A sampling device

Abstract

This application provides a sampling device, relating to the field of sampling technology. The sampling device includes: a common connector; at least two sampling containers, each connected to the common connector, which is used to connect to a sampling pipeline. The sampling device provided in this application solves the problems of cumbersome operation and low efficiency in the sampling process of the prior art.

Description

Technical Field

[0001] This application relates to the field of sampling technology, and more particularly to a sampling device. Background Technology

[0002] Sampling and testing materials is an important part of monitoring product quality during the production process of some products.

[0003] In related technologies, when sampling materials, workers usually install the sampling container onto the sampling pipeline of the material tank, then open the sampling valve to dispense some material into the sampling container, then close the sampling valve and detach the sampling container from the sampling pipeline.

[0004] However, when multiple samples of materials are required, staff must repeat the above operations, namely, installing and separating each sampling container one by one, which makes the sampling process cumbersome and inefficient. Utility Model Content

[0005] This application provides a sampling device to solve the problems of cumbersome operation and low efficiency in the sampling process of the prior art.

[0006] This application provides a sampling device, including:

[0007] Public connector;

[0008] At least two sampling containers, each of which is connected to the common connector, which is used to connect the sampling pipeline.

[0009] In one possible implementation, the system further includes a cabinet with a fixing clamp for securing at least one of the common connector and the sampling container to the cabinet.

[0010] In one possible implementation, the common connector is provided with a first connecting portion, and the fixing clamp includes a base, a clamping plate and a locking member. The base is disposed on the cabinet, the clamping plate is movably disposed on the base, and the locking member is used to lock the clamping plate to the base and clamp the first connecting portion between the base and the clamping plate.

[0011] In one possible implementation, the fixing clamp further includes at least one positioning element disposed on the cabinet, and the common connector is provided with at least one second connecting portion, the positioning element being used to cooperate with the second connecting portion to position the common connector on the cabinet.

[0012] In one possible implementation, the common connector is provided with at least two branch pipes and at least two control valves, the sampling container is connected to the common connector through the branch pipes, and the control valves are used to control the opening and closing of the branch pipes.

[0013] In one possible implementation, the fixing fixture further includes a positioning block, a moving block, and a driving component. The positioning block and the driving component are both disposed on the cabinet. The driving component is used to control the sliding of the moving block to restrict the branch pipe between the positioning block and the moving block.

[0014] In one possible implementation, at least one of the positioning block and the moving block is provided with a receiving groove, and the branch pipe is correspondingly received in the receiving groove.

[0015] In one possible implementation, the positioning block is provided with a guide rod that passes through the moving block along the moving direction of the moving block, so as to guide the moving block to slide.

[0016] In one possible implementation, the fixing clamp further includes a positioning post disposed on the cabinet body, the positioning post having a positioning slot, and at least a portion of the branch pipe being engaged in the positioning slot.

[0017] In one possible implementation, the branch pipe is provided with a section to be cut, which is configured to self-seal after being cut.

[0018] This application provides a sampling device that includes: a common connector; and at least two sampling containers, each connected to the common connector, which is used to connect to a sampling pipeline. During sampling, simply connecting the common connector to the sampling pipeline allows for material dispensing from multiple sampling containers connected to the common connector. This reduces the need for individual installation of each sampling container, thus quickly achieving the goal of sampling a target number of containers. The sampling process is more convenient and efficient, solving the problems of cumbersome and inefficient sampling processes in existing technologies. Attached Figure Description

[0019] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0020] Figure 1 A schematic diagram of the sampling device provided in this application;

[0021] Figure 2 for Figure 1 A magnified structural diagram of part A in the middle;

[0022] Figure 3 for Figure 1 Schematic diagram of the installation structure of the fixed clamp;

[0023] Figure 4 for Figure 1 Schematic diagram of the installation structure of the common connector;

[0024] Figure 5 for Figure 4 A magnified structural diagram of part B in the middle section;

[0025] Figure 6 for Figure 3 A magnified structural diagram of section C;

[0026] Figure 7 for Figure 2 A schematic diagram of the structure of the protective box.

