KR20210145396A - Apparatus for spreading pellet type fertilizer - Google Patents

Abstract

The present invention relates to a pellet-type fertilizer spreading device comprising: a storage hopper in which pellet-type fertilizer is stored; a feeder provided at a lower side of the storage hopper and supplying the stored fertilizer to a pressurized transfer unit; and the pressurized transfer unit provided at the lower side of the feeder and pressurizing the supplied fertilizer and transferring the same to a spraying target site. According to the present invention, the work efficiency according to the pellet-type fertilizer spraying is improved, thereby minimizing the time and manpower required for a spraying operation.

Description

Pellet-type fertilizer spreading device {Apparatus for spreading pellet type fertilizer}

The present invention relates to a spraying apparatus for pellet-type fertilizer that can be efficiently spread by pressurizing the pellet-type fertilizer.

Fertilizer is a generic term for substances that bring about chemical changes in the soil to maintain or enhance the productivity of the soil, to nourish the crops so that they can grow well, or to help the cultivation of crops.

In order to promote the growth of crops or fruit trees, increase yield, and improve quality, suitable fertilizers are used to spray the soil in farms or orchards that grow crops and fruit trees.

In the past, most of these fertilizers were used in powder form. However, since the fertilizer in powder form has a very light specific gravity, it was blown away by the wind when it was applied, resulting in a lot of wastage of fertilizers. There was a problem that the effect could not be exerted properly as it was washed away with water, and there was also a problem that the fertilizer blown in the wind pollutes the surrounding environment or damages people and livestock.

Accordingly, in order to solve the problems of the above powdered fertilizer, pellet-type fertilizer obtained by compression molding the fertilizer component to have a predetermined size and shape has been widely used.

However, these pellet-type fertilizers have the advantage of solving the problems of powder-type fertilizers, but there is no suitable spraying device for them, so the operator has no choice but to spray them by hand one by one, and thus the work efficiency is reduced. There is a problem in that there is a problem in that the spraying operation is difficult in farmhouses with insufficient labor due to the high manpower consumption.

On the other hand, although various fertilizer spreading devices for fertilizer application have been proposed in the prior art, since the conventional fertilizer spreading devices are mainly manufactured with a structure suitable for powder-type fertilizers, when applied to pellet-type fertilizers, the pellet-type fertilizers are damaged. Or it is crushed so that an efficient spraying operation cannot be made.

Therefore, it will be said that there is an urgent need for the development of a spraying device for pellet-type fertilizer that can efficiently spread the pellet-type fertilizer to improve work efficiency and eliminate manpower consumption.

Registered Patent No. 10-0784621: Pellet-type fertilizer and manufacturing method of pellet-type fertilizer

The present invention is proposed to solve the above-mentioned problems of the prior art, and an object of the present invention is to efficiently spray the pellet-type fertilizer as it is, while preventing damage to the pellet-type fertilizer by transferring and spraying the pellet-type fertilizer to the application site through a pressurization method. It is to provide an application of pellet-type fertilizer that can be used.

In addition, it is an object of the present invention to provide a pellet-type fertilizer spreader that can improve work efficiency and minimize the manpower consumed in the spraying operation by automating all processes from suction to supply and pressure spraying of pellet-type fertilizer.

As a problem solving means of the present invention for achieving the above object,

A storage hopper in which pellet-type fertilizer is stored, a feeder provided below the storage hopper and supplying the stored fertilizer to the following pressurized transfer unit, and a lower side of the feeder, pressurizing the supplied fertilizer to a spray target Disclosed is a spraying device for pellet-type fertilizer including a pressure transfer unit for transferring.

Here, the feeder, a feeder housing communicating with the discharge pipe of the storage hopper, a feeder shaft rotatably installed inside the feeder housing, a plurality of feed blades arranged at a radial angle to the feeder shaft, and the It may include a supply driving unit for applying rotational power to the supply shaft.

