JPH1175452A - Fertilizer spraying machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the spraying in which the center line of the distribution of the sprayed fertilizer coincides with the center line of the machine of the sprayer and the fertilizer which is delivered from delivery holes formed on the bottom board of a diffusing section drops onto specific positions against the upper surface of the spray board without scattering, and at the same time to prevent an ill effect on the spray accuracy even in the case of a small-amount spraying of a granular fertilizer. SOLUTION: In this fertilizer spraying machine, a delivery hole A is formed on the bottom board of a diffusing section and the other delivery hole B is opened on the bottom board at a position apart from the hole A by a specific angle β in the reverse direction of the rotation direction (g) of an agitator rotating in the diffusing section. These delivery holes A and B are closed with separate shatter boards 42, 42', respectively in such a manner that the opening degree control and the closing-and-opening control can be performed independently, and a spraying board 26 which has a spray blade 27 on the upper side and can make rotation is placed below the delivery holes A and B.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fertilizer spreader for spraying a granular fertilizer and an organic fertilizer on a field. More specifically, in the fertilizer spreader, in the bore of the cylindrical or polygonal cylindrical fertilizer hopper supported on the body frame,
Equipped with a stirring device that is rotated by a rotating shaft disposed in the shaft portion, the inner cavity of the fertilizer hopper is formed in a fertilizer mixing chamber,
At the bottom of the fertilizer mixing chamber, at a position radially away from the rotation axis of the stirrer at a predetermined distance, a small-diameter discharge port is opened from the fertilizer hopper, and the discharge port has a diameter corresponding to the discharge port. A cylindrical diffusion chamber is connected so as to protrude downward from the bottom plate of the fertilizer hopper, and an agitator rotating in the diffusion chamber passes through a feed hole provided in the bottom plate of the diffusion chamber to form a granular material in a spraying chamber below the diffusion chamber. The present invention relates to an improvement in a fertilizer spreader of a form in which chemical fertilizer is fed out and sprayed from a spray opening opened on an outer surface of a body frame by a rotating spray plate provided in a spray chamber.

[0002]

2. Description of the Related Art As shown in FIGS. 1 and 2, a fertilizer spreader W of the above-described embodiment usually has a body frame 1 in which a bottomed fertilizer hopper 2 having a cylindrical peripheral wall is formed in a box shape.
To the top of

[0003] A rotary shaft 30 that rises from the body frame 1 is disposed at a shaft center portion in the fertilizer hopper 2, and is driven via a transmission unit 31 provided in the body frame 1,
An arm 32 projecting radially and bending downward is connected to the upper end of the rotating shaft 30, and a stirring blade 33 is attached to the lower end of the arm 32.
Is provided in the fertilizer hopper 2, whereby the stirring device 3 in which the stirring blade 33 rotates around the rotation shaft 30 at the center is provided.
Thereby, the inside of the fertilizer hopper 2 is formed in the fertilizer mixing chamber a.

The bottom plate 20 of the fertilizer hopper 2, which is the bottom of the fertilizer mixing chamber a, is located at a position radially away from the rotating shaft 30 of the stirring device 3 by a predetermined distance d1, and has a diameter much smaller than that of the fertilizer hopper 2. A dispensing port 21 is opened, and here, a diffusion chamber b formed by a cylindrical body 22 having a diameter corresponding to the dispensing port 21 and a bottom plate 23 provided at the bottom thereof is placed below the bottom plate 20 of the fertilizer hopper 2. And a feed hole A is opened in the bottom plate 23 of the base plate 23. In the diffusion chamber b, an agitator 25 which is rotated by a drive shaft 24 disposed at the axial center thereof is provided.

On the lower surface of the bottom plate 23 of the diffusion chamber b, a rod 4
0, the above-mentioned feeding hole A is centered on the fulcrum shaft 41.
Is provided with a shutter plate 42 that slides and rotates on the lower surface side of the shutter and adjusts the degree of opening of the feeding hole A.

Below the diffusion chamber b, there is formed a spray chamber c in which a spray port y is opened toward the front of the fuselage frame 1. The spray chamber c is attached to the lower end of the drive shaft 24 of the agitator 25. A rotating disk-shaped scatter plate 26 is disposed below the diffusion chamber b, and a large number of scatter blades 27 are radially mounted on the upper surface of the scatter plate 26 in plan view.

