175 results about "Viscosity measurement" patented technology

The invention relates to the technical field of viscosity measurement, and discloses a verification system for a viscometer, comprising: a dynamic temperature compensation module for collecting temperature data inside and outside the viscometer in real time; the embedded controller is responsible for receiving the temperature data, executing a temperature compensation process and outputting a temperature compensation coefficient and an initial viscosity value; the multi-modal data fusion calibration module is used for receiving a temperature compensation coefficient provided by the multi-modal data fusion calibration module and data from a pressure sensor, a shear rate sensor and a vibration sensor, and carrying out joint modeling on the data by utilizing a weighted average method; the invention also discloses a verification method for the viscometer, which comprises the following steps: acquiring temperature data inside and outside the viscometer through the temperature sensor, and performing temperature compensation through the embedded controller. According to the invention, the multi-modal data fusion calibration module is introduced, and data from a plurality of sensors are integrated through a weighted average method, so that the optimized viscosity value is more comprehensive and reliable.

The utility model provides an on-line rotary viscometer, which belongs to the technical field of viscosity measuring instruments and comprises a measuring chamber, a rotor, a stator, a driving component and a detecting piece, and the measuring chamber is suitable for being communicated with a pipeline to be measured; the rotor is arranged in the measuring chamber, the rotor is of a cylinder structure with a cavity inside, and a plurality of liquid inlet grooves communicated with the cavity are formed in the side wall of the rotor; the stator is rotatably arranged in the cavity, and a medium channel is arranged between the stator and the rotor; the driving assembly is connected with the rotor, a medium flowing through the medium channel can rotate around the stator under the rotating action of the rotor, and the rotating medium can drive the stator to rotate or drive the stator to generate a rotating trend; the detection piece detects the viscous torque borne by the stator during rotation. According to the online rotary viscometer provided by the utility model, the rotation of the stator is driven by a medium without friction loss caused by a transmission process, so that the viscous torque during the rotation of the stator is accurately obtained, and the accuracy of a result is improved.

The utility model discloses a suspension type viscosity and density on-line measuring device. The device comprises a cavity, a rotating part, a reference rotor, a suspension rotor, a torsional elastic piece and a distance measuring sensor, the rotating part is fixedly connected to the cavity; the reference rotor is fixedly connected to the outer wall of the rotating shaft, synchronously moves along with the rotating shaft and is higher than the liquid level of measured liquid; a suspension detection end is arranged at the upper end of a suspension body of the suspension rotor, the suspension body is connected with the rotating shaft through a torsion elastic piece, the suspension body suspends in detected liquid, the suspension detection end is exposed out of the detected liquid, and the suspension rotor is driven by the rotating shaft to rotate; the distance measuring sensor fixed in the cavity measures the rotating speed of the reference rotor, the axial displacement of the suspension detection end and the phase difference between the reference rotor and the suspension rotor so as to calculate the viscosity and density of the liquid to be measured. The device has the effects of measuring the density and the viscosity of liquid in real time and being high in measurement precision.

The invention discloses a measuring range widening method, device and equipment of a viscosity sensor and a medium, and relates to the field of viscosity measurement, the method comprises the following steps: adjusting the amplitude or frequency of an excitation signal, and when the resonance response waveform of a vibration element of the viscosity sensor meets a first exponential decay rule, determining that the vibration element of the viscosity sensor has a second exponential decay rule; determining a viscosity measurement boundary value of the viscosity sensor and an amplitude boundary value and a frequency boundary value of the excitation signal; based on the viscosity measurement boundary value, segmenting the measuring range of the viscosity sensor to obtain a plurality of sub-measuring range segments; based on the amplitude boundary value and the frequency boundary value, determining the amplitude and the frequency value of an excitation signal applied to the driving element in the sub-range section; adjusting the amplitude or frequency of the excitation signal of the sub-range segment, and determining the target amplitude and target frequency of the excitation signal of the sub-range segment when the sub-resonant response waveform in the sub-range segment meets a second exponential decay rule; and based on the target amplitude and the target frequency of the sub-range section, carrying out viscosity calibration of the viscosity sensor on the sub-range section.

