A cup-pressing sleeve assembly and a sample pretreatment device

Abstract

This invention provides a cup-pressing sleeve assembly and a sample pretreatment device. The cup-pressing sleeve assembly includes a fixed base, a tube pressing component, an adjusting ring, and an elastic component. The upper part of the tube pressing component is movably disposed within the fixed base, and the lower part of the tube pressing component has an abutment portion. The lower part of the adjusting ring is connected to the tube pressing component, and the upper part of the adjusting ring abuts against the upper part of the fixed base. The axial distance between the fixed base and the abutment portion is adjustable. The elastic component elastically abuts between the fixed base and the abutment portion. The sample pretreatment device includes a mixing component, a sample turntable assembly, a lifting component, and a cup-pressing sleeve assembly. The sample turntable assembly includes a housing and a turntable disposed within the housing. The turntable has a sample placement hole. The cup-pressing sleeve assembly is disposed on the top wall of the housing, and the mixing component is disposed below the cup-pressing sleeve assembly. The sample placement hole can be rotated between the cup-pressing sleeve assembly and the mixing component. The lifting component can drive the mixing component to move up and down. This invention allows for adjustment of different pre-tightening forces according to actual needs to meet the requirements of different applications.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a cup-pressing sleeve assembly and a sample pretreatment device. Background Technology

[0002] Currently, in vitro diagnostics is a widely used diagnostic method in the medical field. It involves collecting bodily fluids, excretions, and secretions from the human body for chemical composition or chemical reaction analysis to determine human diseases. Examples include chemiluminescence analysis, molecular diagnostics, and immunodiagnostics. In the field of molecular diagnostics, eccentric rotational oscillation or ultrasonic cavitation are often used for sample pretreatment. The mixing or ultrasonication process requires fixing the sample tube vertically before performing the mixing or ultrasonication. In existing technology, the mixing mechanism uses a fixing seat to fix the bottom of the test tube from below, and an elastic pressing rod to fix the top of the test tube from above. The elastic pressing rod includes a pressing rod and an elastic element sleeved on the outside of the pressing rod, with a top pressing seat at the bottom of the pressing rod. During fixing, the top pressing seat abuts against the top of the test tube, and the fixing seat abuts against the bottom of the test tube. The pressing rod can be lifted by the test tube, and the elastic element is compressed. At this time, the test tube is fixed by the counterforce of the fixing seat and the elastic element. However, this solution cannot adjust the pre-tightening force of the top pressing seat and is only suitable for a single situation. For sample pretreatment devices that have both mixing and ultrasonic functions, because the forces of mixing and ultrasonic actions are different, if a single pre-tightening force fixing method is used, it will lead to unstable fixing or over-tight fixing of the test tube. During eccentric rotational oscillation or ultrasonic cavitation, the test tube may shift and shake or have poor oscillation amplitude, thus affecting the mixing effect. Utility Model Content

[0003] The primary objective of this invention is to provide a cup sleeve assembly with adjustable preload according to actual needs.

[0004] The second objective of this invention is to provide a sample pretreatment device comprising the aforementioned cup-pressing sleeve assembly.

[0005] To achieve the aforementioned first objective, this utility model provides a cup-pressing sleeve assembly, including a fixed base, a tube pressing component, an adjusting ring, and an elastic element. The upper part of the tube pressing component is movably disposed within the fixed base, and the lower part of the tube pressing component is provided with an abutment portion that protrudes beyond the fixed base. The lower part of the adjusting ring is disposed within the fixed base and connected to the tube pressing component, and the upper part of the adjusting ring can abut against the upper part of the fixed base. Axially, the distance from the fixed base to the abutment portion is adjustable. The elastic element elastically abuts against the fixed base and the abutment portion.

[0006] As can be seen from the above scheme, by setting the distance from the fixed seat to the abutment part to be adjustable, it is convenient to adjust the distance according to actual needs, thereby adjusting the compression degree and pre-tightening force of the elastic element, which is beneficial to meet the usage requirements of different mixing occasions, ensuring that the sample tube can be fixed with the most appropriate force in different mixing occasions, which is convenient for subsequent eccentric rotation oscillation or ultrasonic mixing treatment; this utility model also has the advantages of simple structure and convenient operation.

[0007] A further solution is to allow the adjusting ring to rotate relative to the pipe clamping component, thereby adjusting the axial position of the pipe clamping component.

