WO2014101474A1 - 一种润滑脂集中输送协同系统 - Google Patents

一种润滑脂集中输送协同系统 Download PDF

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Publication number
WO2014101474A1
WO2014101474A1 PCT/CN2013/083201 CN2013083201W WO2014101474A1 WO 2014101474 A1 WO2014101474 A1 WO 2014101474A1 CN 2013083201 W CN2013083201 W CN 2013083201W WO 2014101474 A1 WO2014101474 A1 WO 2014101474A1
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WIPO (PCT)
Prior art keywords
cylinder
grease
lubricating grease
reciprocating frame
booster
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PCT/CN2013/083201
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English (en)
French (fr)
Inventor
程延海
朱真才
潘家保
黄日恒
陈国安
韩振铎
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中国矿业大学
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Publication of WO2014101474A1 publication Critical patent/WO2014101474A1/zh

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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
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
    • 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
    • F04B23/00—Pumping installations or systems
    • F04B23/04—Combinations of two or more pumps
    • F04B23/06—Combinations of two or more pumps the pumps being all of reciprocating positive-displacement type
    • 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
    • F16N—LUBRICATING
    • F16N13/00—Lubricating-pumps
    • F16N13/02—Lubricating-pumps with reciprocating piston
    • 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
    • F16N—LUBRICATING
    • F16N13/00—Lubricating-pumps
    • F16N13/02—Lubricating-pumps with reciprocating piston
    • F16N13/06—Actuation of lubricating-pumps
    • F16N13/10—Actuation of lubricating-pumps with mechanical drive
    • 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
    • F16N—LUBRICATING
    • F16N13/00—Lubricating-pumps
    • F16N13/02—Lubricating-pumps with reciprocating piston
    • F16N13/06—Actuation of lubricating-pumps
    • F16N13/16—Actuation of lubricating-pumps with fluid drive