The invention discloses a multi-partition emulsification system, and relates to the technical field of emulsification systems. Comprising a feeding module, and the feeding module comprises a feeding distributor and a plurality of feeding pipelines; each feeding pipeline is provided with a flow sensor and a pressure sensor, and the feeding state is monitored in real time; the feeding distributor distributes the raw materials of different pipelines to different subsequent treatment areas according to a preset algorithm; the detection and analysis module adopts detection technologies including spectral analysis, chromatographic analysis and viscosity measurement, and is used for comprehensively analyzing the liquid raw materials entering the system. According to multi-component components and physicochemical properties of liquid raw materials, comprehensive detection and analysis can be carried out through the feeding module, the liquid raw materials are accurately distributed to the most suitable emulsification area by means of the intelligent flow dividing module, and it is ensured that targeted fine emulsification treatment is obtained in the corresponding area; therefore, the problems of unstable emulsification effect and uneven product quality are solved.

The invention relates to the technical field of chemical production regulation and control, and discloses a system for thickening agent addition and on-line viscosity regulation and control in a post-regulation stage of a polyacrylic acid emulsion. The system comprises an overview construction module, a coefficient generation module, a rate optimization module and an execution control module. The overview construction module creates a production overview based on user settings, wherein the production overview comprises a reaction tank body connection relationship and thickening agent injection node parameters; the coefficient generation module is used for collecting real-time stirring state data and tank reaction data, respectively constructing a stirring state model and a tank reaction model, and outputting a stirring state coefficient and a tank reaction coefficient; the rate optimization module obtains the difference value between the current viscosity measurement value and the target viscosity, constructs a rate optimization model in combination with the tank reaction coefficient, the stirring state coefficient and the viscosity difference value, and outputs the target thickening agent injection rate; and the execution control module drives the thickening agent injection device according to the target thickening agent injection rate. According to the system, the accuracy and the stability of viscosity regulation and control are improved.

The invention discloses a liquid viscosity measuring system and an auxiliary device. The device comprises a measuring tube, a liquid level sensor and an auxiliary device, the sensor assembly is arranged at one end of the measuring tube and comprises a PCB (Printed Circuit Board) and an ultrasonic transducer on the PCB, and the PCB is configured to excite the ultrasonic transducer to transmit an ultrasonic signal and collect the ultrasonic signal received by the ultrasonic transducer; the reflecting end is arranged at the other end of the measuring tube and faces the ultrasonic transducer, a closed measuring space is formed between the reflecting end and the sensor assembly, so that liquid cannot leak after being injected into the measuring space, and an ultrasonic signal transmitted by the ultrasonic transducer can be reflected back by the reflecting end after penetrating through the liquid and is received by the ultrasonic transducer; and the propagation speed and signal attenuation of the ultrasonic waves related to the liquid viscosity in the liquid are obtained based on the ultrasonic signals received by the ultrasonic transducer. According to the invention, the propagation velocity and signal attenuation of ultrasonic waves in different liquid media are accurately measured by flexibly changing measurement conditions, so that accurate evaluation of the liquid viscosity is realized.

The invention relates to the technical field of viscosity detection, in particular to lubricating oil viscosity detection equipment which comprises a base fixedly connected with a barrel and further comprises a stirring viscosity measuring mechanism connected with the base, the stirring viscosity measuring mechanism comprises a lifting adjusting mechanism, the lifting adjusting mechanism is connected with a telescopic rotating mechanism, and the telescopic rotating mechanism is connected with the barrel. A protective shell is fixedly installed at the end of the telescopic rotating mechanism, a first motor is fixedly installed in the protective shell, an output shaft of the first motor is fixedly connected with a rotating disc, the rotating disc is rotationally connected with the protective shell, the rotating disc is fixedly connected with a fixing plate, the fixing plate is fixedly connected with a resistance sensor, and the lower end of the fixing plate is fixedly connected with a scraping strip. And the deoiling mechanism is connected with the lifting adjusting mechanism. According to the device, the viscosity of lubricating oil is measured in a mode that the stirring viscosity measuring mechanism is matched with the oil removing mechanism, and then the device is automatically subjected to liquid spraying and scrubbing operation for removing oil stains, so that automatic measurement and automatic cleaning are realized, and the detection efficiency is improved.

