Sampling device and sampling system

Abstract

The utility model discloses a sampling device and sampling system. Sampling device includes sampler, sampling tube and negative pressure source. The sampler is provided with the collection cavity and the inlet. The collection cavity is communicated with the inlet, and is used for collecting the test sample from the bin. The bin is provided with the storage cavity and the material taking opening communicated with the storage cavity. The sampling tube is detachably fixedly connected to the material taking opening, and extends into the storage cavity, and the sampling tube is communicated between the collection cavity and the storage cavity, and the sampling tube is configured as a nonmetallic tube or the surface of the sampling tube is provided with a nonmetallic coating. The negative pressure source is communicated with the collection cavity. The sampling device of the utility model, on the one hand, realizes the non-contact sampling of the material in the bin, is simple to operate, improves the sampling efficiency, reduces the risk of introducing magnetic foreign matters into the bin, on the other hand, avoids the problem that the sampling tube rubs with the material to generate magnetic foreign matters, and on the other hand, improves the material taking stability, assembly convenience and use flexibility of the material taking device.

Description

Technical Field

[0001] This utility model relates to the technical field of material sampling, and in particular to a sampling device and sampling system. Background Technology

[0002] Material silos are widely used in the lithium battery industry, serving to receive, store, and hold lithium battery materials. During use, the lithium battery materials are sampled and analyzed to adjust relevant process parameters.

[0003] Currently, sampling lithium battery materials in silos typically requires workers to wear protective gear such as dust suits and masks before opening the sampling port and manually using plastic tools (such as plastic spoons) to collect the lithium battery materials. However, this manual sampling method is not only time-consuming and labor-intensive, but also carries the risk of introducing magnetic foreign objects. Utility Model Content

[0004] In view of this, one objective of this utility model is to provide a sampling device and sampling system to solve the technical problems of time-consuming and labor-intensive manual sampling of lithium battery materials in the silo, as well as the risk of introducing magnetic foreign objects.

[0005] In a first aspect, embodiments of this utility model provide a sampling device, including a sampler, a sampling tube, and a negative pressure source. The sampler is provided with a collection chamber and an inlet. The collection chamber is connected to the inlet and is used to collect test samples from a hopper. The hopper is provided with a storage chamber and an extraction port connected to the storage chamber. The sampling tube is detachably fixedly connected to the extraction port and extends into the storage chamber. The sampling tube connects the collection chamber and the storage chamber. The sampling tube is configured as a non-metallic tube or has a non-metallic coating on its surface. The negative pressure source is connected to the collection chamber.

[0006] In one possible implementation, the sampler includes a collector and a sample storage bottle. In the height direction of the sampling device, one end of the collector is detachably and sealed to the sample storage bottle, the other end of the collector is connected to the negative pressure source, the side wall of the collector is provided with the inlet, and the bottom of the collector is provided with the outlet.

[0007] In one possible implementation, the sampler includes a collection component and a sample storage bottle. The collection component includes a mounting portion and a collection portion. The mounting portion is connected between the collection portion and the negative pressure source. The collection portion has an inlet at one end near the mounting portion and an outlet at the other end away from the mounting portion. The cross-sectional area of ​​the collection portion gradually decreases from the inlet to the outlet.

[0008] In one possible implementation, the sampler includes a collection element and a sample storage bottle, and the sampling device further includes a connecting tube and a first connecting joint. The two ends of the connecting tube are respectively connected between the sampling tube and the collection chamber. The first connecting joint is fixedly disposed relative to the sampling tube and detachably connected to the connecting tube.

[0009] In one possible implementation, the sampler includes a collection element and a sample storage bottle, and the sampling device further includes a second connecting joint, which is fixedly connected to the inlet and detachably connected to the end of the connecting tube away from the first connecting joint.

[0010] In one possible implementation, the sampler includes a collection element and a sample storage bottle, and the connecting tube is configured as a flexible connecting tube, which includes a rubber tube, a plastic tube, or a metal corrugated tube.