In addition, the pressure transfer unit is installed inside the pressure action tube supported by the rear end of the pressure action tube and the front end is connected to the transfer hose while communicating with the discharge pipe and the upper surface of the storage hopper, the pressure action tube, the discharge pipe It may include a pressurizing nozzle for transferring to the transfer hose by discharging and pressurizing the fertilizer supplied through the pneumatic pressure, and a compressor for applying pneumatic pressure to the pressurizing nozzle.

In addition, in the pressure nozzle, the discharge part may be extended by a predetermined length longer in the fertilizer conveying direction than the center of the discharge pipe.

In addition, it is provided on the upper side of the storage hopper, it may further include a feeding unit that sucks the pellet-type fertilizer from the outside and supplies it to the storage hopper.

In addition, the feeding unit is provided on the upper side of the storage hopper, the lower part of the feeding hopper is open to communicate with the storage hopper, a suction hose connected to one suction port of the feeding hopper, and a vacuum hose to the feeding hopper through A vacuum pump connected to apply a vacuum suction force to the feeding hopper, and an opening and closing plate provided at the open lower part of the feeding hopper and selectively opening and closing the lower part of the feeding hopper while moving forward and backward by an operating cylinder depending on whether a vacuum suction force is applied can do.

In addition, an air vent for selectively venting the inside of the feeding hopper with the outside may be installed at the upper end of the feeding hopper.

According to the spraying apparatus of the pellet-type fertilizer according to the present invention,

Since spraying is carried out in a pressurized manner by pneumatic pressure, the pellet-type fertilizer can be sprayed in its original form without damage, which has the advantage of maximizing the spraying effect of the pellet-type fertilizer.

In addition, since the suction process and the pressure spraying process are performed at the same time as the pellet-type fertilizer is sucked automatically, the work efficiency is improved, enabling a quick and efficient spraying operation, and also minimizing the time and manpower required for the spraying operation. It has the advantage of greatly reducing the economic burden caused by the spraying operation.

In addition, it is added that, in addition to the effects specifically specified as described above, the specific effects that can be easily derived and expected from the characteristic configuration of the present invention can also be included in the effects of the present invention.

1 is a view schematically illustrating an overall configuration of a pellet-type fertilizer spreading device according to an embodiment of the present invention;
2 is a view illustrating the configuration of a storage hopper and a feeding unit according to an embodiment of the present invention;
3 is a diagram illustrating an example of the configuration of a feeder according to an embodiment of the present invention;
4 is a view illustrating a configuration of a pressure transfer unit according to an embodiment of the present invention;
5 to 9 are views each sequentially illustrating the action of the pellet-type fertilizer spreading device according to the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the pellet-type fertilizer spraying apparatus according to the present invention.

This embodiment is provided to more clearly explain the present invention to those with average knowledge in the art. It may be reduced or exaggerated for emphasis, and it is not limited to the matters illustrated in the drawings unless specifically limited.

In addition, in the description of the embodiment, if it is described that a certain component is “provided”, “formed”, “installed”, “coupled”, “fixed”, or “connected” to another component, , may be provided, formed, installed, coupled, fixed, or connected directly to the other components, but it will be understood that other components may exist in the middle.

In addition, terms indicating directions such as front, back, left, right, top, bottom, etc. are only used to describe the directions shown and observed in the drawings, and if the directions shown and observed are changed, these terms may also vary. It should be understood that there is

In addition, when it is determined that the technical features of the present invention may be unnecessarily obscured as it is already obvious to a person skilled in the art, such as a known function or a known configuration related in principle in explaining the embodiment, the detailed A description will be omitted.

1 to 4, the configuration of the pellet-type fertilizer spreading device according to an embodiment of the present invention is exemplified, and in Figs. 5 to 9, the action of the pellet-type fertilizer spreading device is exemplified.

As exemplified in the drawings, the pellet-type fertilizer spreading device (10, hereinafter, abbreviated as “spreading device”) according to an embodiment of the present invention is broadly viewed as a storage hopper 100 and, The feeder 200 and the pressure transfer unit 300 may be included.

The storage hopper 100 is a portion in which the pellet-type fertilizer (P) is stored.