The invention belongs to the technical field of viscosity detection, and discloses a coating viscosity detection adjusting device which comprises a base, a mounting rod fixed at the top end of the base, a viscosity measuring instrument fixed at the top end of the mounting rod, a lifting mechanism fixed at the top end of the base, and a clamping mechanism mounted at the top end of the lifting mechanism. Through cooperation of structures such as a supporting seat, a first supporting rod and a first connecting rod, the device can start a servo motor to drive a screw rod to rotate when the height of a to-be-tested sample needs to be adjusted, so that the screw rod drives a second connecting seat to move; a first connecting rod and a second connecting rod are contracted or unfolded by changing the position of a second connecting seat, and a third connecting rod and a fourth connecting rod at the top end are synchronously folded at the same angle, so that the heights of a top-end top plate and a to-be-tested sample at the top end of the top plate are changed, and the to-be-tested sample is lifted; therefore, the purpose of improving the detection efficiency by quickly adjusting the height of the sample to be detected by the device is achieved.

Provided in the present disclosure are a variable-diameter device for measuring a viscous liquid and a viscosity measurement method. The variable-diameter device comprises: a variable-diameter stator mechanism, which is provided with a support frame and an elastic body sleeved on the support frame, the support frame having a first adjustment frame and a second adjustment frame which are connected to each other; and an adjustment structure, which is provided with a shaft rod structure and at least one adjustment component which are connected to each other, the shaft rod structure being arranged inside the support frame, and the at least one adjustment component being in a circumferentially-slidable connection to the support frame. The second adjustment frame can be circumferentially-movably arranged relative to the first adjustment frame by means of the at least one adjustment component, so as to change the radial dimension of the support frame. The variable-diameter device provided by the present disclosure satisfies the requirement of changing the stator diameter in a rotary viscometer in the technical field of rotary viscosity measurement, thereby achieving the purpose of dynamically adjusting the measuring range of the viscometer during viscosity measurement.

The invention discloses a thickened oil viscosity measuring device, and relates to the technical field of thickened oil viscosity detection. Comprising a base, a collecting cylinder is arranged on the base, detection cylinders are arranged on the base in an array mode, and oil discharging valves are arranged on the detection cylinders; a lifting mechanism is arranged on the base, the lifting mechanism comprises a lifting seat, rotor mechanisms are arranged on the lifting seat in a sliding and array mode, radial stirring mechanisms and fixing mechanisms are arranged in the rotor mechanisms, a filter plate and a bottom plate are arranged in the detection cylinder, and a clamping mechanism is arranged on the detection cylinder and used for fixing the filter plate and the bottom plate; a scraping mechanism is arranged at the bottom end of the lifting seat and is used for scraping the filter plate and the bottom plate; a mounting frame is connected to the lifting seat, and a driving mechanism is arranged on the mounting frame and used for driving the rotor mechanisms; the device can be used for measuring the viscosity of the thickened oil, is rich in function, can be used for pretreating the thickened oil, and is convenient in subsequent maintenance.

The invention relates to the technical field of viscosity measurement, in particular to a viscosity measurement protection device for film-forming material research and development, which comprises a base, a support frame is fixedly mounted at the upper end of the base, a viscosity tester body is movably mounted on the outer surface of the support frame, and a pivot cup is mounted at the lower end of the viscosity tester body. An annular elastic sleeve plate is connected to the upper end of a protection frame, clamping mechanisms are evenly distributed on the inner ring surface of the annular elastic sleeve plate, when the annular elastic sleeve plate sleeves the outside of a pivot cup, a plug-in assembly is shifted to move integrally, and a clasping annular plate is promoted to release limitation and wrap the outside of the annular elastic sleeve plate below; when the annular elastic sleeve plate achieves elastic deformation, the clamping mechanism conducts compression, certain reverse elastic force achieves clamping of the pivot cup, shaking of the rotor during high-speed rotation can be weakened, disassembly and assembly of the protection frame are facilitated, operation is convenient and fast, and meanwhile the accuracy of material viscosity test data is promoted.

