Solid sample fluorescence luminescence detection device

Abstract

The utility model relates to the technical field of spectral measurement, and provides a solid sample fluorescence luminescence detection device which comprises a main body provided with a sample cavity; the air inlet pipe is arranged on one side of the main body, the air inlet pipe is communicated with the sample cavity, a first branch pipe is arranged on the outer side of the air inlet pipe, and the first branch pipe is communicated with the air inlet pipe; the first sealing plug is arranged to be capable of being inserted into the air inlet pipe from the free end of the air inlet pipe and blocking the air inlet pipe and the first branch pipe; the air outlet pipe is arranged on the other side of the main body and is communicated with the sample cavity, and a second branch pipe is arranged on the outer side of the air outlet pipe and is communicated with the air outlet pipe; the second sealing plug is arranged to be capable of being inserted into the air outlet pipe from the free end of the air outlet pipe and plugging the air outlet pipe and the second branch pipe; according to the utility model, fluorescence testing can be carried out on a solid sample in a vacuum environment or in various gas atmospheres, the air tightness of the sample cavity does not need to be maintained through an external air pump and a pipeline, and the testing efficiency of a fluorescence spectrum in the vacuum or gas atmosphere is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of spectrum measurement, in particular to a solid sample fluorescence luminescence detection device. Background Art

[0002] For fluorescence luminescence testing under vacuum or gas atmosphere, most of the common sample chambers on the market need to be customized according to the structure of the fluorescence spectrometer, or replaced with other accessories with gas exchange function.

[0003] An existing variable temperature chamber mainly includes components such as a vacuum pump, a vacuum low-temperature sample chamber, a temperature sensor and a temperature controller. The sample to be tested is placed in the center of the low-temperature chamber, and the chamber where the sample is located is evacuated to a high vacuum or filled with inert gas through a vacuum pump to meet the fluorescence spectrum test requirements under different environments; however, the device is large in size and complicated to operate. When in use, it is necessary to always connect an external air pump and pipeline for vacuum operation, so it is difficult to adjust the optical path; in addition, for tests that require repeated inflation and deflation or replacement of samples in the middle, the sample replacement time is long and the test efficiency is low. Utility Model Content

[0004] The utility model provides a solid sample fluorescence luminescence detection device, which is used to solve the problems of complex operation and poor versatility in the fluorescence spectrum testing device of the prior art.

[0005] The utility model provides a solid sample fluorescence luminescence detection device, comprising:

[0006] A main body, provided with a sample cavity;

[0007] An air inlet pipe is arranged at one side of the main body, the air inlet pipe is communicated with the sample chamber, a first branch pipe is arranged on the outer side of the air inlet pipe, and the first branch pipe is communicated with the air inlet pipe;

[0008] A first sealing plug, configured to be inserted into the air intake pipe from a free end of the air intake pipe and to seal the air intake pipe and the first branch pipe;

[0009] An air outlet pipe is arranged on the other side of the main body, the air outlet pipe is communicated with the sample chamber, a second branch pipe is arranged on the outer side of the air outlet pipe, and the second branch pipe is communicated with the air outlet pipe;

[0010] The second sealing plug is configured to be inserted into the air outlet pipe from the free end of the air outlet pipe and seal the air outlet pipe and the second branch pipe.

[0011] According to the solid sample fluorescence luminescence detection device provided by the utility model, a first sealed channel is provided in the air inlet pipe, the first sealed channel includes a first connecting hole and a first tapered hole, the expanded end of the first tapered hole is connected to the first connecting hole, the contracted end of the first tapered hole is connected to the sample cavity, and the first branch pipe is connected to the first connecting hole;

[0012] The first sealing plug includes a first cylindrical section and a first conical section, the first cylindrical section is adapted to the first connecting hole, and the first conical section is adapted to the first conical hole.

[0013] According to the solid sample fluorescence luminescence detection device provided by the utility model, a second sealed channel is provided in the air inlet pipe, the second sealed channel includes a second connecting hole and a second tapered hole connected to each other, the expanded end of the second tapered hole is connected to the second connecting hole, the contracted end of the second tapered hole is connected to the sample cavity, and the second branch pipe is connected to the second connecting hole;

[0014] The second sealing plug includes a second cylindrical section and a second conical section, the second cylindrical section is adapted to the second connecting hole, and the second conical section is adapted to the second conical hole.

[0015] According to the solid sample fluorescence luminescence detection device provided by the utility model, the first conical section is provided with a first sealing ring.