Further, on the outer peripheral side of the spray plate 26, the spray plate 26
An arc-shaped scattering prevention cover 28 centering on the drive shaft 24 of the agitator 25 in plan view is arranged between the rotating shaft 30 of the stirring device 3 and the support for supporting the lower end of the cylindrical body 22. It is vertically installed on the lower surface side of the machine frame 10. These are used to constitute a granular fertilizer spreader W.

[0008]

The fertilizer spreader of the above-mentioned form has been developed for the purpose of spraying granular fertilizer (chemical fertilizer), and is designed and made to be suitable for spraying of granular fertilizer. However, in recent years, from the viewpoint of reduction of organic matter to the field, not only granular fertilizers, but also organic fertilizers, that is, it has come to be used for spreading compost,
Even when compost is sprayed as a fertilizer, good sprayability and spraying accuracy are required.

When the fertilizer sprayer W of this embodiment sprays the granular fertilizer M1, as shown in FIG. 3, the fertilizer sprayer W is rotated by the rotation of the agitator 25 fixed to the upper end of the rotating shaft 24 of the agitator 25. The fertilizer M1 drops from the inside of the diffusion chamber b onto the spray plate 26 via the feeding hole A formed in the bottom plate 23 and the opening A 'of the feeding hole formed by the edge of the shutter plate 42, and rotates. Due to the centrifugal force of the middle scatter plate 26 and the scatter blades 27 fixed to the upper surface thereof, the scatter plate 26 diffuses at a constant throwing angle θ ₁ with respect to the rotation circumference of the scatter plate 26 and is scattered. At this time, the distribution center line fa of the granular fertilizer M1 to be sprayed is made to coincide with the body center line e of the sprayer W because of the feeding hole A for the spray plate 26.
And the setting of the maximum opening angle α.

However, when the compost M2 is sprayed through the dispensing hole A set such that the distribution center line fa of the granular fertilizer M1 coincides with the body center line e, the compost M2 becomes in the granular fertilizer M1.
Because it contains a lot of comparison water and fiber to 1, they tend to adhere to the distribution plate 26 and scatter blade 27, as shown in FIG. 4 as a result, throwing angle theta ₂ of the compost M2 is granular fertilizer to M1 throwing angle theta ₁ of becomes a spray which Mochimawa' the rotational direction g side of distribution plate 26, the distribution center line fb and fuselage center line e of manure spreaders scatter compost M2
A difference in the distance d2 occurs between them, and there is a first problem that the spraying operation is difficult. (Issue 1)

Further, compost M2 is compared with granular fertilizer M1,
Since the property is likely to be a mass of soil due to the high content of moisture and fiber, the configuration of the sprayer W also used for spreading compost is adjusted by using the feeding hole A formed in the bottom plate 23 and the shutter plate 4.
2 from the feeding hole opening A 'formed by the
Compost M2 to make the distance d3 between
Is rotating after passing through the feeding hole opening A '.
The falling position with respect to the upper surface of the
Predetermined throwing angle theta ₂ to come out the second problem varies spraying accuracy. (Issue 2)

Further, compost M2 is required to have soil improving effect as an organic fertilizer as compared with granular fertilizer M1, and therefore, generally requires a larger amount of application than granular fertilizer M1.

However, under the condition of using the common feeding hole A for spraying the granular fertilizer M1, the shutter plate 4
Even if 2 is opened to the maximum opening degree, the maximum spraying amount is limited only by the feeding hole A on the bottom plate 23, and when the opening area of the feeding hole A is unnecessarily enlarged in accordance with the spreading of the compost M2, When a small amount of the granular fertilizer M1 is sprayed, the falling position of the granular fertilizer M1 on the spray plate 26 is difficult to determine, which causes a third problem of causing an adverse effect on the spraying accuracy. (Issue 3)

The present invention has been made in order to solve the problems occurring in the granular fertilizer spreader used for the application of the compost as well, when the granular fertilizer (chemical fertilizer) is sprayed, and In any case when organic fertilizer such as compost is sprayed, the distribution center line of the sprayed fertilizer can be aligned with the body center line of the sprayer, and the dispensing hole in the bottom plate of the diffusion chamber The fertilizer that is fed out and falls from the spraying plate at a predetermined position on the upper surface of the spraying plate without scattering, and when a small amount of granular fertilizer is sprayed, adversely affects the spraying accuracy. The purpose is to provide a new means that can be prevented from giving.