Definitions

  • the invention relates to a grease centralized conveying synergy system, in particular to a conveying system suitable for high-viscosity grease (No. 3 and No. 4 grease) suitable for mechanical transmission.
  • the lubrication methods in mechanical transmission are mainly divided into: oil lubrication and grease lubrication.
  • Oil lubrication is mainly used in high-speed and light-load applications, while grease lubrication is used in low-speed and heavy-duty applications.
  • the equipment of mining machinery and engineering machinery mostly belong to large-scale heavy-duty equipment, and the lubrication methods used in the rotating parts are basically grease lubrication.
  • Grease is divided into: 00, 1, 2, 3, 4, etc. The higher the grade, the greater the viscosity of the grease, and the longer the lubrication effect and retention time.
  • the grease supply of grease mainly includes: grease gun grease supply, grease cup filling grease, grease pump filling centralized grease supply, etc.
  • centralized grease supply is the mainstream direction of future development.
  • Grease guns and grease cups are suitable for grease grades 1, 2, and 3; concentrated grease is only suitable for high-cone grease (such as greases 00 and 1). Due to the high viscosity and low taper of the greases No. 3 and No. 4, it is difficult to achieve centralized grease supply.
  • the object of the present invention is to overcome the deficiencies in the prior art and to provide a grease centralized conveying synergy system with simple structure and convenient operation.
  • the grease centralized conveying synergy system of the invention comprises an eccentric wheel, a reciprocating frame, a rod member, a cylinder, a grease cylinder, a cylinder piston, a grease cylinder piston, a boosting cylinder and a check valve, wherein: the eccentric wheel and the reciprocating frame
  • the inner surface is tangent, and the left and right sides of the reciprocating frame are provided with a rod member 1 and a rod member 3.
  • the upper end of the reciprocating frame is provided with a rod member 2.
  • the rod member on the right side of the reciprocating frame is connected with the piston of the cylinder, and the left side of the reciprocating frame
  • the rod member 3 is connected with the piston of the grease cylinder of the grease cylinder, the inlet of the cylinder is provided with a one-way valve, the outlet of the cylinder is connected with the low pressure chamber of the boosting cylinder, and the one-way valve is provided between the cylinder and the boosting cylinder.
  • the inlet of the grease cylinder is connected with the high pressure chamber of the booster cylinder, and the check valve 3 is arranged between the grease cylinder and the booster cylinder.
  • the outlet pipe of the grease cylinder is connected with the lubrication hole of the machine to be lubricated, and the grease cylinder
  • the outlet pipe is provided with a check valve 4;
  • the front chamber of the booster cylinder is in communication with the grease pipeline;
  • the grease pipeline connected to the booster cylinder is provided with a check valve 5.
  • the invention adopts the eccentric wheel to realize a large thrust, and realizes the transportation of the high-viscosity grease (the grease of No. 3 and No. 4) through the cylinder provided at one end and the grease cylinder provided at the other end, thereby realizing the grease of such brand.
  • Concentrated fat supply During operation, the compressed gas on the right side of the cylinder generates a thrust and the grease cylinder on the left side generates a pulling force at the same time, so that the grease can be smoothly sucked into the grease cylinder; the structure is simple and can effectively transport the grease Go to the corresponding lubrication point.
  • Figure 1 is a schematic diagram of the overall system of the present invention
  • the grease centralized conveying synergy system of the present invention is mainly composed of an eccentric wheel 1, a reciprocating frame 2, a rod member 3, 10, a cylinder 4, a grease cylinder 11, a boosting cylinder 7, a rod member, and a check valve.
  • the eccentric wheel 1 is tangential to the inner surface of the reciprocating frame 2, and the reciprocating frame 2 is reciprocated by the rotation of the eccentric wheel 1.
  • the left and right sides of the reciprocating frame 2 are provided with a rod member 3 and a rod member 10, and the upper end of the reciprocating frame 2 is provided with a rod member 2, and the eccentric wheel 1 rotates to drive the reciprocating movement of the reciprocating frame 2, and the right side of the reciprocating frame 2
  • the rod member 3 is connected to the piston 4a of the cylinder 4
  • the rod member 10 on the left side of the reciprocating frame 2 is connected to the piston 11a of the grease cylinder of the grease cylinder 11, and the inlet of the cylinder 4 is provided with a check valve 5, cylinder 4
  • the outlet is connected to the low pressure chamber of the booster cylinder 7, and the check valve 2 is disposed between the cylinder 4 and the booster cylinder 7.
  • the inlet of the grease cylinder 11 is connected to the high pressure chamber of the booster cylinder 7, and the grease cylinder 11 is A check valve 3 is disposed between the booster cylinders 7.
  • the outlet line of the grease cylinder 11 is connected to the lubrication hole of the machine to be lubricated, and the check valve of the grease cylinder 11 is provided with a check valve 412.
  • the front chamber of the booster cylinder 7 is in communication with the grease line, and the one-way valve 5 is provided on the grease line that is in communication.
  • the eccentric wheel 1 is tangent to the inner surface of the reciprocating frame 2, and the eccentric wheel 1 rotates to drive the reciprocating frame 2 to reciprocate back and forth.
  • the rods 3 and 3 of the left and right sides of the reciprocating frame 2 are respectively connected to the cylinder 4 and the grease cylinder 11, and the rods at both ends of the reciprocating frame 2 reciprocate to reciprocate the piston.
  • the rodless chambers of the cylinder 4 and the grease cylinder 11 are provided with an inlet and an outlet, respectively.
  • the inlet of the right cylinder 4 is provided with a check valve 5, the outlet is connected with the inlet X of the booster cylinder 7, and the check valve 2 is provided in the middle.
  • the inlet check valve 5 of the cylinder 4 is opened, the check valve 2 of the cylinder 4 is closed, and the gas is sucked into the cylinder 4; the cylinder piston 4a is moved to the right and the air is compressed.
  • the check valve 5 is closed, and the air outlet check valve 2 is opened to press the gas into the booster cylinder 7.
  • the grease outlet of the grease cylinder 11 is connected to the lubrication hole of the machine to be lubricated, the check valve 4 is provided in the grease pipeline, the grease inlet of the grease cylinder 11 and the booster cylinder 7
  • the high pressure chamber Y port is connected, and the check valve 3 is arranged in the middle.
  • the high pressure chamber of the booster cylinder 7 is filled with grease, and the injection of the grease is performed by the high pressure chamber inlet port Z of the booster cylinder 7 for grease injection.
  • the piston in the grease cylinder 11 moves to the right, the volume of the grease cylinder 11 becomes large, and a negative pressure is generated.
  • the check valve 3 of the grease inlet port is opened, the grease outlet check valve 4 is closed, and the grease is sucked.
  • the check valve 3 of the grease cylinder grease inlet c is closed, and the check valve of the grease cylinder grease outlet d is turned on, and the grease is greased.
  • the grease in the cylinder 11 is pressed against the lubrication hole of the machine to be lubricated.
  • the air pressure of the cylinder 4 and the liposuction of the grease cylinder 11 are simultaneously performed, so that the suction and the movement are matched, and the force in both directions can effectively feed the high viscosity grease into the grease cylinder.

