Sampling tube

Abstract

The utility model discloses a sampling tube which comprises a tube body, a tube cover and a sampling rod, the sampling rod extends out of the tube body to the outer side of the tube cover, a hollow cavity is arranged in the sampling rod, and a sampling part with a spiral structure is arranged at the bottom end of the sampling rod; a shielding assembly is arranged on the sampling rod and comprises a fixing plate coaxially arranged on the side wall of the sampling rod, the outer diameter of the fixing plate is smaller than the inner diameter of the pipe body, and a plurality of blocking pieces which are adjacent to one another and can be connected in an upward overturning mode are arranged on the periphery of the fixing plate in a surrounding mode. The multiple blocking pieces are in a sector shape with the narrow inside and the wide outside and are distributed in a radial shape with the fixing plate as the center, and the fixing plate is further provided with a supporting plate used for preventing the blocking pieces from turning over and drooping to the position below the fixing plate. The visual line of a sample can be blurred during sampling, so that a detector does not need to directly look at the shape of the sample, judgment on the position of the sample is not affected, the acquisition process is not affected, the discomfort of the detector is reduced, the detection burden is relieved, and the method has a very good application value in rapid product detection.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of medical detection appliance especially relates to a sampling pipe for collecting excrement. BACKGROUND

[0002] In bacterial and viral infection detection, excrement is commonly used as a detection sample. As human waste, excrement is used as a detection sample for bacterial and viral indicators, and has the advantages of little damage to the human body and convenient sampling. For example, detection of hepatitis A virus.

[0003] Because the composition of excrement samples is complex, individual differences are large, and the content of the detected substance is low, a small amount of sample is generally collected from the original excrement using a sampling rod before testing, the sampling rod is then inserted into a sampling bottle, and the sampling rod is mixed with the treatment liquid in the sampling bottle. A certain amount of mixed liquid is then taken for detection. For example, as shown in US5543115A, the lower part of the sampling rod is formed with a long groove, and when the sampling rod is inserted into the excrement sample, the sample adheres to the groove to complete the collection.

[0004] The current conventional excrement sampling process is to use a sampling rod to sample different parts of the excrement, which requires close contact with the excrement and has a certain impact on the vision of the detection personnel, which can easily cause discomfort and reduce the enthusiasm of detection, which is not conducive to the popularization and application of the product. UTILITY MODEL CONTENT

[0005] To solve the above technical problems, the utility model provides a sampling pipe, which can obscure the line of sight of the sample during sampling, so that the detection personnel do not need to directly observe the sample form, and the judgment of the sample position is not affected, the collection process is not affected, the discomfort of the detection personnel is reduced, and the detection burden is reduced.

[0006] The sampling pipe comprises a pipe body, a pipe cover and a sampling rod, the sampling rod extends from the inside of the pipe body to the outside of the pipe cover, the inside of the sampling rod is provided with a hollow chamber, and the bottom end of the sampling rod is provided with a spiral sampling part; a shielding assembly is arranged on the sampling rod, the shielding assembly comprises a fixed plate coaxially arranged on the side wall of the sampling rod, the outer diameter of the fixed plate is smaller than the inner diameter of the pipe body, a plurality of adjacent and upwardly reversible connecting flaps are arranged around the outer periphery of the fixed plate, the plurality of flaps are fan-shaped with narrow inside and wide outside and are distributed in a radial manner with the fixed plate as the center, and a supporting plate is further arranged on the fixed plate to block the flaps from falling below the fixed plate.

[0007] A further technical solution is that the plurality of flaps are arranged in alignment, and the gap between adjacent flaps is less than 0.3 mm.

[0008] Further technical solutions are: the plurality of baffle pieces are arranged in two rows in sequence and are spaced apart upward and downward, and side portions of adjacent two baffle pieces are stacked upward and downward to form a complete disc-shaped visual barrier.

[0009] Further technical solutions are: the cross-sectional shape of the fixed plate is set as a circular inner ring and a regular polygon outer ring; and the cross-sectional shape of the plurality of baffle pieces is set as a regular polygon inner ring matched with the outer ring of the fixed plate and a circular outer ring.

[0010] Further technical solutions are: the number of side lengths of the regular polygon is 6-12.

