KR950019262A - Three stage check valve of hydraulic control valve - Google Patents

Three stage check valve of hydraulic control valve Download PDF

Info

Publication number
KR950019262A
KR950019262A KR1019930029102A KR930029102A KR950019262A KR 950019262 A KR950019262 A KR 950019262A KR 1019930029102 A KR1019930029102 A KR 1019930029102A KR 930029102 A KR930029102 A KR 930029102A KR 950019262 A KR950019262 A KR 950019262A
Authority
KR
South Korea
Prior art keywords
check valve
valve
prevent
hydraulic control
poppet
Prior art date
Application number
KR1019930029102A
Other languages
Korean (ko)
Inventor
정해균
Original Assignee
김무
삼성중공업 주식회사
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 김무, 삼성중공업 주식회사 filed Critical 김무
Priority to KR1019930029102A priority Critical patent/KR950019262A/en
Publication of KR950019262A publication Critical patent/KR950019262A/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/027—Check valves
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
    • E02F9/2267—Valves or distributors
    • 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
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/025—Check valves with guided rigid valve members the valve being loaded by a spring
    • 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
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/06—Check valves with guided rigid valve members with guided stems
    • F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
    • F16K15/066—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring with a plurality of valve members
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/40—Special vehicles
    • B60Y2200/41—Construction vehicles, e.g. graders, excavators

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Check Valves (AREA)

Abstract

본 발명은 건설기계등에 널리 적용되어 사용되는 유압장치의 부분부품중 유압유의 역류를 방지하도록 한 첵밸브에 관한 것으로서 특히 여러개의 첵밸브 기능을 동시에 수행할 수 있도록 하는 유압 컨트롤 밸브의 3단 첵밸브에 관한 것으로 유압유의 합류시 역류를 방지하기 위한 역류방지용 첵밸브와 실린더의 과부하시 역류를 방지해 주는 로드 첵 밸브와 센터 바이패스통로에 유량을 합류 시킬 때 역류 방지용 첵 밸브 등 여러개의 첵밸브가 설치될때 별도의 배관이나 블록을 만들 필요없이 한개의 첵 밸브 조립체 안에 설치함으로써 규격을 소형화 하고 원가를 절감하도록 함을 특징으로 한다.The present invention relates to a check valve to prevent the reverse flow of hydraulic oil among the parts of the hydraulic device widely applied to construction machinery, etc. In particular, the three-stage check valve of the hydraulic control valve to perform a plurality of check valve functions at the same time It is related to several check valves such as a backflow check valve to prevent backflow when hydraulic oil is joined and a load check valve to prevent backflow when cylinder overload and a check valve to prevent flow back when the flow rate is joined to the center bypass passage. When installed, it can be installed in a single valve assembly without having to make a separate pipe or block, thereby minimizing size and reducing cost.

Description

유압 컨트롤 밸브의 3단 첵밸브Three stage check valve of hydraulic control valve

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명의 상세 단면도.1 is a detailed cross-sectional view of the present invention.

제2도는 본 발명을 적용한 밸브의 단면도.2 is a cross-sectional view of the valve to which the present invention is applied.

제3도는 본 발명을 이용한 유압 회로의 실시예.3 is an embodiment of a hydraulic circuit using the present invention.

제4도는 본 발명을 이용한 유압 회로의 상세도.4 is a detailed view of a hydraulic circuit using the present invention.

제5도는 스풀을 이동 하였을 경우 작동상태를 나타낸 설명도.5 is an explanatory diagram showing an operating state when the spool is moved.

제6도는 종래기술의 로드 첵 부 상세 단면도.6 is a detailed cross-sectional view of the rod chamfer of the prior art.

제7도는 종래기술에 따른 실시예.7 is an embodiment according to the prior art.

Claims (1)

유입장치의 역류방지를 위한 첵 밸브에 있어서, 첵 포펫 A (2)는 밸브하우징(1)의 시트면에 접촉하고, 상기 첵 포펫 A (2)를 유지시켜주는 스프링 A (3)은 첵 포펫 B (4)에 접촉하고, 상기 첵 포펫 B (4)는 밸브하우징(1)의 첵 시트면에 접촉하면서 첵 포펫 A (2)와 함께 구성되며, 첵 포멧 C (6)은 상기 첵 포펫 B(4)와 마주 보면서 첵 시트면에 구성됨을 특징으로 하는 유압 컨트롤 밸브의 3단 첵 밸브.In the shock valve for preventing backflow of the inlet device, shock poppet A (2) contacts the seat face of the valve housing (1), and spring A (3) holding the shock poppet A (2) is shock shock In contact with B (4), the fin poppet B (4) is configured with the fin poppet A (2) while contacting the fin seat surface of the valve housing (1), the fin format C (6) is the fin poppet B A three-stage 의 valve of a hydraulic control valve characterized in that it is configured on the 첵 seat surface facing (4). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930029102A 1993-12-22 1993-12-22 Three stage check valve of hydraulic control valve KR950019262A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930029102A KR950019262A (en) 1993-12-22 1993-12-22 Three stage check valve of hydraulic control valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930029102A KR950019262A (en) 1993-12-22 1993-12-22 Three stage check valve of hydraulic control valve

Publications (1)

Publication Number Publication Date
KR950019262A true KR950019262A (en) 1995-07-22

Family

ID=66851168

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930029102A KR950019262A (en) 1993-12-22 1993-12-22 Three stage check valve of hydraulic control valve

Country Status (1)

Country Link
KR (1) KR950019262A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100429224B1 (en) * 2001-11-16 2004-04-29 엘지전자 주식회사 by pass valve for sensing pressure of both direction

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100429224B1 (en) * 2001-11-16 2004-04-29 엘지전자 주식회사 by pass valve for sensing pressure of both direction

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E902 Notification of reason for refusal
N231 Notification of change of applicant
E701 Decision to grant or registration of patent right
NORF Unpaid initial registration fee