WO2022227829A1 - 一种智能数字化调节流量的计量泵及其应用 - Google Patents

一种智能数字化调节流量的计量泵及其应用 Download PDF

Info

Publication number
WO2022227829A1
WO2022227829A1 PCT/CN2022/077790 CN2022077790W WO2022227829A1 WO 2022227829 A1 WO2022227829 A1 WO 2022227829A1 CN 2022077790 W CN2022077790 W CN 2022077790W WO 2022227829 A1 WO2022227829 A1 WO 2022227829A1
Authority
WO
WIPO (PCT)
Prior art keywords
servo motor
pump
metering pump
intelligently
worm
Prior art date
Application number
PCT/CN2022/077790
Other languages
English (en)
French (fr)
Inventor
蔡峰
Original Assignee
蔡峰
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 蔡峰 filed Critical 蔡峰
Publication of WO2022227829A1 publication Critical patent/WO2022227829A1/zh

Links

Images

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
    • 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
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • 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
    • F04B49/06—Control using electricity
    • 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
    • F04B49/20—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 changing the driving speed

Definitions

  • the invention relates to a metering pump for intelligently digitally regulating flow and its application, and belongs to the technical field of metering pumps.
  • the metering pump is a positive displacement pump that measures liquid media. It is a type of positive displacement pump equipment that provides high-precision quantitative dosing of chemical fluids and pressure sources for quantitative dosing devices in the process of quantitative dosing of chemicals in scientific research and production enterprises.
  • Chinese patent document CN106762510B discloses a fast and precise manual adjustment type constant speed and constant pressure metering pump, which includes a turbine, a worm, a servo motor, a reducer, and a motor bracket. The input end of the reducer is connected to the motor shaft of the servo motor.
  • the constant speed and constant pressure metering pump also includes a manual adjustment mechanism.
  • the manual adjustment mechanism includes a first rotating shaft, a second rotating shaft, a box body, a first gear, a second gear, a quick adjustment handle, and a fine adjustment handle. Actively connected to the box.
  • the advantage is that it overcomes the influence on the accuracy of the metering pump caused by local loosening, further simplifies the structure of the transmission device, makes handling easier, and is more convenient to disassemble.
  • Chinese patent document CN209925159U discloses a liquid servo metering pump, comprising a pump casing and a servo motor, a push rod and a lead screw installed in the pump casing, the pump casing is connected with a metering cylinder, and the push rod can move left and right.
  • a piston and a piston sleeve are fixedly arranged on the right side of the push rod, and a pump head and a pump head are fixedly arranged on the right side of the metering cylinder.
  • a one-way valve and a second one-way valve the lead screw is rotated and arranged in the pump casing, the left end of the lead screw is provided with a driven pulley, the right end of the lead screw is screwed with the left side of the push rod, and the output shaft of the servo motor is on the
  • a driving pulley is fixedly arranged, and the driving pulley and the driven pulley are connected by a synchronous belt.
  • the utility model can realize the adjustment of the limit position of the piston by controlling the parameters of the servo motor, thereby realizing the adjustment of the volume of the filling liquid, which is very convenient, and can accurately control the stroke of the piston, and can effectively improve the metering of the filling liquid. precision.
  • variable frequency regulation the variable frequency motor is driven by the metering pump, and the frequency of the drive motor is adjusted online by the frequency converter to change the motor speed, so as to achieve the purpose of automatically adjusting the flow rate of the metering pump.
  • the disadvantage is that the flow rate of the metering pump cannot be simulated.
  • the stepper motor is built into the pump body of the metering pump to drive the built-in stroke connecting rod of the metering pump, and the flow rate of the metering pump is adjusted by adjusting the stroke frequency value of the connecting rod.
  • the disadvantage is that the volume of the metering pump becomes larger, it cannot be used as a large flow metering pump, and it is difficult to disassemble and maintain.
  • the present invention provides a metering pump capable of intelligently digitally adjusting the flow rate.
  • a servo motor is used to replace a common motor.
  • a servo motor controller is used to automatically adjust the flow rate of the metering pump.
  • the speed pulse frequency sent by the controller to the servo motor is programmed and controlled, and the feedback signal of the servo motor controller, such as the speed model, is fed back to the display screen and the flow value of the metering pump is simulated.
  • the present invention also provides a working method of the above-mentioned metering pump for intelligently digitally regulating flow.
  • a metering pump for intelligently digitally regulating flow comprising a metering pump body, a servo motor and a servo motor controller;
  • the pump body of the metering pump includes a pump box and a pump head.
  • the pump box is provided with a connecting rod, an eccentric mechanism, a worm gear and a worm.
  • the worm is meshed with the worm gear.
  • the worm gear is installed on the eccentric mechanism.
  • the other end of the pump is connected to the pump head through the plunger;
