CN211235392U - Device for synchronously measuring liquid surface tension and liquid-solid antenna by temperature control - Google Patents
Device for synchronously measuring liquid surface tension and liquid-solid antenna by temperature control Download PDFInfo
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- CN211235392U CN211235392U CN201922044271.8U CN201922044271U CN211235392U CN 211235392 U CN211235392 U CN 211235392U CN 201922044271 U CN201922044271 U CN 201922044271U CN 211235392 U CN211235392 U CN 211235392U
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Abstract
The utility model discloses a device for synchronously measuring liquid surface tension and liquid-rigid connection antenna by temperature control, wherein a liquid containing box to be measured is of a box structure with an open top, the lower part of the liquid containing box to be measured is arranged in a water bath box, a dynamometer is hung on the output end of a driving mechanism, the output end of the driving mechanism can drive the dynamometer to move up and down, a solid hanging piece to be measured is hung at the lower end of the dynamometer, and the solid hanging piece to be measured is positioned above the liquid containing box to be measured; laser radar range scanner sets up in one side that the solid that awaits measuring hung the piece, and laser output end and the liquid that awaits measuring hold case and await measuring liquid surface parallel and level on the laser radar range scanner, and laser radar range scanner can scan contact position when the solid that awaits measuring hangs the piece and the liquid contact that awaits measuring. The utility model has the characteristics of can control test temperature, synchronous survey liquid surface tension and liquid-solid contact angle, simple structure, precision height, good reproducibility, range of application are wide and with low costs.
Description
Technical Field
The utility model belongs to the technical field of the chemical measurement, concretely relates to device of control by temperature change synchronous measurement liquid surface tension and liquid-rigid coupling antenna.
Background
Wetting is a common physical phenomenon, but the degree of wetting of a solid by a liquid is affected by the type, nature and surface condition of the liquid and the solid. In order to characterize the degree of wetting of different liquids to different solids and to explore the wetting mechanism between liquids and solids, the scholars propose the concepts of surface tension and contact angle. The measurement of surface tension and liquid-solid contact angle of different liquids is very important for mastering the characteristics of wettability, adhesiveness, lubricity, diffusivity and the like between the liquid and the solid. According to the characteristics of different wetting degrees between liquid and solid, corresponding processes and products are developed in multiple fields of modern disciplines such as energy, traffic, machinery, civil engineering, chemical engineering, textile, nano-materials, biology, medicine and the like. For example, in mineral flotation, the success of gas bubbles to capture mineral particles depends on the wetting ability of the suspended particles with the liquid environment; in oil exploitation, the displacement fluid drives the oil fluid by utilizing the characteristic that two fluids have different wetting characteristics on a solid wall; developing the surface of a super-hydrophobic nano structure; the study on the blood infiltration capacity of the artificial biomaterial in the biomedical field, and the like.
In the field of highway engineering, the surface energy theory is used for evaluating the adhesion between aggregate and asphalt, which is accepted and advocated by researchers, and the surface tension of liquid and the contact angle between liquid and solid are important parameters in the surface energy theory. Relevant researches show that diseases such as pits, cracks, local subsidence, looseness and the like of the asphalt pavement are related to water damage, the water damage is caused by the fact that water molecules are easier to wet the surface of the aggregate than asphalt molecules, and when the aggregate coated with the asphalt is in a water environment for a long time, the water molecules are contacted and wetted with the aggregate molecules to replace the adhesion of the asphalt. Therefore, the determination of the surface tension of different liquids and the liquid-solid contact angle can effectively judge and evaluate the adhesion force and the surface energy between the liquid and the solid, and further has important engineering significance for selecting more hydrophobic aggregates, more stone-philic asphalt and the like.
At present, there are many methods for measuring the surface tension of a liquid and the contact angle between the liquid and the solid, such as a capillary rise method, a maximum bubble pressure method, a flying ring method, a hanging piece method, a droplet profile method, a droplet weight or droplet volume method, a pull-off method, a surface light scattering method, an electromagnetic suspension method, an oscillation jet method, a capillary wave method, and the like. Among them, the droplet profile method is popular because the principle is simple, the result is intuitive, the method is easy to master, and precise instruments and equipment are sold in the market, but it has the defects of few kinds of measurable liquids, expensive instruments and equipment, high requirements for droplet profile, high requirements for shock resistance level, difficulty in controlling test temperature, incapability of directly measuring surface tension gamma, weakness in measurement of viscous liquid, and the like. For this reason, many patents propose unique improved methods and optimized testing devices based on this method, but most of them also obtain liquid-solid indirect contact angles based on image capturing and post-image processing techniques, and the precision is relatively low. Meanwhile, the patents for researching the surface tension of the liquid and the liquid-solid contact angle based on the hanging piece method are few, and the introduction of an advanced radar or ultrasonic ranging technology is not seen.
