CN101833885B - Experimental apparatus for dynamic quantitative weighing - Google Patents
Experimental apparatus for dynamic quantitative weighing Download PDFInfo
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- CN101833885B CN101833885B CN2009102371664A CN200910237166A CN101833885B CN 101833885 B CN101833885 B CN 101833885B CN 2009102371664 A CN2009102371664 A CN 2009102371664A CN 200910237166 A CN200910237166 A CN 200910237166A CN 101833885 B CN101833885 B CN 101833885B
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- feeding box
- material feeding
- batch
- quantitative weighing
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Abstract
The invention relates to an experimental apparatus for dynamic quantitative weighing, belonging to the field of experimental teaching instruments, and comprising a weighing device and a pressure sensor (18). The weighing device comprises a solid feed box (2) and a liquid feed box (3) both capable of feeding continuously, a mixture tank (1) arranged on the pressure sensor (18) to receive materials from the solid feed box (2) and the liquid feed box (3), a discharge valve (13) arranged under the mixture tank (1), a mixing box (17) arranged under the discharge valve (13)and separated from the mixture tank (1) and a connecting terminal set transmitting a pressure sensor signal to outside. The invention provides a physical simulation platform for dynamic quantitative weighing study, which reflects the basic characteristics of relevant physical quantities in actual production and embodies the technology characteristic of the industrial field. The invention also provides an electrical interface which is conveniently connected with a signal acquisition unit and a controller, such as a computer and the like, thereby providing material condition for studying a control algorithm that improves the weighting accuracy and the weighting speed.
Description
Technical field
The present invention relates to a kind of experimental apparatus for dynamic quantitative weighing, this device can be used for experimental teaching, also can be used for experimental study or other field.
Background technology
In the commercial production scene, usually need in carrying out, production run measure the weight of material in the normal operation, and in this case, weight is a time dependent variable often.The process of material dynamic quantitative weighing is: start feed arrangement; Material enters scale hooper under the effect of self gravitation; The LOAD CELLS that is contained on the hopper converts weight signal to corresponding with it electric signal, sends into computing machine and carry out data processing after amplifier amplifies; When arriving predetermined value, stop charging, finish quantitative weighing one time.Cause the quantitative weighing reasons of error that many aspects are arranged, its principal element is as follows:
(1) influence of measurement error of weighing measurement link;
(2) the action hysteresis and the inertia effect thereof of charging gear;
(3) influence of the aerial drop of material;
(4) the non-linear and forced coupling of feed driving mechanism (alternating current generator);
(5) in the production run to the stirring of material;
(6) the heating factor affecting in the mixing of materials process.
In the dynamic quantitative weighing problem, two key factors are arranged: the one, weighing accuracy, the 2nd, the speed of weighing, this two aspect will be taken all factors into consideration and take into account simultaneously.Containing vibration, non-linear, time in the dynamic quantitative weighing process becomes and factor such as random disturbance.When speeding up when weighing, the underdamping of LOAD CELLS concussion, the material impulsive force changes the vibration and the uncertain material that flies that cause in the air and waits disturbing factor all will influence weighing accuracy, so the reduction of just having to the sometimes speed of weighing.The pin-point accuracy that realizes simultaneously weighing is one of difficult problem of metering field with dynamic quantitative weighing at a high speed.
Summary of the invention
The objective of the invention is to: the simulation physical device designs a kind of experimental provision, for the research trends quantitative weighing provides a physical platform.
To achieve these goals, the present invention has taked following technical scheme: design a kind of experimental apparatus for dynamic quantitative weighing, comprise structural framing, be installed in meausring apparatus, pressure transducer in the structural framing.But wherein meausring apparatus comprise continuous feed solid-state material material feeding box and liquid material material feeding box, be suspended on the solid-state material material feeding box of reception on the pressure transducer and the potpourri batch can of liquid material material feeding box material, and potpourri batch can bottom is provided with bleeder valve, and is provided with the mixer that separates with the potpourri batch can below bleeder valve; This device also is provided with pressure sensor signal is connected to outside connection terminal group.
Described solid-state material material feeding box can be the oscillatory type material feeding box, by vibration granular solid-state material is carried out discharging.Vibrating motor is installed on casing, and casing is installed on the structural framing by spring, and its vibration control end (vibrating motor lead-in wire) is connected to the connection terminal group.
