KR910005395Y1 - Control valve for electric spray - Google Patents

Control valve for electric spray Download PDF

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Publication number
KR910005395Y1
KR910005395Y1 KR2019890004463U KR890004463U KR910005395Y1 KR 910005395 Y1 KR910005395 Y1 KR 910005395Y1 KR 2019890004463 U KR2019890004463 U KR 2019890004463U KR 890004463 U KR890004463 U KR 890004463U KR 910005395 Y1 KR910005395 Y1 KR 910005395Y1
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South Korea
Prior art keywords
valve body
hydraulic
spring
chamber
control valve
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KR2019890004463U
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Korean (ko)
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KR900018941U (en
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이창원
강종섭
김경환
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이창원
강종섭
김경환
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Priority to KR2019890004463U priority Critical patent/KR910005395Y1/en
Publication of KR900018941U publication Critical patent/KR900018941U/en
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Publication of KR910005395Y1 publication Critical patent/KR910005395Y1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/0406—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded in the form of balls

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Catching Or Destruction (AREA)

Abstract

내용 없음.No content.

Description

동력분무기의 퇴수 조절밸브Drain control valve of power sprayer

제 1 도는 본 고안의 분해 사시도.1 is an exploded perspective view of the present invention.

제 2 도는 본 고안의 조립 정단면도.2 is a front sectional view of the assembly of the present invention.

제 3 도와 제 4 도는 본 고안의 동작상태를 나타낸 정단면도.3 and 4 is a front sectional view showing an operating state of the present invention.

제 5a, b 도는 본 고안의 동작상태를 나타낸 측단면도.5a, b is a side cross-sectional view showing an operating state of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 밸브몸체 2 : 유입실1: Valve body 2: Inflow chamber

3 : 퇴수로 4 : 밀폐실3: drainage path 4: sealed room

5 : 배출구 6 : 공간부5 outlet 6 space

8 : 유압통로 9 : 배기공8: hydraulic passage 9: exhaust hole

12 : 유압밸브체 12a : 배출공12: hydraulic valve body 12a: discharge hole

12b : 유입공 14 : 작동축12b: inlet hole 14: working shaft

14a : 나사부 14b : 와셔부14a: thread part 14b: washer part

15 : 고정캡 16, 19 : 스프링15: fixing cap 16, 19: spring

17 : 볼밸브체 21 : 압력조절스프링17: ball valve body 21: pressure regulating spring

본 고안은 동력분무기를 이용하여 논이나 밭등에 농약을 뿌려줄때, 분사되지 않는 농약물(퇴수)을 다시 펌프내로 유입되게하는 퇴수 조절밸브에 관한 것으로 특히, 동력분무기의 노즐본체와 펌프사이에 압력차에따라 퇴수구와 배출구가 자동으로 개, 폐되는 밸브를 삽이하여 작업도중 노즐본체의 콕크만 감가주면, 유체가 밸브를 거쳐 다시 펌프로 되돌아가게한 동력분무기의 퇴수조절밸브에 관한 것이다.The present invention relates to a drainage control valve that allows the spraying of pesticides (drainage), which is not sprayed, into the pump when spraying pesticides on rice fields or fields using a power sprayer. In particular, the pressure between the nozzle body of the power sprayer and the pump It relates to a water spray control valve of a power sprayer which inserts a valve that automatically opens and closes the drain and discharge ports depending on the car, and reduces the cock of the nozzle body during operation.

동력 분무기를 이용하여 넓은 논이나 밭등에 농약을 살포할 경우, 종래에는 콕크가 달린 노즐본체의 분무호스를 직접 펌프에 연결하여 농약을 살포하였던 것이다.In the case of spraying pesticides on a wide field or field using a power sprayer, conventionally, the spray hose of the nozzle body with cock was directly connected to a pump to spray pesticides.