The method for measuring the surface tension of the liquid and the liquid-solid indirect antenna based on the hanging piece method has the advantages of simple principle, simplicity and convenience in operation, controllable temperature, suitability for various solutions, convenience in calculating the surface tension gamma, low requirement on external conditions and the like. In the past, the hanging piece method has fewer related instruments, most of the instruments depend on import equipment, and the cost of the equipment is high, so that the advantages of the hanging piece method are completely abandoned. Meanwhile, the liquid-solid indirect contact angle measured by a plurality of devices is still obtained by adopting the technologies of image shooting and post image processing, so that the measurement precision is low, and the time and the labor are extremely wasted.
SUMMERY OF THE UTILITY MODEL
For solving the problems existing in the prior art, the utility model aims to provide a device for synchronously measuring liquid surface tension and liquid-solid fixed contact angle by temperature control, which has simple structure and convenient operation, can synchronously realize the quick and accurate measurement of the gamma value of the surface tension and the accurate measurement of the contact angle between liquid and solid, and does not need to collect images and carry out post-processing on the images.
In order to achieve the above object, the utility model adopts the following technical scheme:
a device for synchronously measuring liquid surface tension and liquid-solid contact angle by temperature control comprises a water bath tank, a liquid containing tank to be measured, a laser radar ranging scanner, a driving mechanism, a dynamometer and a solid hanging piece to be measured, wherein the liquid containing tank to be measured is of a tank body structure with an open top; laser radar range scanner sets up in one side that the solid that awaits measuring hung the piece, and laser output end and the liquid that awaits measuring hold case and await measuring liquid surface parallel and level on the laser radar range scanner, and laser radar range scanner can scan contact position when the solid that awaits measuring hangs the piece and the liquid contact that awaits measuring.
The water bath tank is transparent, an opening is formed in the top surface of the water bath tank, an extension section is arranged on the inner edge of the opening downwards, and the upper end of the liquid containing tank to be measured is connected with the lower end of the extension section in a sealing mode; the water bath tank is equipped with the recess downwards from the top in one side of extension section, laser radar range finder set up in the recess, laser emission end and the extension section of laser radar range finder are perpendicular.
The shape of the solid hanging piece to be detected is a cuboid, two through holes are symmetrically formed in the upper end of the solid hanging piece to be detected, the solid hanging piece to be detected is hung at the lower end of the dynamometer through the two through holes and the thin line, the bottom surface of the solid hanging piece to be detected is in a horizontal state, and a plurality of horizontal marking lines are arranged at the lower end of the solid hanging piece to be detected from top to bottom.
The bottom of the water bath box is provided with a water outlet, and the top of the water bath box is provided with a water inlet; the water bath box is also provided with a temperature control system for controlling the temperature of the liquid in the water bath box.
The temperature control system comprises a heater, a temperature sensor and a temperature controller, wherein the heater and the temperature sensor are arranged in the water bath tank and are respectively used for heating liquid in the water bath tank and measuring the temperature of the liquid in the water bath tank; the heater and the temperature sensor are both connected with the temperature controller.
The driving mechanism comprises a motor capable of rotating forward and backward, a motor controller is connected to the motor, and the dynamometer is connected with an output shaft of the motor through a thin wire.
Laser radar range finding scanner sets up two, and two laser radar range finding scanners set up about the solid hanging piece symmetry that awaits measuring.
The laser radar ranging system further comprises a computer, and the computer is connected with the laser radar ranging scanner.
The dynamometer adopts an electronic digital display dynamometer.
