KR-102963312-B1 - Impeller for granule spreader

Abstract

The present invention relates to an impeller for a granule spreader, and more specifically, to an impeller for a granule spreader that is connected to a motor of the granule spreader and rotates to spread granules widely and uniformly. The impeller for a granule sprayer according to the present invention is an impeller for a granule sprayer that is rotated by a motor (400) to spray granules to the outside, and is characterized by comprising: a disc (100) in the shape of a disc; a shaft connector (200) formed protruding from the center of the disc (100) and coupled to the rotation shaft of the motor (400); and a plurality of blades (300) arranged at equal intervals along the circumferential direction on one surface of the disc (100).

Inventors

• 신정호
• 임헌호
• 김상조

Assignees

• 농업회사법인 주식회사 디에스에프

Dates

Publication Date

20260512

Application Date

20250707

Claims (8)

1. In an impeller for a granule sprayer that is rotated by a motor (400) and sprays granules to the outside, A disc-shaped disk (100); A shaft connector (200) formed protruding from the center of the above disk (100) and coupled to the rotation axis of the motor (400); and It includes a plurality of wings (300) arranged at equal intervals along the circumferential direction on one surface of the above disk (100), and The above wing (300) has a discharge guide section (310) in which a granular discharge channel (311) is formed on the inner side with a curved shape having a predetermined curvature; A cover portion (320) that is horizontally folded and extended from the top of the discharge guide portion (310); A leading edge portion (330) in which the end of the cover portion (320) adjacent to the inner end of the discharge guide portion (310) is formed as a pointed curved surface; and It includes a trailing edge portion (340) extending between the outer end of the discharge guide portion (310) and the outer end of the cover portion (320); The above leading edge portion (330) has a smaller area as it approaches the end and forms a downward slope, and can connect the cover portion (320) adjacent to the discharge guide portion (310), and A round portion (350) is formed at the part where the inner end of the cover portion (320) and the leading edge portion (330) come into contact with each other. An impeller for a granular spreader, characterized in that the trailing edge portion (340) is formed to match the circumference of the disk (100).
2. In claim 1, An impeller for a granular sprayer characterized by having four blades (300) above.
3. In claim 1, An impeller for a granular sprayer, characterized in that the discharge angle of the above-mentioned wing (300) is formed at an angle of 40 to 55° relative to the center of the disk (100).
4. delete
5. In claim 1, An impeller for a granular sprayer characterized by the radius of curvature of the discharge guide (310) being 20 to 80 mm.
6. In claim 1, An impeller for a granular sprayer, characterized in that the thickness of the discharge guide portion (310) is formed to be thicker than the thickness of the cover portion (320).
7. delete
8. delete

Description

Impeller for granule spreader The present invention relates to an impeller for a granule spreader, and more specifically, to an impeller for a granule spreader that is connected to a motor of the granule spreader and rotates to spread granules widely and uniformly. In general, when spraying pesticides on crops in rural areas, granular spreaders are attached to various agricultural machinery, including tractors and cultivators. A granular sprayer connected to agricultural machinery utilizes the power of the machinery, allowing it to carry a large amount of granular pesticide and maintain a wide spraying area, as well as providing the advantage of spraying pesticides without much effort. Granular spreaders currently on the market are manufactured with various structures, adopting methods such as a spraying method using compressed air, a scattering method using centrifugal force from the rotation of an impeller, or a falling method using the rotation of a shaft with discharge blades. An example of such technology is disclosed in the following documents 1 and 2. Patent Document 1 discloses a granular fertilizer spreader in which a hopper-type fertilizer storage container, in which a filter plate made of a perforated plate is embedded, is fixed by fitting it into the hopper-type support member formed vertically on one side of a support plate and fixing it so that the discharge port faces downward; a guide plate is installed at the bottom of the discharge port, with an opening formed around it to allow adjustment of the spraying direction by screwing a rotating spraying plate onto the rotating shaft of a DC motor installed on the bottom surface of the support plate; a connecting plate connected to an installation rod is formed on the side of the support member and a regulator for adjusting the rotational speed of the DC motor is installed on the connecting plate; and an auxiliary force bar is connected between the hopper-type support member and the installation rod so that the installation rod can be connected to a cultivator or tractor for use. Patent Document 2 discloses a spreading device installed in a fertilizer spreader for a tractor, comprising a rotating plate that rotates by power from a driving unit and a rotating blade unit installed along the circumferential surface of the rotating plate and scattering fertilizer dropped onto the rotating plate to the outside, wherein the rotating blade unit is composed of first and second rotating blades manufactured with different lengths; and wherein multiple first and second rotating blades are installed alternately along the upper circumferential surface of the rotating plate. However, the conventional technology described above has the problem of failing to widely and uniformly disperse granules around a rotary spraying plate equipped to spray granules by arranging multiple radial wings on a reference surface having the shape of a disc, which ultimately reduces the efficiency of the spraying operation. FIG. 1 is a drawing illustrating the usage state of an impeller for a granular sprayer according to the present invention. FIG. 2 is a perspective view illustrating an impeller for a granular sprayer according to the present invention. FIG. 3 is a plan view illustrating an impeller for a granular sprayer according to the present invention. FIG. 4 is a cross-sectional view illustrating an impeller for a granular sprayer according to the present invention. FIG. 5 is a photograph illustrating a spraying experiment between an impeller for a granular sprayer according to the present invention and a conventional impeller. Hereinafter, the most preferred embodiment of the present invention is described in detail so that a person skilled in the art to which the present invention pertains can easily practice the present invention. As illustrated in FIGS. 1 to 4, the impeller for a granule sprayer according to the present invention is rotated by a motor (400) to spray granules outward and includes a disk (100), a shaft connector (200), and a blade (300). The material is made of a durable metal or synthetic resin and has properties that are resistant to corrosion or wear. The above disk (100) is formed in the shape of a disc and is made of metal or synthetic resin material. An axle connector (200) to which the rotation axis of the motor (400) is coupled is formed in the center of the above disk (100). That is, the above disk (100) is coupled to a rotating shaft that rotates with the power of a motor (400), receives power from the motor and rotates, applies centrifugal force to the falling particles, and rotates the wings (300) arranged in multiple numbers at high speed. The shaft connector (200) is formed protruding from the center of the disk (100) and is coupled to the rotation axis of the motor (400). The shaft connector (200) is coupled to the rotation shaft of a motor (400) that provides power to rotate the impeller, and is formed protruding from the center of the disk