[0011] In one possible implementation, the sampler includes a collection element and a sample storage bottle, the sampling device further includes a control valve, the hopper includes a hopper body and a hopper cover, the hopper cover is connected to the hopper body to form the storage cavity, the hopper cover is provided with the sampling port, and an installation tube is provided at the position of the sampling port, the sampling tube is detachably connected to one end of the installation tube, and the control valve is detachably connected between the other end of the installation tube and the first connecting joint, and is used to control the connection or disconnection of the sampling tube and the connecting tube.

[0012] In one possible implementation, the sampler includes a collection element and a sample storage bottle, and the end of the connecting tube near the sampler is provided with an air blowing port, which is connected to the inner cavity of the connecting tube and is used to communicate with an air blowing device.

[0013] In one possible implementation, the sampler includes a collection element and a sample storage bottle, and the sampling device further includes a filter element disposed within the collection chamber. The height of the filter element and the negative pressure source in the height direction of the sampling device is less than the height of the inlet and the negative pressure source in the height direction of the sampling device.

[0014] Secondly, this utility model embodiment provides a sampling system, including a silo and a sampling device as described above, the sampling device being used to collect the test sample from the silo.

[0015] The sampling device and system provided by this utility model, on the one hand, collects the material in the silo into the collection chamber through a negative pressure source, thereby achieving non-contact sampling of the material in the silo, which is simple to operate, improves sampling efficiency, and reduces the risk of magnetic foreign objects being introduced into the silo; on the other hand, based on the configuration of the sampling tube as a non-metallic tube or the surface of the sampling tube being provided with a non-metallic coating, the sampling tube can avoid the problem of generating magnetic foreign objects by friction with the material in the silo during the process of the material entering the sampler, thereby improving the sampling accuracy; furthermore, the sampling tube is detachably fixedly connected to the material inlet and extends into the storage chamber, thereby improving the material sampling stability, assembly convenience, and usage flexibility of the sampling device. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a partial cross-sectional view of the sampling system provided in this embodiment of the utility model.

[0018] Figure 2 yes Figure 1 An enlarged view of a portion of the sampling device in the sampling system.

[0019] Figure 3 yes Figure 1 An enlarged view of part I in the image.

[0020] Key reference numerals in the attached drawings: Sampling system - 1000; Hopper - 100; Storage chamber - 101; Feed inlet - 102; Hopper body - 110; Hopper cover - 120; Installation pipe - 130; Sampling device - 200; Sampler - 20; Collection chamber - 201; Inlet - 202; Outlet - 203; Collection component - 21; Installation part - 211; Collection part - 212; Sample bottle - 22; Bottle body - 221; Bottle mouth - 222; Clamp - 23; Sampling tube - 30; Negative pressure source - 40; Connecting pipe - 50; Air blowing port - 501; First connecting joint - 60; First connecting joint - 70; Control valve - 80; Filter element - 90; Height direction - X; Radial direction - Y; Central axis - P.

[0021] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0023] It is understood that the terminology in the specification, claims, and accompanying drawings of this utility model is for describing specific embodiments only and is not intended to limit the utility model. The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish different objects, not to describe a specific order. Unless the context clearly states otherwise, the singular forms "a" and "described" are also intended to include the plural forms. The term "comprising," and any variations thereof, are intended to cover non-exclusive inclusion. Furthermore, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. The purpose of providing the following specific embodiments is to facilitate a clearer and more thorough understanding of the disclosure of this utility model, wherein terms indicating direction such as up, down, left, and right refer only to the position of the illustrated structure in the corresponding drawings. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "set on" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] The following description describes preferred embodiments of the present invention; however, the foregoing description is intended to illustrate the general principles of the present invention and is not intended to limit the scope of the present invention. The scope of protection of the present invention shall be determined by the appended claims.

[0025] Please see Figure 1 , Figure 1 This is a partial cross-sectional view of the sampling system 1000 provided in this embodiment of the present invention. The sampling system 1000 includes a hopper 100 and a sampling device 200. The sampling device 200 is used to collect test samples from the hopper 100. Therefore, on the one hand, users can obtain test samples through the sampling device 200, achieving non-contact sampling, which is simple to operate, improves sampling efficiency, reduces labor costs, and reduces the risk of magnetic foreign objects being introduced into the hopper 100; on the other hand, users can share the results of sample testing to provide feedback for adjusting relevant process parameters of the materials in the hopper 100, thereby improving material quality.

