KR102620951B1 - Wide area spreader with high blowing efficiency - Google Patents

Abstract

The present invention relates to a wide-area spreader, and the gear structure equipped with a plurality of blowing fans dramatically increases blowing efficiency so that the plurality of blowing fans have the same blowing direction, and the blowing fan in the outlet direction blows in the inlet direction. The purpose is to provide a wide-area spreader with a structure that increases the rotation speed to a greater extent than that of the fan, and that realizes high-efficiency blowing ability by varying the blade angles of the suction fan and push fan.

Description

Wide area spreader with high blowing efficiency}

The present invention relates to a wide-area spreader, and more specifically, a gear structure equipped with a plurality of blowing fans, which dramatically increases blowing efficiency so that the plurality of blowing fans have the same blowing direction, and the blowing fan in the outlet direction has an inlet It relates to a wide-area spreader that has a structure in which the rotation speed is increased to a greater extent than that of a directional blowing fan, and a high-efficiency blowing ability is realized by varying the blade angles of the suction fan and push fan.

As is well known, there are many known pest control vehicles that automatically spray pesticides to prevent various pests and diseases in orchards when cultivating orchards.

Typically, a pest control vehicle is equipped with a driver's seat at the front with an opening on one side to facilitate the driver's boarding, and a pump, nozzle, and blower at the rear.

In this type of pest control vehicle, when the worker in the driver's seat at the front adjusts the pressure of the nozzle, the pressure adjusted by the pump at the rear sprays pesticide through the nozzle at an appropriate pressure, and the sprayed pesticide is adjusted to the blowing pressure of the blower. As it spreads widely, widespread spraying takes place.

It is also known by registered patent No. 10-1201952.

On the other hand, among these types of pest control devices, there is a wide-area pesticide that can spray chemicals on a large area in a short period of time. Since these wide-area pesticides require securing a large wind volume, the output capacity of the engine that accelerates the fan is large. is being demanded.

However, there are realistic limitations in producing engines with large output, so simply increasing engine output has significant limitations.

Accordingly, the affiliated company (Hana Ecowide) of the company (“Hana Tech”) of which the present applicant serves as the representative improved the blower structure of this pest control vehicle and applied for a patent to secure the same technology as registered patent number 10-1460725. .

However, when the technology of Registered Patent No. 10-1460725 was actually developed, there were several problems.

First, in order to increase the blowing wind pressure, a drive bevel gear was configured on the output shaft 211, and a structure was implemented in which a plurality of driven bevel gears meshed on the outer periphery of the drive bevel gear. However, this structure was implemented with a plurality of blowing fans. Since the mutual blowing directions are opposite to each other, the blowing wind pressure does not increase, but rather, the blowing wind pressure of one blowing fan is canceled out by the other blowing fan, and the efficiency is significantly lower than when a single blowing fan is configured. There was a problem.

Second, the blowing duct structure of a general wide-area pest control device increases blowing efficiency only when the wind pressure at the outlet side is higher than the wind pressure at the inlet side. However, the technology of registered patent 10-1460725 allows multiple blower fans to rotate with the same rotational force, thereby increasing blowing efficiency. There was a problem that efficiency was not high.

This problem can be said to be a problem that requires rapid improvement, as it is highly involved in reducing the blowing efficiency of wide-area pest control devices.

The present invention was made in consideration of the circumstances of the prior art, and the gear structure equipped with a plurality of blowing fans dramatically increases blowing efficiency so that the plurality of blowing fans have the same blowing direction, and blows in the outlet direction. The fan has a structure in which the rotation speed is increased to a greater extent than the blowing fan in the inlet direction, and the purpose is to provide a wide-area spreader that realizes high-efficiency blowing ability by varying the blade angles of the suction fan and push fan.

