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WO2005078280A1 - A feeding pump device of bulk tube continually metering type - Google Patents

A feeding pump device of bulk tube continually metering type Download PDF

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Publication number
WO2005078280A1
WO2005078280A1 PCT/CN2005/000039 CN2005000039W WO2005078280A1 WO 2005078280 A1 WO2005078280 A1 WO 2005078280A1 CN 2005000039 W CN2005000039 W CN 2005000039W WO 2005078280 A1 WO2005078280 A1 WO 2005078280A1
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WO
WIPO (PCT)
Prior art keywords
tube
volume
piston
metering
pump device
Prior art date
Application number
PCT/CN2005/000039
Other languages
French (fr)
Chinese (zh)
Inventor
Cong Xiao
Original Assignee
Cong Xiao
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cong Xiao filed Critical Cong Xiao
Priority to US10/588,271 priority Critical patent/US20070134107A1/en
Publication of WO2005078280A1 publication Critical patent/WO2005078280A1/en

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Classifications

    • 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
    • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
    • 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
    • F04B13/00—Pumps specially modified to deliver fixed or variable measured quantities
    • 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
    • F04B5/00—Machines or pumps with differential-surface pistons
    • F04B5/02—Machines or pumps with differential-surface pistons with double-acting pistons

Definitions

  • the invention relates to a metering type conveying pump device, in particular to a metering type conveying pump device which can be used at the same time for quantitative output of liquid medium, measurement of liquid medium flow rate, calibration of container volume, and verification of liquid medium flow measuring instruments.
  • the existing volume tube device can only measure part of the medium flowing through the volume tube device, but cannot quantitatively output and measure all the medium flowing through the volume tube device.
  • the purpose of the present invention is to overcome the shortcomings of the existing volume tube device that cannot quantitatively output and measure all the medium flowing through the volume tube device and the existing metering and conveying pump device to quantitatively output and measure "medium" with a large flow rate.
  • the measurement method is based on measuring the displacement of the piston, based on the number of piston reciprocations and the amount of piston displacement.
  • the unit of measurement is the smallest resolution unit of the scale and the volume tube measurement.
  • the product of the volume cross-sectional area combines and expands the functions of traditional volume tube devices and media metering pumps.
  • the objective of the present invention can be achieved by taking the following technical measures:
  • volume tube continuous metering type conveying pump device which includes a volume pipe and a drag mechanism; the volume pipe is provided with a metering volume area, and a one-way liquid inlet valve and a one-way liquid outlet valve; especially the volume There are two unidirectional liquid inlet valves and unidirectional liquid outlet valves in the tube, which are respectively arranged at both ends of the inner wall of the volume tube; A piston is provided in the volume tube; the piston is connected to the drag mechanism.
  • FIG. 1 is a structural diagram of a continuous tube boiling metering pump device of the present invention
  • FIG. 2 is a structural diagram of the volume tube continuous metering type conveying pump device using a linear motor
  • FIG. 3 is a timing chart of the screw speed and valve lift of the volume tube continuous metering type conveying pump device. detailed description
  • a volume tube continuous metering type conveying pump device includes a volume tube 1 and a drag mechanism 2; the volume tube 1 is provided with a metering volume area 11, and a one-way liquid inlet valve 8 and a one-way liquid outlet valve 7; especially The one-way liquid inlet valve 8 and one-way liquid outlet valve ⁇ of the volume tube 1 are each provided at two ends of the inner wall of the volume tube 1; a piston 9 is also provided in the volume tube 1; the piston 9connects the drag mechanism 2.
  • the volume tube continuous metering type conveying pump device is further provided with a grating ruler 4 located on the moving path of the drag rod of the piston 9.
  • the drag mechanism 2 may be a servo motor device including a servo motor 22, a belt transmission mechanism 21, a lead screw 23, and a lead screw nut 25 connected in sequence, or a linear motor.
  • a screw sleeve 6 connected to the piston 9 is provided on the outside of the screw 23.
  • the lead screw rotates in a lead screw sleeve connected to the piston.
  • the main advantages of the present invention are: It can not only realize the quantitative transmission of all the media flowing through the volume tube metering pump device ii! , Metering, and can be controlled by the volume tube metering pump device
