left and right sides, and the spreading blades 21 are attached to the upper surfaces of the spreading plates 20 and 20, respectively, and the right spreading plate shaft 31a and the left spreading plate shaft 31b are arranged as shown in FIG. As shown by the bold arrow, it is configured to be driven to rotate oppositely.

[0006] Thereby, the fertilizer which is fed from the pair of feed holes 19a of the bottom plate of the fertilizer tank 3,
The spray blades 21 fall on the upper surfaces of the pair of spray plates 20
21 so that the particles are sprayed at the spray angles indicated by θ1 and θ2 in FIG.

[0007]

A conventional fertilizer spreader is:
In the fertilizer disperser shown in FIGS. 1 and 2 for mixing and dispersing fertilizers and the like, the fertilizer 5 mixed in the fertilizer mixing chamber 4 is spread by a diffusion wing 7 fixed to the tip of a stirring device 6. ,
The drive shaft 26 of the stirring device 6 is attached to the bottom plate 2a of the fertilizer hopper 2.
Is conveyed to a dispensing outlet 9 which is deviated to one side, and falls into a diffusion chamber 14 therebelow, where it is diffused by a rotating agitator 15 and the bottom plate 1 of the diffusion chamber 14
6 through the feeding hole 19 opened in the disc 6
Fall on zero.

The scatter plate 20 receives motive power from a tractor or a general-purpose power source from an input shaft 24 via a power transmission mechanism in a gear case 25 via a power transmission shaft 27, and a scatter plate 2.
By transmitting the power to the agitator shaft 30 via a power transmission mechanism in the gear case 28 for driving the agitator, the agitator shaft 3
0, the falling fertilizer is applied to the centrifugal force of the spray plate 20 and the spray blades 2 fixed on the upper surface of the spray plate 20.
Due to the rotation reaction force of 1, spraying is performed at a spraying angle such as θ1 in plan view of FIG.

However, in the fertilizer 5 having the same properties with the same specific gravity and the same particle size, the spray angle θ1 is
It is determined by the size and shape of the feeding hole 19, the opening position on the bottom plate 16, the diameter of the spray plate 20, the number of rotations thereof, the size and shape of the spray blades 21, the fixed position to the spray plate 20, and the number thereof. When the number of spraying plates 20 is one as in the configuration of FIG. 1, the spreading angle is not greater than θ1. In the spraying operation, the distribution of the amount of fertilizer 5 sprayed is measured.
The maximum amount of spraying is shown near the center of spraying as shown in FIG.

[0010] The spraying width e is determined by the spraying angle θ1 and the ground height of the spraying plate 20 in a mixed sprayer having the same configuration, and even if a spraying width larger than this is required, it cannot be easily handled. There is a problem.

In the latter, the fertilizer spreader having the configuration shown in FIGS. 3 and 4 is a plan view 4 in which a pair of right and left spray plates 20 are arranged at equal distances d from the body center line c.・ Distribution angle θ by disposing 20
And the spreading width e can be increased. However, the dispensing outlets 19a provided in the bottom plate of the fertilizer tank 3 narrowed to a small diameter are provided close to each other. The fertilizer is fed to the peripheral portions on the opposing sides of the spreading plates 20 and 20 which are disposed in a pair opposite to each other below, and the spreading angle of the fertilizer by them is as shown in FIG. There is a problem that it does not spread so much, and there is a problem that it does not have a fertilizer mixing function.

1 and 2 having a function of mixing fertilizer is combined with a means using a pair of spray plates 20 in the fertilizer spreader shown in FIGS. 3 and 4. The fertilizer spreader shown in FIGS. 1 and 2 having the function of mixing the fertilizer is provided with a small-diameter cylindrical wall 13 below the feeding outlet 9 provided on the bottom surface of the fertilizer hopper 2. Since the fertilizer is fed out to the upper surface of the spreading plate 20 from the feeding hole 19 provided in the bottom plate 16 of the spreading room 14 by connecting the diffusion room 14 made of
Even if a pair of 20 is provided, there remains a problem that the spraying angle cannot be widened much like the fertilizer spreader of FIGS.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem that has occurred in the conventional fertilizer spreader, and has a configuration in which a fertilizer spreader having a function of mixing fertilizer is modified. It is another object of the present invention to provide a new means for incorporating a pair of scatter plates without increasing the scatter angle.