In order to achieve the above object, according to a preferred embodiment of the present invention, an engine that generates rotational power, a drug tank containing a drug diluted by mixing a drug solution in water, and a drug tank that receives rotational force from the engine In a wide-area sprayer with high blowing efficiency equipped with a spraying means for spraying the drug by sucking the drug mixture from the mixture and spraying it with blown air, the spraying means is formed in a cylindrical shape, and includes a blowing duct having an inlet and an outlet connected to each other. 14), a gear unit 31 mounted inside the rear end of the blowing duct 14, and a push fan 34 installed at the front and rear ends of the gear unit 31, respectively, and generating wind pressure in the same wind direction, and It consists of a suction fan (32); The gear unit 31 includes a power conversion unit 70 that converts the rotational power of the engine 8 so that the push fan 34 and the suction fan 32 rotate in the same rotation direction, and the power conversion unit ( A wide-area spreader is provided, characterized in that it consists of a speed increase operation unit 80 that is linked with 70) and causes the push fan 34 to rotate at a greater rotation speed than the suction fan 32.

Preferably, the power conversion unit 70 includes a driving bevel gear 72 connected to a drive shaft 28 that receives rotational force from the output shaft of the engine; a driven bevel gear (74) engaged perpendicularly to the driving bevel gear (72); A suction blowing shaft 76 is axially coupled to the driven bevel gear 74, extends in the inlet and outlet directions, and is coupled to the suction fan 32; It is connected in the direction of the outlet of the suction blowing shaft 76 and consists of a push blowing shaft 90 to which the push fan 34 is coupled; A wide-area spreader is provided, wherein a bearing 48 is arranged and supported on the same axis between the suction blowing shaft 76 and the push blowing shaft 90 without transmitting rotational force.

Preferably, the speed increase operation unit 80 includes a first helical gear 82 coupled to the outer periphery of the suction blowing shaft 76; a counter shaft 84 installed parallel to the suction blowing shaft 76 and the push blowing shaft 90; a second helical gear 86 engaged with the first helical gear 82 and coupled to the outer periphery of the rear end of the counter shaft 84; a third helical gear 88 coupled to the front outer periphery of the counter shaft 84; A wide area spreader is provided, characterized in that it is coupled to the front outer periphery of the push blowing shaft 90 and consists of a fourth helical gear 92 meshed with the third helical gear 88.

Preferably, the first, second, and fourth helical gears (82, 86, and 92) have the same diameter, and the third helical gear (88) has the same diameter as the first, second, and fourth helical gears (82, 86, and 92). ), and the diameter of the push blowing shaft 90 is made higher than that of the suction blowing shaft 76.

Preferably, the suction fan 32 is designed so that the mounting angle of the blades 32a with respect to the center line A is relatively smaller than the mounting angle of the blades 34a of the push fan 34. A wide area spreader is provided.

In the wide area spreader according to the present invention, the blowing pressure generated by the suction fan and push fan mounted in the blowing duct rotating in the same direction does not collide with each other and cancel each other, but is added and amplified to maximize blowing efficiency. Additionally, the push fan that discharges air toward the outlet rotates faster than the suction fan that intakes external air, which has the advantage of being able to spray the sucked air more strongly toward the outlet.

1 is a side view showing the configuration of a wide-area spreader according to an embodiment of the present invention;
Figure 2 is an exploded perspective view showing the configuration of a spraying means included in a wide-area sprayer according to an embodiment of the present invention;
Figure 3 is a side cross-sectional view showing the configuration of a gear part included in a wide-area spreader according to an embodiment of the present invention;
Figure 4 is an exploded perspective view showing the configuration of the gear part included in the wide-area spreader according to an embodiment of the present invention;
Figure 5 is a diagram showing the mounting angles of the suction fan and push fan included in the wide-area spreader according to an embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the drawings.

Figure 1 is a side view showing the configuration of a wide-area spreader according to an embodiment of the present invention, Figure 2 is an exploded perspective view showing the structure of a spraying means included in a wide-area spreader according to an embodiment of the present invention, and Figure 3 is a Figure 4 is a side cross-sectional view showing the configuration of a gear part included in a wide-area spreader according to an embodiment of the present invention, Figure 4 is an exploded perspective view showing the structure of a gear part included in a wide-area spreader according to an embodiment of the present invention, and Figure 5 is the present invention. This is a diagram showing the mounting angles of the suction fan and push fan included in the wide-area spreader according to one embodiment of the invention.

Referring to this, the wide-area spreader (2) according to an embodiment of the present invention has a gear structure equipped with a plurality of blowing fans, dramatically increases blowing efficiency so that the plurality of blowing fans have the same blowing direction, and has a gear structure equipped with a plurality of blowing fans. It is a wide-area sprayer that has a structure in which the blowing fan on the side increases its rotation speed to a greater extent than the blowing fan in the inlet direction, enabling high-efficiency blowing ability.

