CN102169075A - Paddle rotary testing device of yield stress of sticky materials - Google Patents
Paddle rotary testing device of yield stress of sticky materials Download PDFInfo
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- CN102169075A CN102169075A CN2011100057133A CN201110005713A CN102169075A CN 102169075 A CN102169075 A CN 102169075A CN 2011100057133 A CN2011100057133 A CN 2011100057133A CN 201110005713 A CN201110005713 A CN 201110005713A CN 102169075 A CN102169075 A CN 102169075A
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Abstract
The invention relates to a paddle rotary testing device of yield stress of sticky materials. The device is composed of a direct current brushless motor, a decelerator, a drive circuit of the direct current brushless motor, a coupling, a torque sensor, a single-chip microcomputer measuring circuit, a liquid crystal display screen, a keyboard, a connection cutting sleeve, a rotor and a housing. In the invention, the rotating speed of the rotor can be adjusted, and the yield stress of the material and the change of the rotating speed of the rotor can be monitored in real time. The testing device has a peak value maintaining function, and can record and display the maximum yield stress value. The testing device in the invention, which is mainly applied to the yield stress testing of sticky materials, has the characteristics of compact structure, small volume, and being convenience in operation, stable in performance and high in accuracy.
Description
Technical field
The present invention relates to a kind of material proving installation, particularly relate to a kind of oar blade type viscous and dense material yield stress rotary test device.
Background technology
" high concentration viscous and dense material " refers to that the solid content that produces in the industrial processes is higher, viscosity is bigger, do not have mobile discarded object under normal temperature, normal pressure.The primary slime that comprises coal industry, the dewatered sludge of plumbing industry, the industrial sludge of manufacturing, the dregs of fat of petrochemical industry, greasy filth, industrial solid castoffs such as the red mud of non-ferrous metal industry, also comprise the sugared slag of sugar industry and the non-industrial solid castoffs such as vinasse of wine-making industry, relate to 20 surplus an industry.The solid content maximal value of existing solid-liquid separation process, as coal slime be 75%, waste sludge from paper mill is 40%, the city dehydrated sludge is 20% etc.
The sticky trade waste accumulation form of high concentration is extremely unstable, meets water and promptly runs off, and air-dryly promptly flies upward, and is very big to environmental hazard.Be to adopt pipeline transportation to the best transportation way of viscous and dense material at present, pipeline transportation have capital expenditure low, landform adaptability by force, is not accounted for or accounts for less soil, free from environmental pollution and automaticity is high, can work continuously, be subjected to advantages such as external interference is little, freight charges are cheap, the pipeline transportation that especially can form with the sticky trade waste of high concentration is a core, with integrated integrated conveying and disposal systems of link such as discarded object pre-service, conveying, disposal.
The yield stress of viscous and dense material is to influence the suction characteristic of material agitation characteristics, pumping system and the key factor of material flow characteristics in pipeline.Traditional testing tool needs to draw the shearing curve with viscosimeter, is extrapolated to shear rate again and is on zero the coordinate, obtains yield stress indirectly, and time test period is long.
Notification number is CN22868Y, Granted publication day is the utility model patent " viscosity meter " on July 29th, 1998, the design of this patent case has proposed a kind of viscosity meter that is used for industrial production lines such as medical gelatin, resin, paint, it obtains the viscosity of tested material by adopting the moment of torsion of torque sensor testing rotor.Though this patent can be on zero the coordinate by drawing the shearing curve, being extrapolated to shear rate again, obtains the measured object yield stress indirectly, and because the special physicochemical property of viscous and dense material, this instrument can not satisfy the test request of viscous and dense material.
In view of the defective of above invention,, shorten test period in order to realize the test of viscous and dense material yield stress, and assurance test accuracy, the inventor studies, designs through continuous, and after studying sample and improvement repeatedly, develops the present invention with practical value finally.
