KR20020066246A - A cropdusting system for greenhouse - Google Patents

A cropdusting system for greenhouse Download PDF

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Publication number
KR20020066246A
KR20020066246A KR1020010006447A KR20010006447A KR20020066246A KR 20020066246 A KR20020066246 A KR 20020066246A KR 1020010006447 A KR1020010006447 A KR 1020010006447A KR 20010006447 A KR20010006447 A KR 20010006447A KR 20020066246 A KR20020066246 A KR 20020066246A
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KR
South Korea
Prior art keywords
rail
chemical liquid
transfer member
motor
drive shaft
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Application number
KR1020010006447A
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Korean (ko)
Inventor
조도훈
Original Assignee
주식회사 에너텍코리아
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Priority to KR1020010006447A priority Critical patent/KR20020066246A/en
Publication of KR20020066246A publication Critical patent/KR20020066246A/en

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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/14—Greenhouses
    • A01G9/143—Equipment for handling produce in greenhouses
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
    • A01G9/247—Watering arrangements
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
    • A01M7/00—Special adaptations or arrangements of liquid-spraying apparatus for purposes covered by this subclass
    • A01M7/0089—Regulating or controlling systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/25—Greenhouse technology, e.g. cooling systems therefor

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Insects & Arthropods (AREA)
  • Pest Control & Pesticides (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Catching Or Destruction (AREA)

Abstract

PURPOSE: A liquid chemical spray system having a structure for enabling a plurality of transfer members to move by rotation of a drive shaft to uniformly spray liquid chemicals is provided which is simple in construction and low in execution cost. CONSTITUTION: A first and second drive shaft(10,20) is mounted at both ends of a rail(60) formed in a longitudinal direction at the upper part of a vinyl house, a first and second motor(30,31) for providing a turning force is mounted on one side of the first and second drive shaft, and a first and second roller(11,21) is mounted on the first and second drive shaft to move a transfer member(50) with an alternating motion on the rail. A first and second limit switch(13,23) for detecting the position of the transfer member is formed on both sides of the rail, and a control part(80) for receiving the signal of the first and second limit switch and then controlling the drive of the first and second motor is also mounted.

Description

비닐하우스용 약액분사시스템{A cropdusting system for greenhouse}Chemical crop spraying system for green house

본 발명은 비닐하우스용 약액분사시스템에 관한 것으로서, 더욱 상세하게는 두 개의 모터를 이용하여 약액분사노즐을 유동시킴으로써 구조가 간단하고 설치비가 저렴하며 잦은 고장을 줄이고 다수개의 약액분사노즐의 유동속도를 일정하게 하여 비닐하우스내를 고루 분사할 수가 있는 비닐하우스용 약액분사시스템에 관한 것이다.The present invention relates to a chemical liquid injection system for a vinyl house, and more particularly, by using two motors to flow the chemical liquid injection nozzle, the structure is simple, the installation cost is low, frequent failures are reduced, and the flow rates of the plurality of chemical liquid injection nozzles are reduced. The present invention relates to a chemical liquid spraying system for a vinyl house which can be uniformly sprayed inside the vinyl house.

도 5는 일반적인 비닐하우스용 약액분사시스템을 나타낸 개략도이다.Figure 5 is a schematic diagram showing a chemical liquid injection system for a typical vinyl house.

일반적으로 비닐하우스용 약액분사시스템은 비닐하우스 상부에 가로방향으로 다수개의 레일(100)이 형성되고 각각의 레일(100)에 분사노즐 이송부재(200)가 구비되는데, 상기 분사노즐 이송부재(200)내에는 상기 레일(100)상에서 유동가능하도록 모터와 소정 바퀴가 구비되어 있다.In general, the chemical liquid spraying system for a vinyl house has a plurality of rails 100 formed in a horizontal direction on the upper part of the vinyl house, and each of the rails 100 has injection nozzle transfer members 200. The injection nozzle transfer members 200 are provided. ) Is provided with a motor and a predetermined wheel to be able to flow on the rail (100).

