Granulation analyzer lens with protection structure

Abstract

The utility model relates to the technical field of laser particle size analyzers, in particular to a particle size analyzer lens with a protection structure, which comprises a box body, a detector array, a laser device, a Fourier lens, a sample pool, a collimating lens and a microscope objective, the laser device is fixedly arranged on the inner wall of the left side of the box body, and the detector array is fixedly arranged on the inner wall of the right side of the box body; the driving motor drives the rotating shaft to rotate, the linkage assembly drives the multiple sets of driving assemblies to drive the U-shaped protection frames, the front U-shaped protection frame and the rear U-shaped protection frame move oppositely through the driving assemblies, and the structure can control the front U-shaped protection frame and the rear U-shaped protection frame to be synchronously closed towards the middle at the same time; therefore, the Fourier lens, the collimating lens and the microscope objective in the box body can be protected at the same time, and the structure is simple in operation and better in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of laser particle size analyzers, in particular to a particle size analyzer lens with a protection structure. Background Art

[0002] Patent Publication No.: CN213779819U discloses a laser particle size analyzer lens with a protective structure, which relates to the field of laser particle size analyzer technology. The laser particle size analyzer lens with a protective structure includes a particle size analyzer body, the bottom of the inner wall of the particle size analyzer body is fixedly connected to a Fourier transform lens device, the Fourier transform lens device includes a protective base, the top of the protective base is fixedly connected to a Fourier transform lens, the left side of the inner wall of the protective base is slidably connected to a No. 1 light shielding plate, and the right side of the inner wall of the protective base is slidably connected to a No. 2 light shielding plate. The utility model controls the rotation of the threaded rod by a knob, drives the sliding nut to move upward, and at the same time drives the No. 1 light shielding plate and the No. 2 light shielding plate to move upward until they are engaged with the two spherical self-resetting clamping rods at the bottom of the No. 3 light shielding plate. The Fourier transform lens is sealed by the No. 1 light shielding plate, the No. 2 light shielding plate, and the No. 3 light shielding plate, thereby effectively protecting the Fourier transform lens when the particle size analyzer body is not in use.

[0003] The existing laser particle size analyzer has multiple groups of lenses with different functions. The existing protection device can only protect one type of lens, and the other lenses cannot be effectively protected. Therefore, it needs to be improved. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the deficiencies in the prior art, the utility model provides a particle size analyzer lens with a protective structure.

[0006] (2) Technical solution

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a particle size analyzer lens with a protective structure, comprising a box, a detector array, a laser, a Fourier lens, a sample cell, a collimator and a microscope objective lens, characterized in that: a laser is fixedly arranged on the left inner wall of the box, a detector array is fixedly arranged on the right inner wall of the box, a positioning plate 1, a positioning plate 2, a sample cell and a positioning plate 3 are fixedly arranged between the upper and lower inner walls of the box from left to right, a microscope objective lens is embedded on the positioning plate 1, a collimator is embedded on the positioning plate 2, a Fourier lens is embedded on the positioning plate 3, and the upper and lower inner walls of the box are fixedly arranged with a laser. A positioning plate four is fixedly arranged between them, a pinhole is arranged on the positioning plate four, the positioning plate four is located between the positioning plate one and the positioning plate two, the positioning plate one, the positioning plate two and the positioning plate three are the same size, and the positioning plate one, the positioning plate two and the positioning plate three are all provided with a protection component, the protection component includes a U-shaped protection frame, the positioning plate one, the positioning plate two and the positioning plate three are sliding forward and backward with a U-shaped protection frame, the front and rear U-shaped protection frames cooperate with each other, the U-shaped protection frame grooves are adapted to the positioning plate one, the positioning plate two and the positioning plate three, a driving component is provided on the positioning plate three, and a linkage component is provided on the outer wall of the box body.

[0008] In order to facilitate the movement of the driving protection component, the improvements of the utility model are that the driving component includes a connecting shaft and a screw, and rotating holes are provided between the front and rear walls of positioning plate 1, positioning plate 2 and positioning plate 3. A connecting shaft is arranged to rotate in the rotating hole, and screws are symmetrically fixed at the front and rear ends of the connecting shaft. Screw holes are provided on the U-shaped protection frame, and the screws are threadedly connected to the screw holes.

