Spectrophotometer easy to maintain

Abstract

The utility model provides a spectrophotometer easy to maintain, and solves the problems that a hollow cathode lamp is usually in a plug type and is fixed through a threaded cover to prevent the hollow cathode lamp from loosening in the rotating process, and the replacement and maintenance process is relatively tedious, time-consuming and labor-consuming when a plurality of hollow cathode lamps are replaced and maintained in the mounting mode. The clamping and fixing mechanism is arranged on the lamp holder of the spectrophotometer main body to clamp and fix the hollow cathode lamps, so that the plurality of hollow cathode lamps can be prevented from loosening during rotation switching, and the rotating plate in the clamping and fixing mechanism can simultaneously separate the plurality of first clamping plates from the second clamping plates during rotation, so that the clamping and fixing effects of the hollow cathode lamps are improved. A worker can conveniently replace and maintain a plurality of hollow cathode lamps at the same time, and the maintenance process is simplified; and meanwhile, after the rotating plate is loosened, the rotating plate can automatically reset through the sliding block under the action of the spring to clamp the hollow cathode lamp, so that the maintenance efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of spectrophotometers, in particular to an easy-to-maintain spectrophotometer. Background Art

[0002] Spectrophotometer, also known as spectrometer, is a scientific instrument that decomposes light with complex components into spectral lines. The atomic absorption spectrophotometer uses a hollow cathode lamp as a light source and analyzes the characteristic spectral lines of specific elements.

[0003] Since hollow cathode lamps gradually age and their luminous intensity decreases during use, thus affecting the accuracy of the analysis results, the hollow cathode lamps of the spectrophotometer need to be regularly replaced and maintained. Existing hollow cathode lamps are often plug-in and fixed with threaded caps to prevent the hollow cathode lamps from loosening during rotation. However, this installation method is cumbersome, time-consuming and labor-intensive when replacing and maintaining multiple hollow cathode lamps. Utility Model Content

[0004] In order to solve the problem in the background technology that hollow cathode lamps are often plug-in and fixed by threaded covers to prevent the hollow cathode lamps from loosening during rotation, and this installation method makes the replacement and maintenance process cumbersome, time-consuming and labor-intensive when replacing and maintaining multiple hollow cathode lamps, the utility model proposes an easy-to-maintain spectrophotometer.

[0005] The technical solution of the utility model is: an easy-to-maintain spectrophotometer, comprising a spectrophotometer body, a light source chamber with a right opening structure is opened at the right end of the spectrophotometer body, a cabinet door is provided at the opening of the light source chamber, and the cabinet door is hinged on the spectrophotometer body;

[0006] A lamp holder is provided in the light source chamber, and the lamp holder includes a rotating shaft rotatably arranged in the light source chamber, a rotating drive device is fixedly provided at the bottom end of the rotating shaft, a rotating base is fixedly provided on the outer peripheral surface of the bottom end of the rotating shaft, and a plurality of socket holes are provided on the top of the rotating base, which are evenly distributed along the circumferential direction thereof, and a hollow cathode lamp extending upward is inserted into the socket hole;

[0007] The rotating base is provided with a clamping mechanism, which is used to clamp and fix the hollow cathode lamp. The clamping mechanism includes a rotating plate rotatably arranged on the top of the rotating base, the rotating plate rotatably sleeved on the rotating shaft, and a plurality of arc grooves evenly distributed in the extended circumferential direction are opened on the rotating plate. A first clamping plate extending upward is fixedly provided in the arc groove, and a plurality of second clamping plates are fixed on the rotating base. The second clamping plates are inserted into the plurality of arc grooves. The first clamping plate and the second clamping plate are arranged opposite to each other, and the socket hole is located between the first clamping plate and the second clamping plate. The rotating plate can drive the first clamping plate to move by rotating to clamp and fix the bottom of the hollow cathode lamp between the first clamping plate and the second clamping plate;

[0008] A spring mechanism is provided on the rotating base, and the spring mechanism is used for pushing the rotating plate to rotate.

