Belt sampler continuous sampling automatic packaging structure

Abstract

The utility model discloses a kind of continuous sampling automatic packaging structures of belt sampler, it is related to coal sampling technical field, and wherein, continuous sampling automatic packaging structure of belt sampler includes automatic bag feeder box, negative pressure holding device, roll pressure sealing device and belt sampler control cabinet, automatic bag feeder box includes box and the multiple self-sealing sample bag of being set in box, negative pressure holding device is used to move from box to the below of belt sampler blanking port of self-sealing sample bag.The technical scheme of the utility model is by using self-sealing sample bag with independent numbering cooperation automatic bag feeder box, negative pressure holding device and roll pressure sealing device, the continuous automatic bag feeding and packaging of coal sample are realized, not only can effectively distinguish different vehicle batch of coal sample by numbering, ensure that sample can be traced, and manual coal sample circulation cumbersome operation and error risk are saved, simultaneously, coal sample moisture evaporation is prevented by physical compression sealing, sampling accuracy and working efficiency are significantly improved.

Description

Technical Field

[0001] This utility model relates to the field of coal sampling technology, and in particular to an automatic packaging structure for continuous sampling of a belt sampler. Background Technology

[0002] In open-pit coal mine surface production systems, belt samplers are key equipment for achieving automatic sampling of the entire coal flow cross-section and are widely used in coal quality testing and off-site measurement. However, in actual train loading operations, the limited number of sampling bins makes it difficult to meet the needs of multiple trains operating continuously during peak loading seasons. For situations where multiple trains share coal samples, manual handling of sample transfer and numbering is still required, which is cumbersome and carries the risk of numbering errors, leading to chaotic coal sample management. Furthermore, traditional sampling methods are prone to moisture evaporation during sample preservation, affecting the accuracy and representativeness of test results. Utility Model Content

[0003] The main purpose of this invention is to propose an automatic packaging structure for continuous sampling of belt samplers, which aims to solve the problems of chaotic sample management and moisture volatilization in coal samples that exist in traditional manual operation.

[0004] To achieve the above objectives, this utility model proposes an automatic packaging structure for continuous sampling of a belt sampling machine, which includes:

[0005] An automatic bag feeder includes a box body and multiple self-sealing sample bags set inside the box body. Each self-sealing sample bag is assigned a unique number and has a receiving cavity for holding the sample. The opening of the receiving cavity faces upward, and a first self-sealing strip and a second self-sealing strip are respectively set on the opposite sides of the cavity wall.

[0006] The negative pressure suction device is used to move the self-sealing sample bag from the box to below the discharge port of the belt sampler, so that the sample can move from the discharge port of the belt sampler through the opening into the receiving cavity.

[0007] The roller sealing device includes a first clamping roller and a second clamping roller, both of which are arranged at intervals in the horizontal direction. The space between the first clamping roller and the second clamping roller is used for the self-sealing sample bag to pass through. The first clamping roller and the second clamping roller are used to squeeze the self-sealing sample bag so that the first self-sealing strip and the second self-sealing strip abut against each other to seal the opening.

[0008] The belt sampling machine control cabinet, negative pressure suction device, roller sealing device, and train loading conveyor belt are all electrically connected to the belt sampling machine control cabinet.

[0009] In one embodiment, the housing includes a bottom plate, side plates, and baffles connected to each other. The bottom plate and side plates enclose a receiving groove for accommodating multiple self-sealing sample bags. An inlet is provided above the receiving groove, and an outlet is provided on the side of the receiving groove near the negative pressure suction device. The two opposite ends of the bottom plate are a first end and a second end, respectively. The second end is located near the outlet, and the first end is higher than the second end, so that the self-sealing sample bags can slide from the first end to the second end by gravity. A baffle is provided at the second end, which can abut against the self-sealing sample bags to restrict the self-sealing sample bags from sliding out of the second end.

[0010] In one embodiment, the automatic bag dispenser further includes a pushing mechanism disposed at the first end, which is used to push the self-sealing sample bag from the first end to the second end.

[0011] In one embodiment, the negative pressure suction device includes a negative pressure fan, a rotating suction assembly, a fixed suction assembly, and a support mechanism. The negative pressure fan is connected to the support mechanism. Both the rotating suction assembly and the fixed suction assembly are connected to the negative pressure fan. The fixed suction assembly is located below the material inlet of the belt sampler. The two sides of the self-sealing sample bag are respectively designated as a first bag wall and a second bag wall. The first bag wall and / or the second bag wall are numbered. The first bag wall and the second bag wall are connected to form a receiving cavity. A first self-sealing strip is provided on the side of the first bag wall facing the second bag wall, and a second self-sealing strip is provided on the side of the second bag wall facing the first bag wall. The negative pressure fan is electrically connected to the control cabinet of the belt sampler. The rotating suction assembly is rotatably mounted on the support mechanism. The rotating suction assembly has a bag-taking position and a sampling position, and the rotating suction assembly can reciprocate between the bag-taking position and the sampling position.

[0012] The rotating suction assembly is located at the bag retrieval position. The negative pressure fan can provide negative pressure to the rotating suction assembly to adsorb the first bag wall, so that the self-sealing sample bag can be moved out of the outlet.

[0013] The rotating suction assembly is located at the sampling position, and the negative pressure fan can provide negative pressure to the fixed suction assembly to adsorb the second bag wall, so that the first self-sealing strip and the second self-sealing strip separate to open the opening.

[0014] In one embodiment, the rotating suction assembly includes a first negative pressure suction arm and a first suction head. Both the negative pressure fan and the first suction head are connected to the first negative pressure suction arm to form a first negative pressure channel. The negative pressure fan can provide negative pressure to the first suction head through the first negative pressure channel to adsorb the first bag wall. The fixed suction assembly includes a second negative pressure suction arm and a second suction head. Both the negative pressure fan and the second suction head are connected to the second negative pressure suction arm to form a second negative pressure channel. The negative pressure fan can provide negative pressure to the second suction head through the second negative pressure channel to adsorb the second bag wall. The second suction head is located below the material discharge port of the belt sampler. The first negative pressure suction arm is rotatably mounted on the support mechanism. The first suction head has a bag-taking position and a sampling position. The first negative pressure suction arm can drive the first suction head to reciprocate between the bag-taking position and the sampling position.

[0015] In one embodiment, the side of the first suction head away from the first negative pressure suction arm is a first arc-shaped surface, which extends away from the first negative pressure suction arm and is used to adsorb the first bag wall.

[0016] And / or,

[0017] The side of the second suction head away from the second negative pressure suction arm is the second arc-shaped surface. The second arc-shaped surface extends away from the second negative pressure suction arm and is used to adsorb the second bag wall.