[0016] According to the solid sample fluorescence luminescence detection device provided by the utility model, the second conical section is provided with a second sealing ring.

[0017] According to the solid sample fluorescence luminescence detection device provided by the utility model, a first transition channel is arranged in the air inlet pipe, a first end of the first transition channel is connected to the first conical hole, and a second end of the first transition channel is connected to the sample cavity.

[0018] According to the solid sample fluorescence luminescence detection device provided by the utility model, a second transition channel is provided in the outlet pipe, a first end of the second transition channel is connected to the second conical hole, and a second end of the second transition channel is connected to the sample cavity.

[0019] According to the solid sample fluorescence luminescence detection device provided by the utility model, the main body includes a shell and a cover plate, the air inlet pipe and the air outlet pipe are both connected to the shell, a sample slot is provided at the first end of the shell, and the cover plate is connected to the first end of the main body for closing the sample slot to form the sample cavity.

[0020] According to the solid sample fluorescence luminescence detection device provided by the utility model, a mounting groove is provided at the first end of the shell, and the mounting groove is arranged around the opening of the sample groove and is used for installing a sealing ring.

[0021] According to the solid sample fluorescence luminescence detection device provided by the utility model, the cover plate is provided with a mounting opening, the mounting opening corresponds to the sample slot, and a transparent window plate is installed in the mounting opening.

[0022] The utility model provides a solid sample fluorescence luminescence detection device. Since both the air inlet pipe and the air outlet pipe are connected to the sample cavity, the sample cavity can be inflated or evacuated, and the sample cavity can be evacuated or filled with any required gas to perform fluorescence testing in a vacuum environment, or fluorescence testing in various gas atmospheres can be performed through inflation operations, so that it can be applied to different experimental scenarios; since the first sealing plug can be inserted from the free end of the air inlet pipe to successively block the air inlet pipe and the first branch pipe, and the second sealing plug can be inserted from the free end of the air outlet pipe to block the air outlet pipe and the second branch pipe, during operation, the first sealing plug can be controlled to be in contact with the air inlet pipe. The connection degree of the tube and the connection degree of the second sealing plug with the air outlet pipe only connect the first branch pipe with the sample cavity, or connect the second branch pipe with the sample cavity, so as to realize inflation or vacuuming into the sample cavity through the first branch pipe or the second branch pipe. After the inflation or vacuuming is completed, the first branch pipe is sealed by the first sealing plug in the air inlet pipe, or the second branch pipe is further sealed by the second sealing plug in the air outlet pipe, so as to conveniently and quickly ensure the airtightness of the sample cavity, so that in subsequent tests, there is no need to maintain the airtightness of the sample cavity through an external air pump and pipeline, which simplifies the operation, saves costs, and improves the test efficiency of fluorescence spectrum in vacuum or gas atmosphere. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a structural schematic diagram of a solid sample fluorescence luminescence detection device provided by an embodiment of the utility model;

[0025] Figure 2 It is a cross-sectional view of a solid sample fluorescence luminescence detection device provided by an embodiment of the utility model;

[0026] Figure 3 is a cross-sectional view of a solid sample fluorescence luminescence detection device provided by another embodiment of the utility model;

[0027] Figure 4 It is a cross-sectional view of the connection between the second branch pipe and the air outlet pipe provided in an embodiment of the utility model.

[0028] Reference numerals:

[0029] 1. Main body; 101. Sample chamber; 11. Shell; 12. Cover plate; 102. Mounting slot; 103. Transparent window plate; 104. Connection structure;

[0030] 2. air inlet pipe; 21. first branch pipe; 22. first sealing channel; 221. first connecting hole; 222. first tapered hole; 23. first sealing ring; 24. first transition channel;

[0031] 3. first sealing plug; 31. first cylindrical section; 32. first conical section;

[0032] 4. air outlet pipe; 41. second branch pipe; 42. second sealing channel; 421. second connecting hole; 422. second tapered hole; 43. second sealing ring; 44. second transition channel;

[0033] 5. Second sealing plug; 51. Second cylindrical section; 52. Second conical section. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] Combine the following Figures 1 to 4 A solid sample fluorescence luminescence detection device provided in an embodiment of the utility model is described.

