CN106122517A - 差动节流阀 - Google Patents

差动节流阀 Download PDF

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Publication number
CN106122517A
CN106122517A CN201610690945.XA CN201610690945A CN106122517A CN 106122517 A CN106122517 A CN 106122517A CN 201610690945 A CN201610690945 A CN 201610690945A CN 106122517 A CN106122517 A CN 106122517A
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hole
section
valve body
triangle
spool
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CN106122517B (zh
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张金涛
耿德旭
张玉峰
武广斌
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Beihua University
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Beihua University
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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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/60—Handles
    • F16K31/605—Handles for single handle mixing 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
    • F16K41/00—Spindle sealings
    • F16K41/02—Spindle sealings with stuffing-box ; Sealing rings

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Multiple-Way Valves (AREA)
  • Safety Valves (AREA)

Abstract

一种可在液压***中构成进油加旁路复合节流调速回路的差动节流阀，包括阀体、螺塞、弹簧、阀芯、调节手柄安装体、推杆和调节手柄，阀体长度方向中心线上设有台阶孔，通孔上有两个螺纹孔，两个沉割槽，阀体高度方向设有三个轴线平行的孔，三个孔与台阶孔正交，所述阀芯为中空的四段台阶轴，台阶轴上设有两组均布的三个节流槽。

Description

差动节流阀
技术领域
本发明属于液压流量控制领域，具体涉及一种差动节流阀。
背景技术
国家发明专利公开了一种节流阀（CNIO3867766），这种节流阀在液压传动领域得到了广泛的应用，与溢流阀联合应用可以组成多种节流调速回路，可以构成进油节流调速、回油节流调速和旁路节流调速回路，性能各有不同，回路结构上必须设有溢流阀，造成回路结构和操作复杂。
发明内容
本发明的目的在于克服现有技术之不足，提供一种差动节流阀。
本发明所采用的技术方案包括阀体、螺塞、弹簧、阀芯、调节手柄安装体、推杆和调节手柄，所述阀体为长方体，长度方向中心线上设有通孔，所述通孔是一个台阶孔，左端是小螺纹孔，中部设有两个沉割槽，沉割槽宽度相等，右端是大螺纹孔，所述阀体高度方向设有三个轴线平行的孔，依次为A孔、P孔、T孔，三个孔与台阶孔正交，A孔和T孔的位置与两个沉割槽位置正对，所述台阶孔内装有弹簧和阀芯，所述阀体右端大螺纹孔装有调节手柄安装体，所述阀体左端大螺纹孔装有螺塞，螺塞和阀芯间设有圆柱螺旋弹簧，阀芯右端定位台肩顶在调节手柄安装体左端面上，所述阀芯为中空的四段台阶轴，从左至右分为B、C、D、E四段，各段同轴，B段和D段直径相等，C段和E段直径相等，B段左端面设有台阶孔，B段右端圆周方向设有均布的三个节流槽，所述节流槽纵截面为三角形，三角形的底边与B段右端重合，三角形的高等于所述阀体沉割槽宽度，节流槽横截面为扇形，C段直径小于B段，C段设有正交通孔，C段长度等于A孔和T孔中心距减去沉割槽宽度加上1毫米，D段左端圆周方向设有均布的三个节流槽，所述节流槽纵截面为三角形，三角形的底边与D段左端重合，三角形的高等于所述阀体沉割槽宽度，节流槽横截面为扇形，扇形半径等于B段节流槽相对位置横截面扇形半径的一半，E段为一小段凸台，E段端面顶在推杆端面上，所述推杆从左至右依次设有密封圈、外螺纹、径向定位面和轴向安装孔，所述密封圈与调节手柄安装体上的光孔内壁形成密封条件，所述外螺纹与调节手柄安装体上的内螺纹旋合，轴向安装孔设有螺钉连接调节手柄，调节手柄设有紧定螺钉，顶在推杆径向定位面上。
差动节流阀可在液压***中构成进油加旁路复合节流调速回路，P孔接泵出口，A孔接负载（液压缸或液压马达），T孔接油箱。
附图说明
图1为差动节流阀结构示意图。
图2为差动节流阀阀体结构示意图。
图3为差动节流阀阀芯结构示意图。
图4为差动节流阀液压***应用示意图。
具体实施方式
下面结合附图和具体实例对本发明作出进一步地详细描述。
如图1所示一种差动节流阀，由阀体1、螺塞2、弹簧3、阀芯4、调节手柄安装体5、推杆6和调节手柄7组成，所述阀体为长方体，长度方向中心线上设有通孔11，所述通孔11是一个台阶孔，左端是小螺纹孔12，中部设有两个沉割槽13和14，沉割槽宽度相等，右端是大螺纹孔15，所述阀体高度方向设有三个轴线平行的孔，依次为A孔、P孔、T孔，三个孔与台阶孔正交，A孔和T孔的位置与两个沉割槽位置正对，所述通孔11内装有弹簧3和阀芯4，所述阀体1右端大螺纹孔15装有调节手柄安装体5，所述阀体1左端大螺纹孔15装有螺塞2，螺塞1和阀芯4间设有圆柱螺旋弹簧3，阀芯4右端定位台肩顶在调节手柄安装体左端面上，所述阀芯为中空的四段台阶轴，从左至右分为B、C、D、E四段，各段同轴，B段和D段直径相等，C段和E段直径相等，B段左端面设有台阶孔41，B段右端圆周方向设有均布的三个节流槽42，所述节流槽纵截面为三角形，三角形的底边与B段右端面重合，三角形的高等于所述阀体沉割槽宽度，节流槽横截面为扇形，C段直径小于B段，C段设有正交通孔43，C段长度等于A孔和T孔中心距减去沉割槽宽度加上1毫米，D段左端圆周方向设有均布的三个节流槽44，所述节流槽纵截面为三角形，三角形的底边与D段左端重合，三角形的高等于所述阀体沉割槽宽度，节流槽横截面为扇形，扇形半径等于B段节流槽相对位置横截面扇形半径的一半，E段为一小段凸台，E段端面顶在推杆端面上，所述推杆从左至右依次设有密封圈8、外螺纹9、径向定位面10和轴向安装孔11，所述密封圈8与调节手柄安装体上的光孔内壁形成密封条件，所述外螺纹9与调节手柄安装体上的内螺纹旋合，轴向安装孔设有螺钉连13接调节手柄7，调节手柄7设有紧定螺钉12，顶在推杆径向定位面10上。
差动节流阀可在液压***中构成复合节流调速回路，P孔接泵出口，A孔接负载（液压缸或液压马达），T孔接油箱。

