CN208459216U - Vibrating type viscometer - Google Patents
Vibrating type viscometer Download PDFInfo
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- CN208459216U CN208459216U CN201820873574.3U CN201820873574U CN208459216U CN 208459216 U CN208459216 U CN 208459216U CN 201820873574 U CN201820873574 U CN 201820873574U CN 208459216 U CN208459216 U CN 208459216U
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Abstract
A kind of vibrating type viscometer, including fixing piece, vibration spring plate, distance-sensor, distance-sensor is located on the fixing piece of the close free end between the fixing end and free end of the vibration spring plate, after the predetermined displacement close to the distance-sensor of the free end of the vibration spring plate, distance-sensor is triggered from a kind of working condition and changes into another working condition, and issues electric signal；Driving device, including driving circuit and driving main body, the driving circuit are controlled by the controller, and provide predetermined resonant frequency signal to the driving main body；Temperature detection device is kept for the interval time of constant, collection distance-sensor the electric signal of driving device vibration frequency and the temperature data of sample with the distance-sensor, driving device and the controller of connection for the temperature detection of sample.The utility model has will not be by electromagnetic interference, the stable advantage of test result.
Description
Technical field
The utility model relates to a kind of instrument of viscosimetric, especially a kind of vibrating type viscometer.
Background technique
Viscosity is to indicate liquid in flowing, and the interior physical quantity to rub occurs for liquid internal, is the energy of liquid resistance deformation
Power is for identifying certain finished products or semi-finished product important indicator.
In Practical Project and industrial production, it is often necessary to the viscosity of liquid is detected, to guarantee optimal process operation environment
And product quality, to improve productivity effect.By the liquid viscosity in measurement process, the number of available fluid stream behavior
According to for predicting that the technology controlling and process of Product Process process, the operability of transporting and product when in use have important finger
Lead value.
Viscosimeter (Viscosimeter) is used to measure the instrument of the viscosity of liquid.Viscosimeter mainly has capillary viscosity
Meter, rotational viscometer and vibrating type viscometer three categories.Wherein, the working principle of vibrating type viscometer is: intracorporal in liquid
It will receive the inhibition of liquid when object vibration, the size of this effect is related with the viscosity of liquid.Common oscillatory type viscosity
Meter is equipped with an elastic slice.When by pulsed current excitation, elastic slice generates mechanical oscillation.When elastic slice is immersed in sample, bullet
The amplitude of piece is related with the viscosity of sample and density.In the case where known density, viscosity can be acquired from the frequency data measured
Numerical value.
A kind of vibrating type viscometer disclosed in Chinese patent literature CN102183440A is exactly this kind of product, it includes level
The fixing end of vibration device, the horizontal vibration device is fixed on bracket, and free end is equipped with sensing chip；Vibration device by
Excitation identical with its resonance frequency, sensing chip vibrate the viscous drag that will receive liquid in a liquid；One detection device is used
Movement velocity when vibrating vibration device becomes electric signal and sends controller to, and changing excitation density by control algolithm makes
The vibration velocity is kept constant, then can measure viscous drag, and then calculate viscosity.The detection device of the vibrating type viscometer
For electromagnetic detection mode, including detection coil and signal processing circuit；Detection coil is fixed on the other side of the permanent magnet, when
When permanent magnet is moved with horizontal vibration device, induced voltage is generated in detection coil, realizes horizontal vibration device movement speed
To the conversion of electric signal.This vibrating type viscometer has two groups of coils, one group of powered coil, and powered coil generates magnetic field excitation sense
Piece is answered to vibrate, another group of coil is detection coil, and induction is located at the induction that the permanent magnet on sensing chip generates in detection coil
Then induced voltage transformed value is again viscosity by voltage transformation value, this vibrating type viscometer is due to there are two groups of coils, two groups
Coil generates two magnetic fields, can usually generate interference between two magnetic fields, and makes measurement result unstable.
Summary of the invention
In order to overcome the above problem, the utility model provides one kind will not be by electromagnetic interference, the stable vibration of test result
Formula viscosimeter.
