Blending device and sample analyzer

Abstract

The mixing device is used for shaking a test tube to mix a reagent, the mixing device comprises a base frame and a swing mechanism, the swing mechanism comprises a test tube seat and an elastic limiting assembly, the test tube seat is in swing connection with the base frame, a mounting hole is formed in the test tube seat, one end of the elastic limiting assembly is arranged on the test tube seat, and the other end of the elastic limiting assembly is arranged on the base frame. The other end of the elastic limiting assembly is elastically propped against the test tube, so that the test tube is fixed in the mounting hole; wherein the swing mechanism drives the test tube to swing back and forth in a vertical plane. The utility model aims to provide the swinging mixing device which is different from the existing rotating and vibrating mixing, and the mixing quality and the mixing efficiency are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of biomedical equipment, in particular to a mixing device and a sample analyzer. Background Art

[0002] Before biomedical samples are tested and analyzed by automated instruments, the mixture of samples, reagents, etc. in the test tube needs to be mixed to facilitate subsequent analysis, testing and observation.

[0003] There are many ways to mix, such as eccentric rotation mixing, oscillation mixing, etc. However, in the above-mentioned mixing methods, the movement amplitude during the mixing process is small, and it is impossible to quickly achieve mixing in a short time. If the mixing time is to be reduced, the rotation or oscillation speed needs to be increased. However, too fast a speed will also cause problems such as damaging samples such as red blood cells in the blood, and it is impossible to take into account both the sample mixing quality and mixing efficiency. Utility Model Content

[0004] The main purpose of the utility model is to provide a mixing device and a sample analyzer, aiming to provide a swing mixing device which is different from the existing rotation and vibration mixing, and ensures the mixing quality and mixing efficiency.

[0005] To achieve the above object, the utility model provides a mixing device for shaking a test tube to mix reagents, the mixing device comprising:

[0006] Scaffolding; and

[0007] A swing mechanism, the swing mechanism comprising a test tube seat and an elastic limiting assembly, the test tube seat is swingably connected to the base frame, the test tube seat is formed with a mounting hole, one end of the elastic limiting assembly is arranged on the test tube seat, and the other end of the elastic limiting assembly elastically abuts against the test tube so that the test tube is fixed in the mounting hole;

[0008] Wherein, the swing mechanism drives the test tube to swing back and forth in a vertical plane.

[0009] In one embodiment, the elastic limiting assembly includes a first butt piece and a second butt piece, and the first butt piece and the second butt piece are arranged on both sides of the test tube holder along the swinging direction, and a limiting space is formed between the first butt piece and the second butt piece, and the limiting space is connected to the mounting hole for limiting the placement of the test tube.

[0010] In one embodiment, the test tube holder is further provided with a mounting groove communicating with the mounting hole;

[0011] The first abutting piece includes a first mounting portion and an elastic abutting portion, the first mounting portion is connected to the test tube holder, the elastic abutting portion is connected to the first mounting portion, and the elastic abutting portion is used to abut against the test tube.

[0012] In one embodiment, the second abutment sheet comprises:

[0013] A second mounting portion, the second mounting portion being connected to the test tube holder; and

[0014] An elastic arm is connected to the second mounting portion, and an elastic protrusion is provided at one end of the elastic arm away from the second mounting portion. The elastic protrusion protrudes toward the first abutting piece to abut against the test tube.

[0015] In one embodiment, each of the test tube holders is provided with at least two mounting holes;

[0016] The elastic limiting assembly includes at least two of the first buckling pieces and at least two of the second buckling pieces, so that each of the first buckling pieces and each of the second buckling pieces are arranged corresponding to one of the mounting holes;

[0017] Alternatively, the first abutment piece includes at least two elastic abutment portions, at least two of the elastic abutment portions are connected to the first mounting portion, the second abutment piece includes at least two elastic arms, at least two of the elastic arms are connected to the second mounting portion, and each of the elastic abutment portions and each of the elastic arms is arranged corresponding to one of the mounting holes.

[0018] In one embodiment, the first abutment piece and / or the second abutment piece extends along the axial direction of the mounting hole;

[0019] And / or, the length of the second retaining piece along the axial direction of the mounting hole is greater than the length of the first retaining piece along the axial direction of the mounting hole.

[0020] In one embodiment, the mixing device comprises at least two swing mechanisms, and at least two of the swing mechanisms are arranged on the base frame at intervals along the swing direction of the test tube holder;

[0021] The mixing device further comprises a driving member and a synchronous belt assembly, wherein the driving member is arranged on the base frame, the synchronous belt assembly is connected to the output end of the driving member, and the synchronous belt assembly is drivingly connected to at least two of the test tube holders.

