Sampling method and sampling device

Abstract

The present application discloses a sampling method and a sampling device, belonging to the technical field of liquid detection equipment, and is used to improve the liquid suction accuracy and liquid suction efficiency. The main technical solution of the present application is as follows: The sampling method includes: S101: Transfer the sampling bottle to the liquid taking station; S201: Drive the sampling bottle to move downward for a first stroke, so that the sampling needle is inserted into the sampling bottle; S301: Drive the sampling bottle to move downward for a second stroke again to compress the sampling bottle; S401: Drive the sampling bottle to move upward for a second stroke to stretch the sampling bottle; S501: Observe the liquid level of the sampling bottle and determine whether the liquid level reaches a preset height. When the liquid level is lower than the preset height, repeat steps S301 and S401. If the liquid level is higher than the preset height, drive the sampling bottle to move upward for a first stroke again; S601: Transfer the sampling bottle to the transfer station; S701: Transport the sampling bottle to a designated position.

Description

Technical Field

[0001] This application belongs to the technical field of liquid detection equipment, and specifically relates to a sampling method and a sampling device. Background Art

[0002] In many fields of liquid collection and analysis for liquids to be detected, sampling is a crucial basic operation. Traditional sampling methods usually involve using sampling bottles to obtain various liquids to be detected. However, there are many inconveniences and limitations in the prior art during the sampling process.

[0003] In the traditional sampling process, the sampling bottle often needs to be evacuated first, and this operation aims to create a negative pressure environment for subsequent liquid suction. The evacuation equipment and related operation steps not only increase the complexity of the entire sampling process but also require additional time costs. More critically, since evacuation and liquid suction are two relatively independent processes, it is inevitable that the sampling needle needs to be inserted into the sampling bottle twice. If the two insertions are inconsistent, such as differences in insertion position, angle, etc., there may be a risk of vacuum destruction. Once the vacuum is destroyed, it will directly affect the negative pressure state in the sampling bottle, and then lead to insufficient intake of the liquid to be sampled, unable to meet the required amount of the liquid to be detected for experiments or production. Moreover, serious vacuum destruction may also cause liquid leakage, not only resulting in waste of the liquid to be detected but also possibly polluting the sampling environment and surrounding equipment. Summary of the Invention

[0004] In view of this, this application provides a sampling method and a sampling device, and the main purpose is to improve the accuracy and efficiency of liquid suction.

[0005] To achieve the above purpose, this application mainly provides the following technical solutions:

[0006] In the first aspect of this application, a sampling method is provided, including:

[0007] S101: Transfer the sampling bottle to the liquid extraction station;

[0008] S201: Drive the sampling bottle to move downward for a first stroke, so that the sampling needle is inserted into the sampling bottle;

[0009] S301: Drive the sampling bottle to move downward again for a second stroke to compress the sampling bottle;

[0010] S401: Drive the sampling bottle to move upward for the second stroke to stretch the sampling bottle;

[0011] S501: Observe the liquid level of the sampling bottle and determine whether the liquid level reaches a preset height. When the liquid level is lower than the preset height, repeatedly execute step S301 and step S401. If the liquid level is higher than the preset height, drive the sampling bottle to move upward along the upward direction for the first stroke again;

[0012] S601: Transfer the sampling bottle to the transfer station;

[0013] S701: Transport the sampling bottle to a designated position.

[0014] In the second aspect of the present application, a sampling device is provided. The sampling device performs a sampling operation by using the above-mentioned sampling method. The sampling device includes:

[0015] A handling component and a lifting component;

[0016] The handling component is used to clamp the sampling bottle and transfer the sampling bottle to the liquid sampling station. The sampling needle communicated with the liquid pipeline is arranged at the liquid sampling station;

[0017] The lifting component is arranged opposite to the sampling needle. The lifting component is used to clamp the sampling bottle transferred to the liquid sampling station and drive the sampling bottle to lift and lower;

[0018] The sampling bottle has an elastic structure. The sampling bottle can be compressed and stretched along the height direction of the sampling bottle. When the lifting component drives the sampling bottle to descend, the sampling needle is inserted into the sampling bottle, and the gas inside the sampling bottle is discharged through the sampling needle. The sampling bottle is in a compressed state. When the lifting component drives the sampling bottle to ascend, the sampling bottle is in a stretched state. The sampling bottle is used to suck the liquid to be detected from the liquid pipeline through the sampling needle.

[0019] Optionally, when the lifting component drives the sampling bottle to lift and lower, the center of the sampling bottle coincides with the sampling needle.

[0020] Optionally, the sampling bottle includes a corrugated pipe section and a straight pipe section. The corrugated pipe section has an elastic structure, and the straight pipe section has a rigid structure.

[0021] Optionally, the outer diameter of the corrugated pipe section is greater than the outer diameter of the straight pipe section. A first boss is arranged at one end of the corrugated pipe section away from the straight pipe section, and a second boss is arranged at one end of the straight pipe section away from the corrugated pipe section.

[0022] Optionally, a bottle stopper is arranged at the bottle mouth of the sampling bottle. The bottle stopper is made of an elastic material. An annular convex structure is arranged on the outer peripheral surface of the bottle stopper. The annular convex structure is used to fit with the inner surface of the bottle mouth to seal the sampling bottle.

[0023] Optionally, the stopper includes a first surface and a second surface facing away from each other. The first surface and the second surface are both recessed in the direction towards the inside of the sampling bottle and away from the sampling needle in the natural state and the assembled state.

[0024] Optionally, the handling assembly is further configured to transfer the sampling bottle carrying the liquid to be detected to the transfer station. A transfer assembly is provided at the transfer station. The transfer assembly is configured to receive the sampling bottle transferred to the transfer station and transport the sampling bottle to the designated position.

[0025] Optionally, the sampling device further includes:

[0026] A sampling cabinet;

[0027] The sampling cabinet is configured to construct an independent and enclosed accommodation space. The handling assembly, the lifting assembly, and the transfer assembly are disposed in the accommodation space. Observation windows are respectively provided on the cabinet structure of the sampling cabinet at positions corresponding to the liquid extraction station and the transfer station.

