KR20050115150A - Check valve - Google Patents

Check valve Download PDF

Info

Publication number
KR20050115150A
KR20050115150A KR1020040040512A KR20040040512A KR20050115150A KR 20050115150 A KR20050115150 A KR 20050115150A KR 1020040040512 A KR1020040040512 A KR 1020040040512A KR 20040040512 A KR20040040512 A KR 20040040512A KR 20050115150 A KR20050115150 A KR 20050115150A
Authority
KR
South Korea
Prior art keywords
valve
installation
check valve
valve body
valve seat
Prior art date
Application number
KR1020040040512A
Other languages
Korean (ko)
Inventor
김의수
김문수
김창생
Original Assignee
김의수
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 김의수 filed Critical 김의수
Priority to KR1020040040512A priority Critical patent/KR20050115150A/en
Publication of KR20050115150A publication Critical patent/KR20050115150A/en

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00Check valves
    • F16K15/02Check valves with guided rigid valve members
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00Lift 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
    • F16K1/32Details
    • F16K1/34Cutting-off parts, e.g. valve members, seats
    • F16K1/42Valve seats
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00Check valves
    • F16K15/18Check valves with actuating mechanism; Combined check valves and actuated valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K47/00Means in valves for absorbing fluid energy
    • F16K47/02Means in valves for absorbing fluid energy for preventing water-hammer or noise

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Check Valves (AREA)

Abstract

본 발명은 일방향으로 내부 매체를 급송시키기 위하여 사용되는 체크밸브에 관한 것으로, 특히 360도 전 방향에 걸쳐 고르게 매체의 통과 내지 차단이 선택적으로 정확하게 이루어져 소음의 발생을 억제하면서 작동부위의 마찰로 인한 과열 현상이 발생하는 것을 방지하도록 한 체크밸브에 관한 것이다.The present invention relates to a check valve used to feed an internal medium in one direction, and in particular, the passage or blocking of the medium is selectively and precisely made evenly over 360 degrees in all directions to suppress the generation of noise while overheating due to friction of the operating part. A check valve is provided to prevent a phenomenon from occurring.

본 발명에 의하면, 밸브체의 중심에 설치돌부를 마련하고 상기 설치돌부를 제외한 나머지 부위를 밸브작동부로 구성하며, 상기 밸브체가 설치되는 밸브시트부에는 밸브작동부를 설치하기 위한 설치부가 중심에 마련되고 상기 밸브작동부가 위치하는 부위로서 상기 밸브시트부에는 내부유체의 통로가 균형을 갖추어 복수개 설치되어 이루어지는 체크밸브를 제공하여, 작동부위에서 발생되는 소음을 적게하면서 마찰에 의하여 과열이 발생되는 것을 방지할 수 있다.According to the present invention, the installation protrusion is provided in the center of the valve body and the remaining portion except for the installation protrusion is constituted by the valve operation portion, and the valve seat portion on which the valve body is installed is provided at the center of the installation portion for installing the valve operation portion. The valve seat portion is located in the valve seat portion to provide a check valve is provided with a plurality of passages of the balance of the inner fluid is provided, to prevent overheating caused by friction while reducing the noise generated in the operating portion Can be.

Description

체크 밸브{Check Valve}Check Valve

본 발명은 일방향으로 내부 매체를 급송시키기 위하여 사용되는 체크밸브에 관한 것으로, 특히 360도 전 방향에 걸쳐 고르게 매체의 통과 내지 차단이 선택적으로 정확하게 이루어져 소음의 발생을 억제하면서 작동부위의 마찰로 인한 과열 현상이 발생하는 것을 방지하도록 한 체크밸브에 관한 것이다.The present invention relates to a check valve used to feed an internal medium in one direction, and in particular, the passage or blocking of the medium is selectively and precisely made evenly over 360 degrees in all directions to suppress the generation of noise while overheating due to friction of the operating part. A check valve is provided to prevent a phenomenon from occurring.

