CN110286061A - A kind of coefficient of viscosity measuring device and working method - Google Patents
A kind of coefficient of viscosity measuring device and working method Download PDFInfo
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- CN110286061A CN110286061A CN201910575495.3A CN201910575495A CN110286061A CN 110286061 A CN110286061 A CN 110286061A CN 201910575495 A CN201910575495 A CN 201910575495A CN 110286061 A CN110286061 A CN 110286061A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
- G01N11/10—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material
- G01N11/12—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material by measuring rising or falling speed of the body; by measuring penetration of wedged gauges
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Abstract
The present invention relates to a kind of coefficient of viscosity measuring device and working methods, device is contained including liquid, the liquid contains and is provided with crossbeam above device, collimation mechanism is fixed on the crossbeam, the collimation mechanism is located at liquid and contains right above device, it is fallen along the vertical direction for regulation experiment with bead, the collimation mechanism side is equipped with bracket, electromagnet is connected with by regulating mechanism on the bracket, the position of electromagnet horizontal direction and vertical direction is adjusted in the regulating mechanism, electromagnet is used for adsorption experiment bead, the side that the liquid contains device is equipped with recording apparatus bracket, the recording apparatus bracket is equipped with elevating mechanism, the elevating mechanism is connect with recording apparatus, the recording apparatus is for recording a video to bead dropping process, measuring device of the invention is easy to use, measurement efficiency is high, measurement As a result accurate.
Description
Technical field
The present invention relates to experimental tool technical fields, and in particular to a kind of coefficient of viscosity measuring device and measurement side
Method.
Background technique
Coefficient of viscosity reacts when an object passes through fluid the case where by resistance, and the coefficient of viscosity is big, moving object
The resistance being subject to is big.The coefficient of viscosity is one of description most important parameter of fluid properties, is an important ginseng in hydrodynamics
Number has great practical significance to the measurement of the coefficient of viscosity in industrial production and scientific research.In many engineer applications
In, the engine that fluid is lubricated as hydraulic system and hydraulic power, selection, the hydraulic drive of lubricating oil used in all kinds of machinery
And the research to the real fluid characteristics of motion, require the coefficient of viscosity of measurement liquid.Medically, to the blood coefficient of viscosity
Measurement, valuable diagnosis data can be obtained.It therefore, is necessary to the research of method for determining liquid viscosity coefficient.
Currently, the common method of the measurement coefficient of viscosity has: rotary process, capillary tube method and falling ball method etc..Falling ball method is because of operation
It is simply generally used, this method is generally used to the measurement biggish liquid of viscosity, and liquid is required to have certain transparency.
Falling ball method only need to directly measure the time from 7-8cm downwardly over to Down-Up 7-8cm with stopwatch when measuring, while use vernier
Slide calliper rule, micrometer caliper, meter ruler measure graduated cylinder internal diameter, the small ball's diameter, liquid height respectively, are calculated according to coefficient of viscosity public
Formula can obtain the coefficient of viscosity of liquid.It is obvious that inventor has found that traditional falling ball method has the shortcomings that, is carrying out precision to general liquid
Encounter problems when measurement: as using stopwatch manual time keeping, there are errors for measurement, so that precision not can guarantee, it is more difficult to judge bead
Whether uniform motion is made, has reduced the reliability of measured value, when needing lot of experimental data, it is quick, accurate to accomplish
Measurement, it is difficult to guarantee that bead falls vertically along center line, be not capable of measuring the coefficient of viscosity etc. of opaque liquid.
Inventors have found that when the measurement coefficient of viscosity using falling ball method domestic at present, there is more drawbacks, such as hand
The distance that at random, by rule of thumb, manually manual time-keeping error is larger by bead releasing position, determines that terminal velocity is chosen only has two
Section, the position parallax that clocks are big etc..Domestic scholars constantly improve traditional coefficient of viscosity experiment, such as use by new technology
Photoelectric door and digital millisecond counter replace artificial manual time-keeping, and artificial stopwatch bring parallax and response error is effectively reduced；Holding
The lid for installing carry magnet pull rod in center at the top of device additional is controlled by magnetic force and guarantees that bead falls along the axis of container, reduced small
The measurement error of ball fall time.Test result shows that measurement accuracy can be effectively improved using improved laboratory apparatus, subtracts
Few experimental error, improves the utilization rate of instrument and equipment, reduces experimental cost, but bead starts the position to move with uniform velocity and determines still
In the presence of very big error, the use of photoelectric door can not fall again because of reflection liquid and refraction and bead dropping process along center line
Etc. reasons triggering probability it is low.
