CN220983021U

CN220983021U - Liquid viscosity measurer

Info

Publication number: CN220983021U
Application number: CN202322869098.1U
Authority: CN
Inventors: 陈杰; 左巍; 刘海亮; 任福华; 李林喜
Original assignee: Inner Mongolia University of Technology
Current assignee: Inner Mongolia University of Technology
Priority date: 2023-10-25
Filing date: 2023-10-25
Publication date: 2024-05-17
Anticipated expiration: 2033-10-25

Abstract

The utility model discloses a liquid viscosity measurer, which belongs to the technical field of liquid viscosity measuring equipment and comprises a measuring cylinder and a timer which is started, namely a timer, wherein a stop liquid level is preset on a scale mark of the measuring cylinder, a capillary liquid discharge pipe and a non-contact detection element which can send a stop signal to the timer when the liquid level drops to the stop liquid level are arranged on the measuring cylinder, and the capillary liquid discharge pipe is positioned below the stop liquid level. The non-contact detection element can automatically detect whether the liquid in the measuring cylinder is reduced to the termination liquid level and send the termination signal, and then the timer can automatically stop timing after receiving the termination signal.

Description

Liquid viscosity measurer

Technical Field

The utility model relates to the technical field of liquid viscosity measurement equipment, in particular to a liquid viscosity measurer.

Background

Viscosity refers to the ability of a fluid in a fluid to resist its irreversible change in position and is a measure of the resistance to flow within the fluid. Viscosity measurement is widely applied to industries such as petroleum, chemical industry, textile, national defense, medicine and the like. The principle of the capillary viscosimetry is that when liquid flows in a capillary tube in a state of completely wetting the tube wall at a certain temperature, the kinematic viscosity of the liquid is in direct proportion to the flowing time. According to the principle, when the liquid with known kinematic viscosity is used as a standard in measurement, the liquid is filled into a measuring cylinder with a capillary at the bottom, the time for the liquid in the measuring cylinder to descend from an initial liquid level to a final liquid level is measured, and then the time for the liquid to be measured to descend from the same initial liquid level to the final liquid level is measured, so that the viscosity of the liquid to be measured can be calculated. However, in the measurement process, the human eyes observe whether the liquid level is lowered in place, so that not only is the accuracy difficult to ensure, but also the liquid level is lowered slowly, the measurement process is longer, and the experimenter must turn around, so that the liquid level is ensured not to miss the termination liquid level, the whole process is tedious, and the time of the experimenter to conduct other experiments is delayed.

Disclosure of utility model

The utility model aims to solve the technical problems, and provides the liquid viscosity measurer which can automatically measure whether liquid descends to a final liquid level and automatically stop timing, so that the measurement is accurate, an experimenter is liberated, the experimenter is not required to be kept beside a measuring cylinder, the time utilization rate is improved, and the time cost of the measurer is reduced.

In order to achieve the above object, the present utility model provides the following solutions: the utility model discloses a liquid viscosity measurer, which comprises a measuring cylinder and a timer for starting, namely timing, wherein a termination liquid level is preset on a scale mark of the measuring cylinder, a capillary liquid discharge pipe and a non-contact detection element capable of sending a stop signal to the timer when the liquid level drops to the termination liquid level are arranged on the measuring cylinder, and the capillary liquid discharge pipe is positioned below the termination liquid level.

Preferably, the measuring cylinder is provided with an indication arrow corresponding to the termination liquid level.

Preferably, the timer has a stop alarm function.

Preferably, the non-contact type detection element is a non-contact type liquid level sensor installed on the outer wall of the measuring cylinder, the non-contact type liquid level sensor corresponds to the termination liquid level, and the non-contact type liquid level sensor is electrically connected with the timer.

Preferably, the non-contact liquid level sensor is a photoelectric sensing liquid level sensor or a capacitive non-contact liquid level sensor.

Preferably, the non-contact type detection element comprises a controller and a non-contact type liquid level distance meter arranged at the top of the measuring cylinder, a distance measuring head of the non-contact type liquid level distance meter faces to the cylinder bottom of the measuring cylinder vertically, and the non-contact type liquid level distance meter is electrically connected with the timer through the controller.

Preferably, the non-contact liquid level distance meter is an ultrasonic distance meter.

Compared with the prior art, the utility model has the following technical effects:

in the liquid viscosity measurer, whether the liquid in the measuring cylinder is reduced to the stop liquid level or not and a stop signal is sent out can be automatically detected through the non-contact detection element, and then the timer can automatically stop timing after receiving the stop signal.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a perspective view of a liquid viscosity measurer (provided with a non-contact liquid level sensor);

FIG. 2 is a diagram showing an initial state of measurement of a liquid viscosity measurer (provided with a non-contact liquid level sensor);

FIG. 3 is a diagram showing the end of measurement of the liquid viscosity measurer (provided with a non-contact liquid level sensor);

FIG. 4 is a perspective view of a liquid viscosity measurer (provided with a non-contact liquid level range finder);

FIG. 5 is a diagram showing an initial state of measurement of a liquid viscosity measurer (provided with a non-contact liquid level distance measurer);

Fig. 6 is a measurement end state diagram of the liquid viscosity measurer (provided with a non-contact liquid level distance meter).