종래에 있어서는 주로 사용되고 있는 체크밸브는 도5 및 도6에 예시한 바와 같이, 밸브시트(1)의 일측에 유체의 통로(2)를 형성하고, 이 통로(2)와 인접된 위치로서 설치부(5)엔 밸브체(3)의 일측을 고정 설치하며, 밸브체(3)의 자유단부(4)는 상기 통로(2)를 개폐할 수 있게 구성된 형태이다. 그리고, 이러한 종래의 체크밸브는 밸브체(3)의 작동시에 밸브체(3)가 고정 설치된 설치부(5)를 제외하고 나머지로서 그 반대측에 위치한 탄성적 소재의 자유단부(4)가 상,하 방향으로 움직이면서 상기 통로(2)를 개폐할 수 있게 작동이 이루어지게 된다.The check valve mainly used in the related art forms a fluid passage 2 on one side of the valve seat 1, as shown in Figs. 5 and 6, and is provided as a position adjacent to the passage 2. (5) The one side of the valve body 3 is fixedly installed, and the free end 4 of the valve body 3 is configured to open and close the passage 2. In the conventional check valve, the free end 4 of the elastic material positioned on the opposite side of the conventional check valve except for the mounting portion 5 in which the valve body 3 is fixed when the valve body 3 is operated is upward. , The operation is made to open and close the passage (2) while moving in the downward direction.

그러나, 이러한 구조의 체크밸브는 고정부인 설치부(5)를 중심으로 그 대향측에 위치하는 외팔보 형태의 자유단부(4)만이 일측으로 편중되게 승,하강 작동이 이루어는 구조적인 단점으로 인하여, 개폐작동시에는 순간적인 개폐동작이 불안정하게 이루어지고, 소음이 많이 발생되어 주변이 시끄럽게 되어 환경을 해치는 결과가 되고, 이로 인하여 밸브체(3)와 밸브시트(1)의 마찰이 많이 발생하게 되고 결국 이들 마찰부로부터 열이 많이 발생되는 과열현상에 의하여 밸브체(3)를 포함하여 밸브시트(1)도 쉽게 손상되어 사용수명을 크게 단축시키는 요인이 되고 있다.However, the check valve of this structure is due to the structural disadvantage that only the cantilever-shaped free end 4 located on the opposite side of the mounting portion 5, which is a fixed portion, is lifted and lowered to one side. In the opening and closing operation, the instantaneous opening and closing operation is made unstable, and a lot of noise is generated and the surroundings become noisy, which results in harm to the environment, which causes a lot of friction between the valve body 3 and the valve seat 1. As a result, the valve seat 1, including the valve body 3, is also easily damaged by the overheating phenomenon in which a large amount of heat is generated from these friction parts, which greatly reduces the service life.

본 발명에 의하면, 밸브체의 중심에 왕복작동부를 마련하고 상기 왕복작동부를 제외한 나머지 부위를 밸브작동부로 구성하며, 상기 밸브체가 설치되는 밸브시트부에는 밸브작동부를 설치하기 위한 설치부가 중심에 마련되고 상기 밸브작동부가 위치하는 부위에는 내부유체의 통로가 균형을 갖추어 복수개 설치되어 이루어지는 체크밸브를 제공하여, 작동부위에서 발생되는 소음을 적게하면서 마찰에 의하여 과열이 발생되는 것을 방지할 수 있다.According to the present invention, a reciprocating actuating part is provided in the center of the valve body, and the remaining parts except the reciprocating actuating part are constituted by the valve actuating part, and an installation part for installing the valve actuating part is provided at the center of the valve seat in which the valve body is installed. The valve operating portion is provided with a check valve is provided with a plurality of passages in the balance of the inner fluid is provided, it is possible to prevent the overheating caused by friction while reducing the noise generated in the operating portion.

본 발명은 이와 같은 종래의 문제점을 해소하기 위하여 다음과 같은 목적을 두고 연구 개발이 이루어졌다.The present invention has been made for the following purposes in order to solve such a conventional problem.

