CN112648162A - Take accurate measuring pump of position feedback function - Google Patents
Take accurate measuring pump of position feedback function Download PDFInfo
- Publication number
- CN112648162A CN112648162A CN202011610067.9A CN202011610067A CN112648162A CN 112648162 A CN112648162 A CN 112648162A CN 202011610067 A CN202011610067 A CN 202011610067A CN 112648162 A CN112648162 A CN 112648162A
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- Prior art keywords
- metering pump
- conveying
- medium
- component
- assembly
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- Legal status (The legal status 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 status listed.)
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Classifications
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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
- F04B13/00—Pumps specially modified to deliver fixed or variable measured quantities
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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
- 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
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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
- 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
- F04B49/10—Other safety measures
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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
- 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
- F04B49/225—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 with throttling valves or valves varying the pump inlet opening or the outlet opening
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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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
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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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention provides a precision metering pump with a position feedback function, which comprises a medium pumping component, a guiding conveying component, a power driving component, a conveying monitoring component and a flow monitoring component, wherein the guiding conveying component is connected with the medium pumping component, a medium in a medium supply device is driven by the guiding conveying component to enter the medium pumping component, and drives the medium in the medium pumping component to enter the medium using equipment, the power driving component is connected with the guiding and conveying component, the power driving component drives the guiding and conveying component to operate, the conveying and monitoring component is arranged in the guiding and conveying component, the conveying monitoring assembly is used for monitoring the running state of the guide conveying assembly, the flow monitoring assembly is installed between the medium pumping assembly and the medium using equipment, and the flow monitoring assembly is used for monitoring the flow of the medium conveyed to the medium using equipment by the medium pumping assembly. The metering precision of the metering pump is improved, and the application field of the metering pump is expanded.
Description
Technical Field
The invention relates to a metering pump, in particular to a precise metering pump with a position feedback function.
Background
Common metering pump drive division does not manage and control the regional running position of plunger, lead to the regional compression ratio of plunger unstable, it is undulant obvious, and lead to the measurement inaccurate, no outside flow sensing, adopt the open-loop control mode, when control takes place to disturb or step out, can cause the measurement mistake, the poor stability, the measurement precision is less than 0.1mL usually, flow control needs artifical the participation, the debugging cycle length in earlier stage, generally need be greater than 60 minutes's debugging time, the condition such as unable perception putty, cavity and drive division use electrically conductive material, can't be applied to fields such as high-pressure electrostatic spraying. Therefore, there is a need for a structurally optimized metering pump of this type to overcome the above-mentioned drawbacks.
Disclosure of Invention
The invention aims to provide a precise metering pump with a position feedback function, so as to improve the control precision of the metering pump and expand the application range of the metering pump.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a precision metering pump with position feedback, comprising:
the medium pumping component is connected with the medium supply equipment at one end and the medium using equipment at the other end, and the medium in the medium supply equipment can be conveyed into the medium using equipment through the medium pumping component;
the guide conveying component is connected with the medium pumping component, drives the medium in the medium supply device to enter the medium pumping component and drives the medium in the medium pumping component to enter the medium using device;
the power driving component is connected with the guide conveying component and drives the guide conveying component to run;
the conveying monitoring assembly is arranged in the guide conveying assembly, and monitors the running state of the guide conveying assembly;
and the flow monitoring assembly is arranged between the medium pumping assembly and the medium using equipment, and monitors the flow of the medium delivered to the medium using equipment by the medium pumping assembly.
Specifically, the medium pumping assembly includes:
the metering pump body is internally provided with a feeding hole and a discharging hole;
the feeding valve body is arranged on the metering pump body and is positioned at the feeding port, the metering pump body is connected with the medium supply equipment through the feeding valve body, and the medium in the medium supply equipment can be conveyed into the metering pump body through the feeding valve body;
the discharge valve body is arranged on the metering pump body and is positioned at the discharge port, the metering pump body is connected with the medium using equipment through the discharge valve body, and the medium in the metering pump body can be conveyed into the medium using equipment through the discharge valve body.
Further, the guided delivery assembly includes:
the guide pipe shell is connected with the metering pump body;
conveying piston, this conveying piston installs in the guide tube shell, its drive end drives the subassembly with power and links up, it is flexible in the guide tube shell to drive conveying piston by power drive subassembly, its delivery end is arranged in the measurement pump body, when conveying piston stretches out, the internal medium pressure of measuring pump increases, make the feeding valve body close, ejection of compact valve body opens simultaneously, the internal medium of measuring pump is carried to the medium user equipment in through ejection of compact valve body, when conveying piston retracts, the internal medium pressure of measuring pump reduces, make the feeding valve body open, ejection of compact valve body closes simultaneously, the medium in the medium supply equipment is carried to the measuring pump internally through the feeding valve body.
