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KR-102963967-B1 - Apparatus for spraying amount control for granule spreader

KR102963967B1KR 102963967 B1KR102963967 B1KR 102963967B1KR-102963967-B1

Abstract

The present invention relates to a spraying amount control device for a granule sprayer, and more specifically, to a spraying amount control device for a granule sprayer that is positioned at the bottom of a granule hopper and can precisely control the amount of granules sprayed. A spraying amount control device for a granule sprayer according to the present invention is a spraying amount control device that controls the amount of granules sprayed by being placed at the bottom of a granule hopper (500), and comprises: a main body (100) having an inlet pipe (110) formed at the top of one side and an outlet pipe (120) formed at the bottom, and a flow path (130) formed between the inlet pipe (110) and the outlet pipe (120), with a slot (140) formed to communicate with the flow path (130); a gate part (200) installed on one side of the main body (100) to open and close the flow path (130) to discharge or block the granules; and an actuator (300) connected to the gate part (200) to move the gate part (200) in a horizontal direction.

Inventors

  • 신정호
  • 임헌호
  • 김상조

Assignees

  • 농업회사법인 주식회사 디에스에프

Dates

Publication Date
20260513
Application Date
20251110

Claims (8)

  1. In a spraying amount control device that controls the amount of granules sprayed and is positioned at the bottom of a granule hopper (500), A main body (100) having an inlet pipe (110) formed on the upper side and an outlet pipe (120) formed on the lower side, a flow path (130) formed between the inlet pipe (110) and the outlet pipe (120), and a slot (140) formed to communicate with the flow path (130); A gate portion (200) installed on one side of the main body (100) to open or close the flow path (130) in order to discharge or block granules; and It includes an actuator (300) connected to the gate portion (200) and moving the gate portion (200) in a horizontal direction; A guide block (150) is installed on the upper part of the main body (100) and has a guide hole (151) into which the actuator (300) is inserted so as to be linearly movable, and a plurality of numbers are displayed on one side of the upper part of the guide block (150) so as to check the degree of opening of the flow path (130). On the other side of the main body (100), a position adjustment unit (400) is installed to be connected to the actuator (300) and to adjust the position by moving the gate unit (200) and the actuator (300) in a straight line according to manual operation. The above position adjustment unit (400) is installed in the longitudinal direction of the main body (100), and has screw threads formed on its outer surface and is equipped with a knuckle joint (411) at one end for connecting to an actuator (300); A adjusting member (420) coupled to the screw (410) and moving the actuator (300) linearly according to rotation; and It includes a fixing member (430) coupled to the screw (410) to prevent unnecessary rotation of the adjusting member (420); On the other side of the main body (100), a support block (170) in the shape of a concave protrusion is formed so that the screw (410) passes through and is rotatably supported, and the adjusting member (420) is inserted and coupled to the screw (410). A spraying amount control device for a granular sprayer, characterized in that the above-mentioned fixed member (430) is located on the outer surface of the above-mentioned support block (170).
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  3. In claim 1, A spraying amount control device for a granular sprayer, characterized in that a receiving portion (160) is formed protrudingly on one side of the main body (100) to accommodate a control portion (600) including a circuit board (PCB) inside.
  4. In claim 1, The gate portion (200) is fixed inside the slot (140) and has a fixing plate (210) formed with a first through hole (211) corresponding to the flow path (130); A spraying amount control device for a granular sprayer, characterized by including: an opening/closing plate (220) connected to one side of the actuator (300) and moved into the space between the fixed plate (210) and the slot (140), and having a second through hole (221) formed that corresponds to the flow path (130).
  5. In claim 1, A spraying amount control device for a granular sprayer, characterized in that the actuator (300) is one selected from a hydraulic cylinder, an electric cylinder, and a linear motor.
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Description

Apparatus for spraying amount control for granule spreader The present invention relates to a spraying amount control device for a granule sprayer, and more specifically, to a spraying amount control device for a granule sprayer that is positioned at the bottom of a granule hopper and can precisely control the amount of granules sprayed. 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. However, conventional technology involves the inconvenience of requiring the agricultural machinery operator to manually adjust the granular application amount by operating a lever from the driver's seat. Furthermore, since the operator operates the lever arbitrarily to apply the granules, there is a problem in that the granules cannot be applied precisely according to the soil type. In addition, there is a problem where a bottleneck occurs during the process of supplying granules, causing the motor to be overloaded and malfunctions such as stopping operation. An example of a technology for solving the above-mentioned problem is disclosed in the following document 1. Patent Document 1 describes a spreading amount control device for a fertilizer spreader comprising: a frame; a hopper fixedly installed on the frame to receive fertilizer; a spreading fan that sprays fertilizer outwardly through a fertilizer outlet formed on the bottom surface of the hopper; and a spreading amount control plate that selectively opens and closes the fertilizer outlet to control the amount of fertilizer to be sprayed outwardly by the spreading fan. A fertilizer sprayer spraying amount control device is disclosed, characterized by being equipped with: an actuator connected to the spraying amount control plate to control the fertilizer spraying amount; and a control unit that controls the driving of the actuator. In particular, the spray volume control plate in the form of a circular disc rotates by a cylinder that selectively extends in length, thereby adjusting the spray volume according to the position of the fertilizer outlet. However, with the conventional technology described above, the rotational torque increases if fertilizer gets stuck or moisture accumulates in the fertilizer outlet while the spreading control plate is rotating. Additionally, there is a problem in that the edges of the fertilizer outlet become severely worn during prolonged use due to friction with fertilizer particles as the spreading control plate rotates. In addition, there is a disadvantage that precise control is difficult because the fertilizer outlet area changes in a way that causes the outlets to overlap due to the rotation of the disc-shaped spraying volume control plate, resulting in non-linear control of the spraying volume. An example of a technology for solving the above-mentioned problem is disclosed in the following document 2. Patent Document 2 discloses a granule sprayer characterized by comprising: a granule hopper in which granules are stored; a spraying amount control unit disposed at the bottom of the granule hopper to control the amount of granules sprayed; a granule spraying unit rotated by a driving unit to spray granules discharged from the spraying amount control unit to the outside; and a spraying direction control unit to control the spraying range of granules sprayed by the granule spraying unit. In particular, the above-mentioned spraying amount control unit applies a ball valve method having an internal ball for opening and closing the flow path to control the spraying amount of the granules manually or automatically. However, the conventional technology described above has a problem in that granules get stuck between the ball and the flow path of the ball valve, preventing the ball from rotating smoothly, which causes an overload and damages the actuator. In addition, while ball valves are originally designed to ensure high shut-off performance for liquids, there is a problem where granules leak out gradually as they become stuck and complete shut-off becomes impossible. In addition, if moisture accumulates while granules are stuck between the Euro and the ball, the surface of the granules melts and sticks together to form a lump (cake). If this lump hardens in the valve gap, it causes the valve to become completely stuck. The granules hardened by moisture turn into hard pl