[0036] A solid sample fluorescence luminescence detection device provided in this embodiment includes: a main body 1, an air inlet pipe 2, a first sealing plug 3, an air outlet pipe 4 and a second sealing plug 5. Its sample chamber 101 can be designed in a small size to achieve the function of being portable as a whole. It can be adapted to several commonly used fluorescence spectrometers on the market, such as Edinburgh FLS1000, etc., to replace the original large vacuum accessories.

[0037] Among them, the main body 1 is provided with a sample cavity 101, the air inlet pipe 2 is arranged on one side of the main body 1, the air inlet pipe 2 is connected with the sample cavity 101, and a first branch pipe 21 is arranged on the outer side of the air inlet pipe 2, and the first branch pipe 21 is connected with the air inlet pipe 2; the first sealing plug 3 is arranged to be able to be inserted into the air inlet pipe 2 from the free end of the air inlet pipe 2, and the air inlet pipe 2 and the first branch pipe 21 are blocked; the air outlet pipe 4 is arranged on the other side of the main body 1, the air outlet pipe 4 is connected with the sample cavity 101, and a second branch pipe 41 is arranged on the outer side of the air outlet pipe 4, and the second branch pipe 41 is connected with the air outlet pipe 4; the second sealing plug 5 is arranged to be able to be inserted into the air outlet pipe 4 from the free end of the air outlet pipe 4, and the air outlet pipe 4 and the second branch pipe 41 are blocked.

[0038] The solid sample fluorescence luminescence detection device provided by the utility model can realize inflation or exhaust of the sample chamber 101, because the air inlet pipe 2 and the air outlet pipe 4 are both connected to the sample chamber 101, so that the sample chamber 101 can be evacuated or filled with any desired gas to perform fluorescence testing in a vacuum environment, or fluorescence testing in various gas atmospheres can be performed through inflation operations, so that it can be applied to different experimental scenarios; because the first sealing plug 3 can be inserted from the free end of the air inlet pipe 2 to successively block the air inlet pipe 2 and the first branch pipe 21, and the second sealing plug 5 can be inserted from the free end of the air outlet pipe 4 to block the air outlet pipe 4 and the second branch pipe 41, during operation, the connection degree between the first sealing plug 3 and the air inlet pipe 2 can be controlled As well as the degree of connection between the second sealing plug 5 and the air outlet pipe 4, only the first branch pipe 21 is connected to the sample chamber 101, or the second branch pipe 41 is connected to the sample chamber 101, so as to realize inflation or vacuuming of the sample chamber 101 through the first branch pipe 21 or the second branch pipe 41. After the inflation or vacuuming is completed, the first branch pipe 21 is blocked by the first sealing plug 3 in the air inlet pipe 2, or the second branch pipe 41 is further blocked by the second sealing plug 5 in the air outlet pipe 4, so that the airtightness of the sample chamber 101 is conveniently and quickly ensured, so that in subsequent tests, there is no need for additional external air pumps and pipelines to maintain the airtightness of the sample chamber 101, which simplifies the operation, saves costs, and improves the test efficiency of the fluorescence spectrum in a vacuum or gas atmosphere.

[0039] Furthermore, the main body 1 , the air inlet pipe 2 , the first branch pipe 21 , the air outlet pipe 4 and the second branch pipe 41 are an integrated structure, which can improve the air tightness of the sample chamber 101 .

[0040] It should be noted that, since the gas filled in the sample chamber 101 may be corrosive to a certain extent, the material of the main body 1 should be selected to be corrosion-resistant material, such as metal, and a corrosion-resistant black paint should be sprayed on the surface for application in optical experiments.

[0041] In this embodiment, a first sealing channel 22 is provided in the air intake pipe 2. The first sealing channel 22 includes a first connecting hole 221 and a first tapered hole 222. The first branch pipe 21 is connected to the first connecting hole 221. Figure 2 and Figure 3 As shown, the first connecting hole 221 is a circular hole, and the first conical hole 222 is an inward-retracted structure, that is, the first connecting hole 221 is close to the free end of the air inlet pipe 2, the flared end of the first conical hole 222 is connected to the first connecting hole 221, and the contracted end of the first conical hole 222 is connected to the sample chamber 101; the first sealing plug 3 includes a first cylindrical section 31 and a first conical section 32, the first cylindrical section 31 is adapted to the first connecting hole 221, and the first conical section 32 is adapted to the first conical hole 222.