[0008] As can be seen from the above scheme, the above settings not only facilitate the adjustment of the axial position of the pipe fitting, but also play a certain limiting role in the axial direction, preventing the axial position of the pipe fitting from shifting due to accidental contact.

[0009] A further design includes an adjusting ring comprising a head and a threaded rod, wherein the outer diameter of the head is larger than the outer diameter of the threaded rod, and the head can abut against the fixed seat; a threaded hole is provided on the upper inner side of the pipe fitting, and the threaded rod is threadedly connected to the threaded hole.

[0010] As can be seen from the above scheme, the distance between the fixed seat and the contact part can be adjusted by turning the adjusting ring in the forward and reverse directions, which has the advantages of simple and convenient operation; moreover, through the threaded connection, after the adjustment is in place, there will be no relative rotation between the adjusting ring and the pipe fitting under the action of a large amount of no external force, thereby avoiding affecting the current axial position of the pipe fitting.

[0011] A further design includes an adjusting ring comprising a head and a guide rod. The outer diameter of the head is larger than that of the guide rod, and the head can abut against the fixed seat. The guide rod has a protrusion on its peripheral wall. The upper inner side of the tube pressing component has an installation groove, and the groove wall of the installation groove has a spiral groove. The protrusion is embedded in the spiral groove and can move along the spiral groove.

[0012] As can be seen from the above scheme, the distance between the fixed seat and the contact part can be adjusted by turning the adjusting ring in the forward and reverse directions, which has the advantages of simple and convenient operation.

[0013] A further option is to have scales arranged circumferentially on the upper part of the fixing base; and to have an indicator on the adjusting ring that points to the scale.

[0014] As can be seen from the above scheme, the above settings facilitate the recording of preload and have the advantages of easy adjustment and reduced operational errors.

[0015] A further option is that the cup sleeve assembly also includes a braking component, which passes through the adjusting ring and is detachably connected to the tube pressing component. The detachable connection includes: threaded connection, magnetic connection, and snap-fit ​​connection.

[0016] As can be seen from the above scheme, the above settings help to prevent the adjusting ring and the pipe pressure component from loosening due to vibration during use.

[0017] To achieve the second objective mentioned above, this utility model provides a sample pretreatment device, including a mixing component, a sample turntable component, a lifting component, and the aforementioned cup holder component. The sample turntable component includes a housing and a turntable, which is rotatably disposed within the housing. The turntable is provided with a sample placement hole. The cup holder component is disposed on the top wall of the housing. The mixing component is disposed below the cup holder component. The sample placement hole can be rotated between the cup holder component and the mixing component. The lifting component can drive the mixing component to move up and down.

[0018] As can be seen from the above scheme, with the above settings, the sample tube is placed in the sample placement hole and can be rotated to the bottom of the pressure cup sleeve assembly. Then, the lifting assembly drives the mixing assembly to rise to lift the sample tube. The upper part of the sample tube abuts against the tube pressing part of the pressure cup sleeve assembly and pushes it to rise. Under the counteracting force of the elastic element, it plays the role of fixing the sample tube. After that, the mixing assembly can perform a mixing operation on the sample tube.

[0019] A further option is that the mixing assembly includes an eccentric rotary mixing mechanism and / or an ultrasonic mixing mechanism.

[0020] As can be seen from the above scheme, since the pre-tightening force of the cup sleeve assembly is adjustable, the cup sleeve assembly can be used for eccentric rotary mixing mechanisms and ultrasonic mixing mechanisms. Before use, the pre-tightening force of the cup sleeve assembly can be adjusted to a suitable value.

[0021] A further embodiment is that the sample pretreatment device also includes a rotary drive system. The eccentric rotary mixing mechanism includes a mixing seat, an eccentric mixing shaft, and a coupling. The upper part of the mixing seat is provided with a protrusion, and a first mating groove is opened on the protrusion. The lower part of the mixing seat is eccentrically connected to the eccentric mixing shaft. The eccentric mixing shaft is connected to the rotary drive system through the coupling. The rotary drive system can drive the coupling and the eccentric mixing shaft to rotate, thereby driving the mixing seat to perform eccentric rotary motion.

