Sampling device

Abstract

The application relates to the material detection technical field, and particularly relates to a sampling device. The sampling device comprises a sampling container, a sampling cavity is formed in the sampling container, the sampling container is provided with a feeding port and a discharging port which are communicated with the sampling cavity, the feeding port is arranged to be capable of being communicated with a reaction container containing a material to be sampled, a mounting part is arranged on the outer wall of the sampling container and is used for being connected to the reaction container, and a sampling core is movably arranged in the sampling cavity. In this way, sampling can be performed at any time. On the one hand, an operator does not need to directly sample in a high-temperature, high-pressure or toxic and harmful environment, the sampling process is controlled by a driving mechanism of the sampling core, and the safety risk of the operator is reduced. On the other hand, the sampling device is kept in a connected state with the reaction container, sampling can be performed in the running process of the reaction container, production needs not to be paused or the production load needs not to be reduced, and the production process can be continuously performed, so that the production efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of material testing technology, and in particular to a sampling device. Background Technology

[0002] In industrial production processes such as chemical, metallurgical, and pharmaceutical manufacturing, it is necessary to sample and test materials during the reaction process in order to monitor the reaction progress and control product quality.

[0003] Traditional sampling methods primarily involve manual sampling, where operators manually obtain material samples from the reaction vessel. However, manual sampling in high-temperature, high-pressure, or toxic / hazardous environments requires direct contact with the reaction vessel, posing significant safety risks. To ensure operator safety, production often needs to be stopped or the production load reduced to lower the temperature and pressure of the reaction vessel before sampling. This practice leads to production interruptions and impacts efficiency. Furthermore, changes in temperature and pressure during sampling can alter reaction conditions, affecting the continuity and stability of the reaction process, potentially causing reaction termination or product quality fluctuations, ultimately impacting product yield. Moreover, manual sampling typically involves long intervals, making continuous or high-frequency sampling impossible and thus failing to accurately reflect real-time changes in materials during the reaction. Summary of the Invention

[0004] This application provides a sampling device to solve the problems of manual sampling in the prior art, which affect production efficiency, product qualification rate and cannot achieve sampling within a short interval.

[0005] Specifically, the sampling device includes: a sampling container having a sampling cavity inside, and the sampling container having an inlet and an outlet communicating with the sampling cavity, the inlet being configured to communicate with a reaction vessel containing the material to be sampled; a mounting component disposed on the outer wall of the sampling container for connection to the reaction vessel so that the sampling device moves with the reaction vessel; and a sampling core movably disposed within the sampling cavity, the sampling core being driveable to open or block the inlet, so that the material to be sampled enters the sampling cavity from the reaction vessel when the inlet is open.

[0006] Preferably, the sampling device further includes a core-pulling driver connected to the sampling core, the core-pulling driver being used to drive the sampling core to perform reciprocating motion.

[0007] Preferably, the sampling device further includes a storage container disposed on the sampling container. The storage container has a storage cavity connected to the inlet and a discharge port connected to the storage cavity, so that the material in the sampling cavity can enter the storage cavity through the discharge port and be discharged through the discharge port.

[0008] Preferably, the sampling device further includes a discharge valve disposed at the discharge port, which can be driven to open so that the material in the storage chamber is discharged from the discharge port.

[0009] Preferably, the sampling device further includes a vibrator disposed on the storage container, the vibrator being used to vibrate the storage container to promote the discharge of material from the storage chamber.

[0010] Preferably, the sampling device further includes a scraping ring plate disposed in the sampling chamber. The outer wall of the scraping ring plate contacts the cavity wall of the sampling chamber, and the scraping ring plate is sleeved on the outer periphery of the sampling core extractor so as to move along the cavity wall of the sampling chamber under the drive of the sampling core extractor, thereby cleaning the material attached to the cavity wall of the sampling chamber.

[0011] Preferably, the sampling device further includes an elastic element connected to the scraper ring plate, which is in its original length or compressed state when the sampling core is pulled out and the feed inlet is blocked.

[0012] Preferably, the sampling device further includes a mounting cylinder connected to the sampling container, the mounting cylinder having a cavity inside, the sampling core extractor including a rod and a plug disposed at the end of the rod, the plug being disposed in the cavity and fitting against the cavity wall, the scraper ring and the rod of its inner ring jointly separating the sampling cavity and the cavity to confine the material within the sampling cavity.