[0027] Explanation of reference numerals in the attached figures:

[0028] 100 - Common connector; 110 - First connection part; 120 - Second connection part; 130 - Material conveying pipe;

[0029] 200 - Sampling container; 210 - Protective box; 211 - Box body; 212 - Side plate; 213 - Limiting screw;

[0030] 300 - Branch pipe; 310 - Section to be cut;

[0031] 400 - Control valve;

[0032] 500 - Cabinet;

[0033] 600 - First fastener; 610 - Base; 620 - Clamping plate; 630 - Locking element;

[0034] 700 - Second fastener; 710 - Positioning element; 711 - Connecting hole;

[0035] 800-Third fixing component; 810-Positioning block; 811-Crossbeam; 812-Support beam; 820-Moving block; 830-Driving component; 840-Receiving groove; 850-Guide rod;

[0036] 900 - Fourth fastener; 910 - Positioning pin; 911 - Positioning slot;

[0037] 1000 - Waste liquid container;

[0038] 1100-Flow Meter;

[0039] 1200-pallet.

[0040] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0041] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0042] In related technologies, when sampling materials, workers usually install the sampling container onto the sampling pipeline of the material tank, then open the sampling valve to dispense some material into the sampling container, then close the sampling valve and detach the sampling container from the sampling pipeline.

[0043] However, when multiple samples of materials are required, the above operations must be repeated. For example, the first sampling container is installed, the material is dispensed, and then separated from the sampling pipeline; the second sampling container is installed, the material is dispensed, and then separated from the sampling container... This process is repeated until the target number of sampling containers are sampled; thus, the sampling process is cumbersome and inefficient.

[0044] Therefore, this application provides a sampling device, including: a common connector; at least two sampling containers, each connected to the common connector, which is used to connect to a sampling pipeline. Thus, during sampling, only the common connector needs to be connected to the sampling pipeline, and then materials can be dispensed from the multiple sampling containers on the common connector. This reduces the need to install multiple sampling containers one by one, thereby quickly achieving the purpose of sampling the target number of containers. The sampling operation is more convenient and efficient, solving the problems of cumbersome operation and low efficiency in the prior art.

[0045] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0046] like Figure 1 and Figure 2 As shown in the embodiment of this application, a sampling device includes:

[0047] Public connector 100;

[0048] At least two sampling containers 200, each sampling container 200 is connected to a common connector 100, which is used to connect the sampling pipeline.

[0049] The sampling container 200 can be a sampling bottle, sampling bag, or other container; there are no restrictions as long as it can dispense some material. The common connector 100 can be a tubular or other shape, as long as its interior is hollow; there are no restrictions. Each sampling container 200 is connected to the common connector 100, which is connected to the sampling pipeline, so that the material in the sampling pipeline can be dispensed into different sampling containers 200 after passing through the common connector 100.

[0050] Therefore, during sampling, only the common connector 100 needs to be connected to the sampling pipeline, and then the materials can be dispensed into the multiple sampling containers 200 on the common connector 100. This reduces the step of installing each sampling container 200 individually, thus quickly achieving the goal of sampling the target number of sampling containers 200. The sampling operation is more convenient and efficient, solving the problems of cumbersome operation and low efficiency in the existing technology. Specifically, such as... Figure 1 and Figure 2 As shown, the common connector 100 is provided with at least two branch pipes 300 and at least two control valves 400. The sampling container 200 is connected to the common connector 100 through the branch pipes 300, and the control valves 400 are used to control the opening and closing of the branch pipes 300.

[0051] It should be noted that the number of sampling containers 200 on the common connector 100 can be reasonably set according to actual needs, such as three, five, or other numbers. In this case, the number of branch pipes 300 and control valves 400 corresponds to the number of common connectors 100. Each sampling container 200 is connected to the common connector 100 through a corresponding branch pipe 300, that is, one end of the branch pipe 300 is connected to the common connector 100, and the other end is connected to the sampling container 200.

[0052] In this embodiment, as Figure 2 As shown, each control valve 400 is installed on the common connector 100, and each control valve 400 is respectively set for each branch pipe 300, so that the opening and closing of the corresponding branch pipe 300 can be controlled by different control valves 400, thereby facilitating individual control of the sampling process of different sampling containers 200. At this time, when separating the sampling container 200 from the sampling pipeline, it is only necessary to cut the branch pipe 300.

