KR102433119B1 - Apparatus for spreading pellet type fertilizer - Google Patents

Abstract

The present invention relates to a spraying apparatus for pellet-type fertilizer, a storage hopper in which the 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 It is provided in, and may include a pressurization transfer unit for transferring the supplied fertilizer to the spray target by pressurizing.
According to the present invention, the work efficiency according to the pellet-type fertilizer spraying is improved, and it is possible to minimize the time and manpower required for the 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 sprayed by transferring the pellet-type fertilizer under pressure.

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 to 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, in farmhouses or orchards that grow crops and fruit trees, appropriate fertilizers are used to spray the soil.

In the past, most of these fertilizers were used in powder form, but since the powdered fertilizer has a very light specific gravity, it was blown away by the wind and wasted a lot of fertilizer when it was sprayed. There was a problem that the effect was not shown 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 fertilizers, pellet-type fertilizers in which the fertilizer components are compressed and refined into a certain size and shape are widely used in recent years.

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

On the other hand, although various fertilizer spreaders have been proposed for spraying fertilizers in the prior art, since the conventional fertilizer spreaders are mainly manufactured in 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 the pellet-type fertilizer that can efficiently spray the pellet-type fertilizer to improve work efficiency and eliminate the consumption of manpower.

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 spread 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 feeding unit that is provided above the storage hopper and that sucks the pellet-type fertilizer from the outside and supplies it to the storage hopper, is provided below the storage hopper, and supplies the stored fertilizer to the storage hopper. A feeder for supplying to the pressurized transfer unit, and a pressurized transfer unit provided below the feeder to pressurize the supplied fertilizer and transfer it to a spray target, wherein the feeding unit is provided on the upper side of the storage hopper, A feeding hopper whose lower part is opened and communicates with the storage hopper, a suction hose connected to one suction port of the feeding hopper, and a vacuum pump connected to the feeding hopper through a vacuum hose to apply a vacuum suction force to the feeding hopper; Disclosed is a dispensing apparatus for pellet-type fertilizer including an opening/closing plate provided at the open lower part of the hopper and selectively opening and closing the lower part of the feeding hopper while moving forward and backward by the operating cylinder according to whether or not vacuum suction force is applied.

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 pipe supported by the rear end of the pressure action pipe 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 pipe, the discharge pipe It may include a pressurizing nozzle for transferring to the transfer hose by discharging and pressurizing the fertilizer supplied through the pressure, and a compressor for applying air 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.

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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, thereby 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 the time and manpower required for the spraying operation can be minimized. 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 specifically stated effects 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, it will be described in detail a preferred embodiment of the spraying apparatus of the pellet-type fertilizer according to the present invention.

This embodiment is provided to more clearly explain the present invention to those with average knowledge in the art, and the shape, size, number, spacing between elements, etc. 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 describing the embodiment, if a component is described as “included”, “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 used only 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 describing the embodiment, the detailed description thereof 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 illustrated 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) refers to a fertilizer manufactured by molding in a predetermined size and shape, not in a 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.

In the lower portion of the storage hopper 100, a discharge pipe 110 for allowing the stored fertilizer P to fall to the lower portion and be discharged 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 parts 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 around 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 it rotates, 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 pressure transfer unit (300), and the reverse flow of the fertilizer (P) partially raised by the pressing force generated in the pressure 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 in 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 for transmitting 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 pressure 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 pipe 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 extend a predetermined length horizontally in front and behind 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 pressurizing nozzle 330 transfers the fertilizer P to the transfer hose 320 by discharging and pressurizing the supplied fertilizer P by dropping through the discharge pipe 110 .

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 portion 331 supported and coupled to the rear end of the pressure action tube 310 , a reducer portion 332 extending from the coupling portion 331 and gradually decreasing in diameter, and the reducer portion It may be formed of a discharge part 333 extending a predetermined length from 332 to discharge the pneumatic pressure (A.P).

Here, as illustrated in FIG. 4 , the discharge part 333 from which the pneumatic pressure A.P is discharged is forward than the center C of the discharge pipe 110 , that is, a certain length D is longer in the transfer direction of the fertilizer. 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 A.P. 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 be reduced, so that 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 portion 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 certain pneumatic pressure (A.P) through air compression to apply the pneumatic pressure (A.P) 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 is provided on the upper side of the storage hopper 100, and the lower portion is opened to communicate with the upper end of the storage hopper 100 on 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, which is 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 performed efficiently 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 sieve 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 that can suck the fertilizer (P). will be authorized

The opening/closing plate 440 is provided at an 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 the suction process is completed, 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 operates to close 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 operation of the 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 suction completion, 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 will gradually weaken). 100) may be difficult to supply smoothly.

Therefore, when the air vent 450 opens when the 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 is not stopped It can be released quickly, and accordingly, when the opening and closing plate 440 is opened, the inhaled fertilizer P 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 drive 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 a user to input, change, and set an operation signal, a control signal, etc. may be naturally included.

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 , a 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 spray 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 illustrated 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/closing plate 440 to close the open lower portion 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 inhaled 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 operating 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 restarted, 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 pressure transfer unit 300, the compressor 340 is operated to apply the pneumatic pressure (A.P) to the pressure nozzle 330, and the pressure nozzle 330 discharges the applied pneumatic pressure (A.P) to discharge the discharge pipe (110). Pressurize the fertilizer (P) supplied through it.

Then, the fertilizer (P) pressurized by the pressurizing nozzle 330 is transferred along the inside of the transfer hose 320 to the spraying target site and discharged, so that the spraying is made.

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 a result of being pressurized and transported to the target site for spraying, in the end, through a series of automated processes of suction-storage-supply-pressurization transfer, the spraying of all 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 skilled in the art. It will be said that the changed equivalent configuration does not depart from the scope of the technical spirit of the present invention.

100: storage hopper 110: discharge pipe
200: feeder 220: feeder shaft
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 the storage hopper 100 in which the pellet-type fertilizer (P) is stored;
a feeding unit 400 provided on the upper side of the storage hopper 100 and supplying the pellet-type fertilizer P from the outside to the storage hopper 100;
a feeder 200 provided at the lower side of the storage hopper 100 and supplying the stored fertilizer P to the pressure transfer unit 300 below; and
It is provided on the lower side of the feeder 200, and pressurizes the supplied fertilizer (P) and transfers the pressurized transfer unit 300 to the spray target area; includes,
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 the suction port 411 on one side of the feeding hopper 410,
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;
It is provided in the open lower part of the feeding hopper 410, and includes an opening/closing plate 440 that selectively opens and closes 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. Pellet-type fertilizer spreader. The method of claim 1,
The feeder 200,
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 feeder housing 210;
A plurality of supply blades 230 that are arranged at a predetermined radial angle on the supply shaft 220, and
A pellet-type fertilizer spraying device including a supply driving part for applying rotational power to the feeder 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 and pressurizing the pneumatic pressure AP to the fertilizer P supplied through the discharge tube 110, 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. delete delete The method of claim 1,
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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