Here, the pellet-type fertilizer (P) means a fertilizer manufactured by molding in a predetermined size and shape, not in powder form, and as an example, the pellet-type fertilizer may be a cylindrical fertilizer having a length of about 5 to 10 mm.

The storage hopper 100 may have a shape of an upper-gwang-lower narrow that becomes narrower from an upper side to a lower side, but is not necessarily limited thereto and may have any other suitable shape.

A discharge pipe 110 through which the stored fertilizer P can be discharged by dropping to the lower portion of the storage hopper 100 may be formed.

The feeder 200 is a part that supplies the fertilizer P stored in the storage hopper 100 to the pressure transfer unit 300 on the lower side.

The feeder 200 may be installed between the upper storage hopper 100 and the lower pressurized transfer unit 300 , and specifically, the discharge pipe 110 connecting the storage hopper 100 and the pressurized transfer unit 300 . ) can be installed.

As illustrated in FIG. 3 , the feeder 200 may include a feeder housing 210 , a feeder shaft 220 , a feeder blade 230 , and a feeder driving unit.

The feeder housing 210 is installed on the discharge pipe 110 , and may be installed so that both upper and lower portions communicate with the discharge pipe 110 .

The feeder shaft 220 may be rotatably installed inside the feeder housing 210 .

The feeder shaft 220 is rotated inside the feeder housing 210 according to the operation of the feed driving unit, and the rotation speed may be appropriately designed.

The supply blades 230 may be formed in plurality, and may be arranged at intervals of a radial constant angle on the supply shaft 220 .

The number of the plurality of supply blades 230 may be appropriately adopted, and as an example, as illustrated in FIG. 3 , there are six and may be arranged at intervals of 60 degrees radially based on the supply shaft 220 .

The plurality of supply wings 230 are rotated around the supply shaft 220 in the inside of the supply housing 210, and as they rotate, the fertilizer P in the upper part of the discharge pipe 110 is led to the discharge pipe ( By forcibly falling to the lower part of 110), the stored fertilizer (P) is supplied to the pressurized transfer unit (300), and the reverse flow of the fertilizer (P) partially raised by the pressing force generated in the pressurized transfer unit (300) is blocked by blocking the stored Fertilizer (P) to be smoothly supplied to the pressure transfer unit (300).

The supply driving unit applies rotational power to the supply shaft 220 to rotate the supply shaft 220 .

The supply driving unit includes a driving motor 241 for generating rotational power, a driving gear 242 installed on the driving motor 241 , a driven gear 243 coupled to the supply shaft 220 , and the driving gear It may include a power transmission chain 244 that transmits the rotational force of the 242 to the driven gear 243 .

The rotational speed of the feeder shaft 220 varies according to the gear ratio between the driving gear 242 and the driven gear 243 , and thus the gear ratio between the driving gear 242 and the driven gear 243 is that of the feeder shaft 220 . It can be appropriately adopted in consideration of the rotation speed.

The pressurization transfer unit 300 is provided at the lower side of the feeder 200, and is a part that pressurizes the supplied fertilizer (P) and transfers it to the spray target area.

That is, the fertilizer (P) supplied by the feeder 200 is transferred by the pressure transfer unit 300 to the application area under pressure, so that the spraying is made.

As illustrated in FIG. 4 , the pressure transfer unit 300 may include a pressure action tube 310 , a transfer hose 320 , a pressure nozzle 330 , and a compressor 340 .

The pressure action pipe 310 may be installed in communication with the discharge pipe 110 at the lower side of the feeder 200 .

The pressure action pipe 310 may horizontally extend a predetermined length before and after the discharge pipe 110 while the vertically downwardly extending discharge pipe 110 communicates with the upper surface. That is, the discharge pipe 110 and the pressure action pipe 310 may be formed in a T-tube shape.

The transfer hose 320 may be connected to the front end of the pressure action pipe 310 to extend a certain length to the spray target site.

This transfer hose 320 functions as a passage through which the fertilizer (P) pressurized inside the pressure action pipe 310 is transferred to the spray target site.