[0011] Further technical solutions are: each outer side surface of the fixed plate is provided with a concave rotating groove, one end of the baffle piece close to the fixed plate is provided with a linkage plate matched with the rotating groove, the linkage plate extends into the rotating groove and is rotatably connected with the rotating groove through a rotating shaft; one end of the supporting plate is fixedly connected to the bottom of the rotating groove, and the other end extends horizontally below the linkage plate.

[0012] Further technical solutions are: a plurality of liquid inlet holes communicated with the cavity are arranged on one end of the side wall of the sampling rod close to the pipe cover.

[0013] Further technical solutions are: a plurality of stirring plates are symmetrically arranged at the bottom of the fixed plate with the center of the circle as the center.

[0014] Further technical solutions are: the fixed plate and the baffle piece are set as translucent.

[0015] Further technical solutions are: the fixed plate and the linkage plate are made of hard plastic, and the baffle piece is made of soft plastic.

[0016] The application has the beneficial effects that: the sampling rod is provided with a shielding assembly, the shielding assembly comprises a fixed plate and a plurality of baffle pieces arranged around the fixed plate, when the fecal sample needs to be collected, the sampling rod is taken out from the pipe body, the baffle pieces on the fixed plate lose the resistance and are turned to the horizontal state under the action of gravity, the plurality of adjacent baffle pieces are distributed in a radial manner around the outer periphery of the fixed plate of the sampling rod to form a shielding, the visual line of the sample can be blurred during sampling, the sample form is avoided from being directly viewed by the detection personnel, the judgment of the sample position is not affected, the collection process is ensured not to be affected, the discomfort of the detection personnel is reduced, and the detection burden is reduced. The requirement of the rapid detection product on the sample collection can be better met. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a split schematic view of the sampling pipe of the utility model.

[0018] Figure 2 is a schematic view when the sample is collected by using the sampling rod.

[0019] Figure 3 is a side view of the sampling stick when collecting the sample.

[0020] Figure 4 is Figure 3 is an enlarged view of A in FIG. 4.

[0021] Figure 5 is a schematic view of the mixing of the sampling tube after the sampling stick is inserted into the tube.

[0022] Figure 6 is a schematic view of the dripping of the sample solution after the sampling tube is inverted.

[0023] Figure 7 is a schematic view of the blocking assembly in one embodiment.

[0024] Figure 8 is a schematic view of the distribution of the blocking pieces in one embodiment.

[0025] Figure 9 is a schematic view of the distribution of the blocking pieces in another embodiment.

[0026] Figure 10 is a schematic view of the connection between the blocking piece and the fixed plate when the sampling stick is sampling.

[0027] Figure 11 is a schematic view of the connection between the blocking piece and the fixed plate when the sampling stick is inserted into the tube.

[0028] Figure 12 is a schematic view of the disassembly of the connection between the blocking piece and the fixed plate.

[0029] Figure 13 is a schematic view of the structure of the HAV antigen detection test strip.

[0030] Figure 14 is a schematic view of the use of the sampling device to detect the sample.

[0031] Reference signs:

[0032] 100, sampling tube, 1, tube, 2, tube cover, 3, sampling stick, 31, chamber, 32, liquid inlet hole, 4, blocking assembly, 41, fixed plate, 42, blocking piece, 43, rotating groove, 44, connecting plate, 45, rotating shaft, 46, supporting plate, 5, stirring plate, 200, test strip, 201, sample pad, 202, marker pad, 203, detection pad, 204, water absorption pad, 205, bottom card, 300, kit, 400, treatment liquid, 500, sample. DETAILED DESCRIPTION

[0033] As Figures 1-6The sampling tube 100 shown includes a tube body 1, a tube cover 2 arranged on the top of the tube body 1, and a sampling rod 3 inserted into the tube body 1. Specifically, the tube body 1 is arranged in a cylindrical shape. The top of the tube body 1 is provided with an opening, and the side wall of the opening is provided with threads and is screwed with the tube cover 2. The sampling rod 3 is fixedly connected with the tube cover 2, and the top end of the sampling rod 3 extends out of the tube cover 2 from the tube body 1. The sampling rod 3 is internally provided with a hollow cavity 31 along the axial direction thereof, and the cavity 31 is vertically through and serves as a channel for the sample liquid to flow out.