[0022] In one embodiment, the base frame includes a bottom plate and two vertical plates, the two vertical plates are arranged in parallel and spaced apart on the bottom plate, and the two vertical plates and the bottom plate are surrounded to form a movement gap;

[0023] The swing mechanism is arranged in the movement gap and is rotatably connected to the two vertical plates respectively to drive the test tube to swing in the movement gap.

[0024] In one embodiment, the vertical plate is provided with a guide groove, and the guide groove is arranged in an arc shape with the rotation center of the test tube holder as the center of the circle;

[0025] The test tube holder is provided with a guide post, which extends into the guide groove and abuts against the groove wall of the guide groove;

[0026] And / or, the mixing device further comprises a collecting tray, wherein the collecting tray is arranged on the bottom plate, and the collecting tray is used for collecting leaked liquid.

[0027] The utility model also provides a sample analyzer, which comprises the mixing device as described above.

[0028] The mixing device of the technical solution of the utility model is used for shaking the test tube to mix the reagent. The mixing device is provided with a base frame, and the base frame is used for installing a swinging mechanism. The swinging mechanism includes a test tube seat and an elastic limiting component. The test tube seat is swingably connected to the base frame, and a mounting hole is formed on the test tube seat. The mounting hole is used for placing the test tube. The mixing device is also provided with an elastic limiting component, one end of the elastic limiting component is arranged on the test tube seat, and the other end of the elastic limiting component elastically abuts the test tube. The test tube is fixed in the mounting hole by the elastic limiting component, thereby improving the firmness of the test tube installation on the basis of ensuring the convenience of test tube installation, ensuring the safety and stability of the reagent mixing process, and the swing mixing device can also simulate the strength and speed of manually shaking the test tube to ensure the mixing quality and mixing efficiency at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0030] Figure 1 This is a schematic diagram of the structure of a mixing device in one embodiment of the utility model;

[0031] Figure 2 It is a structural schematic diagram of another perspective of the mixing device in one embodiment of the utility model;

[0032] Figure 3 This is a structural schematic diagram of a mixing device in an embodiment of the utility model from another perspective;

[0033] Figure 4 This is an exploded schematic diagram of a mixing device in one embodiment of the utility model;

[0034] Figure 5 This is a schematic diagram of the structure of a mixing device in another embodiment of the utility model;

[0035] Figure 6This is a structural schematic diagram of a swing mechanism in one embodiment of the utility model;

[0036] Figure 7 This is an exploded schematic diagram of a swing mechanism in one embodiment of the utility model;

[0037] Figure 8 This is a schematic structural diagram of the first abutment piece in one embodiment of the utility model;

[0038] Fig. 9 It is a schematic structural diagram of the second abutment piece in one embodiment of the utility model.

[0039] Description of Figure Numbers:

[0040] Label name Label name 100 Mixing device 2212 Elastic contact part 1 Scaffolding 2212a First bending section 11 Base Plate 2212b The second bending section 12 Riser 222 Second arrival film 121 Guide groove 2221 Second installation part 13 Movement gap 2222 Elastic Arm 2 Swing mechanism 2223 Elastic protrusion 21 Test tube holder 223 Limited space 211 Mounting holes 3 Drive parts 212 Mounting slot 4 Timing belt components 22 Elastic limiter assembly 5 Collection tray 221 First arrival film 6 Busbar 2211 First installation part 7 test tube

[0041] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0043] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0044] At the same time, the meaning of "and / or" or "and / or" appearing in the full text includes three options. Taking "A and / or B" as an example, it includes option A, or option B, or a option in which both A and B are satisfied.

[0045] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0046] Please refer to Figures 1 to 9 As shown, in order to achieve the above-mentioned purpose, the utility model proposes a mixing device 100 for shaking the test tube 7 to mix the reagent, the mixing device 100 includes a base frame 1 and a swinging mechanism 2, the swinging mechanism 2 includes a test tube seat 21 and an elastic limiting component 22, the test tube seat 21 is swingably connected to the base frame 1, the test tube seat 21 is formed with a mounting hole 211, one end of the elastic limiting component 22 is arranged on the test tube seat 21, and the other end of the elastic limiting component 22 elastically abuts against the test tube 7 to fix the test tube 7 in the mounting hole 211; wherein, the swinging mechanism 2 drives the test tube 7 to swing back and forth in a vertical plane.

[0047] In this embodiment, the mixing device 100 is used to achieve uniform mixing of the sample and reagent in the test tube 7 by shaking the test tube 7. Figure 1 and Figure 5 As shown, Figure 1 The initial state of the test tube 7 in the mixing device 100, or the state in the vertical direction during the mixing process, is shown. Figure 5 It is shown that during the mixing process of the mixing device 100, the test tube 7 is in a tilted state. The mixing device 100 can be mixed manually or automatically by a motor. The mixing device 100 is provided with a base frame 1. The base frame 1 is a structural support component of the mixing device 100, and is used to install and support the swing mechanism 2. At the same time, the base frame 1 is also used to install the mixing device 100 as a whole in the sample detection instrument. The base frame 1 can be a mounting frame, a support seat or other structures, which are not limited here.