[0009] Preferably, the rotating base is provided with a plurality of grooves spaced apart along its circumferential direction, the grooves extending along the circumferential direction of the rotating base, the spring mechanism includes a slider sliding in the groove, the slider is fixed at the bottom of the rotating plate, the slider is located at one end of the groove, and a spring is provided between the slider and the other end of the groove.

[0010] Preferably, a plurality of protrusions evenly distributed along the circumferential direction of the rotating plate are fixedly provided on the outer peripheral surface of the rotating plate.

[0011] Preferably, sponge strips are fixedly provided on opposite sides of the first clamping plate and the second clamping plate.

[0012] Preferably, a limiting ring is fixedly sleeved on the outer circumference of the hollow cathode lamp, and when the limiting ring abuts against the top of the first clamping plate and the second clamping plate, the bottom of the hollow cathode lamp fits with the rotating base.

[0013] Preferably, a fixing ring is provided on the fixed sleeve of the rotating shaft, and a plurality of U-shaped clips uniformly distributed along the circumferential direction thereof are fixedly provided on the fixing ring, and the hollow cathode lamp is clamped in the U-shaped clips.

[0014] The advantages of the utility model are as follows: the utility model provides a clamping mechanism on the lamp holder of the spectrophotometer body to clamp and fix the hollow cathode lamp, which can prevent multiple hollow cathode lamps from loosening during rotation and switching; the rotating plate in the clamping mechanism can simultaneously separate multiple first clamping plates from the second clamping plates during rotation, making it convenient for staff to replace and maintain multiple hollow cathode lamps at the same time, simplifying the maintenance process; at the same time, after loosening the rotating plate, the rotating plate can automatically reset itself under the action of the spring through the slider to clamp the hollow cathode lamp, thereby improving maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 For this utility model Figure 1 The structural diagram after removing the cabinet door;

[0018] Figure 3 For this utility model Figure 2 Schematic diagram of the structure inside the central light source room;

[0019] Figure 4 For this utility model Figure 3 Schematic diagram of the structure after removing the hollow cathode lamp;

[0020] Figure 5 It is a structural diagram of the spring mechanism of the utility model.

[0021] In the figure: 1. Spectrophotometer body; 2. Light source chamber; 201. Cabinet door; 3. Lamp holder; 301. Rotating shaft; 302. Rotating base; 4. Hollow cathode lamp; 5. Clamping mechanism; 501. Rotating plate; 502. Arc groove; 503. First clamping plate; 504. Second clamping plate; 6. Spring mechanism; 601. Groove; 602. Slider; 603. Spring; 7. Bump; 8. Sponge strip; 9. Limiting ring; 10. Fixing ring; 11. U-shaped clamp. DETAILED DESCRIPTION

[0022] 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 creative work are within the scope of protection of the present invention.

[0023] Example 1: An easy-to-maintain spectrophotometer, such as Figure 1-5 As shown, it includes a spectrophotometer body 1, a light source chamber 2 with a right opening structure is opened at the right end of the spectrophotometer body 1, a cabinet door 201 is provided at the opening of the light source chamber 2, and the cabinet door 201 is hinged to the spectrophotometer body 1; a lamp holder 3 is provided in the light source chamber 2, and the lamp holder 3 includes a rotating shaft 301 rotatably arranged in the light source chamber 2, and a rotation drive device is fixedly provided at the bottom end of the rotating shaft 301, and the rotation drive device is used to drive the rotating shaft 301 to rotate. For technicians in the relevant field, the rotation drive device is a well-known technology, so it will not be described in detail. A rotating base 302 is fixed on the outer peripheral surface of the bottom end of the rotating shaft 301, and a plurality of socket holes are provided on the top of the rotating base 302, which are evenly distributed along its circumferential direction, and a hollow cathode lamp 4 extending upward is inserted into the socket hole.