상기 분사노즐 이송부재(200) 하부에는 약액을 분사시키는 약액분사노즐(300)이 구비되어 있으며 그 일측에는 상기 약액분사노즐(300)에 약액을 공급하는 약액공급호수(400)가 상기 레일(100)의 길이만큼 구비되며 또한 상기 모터에 전기를 부가하기 위한 전선(500)또한 상기 레일(100)의 길이만큼 구비된다.The lower part of the injection nozzle transfer member 200 is provided with a chemical liquid injection nozzle 300 for injecting a chemical liquid and one side of the rail is provided with a chemical liquid supply lake 400 for supplying a chemical liquid to the chemical liquid injection nozzle 300. ) And a wire 500 for adding electricity to the motor is also provided as the length of the rail (100).

상기와 같이 구성된 일반적인 약액분사시스템은 소정 콤프에 의해 약액이 약액공급호스를 통해 약액분사노즐에 공급되고 또한 모터에 전원이 인가되면 상기 이송부재는 레일위를 이동하면서 약액분사노즐을 통해 약액을 분사하게 된다.In the general chemical liquid injection system configured as described above, when the chemical liquid is supplied to the chemical liquid spray nozzle through the chemical liquid supply hose by a predetermined comp, and the power is applied to the motor, the transfer member moves on the rail and injects the chemical liquid through the chemical liquid spray nozzle. Done.

그러나 일반적으로 각각의 레일에 구비된 이송부재에 모터를 구비하고 각각의 레일에 약액공급호스 및 전선이 연결되어 구조가 복잡하여 잦은 고장이 발생하고, 각 이송부재가 별도의 모터에 의해 구동되므로 상기 이송부재의 속도차에 의해 약액이 고루 분사되지 못하는 문제점이 있었다.However, in general, a motor is provided on a transfer member provided in each rail, and a chemical liquid supply hose and a wire are connected to each rail, which is complicated in structure, and frequent failures occur, and each transfer member is driven by a separate motor. There was a problem that the chemical liquid is not evenly sprayed by the speed difference of the transfer member.

본 발명은 상기의 제반 문제점을 해결하기 위해 안출된 것으로, 본 발명의 목적은 두 개의 모터에 의해 구동축을 회전시켜 다수개의 이송부재를 동시에 유동시켜 약액이 고루 분사되도록 하고 구조가 간단하여 잦은 고장이 없으며 시공비가 저렴한 비닐하우스용 약액분사시스템을 제공함에 있다.The present invention has been made to solve the above problems, an object of the present invention is to rotate the drive shaft by two motors to flow a plurality of transfer members at the same time so that the chemical liquid is evenly injected and the structure is simple and frequent failures It is also to provide a chemical spray system for vinyl houses with low construction cost.

상기의 목적을 달성하기 위한 본 발명의 구성은 비닐하우스 상부에 길이방향으로 형성된 레일과, 상기 레일의 양끝단에 구비되는 제1ㆍ2구동축과, 상기 제1ㆍ2구동축의 일측에 구비되어 회전력을 부가하는 제1ㆍ2모터와, 상기 레일 위를 왕복운동하는 이송부재와, 상기 제1ㆍ2구동축상에 다수개 구비되어 와이어에 의해 상기 이송부재를 유동시키는 제1ㆍ2로울러와, 상기 레일의 양측에 구비되어 상기 이송부재의 위치를 감지하는 제1ㆍ2리미트 스위치와, 상기 제1ㆍ2리미트 스위치의 신호를 수신하여 상기 제1ㆍ2모터의 구동을 제어하는 제어부로 구성되어 이루어지는 것을 특징으로 한다.The configuration of the present invention for achieving the above object is provided with a rail formed in the longitudinal direction on the upper part of the vinyl house, the first and second drive shafts provided at both ends of the rail, and is provided on one side of the first and second drive shafts A first and a second motor for adding the first and second motors, a transfer member reciprocating on the rail, a plurality of first and second rollers provided on the first and second drive shafts to flow the transfer member by a wire, and A first and second limit switches provided on both sides of the rail to sense a position of the transfer member, and a control unit for receiving a signal of the first and second limit switches to control driving of the first and second motors. It is characterized by.