[0014]

According to the present invention, as a means for achieving the above-mentioned object, a fertilizer hopper 2 formed in a cylindrical or polygonal cylindrical shape with the axial direction up and down is provided. A stirrer 6 rotating around the axis of the fertilizer hopper 2 is mounted on the periphery of the bottom plate 2a of the fertilizer hopper 2, and a downwardly extending outlet 9 is opened. A diffusion chamber 14 formed by a wall 13 and a bottom plate 16 closing the lower surface thereof,
An agitator 15 which is rotated by an agitator shaft 30 is provided in the diffusion chamber 14, and a pair of feed holes 19 a and 19 a are opened in a bottom plate 16 of the diffusion chamber 14 so as to face a pair of left and right sides.
Below the diffusion chamber 14, a pair of dispersing plates 20 on which the dispersing blades 21 are provided on the upper surface side are supported on a pair of left and right sides so as to oppose each other, and a pair of feeding holes 19a, 19 for opening the bottom plate 16.
A fertilizer characterized by being provided on the lower surface side of a with feed chute 22 for guiding the fertilizer flowing down through the feed holes 19a toward the substantially central portion of the spray plates 20/20. It is to raise a spreader.

[0015]

In the fertilizer spreader according to the present invention configured as described above, a plurality of types of fertilizers 5 introduced into the fertilizer mixing chamber 4 are provided.
Is sufficiently stirred and mixed by the stirrer 6 driven by the power transmitted from the input shaft 24 through the transmission mechanism in the gear case 25 and the drive shaft 26 for the stirrer 6, and then, by the sliding operation of the shutter 10. It is conveyed by the stirring blade 7 of the stirrer 6 to the outlet 9 opened to a predetermined opening degree, falls from the outlet 9 into the diffusion chamber 14, and is diffusion-controlled by the agitator 15 rotating in the diffusion chamber 14. Then, it falls from the pair of left and right supply holes 19a at the peripheral portion of the bottom plate 16 of the diffusion chamber 14.

The fertilizers 5 falling from the feed holes 19a are spread downwardly by a pair of spreading plates 20 and 2 arranged on the left and right.
The sprayer is guided in contact with the upper surface of the chute 22 inclined at an arbitrary angle θ3 toward the center of 0, and is rotated by the right spray plate shaft 31a and the left spray plate shaft 31b in the direction of the bold line in FIG. It falls on the base end part of the spraying blades 21 on the upper surface of the plates 20.

The fertilizer 5 which has continuously fallen on the upper surfaces of the spray plates 20 has a falling position closer to the central portion of the spread plates 20 and 20. The momentum given when the blades 21 are swung by the rotational reaction force of the blades 21 is large, and the blades 21 are scattered with a scatter angle of θ4 in FIG.

In the comparative spraying, the spraying angle of the mixed fertilizer 5 having the same specific gravity, the same particle diameter and the same property is θ1 in FIG. 2 if the machine parts constituting the spraying section are under the same conditions.
The spraying angle θ4 is determined as follows: The spraying angle of the fertilizer 5 sprayed from the left and right spraying plates 20 as shown in FIG.
Therefore, the overall scatter angle θ4 in this configuration is
The overlap angle θ2 is subtracted from the double angle of θ1.

Therefore, by selecting the positions of the feed holes 19a and 19a formed in the bottom plate 16 and the shapes and angles of the feed chutes 22 and 22 so that the overlapping angle θ2 at the time of spraying is adequate and sufficient, the mixing is achieved. The distribution at the time of spraying of the spread fertilizer 5 will be improved as shown in FIG. 6 and FIG. 7, and if the spreading height of the spreading plates 20, 20 at the time of spraying is the same even in the spreading width, 1 and 2, the spread width f or the spread width g in FIGS. 6 and 7 than the spread width e in FIG. 5 by the fertilizer spreader.
Can be expanded and improved as follows.

