CN111060165B - High-precision punching plate flowmeter - Google Patents
High-precision punching plate flowmeter Download PDFInfo
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- CN111060165B CN111060165B CN201911336804.8A CN201911336804A CN111060165B CN 111060165 B CN111060165 B CN 111060165B CN 201911336804 A CN201911336804 A CN 201911336804A CN 111060165 B CN111060165 B CN 111060165B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
- G01F1/36—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
- G01F1/40—Details of construction of the flow constriction devices
- G01F1/42—Orifices or nozzles
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- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention relates to a high-precision punching plate flowmeter which comprises a blanking box, a punching mechanism, a measuring mechanism and a correcting mechanism, wherein the top of the blanking box is provided with a feeding hole, the bottom of the blanking box is provided with a discharging hole, the punching mechanism is arranged in the blanking box and is connected with the measuring mechanism and the correcting mechanism; the plate punching mechanism comprises a punching plate, a support, a platform, an upright post and a first rotating unit; the measuring mechanism comprises a push rod, a second rotating unit, a third rotating unit, a force measuring sensor and a blocking seat; the correcting mechanism comprises a laser unit, an angle interference unit and an angle reflection unit; according to the invention, the deflection angle is measured by the correction mechanism and is integrated with the measurement structure of the measurement mechanism, so that accurate actual impulse is obtained, the measurement precision is greatly improved, and the method is worthy of great popularization.
Description
Technical Field
The invention belongs to the technical field of metering equipment, and particularly relates to a high-precision punching plate flowmeter.
Background
In industrial production, it is often necessary to perform dynamic continuous metering of powder or fine materials conveyed in a process flow in order to achieve the purpose of accurately quantifying and controlling the powder or fine materials. The existing punching plate or sliding plate type flowmeter has the characteristics of simple structure and quick response, but the measuring result has deviation from the actual result due to structural defects in a force measuring mechanism and a force sensing mode.
Disclosure of Invention
The present invention has been made to solve the above problems, and an object of the present invention is to provide a high-accuracy flow meter with a punched plate.
The invention realizes the purpose through the following technical scheme:
a high-precision plate punching flowmeter comprises a blanking box, a plate punching mechanism, a measuring mechanism and a correcting mechanism, wherein a feeding hole is formed in the top of the blanking box, a discharging hole is formed in the bottom of the blanking box, the plate punching mechanism is arranged inside the blanking box, and the plate punching mechanism is connected with the measuring mechanism and the correcting mechanism;
the plate punching mechanism comprises a punching plate, a support, a platform, a stand column and a first rotating unit, wherein the punching plate is obliquely arranged below a feeding hole of the blanking box, the bottom of the punching plate is fixedly arranged on the platform through the support, the bottom of the platform is rotatably connected with the top end of the stand column through the first rotating unit, and the lower end of the stand column is fixedly connected with the blanking box. The impulse plate is positioned below the feeding hole to receive materials, and is assembled and supported through the support and the platform, the bottom of the platform is hinged with the upright post to form a support structure capable of enabling the impulse plate to rotate around the first rotating unit, and the support can decompose a horizontal component force generated by the impulse plate under stress and transmit the horizontal component force to the measuring mechanism;
the measuring mechanism comprises a push rod, a second rotating unit, a third rotating unit, a force measuring sensor and a blocking seat, one end of the push rod is connected with the support through the second rotating unit, the other end of the push rod is connected with the force measuring sensor through the third rotating unit, and the force measuring sensor is arranged on the blocking seat. The push rod transmits the horizontal component force transmitted by the support to the force transducer, and the force transducer measures the horizontal component force; the two rotating units enable two ends of the push rod not to be subjected to moment, and horizontal component force is not dispersed.
The correcting mechanism comprises a laser unit, an angle interference unit and an angle reflection unit, the right side face of the support is arranged on the angle reflection unit, the angle interference unit is arranged between a laser head of the laser unit and the angle reflection unit, the laser unit emits laser, the laser returns to a receiver of the laser unit through the angle interference unit and the angle reflection unit, the laser generates interference fringes through the angle interference unit, an inclination angle signal is generated after the laser unit receives the interference fringes, and the angle between the right side face of the support and a vertical plane is measured.