도 1은 본 발명에 따른 비닐하우스용 약액분사시스템을 나타낸 개략도,1 is a schematic view showing a chemical liquid injection system for a vinyl house according to the present invention;

도 2는 본 발명에 따른 비닐하우스용 약액분사시스템의 로울러를 나타낸 사시도,Figure 2 is a perspective view showing the roller of the chemical liquid injection system for a vinyl house according to the present invention,

도 3은 본 발명에 따른 비닐하우스용 약액분사시스템의 이송부재를 나타낸 단면도,3 is a cross-sectional view showing a conveying member of the chemical liquid injection system for a vinyl house according to the present invention;

도 4는 본 발명에 따른 비닐하우스용 약액분사시스템의 이송부재를 나타낸 측면도,Figure 4 is a side view showing a conveying member of the chemical liquid injection system for a vinyl house according to the present invention,

도 5는 일반적인 비닐하우스용 약액분사시스템를 나타낸 개략도.Figure 5 is a schematic diagram showing a chemical liquid injection system for a typical vinyl house.

< 도면의 주요부분에 대한 부호의 설명 ><Description of Symbols for Major Parts of Drawings>

10 : 제1구동축 11 : 제1로울러10: first drive shaft 11: first roller

12, 22 : 베어링 13 : 제1리미트 스위치12, 22: bearing 13: first limit switch

20 : 제2구동축 21 : 제2로울러20: 2nd drive shaft 21: 2nd roller

23 : 제2리미트 스위치 30 : 제1모터23: second limit switch 30: the first motor

31 : 제2모터 40 : 와이어31: second motor 40: wire

50 : 이송부재 51 : 와이어 고정부재50: transfer member 51: wire fixing member

52 : 바퀴 60 : 레일52: wheel 60: rail

61 : 와이어 안내홀 62 : 바퀴 안내부재61: wire guide hole 62: wheel guide member

70 : 약액분사노즐 80 : 제어부70: chemical liquid injection nozzle 80: control unit

이하 첨부된 도면을 참조하여 본 발명의 비닐하우스용 약액분사시스템에 대해 상세히 설명한다.Hereinafter, with reference to the accompanying drawings will be described in detail the chemical liquid injection system for a vinyl house of the present invention.

도 1은 본 발명에 따른 비닐하우스용 약액분사시스템을 나타낸 개략도, 도 2는 본 발명에 따른 비닐하우스용 약액분사시스템의 로울러를 나타낸 사시도, 도 3은 본 발명에 따른 비닐하우스용 약액분사시스템의 이송부재를 나타낸 단면도, 도 4는 본 발명에 따른 비닐하우스용 약액분사시스템의 이송부재를 나타낸 측면도이다.1 is a schematic view showing a chemical liquid injection system for a vinyl house according to the present invention, Figure 2 is a perspective view showing a roller of the chemical liquid injection system for a vinyl house according to the present invention, Figure 3 is a chemical liquid injection system for a vinyl house according to the present invention 4 is a side view showing the transfer member of the chemical liquid injection system for a vinyl house according to the present invention.

상기 도면에 도시된 바와 같이 본 발명은 비닐하우스 상부에 길이방향으로 레일(60)이 구비되고 상기 레일(60)의 양 끝단에 제1ㆍ2구동축(10, 20)을 구비한다.As shown in the drawing, the present invention is provided with a rail 60 in the longitudinal direction on the upper part of the plastic house, and has first and second drive shafts 10 and 20 at both ends of the rail 60.

