Automatic sampling device used in pneumatic pipeline transportation

Abstract

The present invention relates to the field of automatic sampling technology, and in particular to an automatic sampling device used in pneumatic pipeline transportation, comprising: a transport bottle, a receiving chamber, a rotating mechanism, a linear mechanism, a screw-capping mechanism and a sampling mechanism. The transport bottle comprises a bottle body and a bottle cap threadedly connected to both ends of the bottle body. The transport bottle on the pneumatic pipeline transportation system is guided by the receiving chamber to fall onto the rotating mechanism, the transport bottle is translated to a first position by the rotating mechanism, and the transport bottle in the first position is translated to below the screw-capping mechanism and below the sampling mechanism by the linear mechanism. Before sampling, the bottle cap of the transport bottle is unscrewed by the screw-capping mechanism, and then the sample is collected by the sampling mechanism. After the collection is completed, the transport bottle returns to the screw-capping mechanism to tighten the bottle cap, completing the entire collection work. The automatic sampling device provided by the present invention can be directly applied to pneumatic pipeline transportation. Compared with manual sampling, it greatly improves efficiency while also avoiding contamination of the sample.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic sampling, and in particular to an automatic sampling device applied to pneumatic pipeline transportation. Background Art

[0002] Pneumatic tube conveying systems are a modern, fast logistics tool. They are used in hospitals, banks, office buildings, supermarkets, production facilities, laboratories, and other locations where large quantities of goods need to be transported daily. Items are placed in a carrier, such as a dedicated conveyor tube, to protect them from damage during transport. Pneumatic tube conveying systems transport items from one workstation to another within a pipeline, effectively ensuring their safety while also saving time and improving efficiency.

[0003] Nowadays, many lithium battery companies use unmanned workshops for production operations and use pneumatic pipeline transmission systems to transport lithium battery powder. However, when sampling and inspecting lithium battery powder in transmission, most of them still use manual sampling and inspection methods, which can easily lead to a series of problems such as increased production costs, irregular sample collection, and sample contamination.

[0004] The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present disclosure and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art known to those skilled in the art. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an automatic sampling device for pneumatic pipeline transportation, which not only meets the needs of pneumatic pipeline transportation but also realizes automated sampling work, thereby realizing the integration of lithium battery powder sampling, collection and transportation.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is: an automatic sampling device for pneumatic pipeline transportation, comprising:

[0007] A transport bottle comprising a bottle body and bottle caps threadedly connected to both ends of the bottle body;

[0008] a receiving chamber having a top opening and a bottom outlet, providing a passage for the transport bottle to fall;

[0009] The rotating mechanism includes a first motor and a rotating disk. The rotating disk is provided with a plurality of slots equidistantly arranged in an annular shape. The slots are used to receive the transport bottles dropped from the bottom outlet. The first motor is used to drive the rotating disk to rotate and move the transport bottles to the first position.

[0010] a linear mechanism comprising a linear guide and a clamping head, wherein the clamping head is used to clamp the transport bottle, and the linear guide is used to move the transport bottle at the first position to a second position and a third position;

[0011] A screw capping mechanism is located directly above the second position and is used to unscrew the bottle cap before sampling and tighten the bottle cap after sampling. A discharge port is provided directly below the second position.

[0012] The sampling mechanism is located directly above the third position and comprises a sampling plug and a three-axis motion assembly. The three-axis motion assembly is used to drive the sampling plug to be inserted into the transport bottle for sampling.

[0013] Furthermore, it also includes a shell, which is divided into two layers. The upper layer is divided into the receiving chamber, mechanical chamber and sampling chamber from left to right, and the lower layer is the mobile chamber. The bottom of the sampling chamber is connected to the top of the mobile chamber.

[0014] Furthermore, a circle of anti-slip protrusions is provided on the bottle cap, and sealing shock-absorbing strips are provided on the upper and lower ends of the bottle body.

[0015] Furthermore, a necking section is connected below the bottom outlet, and a cylindrical section is connected below the necking section. The inner diameter of the cylindrical section is equal to the minimum inner diameter of the necking section.