[0022] As can be seen from the above scheme, with the above settings, the bottom groove of the sample tube can be fitted onto the protrusion, and the tip of the bottom of the sample tube can be embedded in the first mating groove, which plays the role of positioning the sample tube; thereafter, the mixing seat can drive the sample tube to make an eccentric rotational motion to achieve the mixing function.

[0023] A further embodiment is that the sample pretreatment device also includes an ultrasonic controller, and the ultrasonic mixing mechanism includes an ultrasonic head. The ultrasonic controller and the ultrasonic head are electrically connected, and a second mating groove is provided on the upper part of the ultrasonic head.

[0024] As can be seen from the above scheme, with the above settings, the bottom tip of the sample tube can be embedded in the second mating groove, which serves to position the sample tube; thereafter, the ultrasonic head can perform ultrasonic mixing operation on the sample tube to achieve the mixing function. Attached Figure Description

[0025] Figure 1 This is a structural diagram of an embodiment of the cup-pressing sleeve assembly of this utility model.

[0026] Figure 2 This is a cross-sectional view of an embodiment of the cup-pressing sleeve assembly of this utility model.

[0027] Figure 3 This is a top view of an embodiment of the cup-pressing sleeve assembly of this utility model.

[0028] Figure 4 This is a structural diagram of the sample pretreatment device of this utility model.

[0029] Figure 5 This is a cross-sectional view of the sample pretreatment device of this utility model.

[0030] Figure 6 This is a structural diagram of the eccentric rotating mixing mechanism in the sample pretreatment device of this utility model before it presses against the sample tube.

[0031] Figure 7 This is a cross-sectional view of the eccentric rotating mixing mechanism in the sample pretreatment device of this utility model before it presses against the sample tube.

[0032] Figure 8 This is a diagram showing the eccentric rotating mixing mechanism pressing against the sample tube in the sample pretreatment device of this utility model.

[0033] Figure 9 This is a cross-sectional view of the eccentric rotating mixing mechanism in the sample pretreatment device of this utility model when it is pressing against the sample tube.

[0034] Explanation of reference numerals on the accompanying drawings: 10-Cup sleeve assembly; 20 - Sample pretreatment device; 30 - Sample tubes; 1-Fixed base, 11-Center hole, 12-Second limiting part, 13-Scale, 14-Receiving groove; 2-Pipe clamping fitting, 21-Abutting part, 22-Edge protrusion, 23-Threaded hole, 24-Mounting hole; 3-Adjusting ring, 31-Head, 311-First limiting part, 312-Indicator, 32-Threaded rod, 33-Stepped hole; 4-Elastic element; 5-Brake components; 6a-Rotary mixing mechanism, 61-Mixing seat, 611-Protrusion, 612-First mating groove, 62-Eccentric mixing shaft, 63-Concave coupling, 64-Convex coupling, 65-Second bearing, 66-First bearing seat, 67-First bearing, 68-Second bearing seat; 6c - Rotary drive system, 6c1 - Mixing drive device, 6c2 - Second drive pulley, 6c3 - Second synchronous belt, 6c4 - Second synchronous pulley; 6b-ultrasonic mixing mechanism, 6b1-ultrasonic head, 6b11-second mating groove; 6D-ultrasound controller; 7-Sample turntable assembly, 71-Housing shell, 711-Receiving cavity, 712-Infeed, 713-Outfeed, 714-Mixing position, 72-Turntable, 721-Sample placement hole, 73-Sample rotation drive device, 74-Rotating spindle; 8-Lifting assembly, 81-Moving plate, 82-Lifting drive device.

[0035] The present invention will be further described below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0036] Example of a cup sleeve assembly See Figures 1 to 3 The cup sleeve assembly 10 provided in this embodiment includes a fixed base 1, a tube pressing component 2, an adjusting ring 3, and an elastic component 4.

[0037] The fixing base 1 is designed as a ring, and a central hole 11 is provided through the middle of the fixing base 1.

[0038] The upper part of the tube clamping member 2 is movably inserted into the central hole 11 of the fixing base 1, with a clearance fit between the tube clamping member 2 and the central hole 11, allowing the tube clamping member 2 to move up and down relative to the fixing base 1. The lower part of the tube clamping member 2 protrudes beyond the fixing base 1, and the lower part of the tube clamping member 2 is provided with an abutment portion 21 and at least two edge protrusions 22. In this embodiment, three edge protrusions 22 are used as an example. The abutment portion 21 protrudes from the outer peripheral wall of the tube clamping member 2, and the three edge protrusions 22 are arranged circumferentially on the bottom wall of the abutment portion 21, forming a chamber between the three edge protrusions 22 for accommodating the upper part of the sample tube 30.

