Buffer mechanism

Abstract

The utility model provides a buffer mechanism, and relates to the technical field of filter stick production and detection. The buffering mechanism comprises a buffering pipe and a mounting assembly. The first end of the buffering pipe is opposite to an outlet of the conveying pipe, and the filter sticks in the conveying pipe can fall into the first end of the buffering pipe. The mounting assembly comprises a mounting part, the mounting part is provided with a mounting channel and an air source buffering channel communicated with the mounting channel, the mounting part is connected between the second end of the buffering pipe and the receiving guide pipe, so that the buffering pipe is communicated with the receiving guide pipe through the mounting channel, and the air source buffering channel is communicated with an external air source. The buffer mechanism can reduce the probability of deformation of the end faces of the filter sticks after the filter sticks are transmitted to the receiving end, so that the accuracy of subsequent filter stick physical index detection results is ensured.

Description

Technical Field

[0001] This utility model relates to the field of filter rod production and testing technology, and in particular to a buffer mechanism. Background Technology

[0002] In the production process of tobacco tow filter rods, random sampling inspection of the filter rods is required. Currently, this process is typically accomplished using an automatic sampling and testing device, which generally consists of a sampling section, a transmission section, and a receiving section. During sampling, negative pressure is used to draw in the filter rods, and then compressed air is used to transport them through a transmission pipeline to the receiving end of the integrated testing platform. Since the transmission pipeline is usually installed above the integrated testing platform, and there is a certain distance between the pipeline and the receiving end, and to ensure transmission speed, a certain pressure is required as the filter rod exits the pipeline as a driving force. Therefore, under the combined effects of distance and pressure, when the filter rod falls through the transmission pipeline to the receiving end, a certain impact force is generated between the filter rod and the receiving end, which may cause deformation of the filter rod's end face, affecting the accuracy of subsequent physical property test results. Utility Model Content

[0003] The purpose of this invention is to provide a buffer mechanism that can reduce the probability of filter rod end face deformation after the filter rod is transmitted to the receiving end, thereby ensuring the accuracy of subsequent filter rod physical property test results.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A buffer mechanism, disposed in the automatic sampling and transmission device and located between the transmission tube and the receiving conduit in the automatic sampling and transmission device, includes:

[0006] A buffer tube, the first end of which is disposed opposite to the outlet of the transmission tube, and the filter rod in the transmission tube can fall into the first end of the buffer tube;

[0007] The mounting assembly includes a mounting component, which has an mounting channel and a gas source buffer channel communicating with the mounting channel. The mounting component is connected between the second end of the buffer tube and the receiving conduit, so that the buffer tube is connected to the receiving conduit through the mounting channel, and the gas source buffer channel is connected to an external gas source.

[0008] As a further technical solution, the inner wall of the buffer tube is provided with a storage groove, the storage groove is located in the middle of the buffer tube, and a filter rod sensor capable of communicating with the external air source is provided in the storage groove.

[0009] As a further technical solution, the buffer tube is set as a transparent tube, or the buffer tube is provided with a viewing window.

[0010] As a further technical solution, along the direction from bottom to top, the installation channel is sequentially configured as a first cylindrical channel, a buffer frustum channel, and a second cylindrical channel that are interconnected, with a first abutment platform formed between the buffer frustum channel and the second cylindrical channel;

[0011] The receiving conduit is connected to the first cylindrical channel, the gas source buffer channel is connected to the buffer frustum channel, the second end of the buffer tube is inserted into the second cylindrical channel and abuts against the first abutment platform, and the inner diameter of the upper end of the buffer frustum channel is equal to the inner diameter of the buffer tube.

[0012] As a further technical solution, the mounting assembly also includes a first sealing ring, and the second end of the buffer tube is configured as a first connecting section with an outer diameter smaller than that of the middle part of the buffer tube;

[0013] The first sealing ring is fitted onto the first connecting section and abuts against the inner wall of the second cylindrical channel.

[0014] As a further technical solution, the installation assembly also includes a connecting pipe, through which the air source buffer channel is connected to the external air source, and a flow regulating valve is provided on the connecting pipe.

[0015] As a further technical solution, multiple air source buffer channels are provided, and the multiple air source buffer channels are evenly spaced along the circumference of the buffer frustum channel, and all of them are connected to the external air source.