[0048] In this embodiment, the swing mechanism 2 includes a test tube holder 21 and an elastic limit assembly 22. The test tube holder 21 is formed with a mounting hole 211, so that one end of the test tube 7 can be inserted into the mounting hole 211, so that the test tube 7 can be installed and placed on the test tube holder 21. In addition, the number of mounting holes 211 can be set to multiple, and the multiple mounting holes 211 can be arranged in a rectangular array. A test tube 7 is set in each mounting hole 211, which can drive multiple test tubes 7 to move when the test tube holder 21 swings relative to the base frame 1.

[0049] At the same time, the test tube holder 21 is rotatably connected to the base 1, so that the test tube holder 21 can swing relative to the base 1 together with the test tube 7. The test tube holder 21 can be connected to the base 1 through a rotating shaft, and the rotating shaft is arranged on the side wall of the test tube holder 21. The base 1 is provided with a rotating hole corresponding to the rotating shaft, so that the rotating shaft extends into the rotating hole, and the axial direction of the rotating shaft is perpendicular to the swing direction of the test tube 7 driven by the test tube holder 21.

[0050] It is understandable that if Figure 1As shown, the swing mechanism 2 drives the test tube 7 to swing through the test tube holder 21, that is, drives the test tube 7 to swing back and forth within a certain angle in the vertical plane, wherein the axis of the rotating shaft is defined as the first direction, and the axis of the mounting hole 211 is defined as the second direction, the first direction and the second direction are perpendicular to each other, and the test tube holder 21 and the test tube 7 swing at a certain angle with the first direction as the rotating axis, thereby achieving mixing of the reagents and samples in the test tube 7, and further, in the second direction (along the axis direction of the mounting hole 211), compared with the bottom of the test tube holder 21, the rotating shaft is arranged between the bottom of the test tube holder 21 and the end of the test tube 7 provided with the test tube cap, so that there is a certain distance between the bottom end of the test tube 7 and the axis of the rotating shaft, so that in the process of swinging and mixing, the bottom of the test tube 7 will also produce a larger angle of swing, effectively improving the mixing effect of the bottom of the test tube.

[0051] In another embodiment of the present invention, Figure 1 , Figure 4 as well as Figure 5 As shown, the mixing device 100 also includes a driving member 3 and a controller. The driving member 3 can be a servo motor or a stepping motor. The controller outputs rotation direction data and rotation angle data to control the driving member 3. That is, during the actual swinging process of the test tube holder 21 and the test tube 7, after reaching the maximum swinging angle, the controller controls the driving member 3 to reverse and swing along the other side of the third direction or return to the origin in the vertical direction, thereby realizing the reciprocating swinging motion of the test tube 7 with the second direction as the axis of the rotation shaft.

[0052] Furthermore, an encoder may be provided to control the rotation speed of the driving member 3 , so that different mixing speeds can be applied to different types of samples, thereby effectively improving the versatility and applicability of the mixing device 100 and enhancing the mixing efficiency.

[0053] In this embodiment, the elastic limiting component 22 is arranged on the test tube holder 21. The elastic limiting component 22 is an elastic snap-fit ​​structure. The elastic limiting component 22 can limit and abut the test tube 7 on one side or both sides in a direction perpendicular to the test tube 7, and can also limit and abut the test tube 7 in multiple directions around the test tube 7. One end of the elastic limiting component 22 is fixedly connected to the test tube holder 21, and the other end is an elastic abutting end, which can tightly abut the wall of the test tube 7 through the abutting end, so that the test tube 7 is tightly arranged in the mounting hole 211 and keeps tightly connected with the test tube holder 21.

[0054] It can be understood that the use of the elastic limiting component 22 can not only cooperate with the mounting hole 211 to limit the placement of the test tube 7, but also apply elastic buckling to the test tube 7 to ensure that the test tube 7 does not loosen or shake during the swinging and mixing process, thereby improving the stability and safety of the mixing. At the same time, the setting of the elastic limiting component 22 can also adapt to test tubes 7 of different diameters, that is, under a certain elastic margin, test tubes 7 of different diameters can be elastically clamped to improve the versatility and applicability of the mixing device 100.