[0028] Optionally, the sampling bottle is made of a transparent TPU material.

[0029] By means of the above technical solutions, the present application has at least the following beneficial effects:

[0030] The embodiments of the present application provide a sampling method and a sampling device. By compressing and stretching the sampling bottle to generate negative pressure for sucking liquid, no additional vacuum pumping equipment is required. The sampling needle is inserted only once, eliminating the problems of insufficient liquid suction volume and liquid leakage caused by the vacuum breakage of the sampling bottle due to multiple insertions of the sampling needle, ensuring that a sufficient amount of liquid can be stably obtained each time for sampling, and improving the accuracy and reliability of experimental or production data. Further, since the vacuum pumping and related complex preparation work are omitted, and the sampling operation can be completed quickly and accurately, the sampling time of the liquid to be detected is greatly shortened, the overall work efficiency can be significantly improved, the experimental process or production process can be accelerated, and resources can be more fully utilized. Description of the Drawings

[0031] Figure 1 It is a flowchart of the sampling method of an optional embodiment of the present application;

[0032] Figure 2 It is a schematic structural diagram of the sampling device of an optional embodiment of the present application;

[0033] Figure 3 It is a schematic structural diagram of the sampling bottle of an optional embodiment of the present application;

[0034] Figure 4Schematic structural diagram of the bottle stopper of an alternative embodiment of the present application;

[0035] Figure 5 Schematic structural diagram of the bottle stopper of another alternative embodiment of the present application.

[0036] The reference numerals are shown as:

[0037] 1. Sampling bottle; 11. Bellows section; 111. First boss; 12. Straight pipe section; 121. Second boss; 13. Bottle stopper; 131. Annular protrusion structure; 132. First surface; 133. Second surface; 2. Handling assembly; 3. Lifting assembly; 4. Sampling needle; 5. Liquid pipeline; 6. Liquid taking station; 7. Transmission station; 8. Transmission assembly; 9. Sampling cabinet. Detailed implementation manners

[0038] The exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present application can be more thoroughly understood and the scope of the present application can be completely conveyed to those skilled in the art.

[0039] Refer to Figure 1 As shown, the embodiments of the present application provide a sampling method, including:

[0040] S101: Transfer the sampling bottle 1 to the liquid taking station 6.

[0041] Here, step S101 is the starting operation of the entire sampling process. Through a specific transfer device, such as a robotic arm, conveyor belt, or rail slider, the empty sampling bottle 1 is accurately moved from the initial placement position to the working area for sampling the liquid to be detected, that is, the liquid taking station 6. The liquid taking station 6 can be equipped with corresponding clamping devices to ensure that the sampling bottle 1 can be kept stable and in a suitable position during subsequent operations, and to prepare for the accurate insertion of the sampling needle 4 into the sampling bottle 1.

[0042] S201: Drive the sampling bottle 1 to move downward for a first stroke so that the sampling needle 4 is inserted into the sampling bottle 1.

[0043] Here, when the sampling bottle 1 reaches the liquid-taking station 6 and is accurately positioned, the driving device is activated, such as an electric push rod, a cylinder, or a screw-nut mechanism, etc., to move the sampling bottle 1 along a pre-set downward movement path for a specific first stroke distance. The purpose of this first stroke is to enable the sampling needle 4 to smoothly penetrate the sealing component of the sampling bottle 1, such as a rubber stopper or a bottle cap, and enter the interior of the sampling bottle 1. At the same time, it is ensured that the sampling needle 4 will not cause excessive damage or interference to the sampling bottle 1 during the insertion process, and can maintain a relatively stable insertion position and angle for subsequent aspiration of the liquid to be detected.

[0044] S301: Drive the sampling bottle 1 to move downward for a second stroke again to compress the sampling bottle 1.

[0045] Here, when the sampling needle 4 successfully inserts into the sampling bottle 1, continue to use the driving device to move the sampling bottle 1 further downward for a second stroke. During this process, since the sampling bottle 1 can be compressed and stretched, and there are structures or devices outside the sampling bottle 1 that limit its excessive deformation, such as fixed jigs, sleeves, etc., the internal space of the sampling bottle 1 will decrease as the bottle body is compressed. This compression action will expel the air inside the sampling bottle 1, thereby creating a certain degree of negative pressure environment inside the bottle. This negative pressure environment provides the pressure difference power for the subsequent liquid to be detected to be sucked into the sampling bottle 1, and it is one of the key steps in this sampling method to replace the traditional vacuum pumping operation.

[0046] S401: Drive the sampling bottle 1 to move upward for a second stroke to stretch the sampling bottle 1.

[0047] Here, when the compression of the sampling bottle 1 is completed, immediately drive the sampling bottle 1 in the reverse direction to move it upward for the same second stroke distance as the previous compression stroke to perform the stretching operation on the sampling bottle 1. At this time, due to the negative pressure formed during the previous compression and the elastic restoring force of the sampling bottle 1, the external liquid to be detected will be sucked into the interior of the sampling bottle 1 through the sampling needle 4 under the action of the pressure difference. The stretching action helps to further enhance the negative pressure effect, promotes the more smooth inflow of the liquid to be detected into the sampling bottle 1, and can make the liquid to be detected in the sampling bottle 1 more evenly distributed, reduce the generation of bubbles, and improve the accuracy and stability of sampling.

[0048] S501: Observe the liquid level of the sampling bottle 1 and judge whether the liquid level reaches the preset height. When the liquid level is lower than the preset height, repeat steps S301 and S401. If the liquid level is higher than the preset height, drive the sampling bottle 1 to move upward for the first stroke again.

[0049] Here, when the liquid to be detected starts to enter the sampling bottle 1, the liquid level height in the sampling bottle 1 can be monitored in real time through visual inspection or a liquid level sensor, such as an optical liquid level sensor, a capacitive liquid level sensor, or an ultrasonic liquid level sensor. The monitored liquid level height is compared with a pre-set target liquid level height, i.e., the preset height. If the liquid level is lower than the preset height, it means that the sampling volume has not reached the requirement. At this time, the compression step of S301 and the stretching step of S401 need to be repeated to continue increasing the negative pressure in the sampling bottle 1 to suck in more liquid to be detected until the liquid level reaches or exceeds the preset height. When the liquid level is higher than the preset height, it indicates that enough liquid to be detected has been obtained. At this time, the sampling bottle 1 is driven to move upward by the first stroke again to return the sampling bottle 1 to the relative position when it was not inserted by the sampling needle 4, so as to transfer the sampling bottle 1 out of the liquid sampling station 6 subsequently, and at the same time, it also avoids the sampling needle 4 being immersed in the liquid to be detected for a long time under unnecessary circumstances, reducing the risk of contamination and damage.