본 발명의 주목적은 밸브체의 중심에 설치돌부를 마련하고 상기 설치돌부를 제외한 나머지 부위를 밸브작동부로 구성하며, 상기 밸브체가 설치되는 밸브시트부에는 밸브작동부를 설치하기 위한 설치부가 중심에 마련되고 상기 밸브작동부가 위치하는 부위로서 상기 밸브시트부에는 내부유체의 통로가 균형을 갖추어 복수개 설치되어 이루어지는 체크밸브를 제공하여 밸브작동부에서 작동시에 발생되는 소음을 적게 하면서 마찰에 의하여 과열현상이 발생하는 것을 방지하여 밸브체의 사용수명을 연장시킬수 있는 체크밸브를 제공하고자 하는데 있다.The main purpose of the present invention is to provide an installation protrusion in the center of the valve body and to configure the remaining portion except the installation protrusion as the valve operating portion, the valve seat portion is installed in the valve seat portion is provided with an installation portion for installing the valve operating portion in the center As the valve operation part is located, the valve seat part is provided with a check valve which is provided with a plurality of balanced passages of internal fluid so that the overheating phenomenon occurs due to friction while reducing the noise generated during operation at the valve operation part. The present invention aims to provide a check valve that can extend the service life of the valve body by preventing it.

본 발명의 다른 목적은 밸브작동부를 테이퍼지게 구성하고 이와 상응되는 밸브시트부도 테이퍼진 형태로서 설치요홈형태로 구성하여 개폐작동이 보다 확실하고 기밀유지가 보다 확실하게 이루어지는 체크밸브를 제공하고자 하는데 있다.Another object of the present invention is to provide a check valve in which the valve operation portion is tapered and the corresponding valve seat portion is also tapered in the form of an installation recess so that the opening and closing operation is more sure and the airtightness is more secure.

본 발명은 전술한 목적들을 달성하기 위하여 밸브체의 중심에 설치돌부를 마련하고 상기 설치돌부를 제외한 나머지 부위를 상하로 움직이면서 개폐작동이 이루어지게 밸브작동부로 구성하며, 상기 밸브체가 설치되는 밸브시트부에는 밸브작동부를 설치하기 위한 설치부가 중심에 마련되고 상기 밸브작동부가 위치하는 부위로서 상기 밸브시트부에는 내부유체의 통로가 균형을 갖추어 복수개 설치되어 이루어지는 체크밸브를 제공한다.The present invention provides an installation protrusion in the center of the valve body in order to achieve the above-mentioned objects and constitutes a valve operating portion to open and close operation while moving the remaining portion except the installation protrusion up and down, the valve seat portion is installed There is provided a check valve is provided in the center for the installation portion for installing the valve operating portion and the valve seat is located in the valve seat portion is provided with a plurality of balanced passages of the inner fluid.

또한, 본 발명은 상기 밸브작동부를 테이퍼지게 구성하고 이와 상응되는 밸브시트부도 테이퍼진 형태로서 설치요홈형태로 구성하여 이루어지는 체크밸브를 제공한다.In addition, the present invention provides a check valve made of a tapered configuration of the valve operation portion and a corresponding valve seat portion in the form of an installation groove as a tapered form.

이하, 첨부된 도면에 의하여 본 발명의 바람직한 실시예를 중심으로 보다 상세하게 살펴보기로 한다.Hereinafter, with reference to the accompanying drawings will be described in more detail with reference to the preferred embodiment of the present invention.

밸브체(10)의 중심에 설치돌부(12)를 마련하고 상기 설치돌부(12)를 제외한 나머지 부위를 상하로 움직이면서 개폐작동이 이루어지게 밸브작동부(14)로 구성하며, 상기 밸브체(10)가 설치되는 밸브시트부(20)에는 상기 밸브체(10)를 설치하기 위한 설치부(22)가 중심에 마련되고 상기 밸브작동부(14)가 위치하는 부위로서 상기 밸브시트부(20)에는 내부유체의 통로(24)가 균형을 갖추어 복수개 설치되어 이루어지게 된다.The installation protrusion 12 is provided in the center of the valve body 10, and the valve operation unit 14 is configured to open and close while moving the remaining portions except the installation protrusion 12 up and down. In the valve seat portion 20 in which the valve seat portion 20 is installed, an installation portion 22 for installing the valve body 10 is provided at the center thereof, and the valve seat portion 20 is located at the valve operating portion 14. There is a plurality of passages 24 of the inner fluid are balanced.

