Anti-pollution rapid sampling device for fiber toxic matrix

Abstract

This invention relates to a rapid sampling device for preventing contamination of a fiber-based drug-carrying matrix, comprising a lower base, an upper base, and a sampling unit. The lower base includes a lower platform and a support frame below the lower platform. The lower platform has at least one through hole for connecting a sample tube. The upper base includes an upper platform and at least one vertical sampling cylinder. The drug-carrying matrix is ​​laid between the lower and upper platforms. The sampling cylinder is a hollow cylinder for accommodating the sampling unit. The bottom of the sampling cylinder corresponds to a sampling hole on the lower platform. After sampling, the sample falls directly into the sample tube. The sampling unit includes an outer support, a pressing handle, and a cutter. The outer support is detachably mounted on the top of the sampling cylinder, thereby sealing the sampling cylinder. The pressing handle passes through the center of the outer support. The top of the pressing handle is connected to the upper surface of the outer support via a spring. The bottom of the pressing handle is connected to the cutter. Pressing the handle can press the cutter into the sampling cylinder to cut the matrix at the sampling hole.

Description

Technical Field

[0001] This invention belongs to the field of drug detection technology, specifically relating to a rapid sampling device for preventing contamination of fibrous drug-concealing substrates. Background Technology

[0002] As my country intensifies its crackdown on drug smuggling, the forms of drug smuggling and concealment are becoming increasingly diverse and covert. In recent years, cases involving the use of fiber-based materials for drug smuggling and concealment have been on the rise. The modus operandi involves dissolving drugs in water, then soaking clothing, blankets, or other fiber-based materials in the solution. After draining and drying, the solidified drugs are embedded within the fiber pores of the material, making them difficult to identify visually. This allows these fibrous drug-carrying devices to easily evade police detection. Current detection methods for cases involving the use of clothing, blankets, cardboard, or other similar materials for drug trafficking require sampling the target material and adding specialized testing reagents to perform qualitative and quantitative analysis of the drugs within the sample, ensuring accurate sentencing.

[0003] However, the current sampling method still uses conventional scissors and utility knives to directly sample, which has the following disadvantages: (1) it is difficult to ensure the consistency of the sampling area; (2) when cutting samples such as clothing, blankets, and cardboard, the drug dust is very easy to float, which will cause pollution to the surrounding environment, harm the health of the sampling personnel, and affect the accuracy of the test, thus affecting the sentencing. Summary of the Invention

[0004] To address the aforementioned problems, the present invention provides a rapid sampling device for preventing contamination of a fiber-borne toxin matrix, comprising a lower base, an upper base, and a sampling unit. The lower base includes a lower platform and a support frame below the lower platform. The lower platform is provided with at least one through hole for connecting a sample tube.

[0005] The upper base includes an upper platform and at least one vertical sampling tube. The drug-containing matrix is ​​laid between the lower platform and the upper platform. The sampling tube is a hollow cylinder used to accommodate the sampling unit. The bottom of the sampling tube corresponds to a sampling hole on the lower platform. After the sampling unit takes a sample, the sample falls directly into the sample tube.

[0006] The sampling unit includes an outer support, a pressing handle, and a cutter. The outer support is detachably mounted on the top of the sampling tube, thereby sealing the sampling tube. The pressing handle passes through the center of the outer support, and the top of the pressing handle is connected to the upper surface of the outer support via a spring. The bottom of the pressing handle is connected to the cutter, and the pressing handle can press the cutter down to cut the matrix at the sampling hole.

[0007] Optionally, the support frame includes several support rods evenly arranged along the circumference of the lower platform, so that there is space below the lower platform to accommodate the sample tube.

[0008] Optionally, the sampling hole is circular, with its bottom protruding downwards from the lower surface of the lower platform. The inner or outer wall of the bottom of the sampling hole is provided with threads for connecting a sample tube.

[0009] Optionally, both the upper and lower platforms are horizontal plates with equal areas, and can overlap when stacked. The bottom of the sampling tube is fixedly connected to the upper platform, and the sampling tube and the upper platform are integrally formed.

[0010] Several threaded holes are opened at corresponding positions on the upper and lower platforms, that is, the threaded holes on the upper and lower platforms correspond one-to-one, and the inner wall of the hole is provided with internal thread.