[0026] The silo 100 is used to store materials. The silo 100 is configured as a cylindrical structure to ensure uniform processing of materials within it. The silo 100 can be configured as at least one of a cylindrical structure and a conical structure. In some embodiments, the silo 100 can also be configured as a prism-shaped structure; however, this embodiment does not impose specific limitations.

[0027] The material can be a battery material. Battery materials include a variety of materials, such as, but not limited to, positive electrode materials, negative electrode materials, conductive agents, etc. In this embodiment, the material is illustrated as a battery material. It can be understood that the material can also be other materials, such as food materials, pharmaceutical materials, fertilizer materials, building materials, etc., and the category of the material is not limited here.

[0028] It should be noted that, Figure 1 The purpose of this diagram is merely to schematically illustrate the arrangement between the silo 100 and the sampling device 200, and it is not intended to specifically limit the connection positions, connection relationships, or specific structures of the various components. The diagram is only a schematic representation of the structure of the sampling system 1000 according to an embodiment of this utility model, and does not constitute a specific limitation on the sampling system 1000. In other embodiments of this utility model, the sampling system 1000 may include more or fewer components than shown in the diagram, or a combination of certain components, or different components. For example, the sampling system 1000 may also include, but is not limited to, a stirring component or a dispersing component. The stirring component is used to stir the material stored in the silo 100, thereby improving the mixing effect of the material. The dispersing component is used to shear and disperse the material stored in the silo 100.

[0029] In some embodiments, the sampling device 200 includes a sampler 20, a sampling tube 30, and a negative pressure source 40. The sampler 20 is provided with a collection chamber 201 and an inlet 202. The collection chamber 201 communicates with the inlet 202 and is used to collect test samples from the hopper 100. The hopper 100 is provided with a storage chamber 101 and an inlet 102 communicating with the storage chamber 101. The sampling tube 30 is detachably fixed to the inlet 102 and extends into the storage chamber 101. The sampling tube 30 communicates between the collection chamber 201 and the storage chamber 101. The sampling tube 30 is configured as a non-metallic tube or has a non-metallic coating on its surface. The negative pressure source 40 is connected to the collection chamber 201.

[0030] The sampling device 200 provided by this utility model, on the one hand, collects the material in the silo 100 into the collection chamber 201 through the negative pressure source 40, thereby realizing non-contact sampling of the material in the silo 100, which is simple to operate, improves sampling efficiency, and reduces the risk of magnetic foreign objects being introduced into the silo 100; on the other hand, based on the configuration of the sampling tube 30 as a non-metallic tube or the surface of the sampling tube 30 being provided with a non-metallic coating, the sampling tube 30 can avoid the problem of generating magnetic foreign objects by friction with the material in the silo 100 during the process of the material entering the sampler 20, thereby improving the sampling accuracy; furthermore, the sampling tube 30 is detachably fixedly connected to the material inlet 102 and extends into the storage chamber 101, thereby improving the material sampling stability, assembly convenience and usage flexibility of the sampling device.

[0031] For the sake of accuracy, all references to direction in this article should be expressed in terms of direction. Figure 1 For reference, the hopper 100 has a central axis P. The sampler 20 is supported on a bearing surface parallel to the central axis P of the hopper 100. The term "height direction X" refers to the direction perpendicular to the bearing surface, where the extension direction of the X-axis is the up-down direction (where the positive direction of the X-axis is up). The term "radial direction Y" refers to the direction parallel to the bearing surface, where the extension direction of the Y-axis is the left-right direction (where the positive direction of the Y-axis is right). For ease of description, the up-down and left-right directions in this utility model are relative positions and do not constitute a limitation. The height direction X and radial direction Y can be customized according to the specific structure of the product and the perspective presented in the accompanying drawings; this utility model does not impose specific limitations.

