Rheological device and experimental system

Abstract

A kind of rheometer and experimental system, including support platform, rheometer, analysis stage and handling component, rheometer is arranged in support platform, and rheometer includes sample loading platform and rotor, sample loading platform and rotor can be relatively moved;Analysis stage can be detachably connected with sample loading platform, and analysis stage is used to hold sample to be detected;Handling component is used to move analysis stage to sample loading platform, and analysis stage is moved from sample loading platform;Wherein, after handling component moves analysis stage to sample loading platform, rotor is contacted with sample on analysis stage and rotates, to carry out rheological property detection to sample.The rheometer in the utility model need not manual operation, can improve experimental efficiency, also can reduce pollution possibly caused in manual operation, reduce experimental error, improve experimental safety.

Description

Technical Field

[0001] This utility model relates to the field of automation equipment technology, specifically to a rheological device and experimental system. Background Technology

[0002] A rheometer is a precision analytical instrument used to study the flow and deformation behavior of materials. It mainly characterizes the rheological properties (such as viscosity, elastic modulus, yield stress, etc.) of materials by measuring their stress-strain response under external forces.

[0003] As a core method for material property analysis, rheological measurement technology currently mainly relies on manual operation of rheometers for experimental analysis. The manual operation process is cumbersome and inefficient, requiring a large amount of manpower for repetitive work. Moreover, manual operation by experimental personnel can easily contaminate experimental samples and introduce experimental errors. Furthermore, some harmful experimental samples can also have adverse effects on the health of experimental personnel. Utility Model Content

[0004] The purpose of this invention is to provide a rheological device and experimental system to solve the problems of low efficiency, large experimental error, and low safety in manual experiments.

[0005] To achieve the objectives of this utility model, the following technical solution is provided: In a first aspect, this utility model provides a rheological device, including a support platform, a rheometer, an analytical stage, and a transport assembly. The rheometer is disposed on the support platform and includes a sample loading stage and a rotor, wherein the sample loading stage and the rotor are movable relative to each other. The analytical stage is detachably connected to the sample loading stage and is used to hold a sample to be tested. The transport assembly is used to move the analytical stage to the sample loading stage and to remove the analytical stage from the sample loading stage. In this process, after the transport assembly moves the analytical stage to the sample loading stage, the rotor contacts and rotates with the sample on the analytical stage to detect the rheological properties of the sample.

[0006] In one embodiment, the analytical stage includes a body and a boss. The body includes a first surface and a second surface facing away from each other. A receiving groove is formed from the first surface. The boss is disposed on the bottom wall of the receiving groove and protrudes toward the first surface. The boss is used to hold a sample, and the receiving groove can hold a sample that overflows from the boss.

[0007] In one embodiment, the boss includes a first end face and a first outer peripheral face, the first outer peripheral face connecting the first end face to the bottom wall of the receiving groove, the first end face being used to hold a sample, and the first outer peripheral face being used to guide flow; the boss is cylindrical or frustum-shaped, the diameter of the first end face is the same as the diameter of the rotor; in the direction from the first end face to the bottom wall of the receiving groove, the diameter of the cross-section of the boss remains constant or gradually increases.

[0008] In one embodiment, the analytical stage further includes a first positioning part disposed on the second surface, the first positioning part being used to cooperate and connect with the sample loading stage.

[0009] In one embodiment, the rheological device further includes a stage positioning seat, which is detachably connected to the sample loading stage. The stage positioning seat is used to place the analytical stage. The stage positioning seat includes a mounting platform and a second positioning part. The mounting platform is used to place the analytical stage, and the second positioning part is disposed on the mounting platform and is used to cooperate with the first positioning part.

[0010] In one embodiment, the stage positioning base further includes a limiting member disposed on the mounting platform. The limiting member is used to limit at least a portion of the analytical stage around its periphery. The limiting member includes a plurality of limiting parts, which are spaced apart and all connected to the mounting platform. A receiving space is formed between the plurality of limiting parts, which is used to receive at least a portion of the analytical stage.

[0011] In one embodiment, the surface of the mounting platform facing away from the second positioning part has a connecting groove, and at least a portion of the sample mounting platform extends into the connecting groove and engages with the side wall of the connecting groove.

[0012] In one embodiment, the analysis platforms are multiple and stacked sequentially, and the handling component is used to pick up and place the multiple analysis platforms sequentially from top to bottom; The analysis stage further includes a third positioning part, which is disposed on the first surface and corresponds to the first positioning part; In two adjacent analysis stages, the third positioning part of one analysis stage is connected to the first positioning part of the other analysis stage.

[0013] In one embodiment, the end of the boss away from the bottom wall protrudes from the first surface, and the analysis stage has a clearance groove formed from the second surface, and the depth of the clearance groove is greater than the height of the boss protruding from the first surface. In two adjacent analytical stages, the clearance groove of one analytical stage receives at least a portion of the boss of the other analytical stage so that the two analytical stages are in close contact.

[0014] In one embodiment, the analysis stage further includes a first clamping part disposed on the main body, and the conveying assembly is used to clamp and move the first clamping part to move the analysis stage; The first gripping portion protrudes from one side of the main body; or, the first gripping portion is located on opposite sides of the outer peripheral surface of the main body.

[0015] In one embodiment, the rheological device further includes at least one first tray disposed on the support platform, the first tray being used for stacking the analysis stage to be moved to the rheometer, and / or, the first tray being used for stacking the analysis stage removed from the rheometer.

[0016] In one embodiment, the first tray includes a base plate, a baffle plate, and a fourth positioning part. The baffle plate surrounds the base plate and extends toward the side opposite to the support platform. The baffle plate forms an accommodating space for accommodating at least a portion of the analytical stage. The fourth positioning part is disposed on the base plate. Multiple analytical stages are stacked sequentially on the base plate. The fourth positioning part is used to cooperate and connect with the analytical stage closest to the base plate. The baffle plate has a clearance opening through its height direction, which is used to avoid the first gripping part.

[0017] In one embodiment, the rheological device further includes a sample loading assembly for transferring a sample to be tested onto the analytical stage when the analytical stage is located on the sample loading stage; The sample loading component is detachably connected to the transport component, and the transport component is also used to move the sample loading component to the analytical stage.

[0018] In one embodiment, the rheological device further includes a cleaning platform for cleaning the rotor, and the conveying assembly is further configured to move the cleaning platform to the rotor and hold the cleaning platform thereon, and to remove the cleaning platform from the rotor after cleaning is completed.

[0019] In one embodiment, the cleaning platform includes a carrier and a cleaning area and a drying area spaced apart on the carrier. The cleaning area is capable of cleaning the rotor, and the drying area is capable of drying the cleaned rotor. The cleaning area includes at least one cleaning tank and a cleaning sponge located in each of the cleaning tanks. The cleaning sponge is used to contact the rotor and wipe the rotor. The drying area includes at least one drying tank and a drying sponge located in each of the drying tanks. The drying sponge is used to contact the rotor and dry the rotor.

[0020] In one embodiment, the cleaning platform further includes a second gripping part disposed on the carrier, and the conveying assembly is used to grip and move the second gripping part to move the cleaning platform; The second gripping portion protrudes from one side of the carrier; or, the second gripping portion is located on opposite sides of the outer peripheral surface of the carrier.

[0021] In one embodiment, the rheological device further includes a liquid filling assembly disposed on the support platform. The liquid filling assembly includes a liquid filling needle and a liquid filling pump. The liquid filling pump is connected to the liquid filling needle and is used to output cleaning fluid to the liquid filling needle. The transport assembly is also used to move the cleaning platform to the liquid filling needle. The liquid filling needle can add cleaning fluid to the cleaning area.

[0022] In one embodiment, the liquid dispensing assembly further includes a cleaning tank located below the liquid dispensing needle. The cleaning tank is used to clean the liquid dispensing needle and / or to collect cleaning liquid dripping from the liquid dispensing needle.

[0023] In one embodiment, the cleaning platforms are multiple and stacked sequentially, and the conveying component is also used to pick up and place the multiple cleaning platforms sequentially from top to bottom; The rheological device further includes at least one second tray disposed on the support platform, the second tray being used for stacking unused cleaning platforms, and / or, the second tray being used for stacking used cleaning platforms.

[0024] Secondly, this utility model also provides an experimental system, including a rheological device as described in any one of the various embodiments of the first aspect.