[0016] Furthermore, a rotating shaft is provided at the center of the rotating disk, a first gear is provided at the end of the output shaft of the first motor, and an outer ring gear meshing with the first gear is provided at the upper end of the rotating shaft.

[0017] Furthermore, the shell is provided with sensors on both the front and rear sides of the rotating disk, and the sensors are used to detect whether the transport bottle is in the card slot facing the sensor.

[0018] Furthermore, the capping mechanism includes a capping shell, a connecting rod, a first lifting assembly and a second motor. The capping shell is located in the moving chamber. A clamping mechanism for clamping the bottle cap is provided in the capping shell. The bottom of the connecting rod passes through the lower wall of the mechanical chamber and is fixedly connected to the top of the capping shell. The top of the connecting rod is connected to the first lifting assembly. A second gear is provided at the end of the output shaft of the second motor. The part of the connecting rod located in the mechanical chamber has an outer ring gear that meshes with the second gear.

[0019] Furthermore, the clamping mechanism includes a third motor and two clamping seats arranged opposite to each other, the clamping seat includes a clamping block and a sliding block located on the top of the clamping block, the third motor is installed at the top of the rotary cover shell, the bottom end of the third motor output shaft has a third gear, and the two sliding blocks are provided with racks meshing with the third gear on opposite sides, and the sliding block is slidably connected to the rotary cover shell on the side away from the third gear.

[0020] Furthermore, during the lifting process of the connecting rod, the outer ring gear on the connecting rod always remains in meshing state with the second gear.

[0021] Furthermore, the three-axis motion assembly includes a lifting cylinder, a front-and-rear moving cylinder, and a left-and-right moving cylinder. The sampling plug is fixed on the slider of the left-and-right moving cylinder. The base of the left-and-right moving cylinder is installed on the slider of the front-and-rear moving cylinder. The base of the front-and-rear moving cylinder is installed on the slider of the lifting cylinder. The base of the lifting cylinder is installed on the shell in the sampling chamber.

[0022] The beneficial effects of the present invention are as follows: the present invention provides a set of automated sampling devices for use in pneumatic pipeline transportation. Compared with the traditional manual sampling and inspection method, it reduces manpower and material resources, greatly improves efficiency, and avoids contamination of samples. The entire sampling process is more economical and the sampling process becomes simple and effective. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 Schematic diagram of the structure of an automatic sampling device (part of the housing is omitted) applied to pneumatic pipeline transportation in an embodiment of the present invention;

[0025] Figure 2 for Figure 1 A magnified view of point A;

[0026] Figure 3 for Figure 1 Enlarged view of point B;

[0027] Figure 4 This is a schematic structural diagram of a housing in an embodiment of the present invention;

[0028] Figure 5This is a structural diagram of an automatic sampling device applied to pneumatic pipeline transportation in an embodiment of the present invention from another perspective;

[0029] Figure 6 This is a front view of an automatic sampling device used in pneumatic pipeline transportation according to an embodiment of the present invention;

[0030] Figure 7 This is a schematic structural diagram of a transport bottle in an embodiment of the present invention;

[0031] Figure 8 This is a front view of a transport bottle in an embodiment of the present invention;

[0032] Figure 9 Schematic diagram of the structure of the rotating disk in an embodiment of the present invention;

[0033] Figure 10 Schematic diagram of the interior of the screw cover shell in an embodiment of the present invention;

[0034] Figure 11 2 is a bottom view of the clamping mechanism in an embodiment of the present invention.

[0035] Figure numerals: 1. transport bottle; 2. bottle body; 3. bottle cap; 4. receiving chamber; 5. first motor; 6. rotating disk; 7. slot; 8. linear guide; 9. clamping head; 10. sampling plug; 11. shell; 12. mechanical chamber; 13. sampling chamber; 14. moving chamber; 15. anti-slip protrusion; 16. sealing shock-absorbing strip; 17. necking section; 18. cylindrical section; 19. rotating shaft; 20. first gear; 21. screw cap shell; 22. connecting rod; 23. first lifting assembly; 24. second motor; 25. second gear; 26. third motor; 27. clamping block; 28. sliding block; 29. third gear; 30. rack; 31. lifting cylinder; 32. forward and backward moving cylinder; 33. left and right moving cylinder. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0037] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0039] like Figures 1 to 11 The automatic sampling device shown for pneumatic pipeline transportation includes: a transport bottle 1, a receiving chamber 4, a rotating mechanism, a linear mechanism, a capping mechanism, and a sampling mechanism;