[0050] S601: Transfer the sampling bottle 1 to the transfer station 7.

[0051] Here, when the sampling bottle 1 has completed sampling and the liquid level meets the requirement, the transfer device, such as a robotic arm or other transfer mechanism, is started again to carry the sampling bottle 1 from the liquid sampling station 6 to the transfer station 7. The transfer station 7 can be an intermediate position connecting to subsequent processing areas, such as a laboratory for analyzing the liquid to be detected, a storage area for the liquid to be detected, etc. It is equipped with corresponding transfer devices to ensure the stability and accuracy of the sampling bottle 1 during the transfer process, preventing the liquid to be detected from leaking or being contaminated due to shaking or collision.

[0052] S701: Transport the sampling bottle 1 to the designated position.

[0053] Here, when the sampling bottle 1 is transferred to the transfer station 7, the sampling bottle 1 is transported to the final designated position along a predetermined route through a series of transfer devices, such as a conveyor belt, a rail system, or an automated trolley. The designated position can be the inlet of an instrument for analyzing the liquid to be detected, a specific position on a storage rack for the liquid to be detected, or other specific locations related to subsequent operations. The entire transportation process needs to ensure the integrity of the sampling bottle 1 and the safety of the liquid to be detected, avoiding affecting the quality of the liquid to be detected and the accuracy of the detection results due to unexpected situations during transportation.

[0054] The sampling method provided by the embodiments of the present application generates negative pressure to suck the liquid to be detected through the compression and stretching actions of the sampling bottle 1, without the need for additional vacuum pumping equipment. The sampling needle 4 is inserted only once, eliminating the problems of insufficient liquid suction and liquid leakage caused by the vacuum breakage of the sampling bottle 1 due to multiple insertions of the sampling needle 4, ensuring that a sufficient amount of liquid can be stably obtained each time of sampling, and improving the accuracy and reliability of experimental or production data. Further, since the vacuum pumping and related complex preparation work are omitted, and the sampling operation can be completed quickly and accurately, the sampling time of the liquid to be detected is greatly shortened, the overall work efficiency can be significantly improved, the experimental process or production process can be accelerated, and the resources can be utilized more fully.

[0055] As Figure 1 a specific implementation of the sampling method shown, the embodiments of the present application further provide a sampling device. Refer to Figure 2 and Figure 3 shown, the sampling device includes: a handling component 2 and a lifting component 3; the handling component 2 is used to clamp the sampling bottle 1 and transfer the sampling bottle 1 to the liquid taking station 6, and a sampling needle 4 communicating with the liquid pipeline 5 is arranged at the liquid taking station 6; the lifting component 3 is arranged opposite to the sampling needle 4, and the lifting component 3 is used to clamp the sampling bottle 1 transferred to the liquid taking station 6 and drive the sampling bottle 1 to lift and lower; the sampling bottle 1 is of an elastic structure and can be compressed and stretched along the height direction of the sampling bottle 1. When the lifting component 3 drives the sampling bottle 1 to descend, the sampling needle 4 is inserted into the sampling bottle 1, and the internal gas of the sampling bottle 1 is discharged through the sampling needle 4, and the sampling bottle 1 is in a compressed state. When the lifting component 3 drives the sampling bottle 1 to ascend, the sampling bottle 1 is in a stretched state, and the sampling bottle 1 is used to suck the liquid to be detected from the liquid pipeline 5 through the sampling needle 4.

[0056] In this embodiment, by setting up the handling component 2, the sampling bottle 1 can be accurately clamped and transferred to the liquid-taking station 6, realizing automated or semi-automated operation. Compared with manual handling of the sampling bottle 1, the efficiency and accuracy of transfer are greatly improved. By setting up the lifting component 3 opposite to the sampling needle 4, the lifting movement of the sampling bottle 1 can be precisely controlled, ensuring that the sampling needle 4 can accurately insert into the sampling bottle 1, which is beneficial to the stable suction of the liquid to be detected and avoids damage to the sampling bottle 1 or poor insertion position of the sampling needle 4 due to inaccurate operation, affecting subsequent sampling. By setting the sampling bottle 1 as an elastic structure, it can be compressed and stretched along the height direction. When the lifting component 3 drives the sampling bottle 1 to descend, the gas inside the sampling bottle 1 is discharged through the sampling needle 4, creating a negative pressure environment inside the bottle. This method of generating negative pressure through physical means has the advantages of simplicity and high efficiency compared to traditional vacuum equipment for creating a negative pressure environment. Traditional vacuum equipment not only has high costs and large volumes, but also has complex operations and requires additional maintenance and calibration. However, this device utilizes the elasticity of the sampling bottle 1 itself to naturally form and utilize negative pressure during the descent and ascent processes, making the structure of the device more compact and the operation more convenient. When the sampling bottle 1 ascends, the sampling bottle 1 in a stretched state can further enhance the negative pressure effect, prompting the liquid to be detected to be smoothly sucked from the liquid pipeline 5 into the sampling bottle 1 through the sampling needle 4. This dynamic negative pressure suction method using an elastic structure can better adapt to different types of liquids to be detected, such as liquids with different viscosities, improving the flexibility and reliability of sampling.

[0057] Among them, the handling component 2 is used to clamp the sampling bottle 1 and accurately transfer it from the initial placement position to the liquid-taking station 6. The handling component 2 is equivalent to the "transporter" of the entire sampling process and realizes this function through specific mechanical structures and driving methods. For example, the handling component 2 may adopt a structure similar to a mechanical gripper. The mechanical gripper can be adaptively adjusted according to the shape of the sampling bottle 1 to firmly grasp the sampling bottle 1 and prevent situations such as slipping during transfer. Its driving can rely on a robotic arm, an electric push rod, a cylinder, or a motor combined with a transmission device, such as a belt, a chain, or a lead screw, to provide power, so as to accurately deliver the sampling bottle 1 to the liquid-taking station 6 according to the preset trajectory and speed.