[0025] The analytical stage is moved to the sample stage of the rheometer by a transport assembly. After the rheometer analyzes the sample on the analytical stage, the analytical stage is removed from the sample stage by the transport assembly. This process eliminates the need for manual operation, resulting in a high degree of automation, which can improve experimental efficiency, reduce potential contamination caused by manual operation, reduce experimental errors, and improve experimental safety. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a perspective view of a rheological device according to one embodiment; Figure 2 This is a perspective view of an analysis stage according to one embodiment; Figure 3 This is a perspective view of the analysis stage from another angle of one embodiment; Figure 4 This is a perspective view of a platform positioning seat according to one embodiment; Figure 5 This is a perspective view of an analysis stage and stage positioning base according to one embodiment; Figure 6 This is a perspective view of the platform positioning seat from another angle of one embodiment; Figure 7 This is a cross-sectional schematic diagram of multiple stacked analysis stages according to one embodiment; Figure 8 This is a perspective view of the first tray according to one embodiment; Figure 9 This is a partial perspective view of a rheological device according to one embodiment; Figure 10 This is a perspective view of a cleaning stage according to one embodiment; Figure 11 This is a perspective view of another usage state of the rheological device according to one embodiment; Figure 12 This is a perspective view of another usage state of the rheological device according to one embodiment.

[0028] Explanation of reference numerals in the attached figures: 100-Rheological device; 10 - Support platform; 20-Rheometer, 21-Sample stage, 22-Rotor; 30-Analysis stage, 31-Main body, 311-First surface, 312-Second surface, 313-Receiving groove, 314-Allowing groove, 32-Boss, 321-First end face, 322-First outer peripheral surface, 33-First positioning part, 34-Third positioning part, 35-First clamping part, 351-Weight reduction groove; 40 - Handling component; 41 - Gripper; 42 - Motion mechanism; 50-Platform positioning seat, 51-Mounting platform, 511-Connecting groove, 52-Second positioning part, 53-Limiting member, 531-Limiting part, 54-Receiving space; 61-First pallet, 611-Base plate, 612-Baffle plate, 613-Allowing opening, 614-Fourth positioning part, 615-Accommodation space, 62-Second pallet; 70-Sample dispensing assembly, 71-Injector, 711-Tube body, 712-Piston rod, 72-Clamping drive mechanism, 73-Clamping component, 741-Push-pull drive component, 742-Push-pull transmission component, 75-Push-pull base, 76-Guide rail; 80-Cleaning platform, 81-Carrier, 82-Cleaning area, 821-Cleaning tank, 822-Cleaning sponge, 83-Drying area, 831-Drying tank, 832-Drying sponge, 84-Second gripping part; 90-Liquid filling assembly, 91-Liquid filling needle, 92-Liquid filling support, 93-Cleaning tank; X - First direction. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] It should be noted that when a component is said to be "fixed" to another component, it can be directly on the other component or it can be in a middle component. When a component is said to be "connected" to another component, it can be directly connected to the other component or it may be in a middle component.

[0031] Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this invention includes any and all combinations of one or more of the associated listed items.

[0032] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0033] Please refer to Figures 1 to 12This utility model provides a rheological device 100, including a support platform 10, a rheometer 20, an analysis platform 30, and a transport assembly 40.

[0034] First, define the direction. Please refer to [the relevant documentation / reference]. Figure 1 X is the first direction. Optionally, when the rheological device 100 is in the operating position, the first direction X can be the direction of gravity.

[0035] The support platform 10 can be made of materials that meet structural strength requirements and are easy to process and form, such as plastics, aluminum alloys, and ceramics, without limitation. The support platform 10 can be a one-piece structure, and the one-piece molding process can be stamping, casting, etc., without limitation. The support platform 10 can also be a split structure, and the various parts of the support platform 10 can be connected and fixed by welding, bonding, snap-fitting, screwing, etc.

[0036] A rheometer 20 is a precision instrument used to measure the rheological properties of materials. It analyzes the deformation and flow behavior of materials under different conditions by applying controllable stress or strain. The rheometer 20 is widely used in polymer materials, food, cosmetics, biomedicine, petrochemicals, and other fields. It can be used for viscosity testing, elasticity and viscoelasticity analysis, yield stress and thixotropic property assessment, and temperature dependence studies, providing crucial data support for product development, quality control, and theoretical research. The rheometer 20 can be any feasible instrument in the art capable of measuring the rheological properties of materials; this embodiment of the invention does not impose specific limitations in this regard.

[0037] The rheometer 20 is mounted on the support platform 10. The rheometer 20 includes a sample stage 21 and a rotor 22, which are movable relative to each other. Optionally, the rotor 22 can move toward or away from the sample stage 21, and / or the rotor 22 can rotate relative to the sample stage 21; no specific restrictions are imposed. It is understood that the sample stage 21 can also move toward or away from the rotor 22, without restriction. The rotor 22 of the rheometer 20 can be a coaxial cylindrical rotor 22, a parallel plate rotor 22, a flat conical plate rotor 22, a paddle rotor 22, etc., without restriction.

[0038] The analytical stage 30 is used to hold the sample to be tested. Optionally, the analytical stage 30 can be plate-shaped, block-shaped, cylindrical, etc., without limitation. The analytical stage 30 can be used to hold medium and low viscosity fluids or gel-like samples, etc.

[0039] The transport assembly 40 is used to move the analysis stage 30 to the sample stage 21 and to remove the analysis stage 30 from the sample stage 21, so as to achieve a detachable connection between the analysis stage 30 and the sample stage 21.

[0040] Optionally, the handling assembly 40 includes a connected gripper 41 and a motion mechanism 42. The motion mechanism 42 can move the target object by driving the gripper 41 to move. The motion mechanism 42 can be a robotic arm, such as a four-axis robotic arm, a six-axis robotic arm, etc.; or a multi-directional translation mechanism, such as a horizontal movement mechanism, a vertical movement mechanism, or an XYZ three-axis movement mechanism, etc. The specific structure of the motion mechanism 42 can refer to any feasible solution, and this embodiment of the utility model is not limited thereto.

[0041] The motion mechanism 42 moves the gripper 41 to the location where the target object is stored, and the gripper 41 holds the target object and moves it to the target location. The function of the gripper 41 is to stably hold the target object, and the specific structure of the present invention is not limited. It is understood that the target object that the gripper 41 can hold, in addition to the analysis stage 30, can also be a tray, cleaning stage 80, etc., and the present invention is not limited thereto.

[0042] Optionally, the transport component 40 can move the analysis stage 30 containing samples to the sample loading stage 21, or it can move the analysis stage 30 without samples to the sample loading stage 21 and then add samples into the analysis stage 30. There are no specific restrictions.

[0043] In this process, after the transport component 40 moves the analysis stage 30 to the sample loading stage 21, the rotor 22 contacts and rotates with the sample on the analysis stage 30 to detect the rheological properties of the sample.

[0044] During the experiment in the rheological apparatus 100, the transport assembly 40 moves the analytical stage 30 to the sample stage 21 of the rheometer 20, fixing the relative position between the analytical stage 30 and the sample stage 21, and then adds the sample to be analyzed into the analytical stage 30. Next, the rotor 22 of the rheometer 20 moves towards the sample stage 21 and contacts the sample in the analytical stage 30 for analysis. After the analysis is completed, the transport assembly 40 removes the used analytical stage 30 from the sample stage 21 of the rheometer 20, completing one rheological property detection.

[0045] The rheological device 100 in this embodiment of the present invention can move the analysis stage 30 to the sample loading stage 21 of the rheometer 20 through the transport component 40. After the rheometer 20 analyzes the sample placed on the analysis stage 30, the analysis stage 30 is removed from the sample loading stage 21 through the transport component 40. No manual operation is required, the degree of automation is high, the experimental efficiency can be improved, and the pollution that may be caused by manual operation can be reduced, experimental errors can be reduced, and experimental safety can be improved.

[0046] In one embodiment, such as Figure 2As shown, the analysis stage 30 includes a main body 31 and a boss 32. The main body 31 includes a first surface 311 and a second surface 312 facing away from each other. A receiving groove 313 is formed from the first surface 311. The boss 32 is disposed on the bottom wall of the receiving groove 313 and protrudes towards the first surface 311. The boss 32 is used to hold samples, and the receiving groove 313 can hold samples that overflow from the boss 32.

[0047] The analytical stage 30 can be made of materials that meet structural strength requirements, are easy to process and mold, and have good chemical compatibility. Specific materials include stainless steel, glass, polytetrafluoroethylene (PTFE), and polypropylene (PP), without limitation. The analytical stage 30 can be a one-piece structure, and the one-piece molding process can include stamping, casting, etc., without limitation. Alternatively, the analytical stage 30 can be a split structure, with the main body 31 and the boss 32 connected and fixed by welding, bonding, snap-fitting, screwing, etc.

[0048] Optionally, the shape of the boss 32 and the shape enclosed by the receiving groove 313 can be roughly similar, and can be square, circular, polygonal, etc., without specific restrictions. The center of the boss 32 can roughly coincide with the center of the receiving groove 313. With this arrangement, the distance between the side wall of the boss 32 and the side wall of the receiving groove 313 is roughly the same in the circumferential direction.