[0020]

Next, an embodiment will be described in detail with reference to the drawings. In the drawings, the same reference numerals are used for components having the same effects as those of the conventional means.

FIG. 8 is a longitudinal sectional front view of the fertilizer spreader embodying the present invention, and FIG. 9 is a cross-sectional plan view of a main part of the fertilizer spreader.
In the figure, 1 is a supporting machine frame, 2 is a fertilizer hopper formed in a shape having a circular or polygonal cross section with the axial direction being the vertical direction, and 4 is a fertilizer formed by the inner wall surface of the fertilizer hopper 2 and the bottom plate 2a. A mixing chamber 6 is a stirring device provided in the fertilizer mixing chamber 4 so as to be rotated by a drive shaft 26, and 7 is a stirring blade provided at a tip end of a plurality of arms extending from a rotation center of the stirring device 6 to an outer peripheral direction. , 8 is the drive shaft 2 of the stirring device 6
A support column erected at the axial center of the fertilizer hopper 2 surrounding the fertilizer hopper 5, a fertilizer thrown into the fertilizer hopper 3, and a feeding outlet 9 opened at the periphery of the bottom plate 2 a of the fertilizer hopper 2. .

As shown in FIG. 9, the feed outlet 9 is formed in the bottom plate 2a of the fertilizer hopper 2 at a position spaced from the center of rotation of the stirring device 6 in the direction of the peripheral wall of the fertilizer hopper 2 by a predetermined distance a.

Reference numeral 10 denotes a shutter for adjusting the opening and closing of the opening 9 of the feeding port 9. The shutter 10 is slidably guided by the lower surface of the bottom plate 2a of the fertilizer hopper 2 and the shutter guide 12 thereunder in the direction of the double-line arrow in FIG. Then, the outlet 9 is opened and closed.

Reference numeral 14 denotes a diffusion chamber provided below the outlet 9 and formed by a cylindrical wall 13 and a bottom plate 16 formed in a small-diameter cylindrical shape.

Reference numeral 15 denotes an agitator provided in the diffusion chamber 14, and a gear box 2 supported on the bottom of the supporting machine frame 1.
At the upper end of the agitator shaft 30 raised from 9, it is detachably fitted and fixed by a lock pin 32 which can be inserted and removed. 19a is a bottom plate 1 of the diffusion chamber 14.
6 are formed in the same shape and size at the symmetrical positions of the right and left center lines c of the fuselage.

Reference numeral 20 denotes a pair of outlets 19a.
The disk-shaped scatter plates disposed below each of the scatter plates 19a are mounted on the right scatter plate shaft 31a and the left scatter plate shaft 31b, respectively, and are equidistant from the fuselage center line c as shown in FIG. They are arranged at symmetric positions with the same distance a with respect to the drive shaft 26 of the stirring device 6 with d · d, and their rotational directions are symmetrical as indicated by arrows in FIG.
Each of the pair of scatter plates 20 is located at the same distance b downward from the bottom plate 16 of the diffusion chamber 14 (FIG. 8). .. 21 are the spraying plates 20
On the upper surface of each of the scatter plates 20, 20 are arranged and fixed a plurality of sheets with the respective axis centers of the right scatter plate shaft 31a and the left scatter plate shaft 31b as rotational symmetry points.

Reference numeral 22 denotes a bottom plate 16 of the diffusion chamber 14.
Holes 19a and 19 opened symmetrically on the left and right
A feeding chute that guides and guides the fertilizer 5 falling from a,
The fertilizer 5 falling from the feed holes 19a, 19a is placed on the lower surface side of the bottom plate 16 below the feed holes 19a, 19a at substantially the center of the upper surface of the left and right spray plates 20, 20. Arbitrary inclination angle θ3 to guide toward the part
It is bent.