[0058] Specifically, in this embodiment, the handling component 2 includes a robotic arm and a mechanical gripper. The mechanical gripper is arranged at the execution end of the robotic arm, and the robotic arm has at least three degrees of freedom. It can be understood that the at least three degrees of freedom possessed by the robotic arm endow the robotic arm with the ability to move flexibly in three-dimensional space, enabling the mechanical gripper to accurately position and grasp the sampling bottle 1 in different positions and postures. The at least three degrees of freedom usually can include translational movements along the X, Y, and Z axes and rotational movements around some of these axes. Through the combination of these movements, the robotic arm can accurately grasp the sampling bottle 1 from the storage area or the position of the previous process, and then transfer it along a predetermined path to the liquid sampling station 6, and ensure that when placing, the sampling bottle 1 and the clamping device and the sampling needle 4 at the liquid sampling station 6 are in an accurate relative position relationship, and the error can be controlled within a very small range, providing a highly reliable starting condition for the subsequent sampling operation. As a component that directly contacts and grasps the sampling bottle 1, the shape and size of the mechanical gripper are adapted to the outer contour of the sampling bottle 1, and it can apply the grasping force evenly, ensuring that the sampling bottle 1 will not slip during handling and will not be damaged due to excessive squeezing. The opening and closing action of the mechanical gripper can be controlled by driving methods such as pneumatic, electric, or hydraulic, and has a certain sensing feedback mechanism, which can monitor the closing state of the gripper and the grasping force on the sampling bottle 1 in real time. Once an abnormal situation occurs, such as too large or too small grasping force, position deviation of the sampling bottle 1, etc., the system can issue an alarm in time and make corresponding adjustments, further improving the safety and stability of the handling process.

[0059] Among them, the liquid sampling station 6 is a specific area for subsequent liquid sampling operations. A sampling needle 4 connected to the liquid pipeline 5 is preset on the liquid sampling station 6. The handling component 2 needs to ensure that the sampling bottle 1 can be accurately placed in the appropriate position, so that when the sampling bottle 1 is in place, it can be in the correct relative position relationship with the sampling needle 4, facilitating the subsequent corresponding operations of the lifting component 3, and then enabling the sampling needle 4 to smoothly insert into the sampling bottle 1 to carry out the sampling work.

[0060] Among them, the lifting component 3 is arranged opposite to the sampling needle 4. The lifting component 3 is used to clamp the sampling bottle 1 that has been transferred to the liquid sampling station 6 by the handling component 2 and drive it to move up and down in the vertical direction, that is, the height direction of the sampling bottle 1. The clamping function of the lifting component 3 can also be realized by means of a suitable mechanical structure such as a gripper, etc., to ensure that the sampling bottle 1 can be stably fixed during the lifting process, avoiding situations such as shaking and deviation that affect sampling.

[0061] Specifically, when the lifting assembly 3 drives the sampling bottle 1 to descend, due to the relative position of the sampling bottle 1 and the sampling needle 4, the sampling needle 4 will be accurately inserted into the sampling bottle 1. In this process, because the sampling bottle 1 is an elastic structure, as the descending action continues, the gas originally existing inside the sampling bottle 1 will be discharged into the feed liquid pipeline 5 through the inserted sampling needle 4. The feed liquid pipeline 5 can be connected to the bottom of the tank container storing the liquid to be tested, so that the gas inside the sampling bottle 1 is discharged into the top of the tank container to ensure that the feed liquid pipeline 5 is still full of the liquid to be tested. At this time, the sampling bottle 1 is in a compressed state, its internal space gradually decreases, and the air pressure also decreases accordingly, so that a negative pressure environment is naturally formed inside the sampling bottle 1. When the lifting assembly 3 drives the sampling bottle 1 to rise, relying on the elasticity of the sampling bottle 1 itself, the sampling bottle 1 will recover from the compressed state and enter the stretched state. During the stretching process, due to the negative pressure formed during the previous compression and the suction force generated by the elastic recovery of the sampling bottle 1, the liquid to be tested in the liquid pipeline 5 will be smoothly sucked into the sampling bottle 1 through the sampling needle 4 under the action of the pressure difference. Through such rhythmic lifting and lowering actions, that is, repeated compression and stretching, the liquid can be continuously sucked until the required sampling amount is reached.

[0062] Among them, the sampling bottle 1 can be made of a suitable elastic material (such as a special plastic material, etc.), or some elastic structures are used in the design of the sampling bottle 1, such as a wrinkled, retractable wall, etc., to achieve the compression and stretchability of the sampling bottle 1.

[0063] Among them, a fixed joint is provided at one end of the liquid feed pipeline 5 connected to the sampling needle 4, and the sampling needle 4 passes through the fixed joint and is relatively fixed to the fixed joint. In actual application, when the lifting component 3 drives the sampling bottle 1 to descend, and the sampling needle 4 is inserted into the sampling bottle 1, the sampling bottle 1 can abut against the fixed joint, so that the lifting component 3 can compress the sampling bottle 1 when continuing to drive the sampling bottle 1 to descend.

[0064] Specifically, a guide structure is provided on the side of the fixing joint close to the sampling bottle 1, and the center of the guide structure coincides with the sampling needle 4. When the lifting assembly 3 drives the sampling bottle 1 to descend, the guide structure relies on contact and interaction with the sampling bottle 1 to accurately guide the sampling bottle 1 along a predetermined path to approach the sampling needle 4, thereby ensuring that the bottle mouth of the sampling bottle 1 can be aligned with the sampling needle 4 with extremely high precision, thereby minimizing the risk of poor insertion of the sampling needle 4 or damage to the sampling bottle 1 due to position deviation.

[0065] In some possible implementations disclosed in this application, see Figure 3 As shown, when the lifting assembly 3 drives the sampling bottle 1 to rise and fall, the center of the sampling bottle 1 coincides with the sampling needle 4 .