[0039] The lower part of the adjusting ring 3 is disposed inside the fixed seat 1 and connected to the pipe clamping member 2. The lower part of the adjusting ring 3 can be disposed inside the pipe clamping member 2, or the lower part of the adjusting ring 3 can be sleeved on the outside of the pipe clamping member 2. In this embodiment, the former is preferred. The upper part of the adjusting ring 3 can abut against the upper part of the fixed seat 1. In the axial direction, the distance from the fixed seat 1 to the abutment part 21 is adjustable.

[0040] The adjusting ring 3 can rotate relative to the pipe clamping component 2, thereby adjusting the axial position of the pipe clamping component 2.

[0041] In one embodiment, such as Figure 2 As shown, the adjusting ring 3 includes a head 31 and a threaded rod 32. The outer diameter of the head 31 is larger than the outer diameter of the threaded rod 32. The head 31 abuts against the upper part of the fixed seat 1. A threaded hole 23 is provided on the upper inner side of the pipe clamping member 2, and the threaded rod 32 is threadedly connected to the threaded hole 23.

[0042] In another embodiment, the adjusting ring includes a head and a guide rod. The outer diameter of the head is larger than the outer diameter of the guide rod, and the head can abut against the fixed seat. A protrusion is provided on the peripheral wall of the guide rod. An installation groove is formed on the upper inner side of the tube fitting, and a spiral groove is provided on the groove wall, extending spirally along the axial direction of the tube fitting. The protrusion can be embedded in the spiral groove and can move along the spiral groove. A suitable gap is provided between the protrusion and the spiral groove so that the protrusion can move within the spiral groove under external force, and can remain at any position within the spiral groove when no external force is applied.

[0043] The elastic element 4 elastically abuts against the fixed base 1 and the abutment part 21. By rotating the adjusting ring 3 in both directions, the pipe clamping element 2 can be moved up and down, thereby adjusting the distance between the fixed base 1 and the abutment part 21, and thus adjusting the degree of compression and preload of the elastic element 4. The higher the degree of compression of the elastic element 4, the greater its preload; the lower the degree of compression of the elastic element 4, the smaller its preload. The elastic element 4 is preferably a spring. In this embodiment, the preload is the spring's preload, which refers to the initial force applied to the spring by some means before the spring is installed or operates.

[0044] exist Figure 2 In the middle, the bottom wall of the head 31 is provided with a first limiting part 311. The top wall of the fixed base 1 is provided with a second limiting part 12, which is located on the outer periphery of the central hole 11, and the first limiting part 311 abuts against the second limiting part 12.

[0045] Before the tube clamping member 2 comes into contact with the sample tube 30, the first limiting part 311 and the second limiting part 12 come into contact under the action of gravity, at which time the tube clamping member 2 is in a low position; when the sample tube 30 pushes the tube clamping member 2 upward, the elastic member 4 is compressed, and the first limiting part 311 moves upward away from the second limiting part 12.

[0046] Combination Figure 2 and Figure 3 The top wall of the fixed base 1 is provided with scales 13 arranged circumferentially; the top wall of the head 31 of the adjusting ring 3 is provided with an indicator 312, which points to scale 13. By turning the adjusting ring 3, the indicator 312 can be rotated to indicate different preload forces.

[0047] In this embodiment, the thread between the adjusting ring 3 and the tube clamping component 2 is selected as fine thread M10x1.0. Then, the adjusting ring 3 will generate an axial displacement of 1mm for each rotation. The fixed base 1 has 20 evenly divided scales 13. The adjusting ring 3 can generate an axial displacement of 0.05mm for each rotation. If the stiffness of the elastic component 4 is k=8N / mm, the preload change corresponding to each rotation is 8N, and the preload change corresponding to each rotation is 0.4N. In this way, the different preloads of the cup sleeve assembly 10 can be precisely adjusted.

[0048] To facilitate the fixing and installation of the elastic element 4, the lower part of the fixing base 1 is provided with an annular receiving groove 14, which is coaxially arranged with the central hole 11, and the receiving groove 14 has a downward-facing opening. The upper part of the elastic element 4 is disposed in the receiving groove 14, and the lower part of the elastic element 4 abuts against the abutting part 21.