[0042] With such a configuration, through the cooperation between the tapered hole and the tapered plug, compared with the existing round hole sealing, the tapered plug can better closely contact with the tapered hole, ensure a stable sealing relationship between the two, reduce the possibility of leakage, and improve the overall sealing performance; and, since the first branch pipe 21 is connected to the first connecting hole 221, in the process of withdrawing the first sealing plug 3 outward, the first tapered section 32 of the first sealing plug 3 gradually enters the first connecting hole 221, so that the first branch pipe 21 is connected to the air inlet pipe 2 and the sample chamber 101. At this time, the sample chamber 101 can be inflated or evacuated through the first branch pipe 21. After the operation is completed, the first cylindrical section 31 of the first sealing plug 3 is pushed inward to re-block the first branch pipe 21, thereby eliminating the need for an additional external air pump and pipeline to maintain the airtightness of the sample chamber 101 in subsequent tests, which is beneficial to improving the accuracy of the experiment.

[0043] Furthermore, a second sealed channel 42 is provided in the air outlet pipe 4, and the second sealed channel 42 includes a second connecting hole 421 and a second tapered hole 422 connected to each other, and the second branch pipe 41 is connected to the second connecting hole 421; Figure 2 and Figure 3 As shown, similarly, the second connecting hole 421 is a circular hole, and the second conical hole 422 is an inward-retracted structure, that is, the second connecting hole 421 is close to the free end of the air inlet pipe 2, the flared end of the second conical hole 422 is connected to the second connecting hole 421, and the contracted end of the second conical hole 422 is connected to the sample chamber 101, and the second sealing plug 5 includes a second cylindrical section 51 and a second conical section 52, the second cylindrical section 51 is adapted to the second connecting hole 421, and the second conical section 52 is adapted to the second conical hole 422.

[0044] With such arrangement, a stable sealing relationship is ensured between the second sealing channel 42 and the second sealing plug through the cooperation of the tapered hole and the tapered plug, thereby improving the overall sealing performance; and, since the first branch pipe 21 is connected to the first connecting hole 221, in the process of withdrawing the first sealing plug 3 outward, the first tapered section 32 of the first sealing plug 3 gradually enters the first connecting hole 221, so that the first branch pipe 21 is connected to the air inlet pipe 2 and the sample chamber 101. At this time, the sample chamber 101 can be inflated or evacuated through the first branch pipe 21. After the operation is completed, the first cylindrical section 31 of the first sealing plug 3 is pushed inward to re-block the first branch pipe 21, thereby eliminating the need for an additional external air pump and pipeline to maintain the airtightness of the sample chamber 101 in subsequent tests, thereby helping to improve the accuracy of the experiment.

[0045] Furthermore, the first conical section 32 is provided with a first sealing ring 23, and the second conical section 52 is provided with a second sealing ring 43; in this way, by providing a sealing ring in the conical section of the sealing plug, the sealing ring can be in close contact with the conical hole, so that the vacuum degree or gas atmosphere in the sample chamber 101 area can be maintained, thereby improving the airtightness of the sample chamber 101.

[0046] In some embodiments, the first sealing plug 3 is connected to the first sealing channel 22 by threads to ensure the connection reliability between the first sealing plug 3 and the first sealing channel 22 and the airtightness of the sample chamber 101; similarly, the second sealing plug 5 is connected to the second sealing channel 42 by threads to ensure the connection reliability between the second sealing plug 5 and the second sealing channel 42.

[0047] Optionally, according to the length of the first sealing plug 3 and the second sealing plug 5, a first transition channel 24 is further provided in the air inlet pipe 2, and a second transition channel 44 is provided in the air outlet pipe 4, wherein the first end of the first transition channel 24 is communicated with the first tapered hole 222, and the second end of the first transition channel 24 is communicated with the sample chamber 101; the first end of the second transition channel 44 is communicated with the second tapered hole 422, and the second end of the second transition channel 44 is communicated with the sample chamber 101; wherein the first transition channel 24 and the second transition channel 44 may be cylindrical, or, as Figure 2 and Figure 3 As shown, the first end of the first transition channel 24 is set to a conical structure, and the first end of the first transition channel 24 has the same diameter as the tapered end of the first tapered hole 222, and the first end of the second transition channel 44 is set to a conical structure, and the first end of the second transition channel 44 has the same diameter as the tapered end of the second tapered hole 422.

[0048] In this embodiment, Figure 1As shown, the main body 1 includes a shell 11 and a cover plate 12, the air inlet pipe 2 and the air outlet pipe 4 are both connected to the shell 11, a sample slot is provided at the first end of the shell 11, and the cover plate 12 is connected to the first end of the main body 1 for closing the sample slot to form a sample cavity 101.