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

Abstract

公开了一种润滑脂集中输送协同系统，包括偏心轮（1）、往复框（2）、杆件、气缸（4）、润滑脂缸（11）、气缸活塞（4a）、润滑脂缸活塞（11a）、增压缸（7）、单向阀，偏心轮（1）与往复框（2）的内表面相切，往复框（2）两侧的杆件分别与气缸（4）和润滑脂缸（11）的活塞连接，增压缸（7）的前腔与润滑脂管路相连通。通过气缸（4）压气推动增压缸（7），从而将增压缸（7）高压腔的润滑脂送入润滑脂缸（11）中，同时也推动润滑脂缸（11）中的活塞向右运动，润滑脂缸（11）产生负压，对润滑脂产生吸力的作用。通过吸拉运动，对润滑脂进行协同输送。该润滑脂集中输送协同系统能有效地输送粘度较大的润滑脂，结构简单，效果好。

Description

一种润滑脂集中输送协同系统 技术领域
本发明涉及一种润滑脂集中输送协同系统，尤其是一种适用于机械传动中用于高粘度润滑脂（3、4号润滑脂）的输送系统。
 背景技术
目前，机械传动中的润滑方式主要分为：油润滑和脂润滑。油润滑适用的场合主要是在高速、轻载的场合，而脂润滑则使用在低速、重载的场合。矿山机械和工程机械的装备多属于大型重载装备，转动部位所使用的润滑方式基本都是脂润滑。润滑脂按照牌号分为：00、1、2、3、4号等，牌号越高，润滑脂的粘度越大，润滑效果和保持时间越长。目前，润滑脂的供脂主要有：脂枪供脂、脂杯加注脂、润滑脂泵加注集中供脂等方式，集中供脂是未来发展的主流方向。用脂枪、脂杯加注的方式适用的润滑脂牌号为1、2、3号；采用集中供脂仅适用于高锥入度的润滑脂（如00和1号润滑脂）。由于3和4号润滑脂粘度大、锥入度低，集中供脂实现起来较为困难，目前还没有一种泵送装置能够完成这种高粘度润滑脂泵的输送。
 技术问题
本发明的目的是克服现有技术中的不足，提供一种结构简单、操作方便的润滑脂集中输送协同系统。
 技术解决方案
本发明的润滑脂集中输送协同系统，包括偏心轮、往复框、杆件、气缸、润滑脂缸、气缸活塞、润滑脂缸活塞、增压缸、单向阀，其中：偏心轮与往复框的内表面相切，往复框的左右两侧设有杆件一和杆件三，往复框的上端设有杆件二，往复框右侧的杆件一与气缸的活塞连接，往复框左侧的杆件三与润滑脂缸的润滑脂缸的活塞连接，气缸的进口设有单向阀一，气缸的出口与增压缸的低压腔相连，气缸与增压缸之间设有单向阀二，润滑脂缸的进口与增压缸的高压腔相连，润滑脂缸与增压缸之间设有单向阀三，润滑脂缸的出口管路与待润滑机器的润滑孔相连，润滑脂缸的出口管路上设单向阀四；所述增压缸的前腔与润滑脂管路相连通；所述与增压缸相连通的润滑脂管路上设有单向阀五。
 有益效果
本发明采用偏心轮可以实现较大的推力，通过设在一端的气缸和设在另一端的脂缸实现高粘度润滑脂（3、4号润滑脂）的输送，从而实现此类牌号润滑脂的集中供脂。在运转过程中，气缸右侧压缩气体产生一个推力而左侧的脂缸活塞同时产生一个拉力，这样，可以顺利地将润滑脂吸入润滑脂缸中；该结构简单，可以有效地将润滑脂输送到相应润滑点处。