Foreign scholar is recorded a video using mobile phone at this stage, the video acquisition data to be fallen by record ball, on smart phone,
Got off with the speed record of 30 frame per second or 60 frame per second (have switched record one higher frame rate of option).With at a slow speed
Analyzing video motion video editor tracker record, when bead starts to fall, and when reaches bottom.For
Each temperature is tested and is averaged three times, is reduced experimental error, is improved the accuracy of measurement data.But inventor
It was found that throw point and the track of the control bead that external used experimental program not only cannot be scientific at present, but also not can be reduced small
Ball initial velocity difference bring additional effect, there is still a need for raisings for experimental data accuracy.
Summary of the invention
The purpose of the present invention is to overcome above-mentioned the deficiencies in the prior art, providing a kind of coefficient of viscosity measuring device,
Easy to operate, measurement efficiency is high, and measurement result is accurate.
To achieve the above object, the present invention adopts the following technical solutions:
A kind of coefficient of viscosity measuring device, including liquid contain device, and the liquid contains to be provided with above device
Crossbeam is fixed with collimation mechanism on the crossbeam, and the collimation mechanism is located at liquid and contains right above device, is used for regulation experiment
It is fallen along the vertical direction with bead, the collimation mechanism side is equipped with bracket, is connected with electricity by regulating mechanism on the bracket
Magnet, the regulating mechanism are used for regulating magnet horizontal direction and the position of vertical direction, electromagnet for adsorption experiment
Bead, the side that the liquid contains device are equipped with recording apparatus bracket, and the recording apparatus bracket is equipped with elevating mechanism, institute
It states elevating mechanism to connect with recording apparatus, the recording apparatus is for recording a video to bead dropping process.
Further, the liquid contains device and is placed into equidistant positioning rule mechanism, and equidistant positioning rule mechanism is by liquid
It contains device and is divided into the identical timing region of at least nine spacing.
Further, the equidistant positioning rule mechanism includes equilateral triangular prism graduated scale, the equilateral triangular prism graduated scale
Seamed edge be fixed with multiple circular ring structures disposed in parallel at equal intervals, the circular ring structure is used to contain device to liquid and carry out
Position positioning divides, and the circular ring structure is made of strong elastic steel wire.
Further, the collimation mechanism is conical hopper shape structure, and lower ending opening contains device, taper leakage towards liquid
The axis and horizontal plane of bucket-shaped structure are arranged.
Further, the regulating mechanism includes the first sleeve being fixed on bracket, and the first sleeve is equipped with the
One mounting hole, interior pass through of the first sleeve have adjusting cross bar, and the adjusting cross bar is equipped with first sliding groove, the first sleeve
It is fixedly connected by the first mounting hole and first sliding groove with cross bar is adjusted, the adjusting crossbar end is equipped with second sleeve, described
Second sleeve is equipped with the second mounting hole, and passing through in the second sleeve has adjusting vertical bar, and the adjusting vertical bar is equipped with second
Sliding slot adjusts vertical bar and is fixedly connected by second sliding slot, the second mounting hole with second sleeve, and the bottom end for adjusting vertical bar is fixed
There is electromagnet, the iron core of the electromagnet is cone, and the central point of electromagnet is used for adsorption experiment bead, and in electromagnet
Heart point can be adjusted to liquid using regulating mechanism on the central axis for containing device.
Further, the one end of the beam is fixed on column, and the column is fixed on one that the liquid contains device
Side.