따라서 이와같이 살포할 경우 작업도중 잠시 휴식을 취하거나 분사를 멈출경우에는 먼저 펌프의 동작을 중지시킨다음, 노즐 본체의 콕크를 잠가줘야만 함으로서 작업이 매우 번거롭고 둘이상의 인원이 필요하게되며, 반대로 콕크를 먼저 잠가준 뒤 모터를 꺼버리게되면 그 사이에 노즐본체와 호스의 연결부위에 모터의 과부하가 작용하게되어 기기의 손상과함께 각 호스의 연결부위가 빠져벼리게되고, 특히 펌프와 노즐본체의 거리가 멀경우에는 농약손실이 심하였던 것이다.Therefore, in case of spraying like this, if you take a break during the work or stop spraying, first stop the operation of the pump, and you have to lock the cock of the nozzle body, which makes the work very cumbersome and requires more than two personnel. If the motor is turned off first and then the motor is turned off, the overload of the motor acts on the connection part between the nozzle body and the hose, and the connection part of each hose is pulled out with damage to the device, especially the distance between the pump and the nozzle body. In case of far, pesticide loss was severe.

본 고안은 이러한 문제점을 해결하기위하여 노즐본체의 분무호스와 펌프사이에 압력차에따라 배출구와 퇴수구가 자동으로 개, 폐되는 밸브를 설치하여 살포도중 노즐본체의 콕크만 잠가주면 펌프로부터 공급되는 농약물이 퇴수구를 통해 다시 펌프내로 유입되도록 안출한 것으로 첨부된 도면에의거 상세히 설명하면 다음과 같다.In order to solve this problem, the present invention provides a valve that automatically opens and closes the outlet and discharge ports according to the pressure difference between the spray hose of the nozzle body and the pump. When the pesticide is designed to be introduced into the pump through the drainage port, it will be described in detail with reference to the accompanying drawings.

제 1 도는 본 고안의 분해 사시도이고, 제 2 도는 조립단면도로서 이상에서 보는 바와같이 본 고안은 일측으로 리브(1a)가 도출된 밸브몸체(1)의 상단과 그 둘레에 각각 요홈(1b)과 나사부(1c)를 형성하고 중심에는 하단으로부터 상단까지 유입실(2)과 이보다작은 퇴수로(3) 및 밀폐실(4)을 형성하여 유입실(2) 일측에 외부와 관통되도록 배출구(5)와 암나사를 갖는 공간부(6)를 형성하며, 그 경계면의 모서리를 둥글게 형성하고, 공간부(6) 내측과 밀폐된(4) 상측사이에 유압통로(8)를 형성하며, 밀폐실(4)의 하부에는 외부와 관통되게 배기공(9)를 뚫는다.FIG. 1 is an exploded perspective view of the present invention, and FIG. 2 is an assembled sectional view of the present invention. As shown above, the present invention has a groove 1b and a circumference at the top and the circumference of the valve body 1 from which the rib 1a is drawn to one side, respectively. The outlet portion 5 is formed so that the threaded portion 1c is formed and the inlet chamber 2, the smaller discharge passage 3, and the closed chamber 4 are formed at the center from the lower end to the upper end thereof so as to penetrate the outside on one side of the inlet chamber 2. And a space part 6 having a female screw, a corner of the boundary surface is rounded, a hydraulic passage 8 is formed between the inside of the space part 6 and the upper side of the sealed part 4, and the sealed chamber 4 In the lower part of the exhaust hole 9 to be penetrated to the outside.