[0015]

According to the present invention, as a means for achieving the above-mentioned object, a rotary shaft 30 disposed at an axial center portion is provided in a bore of a cylindrical or polygonal fertilizer hopper 2. Is installed, and the bottom plate 20 of the fertilizer hopper 2 is mounted on the rotating shaft 3 of the stirring device 3.
0, a feeding port 21 is opened at a predetermined distance in the radial direction thereof, and a cylindrical diffusion chamber b is connected thereto so as to protrude downward from the bottom plate 20 of the fertilizer hopper 2;
In the fertilizer spreader in which the dispensing hole A is opened in the bottom plate 23 of the diffusion chamber b and the dispersing plate 26 rotating below is provided, the bottom plate 23 of the diffusion chamber b has Is opened in a position opposite to the rotation direction g of the agitator 25 rotating at a predetermined angle β, and these supply holes A and B are connected to the respective shutter plates 42. The opening degree can be adjusted and the opening / closing control can be independently performed by 42 ', and the spraying plate 26, which is provided with the spraying blades 27 on the upper surface side and rotates, is disposed below them. Raises a fertilizer spreader, and at the same time, in the bore of a cylindrical or polygonal cylindrical fertilizer hopper 2,
Stirring device 3 rotated by rotating shaft 30 arranged at the shaft center
And an opening 21 is formed in the bottom plate 20 of the fertilizer hopper 2 at a position radially away from the rotating shaft 30 of the agitating device 3 at a predetermined distance, and a cylindrical diffusion chamber b is formed therein.
Are connected so as to protrude downward from the bottom plate 20 of the fertilizer hopper 2, a feeding hole A is opened in the bottom plate 23 of the diffusion chamber b, and a spreading plate 26 rotating below the fertilizer spreader is provided. Another dispensing hole B is formed in the bottom plate 23 of the diffusion chamber b at a position separated from the dispensing hole A by a certain angle β in a direction opposite to the rotation direction g of the agitator 25 rotating in the diffusion chamber b. The opening A and the opening B can be independently adjusted by the respective shutter plates 42 and 42 'to control the opening degree and the opening / closing control, and the cylindrical body 22 forming the diffusion chamber b is supported. In a space formed between the lower surface side of the supporting machine frame 10 and the upper end surface of the spray blades 27 on the upper surface of the spray plate 26, in plan view, between the scattering prevention cover 28 and the drive shaft 24 of the agitator 25, Position closer to the center than the outer peripheral edge of the spray plate 26 , A peripheral lower tubular body 22,
The present invention proposes a fertilizer spreader characterized in that an arc-shaped regulating plate z surrounding a range of a constant surrounding angle δ is provided.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION A fertilizer spreader W according to the present invention comprises a fertilizer hopper 2 supported on a body frame 1 and a stirring device 3 rotated by a rotary shaft 30 located at a shaft core inside the hopper 2. The inner cavity of the fertilizer hopper 2 is formed in the fertilizer mixing chamber a, and the rotation shaft 3 of the stirring device 3 of the bottom plate 20 of the fertilizer hopper 2
The fertilizer mixing chamber a
And a diffusion chamber b having a smaller diameter than the fertilizer hopper 2 is continuously formed so as to fall downward, and an agitator 25 is provided therein. A bottom plate 23 of the diffusion chamber b is provided therein. In addition, a feed hole A whose opening is freely adjusted by the shutter plate 42 is opened, and the fertilizer is fed from the feed hole A, and the fertilizer fed therefrom is placed below the feed hole A. Is dropped on the scatter plate 26 disposed in the space formed in the body frame 1 of the above, and is spun by centrifugal force by the rotation of the scatter plate 26, and the sprinkled fertilizer is spread on the outer peripheral side of the scatter plate 26. In a plan view, disposed between the rotation shaft 30 of the agitator 3 and the spray plate 26, the guide is guided by an arc-shaped scattering prevention cover 28 centered on the rotation shaft 24 of the agitator 25, and the front side of the body frame 1 Spray from spraying port y The points comprising as are similar to those of the conventional means.