[0011] Optionally, the outer support of the sampling unit is circular, and the bottom edge of the outer support is provided with a ring of downward protruding snap-fit ​​parts. The snap-fit ​​parts are circular solid, and the inner diameter of the snap-fit ​​parts is slightly larger than the outer diameter of the sampling tube, so that the outer support can be fastened to the top of the sampling tube through the snap-fit ​​parts.

[0012] A through hole is provided at the center of the outer support, allowing the pressing handle to pass through the outer support; the bottom of the spring is connected to the outside of the through hole to support the pressing handle and the cutter; the spring is concentric with the through hole and is vertically upward, located above the outer support.

[0013] Optionally, the pressing handle includes a pressing plate and a first connecting rod, the diameter of the pressing plate is larger than the diameter of the spring, and the top of the spring is connected to the lower surface of the pressing plate;

[0014] The top of the first connecting rod is connected to the center of the lower surface of the pressing plate. The first connecting rod passes through the through hole of the outer support. The bottom of the first connecting rod is connected to the top of the cutter through several connecting rods. The heads of several connecting rods are connected to the first connecting rod, and the tails are connected to the cutter. The several connecting rods radiate outward from the first connecting rod as the center.

[0015] Optionally, the cutter is a hollow cylinder with its central axis set vertically. The cutter, sampling cylinder, and pressing plate are all concentrically arranged, and the diameter of the cutter is slightly smaller than the inner diameter of the sampling cylinder.

[0016] The cutter is made up of several vertical first blades joined together along the circumference.

[0017] Further optionally, the bottom of the first blade is wedge-shaped with an inclined bottom edge, and the longest part of the bottom edge has a blade tip. The bottom edge of the first blade has a cutting edge, and the bottom edge and blade tip of the first blade perform a cutting function.

[0018] The two adjacent first blades are arranged such that the side of the first blade with the blade tip is close to the side of the shortest adjacent first blade, so that the blade tips at the bottom of the cutter are spaced apart and all blade tips are at the same horizontal height.

[0019] Following the above method, the diameter of the obtained sample is approximately equal to the diameter of the cutter, which may result in a large sample size, hindering subsequent thorough mixing with the detection reagent. This invention provides the following solution.

[0020] Optionally, the sampling unit further includes a secondary pressure plate, a second connecting rod, and several second blades. The secondary pressure plate is circular and is concentrically arranged with the pressing plate.

[0021] The first connecting rod is hollow and has a second connecting rod nested inside it; the top of the second connecting rod passes through the pressing plate and then connects to the center of the lower surface of the sub-pressing plate; the bottom of the second connecting rod extends out of the bottom of the first connecting rod, and the lower middle part of the second connecting rod connects to the second blade, which can rise and fall together with the cutter.

[0022] Further optionally, the bottom of the second connecting rod is slightly higher than the tip of the first blade, and several second blades are evenly arranged along the circumference of the second connecting rod;

[0023] The second blade has a fixed side and a free side on its two sides. The fixed side is connected to the second connecting rod, and the bottom of the fixed side is the tip of the second blade. The free side of the second blade points to the inner wall of the cutter. The bottom edge of the second blade is wedge-shaped and has a cutting edge, and the free side is the shorter side.

[0024] Optionally, the outer side of the pressing plate is provided with at least one horizontal crossbar that extends outward beyond the edge of the outer support. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the lower platform;

[0026] Figure 2 This is a diagram illustrating the process of accessing the platform;

[0027] Figure 3 This is a schematic diagram showing the fit between the outer support and the top of the sampling cylinder;

[0028] Figure 4 A diagram illustrating pressing the handle and the cutter;

[0029] Figure 5 This is a schematic diagram of the secondary pressure plate, the second connecting rod, and the second blade.

[0030] Figure 6 This is a schematic diagram showing the cooperation between the first connecting rod and the second connecting rod.

[0031] Among them, 1-lower platform, 2-upper platform, 3-support frame, 4-sampling hole, 5-sampling cylinder, 6-sample tube, 7-outer support, 8-second connecting rod, 9-cutting knife, 10-spring, 11-threaded hole, 12-clamping part, 13-pressing plate, 14-first connecting rod, 15-first blade, 16-second blade, 17-secondary pressure plate. Detailed Implementation

[0032] This embodiment provides a rapid sampling device for preventing contamination of fiber-based toxic substance substrates, such as... Figures 1-6 As shown, it includes a lower base, an upper base and a sampling unit. The lower base includes a lower platform 1 and a support frame 3 below the lower platform 1. The lower platform 1 is provided with at least one sampling hole 4 for connecting a sample tube 6.