  • the top of the worm sticks out of the pump box and is connected with the output shaft of the servo motor, and the servo motor is connected with the servo motor controller.
  • the servo motor controller is connected to a liquid crystal display.
  • the servo motor controller is first connected to the PLC controller, and then the PLC controller is connected to the liquid crystal display screen.
  • the center of the eccentric mechanism is connected to the manual flow adjustment mechanism.
  • the bottom end of the worm is fixed in the pump casing through a bearing.
  • the servo motor is mounted on the outside of the pump casing through a flange.
  • the output shaft of the servo motor is connected to the top end of the worm through a coupling.
  • the upper and lower sides of the pump head are respectively connected with an inlet check valve and an outlet check valve.
  • the servo motor is a Panasonic MHMF series motor.
  • the servo motor controller is a Panasonic MBDLN or Yaskawa controller.
  • the PLC controller selects Siemens PLCS7-200 or Mitsubishi PLC controller.
  • the display screen is a Siemens 6AV6641 LCD screen.
  • a working method of a metering pump for intelligently digitally regulating flow comprising the following steps:
  • the servo motor controller inputs the pulse signal to control the speed of the servo motor according to the program instructions of the PLC controller; the servo motor works according to the frequency of the received pulse signal;
  • the output pulse signal is programmed by the PLC controller to realize the automatic adjustment of the flow rate of the metering pump.
  • the number of strokes per unit time of the metering pump can be converted into the flow value and displayed on the display screen in real time.
  • the metering pump for intelligent digital flow regulation of the present invention adopts PLC controller for programming, and the servo motor controller runs according to the internal program of the PLC controller.
  • the servo motor controller can receive external control signals through external wiring ports such as RS232 and RS485 and pass through the servo motor.
  • the internal circuit of the controller processes the corresponding servo motor pulse control signals.
  • the servo motor controls the speed of the servo motor according to the input pulse signal.
  • the servo motor works according to the frequency of the received pulse signal. It can truly realize the intelligent control and adjustment of the flow rate of the metering pump, which can completely replace the manual adjustment.
  • Fig. 1 is the structural representation of the metering pump of the present invention
  • Fig. 2 is a structural schematic diagram of a single pump head
  • Figure 3 is a flow diagram before speed regulation and rectification
  • Figure 4 is a flow diagram after speed regulation
  • Figure 5 is a flow diagram after rectification
  • Figure 6 is a schematic diagram of the structure of the double pump head
  • Figure 7 is a flow diagram before speed regulation and rectification
  • Figure 8 is a flow diagram after speed regulation
  • Figure 9 is a flow diagram after rectification
  • Figure 10 is the flow curve diagram after the pipeline is rectified with a pulsation damper
  • 1- outlet check valve 2- pump head, 3- inlet check valve, 4- pump casing, 5- eccentric mechanism, 6- worm gear, 7- bearing, 8- worm, 9- connecting rod, 10 -Plunger, 11-Servo motor controller, 12-PLC controller, 13-Display screen, 14-Flange, 15-Servo motor, 16-Eccentric connection hinge shaft.
  • this embodiment provides a metering pump for intelligently digitally regulating flow, including a metering pump body, a servo motor 15 and a servo motor controller 11 ;
  • the pump body of the metering pump includes a pump casing 4 and a pump head 2.
  • the pump casing 4 is provided with a connecting rod 9, an eccentric mechanism 5, a worm gear 6 and a worm 8.
  • the worm 8 is engaged with the worm gear 6, and the worm gear 6 is installed on the eccentric mechanism 5.
  • the eccentric mechanism 5 is hinged with one end of the connecting rod 9 through the eccentric connecting hinge shaft 16, and the other end of the connecting rod 9 is connected with the pump head 2 through the plunger 10;
  • the top end of the worm 8 protrudes out of the pump casing 4 and is connected to the output shaft of the servo motor 15 , and the servo motor 15 is connected to the servo motor controller 11 .
  • the bottom end of the worm 8 is fixed in the pump casing 4 through the bearing 7 .
  • the servo motor 15 is mounted on the outside of the pump casing 4 through the flange 14 .
  • the output shaft of the servo motor 15 is connected with the top end of the worm 8 through a coupling.
  • the source power of the servo motor 15 is transmitted to the worm 8, the worm 8 drives the worm wheel 6 to rotate, and the worm wheel 6 rotates while driving the eccentric mechanism 5 to rotate, so that the connecting rod 9 on the eccentric mechanism 5 drives the plunger 10 to reciprocate in the pump head 2 , Negative pressure and positive pressure are generated by the reciprocating motion of the plunger.
  • the negative pressure is generated, so that the chemical fluid enters the pump head through the check valve at the inlet of the metering pump, so as to realize the one-way flow to the inlet.
  • the valve port is opened and the outlet valve is closed
  • the inlet check valve is closed when the plunger moves to the direction of the pump head, the outlet check valve is opened, and the chemical fluid flows out from the outlet check valve.
  • the metering pump can repeat the above operations repeatedly to realize the metering pump. Chemical dosing.
  • the upper and lower sides of the pump head 2 are respectively connected to the inlet check valve 3 and the outlet check valve 1 .