This application describes a viscosity measuring instrument that measures viscosity as a function of shear rate in a high throughput manner. The instrument may include multiple viscosity measurement sensor chips arranged in parallel so that viscosity is measured at multiple shear rates simultaneously for many samples. For example, the instrument may include multiple viscosity sensors with liquid flow channels for measuring viscosities of liquids flowing through the flow channels and multiple syringes, each outlet of which is connected to a corresponding inlet of multiple viscosity sensors. The instrument may also include a pump module with a pusher block having a mechanism to lock and unlock ends of pistons of the multiple syringes.

The application relates to the technical field of viscosity measurement, in particular to a viscosity measurement protection device for film-forming material research and development, which comprises a base, a supporting frame is fixedly installed at the upper end of the base, a viscosity tester body is movably installed on the outer surface of the supporting frame, and a pivot cup is installed at the lower end of the viscosity tester body. An annular elastic sleeve plate is connected to the upper end of the protection frame, the inner ring surface of the annular elastic sleeve plate is uniformly arranged with clamping mechanisms, when the annular elastic sleeve plate is sleeved outside the pivot cup, the plug-in assembly is driven to move as a whole, the clamping ring plate is released from the limitation and is wrapped outside the annular elastic sleeve plate downwards, the annular elastic sleeve plate is elastically deformed, the clamping mechanisms are compressed, a certain reverse elastic force clamps the pivot cup, the shaking of the rotor during high-speed rotation is weakened, the protection frame is convenient to disassemble and assemble, the operation is convenient, and the accuracy of the material viscosity test data is improved.

The utility model relates to a portable viscosity measuring device. The portable viscosity measuring device comprises a rack and a measuring column, the rack is provided with an operation surface. A groove is formed in the operation surface. The measuring column is provided with a detection end and an installation end which are opposite. And the mounting end is located in the groove and is rotatably connected with the rack, so that the measuring column is transversely accommodated in the groove or the detection end is turned outwards to the outside of the groove. When viscosity detection needs to be carried out, the detection end is overturned out of the groove, so that the measuring column is erected, and then liquid to be detected is dropped into the detection opening of the detection end for viscosity measurement; when viscosity detection is not needed, the detection end is turned into the groove, and the measuring column is transversely arranged in the groove, so that the height of the portable viscosity measuring device in an unused state is reduced, and the purposes of reducing the size and being convenient to carry are achieved. The portable viscosity measuring device has the advantages of being convenient to use and carry, and can meet the requirement of on-site rapid detection.

In the inkjet recording apparatus of the present invention, ink solidification during a stop period can be prevented, and if the viscosity of the ink in the main ink container deviates from an appropriate viscosity range, the viscosity of the ink can be adjusted to be within an appropriate range. The configuration controls the printhead and main body such that, at regular intervals during a printhead stop period, solvent stored in the solvent container is repeatedly supplied to the printhead and returned to the ink container via a circulation path and a recovery path. Furthermore, if the viscosity of the ink measured by the viscosity measuring unit is higher than a predetermined range, while the printhead is mounted in the printhead mounting unit, a portion of the ink stored in the ink container is discarded from the printhead to the interior of the printhead mounting unit via a supply path, and solvent stored in the solvent container is supplied to the ink container, thereby reducing the viscosity of the ink stored inside the ink container.