[0016] As a further technical solution, the buffer mechanism also includes a connecting component, which includes a connector and a connecting channel. The first end of the buffer tube is connected to the automatic sampling and transmission device through the connector, so that the relative position of the buffer tube and the transmission tube is fixed.

[0017] As a further technical solution, the connecting channel is configured as a third cylindrical channel and a guide frustum channel that are interconnected. From bottom to top, the diameter of the guide frustum channel gradually increases, and a second abutment platform is formed between the third cylindrical channel and the guide frustum channel.

[0018] The first end of the buffer tube is inserted into the third cylindrical channel and abuts against the second abutment platform. The inner diameter of the buffer tube is equal to the inner diameter of the lower end of the guide frustum channel. The upper end of the guide frustum channel is positioned opposite to the outlet of the transmission tube.

[0019] As a further technical solution, the connecting assembly also includes a second sealing ring, and the first end of the buffer tube is configured as a second connecting section with an outer diameter smaller than that of the middle part of the buffer tube;

[0020] The second sealing ring is fitted onto the second connecting section and abuts against the inner wall of the third cylindrical channel.

[0021] Compared with the prior art, the buffer mechanism provided by this utility model has the following technical advantages:

[0022] Because the first end of the buffer tube is positioned opposite the outlet of the transmission tube, and the second end of the buffer tube is connected to the receiving conduit via the installation channel, the gas source buffer channel is connected to the installation channel, and the gas source buffer channel is also connected to an external gas source. Therefore, when the filter rod is sampled, the external gas source supplies gas into the buffer tube through the gas source buffer channel and the installation channel to form a buffered airflow. After the sampled filter rod falls into the buffer tube from the transmission tube under the action of the high-pressure gas, it falls from the buffer tube through the installation channel into the receiving conduit. During this process, the buffered airflow buffers the filter rod, reducing the impact of the high-pressure gas and the distance between the transmission tube and the receiving conduit on the filter rod. This reduces the probability of deformation of the filter rod end face after it reaches the receiving conduit, thus ensuring the accuracy of subsequent physical property test results of the filter rod. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model 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 content of the embodiments of this utility model and these drawings without creative effort.

[0024] Figure 1 This is a cross-sectional view of the buffer mechanism provided in an embodiment of the present utility model;

[0025] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0026] Figure 3 yes Figure 1 A magnified view of a section at point B in the middle;

[0027] Figure 4 This is a schematic diagram of the structure of the mounting component in the buffer mechanism provided in this utility model embodiment.

[0028] In the picture:

[0029] 100. Buffer tube; 110. Storage slot; 120. First connecting section; 130. Second connecting section;

[0030] 200. Installation component; 210. Installation part; 211. Installation channel; 2111. First cylindrical channel; 2112. Buffer frustum channel; 2113. Second cylindrical channel; 212. Air source buffer channel; 220. First sealing ring;

[0031] 300. Connecting component; 310. Connector; 311. Connecting channel; 3111. Third cylindrical channel; 3112. Guide frustum channel; 320. Second sealing ring. Detailed Implementation

[0032] Before explaining any implementation of this application in detail, it should be understood that this application is not limited to its application to the structural details and component arrangements set forth in the following description or shown in the above drawings.

[0033] In this application, the terms "comprising," "including," "having," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0034] In this application, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "and / or" relationship.

[0035] In this application, the terms "connection," "combination," "coupling," and "installation" can refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without the need for an intermediary, while an indirect connection refers to two parts or components each being connected to at least one intermediary, with the connection achieved through the intermediary. Furthermore, "connection" and "coupling" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.

[0036] In this application, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are to include the values ​​and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​not using relative terms should also be disclosed as specific values ​​with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.

[0037] In this application, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0038] In this application, the directional terms "upper," "lower," "left," "right," "front," and "rear" are used to describe the orientation and positional relationships shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when an element is mentioned as being connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as upper side, lower side, left side, right side, front side, and rear side not only represent positive orientation but can also be understood as lateral orientation. For example, "below" can include directly below, lower left, lower right, lower front, and lower rear.