  • Servo motor 15 uses Panasonic MHMF series motor.
  • the servo motor controller 11 selects Panasonic MBDLN or Yaskawa controller.
  • the servo motor in this embodiment can also be replaced by a stepping motor, and the servo motor controller can also be replaced by a stepping motor controller.
  • the front end of the metering pump plunger that is in contact with chemicals can be replaced with chemical-resistant materials such as PTFE or stainless steel diaphragms, and mechanical diaphragm metering pumps such as the existing Milton Roy G series, Shengruilan MB, MC single head double Head series; or the front end of the metering pump plunger that is in contact with chemicals can be replaced with hydraulic oil, the hydraulic oil is pushed by the plunger, and the other end of the hydraulic oil is set to a chemical-resistant diaphragm such as: PTFE or stainless steel, and the hydraulic diaphragm is metered.
  • Pumps such as the existing Milton Roy MROY series single-head double-head metering pump, Shengruilan HE, HG, HK series single-head double-head metering pump.
  • a metering pump for intelligently digitally regulating flow the structure is as described in Embodiment 1, and the difference is that: the servo motor controller 11 is connected to a liquid crystal display screen 13, and the liquid crystal display screen 13 is a Siemens 6AV6641 liquid crystal screen. It can be used by field staff to view the operating parameters of the servo motor in real time, and can convert the operating parameters into flow parameters and pulse frequency parameters.
  • a metering pump for intelligently digitally regulating flow the structure is as described in Embodiment 2, the difference is that: the servo motor controller 11 is connected to the PLC controller 12 first, and the PLC controller 12 is then connected to the liquid crystal display screen 13 .
  • PLC controller 12 selects Siemens PLCS7-200 or Mitsubishi PLC controller.
  • the technical solution of this embodiment adopts a PLC controller.
  • a pulse signal is input to the servo motor controller, so that the servo motor controller controls the entire operation process of the servo motor, thereby realizing the control of the flow rate of the metering pump.
  • Speed regulation and rectification By writing a program into the PLC controller, a pulse signal is input to the servo motor controller, so that the servo motor controller controls the entire operation process of the servo motor, thereby realizing the control of the flow rate of the metering pump. Speed regulation and rectification.
  • a metering pump for intelligently digitally regulating flow the structure is as described in Embodiment 1, the difference is that the center of the eccentric mechanism is connected to the manual flow regulating mechanism (not shown in the figure).
  • the flow rate of the metering pump can be adjusted by manually controlling the rotational stroke displacement of the eccentric mechanism through the manual flow adjustment mechanism outside the pump box.
  • the output pulse signal is programmed by the PLC controller to realize the automatic adjustment of the flow rate of the metering pump.
  • the number of strokes of the metering pump can be converted into the flow value and displayed on the display screen in real time.
  • Fig. 2 is a schematic diagram of the structure of a single pump head
  • Fig. 3 is a flow diagram of the metering pump without the action of the PLC controller
  • Fig. 4 is a flow diagram of the flow rate after the PLC controller is used for speed regulation.
  • Figure 5 shows the sine wave for the flow curve of the metering pump.
  • the flow value is increased.
  • the initial section of the sine curve is accelerated to make the flow reach the average value of the horizontal line.
  • the speed of the servo motor is decelerated (decelerated) so that the flow curve is close to the average value of the horizontal line, and the flow curve can be presented as a horizontal straight line, which is a stable fluid.
  • the output pulse signal is programmed by the PLC controller to realize the automatic adjustment of the flow rate of the metering pump.
  • the number of strokes of the metering pump can be converted into the flow value and displayed on the display screen in real time.
  • Figure 6 is a schematic diagram of the structure of the double pump head
  • Figure 7 is a sine wave flow graph of the metering pump without the action of the PLC controller
  • Figure 8 is a graph of the servo motor after speed regulation (deceleration), showing that the flow rate decreases .
  • Figure 9 is a sine wave for the flow curve of the metering pump.
  • the flow value is increased.
  • the initial section of the sine curve is accelerated to make the flow reach the average value of the horizontal line, and the peak flow of the sine curve is used.
  • the speed of the servo motor is decelerated (decelerated) so that the flow curve is close to the average value of the horizontal line, and the flow curve can be presented as a horizontal straight line, which is a stable fluid.
  • Figure 10 shows that after the pulsation damper is added to the dosing pipeline, the output flow curve of the double-head pump tends to a horizontal straight line after the pulsation damper is rectified again.
  • the advantage of this is that for chemical, daily chemical, foundry, papermaking, tobacco, water treatment, laboratory and other processes that require stable and precise dosing of chemicals, there is a more reliable dosing equipment, which can significantly improve the quality of later products. rate, save the amount of chemicals, and open up a wider field for the precise dosing of metering pumps.

