Optical filtering module device for high-temperature vacuum contact angle measuring instrument

Abstract

The utility model relates to the technical field of contact angle measuring instrument parts, in particular to an optical filtering module device for a high-temperature vacuum contact angle measuring instrument, which comprises a shell, an aperture adjusting mechanism and a filtering adjusting mechanism. The light filtering adjusting mechanism comprises a mounting cover, a mounting plate, a plurality of light filters and a plurality of positioning assemblies, the aperture adjusting mechanism comprises a driving assembly, two mounting rings, two rotating assemblies and a plurality of separation blades, and by arranging the aperture adjusting mechanism and the light filtering adjusting mechanism, scattered light emitted by the light source can be converted into parallel light; the problem that the contact angle measurement precision is reduced due to the fact that the boundary of the liquid drop is fuzzy due to light scattering is effectively avoided, and the use requirement is met.

Description

Technical Field

[0001] The utility model relates to the technical field of parts of a contact angle measuring instrument, in particular to an optical filter module device for a high-temperature vacuum contact angle measuring instrument. Background Technique

[0002] The high-temperature high-vacuum contact angle measuring instrument is mainly used to measure the contact angle of a liquid on a solid, that is, the wettability of the liquid on the solid. This instrument can measure the contact angles of various liquids on various materials. The optical filter module is an important component in the contact angle measuring instrument.

[0003] The existing optical filter module for a high-temperature vacuum contact angle measuring instrument has the problem of poor contact angle measurement accuracy. Since the scattering of light will blur the boundary of the liquid droplet, the contact angle measurement accuracy will be reduced. In view of this problem, an optical filter module device for a high-temperature vacuum contact angle measuring instrument is provided now. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an optical filter module device for a high-temperature vacuum contact angle measuring instrument to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] An optical filter module device for a high-temperature vacuum contact angle measuring instrument includes a housing, and also includes a diaphragm adjusting mechanism and a filter adjusting mechanism;

[0007] The filter adjusting mechanism includes a mounting cover, a mounting plate, a plurality of filter lenses and a plurality of positioning components. The mounting cover is mounted at one end of the housing. The mounting plate is slidably arranged inside the mounting cover. The plurality of filter lenses are equidistantly arranged on the surface of the mounting plate. Each positioning component is located on both sides of a filter lens, and each positioning component is located between the mounting cover and the mounting plate;

[0008] The diaphragm adjusting mechanism includes a driving component, two mounting rings, two rotating components and a plurality of baffles. The two mounting rings are installed side by side inside the housing. A plurality of rotating shafts are rotatably arranged equidistantly on each mounting ring. One end of each baffle is fixedly connected to one end of the rotating shaft. Each rotating component is located between the plurality of rotating shafts on the same mounting ring. The driving component is installed between the housing and the two rotating components.

[0009] As a further scheme of the utility model: each positioning component includes two positioning holes, two balls, two mounting seats, two cross plates and two springs;

[0010] The two positioning holes are respectively located on both sides of a filter and are both opened on the surface of the mounting plate. A mounting seat is provided on the side of each positioning hole away from the mounting plate, and a ball matching the positioning hole is provided on each mounting seat.

[0011] One end of the mounting seat away from the ball is fixed with a telescopic rod, the other end of the telescopic rod is fixedly connected with a cross plate, each cross plate is fixed on the mounting cover, each spring is sleeved on the outside of a telescopic rod, and both ends of each spring are respectively connected with a cross plate and a mounting seat.

[0012] As a further solution of the present utility model: Two sliding grooves are symmetrically opened on the side of the mounting plate close to the outer shell, the two sliding grooves are respectively located on the upper and lower sides of multiple filters, and two limiting strips matching the sliding grooves are symmetrically fixed on the inner wall of the mounting cover, and each limiting strip is inserted and slidably arranged inside a sliding groove.

[0013] As a further solution of the present utility model: Two through holes are symmetrically opened on the left and right sides of the mounting cover, the shape of each through hole matches the cross-sectional shape of the mounting plate, and pull rings are fixed at both ends of the mounting plate.

[0014] As a further solution of the present utility model: Each rotating assembly includes a belt, a first bevel gear, a second bevel gear and multiple belt pulleys;

[0015] One end of each rotating shaft away from the baffle is fixed with a belt pulley, the belt is sleeved on multiple belt pulleys, a first bevel gear is fixed on one side of one of the belt pulleys, the second bevel gear is rotatably arranged on the outer shell, and the second bevel gear meshes with the first bevel gear.

