Auxiliary sampling device of chromatographic instrument

Abstract

The utility model provides an auxiliary sample introduction device of a chromatograph, which comprises a support and a lofting panel detachably mounted on the support, the lofting panel comprises an outer panel and an inner panel, the outer panel is provided with a plurality of forward lofting holes, and the inner panel is provided with a plurality of reverse lofting holes. Reverse lofting holes corresponding to the forward lofting holes are respectively formed in the inner layer panel; a lateral moving sliding groove is formed in the position, corresponding to the inner layer panel, in the outer layer panel, the overlapping area of the forward lofting hole and the reverse lofting hole can be adjusted through pushing of the inner layer panel in the lateral moving sliding groove, when the overlapping area is the smallest, a sample tube can be placed in the overlapping area, and when the overlapping area is the smallest, the sample tube can be placed in the sample tube. When the overlap region is maximum, a sample tube may pass therethrough. The auxiliary sample introduction device of the chromatograph has the advantages of scientific design, convenience in operation, no order disruption during transfer and high practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of chromatographs, and specifically, to an auxiliary sample injection device for a chromatograph. Background Art

[0002] Generally, a chromatograph is provided with a supporting sample injection rack. A number of sample tube holes are neatly arranged on the sample injection rack. During use, samples need to be placed on the sample injection rack in sequence, and a probe is used to sequentially extract samples from the sample tubes. To facilitate sample loading, traditional chromatographs generally come with two sample injection racks. In this way, when one sample injection rack is in use, staff can place the next batch of samples on the other sample injection rack. However, during use, the sample injection rack may sometimes be lost or accidentally damaged. Since ordinary sample racks do not match the sample injection rack, samples need to be temporarily stored on an ordinary sample rack first and then transferred to the sample injection rack. However, during the transfer process, it is easy to disrupt the order slightly, resulting in incorrect final analysis results.

[0003] In order to solve the above problems, people have been seeking an ideal technical solution. Summary of the Invention

[0004] The purpose of the utility model is to address the deficiencies of the prior art, and thus provide an auxiliary sample injection device for a chromatograph that is scientifically designed, easy to operate, will not disrupt the order during transfer, and has strong practicability.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: an auxiliary sample injection device for a chromatograph, including a bracket and a sample placement panel detachably installed on the bracket. The sample placement panel includes an outer panel and an inner panel. A number of forward sample placement holes are provided on the outer panel, and reverse sample placement holes corresponding to each of the forward sample placement holes are respectively provided on the inner panel. A side shift chute is provided in the outer panel corresponding to the inner panel. By shifting the inner panel in the side shift chute, the overlapping area of the forward sample placement holes and the reverse sample placement holes can be adjusted. When the overlapping area is the smallest, a sample tube can be placed therein. When the overlapping area is the largest, the sample tube can pass through it.

[0006] Based on the above, an end rod is provided on one side of the inner panel extending out of the side shift chute. The two ends of the end rod extend beyond the two ends of the inner panel. A return spring is respectively connected between the two ends of the end rod and the frame of the outer panel. In the natural state of the return spring, the overlapping area of the forward sample placement holes and the reverse sample placement holes is the smallest. When the return spring is compressed to the shortest state, the overlapping area of the forward sample placement holes and the reverse sample placement holes is the largest.

[0007] Based on the above, the bracket includes a bottom plate and vertical baffles arranged at both ends of the bottom plate. Steps are provided on the inner sides of the vertical baffles, and both ends of the outer panel are placed on the two steps.

[0008] Based on the above, both the forward lofting hole and the reverse lofting hole include a square hole and an arc-shaped notch located on one side of the square hole. The arc-shaped notches in the forward lofting hole and the reverse lofting hole are arranged opposite to each other. The square hole is for the sample tube to pass through, and the arc-shaped notch is for clamping the sample tube.

[0009] The present utility model has substantial features and progress compared with the prior art. Specifically, by providing the side shift chute inside the outer panel of the present utility model, the inner panel can slide relative to the outer panel to adjust the overlapping area of the forward lofting hole and the reverse lofting hole, and the positions of the forward lofting hole and the reverse lofting hole are set to correspond to the holes on the sample injection rack of the chromatograph. During use, first, the overlapping area is adjusted to the minimum. The staff arranges the sample tubes on the lofting panel in sequence. When loading the sample, the lofting panel is taken off the bracket, the position is adjusted so that the lofting holes are aligned with the holes on the sample injection rack, and then the inner panel is pushed to adjust the overlapping area to the maximum, and the lofting tubes will fall into the sample injection rack together. It has the advantages of scientific design, convenient operation, no disorder in sequence during transfer, and strong practicability.

[0010] Furthermore, the arrangement of the end rod facilitates the pushing and pulling of the inner panel. The arrangement of the return spring makes the overlapping area of the forward lofting hole and the reverse lofting hole the minimum in the natural state, and it can be directly used to place the sample tubes. By providing the steps on the inner sides of the vertical baffles, it is convenient for both ends of the outer panel to be directly placed on the two steps, and it is very convenient to take and place the lofting panel. Description of the Drawings

[0011] Figure 1 It is a schematic structural view of the lofting panel of the present utility model in one state.

