CN100535440C - 混凝土泵用润滑***增压阀 - Google Patents

混凝土泵用润滑***增压阀 Download PDF

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CN100535440C
CN100535440C CNB2005100314796A CN200510031479A CN100535440C CN 100535440 C CN100535440 C CN 100535440C CN B2005100314796 A CNB2005100314796 A CN B2005100314796A CN 200510031479 A CN200510031479 A CN 200510031479A CN 100535440 C CN100535440 C CN 100535440C
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valve
spool
rear end
valve body
valve pocket
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CN1854522A (zh
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何扬东
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Changsha Haiyida Machinery Equipment Co Ltd
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Priority to PCT/CN2006/000775 priority patent/WO2006114049A1/zh
Priority to US11/912,390 priority patent/US20090127028A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
    • F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
    • F04B9/103—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber
    • F04B9/107—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber rectilinear movement of the pumping member in the working direction being obtained by a single-acting liquid motor, e.g. actuated in the other direction by gravity or a spring

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Check Valves (AREA)

Abstract

一种混凝土泵用润滑***增压阀，由阀体(1)、阀芯(2)和弹簧(3)组成，阀芯(2)轴向截面呈凸字形，其后端柱体(22)接单向阀(21)；阀体(1)前端阀腔(15)接单向阀(13)，阀体(1)上有气孔(12)和分油孔(11)。当出口压力低于入口压力时，润滑脂经单向阀(21、13)输出，高于入口压力时，润滑脂推动阀芯(2)右移，腔内润滑脂增压后经单向阀(13)输出；当阀芯(2)右移越过分油孔(11)时，入口润滑脂通过分油口(11)输出；停止入口供脂时，弹簧(3)推动阀芯(2)左移复位，经单向阀(21)向增压腔内充脂。上述特性使润滑***可靠性提高并降低了维护成本。

Description

混凝土泵用润滑***增压阀
技术领域
本发明涉及一种混凝土泵用润滑***增压阀。
背景技术
混凝土泵的润滑***在混凝土泵中完成对混凝土缸活塞、分配阀轴承和密封、搅拌装置轴承和密封的润滑保护功能。现有的润滑***，一种是自动润滑***，它由自动油脂泵+分油器+各润滑点接头和连接油管构成；一种是手动润滑***，它由手动油脂泵+各润滑点接头和连接油管构成，或由手动黄油枪+各润滑点接头构成。各润滑点接头选用普通管接头、单向阀接头或油嘴，他们都没有伺服增压阀。当混凝土泵工作在高压区时，自动润滑***常因各润滑点润滑阻力升高(如混凝土泵出口和混凝土缸活塞的润滑点)而出现***工作失常、例如润滑脂进不了润滑点，甚至出现油脂泵或分油器被卡死的情况；而手动润滑***则由于工作程序的繁琐、操作人员素质的差异或***性能等方面的因素而影响润滑可靠性。上述缺陷往往导致了润滑***的工作不稳定、各润滑保护对象工作寿命下降乃至故障率升高，从而对混凝土泵的工作可靠性产生不利影响，并增加产品的制造和维护成本。
发明内容
本发明要解决的技术问题是，针对现有技术存在的缺陷，提供一种增压阀，该阀能将油脂泵提供的润滑脂增压后注入各润滑点，从而可有效地克服润滑阻力，提高混凝土泵润滑***的工作性能和可靠性，同时降低维护成本。
本发明的技术解决方案是，提供一种混凝土泵用润滑***增压阀，参见图1，该阀由阀体1、阀芯2和弹簧3组成，上述阀芯2置于阀体1内腔，其技术特点是，所述阀芯2轴向截面呈凸字形，其前端柱体23截面面积小于后端柱体22截面面积；
所述阀体1亦具有与上述阀芯2大小匹配的由前端阀腔15与后端阀腔14组成的阀腔，前端阀腔15出口一端管通连接一单向阀13，阀体1对应后端阀腔14处径向开有气孔12，阀体1对应后端阀腔14入口处径向开有分油孔11；
所述弹簧3套装在阀体1阀腔内的阀芯2上，其一端紧贴阀芯2后端柱体22，另一端顶压在阀体1后端阀腔14的前端底面上。
本发明的工作原理是，参见图1，从图1可以看到，本发明的混凝土泵用润滑***增压阀其A口接润滑***，B口接润滑点，润滑脂从A口进入增压阀，从B口输出。当增压阀出口压力(B口压力)低于其入口压力(A口压力)时，润滑脂直接经单向阀21和单向阀13从B口输出；当B口压力(润滑阻力)高于A口压力时，A口润滑脂压力作用于阀芯2后端柱体22端面上，推动其向右移动，阀芯2上前端柱体23将E腔润滑脂增压后经单向阀13从B口输出；当阀芯2右移至其后端柱体22端面越过阀体1上的分油口11时，A口润滑脂通过分油口11输出；当停止向A口供脂时，弹簧3推动阀芯2向左移动复位，A口润滑脂经单向阀21向E腔充脂，为下次输出作好准备；气孔12使弹簧3所在阀腔与大气相通，使阀芯2的滑移不被憋死。
本发明的有益效果是，增压阀的上述特性使润滑***的可靠性和工作性能均得到有效的提高和增强，并因此降低了维护成本。
附图说明
图1是本发明的混凝土泵用润滑***增压阀结构示意图。
图中标记为：1-阀体，
11-分油孔，
12-气孔，
13-单向阀，
14-后端阀腔
15-前端阀腔
2-阀芯
21-单向阀，
22-后端柱体
23-前端柱体
24-中心油孔
3-弹簧
具体实施方式
按照图1和上述结构的本发明之一种混凝土泵用润滑***增压阀的实施例，有阀体1、带中心油孔24的阀芯2和弹簧3，阀芯2同轴线置于阀体1内腔，阀芯2轴向截面呈凸字形，其前端柱体23截面面积小于后端柱体22截面面积，后端柱体22连接前端柱体23一端的另一端管通连接一单向阀21；单向阀21采用规格为M10×1的市售油嘴。
阀体1亦具有与上述阀芯2大小匹配的阀腔，该阀腔由前端阀腔15与后端阀腔14组成，前端阀腔15出口一端管通连接单向阀13，单向阀13采用规格为M10×1的市售油嘴。阀体1对应后端阀腔14处径向开有气孔12，而对应后端阀腔14入口处径向开凿有分油孔11；
弹簧3套装在阀芯2上，一端紧贴阀芯2后端柱体22，另一端顶压在阀体1后端阀腔14的前端底面上，弹簧3的规格与上述阀芯2的规格匹配。