The pressure nozzle 330 transfers the fertilizer P to the transfer hose 320 by discharging air pressure (A.P) to the fertilizer P that is dropped through the discharge pipe 110 and pressurized.

The pressure nozzle 330 is provided inside the pressure action tube 310, and may be formed to extend a certain length into the pressure action tube 310 while being coupled and supported to the rear end of the pressure action tube 310. .

Specifically, the pressure nozzle 330 includes a coupling part 331 supported and coupled to the rear end of the pressure action pipe 310, a reducer part 332 extending from the coupling part 331 and gradually decreasing in diameter, and the reducer part. At 332 , a predetermined length is extended and the discharge unit 333 is configured to discharge the pneumatic pressure (AP).

Here, as illustrated in FIG. 4 , the discharge part 333 to which the pneumatic pressure (AP) is discharged is forward than the center C of the discharge pipe 110, that is, a certain length D in the direction of feeding the fertilizer longer. It is preferable to extend.

This is when the discharge part 333 is located further back than the center C of the discharge pipe 110, the fertilizer P falling through the discharge pipe 110 receives a lifting force by the pneumatic pressure AP, thereby refluxing the fertilizer. This is because the fertilizer supply and transfer efficiency may be reduced.

However, if the discharge part 333 extends forward too long than the center C of the discharge pipe 110, the pressurization efficiency of the discharged fertilizer may decrease, so the length D is the diameter of the discharge pipe 110, the pressure It may be appropriately adopted according to the diameter of the working tube 310, the diameter of the discharge part 333, and the like, and may be, for example, 10 to 20 mm.

The compressor 340 is connected through the pressurizing nozzle 330 and the pneumatic hose 341 , and generates a predetermined pneumatic pressure (AP) through air compression and applies the pneumatic pressure (AP) to the pressurizing nozzle 330 . .

On the other hand, the above-described spraying device 10 of the present invention, depending on the embodiment, may be configured to further include a feeding unit (400).

The feeding unit 400 is a part for supplying and storing a predetermined amount of the pellet-type fertilizer (P) from the outside to the storage hopper (100).

That is, the feeding unit 400 sucks a predetermined amount of the pellet-type fertilizer (P) from the external fertilizer storage tank 20 in which the pellet-type fertilizer (P) is stored, such as a fertilizer bag or a fertilizer container, and stores it in the storage hopper (100). make it

In other words, the fertilizer P stored in the storage hopper 100 may be manually input and stored by an operator, but may be automatically stored through suction and supply of the feeding unit 400 .

As illustrated in FIG. 2 , the feeding unit 400 may be provided on the upper side of the storage hopper 100 , and a feeding hopper 410 , a suction hose 420 , a vacuum pump 430 , and opening/closing It may include a plate 440 and an air vent 450 .

The feeding hopper 410 may be provided on the upper side of the storage hopper 100 , and the lower portion may be opened to communicate with the upper end of the storage hopper 100 at the lower side.

The feeding hopper 410 provides a vacuum space for suction of the pellet-type fertilizer P therein, and provides a storage space that is temporarily stored until the inhaled fertilizer P is supplied to the storage hopper 100. can

The feeding hopper 410 may have a shape of an upper-gwang-lower narrow that becomes narrower from an upper part to a lower part, but is not limited thereto, and may have any other suitable shape.

In addition, a suction port 411 may be formed at one side of the feeding hopper 410 , and a suction guide plate 412 may be installed at an upper side of the suction port 411 .

The suction guide plate 412 guides the advancing direction of the inhaled fertilizer P downward by blocking the fertilizer P introduced through the suction port 411 from advancing upward.

That is, the fertilizer P introduced through the suction port 411 is dropped downward by the suction guide plate 412 so that loading can be efficiently achieved from the lower side of the feeding hopper 410 .

In addition, a strainer 413 may be installed on the inner upper portion of the feeding hopper 410 . The strainer 413 blocks the inhaled fertilizer P from flowing into the vacuum hose 431 to be described later.