Landscapes

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

Abstract

一种智能数字化调节流量的计量泵及其工作方法，计量泵包括计量泵泵体、伺服电机(15)、伺服电机控制器(11)、PLC控制器(12)和显示屏(13)；计量泵泵体包括泵箱体(4)和泵头(2)，泵箱体(4)内设置有连杆(9)、偏心机构(5)、蜗轮(6)和蜗杆(8)，蜗杆(8)与蜗轮(6)相啮合，蜗轮(6)安装在偏心机构(5)上，偏心机构(5)与连杆(9)一端铰接，连杆(9)的另一端通过柱塞(10)与泵头(2)连接；蜗杆(8)的顶端伸出泵箱体(4)与伺服电机(15)的输出轴传动连接，伺服电机(15)依次与伺服电机控制器(11)、PLC控制器(12)、显示屏(13)连接。计量泵工作方法为：由伺服电机控制器(11)根据PLC控制器(12)内部程序运行，伺服电机控制器(11)对伺服电机(15)输入控制转速的脉冲信号，伺服电机(15)依照收到的脉冲信号频率工作，频率高则转速高，频率低则转速低，真正实现计量泵流量的智能控制和调节。

Description

一种智能数字化调节流量的计量泵及其应用 技术领域
本发明涉及一种智能数字化调节流量的计量泵及其应用，属于计量泵技术领域。
背景技术
计量泵是一种对液体介质进行计量的容积泵类产品。是一种为科研以及生产企业化学品定量投加过程中定量投加装置提供高精度定量投加化学品流体和压力源的容积泵类设备。例如，中国专利文献CN106762510B公告了一种快速精确手动调节型恒速恒压计量泵，包括涡轮、蜗杆、伺服电机、减速机、电机支架，减速机的输入端与伺服电机的电机轴连接。恒速恒压计量泵还包括手动调节机构，手动调节机构含有第一转轴、第二转轴、箱体、第一齿轮、第二齿轮、快调手柄、微调手柄，第一转轴、第二转轴均与箱体活动连接。其优势在于，克服因局部松动会对计量泵的精度造成的影响，进一步简洁传动装置的结构，搬运更加轻便，拆卸更方便。又如，中国专利文献CN209925159U公开了一种液体伺服计量泵，包括泵壳以及安装在泵壳内的伺服电机、推杆与丝杠，泵壳上连接有计量筒，推杆可左右移动的设置在泵壳内，推杆的右侧固定设置有活塞和活塞套，计量筒的右侧固定设置有泵头泵头，泵头与计量筒以及活塞围合成液体容纳腔，泵头上设置有第一单向阀与第二单向阀，丝杠转动设置在泵壳内，丝杠的左端设置有从动带轮，丝杠的右端与推杆的左侧螺接，伺服电机的输出轴上固定设置有主动带轮，主动带轮与从动带轮通过同步带连接。本实用新型通过控制伺服电机的参数，可以实现活塞极限位置的调整，进而实现灌装液体体积的调整，非常方便，并且能够精确的对活塞的行程进行控制，可有效的提升灌装液体的计量精度。
目前，现有市面上的计量泵存在以下不足之处：
1)采用手动流量调节，一般通过手柄进行调节，缺点是流量不能实现自动调节，精准度较差。
2)采用变频调节，通过计量泵上驱动变频电机，利用变频器对驱动电机频率在线调整改变电机转速，达到对计量泵流量自动调整的目的，缺点是不能模拟计量泵流量。
3)利用步进电机内置于计量泵泵体内，驱动计量泵内置冲程连杆，通过调节连杆冲程频率值，调节计量泵流量。缺点是计量泵体积变大，不能做大流量计量泵，拆装维修 困难。
发明内容
针对现有技术的不足，本发明提供一种智能数字化调节流量的计量泵，利用伺服电机取代普通电机，利用伺服电机控制器对计量泵流量进行自动调节，借助PLC控制器进行编程，对伺服电机控制器发送给伺服电机的转速脉冲频率进行编程控制，并通过伺服电机控制器反馈信号如转速型号反馈至显示屏上并模拟计量泵流量值。
本发明还提供上述一种智能数字化调节流量的计量泵的工作方法。
本发明的技术方案如下：
一种智能数字化调节流量的计量泵，包括计量泵泵体、伺服电机和伺服电机控制器；