[0018] In one embodiment, the support mechanism includes a first driving member and a support frame. The first negative pressure suction arm includes a suction arm body and a support rod. The negative pressure fan and the first suction head are both connected to the suction arm body to form a first negative pressure channel. The suction arm body is connected to the support rod. The first driving member is connected to the support frame. The support rod is rotatably mounted on the support frame. The first driving member is drively connected to the support rod so that the first driving member can drive the suction arm body to rotate relative to the support frame through the support rod. The first driving member is electrically connected to the belt sampler control cabinet.

[0019] In one embodiment, the continuous sampling automatic packaging structure of the belt sampler further includes a sample conveying mechanism located below the material inlet of the belt sampler. The sample conveying mechanism is used to carry the self-sealing sample bag containing the sample and convey the self-sealing sample bag to the roller sealing device. The sample conveying mechanism is electrically connected to the control cabinet of the belt sampler.

[0020] In one embodiment, the sample conveying mechanism includes a second drive member, a sample conveying belt, and guardrails disposed opposite to each other on both sides of the belt. The guardrails extend along the length of the sample conveying belt. The second drive member is drivenly connected to the sample conveying belt so that the second drive member can drive the sample conveying belt to rotate. The sample conveying belt is used to carry the self-sealing sample bag containing the sample and convey the self-sealing sample bag to the roller sealing device. The guardrails are used to prevent the self-sealing sample bag from tipping over. The second drive member is electrically connected to the belt sampling machine control cabinet.

[0021] In one embodiment, the continuous sampling automatic packaging structure of the belt sampler also includes a sample storage box. The sample storage box and the negative pressure suction device are located on both sides of the roller sealing device. The sample storage box is located below the output end of the sample conveying mechanism. The sample conveying mechanism is used to convey the self-sealing sample bag with the opening sealed to the sample storage box.

[0022] And / or,

[0023] The outer wall of the first clamping roller is provided with a first rubber sleeve;

[0024] And / or,

[0025] The outer wall of the second pinch roller is provided with a second rubber sleeve.

[0026] In this embodiment of the utility model, the sample is a coal sample. The continuous sampling automatic sealing structure of the belt sampler is based on the existing belt sampler. It abandons the traditional design of fixing 6 or 8 sampling barrels on the sampler wheel and replaces them with multiple self-sealing sample bags with independent numbers. Each self-sealing sample bag has a receiving cavity for holding the coal sample. The opening of the receiving cavity is facing upward and in an open state. The two sides of the opening of the receiving cavity are respectively provided with a first self-sealing strip and a second self-sealing strip, which facilitates subsequent automatic sealing. Moreover, the number of each self-sealing sample bag is unique and can correspond to a specific loading train or sampling period, which facilitates the traceability management of the sample.

[0027] In addition, the continuous sampling automatic packaging structure of this belt sampler is an automation upgrade for the coal sample collection module. By adding a host computer and using a sampling control program, it realizes the interlocking start and stop control of the train loading conveyor belt and the belt sampler. The host computer is integrated into the control cabinet of the belt sampler. Every time the train loading conveyor belt starts loading, it sends an initial sampling signal to the negative pressure suction device and the roller sealing device, triggering a new round of bag feeding, material receiving, and sealing operations, thereby realizing single-train sampling during train loading. This effectively solves the problems of not being able to distinguish train batches and insufficient sample representativeness in the traditional sampling mode, and improves the accuracy and representativeness of coal sampling transported by rail.

[0028] When the train loading conveyor belt starts loading, the belt sampler control cabinet activates the negative pressure suction device, which draws an empty self-sealing sample bag from the automatic bag feeder and moves it directly below the conveyor belt sampler's discharge port, ensuring the bag's opening faces the port to receive the coal sample. At this point, the belt sampler has completed full-section interception, crushing, and reduction of the coal flow from the train loading conveyor belt. The processed coal sample then falls through the discharge port into the self-sealing sample bag, completing the receiving process.

[0029] After the train loading conveyor belt is loaded, the belt sampling machine control cabinet controls the negative pressure suction device to close. The negative pressure suction device stops generating negative pressure, and the self-sealing sample bag detaches and falls under its own weight. It is then transferred to the roller sealing device manually or mechanically for subsequent sealing operations.

[0030] The roller sealing device consists of a first clamping roller and a second clamping roller arranged at intervals in the horizontal direction. Either the first clamping roller or the second clamping roller is the active clamping roller, and the other is the driven clamping roller. When the self-sealing sample bag passes through it, the active clamping roller rotates to drive the self-sealing sample bag to move. The self-sealing sample bag drives the driven clamping roller to rotate synchronously through friction, thereby causing the first self-sealing strip and the second self-sealing strip to squeeze and close each other, realizing physical compression sealing. No heat fusion or tape is required, which effectively prevents the evaporation of moisture from the coal sample and maintains the original state of the sample.

[0031] When the next train begins loading, the negative pressure suction device receives the sampling signal again from the belt sampling machine control cabinet, and picks up a new self-sealing sample bag from the automatic bag dispenser, repeating the above process. The belt sampling machine control cabinet is responsible for coordinating the timing of the actions of each component to achieve fully automated operation.

[0032] This structure not only enables continuous automatic bagging and sealing of coal samples, meeting the sampling needs of multiple trains continuously loading during peak seasons of railway transportation, but also ensures the traceability of samples through numbering management. At the same time, it eliminates the tedious operation and potential error risk of manual collection, transportation, and registration of coal samples, significantly improving the accuracy, efficiency, and representativeness of sampling and testing.

[0033] The technical solution of this utility model achieves continuous automatic bag feeding and sealing of coal samples by using self-sealing sample bags with independent numbers in conjunction with an automatic bag feeding box, a negative pressure suction device, and a roller sealing device. This not only effectively distinguishes coal samples from different vehicle batches through the numbering, ensuring sample traceability, but also eliminates the tedious operation and error risk of manual coal sample transfer. At the same time, the physical compression sealing prevents the evaporation of moisture from the coal sample, significantly improving the accuracy and efficiency of sampling and testing. Attached Figure Description

[0034] 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 the structures shown in these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of an embodiment of the automatic packaging structure for continuous sampling of the belt sampling machine of this utility model;

[0036] Figure 2 This is a schematic diagram of another perspective of an embodiment of the automatic packaging structure for continuous sampling of the belt sampling machine of this utility model;

[0037] Figure 3 This is a partial structural diagram of an embodiment of the automatic packaging structure for continuous sampling of the belt sampling machine of this utility model.