The utility model discloses following beneficial effect has:
the utility model discloses the device of control by temperature change synchronous measurement liquid surface tension and liquid solid contact angle is through setting up the water bath case, temperature when can controlling the measurement to make the liquid temperature that awaits measuring holds in the case remain stable. Because the surface tension of the liquid is different at different temperatures, the contact angle between the liquid and the solid is also influenced, and the method has great engineering significance and practical significance for controlling the measurement of the surface tension and the contact angle at different temperatures. The utility model drives the dynamometer to move up and down through the driving mechanism, and the dynamometer can be used for measuring the surface tension of the solid hanging piece to be measured when the solid hanging piece is contacted with the liquid to be measured; the laser radar range scanner can scan the contact part when the solid hanging piece to be detected contacts with the liquid to be detected, and the liquid-solid indirect contact angle between the solid hanging piece to be detected and the liquid to be detected can be obtained according to the obtained range curve by utilizing the function of the laser radar range scanner that the range curve can be drawn during scanning, and the result of the liquid-solid indirect contact angle is more accurate. It can be seen from the above that the utility model discloses when the surface tension of test liquid, can synchronous measurement liquid-indirect feeler of solid, need not to gather the image and carry out post processing to the image. The problem that no instrument can synchronously test the surface tension and the contact angle at present is solved. Simultaneously the utility model discloses the device of control by temperature change synchronous measurement liquid surface tension and liquid solid contact angle is structural simpler, and the cost is low relatively.
Drawings
FIG. 1 is a schematic front view of the temperature-controlled device for simultaneously measuring liquid surface tension and liquid-solid contact angle according to the present invention;
FIG. 2 is a schematic side view of the temperature-controlled device for simultaneously measuring the surface tension of a liquid and the contact angle of a liquid;
FIG. 3 is a schematic front view of the solid suspension plate to be tested according to the present invention;
fig. 4 is a schematic side view of the solid suspension plate to be tested according to the present invention.
In the figure: 1 is a solid hanging piece to be measured; 1-1 mark line; 2 is a dynamometer; 3 is a thin wire; 4 is the liquid to be measured; 5 is a motor; 6 is a motor controller; 7 is a computer; 8 is a laser radar range scanner; 9 is a box handle; 10 is a power supply; 11 is a temperature controller; 12 is a heater; 13 is a support column; 14 is a liquid containing tank to be measured; 15 is a connecting bolt; 16 is a water bath tank, 16-1 is provided with an opening, 16-2 is provided with an extension section and 16-3 is provided with a groove.
Detailed Description
The technical solution of the present invention will be further described below with reference to the accompanying drawings and the following embodiments, and it should be understood that the accompanying drawings and the following embodiments are only used for illustrating the present invention, and not for limiting the present invention.
The utility model aims at providing a from the method restriction of abolishing liquid drop appearance method, from a brand-new visual angle, make full use of has advanced technology now, the performance hangs piece method advantage, realize the controllable temperature in the 0 ~ 100 ℃ of scope, surface tension gamma value is quick, accurate survey, the accurate survey of contact angle between liquid-solid, and experimental repeatability is good, be suitable for multiple liquid and with low costs equivalent effect, provide a method and device based on the synchronous survey liquid surface tension of control by temperature change of hanging piece method and liquid-solid contact angle, and give corresponding calculation and test method.
Referring to fig. 1 and 2, the device for synchronously measuring liquid surface tension and liquid-solid fixed contact angle by temperature control of the utility model comprises a water bath tank 16, a liquid containing tank 14 to be measured, a laser radar distance measuring scanner 8, a driving mechanism, a dynamometer 2 and a solid hanging piece 1 to be measured, wherein the liquid containing tank 14 to be measured is of a tank structure with an open top, the lower part of the liquid containing tank 14 to be measured is arranged in the water bath tank 16, the dynamometer 2 is hung at the output end of the driving mechanism, the output end of the driving mechanism can drive the dynamometer 2 to move up and down, the solid hanging piece 1 to be measured is hung at the lower end of the dynamometer 2, and the solid hanging piece 1 to be measured is positioned above the liquid containing tank; laser radar range scanner 8 sets up in the one side that the solid that awaits measuring hung piece 1, and laser output end and the liquid that awaits measuring hold 4 surperficial parallel and level of the liquid that await measuring in case 14 on laser radar range scanner 8, and laser radar range scanner 8 can scan the contact position when the solid that awaits measuring hangs piece 1 and the contact of the liquid 4 that awaits measuring.
As the preferred embodiment of the utility model, the water bath box 16 is transparent, the top surface of the water bath box 16 is provided with an opening 16-1, the inner edge of the opening 16-1 is provided with an extension section 16-2 downwards, and the upper end of the liquid holding box 14 to be measured is hermetically connected with the lower end of the extension section 16-2; a groove 16-3 is formed in one side of the extension section 16-2 of the water bath tank 16 from the top to the bottom, the laser radar ranging scanner 8 is arranged in the groove 16-3, and a laser emitting end of the laser radar ranging scanner 8 is perpendicular to the extension section 16-2.