The present invention discloses a foam cleaning agent viscosity testing device, which relates to the field of viscosity testing technology, and comprises a mounting plate, wherein the four corners of the bottom of the mounting plate are fixedly connected with support columns, the inner wall of the bottom end of the mounting plate is provided with through holes, and a detection cylinder is fixedly connected to the corresponding through holes. The present invention can make the solid particles in the foam cleaning agent sample evenly distributed in the sample when it is necessary to perform a viscosity test on a foam cleaning agent containing solid particles, and at the same time, it can make the inside of the detection cylinder and the cleaning agent sample free of air, and during the rotation of the rotor in the rotary viscometer, no bubbles are generated in the foam cleaning agent sample, so as to prevent the existence of bubbles from changing the flow characteristics of the foam cleaning agent and affecting the accuracy of the viscosity measurement, thereby greatly improving the accuracy and reliability of the device when performing viscosity testing on the foam cleaning agent.

To accurately predict a behavior of voids occurring in a resin molded product produced by an injection molding process using resin materials.SOLUTION: A void occurrence prediction method includes: obtaining temperature dependency data of Young's modulus in a molten state from viscosity measurement results using formula (I); creating an analytical model of an injection molded product; obtaining a temperature distribution and a pressure distribution of the analytical model during a molding process; calculating a temperature distribution of the analytical model during a cooling process after demolding; calculating an elastic modulus distribution and a temperature load distribution of the analytical model based on the temperature dependency data of Young's modulus and the temperature distribution and pressure distribution; calculating distortion occurring in the analytical model by structural analysis using the elastic modulus distribution and the temperature load distribution; and predicting at least one of a void occurrence location and a void volume from the distortion. E=ω1η+ω2 ... (I), where η: viscosity, E: Young's modulus, ω1,ω2: constant.SELECTED DRAWING: Figure 2

The utility model discloses an emulsion viscosity measurer, which relates to the technical field of viscometers and comprises a base, the base is fixedly connected with a support frame, an inner cavity of the support frame is fixedly connected with a lifting assembly, the front of the lifting assembly is fixedly connected with a fixing assembly, the lower surface of the fixing assembly is in lap joint with the upper surface of the base, and the lower surface of the fixing assembly is in lap joint with the upper surface of the base. A sample container is clamped to the upper surface of the middle of the fixing assembly, and a viscosity measuring assembly is fixedly connected to the upper portion of the front face of the supporting frame and located above the sample container. According to the emulsion viscosity measurer disclosed by the utility model, under the action of the hydraulic rod, the moving block and the guide rod, the supporting plate can drive the sample container to move into the protective cover, and under the action of the protective cover, a rotor at the lower part of the viscosity measuring assembly is protected; meanwhile, heat preservation can be carried out on the sample container when the sample is tested, so that heat dissipation is reduced, and the testing accuracy is improved.

A viscometer for measuring viscosity of a fluid uses one or more ultrasound transducers to conduct an ultrasound-based time-of-flight measurement process in which an ultrasound pulse is transmitted into the fluid at a first time and received by a transducer at a second time. A viscometer has at least one transducer receptacle configured for being immersed in the fluid. The at least one transducer receptacle receives one or more ultrasound transducers and fluidly isolates the transducer(s) from the fluid. The viscometer enclosure is shaped and arranged so that, when the ultrasound-based time-of-flight measurement process is conducted, the ultrasound pulse travels a predefined distance through the fluid from where the ultrasound pulse is transmitted to where the ultrasound pulse is received, whereby a time of flight of the ultrasound pulse from when the ultrasound pulse is transmitted to when the ultrasound pulse is received indicates the viscosity of the fluid.

The invention discloses a liquid viscosity measuring method based on a phase-locked loop algorithm. Liquid flows in the guided wave resonance element, the excitation and receiving coil is arranged on the surface of the guided wave resonance element in an attached mode, a permanent magnet is arranged beside the excitation and receiving coil, the temperature control module is connected with the guided wave resonance element, and the current sampling resistor is connected with the excitation and receiving coil in series. Ultrasonic guided-wave vibration is generated in a guided-wave resonant element through an exciting coil, voltage and current response signals of the resonant element are synchronously acquired by using a dual-channel synchronous sampling module, an impedance real part of the resonant element is accurately extracted according to the response signals, and accurate measurement of the liquid viscosity is realized by combining an established impedance-viscosity relation model. According to the invention, not only are the limitations of complex equipment, high cost and high requirement on sample volume of the traditional viscosity measurement method overcome, but also the problems of poor measurement stability, complex device manufacturing and difficulty in realizing online real-time monitoring under the working condition of strong noise or high damping in the existing method are solved.