[0016] As a further solution of the present utility model: A through hole facilitating the passage of light is formed in the middle of the mounting ring, and a light-transmitting hole facilitating the transmission of light is formed between multiple baffles.

[0017] As a further solution of the present utility model: The driving assembly includes a fixed shell, a light rod, two worm wheels and two worm gears. The fixed shell is fixed on the top surface of the outer shell. The top end of each second bevel gear extends into the inside of the fixed shell and is fixedly connected with a worm wheel. Each worm gear is located on one side of a worm wheel and meshes with the worm wheel. The light rod penetrates through the two worm gears and both ends are rotatably arranged on the fixed shell.

[0018] As a further solution of the present utility model: Both ends of the light rod pass through the fixed shell and are fixed with a knob facilitating rotation;

[0019] As a further solution of the present utility model: A light homogenizing sheet is installed inside the outer shell away from the mounting cover.

[0020] As a further solution of the present utility model: A lens is installed at one end of the mounting cover away from the outer shell.

[0021] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0022] 1. For the optical filter module device of a high-temperature vacuum contact angle measuring instrument of the present utility model, by setting an aperture adjustment mechanism and a filter adjustment mechanism, the scattered light emitted by the light source can be converted into parallel light, effectively avoiding the problem that the boundary of the liquid droplet is blurred due to light scattering, which will reduce the contact angle measurement accuracy, and meeting the use requirements.

[0023] 2. For the optical filter module device of a high-temperature vacuum contact angle measuring instrument of the present utility model, by setting a positioning component and cooperating with the sliding of the mounting plate, when moving the mounting plate, the movement of multiple filter lenses can be realized, the replacement of the filter lenses can be realized, and thus the change of the light wave length can be realized. It can effectively suppress the interference and diffraction phenomena at the boundary of the liquid droplets of different test materials, which is beneficial to improving the contact angle measurement accuracy. At the same time, the positioning component can fix the mounting plate after position adjustment to avoid displacement.

[0024] 3. For the optical filter module device of a high-temperature vacuum contact angle measuring instrument of the present utility model, by setting a driving component and two rotating components, the size of the light-transmitting holes formed in the middle of multiple baffles can be adjusted simultaneously, and the light transmission amount can be adjusted according to needs. Description of the Drawings

[0025] Figure 1 It is a structural schematic diagram of the present utility model.

[0026] Figure 2 It is a sectional view of the present utility model.

[0027] Figure 3 It is an internal structural schematic diagram of the mounting cover in the present utility model.

[0028] Figure 4 It is a split structural schematic diagram of the mounting plate and the mounting cover in the present utility model.

[0029] Figure 5 It is the present utility model Figure 4 An enlarged structural schematic diagram of part A therein.

[0030] Figure 6 It is a structural schematic diagram of two mounting rings in the present utility model Figure 1 .

[0031] Figure 7 It is the present utility model Figure 6 An enlarged structural schematic diagram of part B therein.

[0032] Figure 8 It is a structural schematic diagram of two mounting rings in the present utility model Figure 2 .

[0033] Wherein: 11, outer shell; 12, mounting cover; 13, lens; 14, light homogenizing sheet; 15, mounting ring; 16, through hole; 17, baffle; 18, rotating shaft; 19, pulley; 20, belt; 21, light transmission hole; 22, first bevel gear; 23, second bevel gear; 24, worm gear; 25, worm; 26, optical rod; 27, fixed housing; 28, knob; 29, filter lens; 30, mounting plate; 31, chute; 32, limiting strip; 33, positioning hole; 34, ball; 35, mounting seat; 36, cross plate; 37, telescopic rod; 38, spring; 39, perforation; 40, pull ring; 41, perforation. Detailed implementation manners

[0034] The principles and features of the present utility model will be described below in conjunction with the accompanying drawings. The examples given are only used to explain the present utility model and are not intended to limit the scope of the present utility model.

[0035] The present utility model provides the following preferred embodiments:

[0036] Embodiment 1, as Figures 1 - 8 shown, an optical filter module device for a high-temperature vacuum contact angle measuring instrument, includes an outer shell 11, and further includes an aperture adjusting mechanism and a filter adjusting mechanism;

[0037] The filter adjusting mechanism includes a mounting cover 12, a mounting plate 30, a plurality of filter lenses 29 and a plurality of positioning components. The mounting cover 12 is installed at one end of the outer shell 11. The mounting plate 30 is slidably arranged inside the mounting cover 12. The plurality of filter lenses 29 are equidistantly arranged on the surface of the mounting plate 30. Each positioning component is located on both sides of a filter lens 29, and each positioning component is located between the mounting cover 12 and the mounting plate 30. Specifically, a perforation 41 for light transmission is provided between the mounting cover 12 and the outer shell 11. One of the filter lenses 29 corresponds to the perforation 41. The filter lens 29 can adjust the spectral range, making the light irradiated on the droplet more suitable for the detection requirements;