그리고 펌프(P)와 연결되는 고정판(10)에는 중심의 급수구(10a) 상단에 단턱(10b)을 형성하여 스프링(16)과 볼밸브체(17)를 탄착시킨다음 유입실(2) 하단에 나사결합하여 볼밸브체(17)가 퇴수로(3) 하단에 탄접되게하고, 노즐본체(N)의 분무호스(H)가 연결되는 육각형의 호스연결구(11)에는 중심의 배수구(11a)에 단턱(11b)을 형성하여 여기에 선단에 0 - 링(18)이 끼워지며, 배출공(12a) 둘레에 사방으로 유입공(12b)이 뚫린 유압밸브체(12)를 스프링(19)과 함께 삽입한후, 이를 유압통로(8)가 차단되지 않도록 공간부(6)에 나사결합하여 0 - 링(18)이 배출구(5)의 둥근 모서리부분과 탄접되게하며, 반대쪽의 퇴수구(7)에는 톱니형상의 호스연결구(13)를 결합한다.In addition, the fixing plate 10 connected to the pump P forms a step 10b at the top of the water supply port 10a at the center thereof, thereby adhering the spring 16 and the ball valve body 17 to the bottom of the inflow chamber 2. Screwed into the ball valve body (17) in contact with the bottom of the water discharge path (3), the hexagonal hose connector (11) to which the spray hose (H) of the nozzle body (N) is connected to the center drain (11a) A stepped 11b is formed at the end thereof, and a 0-ring 18 is fitted at the front end thereof, and the hydraulic valve body 12 having the inlet hole 12b drilled in all directions around the discharge hole 12a is connected with the spring 19. After inserting together, it is screwed into the space 6 so that the hydraulic passage 8 is not blocked so that the 0-ring 18 is in contact with the rounded edge of the outlet 5, and the opposite outlet 7 ) Is coupled to the toothed hose connector (13).

또한, 상단에 고정부(15a)와 육각형의 조임부(15b)가 일체로 형성된 고정캡(15)에는 고정부(15a) 양측면을 상, 하로 절개시켜 안내홈(15d)을 형성하고, 상측의 나사부(14a)와 선단부(14c) 사이에 핀구멍(14d)과 수개의 요홈이 형성되도록 와셔부(14b)를 형성시킨 작동축(14)에는 와셔부(14b)의 각 요홈에 수개의 0 - 링(20)을 끼워 고정캡(15)의 삽입공(15c)에 삽입한후 핀구멍(14d)에 고정핀(22)을 끼워 안내홈(15d)에 위치시킨다음 조임부(15b)상측에 압력조절스프링(21)을 탄착하여 와셔(23)와 너트(24)를 체결한후, 작동축(14)의 선단부(14c)가 밀폐실(4)과 퇴수로(3)을 통하여 볼밸브체(17)의 상단과 접하도록 고정캡(15)을 밸브몸체(1)의 나사부(1c)에 결합하고, 고정캡(15) 상단에 뚜껑(25)을 씌워 압력조절스프링(21) 부위로 이물질이 유입되지 않도록 한다.In addition, the fixing cap 15 formed at the top of the fixing portion 15a and the hexagonal tightening portion 15b are integrally cut in both side surfaces of the fixing portion 15a to form a guide groove 15d. In the working shaft 14 in which the washer portion 14b is formed such that the pin hole 14d and several grooves are formed between the screw portion 14a and the tip portion 14c, several grooves of each of the washer portions 14b are formed. Insert the ring 20 into the insertion hole 15c of the fixing cap 15, insert the fixing pin 22 into the pin hole 14d, and place it in the guide groove 15d. After the pressure regulating spring 21 is attached and the washer 23 and the nut 24 are fastened, the distal end portion 14c of the operating shaft 14 passes through the airtight chamber 4 and the discharge path 3 through the ball valve body. The fixing cap 15 is coupled to the threaded portion 1c of the valve body 1 so as to be in contact with the upper end of the valve 17, and the cap 25 is attached to the upper portion of the fixing cap 15 so that the foreign substance is inserted into the pressure control spring 21. Do not inflow.

미설명부호 26,27은 패킹이고, 28,29는 0 - 링이다.Reference numeral 26,27 is a packing and 28,29 is a 0-ring.

상기와 같이 구성된 본 고안은 제 2 도와 같이 평상시에 유입실(2)내의 볼밸브체(17)와 공간부(6)내의 유압밸브체(12)가 스프링(16)(19)의 탄성력에의해 각각 퇴수로(3) 및 배출구(5)를 차단하게되며, 작동축(14)에 끼워진 고정편(22)은 안내홈(15d)의 저면으로부터 약간 상측에 위치해 있게된다.In the present invention configured as described above, the ball valve body 17 in the inflow chamber 2 and the hydraulic valve body 12 in the space 6 are normally driven by the elastic force of the springs 16 and 19 as in the second diagram. Each of the water discharge passage 3 and the discharge port 5 is blocked, and the fixing piece 22 fitted to the operation shaft 14 is located slightly above the bottom of the guide groove 15d.