The technical solution of the utility model is: a kind of vibrating type viscometer is provided, by controller control while automatic measurement
The viscosity and temperature of liquid, including following components:
For fixing the fixing piece of driving device；
The vibration spring plate made of ferrimagnet, described vibration spring plate one end is fixedly connected with the fixing piece, described
The vibration spring plate other end is free end；
Distance-sensor, the fixing piece of the close free end between the fixing end and free end of the vibration spring plate
On, after the predetermined displacement close to the distance-sensor of the free end of the vibration spring plate, distance-sensor is triggered from one kind
Working condition changes into another working condition, and issues electric signal；
Driving device, including driving circuit and driving main body, the driving circuit are controlled by the controller, and lead to the driving
Body provides predetermined resonant frequency signal；
Temperature detection device, including temp probe and processing circuit, temp probe are used for the temperature detection of sample, place
The simulation signal for the temperature that reason circuit will test is changed into digital signal；
With the distance-sensor, driving device and the controller of connection, holding driving device vibration frequency is constant, collects
Distance-sensor triggering moment, to issue the time of electric signal at the beginning of calculating elastic slice starting of oscillation to distance-sensor
The temperature data of difference and sample.
As the improvement to the utility model, the utility model further includes made of ferrimagnet for described in stabilization
The baffle of vibration spring plate vibration, the baffle and the vibration spring plate are arranged in parallel, and the baffle is located at the vibration spring plate
Far from the fixing piece side, at least one end of the baffle is fixedly connected with the fixing piece.
As the improvement to the utility model, the driving main body includes iron core and driving coil；The driving coil is logical
Magnetic field is generated after electricity, vibrates vibration spring plate.
As the improvement to the utility model, the fixing piece is a box body, and the vibration spring plate is located at the outside of box body
On wall, at least described driving main body and the distance-sensor are located in box, the driving main body and the distance-sensor one
It stretches out in outside box body to end part, and corresponding with the position of the vibration spring plate.
As the improvement to the utility model, protection circuit is parallel between the disengaging both ends of the driving coil.
As the improvement to the utility model, there are also range sensor protective covers for 3 outside of range sensor.Distance passes
Sensor is embedded into protective cover, first is that playing protection waterproof action, two can also play the role of fixation spring tab displacement.
As the improvement to the utility model, the utility model further includes container and the executing agency for containing solvent, described
Solvent in container is blended into test solution according to the instruction of controller when the viscosity of fluid to be measured is greater than predetermined value by executing agency
In vivo.
The utility model has will not be by electromagnetic interference, the stable advantage of test result.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of an embodiment of the present invention.
Fig. 2 is the protection electrical block diagram of Fig. 1.
Specific embodiment
Specific embodiment of the present utility model is described in further detail with reference to the accompanying drawing.
The working principle of the utility model is:
When to driving coil input preset frequency rectangular pulse signal when, driving coil due to it is electric can generate magnetic field,
To attract vibration spring plate deformation, vibration spring plate can be mobile to distance-sensor in magnetic field, when the free end of the vibration spring plate to
For the distance-sensor after predetermined displacement, triggering distance-sensor changes into another work shape from a kind of working condition
State, and electric signal is issued to controller, controller controls driving coil and powers off at once.Vibration spring plate restores reset condition.Week and
It renews, vibrates vibration spring plate always.Controller according to vibration spring plate starting of oscillation at the beginning of to distance-sensor issue telecommunications
Number time difference, find out the viscosity of liquid；When detection, environment temperature has the temperature difference with temperature when calibration, also need to measurement
Viscosity is modified.
According to the definition of viscosity, it is defined as a pair of of parallel-plate, area A is filled with certain liquid between dr, plate；The present is to upper
Plate applies a thrust F, power needed for making it generate a velocity variations degree.Since the viscosity of liquid transmits this power layer by layer, each layer
Also corresponding sports, one velocity gradient dv/dr of formation claim shear rate to liquid, and F/A is known as shear stress.Shear rate and shearing
There is following relationship between stress:
(F/A)=η (dv/dr) formula one
η is viscosity, and F is the thrust applied onboard, and A is the area of plate, and dv/dr is that the speed in unit length increases
Amount, i.e. dv are speed increment, and dr is displacement increment.
In the utility model, apply thrust onboard:
F=F1-F2 formula two
F1 is magnetic force, and F2 is the elastic force of elastic slice.
Speed increment in unit length:
(dv/dr)=V/S=1/t formula three
V is the average speed of elastic slice, and S is elastic slice displacement, and t is the time of elastic slice movement.
To sum up: η=(F1-F2) * t/A formula four
F1 is magnetic force in formula, and F2 is elastic force, and t is elastic slice run duration, and A is elastic slice area.F1, F2, A are invariant,
It can be seen that liquid viscosity is directly proportional to the run duration of elastic slice, as long as detecting that elastic slice run duration can find out the viscosity of liquid.