[0033] The upper base includes an upper platform 2 and at least one vertical sampling cylinder 5. The drug-containing matrix is ​​laid between the lower platform 1 and the upper platform 2. The sampling cylinder 5 is a hollow cylinder used to accommodate the sampling unit. The bottom of the sampling cylinder 5 corresponds to a sampling hole 4 of the lower platform 1. After the sampling unit takes a sample, the sample falls directly into the sample tube 6.

[0034] The sampling unit includes an outer support 7, a pressing handle, and a cutter 9. The outer support 7 is detachably mounted on the top of the sampling cylinder 5, thereby sealing the sampling cylinder 5. The pressing handle passes through the center of the outer support 7, and the top of the pressing handle is connected to the upper surface of the outer support 7 through a spring 10. The bottom of the pressing handle is connected to the cutter 9, and the pressing handle can press the cutter 9 down to cut the matrix at the sampling hole 4.

[0035] Optionally, the support frame 3 includes several support rods, which are evenly arranged along the circumference of the lower platform 1, so that there is space below the lower platform 1 to accommodate the sample tube 6.

[0036] Optionally, the sampling hole 4 is circular, and the bottom of the sampling hole 4 protrudes downward from the lower surface of the lower platform 1. The inner or outer wall of the bottom of the sampling hole 4 is provided with threads for connecting the sample tube 6.

[0037] Optionally, both the upper platform 2 and the lower platform 1 are horizontal plates with equal areas, and can overlap when stacked. The bottom of the sampling cylinder 5 is fixedly connected to the upper platform 2, and the sampling cylinder 5 and the upper platform 2 are integrally formed.

[0038] Several threaded holes 11 are opened at corresponding positions on the upper platform 2 and the lower platform 1, that is, the threaded holes 11 on the upper platform 2 and the lower platform 1 correspond one-to-one, and the inner wall of the hole is provided with internal thread.

[0039] Preferably, a plurality of threaded holes 11 on the upper platform 2 are evenly arranged around the outer periphery of the sampling cylinder 5 area, and a plurality of threaded holes 11 on the lower platform 1 are evenly arranged around the outer periphery of the sampling hole 4 area.

[0040] During sampling, the substrate to be tested is laid on the lower platform 1 and then pressed together with the upper platform 2. Several clips can be set at the outer edges of the two platforms to temporarily fix the two platforms and the substrate between them, in preparation for sampling by the cutter 9.

[0041] A bolt is passed through the threaded hole 11 of the upper platform 2 and then pressed against the substrate corresponding to the threaded hole 11 between the upper and lower platforms 1. The bolt is then pressed downwards, causing it to screw into the threaded hole 11 of the lower platform 1, with the substrate in between. If the substrate is thin, the bolt can lead the substrate into the threaded hole 11 of the lower platform 1; if the substrate is thick, the bottom part of the bolt, which encloses the substrate, will screw into the threaded hole 11 of the lower platform 1. The substrate is pushed into the threaded hole 11 of the lower platform 1 by the bolt, thereby pulling on other substrate portions around the threaded hole 11. With several threaded holes 11 evenly distributed around the sampling hole 4, and several bolts simultaneously pulling the substrate outwards, the substrate at the sampling hole 4 is flattened, preparing it for sampling by the cutter 9.

[0042] Optionally, the outer support 7 of the sampling unit is circular, and the bottom edge of the outer support 7 is provided with a ring of downward protruding snap-fit ​​parts 12. The snap-fit ​​parts 12 are circular solid, and the inner diameter of the snap-fit ​​parts 12 is slightly larger than the outer diameter of the sampling cylinder 5, so that the outer support 7 can be fastened to the top of the sampling cylinder 5 through the snap-fit ​​parts 12.

[0043] The outer support 7 has a through hole at its center, allowing the pressing handle to pass through the outer support 7; the bottom of the spring 10 is connected to the outside of the through hole to support the pressing handle and the cutter 9; the spring 10 is concentric with the through hole and is vertically upward, located above the outer support 7.