In more detail, the wide-area spreader (2) according to an embodiment of the present invention is manufactured to be mounted on a vehicle. Typically, the wide-area spreader (2) according to an embodiment of the present invention uses rotational power in most cases. An engine (8) that generates electricity, a drug tank (6) containing a drug diluted by mixing the drug solution in water, and receiving rotational force from the engine (8) sucks and blows the drug mixture from the drug tank (6). The spraying means (10), which sprays the chemical by spraying it with air, is loaded on the loading unit (4).

At this time, the spraying means 10 has a cylindrical shape and is composed of a blowing duct 14 in which an inlet 16 and an outlet 18 are connected, and the blowing duct 14 is connected to the suction fan 32. ) is configured in the shape of a straight pipe to provide a passage through which the air flows to enable blowing to a long distance by inducing a flow of air that pushes the air sucked in to the push fan 34, preferably the The blowing duct 14 is formed in the form of a backlight tube to maximize spraying pressure to enable long-distance spraying.

In addition, a spray nozzle 24 for spraying a drug is provided inside the outlet 18 of the blowing duct 14, and the drug stored in the drug tank 6 is guided through the spray line 12. It is possible to spray through the spray nozzle 24 and spray the drug onto a wide target area using the blowing pressure of the blowing duct 14.

In the middle of the injection line 12, an injection pump 20 is provided to transport the drug in the direction of the injection nozzle 24, and a valve is used to control the opening and closing of the drug delivered by the injection pump 20. (22) is provided.

Meanwhile, a blowing drive unit 30 that actually generates blowing pressure is provided inside the blowing duct 14 provided in the spraying means 10, and the blowing driving part 30 is located inside the rear end of the blowing duct 14. It consists of a gear unit 31 mounted on the gear unit 31, a push fan 34 and a suction fan 32, which are respectively mounted on the front and rear ends of the gear unit 31 and generate wind pressure in the same wind direction.

At this time, the gear unit 31 includes a power conversion unit 70 that converts the rotational power of the engine 8 so that the push fan 34 and the suction fan 32 rotate in the same rotation direction; It consists of a speed increase operation unit 80 that is linked with the power conversion unit 70 to rotate the push fan 34 at a higher rotation speed than the suction fan 32.

In more detail, when the blowing drive unit 30 is described with reference to FIG. 2, a fan network is provided at the inlet 16 of the blowing duct 14 to filter foreign substances in the sucked air, and in front of the fan network is In order to increase the amount of air intake, a suction guide tube 40 is formed in the form of a fallopian tube, and in front of it is a suction spinner 42 that guides the sucked air in the direction of the suction fan 32 and minimizes air resistance. do.

A fan boss 46 is formed in front of the suction spinner 42 to couple the suction fan to the suction fan case 52, a bearing 48 to support the fan boss 46, and the fan boss An overrunning cam flush bearing is inserted into (46) to eliminate the inertia of the suction fan (32) or push fan (34).

A gear unit 31 is mounted on the front end of the suction fan case 52, and a fan boss 56 for mounting the push fan 34 is formed on the front end of the gear unit 31.

In addition, an exhaust spinner 60 is installed at the front of the push fan 34 to cancel out the swirling vortex generated by the discharged air, and is installed at the front of the push fan 34 to increase the wind volume and speed. A push fan case 62 is constructed for this purpose, and an expansion pipe 64 that is adjusted up and down and in the blowing direction is installed at the front end of the push fan case 62.

Additionally, the power conversion unit 70 and the speed increase operation unit 80 will be described with reference to FIGS. 3 and 4.

The power conversion unit 70 includes a driving bevel gear 72 connected to a drive shaft 28 that receives rotational force from the output shaft of the engine; a driven bevel gear (74) engaged perpendicularly to the driving bevel gear (72); A suction blowing shaft 76 is axially coupled to the driven bevel gear 74, extends in the inlet and outlet directions, and is coupled to the suction fan 32; It is connected in the direction of the outlet of the suction blowing shaft 76 and consists of a push blowing shaft 90 to which the push fan 34 is coupled.