As the utility model discloses preferred embodiment, refer to fig. 3 and 4, the solid that awaits measuring hangs piece 1's shape is the cuboid, and the solid that awaits measuring hangs piece 1's upper end symmetry and has seted up two through-holes, and the solid that awaits measuring hangs piece 1 and hangs in dynamometer 2's lower extreme through two through-holes and fine rule 3, and the solid that awaits measuring hangs piece 1's bottom surface is the horizontality, and the solid that awaits measuring hangs piece 1 lower extreme is from last to being equipped with a plurality of horizontally mark lines down.
As the preferred embodiment of the utility model, the bottom of the water bath box 16 is provided with a water outlet, and the top is provided with a water inlet; the water bath 16 is also provided with a temperature control system for controlling the temperature of the liquid in the water bath 16.
As a preferred embodiment of the present invention, as shown in fig. 1 and 2, the temperature control system includes a heater 12, a temperature sensor and a temperature controller 11, the heater 12 and the temperature sensor are disposed in the water bath tank 16 for heating the liquid in the water bath tank 16 and for measuring the temperature of the liquid in the water bath tank 16, respectively; the heater 12 and the temperature sensor are both connected to the temperature controller 11.
As a preferred embodiment of the present invention, as shown in fig. 1 and 2, the driving mechanism includes a motor 5 capable of rotating forward and backward, a motor controller 6 is connected to the motor 5, and the dynamometer 2 is connected to an output shaft of the motor 5 through a thin wire.
As the utility model discloses preferred embodiment, as shown in fig. 1, laser radar range scanner 8 sets up two, and two laser radar range scanner 8 set up about the solid hanging piece 1 symmetry that awaits measuring.
As the utility model discloses preferred embodiment, the utility model discloses a device of control by temperature change synchronous measurement liquid surface tension and liquid-rigid coupling antenna still includes computer 7, and computer 7 is connected with laser radar range scanner 8, and computer 7 can control laser radar range scanner 8 work to acquire and show the data that laser radar range scanner 8 obtained.
As a preferred embodiment of the present invention, the dynamometer 2 is an electronic digital display dynamometer.
The utility model discloses the method of control by temperature change synchronous measurement liquid surface tension and liquid-rigid coupling antenna, through the utility model discloses a device of control by temperature change synchronous measurement liquid surface tension and liquid-rigid coupling antenna goes on, include following process:
the liquid 4 to be measured in the liquid containing box 14 to be measured reaches the preset temperature;
measuring the weight of the solid hanging piece 1 to be measured;
descending the solid hanging piece 1 to be tested and immersing the solid hanging piece into the liquid 4 to be tested, scanning the contact part of the solid hanging piece 1 to be tested and the liquid 4 to be tested by using a laser radar ranging scanner 8 in the process of contacting the solid hanging piece 1 to be tested and the liquid 4 to be tested, and simultaneously recording the measured value of the dynamometer 2; obtaining an infiltration curve according to the scanning result by the laser radar ranging scanner 8;
and obtaining a contact angle between the liquid to be detected and the solid hanging piece 1 to be detected by using the infiltration curve, and obtaining the surface tension of the liquid to be detected by using the measured value of the dynamometer 2 and the weight and the size of the solid hanging piece 1 to be detected.
The method can synchronously realize the synchronous test of the surface tension of the liquid and the liquid-solid indirect contact angle, does not need to acquire images and carry out post-processing on the images, has simple operation process, and can measure the surface tension of the liquid and the liquid-solid indirect contact angle at different temperatures.