Further, the crossbeam other end is fixedly connected with recording apparatus bracket, and the elevating mechanism is sliding using screw thread
Platform transmission mechanism, the lead screw including axis vertical setting, the lead screw both ends are connect with recording apparatus holder pivots, the lead screw
It is equipped with slide unit, the slide unit is fixedly connected with recording apparatus clamping device, and the recording apparatus clamping device is for clamping record
As device, the top of the lead screw is fixedly connected with handle.
Further, the recording apparatus uses mobile phone.
The invention also discloses a kind of working methods of coefficient of viscosity measuring device, comprising the following steps:
Step 1: by the position of regulating mechanism regulating magnet, the position of electromagnet being allow to fall into experiment with bead
Collimation mechanism contains in liquid and is packed into liquid to be measured in device, and electromagnet is powered, and experiment is adsorbed on electromagnet with bead
Conical iron core tip portion.
Step 2: electromagnet power-off, experiment fall into the testing liquid in liquid splendid attire device with bead by collimation mechanism
In, while using the position of elevating mechanism adjusting recording apparatus, so that recording apparatus is done descending motion with bead, fell to bead
Cheng Jinhang video recording.
Step 3: the video of recording apparatus acquisition being analyzed using video analysis software, each timing is passed through to bead
The time in region is recorded, and obtains bead at the uniform velocity drop and time, in conjunction with the length computation bead in timing region
By the velocity amplitude in each timing region, judge that bead enters the timing region of at the uniform velocity falling state according to obtained velocity amplitude.
Step 4: calculating the coefficient of viscosity of testing liquid.
Further, in the step 3, judge that bead enters the method for at the uniform velocity falling motion are as follows: if bead successively passes through
The time in the adjacent timing region of two crossed is equal, then it is assumed that bead at the uniform velocity falls from initially entering in the timing region first passed through
State, velocity amplitude reach terminal velocity.If the time in two adjacent timing regions that bead successively passes through is unequal, and passes through
The time in first timing region was significantly greater or less than by the time in the timing region after, then it is assumed that under bead is not up at the uniform velocity
State is fallen, speed is not up to terminal velocity.
Beneficial effects of the present invention:
1. coefficient of viscosity measuring device of the invention is avoided using electromagnet absorption and release experiment bead
Sweat stain, grease stain on hand pollutes bead surface, avoids the failure of experiment, while discharging bead using electromagnet, protects
Initial velocity when having demonstrate,proved bead release is zero, and will not generate horizontal initial rate, and electromagnet position is fixed, and bead is made to dish out point
Fixation is set, the science of repetition experiment is improved.
2. the present invention has regulating mechanism, the throwing elevation of bead can be adjusted, and can expand research bead with different
Speed reaches what difference is distance used in terminal velocity have after entering liquid, extends the research range of experiment.
3. the present invention divides timing region using equidistant positioning rule mechanism, the timing error generated by parallax can reduce,
The precision for determining timing locations is improved, and is easily guaranteed that the camera lens of recording apparatus is horizontal and is just in same with belt graduation mark
One horizontal position.
4. the present invention uses multiple timing regions, the precision of terminal velocity measurement can greatly improve, it is also seen that uneven
The change of even Liquid Viscous, is of great significance in practical applications.
5. run duration is analyzed with video software present invention introduces the mobile phone video record motion process generally used, it can
The precision for effectively improving time of measuring measures terminal velocity using video analysis software after recording a video using recording apparatus, surveys
It is more accurate to measure.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation do not constitute the restriction to the application for explaining the application.
Fig. 1 is overall structure of embodiment of the present invention schematic front view；
Fig. 2 is the equidistant positioning rule mechanism structure schematic diagram of the embodiment of the present invention
Fig. 3 is elevating mechanism of embodiment of the present invention structural schematic diagram；
Wherein, 1. glass, 2. crossbeams, 3. columns, 4. pedestals, 5. cylindrical sections, 6. conical sections, 7. boss structures, 8.