[0034] The sampling rod 3 is provided with a shielding assembly 4, which includes a fixed plate 41 coaxially arranged on the side wall of the sampling rod 3. The outer diameter of the fixed plate 41 is smaller than the inner diameter of the tube body 1. A plurality of adjacent and upwardly flipable flaps 42 are arranged around the outer periphery of the fixed plate 41. The flaps 42 are fan-shaped with a narrow inner part and a wide outer part, and are distributed in a radial manner with the fixed plate as the center. The outer periphery of the fixed plate 41 is further provided with a supporting plate 46 for blocking the flaps 42 from flipping below the fixed plate 41. When the flaps are flipped upward, the adjacent flaps are folded with each other to facilitate the insertion of the sampling rod into the tube body. When the sampling rod is taken out of the tube body, the plurality of flaps are automatically flipped downward and unfolded to form a disc substantially in the same plane as the fixed plate under the action of gravity. When viewed along the axial direction of the sampling rod from the tube cover, the unfolded shielding assembly forms a disc-shaped barrier that blocks the line of sight.

[0035] In one embodiment, as shown in the drawings, the plurality of flaps are arranged in a flush manner, such that the plurality of flaps are arranged side by side with shoulders. The gap between the adjacent flaps is less than 0.3 mm. When the flaps 42 are flipped downward, all the flaps 42 are unfolded to be substantially in the same plane as the fixed plate 41 (rather than drooping), thereby forming a disc-shaped shielding for the fecal sample during sampling. When the flaps 42 are flipped upward, the flaps are staggered and folded upward, so that the adjacent flaps are folded and stored in the tube body. Figure 2 In another embodiment, as shown in the drawings, the plurality of flaps 42 are arranged in two rows in sequence and vertically spaced. The side edges of the adjacent two flaps 42 are stacked vertically, thereby forming a complete disc-shaped visual barrier. It is believed that in the embodiment shown in the drawings, all the flaps 42 are unfolded to be substantially in the same plane as the fixed plate 41. The orthographic projection of all the flaps unfolded around the fixed plate forms a complete disc, so that the shielding ability of the flaps 42 is stronger. When the sampling rod 3 is received into the tube body 1, the adjacent two flaps 42 are staggered and folded upward, so that the adjacent flaps 42 are folded and stored.

[0036] Figure 7 Specifically, in one scheme, the fixed plate 41 is integrally formed with the sampling rod 3. In another scheme, the fixed plate 41 is separately manufactured and then assembled to the sampling rod 3. Figure 7

[0037] Specifically, in one scheme, the fixed plate 41 is integrally formed with the sampling rod 3. In another scheme, the fixed plate 41 is separately manufactured and then assembled to the sampling rod 3. ​​

[0038] The cross-sectional shape of the fixing plate 41 is configured such that the inner circle is circular and the outer circle is a regular polygon. Preferably, the number of sides of the regular polygon in the outer circle of the cross-section of the fixing plate 41 is 6 to 12, which facilitates the folding and storage of the baffle 42 when it is flipped. In one embodiment, as shown... Figure 8 As shown, the cross-sectional shape of the fixing plate 41 is configured such that the inner circle is a circle and the outer circle is a regular dodecagon. In another embodiment, as... Figure 9 As shown, the cross-sectional shape of the fixing plate 41 is set with the inner circle as the center and the outer circle as a regular octagon. The cross-sectional shape formed by the multiple baffles 42 is set with the inner circle being a regular polygon that matches the outer circle of the fixing plate 41, and the outer circle being a circle. By setting the inner circle to a regular polygon to match the outer circle of the fixing plate 41, the flipping of each baffle 42 can be achieved. By setting the outer circle to a circle, the covering area can be maximized.

[0039] In one embodiment, the baffle 42 and the fixed plate 41 are rotatably connected via a hinge. A support plate 46 is provided below each baffle 42, one end of which is fixedly connected to the outer peripheral sidewall of the fixed plate 41, and the other end extends horizontally below the baffle 42. The sum of twice the extension length of the support plate 46 and the outer diameter of the fixed plate 41 is less than the inner diameter of the tube body 1. This ensures that when the baffle 42 is flipped upwards, adjacent baffles 42 fold over each other; when the baffle 42 is flipped downwards, the support plate 46 supports the baffle 42 and keeps it approximately or nearly horizontal.

