Liquid bridge forming device for liquid bridge measurement and working method

Abstract

The invention discloses a liquid bridge forming device for liquid bridge measurement and a working method, and belongs to the technical field of liquid bridge forming. The first forming module comprises a first motor, a first rod body and a first ball body; the axis of the first rod body is horizontally distributed; one end of the first rod body is in mechanical transmission connection with the first motor, and the other end is connected with the first sphere; the second forming module comprises a second motor, a second rod body and a second ball body; the second rod body and the first rod body are on the same straight line; one end of the second rod body is in mechanical transmission connection with the output end of the second motor, and the other end of the second rod body is connected with a second ball close to the first ball; the first ball and the second ball rotate in opposite directions. According to the invention, uniform coating of the sphere can be realized, and the formation process of the liquid bridge can be better simulated and observed.

Description

Technical Field

[0001] The present invention belongs to the technical field of liquid bridge formation, and in particular relates to a liquid bridge forming device and a working method for liquid bridge measurement. Background Art

[0002] Wet particle flow is widely used in the fields of energy, pharmaceutical and food industries. However, due to the viscosity effect, evaporation or condensation, capillary force and uneven distribution of liquid in wet particle flow, the liquid transport process of wet particle flow is very complicated, and complex flow behavior usually occurs, resulting in liquid bridges between particles, which may cause particle agglomeration. Therefore, in-depth research on the flow characteristics and mechanism of wet particle flow can not only better understand the formation process of liquid bridges, optimize reactor design and operating parameters, and improve heat and mass transfer efficiency, but also help develop new particle processing technologies and equipment, reduce energy consumption and production costs, and promote technological progress and industrial upgrading in related industries.

[0003] However, previous studies on wet granular flow have mainly focused on theoretical research on liquid bridge formation, quantitative analysis of the effects of factors such as liquid volume, surface tension, viscosity on the shape and rupture distance of the liquid bridge, and the derivation of theoretical formulas. As a result, there are few studies on the initial formation process of the liquid bridge and the accompanying liquid transfer from the particle surface to the liquid bridge.

[0004] Even though there are research devices on liquid bridges in the prior art, such as patent publication number CN112986059A, which discloses a static and dynamic liquid bridge observation system and method between two balls, it only covers the balls locally, focuses on simultaneously achieving accurate measurement of static and dynamic liquid bridge forces, records the morphological changes of the liquid bridge during the tensile fracture process, and realizes research on the hysteresis characteristics and stability of the liquid bridge. It does not involve the initial formation process of the liquid bridge, and the formation process of the liquid bridge cannot be observed intuitively. There are still very few devices for the initial formation of the liquid bridge. Summary of the invention

[0005] The present invention provides a liquid bridge forming device and a working method for liquid bridge measurement to solve the technical problems mentioned in the background technology.

[0006] To achieve the above objectives, the present invention adopts the following technical solutions:

[0007] A liquid bridge forming device for liquid bridge measurement, comprising a first forming module, including a first motor, a first rod and a first sphere; the axis of the first rod is horizontally distributed; one end of the first rod is mechanically connected to the first motor, and the other end is connected to the first sphere; a second forming module, comprising a second motor, a second rod and a second sphere; the second rod and the first rod are on the same straight line; one end of the second rod is mechanically connected to the output end of the second motor, and the other end is connected to the second sphere, and the second sphere is close to the first sphere; the first sphere and the second sphere rotate in opposite directions.

[0008] As a further improvement of the technical solution, a liquid bridge forming device for liquid bridge measurement of the present invention also includes a control system; the control system is connected to the first motor and the second motor circuit.

[0009] As a further improvement of the technical solution, the first forming module also includes a first linear moving mechanism; the first linear moving mechanism is horizontally arranged; the first linear moving mechanism is provided with a movable end, and the movable end performs linear motion in the horizontal direction; the movable end of the first linear moving mechanism is connected to the first motor, driving the first motor and the first rod body to move.

[0010] As a further improvement of the technical solution, the first linear motion mechanism is a lead screw linear slide mechanism; the first linear motion mechanism is connected to the control system circuit.

