CN118010568A

CN118010568A - Miniature automatic portable contact angle testing instrument

Info

Publication number: CN118010568A
Application number: CN202410421657.9A
Authority: CN
Inventors: 冼健威; 李南杰; 莫小买; 刘锋
Original assignee: Dongguan Sindin Precision Instrument Co ltd
Current assignee: Dongguan Sindin Precision Instrument Co ltd
Priority date: 2024-04-09
Filing date: 2024-04-09
Publication date: 2024-05-10

Abstract

The invention provides a miniature automatic portable contact angle testing instrument, and belongs to the technical field of contact angle detection. The miniature automatic portable contact angle testing instrument comprises a shell, an imaging acquisition structure, a liquid storage tank, an injection structure and an LED light source, wherein the imaging acquisition structure, the liquid storage tank, the injection structure and the LED light source are arranged in the shell, four corners of the shell are respectively provided with a roller capable of lifting, the rollers extend out of the bottom end of the shell when located at the lowest position, the rollers are stored in the shell when located at the highest position, tooth grooves are formed in the middle of the rollers, gear sets are meshed on the tooth grooves, the output side of the gear sets is connected with a dial, the rollers drive the dial to rotate when rolling on a sample, a pointer for judging the rolling distance is arranged on the shell, and the tip of the pointer points to the center of the dial. The invention has the advantages of high precision of the multi-point wettability detection of the sample, good moving effect of the test instrument and high precision.

Description

Miniature automatic portable contact angle testing instrument

Technical Field

The invention relates to the technical field of contact angle detection, in particular to a miniature automatic portable contact angle testing instrument.

Background

At present, in actual detection, the characteristics of the sample surface, such as chemical composition, microstructure, roughness and the like, can be more comprehensively known by measuring contact angles of different positions of the sample. These properties have an important influence on the wettability of the liquid and the size of the contact angle. In summary, measuring contact angles at different locations of a sample helps to evaluate wettability, surface energy, and surface properties of a material, providing basis for material selection, surface modification, and quality control. At the same time, it also helps to understand the interactions between the material and the liquid or gas and provides guidance for practical use.

For example, patent application number 2023102783541 discloses a portable contact angle measuring apparatu, including the casing and be located the base of casing bottom, the top of base is equipped with the reservoir, one side in the casing is equipped with the camera, the bottom of camera is equipped with spring one, the bottom of spring one is equipped with the spring fixed block, the bottom of spring fixed block is equipped with spring two, the bottom of spring two is equipped with the prism, the top of casing is equipped with the test knob, one side in the casing is equipped with the slide rail. In the detection process, the measuring instrument is directly placed on a detection sample, and then the related operation of the measurement operation is carried out. In the multi-point detection of the sample, a detector is required to repeatedly pick up the measuring instrument and then place the measuring instrument on a new detection point for measurement. In the process of performing the operation, the position adjustment of the measuring instrument completely depends on subjective judgment of a detecting person, meanwhile, different detection points are difficult to preset according to the actual condition of a sample, the measuring instrument is ensured to accurately move to the appointed detection point in the actual detection process, the reliability and the precision of a measuring result are influenced, and the subjective operation of the detecting person leads to error increase.

Disclosure of Invention

In order to solve the technical problems, the invention provides a miniature automatic portable contact angle testing instrument.

The technical scheme of the invention is realized as follows:

The utility model provides a miniature automatic portable contact angle test instrument, includes the casing, sets up at inside formation of image collection structure, liquid storage pot, injection structure, the LED light source of casing, four corners of casing all are provided with the gyro wheel that can go up and down, follow when the gyro wheel is located the lowest position the bottom of casing stretches out, the gyro wheel be located take in the casing when the highest position, the tooth's socket has been seted up at the gyro wheel middle part, the meshing has the gear train on the tooth's socket, the output side of gear train is connected with the calibrated scale, the gyro wheel drives the calibrated scale rotatory when rolling on the sample, be provided with the pointer that is used for judging rolling distance on the casing, the pointed end of pointer points to the center of calibrated scale.