[0013] Preferably, the mounting cylinder and the sampling container are detachably connected, and the elastic element is provided at the connection between the mounting cylinder and the sampling container.

[0014] Preferably, the sampling device further includes a filter screen disposed at the connection between the mounting cylinder and the sampling container, the filter screen being used to prevent minute materials in the sampling chamber from entering the cavity.

[0015] The beneficial effects of this application are as follows: First, the sampling device is connected to the reaction vessel and can be sampled at any time through mounting components on the outer wall of the sampling container and a sampling core that is movably installed in the sampling chamber. On the one hand, operators do not need to sample directly in high-temperature, high-pressure, or toxic and harmful environments; the sampling process is controlled by the driving mechanism of the sampling core, reducing the safety risks to operators. On the other hand, the sampling device remains connected to the reaction vessel, allowing sampling to be performed while the reaction vessel is in operation, without interrupting production or reducing production load, thus enabling continuous production and improving production efficiency.

[0016] Secondly, by taking samples without interrupting the reaction process, the temperature and pressure of the reaction vessel remain stable and will not change due to shutdown or reduction in production load. This prevents changes in reaction conditions, ensures the continuity and stability of the reaction process, prevents material reaction termination or product quality fluctuations, and guarantees the product qualification rate.

[0017] Third, since the sampling device is connected to the reaction vessel, it can take samples at any time during the operation of the reaction vessel, allowing the sampling device to repeat the sampling operation at any predetermined time interval, thereby achieving continuous or high-frequency sampling, and thus accurately reflecting the real-time changes of materials during the reaction process. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the sampling device provided in the embodiments of this application; Figure 2 for Figure 1 Left view of the sampling device; Figure 3 for Figure 1 Longitudinal cross-section of the sampling device.

[0020] Figure label: 10. Sampling container; 11. Sampling chamber; 12. Inlet; 13. Outlet; 20. Mounting component; 30. Sampling core puller; 31. Rod; 32. Plug; 40. Core puller actuator; 50. Storage container; 51. Storage chamber; 52. Discharge port; 60. Discharge valve; 70. Vibrator; 80. Scraper ring; 90. Elastic component; 100. Mounting cylinder; 101. Cavity; 110. Filter screen; 120. Discharge actuator. Detailed Implementation

[0021] The technical solutions of this application will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] The following is combined Figures 1 to 3This application describes a sampling device provided in an embodiment, comprising: a sampling container 10 having a sampling cavity 11 formed inside, and the sampling container 10 having an inlet 12 and an outlet 13 communicating with the sampling cavity 11, the inlet 12 being configured to communicate with a reaction container containing the material to be sampled; a mounting member 20 disposed on the outer wall of the sampling container 10 for connecting to the reaction container so that the sampling device moves with the reaction container; and a sampling core extractor 30 movably disposed within the sampling cavity 11, the sampling core extractor 30 being driveable to open or block the inlet 12 so that the material to be sampled enters the sampling cavity 11 from the reaction container when the inlet 12 is open.

[0023] The function of mounting component 20 is to connect the sampling device to the reaction vessel, enabling the sampling device to move with the reaction vessel and maintain a constant relative position between the sampling device and the reaction vessel. The reaction vessel can be a rotary vessel. When the sampling device is positioned directly below the reaction vessel under the influence of the reaction vessel, the sampling core puller 30 opens the feed port 12, allowing the material to be sampled in the reaction vessel to enter the sampling chamber 11 through the feed port 12. Before the sampling core puller 30 opens the feed port 12, the feed port 12 is completely blocked by the sampling core puller 30, preventing the material in the reaction vessel from entering the sampling chamber 11.

[0024] Because the sampling device is directly installed on the reaction vessel, sampling can be performed without interrupting the reaction process, improving sampling safety and product production efficiency. Since the sampling device remains connected to the reaction vessel, the reaction conditions, such as temperature and pressure, remain stable during sampling and will not change due to shutdowns or reduced production load. This prevents changes in reaction conditions, ensures the continuity and stability of the reaction process, prevents material reaction termination or product quality fluctuations, and thus improves the product qualification rate.

[0025] Specifically, the mounting component 20 can be a flange. The sampling container 10 has a cylindrical structure, is made of 316L stainless steel, has an inner diameter of 50mm, an axial length of 100mm, and its inner wall is polished with a surface roughness Ra≤0.8μm, preferably 0.6μm.