Examples
Referring to fig. 1, the water bath 16 of the apparatus for temperature-controlled simultaneous measurement of liquid surface tension and liquid-solid antenna of the present embodiment is a main bearing structure, and the whole structure of the water bath 16 is made of tempered glass and is transparent. The bottom of the water bath tank 16 is provided with a support column 13, and the outside is provided with a tank body handle 9. 4 support columns 13 are in toughened glass box 16 middle part, and the bottom of support column 13 is connected with the bottom of water bath 16, and the top of support column 13 holds 14 bottoms with the liquid that awaits measuring and is connected, and support column 13 bears the partial weight that the liquid that awaits measuring held case 14, and the liquid that awaits measuring holds case 14 and be copper, and the heat conductivity is good, is favorable to the heating of the liquid 4 that awaits measuring and the stability of temperature. The box body handle 9 is convenient for carrying and moving the whole device; an opening 16-1 is formed in the top surface of the water bath tank 16, an extension section 16-2 is formed in the inner edge of the opening 16-1 in a downward direction, the upper end of the liquid containing tank 14 to be tested is connected with the lower end of the extension section 16-2 through a connecting bolt 15, and the upper end of the liquid containing tank is sealed with the extension section 16-2, so that liquid in the water bath tank 16 is prevented from entering the liquid containing tank 14 to be tested and interfering with a test result; a groove 16-3 is formed in one side of the extension section 16-2 of the water bath tank 16 from the top to the bottom, the laser radar ranging scanner 8 is arranged in the groove 16-3, and a laser emitting end of the laser radar ranging scanner 8 is perpendicular to the extension section 16-2; two laser radar ranging scanners 8 are arranged, and the two laser radar ranging scanners 8 are symmetrically arranged around the solid hanging piece 1 to be detected; the laser radar ranging scanner 8 is connected with the computer 7 through a data line; the driving mechanism comprises a motor 5 capable of rotating forward and backward, a motor controller 6 is connected to the motor 5, and the dynamometer 2 is connected with an output shaft of the motor 5 through a thin wire 3; the water bath tank 16 is provided with a bracket for mounting the motor 5, and the motor 5 is positioned above the liquid containing tank to be measured. The motor controller 6 can control the motor 5 to rotate forward or backward. The thin wire 3 is used for suspending the solid hanging piece 1 to be tested and the dynamometer 2, and the dynamometer 2 is used for reading the tension value of the solid hanging piece 1 to be tested after being immersed in the liquid 4 to be tested; the temperature control system comprises a heater 12, a temperature sensor and a temperature controller 11, wherein the heater 12 and the temperature sensor are arranged in the water bath box 16 and are respectively used for heating the liquid in the water bath box 16 and measuring the temperature of the liquid in the water bath box 16; the heater 12 and the temperature sensor are both connected to the temperature controller 11. The heater 12 extends into the interior of the water bath 16.
It should be noted that the top of the toughened glass box 16 of the water bath box is provided with a liquid inlet, the bottom is provided with a liquid outlet, and during testing, the liquid inlet and the liquid outlet are sealed by rubber plugs; the laser radar range scanner 8 is a main device for measuring the liquid-solid indirect antenna, and has a quick scanning function, when the solid hanging piece 1 to be measured is immersed into the liquid 4 to be measured to 3 marking lines on the liquid, the laser radar range scanners 8 on two sides are simultaneously started to carry out quick scanning; the motor 5 adopts a miniature forward and reverse rotation speed control motor, the motor controller 6 provides power for the motor 5 and controls the opening and closing and forward and reverse rotation of the motor, 2 buttons are arranged on the motor controller 6, 1 button controls the opening and closing of the motor 5, and 1 button controls the forward and reverse rotation of the motor 5 (1 forward rotation is pressed, and then 1 reverse rotation is pressed); the temperature controller 11 can control the heating and heat preservation temperature of the heater 12 according to the temperature information collected by the temperature sensor, an electronic display screen is arranged on the temperature controller 11, and at least 2 buttons (namely an upward temperature regulation button and a downward temperature regulation button) are also arranged on the temperature controller 11, the temperature controller can regulate the temperature of liquid in the water bath tank, the heating or heat preservation can be automatically started according to the set temperature, a power supply connected with the temperature controller is 220V alternating current, and the power supply is provided with a switch to control the electrifying condition.
