Adjustable sample holder for nitrogen blow concentrator

Abstract

The utility model discloses an adjustable sample holder for nitrogen blow concentration appearance, related to sample pretreatment technical field, this sample holder includes the frame body, from top to bottom detachable setting upper limit stop plate, lower limit stop plate and the supporting plate on the frame body to set up the self -adaptation clamping mechanism on upper limit stop plate, and the straight line array is opened to have a plurality of waist type through -hole on upper limit stop plate and lower limit stop plate, and the central axis of a plurality of waist type through -hole on lower limit stop plate and the central axis of a plurality of waist type through -hole on upper limit stop plate are one -to -one correspondence collinear, the self -adaptation clamping mechanism makes the central axis of test tube placed in any waist type through -hole all with the central axis of waist type through -hole collinear or parallel. Through the setting of self -adaptation clamping mechanism, it cooperates with waist type through -hole and uses, can cover the test tube specification commonly used in laboratory, reduces sample holder replacement frequency, promotes experimental efficiency, and upper limit stop plate, lower limit stop plate and supporting plate cooperate and make test tube get stable support in vertical direction, prevent the inclination, ensure solid -phase extraction process stable.

Description

Technical Field

[0001] This utility model relates to the field of sample pretreatment technology, and more specifically, to an adjustable sample holder for a nitrogen blowing concentrator. Background Technology

[0002] During the operation of a nitrogen blowdown concentrator, the sample rack, as a key component for holding sample tubes, is of paramount importance in terms of its applicability and ease of adjustment. Different experimental projects and sample types require different test tube specifications, with common test tube diameters ranging from 10mm to 20mm.

[0003] Traditional sample racks are often only compatible with a single or limited number of test tube sizes. When processing samples from test tubes of different diameters, it is necessary to frequently change the sample rack, which is cumbersome and time-consuming, seriously affecting experimental efficiency, increasing the workload of operators and the probability of errors. Furthermore, in some multi-channel solid-phase extraction instruments, if the sample rack is not well compatible with test tubes of different sizes, it may also cause positional deviations of the samples during the extraction process, affecting the consistency and accuracy of the extraction results. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide an adjustable sample rack for a nitrogen blowing concentrator.

[0005] The objective of this utility model is achieved through the following technical solution: An adjustable sample holder for a nitrogen blowing concentrator includes a frame, an upper limit plate, a lower limit plate, and a support plate detachably mounted on the frame from top to bottom, and an adaptive clamping mechanism mounted on the upper limit plate. Both the upper and lower limit plates have a plurality of oblong through holes arranged in a linear array. The central axes of the oblong through holes on the lower limit plate and the central axes of the oblong through holes on the upper limit plate are collinear and correspond one-to-one. The adaptive clamping mechanism ensures that the central axis of any test tube placed within an oblong through hole is collinear or parallel to the central axis of the oblong through hole.

[0006] Furthermore, in this utility model, the adaptive clamping mechanism includes a plurality of elastic claws disposed on the upper limit plate. Each waist-shaped through hole on the upper limit plate is provided with an elastic claw at an inclination, and the elastic claws fix the test tube in the waist-shaped through hole.

[0007] Furthermore, in this utility model, any of the above-mentioned elastic claws has a connecting end and an abutting end for fixing the test tube in the waist-shaped through hole. The connecting end is connected to the upper limit plate, and the abutting end is located between the upper limit plate and the lower limit plate. In the horizontal direction, in the natural state, the distance between the abutting end and the central axis of the corresponding waist-shaped through hole is less than the radius of the waist-shaped through hole.

[0008] Furthermore, in this utility model, the distance between the lower limit plate and the upper limit plate, and the distance between the support plate and the upper limit plate, can both be adjusted.

[0009] Furthermore, in this utility model, both sides of the frame are provided with a plurality of screw holes arranged in a linear array, and the arrangement direction of the plurality of screw holes on any side of the frame is parallel to the central axis of any of the waist-shaped through holes; the two ends of the lower limiting plate and the two ends of the support plate are respectively threaded to the corresponding screw holes.

[0010] The beneficial effects of this utility model are: 1. Excellent compatibility: With the adaptive clamping mechanism and the waist-shaped through hole, it can cover commonly used test tube sizes in the laboratory, reduce the frequency of sample rack replacement and improve experimental efficiency. 2. Easy adjustment: The vertical positions of the lower limit plate and the support plate are adjustable to accommodate test tubes of different lengths. The operation is simple and the applicability is further expanded. 3. Stable structure: The upper limit plate, lower limit plate and support plate work together to provide stable vertical support for the test tube, prevent tilting and ensure the stability of the solid phase extraction process; 4. High versatility: It is compatible with different models of nitrogen blowing concentrators, reducing the cost of laboratory equipment. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model; Figure 2 for Figure 1 Front view; Figure 3 This is a schematic diagram of the structure of the elastic claw in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the test tube being fixed in the waist-shaped through hole by an elastic claw according to an embodiment of the present invention.

