Sample transmission device

Abstract

The utility model provides a sample transmission device which comprises a fixing frame and an upper cover assembly, the upper cover assembly is pivoted with the top of the fixing frame through a rotating shaft, and the upper cover assembly comprises a sample cup and a sample cup support for placing the sample cup. A sample injection hole is formed in the top surface of the sample cup, a sample placing position and a testing position are defined on the sample cup support, and when the sample cup support is located at the testing position, the sample cup is in a side-arranged state. The upper cover assembly further comprises a sample cup cover used for pressing the sample cup. The top of the sample cup is provided with a cut edge, the sample injection hole is close to the cut edge, the sample cup cover is provided with an ejector rod, if the sample cup is placed in the mode that the cut edge of the sample cup right faces the rotating shaft, the sample cup and the ejector rod are staggered, and if the sample cup is placed in other modes, the sample cup and the ejector rod interfere with each other to prevent the sample cup cover from continuously rotating. According to the sample transmission device, when the placement position of the sample cup is wrong, the upper cover assembly cannot rotate in place, an operator can be reminded to adjust in time, and liquid samples are prevented from leaking out to pollute an instrument.

Description

Technical Field

[0001] The present application relates to a sample transmission device for a side-illuminated X-ray fluorescence spectrometer. Background Art

[0002] The sample transmission device for X-ray fluorescence spectrometer generally includes a fixed plate and an upper cover assembly pivotally connected to the fixed plate, the upper cover assembly includes a sample cup and a sample cup bracket for fixing the sample cup. During detection, the upper cover assembly is rotated to drive the sample cup bracket to rotate to the detection position so that the sample cup is aligned with the detection window 11, and the X-ray fluorescence spectrometer is started to detect the sample in the sample cup. The sample loading hole of the sample cup is generally located on the top side of the sample. For the side-illuminated X-ray fluorescence spectrometer, when the sample cup bracket is rotated to the detection position, the sample cup is in a side-placed state. Therefore, in order to ensure that the liquid sample in the side-placed sample cup does not flow out when detecting the liquid sample, the sample loading hole of the sample cup is eccentrically set, and when placing it, it is necessary to ensure that the sample loading hole is located at its highest position when the sample cup is in the detection position. In the existing sample transmission device, the sample cup cannot be accurately positioned when placed, and even if the position of the loading hole deviates, it is not easy to find, resulting in the risk of the liquid sample in the side-placed sample cup flowing out of the loading hole and contaminating the instrument.

[0003] Therefore, it is necessary to improve the existing sample transmission device. Utility Model Content

[0004] The present application provides a sample transmission device, which can prevent the leakage of liquid samples and contamination of instruments caused by incorrect placement of the sample cup.

[0005] Specifically, the present application is implemented through the following technical solutions: a sample transmission device, comprising a fixed frame and an upper cover assembly, the upper cover assembly is pivotally connected to the top of the fixed frame through a rotating shaft, the upper cover assembly comprises a sample cup and a sample cup bracket for placing the sample cup, the top surface of the sample cup is provided with a sample injection hole, the sample cup bracket is defined with a sample placement position and a test position, when the sample cup bracket is located at the test position, the sample cup is in a side-placed state, the upper cover assembly also includes a sample cup cover for pressing the sample cup; the top of the sample cup is provided with a cutting edge, the sample injection hole is close to the cutting edge, and the sample cup cover is provided with a push rod, if the sample cup is placed in a manner such that its cutting edge is facing the rotating shaft, the sample cup and the push rod are staggered, if the sample cup is placed in other ways, the sample cup and the push rod interfere with each other to prevent the sample cup cover from continuing to rotate.

[0006] Furthermore, the upper cover assembly also includes a sample cover, which is fixedly connected to the sample cup bracket, an acute angle is formed between the sample cover and the sample cup, and the sample cup cover is located between the sample cover and the sample cup.

[0007] Furthermore, the sample cup is in the shape of a second-order cylinder that is larger at the top and smaller at the bottom.

[0008] Furthermore, a connecting shaft is provided at the end of the sample cup cover, and the connecting shaft is pivotally connected to the sample cup bracket; the fixing frame is provided with a slide groove, and a pulley located in the slide groove is also provided at the end of the sample cup cover, and the pulley slides along the slide groove and drives the sample cup cover to rotate.

[0009] Furthermore, the slide groove includes a front arc groove, wherein the center of the front arc groove is at a different position from the axis of the rotating shaft, and the pulley moves along the front arc groove and drives the sample cup cover to rotate relative to the sample cup bracket.

[0010] Furthermore, the slide groove includes a rear arc groove, the center of which is at the same position as the axis of the rotating shaft, and the pulley drives the sample cup cover and the sample cup bracket to rotate synchronously along the rear arc groove.

[0011] Furthermore, a pair of matching walls are provided at the top of the fixing frame, and the sliding groove is provided on the matching walls.

