CN106594323A - 一种有效防止多路阀阀芯卡滞的结构 - Google Patents

一种有效防止多路阀阀芯卡滞的结构 Download PDF

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Publication number
CN106594323A
CN106594323A CN201611255372.4A CN201611255372A CN106594323A CN 106594323 A CN106594323 A CN 106594323A CN 201611255372 A CN201611255372 A CN 201611255372A CN 106594323 A CN106594323 A CN 106594323A
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China
Prior art keywords
valve
valve core
clamping stagnation
valve body
endoporus
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Pending
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CN201611255372.4A
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English (en)
Inventor
琚永光
余红波
杨勇
白永刚
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Long Gong (shanghai) Precision Hydraulic Co Ltd
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Long Gong (shanghai) Precision Hydraulic Co Ltd
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Priority to CN201611255372.4A priority Critical patent/CN106594323A/zh
Publication of CN106594323A publication Critical patent/CN106594323A/zh
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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
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
    • F16K11/0708—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides comprising means to avoid jamming of the slide or means to modify the flow
    • 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
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
    • F16K11/0716—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides with fluid passages through the valve member
    • 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
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/08—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks
    • F16K11/085—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with cylindrical plug
    • F16K11/0856—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with cylindrical plug having all the connecting conduits situated in more than one plane perpendicular to the axis of the plug

Abstract

本发明公开了一种有效防止多路阀阀芯卡滞的结构，包括设于阀体的内孔内的阀芯，阀芯从内孔的两端露出，其特征在于，所述阀体与阀芯之间设有阀芯套，阀芯套的两端不从内孔的两端露出，阀芯套设有用于装配阀芯的轴向内孔、与阀芯外部结构相配合的内槽及用于与阀体上的油路孔连通的径向内孔。本发明利用阀芯套隔离阀体和阀芯，增大阀芯套与阀体的配合间隙大于阀体受力内孔变形量，保证了阀芯套与阀芯的配合间隙，解决阀芯卡滞的问题。

Description

一种有效防止多路阀阀芯卡滞的结构
技术领域
本发明涉及一种有效防止多路阀阀芯卡滞的结构，属于高压液压多路阀结构技术领域。
背景技术
多路阀主要用于中小型液压挖掘机及其它工程机械的主油路液压系统，是主油路液压系统的重要组成部分。在主油路液压系统中，多路阀确定了液压油从液压泵流向各液压执行元件的路线和方式，在各作用元件同时工作时，负责流量分配，实现复合动作，从而满足操作者的对执行元件的动作要求。阀芯和阀体是多路阀重要的组成部分，它们的配合作用是实现改变液压油工作路线和工作方式功能。装配时，阀体两面受力变形，易导致阀芯卡滞，严重影响着多路阀的装配合格率。
目前，传统的多路阀阀芯的结构如图1-2所示，由阀体1和阀芯5组成。阀体1和阀芯5直接配合。由于多路阀是靠传导液压油来工作的，为了减小多路阀的内泄量，所以阀芯5与阀体1的配合间隙非常小。当装配阀芯5时，阀芯5两面受力而使其内部变形，从而导致与阀体1配合的内孔内径缩小，变形量大于两者之间的配合间隙，阀芯5与阀体1形成过盈配合，从而导致阀体1装配出现卡滞问题，严重影响着多路阀的装配合格率。
发明内容
本发明所要解决的技术问题是现有多路阀阀芯在装配时容易与阀体出现卡滞现象。
为了解决上述技术问题，本发明的技术方案是提供了一种有效防止多路阀阀芯卡滞的结构，包括设于阀体的内孔内的阀芯，阀芯从内孔的两端露出，其特征在于，所述阀体与阀芯之间设有阀芯套，阀芯套的两端不从内孔的两端露出，阀芯套设有用于装配阀芯的轴向内孔、与阀芯外部结构相配合的内槽及用于与阀体上的油路孔连通的径向内孔。
优选地，所述阀芯套外侧设有多个外沟槽，外沟槽内设有O型密封圈。
优选地，所述阀芯的内孔的两端设有内沟槽，内沟槽内设有用于限位阀芯套的孔用挡圈。孔用挡圈用于限制阀芯套与阀体发生相对轴向滑动。
本发明对阀体增大了与阀芯配合的内孔内径，使之与阀芯套配合；O型密封圈所要求的条件，使阀体和阀芯套的配合间隙较阀体和阀芯的配合间隙有一定的增大，大于阀体内孔受力的变形量，所以阀芯套在装配时不受力变形，使阀芯不发生卡滞，从而解决了多路阀阀芯卡滞的问题。
此外，阀座增大了阀芯配合的内孔内径，保证阀芯套的装入和O形密封圈的密封效果。本发明结构简单，能有效解决多路阀阀芯卡滞的问题，减少多路阀的加工工时及装配成本费用，提高多路阀的性价比。
附图说明
图1为传统多路阀阀芯的主视图；
图2为图1的左视图；
图3为本发明提供的一种有效防止多路阀阀芯卡滞的结构的示意图；
图4为阀体的结构示意图；
图5为阀芯套的结构示意图；
图6为阀芯套轴向的剖视图。
具体实施方式
为使本发明更明显易懂，兹以优选实施例，并配合附图作详细说明如下。
实施例
如图3-6所示，为本发明提供的一种有效防止多路阀阀芯卡滞的结构，其包括阀体1、O型密封圈2、孔用挡圈3、阀芯套4和阀芯5。
本发明的原理为：
首先，新增的孔用挡圈3，先装入阀体1一边内沟槽1-1；
其次，O型密封圈2装入阀芯套4的外沟槽4-4；
再次，将装有O型密封圈2的阀芯套4，装入阀体1的内孔1-2中，在另一边的内沟槽1-1中同样装入一个孔用挡圈3；
最后，在阀芯套4的轴向内孔4-3中装入阀芯5。
当阀体1装配两面受力时，其内孔1-2受力变形。由于阀体1的内孔1-2的变形量小于阀体1的内孔1-2与阀芯套4的配合间隙，所以阀芯套4未受力变形，阀芯套4与阀芯5的配合要求依然满足设计要求，阀芯5就不会卡滞，阀芯5卡滞的问题得到解决。
同时，阀芯套4设计有轴向内孔4-3，与阀芯5能形成良好间隙配合；轴向内孔4-3内根据阀芯5外部结构设计的内槽4-1，确保多路阀的阀芯5控制性能；设计的径向内孔4-2，确保与阀体1各油道相通；外部设计有外沟槽4-1，确保O型密封圈2的密封性能。

