CN1596070A - 利用连续计量和校正的电子定量给料器 - Google Patents

利用连续计量和校正的电子定量给料器 Download PDF

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CN1596070A
CN1596070A CNA028235452A CN02823545A CN1596070A CN 1596070 A CN1596070 A CN 1596070A CN A028235452 A CNA028235452 A CN A028235452A CN 02823545 A CN02823545 A CN 02823545A CN 1596070 A CN1596070 A CN 1596070A
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CN100506023C (zh
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大卫·皮特曼
乌·阮
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Graco Minnesota Inc
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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
    • F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/20—Measuring; Control or regulation
    • B01F35/21—Measuring
    • B01F35/211—Measuring of the operational parameters
    • B01F35/2112—Level of material in a container or the position or shape of the upper surface of the material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/80—Forming a predetermined ratio of the substances to be mixed
    • B01F35/88—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise
    • B01F35/882—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise using measuring chambers, e.g. volumetric pumps, for feeding the substances
    • B01F35/8821—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise using measuring chambers, e.g. volumetric pumps, for feeding the substances involving controlling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/80—Forming a predetermined ratio of the substances to be mixed
    • B01F35/88—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise
    • B01F35/882—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise using measuring chambers, e.g. volumetric pumps, for feeding the substances
    • B01F35/8822—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise using measuring chambers, e.g. volumetric pumps, for feeding the substances using measuring chambers of the piston or plunger type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44D—PAINTING OR ARTISTIC DRAWING, NOT OTHERWISE PROVIDED FOR; PRESERVING PAINTINGS; SURFACE TREATMENT TO OBTAIN SPECIAL ARTISTIC SURFACE EFFECTS OR FINISHES
    • B44D3/00—Accessories or implements for use in connection with painting or artistic drawing, not otherwise provided for; Methods or devices for colour determination, selection, or synthesis, e.g. use of colour tables
    • B44D3/06—Implements for stirring or mixing paints
    • B44D3/08—Implements for stirring or mixing paints for liquid or semi-liquid paints
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/02—Stopping, starting, unloading or idling control
    • F04B49/03—Stopping, starting, unloading or idling control by means of valves
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D11/00—Control of flow ratio
    • G05D11/005—Control of flow ratio using synchronised pumps
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D11/00—Control of flow ratio
    • G05D11/02—Controlling ratio of two or more flows of fluid or fluent material
    • G05D11/13—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means
    • G05D11/131—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means by measuring the values related to the quantity of the individual components
    • G05D11/133—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means by measuring the values related to the quantity of the individual components with discontinuous action
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/6851—With casing, support, protector or static constructional installations
    • Y10T137/6855—Vehicle
    • Y10T137/6914—Vehicle supports fluid compressor and compressed fluid storage tank
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/85978—With pump
    • Y10T137/86131—Plural
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/85978—With pump
    • Y10T137/86131—Plural
    • Y10T137/86163—Parallel

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Reciprocating Pumps (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Accessories For Mixers (AREA)
  • Details Of Reciprocating Pumps (AREA)

Abstract

多种组分的定量给料器(10)的控制器同时(至少在初始时)分配两种成分(或者如果是三种组分材料的话，同时分配共三种材料)，并通过确定那个组分泵(12)已经达到期望量的行程(可获得给定的分辨率)，并利用阀(16)以切断泵的输出，直到其它侧追上，保持每种预定量材料的最终比率。在泵转换时，泵(12)的输出阀切断，气动马达(12a)允许运行，直到行程停止，以解决气穴现象、空气进入、可压缩性或差的入口校验性能带来的问题。