  • the system adaptively adjusts the medium flow rate of the user's pipeline system to make it match the medium flow rate of the user's pipeline system. It integrates the functions of the active and passive volumetric tube metering pump devices, and greatly expands the quantitative output and measurement of the medium flow rate.
  • the scope can be used to verify fluid medium flow measurement instruments and equipment on-line, and has the functions of traditional volumetric tube devices and media metering pumps. ⁇
  • the transmission mechanism is simple.
  • the medium flow rate is large.
  • the structure of the volume tube metering pump device is shown in FIG. 1.
  • the servo motor 22 drives the lead screw 23 through a belt transmission mechanism 21, and the lead screw 23 drags the piston through the lead screw nut 25 and the lead screw sleeve 6.
  • the reciprocating motion is performed in the volumetric tube measuring volume 11, the measured medium enters the volumetric tube measuring volume 11 through the liquid inlet check valve 8 through the liquid inlet check valve 8, and the measured medium flows out of the volumetric tube measuring volume through the liquid outlet check valve 7.
  • 11 enters the liquid outlet pipe 10, and after the piston position is accurately measured by the grating ruler 4, the output of the medium is calculated.
  • the device uses a ball screw driven by a motor to drive the piston in the volume tube. Through the ball screw, the rotary motion of the motor is converted into a reciprocating linear motion of the piston.
  • An in-position micro-switch can be set at the end to ensure accurate measurement of each reciprocation.
  • Each measurement result is input to the computer for accurate statistics and calculations, ensuring the measurement accuracy of flow and volume.
  • the structure of the volume tube metering pump device is shown in FIG. 2.
  • the linear motor 2 drives the piston 9 to make a reciprocating motion in the volume tube metering volume 11.
  • the measured medium passes from the liquid inlet tube 12 through the liquid inlet unidirectionally.
  • the valve 8 enters the volumetric tube measuring volume 11 and the measured medium flows out of the volumetric tube measuring volume 11 through the liquid discharge check valve 7 and enters the liquid outlet tube 10. After the piston position is accurately measured by the grating ruler 4, the output of the medium is calculated .
  • the working method of the volume tube metering and conveying pump device is to output liquid quantitatively in both directions, that is, when the piston moves in the direction of volume A, the liquid in volume A outputs liquid to the outside of the cylinder through the one-way outlet valve, while at the same time
  • the liquid inlet valve is filled with a certain amount of liquid from the outside of the cylinder.
  • the piston moves in the direction of volume B, the fluid in the volume B is output to the outside of the cylinder through the one-way liquid outlet.
  • the fluid is quantitatively filled from the outside of the cylinder, and the piston reciprocates to achieve a bidirectional quantitative output flow. Body function.
  • the switching sequence of the liquid inlet and outlet check valve of the volume tube metering pump device is: when the piston moves to the dead point in the direction of volume B, the B side check valve is closed after t x seconds and the A side check valve is closed at the same time Liquid valve; after another interval of t y , the one-way liquid inlet valve on the B side is opened, and the one-way liquid output valve on the A side is opened at the same time; after another t z seconds, the lead screw is reversed and the piston moves in the direction of the A volume.
  • the one-way liquid inlet valve on the B side is closed, and the one-way liquid outlet valve on the A side is closed at the same time.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Measuring Volume Flow (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

A feeding pump device of bulk tube continually metering type comprises: a bulk tube (1) provided with metering volume section (11), a drive mechanism (2), and an unilateral inlet valve (8) and an unilateral outlet valve (7). Said bulk tube (1) particularly have two unilateral inlet valves (8) and two unilateral outlet valves (7) provided in two ends of inner wall thereof respectively. A piston (9) connected to the said drive mechanism (2) is provided in said bulk tube (1). The present invention provides a design scheme of feeding pump, of which metering mode is based on measuring displacement of the piston, and takes reciprocation times of the piston as computation base. The unit of metering is the product of minimal distinguish unit of grating ruler and cross section area of metering volume section of the bulk tube, and the pump has both the function of the conventional bulk tube device and medium metering type feeding pump and develops it.