[0038] Explanation of icon numbers:

[0039] 100. Continuous sampling automatic packaging structure of belt sampler; 1. Automatic bag feeding box; 11. Box body; 111. Bottom plate; 1111. First end; 1112. Second end; 112. Side plate; 113. Baffle; 114. Receiving groove; 1141. Inlet; 1142. Outlet; 12. Self-sealing sample bag; 121. First bag wall; 1211. First self-sealing strip; 122. Second bag wall; 1221. Second self-sealing strip; 123. Numbering; 124. Receiving cavity; 1241. Opening; 13. Pushing mechanism; 2. Negative pressure suction device; 21. Negative pressure fan; 22. Rotating suction assembly; 221. First negative pressure suction arm; 2211. Suction... 2212. Arm body; 2212. Support rod; 222. First suction head; 2221. Bag retrieval position; 2222. Sampling position; 2223. First arc-shaped surface; 23. Fixed suction assembly; 231. Second negative pressure suction arm; 232. Second suction head; 2321. Second arc-shaped surface; 24. Support mechanism; 241. First driving component; 242. Support frame; 3. Roller sealing device; 31. First clamping roller; 311. First rubber sleeve; 32. Second clamping roller; 321. Second rubber sleeve; 4. Belt sampling machine control cabinet; 5. Sample conveying mechanism; 51. Second driving component; 52. Sample conveying belt machine; 53. Guardrail; 6. Sample storage box;

[0040] 200. Belt sampling machine discharge port.

[0041] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0042] 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.

[0043] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, and back), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0044] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0045] In open-pit coal mine surface production systems, belt samplers are key equipment for achieving automatic sampling of the entire coal flow cross-section and are widely used in coal quality testing and off-site measurement. However, in actual train loading operations, the limited number of sampling bins makes it difficult to meet the needs of multiple trains operating continuously during peak loading seasons. For situations where multiple trains share coal samples, manual handling of sample transfer and numbering is still required, which is cumbersome and carries the risk of numbering errors, leading to chaotic coal sample management. Furthermore, traditional sampling methods are prone to moisture evaporation during sample preservation, affecting the accuracy and representativeness of test results.

[0046] After careful investigation, the applicant discovered that the root cause of the aforementioned problems lies in the dual limitations of the existing belt sampler's control system and sampling structure design. Firstly, the sampler can only automatically rotate the sampling bins at a preset fixed frequency. However, the time it takes for a train to be fully loaded is approximately 30 minutes. This cycle is mismatched with the sampling frequency and the frequency of bin rotation, resulting in coal samples from multiple loading cycles being collected into the same sampling bin, failing to achieve precise matching of sampling per train. Secondly, in terms of physical structure, the sampler typically uses a turntable mechanism with 6 or 8 fixed sampling bins. After a set number of samplings, a single sampling bin is programmed to rotate to the next position. This design limits the number of available sampling containers, making it impossible to support long-term, high-frequency continuous loading tasks. More significantly, when multiple trains share a sampling bin, the already sampled coal samples must be manually removed from the bins and sequentially transferred, numbered, and stored. This process is not only labor-intensive but also highly susceptible to human error, leading to sample sequence errors or labeling mistakes. Furthermore, traditional sampling containers have poor sealing, leaving coal samples exposed to open environments for extended periods, leading to easy moisture evaporation and directly impacting the accuracy of tests for key indicators such as calorific value. Therefore, existing structures have significant shortcomings in terms of automation, sampling independence, sample traceability, and preservation integrity, necessitating an optimized structural solution that enables single-row identification, continuous automatic packaging, and prevention of sample deterioration.

[0047] The main purpose of this invention is to propose an automatic packaging structure for continuous sampling of belt samplers to solve the problems of chaotic sample management and moisture volatilization in coal samples that exist in traditional manual operation.

[0048] Please see Figure 1 and Figure 2In one embodiment of this utility model, the continuous sampling automatic packaging structure 100 of the belt sampler includes an automatic bag feeding box 1, a negative pressure suction device 2, a roller sealing device 3, and a belt sampler control cabinet 4. The automatic bag feeding box 1 includes a box body 11 and multiple self-sealing sample bags 12 disposed within the box body 11. Each self-sealing sample bag 12 is assigned a different number 123. Each self-sealing sample bag 12 is provided with a receiving cavity 124 for containing samples. The opening 1241 of the receiving cavity 124 faces upward. A first self-sealing strip 1211 and a second self-sealing strip 1221 are respectively provided on opposite sides of the cavity wall of the receiving cavity 124. The negative pressure suction device 2 is used to lift the self-sealing sample bag 12 from the box body. 11 is moved below the feed inlet 200 of the belt sampler so that the sample can move from the feed inlet 200 of the belt sampler through the opening 1241 to the receiving cavity 124; the roller sealing device 3 includes a first clamping roller 31 and a second clamping roller 32, which are arranged at intervals in the horizontal direction. The space between the first clamping roller 31 and the second clamping roller 32 is used for the self-sealing sample bag 12 to pass through. The first clamping roller 31 and the second clamping roller 32 are used to squeeze the self-sealing sample bag 12 so that the first self-sealing strip 1211 and the second self-sealing strip 1221 abut against each other to seal the opening 1241; the negative pressure suction device 2, the roller sealing device 3 and the train loading conveyor belt are all electrically connected to the belt sampler control cabinet 4.