[0049] When a sample is added to the boss 32 or when the rotor 22 descends and comes into contact with the sample on the analytical stage 30, some sample may overflow from the boss 32. This design allows the overflowing sample to automatically flow down the edge of the boss 32 without affecting the analytical results. Simultaneously, the overflowing sample is contained in the gap between the sidewall of the boss 32 and the sidewall of the receiving groove 313, preventing contamination of other parts of the rheometer 20.

[0050] In one embodiment, such as Figure 2 As shown, the boss 32 includes a first end face 321 and a first outer peripheral face 322. The first outer peripheral face 322 connects the first end face 321 and the bottom wall of the receiving groove 313. The first end face 321 is used to hold the sample, and the first outer peripheral face 322 is used to guide the flow.

[0051] Optionally, the boss 32 also includes a second end face opposite to the first end face 321, the first outer peripheral surface 322 connects the first end face 321 and the second end face, and the second end face is connected to the bottom wall of the receiving groove 313.

[0052] In one embodiment, the boss 32 is cylindrical or frustum-shaped. It is understood that the cross-sections of the first end face 321, the second end face, and the boss 32 at any position along the first direction X are all circular. Optionally, the diameter of the end of the first outer peripheral surface 322 connected to the first end face 321 is the same as the diameter of the first end face 321, and the diameter of the end of the first outer peripheral surface 322 connected to the second end face is the same as the diameter of the second end face.

[0053] Optionally, the diameter of the first end face 321 is the same as the diameter of the rotor 22, and the diameter of the cross-section of the boss 32 remains consistent or gradually increases in the direction from the first end face 321 to the bottom wall of the receiving groove 313. This arrangement ensures that overflowing samples flow from the first outer peripheral surface 322 into the receiving groove 313 in a timely manner, avoiding excess samples from accumulating on the side of the rotor 22 and ensuring the accuracy of the test results.

[0054] In some other embodiments, the ratio of the diameter of the rotor 22 to the diameter of the first end face 321 can be 0.8-1.1, specifically 0.8, 0.85, 0.9, 0.95, 1.05, 1.1, etc., without limitation.

[0055] In one specific implementation, such as Figure 2 As shown, in the direction from the first end face 321 to the bottom wall of the receiving groove 313, the diameter of the cross section of the boss 32 remains consistent, and the boss 32 can be approximately cylindrical; or, in the direction from the first end face 321 to the bottom wall of the receiving groove 313, the diameter of the cross section of the boss 32 gradually increases, and the boss 32 can be approximately frustum-shaped with the diameter gradually increasing from top to bottom, which is beneficial for guiding the flow.

[0056] Alternatively, the boss 32 can also be prism-shaped or frustum-shaped. All of the above embodiments are acceptable and no specific limitation is imposed.

[0057] Optionally, the first end face 321 may be flush with, lower than or higher than the first surface 311, without limitation.

[0058] By setting a boss 32, the diameter of its first end face 321 is the same as the diameter of the rotor 22, and the diameter of the cross-section of the boss 32 remains consistent or gradually increases from the first end face 321 to the bottom wall of the receiving groove 313, ensuring the connection stability between the boss 32 and the main body 31. At the same time, it facilitates the flow of samples overflowing from the boss 32 down the first outer peripheral surface 322, ensuring the accuracy of the analysis results. With this setting, there is no need for manual scraping of overflowing samples or the design of special tools, resulting in a simple structure and a high degree of automation integration.

[0059] In one embodiment, such as Figure 2 and Figure 3 As shown, the analysis stage 30 also includes a first positioning part 33, which is disposed on the second surface 312 and is used to cooperate and connect with the sample stage 21.

[0060] Optionally, the analysis stage 30 can be detachably connected to the sample stage 21 via the first positioning part 33. The first positioning part 33 can be a protrusion or groove structure, or a snap-fit ​​structure, as long as it can be connected with the sample stage 21. No specific restrictions are imposed.

[0061] The number of first positioning parts 33 can be one or more, and the multiple first positioning parts 33 can be arranged at intervals on the second surface 312, without any specific limitation.

[0062] In one specific embodiment, such as Figure 3 As shown, the first positioning part 33 is a hole or groove structure, which is used to connect with the pin or protrusion on the sample stage 21. There are two first positioning parts 33 arranged at intervals.

[0063] In another specific embodiment, the first positioning part 33 is a groove structure that is adapted to the shape and size of the outer contour of the upper sample stage 21 so as to engage with the outer edge of the upper sample stage 21.

[0064] By including a first positioning part 33 in the analysis stage 30, when the analysis stage 30 is set on the sample stage 21, the first positioning part 33 can cooperate and connect with the sample stage 21 to realize the positioning connection between the analysis stage 30 and the sample stage 21, thereby realizing the alignment between the analysis stage 30 and the rotor 22, avoiding the rotor 22 from failing to fully contact the sample on the analysis stage 30, and improving the accuracy of the detection effect.

[0065] In one embodiment, such as Figure 4 and Figure 5 As shown, the rheological device 100 also includes a stage positioning seat 50, which is detachably connected to the sample loading stage 21. The stage positioning seat 50 is used to place the analytical stage 30.

[0066] The stage positioning seat 50 is used to facilitate the quick loading and unloading of the analytical stage 30 and the sample loading stage 21. Optionally, before moving the analytical stage 30 to the sample loading stage 21, the stage positioning seat 50 can be installed on the sample loading stage 21 manually or mechanically, and then the analytical stage 30 can be moved onto the stage positioning seat 50 for testing the sample held in the analytical stage 30. When it is necessary to replace the analytical stage 30, simply remove the analytical stage 30 to be replaced from the stage positioning seat 50, and then move the newly replaced analytical stage 30 onto the stage positioning seat 50. There is no need to disassemble the stage positioning seat 50, which facilitates the quick loading and unloading of the analytical stage 30.

[0067] The stage positioning base 50 includes a mounting platform 51 and a second positioning part 52. The mounting platform 51 is used to place the analysis stage 30, and the second positioning part 52 is disposed on the mounting platform 51 and is used to cooperate and connect with the first positioning part 33.

[0068] The platform positioning base 50 can be an integral structure or a split structure. The mounting platform 51 and the second positioning part 52 can be connected and fixed by welding, bonding, snap-fitting, screwing, etc., without limitation. Optionally, the mounting platform 51 and the sample mounting platform 21 can be detachably connected. The connection between the two can be by plugging, bonding, snap-fitting, screwing, riveting, magnetic connection, etc., without limitation.

[0069] The second positioning part 52 can be a protrusion or a groove structure, or a snap-fit ​​structure, as long as it can cooperate and connect with the first positioning part 33, there is no limitation. The number of second positioning parts 52 can be one or more, as long as they correspond to the first positioning part 33, there is no specific limitation.

[0070] Optionally, one of the first positioning part 33 and the second positioning part 52 may be a protrusion, and the other may be a groove. In a specific embodiment, such as Figure 3 and Figure 4 As shown, the first positioning part 33 is a pin hole, and the second positioning part 52 is a positioning pin, so that when the first positioning part 33 and the second positioning part 52 are connected, the analysis platform 30 and the platform positioning seat 50 are in close contact, improving the connection stability. In another specific embodiment, the first positioning part 33 is a positioning pin, and the second positioning part 52 is a pin hole, without limitation.

[0071] By setting up a stage positioning seat 50, which is detachably connected to the sample loading stage 21, the analysis stage 30 can be placed on the mounting platform 51 of the stage positioning seat 50. After the analysis is completed, the analysis stage 30 only needs to be removed for replacement or cleaning, without the need for cleaning on the rheometer 20, thus reducing the difficulty of cleaning and improving experimental efficiency.

[0072] In one embodiment, such as Figure 4 and Figure 5 As shown, the stage positioning base 50 also includes a limiting member 53, which is disposed on the mounting platform 51 and is used to limit at least a portion of the analysis stage 30.

[0073] Optionally, the limiting member 53 can be disposed on the surface of the mounting platform 51 where the second positioning part 52 is provided, or the limiting member 53 can also be disposed on the outer peripheral surface of the mounting platform 51, without limitation. The limiting member 53 can be a structure protruding from the mounting platform 51, that is, the limiting member 53 and the mounting platform 51 can be an integral structure; the limiting member 53 can also be a limiting structure such as a pin or positioning block, and the limiting member 53 and the mounting platform 51 can be connected and fixed by welding, bonding, snap-fitting, screwing, riveting, magnetic connection or other methods.