Description

体积管连续计量式输送泵装置 技术领域  TECHNICAL FIELD
本发明涉及一种计量式输送泵装置，特别是可同时用于液体介质定量输 出、液体介质流量的计量、容器容积的标定和对液体介质流量测量仪器设备 进行检定的计量式输送泵装置。 背景技术  The invention relates to a metering type conveying pump device, in particular to a metering type conveying pump device which can be used at the same time for quantitative output of liquid medium, measurement of liquid medium flow rate, calibration of container volume, and verification of liquid medium flow measuring instruments. Background technique
已有的体积管装置只能对流经体积管装置的部分介质进行计量、而不能 对流经体积管装置的所有介质进行定量输出、 计量。  The existing volume tube device can only measure part of the medium flowing through the volume tube device, but cannot quantitatively output and measure all the medium flowing through the volume tube device.
已有的计量输送泵装置如中国专利 90200439. 5公开的一种体积管流量 计， 只能对较小流量的介质进行定量输出， 且最小计量单位一般为^"个固定 的容积， 其大小决定了计量误差； 这种以计量容积输送次数的方式进行的计 量， 不能对较大流量的介质进行定量输出和计量。 发明内容  Existing metering pump devices, such as a volume tube flow meter disclosed in Chinese patent 90200439.5, can only output quantitatively for a medium with a small flow rate, and the minimum unit of measurement is generally ^ "fixed volume, whose size determines Metering error; this kind of metering in the way of measuring the volume of delivery times, can not quantitatively output and meter the medium with a large flow.
本发明的目的是：克服已有的体积管装置不能对流经体积管装置的所有 介质进行定量输出、计量和已有的计量输送泵装置对较大流量的"介质进行定 量输出、 计量的不足， 提供一种体积管计量输送泵装置的设计方案， 其计量 方式是以测量活塞位移为基础， 以活塞往复次数及活塞位移量为计算依据， 其计量单位是光栅尺的最小分辨单位与体积管计量容积横截面积的乘积，其 兼备和扩展了传统体积管装置和介质计量输送泵的功能。  The purpose of the present invention is to overcome the shortcomings of the existing volume tube device that cannot quantitatively output and measure all the medium flowing through the volume tube device and the existing metering and conveying pump device to quantitatively output and measure "medium" with a large flow rate. Provide a design scheme of a volume tube metering and conveying pump device. The measurement method is based on measuring the displacement of the piston, based on the number of piston reciprocations and the amount of piston displacement. The unit of measurement is the smallest resolution unit of the scale and the volume tube measurement. The product of the volume cross-sectional area combines and expands the functions of traditional volume tube devices and media metering pumps.
本发明的目的可以通过釆取以下技术措施来达到：  The objective of the present invention can be achieved by taking the following technical measures:
设计、制造一种体积管连续计量式输送泵装置，包括体积管和拖动机构； 所述体积管设有计量容积区， 以及单向进液阀和单向出液阀； 尤其是所述体 积管的单向进液阀和单向出液阀各有二个， 分设在所述体积管内壁的两端； 所述体积管内又设有活塞； 该活塞连接所述拖动机构。 附图说明 Designing and manufacturing a volume tube continuous metering type conveying pump device, which includes a volume pipe and a drag mechanism; the volume pipe is provided with a metering volume area, and a one-way liquid inlet valve and a one-way liquid outlet valve; especially the volume There are two unidirectional liquid inlet valves and unidirectional liquid outlet valves in the tube, which are respectively arranged at both ends of the inner wall of the volume tube; A piston is provided in the volume tube; the piston is connected to the drag mechanism. BRIEF DESCRIPTION OF THE DRAWINGS
图 1是本发明体积管连续计煮式输送泵装置一种结构图；  FIG. 1 is a structural diagram of a continuous tube boiling metering pump device of the present invention;
图 2是所述体积管连续计量式输送泵装置采用直线电机的结构图； 图 3是所述体积管连续计量式输送泵装置的丝杠转速和阀门升程的时序 图。 具体实施方式  FIG. 2 is a structural diagram of the volume tube continuous metering type conveying pump device using a linear motor; FIG. 3 is a timing chart of the screw speed and valve lift of the volume tube continuous metering type conveying pump device. detailed description
以下结合附图详述本发明的实施例。  The embodiments of the present invention are described in detail below with reference to the drawings.
