A filter self-switching infrared spectrometer

Abstract

The application discloses a filter self-switching infrared spectrometer and belongs to the technical field of infrared spectrometers. The filter self-switching infrared spectrometer comprises an infrared spectrometer body and a protective cover installed on the infrared spectrometer body. A sample disc is installed in the infrared spectrometer body, and the side of the sample disc is provided with a supporting side plate fixed on the infrared spectrometer body. A filter disc is installed in the middle of the supporting side plate, and a filter substrate is connected to the filter disc. A transmission inserting rod is connected to the middle of the filter disc through a first one-way bearing, and a positioning column is fixed to the end of the transmission inserting rod away from the filter disc. The bent part on the locking piece is inserted into the hole in the back of the infrared spectrometer body. The filter self-switching infrared spectrometer can adjust the shielding area of the filter, control the intensity and wavelength range of the light entering the spectrometer, improve the measurement accuracy and precision, and shield the filter that is not needed to be used.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of infrared spectrometers, in particular to a filter self-switching infrared spectrometer. BACKGROUND

[0002] The infrared spectrometer is an instrument for analyzing molecular structure and chemical composition by using the absorption characteristics of substances to different wavelengths of infrared radiation. The infrared spectrometer usually consists of a light source, a filter, a monochromator, a detector, and a computer information processing system.

[0003] For example, the patent with the patent number CN219320070U and the patent name "Infrared Spectrometer Filter Wheel Adjusting Mechanism" was announced on July 7, 2023. It includes a spectral disc, a servo motor connected to the center shaft of the middle part of the spectral disc, a control circuit connected to the input end of the servo motor, a filter channel equally spaced on the surface of the spectral disc, a filter assembly installed on the inner side of the filter channel, and a filter assembly including two filters, a pressure ring between the two filters, and a sealing ring on the front filter. The above prior art may have the following technical problems:

[0004] The filter of the existing infrared spectrometer is switched by rotating the spectral disc for adjustment, but the spectral disc is not convenient to change the shielding area of the filter according to actual needs during use, which reduces the diversity demand of the infrared spectrometer. At the same time, multiple filters are used for switching, which is not convenient for shielding and protecting the remaining idle filters during use, resulting in long-term exposure of the filters, which easily causes dust and other impurities to adhere to the surface, affecting the light transmittance during subsequent use.

[0005] Therefore, we propose a filter self-switching infrared spectrometer to solve the problems mentioned above. SUMMARY

[0006] The present application aims to provide a filter self-switching infrared spectrometer to solve the problems mentioned in the background art.

[0007] In order to achieve the above object, the present application provides the following technical scheme: a filter self-switching infrared spectrometer, comprising an infrared spectrometer body and a protective cover installed on the infrared spectrometer body, the inside of the infrared spectrometer body is installed with a sample disc, and the side of the sample disc is provided with a support side plate fixed on the infrared spectrometer body, the middle part of the support side plate is installed with a filter disc, and the filter disc is connected with a filter substrate, the middle part of the filter disc is connected with a transmission plug rod through a first one-way bearing, and the end of the transmission plug rod away from the filter disc is fixed with a positioning column, the positioning column is inserted with a locking piece, and the bending part of the locking piece is inserted into the hole in the back of the infrared spectrometer body, the filter substrate on the filter disc is installed with a protective shielding part on the side of the front and back surfaces, and the protective shielding part is used for shielding and protecting the filter substrate during the empty slot period, and the side of the support side plate is installed with a power opening and closing part for opening the protective shielding part.

[0008] Preferably, the filter disc can rotate in the middle part of the support side plate, and four filter substrates are uniformly distributed at equal angles on the filter disc, and the filter rates of each filter substrate are different.

[0009] By adopting the above technical scheme, the filter substrate on the filter disc can be driven to rotate synchronously by rotating the filter disc, and the automatic switching of the filter substrate is realized by rotating the filter disc.