Thus, in the fertilizer spreader thus constructed, the means of the present invention is applied to the bottom plate 2 of the diffusion chamber b having a diameter smaller than that of the fertilizer hopper 2 connected to the bottom of the fertilizer mixing chamber a.
3, another feeding hole B is provided at a predetermined angle with respect to the feeding hole A in a direction opposite to the rotation direction of the agitator 25 rotating in the diffusion chamber b. β
, A maximum opening angle γ substantially aligned with the maximum opening angle α of the feed hole A about the drive shaft 24 of the agitator 25.
Established as a delivery hole with

As a result, the conventional feeding hole A and another feeding hole B are provided on the bottom plate 23 at the rear half opposite to the front side of the body frame 1 where the spray port y is opened, and the agitator 25 is formed. The drive shaft 24 is positioned substantially symmetrically with respect to the center.

Shutter plates 42 and 42 'for adjusting the degree of opening thereof are provided on the lower surfaces of the feed holes A and B, respectively. 'Allows each to be operated independently.

The space formed between the support frame 10 supporting the cylindrical body 22 forming the diffusion chamber b and the rotation locus of the upper edge of the spraying blades 27... In a range of a predetermined surrounding angle δ centered on the drive shaft 24 of the agitator 25, the spraying is performed in a plan view at an inner position of the scattering prevention cover 28 which is vertically suspended from the supporting machine frame 10 and surrounds a rear portion of the spreading plate 26. A regulating plate z is provided along the outer peripheral end of the plate 26.

[0021]

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. 6 is a vertical sectional side view of the fertilizer spreader W according to the present invention, and FIG.
FIG. 8 is an enlarged plan view of a main part of the fertilizer spreader W, partially broken away, and FIG. 9 is a longitudinal sectional front view of the main part of the fertilizer spreader, partially cut away.

In the drawing, 1 is a body frame, 2 is a fertilizer hopper, 3 is a stirring device, a is a fertilizer mixing chamber, b is a diffusion chamber, 22 is a cylindrical body forming a diffusion chamber b, and 10 is a cylindrical body 2
2, a support frame for supporting 2; 25, an agitator provided in the diffusion chamber b; 23, a bottom plate of the diffusion chamber b; A, a feed hole formed in the bottom plate 23; A shutter plate, 26 is a scatter plate, 27 is a scatter blade provided on the upper surface side of the scatter plate 26, y is a scatter port formed on the front side of the body frame 1, and B is another scatter plate formed on the bottom plate 23 of the diffusion chamber b. A feeding hole, 42 'is a shutter plate for adjusting the opening degree of the feeding hole B, 28 is a scattering prevention cover provided so as to surround a rear portion of the outer periphery of the spray plate 26 opposite to the spray port y, and z is a scattering prevention cover. The regulating plate provided in the space between the upper edge of the spraying blade 27 on the upper surface of the spraying plate 26 and the lower surface of the supporting machine frame 10 of the tubular body 22 is shown inside 28.

The body frame 1 is formed in a box shape, and a spray port y is opened on the front side (the right side in FIG. 6).

The fertilizer hopper 2 is formed in a bottomed cylindrical or polygonal cylindrical shape, is mounted above the body frame 1, and has an agitating device that is rotated by a rotating shaft 30 disposed at a shaft center portion. 3, a bore is formed in the fertilizer mixing chamber a, and a feeding port 21 is opened in the bottom plate 20 of the fertilizer hopper 2 at a position close to the outer peripheral edge. The fertilizer mixing chamber a is filled with a granular fertilizer M1 of chemical fertilizer or a compost M2 which is an organic fertilizer.

A stirring device 3 installed in the fertilizer hopper 2
The rotary shaft 30 is protected by a cylindrical support 30a erected on the bottom plate 20 of the fertilizer hopper 2, and the support 30
The rotation shaft 30 in a is driven by the transmission shaft of the transmission unit 31 provided in the body frame 1 and driven to rotate.

The stirring device 3 is provided with stirring blades 33 at the lower ends of a plurality of arms 32 extending radially from the upper end of the rotating shaft 30 and bending downward. The stirring blades 33 have a rake angle so as to scoop up the fertilizers M1 and M2 accumulated on the upper surface of the bottom plate 20 of the fertilizer hopper 2.