一种体积管连续计量式输送泵装置， 包括体积管 1和拖动机构 2; 所述 体积管 1设有计量容积区 11， 以及单向进液阀 8和单向出液阀 7; 尤其是所 述体积管 1的单向进液阀 8和单向出液阀 Ί各有二个， 分设在所述体积管 1 内壁的两端；所述体积管 1内又设有活塞 9; 该活塞 9连接所述拖动机构 2。  A volume tube continuous metering type conveying pump device includes a volume tube 1 and a drag mechanism 2; the volume tube 1 is provided with a metering volume area 11, and a one-way liquid inlet valve 8 and a one-way liquid outlet valve 7; especially The one-way liquid inlet valve 8 and one-way liquid outlet valve Ί of the volume tube 1 are each provided at two ends of the inner wall of the volume tube 1; a piston 9 is also provided in the volume tube 1; the piston 9connects the drag mechanism 2.
所述体积管连续计量式输送泵装置还设有位于所述活塞 9拖动杆件运动 路径上的光栅尺 4。  The volume tube continuous metering type conveying pump device is further provided with a grating ruler 4 located on the moving path of the drag rod of the piston 9.
所述拖动机构 2可以是包括依次相连的伺服电机 22、 皮带传动机构 21 丝杠 23和丝杠螺母 25的伺服电机装置， 也可以是直线电机。  The drag mechanism 2 may be a servo motor device including a servo motor 22, a belt transmission mechanism 21, a lead screw 23, and a lead screw nut 25 connected in sequence, or a linear motor.
采用伺服电机装置的， 所述丝杠 23外面设有与所述活塞 9相连的丝杠 套管 6。 丝杠在与活塞连接的丝杠护套管内转动。  With a servo motor device, a screw sleeve 6 connected to the piston 9 is provided on the outside of the screw 23. The lead screw rotates in a lead screw sleeve connected to the piston.
具体方案有两种， 一是通过滚珠丝杠， 将电机的旋转运动转化为活塞的 直线运动， 活塞两侧的计量容积， 通过各自的进出单向阀， 在活塞一个运动 周期内各定量输出、 计量一次。 二是用直线电机驱动活塞做直线运动， 活塞 两侧的计量容积， 通过各自的进出单向阀，在活塞一个运动周期内各定量输 出、 计量一次。  There are two specific schemes. One is to convert the rotary motion of the motor into the linear motion of the piston through a ball screw. The metering volumes on both sides of the piston are respectively output through the check valve in and out. Measure once. The second is to use a linear motor to drive the piston to perform linear motion. The measuring volumes on both sides of the piston are respectively output and measured once in a single cycle of the piston through their respective check valves.
本发明的主要优点是： 不但能实现对流经体积管计量输送泵装置的所有 介质进行定量输 ii！、计量， 而且可通过体积管计量输送泵装置的控制计量系 统对用户管道系统介质流量进行自适应调节，使之与用户管道系统介质流量 良好匹配， 综合了主动式与被动式体积管计量输送泵装置的功能 ,·极大地拓 宽了介质流量的定量输出和计量的范围，可在线对流体介质流量测量仪器设 备进行检定， 兼备和扩展了传统体积管装置和介质计量输送泵的功能。 釆用 与活塞连接的丝杠护套管将丝杠保护起来的结构，避免了丝杠与被测介质接 触而受腐蚀， 便于丝杠的润滑和冷却。 与传统的体积管装置相比， 其传动机 构简单。 与传统的计量输送泵装置相比， 其介质流量大。 The main advantages of the present invention are: It can not only realize the quantitative transmission of all the media flowing through the volume tube metering pump device ii! , Metering, and can be controlled by the volume tube metering pump device The system adaptively adjusts the medium flow rate of the user's pipeline system to make it match the medium flow rate of the user's pipeline system. It integrates the functions of the active and passive volumetric tube metering pump devices, and greatly expands the quantitative output and measurement of the medium flow rate. The scope can be used to verify fluid medium flow measurement instruments and equipment on-line, and has the functions of traditional volumetric tube devices and media metering pumps.釆 The structure that protects the lead screw with a lead screw sleeve connected to the piston, avoids the lead screw contacting with the measured medium and being corroded, which facilitates the lubrication and cooling of the lead screw. Compared with the traditional volume tube device, the transmission mechanism is simple. Compared with the traditional metering pump device, its medium flow rate is large.
一些实施例中， 体积管计量输送泵装置结构如图 1所示， 伺服电机 22 通过皮带传动机构 21驱动丝杠 23转动，丝杠 23通过丝杠螺母 25及丝杠护 套管 6拖动活塞 9在体积管计量容积 11内做往复运动， 被测介质由进液管 12通过进液单向阀 8进入体积管计量容积 11内， 被测介质通过出液单向阀 7流出体积管计量容积 11进入出液管 10， 通过光栅尺 4对活塞位置进行精 确测量后， 计算出介质的输出量。装置采用了体积管内的活塞由电机拖动的 滚珠丝杠驱动， 通过滚珠丝杠， 将电机的旋转运动转化为活塞的往复直线运 动的结构方案。  In some embodiments, the structure of the volume tube metering pump device is shown in FIG. 1. The servo motor 22 drives the lead screw 23 through a belt transmission mechanism 21, and the lead screw 23 drags the piston through the lead screw nut 25 and the lead screw sleeve 6. 9 The reciprocating motion is performed in the volumetric tube measuring volume 11, the measured medium enters the volumetric tube measuring volume 11 through the liquid inlet check valve 8 through the liquid inlet check valve 8, and the measured medium flows out of the volumetric tube measuring volume through the liquid outlet check valve 7. 11 enters the liquid outlet pipe 10, and after the piston position is accurately measured by the grating ruler 4, the output of the medium is calculated. The device uses a ball screw driven by a motor to drive the piston in the volume tube. Through the ball screw, the rotary motion of the motor is converted into a reciprocating linear motion of the piston.