[0074] Optionally, the limiting member 53 includes at least one limiting portion 531, which is a limiting structure adapted to the outer peripheral surface of the analysis stage 30 to limit at least a portion of the periphery of the analysis stage 30. In one specific embodiment, such as Figure 4 As shown, the limiting member 53 includes a plurality of limiting parts 531, which are spaced apart and connected to the mounting stage 51. A receiving space 54 is formed between the plurality of limiting parts 531, and the receiving space 54 is used to receive at least a portion of the analysis stage 30.

[0075] Optionally, the limiting part 531 is a positioning pin. There are four limiting parts 531, which are arranged at approximately circumferential intervals along the mounting platform 51. The main body 31 of the analysis platform 30 is housed between the four limiting parts 531, which can prevent the analysis platform 30 from tilting up and down or left and right due to instability of the center of gravity.

[0076] Optionally, the limiting part 531 may be a strip-shaped structure or an arc-shaped structure protruding from the upper surface of the mounting platform 51, and there is no limitation.

[0077] Optionally, when the analytical stage 30 is placed on the mounting platform 51 of the stage positioning seat 50, there is a gap between the analytical stage 30 and each limiting part 531. This gap can be 0.5mm-2mm, specifically 0.5mm, 1mm, 1.5mm, 2mm, etc. This setting avoids interference or collision between the analytical stage 30 and the limiting parts 53 when it is placed, which would affect the accuracy of the experiment.

[0078] With this configuration, the limiting component 53 can limit the analysis stage 30, preventing the rotor 22 of the rheometer 20 from moving the analysis stage 30 when it comes into contact with and rotates with the sample on the analysis stage 30, thus avoiding deviations in the detection data and improving experimental accuracy.

[0079] In one embodiment, such as Figure 6 As shown, the surface of the mounting platform 51 facing away from the second positioning part 52 has a connecting groove 511, at least a portion of the sample mounting platform 21 extends into the connecting groove 511 and is connected to the side wall of the connecting groove 511.

[0080] The shape of the connecting groove 511 can be square, round, triangular, regular polygon, etc., and its shape and size can correspond to the upper sample stage 21. There is no restriction on the specific shape.

[0081] Optionally, the sample loading stage 21 and the sidewall of the connecting groove 511 can be connected by means of bonding, snap-fitting, screwing, riveting, magnetic connection, etc. In a specific embodiment, the stage positioning seat 50 is locked to the sample loading stage 21 of the rheometer 20 by a set screw or ball-head plunger, etc.

[0082] With this configuration, after the stage positioning seat 50 is installed on the sample stage 21, the stage positioning seat 50 will not move, thus providing stable support for the analysis stage 30.

[0083] In one embodiment, such as Figure 1 , Figure 2 , Figure 3 and Figure 7 As shown, there are multiple analysis stages 30 stacked in sequence, and the handling assembly 40 is used to pick up and place the multiple analysis stages 30 sequentially from top to bottom.

[0084] Optionally, multiple analysis stages 30 can be stacked sequentially along the first direction X.

[0085] Optionally, multiple stacked analysis stages 30 can be placed on the support platform 10 or spaced apart from the support platform 10, without restriction. Stacking multiple analysis stages 30 can save space and facilitate the handling components 40 to pick up and put down the analysis stages 30.

[0086] The transport assembly 40 moves the uppermost analytical stage 30 among multiple analytical stages 30 to the sample loading stage 21, places the sample on it, and analyzes the sample. After the sample is used, the analytical stage 30 is removed, and the next analytical stage 30 is moved to the sample loading stage 21 for the next sample analysis. The analytical stage 30 can be replaced after each analysis, eliminating the need to clean the rheometer 20 in preparation for the next sample analysis. This reduces the difficulty of cleaning and improves experimental efficiency.

[0087] Optionally, multiple analytical stages 30 removed from the sample loading stage 21 can also be stacked sequentially to save space.

[0088] The analysis stage 30 also includes a third positioning part 34, which is disposed on the first surface 311 and corresponds to the first positioning part 33. In two adjacent analysis stages 30, the third positioning part 34 of one analysis stage 30 is connected to the first positioning part 33 of the other analysis stage 30.

[0089] The third positioning part 34 is provided correspondingly to the first positioning part 33. Optionally, one of the first positioning part 33 and the third positioning part 34 is a positioning pin, and the other is a pin hole.

[0090] In one specific embodiment, such as Figure 2 and Figure 3As shown, the first positioning part 33 has two spaced-apart pin holes, and the third positioning part 34 has two spaced-apart positioning pins. When multiple analysis stages 30 are stacked, the positioning pins of the lower analysis stage 30 extend into the pin holes of the upper analysis stage 30 to achieve positioning between the multiple analysis stages 30 and prevent the stacked analysis stages 30 from tilting or collapsing.

[0091] Optionally, the end of the locating pin is tapered to facilitate alignment with the pin hole.

[0092] With this configuration, two adjacent analysis stations 30 are connected by the third positioning part 34 of one and the first positioning part 33 of the other, so as to realize the stacking of multiple analysis stations 30, which can save space and facilitate the handling component 40 to pick up and put down the analysis stations 30.

[0093] In one embodiment, such as Figure 2 , Figure 3 and Figure 7 As shown, the end of the boss 32 away from the bottom wall protrudes from the first surface 311, and the analysis platform 30 has a relief groove 314 on the second surface 312, and the depth of the relief groove 314 is greater than the height of the boss 32 protruding from the first surface 311. In two adjacent analysis stages 30, the clearance groove 314 of one analysis stage 30 accommodates at least a portion of the protrusion 32 of the other analysis stage 30 so that the two analysis stages 30 are in close contact.

[0094] Optionally, the end of the boss 32 furthest from the bottom wall (i.e., the first end face 321) is higher than the first surface 311, which facilitates the processing of the boss 32 and ensures the flatness of the top surface of the boss 32. When multiple analytical stages 30 are stacked, the first surface 311 of the lower analytical stage 30 fits against the second surface 312 of the upper analytical stage 30, and the part of the boss 32 of the lower analytical stage 30 protruding from the first surface 311 extends into the clearance groove 314 of the upper analytical stage 30. This can ensure the flatness and stability of the stacked analytical stages 30 and prevent the stacked analytical stages 30 from tilting or collapsing.

[0095] Optionally, the inner diameter of the clearance groove 314 is larger than the outer diameter of the boss 32, that is, there is a gap between the side wall of the clearance groove 314 and the side circumferential surface of the boss 32, so as to avoid the boss 32 from contacting the clearance groove 314 and being worn.

[0096] In addition, the depth of the clearance groove 314 is greater than the height of the boss 32 protruding from the first surface 311. When the boss 32 of the lower analytical stage 30 extends into the clearance groove 314 of the upper analytical stage 30, there will be a certain gap between the top of the boss 32 (i.e. the first end face 321) and the bottom wall of the clearance groove 314, so as to avoid the boss 32 from contacting the bottom wall of the clearance groove 314 and causing wear to the boss 32, thus affecting the experimental results.

[0097] In one embodiment, such as Figure 2 As shown, the analysis stage 30 also includes a first gripping portion 35, which is disposed on the main body 31. The conveying assembly 40 is used to grip and move the first gripping portion 35 to move the analysis stage 30. The first gripping portion 35 protrudes from one side of the main body 31; or, the first gripping portion 35 is located on opposite sides of the outer peripheral surface of the main body 31.

[0098] The first clamping part 35 and the main body 31 can be an integral structure or a separate structure, without specific restrictions.

[0099] Optionally, the first gripping part 35 may be generally plate-shaped, rod-shaped, or block-shaped, and protrude from one side of the main body 31 to facilitate gripping by the transport assembly 40; or, the first gripping part 35 may also be adapted to the shape of at least part of the outer peripheral wall of the main body 31 and protrude from at least one side of the main body 31 (which may be the two sides opposite or adjacent to the main body 31, or it may protrude along the entire circumference); or, there may be two first gripping parts 35, with one first gripping part 35 respectively provided on the two opposite sides of the main body 31 in the circumferential direction. All of the above methods are acceptable and there is no specific limitation.

[0100] Optional, such as Figure 2 As shown, the first gripping part 35 has two opposing planes, which facilitates the handling assembly 40 to be gripped from opposite sides. The first gripping part 35 may be provided with a weight-reducing groove 351 or a weight-reducing hole (not shown) to reduce the weight of the analysis stage 30 and facilitate handling.

[0101] By providing the first gripping part 35, the transport assembly 40 can easily grip and move the analysis stage 30.

[0102] In one embodiment, such as Figure 7 and Figure 8 As shown, the rheological device 100 also includes at least one first tray 61, which is disposed on the support platform 10. The first tray 61 is used to stack and place the analysis stage 30 to be moved to the rheometer 20, and / or, the first tray 61 is used to stack and place the analysis stage 30 removed from the rheometer 20.