Wherein, dynamometer 2 adopts the digital display dynamometer, and the liquid that awaits measuring holds case 14 and is made by 1 ~ 2 mm's copper, and the liquid that awaits measuring holds 14 inside distances inboard bottom surface 100mm department and does not influence the mark of radar scanning, and the liquid that awaits measuring can hold liquid such as emulsified asphalt, colour coating, ink in holding case 14 to the liquid that the control is packed into the liquid level of liquid and is in appointed box mark department all the time. The support column 13 is a tempered glass column or a metal column with the diameter of 10mm and the height of 150 mm. The thin wire 3 is a thin soft metal wire with the diameter of 1mm, the length of the thin wire connected to the upper part of the electronic digital dynamometer can be more than 20mm from the electronic digital dynamometer, the length of the thin wire connected to the lower part of the electronic digital dynamometer can control the distance between the bottom surface of the solid hanging piece 1 to be measured and the liquid level to be measured to be at least 2mm, and the thin wire can bear the weight of the electronic digital dynamometer and the solid hanging piece to be measured; the solid hanging piece to be measured is of a cuboid structure, the length, the width and the height are 10mm multiplied by 2mm multiplied by 20mm, 2 round holes with the diameter of 1.5mm are arranged at the position 4mm away from the top surface, the distance between the round holes is 3mm, a thin line penetrates through the round holes and then is connected with a dynamometer to form a stable triangle shape, and 3 marking lines traversing the whole length of the hanging piece are respectively arranged at the positions 1mm, 3mm and 5mm away from the bottom surface of the hanging piece; the electronic digital dynamometer has the functions of displaying the precision of the tension value of at least 0.01N and setting the tension to zero; the solid of the solid hanging piece to be detected can be rock, metal, rubber and other substances. The motor 5 is required to meet the requirement that the thin wire can ascend or descend at the speed of 2 mm/min; the power supply of the motor 5 adopts a direct current rechargeable power supply which can be a 12V or 24V low-voltage power supply. The length and width of the overall dimension of the laser ranging scanner 8 are within 110mm multiplied by 70mm multiplied by 80mm, the minimum measuring range is within 150mm, the single ranging time is within 1ms, the ranging resolution is within 0.5mm, the scanning frequency is above 10Hz, the scanning angle range is adjustable, the angle resolution is less than 1 degree, the temperature of the working environment is above 50 ℃, and if the temperature of the heated liquid is high, heat dissipation measures can be taken. Because the infiltration height of the liquid on the solid is small, the rotation angle of the laser radar ranging scanner 8 is generally within +/-2 degrees and is basically vertical to the extension section 16-2, and the refraction problem of the toughened glass can be not considered. In addition, in order to avoid the influence of the refractive index to a greater extent, the thickness of toughened glass which is just opposite to the laser head of the laser radar range scanner 8 and is slightly larger than the size range (such as 10mm multiplied by 10mm) of the laser head can be thinned to about 1mm, the thinning needs to be started from one side of the laser radar range scanner, and the inner wall of the liquid tank to be measured needs to be ensured to be smooth. If the influence of the glass refractive index is to be completely avoided, holes can be drilled in the toughened glass opposite to the laser head, the size of each hole needs to be slightly larger than the size range (such as 10mm multiplied by 10mm) of the laser head, and a transparent thin plastic film is adhered or arranged.
The method for measuring the surface tension of the liquid and the liquid-solid contact angle by using the device for synchronously measuring the surface tension of the liquid and the liquid-solid contact angle by temperature control of the embodiment comprises the following steps:
1. manufacturing a solid hanging piece 1 to be measured with the size of 10mm multiplied by 2mm multiplied by 20mm, perforating 2 round holes with the diameter of 1.5mm at the position of 4mm on the top surface of the solid hanging piece, wherein the distance between the round holes is 3mm, and the thin piece is required to be prevented from being crushed, otherwise, manufacturing the solid hanging piece again, penetrating a thin wire 3, hanging the solid hanging piece on an electronic digital display dynamometer (the numerical value of the dynamometer is set to zero before hanging, and the electronic digital display dynamometer can adopt an Aipu brand NK/SF type digital display push-pull dynamometer), ensuring that the lower part of the thin wire 3 is triangular when the thin wire 3 is hung, and the bottom surface and the side surface of the solid hanging piece 1 to be measured;
2. opening a liquid inlet hole in the top of the water bath tank 16, adding water to the bottom of a groove where the laser radar ranging scanner 8 is located, adding the liquid 4 to be measured to a mark position 100mm away from the bottom surface of the inner side in the liquid containing tank 14 to be measured, and when the liquid 4 to be measured is added and approaches the mark, applying a rubber head dropper to perform titration;
3. debugging the running state of a motor 5 (a direct current micro low-speed forward and reverse rotation speed-adjustable motor of Zhengke brand ZGB37RG model) and the working state of a motor controller 6 to ensure the accurate control of a button of the motor controller 6, if the motor controller runs well, suspending the bottom surface of a solid suspension piece 1 to be tested at a position 2mm away from the liquid level 4 of liquid to be tested, and enabling the motor 5 to be in a power-on state, otherwise, checking is needed to solve the existing problems, ensure the requirements to be met, and then testing;