[0009] In order to facilitate the synchronous movement of multiple groups of protection components, the improvements of the utility model are that the linkage component includes a worm gear, a rotating shaft, a fixed frame and a worm, a worm gear is rotatably provided on the rear side wall of the box body corresponding to the driving component, the worm gear is connected to the adjacent screw, and fixed frames are fixedly provided on the outer wall of the box body on both sides of the worm gear, a rotating shaft is rotatably provided between the fixed frames on both sides, a worm gear is fixedly provided on the rotating shaft at a position corresponding to the worm gear, and the worm gear is meshed with the worm gear.

[0010] In order to facilitate the driving of the rotating shaft, the improvement of the utility model further includes a driving motor. The driving motor is fixedly arranged on the left outer wall of the box body, and the output end of the driving motor is connected to the rotating shaft.

[0011] Preferably, the present invention is improved in that a protective shell is fixedly provided at the outer wall of the box body and the corresponding positions of the worm wheel, the rotating shaft, the rotating shaft and the worm.

[0012] In order to facilitate the stability of the movement of the U-shaped protective frame, the improvements of the present invention are that guide rods are fixedly provided on the left and right sides of positioning plate 1, positioning plate 2 and positioning plate 3, and guide grooves are provided at positions corresponding to the inner wall of the U-shaped protective frame and the guide rods, and the guide rods are slidably connected to the guide grooves.

[0013] Preferably, the present invention is improved in that multiple groups of guide rods are provided and are symmetrically distributed up and down.

[0014] (3) Beneficial effects

[0015] Compared with the prior art, the present invention provides a particle size analyzer lens with a protective structure, which has the following beneficial effects:

[0016] The particle size analyzer lens with a protective structure is driven by a driving motor to drive a rotating shaft to rotate, so that a linkage component drives multiple groups of driving components to drive the U-shaped protective frame. The front and rear U-shaped protective frames move toward each other through the driving components. This structure can simultaneously control the front and rear U-shaped protective frames to close synchronously toward the middle, thereby simultaneously protecting the Fourier lens, collimating lens and microscope objective lens groups in the box. This structure is simple to operate and has better practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the utility model;

[0018] Figure 2 For this utility model Figure 1 Schematic diagram of the structure from another perspective;

[0019] Figure 3 This is a schematic cross-sectional view of the local structure of the utility model;

[0020] Figure 4 For this utility model Figure 3 Schematic diagram of the structure from another perspective;

[0021] Figure 5 For this utility model Figure 4 Schematic diagram of the structure from another perspective.

[0022] In the figure: 1. Box; 2. Protective shell; 4. Positioning plate 1; 5. Positioning plate 2; 6. Positioning plate 3; 7. Laser; 8. Positioning plate 4; 9. Sample cell; 10. Detector array; 11. U-shaped protective frame; 12. Guide rod; 13. Connecting shaft; 14. Screw; 15. Worm gear; 16. Rotating shaft; 17. Fixed frame; 18. Drive motor; 19. Fourier lens; 20. Collimating lens; 21. Microscope objective lens; 22. Worm. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-5 , a particle size analyzer lens with a protective structure, including a box 1, a detector array 10, a laser 7, a Fourier lens 19, a sample cell 9, a collimator 20 and a microscope objective lens 21, characterized in that: the laser 7 is fixedly arranged on the left inner wall of the box 1, the detector array 10 is fixedly arranged on the right inner wall of the box 1, a positioning plate 1 4, a positioning plate 2 5, a sample cell 9 and a positioning plate 3 6 are fixedly arranged between the upper and lower inner walls of the box 1 from left to right, the microscope objective lens 21 is embedded on the positioning plate 1 4, the collimator 20 is embedded on the positioning plate 2 5, the Fourier lens 19 is embedded on the positioning plate 3 6, and the upper and lower inner walls of the box 1 are fixedly arranged Positioning plate four 8, a pinhole is provided on the positioning plate four 8, the positioning plate four 8 is located between the positioning plate one 4 and the positioning plate two 5, the positioning plate one 4, the positioning plate two 5 and the positioning plate three 6 are the same size, the positioning plate one 4, the positioning plate two 5 and the positioning plate three 6 are provided with a protection component, the protection component includes a U-shaped protection frame 11, the positioning plate one 4, the positioning plate two 5 and the positioning plate three 6 are provided with a U-shaped protection frame 11 for sliding forward and backward, the front and rear U-shaped protection frames 11 cooperate with each other, the grooves of the U-shaped protection frame 11 are adapted to the positioning plate one 4, the positioning plate two 5 and the positioning plate three 6, a driving component is provided on the positioning plate three 6, and a coupling is provided on the outer wall of the box body 1 The U-shaped protective frames 11 on the front and rear sides of the positioning plate 1 4, the positioning plate 2 5 and the positioning plate 3 6 are moved synchronously. When the front and rear U-shaped protective frames 11 move toward the middle and close, the Fourier lens 19, the collimator 20 and the microscope objective lens 21 can be protected. When the front and rear U-shaped protective frames 11 are opened, the front and rear U-shaped protective frames 11 are in contact with the front and rear inner walls of the box 1 respectively, which can block excess light sources and transport the powder into the sample pool 9 through the sample circulation system. It should be noted that the sample circulation system consists of an air compressor, a high-pressure air bag, and a sample The powder material in the sample box is blown into the sample pool 9 by high-pressure gas, and is discharged at the bottom of the sample pool 9 for circulation. The sample circulation system is well known to those skilled in the art and is therefore not described in detail. The light emitted by the laser 7 passes through the microscope objective lens 21, the pinhole, the collimator lens 20, the sample pool 9 and the Fourier lens 19 in turn, and is finally projected onto the detector array 10. The detector array 10 transmits the detection signal to the signal converter and the computer end. This structure can synchronously protect the Fourier lens 19, the collimator lens 20 and the microscope objective lens 21 when not in use, and is simple to operate and has better usability.