[0053] The control valve 400 can be a ball valve, butterfly valve, or other valve, or a three-way valve. There are no restrictions on this. In this embodiment, the control valve 400 is preferably a three-way valve.

[0054] In implementation, the common connector 100, multiple sampling containers 200, multiple branch pipes 300, and multiple control valves 400 can be combined into a single sampling assembly. Subsequently, multiple sampling assemblies can be installed on the sampling pipeline according to actual needs. During installation, the common connectors 100 in each sampling assembly are connected sequentially through the feed pipe 130, and then the common connector 100 located at one end of the distribution direction is connected to the sampling pipeline.

[0055] In addition, such as Figure 1 As shown, a flow meter 1100 can also be added. The flow meter 1100 is installed on the sampling pipeline to detect the flow rate of the material in the sampling pipeline, thereby reflecting the sampling amount dispensed into the sampling container 200. This facilitates timely control of the opening and closing of each control valve 400, thus enabling control of the sampling amount. In actual operation, if a main valve is installed on the sampling pipeline, the flow meter 1100 can also be electrically connected to the main valve. When the material flow rate detected by the flow meter 1100 reaches a preset value, the main valve is triggered to close the sampling pipeline.

[0056] In some embodiments, such as Figure 2 As shown, a section 310 to be cut is provided on the branch pipe 300. The section 310 to be cut is configured to self-seal after being cut.

[0057] It should be noted that a portion of the branch pipe 300 is designated as a cut-off section 310. This cut-off section 310 can be a thin-walled structure made of stainless steel, alloy, metal, or other special materials. This allows the pipe opening edge at the cut-off section 310 to deform inwards after being cut. The cut edge can then be overlapped and folded to achieve a seal. Therefore, when separating the sampling container 200, the branch pipe 300 can be cut at the cut-off section 310, and the cut edge at the cut-off section 310 can be overlapped and folded to simultaneously achieve a seal, improving the ease of separating the sampling container 200.

[0058] During implementation, an intelligent robot can be set up on site to cut the part to be cut 310 and fold the cut edge of the part to be cut 310 to achieve sealing. Then, the intelligent robot can transport the sampling container 200 separated from the sampling pipeline.

[0059] In some embodiments, such as Figure 1 As shown, the sampling device also includes a cabinet 500, on which a fixing clamp is provided for fixing at least one of the common connector 100 and the sampling container 200 to the cabinet 500.

[0060] It should be noted that each sampling component is installed in cabinet 500, so that during movement or transportation, only cabinet 500 needs to be moved to move each sampling component, making the process more convenient. In implementation, multiple casters can also be installed at the bottom of cabinet 500 to further improve the ease of movement.

[0061] Secondly, by fixing the common connector 100 or the sampling container 200 with fixing clamps, the stability of the common connector 100 and the sampling container 200 installed on the cabinet 500 can be improved.

[0062] During implementation, when the sampling device is used in conjunction with an intelligent robot, a controller can be added to the cabinet 500 to establish a communication connection with the intelligent robot, thereby facilitating the control of the sampling process.

[0063] In this embodiment, the number of fixing fixtures is set to correspond to the number of sampling components, such as... Figure 2 As shown, the fixing clamp includes a first fixing member 600, a second fixing member 700, a third fixing member 800, and a fourth fixing member 900. The first fixing member 600 and the second fixing member 700 are used to fix the common connector 100, while the third fixing member 800 and the fourth fixing member 900 are used to fix the branch pipe 300.

[0064] In some embodiments, such as Figure 3 and Figure 4 As shown, the common connector 100 is provided with a first connecting part 110. The fixing clamp includes a base 610, a clamping plate 620 and a locking member 630. The base 610 is provided on the cabinet 500, the clamping plate 620 is movably provided on the base 610, and the locking member 630 is used to lock the clamping plate 620 to the base 610 and clamp the first connecting part 110 between the base 610 and the clamping plate 620.