Further, the guiding and conveying assembly further comprises:
and the sealing ring body is arranged at the joint of the guide pipe shell and the metering pump body, is sleeved on the outer wall of the conveying piston, and separates the base beam pump body from the inner cavity of the guide pipe shell.
Further, the power drive assembly includes:
the stepping motor is arranged on the guide pipe shell;
the driving screw rod is positioned in the guide pipe shell, the transmission end of the driving screw rod is connected with a power output shaft of the stepping motor, and the stepping motor drives the driving screw rod to operate;
and the transmission nut is arranged at the transmission end of the conveying piston, sleeved on the driving screw rod and driven by the driving screw rod to stretch.
Further, the power drive assembly further comprises:
and the cover shell is arranged on the guide pipe shell and covers the outer side of the stepping motor.
Further, the delivery monitoring assembly includes:
an origin proximity sensor installed in the guide tube case;
and the origin induction sheet is arranged on the conveying piston, corresponds to the position of the origin proximity sensor, and monitors the position of the conveying piston by the origin sensor.
Further, the flow monitoring assembly includes:
and the flow sensor is arranged between the discharge valve body and the medium using equipment, and is used for monitoring the flow of the medium output from the metering pump body.
In addition, an origin proximity sensor, a flow sensor and a stepping motor are respectively connected with the controller through lines, the origin proximity sensor sends position data of the conveying piston to the controller, the flow sensor sends output flow data of the metering pump body to the controller, and the controller adjusts the running state of the stepping motor according to the flow data and the position data so as to adjust the running state and the medium flow of the conveying piston.
Meanwhile, the metering pump body, the guide pipe shell and the conveying piston are all made of insulating materials.
The invention has the advantages that:
this measuring pump sets up the initial point proximity sensor in the guide tube shell, and set up the initial point response piece on carrying the piston, monitor the position of carrying the piston, discharge gate department at the measurement pump body sets up flow sensor, output flow to the measurement pump body detects, position data and flow data all carry to the controller, the controller is adjusted step motor's running state according to flow data and position data, and then adjust the running state and the medium flow who carry the piston, be favorable to promoting the measurement accuracy of measuring pump, and the measurement pump body, guide tube shell and carry the piston and all adopt the insulating material preparation, can be applied to fields such as high-pressure electrostatic spraying, be favorable to expanding the application of measuring pump.
Drawings
Fig. 1 is a schematic view of the construction of a metering pump according to the invention;
FIG. 2 is a cross-sectional view of the metering pump;
fig. 3 is a schematic diagram of the operation of the metering pump.
Detailed Description
In order to make the technical means, the original characteristics, the achieved purposes and the effects of the invention easy to understand, the invention is further described with reference to the figures and the specific embodiments.
As shown in fig. 1 to 3, the precision metering pump with position feedback function provided by the present invention comprises a medium pumping assembly, a guiding conveying assembly, a power driving assembly, a conveying monitoring assembly and a flow monitoring assembly, wherein one end of the medium pumping assembly is connected with a medium supply device, the other end of the medium pumping assembly is connected with a medium using device, a medium in the medium supply device can be conveyed into the medium using device through the medium pumping assembly, the guiding conveying assembly is connected with the medium pumping assembly, the guiding conveying assembly drives the medium in the medium supply device to enter the medium pumping assembly and drives the medium in the medium pumping assembly to enter the medium using device, the power driving assembly is connected with the guiding conveying assembly, the power driving assembly drives the guiding conveying assembly to operate, the conveying monitoring assembly is installed in the guiding conveying assembly, and the conveying monitoring assembly monitors the operation state of the guiding conveying assembly, the flow monitoring assembly is arranged between the medium pumping assembly and the medium using equipment, and monitors the flow of the medium delivered to the medium using equipment by the medium pumping assembly. In this embodiment, the medium pumping subassembly includes the measurement pump body 110, feeding valve body 120 and ejection of compact valve body 130, feed inlet 111 and discharge gate 112 have been seted up in the measurement pump body, the feeding valve body is installed on the measurement pump body, and be located feed inlet department, the measurement pump body links up with medium supply equipment through the feeding valve body, the medium in the medium supply equipment can be carried to the measurement pump body through the feeding valve body, the bleeder valve is installed on the measurement pump body, and be located discharge gate department, the measurement pump body links up with medium user equipment through ejection of compact valve body, the medium in the measurement pump body can be carried to medium user equipment in through ejection of compact valve body. The feeding valve body and the discharging valve body are both one-way valves. The guide conveying component comprises a guide pipe shell 210, a conveying piston 220 and a sealing ring body 230, the guide pipe shell is connected with the metering pump body, the conveying piston is arranged in the guide pipe shell, the transmission end is connected with the power driving and rotating component, the power driving and rotating component drives the conveying piston to extend and