An input shaft 24 receives power from a tractor and a general-purpose power source. The received power is transmitted to a drive shaft 26 and a power transmission shaft 27 of the stirring device 6 via a transmission mechanism in a reduction gear case 25. From the transmission shaft 27 via a transmission mechanism in the gear case 29 for driving the spray plate, the agitator shaft 30, the right spread plate shaft 31a and the left spread plate shaft 31b.
Respectively.

Reference numeral 33 denotes a scattering prevention plate, which is fixedly mounted on the supporting machine frame 1 so as to cross the machine body left and right between the scattering plates 20 and the drive shaft 26 of the stirring device 6 arranged in a pair on the left and right. It is.

Reference numeral 34 denotes a bottom plate 1 installed in the diffusion chamber 14.
6 and detent projections of the delivery chute 22 are shown.

Next, FIG. 12 is a longitudinal sectional front view of a main part of the fertilizer spreader shown in FIGS. 8 to 11 with the feeding chute 22 removed therefrom, and FIG. 13 is a plan view thereof. Is shown.

In this state, the fertilizer 5 falling into the diffusion chamber 14 is diffused and metered by the rotation of the agitator 15 mounted on the agitator shaft 30, and the bottom plate 16
Spraying plate 2 rotating directly through the left and right feeding holes 19a
It falls on 0.

At this time, since the falling fertilizer falls on the upper surface of the left and right spraying plates 20 and 20 in a position close to the outer peripheral portion of the spraying blades 21 and 21 provided on the upper surface of the left and right spraying plates 20 and 20 due to the body configuration dimensions. The time required for the fertilizer 5 to fall from the dropping position on the spreading plate 20 from the spreading plate 20 is shortened. As a result, the spreading angle θ5 of the fertilizer 5 becomes the spreading angle θ4 when the feeding chute 22 is provided. It becomes narrower and the spray width becomes narrower. Therefore, by attaching and detaching the delivery chute 22,
The spreading angle and the spreading width are adjusted to be enlarged or reduced.

On the other hand, in a fertilizer spreader having a mixing function of fertilizers and the like, the mixing function requires a small amount of spraying such as a chemical fertilizer, and a large amount of organic fertilizers such as compost. Spraying may be required. This can be dealt with by replacing the bottom plate 16 of the diffusion chamber 14 in the fertilizer spreader shown in FIGS. 8 to 10 with a bottom plate 17 for large-volume spraying shown in FIG. FIG. 15 is a plan view thereof, and large-diameter delivery holes 19b, 19b are provided in the large-volume dispersing bottom plate 17 at symmetric positions with respect to the body center line c.

When the bottom plate 16 of the diffusion chamber 14 is replaced with the bottom plate 17 having the large-diameter holes 19b, as shown in FIGS.
2 is removed, the fertilizer 5 sent to the diffusion chamber 14 becomes
Diffusion metering by the rotating agitator 15, large-diameter left and right supply holes 19 b · opened in the bottom plate 17 for large-volume spraying.
19b, it falls on the left and right spraying plates 20, but in order to increase the amount of fertilizer 5 to be sprayed, the feeding holes 19b and 19
b needs to be opened to the position close to the agitator shaft 30 on both the left and right. Due to the positional relationship of the components, the fertilizer 5 that falls through the positions of the feed holes 19b and 19b close to the agitator shaft 30 is: It does not fall on the scatter plates 20 and falls through the outer surface of the gear case 29 for driving the scatter plate to the scattered field. Therefore, the falling row h of the applied fertilizer in FIGS. 14 and 15 occurs, and the distribution of the amount of the fertilizer 5 applied in the row h is partially high, which is not preferable.

At this time, the fertilizer 5 falling from the large-diameter feed holes 19b, 19b is placed on the lower surface side of the exchanged large-volume spraying bottom plate 17 at an appropriate position on the left and right spraying plates 20, 20. In the case where the delivery chutes 23 that can be guided to the outside are arranged as shown in FIGS. 16 and 17, the fertilizer 5 that falls through a portion near the agitator shaft 30 of the left and right delivery holes 19 b and 19 b formed with a large diameter. Also, in FIG. 14 and FIG. 15, since they are guided in contact with the feeding chutes 23 and fall right and left to an appropriate position close to the axial center portions of the upper surfaces of the pair of scatter plates 20 and 20 while rotating, The drop row h of the fertilizer 5 shown does not occur, and a desired distribution of the applied amount can be obtained.