 附图说明
图1是本发明的整体系统原理图
图中：1—偏心轮， 2—往复框， 3—杆件一 ，4—气缸， 4a—气缸活塞，5—单向阀一， 6—单向阀二 ，7—增压缸，8—杆件二， 9—单向阀三， 10—杆件三，11—润滑脂缸， 11a—润滑脂缸活塞，12—单向阀四， 13—单向阀五， X—进气口， Y—出脂口，Z—进脂口， a气缸进气口，b气缸出口， c润滑脂缸润滑脂进口， d润滑脂缸润滑脂出口。
 本发明的实施方式
下面结合附图对本发明的实施例作进一步描述：
本发明的润滑脂集中输送协同系统，主要由偏心轮1、往复框2、杆件3、10、气缸4、润滑脂缸11、增压缸7、杆件、单向阀构成。其中：偏心轮1与往复框2的内表面相切，通过偏心轮1转动带动往复框2做来回往复运动。往复框2的左右两侧设有杆件一3和杆件三10，往复框2的上端设有杆件二8，偏心轮1转动，带动往复框2的往复运动，往复框2右侧的杆件一3与气缸4的活塞4a连接，往复框2左侧的杆件三10与润滑脂缸11的润滑脂缸的活塞11a连接，气缸4的进口设有单向阀一5，气缸4的出口与增压缸7的低压腔相连，气缸4与增压缸7之间设有单向阀二6，润滑脂缸11的进口与增压缸7的高压腔相连，润滑脂缸11与增压缸7之间设有单向阀三9，润滑脂缸11的出口管路与待润滑机器的润滑孔相连，润滑脂缸11的出口管路上设单向阀四12。所述增压缸7的前腔与润滑脂管路相连通，相连通的润滑脂管路上设有单向阀五13。
　　工作原理及工作过程：偏心轮1与往复框2的内表面相切，偏心轮1转动带动往复框2作来回往复运动。往复框2两端的左右两侧的杆件一3和杆件三10分别连接气缸4和润滑脂缸11，往复框2两端的杆件作往复移动即为活塞的往复运动。气缸4和润滑脂缸11的无杆腔分别设有进口和出口。其中，右侧气缸4进口设单向阀一5，出口与增压缸7的入口X相连，中间设单向阀二6。活塞向左运动吸气过程中，气缸4的进口单向阀一5打开、气缸4出口单向阀二6关闭，将气体吸入气缸4中；气缸活塞4a向右运动压气过程中，进气口单向阀一5关闭、出气口单向阀二6打开，将气体压入增压缸7中。左侧为润滑脂缸11，润滑脂缸11的出脂口与待润滑机器的润滑孔相连，润滑脂管路中设单向阀四12，润滑脂缸11的进脂口与增压缸7的高压腔Y口相连，中间设单向阀三9，增压缸7的高压腔装有润滑脂，润滑脂的注入是靠增压缸7的高压腔进脂口Z进行注脂。润滑脂缸11中活塞向右运动时，润滑脂缸11的容积变大，产生负压，此时进脂口的单向阀三9打开，出脂口单向阀四12关闭，吸入润滑脂；润滑脂缸11中的润滑脂缸活塞11a向左运动时，润滑脂缸润滑脂进口c的单向阀三9关闭，润滑脂缸润滑脂出口d的单向阀四12打开，将润滑脂缸11中的润滑脂压向待润滑机器的润滑孔。气缸4的压气与润滑脂缸11的吸脂是同时进行的，这样，吸拉运动配合，两个方向的力能有效地将高粘度润滑脂送入润滑脂缸中。