[0055] The mixing device 100 of the present novel technical solution is used for shaking the test tube 7 to mix the reagent. The mixing device 100 is provided with a base frame 1, and the base frame 1 is used for installing a swinging mechanism 2. The swinging mechanism 2 includes a test tube holder 21 and an elastic limiting assembly 22. The test tube holder 21 is swingably connected to the base frame 1, and the mounting hole 211 is used to place the test tube 7. The mixing device 100 is also provided with an elastic limiting assembly 22, one end of the elastic limiting assembly 22 is arranged on the test tube holder 21, and the other end of the elastic limiting assembly 22 elastically abuts the test tube 7, and the test tube holder 21 is formed with a mounting hole 211. The test tube 7 is fixed in the mounting hole 211 by the elastic limiting assembly 22, thereby improving the firmness of the installation of the test tube 7 on the basis of ensuring the convenience of installing the test tube 7, ensuring the safety and stability of the reagent mixing process, and through the swinging mixing device 100, the strength and speed of manually shaking the test tube 7 can also be simulated to ensure the quality and efficiency of mixing at the same time.

[0056] In one embodiment, the elastic limiting assembly 22 includes a first butt piece 221 and a second butt piece 222. The first butt piece 221 and the second butt piece 222 are arranged on both sides of the test tube holder 21 along the swinging direction. A limiting space 223 is formed between the first butt piece 221 and the second butt piece 222. The limiting space 223 is connected to the mounting hole 211 and is used to limit the placement of the test tube 7.

[0057] In this embodiment, if Figures 1 to 9 As shown, the first butt piece 221 and the second butt piece 222 are both arranged on the test tube holder 21, the first butt piece 221 is arranged on one side of the test tube holder 21 along the second direction, and the second butt piece 222 is arranged relatively spaced apart from the first butt piece 221, and is arranged on the other side of the test tube holder 21 along the second direction, so that the first butt piece 221 and the second butt piece 222 can perform two-way limiting butt contact on the test tube 7 in the swinging direction, and the first butt piece 221 and the second butt piece 222 have the same structure, and the first butt piece 221 and the second butt piece 222 can be elastically connected to the test tube holder 21, such as being elastically connected to the test tube holder 21 through a torsion spring or a plate spring or a compression spring, or it can be an elastic buckling force generated by the elastic mechanical properties of the material of the first butt piece 221 or the second butt piece 222 itself, etc., which is not limited here.

[0058] Furthermore, the sizes of the first butt piece 221 and the second butt piece 222 can be the same, so that the abutting end of the first butt piece 221 and the abutting end of the second butt piece 222 abut the outer wall of the test tube 7 at the same height, and cooperate with the hole wall of the mounting hole 211 to tightly connect the test tube 7 to the test tube holder 21; or the sizes of the first butt piece 221 and the second butt piece 222 are different, one of the first butt piece 221 and the second butt piece 222 abuts the outer wall of the test tube 7 near the bottom, and the other of the first butt piece 221 and the second butt piece 222 abuts the outer wall of the test tube 7 near the mouth.

[0059] It can be understood that by providing the first butt piece 221 and the second butt piece 222, the test tube 7 can be limited and abutted in the swinging direction of the test tube 7, thereby improving the safety and stability of the test tube 7 during swinging and preventing the test tube 7 from loosening. In addition, test tubes 7 of different sizes can be directly inserted into the mounting hole 211 and elastically tightened by the first butt piece 221 and the second butt piece 222, without the need to use a traditional fixing structure to fix the test tube 7. This reduces the steps of opening and closing the relevant fixing structures before and after inserting the test tube 7 into the test tube holder 21 in the traditional mixing procedure, thereby improving the overall work efficiency of the installation and mixing of the test tube 7.

[0060] Of course, the elastic limiting assembly 22 may also include four abutments, which are spaced apart along the radial direction of the test tube holder 21, one end of the four abutments is connected to the test tube holder 21, and the other end abuts against the test tube 7, thereby improving the safety and stability of the test tube 7 when swinging, and preventing the test tube 7 from loosening or even falling.

[0061] Similarly, the elastic limiting component 22 may also include 3 or 6 abutments, and the configuration and connection method thereof are similar to those described above and will not be described in detail here.

[0062] In one embodiment, the test tube holder 21 is further provided with a mounting groove 212 connected to the mounting hole 211; the first abutment piece 221 includes a first mounting portion 2211 and an elastic abutment portion 2212, the first mounting portion 2211 is connected to the test tube holder 21, the elastic abutment portion 2212 is connected to the first mounting portion 2211, and the elastic abutment portion 2212 is used to abut the test tube 7.

[0063] It should be noted that the elastic abutting portion 2212 can extend into the mounting hole 211 to abut against the test tube 7 , or can protrude from the test tube holder 21 to abut against the test tube 7 .