이상태에서 제 3 도와 같이 밸브몸체(1)의 고정판(10) 하단에 펌프(9)를 결합하고, 일측에 호스연결구(11)에 콕크(c)가 달린 노즐본체(N)의 분무호스(H)를 연결한후, 타측의 호스연결구(13)에 또다른 호스(H')를 연결하여 그 끝단을 펌프(P)의 물탱크에 연결한다음, 상기 펌프(P)를 작동시키면, 유입실(2)로 유입되는 농약물이 펌프(P)의 수입에 의해 유압밸브체(12)를 밀게된다.In this state, the pump 9 is coupled to the lower end of the fixed plate 10 of the valve body 1 as shown in the third diagram, and the spray hose H of the nozzle body N having a cock c on one side of the hose connector 11. ) And then connect another hose (H ') to the hose connector (13) of the other side and connect its end to the water tank of the pump (P), and then operate the pump (P), The pesticide flowing into (2) pushes the hydraulic valve body 12 by the import of the pump P. FIG.

따라서, 스프링(19)이 압축되면서 유압밸브체(12)가 후진하여 배출구(5)가 열리게 되고 볼밸브체(17)는 제 5a 도와 같이 퇴수로(3)를 차단한채 그대로 있게됨으로서 펌프(P)로부터 공급된 농약물이 유입실(2)내에서 배출구(5)를 통해 유압밸브체(12)의 유입공(12b) 및 배출공(12a)으로 들어와 호스연결구(11)의 배수구(11a)와 분무호스(H) 및 노즐본체(N)를 통해 분사됨으로서 농약살포작업을 할수 있게된다.Accordingly, as the spring 19 is compressed, the hydraulic valve body 12 reverses and the outlet 5 is opened, and the ball valve body 17 remains as it is while keeping the water discharge passage 3 blocked as shown in FIG. 5A. Agrochemicals supplied from) enter the inlet 12b and the outlet 12a of the hydraulic valve body 12 through the outlet 5 in the inlet chamber 2, and drain 11a of the hose connector 11 And sprayed through the spray hose (H) and the nozzle body (N) it is possible to spray pesticides.

이와같은 상태에서 작업을 중단하거나 잠시 휴식을 취하기 위하여 작업자가 제 4 도와 같이 노즐본체(N)의 콕크(c)를 잠가주게 되면, 분무호스(H)를 통해 빠져나가던 농약물이 공간부(6)와 유압통로(8)를 통해 밀폐실(4)상측으로 유입됨으로서 작동축(14)의 와셔부(14b) 상단에는 순간적으로 과압이 작용하게 되어 압력 조절스프링(21)이 압축되면서 작동축(14)이 하강하게되고, 이로인해 작동축(14)의 선단부(14c)가 볼밸브체(17)를 밀게됨으로서 스프링(16)이 압축되면서 볼밸브체(17)가 하강하여 퇴수로(3)가 열리게된다.When the worker locks the cock (c) of the nozzle body (N) as shown in FIG. 4 in order to stop work or take a break in such a state, the pesticide that escaped through the spray hose (H) is space part (6). ) And the hydraulic passage (8) flows into the closed chamber (4) above the upper part of the washer portion (14b) of the operating shaft (14) is instantaneously over-pressure acting as the pressure adjusting spring (21) is compressed to the operating shaft ( 14 is lowered, and thus the tip portion 14c of the operating shaft 14 pushes the ball valve body 17 so that the spring 16 is compressed and the ball valve body 17 is lowered to discharge the water discharge path 3. Will be opened.