As a further optimization scheme of the invention, the impulse plate is arranged by inclining at an angle of 45 degrees, the cross section of the support is in an isosceles right triangle shape, the inclined surface of the support is fixedly connected with the impulse plate, and the bottom surface of the support is fixedly connected with the platform.
As a further optimization scheme of the invention, the first rotating unit comprises a rotating shaft and a shaft seat, the bottom of the platform is fixedly arranged on the rotating shaft, and two ends of the rotating shaft are connected with the shaft seat at the top of the upright post through bearings.
As a further optimization scheme of the invention, the second rotating unit comprises two rotating seats, the two rotating seats are respectively and fixedly connected with the support and the push rod, and the two rotating seats are hinged through a pin shaft.
As a further optimization scheme of the invention, the third rotating unit comprises two rotating seats, the two rotating seats are respectively and fixedly connected with the force transducer and the push rod, and the two rotating seats are hinged through a pin shaft.
As a further optimization scheme of the invention, the angle interference unit comprises an interference mirror and a reflector, the angle reflection unit comprises two reflection groups, the reflection groups comprise two reflectors which are arranged vertically, emergent light of the laser unit is divided into a horizontal beam and a vertical beam through light splitting of the interference mirror, the vertical beam is reflected by the reflector of the angle interference unit and the reflection groups of the angle reflection unit and then returns to the reflector of the angle interference unit, the horizontal beam is reflected by the reflection groups of the angle reflection unit and then returns to the interference mirror, laser generates interference fringes on the interference mirror, and an inclination angle signal is generated after the laser unit receives the interference fringes.
As a further optimization scheme of the invention, the measuring mechanism and the correcting mechanism are both connected with a measuring system, the measuring system comprises an analog input module, an amplifying module, an analog-to-digital converter, a microprocessor, a photoelectric coupler and a communication output module, a signal output end of a force transducer of the measuring mechanism and a signal output end of a laser unit of the correcting mechanism are respectively connected with the analog input module, the analog input module is connected with the analog-to-digital converter through the amplifying module, a signal output end of the analog-to-digital converter is connected with a signal input end of the microprocessor, and a signal output end of the microprocessor is connected with the communication output module through the photoelectric. Analog signals output by the measuring mechanism and the correcting mechanism are received through the analog input module, amplified through the amplifying module, converted into digital signals through the analog-to-digital converter and transmitted to the microprocessor, and processed by the microprocessor and then output to the upper computer through the communication output module.
The invention has the beneficial effects that:
1) according to the invention, the deflection angle is measured by the correction mechanism and is integrated with the measurement structure of the measurement mechanism, so that accurate actual impulse is obtained, and the measurement precision is greatly improved;
2) the punch rod is rotationally connected with the support and the force measuring sensor, so that the component force transmitted to the force measuring sensor cannot be dispersed due to the moment of the punch rod, the reduction of the measuring force is avoided, and the error is reduced.
Drawings
FIG. 1 is a schematic structural diagram of the present invention in accordance with one embodiment;
FIG. 2 is a schematic structural diagram of a calibration mechanism according to the present invention in accordance with one embodiment;
FIG. 3 is a schematic structural diagram of a measurement system according to the present invention in one embodiment;
fig. 4 is a schematic force-resolved view of an impulse plate according to the first embodiment of the present invention.
In the figure: the device comprises a blanking box 1, a feeding hole 2, an impact plate 3, a support 4, a platform 5, a stand column 6, a first rotating unit 7, a push rod 8, a second rotating unit 9, a third rotating unit 10, a force measuring sensor 11, a blocking seat 12, a laser unit 13, an angle interference unit 14, an angle reflection unit 15, an interference mirror 16 and a reflection mirror 17.
Detailed Description
The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention; in the description of the present invention, the meaning of "plurality" or "a plurality" is two or more unless otherwise specified.