Here, the feeding hopper 410 has a lower loading hopper 410a in communication with the storage hopper 100 and the loading hopper 410a, as illustrated in FIG. 2 for smoother suction of the fertilizer P. It is possible to consist of an upper suction recess (410b) communicating with the upper center of the.

The upper suction chamber 410b is a portion where fertilizer P is sucked, and the lower loading container 410a is a portion where the fertilizer P sucked through the suction chamber 410b is dropped and loaded, and the suction chamber (410b) may have a relatively small size compared to the loading compartment (410a).

When the feeding hopper 410 is configured in this way, the inhaled fertilizer P is concentrated only on the portion close to the suction port 411 and is not loaded, but falls into the loading compartment 410a to be evenly loaded, so that a larger amount of It becomes possible to inhale the fertilizer (P) efficiently.

The suction hose 420 is connected to the suction port 411 of the feeding hopper 410 and may extend a predetermined length to the external fertilizer storage tank 20 .

This suction hose 420 functions as a passage through which the pellet-type fertilizer (P) is sucked into the feeding hopper (410) from the external fertilizer storage tank (20) when a vacuum suction force is applied to the inside of the feeding hopper (410).

The vacuum pump 430 applies a vacuum suction force to the inside of the feeding hopper 410 .

This vacuum pump 430 may be connected to the upper end of the feeding hopper 410 through a vacuum hose 431, and when operated, vacuum the inside of the feeding hopper 410 by vacuuming the inside of the feeding hopper 410 to obtain a vacuum suction power capable of sucking the fertilizer (P). will approve

The opening/closing plate 440 is provided at the open lower portion of the feeding hopper 410, and selectively opens and closes the lower portion of the feeding hopper 410 depending on whether a vacuum suction force is applied.

That is, the opening/closing plate 440 closes the open lower portion of the feeding hopper 410 when a vacuum suction force is applied to the feeding hopper 410 by operating the vacuum pump 430 so that the inside of the feeding hopper 410 is sealed. , when the suction is completed, the lower portion of the feeding hopper 410 is opened so that the inhaled fertilizer P can be supplied by falling into the lower storage hopper 100 .

In other words, the opening/closing plate 440 closes the lower portion of the feeding hopper 410 so that the inside of the feeding hopper 410 can be evacuated in the vacuum suction process, and after completion of the suction process, the sucked fertilizer P is dropped. The lower portion of the feeding hopper 410 is opened so that it can be stored as the storage hopper 100 .

The opening/closing plate 440 may be coupled to the operation cylinder 441 and moved forward and backward to close or open the opened lower portion of the feeding hopper 410 .

The air vent 450 is provided at the upper end of the feeding hopper 410 to selectively vent the inside of the feeding hopper 410 to the outside.

That is, the air vent 450 closes when a vacuum suction force is applied to the feeding hopper 410 by operating the vacuum pump 430 so that the inside of the feeding hopper 410 is sealed, but according to the suction completion, the vacuum pump When the operation of 430 is stopped, the opening operation is performed to vent the inside of the feeding hopper 410 with the outside.

Even if the operation of the vacuum pump 430 is stopped according to the completion of the suction, the rotation of the impeller of the vacuum pump 430 does not stop immediately, but gradually stops due to inertia. The vacuum suction force may remain inside the 410) for a certain period of time (although it gradually becomes weaker). 100) may be difficult to supply smoothly.

Therefore, when the air vent 450 opens when suction is completed to vent the inside of the feeding hopper 410 with the outside, the vacuum suction power inside the feeding hopper 410 even when the impeller rotation of the vacuum pump 430 does not stop is It can be released quickly, and accordingly, the fertilizer P sucked when the opening/closing plate 440 is opened can be supplied to the lower storage hopper 100 more quickly and smoothly.

In addition, after the fertilizer (P) is quickly supplied to the storage hopper 100 before the impeller rotation of the vacuum pump 430 completely stops as above, immediately close the opening/closing plate 440 and operate the vacuum pump 430 again. Since the subsequent suction process can be performed, it is possible to reduce the process time and also minimize power consumption due to the re-operation of the vacuum pump 430 .