[0032] In this embodiment, the sampling tube 30 is entirely configured as a plastic tube, facilitating its alignment and assembly with the hopper 100. The sampling tube 30 is installed inside the hopper 100, with one end connected to the sampler 20 and the other end extending to the bottom of the hopper 100 or to the material accumulation area. The sampling tube 30 is entirely made of non-metallic material or its surface is coated with a non-metallic coating. This design avoids the problem of magnetic foreign matter generated by friction between the sampling tube 30 and the material during the process of guiding the material into the sampler 20, while ensuring efficient and stable extraction of the material, thus improving sampling efficiency and accuracy. In some embodiments, the sampling tube 30 may also be configured as a plastic tube; or, the sampling tube 30 may include a metal tube and a non-metallic coating on the surface of the metal tube.

[0033] The sampling tube 30 is detachably fixed to the feeding port 102. Therefore, the user can select sampling tubes 30 of different lengths to install inside the silo 100 according to different specifications of the silo 100 or the material capacity within the silo 100, thereby achieving sampling at specific heights and positions within the silo. In some embodiments, the sampling tube 30 can also be movably installed inside the silo 100 in the height direction X of the sampling device 200 to adjust the depth of the sampling tube 30 inserted into the silo 100. For example, the sampling tube 30 is threadedly connected to the silo 100, and the end of the sampling tube 30 near the silo 100 is provided with an external thread. The user can adjust the depth of the sampling tube 30 inserted into the silo 100 by adjusting the threaded position. Of course, in some other embodiments, the end of the sampling tube 30 near the silo 100 can be configured as a telescopic tube, so that the user can adjust the depth of the sampling tube 30 inserted into the silo 100.

[0034] Please refer to the following: Figure 1 and Figure 2 , Figure 2 yes Figure 1 The image shows a partial view of the sampling device 200 of the sampling system 1000. The sampler 20 includes a collection element 21 and a sample storage bottle 22. In the height direction X of the sampling device 200, one end of the collection element 21 is detachably and sealed to the sample storage bottle 22, and the other end of the collection element 21 is connected to a negative pressure source 40. The side wall of the collection element 21 is provided with an inlet 202, and the bottom of the collection element 21 is provided with an outlet 203. Therefore, by setting the sample storage bottle 22 and the collection component 21 to be detachably and sealed, it is convenient to carry out operations such as maintenance, replacement and cleaning of the sample storage bottle 22 and the collection component 21, and to ensure that the sampling process of the sample storage bottle 22 is carried out in a relatively closed environment, avoiding material leakage and the mixing of external impurities, thus improving the accuracy of sampling. On the other hand, the capacity of the sample storage bottle 22 can be designed according to actual sampling needs to meet the usage requirements in different scenarios, and the sample storage bottle 22 has good sealing and chemical stability, which can ensure that the quality of the sample taken is not affected during storage and transportation, and facilitate subsequent testing and analysis operations.

[0035] The sample collection bottle 22 is used to collect test samples drawn from the silo 100. The sample collection bottle has good sealing properties and chemical stability, ensuring that the quality of the collected samples is not affected during storage and transportation, facilitating subsequent testing and analysis. The capacity of the sample collection bottle can be designed according to actual sampling needs to meet the requirements of different scenarios.

[0036] Exemplarily, in this embodiment, the sampler 20 further includes a clamp 23. The collection component 21 is detachably and sealingly connected to the sample storage bottle 22 via the clamp 23. Specifically, the sample storage bottle 22 includes a bottle body 221 and a bottle opening 222 connected to one end of the bottle body 221. The area of ​​the radial cross-section of the bottle opening 222 in the height direction X perpendicular to the sampling device 200 is smaller than the area of ​​the radial cross-section of the bottle body 221 in the height direction X perpendicular to the sampling device 200. The storage port of the collection component 21 is detachably and sealingly connected to the bottle opening 222 of the sample storage bottle 22 via the clamp 23. Therefore, the clamp 23 enables a quick and reliable sealed connection between the bottle neck 222 of the sample storage bottle 22 and the outlet 203 of the collection component 21. Furthermore, the clamp 23 has a simple connection structure and is easy to operate. Tightening and loosening the clamp 23 improves the sealing performance at the connection between the sample storage bottle 22 and the collection component 21, allowing the material sampling process to be carried out in a relatively closed environment, avoiding material leakage and the introduction of external impurities. In some embodiments, the collection component 21 is configured as a flexible structure, enabling flexible installation and removal of the sample storage bottle 22 from the outlets 203 of different collection components 21, and improving the sealing performance at the connection between the sample storage bottle 22 and the collection component 21.

