CN2514339Y

CN2514339Y - Multifunctional flow measurer

Info

Publication number: CN2514339Y
Application number: CN 01269888
Authority: CN
Inventors: 李浪
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-12-30
Filing date: 2001-12-30
Publication date: 2002-10-02
Anticipated expiration: 2011-12-30

Abstract

The utility model discloses a multifunctional rheometer which comprises a rheometer assembly. The multifunctional rheometer is characterized in that an electronic torsion sensor is arranged on the drive mechanism of the rheometer assembly and a measuring probe arranged on the electronic torsion sensor. The utility model has the advantages of simple structure, being convenient to use and high measuring accuracy, etc. The deviation of the dual test result is less than or equal to plus or minus 0.5 percent, which has a big decreasing comparing to the present technology; the measuring probe has several types of stirring heads, such as long rod shape, spiral leaf shape, conical shape and needle shape, etc. which suit for different works and different measuring ranges; a single chip microcomputer is used to control a program temperature device on a temperature controlling heater, not only can measure in stable temperature, but also can measure the temperature controlled by program, which suit for the rheological measuring of various materials and realize a multiple use in one machine. Compared with the other present rheological measuring devices, the utility model has the advantages of higher measuring accuracy, stronger generality and lower price.

Description

Multi-functional flow graph

Affiliated technical field

The utility model relates to a kind of fluid measurement instrument, specifically relates to a kind of multi-functional flow graph.

Background technology

At present, the rotary viscosimeter instrument of domestic production is flow graph under the follow-on test situation of alternating temperature, this rotary viscosimeter instrument partly is made up of rotor, measuring spring or hairspring, last optical disc, following optical disc, photovalve and microprocessor, synchronous motor and speed-changing gear box etc.The viscosity resistance that rotor is subjected in fluid to be measured makes measuring spring or hairspring produce moment of torsion, thereby makes optical disc and following optical disc produce the drift angle, will produce the drift angle by photovalve and microprocessor and convert viscosity number to.This photoelectric sensor system degree of accuracy is lower, and its measuring error is ± 5%, and only is adapted at standard frequency and voltage use down, otherwise can make measuring accuracy lower.At present, the rotary flow graph of domestic production has only the hemorheology instrument, and its principle and structure are similar to above-mentioned rotary viscosimeter instrument, just has than big-difference on the profile of microprocessor and instrument.From the Viscograph type viscosity apparatus of external import is the instrumentation of the assay determination wheat flour of generally acknowledging in the world, ground rice, various starch qualities, Viscograph type viscosity apparatus is the ftheoloqical measurements instrument when continuous coverage, it is made up of dynamometry disc spring, sensing vertical pivot, sensor (stirrer), measurement alms bowl, radiation furnace, chilled water unit, drive motor, rotating speed device, timer, contact temperature meter, temperature adjustment and robot control system(RCS), cooling robot control system(RCS), mechanical pen recorder, etc.It is with mechanical lever power sensor-based systems such as dynamometry disc springs, two test findings deviations are≤and ± 10%.Seemed backward from current development of electronic technology, its measuring accuracy is poor, needs skilled operator just can obtain measurement result preferably.

Summary of the invention

It is a kind of simple in structure that the purpose of this utility model just is to provide, and measures more accurately, uses multi-functional more easily flow graph.

The purpose of this utility model can realize by following measure:

The utility model comprises the flow graph assembly, and the driving mechanism in the flow graph assembly is provided with the electronic torque sensor, and the electronic torque sensor is provided with measuring head.

Electronic torque sensor in the utility model is resistance-strain type torque sensor or magneto-electric torque sensor.Also can adopt the sensor of other types; It is first-class that measuring head is that clavate measuring head, spiral leaf measuring head, taper measuring head, aciculiform are measured, and difform measuring head should use corresponding measuring cup.Driving mechanism should adopt DC servo motor, synchromesh gear reducing motor, use the asynchronous motor of Frequency Converter Control or the stepper motor of change differential driving interface circuit control etc.Temperature control well heater in the flow graph assembly is the temperature programmed control device, also can adopt radiator valve etc.

The utility model makes to the utlity model has simple in structure, easy to use, measuring accuracy advantages of higher owing to structures such as employing electronic torque sensors; Two test findings deviations are≤± 0.5%, greatly reduce than the prior art deviation; It is first-class multiple that measuring head has clavate stirring-head, spiral leaf stirring-head, taper stirring-head, aciculiform to stir, applicable to different industries, and different range abilities; By single chip microcomputer the temperature control well heater is carried out program temperature device control, both can constant temperature measurement, also can measure by temperature programmed control, be applicable to the rheological test of various materials, can realize a tractor serves several purposes.Compare with existing flow graph, the present embodiment measuring accuracy is higher, and versatility is stronger, and price is lower.