또한 상기 제1ㆍ2구동측(10, 20)의 일측에 제1ㆍ2모터(30, 31)를 구비하여 전원인가시 상기 제1ㆍ2구동축(10. 20)을 회전시킨다.Further, the first and second motors 30 and 31 are provided on one side of the first and second driving sides 10 and 20 to rotate the first and second driving shafts 10. 20 when the power is applied.

상기 제1ㆍ2구동축(10, 20)에는 다수개의 제1ㆍ2로울러(11, 21)가 소정간격으로 구비되고 상기 레일(60)위에는 양측이 와이어(40)에 의해 고정된 이송부재(50)들이 구비된다.The first and second drive shafts 10 and 20 are provided with a plurality of first and second rollers 11 and 21 at predetermined intervals, and the transfer member 50 having both sides fixed on the rail 60 by wires 40. Are provided.

상기 제1ㆍ2로울러(11, 21)는 상기 제1ㆍ2구동축(10, 20)에 결합시 원웨이(one way) 베어링(12, 22)을 삽입하여 결합한다.When the first and second rollers 11 and 21 are coupled to the first and second driving shafts 10 and 20, one-way bearings 12 and 22 are inserted into and coupled to each other.

한편 상기 레일(60)은 하부에 와이어 안내홀(60)을 구비하여 상기 와이어(40)가 레일(60)에서 이탈이 되지 않도록 하고 상부에는 상기 이송부재(50)들이 이탈이 되지 않도록 레일(60) 양측에 바퀴안내부재(62)가 구비되어 있다.On the other hand, the rail 60 has a wire guide hole 60 at the bottom so that the wire 40 is not separated from the rail 60 and the rail 60 is not separated from the rail 60 at the top. The wheel guide member 62 is provided at both sides.

또한 상기 레일(60)의 양끝단에는 제1ㆍ2리미트 스위치(13, 23)를 구비하여 상기 이송부재(50)들이 상기 레일(60) 위를 이동시 위치를 판별하여 이를 제어부(80)에 전달한다.In addition, first and second limit switches 13 and 23 are provided at both ends of the rail 60 to determine the position when the transfer members 50 move on the rail 60, and transmit the same to the controller 80. do.

상기 제어부(70)는 상기 제1ㆍ2리미트 스위치(13. 23)의 신호를 받아 제1ㆍ2모터(30, 31)의 동작을 제어하도록 한다.The control unit 70 receives the signal of the first and second limit switches 13.23 to control the operation of the first and second motors 30 and 31.

상기와 같이 구성된 본 발명은 전원이 인가되면 제2모터(31)가 작동하여 제2구동축(20)이 구동되면 제2구동축(20)에 결합된 제2로울러(21)들이 회전을 하게 되는데, 레일(60)상에서 와이어(40)에 결합된 이송부재(50)들은 상기 제2로울러(21)가 회전을 하면서 와이어(40)를 귄취하게 되어 상기 이송부재(50)들은 전진을 하게 된다. 이 때, 소정 콤프에서 압축된 약액은 약액공급호스를 지나 상기 이송부재(50)들에 결합되어 있는 약액분사노즐(70)을 통해 분사된다.According to the present invention configured as described above, when the power is applied, the second motor 31 operates, and when the second driving shaft 20 is driven, the second rollers 21 coupled to the second driving shaft 20 rotate. The transfer members 50 coupled to the wires 40 on the rails 60 twist the wires 40 while the second roller 21 rotates so that the transfer members 50 move forward. At this time, the chemical liquid compressed in the predetermined comb is injected through the chemical liquid injection nozzle 70 is coupled to the transfer member 50 through the chemical liquid supply hose.