[0065] In this embodiment, the first fixing member 600 includes a base 610, a clamping plate 620, and a locking member 630. The base 610 can be fixed to the cabinet 500 by screwing, welding, snapping, or other means. The clamping plate 620 is movably connected to the side of the base 610 away from the cabinet 500, and the upper end of the clamping plate 620 is hinged to the base 610. The locking member 630 can be a screw, which passes through the clamping plate 620 and is threaded to the base 610. The locking member 630 can also be a bolt, a buckle, or other component, as long as it can lock the clamping plate 620 to the base 610.

[0066] The common connector 100 integrally forms a first connecting part 110, which can also be fixed to the common connector 100 by bonding, welding, screwing or other means.

[0067] During installation, the common connector 100 is placed below the base 610, then the first connecting part 110 is inserted between the clamping plate 620 and the base 610, and finally the locking member 630 is tightened so that the first connecting part 110 is clamped by the clamping plate 620, thereby fixing the common connector 100 to the cabinet 500.

[0068] In some embodiments, such as Figure 3 and Figure 4 As shown, the fixing fixture also includes at least one positioning element 710, which is disposed on the cabinet 500. The common connector 100 is provided with at least one second connecting part 120. The positioning element 710 is used to cooperate with the second connecting part 120 to position the common connector 100 on the cabinet 500.

[0069] In this embodiment, the common connector 100 is provided with at least one second connecting portion 120. The number of second connecting portions 120 can be set according to the number of branch pipes 300, and the distribution direction of the second connecting portions 120 is consistent with the distribution direction of the branch pipes 300. The second connecting portion 120 can be a columnar pin, or it can be a pin formed in other ways, without limitation. The second connecting portion 120 can be integrally formed with the common connector 100, or it can be connected to the common connector 100 by bonding or welding.

[0070] It should be noted that, as Figure 5 As shown, the second connecting part 120 is located on the side of the common connector 100, so that the first connecting part 110 and the second connecting part 120 form a 90-degree angle.

[0071] In this embodiment, the second fixing member 700 includes a plurality of positioning members 710. The positioning members 710 can be L-shaped, plate-shaped, or other shapes. The positioning members 710 can be fixed to the cabinet 500 by screwing, gluing, or other means. It should be noted that the end of the positioning member 710 facing the common connector 100 has a connecting hole 711. The number of positioning members 710 can be adapted to the number of the second connecting parts 120.

[0072] During installation, each of the second connecting parts 120 can be inserted into the corresponding connecting holes 711 on the positioning member 710 to achieve the purpose of positioning the common connector 100. Finally, the first connecting part 110 is clamped between the base 610 and the clamping plate 620 to complete the installation of the common connector 100. This makes the common connector 100 more stable after installation and the installation process more convenient.

[0073] In other embodiments, a connection hole 711 may be provided on the common connector 100. In this case, the positioning member 710 is a pin for cooperating with the connection hole 711, and the pin is provided on the cabinet 500.

[0074] In addition, during implementation, a waste liquid container 1000 can be added to the cabinet 500. The waste liquid container 1000 can be a sampling bag, sampling bottle, or other container. The waste liquid container 1000 is also connected to the common connector 100 at the end of the common connector 100 along the distribution direction of the common connector 100 via a branch pipe 300. The branch pipe 300 is also equipped with a control valve 400 to control the collection of waste liquid into the waste liquid container 1000.

[0075] In some embodiments, such as Figure 3 As shown, the fixing fixture also includes a positioning block 810, a moving block 820, and a driving component 830. The positioning block 810 and the driving component 830 are both mounted on the cabinet 500. The driving component 830 is used to control the sliding of the moving block 820 to restrict the branch pipe 300 between the positioning block 810 and the moving block 820.

[0076] In this embodiment, the third fixing member 800 includes a positioning block 810, a moving block 820, and a driving member 830. The positioning block 810 includes an integrally formed crossbeam 811 and two support beams 812. The two support beams 812 are located at both ends of the crossbeam 811. The crossbeam 811 extends along the distribution direction of each branch pipe 300. The support beams 812 can be fixed to the cabinet 500 by screwing, welding, or other means, so that the branch pipe 300 is located on the side of the crossbeam 811 facing the cabinet 500.