retract in the guide pipe shell, the conveying end is positioned in the metering pump body, when the conveying piston extends out, the medium pressure in the metering pump body is increased, so that the feeding valve body is closed, simultaneously, the discharge valve body is opened, the medium in the metering pump body is conveyed into the medium using equipment through the discharge valve body, when the conveying piston retracts, the pressure intensity of the medium in the metering pump body is reduced, so that the feeding valve body is opened, simultaneously, the discharge valve body is closed, the medium in the medium supply device is conveyed into the metering pump body through the feed valve body, the seal ring body is arranged at the joint of the guide pipe shell and the metering pump body, the outer wall of the conveying piston is sleeved with the base beam pump body, and the inner cavity of the guide pipe shell is separated by the sealing ring body. The power driving and rotating assembly comprises a stepping motor 310, a driving screw 320, a driving nut 330 and a cover shell 340, wherein the stepping motor is installed on the guide tube shell, the driving screw is located in the guide tube shell, the driving end of the driving screw is connected with a power output shaft of the stepping motor, the stepping motor drives the driving screw to operate, the driving nut is installed at the driving end of the conveying piston and sleeved on the driving screw, the driving screw drives the conveying piston to stretch, and the cover shell is installed on the guide tube shell and covers the outer side of the stepping motor. The conveying monitoring assembly comprises an origin proximity sensor 410 and an origin sensing piece 420, the origin proximity sensor is installed in the guide pipe shell, the origin sensing piece is installed on the conveying piston and corresponds to the position of the origin proximity sensor, and the position of the conveying piston is monitored by the origin sensor. The flow monitoring assembly comprises a flow sensor 510, the flow sensor is installed between the discharge valve body and the medium using device a, and the flow sensor monitors the flow of the medium output from the metering pump body. The origin proximity sensor, the flow sensor and the stepping motor are respectively connected with the controller 610 through lines, the origin proximity sensor sends position data of the conveying piston to the controller, the flow sensor sends output flow data of the metering pump body to the controller, and the controller adjusts the running state of the stepping motor according to the flow data and the position data, so that the running state and the medium flow of the conveying piston are adjusted. The metering pump body, the guide pipe shell and the conveying piston are all made of insulating materials.
In the embodiment, the controller adopts a programmable controller, the Boolean operation time is less than 0.08 microsecond/instruction, the PID operation module and the pulse difference output port are provided, the detection precision of the flow sensor is 1 milli-grade, the response time is less than 50 milliseconds, the reverse leakage of the feeding valve body and the discharging valve body is 0.001ccm/min, the concentricity of the driving screw rod and the conveying piston is less than 0.05mm, and the total leakage of the system is less than 0.01ccm/min after the installation is finished. The flow sensor collects flow information in an output pipeline of the metering pump and feeds the flow information back to the programmable controller in real time, the programmable controller receives the flow information fed back by the flow sensor, the pulse number of the stepping motor is controlled in real time through PID, the stepping motor controls the feeding speed of the pump body piston according to the received pulse number, and therefore circulation is achieved, and real-time closed-loop control over liquid flow is achieved. This measuring pump sets up the initial point proximity sensor in the guide tube shell, and set up the initial point response piece on carrying the piston, monitor the position of carrying the piston, discharge gate department at the measurement pump body sets up flow sensor, output flow to the measurement pump body detects, position data and flow data all carry to the controller, the controller is adjusted step motor's running state according to flow data and position data, and then adjust the running state and the medium flow who carry the piston, be favorable to promoting the measurement accuracy of measuring pump, and the measurement pump body, guide tube shell and carry the piston and all adopt the insulating material preparation, can be applied to fields such as high-pressure electrostatic spraying, be favorable to expanding the application of measuring pump.
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the present invention, and not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.
Claims (9)
1. The utility model provides a take precision measurement pump of position feedback function which characterized in that includes:
a media pumping assembly;
the guide conveying component is connected with the medium pumping component;
the power driving component is connected with the guide conveying component;
a conveyance monitoring assembly mounted in the guided conveyance assembly;
a flow monitoring assembly mounted between the media pumping assembly and the media usage device.
2. The precision metering pump with the position feedback function according to claim 1, wherein the medium pumping assembly comprises:
the metering pump body is internally provided with a feeding hole and a discharging hole;
the feeding valve body is arranged on the metering pump body and is positioned at the feeding port;
and the discharge valve body is arranged on the metering pump body and is positioned at the discharge port.
3. The precision metering pump with the position feedback function according to claim 2, wherein the guide conveying assembly comprises:
a guide pipe shell;
and the conveying piston is arranged in the guide pipe shell, and the transmission end of the conveying piston is connected with the power driving and rotating assembly.