Further, the gyro wheel includes wheel body and wheel carrier, the wheel carrier is whole to be open "U" shape down, the gyro wheel rotates and installs the open bottom of wheel carrier, the gear train includes round gear, no. two round gears, a bevel gear and No. two bevel gears, no. one round gear and No. two round gears all rotate and install in the wheel carrier, the bottom of No. one round gear with the tooth's socket meshing, the bottom of No. two round gears with the top meshing of No. one round gear, no. one bevel gear is located one side of wheel carrier and through the gear shaft with No. two round gears are connected, one side of No. two bevel gears with the top meshing of No. one bevel gear, the top fixed mounting of wheel carrier has the connecting axle, the outside rotation cover of connecting axle is equipped with the axle sleeve, no. two bevel gears fixed cover is established the bottom of axle sleeve, the calibrated scale is fixedly installed the top of axle sleeve.

Further, the four corners of casing all have offered the mounting groove that is "I" shape, the sleeve is installed to the mounting groove rotation, gyro wheel, gear train, calibrated scale, connecting axle and axle sleeve all are located in the sleeve, the wheel carrier top be with the circular structure of sleeve bottom internal diameter looks adaptation, the lateral surface fixed mounting at wheel carrier top has the lift slider, set up on the sleeve inside wall be used for the lift spout of lift slider displacement.

Further, the limiting blocks are fixedly installed on two sides of the outer side face of the shaft sleeve, four longitudinal limiting grooves are formed in the inner side wall of the sleeve, an annular groove located at the bottom of the longitudinal limiting grooves is formed in the inner side wall of the sleeve, the bottom end of the longitudinal limiting grooves is communicated with the top end of the annular groove, the limiting blocks are located at the top ends of the longitudinal limiting grooves when the roller is located at the highest position, and the limiting blocks are located in the annular groove when the roller is located at the lowest position.

Further, the outside cover of calibrated scale is equipped with the sleeve, be used for being seted up at the bottom center of sleeve top is passed the through-hole, the breach that is used for observing the scale on the calibrated scale is seted up to top one side of sleeve, the tail end of pointer is installed on the outside internal face of breach, one of them the sleeve with screw-thread fit just the top of this sleeve is fixed with the knob between the top internal face of telescopic, remaining clearance between sleeve and the telescopic top, four connect gradually through a coupling assembling between the sleeve, a coupling assembling is used for controlling four sleeve synchronous rotation, four connect through No. two coupling assembling between the sleeve, no. two coupling assembling are used for controlling four sleeve synchronous lift.

Further, the bottom of the shell is rotatably provided with a movable sleeve, the shaft sleeve penetrates through two ends of the movable sleeve, a spring is arranged in the movable sleeve, the top end of the spring is connected with the inner top wall of the shell, and the bottom end of the spring is connected with the inner wall surface of the sleeve.

Further, four the sleeve includes a sleeve, no. two sleeves, no. three sleeves and No. four sleeves in proper order, a coupling assembling includes major axis, no. three bevel gears, no. four bevel gears and hold-in range, all be provided with the major axis between No. one sleeve and No. two sleeves and between No. three sleeves and No. four sleeves, the major axis rotates and installs on the casing, the equal fixed mounting in both ends of major axis has No. three bevel gears, all fixed cover is equipped with No. four bevel gears on No. one sleeve, no. two sleeves, no. three sleeves and No. four sleeves, and four No. four bevel gears mesh with four No. three bevel gears respectively, the hold-in range is connected No. two sleeves and No. three sleeves between.

Further, no. two coupling assembling includes connecting plate, axial logical groove and arc logical groove, and adjacent two connect through the connecting plate between the cover shell, four axial logical grooves along the axial distribution have been seted up on the surface of cover shell, the width in axial logical groove with the width looks adaptation of connecting plate, the arc is led to the groove and is seted up the surface of cover shell, the arc is led to the groove and is led to the bottom intercommunication of four axial logical grooves on the cover shell, just when the gyro wheel is located the minimum position, the connecting plate is located in the arc logical groove, when the gyro wheel is located the highest position, the connecting plate is located the top in axial logical groove.