[0049] Optionally, the cover plate 12 is detachably connected to the first end of the shell 11. For example, a plurality of threaded holes are evenly arranged on the first end surface of the shell 11, and a plurality of through holes are correspondingly arranged on the cover plate 12. The cover plate 12 is connected to the shell 11 by screws or bolts passing through the through holes and the threaded holes.

[0050] In some embodiments, the shell 11 and the cover plate 12 are both cubic structures, a sample slot is provided in the middle of the first end of the shell 11 , and threaded holes are evenly distributed around the first end of the shell 11 .

[0051] Furthermore, a mounting groove 102 is provided at the first end of the shell 11, and the mounting groove 102 is provided around the opening of the sample groove for installing a sealing ring. For example, a mounting groove 102 in a closed shape such as an annular shape or a rectangular shape is provided around the opening of the sample groove, and a sealing ring is embedded in the mounting groove 102, so that when the cover plate 12 is connected to the first end of the shell 11, the reliability of the connection between the cover plate 12 and the shell 11 is increased, and the airtightness of the sample chamber 101 is improved.

[0052] In this embodiment, the cover plate 12 is provided with an installation opening, which corresponds to the sample slot, and a transparent window plate 103 is installed in the installation opening. The transparent window plate 103 may be made of quartz glass.

[0053] In some embodiments, a connecting structure 104 is provided at the second end of the shell 11, and the connecting structure 104 is used to connect to related equipment. For example, a card block is provided at the second end of the shell 11, and the card block can be plugged and fixed on the sample rack to achieve position adjustment of the solid sample fluorescence luminescence detection device, thereby facilitating adjustment of the position of the solid sample fluorescence luminescence detection device in the optical path.

[0054] The solid sample fluorescence luminescence detection device provided by the utility model can, when performing a vacuum operation, insert the first sealing plug 3 into the air inlet pipe 2 to seal the air inlet pipe 2 and the first branch pipe 21, connect the second branch pipe 41 to the air pump, and screw the second sealing plug 5 to make the second conical section 52 of the second sealing plug 5 enter the second connecting hole 421, so that only the second branch pipe 41 is connected to the sample chamber 101, and then evacuate air through the air pump. During the evacuation process, the air pressure in the sample chamber 101 decreases, and the cover plate 12 is tightly pressed against the sealing ring by the external atmospheric pressure, so as to achieve a good sealing effect. When the exhaust is about to end, the second sealing plug 5 is pushed inward to seal the second branch pipe 41 to achieve a sealing effect, and finally the exhaust is completed by removing the air pump.

[0055] Alternatively, by inserting the second sealing plug 5 into the air outlet pipe 4, the air outlet pipe 4 and the second branch pipe 41 are blocked, the first branch pipe 21 is connected to the air pump, and by twisting the first sealing plug 3, the first conical section 32 of the first sealing plug 3 enters the first connecting hole 221, only the first branch pipe 21 is connected to the sample chamber 101, and then the air is pumped through the air pump. During the pumping process, the air pressure in the sample chamber 101 decreases, and the cover plate 12 is tightly pressed against the sealing ring by the external atmospheric pressure, so that a good sealing effect can be achieved. When the exhaust is about to end, the first sealing plug 3 is pushed inward to block the first branch pipe 21 to achieve a sealing effect, and finally the air pump is removed to complete the exhaust.

[0056] The solid sample fluorescence luminescence detection device provided by the utility model maintains the state that the first sealing plug 3 blocks the air inlet pipe 2 and the first branch pipe 21 when the sample chamber 101 in a vacuum state is inflated, the second sealing plug 5 is loosened to connect the second branch pipe 41 with the sample chamber 101, and the sample chamber 101 is inflated from the second branch pipe 41. When the inflation is about to end, the first sealing plug 3 is slightly loosened to connect the first branch pipe 21 with the sample chamber 101. When it is detected that the gas overflows from the first branch pipe 21, it can be ensured that the sample chamber 101 is filled with the required gas. Then, the first sealing plug 3 and the second sealing plug 5 are tightened to block the first branch pipe 21 and the second branch pipe 41 respectively, and the inflation operation is completed.