In addition, the speed increase operation unit 80 includes a first helical gear 82 coupled to the outer periphery of the suction blowing shaft 76; a counter shaft 84 installed parallel to the suction blowing shaft 76 and the push blowing shaft 90; a second helical gear 86 engaged with the first helical gear 82 and coupled to the outer periphery of the rear end of the counter shaft 84; a third helical gear 88 coupled to the front outer periphery of the counter shaft 84; It is coupled to the front outer periphery of the push blowing shaft 90 and consists of a fourth helical gear 92 meshed with the third helical gear 88.

At this time, the first, second, and fourth helical gears (82, 86, and 92) have the same diameter, and the third helical gear (88) has the same diameter as the first, second, and fourth helical gears (82, 86, and 92). The diameter is configured to be larger, so that the rotation speed of the push blowing shaft 90 is higher than that of the suction blowing shaft 76.

In addition, a bearing 48 is provided between the suction blowing shaft 76 and the push blowing shaft 90 to be disposed and supported on the same axis without transmitting rotational force.

At this time, the unexplained symbol 26 indicates a rotating stand, and 94 and 96 indicate mounting parts where the push fan and suction fan are mounted.

Meanwhile, Figure 5a is a diagram showing the mounting angle of the suction fan 32. Preferably, the mounting angle of the blade 32a of the suction fan 32 based on the center line A is shown in Figure 5b. It is designed to be relatively smaller than the mounting angle of the blade 34a of the push fan 34.

For example, in the present invention, the blade 32a of the suction fan 32 is designed to have a mounting angle of 30 degrees with respect to the center line A, and the mounting angle of the blade 34a of the push fan 34 is 45 degrees. It is designed to have a mounting angle.

Therefore, the suction fan 32 with this mounting angle can maximize the amount of suction wind by increasing the volume between the blades 32a, and the push fan 34 can maximize the amount of sucked wind by reducing the volume between the blades 34a. The contact that pushes out the air can be increased.

The functions and operations of the wide-area spreader according to an embodiment of the present invention having the above-described configuration will be described in detail with reference to the attached drawings.

First, when a user's injection operation signal is input to the wide-area sprayer 2 according to an embodiment of the present invention, the engine 8 is driven to generate rotational force on the engine output shaft.

Then, the rotational force is transmitted to the drive shaft 28 of the gear unit 31 to rotate the driving bevel gear 72, and the driven bevel gear 74 meshed at right angles with the driving bevel gear 72 is It rotates by receiving the rotational force of the driving bevel gear (72).

Through this, the suction blowing shaft 76 axially coupled to the driven bevel gear 74 rotates, thereby rotating the suction fan 32.

At this time, the suction blowing shaft 76 and the push blowing shaft 90 are not directly connected and are configured to rotate freely by the bearing 48, so the rotation of the suction blowing shaft 76 is performed by the push blowing shaft. The rotation of the blower shaft 90 is not involved in coaxial rotation.

In more detail, when the suction blowing shaft 76 rotates, the first helical gear 82 mounted on a certain portion of the outer periphery of the suction blowing shaft 76 rotates, and the first helical gear (82) is rotated. 82) rotates the second helical gear 86, which causes the counter shaft 84 axially coupled to the second helical gear 86 to rotate.

That is, the counter shaft 84 is installed in a parallel state to the suction blowing shaft 76 and the push blowing shaft 90, and the counter shaft 84 rotates in conjunction with the rotation of the suction blowing shaft 76. rotates.

Meanwhile, as a result, the third helical gear 88 formed at the front end of the counter shaft 84 also rotates at the same rotation speed as the second helical gear 86.

At this time, the first, second, and fourth helical gears (82, 86, and 92) have the same diameter, and the third helical gear (88) has the same diameter as the first, second, and fourth helical gears (82, 86, and 92). Since its diameter is larger, the third helical gear 88 allows the meshed fourth helical gear 92 to rotate faster.

Since the fourth helical gear 92 is coupled to the outer periphery of the push blowing shaft 90, the rotation speed of the push blowing shaft 90 is higher than that of the suction blowing shaft 76 or the counter shaft 84. It has a greater rotation speed.

As a result, the push fan 34 coupled to the push blowing shaft 90 can rotate at a faster speed than the suction fan 32.