[0066] In this embodiment, when the center of the sampling bottle 1 coincides with the sampling needle 4, during the process of driving the sampling bottle 1 to lift and lower by the lifting assembly 3, the sampling needle 4 can be vertically and accurately inserted into the center position of the sampling bottle 1. Thus, it is possible to avoid the rupture or damage of the sampling bottle 1 caused by improper insertion position, which may affect the sealing performance of the sampling bottle 1 and even lead to the leakage of the liquid to be detected.

[0067] Among them, the center of the sampling bottle 1 is the geometric center of the sampling bottle 1. When the sampling bottle 1 is cylindrical, the center of the sampling bottle 1 is located on the axis of the sampling bottle 1, and the axis of the sampling bottle 1 coincides with the sampling needle 4.

[0068] Specifically, when the lifting assembly 3 drives the sampling bottle 1 to lift and lower, the movement trajectory of the sampling bottle 1 is a straight line along the vertical direction. When the sampling bottle 1 starts to descend under the drive of the lifting assembly 3, the center of the sampling bottle 1 coincides with the sampling needle 4, so that the sampling needle 4 can be inserted into the sampling bottle 1 at the best angle and position. For some sampling bottles 1 with rubber stoppers, the sampling needle 4 needs to accurately penetrate the rubber stopper and enter the bottle. It can be understood that if the centers of the rubber stopper and the sampling needle 4 do not coincide, the sampling needle 4 may poke the rubber stopper off-center, resulting in uneven damage to the rubber stopper, affecting its subsequent sealing performance, and even causing rubber stopper fragments to fall into the bottle and contaminate the liquid to be detected. In addition, the insertion method with the centers coinciding can make the sampling needle 4 be in a position conducive to the uniform distribution of the liquid after entering the bottle. For example, when sucking the liquid, the liquid to be detected can be evenly sucked into the bottle around the sampling needle 4, avoiding the situation that the liquid to be detected is concentrated and sucked on one side due to the improper position of the sampling needle 4, resulting in disordered flow of the liquid to be detected in the bottle.

[0069] In some possible embodiments disclosed in the present application, as shown in Figure 3 the sampling bottle 1 includes a corrugated pipe section 11 and a straight pipe section 12. The corrugated pipe section 11 is an elastic structure, and the straight pipe section 12 is a rigid structure.

[0070] In this embodiment, the straight pipe section 12 is a rigid structure and plays a stable supporting role during the sampling process. When the corrugated pipe section 11 is compressed and stretched, the straight pipe section 12 can prevent the overall excessive deformation or bending of the sampling bottle 1 and ensure the stability of the sampling bottle 1 in the vertical direction. Especially after the sampling needle 4 is inserted, the rigid straight pipe section 12 can keep the relative position of the sampling bottle 1 and the sampling needle 4 stable, avoiding the displacement of the sampling needle 4 caused by the shaking or deformation of the sampling bottle 1, so as to ensure that the liquid to be detected can be smoothly sucked through the sampling needle 4 and maintain a stable sucking environment, reducing the error caused by external factor interference.

[0071] The bellows section 11 has a pleated shape similar to that of an accordion bellows, so that the bellows section 11 can be compressed and stretched in the vertical direction, that is, in the height direction of the sampling bottle 1. In actual applications, when the lifting assembly 3 drives the sampling bottle 1 to descend, the bellows section 11 will be compressed, the pleats will approach each other, and the volume of the internal space of the sampling bottle 1 will be reduced, so that the air in the sampling bottle 1 will be discharged, thereby forming a certain degree of negative pressure environment in the bottle, providing a pressure difference power for the subsequent liquid to be detected to be sucked into the sampling bottle 1. When the lifting assembly 3 drives the sampling bottle 1 to rise, the bellows section 11 will stretch under the action of its own elastic restoring force, the pleats will unfold, and the volume of the internal space will increase, prompting the liquid to be detected to flow into the sampling bottle 1 through the sampling needle 4.

[0072] The straight pipe section 12 is connected to the corrugated pipe section 11. The straight pipe section 12 is a rigid structure, which can maintain a fixed shape and size during the sampling process and is not prone to elastic deformation.

[0073] Specifically, in actual applications, when the transport component 2 and the lifting component 3 control the movement of the sampling bottle 1, the transport component 2 and the lifting component 3 act on the straight tube section 12 of the sampling bottle 1, thereby driving the overall movement of the sampling bottle 1. It should be noted that the straight tube section 12 provides a stable and reliable fulcrum for the transport component 2 and the lifting component 3, and the rigid structure of the straight tube section 12 makes it difficult to deform or displace when subjected to force, thereby ensuring the accuracy of the movement trajectory of the sampling bottle 1 during the transfer and lifting process. Whether transferring the sampling bottle 1 from the initial position to the liquid collection station 6, or performing lifting operations on the liquid collection station 6 to insert the sampling needle 4, absorb the liquid to be tested, etc., it can be completed with extremely high precision.

[0074] In the above embodiments, see Figure 3 As shown, the outer diameter of the bellows section 11 is greater than the outer diameter of the straight pipe section 12 , a first boss 111 is provided at one end of the bellows section 11 away from the straight pipe section 12 , and a second boss 121 is provided at one end of the straight pipe section 12 away from the bellows section 11 .

[0075] In this embodiment, when the sampling bottle 1 is transported in the conveying pipeline, since the outer diameter of the corrugated pipe section 11 is larger than that of the straight pipe section 12, and there are a first boss 111 and a second boss 121 at both ends respectively, this structure will form a specific gap between the sampling bottle 1 and the conveying pipeline. During the movement, external air can enter these gaps, and under certain speed and pressure conditions, the air will form an air layer similar to an "air cushion" between the sampling bottle 1 and the conveying pipeline, that is, an air bearing, thereby reducing the direct contact and friction between the sampling bottle 1 and the conveying pipeline, making the sampling bottle 1 more smooth during transportation, and being beneficial to extending the service life of the sampling bottle 1 and the conveying pipeline. It should be noted that during the transportation process, it is inevitable to encounter some vibrations or impact forces, such as the slight shaking of the conveying pipeline or the vibration transmitted from other equipment. At this time, the air bearing can effectively buffer these external forces to achieve the purpose of shock absorption.