Further, the bottom of the movable sleeve is arranged in an open mode, and when the roller is located at the lowest position, the bottom of the movable sleeve is abutted to the inner wall surface of the sleeve.

Further, a convex ring is fixedly sleeved outside the top end of the sleeve, and the outer side of the convex ring extends out of the lateral direction of the shell.

The invention has the following beneficial effects:

1. When the miniature automatic portable contact angle testing instrument is used for measuring the wettability of different positions of the surface of a sample, the roller extends out from the bottom of the shell and supports the whole testing instrument, then the whole testing instrument is supported by the roller to move on the surface of the sample, meanwhile, the dial can synchronously act in the rolling process of the roller and cooperate with the indication action of the pointer, so that the displacement distance can be judged by the straight pipe, further, when the wettability of a large-size sample is detected, different detection points can be planned in advance according to the properties of the sample, then the displacement distance of the testing instrument on the surface of the sample is indicated by the dial, the detection can be accurately carried out according to the preset detection points, and the detection precision of the wettability of the large-size sample is improved. In addition, in the process of switching the detection points, the whole test instrument is not required to be frequently lifted and put down, the detection points are checked, the difficulty and the error of aligning the detection points when the detection points are judged by human eyes are reduced, and the reliability and the precision of the wettability detection are further ensured.

2. The miniature automatic portable contact angle testing instrument provided by the invention has the advantages that the two states of reversing and rolling of the roller are not mutually interfered in the use process, particularly, the reversing function of the roller is utilized, different detection points are allowed to be arranged on the surface of a large-size sample according to a matrix state, and the wetting performance of each detection point is sequentially measured by utilizing the testing instrument in an S-shaped track.

Drawings

FIG. 1 is an overall schematic of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1 in accordance with the present invention;

FIG. 3 is a bottom view of FIG. 1 of the present invention;

FIG. 4 is an enlarged view of section B of FIG. 3 in accordance with the present invention;

FIG. 5 is a schematic view of a mounting slot of the present invention;

FIG. 6 is an overall schematic of four sleeves in the corners of the housing of FIG. 1 in accordance with the present invention;

FIG. 7 is a cross-sectional view of the single sleeve of FIG. 6 in accordance with the present invention;

FIG. 8 is an enlarged view of section C of FIG. 7 in accordance with the present invention;

FIG. 9 is an enlarged view of section D of FIG. 7 in accordance with the present invention;

FIG. 10 is a partial schematic view of FIG. 7 in accordance with the present invention;

FIG. 11 is a schematic view of the sleeve, dial, and roller of the present invention;

fig. 12 is an enlarged view of the portion E in fig. 11;

Fig. 13 is an enlarged view of the portion F in fig. 11.

In the figure: 1. a housing; 2. an injection structure; 3. an LED light source; 4. a roller; 4.1, a wheel body; 4.2, a wheel frame; 5. tooth slots; 6. a gear set; 6.1, a first round gear; 6.2, a second round gear; 6.3, a first bevel gear; 6.4, a two-tooth bevel gear; 7. a dial; 8. a pointer; 9. a connecting shaft; 10. a shaft sleeve; 11. a mounting groove; 12. a sleeve; 12.1, sleeve number one; 12.2, sleeve number two; 12.3, sleeve number three; 12.4, sleeve number four; 13. a lifting slide block; 14. lifting sliding grooves; 15. a limiting block; 16. a longitudinal limit groove; 17. an annular groove; 18. a casing; 19. a notch; 20. a knob; 21. a movable sleeve; 22. a spring; 23. a long axis; 24. a third bevel gear; 25. a fourth bevel gear; 26. a synchronous belt; 27. a connecting plate; 28. an axial through groove; 29. arc through grooves; 30. a convex ring.