[0038] By adjusting the position of the mounting plate 30, different filter lenses 29 can be aligned with the perforation 41, so as to realize the replacement of the filter lenses 29, thereby changing the light wavelength. It can effectively suppress the interference and diffraction phenomena at the droplet boundary of different test materials, which is beneficial to improving the contact angle measurement accuracy. The positioning component can realize the positioning after the position of the mounting plate 30 is adjusted, avoiding displacement from affecting the detection accuracy;

[0039] The filter lens 29 is a prior art. The main principle is to deflect and rotate the light at a certain angle through multiple reflections or transmissions, so as to realize the uniform distribution of the light. Its main principle is to deflect and rotate the light at a certain angle through multiple reflections or transmissions, so as to realize the uniform distribution of the light;

[0040] The aperture adjustment mechanism includes a driving component, two mounting rings 15, two rotating components, and multiple baffles 17. The two mounting rings 15 are arranged in parallel inside the housing 11, with a certain gap between the two mounting rings 15. A through hole 16 facilitating the passage of light is formed in the middle of each mounting ring 15. A plurality of rotating shafts 18 are rotatably arranged at equal intervals on each mounting ring 15. Each rotating shaft 18 penetrates through the mounting ring 15. One end of each baffle 17 is fixedly connected to one end of the rotating shaft 18. It should be noted that the multiple baffles 17 on one side of the same mounting ring 15 are arranged staggeredly. When the rotating shaft 18 rotates, it can drive the baffle 17 to rotate, and a light-transmitting hole 21 facilitating light transmission is formed between the multiple baffles 17. By rotating the rotating shaft 18 to drive the baffle 17 to rotate, the size of the light-transmitting hole 21 between the multiple baffles 17 can be adjusted, and the light transmission amount can be adjusted as needed. Each rotating component is located between the multiple rotating shafts 18 on the same mounting ring 15. The driving component is installed between the housing 11 and the two rotating components. The driving component can drive the two rotating components to operate synchronously, so that the rotating components can drive the multiple rotating shafts 189 to rotate synchronously, realizing the adjustment of the size of the light-transmitting hole 21.

[0041] As Figures 1 - 8 shown, each positioning component includes two positioning holes 33, two balls 34, two mounting seats 35, two cross plates 36, and two springs 38;

[0042] The two positioning holes 33 are respectively located on both sides of a filter 29 and are both opened on the surface of the mounting plate 30. A mounting seat 35 is provided on the side of each positioning hole 33 away from the mounting plate 30. A ball 34 matching the positioning hole 33 is provided on each mounting seat 35;

[0043] One end of the mounting seat 35 away from the ball 34 is fixed with a telescopic rod 37. The other end of the telescopic rod 37 is fixedly connected to a cross plate 36. Each cross plate 36 is fixed on the mounting cover 12. Each spring 38 is sleeved on the outside of a telescopic rod 37. Both ends of each spring 38 are respectively connected to a cross plate 36 and a mounting seat 35;

[0044] In the initial state, each ball 34 is inserted into the interior of a positioning hole 33. Here, the spring 38 is in a compressed but not fully compressed state. When it is necessary to adjust the position of the mounting plate 30, the mounting plate 30 is pulled. At this time, the ball 34 is separated from the positioning hole 33, and the spring 38 is compressed again. As the mounting plate 30 moves, until a positioning hole 33 moves below the next ball 34, under the action of the spring 38, the ball 34 is inserted into the interior of the positioning hole 33 again. At this time, another filter 29 can move to one side of the through hole 41, and the replacement and adjustment of one filter 29 can be realized. At the same time, through the insertion between the positioning hole 33 and the ball 34, the mounting plate 30 after adjusting the position can be fixed again.

[0045] As Figures 1 - 8 shown, two sliding grooves 31 are symmetrically formed on one side of the mounting plate 30 close to the housing 11. The two sliding grooves 31 are respectively located on the upper and lower sides of a plurality of filters 29, that is, the sliding grooves 31 do not block the filters 29. Two limiting strips 32 matched with the sliding grooves 31 are symmetrically fixed on the inner wall of the mounting cover 12. Each limiting strip 32 is inserted and slidably arranged in the interior of a sliding groove 31. By using the sliding connection between the sliding groove 31 and the limiting strip 32, the guiding effect on the movement of the mounting plate 30 can be realized, and the stability and precision during the movement of the mounting plate 30 can be increased.