Frame, 9. first sleeves, 10. adjusting cross bars, 11. second sleeves, 12. adjusting vertical bars, 13. electromagnet, 14. recording apparatus brackets,
15. lead screw, 16. handles, 17. slide units, 18. mobile phones, 19. Mobile phone clips, 20. guide posts, 21. equidistant positioning rule mechanisms, 21-1.
Equilateral trigone graduated scale, 21-2. circular ring structure.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
In order to facilitate narration, if there is "upper", "lower", " left side " " right side " printed words in the present invention, only expression and attached drawing itself
Upper and lower, left and right direction it is consistent, not to structure rise restriction effect, it is only for convenient for description the present invention and simplification retouch
It states, rather than the equipment of indication or suggestion meaning or element must have a particular orientation, and be constructed and operated in a specific orientation,
Therefore it is not considered as limiting the invention.
As background technique is introduced, the experimental provision accuracy rate of existing falling ball method measurement coefficient of viscosity is low,
Measurement efficiency is low, in view of the above-mentioned problems, present applicant proposes a kind of coefficient of viscosity measuring devices.
In a kind of exemplary embodiment of the application, as shown in Figure 1-3, a kind of coefficient of viscosity measuring device, including
Liquid contains device, and the liquid contains and is provided with crossbeam 2 above device, and collimation mechanism, the standard are fixed on the crossbeam
Straight mechanism is located at liquid and contains right above device, is fallen along the vertical direction for regulation experiment with bead, the collimation mechanism one
Side is equipped with bracket, is connected with electromagnet by regulating mechanism on the bracket, electromagnetism iron level side is adjusted in the regulating mechanism
To and vertical direction position, electromagnet is used for adsorption experiment bead, and the side that the liquid contains device is equipped with video recording dress
Bracket is set, the recording apparatus bracket is equipped with elevating mechanism, and the elevating mechanism is connect with recording apparatus, the recording apparatus
For recording a video to bead dropping process.
The liquid contains the glass 1 that device uses cylindrical type, and the glass is placed on pedestal 4, and be located at etc.
Inside positioning rule mechanism 21, the equidistant positioning rule mechanism includes equilateral trigone graduated scale 21-1, the equilateral trigone scale
Three ribs of ruler are fixed with the circular ring structure 21-2 of the parallel spaced set of multiple distributions up and down, and the equilateral trigone graduated scale is adopted
It is made of acrylic, colourless plastic material, scale marker is equipped at seamed edge, the circular ring structure uses strong elastic steel wire system
At circular ring structure diameter is 6cm-8cm, and steel wire diameter 70um-100um, circular ring structure is where equilateral trigone graduated scale
One end of one end opposite side can be fixed with vertical bar, to ensure that all circular ring structures are parallel in place plane.The glass is placed
In the circular ring structure inner space of equilateral trigone graduated scale side.
The circular ring structure is arranged 10, and the distance of adjacent rings structure is 3cm, and glass is divided by 10 circular ring structures
9 timing regions can accurately determine a plane using circular ring structure disposed in parallel, reduce the meter generated by parallax
When error, improve accuracy of timekeeping.Using 9 timing regions, terminal velocity is calculated to each timing region, can greatly improve
The measurement accuracy of terminal velocity has also been found that the change of liquid viscosity using multiple timing regions for uneven liquid,
It is of great significance in practical application.
The top of the glass is equipped with crossbeam 2, and the one end of the beam is fixed on the top of column 3, the bottom of the column
End is fixed on pedestal 4, and the crossbeam is equipped with collimation mechanism mounting hole, is equipped with collimation machine by collimation mechanism mounting hole
Structure, the collimation mechanism is conical hopper shape structure, including cylindrical section 5 and the conical section being fixedly connected with cylindrical section bottom end 6, institute
Cylindrical section is stated across collimation mechanism mounting hole, and be placed on crossbeam by the boss structure 7 on cylindrical section top, can will collimate machine
Structure is positioned on crossbeam, the axis and horizontal plane of the conical hopper shape structure, guarantee experiment with bead fall into
There is no the initial velocity of horizontal direction before surveying liquid, when repeating to test, can guarantee that bead falls into the position consistency of testing liquid yet.