[0037] In some embodiments, the sampler 20 and the collector 21 can also be detachably fixedly connected by means of screwing, snap-fitting, interference fit, etc. The embodiments of this utility model do not make specific limitations.

[0038] In some other embodiments, the sampler 20 may omit the sample storage bottle 22, meaning the sampler 20 only includes the collection element 21. The sample testing device is directly connected to the outlet 203 of the collection element 21 via a testing pipeline.

[0039] In this embodiment, the collection component 21 includes an installation part 211 and a collection part 212. The installation part 211 is connected between the collection part 212 and the negative pressure source 40. An inlet 202 is provided at the end of the collection part 212 near the installation part 211. An outlet 203 is provided at the end of the collection part 212 away from the installation part 211. The cross-sectional area of ​​the collection part 212 gradually decreases from the inlet 202 to the outlet 203. Therefore, based on the fact that the cross-sectional area of ​​the collection part 212 gradually decreases from the inlet to the outlet 203, on the one hand, the material drawn into the collection component 21 by the negative pressure source 40 can flow quickly into the sample storage bottle 22 under the action of gravity, preventing material accumulation or blockage, ensuring stable and continuous discharge, and preventing material from entering the interior of the negative pressure source 40; on the other hand, the inner sidewall of the collection part 212 is inclined relative to the height direction X of the material taking device, so that the material can slide completely down, reducing the material residue in the collection component 21 and improving the material utilization rate.

[0040] Of course, in some embodiments, the collecting element 21 can be configured as a conical or cylindrical structure. The collecting element 21 can guide the material inside the collecting element 21 into the sample storage bottle 22 through a positive or negative pressure structure, and this embodiment of the present invention does not make specific limitations.

[0041] In some embodiments, the sampling device 200 further includes a connecting pipe 50 and a first connecting connector 70. The two ends of the connecting pipe 50 are respectively connected between the sampling pipe 30 and the collection chamber 201. The first connecting connector 70 is fixedly disposed relative to the sampling pipe 30 and detachably connected to the connecting pipe 50. Thus, on the one hand, the connecting pipe 50 connects between the sampling pipe 30 and the collection chamber 201, thereby improving the stable delivery of airflow and smooth extraction of materials during the sampling process; on the other hand, the connecting pipe 50 is connected to the sampling pipe 30 through the first connecting connector 70, allowing the first connecting connector 70 to connect connecting pipes 50 and sampling pipes 30 of different specifications or types, facilitating maintenance or replacement operations, and allowing for changes in the connection direction or layout of the sampling pipe 30 and the connecting pipe 50, as well as improving the reliability and sealing of the connection between the sampling pipe 30 and the connecting pipe 50.

[0042] The connecting pipe 50 is configured as a flexible connecting pipe. The flexible connecting pipe includes a rubber tube, a plastic tube, or a metal corrugated pipe. Therefore, by configuring the connecting pipe 50 as a flexible connecting pipe, the difficulty of alignment and assembly between the sampling tube 30 and the sampler 20 and the requirements for processing precision are reduced. When the connecting pipe 50 is configured as a rubber tube or a plastic tube, the sealing performance and stability of the connection between the connecting pipe 50 and the first connecting joint 70 are improved. When the flexible connecting pipe is configured as a metal corrugated pipe, the metal corrugated pipe has better pressure resistance and anti-aging performance, thereby extending the service life of the connecting pipe 50, reducing maintenance costs, and improving the stable airflow and smooth material extraction during the sampling process of the sampling device 200. When the flexible connecting pipe is configured as a metal corrugated pipe, the sampling device 200 also includes a sealing structure. The sealing structure is set at the connection between the metal corrugated pipe and the inlet 202 and the outlet 102, thereby ensuring the sealing effect at the connection between the connecting pipe 50 and the sampling tube 30 and the sampler 20. For example, in this embodiment, the connecting pipe 50 is configured as a plastic pipe. Of course, in some embodiments, the connecting pipe 50 may also be configured as a rigid connecting pipe 50, and this embodiment of the present invention does not make specific limitations.