[0012] In the diagram: 101 - frame; 201 - upper limit plate; 301 - lower limit plate; 401 - support plate; 501 - waist-shaped through hole; 601 - elastic claw; 701 - test tube. Detailed Implementation

[0013] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0014] Please see Figure 1-4 This utility model provides a technical solution: An adjustable sample holder for a nitrogen blowing concentrator includes a frame 101, an upper limit plate 201, a lower limit plate 301, and a support plate 401 detachably mounted on the frame 101 from top to bottom, and an adaptive clamping mechanism mounted on the upper limit plate 201. Both the upper limit plate 201 and the lower limit plate 301 have a plurality of oblong through holes 501 arranged in a linear array. The central axes of the oblong through holes 501 on the lower limit plate 301 and the central axes of the oblong through holes 501 on the upper limit plate 201 are collinear and correspond one-to-one. The adaptive clamping mechanism ensures that the central axis of a test tube 701 placed in any oblong through hole 501 is collinear or parallel to the central axis of the oblong through hole 501.

[0015] Specifically, in this embodiment, the adaptive clamping mechanism includes a plurality of elastic claws 601 mounted on the upper limit plate 201. Each waist-shaped through hole 501 on the upper limit plate 201 is provided with an elastic claw 601 at an inclination, and the elastic claws 601 fix the test tube 701 in the waist-shaped through hole 501.

[0016] like Figure 4 As shown, the arbitrary elastic claw 601 has a connecting end and an abutting end that fixes the test tube 701 in the waist-shaped through hole 501. The connecting end is connected to the upper limit plate 201, and the abutting end is located between the upper limit plate 201 and the lower limit plate 301. In the horizontal direction, the distance between the abutting end and the central axis of the corresponding waist-shaped through hole 501 in the natural state is less than the radius of the waist-shaped through hole 501.

[0017] like Figure 3 As shown, in some embodiments of this example, to facilitate the installation of the elastic claw 601, it can be installed as follows: Figure 3 In this manner, a corresponding number of elastic claws 601 are installed at intervals on the mounting strip (not marked in the figure) according to the number of a row of waist-shaped through holes 501, and then the mounting strip is installed on the upper limit plate 201.

[0018] In order to make this sample rack adaptable to test tubes 701 of different lengths, the distance between the lower limit plate 301 and the upper limit plate 201 and the distance between the support plate 401 and the upper limit plate 201 can be adjusted in this embodiment.

[0019] Specifically, in this embodiment, both sides of the frame 101 are provided with a number of screw holes arranged in a linear array. The arrangement direction of the screw holes on any side of the frame 101 is parallel to the central axis of any oblong through hole 501. The two ends of the lower limit plate 301 and the two ends of the support plate 401 are respectively connected to the corresponding screw holes by bolt threads. In this way, when the lower limit plate 301 and the support plate 401 are at different heights in the vertical direction, they can be adapted to test tubes 701 of different lengths.

[0020] Working principle: like Figure 4 As shown, after the test tube 701 is fixed in the upper and lower waist-shaped through holes 501 by the elastic claw 601, the bottom end of the test tube 701 abuts against the support plate 401, so that the test tube 701 can be placed vertically on the frame 101. As long as the upper limit plate 201, the lower limit plate 301 and the support plate 401 are all in a horizontal position, the test tube 701 will not tilt, ensuring the stability of the solid phase extraction process.

[0021] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. An adjustable sample rack for a nitrogen blowing concentrator, characterized in that: The device includes a frame (101), an upper limit plate (201), a lower limit plate (301), and a support plate (401) that are detachably mounted on the frame (101) from top to bottom, and an adaptive clamping mechanism mounted on the upper limit plate (201). The upper limit plate (201) and the lower limit plate (301) are provided with a plurality of waist-shaped through holes (501) arranged in a linear array. The central axis of the plurality of waist-shaped through holes (501) on the lower limit plate (301) and the central axis of the plurality of waist-shaped through holes (501) on the upper limit plate (201) are collinear and correspond one-to-one. The adaptive clamping mechanism ensures that the central axis of the test tube (701) placed in any of the waist-shaped through holes (501) is collinear or parallel to the central axis of the waist-shaped through hole (501).

2. The adjustable sample holder for a nitrogen blowing concentrator according to claim 1, characterized in that: The adaptive clamping mechanism includes a plurality of elastic claws (601) disposed on the upper limit plate (201). Each waist-shaped through hole (501) on the upper limit plate (201) is provided with an elastic claw (601) at an inclination. The elastic claws (601) fix the test tube (701) in the waist-shaped through hole (501).

3. The adjustable sample holder for a nitrogen blowing concentrator according to claim 2, characterized in that: Any of the elastic claws (601) has a connecting end and an abutting end that fixes the test tube (701) in the waist-shaped through hole (501). The connecting end is connected to the upper limit plate (201), and the abutting end is located between the upper limit plate (201) and the lower limit plate (301). In the horizontal direction, in the natural state, the distance between the abutting end and the central axis of the corresponding waist-shaped through hole (501) is less than the radius of the waist-shaped through hole (501).

4. An adjustable sample holder for a nitrogen blowing concentrator according to any one of claims 1-3, characterized in that: The distance between the lower limit plate (301) and the upper limit plate (201), and the distance between the support plate (401) and the upper limit plate (201) can both be adjusted.

5. An adjustable sample holder for a nitrogen blowing concentrator according to claim 4, characterized in that: The frame (101) has several screw holes arranged in a straight line on both sides. The arrangement direction of the screw holes on any side of the frame (101) is parallel to the central axis of any waist-shaped through hole (501). The two ends of the lower limit plate (301) and the two ends of the support plate (401) are respectively threaded to the corresponding screw holes.

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