이때, 상기 밸브체(10)의 경우에 탄성력과 내구성이 비교적 우수한 실리콘러버(Silicon Rubber)를 사용하여 사출성형하여 제작함이 바람직하다.At this time, in the case of the valve body 10, it is preferable to manufacture by injection molding using a silicon rubber (Silicon Rubber) having a relatively excellent elastic force and durability.

또한, 상기 밸브작동부(14)의 경우에는 구조적으로 탄성 복귀력이 보다 우수하게 되고 밸브체(10)와의 기밀유지가 보다 용이하도록 테이퍼지게 구성하고 이와 상응되는 밸브시트부(20)도 테이퍼진 형태로서 설치요홈형태로 구성하여 이루어지도록 함이 바람직하다.In addition, in the case of the valve actuating unit 14, the elastic return force is structurally excellent and the taper is configured to be more easily maintained with the valve body 10, and the corresponding valve seat portion 20 is also tapered. It is preferable that the configuration is made in the form of an installation groove.

더우기, 상기 밸브체(10)의 제조시에 설치돌부(12)는 내측으로 단턱을 형성하여 통공 형태의 설치부(22)에 끼워 결합하는 경우에 억지끼워 맞춤하게 되면 일단 지름이 감소된 상태에서 설치부(22)를 통과하게 되고 일단 설치가 완료된 후에 외력을 제거하게 되면 원상태로 복귀하면서 설치돌부(12)는 지름이 커지면서 설치부(22) 전체를 막고 단턱이 걸려 설치가 확실하고도 간편하게 이루어질 수 있도록 구성된다.Furthermore, when the valve body 10 is manufactured, the installation protrusions 12 form stepped inwards to be fitted into the through-hole installation part 22 to be fitted in the case of being fitted to fit in a state where the diameter is reduced once. After passing through the installation part 22 and removing the external force once the installation is completed, the installation protrusion part 12 returns to its original state while the diameter of the installation protrusion 12 becomes larger and blocks the entire installation part 22, and the step is caught. It is configured to be.

이와 같이 구성된 본 발명인 체크밸브는 도4에 예시한 바와 같이, 모터(30)에 의하여 구동되는 컴프레서(32)에 내장한 상태로 설치하여 활용할 수 있는데, 이 경우에 도1 내지 도4에 예시한 바와 같이, 체크밸브를 설치방향을 달리하여 사용하게 된다.As illustrated in FIG. 4, the check valve of the present invention configured as described above may be installed and utilized in a state in which the compressor 32 driven by the motor 30 is installed. In this case, the check valve illustrated in FIGS. As such, the check valve is used in a different installation direction.

즉, 컴프레서(32)의 외부로부터 기체를 유입하게 되면 도면상 좌측에 위치하는 체크밸브만이 작동하여 통로(24)를 거쳐 밸브작동부(14)를 들어 올리고 통과되면서 컴프레서(32)의 내부로 유입되었다가 외부로 배출되는 경우에는 도면상 우측에 위치하는 체크밸브만이 작동하여 통로(24)를 거쳐 밸브작동부(14)를 들어 올리고 외부로 배츨되어 결국 컴프레서(32)의 외부로 내부기체의 배출이 이루어지게 된다.That is, when gas is introduced from the outside of the compressor 32, only the check valve located on the left side of the drawing operates to lift and pass the valve operating portion 14 through the passage 24 to the inside of the compressor 32. In the case of inflow and discharge to the outside, only the check valve located on the right side of the drawing is operated to lift the valve operating portion 14 through the passage 24 and to be discharged to the outside, and eventually to the outside of the compressor 32. Will be discharged.