Description

利用连续计量和校正的电子定量给料器
技术领域
相关申请包括申请号为60/186405，2000年3月2日申请的美国专利申请，申请号为PCT/US01/069，2001年3月2日申请的PCT申请，和申请号为60/333697，2001年11月27日申请的美国专利申请。
背景技术
例如上述申请中所示和所描述的定量给料器，在市场上由本申请的受让人以商标VALUEMIX销售，这些申请在此提供作为参考。
本发明的公开内容
在本发明中，一对(或更多)气动往复活塞泵(例如由本申请的受让人以商标KINGTM销售的)中的每个设有线性位移传感器，该线性位移传感器能够传达(如前述申请所述)气动马达和泵杆的线性位置的精确指示读数。还设有一种与每个泵的输出连接的可控阀。
与前述VALUEMIX(其顺序地分配第一种成分，然后分配其它多个组分材料)不同，本发明的控制器同时分配两种成分(或者如果是三种组分材料的话，分配共三种材料)，并保持每种预定量材料的最终比率。
例如，如果材料要求2∶1(对于成分A和B)的比率，最初打开两个阀。然后，控制器首先查看哪侧已经达到其目标(A侧为2，B侧为1)，则在该侧关闭阀，直到另一侧追上并达到其目标。
气穴现象，空气进入，可压缩性，或差的入口校验性能都能导致泵行程和流体分配之间的相互关系损失。下述工艺意在校正这些问题。首先，控制器确定何时泵转换。(通过以前的循环这是可以预测的，或者可以从LDT读数观察到)。然后，控制器关闭流体阀。这样，允许泵压缩任意气体，并确实关闭止回阀。当泵停止运转时，流体阀阀再次开启。在该点泵的位置是该冲程中分配流体的起始值。
通过下面的描述并结合附图，本发明的这些和其它目的与优点将变的更充分和清楚，在整个附图中，相同的参考标号代表相同或类似的部件。
附图的简要描述
图1是本发明的前透视图。
图2是本发明的后透视图。
实施本发明的最佳方式
在本发明10中，一对(或更多)气动往复活塞泵12(例如由本申请的受让人以商标KINGTM销售的)中的每个设有线性位移传感器(LDT)14，该线性位移传感器能够传达(如前述申请所述)气动马达12a和泵杆12b的线性位置的精确指示读数。当然任意往复式动力源可用来给泵杆12b提供动力。LDT 14提供以行程或分辨率为单位的输出，该行程或分辨率可随使用的型号而变化。在优选的实施例中，分辨率可以在1/4至1/2英寸的范围内。还设有一种与每个泵12的输出连接的可控阀16。
与前述现有技术的VALUEMIX(顺序地分配第一种成分，然后分配其它多种组分材料)不同，本发明的控制器同时(至少在初始时)分配两种成分(或者如果是三种组分材料的话，同时分配共三种材料)，并保持每种预定量材料的最终比率。
例如，如果材料要求2∶1(对于成分A和B)的比率，最初打开两个阀。然后，控制器18首先查看哪侧已经达到其目标(A侧为2个单位行程，B侧为1个单位行程)，则在该侧关闭阀，直到另一侧追上并达到其目标。这样，系统确实地控制两侧，而不是如一般所发生的，让一侧运行并试图与另一侧相一致。
气穴现象，空气进入，可压缩性，或差的入口校验性能都能导致泵行程和流体分配之间的相互关系损失。下述工艺意在校正这些问题。首先，控制器确定何时泵转换。(通过以前的循环这是可以预测的，或者可以从LDT读数观察到)。然后，控制器关闭流体阀。这样，允许泵压缩任意气体，并确实关闭止回阀。当泵停止运转时，流体阀再次开启。在该点泵的位置是该冲程中分配流体的起始值。
空气压力能够变化，以便有效地使两个泵同时和连续地运行。而且，控制可以调整为控制流量而非压力。如果需要并且可获得足够的长度，软管可用作积分器，以帮助混合。在另一个替代的实施例中，较低容量侧或材料可在较高压力下并利用单个定量阀运行。
交界面分成三部分。基本部分是运行和停止钮。盖子下是显示比率的显示器，循环计数器和四位旋转开关用于
●运行
●试验
●独立运行A泵
●独立运行B泵
●具有小数点的5数字位7段以显示比率
●发光“起动”按钮(发光同时运行)，瞬间，非锁存
●停止按钮—瞬间，非锁存
●比率调整增量为0.1，范围在0至10。
●在数字显示器中显示的错误代码(例如E：27)
下面是操作模式：
运行(比例)：打开两个流体阀。监控每个泵的行程。如果一个泵在另一个泵前面不成比例地运动，关闭其流体阀。监控其余泵的行程。一旦后面的泵追上，打开其它流体阀。重复。
在运行模式和泵试验模式中，控制器补偿与顶转换有关的物理问题。气穴现象，空气进入，可压缩性，或差的入口校验性能都能导致泵行程和流体分配之间的相互关系损失。下述算法意在校正这些问题。
确定何时泵已经转换。(通过以前的循环这是可以预测的，或者可以从LDT读数观察到)。关闭流体阀。这样，允许泵压缩任意气体，并确实关闭止回阀。当泵停止运转时，流体阀再次开启。在该点泵的位置是该冲程中分配流体的起始值。
独立运行：就像一般泵一样，使任一个(且仅一个)泵运行。流体阀在整个循环中不断打开。在小于500ms内不再重复转换(失控控制)。在5个循环后停止。
泵试验：使每个泵运行3个完整循环加上必要的额外距离，以便补偿顶转换误差。(参见描述转换误差补偿算法的运行模式)。在每个冲程中间阶段，关闭流体阀一次，并测量时间延迟，直到泵停止运转。这检查故障流体阀，活塞填料或止回阀，或进给阀故障。
停止：流体阀和气阀关闭。
误差：停止模式的特殊情况。流体阀和回路循环阀关闭。误差必须“得以确认”。
校准：每个LDT具有不同的偏移量和增益。控制器需要该数据以便适当地工作。
在不超出由附后的权利要求书所限定的本发明的实质和范围的前提下，定量给料器可作不同的修改和变化。