[0043] It should be noted that flexible pipes are pipe structures made of flexible materials that can be bent, stretched, or vibrated within a certain range. Flexible pipes can be used to compensate for displacement, absorb vibration, or adapt to misalignment conditions in pipe connections. Rigid pipes 50 are pipe structures made of rigid materials with a fixed shape that cannot be bent or stretched. Rigid pipes 50 can be used to stabilize the transport of media and maintain structural strength in pipe connections.

[0044] The negative pressure source 40 serves as the power source for the sampler 20. The negative pressure generated by the negative pressure source 40 is transmitted to the interior of the sampler 20 through the connecting pipe 50, allowing the material to be smoothly extracted from the hopper 100 and into the sampler 20. In this embodiment, the negative pressure source 40 is configured as a vacuum device. Therefore, the vacuum device possesses excellent pumping capability and stable operating performance, enabling parameter adjustments based on different material characteristics and sampling requirements, thereby improving material sampling efficiency and the product quality of the test samples.

[0045] Vacuum devices include, but are not limited to, water ring vacuum pumps or rotary vane vacuum pumps. Water ring vacuum pumps exhibit good performance at large pumping volumes and are relatively simple in structure and easy to maintain. Rotary vane vacuum pumps offer higher vacuum levels and better pumping efficiency, but they are relatively noisy during operation, requiring selection based on specific sampling requirements and production environment. In some embodiments, the negative pressure source 40 can also be configured as, but is not limited to, compressed air equipment. The compressed air structure can be, but is not limited to, a venturi tube. Venturi tubes offer advantages such as simple structure and no oil contamination. It should be noted that the vacuum device can be configured according to actual sampling needs, on-site energy supply conditions, and the degree of contamination introduction, and this embodiment of the invention does not impose specific limitations.

[0046] In some embodiments, the sampling device 200 further includes a second connecting connector, which is fixedly connected to the inlet 202 and detachably connected to the end of the connecting tube 50 away from the first connecting connector 70. The second connecting connector facilitates maintenance or replacement of the connecting tube 50 and the sampler 20, and allows for changes in the connection direction or layout between the connecting tube 50 and the inlet 202, thereby improving the reliability and sealing of the connection between the connecting tube 50 and the inlet 202.

[0047] Please refer to the following: Figure 1 and Figure 3 , Figure 3 yes Figure 1An enlarged view of part I in the diagram. In some embodiments, the sampling device 200 further includes a control valve 80. The hopper 100 includes a hopper body 110 and a hopper cover 120. The hopper cover 120 is connected to the hopper body 110 to form a storage chamber 101. The hopper cover 120 is provided with a material inlet 102, and an installation tube 130 is provided at the location of the material inlet 102. The sampling tube 30 is detachably connected to one end of the installation tube 130. The control valve 80 is detachably connected between the other end of the installation tube 130 and the first connecting joint 70, and is used to control the connection or disconnection of the sampling tube 30 and the connecting tube 50. Therefore, on the one hand, when the sampling device 200 performs sampling operation, the control valve 80 is opened, thereby connecting the sampling tube 30 and the connecting tube 50. After the negative pressure source 40 is started, the material can be sucked into the sampler 20 under negative pressure. After the sampling device 200 completes sampling, the control valve 80 is closed to prevent air backflow and material leakage, while ensuring the pressure balance and sealing of the silo 100. On the other hand, the control valve 80 is detachably fixed on the mounting tube 130 provided on the silo cover 120, so that the material inlet 102 can still be sealed when the connecting tube 50 or the sampling tube 30 is removed from the silo 100. This achieves a multi-functional setting of the control valve 80, simplifies the structure, and reduces costs.

[0048] In this embodiment, the control valve 80 is configured as a manual valve, thereby facilitating the rapid opening and closing of the material inlet 102 and saving costs. Specifically, the manual valve is configured as a ball valve. In some embodiments, the control valve 80 can also be configured as an electric valve, thereby enabling the automatic opening and closing of the material inlet 102, improving the intelligence of the material handling device and reducing labor costs.