[0040] In another implementation scheme, such as Figures 10-12 As shown, each outer surface of the fixed plate 41 is provided with a recessed rotating groove 43. A connecting plate 44, adapted to the rotating groove 43, is provided at one end of the baffle 42 near the fixed plate 41. The connecting plate 44 extends into the rotating groove 43 and is rotatably connected to it via a rotating shaft 45. The rotating groove 43 is vertically continuous, and rotating shafts 45, adapted to the two sides of the connecting plate 44, are provided on the two side walls of the rotating groove 43. One end of the support plate 46 is fixedly connected to the bottom of the rotating groove 43, and the other end extends horizontally below the connecting plate 44, supporting the baffle 42 and the connecting plate 44, thereby preventing the baffle 42 from further rotating below the fixed plate 41, ensuring that each baffle 42 is in or nearly horizontal.

[0041] like Figure 4 As shown, the sampling rod 3 has multiple inlet holes 32 connected to the chamber 31 at one end of its side wall near the tube cap 2. By providing inlet holes 32, when the tube body 1 is flipped, the sample liquid in the tube body 1 can also flow from the inlet holes 32 near the tube cap 2 to the chamber 31, which can accelerate the flow rate of the sample liquid.

[0042] like Figure 3As shown, in one embodiment, the bottom of the fixed plate 41 is centrally symmetrically provided with a plurality of stirring plates 5, which can rapidly mix the fecal sample 500 and the treatment liquid 400 when the sampling rod 3 is rotated.

[0043] The tube body 1, the tube cover 2 and the sampling rod 3 of the sampling tube 100 are all made of polyethylene material. The tube body 1 is transparent or translucent, facilitating the observation of the internal condition of the tube body 1. In order to facilitate the smooth flow of the sample liquid in the tube body 1, a part of the tube body 1 is provided with elasticity, so that the tube body 1 can be squeezed, the tube body 1 deforms, and the sample liquid in the tube body 1 is prompted to flow to the chamber 31 of the sampling rod 3 and flow out from the drip head.

[0044] The fixed plate 41 and the baffle 42 are provided to be translucent. When sampling, the detection personnel can obscure the line of sight for the fecal sample 500, avoiding direct close observation, and at the same time, the line of sight is not completely blocked, affecting the judgment of the position of the sample 500. In another embodiment, the fixed plate 41 and the baffle 42 can also be made of opaque material, and the detection personnel can perceive the sampling situation according to the tactile sensation during sampling, while completely not seeing the fecal sample, solving the discomfort during sampling.

[0045] The fixed plate 41 and the linkage plate 44 are made of hard plastic to ensure stability during rotation. In order to ensure that the baffle 42 can be completely accommodated in the tube body 1 when it is turned over, the baffle 42 is made of soft plastic or rubber with elasticity and flexibility, or it can be a part of hard skeleton and a part of flexible hydrophobic wax paper, waterproof cloth and other materials. Preferably, the diameter of the shielding assembly 4 after unfolding is at least 2-4 times the outer diameter of the tube body 1, so as to increase the shielding area as much as possible, and also enable the shielding assembly to be inserted into the tube body after being folded.

[0046] In order to enable the sampling rod 3 to absorb sufficient sample at one time, the surface of the bottom of the sampling rod 3 is provided with an uneven or irregular surface to enhance the adhesion to the sample 500, so that the sample 500 is not easy to fall off during the taking process. Specifically, the bottom end of the sampling rod 3 is provided with a sampling part in a spiral structure, and the sampling part has a plurality of spiral grooves, which can obtain more fecal samples, avoid multiple operations of the sampler, reduce discomfort, and not easy to fall off during taking, reducing pollution. In another embodiment, the sampling part at the bottom end of the sampling rod 3 is provided with a spoon structure.

[0047] When sampling, the tube cover 2 is rotated and the sampling rod 3 is taken out through the tube cover 2, as shown in FIG. 4. Figure 2As shown, the baffle 42 on the sampling rod 3 loses the constraint of the sidewall of the tube body 1 and flips down and remains horizontal under the support of the supporting plate 46, so that the baffle 42 is distributed radially outside the fixed plate 41. The tester controls the bottom of the sampling rod 3 to collect the fecal sample 500, at this time, the plurality of baffles 42 on the sampling rod 3 can obscure the line of sight of the tester to the sample 500 above the sample 500, but will not affect the tester's judgment of the position of the sample 500, avoiding the tester directly looking at the sample 500 and reducing the discomfort of the tester. After collection is completed, the fixed plate 41 on the sampling rod 3 is aligned with the top opening of the tube body 1 and is inserted inward at this time, the baffle 42 on the fixed plate 41 is extruded upward by the wall of the tube body 1, and the baffle 42 on the fixed plate 41 is extruded upward by the wall of the tube body 1, as shown. Figure 5 As shown, since the baffle 42 is made of soft plastic and has elasticity and toughness, it can be folded and extruded into space and stored in the tube body 1. Tighten the tube cover 2 and shake the tube body to fully mix the treatment liquid 400 in the tube body with the sample 500 on the sampling rod 3. In the scheme in which the stirring plate 5 is arranged at the bottom of the fixed plate 41, the tube cover 2 is rotated back and forth to drive the stirring plate to rotate repeatedly, and the stirring plate stirs the liquid sample, thereby accelerating the speed of dissolving the fecal sample 500 into the treatment liquid to obtain the required sample solution (i.e. the liquid to be detected). As shown. Figure 6 As shown, the tube body is inverted, and the sample solution flows out from the opening of the sampling rod 3 close to the tube cover 2.