Example one
As shown in fig. 1-4, a high-precision plate-punching flowmeter comprises a blanking box 1, a plate-punching mechanism, a measuring mechanism and a correcting mechanism, wherein a feeding hole 2 is formed in the top of the blanking box 1, a discharging hole is formed in the bottom of the blanking box, the plate-punching mechanism is arranged in the blanking box 1 and is connected with the measuring mechanism and the correcting mechanism;
the plate punching mechanism comprises a punching plate 3, a support 4, a platform 5, an upright post 6 and a first rotating unit 7, wherein the punching plate 3 is obliquely arranged below a feed inlet 2 of a blanking box 1, the bottom of the punching plate 3 is fixedly arranged on the platform 5 through the support 4, the bottom of the platform 5 is rotatably connected with the top end of the upright post 6 through the first rotating unit 7, and the lower end of the upright post 6 is fixedly connected with the blanking box 1. The impulse plate 3 is positioned below the feed port 2 to receive materials, and is assembled and supported through the support 4 and the platform 5, the bottom of the platform 5 is hinged with the upright post 6 to form a support structure capable of enabling the impulse plate 3 to rotate around the first rotating unit 7, and the support 4 can decompose the force borne by the impulse plate 3 into a horizontal component force and transmit the horizontal component force to the measuring mechanism;
preferably, the impulse plate 3 is inclined at an angle of 45 degrees, the cross section of the support 4 is an isosceles right triangle, the inclined plane of the support 4 is fixedly connected with the impulse plate 3, and the bottom surface is fixedly connected with the platform 5.
Preferably, the first rotating unit 7 comprises a rotating shaft and a shaft seat, the bottom of the platform 5 is fixedly arranged on the rotating shaft, and two ends of the rotating shaft are connected with the shaft seat at the top of the upright post 6 through bearings.
The measuring mechanism comprises a push rod 8, a second rotating unit 9, a third rotating unit 10, a force measuring sensor 11 and a blocking seat 12, one end of the push rod 8 is connected with the support 4 through the second rotating unit 9, the other end of the push rod is connected with the force measuring sensor 11 through the third rotating unit 10, and the force measuring sensor 11 is arranged on the blocking seat 12. The push rod 8 transmits the horizontal component force transmitted by the support 4 to the load cell 11, and the horizontal component force is measured by the load cell 11; the two rotating units prevent the two ends of the push rod 8 from being subjected to moment, and horizontal component force is not dispersed.
The correcting mechanism comprises a laser unit 13, an angle interference unit 14 and an angle reflection unit 15, the angle reflection unit 15 is arranged on the right side face of the support 4, the angle interference unit 14 is arranged between a laser head of the laser unit 13 and the angle reflection unit 15, the laser unit 13 emits laser, the laser returns to a receiver of the laser unit 13 through the angle interference unit 14 and the angle reflection unit 15, the laser generates interference fringes through the angle interference unit 14, an inclination angle signal is generated after the laser unit 13 receives the interference fringes, and the angle between the right side face of the support 4 and a vertical plane is measured.
Preferably, the second rotating unit 9 comprises two rotating seats, the two rotating seats are respectively and fixedly connected with the support 4 and the push rod 8, and the two rotating seats are hinged through a pin shaft.
Preferably, the third rotating unit 10 includes two rotating seats, the two rotating seats are respectively and fixedly connected with the load cell 11 and the push rod 8, and the two rotating seats are hinged through a pin shaft.
Preferably, the angle interference unit 14 includes an interference mirror 16 and a reflection mirror 17, the angle reflection unit 15 includes two reflection sets, the reflection set includes two reflection mirrors 17 arranged perpendicular to each other, the outgoing light of the laser unit 13 is split into a horizontal beam and a vertical beam by the interference mirror 16, the vertical beam returns to the reflection mirror 17 of the angle interference unit 14 after being reflected by the reflection mirror 17 of the angle interference unit 14 and the reflection set of the angle reflection unit 15, the horizontal beam returns to the interference mirror 16 after being reflected by the reflection set of the angle reflection unit 15, the laser generates interference fringes on the interference mirror 16, and generates an inclination signal after being received by the laser unit 13.
Preferably, the laser unit 13 employs an SJ6000 laser interferometer. Capable of emitting and receiving laser light.
