JPS6225079Y2 - - Google Patents

Description

[Detailed description of the invention] This invention supplies granular fertilizer to a rotary wheel that rotates within a casing, gives kinetic energy by centrifugal force due to the rotation of the rotary wheel, and discharges it from the discharge port of the casing. The present invention relates to an improvement in a fertilizer spreading device as described above.

Since the fertilizer dispersion device of the above-mentioned form applies kinetic energy to the granular fertilizer using a rotary wheel and shakes it out, the flight distance of the granular fertilizer shaken out and discharged is proportional to the applied kinetic energy. Its kinetic energy is proportional to the weight of the granular fertilizer particles. For this reason, when granular fertilizer is supplied to a rotary vane, the impact when it collides with the vane of the rotary vane causes it to be crushed and damaged, and the weight of each particle becomes small, resulting in an extremely short flight distance. As a result, it becomes impossible to spread the granular fertilizer in a predetermined spreading range, so it is desirable to supply the granular fertilizer to the rotary wheel in a manner that prevents the granular fertilizer from being crushed or damaged. However, it is extremely difficult to supply granular fertilizer to a rotary wheel rotating at high speed inside a casing without being subjected to impact, and conventional methods inevitably suffer from crushing and damage, resulting in distance to the spray. It has become impossible to make it bigger.

The present invention was developed to solve this problem, and allows the granular fertilizer supplied to the rotary wheel to be shaken without being crushed or damaged, while retaining the kinetic energy given to each particle. The purpose is to provide new means that can be used to increase the amount of information available.

In the present invention, as a means to achieve this objective, a rotating shaft is disposed at the axial center of the lumen of the casing provided with the discharge port, and the rotating shaft has the following features:
A plurality of cylindrical bodies each having open ends in the axial direction protrude radially from around the imaginary extension of the rotation shaft, and openings on the inner end side of the plurality of cylindrical bodies extend around the imaginary extension of the rotation shaft. A guide for guiding granular fertilizer into a cavity surrounded by an opening on the inner end side of the annularly arranged cylinders of the rotary impeller, which are mounted on an axis and are arranged in parallel in an annular manner so as to surround the rotary impeller. The present invention proposes a fertilizer spreading device characterized in that the inner end opening of the cylinder is exposed, and the outer end side of the guide cylinder is projected outward from the casing and communicated with the fertilizer tank.

Next, embodiments will be described in detail with reference to the drawings.

In Figures 1 and 2, a is fertilizer spreader A.
1 shows the fertilizer spreading device mounted on the machine frame a.

The fertilizer spreading device 1 has a discharge port 21 in a peripheral wall 20 as shown in FIG. 4, and a discharge port 21 in a peripheral wall 20 as shown in FIG.
A casing 2 formed into a drum shape with through holes 23 and 24 provided in the axial center portions of 2 and 22, respectively, and a rotary shaft 30 disposed in the inner cavity of the casing 2 and rotated by a rotating shaft 30 disposed at the axial center portion of the inner cavity. It consists of a rotary impeller 3 mounted on an axis so as to And the rotor 3 of it is
A mounting plate 3 formed in a disk shape is provided on the inner end surface of the rotating shaft 30 disposed at the axial center of the inner cavity of the casing 2.
1 is fixed with its axis aligned with the axis of the rotating shaft 30, and a plurality of cylindrical bodies 33 are formed on the surface of the mounting plate 31 in the shape of a rectangular tube with both axial ends open.
are arranged so as to protrude radially from around the imaginary extension of the rotating shaft 30, and the cylindrical bodies 33...
The openings on the inner end side of the rotating shafts 30 are arranged in parallel in an annular manner so as to surround the imaginary extension of the rotating shaft 30. The cylindrical body 33 has a shape with a receiving angle that moves forward in the rotational direction (arrow) as shown in FIG. 7, or a shape with a receding angle that moves backward in the rotational direction as shown in FIG. Alternatively, as shown in FIG. 6, it may be designed as appropriate, such as having a larger cross-sectional area on the inner end side. Further, the rotating shaft 30 is pivotally supported by a bearing 34 attached to one of the through holes 23 and 24 provided in the left and right side walls 22 and 22 of the casing 2. The outwardly protruding outer end of the casing 2 is electrically connected to a transmission mechanism in a transmission case 35 installed in the machine frame a described above. Reference numeral 36 denotes an input shaft protruding from the transmission case 35, which is driven and rotated by being connected to, for example, a PTO shaft (not shown) of a tractor or the like.

Reference numeral 4 denotes a pipe-shaped guide tube that serves as a guiding path for granular fertilizer, and its inner end opening 40 is located at the axial center of the rotary wheel 3. A cavity 3 formed by surrounding the openings on the inner end side of the cylinder 33 in parallel in an annular manner.
It is arranged so that it faces inside 2. The outer end side of the guide tube 4 is connected to the side walls 22 and 2 of the casing 2.
2 of the through holes 23 and 24 provided in the other through hole 2
3 to the outside of the casing 2, and an opening 41 on the outer end side is connected to the bottom of the fertilizer tank 5.