[0103] The first tray 61 and the support platform 10 can be an integral structure, or the first tray 61 and the support platform 10 can be detachably connected. The connection method can be welding, bonding, snap-fitting, screwing, riveting, magnetic connection, etc., without restriction.

[0104] Optionally, at least one first tray 61 is used to place the analysis stage 30 to be moved to the rheometer 20. The analysis stages 30 can be pre-stacked on the first tray 61. Before the rheometer 100 starts the detection operation, the first tray 61 with the stacked analysis stages 30 can be set on the support platform 10 manually or mechanically; or, an empty first tray 61 can be set on the support platform 10 first, and then the stacked analysis stages 30 can be placed on the first tray 61.

[0105] Optionally, at least one of the multiple first trays 61 is used to stack and place the analytical stages 30 removed from the rheometer 20. This arrangement facilitates batch processing of the used analytical stages 30. For example, after a certain number of analytical stages 30 are placed in the first tray 61, the first tray 61 can be moved outside the support platform 10 to perform batch cleaning and other operations on the used analytical stages 30.

[0106] Optionally, among the plurality of first trays 61, the number of first trays 61 used to place the analysis stage 30 to be moved to the rheometer 20 is the same as the number of first trays 61 used to stack and place the analysis stage 30 removed from the rheometer 20.

[0107] By setting up a first tray 61, which is used to stack and place the analytical stages 30 to be moved to the rheometer 20 and / or removed from the rheometer 20, it is convenient to perform batch operations on the analytical stages 30 to be used and / or after use, simplifying the experimental process and improving experimental efficiency.

[0108] In one embodiment, such as Figure 8 As shown, the first tray 61 includes a base plate 611, a baffle plate 612, and a fourth positioning part 614. The baffle plate 612 surrounds the base plate 611 and extends toward the side opposite to the support platform 10. The baffle plate 612 forms an accommodating space 615 for accommodating at least a portion of the analytical stage 30. The fourth positioning part 614 is disposed on the base plate 611. Multiple analytical stages 30 are stacked sequentially on the base plate 611. The fourth positioning part 614 is used to cooperate and connect with the analytical stage 30 closest to the base plate 611. The baffle plate 612 has a clearance opening 613 through it along its height direction. The clearance opening 613 is used to avoid the first gripping part 35.

[0109] The first tray 61 can be an integral structure or a split structure. The base plate 611, the surrounding plate 612 and the fourth positioning part 614 can be connected and fixed by welding, bonding, snap-fitting, screwing, riveting, magnetic connection and other methods, without restriction.

[0110] Optionally, the height direction of the first tray 61 is the first direction X. Multiple analysis platforms 30 are stacked sequentially on the base plate 611 along the first direction X. The baffle plate 612 has a clearance opening 613 through it along the first direction X. The main body 31 of the analysis platform 30 is housed in the accommodating space 615 enclosed by the baffle plate 612. The first clamping part 35 of the analysis platform 30 extends out from the clearance opening 613. The baffle plate 612 can limit the analysis platform 30.

[0111] Optionally, at least a portion of the main body 31 and / or the first gripping part 35 may be received within the clearance opening 613.

[0112] Optionally, the fourth positioning part 614 is used to mate and connect with the first positioning part 33 of the analysis stage 30 closest to the base plate 611. The fourth positioning part 614 can be a protrusion or groove structure, or a snap-fit ​​structure, as long as it can mate and connect with the first positioning part 33, there is no limitation.

[0113] Optionally, one of the first positioning part 33 and the fourth positioning part 614 may be a protrusion, and the other may be a groove. In a specific embodiment, such as Figure 3 and Figure 8 As shown, the first positioning part 33 is a pin hole and the fourth positioning part 614 is a positioning pin, so that when the first positioning part 33 and the fourth positioning part 614 are connected, the lowest analytical stage 30 is in close contact with the bottom plate 611 of the first tray 61, so as to achieve the positioning of the analytical stage 30.

[0114] Optionally, the surface of the base plate 611 facing away from the fourth positioning part 614 also has a connecting part (not shown in the figure), which can be connected with the support platform 10 to position the first tray 61. Optionally, the connecting part can be a pin hole, and the support platform 10 is provided with a positioning pin, which are connected to achieve the positioning of the first tray 61.

[0115] By setting the first tray 61, which includes a base plate 611, a baffle plate 612, and a fourth positioning part 614, the fourth positioning part 614 is connected to the analysis stage 30 closest to the base plate 611, which can realize the positioning of the analysis stage 30. The baffle plate 612 on the side can prevent the stacked analysis stages 30 from tilting or collapsing.

[0116] In one embodiment, such as Figure 9As shown, the rheological device 100 also includes a sample loading assembly 70, which is used to transfer the sample to be tested onto the analytical stage 30 when the analytical stage 30 is located on the upper sample stage 21.

[0117] The sample loading assembly 70 includes a tool for transferring a sample onto the analytical stage 30. This tool can be a syringe 71, a pipette, or any other feasible transfer tool, without limitation. Optionally, the sample loading assembly 70 includes a syringe 71 through which the target sample is drawn and injected into the center of the protrusion 32 of the analytical stage 30. The syringe 71 can transfer liquids with high viscosity and can solve the problem of air bubbles in the sample during manual sample loading.

[0118] Optional, such as Figure 9 As shown, the sample application assembly 70 also includes a clamping drive mechanism 72, a clamping member 73, a push-pull drive mechanism, and a push-pull seat 75. The syringe 71 includes a tube 711 and a piston rod 712. The tube 711 is used to contain the sample to be tested. At least a portion of the piston rod 712 is housed within the tube 711 and is movable relative to the tube 711. The clamping member 73 is used to clamp the tube 711 of the syringe 71. The clamping drive mechanism 72 is connected to the clamping member 73 and can drive the clamping member 73 to clamp the tube 711 of the syringe 71. The push-pull seat 75 is connected to the piston rod 712 of the syringe 71. The push-pull drive mechanism is connected to the push-pull seat 75 and is used to drive the push-pull seat 75 to move, thereby causing the piston rod 712 to move relative to the tube 711. The clamping drive mechanism 72 can be a motor drive mechanism, a cylinder drive mechanism, etc., and is not limited thereto.

[0119] In one embodiment, the clamping member 73 includes two clamping portions disposed opposite each other. The clamping drive mechanism 72 can drive the two clamping portions to move towards or away from each other to clamp or release the tube 711 of the syringe 71. Optionally, the clamping portion includes a clamping surface facing the syringe 71, and the clamping surface is formed with a plurality of serrations. The serrations play an anti-slip and reinforcing role when the clamping member 73 clamps the syringe 71. Specifically, the serrations prevent the tube 711 of the syringe 71 from sliding on the clamping member 73 when the push-pull seat 75 is driven to push and pull the piston rod 712 of the syringe 71. In other embodiments, anti-slip rubber or other anti-slip and reinforcing structures can also be provided on the clamping surface of the clamping portion, which are not specifically limited here.

[0120] In other embodiments, the clamping surface of the clamping part may also be arc-shaped or V-shaped. Specifically, an arc-shaped or V-shaped clamping surface has better compatibility with the tube body 711 when clamping the syringe 71, a larger contact area with the syringe 71, and increases the frictional force for clamping the syringe 71, resulting in a more secure clamping of the syringe 71.

[0121] Optionally, the sample dispensing assembly 70 further includes a guide rail 76, with the push-pull seat 75 movably connected to the guide rail 76 and its sliding direction parallel to the moving direction of the piston rod 712. In one embodiment, the push-pull drive mechanism includes a push-pull drive member 741 and a push-pull transmission member 742, with the push-pull seat 75 connected to the push-pull transmission member 742, and the extending direction of the guide rail 76 being the same as the extending direction of the push-pull transmission member 742. The push-pull drive member 741 can drive the push-pull seat 75 to move relative to the guide rail 76 through the push-pull transmission member 742, thereby driving the piston rod 712 of the syringe 71 to move relative to the tube body 711.

[0122] In one embodiment, the push-pull drive component 741 is a stepper motor, and the push-pull transmission component 742 is a lead screw and nut assembly. The push-pull seat 75 is connected to the nut in the lead screw and nut assembly. When the stepper motor is working, it drives the lead screw to rotate, and the nut drives the push-pull seat 75 to move linearly along the lead screw. In some other embodiments, the push-pull drive component 741 can also be a linear motor, and the corresponding push-pull transmission component 742 is a telescopic lead screw. The push-pull seat 75 is connected to one end of the push-pull transmission component 742. When the linear motor is working, it drives the push-pull transmission component 742 to extend or retract, and the push-pull transmission component 742 can also drive the push-pull seat 75 to move linearly along the push-pull transmission component 742. The types of the push-pull drive component 741 and the push-pull transmission component 742 are not limited to the two types listed above. As long as the push-pull drive component 741 can drive the push-pull transmission component 742 to move the push-pull seat 75 along the push-pull transmission component 742 when it is working, it should be included within the scope of protection of this utility model.