4. debugging the working conditions of a computer 7 and laser radar ranging scanners 8 (a Silan brand LIDAR laser A1 type radar 360-degree scanning ranging ROS robot slam with a control drawing function) at two sides of a solid hanging piece 1 to be tested, drawing the same ranging curve when the same ranging curve is drawn, proving that the ranging curve runs well, otherwise, finding out the reason, solving the problem until the requirement is met, and enabling the two to be in a power-on state to be tested and controlled;
5. debugging a heater 12, a temperature controller 11 (Keyu brand KEYU-QIAN model temperature control type 304 stainless steel heating rod) and an alternating current power supply 10 to ensure that the heater 12 can work normally, the temperature controller 11 can well set the temperature, automatically starting a heating or heat preservation system, the alternating current power supply 10 adopts 220V alternating current and is provided with a switch for controlling the electrifying condition, otherwise finding out the reason, solving the problem until the requirement is met, then setting the test temperature, and starting the heater 12 to heat;
6. measuring the temperature of liquid 4 to be measured by an infrared temperature measuring gun (Hima brand AS model infrared hand-held temperature measuring gun), starting a motor 5 after the temperature reaches a standard temperature, descending a solid hanging piece 1 to be measured, starting a laser radar ranging scanner 8 for scanning when the liquid level of the liquid 4 to be measured reaches 3 marking lines of the solid hanging piece 1 to be measured, drawing a soaking curve on a computer, reading and recording the reading of an electronic digital display dynamometer 2, pressing a reversing button of a motor controller 6 after the 3 marking lines are measured, and stopping measuring again when quitting, closing a power supply of the motor and stopping heating;
7. calculating the contact angle theta of the liquid and the solid by using the infiltration curves drawn by the two laser radar ranging scanners 8;
8. when the surface tension of the liquid is tested, the surface tension value is calculated by utilizing the read gravity value G of the solid hanging piece 1 to be tested, the tensile force value of the electronic digital display dynamometer, the size of the solid hanging piece 1 to be tested and the depth of the solid hanging piece 1 to be tested immersed in the liquid to be tested.
The utility model has the advantages as follows:
1. the temperature at the time of measurement can be controlled. The surface tension of the liquid is different at different temperatures, the contact angle between the liquid and the solid is influenced, and the measurement of the surface tension and the contact angle at different temperatures can be controlled, so that the engineering significance and the practical significance are realized;
2. the surface tension of the liquid and the liquid-solid indirect antenna can be synchronously tested. At present, few instruments can synchronously test the surface tension and the contact angle, and a small part of instruments which can synchronously test the surface tension and the contact angle are expensive;
3. the device is designed by a hanging piece method with various advantages. The hanging piece method has the advantages of simple principle, simple and convenient operation, controllable temperature, suitability for various solutions, convenience for calculating surface tension gamma, low requirement on external conditions and the like, most of the conventional testing instruments rely on a liquid drop shape method, and the number of the instruments relying on the hanging piece method is small;
4. the application range is wide. The method can accurately measure the surface tension of various liquids, such as emulsified asphalt, color paint, ink and other liquids, can accurately measure the contact angles between various liquids and various solids, and can measure the types of the solids, such as rocks, metals, rubber and other substances;
5. the measurement precision is higher. The electronic digital dynamometer should have the displayed tension value precision of at least 0.01N, the calculated surface tension precision of 0.01N/m, the ranging resolution of a laser radar ranging scanner within 0.5mm, and the calculated contact angle error of 0.1 degree.
6. The measuring stability is high, the repeatability is good, the measuring speed is high, the principle and the structure are simple, the grasping is easy, the cost is low, and the manufacturing cost can be basically controlled within 2000 yuan.
The above mentioned is only the preferred embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.
Claims (9)
1. The device for synchronously measuring the liquid surface tension and the liquid-fixed antenna by temperature control is characterized by comprising a water bath tank (16), a liquid containing tank (14) to be measured, a laser radar range scanner (8), a driving mechanism, a dynamometer (2) and a solid hanging piece (1) to be measured, wherein the liquid containing tank (14) to be measured is of a tank body structure with an open top, the lower part of the liquid containing tank (14) to be measured is arranged in the water bath tank (16), the dynamometer (2) is hung at the output end of the driving mechanism, the output end of the driving mechanism can drive the dynamometer (2) to move up and down, the solid hanging piece (1) to be measured is hung at the lower end of the dynamometer (2), and the solid hanging piece (1) to be measured is positioned above the liquid containing tank (14) to be measured; laser radar range scanner (8) set up in the one side that the solid hung piece (1) awaits measuring, and laser output end and the liquid that awaits measuring hold liquid (4) surface parallel and level in case (14) on laser radar range scanner (8), and laser radar range scanner (8) can be hung piece (1) and the contact position of awaiting measuring when the contact of the liquid (4) of awaiting measuring at the solid that awaits measuring and scan.