[0026] Please refer to Figure 1 and Figure 3 In some embodiments provided in this application, the sampling device further includes a core-pulling driver 40 connected to the sampling core-pulling 30, the core-pulling driver 40 being used to drive the sampling core-pulling 30 to perform reciprocating motion.

[0027] Driven by the core-pulling driver 40, the sampling core 30 can automatically reciprocate, achieving automated continuous sampling without manual operation. The sampling device can automatically repeat the sampling operation within a set time interval, improving the automation level and efficiency of sampling. Compared with the manual sampling method in the prior art, the time interval of manual sampling is usually long. However, the sampling device of this application can achieve continuous or high-frequency sampling, significantly shortening the sampling time interval. In this way, the sampling device can accurately reflect the real-time changes of materials during the reaction process, providing accurate data support for the monitoring and control of the reaction process.

[0028] Specifically, the core-pulling actuator 40 is a double-acting cylinder with a cylinder diameter of 40mm, a stroke of 70mm, and a working pressure of 0.4MPa~0.6MPa. The two air ports of the core-pulling actuator 40 are connected to the compressed air source through electromagnetic reversing valves. The electromagnetic reversing valves are electrically connected to the controller (described in detail later). The controller controls the extension and retraction of the core-pulling actuator 40 according to a preset program.

[0029] Please refer to Figures 1 to 3 In some embodiments provided in this application, the sampling device further includes a storage container 50 disposed on the sampling container 10. The storage container 50 has a storage cavity 51 connected to the inlet 12 and a discharge port 52 connected to the storage cavity 51, so that the material in the sampling cavity 11 can enter the storage cavity 51 through the outlet 13 and be discharged through the discharge port 52.

[0030] The storage chamber 51 is connected to the outlet 13 of the sampling container 10, allowing the material in the sampling chamber 11 to enter the storage chamber 51 through the outlet 13. The storage chamber 51 is also connected to the discharge port 52, allowing the material in the storage chamber 51 to be discharged through the discharge port 52. Due to the arrangement of the storage container 50, after sampling by the sampling core extractor 30, the material can enter the storage chamber 51. At this time, the sampling core extractor 30 can block the inlet 12, preventing the material in the sampling chamber 11 from being pushed out through the inlet 12. The inlet 12 is located at the end of the sampling container 10, and the outlet 13 is located on the side of the sampling container 10. The axes of the inlet 12 and the outlet 13 are perpendicular, and the discharge port 52 is coaxial with the outlet 13. When the sampling device moves with the reaction vessel until the axis of the discharge port 52 is vertical, the material in the storage chamber 51 can be discharged from the discharge port 52 under its own gravity. Furthermore, the sampling core extractor 30 can perform multiple samplings, concentrating the samples in the storage chamber 51 before discharging them together, thereby improving sampling efficiency.

[0031] Specifically, the storage container 50 and the sampling container 10 are connected by a flange. The storage container 50 is a cone-bottomed cylindrical tank structure, made of 316 stainless steel, with a volume of 1L.

[0032] Please continue reading. Figures 1 to 3 In some embodiments provided in this application, the sampling device further includes a discharge valve 60 disposed at the discharge port 52, which can be driven to open so that the material in the storage chamber 51 is discharged from the discharge port 52.

[0033] The discharge valve 60 can prevent material leakage and also facilitate the discharge of samples as needed. When the discharge port 52 moves with the reaction vessel to a position directly below the reaction vessel, the discharge valve 60 opens, and the material in the storage chamber 51 is discharged from the discharge port 52 under its own gravity.

[0034] Specifically, the discharge valve 60 can be a pneumatic butterfly valve with a valve body diameter of DN25. It is connected to a discharge actuator 120 and opens and closes under the drive of the discharge actuator 120. The linkage control between the discharge actuator 120 and the core-pulling actuator 40 can automate the entire sampling and discharge process without manual intervention, greatly improving work efficiency and sampling reliability. The discharge valve 60 and the discharge port 52 can be connected via a flange.

[0035] Please continue reading. Figures 1 to 3 In some embodiments provided in this application, the sampling device further includes a vibrator 70 disposed on the storage container 50, the vibrator 70 being used to vibrate the storage container 50 to promote the discharge of material in the storage chamber 51.