[0049] To prevent the adjusting ring 3 and the tube clamping component 2 from loosening due to vibration during use, the cup clamping sleeve assembly in this embodiment also includes a braking component 5. The braking component 5 passes through the adjusting ring 3 and is detachably connected to the tube clamping component 2. The detachable connection includes: threaded connection, magnetic connection, and snap-fit ​​connection. In this embodiment, a threaded connection is preferred. Specifically: A stepped hole 33 is provided through the adjusting ring 3. The stepped hole 33 can be located at the center of the adjusting ring 3, or it can be located on one side of the center of the adjusting ring 3. In this embodiment, the former is preferred.

[0050] The pipe clamping component 2 has a mounting hole 24, which corresponds to and communicates with the stepped hole 33. The mounting hole 24 is a threaded hole 23, and the brake component 5 is preferably a brake bolt, which passes through the stepped hole 33 and is connected to the mounting hole 24.

[0051] Example of a sample pretreatment device: See Figure 4 and Figure 5 The sample pretreatment device 20 provided in this embodiment includes a mixing component, a sample turntable component 7, a lifting component 8, and several cup-pressing sleeve components 10 of the above embodiments.

[0052] The sample turntable assembly 7 includes a housing 71, a turntable 72, a sample rotation drive device 73, and a rotation transmission assembly.

[0053] The housing 71 has a receiving cavity 711, and the top wall of the housing 71 is provided with an inlet 712, an outlet 713, and at least one mixing position 714. The inlet 712 and outlet 713 can be arranged overlappingly or independently; in this embodiment, the latter is preferred. This embodiment takes four mixing positions 714 as an example. The inlet 712, outlet 713, and four mixing positions 714 are arranged circumferentially along the housing 71.

[0054] A turntable 72 is rotatably mounted inside the housing 71. The turntable 72 has multiple sample placement holes 721 for placing sample tubes 30. The middle portion of the sample tube 30 is placed inside the sample placement hole 721, while both its upper and lower ends protrude outside the sample placement hole 721. The multiple sample placement holes 721 correspond one-to-one with the input position 712, the output position 713, and four mixing positions 714. The sample tube 30 is inserted through the input position 712, then rotated to the mixing position 714 for mixing, and finally removed from the output position 713 after mixing.

[0055] The sample rotation drive device 73 drives the turntable 72 to rotate around its own axis via a rotation transmission assembly. The sample rotation drive device 73 is preferably a motor. The rotation transmission assembly includes a rotating main shaft 74, a first synchronous belt, a first drive pulley, and a first synchronous pulley. The first drive pulley is disposed on the drive shaft of the sample rotation drive device 73. The first synchronous pulley is sleeved on the lower part of the rotating main shaft 74. The first synchronous belt is wound around the first drive pulley and the first synchronous pulley. The turntable 72 is disposed on the upper part of the rotating main shaft 74 and can rotate synchronously with the rotating main shaft 74.

[0056] The number of cup-pressing sleeve assemblies 10 is equal to the number of mixing positions 714. The cup-pressing sleeve assemblies 10 are disposed on the top wall of the housing 71, and the cup-pressing sleeve assemblies 10 and the mixing positions 714 are arranged in a one-to-one correspondence.

[0057] The mixing component is positioned below the turntable 72 and corresponds vertically to the cup holder assembly 10. The sample placement hole 721 can be rotated between the cup holder assembly 10 and the mixing component. The lifting component 8 can drive the mixing component to move up and down. The lifting component 8 includes a movable plate 81 and a lifting drive device 82. The drive rod of the lifting drive device 82 is connected to the movable plate 81, and the lifting drive device 82 can drive the movable plate 81 to move up and down. The mixing component is positioned on the movable plate 81 and can move up and down in sync with the movable plate 81.

[0058] The mixing assembly includes an eccentric rotary mixing mechanism 6a and / or an ultrasonic mixing mechanism 6b. This embodiment uses both the eccentric rotary mixing mechanism 6a and the ultrasonic mixing mechanism 6b as an example. After the sample tube 30 undergoes dual mixing by the eccentric rotary mixing mechanism 6a and the ultrasonic mixing mechanism 6b, the mixing effect is significantly improved, which is more conducive to improving the accuracy of subsequent diagnostic results.