As shown in the plan view of FIG. 7, a feed port 21 formed in the bottom plate 20 of the fertilizer hopper 2 has a predetermined distance d1 from the rotation center of the stirring device 3 toward the outer periphery of the fertilizer hopper 2.
The fertilizer hopper 2 is formed at a position far smaller than the inner diameter of the fertilizer hopper 2.

The diffusion chamber b is provided with the bottom plate 2 of the fertilizer hopper 2.
0, a circular or polygonal cylindrical body 22 having an upper edge connected thereto, and a bottom plate 2 shelved therein.
3 and 3 are formed on the upper surface side of the bottom plate 23, and the inner cavity thereof is provided with an agitator 25 which is rotated by a drive shaft 24 disposed at a shaft center portion.

The bottom plate 23 of the diffusion chamber b is provided with an agitator in a plan view at a portion located on the left and right half of the rear half opposite to the spray port y on the upper surface thereof and located in front of the agitator 25 in the rotation direction. In the rotation direction of 25, a feeding hole A having an angle that becomes a constant maximum opening angle α centered on the rotation axis 30 is formed in the same manner as the conventional means, but separately from this feeding hole A, another feeding hole B is formed. A hole having a certain maximum opening angle γ similar to that of the feeding hole A is provided at a position separated from the feeding hole A by a certain adjacent angle β in a direction opposite to the rotation direction of the agitator 25.

The fulcrum shaft 41 provided on the outer peripheral portion of the cylindrical body 22 is provided on the lower surface side of the feed hole A and the feed hole B.
And a rod 40 rotatably supported by a fulcrum shaft 41 '.
By the operation of 40 ′, the shutter plates 42 and 42 ′ are provided, respectively, which rotate in sliding contact with the lower surface of the bottom plate 23, and the shutter plates 42 and 42 ′ operate independently, and the feeding holes A and The opening degree of the feeding hole B can be arbitrarily adjusted separately for each.

The spray plate 26 is formed in a disk shape and is attached to the lower end of the drive shaft 24 of the agitator 25, and rotates with the drive shaft of the agitator 25 as a rotation axis. On the upper surface of the scatter plate 26, a plurality of scatter blades 27 are radially mounted around the drive shaft 24 of the agitator 25 in plan view.

The scattering prevention cover 28 is formed in an arc shape in plan view so as to surround the side opposite to the spray opening y at a part of the outer periphery of the spray plate 26, and is formed between the spray plate 26 and the rotating shaft 30 of the stirring device 3. And, when viewed from the side, is suspended from the lower surface of the supporting machine frame 10 provided on the machine body frame 1 so as to support the lower end of the tubular body 22 and extends below the spray plate 26 so as to surround the supporting machine frame 10. It is set up.

The regulating plate z is provided between the arc-shaped scatter prevention cover 28 and the drive shaft 24 of the agitator 25. The lower surface of the supporting machine frame 10 supporting the lower end of the cylindrical body 22 and the upper surface of the scatter plate 26. The rotation of the scatter plate 26 from the outer peripheral end of the scatter plate 26 around the drive shaft 24 of the agitator 25 within a certain surrounding angle δ in a space formed between the scatter plate 26 and the upper end surface of the scatter blade 27. At the position close to the center, the supporting machine frame 10
Is fixed at an arbitrary height i within a range that does not interfere with the spray blades 27.

The rods 40 and 40 'are connected to shutter plates 42 and 42', respectively, and are operated in the directions indicated by double arrows in FIG. And can be performed separately.

Next, reference numeral 5 denotes an input shaft for receiving power from a tractor and other general-purpose power sources, and the power is transmitted through a transmission mechanism in a transmission section 31 supported on the body frame 1 to rotate the stirring device 3. The power is transmitted to the shaft 30 and the power transmission shaft 50, and transmitted to the drive shaft 24 of the agitator 25 via a power transmission mechanism in the scatter plate drive gear case 51.

Next, the operation will be described. 6 and 7, the compost M2 put into the fertilizer hopper 2 is fed into the fertilizer mixing chamber a by the stirring device 3 operated by power via the input shaft 5, the transmission unit 31, and the rotating shaft 30 of the stirring device 3. After being sufficiently mixed and stirred in, the mixture is conveyed by the stirring blade 33 through the outlet 21 into the diffusion chamber b formed by the tubular body 22 and the bottom plate 23.