[0049] In this embodiment of the utility model, the sample is a coal sample. The continuous sampling automatic sealing structure 100 of the belt sampler is based on the existing belt sampler. It abandons the traditional design of fixing 6 or 8 sampling barrels on the sampler wheel and replaces them with multiple self-sealing sample bags 12 with independent numbers 123. Each self-sealing sample bag 12 is provided with a receiving cavity 124 for holding the coal sample. The opening 1241 of the receiving cavity 124 faces upward and is in an open state. The two sides of the opening 1241 of the receiving cavity 124 are respectively provided with a first self-sealing strip 1211 and a second self-sealing strip 1221, which facilitates subsequent automatic sealing. Moreover, the number 123 of each self-sealing sample bag 12 is unique and can correspond to a specific loading train or sampling period, which facilitates the traceability management of the sample. In addition, the continuous sampling automatic packaging structure 100 of the belt sampler is an automation upgrade for the coal sample collection module. By adding a host computer and using a sampling control program, the interlocking start and stop control of the train loading conveyor belt and the belt sampler is realized. The host computer is integrated into the belt sampler control cabinet 4. Each time the train loading conveyor belt starts loading, it sends an initial sampling signal to the negative pressure suction device 2 and the roller sealing device 3, triggering a new round of bag feeding, material receiving, and sealing operations. This enables single-train sampling during train loading, effectively solving the problems of not being able to distinguish train batches and insufficient sample representativeness in the traditional sampling mode, and improving the accuracy and representativeness of coal sampling for railway transportation. When the train loading conveyor belt starts loading, the belt sampling machine control cabinet 4 controls the negative pressure suction device 2 to start, causing the negative pressure suction device 2 to suck up an empty self-sealing sample bag 12 from the automatic bag feeding box 1 and move it directly below the conveyor belt sampling machine's discharge port 200, so that the opening 1241 of the self-sealing sample bag 12 faces the conveyor belt sampling machine's discharge port 200 to receive the coal sample. At this time, the belt sampling machine has completed the full-section interception, crushing, and reduction of the coal flow from the train loading conveyor belt. The processed coal sample falls into the self-sealing sample bag 12 through the conveyor belt sampling machine's discharge port 200 to complete the receiving. After the train loading conveyor belt finishes loading, the belt sampling machine control cabinet 4 controls the negative pressure suction device 2 to shut down. The negative pressure suction device 2 stops generating negative pressure, and the self-sealing sample bag 12 detaches and falls under its own weight. It is then transferred manually or mechanically to the roller sealing device 3 for subsequent sealing operations. The roller sealing device 3 is composed of a first clamping roller 31 and a second clamping roller 32 arranged at intervals in the horizontal direction. Either the first clamping roller 31 or the second clamping roller 32 is the active clamping roller, and the other is the driven clamping roller. When the self-sealing sample bag 12 passes through it, the active clamping roller rotates to drive the self-sealing sample bag 12 to move. The self-sealing sample bag 12 drives the driven clamping roller to rotate synchronously through friction, so that the first self-sealing strip 1211 and the second self-sealing strip 1221 are squeezed and closed with each other, realizing physical compression sealing. No heat melting or tape is required, which effectively prevents the evaporation of moisture from the coal sample and maintains the original state of the sample.When the next train begins loading, the negative pressure suction device 2 receives the sampling signal transmitted from the belt sampling machine control cabinet 4 again, and picks up a new self-sealing sample bag 12 from the automatic bag feeding box 1, repeating the above process. The belt sampling machine control cabinet 4 is responsible for coordinating the timing of the actions of each component to achieve fully automated operation. This structure not only realizes the continuous automatic bag feeding and sealing of coal samples, meeting the sampling needs of multiple trains loading continuously during the peak season of railway transportation, but also ensures the traceability of samples through numbering 123. At the same time, it eliminates the tedious operation and potential error risk of manual collection, transfer, and registration of coal samples, significantly improving the accuracy, efficiency, and representativeness of sampling and testing.

[0050] The technical solution of this utility model achieves continuous automatic bag feeding and sealing of coal samples by using self-sealing sample bags 12 with independent numbers 123 in conjunction with an automatic bag feeding box 1, a negative pressure suction device 2, and a roller sealing device 3. This not only effectively distinguishes coal samples from different vehicle batches through the numbers 123, ensuring sample traceability, but also eliminates the tedious operation and error risk of manual coal sample transfer. At the same time, the physical compression sealing prevents the evaporation of moisture from the coal sample, significantly improving the accuracy and efficiency of sampling and testing.

[0051] Please see Figure 1 and Figure 3In one embodiment, the housing 11 includes a bottom plate 111, side plates 112, and baffles 113 connected to each other. The bottom plate 111 and side plates 112 enclose a receiving groove 114 for accommodating multiple self-sealing sample bags 12. An inlet 1141 is provided above the receiving groove 114, and an outlet 1142 is provided on the side of the receiving groove 114 near the negative pressure suction device 2. The two opposite ends of the bottom plate 111 are a first end 1111 and a second end 1112, respectively. The second end 1112 is located near the outlet 1142. The first end 1111 is higher than the second end 1112, so that the self-sealing sample bag 12 can slide from the first end 1111 to the second end 1112 under gravity. The second end 1112 is provided with a baffle 113, which can abut against the self-sealing sample bag 12 to restrict the self-sealing sample bag 12 from sliding out of the second end 1112. Specifically, the inlet 1141 of the receiving groove 114 facilitates the replenishment and filling of the self-sealing sample bag 12, and the outlet 1142 of the receiving groove 114 serves as the channel for the self-sealing sample bag 12 to be adsorbed and taken out, ensuring accurate docking of the bag taking action. The bottom plate 111 is installed at an angle, so that each self-sealing sample bag 12 can automatically slide from the first end 1111 to the second end 1112 under the action of gravity, realizing continuous replenishment. The second end 1112 is located near the outlet 1142 and is equipped with a baffle 113. This baffle 113 can abut against the foremost self-sealing sample bag 12, restricting its further sliding out, thereby preventing the stacked self-sealing sample bags 12 from sliding out of the outlet 1142 as a whole, ensuring that only one self-sealing sample bag 12 is in the bag-picking station at a time. This structure achieves the self-weight sliding material replenishment of the self-sealing sample bag 12 through the inclined base plate 111. Combined with the limiting design of the baffle 113 and the directional design of the outlet 1142, it not only simplifies the structure and reduces energy consumption, but also effectively ensures the stability and reliability of the bag-picking process, avoiding the problems of multiple bags overlapping or bag-picking failure. It provides good structural support for the negative pressure suction device 2 to continuously and efficiently acquire sample bags, improving the automation level and operational continuity of the entire automatic sealing process.

[0052] Please see Figure 1 and Figure 3In one embodiment, the automatic bag dispenser 1 further includes a pushing mechanism 13, which is disposed at the first end 1111. The pushing mechanism 13 is used to push the self-sealing sample bag 12 from the first end 1111 to the second end 1112. Specifically, the pushing mechanism 13 is disposed at the first end 1111 of the base plate 111 and is used to assist the self-sealing sample bag 12 in moving along the base plate 111 to the second end 1112 when it is stored. The base plate 111 is inclined, with the first end 1111 higher than the second end 1112, so that the self-sealing sample bag 12 can slide from the first end 1111 to the second end 1112 under normal circumstances by gravity, achieving automatic positioning. However, in actual operation, due to factors such as surface friction of the self-sealing sample bag 12, tight stacking, or environmental humidity, subsequent self-sealing sample bags 12 may not be able to slide completely to the outlet 1142, causing the bag retrieval position 2221 to be offset or bag retrieval failure. To this end, a pushing mechanism 13 is configured at the first end 1111. When it is detected that the self-sealing sample bag 12 is not in place or after one bag retrieval is completed, the pushing mechanism 13 is activated and applies a forward thrust to push the remaining self-sealing sample bag 12 a certain distance, ensuring that the next self-sealing sample bag 12 accurately arrives at the bag retrieval station of the second end 1112. By setting up the pushing mechanism 13, not only is the inaccurate positioning problem that may exist if gravity sliding is relied upon alone, but the reliability and continuity of the supply of self-sealing sample bags 12 are also significantly improved, ensuring that each bag retrieval operation is performed in the correct position, avoiding abnormal situations of empty suction, thereby ensuring the stable and efficient operation of the entire automatic sealing process. The pushing mechanism 13 can adopt existing pneumatic structures, electric push rods, or servo-driven push plates, etc., with controllable action and rapid response. This embodiment does not limit the specific form of the mechanism.