[0077] At this time, the movable block 820 is positioned between the crossbeam 811 and the cabinet 500, and the branch pipe 300 is located between the movable block 820 and the crossbeam 811. The drive unit 830 is mounted on the cabinet 500, and the drive unit 830 controls the movable block 820 to move closer to or away from the crossbeam 811, thereby restricting the branch pipe 300 between the movable block 820 and the crossbeam 811, thus completing the fixation of the branch pipe 300.

[0078] In implementation, the drive component 830 can be a cylinder, which can be installed on the side of the cabinet 500 opposite to the movable block 820. The push rod on the cylinder passes through the cabinet 500 and is connected to the movable block 820 via screws, plugs, or other means, thereby controlling the movement of the movable block 820. Of course, the drive component 830 can also be a hydraulic cylinder, an electric telescopic rod, or other components; there are no restrictions, as long as it can control the movement of the movable block 820. Furthermore, the drive component 830 can also be located on the side of the cabinet 500 facing the movable block 820.

[0079] Furthermore, such as Figure 3 As shown, at least one of the positioning block 810 and the moving block 820 is provided with a receiving groove 840, and the branch pipe 300 is correspondingly received in the receiving groove 840.

[0080] It should be noted that the number of receiving slots 840 is set in accordance with the number of branch pipes 300. In this embodiment, the receiving slots 840 are opened on the crossbeam 811 in the positioning block 810, so that the branch pipes 300 can be respectively received in each receiving slot 840. Then, when the moving block 820 is brought close to the crossbeam 811, the branch pipes 300 can be restricted in the receiving slots 840, so as to achieve the purpose of fixing the branch pipes 300 and at the same time reduce the possibility of damage to the branch pipes 300.

[0081] In other embodiments, the receiving groove 840 may be formed on the moving block 820; or partial grooves may be formed on both the moving block 820 and the crossbeam 811, so that the grooves on the corresponding moving block 820 and the grooves on the crossbeam 811 together form the receiving groove 840.

[0082] Meanwhile, a guide rod 850 is provided on the positioning block 810. The guide rod 850 passes through the moving block 820 along the moving direction of the moving block 820 so as to guide the moving block 820 to slide.

[0083] Specifically, the two ends of the guide rod 850 can be connected to the crossbeam 811 and the cabinet 500 respectively by welding, screwing, plugging, or other methods. There are two guide rods 850, but other quantities can also be provided. The guide rod 850 passes through the moving block 820 along the moving direction of the moving block 820, thereby guiding the movement of the moving block 820 and improving the stability and accuracy of the moving block 820 during movement.

[0084] In some embodiments, such as Figure 3 and Figure 6 As shown, the fixing fixture also includes a positioning post 910, which is set on the cabinet 500. The positioning post 910 has a positioning slot 911, and at least a portion of the branch pipe 300 is engaged in the positioning slot 911.

[0085] In this embodiment, the fourth fixing member 900 includes at least one positioning post 910, and the number of positioning posts 910 corresponds to the number of branch pipes 300. Each positioning post 910 has a positioning slot 911, which can be interference-fitted with the branch pipe 300 to engage at least a portion of the branch pipe 300, thereby providing further support and guidance for the branch pipe 300 and improving the overall stability of the branch pipe 300.

[0086] In a preferred embodiment, such as Figure 2 As shown, on the same branch pipe 300, the part to be cut 310 can be set between the third fixing member 800 and the fourth fixing member 900, so that the parts of the branch pipe 300 located on both sides of the part to be cut 310 can be fixed, so that the cutting operation can be completed more stably at the part to be cut 310.

[0087] In some embodiments, such as Figure 2 and Figure 7 As shown, the fixing fixture may also include a tray 1200, which is fixed to the cabinet 500 by screwing, welding or other means. Each sampling container 200 is placed on the tray, thereby reducing the possibility of damage to the branch pipe 300 caused by the weight of the sampling container 200.