Detailed Description

The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

As shown in fig. 1 to 13, a miniature automatic portable contact angle testing instrument comprises a housing 1, an imaging acquisition structure arranged in the housing 1, a liquid storage tank, an injection structure 2 and an LED light source 3, wherein four corners of the housing 1 are provided with rollers 4 capable of lifting, the rollers 4 extend out from the bottom end of the housing 1 when positioned at the lowest position, the rollers 4 are contained in the housing 1 when positioned at the highest position, tooth grooves 5 are formed in the middle of the rollers 4, gear sets 6 are meshed on the tooth grooves 5, a dial 7 is connected to the output side of the gear sets 6, the rollers 4 drive the dial 7 to rotate when rolling on a sample, pointers 8 for judging rolling distances are arranged on the housing 1, and the tips of the pointers 8 point to the center of the dial 7.

When the wettability of different positions of a large-size sample is detected, a plurality of detection points are preset according to the large-size sample, then measurement is carried out from the first detection point, and in the process of measurement, the roller is adjusted to the highest position and is accommodated in the shell 1. After one detection point is measured, the roller 4 is lowered to the lowest position, the whole test instrument is lifted to be separated from the surface of the sample, then the test instrument is directly moved on the surface of the sample, the roller 4 drives the gear set 6 to act through the tooth groove 5 in the rolling process of the surface of the sample, the output side of the gear set 6 drives the dial 7 to rotate, in the rotating process of the dial 7, a detector can intuitively determine the moving distance of the test instrument by referring to the pointer 8, and then the position of the test instrument can be determined according to the moving direction of the test instrument, and then the test instrument can be more accurately moved to the preset detection point to perform wettability detection. Compared with the prior art that the displacement distance and the selection of the monitoring points are subjectively controlled by a detector, and the position switching of different detection points is realized by frequently picking up or putting down the test instrument, the wettability detection is more objective and reliable, and the position adjustment of the test instrument is more convenient.

On the basis, the idler wheel 4 comprises a wheel body 4.1 and a wheel frame 4.2, the wheel frame 4.2 is in a U shape with an opening facing downwards, the idler wheel 4 is rotatably arranged at the bottom end of the opening of the wheel frame 4.2, the gear set 6 comprises a first round gear 6.1, a second round gear 6.2, a first bevel gear 6.3 and a second bevel gear 6.4, the first round gear 6.1 and the second round gear 6.2 are rotatably arranged in the wheel frame 4.2, the bottom end of the first round gear 6.1 is meshed with a tooth socket 5, the bottom of the second round gear 6.2 is meshed with the top end of the first round gear 6.1, the first bevel gear 6.3 is located on one side of the wheel frame 4.2 and is connected with the second round gear 6.2 through a gear shaft, one side of the second bevel gear 6.4 is meshed with the top of the first bevel gear 6.3, a connecting shaft 9 is fixedly arranged at the top of the wheel frame 4.2, a 10 is sleeved outside the connecting shaft 9 in a rotating mode, the second bevel gear 6.4 is fixedly sleeved at the bottom end of the shaft sleeve 10, and the dial sleeve 10 is fixedly arranged at the top end of the shaft sleeve 7.

The axle sleeve 10 can go up and down to install on casing 1, simultaneously, the axle sleeve 10 goes up and down the in-process through driving connecting axle 9 for connecting axle 9 drives wheel body 4.1 through wheel carrier 4.2 and goes up and down in step, and then, can realize the lift to wheel body 4.1 through the lift of control axle sleeve 10 directly.

When the wheel body 4.1 rolls on the surface of a sample, the tooth grooves 5 rotate along with the wheel body 4.1 and drive the first round gear 6.1 to rotate, the first round gear 6.1 drives the second round gear 6.2 to rotate, the second round gear 6.2 drives the first bevel gear 6.3 to rotate through the gear shaft, the first bevel gear 6.3 drives the second bevel gear 6.4 to rotate, the second bevel gear 6.4 drives the shaft sleeve 10 to rotate, at the moment, the shaft sleeve 10 rotates outside the connecting shaft 9 and the shaft sleeve 10 drives the dial 7 to rotate, and further, the dial 7 is driven to rotate through the rolling of the wheel body 4.1 on the sample, so that the visual determination of the displacement distance of the test instrument is realized.