Described solid-state material material feeding box also can carry out discharging by helixes feed equipment, this helixes feed equipment is installed in the material feeding box bottom, reach the screw feeder by the driven by motor rotation that is provided with by pipe in pipe and constitute, wherein the control end of motor is connected to the connection terminal group.
Described liquid material material feeding box is by feed liquor valve control discharging.This feed liquor valve can adopt the adjustable electric magnet valve.
Can in described potpourri batch can stirrer be set, stirrer is rotated by motor drives, and its blade mixes material in the material mixed process and can mix material, with the simulation real scene.This stirrer is installed on the structural framing, and with 1 noncontact of potpourri batch can, the stirrer Motor Control is connected to the connection terminal group.
Can also in described potpourri batch can, electric heater and temperature sensor be set, can heat and fixed temperature control to material in the mixing of materials process, further simulate real scene.Electric heater and temperature sensor signal are connected to the connection terminal group.
The bleeder valve of described potpourri batch can 1 bottom is connected to discharge bucket, and the discharge bucket bottom is provided with screen cloth, mixer is set below the screen cloth; Described liquid material material feeding box is supplied water from mixer by last hydroelectric machine, and in the liquid material material feeding box liquid level sensor is set, and liquid level sensor is connected to the connection terminal group, and is connected with last hydroelectric machine, and the start and stop of hydroelectric machine are gone up in control.
Described bleeder valve can adopt solenoid valve, and its control end is connected to the connection terminal group.
Described potpourri batch can be suspended on the supporting surface of structural framing by three " ears " that evenly are provided with on 360 ° of circumference of potpourri batch can waist, and respectively establishes a pressure transducer below three " ear ".
Good effect of the present invention: a kind of emulated physics platform of research trends quantitative weighing is provided, and this platform has reflected the fundamental characteristics of related physical quantity in the actual production, has embodied the process characteristic of industry spot; Electric interfaces is provided, can be connected with controller with signal pickers such as computing machines easily, for the research of carrying out the control algolithm that improves weighing accuracy and speed provides material conditions, also opened up new thinking for the contradiction that solves dynamic weighing accuracy and speed.
Description of drawings
Fig. 1 is the synoptic diagram of a preferential embodiment of experimental apparatus for dynamic quantitative weighing of the present invention;
Fig. 2 is the connection terminal group 1 of the embodiment of experimental apparatus for dynamic quantitative weighing shown in Figure 1;
Fig. 3 is the connection terminal group 2 of the embodiment of experimental apparatus for dynamic quantitative weighing shown in Figure 1.
Among the figure: 1, potpourri batch can, 2, solid-state material material feeding box, 3, liquid material material feeding box, 4, helixes feed equipment, 5, stirrer, 6, temperature sensor, 7, liquid level sensor, 8, " ear ", 9, electric heater, 10, screw feeding motor, 11, stir motor, 12, go up hydroelectric machine, 13, bleeder valve, 14, the feed liquor valve, 15, discharge bucket, 16, screen cloth, 17, mixer, 18, pressure transducer.
Embodiment
Below in conjunction with accompanying drawing the preferred implementation among the present invention is elaborated:
Dynamic quantitative weighing system experimental device in the present embodiment is mainly formed pressure sensor 18, temperature sensor 6, liquid level sensor 7 on it by potpourri batch can 1, helixes feed equipment 4, solid-state material material feeding box 2 and liquid material material feeding box 3.The signal of experimental provision theory of constitution as shown in Figure 1.
Potpourri batch can 1 forms by organic glass is bonding.The tank top has two imports to be respectively granular material import and liquid material inlet, and pot bottom has a mixture outlet, by bleeder valve 13 controls, salable waterproof during valve closing.Distribute 3 on tank body 2/3rds place's circumference " ear " 8, three micro-pressure transducers 18 are installed in its underpart.And electric heater and temperature sensor 6 are set in the potpourri batch can 1.
Stirrer 5 adopts on the stainless steel major axis installs mixing arm, uses reducing motor to drive as stirring motor 11.
