Sample holder of atomic fluorescence spectrophotometer

Abstract

The utility model discloses an atomic fluorescence spectrophotometer sample holder which comprises a box body, a plurality of first mounting plates are arranged on the box body at intervals along the front-back direction, and a plurality of first elastic sheets are arranged on each first mounting plate at intervals along the length direction of the first mounting plate; a plurality of second mounting plates are movably arranged on the box body in the left-right direction, the second mounting plates and the first mounting plates are arranged in parallel in a one-to-one correspondence mode, a plurality of second elastic pieces are arranged on the second mounting plates at intervals in the length direction of the second mounting plates, and each second elastic piece and the corresponding first elastic piece form a clamping cavity for containing a sample tube; the multiple second mounting plates are connected through connecting rods, a limiting mechanism is arranged between one second mounting plate and the box body, and the limiting mechanism is used for locking the position of the second mounting plate after movement. According to the atomic fluorescence spectrophotometer sample holder with the structure, test tubes of different models can be fixed, and the application range of the sample holder can be widened.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of atomic fluorescence photometer, especially relates to a sample holder of atomic fluorescence photometer. BACKGROUND

[0002] Atomic fluorescence photometer is with potassium borohydride or sodium borohydride as reducing agent, the element to be analyzed in sample solution is reduced to volatile covalent gaseous hydride (or atomic steam), then with the help of carrier gas, it is introduced into atomizer, and is atomized in argon-hydrogen flame to form ground state atom. At present, sampling device is arranged on the atomic fluorescence photometer, and sample holder is arranged below the sampling device, and the sample holder carries test tube of sample solution, and when testing, the probe of sampling device is inserted into test tube to extract sample solution. Among them, the existing sample holder is the structure of multiple groups of same aperture jack, and the test tube is directly inserted in the jack, and the complete test tube is completed. However, since in the actual test process, different models of test tubes need to be used to store sample solution, the existing sample holder is difficult to meet the fixation of different models of test tubes. SUMMARY

[0003] In view of the above defects, the utility model provides a sample holder of atomic fluorescence photometer, which can fix different models of test tubes, and is beneficial to improve the use range of the sample holder.

[0004] To achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A sample holder of atomic fluorescence photometer, comprising: a box body, a plurality of first installation plates are arranged at intervals along the front-rear direction of the box body, a plurality of first elastic sheets are arranged at intervals along the length direction of each first installation plate, a plurality of second installation plates are movably arranged along the left-right direction of the box body, the second installation plates are arranged in parallel one by one corresponding to the first installation plates, a plurality of second elastic sheets are arranged at intervals along the length direction of each second installation plate, each second elastic sheet and the corresponding first elastic sheet form a clamping cavity accommodating a sample tube, a plurality of second installation plates are connected through connecting rods, a limiting mechanism is arranged between one second installation plate and the box body, and the limiting mechanism is used to lock the position of the second installation plate after moving.

[0006] The atomic fluorescence spectrometer sample holder according to the embodiments of this utility model has at least the following beneficial effects: During use, the limiting mechanism is unlocked according to the size of the sample tube to be placed, allowing multiple second mounting plates to move synchronously in the left-right direction. This enables multiple second elastic plates to move closer to or further away from the corresponding first elastic plate, thereby changing the size of the clamping cavity defined by the first and second elastic plates. This not only facilitates the subsequent clamping and fixing of the corresponding sample tube by the first and second elastic plates, increasing the applicability of the device, but also allows for simultaneous adjustment of the size of multiple clamping cavities, reducing the workload of manual adjustment. Furthermore, the multiple clamping cavities are distributed in multiple rows and columns, which is beneficial for the housing to hold multiple sample tubes.

[0007] Furthermore, the limiting mechanism includes bolt rods on both sides of the second mounting plate, and the two opposite side walls of the housing are provided with through holes through which the corresponding bolt rods can pass. The bolt rods are connected to locking nuts, and the locking nuts are bolted to the bolt rods. The locking nuts abut against the side walls of the housing.

[0008] Furthermore, the first mounting plate is provided with a plurality of waist-shaped holes at intervals along its length direction, the waist-shaped holes extending in the left-right direction, and each of the second elastic pieces is connected to the second mounting plate with a mounting rod, each of the mounting rods slidingly engaging with the waist-shaped hole.