When viscosity sensor is put into a kind of normal fluid, time t0 at this time can detecte out, viscosity at this time can
To be measured with flow cup.So as to obtain the value of (F1-F2)/A.
When being put into fluid to be measured, the time t of liquid can be detected out, can be calculated separately by the formula of bringing into four
A kind of viscosity of liquid.
When viscosity apparatus immerse liquid in when, due to liquid viscosity difference, thus at the beginning of vibration spring plate starting of oscillation to away from
The time for issuing electric signal from inductor also can be different, by detection vibration spring plate starting of oscillation at the beginning of sent out to distance-sensor
The time difference of electric signal can measure the viscosity of liquid out.
Referring to Figure 1 and Fig. 2, Fig. 1 and Fig. 2 disclose be a kind of vibrating type viscometer, by controller control simultaneously it is automatic
Measure the viscosity and temperature of liquid, including following components:
For fixing the fixing piece 1 of driving device 4；
Vibration spring plate 2 made of ferrimagnet, described 2 one end 21 of vibration spring plate are fixedly connected with the fixing piece 1,
2 other end of vibration spring plate is free end 22；Ferrimagnet in the present embodiment can be iron, cobalt or nickel and its iron cobalt
Or the alloy material of nickel, especially steel disc or teleoseal piece；
Distance-sensor 3, the fixation of the close free end 22 between the fixing end and free end of the vibration spring plate 2
On part 1, when the free end 22 of the vibration spring plate 2 to the distance-sensor 3 close to predetermined displacement after, trigger distance-sensor
3 change into another working condition from a kind of working condition, and issue electric signal；Distance-sensor 3 in the utility model can
Be close to switch or range sensor, when the free end of vibration spring plate 2 22 to the distance-sensor 3 close to predetermined displacement
Afterwards, triggering distance-sensor 3 is from pass, or the variation from closing to opening is reached, so that distance-sensor 3 be made to generate a telecommunications
Number, electric signal is fed to controller 6；
Driving device 4, including driving circuit 41 and driving main body 42, the driving circuit 41 is controlled by controller 6, to institute
It states driving main body 42 and predetermined resonant frequency signal is provided；Resonant frequency signal is generally square-wave pulse signal；
Temperature detection device 5, including temp probe 51 and processing circuit 52, temp probe 51 both can be used for sample
Temperature detection, also can detecte the temperature of coil.The simulation signal for the temperature that processing circuit 52 will test is changed into number
Signal；
With the distance-sensor 3, driving device 4 and the controller 6 connecting, the perseverance of 4 vibration frequency of driving device is kept
The triggering moment of electric signal that is fixed, collecting distance-sensor 3 and the temperature data of sample.Controller 6 in the present embodiment be by
The chip and base peripheral circuit of model stm8s105 is constituted.
Preferably, the utility model further includes vibrating made of ferrimagnet for stablizing the vibration spring plate 2
Baffle 7, the baffle 7 are arranged in parallel with the vibration spring plate 2, and the baffle 7 is located at the separate described of the vibration spring plate 2
The side of fixing piece 1, at least one end of the baffle 7 are fixedly connected with the fixing piece 1.The baffle 7 plays protection vibration
The effect of elastic slice 2 and stable vibration elastic slice 2, i.e., after driving coil 422 powers off, vibration spring plate 2 can stop in time.
Preferably, the driving main body 42 includes iron core 421 and driving coil 422；The driving coil 422 produces after being powered
Magnetisation field vibrates vibration spring plate 2.The shape of the iron core 421 can be U-shaped, and the driving coil 422 can be divided into 2
On a two poles for being respectively wound around U-iron core, it is also possible to an independent driving coil 422 and is wrapped in U-iron core
On the pole of the free end 22 of elastic slice 2；
Preferably, the fixing piece 1 is a box body, and the vibration spring plate 2 is located on the lateral wall of box body, at least described drive
Dynamic main body 42 and the distance-sensor 3 are located in box, and the driving main body 42 and 3 one end of the distance-sensor are partly stretched
Outside for box body, and it is corresponding with the position of the vibration spring plate 2.
Preferably, protection circuit 8 is parallel between the disengaging both ends of the driving coil 422.Protection circuit 8 can join
See Fig. 2, the first voltage-stabiliser tube D1 and the second voltage-stabiliser tube D2 in circuit is protected to play the induced electricity to driving coil 422 after a loss of power
The effect discharged, while immediate stability elastic slice can be played the role of after power-off.Third voltage-stabiliser tube D3, the 4th voltage-stabiliser tube
D4, the 5th voltage-stabiliser tube D5 and the 6th voltage-stabiliser tube D6 play the role of the electric signal that stabilizing distance inductor 3 is inputted to controller 6.