Solid-state material material feeding box 2 is deposited granular material, by reinforced manually.Liquid material material feeding box 3 substitutes liquid material with water and leaves in the liquid material material feeding box 3 as the liquid material storage tank.Water in the liquid material material feeding box 3 is sent into potpourri batch can 1 by feed liquor valve 14, and feed liquor valve 14 adopts solenoid valve or adjustable electric magnet valve.The discharging of potpourri batch can 1 is by bleeder valve 13 control, and the discharge bucket 15 with screen cloth 16 is equipped with in the bottom, so as with mixed granular material and moisture from.Granular material after the separation is stayed in the discharge bucket 15, in the mixer 17 below water flows into.But discharge bucket and discharging valve hand assembled, dismounting.In addition, liquid material material feeding box 3 is supplied water from mixer 17 by last hydroelectric machine 12, and in the liquid material material feeding box 3 liquid level sensor 7 is set, and controls the start and stop of going up hydroelectric machine 12 by liquid level sensor.
Whole experiment device is fixed on the aluminum alloy frame, 700 (wide) * 1400 (length) * 1800 (height), and there is castor the bottom for four jiaos.
Granular material adopts polyvinyl chloride particles, and proportion is slightly larger than water.Be convenient to moisture from, reusable, clean health.
Electric part in the present embodiment mainly comprises sensor and digital display meter and motor:
1. sensor and digital display meter
Pressure transducer, liquid level sensor and temperature sensor are installed on the experimental provision.Number of sensors and effect are as table 1.
Table 1
| Sequence number | | Quantity | Effect | |
| 1 | Pressure transducer and |
3 | |
|
| 2 | Liquid level sensor and |
1 | Liquid material material feeding |
|
| 3 | |
1 | The mixture temperature |
2. motor and other
Be furnished with motor, screw feeding motor and the electric heater of stirring on the experimental provision, also have some solenoid valves, concrete as table 2.
Table 2
| Sequence number | | Quantity | Effect | |
| 1 | |
1 | Mix material and make it even | |
| 2 | The |
1 | Drive |
|
| 3 | Last |
1 | Water is expected material feeding box from the mixer pump to |
|
| 4 | |
1 | The heating of |
|
| 5 | The |
1 | The charging of the liquid material of control |
| 6 | |
1 | The batch mixing material is emitted from potpourri batch can 1 |
| 7 | |
1 | Drive the screw feeding motor, realize frequency control, realize the adjusting of |
| 8 | The air |
1 | The power |
| 9 | |
1 | Under-voltage, o- |
| 10 | The direct current |
7 | Motor, |
| 11 | |
3 | The working sensor power supply |
Each electric signal causes the connection terminal group, and terminal group is divided into connection terminal group 1 and connection terminal group 2, respectively as Fig. 2, Fig. 3.Can be connected with opertaing devices such as computing machines by the connection terminal group, control the work of above-mentioned electric device by setting program, and gather the data of each sensor.
Claims (9)
1. experimental apparatus for dynamic quantitative weighing, comprise structural framing, be installed in the meausring apparatus in the structural framing, pressure transducer (18), it is characterized in that: but described meausring apparatus comprises the solid-state material material feeding box (2) of continuous feed, liquid material material feeding box (3), place solid-state material material feeding box of reception (2) and liquid potpourri batch can (1) of expecting material feeding box (3) material on the pressure transducer (18), and potpourri batch can (1) bottom is provided with bleeder valve (13), bleeder valve (13) is connected to discharge bucket (15), discharge bucket (15) bottom is provided with screen cloth (16), is provided with the mixer (17) that separates with potpourri batch can (1) below the screen cloth (16); Described liquid material material feeding box (3) is supplied water from mixer (17) by last hydroelectric machine (12), and in the liquid material material feeding box (3) liquid level sensor (7) is set; This device also is provided with the connection terminal group; Wherein, the signal of described pressure transducer (18) is connected to the connection terminal group to outside; The lead-in wire of described liquid level sensor (7) is connected to the connection terminal group, and is connected with last hydroelectric machine (12), and the start and stop of hydroelectric machine (12) are gone up in control.
2. experimental apparatus for dynamic quantitative weighing as claimed in claim 1 is characterized in that: described solid-state material material feeding box (2) is the oscillatory type material feeding box, and the control lead-in wire of its drive motor is connected to the connection terminal group.