Summary of the invention
Fundamental purpose of the present invention is, at existing problem, a kind of viscous and dense material yield value of stress proving installation is proposed, finish the measurement of viscous and dense material yield stress, abandoning tradition needs to draw the shearing curve by viscosimeter, be extrapolated to shear rate again and be on zero the coordinate axis, obtain the method for testing of yield stress indirectly, time test period is long.
Fundamental purpose of the present invention also is, a kind of oar blade type viscous and dense material yield stress rotary test device is provided, this device is easy to operate, stable testing, precision height, volume are little, it is hand-held to be convenient to and rotor change convenient, can directly apply to engineering site, instruct actual production, for the design and the improvement of viscous and dense material pipe-line transportation system provides foundation.
The object of the invention to solve the technical problems realizes by the following technical solutions.A kind of oar blade type viscous and dense material yield stress rotary test device according to the present invention proposes comprises driven unit, test suite, connection cutting ferrule, rotor, housing.Wherein, driven unit, test suite all are installed in the housing, motor is installed on the motor fixing plate, torque sensor is fixed on the housing base plate, motor is connected with the input shaft of torque sensor by solid coupling, connect cutting ferrule and be fixed on the output shaft of torque sensor, be used to connect rotor.Driven unit provides rotary power for the rotor of proving installation, test suite is finished the demonstration on LCDs of the yield value of stress of the detection of torque sensor voltage signal, processing and material, rotor speed, and keyboard is used to set sense cycle value, high-low limit value, realization peak value and the switching between the detected value in real time of single chip computer measurement circuit.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid a kind of oar blade type viscous and dense material yield stress rotary test device, wherein said driven unit is made up of dc brushless motor, driven by Brush-Less DC motor circuit, speed reduction unit and shaft coupling.Speed reduction unit is a planetary reducer, directly link to each other with the output shaft of dc brushless motor, constitute cylindrical integral, utilize screw vertically to be installed on the motor fixing plate, be encapsulated in the cylindrical electrical machine outer sleeve, be in the top of proving installation, speed reduction unit is drawn driving shaft and is linked to each other with the input shaft of torque sensor by shaft coupling, the driven by Brush-Less DC motor circuit package is screwed in the inboard of housing wallboard in can, reduces the influence of external environment to motor-drive circuit.The driven by Brush-Less DC motor circuit is made up of AC-DC module, direct supply inverting module, electric machine speed regulation module, but the AC-DC module is converted to alternating current in the direct current of power supply machine work, the direct supply inverting module, realize the rotating of motor, utilize the electric machine speed regulation module to adopt the mode of constant-power speed regulation, regulate rotating speed of motor.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid a kind of oar blade type viscous and dense material yield stress rotary test device, wherein said test suite is made up of torque sensor, single chip computer measurement circuit.Torque sensor is contactless dynamic torque torque sensor, vertically place, be fixed on the base plate by double-screw bolt and nut, its input shaft is connected with the output shaft of speed reduction unit by solid coupling, output shaft is connected with rotor by connecting cutting ferrule, the single chip computer measurement circuit is placed in the housing, is screwed on the inside panel of housing.Rotary encoder is installed in the torque sensor is measured rotation speed change simultaneously.The single chip computer measurement circuit comprises A/D module, Signal Spacing module, AC-DC module, RS232 interface, single-chip microcomputer, watchdog chip, hummer, LCDs and keyboard, on the housing wallboard, slot, LCDs and keyboard are fixed on the outside at the housing wallboard; By the A/D module, the voltage signal of torque sensor is converted to digital signal, after single-chip microcomputer calculates, display result on liquid crystal display; The AC-DC module is converted to alternating current can supply the single chip computer measurement circuit voltage, is the power supply of moment of torsion torque sensor simultaneously; The Signal Spacing module makes input signal have certain anti-interference capability; Adopt the mode of timing pip counting uniformly-spaced regularly to detect synchro measure moment of torsion and change in rotational speed situation; Watchdog chip has realized that the power supply detection resets, and effectively avoids the deadlock phenomenon that power supply disturbs, fluctuation causes; Have peak-value-holding function, note measured maximum yield value of stress; The RS-232 interface of employing standard and upper machine communication; Can set measured high-low limit value by keyboard, the measured value value of overstepping the extreme limit back hummer can blow a whistle warnings, motor outage, the reset key of press lower keyboard, the motor acquisition is powered, and remeasures, and sensitive element is effectively protected.