The fertilizer tank 5 has a funnel-shaped bottom and is fixedly supported on the machine frame a.

In Fig. 1, reference numerals 6, 7, and 8 are left and right free running wheels, supporting legs that can be freely moved in and out, and a connecting hitch for connecting to a rear hitch (not shown) of a tractor, etc. This is a conventionally known device installed in a frame a.

The embodiment device constructed in this manner operates as follows.

Granular fertilizer flows from the fertilizer tank 5 through the guide cylinder 4 toward the rotary wheel 3 inside the casing 2,
It is guided to the axial center of the rotary impeller 3 and discharged into the cavity 32 formed by the openings on the inner end side of the plurality of cylinders 33 arranged annularly in the axial center.

Then, the granular fertilizer released into the empty chamber 32 falls from that position, and due to the rotation of the rotary impeller 3, the granular fertilizer is sequentially switched to the lower circumferential surface side of the empty chamber 32 and is placed in the cylinder 33. falls into the opening at the inner end of the
It flows into the cylinder 33. As a result, the granular fertilizer faces the axial center of the rotary impeller 3 with respect to the cylinder 33, so that it is reliably supplied to the inner end where the circumferential speed is slowest. As a result, the cylindrical bodies 33, which receive the granular fertilizer, inherit the granular fertilizer with almost no crushing or damage caused by impact.
Then, as the cylinders 33 rotate, the granular fertilizer that has flowed into the cylinder 33 rides on the inner wall surface of the cylinder 33 facing the rotational direction of the rotary impeller 3 and is transferred to the cylinder 33. It is swung out toward the opening on the outer end side.

As explained above, the fertilizer spreading device according to the present invention has a rotary shaft 30 disposed in the axial center of the inner cavity of the casing 2 provided with the discharge port 21, and the rotary shaft 30 has the following functions:
A plurality of cylindrical bodies 33 that are open at both ends in the axial direction protrude radially from around the virtual extension of the rotating shaft 30, and the openings on the inner end side of the plurality of cylindrical bodies 33... are open at both ends of the rotating shaft 30. Rotary impellers 3 arranged annularly in parallel so as to surround the imaginary extension part are mounted on an axis, and are surrounded by openings on the inner end side of the cylinders 33 of the rotary impellers 3 arranged annularly in parallel. An inner end opening 40 of a guide tube 4 for guiding granular fertilizer is exposed in the empty space 32, and the outer end side of the guide tube 4 is made to protrude outward from the casing 2 and communicate with the fertilizer tank 5. Therefore, when feeding granular fertilizer to the plurality of cylindrical bodies 33 of the rotary impeller 3 which shakes it out by centrifugal force, the inner end side of the cylindrical bodies 33 where the circumferential speed is slowest is By reliably supplying the granular fertilizer to the end of the rotating cylinder 33, it becomes possible to supply the granular fertilizer to the rotating cylinder 33 with almost no crushing or damage caused by impact. It is now possible to shake out granular fertilizer as a state in which individual particles have large kinetic energy without being crushed or damaged, and the spraying distance (flight distance) can be increased to efficiently spread over a wide spraying area. become.

[Brief explanation of the drawing]

Figure 1 is a side view of the fertilizer spreader, Figure 2 is a front view of the same as above, Figure 3 is a cutaway side view of the fertilizer spreader, Figure 4 is an enlarged sectional view taken along the - line in Figure 3, and Figure 5 is a side view of the fertilizer spreader. 6, 7, and 8 are perspective views showing other embodiments of the rotary wheel. Explanation of drawing symbols, A...Fertilizer spreader, a...Machine frame, 1...Fertilizer spreader, 2...Casing, 2
0... Peripheral wall, 21... Discharge port, 22... Side wall, 2
3, 24...Through hole, 3...Rotary impeller, 30...Rotating shaft, 31...Mounting plate, 32...Vacancy, 33...
Cylindrical body, 34...Bearing, 35...Conduction case, 36
...Input shaft, 4...Guide tube, 40...Inner end opening of guide tube, 41...Outer end opening of guide tube, 5...Fertilizer tank, 6, 7, 8...Connection hit portion.

Claims (1)

[Scope of utility model registration request] A rotary shaft 30 is disposed in the axial center of the inner cavity of the casing 2 provided with the discharge port 21, and a plurality of cylinder bodies 33 each having both axial ends open are arranged on the rotary shaft 30 as a virtual extension of the rotary shaft 30. The rotary impellers 3 protrude radially from around the rotational shaft 30 and are arranged so that the openings on the inner end side of the plurality of cylinders 33 surround the imaginary extension of the rotating shaft 30 and are arranged in parallel in an annular manner. The inner end opening 40 of the guide cylinder 4 for guiding the granular fertilizer is placed in the cavity 32 surrounded by the inner end openings of the annularly arranged cylinders 33 of the rotary impeller 3. and the outer end side of the guide tube 4,
A fertilizer spreading device characterized by projecting outward from the casing 2 and communicating with a fertilizer tank 5.