The utility model relates to a viscometer. The viscometer comprises a cross arm, one end of the oblique arm is connected with the cross arm, the connecting position is a turning position, a first measuring piece is arranged on the turning position and used for recording the first height of the sample liquid column, and an injection port is formed in the end, away from the turning position, of the cross arm; one end of the plumbing arm is connected with the other end of the inclined arm, a second measuring piece and a third measuring piece are arranged on the plumbing arm, and the second measuring piece and the third measuring piece are used for measuring the flowing time of the sample; communicated sample flowing paths are arranged in the cross arm, the inclined arm and the plumbing arm, a vertical small pipe is arranged in the tail end of the cross arm, and the viscometer provided by the utility model can realize accurate control of the height of a measured liquid column and ensure the consistency of height measurement of the liquid column and the accuracy of a viscosity measurement result.

The present invention discloses an automatic detection system for comprehensive performance of drilling fluid, including a viscosity measurement system and a water analysis system; the viscosity measurement system includes a waste liquid bucket, a movable plate, a grouting component, a cleaning component and a measuring component, and the water analysis system includes an inner cup taking component, an inner cup recovery component and a filtrate detection component. The purpose of the present invention is to provide an automatic detection system for comprehensive performance of drilling fluid, so as to solve the problems of low automation and labor consumption in the prior art of drilling fluid viscosity and water analysis equipment, and to achieve the purpose of reducing labor intensity and improving the automation of the drilling fluid performance detection process.

The utility model discloses a gas-liquid two-phase flow viscosity measuring device, relates to the technical field of flow viscosity measurement, and solves the technical problem that the existing gas-liquid two-phase flow circulating device interferes with the measuring process, so that the accuracy of a viscosity measuring result is low. The gas-liquid two-phase flow viscosity measuring device comprises a base, a torque sensor, a bracket, a double-cavity container, a rotating component, a first pipeline and a second pipeline, wherein the torque sensor and the bracket are arranged on the base, and the double-cavity container is arranged on the torque sensor through the bottom surface; the rotating assembly is arranged at the top of the double-cavity container through a support extending to the top of the double-cavity container, and any rotating part of the rotating assembly extends into the second annular cavity from the top of the double-cavity container; the first pipeline and the second pipeline penetrate through the bottom surface of the double-cavity container and extend into the first annular cavity from the top of the double-cavity container; a first through hole and a second through hole are formed in the separation face of the first annular cavity and the second annular cavity.

The utility model discloses an integrated measuring instrument for melt viscosity and density. The measuring instrument comprises a vacuum chamber, an oscillation device, a density measuring assembly and a viscosity measuring assembly, wherein the density measuring assembly and the viscosity measuring assembly are arranged in the vacuum chamber; the oscillating device comprises a suspension fiber, a connecting rod and a driving element; two ends of the suspension fiber are respectively connected with the driving element and the density measuring assembly; one end of the connecting rod is hinged with the density measuring assembly, the other end of the connecting rod is fixed with the viscosity measuring assembly, and the density measuring assembly and the viscosity measuring assembly are respectively driven by the suspension wire and the connecting rod to do periodic torsional vibration motion. The density measurement assembly and the viscosity measurement assembly are connected into a whole by arranging the oscillation device, the density of the melt is calculated according to the density measurement assembly, and the viscosity of the melt is calculated according to motion data of the viscosity measurement assembly of the melt. Therefore, the viscosity and density of the melt can be measured at the same time through one device, and the cost and time for measuring the viscosity of the melt are reduced.