[0076] Among them, the conveying pipeline can be a tubular structure for transporting the sampling bottle 1, providing a passage for the sampling bottle 1 to move from one position to another, and ensuring that the sampling bottle 1 can flow through the entire sampling system along a predetermined route. In this embodiment, the conveying pipeline provides a passage for the sampling bottle 1 to move from the transportation station 7 to the designated position.

[0077] Among them, the outer diameter of the corrugated pipe section 11 is larger than that of the straight pipe section 12, so that the corrugated pipe section 11 can more effectively control the change of the internal gas volume during the compression and stretching processes. For example, when the corrugated pipe section 11 is compressed, the larger outer diameter helps to more quickly discharge the internal gas to form sufficient negative pressure for sucking the liquid to be detected; while when stretched, more liquid to be detected can be inhaled. At the same time, the larger outer diameter of the corrugated pipe section 11 than that of the straight pipe section 12 makes it more conducive to the aggregation and bearing of air when the sampling bottle 1 forms an air bearing with the conveying pipeline, providing a greater lifting force, thereby ensuring the stable suspension state of the sampling bottle 1 in the conveying pipeline.

[0078] Specifically, in practical applications, when the sampling bottle 1 starts to move in the conveying pipeline, air will enter the gap between the sampling bottle 1 and the conveying pipeline from the inlet of the conveying pipeline or other gaps. The relatively large outer diameter of the corrugated pipe section 11 makes the gap between the corrugated pipe section 11 and the conveying pipeline relatively large, which can accommodate more air, while the relatively small outer diameter of the straight pipe section 12 restricts the air flow direction to a certain extent, enabling the air to form a stable pressure distribution in this annular gap, thus being conducive to the formation of an air bearing.

[0079] Among them, a first boss 111 is provided at one end of the bellows section 11, and the first boss 111 can serve as a reinforcing structure of the bellows section 11 to enhance the strength of the end of the bellows section 11. In practical applications, since the bellows section 11 is elastic, fatigue or deformation is likely to occur at the end during frequent compression and stretching. The first boss 111 can effectively disperse these stresses and protect the integrity of the bellows section 11. At the same time, the flow pattern of air between the sampling bottle 1 and the conveying pipeline is also changed by setting the first boss 111. When air enters the gap between the sampling bottle 1 and the conveying pipeline, the first boss 111 will cause the air to form a certain vortex around the sampling tube, which helps to further stabilize the pressure distribution of the air bearing and improve the load-bearing capacity of the air bearing.

[0080] Among them, a second boss 121 is provided at one end of the straight pipe section 12, and the second boss 121 can be used as a fulcrum for the transport component 2 and the lifting component 3. When the mechanical grippers of the transport component 2 and the lifting component 3 clamp the sampling bottle 1, the second boss 121 can enable the mechanical grippers to grasp the sampling bottle 1 more firmly, preventing the sampling bottle 1 from slipping during movement. At the same time, the second boss 121 will also affect the flow and pressure distribution of the air, and together with the first boss 111, the air forms a more complex but stable flow pattern in the gap between the sampling bottle 1 and the conveying pipeline, thereby enhancing the shock absorption effect of the air bearing.

[0081] In some possible implementations disclosed in this application, see Figure 3 and Figure 4 As shown, a bottle stopper 13 is provided at the bottle mouth of the sampling bottle 1. The bottle stopper 13 is made of elastic material. An annular protrusion structure 131 is provided on the outer peripheral surface of the bottle stopper 13. The annular protrusion structure 131 is used to fit with the inner surface of the bottle mouth to seal the sampling bottle 1.

[0082] In this embodiment, the annular protrusion structure 131 on the outer peripheral surface of the bottle stopper 13 fits tightly with the inner surface of the bottle mouth, which can effectively prevent the liquid to be detected from leaking from the sampling bottle 1. When the bottle stopper 13 is inserted into the bottle mouth, the annular protrusion structure 131 is squeezed by the inner surface of the bottle mouth, thereby elastically deforming, so that the protrusion part of the annular protrusion structure 131 is in closer contact with the inner surface of the bottle mouth, forming a good sealing interface.

[0083] The bottle mouth is the channel through which the inside of the sampling bottle 1 contacts the external environment, and the bottle stopper 13 provided at the bottle mouth is used to prevent the liquid to be tested from flowing out of the bottle, thereby ensuring the integrity of the sample in the sampling bottle 1 during storage and transportation.

[0084] Specifically, the bottle stopper 13 is made of an elastic material, which can be rubber or some elastic plastics, so that the bottle stopper 13 can undergo elastic deformation when subjected to an external force and can return to its original shape after the force disappears, thereby achieving a good sealing effect on the bottle mouth.

[0085] Among them, an annular protrusion structure 131 is provided on the outer peripheral surface of the bottle stopper 13. The annular protrusion structure 131 can be a protruding part that surrounds the outer periphery of the bottle stopper 13 for one circle. Its shape can be semi-circular, trapezoidal or other shapes suitable for fitting with the inner surface of the bottle mouth, as long as it can increase the contact area and sealing pressure between the bottle stopper 13 and the inner surface of the bottle mouth. This embodiment does not make any limitations in this regard.

[0086] Specifically, when the bottle stopper 13 is inserted into the bottle mouth of the sampling bottle 1, first, the main body part of the bottle stopper 13 starts to enter the bottle mouth. Since the bottle stopper 13 is made of an elastic material, the bottle stopper 13 can be deformed to a certain extent by the bottle mouth. As the bottle stopper 13 is continuously inserted, the outer annular protrusion structure 131 gradually approaches the inner surface of the bottle mouth. When the annular protrusion structure 131 contacts the inner surface of the bottle mouth, due to the continuous pushing of the bottle stopper 13, the annular protrusion structure 131 will be further squeezed by the inner surface of the bottle mouth. At this time, the annular protrusion structure 131 will undergo elastic deformation according to the shape of the inner surface of the bottle mouth, so that its shape fits closely with the inner surface of the bottle mouth, thereby forming a sealed contact surface between the protruding part of the annular protrusion structure 131 and the inner surface of the bottle mouth. During the process of the annular protrusion structure 131 fitting closely with the inner surface of the bottle mouth, a certain sealing pressure is generated due to elastic deformation. This pressure fills the tiny gap between the bottle stopper 13 and the bottle mouth, effectively preventing the passage of liquid and gas. At the same time, since the annular protrusion structure 131 surrounds the bottle stopper 13 for one week, a uniform sealing effect can be formed in the circumferential direction of the entire bottle mouth.