The compost M2 in the diffusion chamber b is
The bottom plate 23 is rotated by the rotation of the agitator 25 by the input power through the sprinkling plate drive gear case 51 and the drive shaft 24;
It is rotated and conveyed above and passes through the feeding holes A and B,
In FIG. 8, it falls on the spreading plate 26 which is rotating in the direction of the arrow g indicated by a double line.

At this time, the compost M2 in the middle of falling is as shown in FIG.
As shown in the side view of FIG. 2, the guide plate is guided by the regulating plate z, and falls without scattering to a predetermined position close to the center portion of the rotation trajectory of the spray blade 27 on the upper surface of the rotating spray plate 26.

Accordingly, as shown in the plan view of FIG. 11, the compost M2 that has passed through the feed holes A and B has an intended drop point on the upper surface of the scatter plate 26 due to the action of restricting the falling flow by the control plate z. , The centrifugal force caused by the rotation of the spray plate 26 and the spray blades 27 provided on the upper surface thereof,
The feeding hole A and the feeding hole B correspond to the drive shaft 24 of the agitator 25.
On the other hand, under the condition that each has the same opening angle ε and the same opening area, the compost M2 is sprayed at the same throwing angle θ ₃ , and the distribution of the spreading amount is shown in the distribution diagram of the spreading amount in FIG. It becomes data like
4, the distribution of the amount of the compost M2 in the known conventional fertilizer spreader is compared with the data of the distribution of the amount of the compost M2 in FIG. 13, so that the distribution center fb can be made to substantially coincide with the body center e. 13 and the spread width kl in FIG. 13 of the known conventional machine can be expanded like the spread width k2 in FIG. 12, and the delivery holes A and B are provided near the distribution center line fb. An overlapping portion j of the spread compost M2 is formed from each, and the data in FIG. 12 can improve the spraying accuracy compared to the data in FIG.

In FIG. 11, when the feeding hole B is completely closed by the operation of the rod 40 'and the shutter plate 42', it becomes the same as that of the conventional means described in FIG. It can be in a state where spraying of M1 can be performed without any problem.

As described above, the method of the present invention comprises the step of
The first problem and the second problem which have occurred in the conventional means can be solved without impairing the spraying performance.

Further, as shown in the plan view of FIG. 11, if the feeding hole A and the feeding hole B are disposed at substantially the same position with the body center line e as the symmetry line and the maximum opening area is equal, the compost M2 in FIG. It is possible to cope with the maximum spraying amount, that is, the spraying amount approximately twice as large as the spraying amount at the time of the maximum opening of the feeding hole A, and the third problem in the conventional means can be solved.

FIG. 14 shows another embodiment. This figure 1
The example shown in FIG. 4 is an embodiment in which the feeding hole A and the feeding hole B are asymmetric with respect to the body center line e of the fertilizer spreader W and have different maximum opening areas.

In this example, a small-diameter diffusion chamber b formed of a cylindrical body 22 is provided continuously at the bottom of a fertilizer hopper 2 in which a stirrer 3 is stored and an inner cavity is formed in a fertilizer mixing chamber a. In the bottom plate 23 at the bottom of the above, a feeding hole A and another another feeding hole B are opened, and their opening degrees can be individually adjusted and opened and closed by respective shutter plates 42 and 42 '. Then, the fertilizers fed from them are dropped to a predetermined position on the spray plate 26 disposed in the spray room c below the spread room b, and sprinkled by the rotation of the spray plate 26 to spray the fertilizer in the front of the body frame 1. Spraying from y is the same as that of the above-described embodiment, and the components having the same effect are denoted by the same reference numerals, and detailed description thereof will be omitted.

In this embodiment, however, the rotation direction of the agitator 25 of the dispensing hole A and the other dispensing hole B formed in the bottom plate 23 of the diffusion chamber b is located rearward of the spray port y. The feeding hole B located is formed in the same manner as the feeding hole B of the above-mentioned embodiment, but the width of the feeding hole A located on the front side is reduced so that the width thereof is reduced in the rotation direction of the agitator 25. It is set up in a long arc-shaped slot.

With this, each operation and control of each of the shutter plates 42 and 42 'allows the use of only the feeding hole A when the granular fertilizer M1 mainly sprayed in a small amount is applied, and the compost M2. This is an embodiment in which only the feeding hole B is used at the time of spraying such an organic fertilizer containing a large amount of water and fiber, so that the feeding holes A and B can be selectively used according to the properties of the sprayed fertilizer. .

