A sample boat assembly and sample introduction system

Abstract

The utility model discloses a kind of sample boat assembly and sample introduction system, sample boat assembly, including bearing boat and sample boat;The bearing boat is used to support sample boat upward, including the concave cavity of opening upward, the concave cavity is big on top and small on bottom;The sample boat is used to load sample, and when the sample boat is contained in concave cavity, the side edge surface of the sample boat and the clearance fit between concave cavity side wall surface.When the sample boat is contained in concave cavity, the side edge surface of the sample boat and the clearance fit between concave cavity side wall surface.Sample introduction system, including push rod and the sample boat assembly as described above, the bearing boat left and right swing with the first end of push rod connection.The utility model structure is reasonable, is favorable to improve the position accuracy of sample boat blanking, is favorable to fully combustion and improve detection result precision.

Description

Technical Field

[0001] This utility model relates to the technical field of equipment for ion chromatography detection, specifically a sample boat assembly and a sample introduction system. Background Technology

[0002] The analysis of elemental content in samples is involved in many fields such as mineral resources, metallurgical engineering, environmental science, and food safety. Ion chromatography is the most commonly used instrument for elemental content analysis. In the process of determining the elemental content of samples using ion chromatography, high-temperature pyrolysis pretreatment of samples has become a highly regarded pretreatment method for elemental analysis in recent years. This method combines the characteristics of high-temperature pyrolysis and water distillation. High-temperature pyrolysis mainly utilizes the volatility of some elements (such as halogens), releasing them from their salts or other compounds in the form of vapor at high temperatures (such as 1100℃). The vapor is then absorbed in a suitable absorbent, thereby achieving the separation and enrichment of the analyte. In existing technologies, to accurately and rapidly determine the elemental content in samples, high-temperature pyrolysis pretreatment of samples is generally performed in the high-temperature combustion tube of the detection equipment. While heating, ultrapure water and oxygen are introduced into the combustion tube to carry out the sample pyrolysis reaction, as described in patent application number 2022102833512 entitled "A Novel Combustion Online Ion Chromatography System and Its Usage Method".

[0003] In the prior art, the sample is placed in a sample boat and fed into the high-temperature zone of the combustion tube by a pusher for sample pyrolysis reaction. The front end of the pusher is annular, and the sample boat is in line contact with the annular structure. When the sample boat is dropped, there may be a deviation in the position of the sample boat and the annular structure or their relative position, or the sample boat may be tilted due to the influence of airflow during the dropping process, or even the sample may spill out, affecting the detection accuracy. In addition, the sample boat is small in size, and even a small positional deviation can easily cause the sample boat to tilt after dropping. Utility Model Content

[0004] This utility model discloses a sample boat assembly and a sample introduction system, which solves the technical problem in the prior art where the sample boat is prone to deflection after material is introduced, which is detrimental to improving combustion completeness and thus the accuracy of detection results. It has the technical advantages of reasonable structure, improved positional accuracy of the sample boat after material introduction, and improved accuracy of detection results due to its ability to promote complete combustion. The technical solution adopted is as follows: A sample boat assembly includes a support boat and a sample boat; The support boat is used to support the sample boat upwards, and includes an upward-opening concave cavity, which is larger at the top and smaller at the bottom; The sample boat is used to load the sample, and when the sample boat is housed in the cavity, the side edge of the sample boat is in clearance fit with the side wall of the cavity.

[0005] Based on the above technical solution, the bottom surface of the concave cavity is a plane, and the bottom surface of the sample boat that abuts against the bottom surface of the concave cavity is also a plane.

[0006] Based on the above technical solution, the side wall of the bearing boat forming the cavity includes a notch to facilitate the loading and unloading of the sample boat.

[0007] Based on the above technical solution, the bottom of the carrier boat includes several through holes, which are arranged symmetrically along the axis.

[0008] Based on the above technical solution, the bottom surface of the carrier boat is curved.

[0009] A sample introduction system includes a push rod and a sample boat assembly as described above, wherein the sample boat is oscillating left and right and connected to a first end of the push rod.

[0010] Based on the above technical solution, a U-shaped connector is also included. The first free end of the U-shaped connector passes vertically through the support boat and is hinged to the support boat. The second free end of the U-shaped connector is connected to the push rod.

[0011] Based on the above technical solution, the bottom surface of the U-shaped connector is not higher than the bottom surface of the supporting boat.

[0012] Based on the above technical solution, the bottom surface of the U-shaped connector is an arc surface.

[0013] Based on the above technical solution, the second end of the push rod is provided with a magnetic base, which can drive the push rod and sample boat assembly to move under the action of magnetic force.