[0088] In addition, a protective box 210 can be added to protect the sampling container 200. The protective box 210 includes a box body 211 and a side plate 212. The box body 211 has an opening at the top and an opening on one side. The side wall of the box body 211 opposite to the side opening is threadedly connected with a limit screw 213. The side plate 212 is vertically inserted into the box body 211 and closes the opening on the side of the box body 211.

[0089] During installation, the sampling container 200 can be placed inside the protective box 210, and the sampling container 200 can be secured within the protective box 210 using the limiting screws 213, reducing the possibility of the sampling container 200 separating from the protective box 210. Then, the side plate 212 can be installed. This securely mounts the sampling container 200 within the protective box 210, protecting it and reducing the possibility of damage.

[0090] For example, a slot for inserting a side panel 212 can be provided on the box body 211. After the side panel 212 is inserted into the box body 211, the side panel 212 and the slot are interference fit. Of course, the side panel 212 can also be connected to the box body 211 by screwing, snap-fitting or other means, and there is no limitation on this.

[0091] In summary, the sampling device provided in this application embodiment only requires connecting the common connector 100 to the sampling pipeline during sampling, and then the multiple sampling containers 200 on the common connector 100 can be used to dispense materials. This reduces the steps of installing multiple sampling containers 200 one by one, thereby quickly achieving the purpose of sampling the target number of sampling containers 200. The sampling operation is more convenient and efficient, solving the problems of cumbersome operation and low efficiency in the sampling process of the prior art.

[0092] Finally, it should be noted that other embodiments of this utility model will readily occur to those skilled in the art upon consideration of the specification and practice of the utility model disclosed herein. This utility model is intended to cover any variations, uses, or adaptations of this utility model that follow the general principles of this utility model and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this utility model is limited only by the appended claims.

Claims

1. A sampling device, characterized in that, include: Common connector (100); At least two sampling containers (200) are connected to the common connector (100) for connecting the sampling pipeline.

2. The sampling device according to claim 1, characterized in that, It also includes a cabinet (500) on which a fixing clamp is provided for fixing at least one of the common connector (100) and the sampling container (200) to the cabinet (500).

3. The sampling device according to claim 2, characterized in that, The common connector (100) is provided with a first connecting part (110). The fixing clamp includes a base (610), a clamping plate (620) and a locking member (630). The base (610) is disposed on the cabinet (500). The clamping plate (620) is movably disposed on the base (610). The locking member (630) is used to lock the clamping plate (620) to the base (610) and clamp the first connecting part (110) between the base (610) and the clamping plate (620).

4. The sampling device according to claim 3, characterized in that, The fixing clamp also includes at least one positioning element (710), which is disposed on the cabinet (500). The common connector (100) is provided with at least one second connecting part (120). The positioning element (710) is used to cooperate with the second connecting part (120) to position the common connector (100) on the cabinet (500).

5. The sampling device according to any one of claims 2-4, characterized in that, The common connector (100) is provided with at least two branch pipes (300) and at least two control valves (400). The sampling container (200) is connected to the common connector (100) through the branch pipes (300). The control valves (400) are used to control the opening and closing of the branch pipes (300).

6. The sampling device according to claim 5, characterized in that, The fixing fixture also includes a positioning block (810), a moving block (820), and a driving component (830). The positioning block (810) and the driving component (830) are both disposed on the cabinet (500). The driving component (830) is used to control the sliding of the moving block (820) to restrict the branch pipe (300) between the positioning block (810) and the moving block (820).

7. The sampling device according to claim 6, characterized in that, At least one of the positioning block (810) and the moving block (820) is provided with a receiving groove (840), and the branch pipe (300) is correspondingly received in the receiving groove (840).

8. The sampling device according to claim 6, characterized in that, The positioning block (810) is provided with a guide rod (850), which passes through the moving block (820) along the moving direction of the moving block (820) to guide the moving block (820) to slide.

9. The sampling device according to claim 5, characterized in that, The fixing fixture also includes a positioning post (910), which is disposed on the cabinet (500). The positioning post (910) has a positioning slot (911), and at least a portion of the branch pipe (300) is engaged in the positioning slot (911).

10. The sampling device according to claim 5, characterized in that, The branch pipe (300) is provided with a section to be cut (310), which is configured to self-seal after being cut.

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