Claims (3)

1.一种差动节流阀，其特征在于，由阀体、螺塞、弹簧、阀芯、调节手柄安装体、推杆和调节手柄组成，所述阀体为长方体，长度方向中心线上设有通孔，所述通孔是一个台阶孔，左端是小螺纹孔，中部设有两个沉割槽，沉割槽宽度相等，右端是大螺纹孔，所述阀体高度方向设有三个轴线平行的孔，依次为A孔、P孔、T孔，三个孔与台阶孔正交，A孔和T孔的位置与两个沉割槽位置正对，所述台阶孔内装有弹簧和阀芯，所述阀体右端大螺纹孔装有调节手柄安装体，所述阀体左端大螺纹孔装有螺塞，螺塞和阀芯间设有圆柱螺旋弹簧，阀芯右端定位台肩顶在调节手柄安装体左端面上。
2.一种差动节流阀，其特征在于，可在液压***中构成进油加旁路复合节流调速回路，P孔接泵出口，A孔接负载（液压缸或液压马达），T孔接油箱。
3.按照权利要求1所述差动节流阀，其特征在于，所述阀芯为中空的四段台阶轴，从左至右分为B、C、D、E四段，各段同轴，B段和D段直径相等，C段和E段直径相等，B段左端面设有台阶孔，B段右端圆周方向设有均布的三个节流槽，所述节流槽纵截面为三角形，三角形的底边与B段右端重合，三角形的高等于所述阀体沉割槽宽度，节流槽横截面为扇形，C段直径小于B段，C段设有正交通孔，C段长度等于A孔和T孔中心距减去沉割槽宽度加上1毫米，D段左端圆周方向设有均布的三个节流槽，所述节流槽纵截面为三角形，三角形的底边与D段左端重合，三角形的高等于所述阀体沉割槽宽度，节流槽横截面为扇形，扇形半径等于B段节流槽相对位置横截面扇形半径的一半，E段为一小段凸台。
CN201610690945.XA 2016-08-20 2016-08-20 差动节流阀 Expired - Fee Related CN106122517B (zh)

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4401485A1 (de) * 1994-01-21 1995-07-27 Fluid Team Automationstechnik Steuerventil
EP0822361A2 (en) * 1996-08-01 1998-02-04 Smc Corporation Pressure-control valve mounted on a base-mount selector valve
JPH1047510A (ja) * 1996-07-29 1998-02-20 Smc Corp 逆流防止弁付き切換弁
CN1724881A (zh) * 2004-07-23 2006-01-25 沃尔沃建造设备控股（瑞典）有限公司 重型设备的可变快速动作阀
CN102434517A (zh) * 2011-12-01 2012-05-02 宁波华液机器制造有限公司 调速阀
CN202326490U (zh) * 2011-12-01 2012-07-11 宁波华液机器制造有限公司 溢流节流阀
CN202707658U (zh) * 2012-08-16 2013-01-30 北京润菲利德科技有限公司 直动型大流量方向流量伺服阀及应用该伺服阀的控制***
CN203176435U (zh) * 2013-04-09 2013-09-04 大连兴龙液压有限公司 一种电磁节流阀
CN206145186U (zh) * 2016-08-20 2017-05-03 北华大学 差动节流阀

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4401485A1 (de) * 1994-01-21 1995-07-27 Fluid Team Automationstechnik Steuerventil
JPH1047510A (ja) * 1996-07-29 1998-02-20 Smc Corp 逆流防止弁付き切換弁
EP0822361A2 (en) * 1996-08-01 1998-02-04 Smc Corporation Pressure-control valve mounted on a base-mount selector valve
CN1724881A (zh) * 2004-07-23 2006-01-25 沃尔沃建造设备控股（瑞典）有限公司 重型设备的可变快速动作阀
CN102434517A (zh) * 2011-12-01 2012-05-02 宁波华液机器制造有限公司 调速阀
CN202326490U (zh) * 2011-12-01 2012-07-11 宁波华液机器制造有限公司 溢流节流阀
CN202707658U (zh) * 2012-08-16 2013-01-30 北京润菲利德科技有限公司 直动型大流量方向流量伺服阀及应用该伺服阀的控制***
CN203176435U (zh) * 2013-04-09 2013-09-04 大连兴龙液压有限公司 一种电磁节流阀
CN206145186U (zh) * 2016-08-20 2017-05-03 北华大学 差动节流阀

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