The four corners of casing 1 all have offered the mounting groove 11 that is "I" shape, and sleeve 12 is installed in the mounting groove 11 internal rotation, and gyro wheel 4, gear train 6, calibrated scale 7, connecting axle 9 and axle sleeve 10 all are located sleeve 12, and wheel carrier 4.2 top is the circular structure with sleeve 12 bottom internal diameter looks adaptation, and the lateral surface fixed mounting at wheel carrier 4.2 top has lift slider 13, has offered the lift spout 14 that is used for lift slider 13 displacement on the sleeve 12 inside wall.

The inner diameter of the upper end and the lower end of the mounting groove 11 is larger than that of the middle part, so that the mounting groove 11 limits the sleeve 12 in the height direction. By the cooperation of the lifting slide block 13 and the lifting slide groove 14, the roller 4 and the sleeve 12 are in a relatively fixed state in the circumferential direction, and the roller 4 can move up and down in the sleeve 12. In this way, the adjustment of the direction of movement of the roller 4 can be achieved by directly rotating the sleeve 12.

Further, the two sides of the outer side surface of the shaft sleeve 10 are fixedly provided with limiting blocks 15, the inner side wall of the sleeve 12 is provided with four longitudinal limiting grooves 16, the inner side wall of the sleeve 12 is provided with an annular groove 17 positioned at the bottom of the longitudinal limiting grooves 16, the bottom end of the longitudinal limiting grooves 16 is communicated with the top end of the annular groove 17, the limiting blocks 15 are positioned at the top ends of the longitudinal limiting grooves 16 when the roller 4 is positioned at the highest position, and the limiting blocks 15 are positioned in the annular groove 17 when the roller 4 is positioned at the lowest position.

Specifically, when the limiting block 15 is located in the longitudinal limiting groove 16, the sleeve 12 can limit the shaft sleeve 10 in the circumferential direction, so that the sleeve 12 and the dial 7 are kept relatively static in the circumferential direction when the roller 4 is in the storage state, and the scale indicated by the pointer 8 is not changed when the roller 4 is in the storage state.

Wherein, the outside cover of calibrated scale 7 is equipped with the cover shell 18, the through-hole that is used for the axle sleeve 10 top to pass is offered at the bottom center of cover shell 18, the breach 19 that is used for observing the scale on the calibrated scale 7 is offered to top one side of cover shell 18, install on the outside internal face of breach 19 at the tail end of pointer 8, screw-thread fit between the top internal face of one cover shell 18 and sleeve 12 and the top of this cover shell 18 is fixed with knob 20, clearance fit between the top of other cover shells 18 and sleeve 12, connect gradually through coupling assembling No. one between four sleeves 12, coupling assembling is used for controlling four sleeve 12 synchronous rotation, connect through No. two coupling assembling between four cover shells 18, no. two coupling assembling is used for controlling four sleeve 12 synchronous lift.

Through rotating knob 20, knob 20 drives the cover shell 18 rotatory of being connected with it, this cover shell 18 through with corresponding sleeve 12 threaded connection, it can be in sleeve 12 elevating movement, at this moment, the cover shell 18 makes calibrated scale 7 drive axle sleeve 10 elevating movement through driving calibrated scale 7 synchronous elevating movement, and in the in-process that axle sleeve 10 is elevating movement can drive wheel body 4.1 through connecting axle 9 and wheel carrier 4.2 elevating movement, in this process, lift slider 13 is at the displacement of lift spout 14, and stopper 15 when the displacement in vertical spacing groove 16, axle sleeve 10 and sleeve 12 all remain static in the circumferencial direction, in order to ensure that the reverse of rolling of wheel body 4.1 can not take place the malfunction because of the elevating process. After the wheel body 4.1 descends to the lowest position, the limiting block 15 moves into the annular groove 17, at the moment, the sleeve 12 is rotated, and the sleeve 12 drives the wheel body 4.1 to rotate through the lifting sliding block 13 and the lifting sliding groove 14, so that the function of adjusting the displacement direction of the test instrument is achieved.

