KR200204310Y1 - Electromotion butterfly valve - Google Patents
Electromotion butterfly valve Download PDFInfo
- Publication number
- KR200204310Y1 KR200204310Y1 KR2020000018743U KR20000018743U KR200204310Y1 KR 200204310 Y1 KR200204310 Y1 KR 200204310Y1 KR 2020000018743 U KR2020000018743 U KR 2020000018743U KR 20000018743 U KR20000018743 U KR 20000018743U KR 200204310 Y1 KR200204310 Y1 KR 200204310Y1
- Authority
- KR
- South Korea
- Prior art keywords
- motor
- valve
- butterfly valve
- gear motor
- cam
- Prior art date
Links
Classifications
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/221—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves specially adapted operating means therefor
-
- 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
- F16K27/0218—Butterfly valves
-
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/046—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor with electric means, e.g. electric switches, to control the motor or to control a clutch between the valve and the motor
-
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/52—Mechanical actuating means with crank, eccentric, or cam
- F16K31/524—Mechanical actuating means with crank, eccentric, or cam with a cam
- F16K31/52408—Mechanical actuating means with crank, eccentric, or cam with a cam comprising a lift valve
-
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
- F16K31/535—Mechanical actuating means with toothed gearing for rotating valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
본 고안은 버터플라이밸브의 상부에 기어들이 조합된 기어모터를 설치하고 이 기어모터의 모터축과 버터플라이밸브의 회전축을 캠으로 연결한 뒤 캠에 의해 제어되는 리미트스위치로 모터의 회전이 콘트롤되도록 함으로써, 구성이 간소화 되고 또한 기어모터를 버터플라이밸브에서 분리하기 편리함으로 고장수리를 신속하게 할수 있는 전동 버터플라이밸브에 관한 것으로서, 특히 유로를 개폐하는 밸브판을 갖는 밸브몸체가 구비되고, 밸브판의 회전축을 자동으로 회전시키는 기어모터가 구비된 전동 버터플라이밸브에 있어서, 기어모터의 모터축과 회전축을 연결하는 캠이 구비되고, 캠의 외주면에는 다단으로 돌기가 형성되며, 돌기들에 의해 온/오프되면서 기어모터의 회전을 제어하여 밸브몸체의 유로를 개폐하는 리미트스위치가 구비되도록 구성되어 있다.The present invention installs a gear motor with gears on top of the butterfly valve, connects the motor shaft of the gear motor and the rotation shaft of the butterfly valve with a cam, and controls the rotation of the motor with a limit switch controlled by the cam. The present invention relates to an electric butterfly valve which simplifies the configuration and facilitates troubleshooting by quickly removing the gear motor from the butterfly valve. In particular, a valve body having a valve plate for opening and closing a flow path is provided. In the electric butterfly valve equipped with a gear motor for automatically rotating the rotary shaft of the motor, a cam connecting the motor shaft and the rotary shaft of the gear motor is provided, the outer peripheral surface of the cam is formed with a multi-stage projection, the projections are turned on It is designed to be equipped with a limit switch for opening and closing the flow path of the valve body by controlling the rotation of the gear motor while turning on / off. It is made.
Description
본 고안은 전동 버터플라이밸브에 관한 것으로서, 더욱 상세하게는 기어모터의 모터축과 버터플라이밸브의 회전축을 캠으로 연결하고 캠의 외주면에 형성된 돌기들에 의해 리미트스위치가 제어되도록 함으로써, 이 스위치들에 의해 기어모터의 회전이 콘트롤되면서 버터플라이밸브가 개폐됨으로 구성이 간소화되고 또한 모터의 고장 수리시 모터를 버터플라이밸브로부터 분리시키기 편리한 전동 버터플라이밸브에 관한 것이다.The present invention relates to an electric butterfly valve, and more particularly, by connecting the motor shaft of the gear motor and the rotating shaft of the butterfly valve with a cam and limit switches are controlled by protrusions formed on the outer peripheral surface of the cam, By controlling the rotation of the gear motor by the butterfly valve opens and closes the configuration is simplified and also relates to an electric butterfly valve convenient to separate the motor from the butterfly valve in the event of motor failure repair.