可于端头设置到位微动开关，保证每次往复的准确计量。各测量结果输 入计算机进行精确统计和计算， 保证流量和容积的计量精度。 '  An in-position micro-switch can be set at the end to ensure accurate measurement of each reciprocation. Each measurement result is input to the computer for accurate statistics and calculations, ensuring the measurement accuracy of flow and volume. '
另一些实施例中， 体积管计量输送泵装置结构如图 2所示， 由直线电机 2驱动活塞 9在体积管计量容积 11内做往复运动， 被测介质由进液管 12通 过进液单向阀 8进入体积管计量容积 11内， 被测介质通过出液单向阀 7流 出体积管计量容积 11进入出液管 10 , 通过光栅尺 4对活塞位置进行精确测 量后， 计算出介质的输出量。  In other embodiments, the structure of the volume tube metering pump device is shown in FIG. 2. The linear motor 2 drives the piston 9 to make a reciprocating motion in the volume tube metering volume 11. The measured medium passes from the liquid inlet tube 12 through the liquid inlet unidirectionally. The valve 8 enters the volumetric tube measuring volume 11 and the measured medium flows out of the volumetric tube measuring volume 11 through the liquid discharge check valve 7 and enters the liquid outlet tube 10. After the piston position is accurately measured by the grating ruler 4, the output of the medium is calculated .
体积管计量输送泵装置的工作方式为双向定量输出液体， 即当活塞向 A 容积方向运动时， A容积内液体经过单向出液阀定量向缸外输出液体， 而与 此同时 B容积经过单向进液阀由缸外定量充入液体，当活塞向 B容积方向运 动时， B容积内流体经过单向出液岡定量向缸外输出流体， 而与此同时 A容 积经过单向进液阀由缸外定量充入流体，活塞往复运动实现双向定量输出流 体的功能。 The working method of the volume tube metering and conveying pump device is to output liquid quantitatively in both directions, that is, when the piston moves in the direction of volume A, the liquid in volume A outputs liquid to the outside of the cylinder through the one-way outlet valve, while at the same time The liquid inlet valve is filled with a certain amount of liquid from the outside of the cylinder. When the piston moves in the direction of volume B, the fluid in the volume B is output to the outside of the cylinder through the one-way liquid outlet. The fluid is quantitatively filled from the outside of the cylinder, and the piston reciprocates to achieve a bidirectional quantitative output flow. Body function.
体积管计量输送泵装置的进出液单向阀的开关时序为：当活塞向 B容积 方向运动到止点时， 间隔 tx秒后关闭 B侧单向出液阀， 同时关闭 A侧单向进 液阀； 再间隔 ty秒后， 开启 B侧单向进液阀， 同时开启 A侧单向出液阀； 再 间隔 tz秒后， 丝杠反转, 活塞向 A容积方向运动， 当活塞运动到止点时， 间 隔 tz秒后， 关闭 B侧单向进液阀， 同时关闭 A侧单向出液阀； 再间隔 ty秒 后， 开启 B侧单向出液阀， 同时开启 A侧单向进液阀； 活塞及进出液单向阀 如此往复循环运动。 活塞由停止到再运动的间隔时间为 t秒， t-tx+ty+tz 。 丝杠、 活塞及单向进出液阀的时序关系见附图 3。 The switching sequence of the liquid inlet and outlet check valve of the volume tube metering pump device is: when the piston moves to the dead point in the direction of volume B, the B side check valve is closed after t x seconds and the A side check valve is closed at the same time Liquid valve; after another interval of t y , the one-way liquid inlet valve on the B side is opened, and the one-way liquid output valve on the A side is opened at the same time; after another t z seconds, the lead screw is reversed and the piston moves in the direction of the A volume. When the movement reaches the dead point, after the interval of t z seconds, the one-way liquid inlet valve on the B side is closed, and the one-way liquid outlet valve on the A side is closed at the same time. After the interval of t y , the one-way liquid outlet valve on the B side is opened, and the A Side one-way liquid inlet valve; The piston and the liquid inlet and outlet one-way valve move in this way. The interval from the stop of the piston to its re-movement is t seconds, tt x + t y + t z . See Figure 3 for the timing relationship between the screw, the piston and the one-way inlet and outlet valve.