The bottom of the shell 18 is rotatably provided with a movable sleeve 21, the shaft sleeve 10 penetrates through two ends of the movable sleeve 21, a spring 22 is arranged in the movable sleeve 21, the top end of the spring 22 is connected with the inner top wall of the shell 18, and the bottom end of the spring 22 is connected with the inner wall surface of the sleeve 12. When the sleeve 18 moves up and down in the sleeve 12, the movable sleeve 21 is driven to move up and down in the sleeve 12 synchronously, and in addition, the movable sleeve 21 is not interfered by the rotation of the sleeve 18 due to the rotary connection between the movable sleeve 21 and the sleeve 18. The spring 22 always maintains an upward elastic force to the jacket 18 by the movable sleeve 21.

On this basis, four sleeves 12 include sleeve 12.1, sleeve 12.2 No. two, sleeve 12.3 No. three and sleeve 12.4 No. four in proper order, a coupling assembling includes major axis 23, no. three bevel gears 24, no. four bevel gears 25 and hold-in range 26, all be provided with major axis 23 between sleeve 12.1 and sleeve 12.2 No. three and between sleeve 12.3 and sleeve 12.4 No. four, major axis 23 rotates and installs on casing 1, the equal fixed mounting in both ends of major axis 23 has No. three bevel gears 24, sleeve 12.1 No. two sleeve 12.2, no. three sleeve 12.3 and sleeve 12.4 are gone up all fixed cover and are equipped with No. four bevel gears 25, and No. four bevel gears 25 mesh with No. four bevel gears 24 respectively, hold-in range 26 connects between sleeve 12.2 and sleeve 12.3 No. four.

When the first sleeve 12.1 is rotated, the first sleeve 12.1 drives the second sleeve 12.2 to synchronously rotate through the third bevel gear 24 and the fourth bevel gear 25, the second sleeve 12.2 drives the third sleeve 12.3 to synchronously rotate through the synchronous belt 26, and the third sleeve 12 drives the fourth sleeve 12.4 to synchronously rotate through the other third bevel gear 24 and the fourth bevel gear 25. With this accessible rotatory sleeve 12.1, no. 12, no. 12.3 and No. 12.4 of sleeve are interior arbitrary one, and four sleeves 12 all synchronous rotation, and then realize the adjustment to four wheel body 4.1 orientation simultaneously, let the orientation of four wheel body 4.1 keep unanimous, more convenient adjustment to the test instrument displacement direction.

The second connecting component comprises a connecting plate 27, an axial through groove 28 and an arc through groove 29, two adjacent casings 18 are connected through the connecting plate 27, four axial through grooves 28 distributed along the axial direction are formed in the surface of each casing 18, the width of each axial through groove 28 is matched with the width of each connecting plate 27, the arc through groove 29 is formed in the surface of each casing 18, the bottom ends of the four axial through grooves 28 on each casing 18 are communicated through the arc through groove 29, when the roller 4 is located at the lowest position, the connecting plate 27 is located in the arc through groove 29, and when the roller 4 is located at the highest position, the connecting plate 27 is located at the top end of each axial through groove 28.

When the knob 20 is operated to make the sleeve 18 connected with the knob move up and down in the corresponding sleeve 12, the sleeve 18 rotates at the top of the movable sleeve 21 at the bottom of the sleeve, the movable sleeve 21 cannot rotate in the whole process, the movable sleeve 21 is driven by the sleeve 18 to move up and down synchronously with the sleeve 18, at this time, the four movable sleeves 21 are driven by the connecting plate 27 to move up and down synchronously, the four sleeves 18 are further driven by the dial 7 and the shaft sleeve 10 to move up and down synchronously, and the height of the four wheel bodies 4.1 can be adjusted simultaneously. So that the switching between the two states of the wheel body 4.1 extending from the housing 1 and being accommodated in the housing 1 is more convenient in operation.

When the connecting plate 27 is located in the axial through groove 28, the wheel body 4.1 is in a state of not moving to the lowest position, and the connecting plate 27 limits the sleeves 12 through the axial through groove 28, so that the four sleeves 12 cannot rotate, and the direction of the wheel body 4.1 is kept from misoperation in the process of adjusting the direction of the wheel body 4.1.