Preferably, there are also range sensor protective covers for 3 outside of range sensor.Range sensor is embedded into protective cover
Interior, first is that playing protection waterproof action, two can also play the role of fixation spring tab displacement.
Preferably, the utility model further includes container and the executing agency for containing solvent, and the executing agency is in test solution
When the viscosity of body is greater than predetermined value, the solvent in container is blended into fluid to be measured according to the instruction of controller 6.
Obviously, it is practical without departing from this can to carry out various modification and variations to the utility model by those skilled in that art
Novel spirit and scope.If in this way, these modifications and variations of the present invention belong to the utility model claims and
Within the scope of its equivalent technologies, then the utility model is also intended to including these modification and variations.
Claims (5)
1. a kind of vibrating type viscometer, by controller control while the viscosity and temperature of automatic measurement liquid, including following components:
For fixing the fixing piece (1) of driving device (4)；It is characterized in that,
The vibration spring plate made of ferrimagnet (2), vibration spring plate (2) one end (21) and the fixing piece (1) are fixed
Connection, vibration spring plate (2) other end are free end (22)；
Distance-sensor (3) is located at consolidating for close free end (22) between the fixing end and free end of the vibration spring plate (2)
Determine on part (1), after the predetermined displacement close to the distance-sensor (3) of the free end (22) of the vibration spring plate (2), triggering
Distance-sensor (3) changes into another working condition from a kind of working condition, and issues electric signal；
Driving device (4), including driving circuit (41) and driving main body (42), the driving circuit (41) are controlled by controller (6)
System provides predetermined resonant frequency signal to the driving main body (42)；
Temperature detection device (5), including temp probe (51) and processing circuit (52), temp probe (51) is for sample
The simulation signal of temperature detection, the temperature that processing circuit (52) will test is changed into digital signal；
With the distance-sensor (3), driving device (4) and the controller (6) connecting, driving device (4) vibration frequency is kept
Triggering moment that is constant, collecting distance-sensor (3), issues the time of electric signal to distance-sensor at the beginning of starting of oscillation
The temperature data of difference and sample.
2. the vibrating type viscometer according to claim 1, which is characterized in that further include being used made of ferrimagnet
In the baffle (7) for stablizing the vibration spring plate (2) vibration, the baffle (7) and the vibration spring plate (2) are arranged in parallel, and institute
State baffle (7) be located at the vibration spring plate (2) far from the fixing piece (1) side, at least one end of the baffle (7) with
The fixing piece (1) is fixedly connected.
3. according to claim 1 or vibrating type viscometer described in 2, which is characterized in that the driving main body (42) includes iron core
(421) and driving coil (422)；The driving coil (422) generates magnetic field after being powered, and vibrates vibration spring plate (2).
4. vibrating type viscometer according to claim 3, which is characterized in that in the disengaging two of the driving coil (422)
Protection circuit (8) is parallel between end.
5. vibrating type viscometer according to claim 1 or 2, which is characterized in that further include containing the container of solvent and holding
Row mechanism, the executing agency, will be in containers according to the instruction of controller (6) when the viscosity of fluid to be measured is greater than predetermined value
Solvent is blended into fluid to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820873574.3U CN208459216U (en) | 2018-06-07 | 2018-06-07 | Vibrating type viscometer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820873574.3U CN208459216U (en) | 2018-06-07 | 2018-06-07 | Vibrating type viscometer |
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| CN208459216U true CN208459216U (en) | 2019-02-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108827831A (en) * | 2018-06-07 | 2018-11-16 | 深圳市鸿曙科技有限公司 | Oscillatory type viscosity apparatus and its Detection Method of Liquid Viscosity |
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2018
- 2018-06-07 CN CN201820873574.3U patent/CN208459216U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108827831A (en) * | 2018-06-07 | 2018-11-16 | 深圳市鸿曙科技有限公司 | Oscillatory type viscosity apparatus and its Detection Method of Liquid Viscosity |
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Effective date of registration: 20200407 Address after: 518000 West Plaza, Shenzhen North Station, Zhiyuan Middle Road, Longhua District, Shenzhen City, Guangdong Province Patentee after: Ye Yaojian Address before: 518000 Xin'an road building 706, Guan Lan Road, Guan Hu Street, Longhua New District, Shenzhen, Guangdong, China 706 Patentee before: SHENZHEN HS TECH Co.,Ltd. |