[0036] The vibrator 70 generates vibrations of 50Hz to 200Hz, which propels the material in the storage chamber 51 downwards, thereby promoting the discharge of the material through the discharge port 52, especially for viscous and easily adherent materials. The vibrator 70 ensures that the material in the storage chamber 51 can be completely discharged, avoiding the accumulation and agglomeration of material in the storage chamber 51, and improving the collection efficiency and integrity of the sample.

[0037] The vibrator 70 can be an electromagnetic vibrator 70, a pneumatic vibrator 70, or other types of vibration devices. The vibration frequency and amplitude of the vibrator 70 can be adjusted according to the properties of the material. For example, for viscous materials, the vibration frequency and amplitude can be increased; for materials with good flowability, the vibration frequency and amplitude can be decreased.

[0038] Please refer to Figure 3 In some embodiments provided in this application, the sampling device further includes a scraping ring plate 80 disposed in the sampling chamber 11. The outer wall of the scraping ring plate 80 contacts the cavity wall of the sampling chamber 11, and the scraping ring plate 80 is sleeved on the outer periphery of the sampling core extractor 30 so as to move along the cavity wall of the sampling chamber 11 under the drive of the sampling core extractor 30, thereby cleaning the material attached to the cavity wall of the sampling chamber 11.

[0039] The scraper ring 80 is an annular structure whose outer diameter matches the inner diameter of the sampling chamber 11, allowing the outer wall of the scraper ring 80 to contact the cavity wall of the sampling chamber 11. Driven by the sampling core extractor 30, the scraper ring 80 moves along the cavity wall of the sampling chamber 11. During this process, relative movement occurs between the outer wall of the scraper ring 80 and the cavity wall of the sampling chamber 11, thereby cleaning the material adhering to the cavity wall of the sampling chamber 11. Furthermore, the scraper ring 80 cleans the cavity wall of the sampling chamber 11 once during each sampling, preventing material accumulation on the cavity wall. In chemical production, if the cavity wall of the sampling chamber 11 retains material from the previous sampling, it may affect the results of the next sampling, leading to a decrease in the representativeness of the sample. Therefore, the scraper ring 80 ensures the purity of the sample obtained each time, improving sampling accuracy and sample representativeness.

[0040] Please continue reading. Figure 3 In some embodiments provided in this application, the sampling device further includes an elastic element 90 connected to the scraper ring plate 80. When the sampling core 30 blocks the feed inlet 12, the elastic element 90 is in its original length state or compressed state.

[0041] When the sampling core puller 30 opens the feed inlet 12 under the drive of the sampling driver, it moves the scraper ring plate 80 to compress the elastic element 90. When the sampling core puller 30 finishes sampling and needs to seal the feed inlet 12, in addition to being driven by the sampling driver, the elastic element 90 can also provide power to the sampling core puller 30 through the scraper ring plate 80, so that the sampling core puller 30 moves toward the feed inlet 12 and resets. When the sampling core puller 30 seals the feed inlet 12, it provides a force to keep the sampling core puller 30 in the sealed position of the feed inlet 12, so as to prevent the sampling core puller 30 from opening the feed inlet 12 during the movement of the reaction vessel, thereby preventing the material from entering the sampling chamber 11 when sampling is not required.

[0042] Specifically, the elastic element 90 can be a compression spring with a free length of 30mm, a stiffness of 2.5N / mm, a pre-compression of 5mm after installation, and provides a pre-tightening force of approximately 12.5N.

[0043] Please refer to Figure 1 and Figure 3 In some embodiments provided in this application, the sampling device further includes an installation cylinder 100 connected to the sampling container 10. The installation cylinder 100 has a cavity 101 inside. The sampling core extractor 30 includes a rod 31 and a plug 32 disposed at the end of the rod 31. The plug 32 is disposed in the cavity 101 and fits against the cavity wall of the cavity 101. The scraper ring plate 80 and the rod 31 of its inner ring jointly isolate the sampling chamber 11 and the cavity 101 to confine the material within the sampling chamber 11.