[0053] Please see Figures 1 to 3In one embodiment, the negative pressure suction device 2 includes a negative pressure fan 21, a rotating suction assembly 22, a fixed suction assembly 23, and a support mechanism 24. The negative pressure fan 21 is connected to the support mechanism 24. Both the rotating suction assembly 22 and the fixed suction assembly 23 are connected to the negative pressure fan 21. The fixed suction assembly 23 is located below the discharge port 200 of the belt sampler. The two opposite sides of the self-sealing sample bag 12 are respectively provided as a first bag wall 121 and a second bag wall 122. The first bag wall 121 and / or the second bag wall 122 are provided with numbers 123. The first bag wall 121 and the second bag wall 122 are connected to form a receiving cavity 124. A first self-sealing strip 1211 is provided on the side of the first bag wall 121 facing the second bag wall 122, and a second self-sealing strip 1221 is provided on the side of the second bag wall 122 facing the first bag wall 121. The negative pressure fan 21 is electrically connected to the belt sampler control cabinet 4. The holding component 22 is rotatably mounted on the support mechanism 24. The rotating suction component 22 has a bag-taking position 2221 and a sampling position 2222. The rotating suction component 22 can reciprocate between the bag-taking position 2221 and the sampling position 2222. When the rotating suction component 22 is located at the bag-taking position 2221, the negative pressure fan 21 can provide negative pressure to the rotating suction component 22 to adsorb the first bag wall 121, so that the self-sealing sample bag 12 can be moved out of the outlet 1142. When the rotating suction component 22 is located at the sampling position 2222, the negative pressure fan 21 can provide negative pressure to the fixed suction component 23 to adsorb the second bag wall 122, so that the first self-sealing strip 1211 and the second self-sealing strip 1221 separate to open the opening 1241. Specifically, the first bag wall 121 of the self-sealing sample bag 12 is provided with a first self-sealing strip 1211, and the second bag wall 122 is provided with a second self-sealing strip 1221. The two can abut against each other to achieve self-sealing. The negative pressure fan 21 is electrically connected to the belt sampler control cabinet 4 to achieve remote start / stop and logic control. Both the rotating suction assembly 22 and the fixed suction assembly 23 are connected to the negative pressure fan 21 to receive negative pressure airflow for adsorption. The fixed suction assembly 23 is located below the material discharge port 200 of the belt sampler and is in a fixed position. The rotating suction assembly 22 is rotatably mounted on the support mechanism 24 and has two working positions: a bag-taking position 2221 and a sampling position 2222. It can rotate back and forth between the two positions. When the rotating suction assembly 22 is in the bag-taking position 2221, the negative pressure fan 21 provides negative pressure to it, causing it to adsorb the first bag wall 121 of the self-sealing sample bag 12, thereby sucking the self-sealing sample bag 12 out of the outlet 1142 of the automatic bag box 1 and removing it from the stacked state. Subsequently, the rotating suction assembly 22 drives the self-sealing sample bag 12 to rotate to the sampling position 2222.When the rotating suction assembly 22 reaches the sampling position 2222, the negative pressure fan 21 supplies air to the fixed suction assembly 23, causing it to adsorb the second bag wall 122 of the sample bag. At this time, the first bag wall 121 is adsorbed by the rotating suction assembly 22, and the second bag wall 122 is adsorbed by the fixed suction assembly 23. The two bag walls are stretched in opposite directions, causing the first self-sealing strip 1211 and the second self-sealing strip 1221 to be forced to separate, thereby completely opening the opening 1241 of the receiving cavity 124, creating an unobstructed channel for the coal sample to fall in. After the crushed and shrunk coal sample has completely fallen into the bag through the discharge port, the negative pressure fan 21 stops supplying air, the adsorption force on both sides disappears, and the self-sealed sample bag 12 detaches under its own weight and enters the next process. This structure, through the coordinated operation of the rotating suction component 22 and the fixed suction component 23, combined with the timing control of the negative pressure fan 21, achieves integrated operation of automatic bag picking, positioning and receiving, and forced bag opening. This effectively avoids the problem of incomplete opening 1241 caused by self-sealing strip adhesion, ensuring smooth sample bagging and significantly improving the automation, reliability, and efficiency of sampling and packaging. Furthermore, in this embodiment, the self-sealing sample bag 12 can be made of rigid kraft paper, allowing for self-support and upright placement. It also features a specially widened first self-sealing strip 1211 and a second self-sealing strip 1221 to enhance the self-sealing reliability and sealing effect of the self-sealing sample bag 12.

[0054] Please see Figures 1 to 3In one embodiment, the rotating suction assembly 22 includes a first negative pressure suction arm 221 and a first suction head 222. Both the negative pressure fan 21 and the first suction head 222 are connected to the first negative pressure suction arm 221 to form a first negative pressure channel (not shown in the figure). The negative pressure fan 21 can provide negative pressure to the first suction head 222 through the first negative pressure channel to adsorb the first bag wall 121. The fixed suction assembly 23 includes a second negative pressure suction arm 231 and a second suction head 232. Both the negative pressure fan 21 and the second suction head 232 are connected to the second negative pressure suction arm 231 to form a second negative pressure channel (not shown in the figure). 21 can provide negative pressure to the second suction head 232 through the second negative pressure channel to adsorb the second bag wall 122. The second suction head 232 is located below the material outlet 200 of the belt sampler. The first negative pressure suction arm 221 is rotatably mounted on the support mechanism 24. The first suction head 222 has a bag taking position 2221 and a sampling position 2222. The first negative pressure suction arm 221 can drive the first suction head 222 to reciprocate between the bag taking position 2221 and the sampling position 2222. Specifically, the second suction head 232 is located below the material outlet 200 of the belt sampler and its position is fixed to ensure the stability of the receiving station. The first negative pressure suction arm 221 is rotatably mounted on the support mechanism 24. The first suction head 222 has a bag-taking position 2221 and a sampling position 2222. When the first suction head 222 is in the bag-taking position 2221, the negative pressure fan 21 provides negative pressure to it through the first negative pressure channel, adsorbing the first bag wall 121 of the self-sealing sample bag 12 and moving the self-sealing sample bag 12 out from the outlet 1142 of the automatic bag box 1. Subsequently, the first negative pressure suction arm 221 drives the first suction head 222 to rotate to the sampling position 2222. The negative pressure fan 21 supplies air to the second suction head 232 through the second negative pressure channel, so that it adsorbs the second bag wall 122 of the self-sealing sample bag 12. At this point, the first bag wall 121 is adsorbed by the first suction head 222, and the second bag wall 122 is adsorbed by the second suction head 232. The two bag walls are stretched under the opposing adsorption force, causing the first self-sealing strip 1211 and the second self-sealing strip 1221 to separate, thus completely opening the opening 1241 of the receiving cavity 124, creating an unobstructed channel for the coal sample to fall smoothly. After the sample is filled, the negative pressure fan 21 stops supplying air, the negative pressure in the two negative pressure channels disappears, and the first suction head 222 and the second suction head 232 simultaneously release the sample bag. The sample bag detaches under its own weight and enters the subsequent process. This structure, through an independent negative pressure channel design, achieves orderly switching and coordinated control of bag retrieval and opening functions, effectively solving the problem of incomplete opening 1241 caused by self-sealing bags sticking or rebounding, ensuring the reliability and sealing of the receiving process, and significantly improving the automation level and operating efficiency of sampling and packaging.