[0040] The present invention uses a transport bottle 1 to contain lithium battery powder during transportation in a pneumatic pipeline to ensure that it will not spill during transportation. The transport bottle 1 includes a bottle body 2 and a bottle cap 3 threadedly connected to both ends of the bottle body 2;

[0041] The receiving chamber 4 is used to form a channel for the transport bottle 1 to fall, ensuring that the transport bottle 1 falls accurately into the card slot 7 of the rotating disk 6. The receiving chamber 4 has a top opening and a bottom outlet, and the opening size of the top opening is significantly larger than the bottom outlet;

[0042] The rotating mechanism includes a first motor 5 and a rotating disk 6. The rotating disk 6 is provided with a plurality of slots 7 equidistantly arranged in an annular manner. In this embodiment, the rotating disk 6 preferably has four slots 7. The slots 7 are used to receive the transport bottles 1 dropped from the bottom outlet. The first motor 5 is used to drive the rotating disk 6 to rotate and move the transport bottles 1 to the first position.

[0043] The linear mechanism includes a linear guide 8 and a clamping head 9. The clamping head 9 is used to clamp the transport bottle 1. The linear guide 8 is used to move the transport bottle 1 at the first position to the second position and the third position. The screw cap mechanism is located directly above the second position and is used to unscrew the bottle cap 3 before sampling and tighten the bottle cap 3 after sampling. A discharge port is provided directly below the second position. The sampling mechanism is located directly above the third position and includes a sampling plug 10 and a three-axis motion assembly. The three-axis motion assembly is used to drive the sampling plug 10 to be inserted into the transport bottle 1 for sampling.

[0044] like Figure 1As shown, the automatic sampling device provided by the present invention has a top opening of the receiving chamber 4 connected to a pneumatic pipeline, and the transport bottle 1 to be sampled falls at the top opening and finally falls into the card slot 7. At this time, the first motor 5 drives the rotating disk 6 to rotate 90 degrees counterclockwise, and the transport bottle 1 that last fell into the card slot 7 is moved to the first position. The first position of this embodiment refers to the position of the rightmost card slot 7 of the rotating disk 6. Next, the linear mechanism is actuated, and the clamping head 9 is driven by the linear guide rail 8 to move to the first position. A suction cup can be provided on the clamping head 9, and an air extraction and discharge device can be used to clamp and fix the transport bottle 1. The clamping head 9 can also be designed as a two-half structure, which is controlled by a motor and a screw. The two halves of the clamping head 9 are driven to close together, thereby clamping the transport bottle 1. The specific structure of the clamping head 9 can be referred to the prior art, and the present invention will not focus on it. Under the clamping of the clamping head 9, the linear guide rail 8 drives the transport bottle 1 to move to the second position. The second position of this embodiment is directly below the screw cap mechanism. Since the transport bottle 1 is an open structure at both ends, both ends are connected with bottle caps 3. Therefore, no matter whether the transport bottle 1 flips over during the falling process, the bottle cap 3 on the top of the transport bottle 1 can be opened. The screw cap mechanism unscrews the bottle cap 3 on the top of the transport bottle 1 before sampling. After that, the linear screw rod 8 drives the transport bottle 1 to move to the third position. The third position of this embodiment is located at Figure 1 On the far right, the sampling mechanism is located just above the third position. The three-axis motion assembly can drive the sampling plug 10 to move forward, backward, left, right, and up and down. At this time, the three-axis motion assembly drives the sampling plug 10 to move downward and insert it into the transport bottle 1 for sampling. After the sampling is completed, it moves to other positions to place the sample into the experimental bottle or experimental instrument. The transport bottle 1 needs to be moved to the second position again at this time, and the capping mechanism tightens the bottle cap 3 on the bottle body 2 again. Then the clamping head 9 releases the transport bottle 1, and the transport bottle 1 falls from the discharge port. After that, the clamping head 9 returns to the first position and enters the next sampling cycle.