[0057] Alternatively, while keeping the second sealing plug 5 blocking the air outlet pipe 4 and the second branch pipe 41, the first sealing plug 3 is loosened to connect the first branch pipe 21 with the sample chamber 101, and the sample chamber 101 is inflated from the first branch pipe 21; when the inflation is about to end, the second sealing plug 5 is slightly loosened to connect the second branch pipe 41 with the sample chamber 101, and when gas overflowing from the second branch pipe 41 is detected, it can be ensured that the sample chamber 101 is filled with the required gas, and then the first sealing plug 3 and the second sealing plug 5 are tightened to block the first branch pipe 21 and the second branch pipe 41 respectively, and the inflation operation is completed.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A solid sample fluorescence detection device, characterized in that: include: A main body (1) is provided with a sample chamber (101); An air inlet pipe (2) is arranged on one side of the main body (1), the air inlet pipe (2) is connected to the sample chamber (101), a first branch pipe (21) is arranged on the outside of the air inlet pipe (2), and the first branch pipe (21) is connected to the air inlet pipe (2); A first sealing plug (3) is arranged to be inserted into the air intake pipe (2) from the free end of the air intake pipe (2) and to seal the air intake pipe (2) and the first branch pipe (21); An air outlet pipe (4) is arranged on the other side of the main body (1), the air outlet pipe (4) is connected to the sample chamber (101), a second branch pipe (41) is arranged on the outside of the air outlet pipe (4), and the second branch pipe (41) is connected to the air outlet pipe (4); The second sealing plug (5) is configured to be inserted into the air outlet pipe (4) from the free end of the air outlet pipe (4) and to seal the air outlet pipe (4) and the second branch pipe (41).

2. The solid sample fluorescence detection device according to claim 1, characterized in that: A first sealed channel (22) is provided in the air inlet pipe (2), the first sealed channel (22) comprising a first connecting hole (221) and a first tapered hole (222), the expanded end of the first tapered hole (222) is connected to the first connecting hole (221), the contracted end of the first tapered hole (222) is communicated with the sample chamber (101), and the first branch pipe (21) is communicated with the first connecting hole (221); The first sealing plug (3) comprises a first cylindrical section (31) and a first conical section (32), wherein the first cylindrical section (31) is adapted to the first connecting hole (221), and the first conical section (32) is adapted to the first conical hole (222).

3. The solid sample fluorescence detection device according to claim 1, characterized in that: A second sealed channel (42) is provided in the air inlet pipe (2), the second sealed channel (42) comprises a second connecting hole (421) and a second tapered hole (422) connected to each other, the expanded end of the second tapered hole (422) is connected to the second connecting hole (421), the contracted end of the second tapered hole (422) is connected to the sample chamber (101), and the second branch pipe (41) is connected to the second connecting hole (421); The second sealing plug (5) comprises a second cylindrical section (51) and a second conical section (52), the second cylindrical section (51) is adapted to the second connecting hole (421), and the second conical section (52) is adapted to the second conical hole (422).

4. The solid sample fluorescence detection device according to claim 2, characterized in that: The first conical section (32) is provided with a first sealing ring (23).

5. The solid sample fluorescence detection device according to claim 3, characterized in that: The second conical section (52) is provided with a second sealing ring (43).

6. The solid sample fluorescence detection device according to claim 2, characterized in that: A first transition channel (24) is provided in the air inlet pipe (2), a first end of the first transition channel (24) is in communication with the first tapered hole (222), and a second end of the first transition channel (24) is in communication with the sample chamber (101).

7. The solid sample fluorescence detection device according to claim 3, characterized in that: A second transition channel (44) is provided in the air outlet pipe (4), a first end of the second transition channel (44) is in communication with the second conical hole (422), and a second end of the second transition channel (44) is in communication with the sample chamber (101).

8. The solid sample fluorescence detection device according to claim 1, characterized in that: The main body (1) comprises a shell (11) and a cover plate (12); the air inlet pipe (2) and the air outlet pipe (4) are both connected to the shell (11); a sample slot is provided at the first end of the shell (11); the cover plate (12) is connected to the first end of the main body (1) and is used to close the sample slot to form the sample chamber (101).

9. The solid sample fluorescence detection device according to claim 8, characterized in that: The first end of the housing (11) is provided with a mounting groove (102), and the mounting groove (102) is arranged around the opening of the sample slot and is used for mounting a sealing ring.

10. The solid sample fluorescence detection device according to claim 8, characterized in that: The cover plate (12) is provided with a mounting opening, the mounting opening corresponds to the sample slot, and a transparent window plate (103) is installed in the mounting opening.

Images