한편 상기 제2구동축(20)이 제2모터(31)에 의해 회전하는 동안 상기 제1모터(30)와 제1구동축(10)은 정지되어 있으나 상기 제1구동축(10)에 구비된 제1로울러(11)들은 원웨이(one way) 베어링(12)이 삽입되어 있어 정지된 상기 제1구동축(10)상에서 회전을 하며 와이어(40)가 잘 풀리도록 한다.Meanwhile, the first motor 30 and the first driving shaft 10 are stopped while the second driving shaft 20 is rotated by the second motor 31, but the first driving shaft 10 is provided with the first driving shaft 10. The rollers 11 have a one-way bearing 12 inserted therein to rotate on the stationary first drive shaft 10 and allow the wire 40 to be well loosened.

상기 제2모터(31)의 동작으로 전진을 하는 이송부재(50)들이 소정위치에 다다르면 제2리미트 스위치(23)가 이를 감지하여 제어부(80)에 신호를 보내고 상기 제어부(80)는 제2모터(31)의 작동을 중지하고 제1모터(30)를 작동시켜 제1구동축(10)이 동작되고 상기 제1구동축(10)에 구비된 제1로울러(11)들은 회전을 하면서 와이어(40)를 권취하게 되는데 이 때, 상기 이송부재(50)들은 후진을 하게된다.When the transfer members 50 moving forward by the operation of the second motor 31 reach a predetermined position, the second limit switch 23 detects this and sends a signal to the controller 80, and the controller 80 sends a second signal. The first drive shaft 10 is operated by stopping the operation of the motor 31 and operating the first motor 30, and the first rollers 11 provided on the first drive shaft 10 rotate while the wire 40 is rotated. At this time, the transfer member 50 is reversed.

상기 이송부재(50)들이 상기 제1모터(30)에 의해 후진을 하면서 소정위치에 다다르면 제1리미트 스위치(13)는 이를 감지하여 제어부(80)에 신호를 보내고 상기 제어부(80)는 제1ㆍ2모터(30, 31)의 작동을 중지하여 비닐하우스내의 약액분사를 끝내게 된다.When the transfer members 50 reach the predetermined position while reversing by the first motor 30, the first limit switch 13 detects this and sends a signal to the controller 80, and the controller 80 transmits the signal to the first controller 30. ㆍ 2 motors (30, 31) are stopped and the chemical liquid in the plastic house is finished.

한편 상기 이송부재(50)들이 전/후진시 와이어(40)의 인장에 의해 동시에 움직이지 못하고 순위가 가려지게 되는데 이 때 상기 레일(60)을 먼저 지나온 상기 이송부재(50)는 상기 레일(60) 끝단에서 와이어(40)가 소정 인장력으로 부하가 걸리게 되는데 상기 제1ㆍ2로울러(11, 21)내에 삽입된 원웨이(one way)베어링(12, 22)에 의해 상기 와이어(40)에 소정 인장력이상의 부하가 걸리면 상기 제1ㆍ2베어링(11, 21)은 정지하고 상기 제1ㆍ2구동축(10, 20)만 회전하게 되어 와이어(40)의 인장력에 의한 비닐하우스 파손이나 모터의 과부하로 인한 고장을 방지할 수가 있다.On the other hand, the transfer member 50 is not moved at the same time by the tension of the wire 40 when moving forward / backward, the ranking is obscured at this time, the transfer member 50 passing the rail 60 first is the rail 60 At the end, the wire 40 is loaded with a predetermined tensile force, and the wire 40 is fixed to the wire 40 by one-way bearings 12 and 22 inserted into the first and second rollers 11 and 21. When a load equal to or greater than the tensile force is applied, the first and second bearings 11 and 21 are stopped and only the first and second drive shafts 10 and 20 are rotated so that the plastic house may be damaged due to the tension of the wire 40 or the motor may be overloaded. It is possible to prevent the malfunction caused by.