Therefore, the wide-area sprayer 2 according to an embodiment of the present invention transfers the air sucked through the inlet 16 of the blowing duct 14 to the outlet 18 more quickly and at higher wind pressure to spray it. do.

In particular, this effect is greater during the initial operation of the wide-area spreader 2 according to an embodiment of the present invention because the inertial resistance due to stagnant air in the blowing duct 14 can be quickly overcome.

In addition, the power conversion unit 70 having the above structure allows the suction fan 32 and the push fan 34 to rotate in the same rotation direction due to the counter shaft 84 and the helical gear. , the blowing pressure generated by the suction fan 32 and the push fan 34 within the blowing duct 14 does not collide with and cancel each other, but is added and amplified while rotating in the same direction, resulting in increased blowing efficiency. This is to ensure that it can be maximized.

Meanwhile, the wide-area spreader according to the embodiment of the present invention is not limited to the above-described embodiment, and various changes are possible without departing from the technical gist.

4: loading part, 6: chemical tank,
8: Engine, 10: Spray means,
14: blowing duct, 16: inlet,
18: outlet, 30: eastern vent,
31: gear unit, 32: suction fan,
34: Push fan, 70: Power conversion unit,
72: Driving bevel gear, 74: Driven bevel gear,
76: suction blowing shaft, 80: speed increase operation unit,
82: 1st spur gear, 84: counter shaft,,
86: 2nd spur gear, 88: 3rd spur gear,
90: Push blower shaft, 92: 4th spur gear.

Claims (5)

An engine that generates rotational power, a drug tank containing a drug diluted by mixing a drug solution in water, and a device that receives rotational force from the engine, sucks the drug mixture from the drug tank, and sprays it with blown air to spray the drug. In a wide area spreader equipped with a spray means,
The spraying means is made of a cylindrical shape, and includes a blowing duct 14 having an inlet and an outlet in communication, a gear part 31 mounted inside the rear end of the blowing duct 14, and a front end of the gear part 31. and a push fan (34) and a suction fan (32), which are respectively mounted at the rear end and generate wind pressure in the same wind direction;
The gear unit 31 includes a power conversion unit 70 that converts the rotational power of the engine 8 so that the push fan 34 and the suction fan 32 rotate in the same rotation direction, and the power conversion unit ( It consists of a speed increase operation unit 80 that is linked with 70) to rotate the push fan 34 at a higher rotation speed than the suction fan 32;
The power conversion unit 70 includes a driving bevel gear 72 connected to a drive shaft 28 that receives rotational force from the output shaft of the engine; a driven bevel gear (74) engaged perpendicularly to the driving bevel gear (72); A suction blowing shaft 76 is axially coupled to the driven bevel gear 74, extends in the inlet and outlet directions, and is coupled to the suction fan 32; It is connected in the direction of the outlet of the suction blowing shaft 76 and consists of a push blowing shaft 90 to which the push fan 34 is coupled;
A wide-area spreader, characterized in that a bearing (48) is configured between the suction blowing shaft (76) and the push blowing shaft (90) to be disposed and supported on the same axis without transmitting rotational force. delete According to clause 1,
The speed increase operation unit 80 includes a first spur gear 82 coupled to the outer periphery of the suction blowing shaft 76;
a counter shaft 84 installed parallel to the suction blowing shaft 76 and the push blowing shaft 90;
a second spur gear 86 engaged with the first spur gear 82 and coupled to the outer periphery of the rear end of the counter shaft 84;
a third spur gear (88) coupled to the front outer periphery of the counter shaft (84);
A wide area spreader, characterized in that it is coupled to the front outer periphery of the push blowing shaft (90) and consists of a fourth spur gear (92) meshed with the third spur gear (88). According to clause 3,
The first, second, and fourth spur gears (82, 86, and 92) have the same diameter, and the third spur gear (88) is larger than the first, second, and fourth spur gears (82, 86, and 92). A wide area spreader, characterized in that the diameter is larger and the rotation speed of the push blowing shaft (90) is higher than that of the suction blowing shaft (76). According to clause 1,
The suction fan (32) is a wide-area spreader characterized in that the mounting angle of the blade (32a) with respect to the center line (A) is designed to be relatively smaller than the mounting angle of the blade (34a) of the push fan (34).

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