[0014] Beneficial effects This invention features a rationally designed structure. In the sample boat assembly, the inner cavity of the supporting boat is conical, wider at the top and narrower at the bottom. This design guides the sample boat as it is placed within the cavity, ensuring it is positioned correctly. This reduces the likelihood of the sample boat becoming misaligned after placement, preventing sample accumulation on one side and ensuring complete combustion, which could affect the accuracy of the test results. Furthermore, when the sample boat is placed within the cavity, it is fitted with the supporting boat with a clearance fit. This design provides good tolerance for the relative positional accuracy of the sample boat and the supporting boat. Even if the relative positional accuracy between the sample boat and the supporting boat is low during placement, the cavity's design (wider at the top and narrower at the bottom) allows for automatic alignment during placement, further improving the positional accuracy of the sample boat after placement.

[0015] In this invention, the bottom surfaces of the support boat and the sample boat are in plane-to-plane contact, providing good support stability and facilitating automatic alignment when the sample boat is dropped. In addition, the side wall of the support boat includes a notch, which facilitates the loading and unloading of the sample boat and is conducive to automation.

[0016] In this invention, the bottom of the support boat includes several through holes. When the airflow in the combustion tube impacts the sample boat assembly upwards, the airflow can diffuse through the through holes, buffering and dispersing the airflow, thus preventing the support boat from vibrating due to the airflow impact. The structural design is ingenious.

[0017] The sample introduction system of this invention is rationally designed, with a left-right swinging connection between the support boat and the first end of the push rod. This ensures the smoothness and flexibility of the push rod's advancement process, preventing the push rod from breaking or jamming due to obstruction. Furthermore, the U-shaped connector between the support boat and the push rod ensures that the bottom surface of the U-shaped connector abuts against the bottom surface of the channel containing the push rod during advancement. This prevents the sample boat assembly and push rod from forming a cantilever structure that could affect their service life, and also avoids vibration of the support boat and the sample boat caused by friction with the support boat. The design is therefore highly efficient. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of this utility model. For those skilled in the art, other embodiments can be derived from the provided drawings without creative effort.

[0019] Figure 1 : A three-dimensional structural diagram of the sample boat assembly in this utility model; Figure 2 : An exploded view of the three-dimensional sample boat assembly in this utility model; Figure 3 : A three-dimensional structural diagram of the sample introduction system in this utility model; Figure 4 : A partially enlarged structural schematic diagram of the main view of the sample introduction system in this utility model; Detailed Implementation The following description and accompanying drawings fully illustrate specific embodiments described herein to enable those skilled in the art to practice them. Some embodiments may include or substitute parts and features of other embodiments. The scope of the embodiments herein encompasses the entire scope of the claims and all available equivalents thereof. Throughout this document, the terms “first,” “second,” etc., are used only to distinguish one element from another without requiring or implying any actual relationship or order between the elements. Indeed, a first element can also be referred to as a second element, and vice versa. Furthermore, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a structure, apparatus, or device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a structure, apparatus, or device. Without further limitation, an element defined by the phrase “comprising one…” does not exclude the presence of other identical elements in the structure, apparatus, or device that includes said element. The various embodiments described herein are presented in a progressive manner, with each embodiment focusing on its differences from other embodiments; similar or identical parts between embodiments can be referred to interchangeably.

[0020] The terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" used in this document to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings. They are used solely for the convenience of describing the document and for 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 the invention. In the description herein, unless otherwise specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two elements; they can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0021] In this document, unless otherwise stated, the term "multiple" means two or more.

[0022] In this article, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0023] In this article, the term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0024] like Figure 1 and2 The sample boat assembly shown includes a support boat 1 and a sample boat 2; The support boat 1 is used to support the sample boat 2 upwards, including an upward-opening concave cavity 13, such as... Figure 2 As shown, the concave cavity 13 is larger at the top and smaller at the bottom, and the concave cavity 13 is generally elongated. The two ends of the concave cavity 13 are spherical, and the inner wall surface connecting the two ends of the concave cavity is an arc surface with the arc opening extending inward. In this way, when the sample boat 2 is dropped into the concave cavity 13 of the carrying boat 1, the sample boat 2 can be guided, so that the sample boat 2 is placed in the concave cavity 13 in the correct position. This can reduce the probability of the sample boat 2 being misaligned after being dropped. In other embodiments of this utility model, the concave cavity 13 is larger at the top and smaller at the bottom, and the two ends of the concave cavity 13 are conical.

[0025] Sample boat 2 is used to load samples. When sample boat 2 is placed in cavity 13, the side edge of sample boat 2 is clearance-fitted with the side wall of cavity 13, and the outer edge of sample boat 2 is adapted to the inner wall of cavity 13. In this way, on the one hand, the relative positional accuracy of sample boat 2 and carrier boat 1 is well-accommodated; on the other hand, even if the relative positional accuracy of sample boat 2 and carrier boat 1 is low during material unloading, the design of cavity 13, which is larger at the top and smaller at the bottom and has a clearance fit with sample boat 2, can enable sample boat 2 to automatically align during material unloading, thus improving the positional accuracy of sample boat 2 after material unloading.