[0044] Optionally, the pressing handle includes a pressing plate 13 and a first connecting rod 14. The diameter of the pressing plate 13 is larger than the diameter of the spring 10, and the top of the spring 10 is connected to the lower surface of the pressing plate 13.

[0045] The top of the first connecting rod 14 is connected to the center of the lower surface of the pressing plate 13. The first connecting rod 14 passes through the through hole of the outer support 7. The bottom of the first connecting rod 14 is connected to the top of the cutter 9 through several connecting rods. The heads of several connecting rods are connected to the first connecting rod 14, and the tails are connected to the cutter 9. The several connecting rods radiate outward from the first connecting rod 14 as the center.

[0046] Optionally, the cutter 9 is a hollow cylinder with its central axis set vertically. The cutter 9, the sampling cylinder 5, and the pressing plate 13 are all concentrically arranged. The diameter of the cutter 9 is slightly smaller than the inner diameter of the sampling cylinder 5.

[0047] The cutter 9 is composed of several vertical first blades 15 spliced ​​together along the circumferential direction. The top of all the first blades 15 is detachably connected to a circular retaining ring to fix the overall shape of the cutter 9; the tail of the connecting rod is connected to the retaining ring.

[0048] Further optionally, the bottom of the first blade 15 is wedge-shaped with an inclined bottom edge, and the longest part of the bottom edge has a blade tip. The bottom edge of the first blade 15 has a cutting edge, and the bottom edge and blade tip of the first blade 15 perform a cutting function.

[0049] The two adjacent first blades 15 are arranged such that the side of the first blade 15 with the blade tip is close to the side of the shortest length of the adjacent first blade 15, so that the blade tips at the bottom of the cutter 9 are spaced apart and all blade tips are at the same horizontal height.

[0050] The outer support 7 is fastened to the top of the sampling cylinder 5, covering the top of the sampling cylinder 5, and the dust floating during matrix cutting is sealed inside the sampling cylinder 5. During sampling, the pressing plate 13 is pressed down, forcing the spring 10 to compress, and the pressing handle controls the cutter 9 to move down until several blade tips simultaneously reach the upper surface of the taut matrix on the sampling hole 4. As the pressing handle continues to be pressed, all blade tips simultaneously pierce the matrix, and then the pressing handle is rotated while continuing to press down, the blade tips rotate towards the shorter side of the same first blade 15, so that the bottom edge of the first blade 15 faces the matrix to cut. By rotating only the width of one first blade 15, several first blades 15 can be rotated synchronously and descend to cut the matrix in one circle, obtaining a nearly circular matrix sample, which is simple and quick.

[0051] The first blade 15 may or may not have a curvature in the transverse direction, keeping the first blade 15 straight.

[0052] After the matrix sample is cut, it automatically falls into the sample tube 6. Releasing the handle causes the cutter 9 to rise and retract into the sampling cylinder 5, while the spring 10 extends and returns to its original position. The sampling unit is then removed from the sampling cylinder 5 via the outer support 7. With the top of the sampling cylinder 5 open, the required reagents are dripped into the sample tube 6 through the sampling cylinder 5 and sampling hole 4, directly completing the sample pretreatment. The sample tube 6 is then unscrewed from the bottom of the sampling hole 4 for the next processing or testing step.

[0053] If multiple sampling tubes 5 and sampling holes 4 are set up, multiple parallel samplings can be performed on the same matrix with consistent sampling conditions and area size, which helps to improve the accuracy and reproducibility of the detection.

[0054] Optionally, the sampling unit further includes a secondary pressure plate 17, a second connecting rod 8, and several second blades 16. The secondary pressure plate 17 is circular and is concentrically arranged with the pressing plate 13.

[0055] The first connecting rod 14 is hollow and the second connecting rod 8 is nested inside it; the top of the second connecting rod 8 passes through the pressing plate 13 and then connects to the center of the lower surface of the auxiliary pressing plate 17; the bottom of the second connecting rod 8 passes through the bottom of the first connecting rod 14, and the lower middle part of the second connecting rod 8 is connected to the second blade 16, which can rise and fall together with the cutter 9.