[0045] The operation of the above-mentioned mechanism does not mean that one mechanism completes its action before the next mechanism starts to move. In order to reduce the sampling time and improve the sampling efficiency, multiple mechanisms can move at the same time. All mechanisms can use a PLC controller for action control. The operator optimizes the action of the mechanism according to the time of each action. For example, before the clamping head 9 returns to the first position, the rotating mechanism has completed the next rotation action, avoiding the clamping head 9 waiting for the rotating mechanism to move, thereby reducing the sampling time. The specific optimization method can be obtained through multiple experiments by the operator and will not be repeated here.

[0046] like Figures 4-6As shown, specifically, in order to ensure the sealing of the automatic sampling device, it also includes a shell 11, and the shell 11 is divided into two layers. The upper layer is divided into a receiving chamber 4, a mechanical chamber 12 and a sampling chamber 13 from left to right, and the lower layer is a mobile chamber 14. The bottom of the sampling chamber 13 and the top of the mobile chamber 14 are connected.

[0047] like Figure 7 and 8 As shown, in order to facilitate the screw cap mechanism to unscrew the bottle cap 3, a circle of anti-slip protrusions 15 is provided on the bottle cap 3, and the anti-slip protrusions 15 increase the friction force. In order to facilitate clamping, sealing shock-absorbing strips 16 are provided on the upper and lower ends of the bottle body 2.

[0048] like Figure 6 As shown, in order to make the transport bottle 1 fall accurately into the card slot 7, a necking section 17 is connected below the bottom outlet of the receiving chamber 4, and a cylindrical section 18 is connected below the necking section 17. The inner diameter of the cylindrical section 18 is equal to the minimum inner diameter of the necking section 17. The transport bottle 1 is erected by the necking section 17, and the transport bottle 1 is accurately dropped into the card slot 7 directly below by the limiting of the cylindrical section 18. The necking section 17 and the cylindrical section 18 are not limited to being connected at the bottom outlet of the receiving chamber 4. The necking section 17 and the cylindrical section 18 can also be extended upward so that the upper end of the necking section 17 is directly flush with the top of the shell 11. Regardless of the method, it falls within the protection scope of the present invention.

[0049] As a specific disclosure of the above embodiment, a rotating shaft 19 is provided at the center of the rotating disk 6, and the rotating shaft 19 is rotatably connected to the housing 11 through a bearing. A first gear 20 is provided at the output shaft end of the first motor 5, and the upper end of the rotating shaft 19 has an outer ring gear that meshes with the first gear 20. Through the setting of the rotating shaft 19, the first motor 5 can be installed in the mechanical chamber 12 to drive the rotating disk 6 to rotate. The first motor 5 drives the rotating shaft 19 to rotate through the first gear 20, thereby causing the rotating disk 6 to rotate.

[0050] like Figure 9 As shown, a bottom plate is provided at the bottom of the card slot 7, and the transport bottle 1 can be supported by the bottom plate, so that the transport bottle 1 can be moved when rotating.

[0051] In order to detect whether the transport bottle 1 is missing in the slot 7, the shell 11 is provided with sensors on both the front and rear sides of the rotating disk 6. The sensor on the front side of the shell 11 can sense whether there is a transport bottle 1 in the slot 7 that can be moved to the first position. If there is no transport bottle 1, the action of other mechanisms can be stopped. The sensor on the rear side of the shell 11 can sense whether the clamping head 9 has clamped away the transport bottle 1 in the slot 7 at the first position, thereby preventing the clamping head 9 from moving ineffectively.