Reference numerals illustrate: 1. a measuring cylinder; 2. a timer; 3. a capillary drain; 4. a non-contact liquid level sensor; 5. a non-contact liquid level distance meter; 6. an electric wire; 7. an indication arrow; 8. a liquid surface.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The present embodiment provides a liquid viscosity measurer, as shown in fig. 1 to 6, comprising a measuring cylinder 1 and a timer 2, wherein the timer 2 is a timing device which starts timing after being started. The scale mark of the measuring cylinder 1 is pre-provided with a termination liquid level, and the termination liquid level is specifically selected according to the needs. The measuring cylinder 1 is provided with a capillary liquid discharge pipe 3 and a non-contact detection element, the capillary liquid discharge pipe 3 is positioned below the stop liquid level, the non-contact detection element can automatically detect whether the liquid in the measuring cylinder 1 drops to the stop liquid level, and sends a stop signal to the timer 2 when the liquid drops to the stop liquid level, and the timer 2 can automatically stop timing after receiving the stop signal. The automatic processing of liquid level detection and timing stop ensures that the measurement accuracy is obviously improved, and the test staff is liberated, so that the test staff does not need to keep beside the measuring cylinder 1 all the time and observe the liquid descending condition in the measuring cylinder 1 all the time, and can get rid of other things, and can do other experiments at the same time, thereby reducing the time cost of the test staff.

Working principle:

First, the capillary drain 3 is closed or plugged; then pouring liquid with known viscosity into the measuring cylinder 1, wherein the poured liquid level is required to be higher than the end liquid level, for example, when the end liquid level is 50ml, the initial liquid level 8 of the poured liquid is required to be more than 50ml, for example, 80ml, referring to fig. 2 and 5, and of course, the values are all reference values; then, the capillary liquid discharge pipe 3 is opened or unblocked, the timer 2 is started at the same time, when the liquid level 8 is lowered to a final liquid level (for example, when the liquid level is lowered to 50 ml), the non-contact detection element can send a stop signal, and when the timer 2 receives the stop signal, the timer automatically stops timing, so that the lowering time of the liquid from the initial liquid level to the final liquid level is obtained; then, closing or plugging the capillary liquid discharge pipe 3 again, resetting the timer 2, pouring the liquid with the viscosity to be measured into the measuring cylinder 1, and repeating the measuring process to obtain the descending time of the liquid to be measured from the initial liquid level to the final liquid level, wherein the poured liquid level is identical to the previous liquid level, namely the initial liquid level is identical twice; finally, obtaining the relation ratio of the falling time of the liquid with known viscosity and the falling time of the liquid to be detected, and obtaining the viscosity of the liquid to be detected according to the viscosity of the liquid with known viscosity.

The specific calculation mode is as follows: calculating the ratio of the falling time of the liquid with known viscosity to the falling time of the liquid to be detected, and dividing the viscosity value of the liquid with known viscosity by the ratio to obtain the viscosity of the liquid to be detected. Or calculating the falling time of the liquid to be measured and the falling time of the liquid with known viscosity, and multiplying the viscosity of the liquid with known viscosity by the ratio to obtain the viscosity of the liquid to be measured.

In order to visually observe where the end liquid level is, in this embodiment, as shown in fig. 1 to 6, an indication arrow 7 corresponding to the end liquid level may be marked on the measuring cylinder 1, so that visual observation is facilitated. It is of course entirely possible to indicate that arrow 7 is not marked, as long as the end level value is remembered as well.

In the present embodiment, as shown in fig. 1 to 6, the timer 2 has a stop alarm function. Namely, when the timer 2 stops counting, an alarm signal can be automatically sent out to prompt the experimenter that the liquid level is reduced to the final liquid level, so that the experimenter can perform the next work in time. The alarm signals comprise, but are not limited to, alarm sound, alarm light and remote alarm signals, and the alarm modes can be selected or set simultaneously. The alarm sound has the advantages that the experimenter does not need to watch nearby the measuring cylinder 1 at any time, the experimenter can watch the alarm sound at the same room or can not watch the same room but can hear the alarm sound, the remote alarm signal can enable the experimenter to get farther away, the remote alarm signal is received in a specific receiving mode, firstly, an additional receiver can be made, the receiver receives the remote alarm signal, and the experimenter can vibrate, make a sound or both, so that the experimenter can know whether the timer 2 is terminated or not at a distance by only holding the experimenter or the receiver of the device; secondly, an APP can be adapted to the mobile phone, the remote alarm signal is network information, and after the APP receives the remote network information, the mobile phone can vibrate, ring or both.

