Sampling device for chemical analysis and detection

Abstract

The utility model discloses a sampling device for chemical analysis and detection, and particularly relates to the technical field of sampling devices, the sampling device comprises an air suction cylinder, a suction pipe is integrally formed at the bottom end of the air suction cylinder, a sealing cover is fixedly mounted at the top end of the air suction cylinder, a sample storage piece is arranged at the bottom end of the suction pipe, and a suction cup is arranged in the air suction cylinder. The outer side of the suction cup is fixedly sleeved with a piston sleeve, the outer wall of the piston sleeve makes contact with the inner wall of the air suction cylinder, and a suction rod is fixedly installed in the middle of the top end of the suction cup and penetrates through the middle of the sealing cover in a sliding mode. The sample storage piece comprises a sample storage barrel, a sampling tube is integrally formed at the bottom end of the sample storage barrel, a sleeve frame is integrally formed at the top end of the sample storage barrel, and a clamping frame is movably clamped in the sleeve frame. And the sample in the sample storage barrel is prevented from leaking.

Description

Technical Field

[0001] The utility model relates to the technical field of sampling devices, in particular to a sampling device for chemical analysis and detection. Background Art

[0002] Chemical analysis refers to the process of qualitative and quantitative analysis of substances through various methods and techniques. The main chemical analysis methods include: spectral analysis, chromatography, mass spectrometry, titration, electrochemical analysis, fluorescence analysis and chemiluminescence analysis. They are widely used in environmental monitoring, food safety, pharmaceuticals, materials science and other fields. When conducting chemical analysis, sample sampling, processing and storage conditions are very critical to ensure the accuracy and repeatability of the analysis results.

[0003] The existing sampling devices for chemical analysis and detection still have some problems when used: the traditional sampling method is mostly to use a rubber-tipped dropper to suck or use automatic suction to suck the sample, and then suck the sample into a buffer cylinder for buffering. When the sucked sample is discharged into the sample tube, the buffer cylinder needs to be cleaned when the next sampling is carried out, which is troublesome and the use effect is not ideal. Therefore, we propose a sampling device for chemical analysis and detection to solve the above problems. Utility Model Content

[0004] The purpose of the present utility model is to provide a sampling device for chemical analysis and detection, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a sampling device for chemical analysis and detection, comprising a vacuum pump, a suction tube integrally formed at the bottom end of the vacuum pump, a sealing cap fixedly mounted at the top end of the vacuum pump, a sample storage member provided at the bottom end of the suction tube, a suction cup provided in the vacuum pump, a piston sleeve fixedly mounted on the outer side of the suction cup, the outer wall of the piston sleeve in contact with the inner wall of the vacuum pump, a suction rod fixedly mounted at the middle portion of the top end of the suction cup, and the suction rod slidingly passing through the middle portion of the sealing cap;

[0006] The top of the tube has a lock hole, and the lock hole is fixed with a lock core, and the lock core has a lock hole, and the lock core has a lock hole, and the lock core has a lock hole.

[0007] Preferably, an observation window is fixedly installed on the outer side of the sample storage cylinder.

[0008] Preferably, an auxiliary convex is fixedly mounted on the top of the outer side of the sample storage cylinder, and a sleeve is provided on the outer movable sleeve of the auxiliary convex, and the sleeve is used in conjunction with the sampling tube.

[0009] Preferably, a positioning ring is provided on the inner bottom fixing card of the card frame, and the bottom end of the suction tube contacts the upper surface of the positioning ring.

[0010] Preferably, a top plate is fixedly provided on the top of the inner wall of the vacuum cylinder, and the suction rod slides through the middle of the top plate; a rotating frame is fixedly installed on the top of the top plate, and a driving gear is rotatably installed on the top of the rotating frame, and a driven rack corresponding to the driving gear is fixedly provided on the outer side of the suction rod, and the driving gear and the driven rack are meshed and connected; a driving motor is fixedly installed on the side of the top of the top plate close to the rotating frame, and the driving end of the driving motor and the shaft end of the driving gear are fixedly installed.

[0011] Preferably, an anti-slip sleeve is fixedly installed on the outer side of the vacuum cylinder.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. By setting up the sample storage part, direct sampling and storage of samples can be achieved, and the samples in the sample storage cylinder can be sealed to prevent leakage of the samples in the sample storage cylinder.

[0014] 2. By setting up the sample storage piece, you can directly install a new sample storage piece to sample the next sample without cleaning, which is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a schematic structural diagram of the utility model.

[0017] Figure 2 This is a schematic diagram of the structural connection of the utility model after disassembly.

[0018] Figure 3 For this utility model Figure 2 Enlarged view of point A in the middle.

[0019] Figure 4 For this utility model Figure 2 Enlarged view of point B in the middle.

[0020] Figure 5 It is a structural schematic diagram of the sample storage part in this utility model.

[0021] Figure 6 For this utility model Figure 5 Enlarged view of point C in the middle.