Next, FIG. 15 shows still another embodiment.
In this example, the feeding hole A and the feeding hole B are arranged at symmetrical positions as symmetrical lines along the fuselage center line e, and the symmetrical line is set to the fuselage center line e as a reference line. This is an example in which the drive shaft 24 of the agitator 25 is rotated by a predetermined angle θ _{4 in the} opposite direction to the rotation direction g and opened on the bottom plate 23 in this state position. This is an effective example in the case where the main spraying is used as the main spraying object and the spraying is performed with a uniform spreading width on the left and right.

In this embodiment, the remaining structure is the same as that of the above-described embodiment except for the above-described points. Therefore, in the structure, the same reference numerals are given to the same components and the detailed description is omitted. .

[0050]

As described above, in the means of the present invention, the stirring device 3 which is rotated by the rotating shaft 30 disposed at the axis portion is provided in the bore of the fertilizer hopper 2 having a cylindrical or polygonal cylindrical shape. A feeding port 21 is opened in the bottom plate 20 of the fertilizer hopper 2 at a position radially away from the rotating shaft 30 of the stirring device 3 in the stirring device 3, and a cylindrical diffusion chamber b is formed in the feeding port 21. In the fertilizer spreader, which is connected so as to protrude downward from the bottom plate 20 of the fertilizer hopper 2, opens a feed hole A in the bottom plate 23 of the diffusion chamber b, and installs a spray plate 26 rotating below the diffusion chamber b, In the bottom plate 23 of the
The rotation direction g of the agitator 25 rotating in the diffusion chamber b
In the opposite direction, at a position separated by a certain angle β, another feeding hole B is opened, and the feeding hole A and the feeding hole B are
The opening degree can be adjusted and opened / closed independently of each other by the respective shutter plates 42 and 42 ', and the scatter plate 26, which is provided with the scatter blades 27 on its upper surface and rotates, is disposed below them. Because of the configuration, not only the granular chemical fertilizer M1, but also in the application of the compost M2 containing a large amount of moisture and fibrous material, it is possible to apply evenly left and right, and it is possible to improve the application accuracy, and A large amount of compost M2 can be applied.

In the above-mentioned fertilizer spreader, the lower surface side of the supporting machine frame 10 supporting the cylindrical body 22 forming the diffusion chamber b is formed between the upper end surface of the spray blades 27 on the upper surface of the spray plate 26. Cover 2 in a plan view.
8 and the drive shaft 24 of the agitator 25,
An arc-shaped regulating plate z that surrounds the lower part of the peripheral edge of the cylindrical body 22 within a range of a constant enclosing angle δ at a position closer to the center than the outer peripheral edge of
Is disposed, the falling position of the compost M2 from the delivery hole A and the delivery hole B onto the rotating spray plate 26 during rotation is regulated, and the throw angle θ ₃ from the spray plate 26 is set.
Becomes evenly accurate, and the spraying accuracy within the spraying width k2 can be improved.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view of a conventional fertilizer spreader.

FIG. 2 is a plan view of the same, with a part cut away.

FIG. 3 is an enlarged plan view, partially broken away, of a state where the granular fertilizer of the main part is sprayed.

FIG. 4 is a partially broken plan view showing a state in which compost of the main part is sprayed.

FIG. 5 is a vertical sectional side view of a main part of the above.

FIG. 6 is a longitudinal sectional side view of a fertilizer spreader according to the present invention.

FIG. 7 is a partially broken plan view of the same.

FIG. 8 is an enlarged plan view of a main part of the above, partially cut away.

FIG. 9 is a vertical sectional front view of a main part of the above.

FIG. 10 is a longitudinal sectional side view of the essential part of the above, when the organic fertilizer is sprayed.

FIG. 11 is a partially broken plan view of the essential part of the above, when the organic fertilizer is applied.

FIG. 12 is a distribution diagram of the amount of application when compost is applied by the fertilizer application device according to the present invention.

FIG. 13 is a distribution diagram of the amount of application when compost is applied by a conventional fertilizer application device.

FIG. 14 is a partially broken plan view of a main part of another embodiment of the fertilizer spreader according to the present invention.