[0039] Combination Figures 1 to 4As shown, the buffer mechanism provided in this embodiment is disposed in the automatic sampling and transmission device (not shown in the figure) and located between the transmission tube and the receiving tube in the automatic sampling and transmission device. This buffer mechanism can reduce the probability of filter rod end face deformation after the filter rod is transmitted to the receiving end, thereby ensuring the accuracy of subsequent filter rod physical index test results. Specifically, the buffer mechanism includes a buffer tube 100 and an installation assembly 200. The first end of the buffer tube 100 is disposed opposite to the outlet of the transmission tube, and the filter rod (not shown in the figure) in the transmission tube can fall into the first end of the buffer tube 100. The installation assembly 200 includes an installation member 210, which is provided with an installation channel 211 and a gas source buffer channel 212 communicating with the installation channel 211. The installation member 210 is connected between the second end of the buffer tube 100 and the receiving tube, so that the buffer tube 100 is connected to the receiving tube through the installation channel 211, and the gas source buffer channel 212 is connected to an external gas source.

[0040] Since the first end of the buffer tube 100 is positioned opposite the outlet of the transmission tube, and the second end of the buffer tube 100 is connected to the receiving conduit via the installation channel 211, the gas source buffer channel 212 is connected to the installation channel 211, and the gas source buffer channel 212 is connected to an external gas source, when the filter rod is sampled, the external gas source supplies gas into the buffer tube 100 through the gas source buffer channel 212 and the installation channel 211 to form a buffered airflow. As the sampled filter rod falls from the transmission tube into the buffer tube 100 under the action of the high-pressure gas, and then falls from the buffer tube 100 through the installation channel 211 into the receiving conduit, the buffered airflow acts as a buffer, reducing the impact of the high-pressure gas and the distance between the transmission tube and the receiving conduit on the filter rod. This reduces the probability of deformation of the filter rod end face after it reaches the receiving conduit, thus ensuring the accuracy of subsequent filter rod physical property test results.

[0041] Preferably, the inner wall of the buffer tube 100 is provided with a storage groove 110, the storage groove 110 is located in the middle of the buffer tube 100, and a filter rod sensor capable of communicating with an external air source is provided in the storage groove 110.

[0042] Combination Figure 1As shown, the filter rod sensor is used to sense whether the filter rod being extracted from the transmission tube has fallen into the buffer tube 100. When the filter rod sensor detects that the filter rod has fallen into the buffer tube 100, it sends an air supply signal to the external air source. The external air source immediately starts supplying gas to the air source buffer channel 212, ensuring that a buffered airflow can be formed in the buffer tube 100 in a timely manner to buffer the current filter rod. When the filter rod sensor detects that no filter rod has fallen into the transmission tube, the external air source is temporarily in a dormant or shut-off state, thereby reducing energy consumption. Since the filter rod sensor is set in the storage slot 110, interference between the filter rod and the filter rod sensor can be avoided during the process of the filter rod falling into the receiving tube through the buffer tube 100, further reducing the probability of filter rod deformation. The filter rod sensor can be adaptively set as a displacement sensor, acceleration sensor, etc., according to actual needs. This embodiment does not make specific limitations. The specific structure and working principle of the sensor refer to the existing technology and are not specifically limited here.

[0043] In order to facilitate observation and timely monitoring of the descent of the filter rod in the buffer tube 100, the buffer tube 100 is set as a transparent tube in this embodiment. The material of the transparent tube can be adapted to actual needs, such as transparent glass or acrylic.

[0044] Alternatively, a viewing window may be provided on the buffer tube 100, extending in the vertical direction.

[0045] In addition, in this embodiment, the outer diameter of the buffer tube 100 is 3.5 to 5 times its inner diameter. This design avoids the buffer tube 100 from breaking during the buffering process due to excessively thin sidewalls, thus ensuring the buffering effect. Simultaneously, it avoids increasing the production cost of the buffer tube 100 and the buffering mechanism due to excessively thick sidewalls. In other embodiments, the outer and inner diameters of the buffer tube 100 can be adapted to actual needs and are not limited to this embodiment.

[0046] Preferably, along the direction from bottom to top, the installation channel 211 is sequentially configured as a first cylindrical channel 2111, a buffer frustum channel 2112, and a second cylindrical channel 2113 that are interconnected, with a first abutment platform formed between the buffer frustum channel 2112 and the second cylindrical channel 2113; the receiving conduit can be connected to the first cylindrical channel 2111, the gas source buffer channel 212 is connected to the buffer frustum channel 2112, the second end of the buffer tube 100 is inserted into the second cylindrical channel 2113 and abuts against the first abutment platform, and the inner diameter of the upper end of the buffer frustum channel 2112 is equal to the inner diameter of the buffer tube 100.