[0087] In some possible implementation embodiments disclosed in the present application, as shown in Figure 3 and Figure 5 the bottle stopper 13 includes a first surface 132 and a second surface 133 that face away from each other. The first surface 132 and the second surface 133 are recessed in the direction towards the inside of the sampling bottle 1 and away from the sampling needle 4 in both the natural state and the assembled state.

[0088] In this embodiment, the recess of the first surface 132 and the second surface 133 of the bottle stopper 13 in the direction towards the inside of the sampling bottle 1 can generate a reverse elastic force that prevents the liquid to be detected from flowing out, making the contact between the bottle stopper 13 and the sampling needle 4 closer when the sampling needle 4 is inserted into the bottle stopper 13, and forming an effective sealing area around the sampling needle 4.

[0089] Among them, the first surface 132 of the stopper 13 can be the end face of the stopper 13 away from one end of the sampling bottle 1, and the second surface 133 of the stopper 13 can be the end face of the stopper 13 directly contacting the liquid to be detected in the sampling bottle 1.

[0090] Among them, both the first surface 132 and the second surface 133 can be hemispherical curved surfaces sunken in the direction of the inside of the sampling bottle 1.

[0091] Specifically, the radius of the first surface 132 is smaller than the radius of the second surface 133. In terms of sealing performance, when the first surface 132 with a smaller radius contacts the sampling needle 4, it can provide a more concentrated sealing pressure. When the sampling needle 4 is inserted into the stopper 13, the hemispherical curved surface of the first surface 132 will quickly undergo elastic deformation. Its smaller radius makes the deformation area relatively smaller and easier to closely fit the outer periphery of the sampling needle 4, so that an extremely tight seal can be formed around the sampling needle 4, effectively preventing the liquid to be detected from leaking out from the contact area between the sampling needle 4 and the stopper 13. The larger radius of the second surface 133 can provide a more stable and large-area support when contacting the liquid to be detected in the bottle. When the liquid to be detected in the bottle is affected by external factors such as shaking and vibration, the larger area of the second surface 133 can evenly disperse the pressure of the liquid to be detected, further enhancing the sealing effect on the liquid to be detected, and cooperating with the first surface 132 to ensure that the entire stopper 13 can maintain good sealing performance in different directions. In addition, for the protection and adaptability of the sampling needle 4, the small radius of the first surface 132 helps to reduce the resistance and wear when the sampling needle 4 is inserted. Because its contact area is relatively small, the frictional force received by the sampling needle 4 during the insertion process is more evenly distributed, and it is not easy to cause scratches or damage to the surface of the sampling needle 4 due to excessive local frictional force. At the same time, it also enables the stopper 13 to better adapt to sampling needles 4 with different diameters. Due to the smaller radius of the first surface 132, when facing sampling needles 4 with different thicknesses, its elastic deformation range is relatively large, and it can more flexibly adjust its own shape to tightly wrap the sampling needle 4, improving the versatility of the stopper 13 in different sampling scenarios.

[0092] In some possible implementation embodiments disclosed in the present application, as shown in Figure 1 Shown, the handling component 2 is further used to transfer the sampling bottle 1 carrying the liquid to be detected to the transfer station 7. A transfer component 8 is arranged at the transfer station 7, and the transfer component 8 is used to receive the sampling bottle 1 transferred to the transfer station 7 and transport the sampling bottle 1 to a designated position.

[0093] In this embodiment, the sampling bottle 1 filled with the liquid to be detected is transferred to the transfer station 7 through the handling component 2, making the entire process from sampling to detection more automated and efficient, and avoiding the problems of low efficiency and errors that may occur during the manual transfer of the sampling bottle 1 between different workstations.

[0094] Among them, the transfer station 7 is a transition area, and the transfer station 7 plays a bridging role between the handling component 2 and the transfer component 8. Here, the handling component 2 has completed its transfer task, and the transfer component 8 begins to take over the transportation of the sampling bottle 1.

[0095] Specifically, the transfer component 8 includes a transceiver and a conveying pipeline. In practical applications, when the sampling bottle 1 is placed at the transfer station 7 by the handling component 2, the transceiver receives the sampling bottle 1 at the transfer station 7, and then transports the received sampling bottle 1 to a designated position through the conveying pipeline.

[0096] In some possible implementation embodiments disclosed in the present application, referring to Figure 1 As shown, the sampling device further includes: a sampling cabinet 9; the sampling cabinet 9 is used to construct an independent and enclosed accommodation space, the handling component 2, the lifting component 3, and the transfer component 8 are arranged in the accommodation space, and observation windows are respectively arranged on the cabinet structure of the sampling cabinet 9 at positions relative to the liquid extraction station 6 and the transfer station 7.

[0097] In this embodiment, the independent and enclosed accommodation space constructed by the sampling cabinet 9 can prevent external pollutants such as dust and impurities from entering, avoiding contamination of the sampling bottle 1 and the liquid to be detected. At the same time, it can also prevent the diffusion of internal radioactive substances to the external environment, reducing potential hazards to the surrounding environment and personnel.

[0098] Among them, the sampling cabinet 9 has a cabinet structure, and an independent and enclosed accommodation space is constructed by enclosing the four walls, the top plate, and the floor of the cabinet.