[0064] In this embodiment, if Figure 6 and Figure 7As shown, the mounting groove 212 is arranged on one side or both sides of the test tube holder 21 along the swinging direction. The mounting groove 212 can be arranged to penetrate the test tube holder 21 so that the mounting hole 211 is connected with the external space, or it can be arranged on the hole wall of the mounting hole 211 to be connected with the mounting hole 211. The groove body of the mounting groove 212 can be extended in a straight line along the axial direction of the mounting hole 211, or it can be arranged in a ring shape around the axis of the mounting hole 211. At the same time, the elastic abutment portion 2212 and the first mounting portion 2211 can be integrally connected or elastically connected. The first mounting portion 2211 is arranged on the test tube holder 21, such as being arranged in the mounting groove 212 or on the hole wall of the mounting hole 211, and all or part of the elastic abutment portion 2212 passes through the mounting groove 212 and extends into the mounting hole 211 to abut the test tube 7.

[0065] It can be understood that when the groove body of the mounting groove 212 extends in a straight line along the axial direction of the mounting hole 211, the first mounting portion 2211 also extends along the axial direction of the mounting hole 211. At this time, the first mounting portion 2211 can be arranged inside or outside the mounting groove 212, and the elastic abutment portion 2212 passes through the mounting groove 212 and extends into the mounting hole 211, abutting against the side wall of the test tube 7 on one side or both sides along the swinging direction; when the groove body of the mounting groove 212 is arranged in a ring shape along the axis of the mounting hole 211, the first mounting portion 2211 and the elastic abutment portion 2212 are both arranged in a ring shape in the mounting groove 212. In the embodiment, the elastic abutment portion 2212 surrounds and abuts against the outer wall of the test tube 7 at a certain height, thereby effectively improving the fixing effect of the test tube 7. At the same time, the elastic abutment portion 2212 can generate an elastic abutment force on the test tube 7 through the elastic force of the material of the first mounting portion 2211 itself, or can generate an elastic abutment force through an elastic connection with the first mounting portion 2211. Through the elastic force of the elastic abutment portion 2212, it can extend into the mounting hole 211 and tightly abut against the test tube 7, thereby effectively improving the fixing effect of the test tube 7, while facilitating the insertion and removal of the test tube 7 and improving the mixing efficiency.

[0066] In another embodiment of the present invention, Figure 8As shown, the elastic abutment portion 2212 includes a first bending section 2212a and a second bending section 2212b, the first bending section 2212a is connected to the first mounting portion 2211, and the extension direction of the first bending section 2212a is set at an angle with the extension direction of the first mounting portion 2211, so that the first bending section 2212a extends toward the mounting hole 211, and the second bending section 2212b is connected to the end of the first bending section 2212a away from the connection with the first mounting portion 2211, and at the same time, the extension direction of the second bending section 2212b is the same as the extension direction of the first bending section 2212a. The extension direction of the first mounting portion 2211 is different from that of the first bending section 2212a, and they are arranged at an angle to each other. With such an arrangement, the elastic abutment against the test tube 7 can be achieved through the elastic change of the first bending section 2212a relative to the first mounting portion 2211, so that the elastic abutment portion 2212 has a certain elastic margin and can adapt to test tubes 7 of different sizes. At the same time, an arc-shaped connecting section is formed at the connection between the first bending section 2212a and the second bending section 2212b, which can prevent the elastic abutment portion 2212 from scratching the wall of the test tube 7 and enhance the elastic abutment force of the elastic abutment portion 2212.

[0067] In one embodiment, the second abutment 222 includes a second mounting portion 2221 and an elastic arm 2222, the second mounting portion 2221 is connected to the test tube holder 21, the elastic arm 2222 is connected to the second mounting portion 2221, and an elastic protrusion 2223 is provided at one end of the elastic arm 2222 away from the second mounting portion 2221, and the elastic protrusion 2223 protrudes toward the direction of the first abutment 221 for abutting against the test tube 7.

[0068] It is understandable that if Fig. 9 As shown, the elastic arm 2222 can be metal or plastic, and generates elastic force through its own elasticity, and abuts the test tube 7 through the elastic protrusion 2223. The elastic protrusion 2223 can be an elastic part, such as a compression spring structure, or a bending part. That is, the elastic arm 2222 and the elastic protrusion 2223 can both produce elastic abutment on the test tube 7, thereby improving the fixing effect of the test tube 7 and ensuring the stability of the test tube 7 during the mixing process.

[0069] In one embodiment, each test tube holder 21 is provided with at least two mounting holes 211; the elastic limiting assembly 22 includes at least two first abutments 221 and at least two second abutments 222, so that each first abutment 221 and each second abutment 222 are provided corresponding to a mounting hole 211; or, the first abutment 221 includes at least two elastic abutment portions 2212, at least two elastic abutment portions 2212 are connected to the first mounting portion 2211, and the second abutment 222 includes at least two elastic arms 2222, at least two elastic arms 2222 are connected to the second mounting portion 2221, and each elastic abutment portion 2212 and each elastic arm 2222 are provided corresponding to a mounting hole 211.