[0010] Preferably, the outer side of the positioning column and the inner wall of the middle part of the locking piece are matched with each other, the longitudinal section of the positioning column is arranged in a rectangular structure, and the bending part of the locking piece and the inner wall of the hole in the back of the infrared spectrometer body are matched with each other.

[0011] By adopting the above technical scheme, the position of the transmission plug rod can be fixed by inserting the locking piece into the positioning column and inserting the bending part of the locking piece into the hole in the back of the infrared spectrometer body.

[0012] Preferably, the protective shielding part comprises a shielding block, and the side of the shielding block facing the filter substrate is fixed with cleaning cotton, the side of the shielding block is fixed with a pressure blocking rod, the inside of the shielding block is provided with a containing groove, a limiting rod is inserted into the containing groove, the limiting rod is fixed on the filter disc, the end of the limiting rod extending out of the containing groove is connected with the shielding block through an auxiliary spring, the shielding block is provided with an air outlet, and the inner side of the end of the pressure blocking rod away from the shielding block is arranged as an inclined surface.

[0013] By adopting the above technical scheme, the shielding block can be reset and rebound after moving on the limiting rod through the setting of the auxiliary spring.

[0014] Preferably, the shielding blocks are symmetrically arranged about the central axis of the light filtering substrate, and the symmetrically distributed shielding blocks shield the light filtering substrate in the initial state, and the cleaning cotton on the shielding blocks is in close contact with the surface of the light filtering substrate.

[0015] By using the above technical scheme, the symmetrically distributed shielding blocks can protect the light filtering substrate, and the cleaning cotton can clean the dust attached to the surface of the light filtering substrate when the shielding blocks move.

[0016] Preferably, the outer wall of the one end of the limiting rod inserted into the accommodating groove is in close contact with the inner wall of the accommodating groove, and the one end of the limiting rod inserted into the accommodating groove is wrapped with a sealing ring in the circumferential direction, and the accommodating groove is in communication with the outside through the air outlet hole, and the air outlet end of the air outlet hole is inclinedly arranged towards the light filtering substrate.

[0017] By using the above technical scheme, the sealing ring wrapped around the end of the limiting rod can improve the sealing between the end of the limiting rod and the accommodating groove.

[0018] Preferably, the power opening and closing component comprises a second one-way bearing mounted on the transmission plug rod, and a linkage half gear connected to the back of the infrared spectrometer body is mounted on the outer side of the second one-way bearing, the outer side of the linkage half gear is provided with an engaging tooth rack, one end of the engaging tooth rack away from the linkage half gear is fixed with a pressing block, and a sealing plate is mounted on the engaging tooth rack and used to seal the sliding groove provided on the back of the infrared spectrometer body for the movement of the engaging tooth rack.

[0019] By using the above technical scheme, the sealing plate can prevent the sliding groove on the back of the infrared spectrometer body from being exposed, so that dust and other impurities from the outside enter the inside of the spectrometer.

[0020] Preferably, the locking directions of the second one-way bearing and the first one-way bearing are opposite, the linkage half gear on the outer side of the second one-way bearing is in meshing connection with the engaging tooth rack, and the engaging tooth rack can slide on the infrared spectrometer body.

[0021] By using the above technical scheme, the locking directions of the first one-way bearing and the second one-way bearing are opposite, so that when the transmission plug rod drives the light filtering disc to rotate through the first one-way bearing, the second one-way bearing will not drive the linkage half gear to rotate.

[0022] Preferably, the longitudinal section of the pressing block is in isosceles trapezoidal structure, and the inclined surface of the pressing block can press the inclined surface of the end of the pressed blocking rod after moving.

[0023] By using the above technical scheme, the pressing block can press the pressed blocking rod to move synchronously with the shielding block.