[0123] Optionally, the structure of the push-pull seat 75 can be similar to that of the clamping member 73; or, the push-pull seat 75 can be a block structure with a slot for engaging the piston rod 712 of the syringe 71.

[0124] Optionally, the sample loading assembly 70 also includes a control element (not shown), which is connected to a push-pull drive mechanism. When the clamping member 73 clamps the tube body 711, the control element controls the push-pull drive mechanism to drive the push-pull seat 75 to move, thereby driving the piston rod 712 of the syringe 71 to move and complete the sample transfer operation.

[0125] The sample loading assembly 70 is detachably connected to the transport assembly 40, which is also used to move the sample loading assembly 70 to the analytical stage 30.

[0126] Optionally, the sample loading component 70 is mounted on the motion mechanism 42, which can move the sample loading component 70. When the transport component 40 transfers the analysis stage 30 to the sample loading stage 21, the sample loading component 70 moves with the transport component 40 to the sample loading stage 21 and transfers the sample to be tested onto the analysis stage 30. Alternatively, the sample loading component 70 and the transport component 40 are spaced apart. The transport component 40 can move to the sample loading component 70 and connect to it, and then the transport component 40 moves the sample loading component 70 to the analysis stage 30 located on the sample loading stage 21. Any of these methods are acceptable and not limited in any particular case.

[0127] During sample addition, the transport assembly 40 moves the sample addition assembly 70 to the sample extraction point. The clamping member 73 of the sample addition assembly 70 clamps the tube 711 of the syringe 71 under the drive of the clamping drive mechanism 72. The push-pull drive mechanism drives the push-pull seat 75 to pull the piston rod 712 of the syringe 71 to extract the sample. Afterward, the transport assembly 40 moves the sample addition assembly 70 to the analysis stage 30 on the sample loading stage 21. The push-pull drive mechanism drives the push-pull seat 75 to push the piston rod 712 of the syringe 71 to squeeze the sample onto the analysis stage 30, completing the sample transfer.

[0128] By setting up the sample loading component 70, the sample to be tested can be transferred to the analytical stage 30 located on the sample loading stage 21 without manual operation. This improves experimental efficiency, reduces potential contamination caused by manual operation, lowers experimental errors, and enhances experimental safety. Furthermore, transferring the analytical stage 30 to the rheometer 20 before using the sample loading component 70 for sample loading, compared to loading the sample in the analytical stage 30 first and then transferring it to the rheometer 20, avoids sample loss during the transfer process, thus preventing any impact on the test results.

[0129] In one embodiment, such as Figure 1 , Figure 10 and Figure 11 As shown, the rheostat 100 also includes a cleaning platform 80 for cleaning the rotor 22. The transport assembly 40 is also used to move the cleaning platform 80 to the rotor 22 and hold the cleaning platform 80, and to remove the cleaning platform 80 from the rotor 22 after cleaning is completed.

[0130] The cleaning stage 80 is used to clean the rotor 22, wiping away any residual sample on the rotor 22 after testing to avoid cross-contamination between samples. The cleaning stage 80 can adopt any feasible structure in the art, and there is no specific limitation.

[0131] Optionally, the transport assembly 40 can move the cleaning stage 80 to the rotor 22 and hold it in a clamped state for a certain period of time. During this time, the rotor 22 rotates relative to the cleaning stage 80, and the cleaning stage 80 cleans the rotor 22. After cleaning, the transport assembly 40 removes the cleaning stage 80 from the rotor 22. Alternatively, the transport assembly 40 can move the cleaning stage 80 to the rheometer 20 and place the cleaning stage 80 on any feasible support structure (e.g., the sample loading stage 21 or the stage positioning seat 50). The cleaning stage 80 cleans the rotor 22, and after cleaning, the transport assembly 40 removes the cleaning stage 80 from the rheometer 20.

[0132] Optionally, after the rheometer 20 finishes testing the sample on the analysis stage 30, the analysis stage 30 is not removed from the sample stage 21. Instead, the cleaning stage 80 is moved to the rotor 22 by the transport assembly 40 and the rotor 22 is cleaned. At this time, the analysis stage 30 can receive the cleaning fluid dripping from the cleaning stage 80 to avoid contaminating the rheometer 20.

[0133] By setting up the cleaning stage 80, the sample to be cleaned adhering to the rotor 22 can be adsorbed without manual cleaning, resulting in a high degree of automation.

[0134] In one embodiment, such as Figure 10 As shown, the cleaning platform 80 includes a carrier 81 and a cleaning area 82 and a drying area 83 spaced apart on the carrier 81. The cleaning area 82 can clean the rotor 22, and the drying area 83 can dry the cleaned rotor 22.

[0135] The cleaning zone 82 includes at least one cleaning tank 821 and a cleaning sponge 822 located in each cleaning tank 821. The cleaning sponge 822 is used to contact the rotor 22 and wipe the rotor 22. The drying zone 83 includes at least one drying tank 831 and a drying sponge 832 located in each drying tank 831. The drying sponge 832 is used to contact the rotor 22 and dry the rotor 22.

[0136] The number of cleaning areas 82 and drying areas 83 can be one or more, and their numbers can be the same or different, without limitation. For example, the cleaning platform 80 includes two functional areas, one of which is a cleaning area 82 and the other is a drying area 83; or, the cleaning platform 80 includes four functional areas, three of which are cleaning areas 82 and the other is a drying area 83; or, the cleaning platform 80 includes three functional areas, one of which is a cleaning area 82 and the other two are drying areas 83, without limitation. Multiple cleaning areas 82 and drying areas 83 can be arranged side by side, in an array, or spaced apart along the circumference, etc. The cleaning areas 82 and drying areas 83 can be staggered or arranged in regions (for example, the carrier 81 includes a first region and a second region, multiple cleaning areas 82 are all located in the first region, and multiple drying areas 83 are all located in the second region), without limitation.

[0137] The shapes of the cleaning sponge 822 and the drying sponge 832 are not specifically limited, and their materials can be polyurethane (PU) sponge, PVA sponge, nano sponge (melamine sponge), fiber cloth sponge, etc., or any feasible cleaning sponge in the field, without limitation. The cleaning sponge 822 contains a certain amount of cleaning solution. The amount of cleaning solution in the cleaning sponges 822 in different cleaning tanks 821 can be the same or different, such as decreasing sequentially. The drying sponge 832 is a dry sponge without cleaning solution.

[0138] After the transport assembly 40 moves the cleaning stage 80 to the rotor 22, the rotor 22 is first cleaned using the cleaning zone 82 (the rotor 22 rotates relative to the cleaning zone 82). Then, the position of the cleaning stage 80 is moved, and the rotor 22 is dried using the drying zone 83, ready for the next test. This setup eliminates the need for manual cleaning of the rotor 22. The cleaning zone 82 absorbs the sample adhering to the rotor 22, and the drying zone 83 wipes away any residual moisture or cleaning solution, preventing cross-contamination between samples and improving test accuracy.

[0139] In one embodiment, such as Figure 10 As shown, the cleaning platform 80 also includes a second gripping portion 84, which is disposed on the carrier 81. The conveying assembly 40 is used to grip and move the second gripping portion 84 to move the cleaning platform 80. The second gripping portion 84 protrudes from one side of the carrier 81; or, the second gripping portion 84 is located on opposite sides of the outer peripheral surface of the carrier 81.

[0140] The second gripping part 84 and the carrier 81 can be an integral structure or a separate structure, without specific restrictions.

[0141] Optionally, the second gripping part 84 may be generally plate-shaped or block-shaped and protrude from one side of the carrier 81 to facilitate gripping by the transport assembly 40; or, the second gripping part 84 may also be adapted to the shape of at least part of the outer peripheral wall of the carrier 81 and protrude from at least one side of the carrier 81 (which may be opposite or adjacent sides, or protrude along the entire circumference); or, there may be two second gripping parts 84, with one second gripping part 84 respectively provided on opposite sides of the carrier 81 in the circumferential direction. All of the above methods are acceptable and there is no specific limitation.

[0142] By providing a second gripping part 84, it is convenient for the transport component 40 to grip and move the cleaning platform 80.

[0143] In one embodiment, such as Figure 1 As shown, there are multiple cleaning platforms 80 stacked in sequence, and the conveying component 40 is also used to pick up and place multiple cleaning platforms 80 sequentially from top to bottom.

[0144] Optionally, multiple stacked cleaning platforms 80 can be placed on the support platform 10 or spaced apart from the support platform 10, without restriction. Stacking multiple cleaning platforms 80 can save space and facilitate the handling component 40 to pick up and put down the cleaning platforms 80.