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid a kind of oar blade type viscous and dense material yield stress rotary test device, wherein said connection cutting ferrule is made up of axle sleeve, screw, steel ball, back-up ring, overcoat, be fixed in by axle sleeve, screw and back-up ring on the output shaft of torque sensor, be used to connect the output shaft and the armature spindle of torque sensor, by overcoat gravity and steel ball rotor is fixed, tightened, when proving installation is vertically placed, upwards push away overcoat, rotor can rely on self gravitation to fall, and has made things convenient for the replacing of rotor.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid a kind of oar blade type viscous and dense material yield stress rotary test device, wherein said rotor is the executive component of proving installation, rotor adopts the version of cross blade, stressing conditions to rotor under specific operation carries out analytical calculation, choose two metallic sheet materials, utilize the connection cutting ferrule to link to each other with the torque sensor output shaft with certain intensity and surfaceness.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid a kind of oar blade type viscous and dense material yield stress rotary test device, wherein said housing is made up of motor sleeve, housing top board, housing wallboard, housing base plate and motor fixing plate, the motor outer sleeve utilizes bolt, nut to be fixed on the motor top board, utilize screw to be connected between housing top board, housing base plate and the housing wallboard, constitute a housing of stopping writing, it is encapsulated in its inside with driven unit, test suite.In assembling process, at first utilize double-screw bolt and nut that torque sensor is fixed on the base plate, utilize overall fixed that screw forms motor and speed reduction unit then on motor fixing plate, pass through setting nut, position that can the fine tune motor reduces the influence that the proving installation test result is produced because of disalignment between motor shaft and the torque-transmitter shaft.
A kind of oar blade type viscous and dense material of the present invention yield stress rotary test device compared with prior art has following advantage and beneficial effect:
(1) compact conformation of the present invention, volume are little, can the handheld electrical machinery outer sleeve, and be applied to engineering site material is measured, instruct actual production;
(2) the present invention can directly show the yield value of stress of viscous and dense material, has abandoned traditional shearing curve of need drawing, and is extrapolated to shear rate again and is on zero the coordinate, obtains the method for testing of yield stress indirectly, has shortened measuring period;
(3) measuring accuracy height of the present invention, good reproducibility, and easy and simple to handle.
In sum, viscous and dense material yield stress proving installation of the present invention, purpose is to propose a kind of new viscous and dense material yield stress method of testing, solve long disadvantage of traditional measurement cycle, for the design and the improvement of viscous and dense material pipe-line transportation system provides foundation, and this device volume is little, and hand-holdable measurement is convenient to the production scene and is used.
Description of drawings
Fig. 1 is a structural drawing of the present invention
Fig. 2 is a connection cutting ferrule synoptic diagram of the present invention
Fig. 3 is a rotor synoptic diagram of the present invention
Fig. 4 is single chip computer measurement circuit theory diagrams of the present invention
Among the figure:
1: motor outer sleeve 2: the housing top board
3: housing outer wall 4: the single chip computer measurement circuit
5: torque sensor 6: the housing base plate
7: torque sensor output shaft 8: connect cutting ferrule
9: rotor 10: nut
11: double-screw bolt 12: the driven by Brush-Less DC motor circuit
13: torque sensor input shaft 14: reducer output shaft
15: shaft coupling 16: motor fixing plate
17: screw 18: speed reduction unit
19: dc brushless motor 20: the torque sensor output shaft
21: axle sleeve 22: armature spindle
23: steel ball 24: screw
25: back-up ring 26: overcoat
27: wing plate 28: the basil
29: torque sensor output voltage signal 30: the Signal Spacing module
31:A/D module 32: single-chip microcomputer
33: keyboard 34: LCDs
35: hummer 36: watchdog chip
37:RS232 interface 38: host computer
39: AC-DC module 40: AC power
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention,
Below in conjunction with accompanying drawing and preferred embodiment, embodiment, structure, feature and the effect thereof of a kind of oar blade type viscous and dense material yield stress rotary test device that foundation the present invention is proposed, describe in detail as after.