[0012] In the sample transmission device of the present application, the sample cup cover is provided with a push rod. When the sample cup is placed in the wrong position, the push rod and the sample cup will interfere with each other and prevent the upper cover assembly from continuing to be in place, which can remind the operator to make timely adjustments to avoid liquid samples from leaking and contaminating the instrument.

[0013] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional combination diagram of a sample transmission device according to one embodiment of the present application;

[0015] Figure 2 for Figure 1 A three-dimensional view of a sample cup of a sample transmission device in FIG.

[0016] Figure 3 for Figure 1 A side view of a sample transmission device in partial section, wherein the sample cup support thereof is in a sample placement position;

[0017] Figure 4 and Figure 3 Similarly, the sample cup holder is in the process of rotating;

[0018] Figure 5 and Figure 4 similar, wherein the sample cup holder is in the detection position;

[0019] Figure 6 This is a schematic diagram of the state when the sample cup cover of the sample transmission device interferes with the sample cup.

[0020] Description of reference numerals:

[0021] Sample transmission device 100, fixed frame 1, detection window 11, support arm 12, matching wall 13, slide groove 14, front arc groove 141, rear arc groove 142, upper cover assembly 2, rotating shaft 3, sample cup 21, cutting edge 211, sample injection hole 212, sample cup bracket 22, through hole 221, sample cover 23, sample cup cover 24, connecting shaft 241, pulley 242, and push rod 243. DETAILED DESCRIPTION

[0022] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are only examples of devices, systems, equipment and methods consistent with some aspects of the present application.

[0023] refer to Figure 1 As shown, a sample transmission device 100 is used for an X-ray fluorescence spectrometer, which includes a fixed frame 1 and an upper cover assembly 2. The fixed frame 1 is tilted, and the upper cover assembly 2 is pivotally connected to the top of the fixed frame 1 through a rotating shaft 3. The upper cover assembly 2 includes a sample cup 21, a sample cup bracket 22 for placing the sample cup 21, and a sample cover 23 fixedly connected to the sample cup bracket 22. The sample cup bracket 22 is defined with a sample placement position and a detection position. When the sample cup bracket 22 is in the sample placement position, it is horizontally arranged to place the sample cup 21; the fixed frame 1 is provided with a detection window 11. When the sample cup bracket 22 rotates to the detection position, the sample cup 21 is aligned with the detection window 11 of the sample cup bracket 22 for detection. One end of the sample cover 23 is fixedly connected to the sample cup bracket 22 by a screw, and the sample cover 23 and the sample cup bracket 22 are arranged at an acute angle. The sample cover 23 can be operated to drive the sample cup bracket 22 to rotate.

[0024] The sample cup 21 is generally in the shape of a two-stage cylinder with a larger top and a smaller bottom, wherein a cut edge 211 is provided on one side of the top side, and the injection hole 212 is located on the top surface of the sample cup 21 and close to the cut edge 211. When the sample cup 21 is placed, the cut edge 211 is placed directly opposite the rotation axis 3, that is, the cut edge 211 is placed toward the rotation axis 3 and parallel to the extension direction of the rotation axis 3, so that when the sample cup 21 is rotated to the side, the cut edge 211 is located at the topmost side, and the injection hole 212 is at its highest position, which is farthest from the liquid surface of the liquid sample in the sample cup 21, so that the liquid sample can be prevented from leaking out of the injection hole 212.

[0025] The upper cover assembly 2 also includes a sample cup cover 24, which is located between the sample cover 23 and the sample cup support 22. The sample cup cover 24 is connected and matched with the sample cup support 22 and the fixing frame 1. In addition to rotating with the upper cover assembly 2, it can also rotate relative to the sample cup support 22 to press the sample cup 21 placed on the sample cup support 22. Figures 3 to 5 , and combined with Figure 1 Provide a detailed description.

[0026] A pair of supporting arms 12 are provided at the top of the fixed frame 1. The supporting arms 12 are provided with pivot holes (not numbered). The rotating shaft 3 passes through the pivot holes (not numbered) to pivotally connect the upper cover assembly 2 to the fixed frame 1. A pair of matching walls 13 are also provided at the top of the fixed frame 1. The matching walls 13 are respectively located on the outside of the corresponding supporting arms 12. The matching walls 13 are provided with a curved slide groove 14. A connecting shaft 241 and a pulley 242 are provided at the end of the sample cup cover 24. The pulley 242 is closer to the free end of the end than the connecting shaft 241. The positions of the connecting shaft 241 and the pulley 242 are fixed. The sample cup bracket 22 is provided with a through hole 221. The connecting shaft 241 is inserted into the through hole 221 to pivotally connect the sample cup cover 24 to the sample cup bracket 22. The pulley 242 is located in the slide groove 14 of the fixed frame 1 and can slide along the slide groove 14.