일반적으로 버터플라이밸브는 수동조작레버가 구비된 것이 대부분으로 이러한 밸브는 온수배관용 또는 직경이 작은 파이프의 개폐에 사용된다. 이러한 수동조작밸브를 자동으로 개폐하여 온수의 흐름을 필요에 따라 편리하게 제어하기 위한 고안들이 많이 제안된바 있다. 그중 에서 국내 실용신안공보 공개번호 제98-20262호에 솔레노이드를 이용한 자동개폐장치가 개시된 바 있다.In general, the butterfly valve is equipped with a manual operation lever, most of these valves are used for hot water piping or opening and closing of small diameter pipe. Many designs have been proposed for automatically opening and closing such manual control valves to conveniently control the flow of hot water as needed. Among them, the automatic switching device using a solenoid has been disclosed in Korean Utility Model Publication No. 98-20262.
이는 밸브의 회전축을 솔레노이드와 연결시켜 솔레노이드의 직선운동이 회전운동으로 변하도록 하여 밸브를 개폐한 것이나, 솔레노이드는 그 특성상 직선운동이 빠르게 이루어지기 때문에 그 충격으로 밸브의 피로가 심해져 패킹이 마모되고 누수의 위험성이 있었다. 또한 솔레노이드는 빠르게 움직이기 때문에 동작소음이 심한 등의 단점이 있었다.This is to open and close the valve by connecting the axis of rotation of the valve with the solenoid so that the linear motion of the solenoid is changed to the rotational motion.Because the solenoid has a linear motion quickly due to its characteristics, the fatigue of the valve increases due to the shock and the packing wears and leaks. There was a risk. In addition, since the solenoid moves quickly, there were disadvantages such as high noise.
국내 특허 등록 제198098호에는 모터를 이용한 밸브가 개시된 바 있다. 이는 모터와 연결된 다수개의 기어군들을 통해 밸브판이 회전되도록 구성된 것이나, 기어군들이 밸브 내부에 내장되기 때문에 밸브를 제작하기 어려우며 또한 기어들이 고장났을 때 이를 수리하기 위해 모터와 기어들을 분리하기 어려운 등의 단점이 있었다.Korean Patent Registration No. 198098 discloses a valve using a motor. This is because the valve plate is rotated through a plurality of gear groups connected to the motor, but because the gear groups are embedded in the valve, it is difficult to manufacture the valve and it is difficult to separate the motor and gears to repair the gear when the gear fails. There was a downside.
본 고안은 종래의 문제점을 감안하여 개발한 것으로서, 본 고안의 목적은 버터플라이밸브의 상부에 기어들이 조합된 기어모터를 설치하고 이 기어모터의 모터축과 버터플라이밸브의 회전축을 캠으로 연결한 뒤 캠에 의해 제어되는 리미트스위치로 모터의 회전이 콘트롤되도록 함으로써, 구성이 간소화 되고 또한 기어모터를 버터플라이밸브에서 분리하기 편리함으로 고장수리를 신속하게 할수 있는 전동 버터플라이밸브를 제공함에 있다.The present invention was developed in view of the conventional problems, and an object of the present invention is to install a gear motor in which gears are combined on an upper portion of a butterfly valve, and connect the motor shaft of the gear motor and the rotary shaft of the butterfly valve with a cam. By controlling the rotation of the motor by a limit switch controlled by the rear cam, it is possible to simplify the configuration and provide an electric butterfly valve that can quickly troubleshoot the gear motor by removing it from the butterfly valve.
도 1은 본 고안 전동 버터플라이밸브의 분리 사시도1 is an exploded perspective view of the present invention electric butterfly valve
도 2a,b는 본 고안 전동 버터플라이밸브의 개폐상태를 나타낸 단면도Figure 2a, b is a cross-sectional view showing the opening and closing state of the present invention electric butterfly valve
도 3은 본 고안 전동 버터플라이밸브의 수동조작상태를 나타낸 단면도3 is a cross-sectional view showing a manual operation state of the present invention electric butterfly valve
도 4는 본 고안 전동 버터플라이밸브의 회로도4 is a circuit diagram of the present invention electric butterfly valve
도 5는 본 고안 전동 버터플라이밸브의 사용상태를 나타낸 개략도5 is a schematic view showing a state of use of the present invention electric butterfly valve
<도면의 주요부분에 대한 부호설명><Code Description of Main Parts of Drawing>
1 : 방1: room
2 : 분배기2: divider
3 : 콘트롤러3: controller
10 : 밸브몸체10: valve body
11 : 유로11: Euro
12 : 밸브판12: valve plate
14 : 회전축14: axis of rotation
15 : 체결구15: fastener
20 : 기어모터20: gear motor
21 : 모터축21: motor shaft
22 : 캠22: cam
23 : 돌기23: turning
24 : 리미트스위치24: limit switch
25 : 모터케이스25: motor case
26 : 체결구26: fastener
30 : 손잡이30: handle
상기 목적을 달성하기 위하여 본 고안은 유로를 개폐하는 밸브판을 갖는 밸브몸체가 구비되고, 밸브판의 회전축을 자동으로 회전시키는 기어모터가 구비된 전동 버터플라이밸브에 있어서, 기어모터의 모터축과 회전축을 연결하는 캠이 구비되고, 캠의 외주면에는 다단으로 돌기가 형성되며, 돌기들에 의해 온/오프되면서 기어모터의 회전을 제어하여 밸브몸체의 유로를 개폐하는 리미트스위치가 구비되도록 구성되어 있다.In order to achieve the above object, the present invention is provided with a valve body having a valve plate for opening and closing the flow path, the electric butterfly valve with a gear motor for automatically rotating the rotating shaft of the valve plate, the motor shaft of the gear motor and Cam is provided to connect the rotary shaft, the outer periphery of the cam is formed with a multi-stage projection, is configured to be provided with a limit switch for opening and closing the flow path of the valve body by controlling the rotation of the gear motor on / off by the projections. .