计量泵泵体包括泵箱体和泵头，泵箱体内设置有连杆、偏心机构、蜗轮和蜗杆，蜗杆与蜗轮相啮合，蜗轮安装在偏心机构上，偏心机构与连杆一端铰接，连杆的另一端通过柱塞与泵头连接；
蜗杆的顶端伸出泵箱体与伺服电机的输出轴传动连接，伺服电机与伺服电机控制器连接。
优选的，所述伺服电机控制器连接液晶显示屏。
优选的，所述伺服电机控制器先连接PLC控制器，PLC控制器再连接液晶显示屏。
优选的，所述偏心机构中心与手动流量调节机构相连。
优选的，所述蜗杆的底端通过轴承固定在泵箱体内。
优选的，所述伺服电机通过法兰安装在泵箱体外侧。
优选的，所述伺服电机的输出轴通过联轴器与蜗杆顶端连接。
优选的，所述泵头的上下两侧分别连接入口单向阀和出口单向阀。
优选的，所述伺服电机选用松下MHMF系列电机。
优选的，所述伺服电机控制器选用松下MBDLN或安川控制器。
优选的，所述PLC控制器选用西门子PLCS7-200或三菱PLC控制器。
优选的，所述显示屏选用西门子6AV6641液晶屏。
一种智能数字化调节流量的计量泵的工作方法，包括以下步骤：
伺服电机控制器根据PLC控制器的程序指令，对伺服电机输入控制转速的脉冲信号；伺服电机依照收到的脉冲信号频率工作；
通过PLC控制器对输出脉冲信号编程，实现对计量泵流量的自动调节，通过显示屏 可将计量泵单位时间的冲程次数换算成流量值实时在显示屏上显示。
本发明的技术特点和有益效果：
本发明智能数字化调节流量的计量泵采用PLC控制器进行程序编制，由伺服电机控制器根据PLC控制器内部程序运行，伺服电机控制器可通过外部接线端口如RS232、RS485接受外部控制信号经过伺服电机控制器内部电路处理形成对应的伺服电机脉冲控制信号，伺服电机依照输入的脉冲信号控制伺服电机的转速，伺服电机依照收到的脉冲信号频率工作，频率高则转速高，频率低则转速低，可真正实现计量泵流量的智能控制和调节，可完全代替手动调节。
附图说明
图1为本发明计量泵的结构示意图；
图2为单泵头结构示意图；
图3为调速整流前流量曲线图；
图4为调速后流量曲线图；
图5为整流后流量曲线图；
图6为双泵头结构示意图；
图7为调速整流前流量曲线图；
图8为调速后流量曲线图；
图9为整流后流量曲线图；
图10为管路加装脉动阻尼器整流后流量曲线图；
其中：1-出口单向阀，2-泵头，3-入口单向阀，4-泵箱体，5-偏心机构，6-蜗轮，7-轴承，8-蜗杆，9-连杆，10-柱塞，11-伺服电机控制器，12-PLC控制器，13-显示屏，14-法兰，15-伺服电机，16-偏心连接铰轴。
具体实施方式
下面通过实施例并结合附图对本发明做进一步说明，但不限于此。
实施例1：
如图1所示，本实施例提供一种智能数字化调节流量的计量泵，包括计量泵泵体、伺服电机15和伺服电机控制器11；
计量泵泵体包括泵箱体4和泵头2，泵箱体4内设置有连杆9、偏心机构5、蜗轮6和蜗杆8，蜗杆8与蜗轮6相啮合，蜗轮6安装在偏心机构5上，偏心机构5与连杆9 一端通过偏心连接铰轴16铰接，连杆9的另一端通过柱塞10与泵头2连接；
蜗杆8的顶端伸出泵箱体4与伺服电机15的输出轴传动连接，伺服电机15与伺服电机控制器11连接。
蜗杆8的底端通过轴承7固定在泵箱体4内。伺服电机15通过法兰14安装在泵箱体4外侧。伺服电机15的输出轴通过联轴器与蜗杆8顶端连接。伺服电机15的源动力传递给蜗杆8，蜗杆8带动蜗轮6旋转，蜗轮6旋转的同时带动偏心机构5转动，从而使偏心机构5上的连杆9带动柱塞10在泵头2内往复运动，由柱塞的往复运动产生出负压和正压，柱塞向泵箱体方向移动时产生负压时使得化学品流体在计量泵入口单向阀进入泵头内部，从而实现对入口单向阀口的开启、出口阀的关闭，柱塞向泵头方向移动时入口单向阀关闭，出口单向阀开启，化学品流体从出口单向阀流出，计量泵可反复重复上述操作实现计量泵化学品投加。
泵头2的上下两侧分别连接入口单向阀3和出口单向阀1。伺服电机15选用松下MHMF系列电机。伺服电机控制器11选用松下MBDLN或安川控制器。