The bottom of the movable sleeve 21 is arranged in an open mode, and when the roller 4 is located at the lowest position, the bottom of the movable sleeve 21 abuts against the inner wall surface of the sleeve 12. At this time, when the knob 20 is operated such that the sleeve 18 connected to the knob 20 is rotated in the sleeve 12 and is displaced downward, the bottom end of the movable sleeve 21 abuts against the sleeve 12, and the limit position of the downward movement thereof can be limited. The top end of the sleeve 12 is fixedly sleeved with a convex ring 30, and the outer side of the convex ring 30 extends out of the lateral direction of the shell 1. The convex ring 30 is utilized to rotate the sleeve 12 more conveniently, so that the direction of the wheel body 4.1 is adjusted, and the function of adjusting the displacement direction of the test instrument is achieved.

In the above embodiment of the present application, when the roller 4 is switched between the lowest position and the highest position, the sleeve 18 screwed with the sleeve 12 rotates just once in the corresponding sleeve 12. The setting is so that the scale on the dial 7 indicated by the pointer 8 is the same in the initial state and the final state of the height of the adjusting roller 4, thereby being more convenient for the use of the testing instrument.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.

Claims

1. The utility model provides a miniature automatic portable contact angle test instrument, includes casing (1), sets up at inside formation of image collection structure, liquid storage pot, injection structure (2), LED light source (3) of casing (1), a serial communication port, four corners of casing (1) all are provided with gyro wheel (4) that can go up and down, gyro wheel (4) are located follow when the minimum position the bottom of casing (1) stretches out, gyro wheel (4) are located accomodate in casing (1) when the highest position, tooth's socket (5) have been seted up at gyro wheel (4) middle part, meshing has gear train (6) on tooth's socket (5), the output side of gear train (6) is connected with calibrated scale (7), gyro wheel (4) drive calibrated scale (7) rotation when rolling on the sample, be provided with on casing (1) and be used for judging pointer (8) of roll distance, the pointed the point of pointer (8) is directional the center of calibrated scale (7).

2. The miniature automatic portable contact angle testing instrument according to claim 1, wherein the roller (4) comprises a wheel body (4.1) and a wheel frame (4.2), the wheel frame (4.2) is in a U shape with an opening facing downwards, the roller (4) is rotatably arranged at the bottom end of the opening of the wheel frame (4.2), the gear set (6) comprises a first round gear (6.1), a second round gear (6.2), a first bevel gear (6.3) and a second bevel gear (6.4), the first round gear (6.1) and the second round gear (6.2) are rotatably arranged in the wheel frame (4.2), the bottom end of the first round gear (6.1) is meshed with the tooth groove (5), the bottom of the second round gear (6.2) is meshed with the top end of the first round gear (6.1), the first bevel gear (6.3) is positioned on one side of the wheel frame (4.2) and fixedly connected with the top of the second round gear (4.10) through a shaft sleeve (6.10), the top of the first round gear (6.2) is fixedly arranged on one side of the wheel frame (4), the dial (7) is fixedly arranged at the top end of the shaft sleeve (10).

3. The miniature automatic portable contact angle testing instrument according to claim 2, wherein the four corners of the shell (1) are provided with mounting grooves (11) in an I shape, the mounting grooves (11) are internally provided with sleeves (12) in a rotating manner, the rollers (4), the gear sets (6), the dial (7), the connecting shaft (9) and the shaft sleeve (10) are all positioned in the sleeves (12), the top of the wheel carrier (4.2) is in a circular structure matched with the inner diameter of the bottom of the sleeves (12), the outer side surface of the top of the wheel carrier (4.2) is fixedly provided with lifting sliding blocks (13), and the inner side wall of the sleeve (12) is provided with lifting sliding grooves (14) for the displacement of the lifting sliding blocks (13).