[0025] See also Figure 3The above-mentioned driving assembly can be any one type. The present application provides an embodiment, in which the driving assembly includes a connecting shaft 13 and a screw 14. Rotary holes are provided between the front and rear walls of the positioning plate 1 4, the positioning plate 2 5 and the positioning plate 3 6. The connecting shaft 13 is rotatably provided in the rotary hole. The front and rear ends of the connecting shaft 13 are symmetrically fixed with screws 14. Screw holes are provided on the U-shaped protective frame 11. The screws 14 are threadedly connected to the screw holes. The rotation of the connecting shaft 13 drives the front and rear screws 14 to drive the U-shaped protective frame 11, so that the front and rear U-shaped protective frames 11 move synchronously.

[0026] See also Figure 4 The above-mentioned linkage assembly can be any one type. The present application provides an embodiment, in which the linkage assembly includes a worm gear 15, a rotating shaft 16, a fixing frame 17 and a worm 22. A worm gear 15 is rotatably provided on the rear side wall of the box body 1 at a position corresponding to the driving assembly. The worm gear 15 is connected to the adjacent screw 14. The outer wall of the box body 1 is fixedly provided with fixing frames 17 on both sides of the worm gear 15. A rotating shaft 16 is rotatably provided between the fixing frames 17 on both sides. A worm 22 is fixedly provided on the rotating shaft 16 at a position corresponding to the worm gear 15. The worm 22 is meshed with the worm gear 15. When the rotating shaft 16 rotates, the worm gear 15 can be synchronously driven to rotate by multiple groups of worms 22, so that multiple groups of driving assemblies can be rotated synchronously, so that the front and rear U-shaped protection frames 11 of the positioning plate 1 4, the positioning plate 2 5 and the positioning plate 3 6 can synchronously protect the Fourier lens 19, the collimating lens 20 and the microscope objective lens 21.

[0027] See also Figure 4 Furthermore, it also includes a drive motor 18. The drive motor 18 is fixedly provided on the left outer wall of the box body 1. The output end of the drive motor 18 is connected to the rotating shaft 16. The addition of the drive motor 18 facilitates the rotation of the rotating shaft 16.

[0028] See also Figure 2 Furthermore, a protective shell 2 is fixedly provided at the outer wall of the box body 1 and the corresponding positions of the worm gear 15, the rotating shaft 16, the rotating shaft 16 and the worm 22. By adding the protective shell 2, the structures at the worm gear 15, the rotating shaft 16, the fixing frame 17 and the worm 22 can be protected.

[0029] See also Figure 4 Furthermore, guide rods 12 are fixedly provided on the left and right sides of positioning plate 1 4, positioning plate 2 5 and positioning plate 3 6. Guide grooves are provided on the inner wall of the U-shaped protective frame 11 at positions corresponding to the guide rods 12. The guide rods 12 are slidably connected to the guide grooves. The U-shaped protective frame 11 slides on the guide rods 12 through the guide grooves, which can make the movement of the U-shaped protective frame 11 more stable.