3. experimental apparatus for dynamic quantitative weighing as claimed in claim 1, it is characterized in that: described solid-state material material feeding box (2) is by helixes feed equipment (4) discharging, this helixes feed equipment is installed in the material feeding box bottom, reach the screw feeder by the driven by motor rotation that is provided with by pipe in pipe and constitute, wherein the control of motor lead-in wire is connected to the connection terminal group.
4. experimental apparatus for dynamic quantitative weighing as claimed in claim 1 is characterized in that: described liquid material material feeding box (3) is by feed liquor valve (14) control discharging.
5. experimental apparatus for dynamic quantitative weighing as claimed in claim 4 is characterized in that: described feed liquor valve (14) is the adjustable electric magnet valve, and its control end is connected to the connection terminal group.
6. as each described experimental apparatus for dynamic quantitative weighing in the claim 1 to 5, it is characterized in that: described potpourri batch can (1) is provided with stirrer (5), this stirrer is installed on the structural framing, with potpourri batch can (1) noncontact, the control of stirrer-driven motor lead-in wire is connected to the connection terminal group.
7. as each described experimental apparatus for dynamic quantitative weighing in the claim 1 to 5, it is characterized in that: be provided with electric heater (9) and temperature sensor (6) in the described potpourri batch can (1), the lead-in wire of electric heater (9) and temperature sensor (6) is connected to the connection terminal group.
8. as each described experimental apparatus for dynamic quantitative weighing in the claim 1 to 5, it is characterized in that: described bleeder valve (13) is a solenoid valve, and its control lead-in wire is connected to the connection terminal group.
9. as each described experimental apparatus for dynamic quantitative weighing in the claim 1 to 5, it is characterized in that: described potpourri batch can (1) is suspended on the supporting surface of structural framing by three " ear " (8) that evenly are provided with on 360 ° of circumference at potpourri batch can (1) waist, and respectively establishes a pressure transducer (18) below three " ear " (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102371664A CN101833885B (en) | 2009-11-13 | 2009-11-13 | Experimental apparatus for dynamic quantitative weighing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102371664A CN101833885B (en) | 2009-11-13 | 2009-11-13 | Experimental apparatus for dynamic quantitative weighing |
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| Publication Number | Publication Date |
|---|---|
| CN101833885A CN101833885A (en) | 2010-09-15 |
| CN101833885B true CN101833885B (en) | 2011-10-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102371664A Expired - Fee Related CN101833885B (en) | 2009-11-13 | 2009-11-13 | Experimental apparatus for dynamic quantitative weighing |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108303294A (en) * | 2017-12-08 | 2018-07-20 | 山东交通学院 | A kind of pitch for laboratory heats Weighting and Controlling instrument and its test method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2618743Y (en) * | 2003-06-05 | 2004-06-02 | 彭春雷 | Automatic charge device linked with programmable control electronic weigher |
| CN101105011A (en) * | 2004-01-17 | 2008-01-16 | 梅秀泉 | Oxygen delignification and bleaching integration paste preparing method and device for realizing the same method |
| CN201337891Y (en) * | 2009-01-13 | 2009-11-04 | 廊坊燕北畜牧机械集团有限公司 | Liquid and dry powder weighing-proportioning stirring tank |
| CN201628570U (en) * | 2009-11-19 | 2010-11-10 | 北京联合大学 | Dynamic weighing device |
-
2009
- 2009-11-13 CN CN2009102371664A patent/CN101833885B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2618743Y (en) * | 2003-06-05 | 2004-06-02 | 彭春雷 | Automatic charge device linked with programmable control electronic weigher |
| CN101105011A (en) * | 2004-01-17 | 2008-01-16 | 梅秀泉 | Oxygen delignification and bleaching integration paste preparing method and device for realizing the same method |
| CN201337891Y (en) * | 2009-01-13 | 2009-11-04 | 廊坊燕北畜牧机械集团有限公司 | Liquid and dry powder weighing-proportioning stirring tank |
| CN201628570U (en) * | 2009-11-19 | 2010-11-10 | 北京联合大学 | Dynamic weighing device |
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| Publication number | Publication date |
|---|---|
| CN101833885A (en) | 2010-09-15 |
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Granted publication date: 20111005 Termination date: 20131113 |