[0056] Optionally, the diameter of the secondary pressure plate 17 is larger than the diameter of the first connecting rod 14, so that the secondary pressure plate 17 can always be above the pressing plate 13, and the height of the second blade 16 is limited by the secondary pressure plate 17 to prevent the second blade 16 from falling.

[0057] The upper surface of the secondary pressure plate 17 is provided with an upwardly protruding locking block for connecting the pressing head of the pressing device. The corresponding position on the lower surface of the pressing head is provided with an upwardly recessed locking groove for engaging the block, so that the pressing head can prevent the secondary pressure plate 17 from rotating while applying downward force.

[0058] Alternatively, the bottom of the second connecting rod 8 is slightly higher than the tip of the first blade 15, and a plurality of second blades 16 are evenly arranged along the circumference of the second connecting rod 8.

[0059] The second blade 16 has a fixed side and a free side on its two sides. The fixed side is connected to the second connecting rod 8, and the bottom of the fixed side is the tip of the second blade 16. The free side of the second blade 16 points to the inner wall of the cutter 9. The bottom edge of the second blade 16 is wedge-shaped and has a cutting edge, and the free side is the shorter side.

[0060] Further optionally, the tip of the second blade 16 extends to below the bottom of the second connecting rod 8, and the tips of all the second blades 16 converge at the center of the bottom of the second connecting rod 8. The tips of the second blades 16 are at the same height as the tips of the first blade 15, which facilitates simultaneous piercing of the matrix.

[0061] The first blade 15 has a curvature in the transverse direction, making the cross-section of the cutter 9 circular. The gap between the free side of the second blade 16 and the inner wall of the cutter 9 is extremely small and does not affect the rotation of the cutter 9.

[0062] The free side of the second blade 16 is not higher than the shorter side of the first blade 15, so that when the cutter 9 cuts the sample edge, the free side of the second blade 16 can definitely cut through the sample interior.

[0063] Optionally, the outer side of the pressing plate 13 is provided with at least one horizontal crossbar that extends outward beyond the edge of the outer support 7.

[0064] Using a conventional pressing device, the aforementioned pressing head is fitted onto the force-applying end, with its slot engaging with the connecting block. The pressing head simultaneously presses down on the secondary pressure plate 17 and the pressing plate 13 via the secondary pressure plate 17, causing the cutter 9 and the second blade 16 to descend simultaneously. When the tips of the first and second blades 16 simultaneously pierce the matrix, the crossbar drives the pressing plate 13 and the cutter 9 to rotate (i.e., the cutter 9 rotates to cut), while the secondary pressure plate 17 continues to press down. During this process, the second blade 16 does not rotate but only descends, using its bottom edge to gradually cut the sample radially until it is extremely close to the position of the first blade 15. Then, the pressing device rises to its reset position, the spring 10 extends to its reset position, and the secondary pressure plate 17 and the pressing plate 13 rise to their reset positions.

[0065] In this way, the cut sample is connected only at the edge, forming a circle, while the inside is divided into several pieces. This facilitates full contact between the chopped sample and the testing reagent, improving the accuracy of the test.

Claims

1. A rapid sampling device for preventing contamination of fiber-based toxic substance substrates, characterized in that, It includes a lower base, an upper base, and a sampling unit. The lower base includes a lower platform and a support frame below the lower platform. The lower platform is provided with at least one through hole for connecting a sample tube. The upper base includes an upper platform and at least one vertical sampling tube. The drug-containing matrix is ​​laid between the lower platform and the upper platform. The sampling tube is a hollow cylinder used to accommodate the sampling unit. The bottom of the sampling tube corresponds to a sampling hole on the lower platform. After the sampling unit takes a sample, the sample falls directly into the sample tube. The sampling unit includes an outer support, a pressing handle, and a cutter. The outer support is detachably mounted on the top of the sampling tube, thereby sealing the sampling tube. The pressing handle passes through the center of the outer support, and the top of the pressing handle is connected to the upper surface of the outer support via a spring. The bottom of the pressing handle is connected to the cutter, and the pressing handle can press the cutter down to cut the matrix at the sampling hole.

2. The rapid sampling device for preventing contamination of fiber-based toxic substance substrates according to claim 1, characterized in that, The support frame includes several support rods, which are evenly arranged along the circumference of the lower platform, so that there is space below the lower platform to accommodate the sample tube; The sampling hole is circular, with its bottom protruding downwards from the lower surface of the lower platform. The inner or outer wall of the bottom of the sampling hole is threaded for connecting the sample tube.