[0024] Compared with the prior art, the present invention has the following beneficial effects: the filter self-switching infrared spectrometer controls the intensity and wavelength range of light entering the spectrometer by adjusting the blocking area of ​​the filter, thereby improving the measurement precision and accuracy, and can also block unnecessary filters;

[0025] 1. A filter disc is provided. The rotation of the transmission rod can utilize the one-way locking characteristics of the first one-way bearing to drive the filter disc to rotate synchronously. The rotation of the filter disc can make the filter substrate rotate synchronously, thereby realizing automatic switching and adjustment of the filter substrate;

[0026] 2. A shielding block is provided. The shielding block is provided on the surface of the filter substrate. In the initial state, the shielding block is used to shield and protect the filter substrate, so that the filter substrate is protected from dust when the infrared spectrometer body is not working. At the same time, the subsequent movement of the shielding block can drive the cleaning cotton to move synchronously, and the movement of the cleaning cotton can clean the dust attached to the surface of the filter substrate;

[0027] 3. An air outlet is provided. After the extrusion block moves to squeeze and push the pressure blocking rod, the movement of the pressure blocking rod can drive the blocking block to move synchronously. After the blocking block moves on the limiting rod, the air flow inside the accommodating groove can be squeezed outward through the air outlet through the limiting rod. The air flow ejected from the air outlet toward the surface of the filter substrate can improve the cleaning effect of the filter substrate. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the front three-dimensional structure of the present invention;

[0029] Figure 2 This is a schematic diagram of the back three-dimensional structure of the present invention;

[0030] Figure 3 Schematic diagram of the structure of the filter disc and protective shielding component of the present invention;

[0031] Figure 4 Schematic diagram of the structure of the filter disc and filter substrate of the present invention;

[0032] Figure 5 This is a schematic diagram of the supporting side plate and extrusion block structure of the present invention;

[0033] Figure 6 This is a schematic diagram of the shielding block and cleaning cotton structure of the present invention;

[0034] Figure 7 For the present invention Figure 2 A in the middle is an enlarged structural diagram;

[0035] Figure 8 This is a schematic diagram of the shielding block and the air outlet structure of the present invention;

[0036] Figure 9 Figure 1 is a schematic view of the accommodating groove and the limiting rod structure of the present application.