[0070] In this embodiment, if Figure 6 and Figure 7 As shown, each test tube holder 21 is provided with at least two mounting holes 211. The at least two mounting holes 211 can be arranged in a rectangular array along a direction perpendicular to the swinging direction of the test tube holder 21, or can be arranged in a rectangular array along the swinging direction of the test tube holder 21. The elastic limiting assembly 22 is provided with a first retaining piece 221 and a second retaining piece 222 corresponding to each mounting hole 211, so that a first retaining piece 221 and a second retaining piece 222 simultaneously limit a test tube 7 in the mounting hole 211.

[0071] Furthermore, each first resist piece 221 is provided with at least two elastic abutment portions 2212 corresponding to the number of mounting holes 211, and at least two elastic abutment portions 2212 are simultaneously connected to a first mounting portion 2211; each second resist piece 222 is provided with at least two elastic arms 2222 corresponding to the number of mounting holes 211, and at least two elastic arms 2222 are simultaneously connected to a second mounting portion 2221.

[0072] It can be understood that each test tube holder 21 is provided with at least two mounting holes 211, so that one test tube holder 21 can simultaneously install and place at least two test tubes 7, effectively improving the load-bearing capacity of the test tube holder 21 and improving the efficiency of batch mixing. At the same time, based on the above-mentioned situation of setting at least two mounting holes 211, by setting at least two elastic abutment portions 2212 on the first abutment piece 221 and at least two elastic arms 2222 on the second abutment piece 222, it is possible to ensure that the first abutment piece 221 and the second abutment piece 222 can effectively elastically limit the abutment of at least two test tubes 7. Furthermore, the first mounting portion 2211 and the second mounting portion 2221 can be directly connected to the test tube holder 21, so as to realize the installation of at least two elastic abutment portions 2212 and at least two elastic arms 2222, thereby effectively improving the installation efficiency of the first abutment piece 221 and the second abutment piece 222.

[0073] In one embodiment, the first retaining piece 221 and / or the second retaining piece 222 extends along the axial direction of the mounting hole 211; optionally, the length of the second retaining piece 222 along the axial direction of the mounting hole 211 is greater than the length of the first retaining piece 221 along the axial direction of the mounting hole 211.

[0074] It is understandable that if Figures 1 to 7As shown, the first abutment piece 221 and / or the second abutment piece 222 may extend along the axis of the mounting hole 211 (i.e., the length direction of the test tube 7), so as to be able to limit the abutment against the test tube 7 at any height in the length direction of the test tube 7, thereby improving the adaptability to test tubes 7 of different sizes and types, while also ensuring the stability and safety of the test tube 7 during the swinging process. Optionally, the length of the second abutment piece 222 along the axis direction of the mounting hole 211 is greater than the length of the first abutment piece 221 along the axis direction of the mounting hole 211, so that the second abutment piece 222 and the first abutment piece 221 can abut against the test tube 7 at different heights along the length direction, wherein the second abutment piece 222 abuts against the tube mouth (or tube cap) of the test tube 7, and the first abutment piece 221 abuts against the tube bottom of the test tube 7, effectively improving the fixing effect of the test tube 7 as a whole.

[0075] In one embodiment, the mixing device 100 includes at least two swinging mechanisms 2, and at least two swinging mechanisms 2 are arranged on the base frame 1 at intervals along the swinging direction of the test tube holder 21; the mixing device 100 also includes a driving member 3 and a synchronous belt assembly 4, the driving member 3 is arranged on the base frame 1, the synchronous belt assembly 4 is connected to the output end of the driving member 3, and the synchronous belt assembly 4 is transmission-connected to at least two test tube holders 21.

[0076] In this embodiment, if Figures 1 to 5 As shown, at least two swing mechanisms 2 are arranged at intervals on the base frame 1, wherein the test tube holder 21 can be swung on the left and right sides in the horizontal direction, or on the upper and lower sides in the vertical direction. Therefore, at least two swing mechanisms 2 can be arranged at intervals in the horizontal direction, or can be arranged at intervals in the vertical direction.

[0077] At the same time, the mixing device 100 also includes a driving member 3 and a synchronous belt assembly 4 that is transmission-connected to the output end of the driving member 3. The synchronous belt assembly 4 includes a driving wheel and at least two driven wheels, and a synchronous belt wound around the driving wheel and the driven wheels. The driving wheel is connected to the output end of the driving member 3, and each driven wheel is connected to the rotating shaft of a swing mechanism 2. The synchronous belt is driven to rotate by the driving member 3 to drive at least two swing mechanisms 2 to swing.