On the other hand, although not shown in the drawing, the spraying device 10 of the present invention configured as described above is the overall operation of the above components according to the programmed control logic, that is, the driving motor 241 operation of the feeder 200, A control unit for controlling the operation of the compressor 340 of the pressure transfer unit 300, the vacuum pump 430 of the feeding unit 400, the operation cylinder 441, and the air vent 450 may be included, respectively, and , it can be fully understood that a user operation unit that allows the user to input, change, and set operation signals, control signals, etc. may be included as a matter of course.

As described above, the configuration of the spraying device 10 according to an embodiment of the present invention has been described. Hereinafter, a brief look at the action of the spraying device 10 having the above-described configuration with reference to FIGS. 5 to 9 do it with

First, as illustrated in FIG. 5 , the suction hose of the feeding unit 400 in a state in which a fertilizer storage tank 20 such as a fertilizer bag containing a pellet-type fertilizer P is prepared near the spraying device 10 of the present invention. (420) is inserted into the fertilizer storage tank 20, and the transfer hose 320 of the pressurized transfer unit 300 is dragged and positioned to the spraying target to be sprayed with the fertilizer (P), so that the suction hose 420 and the transfer hose (320) is set.

When the pre-setting of the suction hose 420 and the transfer hose 320 is completed in this way, first according to the user's operation signal input, as exemplified in FIG. 6 , the suction process of the fertilizer P by the feeding unit 400 . this begins

That is, the operating cylinder 441 is operated to close the opening and closing plate 440 to the open lower part of the feeding hopper 410, and the vacuum pump 430 is operated to apply a vacuum suction force to the inside of the feeding hopper 410. .

Of course, at this time, if the air vent 450 is in a closed state or an open state, the closing operation is performed to seal the inside of the feeding hopper 410 .

When a vacuum suction force is applied to the inside of the feeding hopper 410 according to the operation of the vacuum pump 430 in this way, the fertilizer P accommodated in the fertilizer storage tank 20 is transferred along the suction hose 420 to the inside of the feeding hopper 410 . begins to be inhaled.

At this time, the sucked fertilizer P is guided downward by the suction guide plate 412 so that the loading is sequentially performed from the lower side of the feeding hopper 410 .

And, when a certain amount of fertilizer P is sucked and loading is completed, then the operation of the vacuum pump 430 is stopped and the air vent 450 is opened to quickly release the vacuum state inside the feeding hopper 410. .

At the same time, the operation cylinder 441 is operated to open the opening/closing plate 440 to open the lower portion of the feeding hopper 410, and accordingly, as illustrated in FIG. (P) is dropped to the lower side is stored in the storage hopper (100).

After the fertilizer P of the feeding hopper 410 is dropped and a certain amount is stored in the storage hopper 100, as illustrated in FIG. 8, the opening/closing plate 440 and the air vent 450 are closed again. As the vacuum pump 430 is operated again, the suction process by the feeding unit 400 is started again in the upper side of the storage hopper 100 .

At the same time, at the lower side of the storage hopper 100, the supply driving part of the feeder 200 is operated, and accordingly, the plurality of supply wings 230 rotate and the fertilizer P stored in the storage hopper 100 is discharged through the discharge pipe 110. It is supplied to the pressure transfer unit 300 on the lower side through the .

And, in the pressurization transfer unit 300, the compressor 340 is operated to apply the pneumatic pressure AP to the pressurization nozzle 330, and the pressurization nozzle 330 discharges the applied pneumatic pressure AP to the discharge pipe 110. Pressurize the fertilizer (P) supplied through it.

Then, the fertilizer (P) pressurized by the pressure nozzle 330 is transferred along the inside of the transfer hose 320 to the destination to be sprayed and discharged, thereby performing the spraying.

In this way, while the spraying process of fertilizer P by pressurized transfer from the lower side of the storage hopper 100 is in progress, when the suction process of fertilizer is completed in the upper side of the storage hopper 100, as illustrated in FIG. 9 , again The opening/closing plate 440 and the air vent 450 are opened to re-supply a certain amount of the inhaled fertilizer P to the storage hopper 100 .