Relevant aforementioned and other technology contents, characteristics and effect of the present invention can be known to present in the following detailed description that cooperates with reference to graphic preferred embodiment.By the explanation of embodiment, when can being to reach technological means and the effect that predetermined purpose takes to be able to more deeply and concrete understanding to the present invention, yet institute's accompanying drawing only provide with reference to the usefulness of explanation, be not to be used for the present invention is limited.
The structural drawing of a kind of oar blade type viscous and dense material of the present invention as shown in Figure 1 yield stress rotary test device is made up of driven unit, test suite, connection cutting ferrule, rotor, housing.Planetary reducer 18 directly links to each other with the output shaft of dc brushless motor 19, constitute cylindrical integral, utilize screw 17 vertically to be installed on the motor fixing plate 16, be encapsulated in the cylindrical electrical machine outer sleeve 1, be in the top of proving installation, motor outer sleeve 1 utilizes bolt, nut is fixed on the housing top board 2, housing top board 2, be connected and fixed with screw between housing base plate 6 and the housing wallboard 3, torque sensor 5 is vertically placed, be fixed on by double-screw bolt 11 and nut 10 on the base plate 6 of housing, its input shaft 13 utilizes solid coupling 15 to be connected with the output shaft 14 of speed reduction unit, its output shaft 7 is connected with rotor 9 by connecting cutting ferrule 8, regulate the nut 10 of fixed electrical machinery fixed head 16, guarantee direct current generator, the right alignment of integral body that speed reduction unit constituted and torque sensor 5 is less than φ 0.05mm.Driven by Brush-Less DC motor circuit 12 is encapsulated in the can and utilizes the inboard of screw retention at housing wallboard 3 in the lump with single chip computer measurement circuit 4, on housing wallboard 3, slot, LCDs, keyboard, electric power switch, forward-reverse switch and electric machine speed regulation knob all are embedded in the outside of housing wallboard 3.Except that housing base plate 6 and motor fixing plate 16, all adopt the alloy processing and manufacturing, under the situation that proof strength requires, reduced the quality of whole device.
The connection cutting ferrule synoptic diagram of a kind of oar blade type viscous and dense material of the present invention as shown in Figure 2 yield stress rotary test device, form by axle sleeve 21, steel ball 23, screw 24, back-up ring 25, overcoat 26, be fixed on by screw 24, back-up ring 25 on the output shaft 20 of torque sensor, matching relationship by overcoat 26 gravity, steel ball 23, axle sleeve 21 and armature spindle 22 tops is fixed rotor 9, tighten, when proving installation is vertically placed, upwards push away overcoat, rotor 9 can rely on self gravitation to fall, its distinctive design form is convenient to the replacing of rotor 9.
The rotor synoptic diagram of a kind of oar blade type viscous and dense material of the present invention as shown in Figure 3 yield stress rotary test device, adopt the version of cross blade, wing plate 27 numbers are 4, make by two high-strength metal material, hardness should be greater than HRC40, surfaceness is less than Ra6.3 μ m, the depth-width ratio of rotor is 2, in the end design basil 28, reduced in inserting the process of material destructiveness to it, be to enlarge the test specification of proving installation yield stress, designed the rotor of 4 kinds of different sizes, the yield stress test specification of different rotor has between 10% repetition areal coverage.