[0044] The stopper 32 forms a sealed fit with the cavity wall of the cavity 101. When the sampling core puller 30 moves, the stopper 32 slides along the cavity wall of the cavity 101 to draw the material to be sampled from the feed port 12 into the sampling chamber 11 by air pressure. The inner ring of the scraper ring 80 cooperates with the rod 31 to form a sealed partition structure. This structure isolates the sampling chamber 11 from the cavity 101, preventing the material in the sampling chamber 11 from entering the cavity 101, thus avoiding the material from getting stuck between the stopper 32 and the cavity wall of the cavity 101, and thus preventing the stopper 32 from getting stuck and unable to move smoothly. The core puller 40 is connected to the mounting cylinder 100, and the driving end of the core puller 40 extends into the cavity 101 and connects with the stopper 32 to drive the entire sampling core puller 30 to move through the stopper 32.

[0045] Specifically, the mounting cylinder 100 is open at both ends. One end is sealed to the sampling container 10, and the other end is connected to the core-pulling actuator 40, which seals this end of the mounting cylinder 100. The sampling core 30 is a plunger-type structure made of stainless steel with a hardened surface, achieving a hardness of HRC55~60. The outer diameter of the rod 31 is 20mm, and its axial length is 150mm. Two sealing rings are axially arranged on the outer circumference of the plug 32 to achieve a seal between the plug 32 and the cavity wall of the cavity 101. The sealing rings are interference-fitted with the plug 32, with an interference amount of 0.3mm. The sealing rings are made of fluororubber with a Shore A hardness of 75.

[0046] Please refer to Figure 3 In some embodiments provided in this application, the mounting cylinder 100 and the sampling container 10 are detachably connected, and the elastic element 90 is disposed at the connection between the mounting cylinder 100 and the sampling container 10.

[0047] The detachable connection between the mounting cylinder 100 and the sampling container 10 facilitates the installation of the elastic element 90. Specifically, when installing the elastic element 90, the mounting cylinder 100 is separated from the sampling container 10, exposing the end of the sampling container 10. After the elastic element 90 is installed inside the sampling container 10, the mounting cylinder 100 is then connected to the sampling container 10, thus completing the preparation of the entire sampling device. Furthermore, the separation of the mounting cylinder 100 from the sampling container 10 allows for cleaning of both internal parts. Maintenance and replacement are also possible when the elastic element 90 experiences elastic fatigue or when the scraper ring 80 wears, eliminating the need to replace the entire sampling device and reducing maintenance costs.

[0048] Specifically, a flange is provided on the outer periphery of the end of the mounting cylinder 100 that is connected to the sampling container 10, and a flange is also provided on the outer periphery of the end of the sampling container 10 that faces the mounting cylinder 100, and the two flanges are connected.

[0049] Please continue reading. Figure 3In some embodiments provided in this application, the sampling device further includes a filter screen 110 disposed at the connection between the mounting cylinder 100 and the sampling container 10. The filter screen 110 is used to prevent minute materials in the sampling chamber 11 from entering the cavity 101.

[0050] When the particle size of the material to be sampled is very small, it may pass through the gap between the scraper ring plate 80 and the cavity wall of the sampling chamber 11 and move into the cavity 101. The function of the filter screen 110 is to prevent these tiny materials from entering the cavity 101, and to avoid the tiny materials from getting stuck between the plug head 32 and the cavity wall of the cavity 101, which would increase the friction between the two, thereby avoiding the aggravation of the wear of the plug head 32 and the cavity wall of the cavity 101, and the situation where the plug head 32 is stuck and cannot move.

[0051] Specifically, the filter screen 110 can be a small bag filter sleeve with a filter bag embedded inside. The filter bag is made of stainless steel woven mesh with a pore size of 1000 mesh to 1500 mesh, preferably 1200 mesh.

[0052] In some embodiments provided in this application, the sampling device further includes a controller electrically connected to the core-pulling actuator 40, the vibrator 70, and the discharge actuator 120. The controller is programmed to control the core-pulling actuator 40 to open the inlet 12 for sampling when the reaction vessel moves to a position directly below it (i.e., when the inlet 12 is directly below the reaction vessel). When the sampling device moves to a position where all the material in the sampling chamber 11 has entered the storage chamber 51, the controller controls the core-pulling actuator 40 to block the inlet 12. When the reaction vessel moves to a position directly below the discharge port 52 of the sampling device, the controller controls the vibrator 70 and the discharge actuator 120 to open, causing the discharge valve 60 to open, thereby allowing the material in the storage chamber 51 to be discharged from the discharge port 52 under gravity.