[0048] The sample detection method of the sampling tube of the present application:

[0049] (1) Detection material

[0050] Detection sample: human fecal sample

[0051] Verification product: hepatitis A antigen test strip 200

[0052] (1) Test strip components:

[0053] Quality control area (C): sheep anti-mouse IgG polyclonal antibody

[0054] Test area (T): HAV antibody-1

[0055] Marker pad: HAV antibody-2

[0056] Sample treatment liquid: sodium chloride (0.09%) + EDTA (0.5%)

[0057] (2) Preparation of test strip 20:

[0058] The test strip 20 includes a sample pad 201, a marker pad 202, a detection pad 203, a water absorption pad 204, and a bottom card 205. The water absorption pad 204 is made of water absorption paper.

[0059] Preparation of Test Pad 203. Test pad 203 uses a nitrocellulose membrane (NC membrane) as a carrier. The NC membrane has two lines: a test line (T line) and a control line (C line). The test line (T line) is immobilized with HAV antibody-1 at a concentration of 1.0 mg / ml, diluted with PB buffer at a pH of 7.0–8.0. The control line (C line) is immobilized with goat anti-mouse IgG polyclonal antibody at a concentration of 0.5 mg / ml, diluted with PB buffer at a pH of 7.0–8.0. The T line and C line are immobilized on the NC membrane using a membrane application machine. After processing, the test pad is dried in a 37°C oven.

[0060] Preparation of Labeled Pad 202: Labeled pad 202 uses glass fiber as a carrier. The labeling solution is applied to the glass fiber using a spray gun. The labeling solution is obtained by covalently coupling HAV antibody-2 with latex microspheres, with a concentration of 0.2%. The dilution buffer is 0.05M Tris + 0.5% BSA. After spray gun processing, the labeled pad is dried in a 37℃ oven.

[0061] Sample pad 201 preparation. Sample pad 201 uses glass fiber as a carrier. The sample pad treatment solution is sprayed onto the glass fiber. The sample pad treatment solution is: 0.05M Tris + 0.5% Tween-20 + 0.5% BSA + 0.2% Proclin 300. The treated sample pad is then dried in a 37℃ oven.

[0062] Assembly of test strip 20. Assemble the prepared components according to the standard test strip assembly procedure. Figure 13 Assemble in the sequence shown. First, assemble the detection pad 203. One end of the absorbent pad 204 covers the downstream end of the detection pad 203. The downstream end of the marking pad 202 covers the upstream end of the detection pad 203. The downstream end of the sample pad 201 covers the upstream end of the marking pad 202. The assembled sample pad 201, marking pad 202, detection pad 203, and absorbent pad 204 are all fixed on the base plate 205.

[0063] (3) Test strip principle

[0064] The qualitative detection of HAV antigen in fecal sample is carried out by using highly specific antigen-antibody reaction and immunochromatographic technique. The reagent contains HAV antibody-1 and goat anti-mouse IgG polyclonal antibody in the control zone (C line) which are pre-fixed on the nitrocellulose membrane in the test zone (T line). The labeled HAV antibody-2 is contained in the labeled pad. During the detection, the HAV antigen in the sample combines with the labeled antibody-2 to form a complex which moves forward along the nitrocellulose membrane under the chromatographic action. When it passes through the test zone (T line), it combines with the coated HAV antibody-1 on the membrane to form a red reaction band in the test zone (T line). The labeled HAV antibody-2 moves to the control zone (C line) and combines with the coated goat anti-mouse IgG polyclonal antibody to form a red band. The negative sample will not appear a red band in the test zone (T line) but only in the control zone (C line). Whether the sample contains HAV virus antigen or not, a red band will appear in the control zone (C line) as a standard for judging whether the chromatographic process is normal.