In this embodiment, the non-contact detecting element is a non-contact liquid level sensor 4. The non-contact liquid level sensor 4 is arranged on the outer wall of the measuring cylinder 1 and corresponds to the end liquid level, i.e. the sensing part of the non-contact liquid level sensor 4 corresponds to the end liquid level or the position of the indication arrow 7. When the level of the liquid drops to the end level or at the point of the indication arrow 7, the sensing part of the non-contact level sensor 4 can sense, and thus a stop signal is emitted. The non-contact liquid level sensor 4 is electrically connected with the timer 2, and the electrical connection can be a remote signal connection, for example, a remote signal generator is arranged on the non-contact liquid level sensor 4, a remote signal receiver is arranged on the timer 2, and the remote signal receiver transmits signals to a processor of the timer 2, so that the timing of the timer 2 can be stopped. It is also possible to use a connection of the wire 6, the stop signal being transmitted by the wire 6 to the processor of the timer 2.

In the present embodiment, as shown in fig. 1 to 6, the noncontact liquid level sensor 4 employs a photo-electric liquid level sensor or a capacitive noncontact liquid level sensor. The photo-inductance liquid level sensor mainly uses the principle that light generates reflection and refraction at interfaces of two different media. The capacitive non-contact liquid level sensor is mainly a dielectric-changing capacitor with capacitance change caused by the change of the measured dielectric surface.

Because the non-contact liquid level sensor 4 can only be installed in a certain fixed position on the measuring cylinder 1 in advance, the position of the non-contact liquid level sensor 4 cannot be changed in the later period, so that the termination liquid level can only be at a single position, the later period cannot be changed, and the measurement mode is not flexible enough, and in order to ensure that the measurement mode is more flexible, in the embodiment, as shown in fig. 1 to 6, the non-contact detection element comprises a non-contact liquid level range finder 5 and a controller, the non-contact liquid level range finder 5 is installed at the top of the measuring cylinder 1, the distance measuring head of the non-contact liquid level range finder 5 faces the cylinder bottom of the measuring cylinder 1 vertically, and the non-contact liquid level range finder 5 is electrically connected with the timer 2 through the controller. The non-contact liquid level distance meter 5 is adopted without being limited by a fixed termination liquid level, because the non-contact liquid level distance meter 5 measures the falling distance of the liquid level, and the timer 2 can be automatically stopped when the liquid level falls by a falling height preset for the non-contact liquid level distance meter 5, so that the termination liquid level is not important, and certainly, the non-contact liquid level distance meter 5 cannot preset the termination liquid level. The specific principle is as follows: the non-contact liquid level distance meter 5 monitors the liquid level descending condition in the measuring cylinder 1 in real time, transmits a monitoring signal to the controller, the controller processes information, and when the controller finds that the liquid level descending distance reaches the preset descending distance, the controller sends a stop signal to the timer 2, and the timer 2 automatically stops timing. The electric connection mode of the controller and the timer 2 is still two modes, firstly, the remote signal connection is realized, the remote signal generator is arranged on the controller, the remote signal receiver is arranged on the timer 2, and the remote signal receiver transmits signals to the processor of the timer 2, so that the timing of the timer 2 can be stopped. And secondly, a wire 6 connection mode is adopted, and a stop signal sent by the controller is transmitted to a processor of the timer 2 through the wire 6.

Further, in the present embodiment, as shown in fig. 1 to 6, the noncontact liquid level meter 5 is an ultrasonic distance meter.

The principles and embodiments of the present utility model have been described with reference to specific examples, which are provided herein to assist in understanding the methods and core ideas of the present utility model; also, it is within the scope of the present utility model to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the utility model.

Claims

1. The liquid viscosity measurer is characterized by comprising a measuring cylinder and a timer for starting, namely timing, wherein a termination liquid level is preset on a scale mark of the measuring cylinder, and the measuring cylinder is provided with a capillary liquid discharge pipe and a non-contact detection element capable of sending a stop signal to the timer when the liquid level drops to the termination liquid level, and the capillary liquid discharge pipe is positioned below the termination liquid level.

2. A liquid viscosity measurer according to claim 1, wherein the measuring cylinder is provided with an indication arrow corresponding to the end liquid level.

3. A liquid viscosity measurer according to claim 2, wherein the timer has a stop alarm function.

4. A liquid viscosity measurer according to any one of claims 1-3, wherein the non-contact detecting element is a non-contact liquid level sensor mounted on an outer wall of the measuring cylinder, the non-contact liquid level sensor corresponding to the end liquid level, the non-contact liquid level sensor being electrically connected to the timer.

5. The liquid viscosity measurer according to claim 4, wherein the non-contact liquid level sensor is a photo sensor liquid level sensor or a capacitive non-contact liquid level sensor.

6. A liquid viscosity measurer according to any one of claims 1-3, wherein the non-contact detection element comprises a controller and a non-contact liquid level distance meter mounted on the top of the measuring cylinder, the distance measuring head of the non-contact liquid level distance meter facing vertically to the cylinder bottom of the measuring cylinder, and the non-contact liquid level distance meter is electrically connected with the timer through the controller.

7. The liquid viscosity measurer according to claim 6, wherein the non-contact liquid level distance measuring device is an ultrasonic distance measuring device.