Claims (3)

1.一种有效防止多路阀阀芯卡滞的结构，包括设于阀体(1)的内孔(1-2)内的阀芯(5)，阀芯(5)从内孔(1-2)的两端露出，其特征在于，所述阀体(1)与阀芯(5)之间设有阀芯套(4)，阀芯套(4)的两端不从内孔(1-2)的两端露出，阀芯套(4)设有用于装配阀芯(5)的轴向内孔(4-3)、与阀芯(5)外部结构相配合的内槽(4-1)及用于与阀体(1)上的油路孔连通的径向内孔(4-2)。
2.如权利要求1所述的有效防止多路阀阀芯卡滞的结构，其特征在于，所述阀芯套(4)外侧设有多个外沟槽(4-4)，外沟槽(4-4)内设有O型密封圈(2)。
3.如权利要求1所述的有效防止多路阀阀芯卡滞的结构，其特征在于，所述阀芯(1)的内孔(1-2)的两端设有内沟槽(1-1)，内沟槽(1-1)内设有用于限位阀芯套(4)的孔用挡圈(3)。
CN201611255372.4A 2016-12-30 2016-12-30 一种有效防止多路阀阀芯卡滞的结构 Pending CN106594323A (zh)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4832081A (en) * 1984-03-01 1989-05-23 Mannesmann Rexroth Gmbh Control valve
CN102297171A (zh) * 2010-07-30 2011-12-28 三一重工股份有限公司 液压阀、液压阀组及液压阀控制方法
CN103438042A (zh) * 2013-08-30 2013-12-11 上海三一重机有限公司 一种液压多路阀阀套及工程机械

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4832081A (en) * 1984-03-01 1989-05-23 Mannesmann Rexroth Gmbh Control valve
CN102297171A (zh) * 2010-07-30 2011-12-28 三一重工股份有限公司 液压阀、液压阀组及液压阀控制方法
CN103438042A (zh) * 2013-08-30 2013-12-11 上海三一重机有限公司 一种液压多路阀阀套及工程机械

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Application publication date: 20170426