Bracket 8 is fixed in the crossbeam beam section of the collimation mechanism side, the cantilever tip is fixed with regulating mechanism, institute
Stating regulating mechanism includes the first sleeve 9 for being fixed on cantilever tip, opens up the first mounting hole in the first sleeve, and described first
Cross bar 10 is adjusted through having in sleeve, the adjustings cross bar is equipped with first sliding groove, in first mounting hole and first sliding groove
Across there is fixing bolt, be tightened nut on fixing bolt, realizes first sleeve and adjusts the fixation of cross bar, unclamps fixed spiral shell
Mother, fixing bolt are slided along first sliding groove, and the horizontal position for adjusting cross bar is adjusted, and the adjusting cross bar is located at collimation mechanism one
The end of side is fixed with second sleeve 11, through the adjusting vertical bar 12 for thering is axis vertical to be arranged in the second sleeve, described the
Two sleeves are equipped with the second mounting hole, adjust vertical bar and are equipped with second sliding slot, passing through in second mounting hole, second sliding slot has
Fixing bolt, be tightened on fixing bolt nut, realizes second sleeve and adjusts the fixation of vertical bar, unclamps fixture nut, make
Fixing bolt is slided along second sliding slot, and the height for adjusting vertical bar is adjusted, and the bottom end for adjusting vertical bar is fixed with electromagnet 13,
The electromagnet is by structure compositions such as coil, conical iron cores, and when energization, bead was used in adsorbable fixed experiment.Electromagnet is using circle
The central point of taper iron core, conical iron core is used for adsorption experiment bead, and electromagnet central point can utilize regulating mechanism tune
On the whole central axis to glass.
The side of the glass is provided with recording apparatus bracket 14, and recording apparatus bracket bottom end is fixed on pedestal
On, top is fixedly connected with crossbeam, and elevating mechanism is connected on the recording apparatus bracket, and the elevating mechanism is sliding using screw thread
The both ends of desk-top elevating mechanism, the lead screw 15 including axis vertical setting, the lead screw are turned by bearing and recording apparatus bracket
Dynamic connection, the top of the lead screw passes through the top of recording apparatus bracket, and is equipped with handle 16, facilitates operator to elevator
Structure is operated, and slide unit 17 is equipped on the lead screw, and rotational lead screw can drive the up and down motion of slide unit, consolidate on the slide unit
Surely there is recording apparatus clamping device, the recording apparatus clamping device uses hand for fixing recording apparatus, the recording apparatus
Machine 18, recording apparatus clamping device can be used common Mobile phone clip 19, and the slide unit also extends through that there are two guide posts 20, described to lead
It is fixed on recording apparatus bracket to the both ends of column, is oriented to for the movement to slide unit.
The slide unit also can be slidably mounted in a linear guide, and slide unit can move up and down along linear guide.Lifting
Smoothly moving up and down for recording apparatus may be implemented in mechanism, guarantees video recording effect.
The present embodiment also discloses a kind of application method of coefficient of viscosity measuring device, comprising the following steps:
Step 1: by the position of regulating mechanism regulating magnet, the position of electromagnet being allow to fall into experiment with bead
Collimation mechanism contains in liquid and is packed into liquid to be measured in device, and electromagnet is powered, and experiment is adsorbed on electromagnet with bead
Conical iron core tip portion.
Step 2: electromagnet power-off, experiment are fallen into the testing liquid in glass with bead by collimation mechanism, simultaneously
Rotational handle, swing handle adjust the position of mobile phone using screw thread sliding desk type elevating mechanism, and mobile phone is made to do decline fortune with bead
It is dynamic, it records a video to bead dropping process, and video recording is saved.
Step 3: the video recording that mobile phone is saved imports in video analysis software, utilizes video to the video of recording apparatus acquisition
Analysis software is analyzed, and is recorded to bead by the time in each timing region, is respectively obtained bead and is passed through 9 timing
The time in region, in conjunction with timing region length computation bead by the average speed value in each timing region, to 9 of acquirement
Velocity amplitude is compared, if bead is successively approximately equal by two adjacent timing zone times, can assert bead from
Start progress at the uniform velocity falling motion, bead speed in the timing region first passed through and reaches terminal velocity.If bead successively passes through
Two adjacent timing regions time it is unequal, and by the time in first timing region be significantly greater or less than by after
The time in timing region, then it is assumed that bead is not up at the uniform velocity falling state, speed and is not up to terminal velocity.