[0011] As a further improvement of the technical solution, the first linear motion mechanism includes a moving motor, a seat body, a reducer, a baffle, a lead screw, a support seat and a slide rail; the slide rail is arranged on the top surface of the seat body; the baffles are vertically arranged at both ends of the seat body; the lead screw is rotatably arranged on the baffle; one end of the reducer is connected to the baffle and is also transmission-connected to the lead screw to drive the lead screw to rotate; the end of the reducer away from the lead screw is connected to the output end of the moving motor; the bottom of the support seat is slidably connected to the slide rail, the middle is threadedly connected to the lead screw, and the top is connected to the first motor.

[0012] As a further improvement of the technical solution, the first forming module also includes a support platform; the first linear moving mechanism is arranged on the top surface of the support platform.

[0013] As a further improvement of the technical solution, the second forming module also includes a horizontal moving platform; the second motor is arranged on the top surface of the horizontal moving platform.

[0014] As a further improvement of the technical solution, the horizontally movable platform includes a first-direction moving mechanism that moves along the length direction of the first rod body; the first-direction moving mechanism includes a first base, a first screw, a first slider and a first connecting plate; the first base is horizontally arranged, and a first slot is provided on its top surface, and the length direction of the first slot is consistent with the length direction of the first rod body; the first slider is slidably connected to the first base through the first slot; one end of the first screw is rotatably connected to the first slider, and the other end of the first screw is threadedly connected to one end of the first base, driving the first slider to slide along the length direction of the first slot; one side of the first connecting plate is connected to the top surface of the first slider, and the other side is connected to the second motor.

[0015] As a further improvement of the technical solution, the horizontal moving platform also includes a second direction moving mechanism that moves horizontally and perpendicularly to the length direction of the first rod body; the second direction moving mechanism has the same structure as the first direction moving mechanism, including a second base, a second screw, a second slider and a second connecting plate; the second direction moving mechanism is located directly below the first direction moving mechanism; the second base is horizontally arranged, and a second slide groove is provided on its top surface, and the length direction of the second slide groove is horizontal to the length direction of the first rod body; the top surface of the second connecting plate is connected to the bottom surface of the first base.

[0016] As a further improvement of the technical solution, the second forming module also includes a lifting platform; the top surface of the lifting platform is connected to the bottom surface of the horizontal moving platform.

[0017] As a further improvement of the technical solution, the lifting platform is a scissors lifting platform.

[0018] The present application also provides a working method of a liquid bridge forming device for liquid bridge measurement, comprising the following steps:

[0019] Step 1: adjusting the positions of the first sphere and the second sphere so that the first sphere and the second sphere are in contact with each other and the distance between the first sphere and the second sphere is 0 mm;

[0020] Step 2: adjusting the positions of the first sphere and the second sphere, increasing the distance between the first sphere and the second sphere, so that there is a gap between the first sphere and the second sphere, and the gap is greater than the thickness of the liquid film;

[0021] Step 3: synchronously start the first motor and the second motor, the first motor and the second motor rotate in opposite directions, the first motor and the second motor respectively drive the first sphere and the second sphere to rotate, so that the first sphere and the second sphere rotate in opposite directions;

[0022] Step 4: pipetting the first sphere and the second sphere respectively, so that the liquid is evenly coated on the first sphere and the second sphere;

[0023] Step 5: shorten the distance between the first sphere and the second sphere so that the liquid films on the first sphere and the second sphere contact each other to form a liquid bridge, and then stop moving the first sphere and the second sphere.