[0027] like Figure 3 As shown, the sample cup holder 22 is located at the placement position, and the sample cup 21 is placed on the sample cup holder 22 with its cut edge 211 facing the rotating shaft 3. The slide groove 14 includes a front arc groove 141 and a rear arc groove 142 which are continuous front and rear. The center of the front arc groove 141 is at a different position from the axis of the rotating shaft 3, and the center of the rear arc groove 142 is at the same position as the axis of the rotating shaft 3. After the sample cup 21 is placed, the sample cover 23 is rotated downward to drive the upper cover assembly 2 to rotate as a whole, and the connecting shaft 241 connected to the sample cup holder 22 moves downward accordingly, and the pulley 242 of the sample cup cover 24 is pushed to slide in the front arc groove 141. Under the guidance of the front arc groove 141, during the rotation of the upper cover assembly 2, the sample cup cover 24 rotates relative to the sample cup holder 22 until it is pressed against the sample cup 21, as shown in FIG. Figure 4 As shown. The upper cover assembly 2 continues to rotate, and the pulley 242 of the sample cup cover 24 enters the rear arc groove 142. Since the rear arc groove 142 and the center of the rotating shaft 3 are at the same position, the rotation trajectory of the sample cup cover 24 is consistent with the rotation trajectory of the sample cup bracket 22, and the two no longer move relative to each other. Finally, the upper cover assembly 2 rotates to Figure 5 The sample cup support 22 is now against the fixed frame 1 , the pulley 242 is located at the rear end of the rear arc groove 142 , and the sample cup 21 is aligned with the detection window 11 .

[0028] The above description is for the case where the sample cup 21 is correctly placed. Figure 6As shown, if the sample cup 21 is placed incorrectly, it will be stuck in this position and the upper cover assembly 2 cannot continue to rotate. Figure 1 As shown, the sample cup cover 24 is provided with a push rod 243 arranged at a position corresponding to the cutting edge 211. If the sample cup 21 is placed correctly, the push rod 243 and the cutting edge 211 of the sample cup 21 will not interfere with each other. However, if the placement position of the sample cup 21 is incorrect, the push rod 243 will interfere with the sample cup 21, causing the sample cup cover 24 to be unable to continue to rotate relative to the sample cup bracket 22. At this time, the pulley 242 is still located in the front arc groove 141. Since the front arc groove 141 and the rotating shaft 3 are not concentrically arranged, the inner wall of the slide groove 14 will prevent the pulley 242 from sliding, so the connecting shaft 241 cannot move, that is, the upper cover assembly 2 cannot continue to rotate, which can remind the operator that the placement of the sample cup 21 is deviated and needs to be adjusted in time.

[0029] The upper cover assembly 2 of the sample transmission device 100 of the present application cannot be rotated into place when the sample cup 21 is incorrectly placed, which can remind the operator to adjust the position of the sample cup 21 in time to prevent the liquid sample from leaking and contaminating the instrument.

[0030] The above is only a preferred implementation mode of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A sample transmission device, comprising a fixing frame and an upper cover assembly, wherein the upper cover assembly is pivotally connected to the top of the fixing frame through a rotating shaft, the upper cover assembly comprises a sample cup and a sample cup support for placing the sample cup, the top surface of the sample cup is provided with a sample injection hole, the sample cup support is defined with a sample placement position and a test position, and when the sample cup support is located at the test position, the sample cup is in a side position, characterized in that: The upper cover assembly also includes a sample cup cover for pressing the sample cup; a cutting edge is provided on the top of the sample cup, the sample injection hole is close to the cutting edge, and the sample cup cover is provided with a push rod. If the sample cup is placed with its cutting edge facing the rotating shaft, the sample cup and the push rod are staggered. If the sample cup is placed in other ways, the sample cup and the push rod interfere with each other to prevent the sample cup cover from continuing to rotate.

2. The sample transmission device according to claim 1, characterized in that: The upper cover assembly also includes a sample cover, which is fixedly connected to the sample cup bracket. An acute angle is formed between the sample cover and the sample cup, and the sample cup cover is located between the sample cover and the sample cup.

3. The sample transmission device according to claim 2, characterized in that: The sample cup is in the shape of a second-order cylinder that is larger at the top and smaller at the bottom.

4. The sample transmission device according to claim 1, characterized in that: A connecting shaft is provided at the end of the sample cup cover, and the connecting shaft is pivotally connected to the sample cup bracket; the fixing frame is provided with a slide groove, and a pulley located in the slide groove is also provided at the end of the sample cup cover, and the pulley slides along the slide groove and drives the sample cup cover to rotate.

5. The sample transmission device according to claim 4, characterized in that: The slide groove comprises a front arc groove, wherein the center of the front arc groove is at a different position from the axis of the rotating shaft, and the pulley moves along the front arc groove and drives the sample cup cover to rotate relative to the sample cup bracket.

6. The sample transmission device according to claim 5, characterized in that: The slide groove comprises a rear arc groove, the center of which is at the same position as the axis of the rotating shaft, and the pulley drives the sample cup cover and the sample cup bracket to rotate synchronously along the rear arc groove.

7. The sample transmission device according to claim 4, characterized in that: A pair of matching walls are also provided at the top of the fixing frame, and the sliding groove is provided on the matching walls.

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