From this, as shown in FIG.
On the inner wall surface of the cylindrical wall 13 surrounding the stirring chamber 14, a shelf portion 130 on which the peripheral portion of the bottom plate 16 is mounted is provided, and fitted into a notch portion 160 provided on the peripheral edge of the bottom plate 16 supported thereon. The bottom plate 16 is provided with a detent projection 34 for preventing rotation of the bottom plate 16 so that the bottom plate 16 can be inserted into and detached from the cylindrical wall 13 and the diameter of the feeding holes 19b is large. 17 is formed separately, and the bottom plate 17 is
To be mounted in a compatible manner.

On the lower surface of the bottom plate 16, a substantially strip-shaped seat plate 22a is formed separately, which is engaged with a shelf 130 provided on the inner surface of the cylindrical wall 13. It is supported, and the above-described detent projection 3 is provided on the peripheral portion of the seat plate 22a.
4 to form a notch 220, and left and right side edges,
A feeding chute which guides the fertilizer flowing down from the feeding holes 19a, 19a toward the center of the spreading plates 20, 20, as shown in FIG. 10, at a portion where the feeding holes 19a, 19a formed in the bottom plate 16 overlap. 22 are formed to be bent from the seat plate 22a, respectively.

The large-diameter feed hole 19b
A seat plate 23a to be disposed on the lower surface side of another bottom plate 17 provided with 19b is separately formed, and a notch portion 230 that fits with the above-described rotation preventing projection 34 is formed on a peripheral portion thereof,
The fertilizer that flows through the large-diameter feed holes 19b and 19b formed in the bottom plate 17 and falls on the left and right side edges is applied to the spray plate 2
Feeding chutes 23, 23 are provided to guide toward the central portion of each of the upper surfaces 0 and 20 as shown in FIG. 16, so that they are opened when replacing the bottom plate 16 with the bottom plate 17. Feed holes 19a and 19a and feed holes 19
The delivery chutes 22 and 22 and the delivery chutes 23 and 23 for guiding the fertilizer flowing from the b and 19b can be exchanged together.

In order to easily exchange the bottom plate 16 with the bottom plate 17 in a state where they are combined with the delivery chutes 22 and the delivery chutes 23, 23, diffusion is performed. The agitator 15 disposed in the chamber 14 is removably fitted to the upper end of the agitator shaft 30, and in the fitted state, the knock pin 32 is skewered between the boss of the agitator 15 and the agitator shaft 30. If the knocking pin 32 is removed and the agitator 15 is removed, the bottom plate 16 and the bottom plate 17 in a state where the delivery chutes 22 and 22 and the delivery chutes 23 and 23 are combined are held. The exchange can be performed via the outlet 9 provided in the bottom plate 2a of the fertilizer hopper 2.

Next, FIGS. 19 and 20 show another embodiment. In this example, between the bottom plate 16 and the delivery chute 22 in the up-down direction, a left split shutter 35 for controlling the opening of a delivery port 19a provided on the left half of the bottom plate 16 and a right half of the bottom plate 16 are provided. This is an example in which a right split shutter 36 for controlling the opening of the feeding port 19a is provided so as to operate independently. Left and right split shutter 35
And 36 are each formed in a substantially sector shape as shown in FIG.
The fulcrum pins 38, 38 provided on the
Is pivotally supported about the center of rotation.

The left and right divided shutters 35 and 36
The open / close rods 37/37, which can be operated independently, are connected to the outer end side beyond the fulcrum pins 38/38, and these open / close rods 37/37 are operated in the directions of arrows in FIG. By doing so, the left divided shutter 35 and the right divided shutter 36 rotate around the fulcrum pins 38, 38, respectively.