[0047] Combination Figure 1 and Figure 2As shown, from bottom to top, the diameter of the buffer frustum channel 2112 gradually decreases. The gas source buffer channel 212 is connected to the buffer frustum channel 2112 to avoid interference between the gas source buffer channel 212 and the receiving conduit connected to the first cylindrical channel 2111, and the buffer tube 100 inserted into the second cylindrical channel 2113, thereby ensuring the gas delivery effect from the external gas source to the buffer frustum channel 2112. When the second end of the buffer tube 100 abuts against the first contact platform, the second end of the buffer tube 100 is directly connected to the upper end of the buffer frustum channel 2112. Since the inner diameter of the upper end of the buffer frustum channel 2112 is equal to the inner diameter of the buffer tube 100, a step can be avoided between the second end of the buffer tube 100 and the upper end of the buffer frustum channel 2112. This prevents turbulence from occurring between the first end of the buffer tube 100 and the upper end of the buffer frustum channel 2112, thus ensuring the buffering effect on the filter rod. At the same time, since the diameter of the buffer frustum channel 2112 gradually decreases from bottom to top, the sidewall of the buffer frustum channel 2112 guides the gas entering the buffer frustum channel 2112, further enhancing the buffering effect on the filter rod. The second end of the buffer tube 100 is directly inserted into the second cylindrical channel 2113, which can ensure the connection strength and stability between the mounting part 210 and the buffer tube 100, and improve the sealing between the buffer tube 100 and the buffer frustum channel 2112.

[0048] To further improve the installation stability of the buffer mechanism, the mounting part 210 is provided with a mounting threaded hole, and the mounting threaded connector 310 passes through the mounting threaded hole to fix the mounting part 210 and the receiving conduit to the automatic sampling and transmission device.

[0049] Furthermore, the mounting assembly 200 also includes a first sealing ring 220, and the second end of the buffer tube 100 is configured with an outer diameter smaller than that of the first connecting section 120 in the middle of the buffer tube 100; the first sealing ring 220 is fitted onto the first connecting section 120 and abuts against the inner wall of the second cylindrical channel 2113.

[0050] Specific combination Figure 2As shown, a first receiving groove extending circumferentially is provided on the first connecting segment 120. A first sealing ring 220 is sleeved on the first connecting segment 120 and located within the first receiving groove. The first sealing ring 220 abuts against the inner wall of the second cylindrical channel 2113 to further improve the sealing performance between the buffer tube 100 and the buffer frustum channel 2112. A first step is formed between the first connecting segment 120 and the middle of the buffer tube 100. When the second end of the buffer tube 100 is inserted into the second cylindrical channel 2113, the first step abuts against the upper end face of the mounting member 210, thereby preventing the first sealing ring 220 from detaching from the first connecting segment 120, and further ensuring the sealing effect between the buffer tube 100 and the buffer frustum channel 2112. The number of first sealing rings 220 provided on the first connecting segment 120 can be increased or decreased according to actual needs, and is not specifically limited in this embodiment.

[0051] Preferably, the mounting assembly 200 further includes a connecting pipe (not shown in the figure), through which the gas source buffer channel 212 is connected to an external gas source, and a flow regulating valve (not shown in the figure) is provided on the connecting pipe. By setting the flow regulating valve, the flow regulating valve can be adjusted according to the specifications of the filter rod being inspected, thereby controlling the amount of gas delivered from the external gas source into the buffer pipe 100, so as to adaptively change the intensity of the buffer airflow, further improving the buffering effect on the filter rod, and preventing the filter rod from failing to fall into the receiving conduit due to excessively strong buffer airflow.