[0024] As a further improvement of the technical solution, in step three, the rotation speed of the first motor and the second motor is 50 revolutions per minute.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The present application can achieve uniform coating of the spheres and better simulate the formation process of the observed liquid bridge; during operation, the centers of the first sphere and the second sphere are always in the same straight line with the first rod and the second rod respectively, and then the first motor and / or the second motor are moved to adjust the position between the first sphere and the second sphere so that the first sphere and the second sphere are in contact, at which time the distance between the first sphere and the second sphere is recorded as 0 mm, and then the first motor and / or the second motor are moved again to adjust the position of the first sphere and the second sphere, and the distance between the first sphere and the second sphere is increased so that there is a gap between the first sphere and the second sphere, and then the first motor and the second motor are started synchronously, and the first motor and the second motor respectively drive the first sphere and The second sphere rotates, wherein the rotation directions of the first motor and the second motor are opposite, so that the rotation directions of the first sphere and the second sphere are opposite, and the rotation speeds of the first motor and the second motor are the same. After the first sphere and the second sphere rotate, the spherical surfaces of the first sphere and the second sphere are respectively pipetted by a pipette. Since the first sphere and the second sphere are always rotating, the liquid can be evenly coated on the spherical surface. After the coating is completed, the first motor and / or the second motor is moved, the position of the first sphere and the second sphere is adjusted, and the distance between the first sphere and the second sphere is shortened, so that the liquid films on the first sphere and the second sphere are in contact to form a liquid bridge, and then the positions of the first sphere and the second sphere are fixed to realize the initial formation process of the liquid bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A schematic diagram of a liquid bridge forming device for liquid bridge measurement provided by the present invention Figure 1 ;

[0029] Figure 2 The structure diagram provided by the present invention Figure 2 ;

[0030] Figure 3 The structure diagram provided by the present invention Figure 3 ;

[0031] Figure 4 for Figure 1 A schematic diagram of the structure of the first linear motion mechanism;

[0032] Figure 5 for Figure 1 Schematic diagram of the structure of the medium horizontal mobile platform Figure 1 ;

[0033] Figure 6 for Figure 1 Schematic diagram of the structure of the medium horizontal mobile platform Figure 2 ;

[0034] Figure markings: 1-first forming module, 11-first motor, 12-first rod, 13-first sphere, 14-first linear moving mechanism, 141-moving motor, 142-seat, 143-reducer, 144-baffle, 145-screw, 146-support seat, 147-slide rail, 15-support platform, 2-second forming module, 21-second motor, 22-second rod, 23-second sphere, 24-first direction moving mechanism, 241-first base, 242-first screw, 243-first slider, 244-first connecting plate, 25-second direction moving mechanism, 251-second base, 252-second screw, 253-second slider, 254-second connecting plate, 26-lifting platform. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein should be the common meanings understood by people with ordinary skills in the field to which the present invention belongs.

[0036] The words "first", "second" and similar words used in the specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, unless the context clearly indicates otherwise, the singular form of "a", "an" or "the" and similar words do not indicate a quantitative limitation, but indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before "include" or "comprise" include the features, wholes, steps, operations, elements and / or components listed after "include" or "comprise", and do not exclude the existence or addition of one or more other features, wholes, steps, operations, elements, components and / or their collections. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] Embodiment 1:

[0039] like Figures 1 to 3 As shown, a liquid bridge forming device for liquid bridge measurement includes a first forming module 1 and a second forming module 2; wherein the first forming module 1 includes a first motor 11, a first rod 12 and a first sphere 13; the axis of the first rod 12 is horizontally distributed, and one end of the first rod 12 is mechanically connected to the output end of the first motor 11, and the other end is connected to the first sphere 13, and the first motor 11 drives the first rod 12 and the first sphere 13 to rotate; the second forming module 2 includes a second motor 21, a second rod 22 and a second gas 23; the second The rod body 22 and the first rod body 12 are in the same straight line; one end of the second rod body 22 is mechanically connected to the output end of the second motor 21, and the other end is connected to the second sphere 23; preferably, the output ends of the first motor 11 and the second motor 21 are connected to the first rod body 12 and the second rod body 22 through a coupling respectively; the second sphere 23 is close to the first sphere 13, and the centers of the first sphere 13 and the second sphere 23 are in the same straight line with the first rod body 12 and the second rod body 22 respectively; the first sphere 13 and the second sphere 23 rotate in opposite directions. In addition, it should be noted that the specific models of the first motor and the second motor are not the improvement points of this application, and will not be repeated here.

[0040] Preferably, the present application further includes a control system; the control system is connected to the first motor 11 and the second motor 21 in a circuit, preferably the first motor 11 and the second motor 21 are both stepper motors, and the speed and direction of the first motor 11 and the second motor 21 are controlled by the control system. In addition, it should be noted that the connection method between the control system and the first motor and the second motor is a conventional connection method, and the specific model of the control system is not an improvement point of the present application, and will not be described in detail here.