本实施例中的伺服电机也可以用步进电机替代，伺服电机控制器同时也可以用步进电机控制器替代。
计量泵柱塞前端与化学品接触的部位可换成耐化学腐蚀的材料如PTFE或不锈钢隔膜，机械隔膜计量泵如市面上现有的米顿罗G系列、胜瑞兰MB、MC单头双头系列；又或者计量泵柱塞前端与化学品接触的部位可换成液压油，由柱塞推动液压油，液压油另外一端设为耐化学品腐蚀的隔膜如：PTFE或不锈钢，液压隔膜计量泵如市面上现有的米顿罗MROY系列单头双头计量泵，胜瑞兰HE、HG、HK系列单头双头计量泵。
实施例2：
一种智能数字化调节流量的计量泵，结构如实施例1所述，其不同之处在于：伺服电机控制器11连接液晶显示屏13，液晶显示屏13选用西门子6AV6641液晶屏。可供现场工作人员实时查看伺服电机的运行参数，并可将运行参数换算成流量参数和脉冲频率参数。
实施例3：
一种智能数字化调节流量的计量泵，结构如实施例2所述，其不同之处在于：伺服电机控制器11先连接PLC控制器12，PLC控制器12再连接液晶显示屏13。PLC控制器12选用西门子PLCS7-200或三菱PLC控制器。
本实施例技术方案采用PLC控制器，通过向PLC控制器内部写入程序，对伺服电机控制器输入脉冲信号，使伺服电机控制器来控制伺服电机的整个运作过程，从而实现对计量泵流量的调速和整流。
实施例4：
一种智能数字化调节流量的计量泵，结构如实施例1所述，其不同之处在于：偏心机构中心与手动流量调节机构相连(图中未示出)。在不采用PLC控制器智能化作业时，可通过泵箱体外侧的手动流量调节机构来人为控制偏心机构的旋转冲程位移度，来调节计量泵流量。
实施例5：
一种智能数字化调节流量的计量泵的工作方法，利用实施例1所述的计量泵，针对单泵头的应用场合，具体工作过程如下：伺服电机控制器根据PLC控制器的程序指令，对伺服电机输入控制转速的脉冲信号；伺服电机依照收到的脉冲信号频率工作；
通过PLC控制器对输出脉冲信号编程，实现对计量泵流量的自动调节，通过显示屏可将计量泵冲程次数换算成流量值实时在显示屏上显示。
图2为单泵头的结构示意，图3为在没有通过PLC控制器作用下的计量泵的流量曲线图，图4为利用PLC控制器调速后的流量曲线图。
图5为针对计量泵流量曲线正弦波，通过对流量偏小段伺服电机加速，让流量值增加，如图5所示正弦曲线初始段加速让流量达到水平线平均值，对正弦曲线峰值段流量利用伺服电机转速减速(降速)使流量曲线接近水平线平均值，可使流量曲线呈现水平直线，即为稳定流体。
实施例6：
一种智能数字化调节流量的计量泵的工作方法，利用实施例1所述的计量泵，针对双泵头的应用场合，具体工作过程如下：伺服电机控制器根据PLC控制器的程序指令，对伺服电机输入控制转速的脉冲信号；伺服电机依照收到的脉冲信号频率工作；
通过PLC控制器对输出脉冲信号编程，实现对计量泵流量的自动调节，通过显示屏可将计量泵冲程次数换算成流量值实时在显示屏上显示。
图6为双泵头的结构示意，图7为在没有通过PLC控制器作用下的计量泵的正弦波流量曲线图，图8为伺服电机调速(减速)后的曲线图，显示流量减小。
图9为针对计量泵流量曲线正弦波，通过对流量偏小段伺服电机加速，让流量值增 加，如图9所示正弦曲线初始段加速让流量达到水平线平均值，对正弦曲线峰值段流量利用伺服电机转速减速(降速)使流量曲线接近水平线平均值，可使流量曲线呈现水平直线，即为稳定流体。
图10为在投加管路上增设脉动阻尼器后，经过脉动阻尼器再整流，双头泵输出流量曲线趋于水平直线。这样做的好处是，针对化工、日化、铸造、造纸、烟草、水处理，实验室等要求稳定精准投加化学品工艺，有了一种更加可靠的投加设备，可显著提高后期产品优良率，节约化学品投量，为计量泵精准投加开拓更加广泛的领域。
以上所述，仅为本发明的具体实施方式，本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本发明的保护范围之内。