Description of drawings

Fig. 1 is a synoptic diagram of the present utility model

Fig. 2 is the synoptic diagram of measuring head in the utility model

Fig. 3 is a synoptic diagram of measuring alms bowl in the utility model

Fig. 4 is the synoptic diagram of multiple clavate measuring head in the utility model

Fig. 5 is the synoptic diagram of the measuring cup of clavate measuring head correspondence in the utility model

Fig. 6 is the synoptic diagram of taper measuring head in the utility model

Fig. 7 is the synoptic diagram of the measuring cup of taper measuring head correspondence in the utility model

Embodiment

As shown in the figure: the utility model comprises flow graph assembly 18, and the driving mechanism in the flow graph assembly 18 is provided with electronic torque sensor 4, and electronic torque sensor 4 is provided with measuring head 7.Electronic torque sensor 4 is resistance-strain type torque sensor or magneto-electric torque sensor.Measuring head 7 is clavate measuring head or spiral leaf measuring head, taper measuring head 16, aciculiform measuring head 14 etc.Driving mechanism is DC servo motor or synchromesh gear reducing motor.The temperature control well heater is the temperature programmed control device.

Principle of work of the present utility model is as follows: as shown in the figure, motor 1 links to each other with Z-axis speed reduction unit 2, be connected by shaft coupling 5 between torque sensor 4 and the Z-axis speed reduction unit 2, the purpose that torque sensor 4 times increases intermediate supports 6 is in order to guarantee that sensor does not bear axial tension or moment of flexure because of the weight of bearing shaft coupling 5 and measuring head 7 makes sensor axis, thus the assurance measuring accuracy.Rotating shaft in the intermediate supports 6 and measuring head 7 link.Measuring alms bowl 8 places among the temperature control well heater 9.Motor 1 can be stepper motor, the DC servo motor of controlling by variable differential driving interface circuit with single-chip microcomputer (or other microcomputer), or with the asynchronous motor of Frequency Converter Control, or directly use the synchromesh gear reducing motor.Torque sensor 4 is resistance-strain type torque sensor or magneto-electric torque sensor.The rotating speed of motor 1 is regulated control by single-chip microcomputer 12 by keyboard 3 input digits, also can be controlled with the microcomputor program gradual change by computer interface 13 by other microcomputer.Motor 1 and torque sensor 4 are by 10 power supplies of high stability power supply circuit.Change measuring head 7 for convenience and measure alms bowl 8 and also be provided with lifting column 11 and lifting handle.When measuring head 7 stirs material with different rotation rates in measuring alms bowl 8, tested material with shear transfer to torque sensor 4, thereby measure the torque value that acts under the different rotating speeds on the measuring head, be converted into rheological parameter according to rotating speed and measuring head physical dimension.When measuring head 7 and when measuring between the alms bowl 8 no material, can import [0] by keyboard 3 and regulate zero point automatically.Measuring head 7 is subjected to the effect of slurries and the moment of torsion that produces in measuring alms bowl 8, pass to torque sensor 4 through shaft coupling 5, torque sensor 4 produces the moment of torsion electric signal, and measured signal is sent into computer recording and storage by the microcomputer data acquisition card, by computer software torque is converted into corresponding rheological parameter again.At test period, the automatic track record rheological curve of computing machine parameter will indicate rheological curve and the analysis result of estimating point at last and print, and simultaneously test result will be stored in floppy disk or the hard disk.Fig. 2 and Fig. 3 are the measuring head 7 and the structural representation of measuring alms bowl 8 of the utility model when being used for the used flow graph of cereal processing industry, starch industry.When measuring head 7 is special large knitting needle formula form when (as shown in Figure 2) with measuring alms bowl 8, promptly constitute cereal processing industry, the used flow graph of starch industry.At this moment have: 34.32 ± 0.69mN m=1 viscosity unit (VU, former represent) with BU; Both available computers keyboard choice criteria programed temperatures also can be by the digital soft-touch control of computer keyboard or heating controller, preliminary election heating, insulation, cooling, initial temperature, terminal temperature and temperature retention time.During viscosity test, the automatic track record viscograph of computing machine parameter will indicate viscograph and the analysis result of estimating point at last and print, and test result will be stored in floppy disk or the hard disk with standby simultaneously.Can select different evaluation methods by keyboard operation, or compare with the standard flour viscograph.Estimate the initial gelatinization point of wheat flour, ground rice, starch, high viscosity, MV minium viscosity, final viscosity, the damaged value