이때, 통로(24)가 설치부(22)를 중심으로 통로(24)가 복수개 균형을 이룬 상태로 설치되므로, 기체의 유입 또는 배출시에 이들 통로(24)를 거쳐 동시에 유입 또는 배출 동작이 이루어게 되고, 밸브작동부(14) 역시 이들 통로(24)가 위치한 부위에서 상,하 방향 작동이 동시에 이루어지게 되므로, 균형적인 밸브작동이 이루어지게 된다.At this time, since the passage 24 is installed in a state where a plurality of passages 24 are balanced with respect to the installation unit 22, the inflow or discharge operation is simultaneously performed through these passages 24 at the time of inflow or outflow of gas. In addition, since the valve operation part 14 also operates at the same time as the up and down direction at the position where these passages 24 are located, a balanced valve operation is achieved.

물론, 이러한 밸브작동이 이루어진 다음에 기체의 유입 또는 배출 작동이 종료되면, 밸브체(10)가 가지고 있는 밸브작동부(14) 자체적인 탄성력에 의하여 역시 원위치로 복귀하면서 밸브시트부(20)와 밀착되어 밸브작동부(14)는 복수개의 통로(24)를 막고 다음의 작동을 위하여 대기상태에 있게 된다.Of course, when the inflow or discharge operation of the gas is completed after such a valve operation, the valve seat portion 20 and the valve seat portion 20 are returned to their original positions by the elastic force of the valve operation portion 14 owned by the valve body 10. In close contact, the valve actuating portion 14 blocks the plurality of passages 24 and is in a standby state for the next operation.

이상 살펴본 바와 같이, 본 발명인 체크밸브에 의하면, 밸브체(10)의 중심에 설치돌부(12)를 마련하고 상기 설치돌부(12)를 제외한 나머지 부위를 밸브작동부(14)로 구성하며, 상기 밸브체(10)가 설치되는 밸브시트부(20)에는 밸브작동부(14)를 설치하기 위한 설치부(22)가 중심에 마련되고 상기 밸브작동부(14)가 위치하는 부위로서 상기 밸브시트부(20)에는 내부 유체의 통로(24)가 균형을 갖추어 복수개 설치되어 밸브작동부(14)에서 작동시에 발생되는 소음을 적게 하면서 마찰에 의하여 과열현상이 발생하는 것을 방지하여 밸브체의 사용수명을 연장시킬수 있게 되고, 또한 밸브작동부(14)를 테이퍼지게 구성하고 이와 상응되는 밸브시트부(20)도 테이퍼진 형태로서 설치요홈형태로 구성하여 개폐작동이 보다 확실하고 기밀유지가 보다 확실하게 이루어지는 등의 우수한 효과를 갖게 된다.As described above, according to the check valve of the present invention, the installation protrusion 12 is provided in the center of the valve body 10, and the remaining portions except the installation protrusion 12 are constituted by the valve operation portion 14, In the valve seat portion 20 on which the valve body 10 is installed, an installation portion 22 for installing the valve operation portion 14 is provided at the center, and the valve seat portion is a portion where the valve operation portion 14 is located. The part 20 is provided with a plurality of balanced passages 24 of the internal fluid to reduce the noise generated during operation in the valve operating portion 14 and to prevent overheating due to friction, thereby using the valve body. It is possible to extend the service life, and the valve operation part 14 is tapered, and the corresponding valve seat part 20 is also tapered, in the form of an installation recess, so that the opening and closing operation is more sure and the airtightness is more secure. Etc. It will have a good effect.

도1은 본 발명에 의한 바람직한 일례로서 요부 분해사시도,1 is an exploded perspective view showing main parts as a preferred example according to the present invention;

도2는 도1의 결합상태 평면도,Figure 2 is a plan view of the coupled state of FIG.