[0009] Furthermore, the first elastic sheet and the second elastic sheet have concave arc surfaces with the same radius, and the clamping cavity is defined between the two concave arc surfaces, thereby better adapting to the clamping and fixing of sample tubes of different models.

[0010] Furthermore, the housing is provided with multiple base plates spaced apart along the front-to-back direction. The base plates are located below the first elastic sheet and are used to support the sample tubes upward. Each base plate is connected to a lifting mechanism that drives it to move vertically.

[0011] Furthermore, the lifting mechanism includes a screw rotatably mounted on the housing, a first slider threadedly fitted to the screw, the first slider being connected to the base plate, a rotating handle connected to the upper end of the screw, the rotating handle being located outside the housing, and a guide mechanism being provided between the first slider and the housing, the guide mechanism being used to restrict the rotation of the first slider.

[0012] Furthermore, the guiding mechanism includes a guide rod, which is arranged parallel to the screw, and a second slider is slidably engaged with the guide rod. The base plate is connected between the first slider and the second slider.

[0013] Furthermore, both the first slider and the second slider are provided with slots, the slot openings of which are horizontally positioned, and the two opposite sidewalls of the base plate are respectively inserted into the corresponding slots.

[0014] Furthermore, the box body has two parallel flat plates, the screw is rotatably mounted on one of the flat plates, and the guide rod is fixedly mounted on the other flat plate, with a placement area for accommodating multiple sample tubes defined between the two flat plates.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a schematic diagram of the structure of one embodiment of an atomic fluorescence spectrometer sample holder according to the present invention;

[0018] Figure 2 for Figure 1 Another structural diagram from a different perspective;

[0019] Figure 3 for Figure 1 A cross-sectional view of the horizontal section.

[0020] In the diagram: housing 100, flat plate 101, first mounting plate 110, first elastic sheet 111, oblong hole 112, second mounting plate 120, second elastic sheet 121, connecting rod 122, bolt rod 123, locking nut 124, mounting rod 125, base plate 130, screw 131, first slider 132, rotating handle 133, guide rod 134, second slider 135. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0022] In the description of this utility model, it should be noted that the terms "inner", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] See Figures 1 to 3 An atomic fluorescence spectrometer sample holder includes: a housing 100, with a plurality of first mounting plates 110 spaced apart along the front-to-back direction, each first mounting plate 110 having a plurality of first elastic sheets 111 spaced apart along its length, and a plurality of second mounting plates 120 movably disposed in the housing 100 along the left-to-right direction, the second mounting plates 120 being parallel to the first mounting plates 110 in a one-to-one correspondence, and the second mounting plates 120 having a plurality of second elastic sheets 121 spaced apart along their length, each second elastic sheet 121 forming a clamping cavity for accommodating a sample tube with the corresponding first elastic sheet 111, the plurality of second mounting plates 120 being connected by connecting rods 122, and a limiting mechanism being provided between one of the second mounting plates 120 and the housing 100, the limiting mechanism being used to lock the position of the second mounting plate 120 after movement.

[0026] In use, the atomic fluorescence spectrometer sample holder with the above structure allows the limiting mechanism to be unlocked according to the size of the sample tube to be placed. This enables multiple second mounting plates 120 to move synchronously in the left-right direction, thereby moving multiple second elastic plates 121 closer to or further away from the corresponding first elastic plate 111. This changes the size of the clamping cavity defined by the first elastic plate 111 and the second elastic plate 121. This not only facilitates the subsequent clamping and fixing of the corresponding sample tube by the first elastic plate 111 and the second elastic plate 121, increasing the applicability of the device, but also allows for simultaneous adjustment of the size of multiple clamping cavities, reducing the workload of manual adjustment. The multiple clamping cavities are distributed in multiple rows and columns, which allows the housing 100 to hold multiple sample tubes.

[0027] See Figures 1 to 3 Furthermore, the limiting mechanism includes bolt rods 123 located on both sides of the second mounting plate 120. Two opposite side walls of the housing 100 have through holes through which the corresponding bolt rods 123 can pass. Each bolt rod 123 is connected to a locking nut 124, which is bolted to the bolt rod 123 and abuts against the side wall of the housing 100. Specifically, when the position of the second mounting plate 120 needs to be adjusted, one of the locking nuts 124 is loosened, allowing the second mounting plate 120 to have a displacement. Then, the second mounting plate 120 is moved so that the clamping cavity can be adapted to the installation of the sample tube. Finally, the corresponding locking nut 124 is tightened again. Thus, the two locking nuts 124 limit the position of the second mounting plate 120 after movement, making overall adjustment convenient and quick, simplifying the adjustment process. It is understood that the limiting mechanism can also be replaced by a pin and pin hole connection. The second mounting plate 120 has extension plates extending out of the housing 100 on both sides. The extension plates have multiple pin holes along their length, so that the pins are inserted into the corresponding pin holes to restrict the movement of the second mounting plate 120.