[0049] In some embodiments, the control valve 80 may also be disposed between the second connecting joint and the feed inlet 202. Thus, on the one hand, when the sampling device 200 performs a sampling operation, the control valve 80 is opened, thereby connecting the sampler 20 with the connecting pipe 50, and after the negative pressure source 40 is activated, the material can be drawn into the sampler 20 under negative pressure; after the sampling device 200 completes sampling, the control valve 80 is closed, thereby preventing air backflow and material leakage.

[0050] In some embodiments, an air blowing port 501 is provided at the end of the connecting pipe 50 near the sampler 20. The air blowing port 501 communicates with the inner cavity of the connecting pipe 50 and is used to communicate with an air blowing device. Thus, after the sampling device 200 completes sampling, the air blowing device blows away any remaining material inside the connecting pipe 50 and the sampling pipe 30 and returns it to the hopper 100, thereby ensuring the cleanliness of the sampler 20, preventing cross-contamination between different batches of material, and extending the service life of the sampling device 200. In other embodiments, the air blowing port 501 may also be provided at other locations on the connecting pipe 50, and this embodiment of the present invention does not specifically limit this. For example, the air blowing port 501 may be provided at the end of the connecting pipe 50 away from the sampler 20; or, the air blowing port 501 may be provided in the middle of the connecting pipe 50. The air blowing device may be, but is not limited to, a compressed air blowing device, a fan, or an air pump blowing device, etc.

[0051] In some embodiments, the sampling device 200 further includes a filter element 90. The filter element 90 is disposed within the collection chamber 201. The height of the filter element 90 and the negative pressure source 40 in the height direction X of the sampling device 200 is less than the height of the inlet 202 and the negative pressure source 40 in the height direction X of the sampling device 200. Therefore, on the one hand, the filter element 90 can filter the extracted airflow, removing impurities, dust, and other contaminants that may be carried in the airflow, preventing these contaminants from entering the interior of the negative pressure source 40, ensuring the normal operation of the negative pressure source 40 and extending its service life, as well as preventing the purity of the test samples taken by the sampling device 200 from being affected by contaminants; on the other hand, by positioning the filter element 90 between the negative pressure source 40 and the inlet 202 in the height direction X of the sampling device 200, the problem of material drawn by the negative pressure source 40 entering the filter element 90 and causing blockage of the filter element 90 is avoided, thus improving the reliability and smoothness of the normal operation of the negative pressure source 40.

[0052] Please refer to the following: Figure 1 and Figure 3 When no sampling is being performed in the silo 100, the sampling device 200 is independently installed with respect to the silo 100, and the connecting pipe 50 is separated from the first connecting joint 70, meaning the connecting pipe 50 and the sampling pipe 30 are not connected. At this time, the control valve 80 is closed. The sampling pipe 30 can be installed inside the silo 100; alternatively, the sampling pipe 30 can be installed separately from the silo 100. All internal components of the sampler 20 are in standby mode.

[0053] When material in silo 100 needs to be sampled, the sampler 20 is moved to the designated silo 100, and the connecting pipe 50 is tightly connected to the feed inlet 202 of the sampler via the second connector using clamp 23 to ensure a tight seal. Then, the control valve 80 is manually opened to activate the vacuum device. At this time, the air in the collection chamber 201 and the storage bottle begins to flow under negative pressure. Driven by the airflow, the material is conveyed upwards along the sampling pipe 30 installed on the silo 100 and sequentially enters the collection element 21 and the storage bottle 22 of the sampler 20 through the connecting pipe 50, completing the sample collection operation. Throughout the sampling process, because the sampling pipe 30 is made of plastic, the problem of metal debris generated from contact between metal parts and the material is avoided, effectively preventing the generation of magnetic foreign matter, ensuring the purity of the test sample, and improving the accuracy of material analysis.