FIG. 15 is a partially broken plan view of a main part of still another embodiment of the fertilizer spreader according to the present invention.

[Explanation of symbols]

AB: feeding hole, A ': opening of feeding hole, W: fertilizer spreader, M1: granular fertilizer, M2: compost, a: fertilizer mixing room, b
... Diffusion room, c ... Spray room, d ... Distance, e ... Aircraft center line, f
a · fb: distribution center line, g: rotation direction, i: arbitrary height,
j: overlapping portion, k1, k2: spraying width, y: spraying port, z: regulating plate, 1 ... body frame, 10 ... supporting machine frame, 2 ... fertilizer hopper, 20 ... bottom plate, 21 ... feeding outlet, 22 ... cylinder Body, 2
DESCRIPTION OF SYMBOLS 3 ... Bottom plate, 24 ... Drive shaft, 25 ... Agitator, 26 ... Spray plate, 27 ... Spray vane, 28 ... Splash prevention cover, 3 ... Stirring device, 30 ... Rotating shaft, 30a ... Tube column, 31 ... Mission part , 32 ... arm, 33 ... stirring blade, 40.4
0 ': rod, 41/41': fulcrum shaft, 42/42 '...
Shutter plate, 5 ... input shaft, 50 ... power transmission shaft, 51 ...
Spread plate drive gear case.

Claims (2)

[Claims] 1. A fertilizer hopper 2 having a cylindrical or polygonal cylindrical shape.
A stirring device 3 that is rotated by a rotation shaft 30 disposed at a shaft center portion is provided in the inner cavity of the bottom of the fertilizer hopper 2, and a predetermined distance in a radial direction of the bottom plate 20 of the fertilizer hopper 2 from the rotation shaft 30 of the stirring device 3 is set. A feeding outlet 21 is opened at the separated part, and a cylindrical diffusion chamber b is connected to the fertilizer hopper 2 so as to protrude downward from the bottom plate 20 of the fertilizer hopper 2, and a feeding hole A is formed in the bottom plate 23 of the diffusion chamber b. In the fertilizer spreader equipped with the spreader plate 26 which is opened and rotates below the spreader plate 26, the bottom plate 23 of the diffusion chamber b is opposite to the rotation direction g of the agitator 25 rotating in the diffusion chamber b from the feeding hole A. At the position separated by a fixed angle β in the direction, another feeding hole B is opened, and the feeding hole A and the feeding hole B are independently adjusted by the respective shutter plates 42 and 42 ′ to adjust the opening degree. And open / close control is possible, and below them, on the top side Manure spreaders, characterized in that the fabric vanes 27 ... are arranged a distribution plate 26 which rotates the So設. 2. A fertilizer hopper 2 having a cylindrical or polygonal shape.
A stirring device 3 that is rotated by a rotation shaft 30 disposed at a shaft center portion is provided in the inner cavity of the bottom of the fertilizer hopper 2, and a predetermined distance in a radial direction of the bottom plate 20 of the fertilizer hopper 2 from the rotation shaft 30 of the stirring device 3 is set. A feeding outlet 21 is opened at the separated part, and a cylindrical diffusion chamber b is connected to the fertilizer hopper 2 so as to protrude downward from the bottom plate 20 of the fertilizer hopper 2, and a feeding hole A is formed in the bottom plate 23 of the diffusion chamber b. In the fertilizer spreader equipped with the spreader plate 26 which is opened and rotates below the spreader plate 26, the bottom plate 23 of the diffusion chamber b is opposite to the rotation direction g of the agitator 25 rotating in the diffusion chamber b from the feeding hole A. At the position separated by a fixed angle β in the direction, another feeding hole B is opened, and the feeding hole A and the feeding hole B are independently adjusted by the respective shutter plates 42 and 42 ′ to adjust the opening degree. And a tubular body capable of opening / closing control and forming a diffusion chamber b In the space formed between the lower side of the supporting machine frame 10 which supports the 2 and the upper end surface of the distribution plate 26 the upper surface of the spraying blade 27, in plan view, shatterproof cover 2
8 and the drive shaft 24 of the agitator 25,
An arc-shaped regulating plate z that surrounds the lower part of the peripheral edge of the cylindrical body 22 within a range of a constant enclosing angle δ at a position closer to the center than the outer peripheral edge of
A fertilizer spreader characterized by having a disposition.