이하 본 고안의 바람직한 실시예를 첨부 도면에 따라 상세히 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도 1은 본 고안 전동 버터플라이밸브의 분리 사시도 이고, 도 2a,b는 본 고안 전동 버터플라이밸브의 개폐상태를 나타낸 단면도 이다. 유로(11)를 갖는 밸브몸체(10)가 구비되고 밸브몸체(10)의 내부에는 유로(11)를 개폐하는 밸브판(12)이 구비된다. 이 밸브판(12)이 유로(11)와 나란하도록 밸브몸체로부터 회전되면 밸브몸체(10)가 개방된다.Figure 1 is an exploded perspective view of the electric butterfly valve of the present invention, Figure 2a, b is a cross-sectional view showing the open and closed state of the electric butterfly valve of the present invention. A valve body 10 having a flow path 11 is provided, and a valve plate 12 for opening and closing the flow path 11 is provided inside the valve body 10. The valve body 10 is opened when the valve plate 12 is rotated from the valve body so as to be parallel to the flow path 11.
그리고 밸브판(12)은 밸브몸체(10)의 상측으로 돌출된 회전축(14)과 연결되며 이 회전축이 본 고안의 기어모터(20)와 연결된다. 기어모터(20)는 내부에 감속기어군이 내장된 모터로서, 기어모터(20)의 모터축(21)이 캠(22)을 통하여 회전축(14)과 연결된다. 캠(22)은 외주면에 180도 간격으로 벌어진 한쌍 돌기(23)가 2층으로 형성되며 각 층의 돌기(23)들은 90도 간격으로 엇갈려 있다. 또한 캠(22)의 각 층에 있는 돌기(23)들에 간섭되는 리미트스위치(24)가 2단으로 구비되며 이 리미트스위치(24)에 의해 기어모터(20)의 회전이 콘트롤 된다.And the valve plate 12 is connected to the rotary shaft 14 protruding upward of the valve body 10, the rotary shaft is connected to the gear motor 20 of the present invention. The gear motor 20 is a motor having a reduction gear group therein, and the motor shaft 21 of the gear motor 20 is connected to the rotation shaft 14 through the cam 22. The cam 22 has two pairs of protrusions 23 formed on the outer circumferential surface at intervals of 180 degrees, and the protrusions 23 on each layer are staggered at intervals of 90 degrees. In addition, the limit switch 24 which interferes with the projections 23 on each layer of the cam 22 is provided in two stages, and the rotation of the gear motor 20 is controlled by the limit switch 24.
기어모터(20)와 캠(22) 및 각 리미트스위치(24)는 모터케이스(25)의 내부에 내장되어 있으며 모터케이스(25) 하단의 원통형 체결구(26)와 밸브몸체(10) 상단의 원통형 체결구(15)가 커플링(27)을 통하여 서로 연결된다. 따라서 모터케이스(25)와 밸브몸체(10)가 커플링(27)으로 연결되며, 모터케이스(25)를 분리하고자 할 때 커플링(27)을 제거하면 쉽게 분리된다.The gear motor 20, the cam 22, and each limit switch 24 are built in the motor case 25, and the cylindrical fastener 26 at the bottom of the motor case 25 and the upper end of the valve body 10 are provided. Cylindrical fasteners 15 are connected to each other via a coupling 27. Therefore, the motor case 25 and the valve body 10 are connected to the coupling 27, and when the motor case 25 is to be removed, the coupling 27 is easily removed.