For this reason, when the left split shutter 35 and the right split shutter 36 are simultaneously opened by the same opening as shown in FIG. 20, the fertilizer 5 is sprayed with the spray angle of θ7 in the figure, Until the feeding hole 19a of only the right split shutter 36 is closed, the position j is shifted from the position i in the figure to the position j.
, The spray angle of the fertilizer 5 is the spray angle of θ8 sprayed only by the left spray plate 20. This makes it possible to spray only the left side of the fuselage center line c. The same applies to spraying only in one right side direction. As described above, the present configuration has a configuration in which the left and right sides can be sprayed only while the left and right surfaces can be sprayed.

[0044]

As described above, according to the present invention, the agitator 6 is provided inside and the inner cavity of the agitator 6 is mixed with the fertilizer mixing chamber 4.
In the peripheral part of the bottom plate 2a of the fertilizer hopper 6 formed in the above, a downwardly extending feeding port 19 is opened, and a small-diameter drum-shaped member comprising a cylindrical wall 13 and a bottom plate 16 closing the lower surface side thereof is provided below the outlet. The diffusion chamber 14 is provided in connection with the diffusion chamber 14.
Fertilizer 5 fed from a feed hole 19 opened in the bottom plate 16
Using a fertilizer spreader in a form in which the fertilizer is sprayed by a disk-shaped spray plate 20 disposed below the diffusion chamber 14, and connected to the lower surface of the bottom plate 2 a of the fertilizer hopper 2. Discharge holes 19a, 19a are opened in the bottom plate 16 in a pair on the left and right sides, and below the diffusion chamber 14, disk-shaped scatter plates 20 having scatter blades 21 on the upper surface side are provided. , A pair of feed holes 19a and 1 which are pivotally supported on a pair of left and right sides and opened in the bottom plate 16 of the diffusion chamber 14.
On the lower surface side of 9a, feeding chutes 22 and 22 for guiding the fertilizer flowing through the feeding holes 19a and 19a and falling toward the substantially central portion of the pair of scatter plates 20 and 20 are provided. Agitator 6 in fertilizer hopper 2
The fertilizer 5 mixed by is passed through the diffusion chamber 14 having a small diameter,
A pair of feeding holes 19a, 19a opened in the bottom plate 16 of the same.
Are spread over the bottom of the machine frame 1 and fall on the upper surface of the spreading plates 20/20, which are mounted on a pair of left and right shafts.
Since you will be guided to be brought to the center part of 0,
The scatter angle of the pair of scatter plates 20 is increased, so that the scatter width can be increased.

When the feeding chutes 22 provided on the lower surface side of the bottom plate 16 of the diffusion chamber 14 are made detachable, a pair of feeding holes provided in the bottom plate 16 are formed by mounting / dismounting the feeding chutes 22. Flowing through 19a, 19a
Fertilizer falling on the upper surface of the pair of spraying plates 20
By switching between a state of dropping to the peripheral portion of the upper surface of the spraying plates 20 and a state of dropping to a portion near the center, the spraying angle and the spraying width can be adjusted to be large and small.

When the bottom plate 16 of the diffusion chamber 14 and the delivery chutes 22 provided on the lower surface thereof are made interchangeable with another bottom plate 17 and the delivery chutes 23, a small amount of spraying is performed by exchanging them. In addition, it becomes possible to select a large amount of spraying while spreading the spray angle and the spray width.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view of a main part of a conventional fertilizer spreader having a fertilizer mixing chamber.

FIG. 2 is a cross-sectional plan view of a main part of the fertilizer spreader.

FIG. 3 is a longitudinal sectional side view of a main part of a conventional fertilizer spreader having no fertilizer mixing chamber.

FIG. 4 is a cross-sectional plan view of a main part of the fertilizer spreader.

FIG. 5 is a table showing a spray amount and a spray width by a conventional fertilizer sprayer.

FIG. 6 is a chart showing an improved distribution rate of the applied amount by the fertilizer application machine embodying the present invention.

FIG. 7 is a table showing another distribution state of the improved application rate by the fertilizer application machine embodying the present invention.

FIG. 8 is a vertical sectional side view of a main part of the fertilizer spreader embodying the present invention.

FIG. 9 is a cross-sectional plan view of a main part of the fertilizer spreader.