2. The device for synchronously measuring the surface tension of the liquid and the liquid-solid antenna under the condition of temperature control according to claim 1, is characterized in that the water bath tank (16) is transparent, the top surface of the water bath tank (16) is provided with an opening (16-1), the inner edge of the opening (16-1) is downwards provided with an extension section (16-2), and the upper end of the liquid containing tank (14) to be measured is hermetically connected with the lower end of the extension section (16-2); a groove (16-3) is formed in one side of the extending section (16-2) of the water bath tank (16) from the top to the bottom, the laser radar ranging scanner (8) is arranged in the groove (16-3), and a laser emitting end of the laser radar ranging scanner (8) is perpendicular to the extending section (16-2).
3. The device for synchronously measuring the liquid surface tension and the liquid-solid antenna by temperature control according to claim 1, is characterized in that the solid hanging piece (1) to be measured is in a cuboid shape, two through holes are symmetrically formed in the upper end of the solid hanging piece (1) to be measured, the solid hanging piece (1) to be measured is hung at the lower end of the dynamometer (2) through the two through holes and the thin line (3), the bottom surface of the solid hanging piece (1) to be measured is in a horizontal state, and a plurality of horizontal marking lines are arranged at the lower end of the solid hanging piece (1) to be measured from top to bottom.
4. The device for synchronously measuring the surface tension of the liquid and the liquid-solid antenna under the condition of temperature control as claimed in claim 1, wherein the bottom of the water bath tank (16) is provided with a water outlet, and the top is provided with a water inlet; the water bath tank (16) is also provided with a temperature control system for controlling the temperature of the liquid in the water bath tank (16).
5. The device for synchronously measuring the surface tension of the liquid and the liquid-solid antenna by temperature control as claimed in claim 4, wherein the temperature control system comprises a heater (12), a temperature sensor and a temperature controller (11), the heater (12) and the temperature sensor are arranged in the water bath tank (16) and are respectively used for heating the liquid in the water bath tank (16) and measuring the temperature of the liquid in the water bath tank (16); the heater (12) and the temperature sensor are both connected with the temperature controller (11).
6. The device for synchronously measuring the surface tension of the liquid and the liquid-solid antenna by temperature control as claimed in claim 1, characterized in that the driving mechanism comprises a motor (5) capable of rotating forwards and backwards, a motor controller (6) is connected to the motor (5), and the dynamometer (2) is connected with an output shaft of the motor (5) through a thin wire.
7. The device for synchronously measuring the surface tension of the liquid and the liquid-solid antenna by temperature control as claimed in claim 1, characterized in that two laser radar range scanners (8) are provided, and the two laser radar range scanners (8) are symmetrically arranged around the solid suspension piece (1) to be measured.
8. The device for synchronously measuring the surface tension of the liquid and the liquid-solid antenna by temperature control according to claim 1, characterized by further comprising a computer (7), wherein the computer (7) is connected with a laser radar range scanner (8).
9. The device for synchronously measuring the surface tension of the liquid and the liquid-solid contact angle by temperature control as claimed in claim 1, characterized in that the dynamometer (2) is an electronic digital display dynamometer.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113740227A (en) * | 2021-08-26 | 2021-12-03 | 中国科学院西北生态环境资源研究院 | Survey device that soil macroporosity flows |
| CN116008129A (en) * | 2023-03-28 | 2023-04-25 | 叙镇铁路有限责任公司 | Negative pressure detection device in water distribution is divided to cement-based material surface hydrophobe |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113740227A (en) * | 2021-08-26 | 2021-12-03 | 中国科学院西北生态环境资源研究院 | Survey device that soil macroporosity flows |
| CN116008129A (en) * | 2023-03-28 | 2023-04-25 | 叙镇铁路有限责任公司 | Negative pressure detection device in water distribution is divided to cement-based material surface hydrophobe |
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