[0052] The number of gas source buffer channels 212 can be adjusted according to actual needs; it can be one, three, five, etc. For ease of understanding, this embodiment will use two gas source buffer channels 212 as an example. (Specifically combined with...) Figure 2 and Figure 4 As shown, two gas source buffer channels 212 are provided, evenly spaced along the circumference of the buffer frustum channel 2112. The axes of the two gas source buffer channels 212 are on the same horizontal plane and symmetrically arranged about the axis of the buffer frustum channel 2112, and both are connected to an external gas source. This ensures that the amount of gas input to all parts of the buffer frustum channel 2112 is equal, avoiding collisions between the filter rod and the inner wall of the buffer tube 100 due to uneven gas distribution. In this embodiment, the two gas source buffer channels 212 are connected to the external gas source through the same connecting pipe. In other embodiments, two connecting pipes, each connected to an external gas source, may be provided, with a flow regulating valve on each connecting pipe, and the two gas source buffer channels 212 are connected to the two connecting pipes in a one-to-one correspondence.

[0053] Preferably, the buffer mechanism further includes a connecting component 300, which includes a connector 310 and a connecting channel 311. The first end of the buffer tube 100 is connected to the automatic sampling and transmission device through the connector 310 so that the relative position of the buffer tube 100 and the transmission tube is fixed.

[0054] The connector 310 is provided with multiple threaded holes. The fixed threaded connector 310 passes through the corresponding threaded holes to fix the connector 310 and the transmission tube to the automatic sampling and transmission device, so that the relative position of the buffer tube 100 and the transmission tube is fixed. When the filter rod falls from the transmission tube into the buffer tube 100, it is avoided that the filter rod falls outside the buffer tube 100 due to the change in the relative position of the buffer tube 100 and the transmission tube.

[0055] Preferably, the connecting channel 311 is configured as a third cylindrical channel 3111 and a guide frustum channel 3112 that are interconnected. From bottom to top, the diameter of the guide frustum channel 3112 gradually increases, and a second abutment is formed between the third cylindrical channel 3111 and the guide frustum channel 3112. The first end of the buffer tube 100 is inserted into the third cylindrical channel 3111 and abuts against the second abutment. The inner diameter of the buffer tube 100 is equal to the inner diameter of the lower end of the guide frustum channel 3112. The upper end of the guide frustum channel 3112 is positioned opposite to the outlet of the transmission tube.

[0056] Combination Figure 3 As shown, the guide frustum channel 3112 has an inverted trapezoidal cross-section in its radial direction, that is, the guide frustum channel 3112 is funnel-shaped. The guide frustum channel 3112 guides the filter rods that are about to fall into the buffer tube 100 in the conveying pipe, guiding the filter rods to fall more smoothly into the buffer tube 100. When the first end of the buffer tube 100 abuts against the second abutment platform, the first end of the buffer tube 100 is directly connected to the lower end of the guide frustum channel 3112. Since the inner diameter of the lower end of the guide frustum channel 3112 is equal to the inner diameter of the buffer tube 100, a step can be avoided between the first end of the buffer tube 100 and the upper end of the guide frustum channel 3112. When the filter rods fall into the buffer tube 100 through the guide frustum channel 3112, collisions and temporary retention between the first end of the buffer tube 100 and the upper end of the guide frustum channel 3112 can be avoided, thereby ensuring the conveying effect of the filter rods. The first end of the buffer tube 100 is directly inserted into the third cylindrical channel 3111, which can ensure the connection strength and stability between the connector 310 and the buffer tube 100, and improve the sealing between the buffer tube 100 and the guide frustum channel 3112.

[0057] Furthermore, the connecting assembly 300 also includes a second sealing ring 320, and the first end of the buffer tube 100 is configured with an outer diameter smaller than that of the second connecting section 130 in the middle of the buffer tube 100; the second sealing ring 320 is sleeved on the second connecting section 130 and abuts against the inner wall of the third cylindrical channel 3111.

[0058] Combination Figure 3 As shown, a second receiving groove extending circumferentially is provided on the second connecting section 130. The second sealing ring 320 is sleeved on the second connecting section 130 and located within the second receiving groove. The second sealing ring 320 abuts against the inner wall of the third cylindrical channel 3111. This further improves the sealing performance between the buffer tube 100 and the guide frustum channel 3112. A second step is formed between the second connecting section 130 and the middle of the buffer tube 100. When the second end of the buffer tube 100 is inserted into the third cylindrical channel 3111, the second step abuts against the lower end face of the connector 310, thereby preventing the second sealing ring 320 from detaching from the second connecting section 130, and further ensuring the sealing effect between the buffer tube 100 and the guide frustum channel 3112. The number of second sealing rings 320 provided on the second connecting section 130 can be increased or decreased according to actual needs, and is not specifically limited in this embodiment.