도3은 도2의 종단면도,3 is a longitudinal sectional view of FIG. 2;

도4는 설치 사용상태도,4 is an installation and use state diagram,

도5는 종래의 체크밸브를 예시한 평면도,5 is a plan view illustrating a conventional check valve;

도6은 도5의 종단면도.Figure 6 is a longitudinal cross-sectional view of Figure 5;

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

10: 밸브체, 12: 설치돌주,10: valve body, 12: mounting masonry,

4: 밸브작동부, 20: 밸브시트부,4: valve operation part, 20: valve seat part,

22: 설치부, 24: 통로22: mounting portion, 24: passage

Claims (2)

밸브체(10)의 중심에 설치돌부(12)를 마련하고 상기 설치돌부(12)를 제외한 나머지 부위를 상하로 움직이면서 개폐작동이 이루어지게 밸브작동부(14)로 구성하며,The installation protrusion 12 is provided at the center of the valve body 10 and the valve operation portion 14 is configured to open and close while moving the remaining portions except the installation protrusion 12 up and down. 상기 밸브체(10)가 설치되는 밸브시트부(20)에는 상기 밸브체(10)를 설치하기 위한 설치부(22)가 중심에 마련되고 상기 밸브작동부(14)가 위치하는 부위로서 상기 밸브시트부(20)에는 내부유체의 통로(24)가 균형을 갖추어 복수개 설치되어 이루어지는 것을 특징으로 하는 체크밸브.In the valve seat portion 20 on which the valve body 10 is installed, an installation part 22 for installing the valve body 10 is provided at the center and the valve operation part 14 is located at the valve position. The check valve, characterized in that the seat portion 20 is provided with a plurality of passages of the inner fluid in a balanced manner. 제1항에 있어서,The method of claim 1, 상기 밸브작동부(14)를 테이퍼지게 구성하고 이와 상응되는 밸브시트부(20)도 테이퍼진 형태로서 설치요홈형태로 구성하며,The valve operation part 14 is configured to be tapered, and the corresponding valve seat part 20 is also formed in an installation recess shape as a tapered shape. 상기 밸브체(10)의 설치돌부(12)는 내측으로 단턱을 형성하고 상기 설치부(22)를 통공형태로 형성하여 서로 끼워 결합하여 이루어지는 것을 특징으로 하는 체크밸브. The installation protrusion 12 of the valve body 10 is formed with a stepped inward and the installation portion 22 to form a through-hole to form a check valve, characterized in that formed by fitting to each other.
KR1020040040512A 2004-06-03 2004-06-03 Check valve KR20050115150A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020040040512A KR20050115150A (en) 2004-06-03 2004-06-03 Check valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020040040512A KR20050115150A (en) 2004-06-03 2004-06-03 Check valve

Related Child Applications (1)

Application Number Title Priority Date Filing Date
KR20-2004-0015551U Division KR200359123Y1 (en) 2004-06-03 2004-06-03 Check Valve

Publications (1)

Publication Number Publication Date
KR20050115150A true KR20050115150A (en) 2005-12-07

Family

ID=37289219

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020040040512A KR20050115150A (en) 2004-06-03 2004-06-03 Check valve

Country Status (1)

Country Link
KR (1) KR20050115150A (en)

Similar Documents

Publication Publication Date Title
US9309978B2 (en) Low head to stem ratio poppet valve
KR100956242B1 (en) A mini vent structure for tire mold
KR200359123Y1 (en) Check Valve
KR20050115150A (en) Check valve
KR100421965B1 (en) Cylinder assembly of hermetic compressor
KR200364054Y1 (en) Check Valve
CN108884941B (en) Switching valve
KR20090112126A (en) Airtight property improvement structure of air compressor air intake/aexhaust system
KR20060008642A (en) Check valve
KR100356058B1 (en) Check valve
KR100774689B1 (en) Waste-discharging structure of air cleaner
CN110410325B (en) Vacuum pump for vehicle and vehicle with same
JP2010216632A (en) Sealant
JP2009275572A (en) Discharge valve device for compressor
KR100887284B1 (en) Vent device of vulcanization mold
KR200169916Y1 (en) Structure of a ventilating patr of air compressor
KR200259967Y1 (en) Noiseless checkvalve
KR101754770B1 (en) Structure of active mount
KR102081506B1 (en) Sucker device
KR102043223B1 (en) Refrigerant-blocking valve assembled &amp; disassembled by element
KR102548525B1 (en) Check valve for air compressor
KR100922209B1 (en) Head cover assembly for hermetic compressor
KR200368772Y1 (en) Lift check valve
KR100501451B1 (en) Exhausting device
KR100335959B1 (en) Valve for muffler

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application