[0022] In the figure: 1. Vacuum cylinder; 2. Sample storage part; 3. Suction cup; 31. Piston sleeve; 32. Suction rod; 4. Top plate; 5. Rotating frame; 51. Driving gear; 52. Driven rack; 53. Driving motor; 11. Suction tube; 12. Sealing cover; 13. Connecting sleeve; 14. Anti-slip sleeve; 21. Sample storage cylinder; 211. Sampling tube; 22. Sleeve frame; 221. First through groove; 23. Clamping frame; 231. Second through groove; 232. Positioning ring; 24. Rotating ring; 25. Limiting rod; 251. Arc-shaped limiting groove; 252. Limiting nut; 26. Observation window; 27. Auxiliary protrusion; 271. Sealing sleeve. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Example: Figure 1-6As shown, the utility model provides a sampling device for chemical analysis and detection, including a vacuum cylinder 1, an anti-slip sleeve 14 is fixedly installed on the outside of the vacuum cylinder 1; a suction tube 11 is integrally formed at the bottom end of the vacuum cylinder 1, a sealing cover 12 is fixedly installed at the top end of the vacuum cylinder 1, a sample storage part 2 is provided at the bottom end of the suction tube 11, a suction cup 3 is provided in the vacuum cylinder 1, a piston sleeve 31 is fixedly sleeved on the outside of the suction cup 3, the outer wall of the piston sleeve 31 contacts the inner wall of the vacuum cylinder 1, a suction rod 32 is fixedly installed at the middle part of the top end of the suction cup 3, the suction rod 32 slides through the middle part of the sealing cover 12, and the suction rod 32 is controlled to rise to drive the suction cup 3 and the piston sleeve 31 to rise;

[0025] The sample storage part 2 includes a sample storage cylinder 21, the bottom end of the sample storage cylinder 21 is integrally formed with a sampling tube 211, the top end of the sample storage cylinder 21 is integrally formed with a sleeve frame 22, a movable card is provided with a card frame 23 in the sleeve frame 22, the lower surface of the card frame 23 is in contact with the lower surface of the inner wall of the sleeve frame 22, and a rotating ring 24 is integrally formed on the top of the card frame 23. A limiting rod 25 is fixedly installed on the top of the sleeve frame 22, and an arc-shaped limiting groove 251 corresponding to the limiting rod 25 is opened on the rotating ring 24. The limiting rod 25 is movably clamped in the arc-shaped limiting groove 251, and a limiting nut 252 is threadedly installed on the top of the limiting rod 25. The lower surface of the limiting nut 252 is in contact with the lower surface of the rotating ring 24, so that the card frame 23 is easy to rotate in the sleeve frame 22, driving the limiting rod 25 to slide in the arc-shaped limiting groove 251;

[0026] A first through groove 221 is provided at the bottom end of the sleeve frame 22, and a second through groove 231 corresponding to the first through groove 221 is provided at the bottom end of the clamping frame 23. The bottom of the suction tube 11 is movably clamped in the clamping frame 23, and the bottom fixed sleeve of the suction tube 11 is provided with a connecting sleeve 13. The outer wall of the connecting sleeve 13 is in contact with the inner wall of the clamping frame 23, so that the suction tube 11 and the sample storage part 2 are detachably installed.

[0027] An observation window 26 is fixedly installed on the outer side of the sample storage cylinder 21 , and the volume of the sample in the sample storage cylinder 21 can be observed through the observation window 26 .

[0028] An auxiliary protrusion 27 is fixedly installed on the outer top of the sample storage cylinder 21, and a sleeve 271 is provided on the outer movable sleeve of the auxiliary protrusion 27. The sleeve 271 and the sampling tube 211 are used together to facilitate the removal of the sleeve 271 from the auxiliary protrusion 27 and the sleeve 271 is put on the sampling tube 211 for sealing.

[0029] A positioning ring 232 is fixedly provided on the inner bottom of the card frame 23 , and the bottom end of the suction tube 11 contacts the upper surface of the positioning ring 232 .

[0030] A top plate 4 is fixed on the top of the inner wall of the vacuum cylinder 1, and the suction rod 32 slides through the middle of the top plate 4; a rotating frame 5 is fixedly installed on the top of the top plate 4, and a driving gear 51 is rotatably installed on the top of the rotating frame 5. A driven rack 52 corresponding to the driving gear 51 is fixed on the outer side of the suction rod 32, and the driving gear 51 and the driven rack 52 are meshed and connected; a driving motor 53 is fixedly installed on the side of the top of the top plate 4 close to the rotating frame 5, and the driving end of the driving motor 53 and the shaft end of the driving gear 51 are fixedly installed. When in use, the driving motor 53 is controlled to turn on the driving gear 51 to drive the driven rack 52 to rise, thereby driving the suction rod 32 to rise.