Claims (9)

  1. 一种智能数字化调节流量的计量泵，其特征在于，包括计量泵泵体、伺服电机和伺服电机控制器；
    计量泵泵体包括泵箱体和泵头，泵箱体内设置有连杆、偏心机构、蜗轮和蜗杆，蜗杆与蜗轮相啮合，蜗轮安装在偏心机构上，偏心机构与连杆一端铰接，连杆的另一端通过柱塞与泵头连接；
    蜗杆的顶端伸出泵箱体与伺服电机的输出轴传动连接，伺服电机与伺服电机控制器连接。
  2. 如权利要求1所述的智能数字化调节流量的计量泵，其特征在于，所述伺服电机控制器连接液晶显示屏。
  3. 如权利要求2所述的智能数字化调节流量的计量泵，其特征在于，所述伺服电机控制器先连接PLC控制器，PLC控制器再连接液晶显示屏。
  4. 如权利要求1所述的智能数字化调节流量的计量泵，其特征在于，所述偏心机构中心与手动流量调节机构相连。
  5. 如权利要求1所述的智能数字化调节流量的计量泵，其特征在于，所述蜗杆的底端通过轴承固定在泵箱体内。
  6. 如权利要求1所述的智能数字化调节流量的计量泵，其特征在于，所述伺服电机通过法兰安装在泵箱体外侧。
  7. 如权利要求1所述的智能数字化调节流量的计量泵，其特征在于，所述伺服电机的输出轴通过联轴器与蜗杆顶端连接。
  8. 如权利要求1所述的智能数字化调节流量的计量泵，其特征在于，所述泵头的上下两侧分别连接入口单向阀和出口单向阀。
  9. 一种如权利要求1-8任一项所述的智能数字化调节流量的计量泵的工作方法，其特征在于，包括以下步骤：
    伺服电机控制器根据PLC控制器的程序指令，对伺服电机输入控制转速的脉冲信号；伺服电机依照收到的脉冲信号频率工作；
    通过PLC控制器对输出脉冲信号编程，实现对计量泵流量的自动调节，通过显示屏可将计量泵单位时间的冲程次数换算成流量值实时在显示屏上显示。
PCT/CN2022/077790 2021-04-29 2022-02-25 一种智能数字化调节流量的计量泵及其应用 WO2022227829A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110472442.6 2021-04-29
CN202110472442.6A CN112983774A (zh) 2021-04-29 2021-04-29 一种智能数字化调节流量的计量泵及其应用

Publications (1)

Publication Number Publication Date
WO2022227829A1 true WO2022227829A1 (zh) 2022-11-03

Family

ID=76336509

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/077790 WO2022227829A1 (zh) 2021-04-29 2022-02-25 一种智能数字化调节流量的计量泵及其应用

Country Status (2)

Country Link
CN (1) CN112983774A (zh)
WO (1) WO2022227829A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112983774A (zh) * 2021-04-29 2021-06-18 济南尚海流体控制设备有限公司 一种智能数字化调节流量的计量泵及其应用