The invention relates to the technical field of engine lubricating oil state monitoring, in particular to an intelligent temperature control device for on-line viscosity measurement of engine high-temperature lubricating oil and an on-line viscosity measurement method, and the intelligent temperature control device comprises a module tool installed between an engine oil pump and a main engine oil filter element; the intelligent cooling module comprises a semiconductor chilling plate; the heat dissipation module is thermally coupled with the hot end of the semiconductor chilling plate; the temperature sensor is arranged on the sampling flow path; and the controller is electrically connected with the temperature sensor and the semiconductor chilling plate, and is configured to adjust the current of the TEC through a PID control algorithm according to a feedback signal of the temperature sensor, so that the temperature of the lubricating oil flowing through the temperature sensor is stabilized at a preset target value. According to the invention, the technical bottleneck that an on-line viscosity sensor cannot stably work in a high-temperature environment of 100 DEG C or above is successfully broken through by a composite heat dissipation scheme of integrating a semiconductor chilling plate and an engine coolant system and cooperating with intelligent PID temperature control.

This invention relates to the field of viscosity measurement technology, and more particularly to a viscosity measuring device and method for poly(perfluoroethylene) propylene resin. The device includes a measuring mechanism connected to an external delivery pipeline, used to detect the viscosity of the resin being transported within the pipeline. The measuring mechanism comprises two coaxial and oppositely arranged main pipes and a driven sleeve located between the two main pipes, the driven sleeve being rotatably connected to the two main pipes. This invention effectively solves the drawbacks of traditional sampling and testing methods, facilitating the integration of testing into the production line, enabling real-time testing of continuously produced resin, improving the immediacy of testing, and allowing for rapid adjustment of resin production parameters based on test results. This avoids the production of large amounts of waste due to delayed test results. Furthermore, by employing multiple methods to detect resin viscosity, it facilitates comparison and verification of test data, improving the accuracy and reliability of the testing.

The utility model belongs to the technical field of measuring instruments, and discloses a viscometer which comprises a base, a viscometer main body, a constant-temperature water bath assembly and a lifting base, and the viscometer main body is suspended on the base; the constant-temperature water bath assembly comprises a water bath tank, a heating piece and a temperature measuring piece, the water bath tank is arranged below the viscometer main body, the heating piece is configured to heat the water bath tank, the temperature measuring piece is located above the water bath tank, and the heating piece is in communication connection with the temperature measuring piece; the lifting base is mounted on the base, is connected with the water bath and is configured to drive the water bath to lift. According to the viscometer, the temperature of the sample to be measured can be kept within the preset range, and the accuracy of viscosity measurement is improved.

This invention relates to the field of measuring device technology and discloses an acrylate polymerization viscosity measuring device, including a rotor with a lower chamber and an upper chamber inside, the air pressure values ​​inside the lower and upper chambers being adjustable, and an elastic component disposed at the top of the rotor, the elastic component having an adjustable preload. This invention, by incorporating the elastic component, can buffer the instantaneous torque when the upper shell suddenly drives the rotor to rotate, allowing the rotor to start slowly and preventing the formation of a vacuum region inside the sample during rotor rotation, which would cause gas to precipitate and form bubbles. This ensures the accuracy of the data in the test results. Furthermore, the preload of the arc spring in the elastic component can be adjusted in real time by the increase in sample temperature, allowing the elastic component to be adjusted according to the sample temperature and adaptable to various operating environments.

The invention discloses a viscometer rotor quick-change mechanism, which comprises: a rotating shaft assembly, which comprises an upper rotating shaft and a lower rotating shaft and is used for driving a rotor to rotate synchronously; wherein the upper rotating shaft is matched and connected with the lower rotating shaft, an inner sliding sleeve is mounted in the lower rotating shaft through an inner spring, and a rotor is inserted in the middle of the inner sliding sleeve; an outer spring is installed outside the lower rotating shaft, a limiting piece is installed at one end of the outer spring, an outer taper sleeve is installed at the other end of the outer spring, and a release sleeve sleeves the outer side of the outer taper sleeve. The whole structure is simple, the rotor can be quickly and conveniently disassembled and assembled, and no extra installation tool is needed; and after installation, the concentricity and the vertical alignment height of the rotating shaft and the rotor are ensured, the structure is kept consistent after the rotor is installed each time, and the device is suitable for large-torque and high-rotating-speed viscosity measurement occasions.