이때, 작동축(14)에 끼워진 고정핀(22)은 작동축(14)과 함께 안내홈(15d)을 따라 하강하면서 작동축(14)의 승,하강폭을 조절하게되며, 작동축(14)이 하강하는동안 밀폐실(4) 내부에 차있던 공기는 제 5b 도와 같이 배기공(9)를 통해 빠져나가게 된다.At this time, the fixing pin 22 fitted to the operating shaft 14 adjusts the rising and lowering width of the operating shaft 14 while descending along the guide groove 15d together with the operating shaft 14, the operating shaft 14 The air filled inside the sealed chamber 4 during the lowering of the c) is discharged through the exhaust hole 9 as shown in FIG. 5b.

따라서, 이때는 펌프(P)로부터 공급된 농약물(퇴수)이 유입실(2)내에서 퇴수로(3)와 퇴수구(7)를 통해 호스(H')로 빠져나간 뒤 다시 펌프(P)의 물탱크로 유입되는 동작을 반복하게된다.Therefore, at this time, the pesticide (water discharge) supplied from the pump P exits the hose H 'through the water discharge passage 3 and the water discharge opening 7 in the inflow chamber 2, and then pumps P again. It will repeat the operation flowing into the water tank.

이상에서와같이 본 고안은 동력분무기를 이용하여 논이나 밭등에 농약을 살포할 경우, 노즐본체(N)의 분무호스(H)와 펌프(P)사이에 수압에 따라 퇴수로(3)와 배출구(5)가 자동으로 개, 폐되는 밸브몸체(1)를 설치하여 작업시에는 펌프(P)로부터 공급된 농약물이 배출구(5)를 통해 외부로 분사되고, 콕크(c)를 잠그면, 배출구(5)가 닫히면서 퇴수로(3)가 자동으로 열려 펌프(P)로 부터 공급되는 농약물이 다시 펌프(P)로 되돌아가는 순환을 반복하게 됨으로서 작업자와 펌프(P)의 거리에 관계없이 혼자서도 살포작업을 손쉽게 수행할수있고, 농약물의 손실을 방지할수 있을뿐만 아니라 작업도중 갑자기 콕크(c)를 잠그더라도 밸브몸체(1)나 펌프(P) 및 호스(H)(H')의 연결부위등에 충격이 가해지지않아 각종기기의 수명연장에도 기여할수 있는 효과가 있는 것이다.As described above, the present invention, when spraying pesticides on rice fields or fields using a power sprayer, between the discharge hose (3) and the discharge port according to the water pressure between the spray hose (H) and the pump (P) of the nozzle body (N) When the valve body 1 is automatically installed and closed, the pesticide supplied from the pump P is sprayed to the outside through the outlet 5, and the cock c is locked. (5) is closed and the retreading path (3) is automatically opened to repeat the circulation of the pesticide supplied from the pump (P) back to the pump (P), regardless of the distance between the operator and the pump (P) It is easy to carry out the spraying work by itself, and it can prevent the loss of pesticides, and even if the cock (c) is suddenly shut off during operation, the connection part of the valve body (1) or the pump (P) and the hose (H) (H ') There is an effect that can contribute to the extension of the life of various equipment because it is not applied to the back.

Claims (4)