이처럼 구성된 본 고안은 기어모터(20)가 모터케이스(25)를 통하여 밸브몸체(10)에 체결된다. 모터케이스(25)의 하단에 형성된 원통형 체결구(26)와 밸브몸체(10) 상단의 원통형 체결구(15)가 커플링(27)을 통하여 연결되면 모터케이스(25)가 밸브몸체(10)의 상부에 설치된 상태로 놓인다. 도 2b에서와 같이 밸브판(12)이 밸브몸체의 유로(11)와 나란하게 되면 밸브몸체가 열린 상태로 된다.The present invention configured as described above is the gear motor 20 is fastened to the valve body 10 through the motor case (25). When the cylindrical fastener 26 formed at the bottom of the motor case 25 and the cylindrical fastener 15 at the top of the valve body 10 are connected through the coupling 27, the motor case 25 is connected to the valve body 10. Placed on top of the As shown in FIG. 2B, when the valve plate 12 is aligned with the flow path 11 of the valve body, the valve body is opened.
그리고 도 2b에서와 같이 밸브판(12)이 회전되어 유로(11)와 엇갈린 상태로 되면 유로(11)가 막히고 밸브몸체가 폐쇄되는 것으로서, 기어모터(20)로 전원이 인가되면 이의 모터축(21)이 회전되고 캠(22)과 연결된 회전축(14)이 함께 회전된다. 이때 회전축 하단의 밸브판(12)이 회전되어 유로(11)와 엇갈리게 되며 최대한 엇갈리면 모터가 정지된다. 모터축(21)이 회전되는 동안 이와 연결된 캠(22)에 의해 캠의 돌기(23)가 각 리미트스위치(24)를 눌러준다.2B, when the valve plate 12 is rotated to cross the flow path 11, the flow path 11 is blocked and the valve body is closed. When power is supplied to the gear motor 20, the motor shaft ( 21 is rotated and the rotating shaft 14 connected with the cam 22 is rotated together. At this time, the valve plate 12 of the lower end of the rotating shaft is rotated and staggered with the flow path 11, and the motor is stopped if the staggered as much as possible. While the motor shaft 21 is being rotated, the protrusions 23 of the cam press the respective limit switches 24 by the cams 22 connected thereto.
각 리미트스위치(24)는 밸브판(12)이 유로(11)에 대하여 최대한 나란하게 되어 유로가 개방??을 때와 최대한 엇갈려 폐쇄??을 때를 감지하도록 구비된 것이며 이때 기어모터(20)가 정지되도록 하는 것이다. 따라서 기어모터(20)를 원하는 위치에서 정지시킬 수 있음으로 유로의 개폐를 정확하게 조정할수 있다.Each limit switch 24 is provided so as to detect when the valve plate 12 is as parallel as possible to the flow path 11 when the flow path is opened and closed as close as possible, the gear motor 20 To stop. Therefore, the gear motor 20 can be stopped at a desired position, thereby enabling precise adjustment of the opening and closing of the flow path.
도 3은 본 고안 전동 버터플라이밸브의 수동조작상태를 나타낸 단면도 로서, 기어모터(20)가 고정났을 때 또는 수동조작이 필요한 경우 모터케이스 하부의 커플링(27)을 제거하여 모터케이스를 밸브몸체(10)로부터 분리 시킨다. 그리고 밸브몸체(10)의 상단으로 노출된 회전축(14)에 손잡이(30)를 결합시키면 버터플라이밸브를 수동으로 조작할수 있다.3 is a cross-sectional view showing a manual operation state of the electric butterfly valve of the present invention, when the gear motor 20 is fixed or when manual operation is required, the motor case is removed by removing the coupling 27 at the bottom of the motor case. Separate from (10). When the handle 30 is coupled to the rotating shaft 14 exposed to the upper end of the valve body 10, the butterfly valve can be manually operated.
도 5는 본 고안 전동 버터플라이밸브의 사용상태를 나타낸 개략도 로서, 본 고안 전동 버터플라이밸브는 온수 난방장치의 분배기(2)에 설치할 수 있다. 분배기(2)에 다수개의 밸브몸체(10)를 설치하고 각 방(1)마다 에는 이 밸브몸체(10)를 콘트롤할수 있는 콘트롤러(3)를 설치한 것이다.5 is a schematic view showing a state of use of the electric butterfly valve of the present invention, the electric butterfly valve of the present invention can be installed in the distributor (2) of the hot water heater. A plurality of valve bodies 10 are provided in the distributor 2, and a controller 3 capable of controlling the valve bodies 10 is provided in each room 1.