[0037] In the figure: 1, infrared spectrometer body; 2, protective cover; 3, sample disc; 4, support side plate; 5, filter disc; 6, first one-way bearing; 7, transmission plug rod; 8, positioning column; 9, locking piece; 10, protective shielding component; 101, shielding block; 102, cleaning cotton; 103, pressure blocking rod; 104, accommodating groove; 105, limiting rod; 106, air outlet hole; 107, auxiliary spring; 11, power opening and closing component; 111, second one-way bearing; 112, linkage half gear; 113, engagement rack; 114, extrusion block; 115, sealing plate; 12, filter substrate. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0039] Embodiment one: please refer to Figures 1-9The existing infrared spectrometer is inconvenient to shield the remaining idle filter during use of the filter, thereby causing the filter to be exposed for a long time, causing dust and other impurities to easily adhere to the surface, and affecting the light transmittance during subsequent use. In order to solve the technical problem, the embodiment discloses the following technical content. A filter self-switching infrared spectrometer, comprising an infrared spectrometer body 1 and a protective cover 2 installed on the infrared spectrometer body 1, a sample disc 3 is installed inside the infrared spectrometer body 1, and a support side plate 4 is fixed on the infrared spectrometer body 1 on the side of the sample disc 3, a filter disc 5 is installed in the middle of the support side plate 4, and a filter substrate 12 is connected to the filter disc 5, a transmission plug rod 7 is connected to the middle of the filter disc 5 through a first one-way bearing 6, a positioning column 8 is fixed to the end of the transmission plug rod 7 away from the filter disc 5, a locking piece 9 is inserted into the positioning column 8, and the bent part of the locking piece 9 is inserted into the hole in the back of the infrared spectrometer body 1, the filter substrate 12 on the filter disc 5 is installed with a protective shielding part 10 on the side of both the front and back surfaces, the protective shielding part 10 is used for shielding and protecting the filter substrate 12 during the idle period, a power opening and closing part 11 is installed on the side of the support side plate 4 to open the protective shielding part 10, the filter disc 5 can rotate in the middle of the support side plate 4, four filter substrates 12 are uniformly distributed at equal angles on the filter disc 5, and the light transmittance of each filter substrate 12 is different, the outer side of the positioning column 8 and the inner wall of the middle of the locking piece 9 are mutually attached, the longitudinal section of the positioning column 8 is set as a rectangular structure, the bent part of the locking piece 9 and the inner wall of the hole in the back of the infrared spectrometer body 1 are matched, the protective shielding part 10 comprises a shielding block 101, a pressure blocking rod 103 is fixed on the side of the shielding block 101, a containing groove 104 is opened in the inside of the shielding block 101, a limiting rod 105 is inserted into the containing groove 104, the limiting rod 105 is fixed on the filter disc 5, the end of the limiting rod 105 extending out of the containing groove 104 is connected with the shielding block 101 through an auxiliary spring 107, the inner side of the end of the pressure blocking rod 103 away from the shielding block 101 is set as an inclined surface, the shielding block 101 is symmetrically arranged about the central axis of the filter substrate 12, the symmetrically distributed shielding blocks 101 shield the filter substrate 12 in the initial state, the cleaning cotton 102 on the shielding block 101 is attached to the surface of the filter substrate 12, the power opening and closing part 11 comprises a second one-way bearing 111 installed on the transmission plug rod 7, a linkage half gear 112 is rotatably connected to the back of the infrared spectrometer body 1 on the outer side of the second one-way bearing 111, a matching tooth rack 113 is arranged on the outer side of the linkage half gear 112, an extrusion block 114 is fixed to the end of the matching tooth rack 113 away from the linkage half gear 112, a sealing plate 115 is installed on the matching tooth rack 113, and the sealing plate 115 is used for sealing the sliding groove opened on the back of the infrared spectrometer body 1 for the movement of the matching tooth rack 113, the locking directions of the second one-way bearing 111 and the first one-way bearing 6 are opposite,And the linkage half gear 112 outside the second one-way bearing 111 is in meshing connection with the meshing tooth rack 113, the meshing tooth rack 113 can slide on the infrared spectrometer body 1, the longitudinal section of the extrusion block 114 is provided as an isosceles trapezoidal structure, and the inclined surface of the extrusion block 114 can extrude the inclined surface of the end of the pressure block 103 after moving.

[0040] When the infrared spectrometer body 1 is used, the protective cover 2 is opened, and after the protective cover 2 is opened, the sample is placed on the sample disc 3 for detection. During detection, the transmission rod 7 can be rotated in reverse, and because the first one-way bearing 6 is in a reverse locking state, the transmission rod 7 can drive the filter disc 5 to rotate synchronously after the transmission rod 7 is rotated. The filter disc 5 can rotate synchronously, thereby changing the filter substrate 12 with different filter rates according to the actual detection requirements. At the same time, the front and back surfaces of the filter substrate 12 are shielded by the shielding block 101 in the initial state, so that the filter substrate 12 can be protected from dust by the shielding block 101 when the infrared spectrometer body 1 does not need to work. Because the locking direction of the second one-way bearing 111 is opposite to that of the first one-way bearing 6, when the filter disc 5 is rotated and adjusted, the rotation of the transmission rod 7 will not drive the linkage half gear 112 to rotate by the second one-way bearing 111. When the corresponding filter substrate 12 is rotated and switched in place, the transmission rod 7 is rotated forward, and the first one-way bearing 6 is in the active direction, so the transmission rod 7 will not drive the filter disc 5 to rotate at this time. The transmission rod 7 can drive the linkage half gear 112 to rotate by the second one-way bearing 111 after being rotated forward. After the linkage half gear 112 is rotated, the meshing connection of the meshing tooth rack 113 can drive the extrusion block 114 to move towards the center direction of the filter disc 5. The extrusion block 114 can extrude the inclined edge of the pressure block 103 on the side of the shielding block 101 after moving, and the shielding block 101 can move on the limiting rod 105 after the pressure block 103 is extruded. The shielding block 101 can remove the shielding of the filter substrate 12 after moving, so that the filter substrate 12 can be normally used. After adjustment is completed, the middle part of the locking piece 9 is inserted into the positioning column 8 at the end of the transmission rod 7, and the bending part of the locking piece 9 is also inserted into the hole in the back of the infrared spectrometer body 1 at this time, thereby realizing the position fixing of the transmission rod 7.