[0145] The transport assembly 40 can move the uppermost cleaning platform 80 among multiple cleaning platforms 80 to the rotor 22, clean the rotor 22, remove the used cleaning platform 80, and move the next cleaning platform 80 to the rotor 22 when the next cleaning is needed. This eliminates the need for manual operation, reduces the difficulty of cleaning, and improves the degree of automation.

[0146] Optionally, multiple cleaning stages 80 removed from the rotor 22 can also be stacked sequentially.

[0147] The rheological device 100 also includes at least one second tray 62 disposed on the support platform 10, the second tray 62 being used for stacking unused cleaning platforms 80, and / or, the second tray 62 being used for stacking used cleaning platforms 80.

[0148] The second tray 62 and the support platform 10 can be an integral structure, or the second tray 62 and the support platform 10 can be detachably connected. The connection method can be welding, bonding, snap-fitting, screwing, riveting, magnetic connection, etc., without restriction.

[0149] Optionally, at least one second tray 62 is used to place the cleaning stage 80 to be moved to the rotor 22. The cleaning stages 80 can be pre-stacked on the second tray 62. Before the rheology device 100 starts the testing operation, the second tray 62 with the stacked cleaning stages 80 can be set on the support platform 10 manually or mechanically; or, an empty second tray 62 can be set on the support platform 10 first, and then the stacked cleaning stages 80 can be placed on the second tray 62.

[0150] Optionally, at least one of the multiple second trays 62 is used to stack and place the cleaning platforms 80 removed from the rotor 22. This arrangement facilitates batch processing of the used cleaning platforms 80. For example, once a certain number of cleaning platforms 80 are placed in the second tray 62, the second tray 62 can be moved outside the support platform 10 to perform batch cleaning of the used cleaning platforms 80.

[0151] Optionally, the number of second trays 62 used to place the cleaning stage 80 to be moved to the rotor 22 is the same as the number of second trays 62 used to place the analysis stage 30 removed from the rotor 22.

[0152] By setting a second tray 62, which is used to stack and place the cleaning stage 80 to be moved to the rotor 22 and / or the cleaning stage 80 removed from the rotor 22, it is convenient to perform batch operations on the cleaning stage 80 to be used and / or after use, simplifying the experimental process and improving experimental efficiency.

[0153] Optionally, the specific structure of the second tray 62 is similar to that of the first tray 61, and can be referred to without further details.

[0154] In one embodiment, such as Figure 1 and Figure 12 As shown, the rheological device 100 also includes a liquid filling assembly 90, which is disposed on the support platform 10. The liquid filling assembly 90 includes a liquid filling needle 91 and a liquid filling pump (not shown in the figure). The liquid filling pump is connected to the liquid filling needle 91 and is used to output cleaning fluid to the liquid filling needle 91. The transport assembly 40 is also used to move the cleaning platform 80 to the liquid filling needle 91. The liquid filling needle 91 can add cleaning fluid to the cleaning area 82.

[0155] The liquid addition needle 91 is used to add a fixed volume of liquid into the container. Optionally, the liquid addition needle 91 is used to add cleaning fluid into the cleaning zone 82 of the cleaning stage 80. The liquid addition needle 91 can be a fixed-volume liquid phase addition needle or an adjustable-volume liquid phase addition needle, or any other feasible liquid addition needle 91 in the art, without limitation. The liquid addition needle 91 can meet the high-precision sample addition requirements in small-volume liquid operations, significantly reducing the errors caused by manual liquid addition, thereby improving the accuracy and reliability of the experiment.

[0156] Optionally, the number of liquid injection needles 91 can be one or more, without limitation. When there are multiple liquid injection needles 91, multiple liquid injection needles 91 can simultaneously deliver the same or different cleaning fluids to multiple cleaning zones 82 of the cleaning stage 80, without limitation. The liquid injection needles 91 can be positioned at the edge of the support stage 10 to minimize interference between components.

[0157] Optionally, the injection needle 91 can be directly connected and fixed to the support platform 10; or, as... Figure 12 As shown, the liquid filling assembly 90 also includes a liquid filling bracket 92, which is connected and fixed to the support platform 10. The liquid filling needle 91 is installed at the end of the liquid filling bracket 92 away from the support platform 10 and extends toward the support platform 10.

[0158] The liquid delivery pump is used to deliver liquid into the liquid delivery needle 91. The liquid delivery pump can be mounted on the support platform 10 or the liquid delivery bracket 92, and there is no specific limitation. Optionally, the liquid delivery pump can be a metering pump, plunger pump, diaphragm pump, peristaltic pump, piston pump, etc., or any feasible device for delivering liquid in the art, and there is no specific limitation.

[0159] Optionally, there can be one or more liquid pumps; there is no specific limitation. When there are multiple liquid pumps, they can simultaneously deliver the same cleaning fluid to multiple liquid injection needles 91, or they can each deliver different liquids to one or more liquid injection needles 91. The choice can be made according to actual needs and there is no limitation.

[0160] Optionally, the liquid filling assembly 90 also includes a multi-way valve (not shown in the figure), which is connected to the liquid filling pump, the liquid filling needle 91 and the container containing the cleaning fluid.

[0161] After the rheometer 20 completes an analysis of the sample on the analysis stage 30, the rotor 22 of the rheometer 20 needs to be cleaned. At this time, the transport assembly 40 first moves the cleaning stage 80 to the liquid injection needle 91, and the liquid injection needle 91 injects cleaning fluid into the cleaning area 82 of the cleaning stage 80; then, the transport assembly 40 moves the cleaning stage 80 to the rotor 22 of the rheometer 20 to clean the rotor 22.

[0162] By setting up the liquid addition component 90, cleaning agent can be added to the cleaning area 82 of the cleaning stage 80 without manual operation, which can meet the high-precision sample addition requirements in liquid operations and improve experimental efficiency and safety.

[0163] In one embodiment, such as Figure 12As shown, the liquid filling assembly 90 also includes a cleaning tank 93 located below the liquid filling needle 91. The cleaning tank 93 is used to clean the liquid filling needle 91 and / or to collect the cleaning liquid dripping from the liquid filling needle 91.

[0164] Optionally, the cleaning tank 93 is connected and fixed to the support platform 10 or the liquid addition bracket 92. The connection method can be direct or indirect, without limitation. When changing samples or cleaning different experimental substances remaining on the rotor 22, different cleaning solutions need to be added to the cleaning stage 80 by the liquid addition needle 91. At this time, in order to avoid the previous liquid from contaminating the next liquid, the liquid addition needle 91 and its tubing need to be cleaned before adding the next liquid to avoid cross-contamination. The rinsed cleaning solution can be collected in the cleaning tank 93, and the waste liquid in the cleaning tank 93 can also be used to clean the outer wall of the liquid addition needle 91. The cleaning tank 93 can also be used to collect the cleaning solution remaining on the tip of the liquid addition needle 91 to prevent liquid from contaminating the work surface.

[0165] In one specific embodiment, the liquid addition assembly 90 further includes a cleaning pump (not shown in the figure), which is used to discharge cleaning waste liquid from the cleaning tank 93. Optionally, the cleaning pump can be a plunger pump, diaphragm pump, peristaltic pump, piston pump, etc., without limitation.

[0166] By setting up the cleaning tank 93, the cleaning tank 93 can hold the cleaning liquid remaining on the tip of the liquid addition needle 91, avoiding contamination of the work surface. At the same time, it can clean the liquid addition needle 91, avoiding cross-contamination when adding different cleaning liquids to the liquid addition needle 91, and ensuring the accuracy of the experiment.

[0167] In one specific embodiment, the workflow of the rheology device 100 is as follows: Before the rheometer 20 begins operation, the first tray 61, on which the analysis stage 30 is stacked, and the second tray 62, on which the cleaning stage 80 is stacked, are placed on the support platform 10 manually or mechanically, and the stage positioning seat 50 is installed on the sample loading stage 21 of the rheometer 20 to complete the sample loading process. Then, as... Figure 1 As shown, the transport assembly 40 picks up an analysis stage 30 from the first tray 61 and moves it onto the stage positioning seat 50; and, as Figure 9 As shown, the transport assembly 40 moves the sample loading assembly 70 to the analysis stage 30 on the stage positioning seat 50 to load the sample onto the analysis stage 30. Then, the rotor 22 of the rheometer 20 moves towards the sample stage 21 and contacts and rotates with the sample on the analysis stage 30 to detect the rheological properties of the sample. After characterization, the rotor 22 moves away from the sample stage 21, as... Figure 12 As shown, the transport assembly 40 picks up a cleaning platform 80 from the second tray 62 and moves it to the liquid addition assembly 90 to add cleaning fluid to the cleaning area 82 of the cleaning platform 80; then, as... Figure 11As shown, the transport assembly 40 moves the cleaning stage 80 to the rotor 22 and holds it thereto clean the rotor 22. After cleaning, the transport assembly 40 removes the cleaning stage 80 from the rotor 22 and also removes the analysis stage 30 from the stage positioning seat 50, completing one automated experimental procedure of the rheometer device 100.