Claims (1)

1、一种混凝土泵用润滑***增压阀，由阀体(1)、阀芯(2)和弹簧(3)组成，上述阀芯(2)置于阀体(1)内腔，其特征在于，所述阀芯(2)轴向截面呈凸字形，其前端柱体(23)截面面积小于后端柱体(22)截面面积，所述阀体(1)亦具有与上述阀芯(2)大小匹配的由前端阀腔(15)与后端阀腔(14)组成的阀腔，前端阀腔(15)出口一端管通连接一单向阀(13)，阀体(1)对应后端阀腔(14)处径向开有气孔(12)，阀体(1)对应后端阀腔(14)入口处径向开有分油孔(11)，所述弹簧(3)套装在阀体(1)阀腔内的阀芯(2)上，其一端紧贴阀芯(2)后端柱体(22)，另一端顶压在阀体(1)后端阀腔(14)的前端底面上，所述阀芯(2)的后端柱体(22)连接前端柱体(23)一端的另一端管通连接一单向阀(21)。
CNB2005100314796A 2005-04-25 2005-04-25 混凝土泵用润滑***增压阀 Expired - Fee Related CN100535440C (zh)

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Application Number Priority Date Filing Date Title
CNB2005100314796A CN100535440C (zh) 2005-04-25 2005-04-25 混凝土泵用润滑***增压阀
PCT/CN2006/000775 WO2006114049A1 (fr) 2005-04-25 2006-04-24 Valve auxiliaire pour système de lubrification à pompe de transfert de béton
US11/912,390 US20090127028A1 (en) 2005-04-25 2006-04-24 Boost Valve for a Concrete Transfer Pump Lubricating System

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CNB2005100314796A CN100535440C (zh) 2005-04-25 2005-04-25 混凝土泵用润滑***增压阀

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CN100535440C true CN100535440C (zh) 2009-09-02

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CN110043783A (zh) * 2019-04-18 2019-07-23 黑龙江大学 增压可控式注油装置及注油方法

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IN2012DN01588A (zh) * 2009-08-28 2015-06-05 Bob Ifield Holdings Pty Ltd
CN103629366B (zh) * 2013-11-06 2016-03-02 中联重科股份有限公司 增压阀及润滑***
CN107270085A (zh) * 2017-08-15 2017-10-20 西山煤电(集团)有限责任公司 矿车注油机
US10995775B2 (en) 2019-02-05 2021-05-04 Ford Global Technologies, Llc Hydraulic boost valve
CN111810824B (zh) * 2020-06-22 2021-11-19 东莞市新美洋技术有限公司 气缸保养***
CN114704676B (zh) * 2022-04-25 2022-12-02 中联重科股份有限公司 单向阀及具有单向阀的液压控制装置

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CN110043783B (zh) * 2019-04-18 2021-07-13 黑龙江大学 增压可控式注油装置及注油方法

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CN1854522A (zh) 2006-11-01
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