Claims (2)

  1. 一种润滑脂集中输送协同系统，其特征在于：它包括偏心轮（1）、往复框（2）、杆件、气缸（4）、润滑脂缸（11）、气缸活塞（4a）、润滑脂缸活塞（11a）、增压缸（7）、单向阀，其中：偏心轮（1）与往复框（2）的内表面相切，往复框（2）的左右两侧设有杆件一（3）和杆件三（10），往复框（2）的上端设有杆件二（8），往复框（2）右侧的杆件一（3）与气缸（4）的活塞（4a）连接，往复框（2）左侧的杆件三（10）与润滑脂缸（11）的润滑脂缸的活塞（11a）连接，气缸（4）的进口设有单向阀一（5），气缸（4）的出口与增压缸（7）的低压腔相连，气缸（4）与增压缸（7）之间设有单向阀二（6），润滑脂缸（11）的进口与增压缸（7）的高压腔相连，润滑脂缸（11）与增压缸（7）之间设有单向阀三（9），润滑脂缸（11）的出口管路与待润滑机器的润滑孔相连，润滑脂缸（11）的出口管路上设单向阀四（12）；所述增压缸（7）的前腔与润滑脂管路相连通。
  2. 根据权利要求1所述的一种润滑脂集中输送协同系统，其特征在于：所述与增压缸（7）相连通的润滑脂管路上设有单向阀五（13）。
PCT/CN2013/083201 2012-12-25 2013-09-10 一种润滑脂集中输送协同系统 WO2014101474A1 (zh)

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CN103016935A (zh) * 2012-12-25 2013-04-03 中国矿业大学 一种润滑脂集中输送协同系统
CN107101903A (zh) * 2017-06-02 2017-08-29 常州大学 高温高压多相流喷射式冲刷腐蚀实验装置
CN108361230A (zh) * 2018-03-30 2018-08-03 安徽工程大学 一种气动精准间歇供脂控制系统及其供脂方法
CN108506708B (zh) * 2018-03-30 2023-06-23 安徽工程大学 一种可重复利用的供脂装置
CN110410656A (zh) * 2019-06-21 2019-11-05 苏州工艺美术职业技术学院 一种高稠度大流量润滑脂泵送系统

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10148299A (ja) * 1996-11-18 1998-06-02 Hitachi Constr Mach Co Ltd 自動給脂装置
JP2002004335A (ja) * 2000-06-26 2002-01-09 Hitachi Constr Mach Co Ltd 建設機械の自動給脂装置
WO2010017593A1 (en) * 2008-08-13 2010-02-18 Bob Ifield Holdings Pty Ltd Method and apparatus for purging air from automatic lubrication systems
CN102278585A (zh) * 2011-07-05 2011-12-14 山东鲁能集团有限公司 全自动润滑脂注油机
CN103016935A (zh) * 2012-12-25 2013-04-03 中国矿业大学 一种润滑脂集中输送协同系统

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100264657B1 (ko) * 1996-12-31 2000-09-01 정몽규 그리스 도포장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10148299A (ja) * 1996-11-18 1998-06-02 Hitachi Constr Mach Co Ltd 自動給脂装置
JP2002004335A (ja) * 2000-06-26 2002-01-09 Hitachi Constr Mach Co Ltd 建設機械の自動給脂装置
WO2010017593A1 (en) * 2008-08-13 2010-02-18 Bob Ifield Holdings Pty Ltd Method and apparatus for purging air from automatic lubrication systems
CN102278585A (zh) * 2011-07-05 2011-12-14 山东鲁能集团有限公司 全自动润滑脂注油机
CN103016935A (zh) * 2012-12-25 2013-04-03 中国矿业大学 一种润滑脂集中输送协同系统

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