4. The precision metering pump with the position feedback function according to claim 3, wherein the guiding and conveying assembly further comprises:
and the sealing ring body is arranged at the joint of the guide pipe shell and the metering pump body and is sleeved on the outer wall of the conveying piston.
5. The precision metering pump with the position feedback function according to claim 3, wherein the power driving assembly comprises:
a stepping motor;
the driving screw rod is positioned in the guide pipe shell, and the transmission end of the driving screw rod is connected with a power output shaft of the stepping motor;
and the transmission nut is arranged at the transmission end of the conveying piston and sleeved on the driving screw rod.
6. The precision metering pump with the position feedback function according to claim 5, wherein the power driving assembly further comprises:
and the cover shell is arranged on the guide pipe shell and covers the outer side of the stepping motor.
7. The precision metering pump with the position feedback function according to claim 3, wherein the conveying monitoring assembly comprises:
an origin proximity sensor installed in the guide tube case;
and the origin induction sheet is arranged on the conveying piston and corresponds to the position of the origin proximity sensor.
8. The precision metering pump with the position feedback function according to claim 2, wherein the flow monitoring assembly comprises:
and the flow sensor is arranged on the metering pump body and is positioned at the discharge port.
9. The precision metering pump with the position feedback function according to claim 3, wherein:
the metering pump body, the guide pipe shell and the conveying piston are all made of insulating materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011610067.9A CN112648162A (en) | 2020-12-30 | 2020-12-30 | Take accurate measuring pump of position feedback function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011610067.9A CN112648162A (en) | 2020-12-30 | 2020-12-30 | Take accurate measuring pump of position feedback function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112648162A true CN112648162A (en) | 2021-04-13 |
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ID=75364254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011610067.9A Pending CN112648162A (en) | 2020-12-30 | 2020-12-30 | Take accurate measuring pump of position feedback function |
Country Status (1)
| Country | Link |
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| CN (1) | CN112648162A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101356373A (en) * | 2004-11-23 | 2009-01-28 | 恩特格里公司 | Systen and method for position control of a mechanical piston in a pump |
| CN203098176U (en) * | 2012-11-28 | 2013-07-31 | 钛谷（天津）科技有限公司 | Novel metering pump |
| CN104074705A (en) * | 2014-06-26 | 2014-10-01 | 成都西屋科技发展有限公司 | Electric metering plunger pump |
| CN105257496A (en) * | 2015-09-24 | 2016-01-20 | 成都西屋科技发展有限公司 | Micro-metering pump and use method thereof |
| CN105804964A (en) * | 2016-03-15 | 2016-07-27 | 北京星达科技发展有限公司 | High-pressure constant flow pump and flow closed-loop control method |
| CN110701017A (en) * | 2019-11-21 | 2020-01-17 | 广东力王新能源股份有限公司 | Precision servo plunger metering pump |
| CN210460974U (en) * | 2019-06-05 | 2020-05-05 | 南京雷奥仪器有限责任公司 | Accurate input ware of biochemical appearance reagent |
| CN210479100U (en) * | 2019-07-31 | 2020-05-08 | 邹忠强 | Fluid material filling device |
| CN210799249U (en) * | 2019-08-20 | 2020-06-19 | 重庆宏广机电工程有限公司 | High-viscosity material quantitative conveying device |
-
2020
- 2020-12-30 CN CN202011610067.9A patent/CN112648162A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101356373A (en) * | 2004-11-23 | 2009-01-28 | 恩特格里公司 | Systen and method for position control of a mechanical piston in a pump |
| CN203098176U (en) * | 2012-11-28 | 2013-07-31 | 钛谷（天津）科技有限公司 | Novel metering pump |
| CN104074705A (en) * | 2014-06-26 | 2014-10-01 | 成都西屋科技发展有限公司 | Electric metering plunger pump |
| CN105257496A (en) * | 2015-09-24 | 2016-01-20 | 成都西屋科技发展有限公司 | Micro-metering pump and use method thereof |
| CN105804964A (en) * | 2016-03-15 | 2016-07-27 | 北京星达科技发展有限公司 | High-pressure constant flow pump and flow closed-loop control method |
| CN210460974U (en) * | 2019-06-05 | 2020-05-05 | 南京雷奥仪器有限责任公司 | Accurate input ware of biochemical appearance reagent |
| CN210479100U (en) * | 2019-07-31 | 2020-05-08 | 邹忠强 | Fluid material filling device |
| CN210799249U (en) * | 2019-08-20 | 2020-06-19 | 重庆宏广机电工程有限公司 | High-viscosity material quantitative conveying device |
| CN110701017A (en) * | 2019-11-21 | 2020-01-17 | 广东力王新能源股份有限公司 | Precision servo plunger metering pump |
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