[0054] After sampling is completed in silo 100, control valve 80 is closed to stop the vacuum device and cut off the airflow. Then, the blowing device is controlled to blow air into the blowing port 501. The airflow provided by the blowing device backflushs and cleans the inside of the connecting pipe 50 and the collecting component 21, blowing any residual material back into silo 100 and the sample bottle 22, thereby ensuring the cleanliness of the sampler 20 and preparing it for the next sampling. Finally, the clamp 23 is loosened, the sampler is removed from the outlet 203 of the collecting component 21, and sent to the laboratory or other testing location for appropriate quality testing and other operations.

[0055] The embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A sampling device (200), characterized in that, include: The sampler (20) is provided with a collection chamber (201) and a feed inlet (202). The collection chamber (201) is connected to the feed inlet (202) and is used to collect test samples from the silo (100). The silo (100) is provided with a storage chamber (101) and a feed outlet (102) connected to the storage chamber (101). A sampling tube (30) is detachably fixed to the sampling port (102) and extends into the storage chamber (101). The sampling tube (30) communicates between the collection chamber (201) and the storage chamber (101). The sampling tube (30) is configured as a non-metallic tube or the surface of the sampling tube (30) is provided with a non-metallic coating. A negative pressure source (40) is connected to the collection chamber (201).

2. The sampling device (200) as described in claim 1, characterized in that, The sampler (20) includes a collection element (21) and a sample storage bottle (22). In the height direction (X) of the sampling device (200), one end of the collection element (21) is detachably and sealed to the sample storage bottle (22), and the other end of the collection element (21) is connected to the negative pressure source (40). The side wall of the collection element (21) is provided with the inlet (202), and the bottom of the collection element (21) is provided with the outlet (203).

3. The sampling device (200) as described in claim 2, characterized in that, The collecting component (21) includes an installation part (211) and a collecting part (212). The installation part (211) is connected between the collecting part (212) and the negative pressure source (40). The collecting part (212) has an inlet (202) at one end near the installation part (211) and an outlet (203) at the other end away from the installation part (211). The cross-sectional area of ​​the collecting part (212) gradually decreases from the inlet (202) to the outlet (203).

4. The sampling device (200) as described in claim 1, characterized in that, The sampling device (200) further includes a connecting tube (50) and a first connecting joint (70). The two ends of the connecting tube (50) are respectively connected between the sampling tube (30) and the collection chamber (201). The first connecting joint (70) is fixedly disposed relative to the sampling tube (30) and detachably connected to the connecting tube (50).

5. The sampling device (200) as described in claim 4, characterized in that, The sampling device (200) further includes a second connecting connector, which is fixedly connected to the inlet (202) and detachably connected to the end of the connecting tube (50) away from the first connecting connector (70).

6. The sampling device (200) as described in claim 4, characterized in that, The connecting pipe (50) is configured as a flexible connecting pipe, which includes a rubber pipe, a plastic pipe or a metal corrugated pipe.

7. The sampling device (200) as described in claim 4, characterized in that, The sampling device (200) further includes a control valve (80). The hopper (100) includes a hopper body (110) and a hopper cover (120). The hopper cover (120) is connected to the hopper body (110) to form the storage chamber (101). The hopper cover (120) is provided with the material inlet (102), and an installation pipe (130) is provided at the position of the material inlet (102). The sampling pipe (30) is detachably connected to one end of the installation pipe (130). The control valve (80) is detachably connected between the other end of the installation pipe (130) and the first connecting joint (70), and is used to control the connection or disconnection of the sampling pipe (30) and the connecting pipe (50).

8. The sampling device (200) as described in claim 4, characterized in that, The connecting tube (50) is provided with an air blowing port (501) at the end near the sampler (20). The air blowing port (501) is connected to the inner cavity of the connecting tube (50) and is used to communicate with the air blowing device.

9. The sampling device (200) as described in claim 8, characterized in that, The sampling device (200) further includes a filter element (90), which is disposed in the collection chamber (201). The height of the filter element (90) and the negative pressure source (40) in the height direction (X) of the sampling device (200) is less than the height of the inlet (202) and the negative pressure source (40) in the height direction (X) of the sampling device (200).

10. A sampling system (1000), characterized in that, It includes a hopper (100) and a sampling device (200) as described in any one of claims 1-9, the sampling device (200) being used to collect the test sample from the hopper (100).

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