[0059] Combination Figures 4 to 9 The sample pretreatment device 20 also includes a rotary drive system 6c, and an eccentric rotary mixing mechanism 6a including a mixing seat 61, an eccentric mixing shaft 62, a coupling, a first bearing seat 66, a first bearing 67, a second bearing seat 68, and a second bearing 65. The coupling includes a U-shaped coupling 63 and a U-shaped coupling 64 connected vertically. The eccentric mixing shaft 62 is connected to the rotary drive system 6c via the coupling. Specifically: The mixing seat 61, the eccentric mixing shaft 62, and the first bearing 67 are all housed within the first bearing housing 66. The upper part of the concave coupling 63 passes through the first bearing 67 and connects to the eccentric mixing shaft 62, while the lower part of the concave coupling 63 connects to the convex coupling 64. The lower part of the mixing seat 61 is eccentrically connected to the eccentric mixing shaft 62. The upper part of the mixing seat 61 is provided with a protrusion 611, on which a first mating groove 612 with an upward opening is formed. The bottom groove of the sample tube 30 is fitted onto the outside of the protrusion 611, and the pointed part inside the bottom of the sample tube 30 is embedded in the first mating groove 612 to achieve positioning of the sample tube 30.

[0060] The lower part of the convex coupling 64 is inserted into the second bearing housing 68, and the second bearing 65 is disposed in the second bearing housing 68 and sleeved on the convex coupling 64. The lower part of the convex coupling 64 protrudes from the second bearing housing 68.

[0061] The rotary drive system 6c includes a mixing drive device 6c1, a second drive wheel 6c2, a second synchronous belt 6c3, and a second synchronous pulley 6c4. The mixing drive device 6c1 is preferably a motor. The second drive wheel 6c2 is mounted on the drive shaft of the mixing drive device 6c1. The second synchronous pulley 6c4 is fitted onto the lower part of the U-shaped coupling 64. The second synchronous belt 6c3 is wound around the outside of the second drive wheel 6c2 and the second synchronous pulley 6c4. The mixing drive device 6c1 can drive the coupling and the eccentric mixing shaft 62 to rotate, thereby causing the mixing seat 61 and the sample tube 30 to perform eccentric rotational motion.

[0062] Combination Figure 4 and Figure 5 The sample pretreatment device 20 also includes an ultrasonic controller 6d and an ultrasonic mixing mechanism 6b, which includes an ultrasonic head 6b1. The ultrasonic controller 6d and the ultrasonic head 6b1 are electrically connected. The ultrasonic controller 6d can control the ultrasonic head 6b1 to emit ultrasonic waves to the sample tube 30. A second mating groove 6b11 is provided on the upper part of the ultrasonic head 6b1. The upper part of the ultrasonic head 6b1 can extend into the bottom groove of the sample tube 30, so that the tip of the bottom of the sample can be embedded in the second mating groove 6b11.

[0063] When the sample tube 30 is placed into the sample placement hole 721 of the turntable 72 and rotated to the bottom of the cup sleeve assembly 10, the cup sleeve assembly 10, the sample tube 30 and the mixing assembly do not contact each other. At this time, the elastic element 4 of the cup sleeve assembly 10 is in a stretched state with pre-tightening force. When the lifting component 8 drives the mixing component to rise, the mixing seat 61 and / or the ultrasonic head 6b1 abut against the lower part of the corresponding sample tube 30 and lift the sample tube 30, so that the upper part of the sample tube 30 abuts against the tube pressing component 2 of the corresponding pressure cup sleeve component 10; then, the tube pressing component 2 and the adjusting ring 3 both rise with the sample tube 30, the elastic component 4 is compressed, and the sample tube 30 is fixed under the elastic force of the elastic component 4. After that, the eccentric rotation mixing mechanism 6a and the ultrasonic mixing mechanism 6b can perform the mixing operation.

[0064] The preload of the elastic element 4 corresponding to the eccentric rotary mixing mechanism 6a and the ultrasonic mixing mechanism 6b is different. By turning the adjusting ring 3 in the forward or reverse direction, the distance between the tube pressing component 2 and the fixed seat 1 can be adjusted, thereby adjusting the compression degree of the elastic element 4, so that the elastic element 4 can bear different preloads to meet the application requirements of different occasions.