[0168] This utility model embodiment also provides an experimental system, including any of the rheological devices 100 in this utility model embodiment.

[0169] Optionally, the experimental system also includes a sample preparation device (not shown) for preparing the sample to be tested. The sample preparation device may be mounted on the support platform 10, or the sample preparation device may include a base connected to or spaced apart from the support platform 10, with the functional modules of the sample preparation device mounted on the base.

[0170] Optionally, the functional modules of the sample preparation device include, but are not limited to, any one or a combination of multiple of the following: a powder addition module, a liquid addition module, a cap opening / closing module, a stirring module, and a visual inspection module. The powder addition module enables high-precision, highly repeatable quantitative addition of powdered samples, achieving automated powder addition. The liquid addition module enables quantitative transfer of the same or multiple liquids into the sample to be prepared. The cap opening / closing module enables automated opening and closing of experimental containers (e.g., test tubes) during sample preparation, improving the degree of automation. The stirring module enables automated stirring during sample preparation, eliminating the need for manual operation. The visual inspection module enables automated detection of sample properties (e.g., fluidity, turbidity) after sample preparation. All of the above functional modules can be implemented using any feasible method in the art, and this invention does not impose specific limitations on them. Through the above experimental system, a fully automated operation process for sample preparation and measurement can be achieved.

[0171] In the description of the embodiments of this utility model, it should be noted that the orientation or positional relationship of the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and other indicators are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0172] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the present utility model.

Claims

1. A rheological device, characterized in that, include: Support platform; A rheometer is mounted on the support platform. The rheometer includes a sample stage and a rotor, and the sample stage and the rotor are movable relative to each other. An analytical stage is detachably connected to the sample loading stage, and the analytical stage is used to hold the sample to be tested; A transport assembly for moving the analytical stage to the sample loading stage and removing the analytical stage from the sample loading stage; In this process, after the transport assembly moves the analytical stage to the sample loading stage, the rotor contacts and rotates with the sample on the analytical stage to detect the rheological properties of the sample.

2. The rheological device according to claim 1, characterized in that, The analytical stage includes a body and a boss. The body includes a first surface and a second surface facing away from each other. A receiving groove is formed from the first surface. The boss is disposed on the bottom wall of the receiving groove and protrudes towards the first surface. The boss is used to hold a sample, and the receiving groove can hold a sample that overflows from the boss.

3. The rheological device according to claim 2, characterized in that, The protrusion includes a first end face and a first outer peripheral face. The first outer peripheral face connects the first end face to the bottom wall of the receiving groove. The first end face is used to hold the sample, and the first outer peripheral face is used to guide the flow. The boss is cylindrical or frustum-shaped, and the diameter of the first end face is the same as the diameter of the rotor; in the direction from the first end face to the bottom wall of the receiving groove, the diameter of the cross-section of the boss remains constant or gradually increases.

4. The rheological device according to claim 2, characterized in that, The analytical stage further includes a first positioning part, which is disposed on the second surface and is used to cooperate with the sample loading stage.

5. The rheological device according to claim 4, characterized in that, The rheological device also includes a stage positioning seat, which is detachably connected to the sample loading stage and is used to place the analytical stage. The stage positioning base includes a mounting platform and a second positioning part. The mounting platform is used to place the analytical stage, and the second positioning part is disposed on the mounting platform and is used to cooperate and connect with the first positioning part.

6. The rheological device according to claim 5, characterized in that, The stage positioning base also includes a limiting member, which is disposed on the mounting platform and is used to limit at least a portion of the analytical stage around its periphery. The limiting member includes multiple limiting parts, which are spaced apart and connected to the mounting platform. A receiving space is formed between the multiple limiting parts, and the receiving space is used to receive at least a portion of the analysis stage.

7. The rheological device according to claim 5, characterized in that, The mounting platform has a connecting groove on its surface facing away from the second positioning part. At least a portion of the sample mounting platform extends into the connecting groove and is connected to the side wall of the connecting groove.

8. The rheological device according to claim 4, characterized in that, The analysis platforms are multiple and stacked sequentially, and the handling component is used to pick up and place the multiple analysis platforms sequentially from top to bottom; The analysis stage further includes a third positioning part, which is disposed on the first surface and corresponds to the first positioning part; In two adjacent analysis stages, the third positioning part of one analysis stage is connected to the first positioning part of the other analysis stage.

9. The rheological device according to claim 8, characterized in that, The end of the boss away from the bottom wall protrudes from the first surface, and the analysis stage has a clearance groove formed from the second surface, and the depth of the clearance groove is greater than the height of the boss protruding from the first surface. In two adjacent analytical stages, the clearance groove of one analytical stage receives at least a portion of the boss of the other analytical stage so that the two analytical stages are in close contact.

10. The rheological device according to claim 2, characterized in that, The analysis stage further includes a first clamping part disposed on the main body, and the conveying assembly is used to clamp and move the first clamping part to move the analysis stage; The first gripping portion protrudes from one side of the main body; or, the first gripping portion is located on opposite sides of the outer peripheral surface of the main body.

11. The rheological device according to claim 10, characterized in that, The rheological device further includes at least one first tray disposed on the support platform. The first tray is used to stack the analysis stage to be moved to the rheometer, and / or, the first tray is used to stack the analysis stage removed from the rheometer.

12. The rheological device according to claim 11, characterized in that, The first tray includes a base plate, a baffle plate, and a fourth positioning part. The baffle plate surrounds the base plate and extends toward the side opposite to the support platform. The baffle plate forms an accommodating space for accommodating at least a portion of the analytical stage. The fourth positioning part is disposed on the base plate. Multiple analytical stages are stacked sequentially on the base plate. The fourth positioning part is used to cooperate and connect with the analytical stage closest to the base plate. The baffle plate has a clearance opening through it along its height direction. The clearance opening is used to avoid the first gripping part.

13. The rheological device according to claim 1, characterized in that, The rheological device further includes a sample loading assembly for transferring the sample to be tested onto the analytical stage when the analytical stage is located on the sample loading stage; The sample loading component is detachably connected to the transport component, and the transport component is also used to move the sample loading component to the analytical stage.

14. The rheological device according to any one of claims 1-13, characterized in that, The rheological device further includes a cleaning platform for cleaning the rotor. The transport assembly is also used to move the cleaning platform to the rotor and hold the cleaning platform thereon, and to remove the cleaning platform from the rotor after cleaning is completed.

15. The rheological device according to claim 14, characterized in that, The cleaning platform includes a carrier and a cleaning area and a drying area spaced apart on the carrier. The cleaning area can clean the rotor, and the drying area can dry the cleaned rotor. The cleaning area includes at least one cleaning tank and a cleaning sponge located in each of the cleaning tanks. The cleaning sponge is used to contact the rotor and wipe the rotor. The drying area includes at least one drying tank and a drying sponge located in each of the drying tanks. The drying sponge is used to contact the rotor and dry the rotor.

16. The rheological device according to claim 15, characterized in that, The cleaning platform further includes a second gripping part disposed on the carrier, and the conveying assembly is used to grip and move the second gripping part to move the cleaning platform; The second gripping portion protrudes from one side of the carrier; or, the second gripping portion is located on opposite sides of the outer peripheral surface of the carrier.

17. The rheological device according to claim 15, characterized in that, The rheological device further includes a liquid filling assembly, which is disposed on the support platform. The liquid filling assembly includes a liquid filling needle and a liquid filling pump. The liquid filling pump is connected to the liquid filling needle and is used to output cleaning fluid to the liquid filling needle. The transport assembly is also used to move the cleaning platform to the liquid filling needle. The liquid filling needle can add cleaning fluid to the cleaning area.

18. The rheological device according to claim 17, characterized in that, The liquid dispensing assembly also includes a cleaning tank located below the liquid dispensing needle. The cleaning tank is used to clean the liquid dispensing needle and / or to collect the cleaning liquid dripping from the liquid dispensing needle.

19. The rheological device according to claim 14, characterized in that, The cleaning platforms are multiple and stacked sequentially, and the conveying component is also used to pick up and place the multiple cleaning platforms sequentially from top to bottom; The rheological device further includes at least one second tray disposed on the support platform, the second tray being used for stacking unused cleaning platforms, and / or, the second tray being used for stacking used cleaning platforms.

20. An experimental system, characterized in that, Includes the rheological device as described in any one of claims 1-19.

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