[0055] Please see Figure 1In one embodiment, the side of the first suction head 222 away from the first negative pressure suction arm 221 is a first arc-shaped surface 2223, which extends away from the first negative pressure suction arm 221 and is used to adsorb the first bag wall 121; and / or, the side of the second suction head 232 away from the second negative pressure suction arm 231 is a second arc-shaped surface 2321, which extends away from the second negative pressure suction arm 231 and is used to adsorb the second bag wall 122; specifically, both the first arc-shaped surface 2223 and the second arc-shaped surface 2321 are curved structures, which can better fit the surface morphology of the self-sealing sample bag 12 in the stress-expanded state and improve the sealing and stability during the adsorption process. When the first suction head 222 rotates the self-sealing sample bag 12 to the sampling position 2222, the first arc-shaped surface 2223 and the second arc-shaped surface 2321 respectively adsorb the first bag wall 121 and the second bag wall 122. Under the action of reverse tension, the first self-sealing strip 1211 and the second self-sealing strip 1221 are forcibly separated, thereby completely opening the opening 1241 of the receiving cavity 124, ensuring that the coal sample falls in smoothly. The design of the first arc-shaped surface 2223 and the second arc-shaped surface 2321 effectively reduces edge leakage during the adsorption process, improves the negative pressure utilization efficiency, and avoids local stress concentration, bag wrinkling, or desorption problems caused by planar contact. This structure, through optional single-sided or double-sided arc-shaped surface configuration, not only ensures the reliability of bag opening adsorption, but also provides diversified design implementation paths, enhances the adaptability of the equipment to different bag types and working conditions, and improves the stability and success rate of the automatic sealing process. The first suction head 222 can be configured as an arc-shaped suction head as a whole, or it can be provided with an arc-shaped suction surface for adsorbing the first bag wall 121 on the side of its main structure away from the first negative pressure suction arm 221. The form is flexible and can be adapted according to the installation space and functional requirements. Similarly, the second suction head 232 can also adopt an overall arc-shaped structure or a partial arc-shaped suction surface design. This embodiment does not limit this.

[0056] Please see Figures 1 to 3In one embodiment, the support mechanism 24 includes a first driving member 241 and a support frame 242. The first negative pressure suction arm 221 includes a suction arm body 2211 and a support rod 2212. The negative pressure fan 21 and the first suction head 222 are both connected to the suction arm body 2211 to form a first negative pressure channel. The suction arm body 2211 is connected to the support rod 2212. The first driving member 241 is connected to the support frame 242. The support rod 2212 is rotatably mounted on the support frame 242. The rod 2212 is connected to the drive mechanism so that the first drive member 241 can drive the suction arm body 2211 to rotate relative to the support frame 242 via the support rod 2212. The first drive member 241 is electrically connected to the belt sampling machine control cabinet 4. Specifically, the first drive member 241 is electrically connected to the belt sampling machine control cabinet 4, and the belt sampling machine control cabinet 4 can control the start, stop, and direction of the first drive member 241 according to a preset program, thereby realizing the reciprocating movement of the first negative pressure suction arm 221 between the bag taking position 2221 and the sampling position 2222. The shape of the support rod 2212 can be adapted to the shape of the suction arm body 2211, for example, it can be arc-shaped or U-shaped, to fit the contour of the suction arm body 2211, which not only achieves compact integration of the structure, but also effectively enhances the overall rigidity and deformation resistance of the suction arm. The structure provides stable support through the support frame 242, controllable power through the first drive component 241, reliable transmission through the support rod 2212, and a negative pressure channel integrated into the suction arm body 2211. Together, they form a rotating suction system that integrates mechanical transmission, negative pressure adsorption, and automatic control, ensuring that the self-sealing sample bag 12 can be stably removed and accurately transferred to the receiving station, significantly improving the automation level, structural strength, and operational reliability of the sampling and packaging process. The first driving component 241 can be a servo motor, stepper motor, pneumatic swing cylinder, or electric push rod in existing structures. When a servo motor or stepper motor is used, the first driving component 241 can transmit power to the support rod 2212 through a coupling, gear, or synchronous belt, causing the support rod 2212 and the suction arm body 2211 to rotate 90 degrees. This causes the first suction head 222 to rotate from the bag-taking position 2221 to the sampling position 2222, positioning the self-sealing sample bag 12 below the material discharge port 200 of the belt sampler, ready to receive the material. When a pneumatic swing cylinder is used, its output shaft is connected to the support rod 2212, using compressed air to drive the suction arm body 2211 to reciprocate between the bag-taking position 2221 and the sampling position 2222. This design allows for flexible selection of the driving form according to actual working conditions and control requirements, balancing performance and cost. In addition, a rotating connection can be achieved by setting a rotating shaft on the support rod 2212 and embedding it in the support frame 242 with a bearing. Alternatively, a rotating connection can be achieved by using a pin hinge or a slewing bearing, etc., to ensure smooth rotation and accurate positioning. This embodiment does not limit this.