[0065] (II) Detection process:

[0066] Before the detection, the fecal sample is allowed to recover to 15-30°C.

[0067] 1. Sample preparation

[0068] (1) Unscrew the cap 2 of the sampling tube 100 and take out the sampling stick 3 to prepare for picking the sample 500.

[0069] (2) Pick up at least 4 different positions of the fecal sample with the sampling stick 3 and take about 125 mg of the sample (about the size of a peanut). Then insert the sample into the sampling tube containing the treatment liquid 400.

[0070] (3) Screw the cap 2 of the sampling tube.

[0071] (4) Shake or stir thoroughly to mix the sample and the sample treatment liquid well.

[0072] 2. Detection

[0073] (1) Take out the reagent kit 300 containing the prepared HAV antigen detection test strip 200 in step (I) and place it on a clean flat table. Keep the sampling tube 100 with the mouth upward, unscrew the cap 2 at the uppermost end of the sampling tube, then invert the sampling tube, gently squeeze it and vertically drop 3 drops of bubble-free sample liquid on the reagent sample adding area of the HAV antigen detection test strip 200 in the reagent kit 300. Figure 14

[0074] (2) Wait for the appearance of the red band and read the test result in 15-20 minutes.

[0075] ​The fecal sample is collected by using the sampling tube 100, so that the hands of the detection personnel can be prevented from directly contacting the fecal sample, and meanwhile, the discomfort of the detection personnel caused by directly looking at the fecal sample can be reduced due to the shielding of the shielding assembly 4. The detection result is not negatively affected by using the sampling tube to collect the sample and perform subsequent detection, and the detection result is accurate.

Claims

1. A sampling tube comprising a tube body, a tube cap and a sampling stick, characterized in that The sampling rod extends out of the tube body to the outside of the tube cover. The sampling rod is internally provided with a hollow chamber. The bottom end of the sampling rod is provided with a spiral sampling part. The sampling rod is provided with a shielding assembly. The shielding assembly comprises a fixed plate coaxially arranged on the side wall of the sampling rod. The outer diameter of the fixed plate is smaller than the inner diameter of the tube body. A plurality of adjacent and upwardly overturnable connecting flaps are arranged around the outer periphery of the fixed plate. The plurality of flaps are fan-shaped with narrow inside and wide outside and are radially distributed with the fixed plate as the center. The fixed plate is further provided with a supporting plate for blocking the flaps from overturning and falling below the fixed plate.

2. The sampling tube of claim 1, wherein, The plurality of flaps are arranged in line. The gap between adjacent flaps is less than 0.3mm.

3. The sampling tube of claim 1, wherein, The plurality of flaps are arranged in two rows in sequence and are stacked in the side edge part of the adjacent two flaps in up and down directions, forming a complete disc-shaped visual barrier.

4. The sampling tube according to claim 2 or 3, characterized in that The cross-sectional shape of the fixed plate is set as a circular inner ring and a regular polygon outer ring. The cross-sectional shape of the plurality of flaps is set as a regular polygon inner ring matched with the outer ring of the fixed plate and a circular outer ring.

5. The sampling tube of claim 4, wherein, The number of side lengths of the regular polygon is 6-12.

6. The sampling tube of claim 4, wherein, Each outer side of the fixed plate is provided with a concave rotating groove. One end of the flap close to the fixed plate is provided with a linkage plate matched with the rotating groove. The linkage plate extends into the rotating groove and is rotatably connected with the rotating groove through a rotating shaft. One end of the supporting plate is fixedly connected to the bottom of the rotating groove, and the other end extends horizontally below the linkage plate.

7. The sampling tube of claim 1, wherein, The side wall of the sampling rod is provided with a plurality of liquid inlet holes connected with the chamber at one end close to the tube cover.

8. The sampling tube of claim 1, wherein, The bottom of the fixed plate is symmetrically provided with a plurality of stirring plates with their centers as the center.

9. The sampling tube of claim 1, wherein, The fixed plate and the flaps are translucent.

10. The sampling tube of claim 1, wherein, The fixed plate and the linkage plate are made of hard plastic, and the flaps are made of soft plastic.

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