[0078] It can be understood that the mixing device 100 is provided with at least two swing mechanisms 2, which can further increase the number of test tubes 7 placed, and realize swing mixing at the same time under the drive of the same driving member 3, effectively improving the mixing efficiency and enhancing the batch processing capacity of samples.

[0079] In one embodiment, the base frame 1 includes a bottom plate 11 and two vertical plates 12. The two vertical plates 12 are arranged in parallel and at intervals on the bottom plate 11. The two vertical plates 12 and the bottom plate 11 enclose a movement gap 13. The swing mechanism 2 is arranged in the movement gap 13 and is rotatably connected to the two vertical plates 12 respectively to drive the test tube 7 to swing in the movement gap 13.

[0080] It is understandable that if Figures 1 to 5 As shown, the bottom plate 11 is the structural support foundation of the base frame 1, and the two vertical plates 12 are arranged in parallel and at intervals on the bottom plate 11. The two vertical plates 12 and the bottom plate 11 together enclose a motion gap 13 for placing the swing mechanism 2. The motion gap 13 can extend in the horizontal direction or in the vertical direction, so that at least two swing mechanisms 2 can be arranged in the motion gap 13 at intervals in the horizontal direction or the vertical direction. Specifically, the axis of the rotating shaft of the swing mechanism 2 is perpendicular to the plate surface of the two vertical plates 12 and passes through the motion gap 13, so as to provide stable support for the swing mechanism 2. Furthermore, the synchronous belt assembly 4 is arranged on one of the two vertical plates 12 to realize the transmission connection between the driving member 3 and at least two swing mechanisms 2.

[0081] In one embodiment, the vertical plate 12 is provided with a guide groove 121, which is arranged in an arc shape with the rotation center of the test tube holder 21 as the center; the test tube holder 21 is provided with a guide column, which extends into the guide groove 121 and abuts against the groove wall of the guide groove 121; optionally, the mixing device 100 also includes a collecting tray 5, which is arranged on the bottom plate 11 and is used to collect leaked liquid.

[0082] In this embodiment, if Figure 1 , Figure 4 and Figure 5 As shown, guide grooves 121 are provided on both vertical plates 12, and the two guide grooves 121 are arranged opposite to each other in the horizontal direction. The arc shape of the guide groove 121 is a circle with the rotation center of the test tube holder 21 as a circle, and is set with a radius not greater than the height of the entire test tube holder 21 along the axial direction of the mounting hole 211, and the guide groove 121 is a part of the arc, such as 1 / 4 of the circumference. A guide column is provided on the side wall of the test tube holder 21 facing the two vertical plates 12, and the guide column can extend into the guide groove 121. In the process of the test tube holder 21 driving the test tube 7 to swing, the guide column moves along the guide groove 121, as shown in FIG. Figure 1 As shown, when the test tube 7 is in the initial state or in the vertical state during the mixing process, the guide column is located at the bottom of the guide groove 121, as shown in FIG. Figure 5 As described above, when the test tube 7 is in a tilted state during the mixing process, the guide post is located at the top of the guide groove 121, so that the maximum stroke and maximum angle of the swing of the test tube 7 during the mixing process are limited by the arc length and arc of the guide groove 121.

[0083] It can be understood that the guide groove 121 can limit the swing amplitude of the test tube holder 21 by limiting the moving trajectory of the guide column to ensure that the test tube holder 21 can swing within a certain angle. The guide groove 121 and the guide column are the mechanical limiting structure of the mixing device 100, which avoids the danger caused by excessive swing amplitude of the test tube holder 21 due to circuit system failure, thereby improving the safety performance of the mixing device 100.

[0084] It can be understood that the collecting tray 5 is disposed on the bottom plate 11 , and the collecting tray 5 is used to collect the sample liquid leaked from the test tube 7 during the shaking and mixing process to prevent the sample from contaminating the working environment.

[0085] In another embodiment of the utility model, the mixing device 100 also includes a collection plate 6, which is connected to the vertical plate 12 and is located in the movement gap 13. The collection plate 6 and the collecting plate 5 are spaced apart in the vertical direction, and the collection plate 6 is provided with a collection port connected to the collecting plate 5. The diameter of the collection port is gradually reduced from one end away from the collecting plate 5 to the end connected to the collecting plate 5, so that when the liquid flows from the collection plate 6 to the collecting plate 5, the liquid can be concentratedly guided to the collecting plate 5, thereby avoiding the risk of splashing and leakage caused by unstable liquid flow, thereby improving the biological safety during the mixing process.