Claims

权 利 要 求 、 一种体积管连续计量式输送泵装置， 包括体积管（ 1 )和拖动机构 ( 2 ); 所述体积管（ 1 )设有计量容积区（ 11 ), 以及单向进液阀 （ 8 )和单向 出液阀 （7 ); 其特征在于： A continuous tube metering pump device for volume tubes, comprising a volume tube (1) and a drag mechanism (2); the volume tube (1) is provided with a metering volume area (11), and a one-way liquid inlet valve (8) and one-way outlet valve (7); characterized in that:
所述体积管 （ 1 ) 的单向进液岡 ( 8 )和单向出液阀 （ 7 )各有二个， 分设在所述体积管 （1 ) 内壁的两端；  There are two one-way liquid inlets (8) and one-way liquid discharge valves (7) for the volume tube (1), which are respectively arranged at both ends of the inner wall of the volume tube (1);
所述体积管（ 1 ) 内又设有活塞（ 9 ); 该活塞（ 9 )连接所述拖动机 构 （ 2 )。 ■ 、 根据权利要求 1所述的体积.管连续计量式输送泵装置， 其特征在于： 还设有位于所述活塞（ 9 )拖动杆件运动路径上的光栅 R ( 4 )。 、 根据权利要求 2所^的体积管连续计量式输送泵装置， 其特征在于： 所述拖动机构 ( 2 )又包括依次相连的伺服电机（22 )、 皮带传动机 构 （ 21 )丝杠（ 23 )和丝杠螺母（ 25 I 、 根据权利要求 3所述的体积管连续计量式输送泵装置， 其特征在于： 所述丝杠（ 23 )外面设有与所述活塞（ 9 )相连的丝杠套管 （ 6 )。 、 根据权利要求 2所述的体积管连续计量式输送泵装置， 其特征在于:  A piston (9) is provided in the volume tube (1), and the piston (9) is connected to the drag mechanism (2). ■ The volume and tube continuous metering type conveying pump device according to claim 1, further comprising: a grating R (4) located on a moving path of the drag rod of the piston (9). 7. The continuous measuring pump device for volume tube according to claim 2, characterized in that: said drag mechanism (2) further comprises a servo motor (22), a belt transmission mechanism (21) and a screw (23) connected in order. ) And a screw nut (25 I) The volumetric tube continuous metering type conveying pump device according to claim 3, characterized in that: the screw (23) is provided with a screw connected to the piston (9) outside. Casing (6). The volumetric tube continuous metering type conveying pump device according to claim 2, characterized in that:
所述拖动机构（2 )是直线电机。  The drag mechanism (2) is a linear motor.
PCT/CN2005/000039 2004-02-06 2005-01-12 A feeding pump device of bulk tube continually metering type WO2005078280A1 (en)

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US10/588,271 US20070134107A1 (en) 2004-02-06 2005-01-12 Feeding pump device of volume tube continually metering type

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CN200410015301.8 2004-02-06
CN200410015301.8A CN1651762A (en) 2004-02-06 2004-02-06 Valume tube continuous metering type delivering pump device

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