Claims (3)

1.一种用于分配多种组分材料的方法，该多种组分材料具有以预定比率混合的至少第一和第二组分，一种设备具有与所述第一和第二组分连接的第一和第二往复式泵，每个所述泵具有位移传感器和在所述泵出口处的阀，该方法的步骤包括：
预先确定每个所述传感器的输出，该输出对应于所述传感器的分辨率和所述预定比率；
使所述第一和第二泵运行，且所述阀打开，直到其中一个所述传感器达到所述预定输出；
关闭与已经达到所述预定输出的泵有关的阀，并继续使其余的所述泵运行，直到该泵达到所述预定的输出。
2.如权利要求1所述的方法，其特征在于其步骤还包括：
当与流体阀相关的泵实现转换时，关闭每个所述流体阀，以允许所述泵压缩任意气体，并确实关闭止回阀；和
当所述泵停止运转时，打开泵阀；和
当所述阀关闭时，在一部分循环期间，忽略任何行程和输入的流量。
3.一种用于在具有止回阀的往复式泵中对转换进行补偿的方法，所述泵具有位移传感器和位于所述泵的出口的阀，该方法的步骤包括：
当泵实现转换时，关闭所述流体阀，以允许所述泵压缩任意气体，并确实关闭止回阀；和
当所述泵停止运转时，打开流体阀；和
当所述阀关闭时，在一部分循环期间，忽略任何行程和输入的流量。
CNB028235452A 2001-11-27 2002-11-27 多种组分材料的分配方法和往复式泵中转换的补偿方法 Expired - Lifetime CN100506023C (zh)

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Cited By (8)

* Cited by examiner, † Cited by third party
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CN102498446A (zh) * 2009-03-26 2012-06-13 格雷索明尼苏达有限公司 使用连续测量和校正的电子比例调节器
CN102725705A (zh) * 2010-01-22 2012-10-10 艾格赛尔工业集团 用于计量和混合具有多组分的产品的系统的控制方法、计量和混合系统以及包括该系统的喷雾或挤出装置
CN103002979A (zh) * 2010-06-24 2013-03-27 格瑞克明尼苏达有限公司 具有可调节的马达位置的双泵式流体比例调节器
CN108671841A (zh) * 2017-08-30 2018-10-19 黄河科技学院 化学流体材料调节装置
CN109954607A (zh) * 2013-07-19 2019-07-02 固瑞克明尼苏达有限公司 用于喷涂系统的泵转换算法
US10670002B2 (en) 2014-12-17 2020-06-02 Graco Minnesota Inc. Plural component proportioner comprising a first pump and a second pump simultaneously driven by a motor connected to the pumps by a yoke assembly comprising a shoe, a tie plate including a slot, and a tie rod
CN113058485A (zh) * 2021-03-19 2021-07-02 刘凤英 一种急诊科室消毒液无间断混合设备
US11148152B2 (en) 2013-07-19 2021-10-19 Graco Minnesota Inc. Pump changeover algorithm for spray system

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US20060144447A1 (en) 2006-07-06
WO2003045130A1 (en) 2003-06-05
US8851111B2 (en) 2014-10-07
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