4. A miniature automatic portable contact angle testing instrument according to claim 3, wherein limiting blocks (15) are fixedly installed on two sides of the outer side face of the shaft sleeve (10), four longitudinal limiting grooves (16) are formed in the inner side wall of the sleeve (12), annular grooves (17) located at the bottoms of the longitudinal limiting grooves (16) are formed in the inner side wall of the sleeve (12), the bottoms of the longitudinal limiting grooves (16) are communicated with the top ends of the annular grooves (17), the limiting blocks (15) are located at the top ends of the longitudinal limiting grooves (16) when the roller (4) is located at the highest position, and the limiting blocks (15) are located in the annular grooves (17) when the roller (4) is located at the lowest position.

5. A miniature automatic portable contact angle testing instrument according to claim 3, wherein the outside of the dial (7) is sleeved with a casing (18), a through hole for the top of the sleeve (10) to pass through is formed in the bottom center of the casing (18), a notch (19) for observing the scale on the dial (7) is formed in one side of the top of the casing (18), the tail end of the pointer (8) is mounted on the outer inner wall surface of the notch (19), one of the casings (18) is in threaded fit with the top inner wall surface of the sleeve (12), a knob (20) is fixed at the top of the casing (18), the other casings (18) are in movable fit with the top of the sleeve (12), four sleeves (12) are sequentially connected through a first connecting component, the first connecting component is used for controlling the four sleeves (12) to synchronously rotate, the four sleeves (18) are connected through a second connecting component, and the second connecting component is used for controlling the four sleeves (12) to synchronously lift.

6. The miniature automatic portable contact angle testing instrument according to claim 5, wherein a movable sleeve (21) is rotatably installed at the bottom end of the casing (18), the shaft sleeve (10) penetrates through two ends of the movable sleeve (21), a spring (22) is arranged in the movable sleeve (21), the top end of the spring (22) is connected with the inner top wall of the casing (18), and the bottom end of the spring (22) is connected with the inner wall surface of the sleeve (12).

7. The miniature automatic portable contact angle testing instrument according to claim 6, wherein four sleeves (12) sequentially comprise a first sleeve (12.1), a second sleeve (12.2), a third sleeve (12.3) and a fourth sleeve (12.4), the first connecting component comprises a long shaft (23), a third bevel gear (24), a fourth bevel gear (25) and a synchronous belt (26), long shafts (23) are respectively arranged between the first sleeve (12.1) and the second sleeve (12.2) and between the third sleeve (12.3) and the fourth sleeve (12.4), the long shaft (23) is rotatably mounted on the shell (1), the third bevel gear (24) is fixedly mounted at two ends of the long shaft (23), the fourth bevel gear (25) is fixedly sleeved on the first sleeve (12.1), the second sleeve (12.2), the third sleeve (12.3) and the fourth sleeve (12.4), and the fourth bevel gear (25) is respectively meshed with the fourth bevel gear (24) and the third sleeve (12.4).

8. The miniature automatic portable contact angle testing instrument according to claim 6, wherein the second connecting component comprises a connecting plate (27), an axial through groove (28) and an arc through groove (29), two adjacent casings (18) are connected through the connecting plate (27), four axial through grooves (28) distributed along the axial direction are formed in the surface of the casing (18), the width of each axial through groove (28) is matched with the width of the corresponding connecting plate (27), the arc through groove (29) is formed in the surface of the casing (18), the bottom ends of the four axial through grooves (28) on the casing (18) are communicated by the arc through groove (29), when the roller (4) is located at the lowest position, the connecting plate (27) is located in the arc through groove (29), and when the roller (4) is located at the highest position, the connecting plate (27) is located at the top end of the axial through groove (28).

9. The miniature automatic portable contact angle testing instrument according to claim 8, wherein the bottom end of the movable sleeve (21) is arranged in an open manner, and the bottom end of the movable sleeve (21) is abutted against the inner wall surface of the sleeve (12) when the roller (4) is located at the lowest position.

10. A miniature automatic portable contact angle testing apparatus according to claim 3, wherein a convex ring (30) is fixedly sleeved on the outer part of the top end of the sleeve (12), and the outer side of the convex ring (30) extends out from the lateral direction of the shell (1).