상술한 바와 같이 본 발명은 두 개의 모터로 다수개의 약액분사노즐이 결합된 이송부재를 유동시켜 약액을 분사하고 일반적으로 모터에 전원을 인가하기 위한 전선을 제거하고 약액을 공급하는 약액공급호스만이 이송부재와 유동되어 구조가 간단하며 잦은 고장이 없어 시공비 및 유지비가 적고 다수개의 이송부재를 한 구동축으로 이동시켜 속도차이에 의한 약액살포의 불균형을 방지할 수 있는 효과가 있다.As described above, the present invention injects a chemical liquid by flowing a transfer member coupled to a plurality of chemical liquid injection nozzles with two motors, and in general, only a chemical liquid supply hose for removing a wire for supplying power to a motor and supplying a chemical liquid Since the structure is simple to flow with the conveying member and there is no frequent trouble, there is little construction cost and maintenance cost, and it is effective to prevent the imbalance of chemical liquid spraying due to the speed difference by moving a plurality of conveying members to one drive shaft.

Claims (1)

비닐하우스 상부에 길이방향으로 형성된 레일(60)과, 상기 레일(60)의 양끝단에 구비되는 제1ㆍ2구동축(10, 20)과, 상기 제1ㆍ2구동축(10, 20)의 일측에 구비되어 회전력을 부가하는 제1ㆍ2모터(30, 31)와, 상기 레일(60) 위를 왕복운동하는 이송부재(50)와, 상기 제1ㆍ2구동축(10, 20)상에 다수개 구비되어 와이어(40)에 의해 상기 이송부재(50)를 유동시키는 제1ㆍ2로울러(11, 21)와, 상기 레일(60)의 양측에 구비되어 상기 이송부재(50)의 위치를 감지하는 제1ㆍ2리미트 스위치(13, 23)와, 상기 제1ㆍ2리미트 스위치(13, 23)의 신호를 수신하여 상기 제1ㆍ2모터(30, 31)의 구동을 제어하는 제어부(80)로 구성되어 이루어지는 것을 특징으로 하는 비닐하우스용 약액분사시스템.A rail 60 formed in the longitudinal direction on the upper part of the vinyl house, first and second drive shafts 10 and 20 provided at both ends of the rail 60, and one side of the first and second drive shafts 10 and 20. First and second motors 30 and 31 provided at the upper side, a conveying member 50 reciprocating over the rail 60, and a plurality of the first and second driving shafts 10 and 20. First and second rollers 11 and 21 which are provided to flow the transfer member 50 by a wire 40 and on both sides of the rail 60 to sense the position of the transfer member 50. The control unit 80 which receives the signals of the first and second limit switches 13 and 23 and the first and second limit switches 13 and 23 to control the driving of the first and second motors 30 and 31. Chemical liquid injection system for a vinyl house, characterized in that consisting of.
KR1020010006447A 2001-02-09 2001-02-09 A cropdusting system for greenhouse KR20020066246A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101687362B1 (en) * 2015-09-30 2016-12-19 김재현 Apparatus for cultivating soybean sprout using mineral water
KR102075149B1 (en) 2019-09-03 2020-02-07 농업회사법인 (주)와이에이치산업 Nozzle assembly for spraying pesticide and pesticide spraying apparatus comprising the same
KR102108101B1 (en) 2019-01-14 2020-05-12 농업회사법인 (주)와이에이치산업 Pesticide spraying apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101687362B1 (en) * 2015-09-30 2016-12-19 김재현 Apparatus for cultivating soybean sprout using mineral water
KR102108101B1 (en) 2019-01-14 2020-05-12 농업회사법인 (주)와이에이치산업 Pesticide spraying apparatus
KR20200088200A (en) 2019-01-14 2020-07-22 농업회사법인 (주)와이에이치산업 Pesticide spraying apparatus
KR20200088238A (en) 2019-01-14 2020-07-22 농업회사법인 (주)와이에이치산업 Pesticide spraying apparatus
KR102075149B1 (en) 2019-09-03 2020-02-07 농업회사법인 (주)와이에이치산업 Nozzle assembly for spraying pesticide and pesticide spraying apparatus comprising the same

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