[0031] Working principle: When in use, take out a new sample storage member 2, movably snap the bottom of the suction tube 11 into the snap frame 23, so that the outer wall of the connecting sleeve 13 contacts the inner wall of the snap frame 23, and the bottom end of the suction tube 11 contacts the upper surface of the positioning ring 232, and the suction tube 11 and the sample storage member 2 are detachably installed. Then, the snap frame 23 is rotated. The snap frame 23 rotates in the sleeve frame 22, driving the limiting rod 25 to slide in the arc-shaped limiting groove 251, so that the first through groove 221 and the second through groove 231 are connected to each other;

[0032] Subsequently, the sampling tube 211 is inserted into the sample, and the driving motor 53 is controlled to start and drive the driving gear 51 to drive the driven rack 52 to rise, thereby driving the suction rod 32 to rise, driving the suction cup 3 and the piston sleeve 31 to rise, and the sample is directly drawn into the sample storage cylinder 21 through the sampling tube 211 for buffering, and the sample does not enter the vacuum cylinder 1. After the sample is taken out, the seal 271 is removed from the auxiliary protrusion 27, and the seal 271 is put on the sampling tube 211 to seal it, and the clamping frame 23 is rotated to misalign the first through groove 221 and the second through groove 231, thereby sealing the sample in the sample storage cylinder 21 to prevent the sample in the sample storage cylinder 21 from leaking;

[0033] Afterwards, the entire sample storage unit 2 is removed and placed on a shelf to achieve direct sampling and storage of samples, and a new sample storage unit 2 can be directly installed to sample the next sample without the need for cleaning, which is simple and convenient.

[0034] When it is necessary to lay out the sample, the cover 271 is removed, and the clamping frame 23 is rotated to connect the first through groove 221 and the second through groove 231 to discharge the sample in the sample storage cylinder 21 .

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sampling device for chemical analysis and detection, comprising a vacuum pump (1), characterized in that: The bottom end of the vacuum cylinder (1) is integrally formed with a suction tube (11), the top end of the vacuum cylinder (1) is fixedly mounted with a sealing cover (12), the bottom end of the suction tube (11) is provided with a sample storage part (2), a suction cup (3) is provided in the vacuum cylinder (1), the outer fixed sleeve of the suction cup (3) is provided with a piston sleeve (31), the outer wall of the piston sleeve (31) is in contact with the inner wall of the vacuum cylinder (1), a suction rod (32) is fixedly mounted at the middle of the top end of the suction cup (3), and the suction rod (32) slides through the middle of the sealing cover (12); The sample storage member (2) includes a sample storage cylinder (21), the bottom end of the sample storage cylinder (21) is integrally formed with a sampling tube (211), the top end of the sample storage cylinder (21) is integrally formed with a sleeve frame (22), a movable card in the sleeve frame (22) is provided with a card frame (23), the lower surface of the card frame (23) is in contact with the lower surface of the inner wall of the sleeve frame (22), the top of the card frame (23) is integrally formed with a rotating ring (24), the top end of the sleeve frame (22) is fixedly installed with a limiting rod (25), the rotating ring (24) is provided with an arc-shaped limiting groove (251) corresponding to the limiting rod (25), and the limiting rod (25) is provided. The limiting rod (25) is movably engaged in the arc-shaped limiting groove (251), the limiting nut (252) is threadedly installed on the top of the limiting rod (25), the lower surface of the limiting nut (252) contacts the lower surface of the rotating ring (24), the bottom end of the sleeve (22) is provided with a first through groove (221), the bottom end of the clamping frame (23) is provided with a second through groove (231) corresponding to the first through groove (221), the bottom of the suction pipe (11) is movably engaged in the clamping frame (23), the bottom of the suction pipe (11) is fixedly provided with a connecting sleeve (13), the outer wall of the connecting sleeve (13) contacts the inner wall of the clamping frame (23).

2. A sampling device for chemical analysis and detection according to claim 1, characterized in that: An observation window (26) is fixedly mounted on the outer side of the sample storage cylinder (21).

3. A sampling device for chemical analysis and detection according to claim 1, characterized in that: An auxiliary protrusion (27) is fixedly mounted on the top of the outer side of the sample storage cylinder (21), and a sleeve (271) is provided on the outer side of the auxiliary protrusion (27). The sleeve (271) is used in conjunction with the sampling tube (211).

4. A sampling device for chemical analysis and detection according to claim 1, characterized in that: A positioning ring (232) is fixedly provided on the inner bottom of the card frame (23), and the bottom end of the suction tube (11) contacts the upper surface of the positioning ring (232).

5. A sampling device for chemical analysis and detection according to claim 1, characterized in that: A top plate (4) is fixedly clamped on the top of the inner wall of the vacuum cylinder (1), and the suction rod (32) slides through the middle of the top plate (4).

6. A sampling device for chemical analysis and detection according to claim 5, characterized in that: A rotating frame (5) is fixedly mounted on the top of the top plate (4), a driving gear (51) is rotatably mounted on the top of the rotating frame (5), a driven rack (52) corresponding to the driving gear (51) is fixedly mounted on the outer side of the suction rod (32), and the driving gear (51) and the driven rack (52) are meshed and connected.

7. A sampling device for chemical analysis and detection according to claim 6, characterized in that: A driving motor (53) is fixedly mounted on one side of the top of the top plate (4) close to the rotating frame (5), and the driving end of the driving motor (53) and the shaft end of the driving gear (51) are fixedly mounted.

8. A sampling device for chemical analysis and detection according to claim 1, characterized in that: An anti-slip sleeve (14) is fixedly mounted on the outer side of the vacuum cylinder (1).

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