[0026] like Figure 2 As shown, the bottom surface of the concave cavity 13 is a plane, and the bottom surface of the sample boat 2 that abuts against the bottom surface of the concave cavity 13 is also a plane, thus providing good support stability.

[0027] The side wall of the support boat 1 forming the cavity 13 includes a notch 11, so that when the sample boat 2 is picked up and put down using the gripper, the gripper can be effectively avoided, making it convenient to pick up and put down the sample boat 2.

[0028] like Figure 2 As shown, the bottom of the support boat 1 includes several through holes 12. In this embodiment, the through holes 12 are arranged in three rows, with the middle row of through holes 12 arranged along the axis of the support boat 1, and the other two rows arranged side by side. When the airflow in the combustion tube impacts the sample boat assembly upwards, the airflow can diffuse through the through holes 12, avoiding vibration of the support boat 1 due to airflow impact. The structural design is ingenious.

[0029] like Figure 3 As shown, the bottom surface of the support boat 1 is curved, which can better disperse and buffer the upward airflow, and facilitate the airflow to continue to diffuse from both sides of the support boat 1, reducing the impact of the airflow on the support boat 1.

[0030] like Figure 3 and 4The sample introduction system shown includes a push rod 3 and a sample boat assembly as described above, and also includes a U-shaped connector 4. The first free end of the U-shaped connector 4 passes vertically through the carrier boat 1 and is hinged to the carrier boat 1. The second free end of the U-shaped connector 4 is fixedly connected to the push rod 3. Thus, the carrier boat 1 can swing left and right and is connected to the first end of the push rod 2.

[0031] like Figure 4 As shown, the bottom surface of the U-shaped connector 4 is slightly lower than the bottom surface of the support boat 1. This ensures that during the advancement of the push rod 3, the bottom surface of the U-shaped connector 4 contacts the bottom surface of the channel where the push rod 3 is located. This avoids the sample boat assembly and the push rod 3 forming a cantilever structure that could affect their service life, and also prevents friction with the support boat 1 from causing vibration of the support boat 1 and the sample boat 2 on it. The design is reasonable. Furthermore, the cross-section of the U-shaped connector 4 is circular, making the bottom surface of the U-shaped connector 4 an arc surface, which helps improve the smoothness of sliding.

[0032] like Figure 3 and 4 As shown, the second end of the push rod 3 is provided with a magnetic base 5, which can drive the push rod 3 and the sample boat assembly to move under the action of magnetic force.

[0033] The present invention has been described above by way of example, but the present invention is not limited to the specific embodiments described above. Any modifications or variations made based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A sample boat assembly, characterized in that, Includes a carrier boat (1) and a sample boat (2); The support boat (1) is used to support the sample boat (2) upwards, and includes an upward-opening concave cavity (13), which is larger at the top and smaller at the bottom; The sample boat (2) is used to load the sample, and when the sample boat (2) is housed in the cavity (13), the side edge of the sample boat (2) is in clearance fit with the side wall of the cavity (13).

2. The sample boat assembly according to claim 1, characterized in that, The bottom surface of the concave cavity (13) is a plane, and the bottom surface of the sample boat (2) that abuts against the bottom surface of the concave cavity (13) is also a plane.

3. The sample boat assembly according to claim 1, characterized in that, The sidewall of the carrier boat (1) forming the cavity (13) includes a notch (11) to facilitate the loading and unloading of the sample boat (2).

4. The sample boat assembly according to claim 1, characterized in that, The bottom of the carrier boat (1) includes a plurality of through holes (12), which are arranged symmetrically along the axis.

5. The sample boat assembly according to claim 4, characterized in that, The bottom surface of the carrier boat (1) is curved.

6. A sample introduction system, characterized in that, Includes a push rod (3) and a sample boat assembly as described in any one of claims 1 to 5, wherein the carrier boat (1) is swayably connected to the first end of the push rod (3).

7. The sample introduction system according to claim 6, characterized in that, It also includes a U-shaped connector (4), the first free end of which passes vertically through the carrier boat (1) and is hinged to the carrier boat (1), and the second free end of which is connected to the push rod (3).

8. The sample introduction system according to claim 7, characterized in that, The bottom surface of the U-shaped connector (4) is not higher than the bottom surface of the support boat (1).

9. The sample introduction system according to claim 8, characterized in that, The bottom surface of the U-shaped connector (4) is an arc surface.

10. The sample introduction system according to any one of claims 6 to 9, characterized in that, The second end of the push rod (3) is provided with a magnetic base (5), which can drive the push rod (3) and the sample boat assembly to move under the action of magnetic force.

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