[0024] The rotating base 302 is provided with a clamping mechanism 5, which is used to clamp and fix the hollow cathode lamps 4 to prevent the multiple hollow cathode lamps 4 from loosening during rotation and switching. Specifically, the clamping mechanism 5 includes a rotating plate 501 rotatably arranged on the top of the rotating base 302, and the rotating plate 501 is rotatably sleeved on the rotating shaft 301. The rotating plate 501 is provided with a plurality of arc grooves 502 uniformly distributed in the circumferential direction. A first arc groove 502 extending upward is fixed in the arc groove 502. A clamping plate 503, a plurality of second clamping plates 504 are fixedly provided on the rotating base 302, the second clamping plates 504 are passed through a plurality of arc grooves 502, the first clamping plate 503 and the second clamping plate 504 are arranged opposite to each other, and the socket hole is located between the first clamping plate 503 and the second clamping plate 504, and the rotating plate 501 can drive the first clamping plate 503 to move by rotation so as to clamp and fix the bottom of the hollow cathode lamp 4 between the first clamping plate 503 and the second clamping plate 504.

[0025] A spring mechanism 6 is provided on the rotating base 302, and the spring mechanism 6 is used to generate a thrust on the rotating plate 501 to push the rotating plate 501 to rotate and clamp and fix the hollow cathode lamp 4. Specifically, the rotating base 302 is provided with a plurality of grooves 601 spaced apart along its circumferential direction, and the grooves 601 extend along the circumferential direction of the rotating base 302. The spring mechanism 6 includes a slider 602 slidingly arranged in the groove 601, and the slider 602 is fixed at the bottom of the rotating plate 501. The slider 602 is located at one end of the groove 601, and a spring 603 is provided between the slider 602 and the other end of the groove 601. The spring 603 can push the rotating plate 501 to rotate through the slider 602, so as to clamp and fix the hollow cathode lamp 4.

[0026] By rotating the rotating plate 501, multiple first clamping plates 503 can be separated from the second clamping plates 504 at the same time, which is convenient for staff to replace and maintain multiple hollow cathode lamps 4 at the same time, simplifying the maintenance process; after loosening the rotating plate 501, the rotating plate 501 can automatically reset through the slider 602 under the action of the spring 603 to clamp the hollow cathode lamp 4, thereby improving maintenance efficiency.

[0027] In order to facilitate the staff to rotate the rotating plate 501 to separate the first clamping plate 503 from the second clamping plate 504 so as to insert the hollow cathode lamp 4, a plurality of protrusions 7 uniformly distributed along the circumferential direction are fixedly provided on the outer peripheral surface of the rotating plate 501.

[0028] Sponge strips 8 are fixed on opposite sides of the first clamping plate 503 and the second clamping plate 504. The sponge strips 8 can prevent the first clamping plate 503 and the second clamping plate 504 from directly contacting the hollow cathode lamp 4, reducing damage to the object during clamping. At the same time, the surface energy of the sponge strips 8 increases the clamping force, further preventing the hollow cathode lamp 4 from sliding during the clamping process.

[0029] Since the socket hole is located between the first clamping plate 503 and the second clamping plate 504, it is not convenient to see the depth of the hollow cathode lamp 4 inserted into the socket hole during use. In order to determine the insertion depth of the hollow cathode lamp 4 to ensure that the hollow cathode lamp 4 can be powered on, and at the same time avoid excessive force during insertion, which may cause damage to the pins of the hollow cathode lamp 4, a limit ring 9 is fixed on the outer surface of the hollow cathode lamp 4, and when the limit ring 9 rests against the top of the first clamping plate 503 and the second clamping plate 504, the bottom of the hollow cathode lamp 4 fits against the rotating base 302.

[0030] A fixing ring 10 is fixed on the rotating shaft 301, and a plurality of U-shaped clips 11 are fixed on the fixing ring 10 and are evenly distributed along its circumferential direction. The U-shaped clips 11 are made of plastic and have certain elasticity and toughness. The hollow cathode lamp 4 is clamped in the U-shaped clips 11. The U-shaped clips 11 can support the hollow cathode lamp 4 to prevent the hollow cathode lamp 4 from tilting during rotation.