[0041] Working method:

[0042] Before the first operation, determine that the centers of the first sphere 13 and the second sphere 23 are respectively in the same straight line with the first rod 11 and the second rod 21, so that during the entire operation, the centers of the first sphere 13 and the second sphere 23 are respectively in the same straight line with the first rod 11 and the second rod 21, and then move the first motor 11 and / or the second motor 21 to adjust the position between the first sphere 13 and the second sphere 23 so that the first sphere 13 and the second sphere 23 are in contact. At this time, the distance between the first sphere 13 and the second sphere 23 is recorded as 0 mm. Subsequently, move the first motor 11 and / or the second motor 21 again to adjust the position of the first sphere 13 and the second sphere 23, and increase the distance between the first sphere 13 and the second sphere 23 so that there is a gap between the first sphere 13 and the second sphere 23, and the gap is greater than the liquid film thickness. Optionally, the gap is 8 mm. Then start the first motor 11 and the second motor 21 synchronously. The first motor 11 and the second motor 21 drive the first sphere 13 and the second sphere 23 to rotate respectively, wherein the rotation directions of the first motor 11 and the second motor 21 are opposite, so that the rotation directions of the first sphere 13 and the second sphere 23 are opposite, and the rotation speeds of the first motor 11 and the second motor 21 are the same. After the first sphere 13 and the second sphere 23 rotate, the spherical surfaces of the first sphere 13 and the second sphere 23 are pipetted respectively by a pipette. Since the first sphere 13 and the second sphere 23 are always rotating, the liquid can be evenly coated on the spherical surfaces. After the coating is completed, the first motor 11 and / or the second motor 21 is moved to adjust the positions of the first sphere 13 and the second sphere 23, and shorten the distance between the first sphere 13 and the second sphere 23, so that the liquid films on the first sphere 13 and the second sphere 23 are in contact to form a liquid bridge, and then the positions of the first sphere 13 and the second sphere 23 are fixed to realize the initial formation process of the liquid bridge.

[0043] Preferably, the rotation speed of the first motor 11 and the second motor 21 is 50 rpm. If the rotation speed is greater than 50 rpm, the liquid bridge formed will be deflected. If the rotation speed is less than 50 rpm, the liquid will be evenly coated on the first sphere 13 and the second sphere 23 at a slow speed, which takes a long time.

[0044] Embodiment 2:

[0045] like Figures 1 to 4 As shown, compared with the first embodiment, the difference lies in that the first forming module 1 also includes a first linear motion mechanism 14; the first linear motion mechanism 14 is horizontally arranged; the first linear motion mechanism 14 is provided with a movable end, and the movable end performs linear motion in the horizontal direction, and the linear motion is consistent with the length direction of the first rod body 12; the movable end of the first linear motion mechanism 14 is connected to the first motor 11, driving the first motor 11 and the first rod body 12 to move, thereby adjusting the position of the first sphere 13.

[0046] like Figures 1 to 4 As shown, preferably, the first linear motion mechanism 14 is a screw linear slide mechanism with high precision and fast response speed; the first linear motion mechanism 14 is connected to the control system circuit, and the control system controls the moving direction and distance of the moving end of the first linear motion mechanism 14. In addition, it should be noted that the connection between the first linear motion mechanism and the control system is a conventional connection, which will not be described in detail here.

[0047] like Figures 1 to 4 As shown, the first linear motion mechanism 14 includes a moving motor 141, a seat 142, a reducer 143, a baffle 144, a lead screw 145, a support seat 146 and a slide rail 147; the top surface of the seat 142 is provided with a slide rail 147; baffles 144 are vertically provided at both ends of the seat 142; the lead screw 145 is rotatably provided on the baffle 144; the output end of the reducer 143 is connected to the baffle 144, and is also connected to the lead screw 145 for driving the lead screw 145 to rotate; the end of the reducer 143 away from the lead screw 145 is connected to the output end of the moving motor 141 The input end of the reducer 143 is connected to the output end of the mobile motor 141, the reducer 143 is a planetary reducer, and the mobile motor 141 is connected to the control system circuit; the bottom of the support seat 146 is slidably connected to the slide rail 147, the middle part is threadedly connected to the lead screw 145, and the top is connected to the first motor 11. The support seat 146 moves along the slide rail 147, thereby driving the first motor 11 to move. In addition, by adding the reducer 143, the movement accuracy of the support seat 146 is improved to better control the interval between the first sphere 13 and the second sphere 23. In addition, it should be noted that the connection method between the mobile motor and the control system is a conventional connection, and the specific models of the mobile motor and the reducer are not the improvement points of this application, so they will not be repeated here.