[0012] Figure 2 It is a schematic structural view of the lofting panel of the present utility model in another state.

[0013] Figure 3 It is a cross-sectional view of the side shift chute of the present utility model.

[0014] Figure 4 It is a front view of the chromatograph auxiliary sample injection device of the present utility model.

[0015] Figure 5 It is a schematic structural view of the forward lofting hole and the reverse lofting hole of the present utility model.

[0016] In the figure: 1. Lofting panel; 2. Bottom plate; 3. Vertical baffle; 4. Step; 5. Outer panel; 6. Inner panel; 7. Forward lofting hole; 8. Reverse lofting hole; 9. Side shift chute; 10. Square hole; 11. Arc notch; 12. End rod; 13. Return spring. Specific embodiments

[0017] The technical solution of the present utility model will be further described in detail below through specific embodiments.

[0018] As Figures 1-5 shown, a chromatograph auxiliary sample injection device includes a bracket and a lofting panel 1. The bracket specifically includes a bottom plate 2 and vertical baffles 3 provided at both ends of the bottom plate 2. A step 4 is provided inside the vertical baffles 3; the lofting panel 1 includes an outer panel 5 and an inner panel 6. Both ends of the outer panel 5 are directly and movably placed on the two steps 4, which facilitates the removal of the lofting panel 1.

[0019] A number of forward lofting holes 7 ( Figure 1 , Figure 2 solid lines in Figure 1 are shown) are provided on the outer panel 5. Corresponding to each forward lofting hole 7, a reverse lofting hole 8 ( Figure 2 dashed lines in

[0020] is shown) is provided on the inner panel 6. Among them, the positions of the lofting holes should correspond to the holes on the sample injection rack of the chromatograph; a side shift chute 9 is provided inside the outer panel 5 corresponding to the inner panel 6. By pushing the inner panel 6 in the side shift chute 9, the overlapping area of the forward lofting hole 7 and the reverse lofting hole 8 can be adjusted. When the overlapping area is the smallest, the sample tube can be placed therein. When the overlapping area is the largest, the sample tube can pass through it.

[0021] To make the operation more convenient, an end rod 12 is provided on one side of the inner panel 6 extending out of the side shift chute 9. The two ends of the end rod 12 extend beyond the two ends of the inner panel 6, and reset springs 13 are respectively connected between the two ends of the end rod 12 and the frame of the outer panel 5. When the reset springs 13 are in the natural state, the overlapping area of the forward lofting hole 7 and the reverse lofting hole 8 is the smallest. When the reset springs 13 are compressed to the shortest state, the overlapping area of the forward lofting hole 7 and the reverse lofting hole 8 reaches the largest.

[0022] Working principle:

[0023] First, place both ends of the lofting panel 1 on the two steps 4. At this time, under the action of the reset springs 13, the overlapping area of the forward lofting hole 7 and the reverse lofting hole 8 is in the smallest state. In sequence, place the sample tubes in the lofting holes. After arranging them, take out the sampling rack of the chromatograph, lift the lofting panel 1, adjust the position so that the lofting holes are aligned with the holes on the sampling rack, push the inner panel 6, adjust the overlapping area to the largest, and the lofting tubes will fall into the sampling rack together, thus avoiding disordering the order during transfer.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that it is still possible to modify the specific implementation manners of the present invention or perform equivalent replacements for some technical features. Without departing from the spirit of the technical solutions of the present invention, they should all be covered within the scope of the technical solutions claimed by the present invention.

Claims

1. A chromatograph auxiliary sample injection device, characterized in that: It includes a bracket and a lofting panel detachably mounted on the bracket. The lofting panel includes an outer panel and an inner panel. A number of forward lofting holes are provided on the outer panel, and reverse lofting holes corresponding to each of the forward lofting holes are respectively provided on the inner panel; a side shift chute is provided inside the outer panel corresponding to the inner panel. By pushing the inner panel in the side shift chute, the overlapping area of the forward lofting holes and the reverse lofting holes can be adjusted. When the overlapping area is the smallest, the sample tube can be placed therein. When the overlapping area is the largest, the sample tube can pass through it.

2. The chromatograph auxiliary sample injection device according to claim 1, characterized in that: An end rod is provided on one side of the inner panel extending out of the side shift chute. The two ends of the end rod extend beyond the two ends of the inner panel. Return springs are respectively connected between the two ends of the end rod and the frame of the outer panel; in the natural state of the return spring, the overlapping area of the forward lofting holes and the reverse lofting holes is the smallest. When the return spring is compressed to the shortest state, the overlapping area of the forward lofting holes and the reverse lofting holes is the largest.

3. The chromatograph auxiliary sample injection device according to claim 2, characterized in that: The bracket includes a bottom plate and vertical baffles provided at both ends of the bottom plate. Steps are provided inside the vertical baffles, and the two ends of the outer panel are placed on the two steps.

4. The chromatograph auxiliary sample injection device according to any one of claims 1-3, characterized in that: Both the forward lofting hole and the reverse lofting hole include a square hole and an arc-shaped notch located on one side of the square hole. The arc-shaped notch in the forward lofting hole and the arc-shaped notch in the reverse lofting hole are arranged oppositely. The square hole is for the sample tube to pass through, and the arc-shaped notch is for clamping the sample tube.

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