[0041] The technical content disclosed in this embodiment is further made on the basis of the above-mentioned embodiment one. When the filter is switched, the adjustment is realized by the rotation of the spectral disc, but the spectral disc is inconvenient to change the shielding area of the filter according to the actual needs during use, thereby reducing the diversity demand of the infrared spectrometer. Meanwhile, the switching of multiple filters is utilized. The technical content disclosed in this embodiment is that the shielding block 101 is provided with a plurality of air outlet holes 106 which are uniformly distributed on the shielding block 101. The shielding block 101 is fixed with the cleaning cotton 102 on the side facing the filter substrate 12. The outer wall of the one end of the limiting rod 105 inserted into the accommodating groove 104 is attached to the inner wall of the accommodating groove 104. The one end of the limiting rod 105 inserted into the accommodating groove 104 is wrapped with a sealing ring in the circumferential direction. The accommodating groove 104 is communicated with the outside through the air outlet hole 106. The air outlet end of the air outlet hole 106 is obliquely provided towards the direction of the filter substrate 12.

[0042] When the shielding block 101 moves to the outside of the filter substrate 12, the movement of the shielding block 101 can drive the cleaning cotton 102 to move synchronously. The movement of the cleaning cotton 102 can clean the dust and impurities attached to the surface of the filter substrate 12. Meanwhile, after the shielding block 101 moves on the limiting rod 105, the movement of the shielding block 101 can extrude the airflow in the accommodating groove 104 to the outside through the air outlet hole 106 by the limiting rod 105. The airflow extruded to the outside by the air outlet hole 106 can improve the cleaning effect of the filter substrate 12. The shielding block 101 is in a moving state, so that the movement of the shielding block 101 can make the air outlet hole 106 spray air towards different positions of the filter substrate 12. Meanwhile, the movement of the engaging toothed rack 113 can control the movement of the extrusion block 114. The movement distance of the extrusion block 114 can control the movement distance of the shielding block 101. Since the shielding block 101 is located at the side edge of the filter substrate 12, the movement distance of the shielding block 101 determines the shielding area of the filter substrate 12. In order to facilitate the rotation of the transmission rod 7 to multiple angles to be limited, a plurality of holes can be provided on the back of the infrared spectrometer body 1, so that the bent part on the locking piece 9 can be inserted.

[0043] The contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0044] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for part of the technical features, as long as they are within the spirit and principles of the present application. Any modification, equivalent replacement, improvement, etc. made within the scope of the present application shall be included in the protection scope of the present application.