The single chip computer measurement circuit theory diagrams of a kind of oar blade type viscous and dense material of the present invention as shown in Figure 4 yield stress rotary test device are made up of Signal Spacing module 30, A/D module 31, single-chip microcomputer 32, keyboard 33, LCDs 34, hummer 35, watchdog chip 36, RS232 interface 37, AC-DC module 39.By A/D module 31, the voltage signal 29 that torque sensor is exported is converted to digital signal; Signal Spacing module 30 makes input signal have certain anti-interference capability; AC-DC module 39 is converted to the direct current that can supply single chip computer measurement circuit 4 to work with the AC power 40 of outside; Adopt the mode of timing pip counting uniformly-spaced regularly to detect, synchro measure moment of torsion and change in rotational speed situation after handle single-chip microcomputer 32 inside, are noted measured maximum yield value of stress, show reading on LCDs 34; Watchdog chip 36 has realized that the power supply detection resets, and effectively avoids the deadlock phenomenon that power supply disturbs, fluctuation causes; The RS-232 interface 37 and the host computer 38 of employing standard carry out communication; Set measured high-low limit value by keyboard 33, the measured value value of overstepping the extreme limit back hummer 35 can blow a whistle warnings, motor outage, the reset key of pressing lower keyboard, the motor acquisition is powered, and remeasures then.
A kind of oar blade type viscous and dense material yield stress rotary test device of the present invention, its theoretical foundation and mathematic(al) representation are as described below:
Wherein: M---the suffered moment of torsion of rotor (NM); The shearing strength of τ---cylinder (pa); D---four-bladed vane diameter (m); D
1---four-bladed vane shaft diameter (m); The height of H---four-bladed vane (m).
A kind of operation steps of oar blade type viscous and dense material yield stress rotary test device is:
(1) the rotor sense of rotation is set, connects the power supply of proving installation;
(2) open the motor power switch, regulate the electric machine speed regulation knob and set motor speed, disable motor power switch;
(3) rotor is inserted the tested material set depth, open the motor power switch, LCDs shows the yield value of stress that rotor speed value and torque sensor record;
(4) behind the read test result, disconnect the proving installation power supply, the arrangement testing tool.
Be basic design of the present invention as mentioned above.But, in technical field of the present invention,, can improve other exercisable embodiment of the present invention as long as possess the most basic knowledge.In the present invention substantive technical scheme has been proposed the patent protection request, its protection domain should comprise all variation patterns with above-mentioned technical characterstic.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (6)
1. oar blade type viscous and dense material yield stress rotary test device, include driven unit, test suite, connect cutting ferrule, housing, rotor, wherein driven unit comprises dc brushless motor (19), driven by Brush-Less DC motor circuit (12), speed reduction unit (18) and shaft coupling (15), test suite comprises single chip computer measurement circuit (4), torque sensor (5), keyboard (33) and LCDs (34), housing comprises motor sleeve (1), housing top board (2), housing outer wall (3), housing base plate (6) and motor fixing plate (16), wherein, driven unit and test suite are installed in the housing, driven unit is that the rotor (9) of proving installation provides rotary power, test suite has the power supply detection and resets and peak-value-holding function, keyboard (33) can be set the sense cycle of single chip computer measurement circuit (4), the high-low limit value, realize peak value and the switching between the detected value in real time, LCDs (34) shows yield stress and rotating speed, and rotor (9) will be imbedded the tested material set depth before measurement.
2. a kind of oar blade type viscous and dense material yield stress rotary test device according to claim 1, it is characterized in that wherein said driven unit, adopt speed reduction unit (18) to be connected the back with dc brushless motor (19) and constitute a right cylinder, be encapsulated in the cylindrical electrical machine outer sleeve of being convenient to hand (1), motor-drive circuit comprises AC-DC module, direct supply change-over key and electric machine speed regulation module.