The measuring mechanism and the correcting mechanism are connected with a measuring system, the measuring system comprises an analog input module, an amplifying module, an analog-to-digital converter, a microprocessor, a photoelectric coupler and a communication output module, the signal output end of a force sensor 11 of the measuring mechanism and the signal output end of a laser unit 13 of the correcting mechanism are respectively connected with the analog input module, the analog input module is connected with the analog-to-digital converter through the amplifying module, the signal output end of the analog-to-digital converter is connected with the signal input end of the microprocessor, and the signal output end of the microprocessor is connected with the communication output module through the photoelectric. Analog signals output by the measuring mechanism and the correcting mechanism are received through the analog input module, amplified through the amplifying module, converted into digital signals through the analog-to-digital converter and transmitted to the microprocessor, and processed by the microprocessor and then output to the upper computer through the communication output module.
Preferably, the microprocessor is also connected with a display unit. The display function of data is provided as a display unit through a display screen or the like.
The principle of the invention is as follows:
as shown in the figure, the impact force F is applied to the impact plate 3 in the standard stateGeneral assemblyShould be decomposed into a vertical component FVertical markAnd a component force F in the horizontal directionFlat plateF can be obtained by measurement according to the inclination angle of the impulse plate 3Flat plateCalculating FGeneral assembly；
In practice, however, the momentum plate 3 and its platform 5 inevitably undergo a certain angular displacement, represented by the angle β between the right side of the support 4 and the vertical plane, so that the component force in the vertical direction should be F as shown in the figureVertical compactionAt this time, F stands upright and FFlat plateIs 90 + beta, so that in practice FGeneral assemblyShould be according to FVertical compactionThe angle of the F-plane is decomposed, and the measured beta can obtain the actual FGeneral assemblyAnd a more accurate weighing result is obtained.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (6)
1. A high accuracy dashes board flowmeter which characterized in that: the blanking device comprises a blanking box, a plate punching mechanism, a measuring mechanism and a correcting mechanism, wherein a feeding hole is formed in the top of the blanking box, a discharging hole is formed in the bottom of the blanking box, the plate punching mechanism is arranged in the blanking box, and the plate punching mechanism is connected with the measuring mechanism and the correcting mechanism;
the plate punching mechanism comprises a punching plate, a support, a platform, an upright post and a first rotating unit, wherein the punching plate is obliquely arranged below a feeding hole of the blanking box;
the measuring mechanism comprises a push rod, a second rotating unit, a third rotating unit, a force measuring sensor and a blocking seat, one end of the push rod is connected with the support through the second rotating unit, the other end of the push rod is connected with the force measuring sensor through the third rotating unit, and the force measuring sensor is arranged on the blocking seat;
the correcting mechanism comprises a laser unit, an angle interference unit and an angle reflection unit, the angle reflection unit is arranged on the right side surface of the support, the angle interference unit is arranged between a laser head of the laser unit and the angle reflection unit, the laser unit emits laser, the laser returns to a receiver of the laser unit through the angle interference unit and the angle reflection unit, the laser generates interference fringes through the angle interference unit, generates an inclination angle signal after being received by the laser unit, and measures the angle between the right side surface of the support and a vertical plane;
the angle interference unit includes an interference mirror and a speculum, the angle reflection unit includes two reflection groups, the reflection group includes the speculum that two mutually perpendicular set up, the emergent light of laser unit is divided into horizontal light beam and vertical light beam through the beam split of interference mirror, vertical light beam returns the speculum of angle interference unit again after the speculum of angle interference unit and the reflection of angle reflection unit's reflection group reflection, the horizontal light beam returns the interference mirror after the reflection of angle reflection unit's reflection group, laser produces the interference fringe on the interference mirror, produce the inclination signal after receiving through the laser unit.
2. A high accuracy die plate flowmeter according to claim 1 wherein: the impulse plate is inclined at an angle of 45 degrees, the cross section of the support is in the shape of an isosceles right triangle, the inclined plane of the support is fixedly connected with the impulse plate, and the bottom surface of the support is fixedly connected with the platform.