[0052] like Figures 1 to 2 , Figures 10 to 11As shown, in this embodiment, the capping mechanism includes a capping shell 21, a connecting rod 22, a first lifting assembly 23 and a second motor 24. The capping shell 21 is located in the moving chamber 14. A clamping mechanism for clamping the bottle cap 3 is provided in the capping shell 21. The bottom of the connecting rod 22 passes through the lower wall of the mechanical chamber 12 and is fixedly connected to the top of the capping shell 21. The top of the connecting rod 22 is connected to the first lifting assembly 23. The output shaft end of the second motor 24 is provided with a second gear 25. The part of the connecting rod 22 located in the mechanical chamber 12 has an outer ring gear that meshes with the second gear 25. The clamping mechanism includes a third motor 26 and two clamping seats arranged opposite to each other. The clamping seat includes a clamping block 27 and a sliding block 28 located on the top of the clamping block 27. The third motor 26 is installed at the top of the rotary cover shell 21. The bottom end of the output shaft of the third motor 26 is provided with a third gear 29. The two sliding blocks 28 are provided with a rack 30 meshing with the third gear 29 on the opposite side. The sliding block 28 is slidably connected to the rotary cover shell 21 on the side away from the third gear 29. The first lifting component 23 of this embodiment adopts a rodless cylinder, which is rotatably connected to the top of the connecting rod 22, and the connecting rod 22 can rotate freely.

[0053] The use of the capping mechanism of this embodiment includes opening and closing actions. For the opening action, the first lifting assembly 23 drives the connecting rod 22 to fall to the specified position. At this time, the clamping block 27 and the bottle cap 3 are at the same height. Under the drive of the third motor 26, the rack 30 moves, thereby driving the clamping seat to move. The two clamping blocks 27 gradually approach and clamp on the bottle cap 3. At this time, the second motor 24 starts to work. The second motor 24 drives the connecting rod 22 to rotate through the second gear 25, thereby transmitting the power to the clamping block 27. The bottle cap 3 is clamped by the rotation of the clamping block 27. The bottle cap 3 is unscrewed to realize the opening action; for the closing action, when the transport bottle 1 after sampling is completed moves to the second position, the first lifting component 23 drives the connecting rod 22 downward, and the bottle cap 3 is buckled on the bottle body 2. The second motor 24 is used to drive the clamping block 27 to rotate, thereby tightening the bottle cap 3. After that, the third motor 26 is activated to separate the clamping block 27 from the bottle cap 3. After separation, the clamping head 9 releases the transport bottle 1, and the transport bottle 1 falls and leaves the shell through the discharge port. The discharge port can be connected to the pneumatic pipeline transportation system, so that the transport bottle 1 after sampling continues to be transported.

[0054] In order to prevent the outer ring gear of the connecting rod 22 from separating from the second gear 25, the outer ring gear of the connecting rod 22 can be designed to be longer to ensure that the outer ring gear on the connecting rod 22 always remains in meshing state with the second gear 25 during the lifting process of the connecting rod 22.

[0055] More specifically, the three-axis motion assembly includes a lifting cylinder 31, a front-and-rear moving cylinder 32, and a left-and-right moving cylinder 33. The sampling plug 10 is fixed on the slider of the left-and-right moving cylinder 33. The base of the left-and-right moving cylinder 33 is installed on the slider of the front-and-rear moving cylinder 32. The base of the front-and-rear moving cylinder 32 is installed on the slider of the lifting cylinder 31. The base of the lifting cylinder 31 is installed on the shell 11 in the sampling chamber 13. The lifting cylinder 31 and the front-and-rear moving cylinder 32 are both rodless cylinders, and the left-and-right moving cylinder 33 is a rod cylinder. The three-axis motion assembly can complete corresponding actions according to the action instructions set by the PLC, with precise actions and fast responses.