As the suction process by the feeding unit 400 is repeated, the storage hopper 100 continuously stores the fertilizer P, and the stored fertilizer P is continuously sprayed by the pressure transfer unit 300 . As the spraying is carried out by pressurized transport to the target site, in the end, through a series of automated processes of suction-storage-supply-pressurization transfer, the spraying of all the fertilizers (P) accommodated in the fertilizer storage tank 20 is performed smoothly and efficiently. will be.

The preferred embodiments of the present invention have been described in detail above, but the technical scope of the present invention is not limited to the contents described in the above-described embodiments and drawings, and may be modified or modified by those of ordinary skill in the art. Modified equivalent configuration will be said to not depart from the scope of the technical spirit of the present invention.

100: storage hopper 110: discharge pipe
200: supply 220: supply axis
230: supply blade 241: drive motor
300: pressure transfer unit 310: pressure action tube
320: transfer hose 330: pressure nozzle
340: compressor 400: feeding unit
410: feeding hopper 420: suction hose
430: vacuum pump 440: opening and closing plate
450: air vent

Claims (7)

And a storage hopper 100 in which the pellet-type fertilizer (P) is stored;
a feeder 200 provided at a lower side of the storage hopper 100 and supplying the stored fertilizer P to the pressure transfer unit 300 below; and
A pellet-type fertilizer spraying device comprising a; it is provided on the lower side of the feeder 200, and pressurizes the supplied fertilizer (P) and transfers the supplied fertilizer (P) to the spray target area. The method of claim 1,
The feeder 200,
and a feeder housing 210 communicating with the discharge pipe 110 of the storage hopper 100;
a feeder shaft 220 that is rotatably installed in the inside of the feeder housing 210;
A plurality of supply blades 230 that are arranged at a predetermined angle radially to the supply shaft 220, and
A pellet-type fertilizer spraying device including a supply driving unit for applying rotational power to the supply shaft 220 . The method of claim 1,
The pressure transfer unit 300,
While the upper surface is in communication with the discharge pipe 110 of the storage hopper 100, the front end is a pressure action pipe 310 connected to the transfer hose 320,
It is supported at the rear end of the pressure action tube 310 and installed inside the pressure action tube 310, and by discharging the pneumatic pressure AP to the fertilizer P supplied through the discharge tube 110 and pressurizing the fertilizer (P) a pressure nozzle 330 for transferring the to the transfer hose 320, and
Pellet-type fertilizer spraying apparatus including a compressor 340 for applying pneumatic pressure (AP) to the pressure nozzle (330). 4. The method of claim 3,
The pressure nozzle 330 is a pellet-type fertilizer spraying device, characterized in that the discharge part 333 extends longer than the center (C) of the discharge pipe 110 by a certain length (D) in the direction in which the fertilizer is transported. The method of claim 1,
A feeding unit 400 that is provided on the upper side of the storage hopper 100 and supplies the pellet-type fertilizer (P) from the outside to the storage hopper 100; 6. The method of claim 5,
The feeding unit 400,
A feeding hopper 410 provided on the upper side of the storage hopper 100 and having an open lower portion to communicate with the storage hopper 100,
A suction hose 420 connected to one suction port 411 of the feeding hopper 410 and,
a vacuum pump 430 connected to the feeding hopper 410 through a vacuum hose 431 to apply a vacuum suction force to the feeding hopper 410;
Pellets comprising an opening/closing plate 440 provided in the open lower portion of the feeding hopper 410 and selectively opening and closing the lower portion of the feeding hopper 410 while moving forward and backward by the operation cylinder 441 depending on whether a vacuum suction force is applied. Mold fertilizer spreader. 7. The method of claim 6,
An air vent 450 for selectively venting the inside of the feeding hopper 410 with the outside is installed at the upper end of the feeding hopper 410. A pellet-type fertilizer spraying device.

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