[0059] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A buffer mechanism, disposed in an automatic sampling and transmission device, and located between the transmission tube and the receiving conduit in the automatic sampling and transmission device, characterized in that, include: A buffer tube (100) is provided with its first end facing the outlet of the transmission tube, and the filter rod in the transmission tube can fall into the first end of the buffer tube (100). The mounting assembly (200) includes a mounting component (210), which is provided with a mounting channel (211) and a gas source buffer channel (212) communicating with the mounting channel (211). The mounting component (210) is connected between the second end of the buffer tube (100) and the receiving conduit, so that the buffer tube (100) is connected to the receiving conduit through the mounting channel (211), and the gas source buffer channel (212) is connected to an external gas source.

2. The buffer mechanism according to claim 1, characterized in that, The inner wall of the buffer tube (100) is provided with a storage groove (110), the storage groove (110) is located in the middle of the buffer tube (100), and a filter rod sensor that can communicate with the external air source is provided in the storage groove (110).

3. The buffer mechanism according to claim 1, characterized in that, The buffer tube (100) is configured as a transparent tube, or the buffer tube (100) is provided with a viewing window.

4. The buffer mechanism according to claim 1, characterized in that, Along the direction from bottom to top, the installation channel (211) is sequentially configured as a first cylindrical channel (2111), a buffer frustum channel (2112), and a second cylindrical channel (2113) that are interconnected, and a first abutment platform is formed between the buffer frustum channel (2112) and the second cylindrical channel (2113); The receiving conduit can communicate with the first cylindrical channel (2111), the gas source buffer channel (212) is connected with the buffer frustum channel (2112), the second end of the buffer tube (100) is inserted into the second cylindrical channel (2113) and abuts against the first abutment platform, and the inner diameter of the upper end of the buffer frustum channel (2112) is equal to the inner diameter of the buffer tube (100).

5. The buffer mechanism according to claim 4, characterized in that, The mounting assembly (200) also includes a first sealing ring (220), and the second end of the buffer tube (100) is configured with an outer diameter smaller than that of a first connecting section (120) in the middle of the buffer tube (100); The first sealing ring (220) is fitted onto the first connecting section (120) and abuts against the inner wall of the second cylindrical channel (2113).

6. The buffer mechanism according to claim 4, characterized in that, The installation assembly (200) also includes a connecting pipe, through which the air source buffer channel (212) is connected to the external air source, and a flow regulating valve is provided on the connecting pipe.

7. The buffer mechanism according to claim 4, characterized in that, Multiple air source buffer channels (212) are provided, and the multiple air source buffer channels (212) are evenly spaced along the circumference of the buffer frustum channel (2112), and all of them are connected to the external air source.

8. The buffer mechanism according to claim 1, characterized in that, The buffer mechanism further includes a connecting component (300), which includes a connector (310) and a connecting channel (311). The first end of the buffer tube (100) is connected to the automatic sampling and transmission device through the connector (310) so that the relative position of the buffer tube (100) and the transmission tube is fixed.

9. The buffer mechanism according to claim 8, characterized in that, The connecting channel (311) is configured as a third cylindrical channel (3111) and a guide frustum channel (3112) that are interconnected. From bottom to top, the diameter of the guide frustum channel (3112) gradually increases, and a second abutment is formed between the third cylindrical channel (3111) and the guide frustum channel (3112). The first end of the buffer tube (100) is inserted into the third cylindrical channel (3111) and abuts against the second abutment platform. The inner diameter of the buffer tube (100) is equal to the inner diameter of the lower end of the guide frustum channel (3112). The upper end of the guide frustum channel (3112) is positioned opposite to the outlet of the transmission tube.

10. The buffer mechanism according to claim 9, characterized in that, The connecting assembly (300) further includes a second sealing ring (320), and the first end of the buffer tube (100) is configured as a second connecting section (130) with an outer diameter smaller than that of the middle part of the buffer tube (100); The second sealing ring (320) is fitted onto the second connecting section (130) and abuts against the inner wall of the third cylindrical channel (3111).

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