[0057] Please see Figure 1 and Figure 2 In one embodiment, the continuous sampling automatic packaging structure 100 of the belt sampler further includes a sample conveying mechanism 5. The sample conveying mechanism 5 is located below the material discharge port 200 of the belt sampler. The sample conveying mechanism 5 is used to carry the self-sealing sample bag 12 containing the sample and convey the self-sealing sample bag 12 to the roller sealing device 3. The sample conveying mechanism 5 is electrically connected to the belt sampler control cabinet 4. Specifically, the sample conveying mechanism 5 is electrically connected to the belt sampler control cabinet 4, and its start and stop can be automatically controlled by the belt sampler control cabinet 4 according to the sampling process to achieve coordinated operation with other processes. When the self-sealing sample bag 12 is in the sampling position 2222 for receiving material, it is attracted by the first bag wall 121 and the second bag wall 122 by the rotating suction component 22 and the fixed suction component 23 respectively, keeping the opening 1241 completely open. At this time, the self-sealing sample bag 12 is in a suspended state and is not placed on the sample conveying mechanism 5, so as to avoid the sample conveying mechanism 5 from obstructing or interfering with the opening action, and ensuring that the crushed and shrunk coal sample can fall smoothly and completely into the receiving cavity 124. After the material receiving is completed, the negative pressure suction device 2 stops supplying air, and the first suction head 222 and the second suction head 232 simultaneously release the self-sealing sample bag 12. The self-sealing sample bag 12 falls vertically under its own weight and accurately lands on the bearing surface of the sample conveying mechanism 5. Subsequently, the sample conveying mechanism 5 starts, smoothly conveying the sample-filled self-sealing sample bag 12 to the station of the roller sealing device 3, ready for automatic sealing. This design separates the material receiving and conveying functions in space and time, ensuring the stability and integrity of the material receiving process, and realizing the automatic flow of the self-sealing sample bag 12 after sample filling. It effectively prevents obstruction of material falling or bag displacement caused by premature contact with the conveying mechanism, significantly improving the reliability, continuity and automation level of the entire automatic sealing process.

[0058] Please see Figure 1 and Figure 2In one embodiment, the sample conveying mechanism 5 includes a second drive member 51, a sample conveying belt 52, and guardrails 53 disposed on both sides of the belt conveyor. The guardrails 53 extend along the length of the sample conveying belt 52. The second drive member 51 is connected to the sample conveying belt 52 so that the second drive member 51 can drive the sample conveying belt 52 to rotate. The sample conveying belt 52 is used to carry the self-sealing sample bag 12 containing the sample and convey the self-sealing sample bag 12 to the roller sealing device 3. The guardrails 53 are used to prevent the self-sealing sample bag 12 from tipping over. The second drive member 51 is electrically connected to the belt sampling machine control cabinet 4. Specifically, the second drive member 51 is electrically connected to the belt sampling machine control cabinet 4, which is automatically started by the belt sampling machine control cabinet 4 according to the sampling completion signal to achieve linkage operation. The guardrails 53 are disposed on both sides of the conveying belt to limit and protect the self-sealing sample bag 12 during operation, preventing it from tipping over or slipping due to vibration, offset, or external force, and ensuring a stable and reliable conveying process. During the receiving process, the self-sealing sample bag 12 is suspended and fixed by the negative pressure suction device 2, and does not come into contact with the sample conveying tape machine 52. After receiving, the self-sealing sample bag 12 falls onto the bearing surface of the sample conveying tape machine 52 under its own weight. Then, the second drive unit 51 drives the sample conveying tape machine 52 to transport the self-sealing sample bag 12 to the sealing station. This structure, through reasonable drive configuration and protective design, realizes the automatic, safe, and continuous flow of the self-sealing sample bag 12 from receiving to sealing, significantly improving the automation level and operational stability of the sampling and packaging system. The second drive unit 51 can be a servo motor, stepper motor, or three-phase asynchronous motor in existing structures, and can be flexibly selected according to the load requirements, control accuracy requirements, and installation space of the equipment. This embodiment does not limit this. The sample conveying tape machine 52 can be a tape machine in an existing structure.

[0059] Please see Figure 1In one embodiment, the continuous sampling automatic packaging structure 100 of the belt sampler further includes a sample storage box 6. The sample storage box 6 and the negative pressure suction device 2 are respectively located on both sides of the roller sealing device 3. The sample storage box 6 is located below the output end of the sample conveying mechanism 5, which is used to convey the self-sealing sample bag 12 with the sealed opening 1241 to the sample storage box 6. And / or, the outer wall of the first clamping roller 31 is provided with a first rubber sleeve 311; and / or, the outer wall of the second clamping roller 32 is provided with a second rubber sleeve 321. Specifically, the sample storage box 6 and the negative pressure suction device 2 are respectively located on both sides of the roller sealing device 3, forming a unidirectional continuous process flow layout from bag taking, receiving, sealing to collection, effectively avoiding the intersection of movement lines and spatial interference between processes, and improving the orderliness and safety of equipment operation. The sample storage box 6 is located below the output end of the sample conveying mechanism 5. This design allows the same sample conveying mechanism 5 to undertake dual handling functions, significantly improving system integration and operating efficiency. The sample conveying mechanism 5 is not only used to convey the self-sealing sample bag 12 after receiving the material to the roller sealing device 3 for sealing, but also to continue to convey the self-sealing sample bag 12 after sealing the opening 1241 to its output end, so that the self-sealing sample bag 12 falls into the sample storage box 6 below under its own weight, realizing the automatic flow of the whole process from sampling to sealing and then to centralized collection. Furthermore, the outer wall of the first clamping roller 31 is provided with a first rubber sleeve 311, and / or the outer wall of the second clamping roller 32 is provided with a second rubber sleeve 321. Both the first rubber sleeve 311 and the second rubber sleeve 321 are made of elastic material. Their function is twofold: firstly, to increase the friction between the two clamping rollers and the self-sealing sample bag 12, preventing the self-sealing sample bag 12 from slipping during the pressing process, ensuring that the first self-sealing strip 1211 and the second self-sealing strip 1221 are tightly attached and completely closed, thus improving the sealing performance; secondly, to utilize the elastic buffering properties of rubber, avoiding direct compression by the metal clamping rollers that could cause damage, tearing of the seal edge, or surface damage to the self-sealing sample bag 12, effectively protecting the integrity of the self-sealing sample bag 12. This structure, through reasonable spatial layout, reuse of conveying functions, and optimized design of key components, achieves efficient, stable, and closed-loop operation of the sampling and packaging process, significantly improving the automation level and reliability of the system.

[0060] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A continuous sampling automatic packaging structure for a belt sampling machine, characterized in that, The continuous sampling automatic packaging structure of the belt sampling machine includes: An automatic bag feeder includes a box body and multiple self-sealing sample bags disposed inside the box body. Each self-sealing sample bag is assigned a different number and each self-sealing sample bag is provided with a receiving cavity for holding the sample. The opening of the receiving cavity is arranged facing upwards, and a first self-sealing strip and a second self-sealing strip are respectively provided on the opposite sides of the cavity wall. A negative pressure suction device is used to move the self-sealing sample bag from the box to below the discharge port of the belt sampler, so that the sample can move from the discharge port of the belt sampler through the opening into the receiving cavity; A roller-pressing sealing device includes a first clamping roller and a second clamping roller, both of which are arranged at intervals in a horizontal direction. The space between the first clamping roller and the second clamping roller is used for the self-sealing sample bag to pass through. The first clamping roller and the second clamping roller are used to squeeze the self-sealing sample bag so that the first self-sealing strip and the second self-sealing strip abut against each other to seal the opening. The belt sampling machine control cabinet, the negative pressure suction device, the roller sealing device and the train loading conveyor belt are all electrically connected to the belt sampling machine control cabinet.