동력 분무기의 분무호스(H)와 펌프(P) 사이에 설치하는 밸브를 형성함에 있어서, 저면으로부터 유입실(2)과 이보다 작은 퇴수로(3) 및 밀폐실(4)이 형성된 밸브 몸체(1)의 유입실(2) 일측에 외부와 관통되도록 배출구(5)와 공간부(6)를 형성하여 상기 밀폐실(4)과 유압통로(8)를 관통시킴과 동시 밀폐실(4)의 하측에는 외부와 연통하는 배기공(9)을 뚫어 설치하며, 유압실(2) 하단에 결합되는 고정판(10)과 퇴수로(3) 사이에 스프링(16)과 함께 볼밸브체(17)를 탄설하며, 공간부(6)에 결합되는 호스연결구(11)와 배출구(5) 사이에 중심의 배출공(12a)과 관통되게 수개의 유입공(12b)이 뚫린 유압밸브체(12)를 스프링(19)가 함께 탄설하고, 밀폐실(4) 상단에 결합되는 고정캡(15) 중심에는 상기 밀폐실(4)을 완전 차단하도록 와셔부(14b)가 형성된 작동축(14)을 삽입하며, 작동축(14)의 선단부(14c)가 볼밸브체(17)와 접하도록 상측으로 돌출된 부위에 압력 조절스프링(21)을 설치하여 노즐본체(N)의 콕크(c) 조절로 인한 볼밸브체(17)와 유압밸브체(12)가 스프링(16)(19) 및 작동축(14)의 승, 하강에 따라 퇴수로(3) 및 배출구(5)를 자동으로 개, 폐 하도록 구성한 것을 특징으로 하는 동력 분무기의 퇴수조절밸브.In forming a valve installed between the spray hose (H) and the pump (P) of the power sprayer, the valve body (1) formed with an inflow chamber (2), a smaller discharge passage (3) and a sealed chamber (4) from the bottom surface thereof. The outlet port 5 and the space part 6 are formed in one side of the inflow chamber 2 so as to penetrate the outside and penetrate the sealed chamber 4 and the hydraulic passage 8 and at the same time the lower side of the sealed chamber 4. It installs through the exhaust hole (9) communicating with the outside, the ball valve body 17 together with the spring 16 between the fixed plate 10 and the water discharge passage (3) coupled to the lower end of the hydraulic chamber (2) The hydraulic valve body 12 in which several inlet holes 12b are penetrated between the hose connector 11 and the outlet port 5 coupled to the space portion 6 and the center outlet hole 12a is spring-opened. 19) and the operation shaft 14, which was formed with a washer portion 14b to completely block the sealed chamber 4, is inserted into the center of the fixed cap 15 coupled to the top of the sealed chamber 4, Of shaft 14 The pressure adjusting spring 21 is installed at a portion where the tip portion 14c protrudes upward so as to contact the ball valve body 17, and the ball valve body 17 and the hydraulic pressure are adjusted by adjusting the cock c of the nozzle body N. The valve body 12 is configured to automatically open and close the water discharge passage 3 and the outlet 5 as the spring 16, 19 and the operating shaft 14 rises and falls. Intake control valve. 제 1 항에 있어서, 유압밸브체(12)의 유입공(12b)을 그 측면에 뚫어 공간부(6) 및 유압통로(8)와 통하게 구성한 것을 특징으로 하는 동력 분무기의 퇴수 조절밸브.2. The discharge control valve of the power sprayer according to claim 1, wherein the inlet hole (12b) of the hydraulic valve body (12) is drilled in a side surface thereof so as to communicate with the space (6) and the hydraulic passage (8). 제 1 항에 있어서, 고정캡(15) 상단에 고정부(15a)와 조입부(15b)를 일체로 형성하여 고정부(15a) 측면에 상, 하로 길게 안내홈(15d)을 형성하고, 이 안내홈(15d)에 작동축(14)을 관통하도록 고정핀(22)을 끼워 작동축(14)의 승 하강폭을 제어하도록 구성한 것을 특징으로 하는 동력분무기의 퇴수 조절밸브.The method of claim 1, wherein the fixing portion 15a and the inserting portion 15b are integrally formed at the upper end of the fixing cap 15 to form guide grooves 15d extending upward and downward on the side of the fixing portion 15a. A discharge spray control valve of a power sprayer, characterized in that the guide groove (15d) is inserted into the fixing pin (22) to penetrate the operating shaft (14) to control the raising and lowering width of the operating shaft (14). 제 1 항에 있어서, 유압밸브체(12) 선단의 0 - 링(18)과 접하는 배출구(5) 및 공간부(6)의 모서리 부위를 둥글게 형성한 것을 특징으로 하는 동력 분무기의 퇴수조절 밸브.2. The discharge control valve of the power sprayer according to claim 1, wherein a corner portion of the outlet port (5) and the space part (6) contacting the 0-ring (18) at the tip of the hydraulic valve element (12) is rounded.
KR2019890004463U 1989-04-11 1989-04-11 Control valve for electric spray KR910005395Y1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100951323B1 (en) * 2010-01-07 2010-04-05 박종민 Powder suction device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100951323B1 (en) * 2010-01-07 2010-04-05 박종민 Powder suction device

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