of viscosity, denseness, return old value, gelatinization time by CNS and ICC standard.Thereby estimate quality according to these eigenwerts.Such as, 1. judge the vigor of the AMS of wheat according to wheat flour viscosity characteristics curve, the wheat flour of different alpha-amylase activities, the high viscosity of its viscosity characteristics curve is different, thereby can analyze alpha-amylase activity, thereby replace present drop value analyzer according to high viscosity.2. judge the storage period and the cooking quality of rice according to the viscosity characteristics curve of rice meal, along with the rice prolongation of storage period, its final viscosity reaches back old value and enlarges markedly; Initial gelatinization point and denseness are low, and the damaged value of viscosity is little, and the cooking quality of rice is good, and return the variation when can be used to measure rice and cooling off of old value and denseness, the degree of promptly bringing back to life.3. judge its purposes according to starch and converted starch viscosity characteristics curve.4. simultaneously also can be by the requirement of different quality, operating personnel's definable principal curve, and stipulate the ultimate value of each analysis indexes, come the evaluation test result.Fig. 4 and Fig. 5 are the measuring head 14 of the utility model when being used for the used universal flow graph of industries such as grease, paint, plastics, food, medicine, tackifier, cosmetics and the structural representation of measuring cup 15.When measuring head 14 is general large knitting needle formula form (as shown in Figure 4) when being rotor, promptly constitute universal flow graph.Can be used for industries such as grease, paint, plastics, food, medicine, tackifier, cosmetics.This kind flow graph can be measured the liquid viscosity of quite wide scope, when measuring low-viscosity (mobile) liquid, uses the rotor of large volume and high-speed combination, on the contrary, when measuring high viscosity liquid, uses the combination of tiny rotor and low velocity.Also available same rotor is at the viscosity variation characteristic of different tachometry liquid, the i.e. rheological properties of fluid.Both available computers keyboard choice criteria programed temperatures also can be by the digital soft-touch control of computer keyboard or heating controller, preliminary election heating, insulation, cooling, initial temperature, terminal temperature and temperature retention time.During viscosity test, the automatic track record viscograph of computing machine parameter will indicate viscograph and the analysis result of estimating point at last and print, and test result will be stored in floppy disk or the hard disk with standby simultaneously.Compare with existing flow graph, the present embodiment measuring accuracy is higher, and versatility is stronger, and price has only 1/3rd of import instrument.Fig. 6 and Fig. 7 are the measuring head 16 of the utility model when being used for the used cone-plate type flow graph in medical science aspect and the structural representation of measuring cup 17.When measuring head 7 is a back taper formula form (as shown in Figure 6), when measuring cup 17 is dull and stereotyped, promptly constitute cone-plate type flow graph.Can be used for blood viscosity and measure, also can be used for the consolidation of block butter, margarine, cheese and the denseness of extensibility and cheese and measure.Change cone-plate into the gel test tank, the gel strength that also can be used for colloid is measured.

Claims

1, a kind of multi-functional flow graph, it comprises flow graph assembly (18), it is characterized in that: the driving mechanism in the flow graph assembly (18) is provided with electronic torque sensor (4), and electronic torque sensor (4) is provided with measuring head (7).

2, multi-functional flow graph according to claim 1 is characterized in that: described electronic torque sensor (4) is the resistance-strain type torque sensor.

3, multi-functional flow graph according to claim 1 is characterized in that: described electronic torque sensor (4) is the magneto-electric torque sensor.

4, multi-functional flow graph according to claim 1 is characterized in that: described measuring head (7) is the clavate measuring head.

5, multi-functional flow graph according to claim 1 is characterized in that: described measuring head (7) is a spiral leaf measuring head.

6, multi-functional flow graph according to claim 1 is characterized in that: described measuring head (7) is a taper measuring head (16).

7, multi-functional flow graph according to claim 1 is characterized in that: described measuring head (7) is an aciculiform measuring head (14).

8, multi-functional flow graph according to claim 1 is characterized in that: described driving mechanism is a DC servo motor.

9, multi-functional flow graph according to claim 1 is characterized in that: described driving mechanism is the synchromesh gear reducing motor.

10, multi-functional flow graph according to claim 1 is characterized in that: the temperature control well heater is the temperature programmed control device in the described flow graph assembly (18).