이처럼 구성하면 각 방(1)에서 원하는 온도와 시간 등으로 콘트롤러(3)를 조정할수 있으며 그 온도와 시간에 맞도록 밸브몸체(10)의 기어모터(20)가 작동을 하여 밸브판(12)을 회전 조작시킴으로 온수의 흐름을 자동으로 제어할수 있다.In this configuration, the controller 3 can be adjusted to the desired temperature and time in each room 1, and the gear motor 20 of the valve body 10 is operated to correspond to the temperature and time. You can control the flow of hot water automatically by rotating.
이상에서와 같이 본 고안에 따르면 밸브몸체의 회전축과 기어모터의 모터축이 캠으로 연결되고 캠의 외주면에는 다단으로 돌기가 형성되며 이들 돌기들에 의해 온/오프되는 리미트스위치가 구비된다. 따라서 모터가 회전되는 동안 회전축을 통하여 밸브판이 회전되고 이 밸브판과 유로가 일치되거나 엇갈리면서 밸브가 개폐됨으로 그 구성이 간소하다. 또한 모터가 회전되는 동안 리미트스위치가 온/오프되면서 밸브의 개폐위치가 정확하게 제어됨으로 제품의 신뢰성이 향상되는 등의 효과가 있다.As described above, according to the present invention, the rotary shaft of the valve body and the motor shaft of the gear motor are connected to the cam, and protrusions are formed on the outer circumferential surface of the cam in multiple stages, and limit switches are turned on / off by these protrusions. Therefore, the configuration is simple because the valve plate is rotated through the rotating shaft while the motor rotates, and the valve plate is opened and closed while the valve plate and the flow path coincide or stagger. In addition, since the limit switch is turned on / off while the motor rotates, the opening and closing position of the valve is precisely controlled, thereby improving the reliability of the product.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2020000018743U KR200204310Y1 (en) | 2000-06-30 | 2000-06-30 | Electromotion butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2020000018743U KR200204310Y1 (en) | 2000-06-30 | 2000-06-30 | Electromotion butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR200204310Y1 true KR200204310Y1 (en) | 2000-11-15 |
Family
ID=19663210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2020000018743U KR200204310Y1 (en) | 2000-06-30 | 2000-06-30 | Electromotion butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR200204310Y1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10371470B2 (en) | 2015-11-12 | 2019-08-06 | DOOSAN Heavy Industries Construction Co., LTD | Condenser tube cleaning apparatus |
-
2000
- 2000-06-30 KR KR2020000018743U patent/KR200204310Y1/en active IP Right Grant
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10371470B2 (en) | 2015-11-12 | 2019-08-06 | DOOSAN Heavy Industries Construction Co., LTD | Condenser tube cleaning apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5944052A (en) | Multiple outlets self-actuated irrigation valve | |
| JP2001355754A (en) | Motor-driven spherical valve | |
| US7607325B2 (en) | Hydraulic distributor for a washing machine | |
| US5848610A (en) | Motorized diverter valve | |
| KR200216868Y1 (en) | Electromotion ball valve | |
| KR100392198B1 (en) | Electromotion ball valve | |
| KR200196289Y1 (en) | Electromotion ball valve | |
| KR200417400Y1 (en) | An electric motor ball valve | |
| US20130105019A1 (en) | Valve cartridge for a sanitary fitting | |
| KR200204310Y1 (en) | Electromotion butterfly valve | |
| JP2004528514A (en) | Sanitary fitting cartridge | |
| KR200309154Y1 (en) | Electromotion three way ball valve | |
| KR100621885B1 (en) | Three way valve | |
| KR920008602B1 (en) | Sanitary combination mixing valve | |
| KR101009486B1 (en) | Faucet for cold water and hot water | |
| KR200156573Y1 (en) | Electric control apparatus of valve in hot water distributer | |
| JP4176839B2 (en) | Valve cartridge for a lift valve with closing pressure based on limited sealing | |
| KR200383943Y1 (en) | Three way valve | |
| JPH09152044A (en) | Ball valve | |
| KR200198799Y1 (en) | 3-position valve for boiler | |
| KR20070090702A (en) | An electric motor ball valve | |
| KR200410000Y1 (en) | Automatic gas circuit breaking apparatus | |
| CN210770354U (en) | Rotary gas plug valve | |
| KR101583182B1 (en) | apparatus of valve | |
| US3416569A (en) | Mixing faucet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| REGI | Registration of establishment | ||
| LAPS | Lapse due to unpaid annual fee | ||
| T701 | Written decision to grant on technology evaluation |