[0048] like Figures 1 to 4 As shown, the first forming module 1 further includes a support platform 15 ; a first linear motion mechanism 14 is disposed on the top surface of the support platform 15 to support the first linear motion mechanism 14 .

[0049] Embodiment three:

[0050] like Figures 1 to 3 As shown, compared with the second embodiment, the difference is that the second forming module 2 also includes a horizontal moving platform; a second motor 21 is arranged on the top surface of the horizontal moving platform to adjust the position of the second motor 21, and then move the position of the second sphere 23, so as to adjust the second sphere 23 and the first sphere 13 to be in the same straight line.

[0051] like Figures 1 to 3 , Figure 5 and Figure 6 As shown, preferably, the horizontal moving platform includes a first direction moving mechanism 24 that moves along the length direction of the first rod body 12; the first direction moving mechanism 24 includes a first base 241, a first screw rod 242, a first slider 243 and a first connecting plate 244; the first base 241 is horizontally arranged, and a first notch is provided on its top surface, and the length direction of the first notch is consistent with the length direction of the first rod body 12; a threaded hole is provided at one end of the first base 241 corresponding to the length direction of the first notch; the first slider 243 is slidably connected to the first base 241 through the first notch, and the first slider 243 moves along the length direction of the first notch. The first slider 243 is rotatably connected to the first screw rod 242 at one end, and the other end is threadedly connected to the threaded hole on one end of the first base 241, driving the first slider 243 to slide along the length direction of the first slot; one side of the first connecting plate 244 is connected to the top surface of the first slider 243, and the other side is connected to the second motor 21; when adjusting, the first screw rod 242 is rotated to adjust the length of the first screw rod 242 extending into the first slot, thereby driving the first slider 243 to slide on the first slot, and then driving the first connecting plate 244 and the second motor 21 to move. The overall structure is simple and easy to operate.

[0052] like Figures 1 to 3 , Figure 5 and Figure 6 As shown, preferably, the horizontal movable platform also includes a second direction movable mechanism 25 that moves horizontally and perpendicularly to the length direction of the first rod body 12; the second direction movable mechanism 25 has the same structure as the first direction movable mechanism 24, including a second base 251, a second screw 252, a second slider 253 and a second connecting plate 254; the second direction movable mechanism 25 is located directly below the first direction movable mechanism 24; the second base 251 is also horizontally arranged, and a second slide groove is provided on its top surface, and the length direction of the second slide groove is horizontal to the length direction of the first rod body 12; the top surface of the second connecting plate 254 is connected to the bottom surface of the first base 241; the second direction movable mechanism 25 is different from the first direction movable mechanism 24 in that the moving directions are different, that is, the first direction and the second direction are perpendicular to each other, and the working principles are the same, so they will not be described in detail here.

[0053] like Figures 1 to 3As shown, preferably, the second forming module 2 also includes a lifting platform 26; the top surface of the lifting platform 26 is connected to the bottom surface of the horizontal moving platform, and the first direction moving mechanism 24 and the second direction moving mechanism 25 are driven up and down by the lifting platform 26 to adjust the first sphere 13 and the second sphere 23 to be in the same horizontal straight line; preferably, the lifting platform 26 is a scissors lifting platform with high adjustment accuracy.

[0054] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A liquid bridge forming device for liquid bridge measurement, characterized in that: include: A first forming module comprises a first motor, a first rod and a first sphere; The axis of the first rod is horizontally distributed; one end of the first rod is mechanically connected to the first motor, and the other end is connected to the first sphere; The second forming module includes a second motor, a second rod and a second sphere; the second rod and the first rod are on the same straight line; one end of the second rod is mechanically connected to the output end of the second motor, and the other end is connected to the second sphere, and the second sphere is close to the first sphere; the first sphere and the second sphere rotate in opposite directions.