2. The continuous sampling automatic packaging structure of the belt sampling machine as described in claim 1, characterized in that, The housing includes a bottom plate, side plates, and baffles connected to each other. The bottom plate and the side plates enclose a receiving groove for accommodating multiple self-sealing sample bags. An inlet is provided at the top of the receiving groove, and an outlet is provided on the side of the receiving groove near the negative pressure suction device. The two opposite ends of the bottom plate are a first end and a second end, with the second end located near the outlet. The first end is higher than the second end, so that the self-sealing sample bags can slide from the first end to the second end by gravity. A baffle is provided at the second end, which can abut against the self-sealing sample bags to restrict the self-sealing sample bags from sliding out of the second end.

3. The continuous sampling automatic packaging structure of the belt sampling machine as described in claim 2, characterized in that, The automatic bag feeding box also includes a pushing mechanism, which is located at the first end and is used to push the self-sealing sample bag from the first end to the second end.

4. The continuous sampling automatic packaging structure of the belt sampling machine as described in claim 2, characterized in that, The negative pressure suction device includes a negative pressure fan, a rotating suction assembly, a fixed suction assembly, and a support mechanism. The negative pressure fan is connected to the support mechanism. Both the rotating suction assembly and the fixed suction assembly are connected to the negative pressure fan. The fixed suction assembly is located below the material inlet of the belt sampler. The two opposite sides of the self-sealing sample bag are respectively configured as a first bag wall and a second bag wall. The first bag wall and / or the second bag wall are provided with the number. The first bag wall and the second bag wall are connected to form the receiving cavity. The first bag wall is provided with a first self-sealing strip on the side facing the second bag wall, and the second bag wall is provided with a second self-sealing strip on the side facing the first bag wall. The negative pressure fan is electrically connected to the control cabinet of the belt sampler. The rotating suction assembly is rotatably mounted on the support mechanism. The rotating suction assembly has a bag-taking position and a sampling position, and the rotating suction assembly can reciprocate between the bag-taking position and the sampling position. The rotating suction assembly is located at the bag taking position, and the negative pressure fan can provide negative pressure to the rotating suction assembly to adsorb the first bag wall, so that the self-sealing sample bag can be moved out of the outlet; The rotating suction assembly is located at the sampling position, and the negative pressure fan can provide negative pressure to the fixed suction assembly to adsorb the second bag wall, so that the first self-sealing strip and the second self-sealing strip separate to open the opening.

5. The continuous sampling automatic packaging structure of the belt sampling machine as described in claim 4, characterized in that, The rotating suction assembly includes a first negative pressure suction arm and a first suction head. The negative pressure fan and the first suction head are both connected to the first negative pressure suction arm to form a first negative pressure channel. The negative pressure fan can provide negative pressure to the first suction head through the first negative pressure channel to adsorb the first bag wall. The fixed suction assembly includes a second negative pressure suction arm and a second suction head. The negative pressure fan and the second suction head are both connected to the second negative pressure suction arm to form a second negative pressure channel. The negative pressure fan can provide negative pressure to the second suction head through the second negative pressure channel to adsorb the second bag wall. The second suction head is located below the material discharge port of the belt sampler. The first negative pressure suction arm is rotatably mounted on the support mechanism. The first suction head has a bag-taking position and a sampling position. The first negative pressure suction arm can drive the first suction head to reciprocate between the bag-taking position and the sampling position.

6. The continuous sampling automatic packaging structure of the belt sampling machine as described in claim 5, characterized in that, The side of the first suction head away from the first negative pressure suction arm is a first arc-shaped surface. The first arc-shaped surface extends away from the first negative pressure suction arm and is used to adsorb the first bag wall. And / or, The side of the second suction head away from the second negative pressure suction arm is a second arc-shaped surface. The second arc-shaped surface extends away from the second negative pressure suction arm and is used to adsorb the second bag wall.

7. The continuous sampling automatic packaging structure for the belt sampling machine as described in claim 5, characterized in that, The support mechanism includes a first driving component and a support frame. The first negative pressure suction arm includes a suction arm body and a support rod. The negative pressure fan and the first suction head are both connected to the suction arm body to form the first negative pressure channel. The suction arm body is connected to the support rod. The first driving component is connected to the support frame. The support rod is rotatably mounted on the support frame. The first driving component is driven by the support rod so that the first driving component can drive the suction arm body to rotate relative to the support frame through the support rod. The first driving component is electrically connected to the belt sampling machine control cabinet.

8. The continuous sampling automatic packaging structure for the belt sampling machine as described in any one of claims 1 to 7, characterized in that, The continuous sampling automatic packaging structure of the belt sampler also includes a sample conveying mechanism. The sample conveying mechanism is located below the material inlet of the belt sampler. The sample conveying mechanism is used to carry the self-sealing sample bag containing the sample and convey the self-sealing sample bag to the roller sealing device. The sample conveying mechanism is electrically connected to the control cabinet of the belt sampler.

9. The continuous sampling automatic packaging structure for the belt sampling machine as described in claim 8, characterized in that, The sample conveying mechanism includes a second drive unit, a sample conveying belt, and guardrails disposed opposite to each other on both sides of the belt. The guardrails extend along the length of the sample conveying belt. The second drive unit is driven to drive the sample conveying belt so that it can rotate the belt. The sample conveying belt carries the self-sealing sample bag containing the sample and conveys the self-sealing sample bag to the roller sealing device. The guardrails prevent the self-sealing sample bag from tipping over. The second drive unit is electrically connected to the belt sampling machine control cabinet.

10. The continuous sampling automatic packaging structure for the belt sampling machine as described in claim 8, characterized in that, The continuous sampling automatic packaging structure of the belt sampler also includes a sample storage box. The sample storage box and the negative pressure suction device are located on both sides of the roller sealing device. The sample storage box is located below the output end of the sample conveying mechanism. The sample conveying mechanism is used to convey the self-sealing sample bag with the opening sealed to the sample storage box. And / or, The outer wall of the first clamping roller is provided with a first rubber sleeve; And / or, The outer wall of the second pinch roller is provided with a second rubber sleeve.

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