3. a kind of oar blade type viscous and dense material yield stress rotary test device according to claim 1, it is characterized in that wherein said test suite, rotary encoder is installed in the torque sensor (5) is measured rotating speed, the single chip computer measurement circuit comprises Signal Spacing module (30), Signal Spacing module (30), A/D module (31), single-chip microcomputer (32), keyboard (33), LCDs (34), hummer (35), watchdog chip (36), RS232 interface (37), AC-DC module (39).
4. a kind of oar blade type viscous and dense material yield stress rotary test device according to claim 1, it is characterized in that wherein said connection cutting ferrule (8), utilize overcoat (26) gravity and steel ball (23) that rotor (9) is fixed, tightened, when proving installation is vertically placed, upwards push away overcoat (26), rotor (9) relies on self gravitation to fall, and is convenient to the replacing of rotor (9).
5. a kind of oar blade type viscous and dense material yield stress rotary test device according to claim 1 is characterized in that wherein said rotor (9), adopts the version of cross blade, and in its end design basil.
6. a kind of oar blade type viscous and dense material yield stress rotary test device according to claim 1, it is characterized in that wherein said housing, driven unit and test suite all are encapsulated in its inside, wherein change the position of motor fixing plate (16) by setting nut (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110005713A CN102169075B (en) | 2011-01-07 | 2011-01-07 | Paddle rotary testing device of yield stress of sticky materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110005713A CN102169075B (en) | 2011-01-07 | 2011-01-07 | Paddle rotary testing device of yield stress of sticky materials |
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| Publication Number | Publication Date |
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| CN102169075A true CN102169075A (en) | 2011-08-31 |
| CN102169075B CN102169075B (en) | 2012-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110005713A Expired - Fee Related CN102169075B (en) | 2011-01-07 | 2011-01-07 | Paddle rotary testing device of yield stress of sticky materials |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980836A (en) * | 2012-12-25 | 2013-03-20 | 徐良 | Rotation-type on-line viscometer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2191428Y (en) * | 1994-02-08 | 1995-03-08 | 山东淄川电子工业设备厂 | Torque sensor for measuring viscosity |
| US5503003A (en) * | 1994-12-14 | 1996-04-02 | Brookfield Engineering Laboratories, Inc. | Portable viscometer |
| CN201237569Y (en) * | 2008-07-10 | 2009-05-13 | 中铁第五勘察设计院集团有限公司 | Fast tester for emulsified asphalt cement mortar fluidity |
| CN101655438A (en) * | 2008-08-19 | 2010-02-24 | 上海尼润智能科技有限公司 | Instrument for measuring rheological property and viscosity of fluid |
| CN202281736U (en) * | 2011-10-10 | 2012-06-20 | 中国矿业大学(北京) | Paddle type sticky material yield stress rotary testing device |
-
2011
- 2011-01-07 CN CN201110005713A patent/CN102169075B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2191428Y (en) * | 1994-02-08 | 1995-03-08 | 山东淄川电子工业设备厂 | Torque sensor for measuring viscosity |
| US5503003A (en) * | 1994-12-14 | 1996-04-02 | Brookfield Engineering Laboratories, Inc. | Portable viscometer |
| CN201237569Y (en) * | 2008-07-10 | 2009-05-13 | 中铁第五勘察设计院集团有限公司 | Fast tester for emulsified asphalt cement mortar fluidity |
| CN101655438A (en) * | 2008-08-19 | 2010-02-24 | 上海尼润智能科技有限公司 | Instrument for measuring rheological property and viscosity of fluid |
| CN202281736U (en) * | 2011-10-10 | 2012-06-20 | 中国矿业大学(北京) | Paddle type sticky material yield stress rotary testing device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980836A (en) * | 2012-12-25 | 2013-03-20 | 徐良 | Rotation-type on-line viscometer |
| CN102980836B (en) * | 2012-12-25 | 2015-05-13 | 徐良 | Rotation-type on-line viscometer |
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| CN102169075B (en) | 2012-10-24 |
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Granted publication date: 20121024 Termination date: 20140107 |