[0046] As Figures 1 - 8 shown, two through holes 39 are symmetrically formed on the left and right sides of the mounting cover 12. The shape of each through hole 39 matches the cross-sectional shape of the mounting plate 30. When moving the mounting plate 30, the through hole 39 can play a role of avoidance, facilitating the mounting plate 30 to pass through. Pulling rings 40 are fixed at both ends of the mounting plate 30. Each pulling ring 40 passes through the through hole 39. The setting of the pulling rings 40 facilitates pulling the mounting plate 30 to move and realizing the adjustment of the position of the mounting plate 30.

[0047] As Figures 1 - 8 shown, each rotating assembly includes a belt 20, a first bevel gear 22, a second bevel gear 23 and a plurality of belt pulleys 19;

[0048] A pulley 19 is fixed to one end of each rotating shaft 18 away from the baffle 17. The pulley 19 and the rotating shaft 18 are fixedly connected. When the pulley 19 rotates, it can drive the rotating shaft 18 to rotate synchronously. The belt 20 is sleeved on multiple pulleys 19. A first bevel gear 22 is fixed to one side of one of the pulleys 19. The second bevel gear 23 is rotatably arranged on the housing 11, and the second bevel gear 23 meshes with the first bevel gear 22. When the driving component works, the driving component can drive the second bevel gear 23 to rotate. Since the second bevel gear 23 meshes with the first bevel gear 22, when the second bevel gear 23 rotates, it can drive the first bevel gear 22 to rotate. Through the rotating shaft 18, the pulley 19 located on one side of the first bevel gear 22 can rotate. Under the action of the belt 20, multiple pulleys 19 can rotate synchronously, and then multiple rotating shafts 18 can be driven to rotate synchronously, so that multiple baffles 17 can rotate simultaneously, realizing the adjustment of the size of the light-transmitting hole 21.

[0049] As Figures 1 - 8 shown, the driving component includes a fixed shell 27, a smooth rod 26, two worm wheels 24 and two worm shafts 25. The fixed shell 27 is fixed to the top surface of the housing 11. The top end of each second bevel gear 23 extends into the interior of the fixed shell 27 and is fixedly connected to a worm wheel 24. Specifically, the shaft of the second bevel gear 23 passes through the housing 11 and is rotatably connected to the housing 11. Each worm shaft 25 is located on one side of a worm wheel 24 and meshes with the worm wheel 24. The smooth rod 26 passes through the two worm shafts 25 and both ends are rotatably arranged on the fixed shell 27. When it is necessary to rotate the second bevel gear 23, the smooth rod 26 is rotated. The smooth rod 26 can drive the two worm shafts 25 to rotate. Since each worm shaft 25 meshes with a worm wheel 24, when the worm shaft 25 rotates, it can drive the worm wheel 24 to rotate, and then can drive the second bevel gear 23 coaxially connected to the worm wheel 24 to rotate, so that multiple baffles 17 on the two mounting rings 15 can rotate synchronously, realizing the synchronous adjustment of the sizes of the two light-transmitting holes 21.

[0050] As Figures 1 - 8 shown, both ends of the smooth rod 26 pass through the fixed shell 27 and a knob 28 for easy rotation is fixed. The setting of the knob 28 can increase the friction force at both ends of the smooth rod 26 and facilitate the rotation of the smooth rod 26;

[0051] As Figures 1 - 8 shown, a light homogenizing plate 14 is installed inside the housing 11 away from the mounting cover 12. The light homogenizing plate 14 can make the light source display evenly and keep the intensity of the light irradiation within the controlled range;

[0052] The light homogenizing plate 14 is a prior art. Its main principle is to deflect and rotate the light at a certain angle through multiple reflections or transmissions, so as to achieve the uniform distribution of the light.

[0053] As Figures 1 - 8As shown, a lens 13 is installed at one end of the installation cover 12 away from the housing 11, and the lens 13 is made of a transparent material.