[0099] Specifically, on the cabinet structure of the sampling cabinet 9, observation windows are respectively arranged at positions relative to the liquid extraction station 6 and the transfer station 7. At the liquid extraction station 6, the sampling bottle 1 and the sampling needle 4 cooperate with each other to complete the operation of sucking the liquid to be detected. By arranging an observation window at the corresponding position of the liquid extraction station 6, the operator can clearly see whether the sampling bottle 1 accurately reaches the liquid extraction station 6, whether the process of the sampling needle 4 inserting into the sampling bottle 1 is smooth, and whether there are any abnormalities during the sucking of the liquid to be detected while standing outside the sampling cabinet 9. Similarly, the observation window at the transfer station 7 facilitates the operator to observe the handover situation of the sampling bottle 1 between the handling component 2 and the transfer component 8, such as whether the sampling bottle 1 is accurately placed on the transfer component 8 and whether the transfer component 8 starts to receive and transport smoothly.

[0100] In some possible implementation embodiments disclosed in the present application, the sampling bottle 1 is made of transparent TPU material.

[0101] In this embodiment, the transparent TPU material enables the liquid level of the liquid to be detected inside the sampling bottle 1 to be clearly visible. During the sampling process, the operator can directly observe the rise and fall of the liquid level with the naked eye, so as to accurately control the sampling volume. In addition, the state of the liquid to be detected, such as color change, whether there is precipitation or suspended matter, etc., can also be clearly seen at a glance, which helps to timely detect abnormal conditions of the liquid to be detected.

[0102] Among them, the TPU material is thermoplastic polyurethane elastomer rubber, which has good transparency.

[0103] Specifically, both the corrugated pipe section 11 and the straight pipe section 12 of the sampling bottle 1 are made of thermoplastic polyurethane elastomer rubber. In this embodiment, the wall thickness of the straight pipe section 12 is greater than that of the corrugated pipe section 11, which is beneficial to maintaining the rigidity of the straight pipe section 12 and the elasticity of the corrugated pipe section 11.

[0104] The above discloses only several specific implementation scenarios of the present application. However, the present application is not limited thereto, and any changes that can be thought of by those skilled in the art should fall within the protection scope of the present application.

Claims

1. A sampling method, characterized in that: For sampling of radioactive materials, including: S101: Transferring the sampling bottle (1) to a liquid collection station (6); S201: driving the sampling bottle (1) to move in a first stroke in a downward direction, so that the sampling needle (4) is inserted into the sampling bottle (1); S301: driving the sampling bottle (1) again to move in the downward direction for a second stroke, thereby compressing the sampling bottle (1); S401: driving the sampling bottle (1) to move the second stroke in the upward direction, thereby stretching the sampling bottle (1); S501: Observe the liquid level of the sampling bottle (1) and determine whether the liquid level reaches a preset height. When the liquid level is lower than the preset height, repeat steps S301 and S401. If the liquid level is higher than the preset height, drive the sampling bottle (1) to move in the upward direction for the first stroke again. S601: transferring the sampling bottle (1) to a transfer station (7); S701: transporting the sampling bottle (1) to a designated location; The sampling bottle (1) is clamped by a lifting component (3) and the sampling bottle (1) is driven to rise and fall; The sampling bottle (1) is provided with a bottle stopper (13) at the bottle mouth, the bottle stopper (13) is made of elastic material, and the bottle stopper (13) comprises a first surface (132) and a second surface (133) which are opposite to each other, the first surface (132) being the end surface of the bottle stopper (13) away from one end of the sampling bottle (1), and the second surface (133) being the end surface of the bottle stopper (13) directly contacting the liquid to be detected in the sampling bottle (1), the first surface (132) and the second surface (133) being hemispherical curved surfaces which are concave in a direction facing the inside of the sampling bottle (1) and away from the sampling needle (4) in both a natural state and an assembled state, and the radius of the first surface (132) is smaller than the radius of the second surface (133); Wherein, the sampling bottle (1) comprises a corrugated tube section (11) and a straight tube section (12); the corrugated tube section (11) is an elastic structure, and the straight tube section (12) is a rigid structure; The outer diameter of the bellows section (11) is greater than the outer diameter of the straight pipe section (12); a first boss (111) is provided at one end of the bellows section (11) away from the straight pipe section (12); and a second boss (121) is provided at one end of the straight pipe section (12) away from the bellows section (11).

2. A sampling device, characterized in that: The sampling device adopts the sampling method according to claim 1 to perform sampling operation, and the sampling device comprises: A handling assembly (2) and a lifting assembly (3); The transport assembly (2) is used to clamp the sampling bottle (1) and transfer the sampling bottle (1) to the liquid collection station (6), and the liquid collection station (6) is provided with the sampling needle (4) connected to the liquid pipeline (5); The lifting component (3) is arranged opposite to the sampling needle (4), and the lifting component (3) is used to clamp the sampling bottle (1) transferred to the liquid collection station (6) and drive the sampling bottle (1) to rise and fall; The sampling bottle (1) is an elastic structure. The sampling bottle (1) can be compressed and stretched along the height direction of the sampling bottle (1). When the lifting component (3) drives the sampling bottle (1) to descend, the sampling needle (4) is inserted into the sampling bottle (1), and the gas inside the sampling bottle (1) is discharged through the sampling needle (4). The sampling bottle (1) is in a compressed state. When the lifting component (3) drives the sampling bottle (1) to ascend, the sampling bottle (1) is in a stretched state. The sampling bottle (1) is used to absorb the liquid to be detected from the liquid pipeline (5) through the sampling needle (4).

3. The sampling device according to claim 2, characterized in that: When the lifting component (3) drives the sampling bottle (1) to rise and fall, the center of the sampling bottle (1) coincides with the sampling needle (4).

4. The sampling device according to claim 2, characterized in that: The transport component (2) is also used to transfer the sampling bottle (1) carrying the liquid to be detected to the transfer station (7). The transfer station (7) is provided with a transfer component (8). The transfer component (8) is used to receive the sampling bottle (1) transferred to the transfer station (7) and transport the sampling bottle (1) to the designated location.

5. The sampling device according to claim 4, characterized in that: Also includes: Sampling cabinet (9); The sampling cabinet (9) is used to construct an independent and closed storage space, the handling component (2), the lifting component (3) and the transmission component (8) are arranged in the storage space, and observation windows are respectively arranged on the cabinet structure of the sampling cabinet (9) at positions relative to the liquid collection station (6) and the transmission station (7).

6. The sampling device according to claim 2, characterized in that: The sampling bottle (1) is made of transparent TPU material.

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