[0028] See Figures 1 to 3 Furthermore, the first mounting plate 110 is provided with a plurality of oblong holes 112 spaced along its length. The oblong holes 112 extend in the left-right direction. Each second elastic piece 121 is connected to the second mounting plate 120 by a mounting rod 125, and each mounting rod 125 is slidably engaged with the oblong hole 112. Specifically, the engagement of the mounting rod 125 with the oblong hole 112 facilitates the mounting of the second mounting plate 120 on the first mounting plate 110 and also facilitates the guiding and limiting of the movement of the second mounting plate 120, allowing the second mounting plate 120 to perform a translational movement relative to the first mounting plate 110. It can be understood that the second mounting plate 120 is provided with a plurality of threaded holes. One end of the mounting rod 125 is connected to the second elastic piece 121, and the other end of the mounting rod 125 passes through the oblong hole 112 and is connected to the threaded hole, thereby facilitating the mounting of the second elastic piece 121 on the second mounting plate 120.

[0029] See Figures 1 to 2 Furthermore, the first elastic sheet 111 and the second elastic sheet 121 have concave arc surfaces with the same radius, and a clamping cavity is defined between the two concave arc surfaces, so as to better adapt to the clamping and fixing of sample tubes of different models.

[0030] See Figures 1 to 3 Furthermore, the housing 100 is provided with multiple base plates 130 spaced apart along the front-to-back direction. The base plates 130 are located below the first elastic sheet 111 and are used to support the sample tubes upwards. Each base plate 130 is connected to a lifting mechanism that drives it to move vertically. It is understood that, since sample tubes of different models have different lengths, adjusting the height of the base plates 130 using the lifting mechanism facilitates adjusting the installation height of the sample tubes upwards or downwards, which helps to shorten the displacement of subsequent probes into the sample tubes, thereby reducing the sampling time. In addition, in some embodiments, after sampling of a single row of sample tubes, the height of each base plate 130 can be changed through the corresponding lifting mechanism, resulting in a staggered height arrangement of sample tubes after sampling of multiple rows, which facilitates identification and avoids misoperation.

[0031] See Figures 1 to 3 Furthermore, the lifting mechanism includes a screw 131 rotatably mounted on the housing 100, with a first slider 132 threadedly engaged with the screw 131. The first slider 132 is connected to the base plate 130. A rotating handle 133 is connected to the upper end of the screw 131, and the rotating handle 133 is located outside the housing 100. A guide mechanism is provided between the first slider 132 and the housing 100 to restrict the rotation of the first slider 132. Specifically, in use, the user drives the rotating handle 133 to rotate, causing the first slider 132 to move along the length of the screw 131 under the action of the screw thread, thereby causing the base plate 130 to move vertically, which is beneficial for changing the height position of the base plate 130.

[0032] See Figures 1 to 3 Furthermore, the guiding mechanism includes a guide rod 134, which is parallel to the screw 131. A second slider 135 is slidably engaged with the guide rod 134, and the base plate 130 is connected between the first slider 132 and the second slider 135. Specifically, the cooperation between the guide rod 134 and the second slider 135 facilitates guiding and limiting the lifting and lowering of the base plate 130, thereby enabling the base plate 130 to perform translational movement relative to the housing 100. In some embodiments, the guide rod 134 can also be replaced by a slide rail, which is parallel to the screw 131, and the second slider 135 is slidably engaged with the slide rail, similarly guiding and limiting the movement of the base plate 130.

[0033] See Figure 3Furthermore, both the first slider 132 and the second slider 135 are provided with slots, the slot openings of which are horizontally positioned. The two opposite sidewalls of the base plate 130 are respectively inserted into the corresponding slots, thereby facilitating the plug-in installation of the base plate 130 relative to the first slider 132 and the second slider 135, and also facilitating subsequent disassembly and replacement of the base plate 130. It is understood that the base plate 130 and the first slider 132, and the base plate 130 and the second slider 135, can be further locked together by bolt assemblies, which will not be detailed here.