3. The rapid sampling device for preventing contamination of fiber-based toxic substance substrates according to claim 1, characterized in that, Both the upper and lower platforms are horizontal plates with equal areas, and can overlap when stacked. The bottom of the sampling tube is fixedly connected to the upper platform, and the sampling tube and the upper platform are integrally formed. Several threaded holes are opened at corresponding positions on the upper and lower platforms, and the threaded holes on the upper and lower platforms correspond one-to-one, with internal threads on the inner wall of the holes.

4. The rapid sampling device for preventing contamination of fiber-based toxic substance substrates according to claim 1, characterized in that, The outer support is circular, and the bottom edge of the outer support is provided with a ring of downward protruding snap-fit ​​parts. The snap-fit ​​parts are circular solid, and the inner diameter of the snap-fit ​​parts is slightly larger than the outer diameter of the sampling tube, so that the outer support can be fastened to the top of the sampling tube through the snap-fit ​​parts. A through hole is provided at the center of the outer support, allowing the pressing handle to pass through the outer support; the bottom of the spring is connected to the outside of the through hole to support the pressing handle and the cutter; the spring is concentric with the through hole and is vertically upward, located above the outer support.

5. The rapid sampling device for preventing contamination of fiber-based toxic substance substrates according to claim 4, characterized in that, The pressing handle includes a pressing plate and a first connecting rod. The diameter of the pressing plate is larger than the diameter of the spring, and the top of the spring is connected to the lower surface of the pressing plate. The top of the first connecting rod is connected to the center of the lower surface of the pressing plate. The first connecting rod passes through the through hole of the outer support. The bottom of the first connecting rod is connected to the top of the cutter through several connecting rods. The heads of several connecting rods are connected to the first connecting rod, and the tails are connected to the cutter. The several connecting rods radiate outward from the first connecting rod as the center.

6. The rapid sampling device for preventing contamination of fiber-based toxic substance substrates according to claim 4, characterized in that, The cutter is a hollow cylinder with its central axis set vertically. The cutter, sampling cylinder, and pressing plate are all concentrically set. The diameter of the cutter is slightly smaller than the inner diameter of the sampling cylinder. The cutter is made up of several vertical first blades spliced ​​together along the circumferential direction.

7. The rapid sampling device for preventing contamination of fiber-based toxic substance substrates according to claim 6, characterized in that, The bottom of the first blade is wedge-shaped with an inclined bottom edge. The longest part of the bottom edge has a blade tip. The bottom edge of the first blade has a cutting edge. The bottom edge and the blade tip of the first blade perform the cutting function. The two adjacent first blades are arranged such that the side of the first blade with the blade tip is close to the side of the shortest adjacent first blade, so that the blade tips at the bottom of the cutter are spaced apart and all blade tips are at the same horizontal height.

8. The rapid sampling device for preventing contamination of fiber-based toxic substance substrates according to claim 5, characterized in that, The sampling unit also includes a secondary pressure plate, a second connecting rod, and several second blades. The secondary pressure plate is circular and is concentrically arranged with the pressing plate. The first connecting rod is hollow and has a second connecting rod nested inside it; the top of the second connecting rod passes through the pressing plate and then connects to the center of the lower surface of the auxiliary pressing plate; The bottom of the second connecting rod extends through the bottom of the first connecting rod, and the lower middle part of the second connecting rod is connected to the second blade. The second blade can rise and fall together with the cutter.

9. The rapid sampling device for preventing contamination of fiber-based toxic substance substrates according to claim 8, characterized in that, Several second blades are evenly arranged along the circumference of the second connecting rod; The second blade has a fixed side and a free side on both sides. The fixed side is connected to the second connecting rod, and the bottom of the fixed side is the tip of the second blade. The free side of the second blade points towards the inner wall of the cutter. The bottom edge of the second blade is wedge-shaped and has a cutting edge, with the free side being the shorter side.

10. The rapid sampling device for preventing contamination of fiber-based toxic substance substrates according to claim 8, characterized in that, The outer side of the pressing plate is provided with at least one horizontal crossbar that extends outward beyond the edge of the outer support.

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