3. A high accuracy die plate flowmeter according to claim 1 wherein: the first rotating unit comprises a rotating shaft and a shaft seat, the bottom of the platform is fixedly arranged on the rotating shaft, and two ends of the rotating shaft are connected with the shaft seat at the top of the upright post through bearings.
4. A high accuracy die plate flowmeter according to claim 1 wherein: the second rotating unit comprises two rotating seats, the two rotating seats are respectively and fixedly connected with the support and the push rod, and the two rotating seats are hinged through a pin shaft.
5. A high accuracy die plate flowmeter according to claim 1 wherein: the third rotating unit comprises two rotating seats, the two rotating seats are respectively and fixedly connected with the force measuring sensor and the push rod, and the two rotating seats are hinged through a pin shaft.
6. A high accuracy die plate flowmeter according to claim 1 wherein: the measuring mechanism and the correcting mechanism are connected with a measuring system, the measuring system comprises an analog input module, an amplifying module, an analog-to-digital converter, a microprocessor, a photoelectric coupler and a communication output module, a signal output end of a force sensor of the measuring mechanism and a signal output end of a laser unit of the correcting mechanism are respectively connected with the analog input module, the analog input module is connected with the analog-to-digital converter through the amplifying module, a signal output end of the analog-to-digital converter is connected with a signal input end of the microprocessor, and a signal output end of the microprocessor is connected with the communication output module through the photoelectric coupler; analog signals output by the measuring mechanism and the correcting mechanism are received through the analog input module, amplified through the amplifying module, converted into digital signals through the analog-to-digital converter and transmitted to the microprocessor, and processed by the microprocessor and then output to the upper computer through the communication output module.
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| CN201911336804.8A CN111060165B (en) | 2019-12-23 | 2019-12-23 | High-precision punching plate flowmeter |
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| CN201911336804.8A CN111060165B (en) | 2019-12-23 | 2019-12-23 | High-precision punching plate flowmeter |
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| CN111060165B true CN111060165B (en) | 2021-06-29 |
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| CN116351749B (en) * | 2023-04-07 | 2024-05-24 | 合肥固泰自动化有限公司 | Automatic loading vehicle contour detection device capable of automatically removing dust |
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| CN103954323A (en) * | 2014-05-13 | 2014-07-30 | 陈立明 | High-precision impulse plate flow meter |
| CN104808254A (en) * | 2015-04-23 | 2015-07-29 | 浙江大学 | Optical multiple-frequency laser interference system for high-precision absolute gravity meter and application thereof |
| CN208199014U (en) * | 2018-04-20 | 2018-12-07 | 济南高更食品科技有限公司 | A kind of powdery flavouring hybrid packed system automatically |
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| JP5079401B2 (en) * | 2007-06-25 | 2012-11-21 | サーパス工業株式会社 | Pressure sensor, differential pressure type flow meter and flow controller |
| CN206627163U (en) * | 2017-03-17 | 2017-11-10 | 合肥固泰自动化有限公司 | A kind of suspension type impact flow meter |
| CN106918371B (en) * | 2017-03-17 | 2019-02-26 | 合肥固泰自动化有限公司 | A kind of force transmission mechanism of flowmeter |
| CN106840280A (en) * | 2017-03-17 | 2017-06-13 | 合肥固泰自动化有限公司 | A kind of suspension type impact flow meter |
| CN209027591U (en) * | 2018-12-17 | 2019-06-25 | 大连麦森哲科技有限公司 | A kind of novel high-precision impact flow meter |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201463847U (en) * | 2009-05-06 | 2010-05-12 | 湖北工业大学 | Two-dimensional small-angle measuring device based on shape of interference fringe |
| CN103954323A (en) * | 2014-05-13 | 2014-07-30 | 陈立明 | High-precision impulse plate flow meter |
| CN104808254A (en) * | 2015-04-23 | 2015-07-29 | 浙江大学 | Optical multiple-frequency laser interference system for high-precision absolute gravity meter and application thereof |
| CN208199014U (en) * | 2018-04-20 | 2018-12-07 | 济南高更食品科技有限公司 | A kind of powdery flavouring hybrid packed system automatically |
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