2. The liquid bridge forming device for liquid bridge measurement according to claim 1, characterized in that: Also includes: A control system; the control system is connected to the first motor and the second motor circuit.

3. The liquid bridge forming device for liquid bridge measurement according to claim 2, characterized in that: The first forming module also includes a first linear motion mechanism; the first linear motion mechanism is horizontally arranged; the first linear motion mechanism is provided with a movable end, and the movable end performs linear motion in the horizontal direction; the movable end of the first linear motion mechanism is connected to the first motor to drive the first motor and the first rod body to move.

4. The liquid bridge forming device for liquid bridge measurement according to claim 3, characterized in that: The first linear motion mechanism is a lead screw linear slide mechanism; the first linear motion mechanism is connected to the control system circuit.

5. The liquid bridge forming device for liquid bridge measurement according to claim 4, characterized in that: The first linear motion mechanism includes a moving motor, a seat body, a reducer, a baffle, a lead screw, a support seat and a slide rail; the slide rail is arranged on the top surface of the seat body; the baffles are vertically arranged at both ends of the seat body; the lead screw is rotatably arranged on the baffle; one end of the reducer is connected to the baffle and is also transmission-connected to the lead screw to drive the lead screw to rotate; the end of the reducer away from the lead screw is connected to the output end of the moving motor; the bottom of the support seat is slidably connected to the slide rail, the middle is threadedly connected to the lead screw, and the top is connected to the first motor.

6. The liquid bridge forming device for liquid bridge measurement according to any one of claims 1 to 5, characterized in that: The second forming module also includes a horizontal moving platform; the second motor is disposed on the top surface of the horizontal moving platform.

7. The liquid bridge forming device for liquid bridge measurement according to claim 6, characterized in that: The horizontal movable platform includes a first-direction moving mechanism that moves along the length direction of the first rod body; the first-direction moving mechanism includes a first base, a first screw, a first slider and a first connecting plate; the first base is horizontally arranged, and a first slot is provided on its top surface, and the length direction of the first slot is consistent with the length direction of the first rod body; the first slider is slidably connected to the first base through the first slot; one end of the first screw is rotatably connected to the first slider, and the other end of the first screw is threadedly connected to one end of the first base, driving the first slider to slide along the length direction of the first slot; one side of the first connecting plate is connected to the top surface of the first slider, and the other side of the first connecting plate is connected to the second motor.

8. The liquid bridge forming device for liquid bridge measurement according to claim 7, characterized in that: The horizontal movable platform also includes a second direction moving mechanism that moves horizontally and perpendicularly to the length direction of the first rod body; the second direction moving mechanism has the same structure as the first direction moving mechanism, including a second base, a second screw, a second slider and a second connecting plate; the second direction moving mechanism is located directly below the first direction moving mechanism; the second base is horizontally arranged, and a second slide groove is provided on its top surface, and the length direction of the second slide groove is horizontal to the length direction of the first rod body; the top surface of the second connecting plate is connected to the bottom surface of the first base.

9. The liquid bridge forming device for liquid bridge measurement according to claim 6, characterized in that: The second forming module also includes a lifting platform; the top surface of the lifting platform is connected to the bottom surface of the horizontal moving platform.

10. The working method of the liquid bridge forming device for liquid bridge measurement according to claim 1, characterized in that: The following steps are involved: Step 1: adjusting the positions of the first sphere and the second sphere so that the first sphere and the second sphere are in contact with each other and the distance between the first sphere and the second sphere is 0 mm; Step 2: adjusting the positions of the first sphere and the second sphere, increasing the distance between the first sphere and the second sphere, so that there is a gap between the first sphere and the second sphere, and the gap is greater than the thickness of the liquid film; Step 3: synchronously start the first motor and the second motor, the first motor and the second motor rotate in opposite directions, the first motor and the second motor respectively drive the first sphere and the second sphere to rotate, so that the first sphere and the second sphere rotate in opposite directions; Step 4: pipetting the first sphere and the second sphere respectively, so that the liquid is evenly coated on the first sphere and the second sphere; Step 5: shorten the distance between the first sphere and the second sphere so that the liquid films on the first sphere and the second sphere contact each other to form a liquid bridge, and then stop moving the first sphere and the second sphere.

Images