[0034] See Figures 1 to 3 Furthermore, the housing 100 has two parallel flat plates 101, a screw 131 rotatably mounted on one of the flat plates 101, and a guide rod 134 fixedly mounted on the other flat plate 101. The two flat plates 101 define a placement area for accommodating multiple sample tubes, thus facilitating the placement of multiple sample tubes from outside the housing 100 into the placement area.

[0035] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0036] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A sample holder for an atomic fluorescence spectrometer, characterized in that, include: A housing (100) is provided with a plurality of first mounting plates (110) spaced apart along the front-to-back direction. Each first mounting plate (110) is provided with a plurality of first elastic pieces (111) spaced apart along its length direction. The housing (100) is provided with a plurality of second mounting plates (120) movably along the left-to-right direction. The second mounting plates (120) are arranged parallel to the first mounting plates (110) in a one-to-one correspondence. The second mounting plates (120) are provided with a plurality of second elastic pieces (121) spaced apart along their length direction. Each second elastic piece (121) and the corresponding first elastic piece (111) form a clamping cavity for accommodating the sample tube. The plurality of second mounting plates (120) are connected by a connecting rod (122). A limiting mechanism is provided between one of the second mounting plates (120) and the housing (100). The limiting mechanism is used to lock the position of the second mounting plate (120) after it has moved.

2. The sample holder for an atomic fluorescence spectrometer according to claim 1, characterized in that, The limiting mechanism includes bolt rods (123) on both sides of the second mounting plate (120). The two opposite side walls of the housing (100) are provided with through holes through which the corresponding bolt rods (123) can pass. The bolt rods (123) are connected to locking nuts (124). The locking nuts (124) are bolted to the bolt rods (123) and abut against the side walls of the housing (100).

3. The sample holder for an atomic fluorescence spectrometer according to claim 2, characterized in that, The first mounting plate (110) is provided with a plurality of waist-shaped holes (112) spaced apart along its length direction. The waist-shaped holes (112) extend in the left and right direction. Each of the second elastic pieces (121) is connected to the second mounting plate (120) by a mounting rod (125), and each mounting rod (125) slides in cooperation with the waist-shaped hole (112).

4. The sample holder for an atomic fluorescence spectrometer according to claim 1, characterized in that, The first elastic sheet (111) and the second elastic sheet (121) have concave arc surfaces with the same radius, and the clamping cavity is defined between the two concave arc surfaces.

5. The sample holder for an atomic fluorescence spectrometer according to claim 1, characterized in that, The box body is provided with multiple base plates (130) spaced apart along the front-to-back direction. The base plates (130) are located below the first elastic sheet (111). The base plates (130) are used to support the sample tubes upward. Each base plate (130) is connected to a lifting mechanism that drives it to move in the vertical direction.

6. A sample holder for an atomic fluorescence spectrometer according to claim 5, characterized in that, The lifting mechanism includes a screw (131) rotatably mounted on the housing (100), the screw (131) being threadedly fitted with a first slider (132), the first slider (132) being connected to the base plate (130), the upper end of the screw (131) being connected to a rotating handle (133), the rotating handle (133) being located outside the housing (100), and a guide mechanism being provided between the first slider (132) and the housing (100), the guide mechanism being used to restrict the rotation of the first slider (132).

7. The sample holder for an atomic fluorescence spectrometer according to claim 6, characterized in that, The guiding mechanism includes a guide rod (134), which is arranged parallel to the screw (131). The guide rod (134) is slidably engaged with a second slider (135). The base plate (130) is connected between the first slider (132) and the second slider (135).

8. The sample holder for an atomic fluorescence spectrometer according to claim 7, characterized in that, Both the first slider (132) and the second slider (135) are provided with slots, the slot openings are horizontally set, and the two opposite sidewalls of the base plate (130) are respectively inserted into the corresponding slots.

9. A sample holder for an atomic fluorescence spectrometer according to claim 7, characterized in that, The housing (100) has two parallel plates (101), the screw (131) is rotatably mounted on one of the plates (101), and the guide rod (134) is fixedly mounted on the other plate (101). The two plates (101) define a placement area for accommodating multiple sample tubes.

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