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1404403A (en) * 1972-01-31 1975-08-28 Iwaki Co Ltd Variable stroke metering pump
CN102518574A (zh) * 2012-01-09 2012-06-27 马鞍山基业环保科技有限公司 两泵头双调节低脉动隔膜计量泵
CN202764095U (zh) * 2012-06-25 2013-03-06 东毓(宁波)油压工业有限公司 橡胶硫化机伺服节能系统
CN203991180U (zh) * 2014-05-05 2014-12-10 上海傲仁高新科技有限公司 一种用于卷烟机的计量供胶装置
CN204886764U (zh) * 2015-08-07 2015-12-16 鞍山市热工仪表阀门有限公司 一种伺服电动执行机构
CN206287689U (zh) * 2016-11-28 2017-06-30 河南中烟工业有限责任公司 一种zj112卷烟机钢印印刷伺服控制系统
CN206554883U (zh) * 2017-01-23 2017-10-13 中国石油天然气股份有限公司 一种用于油井防腐的加药装置
CN207841896U (zh) * 2018-02-05 2018-09-11 上海华帆机电科技有限公司 一种伺服电缸驱动的变比例装置
CN112983774A (zh) * 2021-04-29 2021-06-18 济南尚海流体控制设备有限公司 一种智能数字化调节流量的计量泵及其应用
CN214887516U (zh) * 2021-04-29 2021-11-26 济南尚海流体控制设备有限公司 一种智能数字化调节流量的计量泵

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1404403A (en) * 1972-01-31 1975-08-28 Iwaki Co Ltd Variable stroke metering pump
CN102518574A (zh) * 2012-01-09 2012-06-27 马鞍山基业环保科技有限公司 两泵头双调节低脉动隔膜计量泵
CN202764095U (zh) * 2012-06-25 2013-03-06 东毓(宁波)油压工业有限公司 橡胶硫化机伺服节能系统
CN203991180U (zh) * 2014-05-05 2014-12-10 上海傲仁高新科技有限公司 一种用于卷烟机的计量供胶装置
CN204886764U (zh) * 2015-08-07 2015-12-16 鞍山市热工仪表阀门有限公司 一种伺服电动执行机构
CN206287689U (zh) * 2016-11-28 2017-06-30 河南中烟工业有限责任公司 一种zj112卷烟机钢印印刷伺服控制系统
CN206554883U (zh) * 2017-01-23 2017-10-13 中国石油天然气股份有限公司 一种用于油井防腐的加药装置
CN207841896U (zh) * 2018-02-05 2018-09-11 上海华帆机电科技有限公司 一种伺服电缸驱动的变比例装置
CN112983774A (zh) * 2021-04-29 2021-06-18 济南尚海流体控制设备有限公司 一种智能数字化调节流量的计量泵及其应用
CN214887516U (zh) * 2021-04-29 2021-11-26 济南尚海流体控制设备有限公司 一种智能数字化调节流量的计量泵

Also Published As

Publication number Publication date
CN112983774A (zh) 2021-06-18

Similar Documents

Publication Publication Date Title
WO2022227829A1 (zh) 一种智能数字化调节流量的计量泵及其应用
CN105179314B (zh) 一种新型轴流风机静叶调节系统
CN214887516U (zh) 一种智能数字化调节流量的计量泵
CN201273254Y (zh) 精确可调给液泵
CN2653168Y (zh) 小型变流量电磁泵
CN108953960A (zh) 一种便于调节的高压力注油设备
CN216525012U (zh) 一种计量泵取样装置
CN102141019A (zh) 一种新型的计量泵
CN203201882U (zh) 一种pid调节的射流泵系统
CN110038745A (zh) 液滴细分的装置和方法
CN209818236U (zh) 活塞泵在线可调装置
CN213598127U (zh) 一种自带安全阀的柱塞式计量泵
CN215964521U (zh) 应用于点胶涂覆系统的供胶设备
CN210949009U (zh) 一种稳定性较高的计量泵
CN210396992U (zh) 一种无脉动计量泵
CN203529902U (zh) 精密陶瓷灌装机
CN202001238U (zh) 一种新型的计量泵
CN208803974U (zh) 一种多缸活塞式低压水泵
CN206617317U (zh) 一种单作用式定量叶片泵
CN206988076U (zh) 一种零泄漏液压隔膜计量泵
CN203906198U (zh) 采用传动结构的柱塞式液压泵
CN210065559U (zh) 一种雾化光触媒分散液供给总成
CN219993844U (zh) 一种轴向柱塞泵
CN216008839U (zh) 一种高精度自动调整型隔膜式计量泵
CN219867405U (zh) 一种mpcvd设备的气体定量填充装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22794309

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 22794309

Country of ref document: EP

Kind code of ref document: A1