[0031] Working principle: When replacing the hollow cathode lamp 4, rotate the rotating plate 501 and separate the multiple first clamping plates 503 from the second clamping plates 504 at the same time, then pull out the hollow cathode lamp 4 to be replaced from the socket hole of the rotating base 302, and insert the new hollow cathode lamp 4 into the socket hole of the rotating base 302, then loosen the rotating plate 501, and the rotating plate 501 automatically resets through the slider 602 under the action of the spring 603 to clamp the hollow cathode lamp 4.

[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is determined by the appended claims rather than the foregoing description. It is intended that all variations within the meaning and range of equivalents of the claims be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. An easy-to-maintain spectrophotometer, characterized by: The spectrophotometer comprises a main body (1), a light source chamber (2) with a right opening structure is provided at the right end of the main body (1), a cabinet door (201) is provided at the opening of the light source chamber (2), and the cabinet door (201) is hinged to the main body (1); A lamp holder (3) is provided in the light source chamber (2), and the lamp holder (3) includes a rotating shaft (301) rotatably provided in the light source chamber (2), a rotating driving device is fixedly provided at the bottom end of the rotating shaft (301), a rotating base (302) is fixedly provided on the outer peripheral surface of the bottom end of the rotating shaft (301), and a plurality of socket holes uniformly distributed along the circumferential direction of the rotating base (302) are provided on the top of the rotating base (302), and a hollow cathode lamp (4) extending upward is inserted into the socket hole; A clamping mechanism (5) is provided on the rotating base (302), and the clamping mechanism (5) is used to clamp and fix the hollow cathode lamp (4). The clamping mechanism (5) includes a rotating plate (501) rotatably arranged on the top of the rotating base (302), the rotating plate (501) is rotatably sleeved on the rotating shaft (301), and the rotating plate (501) is provided with a plurality of arc grooves (502) uniformly distributed in the extended circumferential direction, and a first clamping plate (503) extending upward is fixed in the arc groove (502). The rotating base ( 302), a plurality of second clamping plates (504) are fixedly provided on the first clamping plate (503), the second clamping plates (504) are inserted into the plurality of arc-shaped grooves (502), the first clamping plate (503) and the second clamping plate (504) are arranged opposite to each other, the socket hole is located between the first clamping plate (503) and the second clamping plate (504), and the rotating plate (501) can drive the first clamping plate (503) to move by rotating, so as to clamp and fix the bottom of the hollow cathode lamp (4) between the first clamping plate (503) and the second clamping plate (504); A spring mechanism (6) is provided on the rotating base (302), and the spring mechanism (6) is used to push the rotating plate (501) to rotate.

2. The easy-to-maintain spectrophotometer according to claim 1, characterized in that: The rotating base (302) is provided with a plurality of grooves (601) spaced apart along its circumferential direction. The grooves (601) extend along the circumferential direction of the rotating base (302). The spring mechanism (6) includes a slider (602) slidably arranged in the groove (601). The slider (602) is fixed to the bottom of the rotating plate (501). The slider (602) is located at one end of the groove (601). A spring (603) is provided between the slider (602) and the other end of the groove (601).

3. The easy-to-maintain spectrophotometer according to claim 1, characterized in that: A plurality of protrusions (7) evenly distributed along the circumferential direction of the rotating plate (501) are fixedly provided on the outer peripheral surface of the rotating plate (501).

4. The easy-to-maintain spectrophotometer according to claim 1, characterized in that: Sponge strips (8) are fixedly provided on opposite sides of the first clamping plate (503) and the second clamping plate (504).

5. The easy-to-maintain spectrophotometer according to claim 1, characterized in that: A limiting ring (9) is fixedly sleeved on the outer peripheral surface of the hollow cathode lamp (4), and when the limiting ring (9) abuts against the tops of the first clamping plate (503) and the second clamping plate (504), the bottom of the hollow cathode lamp (4) fits into the rotating base (302).

6. The easy-to-maintain spectrophotometer according to claim 1, characterized in that: A fixed ring (10) is provided on the fixed sleeve of the rotating shaft (301), and a plurality of U-shaped clamps (11) are fixedly provided on the fixed ring (10) and are evenly distributed along its circumferential direction, and the hollow cathode lamp (4) is clamped in the U-shaped clamps (11).

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