[0053] Specifically, the controller can be a PLC. The controller has a pre-stored timing control program, which is set to delay for 5 seconds after each sampling action, open the discharge valve 60 for 15 seconds to discharge the collected material into the downstream sample bottle, and close the discharge valve 60 after the duration ends, waiting for the next sampling cycle.

[0054] The operating principle of the sampling device in this application is as follows: Connect the sampling device to the reaction vessel via the mounting component 20, and connect the feed port 12 to the reaction vessel. Start the reaction vessel to make it move the sampling device. When the reaction vessel moves to the point where the sampling device is directly below the reaction vessel, the feed inlet 12 is directly below the reaction vessel. The core pull driver 40 is activated, which drives the sampling core pull 30 to open the feed inlet 12, and the material enters the sampling chamber 11. After the material in the sampling chamber 11 enters the storage chamber 51 by judging by time, the core pull driver 40 is activated, which drives the sampling core pull 30 to block the feed inlet 12. When the reaction vessel moves to the point where the discharge port 52 of the sampling device is directly below the reaction vessel, the vibrator 70 and the discharge driver 120 are started to open the discharge valve 60, and the material in the storage chamber 51 is discharged from the discharge port 52 under the action of gravity.

[0055] Verification showed that the sampling time for a single sampling operation is 15 seconds. In existing technologies, manual sampling takes approximately 30 minutes, thus significantly improving sampling efficiency.

[0056] In the description of this application, it should be understood that the terms "length", "upper", "lower", "inner", "axial", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0057] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between the components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0058] In this application, the term "some embodiments," etc., refers to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0059] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A sampling device, characterized in that, include: A sampling container having a sampling chamber inside, and the sampling container having an inlet and an outlet communicating with the sampling chamber, the inlet being configured to communicate with a reaction vessel containing the material to be sampled; and An installation component is disposed on the outer wall of the sampling container for connection to the reaction container so that the sampling device moves with the reaction container; and a sampling core is movably disposed within the sampling chamber, the sampling core being driveable to open or block the feed inlet so that the material to be sampled enters the sampling chamber from the reaction container when the feed inlet is open.

2. The sampling device according to claim 1, characterized in that, The sampling device further includes a core-pulling driver connected to the sampling core, the core-pulling driver being used to drive the sampling core to perform reciprocating motion.

3. The sampling device according to claim 1, characterized in that, The sampling device further includes a storage container disposed on the sampling container. The storage container has a storage cavity connected to the inlet and a discharge port connected to the storage cavity, so that the material in the sampling cavity can enter the storage cavity through the discharge port and be discharged through the discharge port.

4. The sampling device according to claim 3, characterized in that, The sampling device also includes a discharge valve disposed at the discharge port, which can be driven to open so that the material in the storage chamber is discharged from the discharge port.

5. The sampling device according to claim 3, characterized in that, The sampling device also includes a vibrator disposed on the storage container, the vibrator being used to vibrate the storage container to promote the discharge of material from the storage chamber.

6. The sampling device according to claim 1, characterized in that, The sampling device further includes a scraping ring plate disposed in the sampling chamber. The outer wall of the scraping ring plate contacts the cavity wall of the sampling chamber, and the scraping ring plate is sleeved on the outer periphery of the sampling core extractor so as to move along the cavity wall of the sampling chamber under the drive of the sampling core extractor, thereby cleaning the material attached to the cavity wall of the sampling chamber.

7. The sampling device according to claim 6, characterized in that, The sampling device also includes an elastic element connected to the scraper ring plate. When the sampling core is used to block the feed inlet, the elastic element is in its original length state or in a compressed state.

8. The sampling device according to claim 7, characterized in that, The sampling device further includes a mounting cylinder connected to the sampling container, the mounting cylinder having a cavity inside, the sampling core extractor including a rod and a plug disposed at the end of the rod, the plug being disposed in the cavity and fitting against the cavity wall, the scraper ring and the rod of its inner ring jointly isolating the sampling cavity and the cavity to confine the material within the sampling cavity.

9. The sampling device according to claim 8, characterized in that, The mounting cylinder is detachably connected to the sampling container, and the elastic element is disposed at the connection between the mounting cylinder and the sampling container.

10. The sampling device according to claim 9, characterized in that, The sampling device also includes a filter screen disposed at the connection between the mounting cylinder and the sampling container, the filter screen being used to prevent minute materials in the sampling chamber from entering the cavity.

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