Step 4: coefficient of viscosity η is calculated using following formula:
Wherein, ρ is the density of bead；ρ0For the density of liquid；G is acceleration of gravity, and d is the small ball's diameter；D is fluid column
Diameter；H is the height of fluid column, and l is the distance moved after bead uniform motion, and t is time of the bead by distance l.
In the present embodiment, if after reaching at the uniform velocity, still having the run duration of partial region not identical, and differs larger, say
Prescribed liquid viscosity is uneven.Therefore, the device of the present embodiment can be found that the inhomogeneities of liquid viscosity, can measure viscosity not
The viscosity of uniform liquid different zones, the device can be used for the measurement of the liquid viscosities such as blood, it is multiple to can be used for medicine etc.
Field.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention
The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (10)
1. a kind of coefficient of viscosity measuring device, which is characterized in that contain device including liquid, the liquid contains on device
Side is provided with crossbeam, and collimation mechanism is fixed on the crossbeam, and the collimation mechanism is located at liquid and contains right above device, is used for
Regulation experiment is fallen along the vertical direction with bead, and the collimation mechanism side is equipped with bracket, passes through regulating mechanism on the bracket
It is connected with electromagnet, the regulating mechanism is for regulating magnet horizontal direction and the position of vertical direction, and electromagnet is for inhaling
Attached experiment bead, the side that the liquid contains device are equipped with recording apparatus bracket, and the recording apparatus bracket, which is equipped with, to be risen
Descending mechanism, the elevating mechanism are connect with recording apparatus, and the recording apparatus is for recording a video to bead dropping process.
2. a kind of coefficient of viscosity measuring device as described in claim 1, which is characterized in that the liquid contains device and puts
It is placed in equidistant positioning rule mechanism, liquid splendid attire device is divided into the identical timing of at least nine spacing by equidistant positioning rule mechanism
Region.
3. a kind of coefficient of viscosity measuring device as claimed in claim 2, which is characterized in that the equidistant positioning rule mechanism
Including equilateral triangular prism graduated scale, the seamed edge of the equilateral triangular prism graduated scale is fixed with multiple circles disposed in parallel at equal intervals
Ring structure, the circular ring structure are used to contain liquid device and carry out position positioning division, and the circular ring structure uses strength bullet
Property steel wire production.
4. a kind of coefficient of viscosity measuring device as described in claim 1, which is characterized in that the collimation mechanism is taper
Funnel-shaped structure, lower ending opening contain device towards liquid, and the axis and horizontal plane of conical hopper shape structure are arranged.
5. a kind of coefficient of viscosity measuring device as described in claim 1, which is characterized in that the regulating mechanism includes solid
The first sleeve being scheduled on bracket, the first sleeve are equipped with the first mounting hole, and passing through in the first sleeve has adjusting horizontal
Bar, the adjusting cross bar are equipped with first sliding groove, and the first sleeve is by the first mounting hole and first sliding groove and adjusts cross bar
Be fixedly connected, the adjusting crossbar end be equipped with second sleeve, the second sleeve be equipped with the second mounting hole, described second set
Passing through in cylinder has adjusting vertical bar, and the adjusting vertical bar is equipped with second sliding slot, adjusts vertical bar and passes through second sliding slot, the second mounting hole
It is fixedly connected with second sleeve, the bottom end for adjusting vertical bar is fixed with electromagnet, and the iron core of the electromagnet is cone, electricity
The central point of magnet is used for adsorption experiment bead, and electromagnet central point can be adjusted to liquid using regulating mechanism and contain device
Central axis on.
6. a kind of coefficient of viscosity measuring device as described in claim 1, which is characterized in that the one end of the beam is fixed on
On column, the column is fixed on the side that the liquid contains device.