Claims

1. A filter self-switching infrared spectrometer, comprising an infrared spectrometer body (1) and a protective cover (2) mounted on the infrared spectrometer body (1), wherein a sample tray (3) is mounted inside the infrared spectrometer body (1), and a supporting side plate (4) fixed to the infrared spectrometer body (1) is provided on the side of the sample tray (3), a filter disc (5) is mounted in the middle of the supporting side plate (4), and a filter substrate (12) is connected to the filter disc (5), characterized in that: The middle part of the filter disc (5) is connected to a transmission rod (7) through a first one-way bearing (6), and a positioning column (8) is fixed to the end of the transmission rod (7) away from the filter disc (5), a locking piece (9) is inserted into the positioning column (8), and the bent portion of the locking piece (9) is inserted into the hole on the back of the infrared spectrometer body (1), and the filter substrate (12) on the filter disc (5) is installed with a protective shielding component (10) on both sides of the front and back sides, and the protective shielding component (10) is used to shield the filter substrate (12) during the idle period, and the side of the supporting side plate (4) is installed with a power opening and closing component (11) for controlling the opening of the protective shielding component (10); The protective shielding component (10) includes a shielding block (101), and a cleaning cotton (102) is fixed on the side of the shielding block (101) facing the filter substrate (12), a pressure blocking rod (103) is fixed on the side of the shielding block (101), and a receiving groove (104) is provided inside the shielding block (101), a limiting rod (105) is inserted into the receiving groove (104), and the limiting rod (105) is fixed on the filter disc (5), and one end of the limiting rod (105) extending out of the receiving groove (104) is connected to the shielding block (101) through an auxiliary spring (107), and an air outlet (106) is provided on the shielding block (101), and the inner side of one end of the pressure blocking rod (103) away from the shielding block (101) is set as an inclined surface; The power opening and closing component (11) includes a second one-way bearing (111) mounted on the transmission plug rod (7), and a linkage half gear (112) rotatably connected to the back of the infrared spectrometer body (1) is mounted on the outer side of the second one-way bearing (111), a connecting gear rack (113) is provided on the outer side of the linkage half gear (112), and an extrusion block (114) is fixed to one end of the connecting gear rack (113) away from the linkage half gear (112), and a sealing plate (115) is mounted on the connecting gear rack (113), and the sealing plate (115) is used to seal a sliding groove provided on the back of the infrared spectrometer body (1) for the connecting gear rack (113) to move.

2. The filter self-switching infrared spectrometer according to claim 1, characterized in that: The filter disc (5) is capable of rotating in the middle of the supporting side plate (4), and four filter substrates (12) are evenly distributed at equal angles on the filter disc (5), and each filter substrate (12) has a different filtering rate.

3. The filter self-switching infrared spectrometer according to claim 1, characterized in that: The outer side of the positioning column (8) and the middle inner wall of the locking piece (9) fit together, the longitudinal section of the positioning column (8) is configured as a rectangular structure, and the bent portion on the locking piece (9) fits in with the inner wall of the hole on the back of the infrared spectrometer body (1).

4. The filter self-switching infrared spectrometer according to claim 1, characterized in that: The shielding blocks (101) are symmetrically arranged about the central axis of the filter substrate (12), and the symmetrically distributed shielding blocks (101) shield the filter substrate (12) in an initial state, and the cleaning cotton (102) on the shielding blocks (101) and the surface of the filter substrate (12) are in contact with each other.

5. The filter self-switching infrared spectrometer according to claim 1, characterized in that: The outer wall of one end of the limiting rod (105) extending into the interior of the accommodating groove (104) is in contact with the inner wall of the accommodating groove (104), and the end of the limiting rod (105) extending into the interior of the accommodating groove (104) is circumferentially wrapped with a sealing ring, and the accommodating groove (104) is connected to the outside through the air outlet (106), and the air outlet end of the air outlet (106) is inclined toward the direction of the filter substrate (12).

6. The filter self-switching infrared spectrometer according to claim 1, characterized in that: The locking directions of the second one-way bearing (111) and the first one-way bearing (6) are opposite, and the linkage half gear (112) on the outside of the second one-way bearing (111) is meshingly connected with the connecting gear rack (113), and the connecting gear rack (113) can slide on the infrared spectrometer body (1).

7. The filter self-switching infrared spectrometer according to claim 1, characterized in that: The longitudinal section of the extrusion block (114) is configured as an isosceles trapezoidal structure, and the inclined surface of the extrusion block (114) is capable of squeezing the inclined surface of the end of the compressed blocking rod (103) after movement.

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