[0065] In summary, this utility model, by setting the distance between the fixing seat 1 and the abutment part 21 to be adjustable, allows for easy adjustment of this distance according to actual needs, thereby adjusting the compression degree and pre-tightening force of the elastic element 4. This is beneficial for meeting the usage requirements of different mixing occasions, ensuring that the sample tube 30 can be fixed with the most appropriate force in different mixing occasions, facilitating subsequent eccentric rotational oscillation or ultrasonic mixing treatment. This utility model also has the advantages of simple structure and convenient operation.

[0066] Finally, it should be emphasized that the above are only preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cup-pressing sleeve assembly, characterized in that, include: Fixed base; A pipe pressing component, wherein the upper part of the pipe pressing component is movably disposed within the fixed base, and the lower part of the pipe pressing component is provided with an abutting part that protrudes beyond the fixed base; An adjusting ring is provided, the lower part of which is disposed in the fixed seat and connected to the pipe pressing component, and the upper part of which can abut against the upper part of the fixed seat. In the axial direction, the distance from the fixed seat to the abutting part is adjustable. An elastic element is elastically abutted between the fixed seat and the abutting portion.

2. The cup-pressing sleeve assembly according to claim 1, characterized in that: The adjusting ring can rotate relative to the tube pressing component, thereby adjusting the axial position of the tube pressing component.

3. The cup-pressing sleeve assembly according to claim 2, characterized in that: The adjusting ring includes a head and a threaded rod, the outer diameter of the head is larger than the outer diameter of the threaded rod, and the head can abut against the fixed seat; The upper inner side of the tube fitting has a threaded hole, and the threaded rod is threadedly connected to the threaded hole.

4. The cup-pressing sleeve assembly according to claim 2, characterized in that: The adjusting ring includes a head and a guide rod. The outer diameter of the head is larger than the outer diameter of the guide rod. The head can abut against the fixed base. The guide rod has a protrusion on its peripheral wall. The upper inner side of the pipe fitting is provided with an installation groove, and a spiral groove is spirally provided on the groove wall of the installation groove. The protrusion is embedded in the spiral groove and can move along the spiral groove.

5. The cup-pressing sleeve assembly according to claim 2, characterized in that: The upper part of the fixing base is provided with scales arranged circumferentially; The adjustment ring is provided with an indicator, which points to the scale.

6. The cup-pressing sleeve assembly according to claim 2, characterized in that: The cup sleeve assembly also includes a braking component, which passes through the adjusting ring and is detachably connected to the tube pressing component. The detachable connection includes: threaded connection, magnetic connection, and snap-fit ​​connection.

7. A sample pretreatment apparatus, characterized in that: The device includes a mixing component, a sample turntable component, a lifting component, and a cup-pressing sleeve component as described in any one of claims 1 to 6. The sample turntable component includes a housing and a turntable, the turntable being rotatably disposed within the housing and having a sample placement hole. The cup-pressing sleeve component is disposed on the top wall of the housing, the mixing component is disposed below the cup-pressing sleeve component, the sample placement hole being rotatable between the cup-pressing sleeve component and the mixing component, and the lifting component being capable of driving the mixing component to move up and down.

8. The sample pretreatment apparatus according to claim 7, characterized in that: The mixing assembly includes an eccentric rotary mixing mechanism and / or an ultrasonic mixing mechanism.

9. The sample pretreatment apparatus according to claim 8, characterized in that: The sample pretreatment device further includes a rotary drive system. The eccentric rotary mixing mechanism includes a mixing seat, an eccentric mixing shaft, and a coupling. The upper part of the mixing seat is provided with a protrusion, and a first mating groove is provided on the protrusion. The lower part of the mixing seat is eccentrically connected to the eccentric mixing shaft. The eccentric mixing shaft is connected to the rotary drive system through the coupling. The rotary drive system can drive the coupling and the eccentric mixing shaft to rotate, thereby driving the mixing seat to perform eccentric rotary motion.

10. The sample pretreatment apparatus according to claim 8, characterized in that: The sample pretreatment device further includes an ultrasonic controller, and the ultrasonic mixing mechanism includes an ultrasonic head. The ultrasonic controller and the ultrasonic head are electrically connected, and a second mating groove is provided on the upper part of the ultrasonic head.

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