[0056] Those skilled in the art will appreciate that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic sampling device used in pneumatic pipeline transportation, characterized in that: include: A transport bottle (1) comprising a bottle body (2) and a bottle cap (3) threadedly connected to both ends of the bottle body (2); A receiving chamber (4) having a top opening and a bottom outlet, providing a passage for the transport bottle (1) to fall; The rotating mechanism comprises a first motor (5) and a rotating disk (6), wherein the rotating disk (6) is provided with a plurality of slots (7) at equal intervals in an annular shape, wherein the slots (7) are used to receive the transport bottle (1) dropped from the bottom outlet, and the first motor (5) is used to drive the rotating disk (6) to rotate so as to move the transport bottle (1) to a first position; A linear mechanism comprising a linear guide rail (8) and a clamping head (9), wherein the clamping head (9) is used to clamp the transport bottle (1), and the linear guide rail (8) is used to move the transport bottle (1) at the first position to a second position and a third position; a screw capping mechanism, located just above the second position, for unscrewing the bottle cap (3) before sampling and tightening the bottle cap (3) after sampling, and a discharge port is provided just below the second position; A sampling mechanism, located directly above the third position, comprises a sampling plug (10) and a three-axis motion assembly, wherein the three-axis motion assembly is used to drive the sampling plug (10) to be inserted into the transport bottle (1) for sampling; The housing (11) is further comprised of two layers, wherein the upper layer is divided into the receiving chamber (4), the mechanical chamber (12), and the sampling chamber (13) from left to right, and the lower layer is a mobile chamber (14). The bottom of the sampling chamber (13) is connected to the top of the mobile chamber (14). The capping mechanism comprises a capping shell (21), a connecting rod (22), a first lifting assembly (23) and a second motor (24); the capping shell (21) is located in the moving chamber (14); a clamping mechanism for clamping the bottle cap (3) is provided in the capping shell (21); the bottom of the connecting rod (22) passes through the lower wall of the mechanical chamber (12) and is fixedly connected to the top of the capping shell (21); the top of the connecting rod (22) is connected to the first lifting assembly (23); a second gear (25) is provided at the end of the output shaft of the second motor (24); and the portion of the connecting rod (22) located in the mechanical chamber (12) has an outer ring gear meshing with the second gear (25); The clamping mechanism includes a third motor (26) and two clamping seats arranged opposite to each other, the clamping seat includes a clamping block (27) and a sliding block (28) located on the top of the clamping block (27), the third motor (26) is installed at the top of the rotary cover shell (21), the bottom end of the output shaft of the third motor (26) is provided with a third gear (29), and the two sliding blocks (28) are provided with a rack (30) meshing with the third gear (29) on the opposite side, and the sliding block (28) is slidably connected to the rotary cover shell (21) on the side away from the third gear (29); The three-axis motion assembly includes a lifting cylinder (31), a front-back moving cylinder (32) and a left-right moving cylinder (33), the sampling plug (10) is fixed on the slider of the left-right moving cylinder (33), the base of the left-right moving cylinder (33) is installed on the slider of the front-back moving cylinder (32), the base of the front-back moving cylinder (32) is installed on the slider of the lifting cylinder (31), and the base of the lifting cylinder (31) is installed on the shell (11) in the sampling chamber (13).

2. The automatic sampling device for pneumatic pipeline transportation according to claim 1 is characterized in that: The bottle cap (3) is provided with a circle of anti-slip protrusions (15), and the upper and lower ends of the bottle body (2) are both provided with sealing shock-absorbing strips (16).

3. The automatic sampling device for pneumatic pipeline transportation according to claim 2 is characterized in that: A necking section (17) is connected below the bottom outlet, and a cylindrical section (18) is connected below the necking section (17). The inner diameter of the cylindrical section (18) is equal to the minimum inner diameter of the necking section (17).

4. The automatic sampling device for pneumatic pipeline transportation according to claim 3 is characterized in that: A rotating shaft (19) is provided at the center of the rotating disk (6), a first gear (20) is provided at the end of the output shaft of the first motor (5), and an outer ring gear meshing with the first gear (20) is provided at the upper end of the rotating shaft (19).

5. The automatic sampling device for pneumatic pipeline transportation according to claim 4 is characterized in that: The housing (11) is provided with sensors on both the front and rear sides of the rotating disk (6), and the sensors are used to detect whether the transport bottle (1) is in the card slot (7) facing the sensor.

6. The automatic sampling device for pneumatic pipeline transportation according to claim 1 is characterized in that: During the lifting and lowering process of the connecting rod (22), the outer ring gear on the connecting rod (22) always remains in meshing state with the second gear (25).

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