7. a kind of coefficient of viscosity measuring device as described in claim 1, which is characterized in that the crossbeam other end and record
As appliance stand is fixedly connected, the elevating mechanism uses screw thread slide unit transmission mechanism, the lead screw including axis vertical setting, institute
It states lead screw both ends to connect with recording apparatus holder pivots, the lead screw is equipped with slide unit, and the slide unit and recording apparatus clamping fill
It sets and is fixedly connected, for the recording apparatus clamping device for clamping recording apparatus, the top of the lead screw is fixedly connected with handle.
8. a kind of coefficient of viscosity measuring device as described in claim 1, which is characterized in that the recording apparatus uses hand
Machine.
9. a kind of working method of the described in any item coefficient of viscosity measuring devices of claim 1-8, which is characterized in that packet
Include following steps:
Step 1: by the position of regulating mechanism regulating magnet, alloing the position of electromagnet that experiment to be made to fall into collimation with bead
Mechanism contains in liquid and is packed into liquid to be measured in device, and electromagnet is powered, and experiment is adsorbed on to the circle of electromagnet with bead
Taper iron core tip portion；
Step 2: electromagnet power-off, experiment are fallen into the testing liquid that liquid contains in device with bead by collimation mechanism, together
Shi Liyong elevating mechanism adjust recording apparatus position, so that recording apparatus is done descending motion with bead, to bead dropping process into
Row video recording；
Step 3: the video of recording apparatus acquisition being analyzed using video analysis software, each timing region is passed through to bead
Time recorded, in conjunction with timing region length computation bead by the velocity amplitude in each timing region, according to what is obtained
Velocity amplitude judges that bead enters the timing region of at the uniform velocity falling state, and obtains bead at the uniform velocity drop and time；
Step 4: calculating the coefficient of viscosity of testing liquid.
10. a kind of working method as claimed in claim 9, which is characterized in that in the step 3, under judging that bead enters at the uniform velocity
The method for falling movement are as follows: if the time in two adjacent timing regions that bead successively passes through is equal, then it is assumed that bead from from
The timing region first passed through initially enters at the uniform velocity falling state, and velocity amplitude reaches terminal velocity, if bead successively pass through two
The time in a adjacent timing region is unequal, and is significantly greater than by the time in first timing region by the timing region after
Time, then it is assumed that bead is not up at the uniform velocity falling state, speed and is not up to terminal velocity.
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| CN201910575495.3A CN110286061A (en) | 2019-06-28 | 2019-06-28 | A kind of coefficient of viscosity measuring device and working method |
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| CN113406714A (en) * | 2021-06-17 | 2021-09-17 | 上海织女星科技发展有限公司 | Lifting, aligning and releasing system for microgravity tower falling experiment |
| CN116205914A (en) * | 2023-04-28 | 2023-06-02 | 山东中胜涂料有限公司 | Waterproof coating production intelligent monitoring system |
| CN117804973A (en) * | 2024-02-29 | 2024-04-02 | 吴堡县四妹子农产品开发有限公司 | Tomato sauce viscosity performance inspection device |
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- 2019-06-28 CN CN201910575495.3A patent/CN110286061A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113406714A (en) * | 2021-06-17 | 2021-09-17 | 上海织女星科技发展有限公司 | Lifting, aligning and releasing system for microgravity tower falling experiment |
| CN113406714B (en) * | 2021-06-17 | 2022-06-14 | 上海织女星科技发展有限公司 | Lifting, aligning and releasing system for microgravity tower falling experiment |
| CN116205914A (en) * | 2023-04-28 | 2023-06-02 | 山东中胜涂料有限公司 | Waterproof coating production intelligent monitoring system |
| CN117804973A (en) * | 2024-02-29 | 2024-04-02 | 吴堡县四妹子农产品开发有限公司 | Tomato sauce viscosity performance inspection device |
| CN117804973B (en) * | 2024-02-29 | 2024-05-07 | 吴堡县四妹子农产品开发有限公司 | Tomato sauce viscosity performance inspection device |
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