[0054] The beneficial effects of the present utility model are specifically embodied in the above. The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An optical filter module device for a high temperature vacuum contact angle measuring instrument, comprising a housing (11), characterized in that: It also includes an aperture adjustment mechanism and a filter adjustment mechanism; The light filtering adjustment mechanism comprises a mounting cover (12), a mounting plate (30), a plurality of filters (29) and a plurality of positioning components, wherein the mounting cover (12) is mounted on one end of a housing (11), the mounting plate (30) is slidably arranged inside the mounting cover (12), the plurality of filters (29) are equidistantly arranged on the surface of the mounting plate (30), each positioning component is located on both sides of a filter (29), and each positioning component is located between the mounting cover (12) and the mounting plate (30); The aperture adjustment mechanism comprises a driving assembly, two mounting rings (15), two rotating assemblies and a plurality of baffles (17); the two mounting rings (15) are mounted in parallel inside a housing (11); a plurality of rotating shafts (18) are equidistantly arranged on each mounting ring (15); one end of each baffle (17) is fixedly connected to one end of the rotating shaft (18); each rotating assembly is located between the plurality of rotating shafts (18) on the same mounting ring (15); and the driving assembly is mounted between the housing (11) and the two rotating assemblies.

2. The optical filter module device for a high temperature vacuum contact angle measuring instrument according to claim 1, characterized in that: Each positioning assembly comprises two positioning holes (33), two balls (34), two mounting seats (35), two transverse plates (36) and two springs (38); Two positioning holes (33) are respectively located on both sides of a filter (29) and are both opened on the surface of the mounting plate (30); a mounting seat (35) is provided on a side of each positioning hole (33) away from the mounting plate (30); and a ball (34) is provided on each mounting seat (35) that matches the positioning hole (33); A telescopic rod (37) is fixed to one end of the mounting seat (35) away from the ball (34), and the other end of the telescopic rod (37) is fixedly connected to a transverse plate (36). Each transverse plate (36) is fixed to the mounting cover (12). Each spring (38) is sleeved on the outside of a telescopic rod (37), and both ends of each spring (38) are respectively connected to a transverse plate (36) and a mounting seat (35).

3. The optical filter module device for a high temperature vacuum contact angle measuring instrument according to claim 2, characterized in that: Two slide grooves (31) are symmetrically provided on one side of the mounting plate (30) close to the housing (11), and the two slide grooves (31) are respectively located on the upper and lower sides of the plurality of filters (29). Two limit bars (32) matching with the slide grooves (31) are symmetrically fixed on the inner wall of the mounting cover (12), and each limit bar (32) is plugged and slidably arranged inside a slide groove (31).

4. The optical filter module device for a high temperature vacuum contact angle measuring instrument according to claim 3, characterized in that: Two through holes (39) are symmetrically formed on the left and right sides of the mounting cover (12), and the shape of each through hole (39) matches the cross-sectional shape of the mounting plate (30). Pull rings (40) are fixed at both ends of the mounting plate (30).

5. The optical filter module device for a high temperature vacuum contact angle measuring instrument according to claim 4, characterized in that: Each rotating assembly includes a belt (20), a first bevel gear (22), a second bevel gear (23) and a plurality of pulleys (19); A pulley (19) is fixed to one end of each rotating shaft (18) away from the baffle (17), and a belt (20) is sleeved on the plurality of pulleys (19). A first bevel gear (22) is fixed to one side of one of the pulleys (19), and a second bevel gear (23) is rotatably arranged on the housing (11), and the second bevel gear (23) is meshed with the first bevel gear (22).

6. The optical filter module device for a high temperature vacuum contact angle measuring instrument according to claim 5, characterized in that: A through hole (16) is formed in the middle of the mounting ring (15) for light to pass through, and light-transmitting holes (21) are formed between the plurality of baffles (17) for light to pass through.

7. The optical filter module device for a high temperature vacuum contact angle measuring instrument according to claim 6, characterized in that: The driving assembly comprises a fixed shell (27), a polished rod (26), two worm wheels (24) and two worms (25); the fixed shell (27) is fixed to the top surface of the outer shell (11); the top of each second bevel gear (23) extends into the interior of the fixed shell (27) and is fixedly connected to a worm wheel (24); each worm wheel (25) is located on one side of a worm wheel (24) and meshes with the worm wheel (24); the polished rod (26) passes through the two worm wheels (25) and both ends are rotatably arranged on the fixed shell (27).

8. The optical filter module device for a high temperature vacuum contact angle measuring instrument according to claim 7, characterized in that: Both ends of the polished rod (26) pass through the fixed housing (27) and are fixed with a knob (28) for easy rotation.

9. The optical filter module device for a high temperature vacuum contact angle measuring instrument according to claim 8, characterized in that: A light-distributing sheet (14) is installed inside the housing (11) away from the installation cover (12).

10. The optical filter module device for a high temperature vacuum contact angle measuring instrument according to claim 9, characterized in that: A lens (13) is mounted on one end of the mounting cover (12) away from the housing (11).

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