[0030] Furthermore, multiple groups of guide rods 12 are provided and symmetrically distributed up and down. The guide rods 12 provided up and down further improve the stability of the movement of the U-shaped protection frame 11 and prevent the U-shaped protection frame 11 from tilting during movement.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A particle size analyzer lens with a protective structure, comprising a housing (1), a detector array (10), a laser (7), a Fourier lens (19), a sample cell (9), a collimator (20), and a microscope objective lens (21), characterized in that: A laser (7) is fixedly provided on the left inner wall of the box (1), a detector array (10) is fixedly provided on the right inner wall of the box (1), a positioning plate 1 (4), a positioning plate 2 (5), a sample pool (9) and a positioning plate 3 (6) are fixedly provided between the upper and lower inner walls of the box (1) from left to right, a microscope objective lens (21) is embedded on the positioning plate 1 (4), a collimating lens (20) is embedded on the positioning plate 2 (5), a Fourier lens (19) is embedded on the positioning plate 3 (6), a positioning plate 4 (8) is fixedly provided between the upper and lower inner walls of the box (1), a pinhole is provided on the positioning plate 4 (8), and the positioning plate 4 (8) is located between the positioning plate 1 (4) and the positioning plate 2 (5), the positioning plate one (4), the positioning plate two (5) and the positioning plate three (6) have the same size, and the positioning plate one (4), the positioning plate two (5) and the positioning plate three (6) are all provided with a protection component, the protection component including a U-shaped protection frame (11), the positioning plate one (4), the positioning plate two (5) and the positioning plate three (6) are provided with a U-shaped protection frame (11) for sliding forward and backward, the front and rear U-shaped protection frames (11) cooperate with each other, the grooves of the U-shaped protection frame (11) are adapted to the positioning plate one (4), the positioning plate two (5) and the positioning plate three (6), a driving component is provided on the positioning plate three (6), and a linkage component is provided on the outer wall of the box body (1).

2. The particle size analyzer lens with a protective structure according to claim 1, characterized in that: The driving assembly includes a connecting shaft (13) and a screw rod (14). A rotating hole is provided between the front and rear walls of the positioning plate 1 (4), the positioning plate 2 (5) and the positioning plate 3 (6). The connecting shaft (13) is rotatably provided in the rotating hole. The screw rods (14) are symmetrically fixed at the front and rear ends of the connecting shaft (13). A screw hole is provided on the U-shaped protection frame (11), and the screw rods (14) are threadedly connected to the screw hole.

3. The particle size analyzer lens with a protective structure according to claim 1, characterized in that: The linkage assembly comprises a worm gear (15), a rotating shaft (16), a fixing frame (17) and a worm (22); a worm gear (15) is rotatably provided on a rear side wall of the box body (1) at a position corresponding to the driving assembly; the worm gear (15) is connected to an adjacent screw (14); a fixing frame (17) is fixedly provided on an outer wall of the box body (1) at both sides of the worm gear (15); a rotating shaft (16) is rotatably provided between the fixing frames (17) on both sides; a worm gear (22) is fixedly provided on the rotating shaft (16) at a position corresponding to the worm gear (15); and the worm gear (22) is meshed with the worm gear (15).

4. The particle size analyzer lens with a protective structure according to claim 3, characterized in that: The box body (1) further comprises a driving motor (18), the driving motor (18) being fixedly arranged on the left outer wall of the box body (1), and the output end of the driving motor (18) being connected to the rotating shaft (16).

5. The particle size analyzer lens with a protective structure according to claim 3, characterized in that: A protective shell (2) is fixedly provided at positions corresponding to the outer wall of the box body (1), the worm wheel (15), the rotating shaft (16), the rotating shaft (16), and the worm (22).

6. The particle size analyzer lens with a protective structure according to claim 1, characterized in that: Guide rods (12) are fixedly provided on the left and right sides of the positioning plate 1 (4), the positioning plate 2 (5) and the positioning plate 3 (6); guide grooves are provided at positions corresponding to the inner wall of the U-shaped protection frame (11) and the guide rods (12); and the guide rods (12) are slidably connected to the guide grooves.

7. The particle size analyzer lens with a protective structure according to claim 6, characterized in that: The guide rods (12) are provided in multiple groups and are symmetrically distributed up and down.

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