[0086] The present invention also provides a sample analyzer, which includes a sample detection device, a sample transport device and the above-mentioned mixing device 100, and the sample transport device is used to transport the sample between the sample detection device and the mixing device 100. The specific structure of the mixing device 100 refers to the above-mentioned embodiment. Since the present sample analyzer adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0087] In another embodiment of the utility model, the sample analyzer further comprises a gripping mechanism, which is used to grab the test tube 7 arranged in the mixing device 100 and transfer the test tube 7 to other areas. Specifically, a tube cap is arranged at the tube mouth of the test tube 7, and the edge of the tube cap protrudes from the outer wall of the test tube 7, so that the gripping mechanism can be clamped on the edge of the tube cap. By providing an elastic limiting component 22, the gripping mechanism can directly pull the test tube 7 out of the mounting hole 211, or insert the test tube 7 into the mounting hole 211, thereby effectively improving the efficiency and convenience of transferring the test tube 7.

[0088] The above description is only an optional embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A mixing device for shaking a test tube to mix a reagent, characterized in that: The mixing device comprises: Scaffolding; and A swing mechanism, the swing mechanism comprising a test tube seat and an elastic limiting assembly, the test tube seat is swingably connected to the base frame, the test tube seat is formed with a mounting hole, one end of the elastic limiting assembly is arranged on the test tube seat, and the other end of the elastic limiting assembly elastically abuts against the test tube so that the test tube is fixed in the mounting hole; Wherein, the swing mechanism drives the test tube to swing back and forth in a vertical plane.

2. The mixing device according to claim 1, characterized in that: The elastic limiting assembly includes a first butt piece and a second butt piece, the first butt piece and the second butt piece are arranged on both sides of the test tube holder along the swinging direction, a limiting space is formed between the first butt piece and the second butt piece, and the limiting space is connected to the mounting hole for limiting the placement of the test tube.

3. The mixing device according to claim 2, characterized in that: The test tube holder is also provided with a mounting groove communicating with the mounting hole; The first abutting piece includes a first mounting portion and an elastic abutting portion, the first mounting portion is connected to the test tube holder, the elastic abutting portion is connected to the first mounting portion, and the elastic abutting portion is used to abut against the test tube.

4. The mixing device according to claim 3, characterized in that: The second contact piece comprises: A second mounting portion, the second mounting portion being connected to the test tube holder; and An elastic arm is connected to the second mounting portion, and an elastic protrusion is provided at one end of the elastic arm away from the second mounting portion. The elastic protrusion protrudes toward the first abutting piece to abut against the test tube.

5. The mixing device according to claim 4, characterized in that: Each of the test tube holders is provided with at least two mounting holes; The elastic limiting assembly includes at least two of the first buckling pieces and at least two of the second buckling pieces, so that each of the first buckling pieces and each of the second buckling pieces are arranged corresponding to one of the mounting holes; Alternatively, the first abutment piece includes at least two elastic abutment portions, at least two of the elastic abutment portions are connected to the first mounting portion, the second abutment piece includes at least two elastic arms, at least two of the elastic arms are connected to the second mounting portion, and each of the elastic abutment portions and each of the elastic arms is arranged corresponding to one of the mounting holes.

6. The mixing device according to claim 2, characterized in that: The first abutment piece and / or the second abutment piece extend along the axial direction of the mounting hole; And / or, the length of the second retaining piece along the axial direction of the mounting hole is greater than the length of the first retaining piece along the axial direction of the mounting hole.

7. The mixing device according to any one of claims 1 to 6, characterized in that: The mixing device comprises at least two swing mechanisms, and at least two of the swing mechanisms are arranged on the base frame at intervals along the swing direction of the test tube holder; The mixing device further comprises a driving member and a synchronous belt assembly, wherein the driving member is arranged on the base frame, the synchronous belt assembly is connected to the output end of the driving member, and the synchronous belt assembly is drivingly connected to at least two of the test tube holders.

8. The mixing device according to any one of claims 1 to 6, characterized in that: The base frame includes a bottom plate and two vertical plates, the two vertical plates are arranged in parallel and spaced apart on the bottom plate, and the two vertical plates and the bottom plate are surrounded to form a movement gap; The swing mechanism is arranged in the movement gap and is rotatably connected to the two vertical plates respectively to drive the test tube to swing in the movement gap.

9. The mixing device according to claim 8, characterized in that: The vertical plate is provided with a guide groove, and the guide groove is arranged in an arc shape with the rotation center of the test tube holder as the center of the circle; The test tube holder is provided with a guide post, which extends into the guide groove and abuts against the groove wall of the guide groove; And / or, the mixing device further comprises a collecting tray, wherein the collecting tray is arranged on the bottom plate, and the collecting tray is used for collecting leaked liquid.

10. A sample analyzer, characterized in that: The sample analyzer comprises the mixing device according to any one of claims 1 to 9.

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