FIG. 10 is an enlarged longitudinal sectional front view of a main part of the fertilizer spreader.

FIG. 11 is an enlarged cross-sectional plan view of a main part of the fertilizer spreader.

FIG. 12 is a longitudinal sectional front view of the fertilizer spreader in a state where a feeding chute of a main part is removed.

Fig. 13 is a cross-sectional plan view of a main part of the fertilizer spreader in the same state as above.

FIG. 14 is a longitudinal sectional front view of a main part of the fertilizer spreader in a state where a bottom plate is replaced with a bottom plate having a large-diameter feeding hole.

FIG. 15 is a cross-sectional plan view of a main part of the fertilizer spreader in the same state as above.

FIG. 16 is a longitudinal sectional front view of a main part of the fertilizer spreader in a state where a feeding chute is combined.

FIG. 17 is a cross-sectional plan view of a main part of the fertilizer spreader in the same state as above.

FIG. 18 is an exploded perspective view of a main part of the fertilizer spreader.

FIG. 19 is a longitudinal sectional front view of a main part of another embodiment of the fertilizer spreader.

FIG. 20 is a cross-sectional plan view of a main part of the fertilizer spreader of the embodiment.

[Explanation of symbols]

a, b: distance, c: fuselage center line, d: equidistant distance, e
f · g: Spreading width, h: Row, ij: Position, 1: Supporting machine frame, 10: Shutter, 12: Shutter guide, 13
... Cylinder wall, 130 ... Shelf, 14 ... Diffusion chamber, 15 ... Agitator, 16/17 ... Bottom plate, 160 ... Notch, 19 / 19a
・ 19b ・ ・ ・ Feed hole, 2 ・ ・ ・ Fertilizer hopper, 2a ・ ・ ・ Bottom plate, 2
0: spraying plate, 21: spraying blade, 22/23: feeding chute, 22a / 23a: seat plate, 220/230: notch,
24: input shaft, 25: gear case, 26: drive shaft, 27
... Power transmission shaft, 28/29 ... Gear box, 3 ... Fertilizer tank, 30 ... Agitator shaft, 31a ... Right spray plate shaft, 31
b: left spray plate shaft, 32: lock pin, 33: anti-scattering plate, 34: detent projection, 35: left split shutter, 36
... right split shutter, 37 ... opening and closing rod, 38 ... fulcrum pin, 4 ... fertilizer mixing chamber, 4a ... floor plate, 5 ... fertilizer, 6 ... stirring device, 7 ... diffusion blade, 8 ... prop, 9 ... feeding outlet.

Claims (2)

[Claims] A fertilizer hopper 2 having a cylindrical shape or a polygonal cylindrical shape with an axial direction up and down is mounted with a stirring device 6 which rotates about an axial center of the fertilizer hopper 2. In the peripheral part of the bottom plate 2a, a discharge port 9 which falls down
And a diffusion chamber 14 formed by a small-diameter drum-shaped cylindrical wall 13 and a bottom plate 16 closing the lower surface of the cylindrical wall 13 is provided below the diffusion chamber 14, and an agitator shaft 30 is provided in the diffusion chamber 14. A rotating agitator 15 is provided, and a pair of feed holes 19a, 19a are opened in the bottom plate 16 of the diffusion chamber 14 so as to face a pair of left and right sides. Spreading blades 21 are provided below the diffusion chamber 14 on the upper surface side. A pair of dispersing plates 20 and 20 are supported on the left and right sides in a pair so as to oppose each other.
a. The fertilizer that flows through the a.
Feeding chute 22.2 for guiding toward the approximate center of 20
2. A fertilizer spreader characterized by the installation of No. 2. An agitator 15 disposed in the diffusion chamber 14.
Are attached to the agitator shaft 30 so as to be detachable, and the feeding chutes 22 provided on the bottom plate 16 of the diffusion chamber 14 and the lower surface thereof are independently attached to and detached from the cylindrical wall 13 of the diffusion chamber 14, respectively. 2. The fertilizer spreader according to claim 1, wherein replacement can be performed.