Blood centrifugal device

Abstract

The utility model relates to the technical field of blood centrifugation, in particular to a blood centrifugation device which comprises a centrifugation frame, a centrifugation main machine and a machine cover which are used in cooperation are arranged outside the centrifugation frame, and a butt joint rod used for assembling the centrifugation frame is arranged in a cavity in one side of the centrifugation main machine. A centrifugal motor used in cooperation with the butt joint rod is arranged at the bottom end of the butt joint rod, and a plurality of containing grooves used for containing centrifugal tubes are formed in the centrifugal frame. The clamping mechanism comprises an assembly block arranged at the top of the placing groove and a limiting unit arranged on the assembly block, and is used for limiting and clamping the centrifugal tube placed in the placing groove; and the positioning mechanism is arranged in the center of the centrifugal frame and used for conducting displacement fixing on the limiting units in the containing grooves. According to the centrifugal tube clamping and limiting device, centrifugal tubes of different sizes can be clamped and limited, the problem that centrifugal operation cannot be carried out on the centrifugal tubes of different sizes at the same time due to the fact that the inner diameters of a plurality of containing grooves are the same is solved, and the practicability of the centrifugal tube clamping and limiting device can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of blood centrifugation, in particular to a blood centrifugation device. Background Art

[0002] A blood centrifuge is a device used to separate blood into its different components by centrifugation. These devices use centrifugal force to separate blood into its components, such as blood cells and plasma, and are commonly used in clinical laboratories and medical diagnostics.

[0003] Currently, multiple placement slots for placing centrifuge tubes on a centrifuge rack are limited by specific clamping parts. Therefore, if multiple placement slots have the same inner diameter, it is impossible to simultaneously centrifuge multiple centrifuge tubes of different sizes.

[0004] The above content is only used to assist in understanding the technical solution of the present invention and does not mean that the above content is the closest prior art. Utility Model Content

[0005] The purpose of this utility model is to solve the above-mentioned deficiencies and provide a blood centrifuge.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: a blood centrifuge device, comprising a centrifuge frame, a centrifuge main unit and a cover for use with the centrifuge frame are disposed on the outside of the centrifuge frame, a docking rod for assembling the centrifuge frame is disposed in a cavity on one side of the centrifuge main unit, a centrifuge motor is disposed at the bottom end of the docking rod, and a plurality of placement slots for placing centrifuge tubes are provided on the centrifuge frame;

[0007] The clamping mechanism includes an assembly block arranged on the top of the placement tank and a limiting unit arranged on the assembly block, which is used to limit and clamp the centrifuge tube placed in the placement tank;

[0008] The positioning mechanism is arranged at the center of the centrifugal frame and is used to displace and fix the limiting unit in the placement groove.

[0009] Furthermore, a sliding cavity is provided on the assembly block.

[0010] Furthermore, the limit unit includes two side fixed blocks symmetrically arranged in the sliding cavity opened on the assembly block, and a limit block movably arranged between the fixed blocks on both sides. A support block is arranged on one end of the limit block, and an adjusting screw is movably arranged at one end of the support block and passes through the end of the limit block. The other end of the support block is provided with a trapezoidal wedge block with an inclined surface.

[0011] Furthermore, the two side support parts of the limit block are provided with guide rods for sliding guidance, and the guide rods are correspondingly fixed in the side fixed blocks, and two sections of springs are provided outside the guide rods and under the separation of the support part of the limit block.

[0012] Furthermore, an adjusting block is provided at the top end of the adjusting screw, and a slot for the adjusting block to pass through is provided on the limiting block.

[0013] Furthermore, the positioning mechanism includes a support ring arranged in the center of the centrifugal frame, several trapezoidal wedge blocks arranged on the outer circumference of the support ring, the inner circumference of the support ring is provided with three centrally symmetrical support plates, and the support plates are provided with a support rod in the center of the centrifugal frame, the outer surface of one of the support rods is provided with an external thread, and the outer surfaces of the remaining two support rods are provided with smooth surfaces.

[0014] Furthermore, the outer end of the trapezoidal wedge block 2 is provided with a second inclined surface that fits in contact with the first inclined surface.

[0015] Furthermore, a docking groove for fitting and plugging the docking rod is provided at the central lower end of the centrifugal frame, and a fixing screw for fixing the centrifugal frame on the docking rod is provided at the top of the inner groove of the docking groove.

[0016] Compared with the prior art, the present invention has the following beneficial effects: the present invention provides a clamping mechanism and a positioning mechanism, and the coordinated use of the above structures can synchronously determine the accommodation specifications of several placement slots for placing centrifuge tubes on the centrifuge rack, thereby realizing the size determination of the placement slots in a single centrifugation experiment and meeting the clamping and fixation of centrifuge tubes of multiple sizes; and also through the adjustment screw in the limit unit, the relative distance between the limit block and the support block can be fine-tuned, thereby realizing the function of limiting single centrifuge tubes of different sizes, solving the problem that multiple placement slots with the same inner diameter cannot simultaneously perform centrifugal operations on multiple centrifuge tubes of different sizes, and helping to improve the practicality of the present implementation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 A three-dimensional structural diagram of a centrifugal rack according to an embodiment of the present invention from one perspective;

[0019] Figure 2 This is a cross-sectional perspective structural diagram of a centrifugal rack according to an embodiment of the present invention;

[0020] Figure 3 for Figure 2 A in the middle shows the enlarged structure diagram;

[0021] Figure 4 for Figure 2 The structure diagram at B is enlarged;

[0022] Figure 5 A three-dimensional structural diagram of a limiting unit according to an embodiment of the present invention from one perspective;

[0023] Figure 6 for Figure 5 The structure diagram at C in the middle is enlarged;

[0024] Figure 7 A three-dimensional structural diagram of a centrifugal main unit used in conjunction with an embodiment of the present invention from one perspective;

[0025] Figure 8 This is a three-dimensional structural diagram of a centrifugal main unit and a machine cover used in conjunction with an embodiment of the present invention from one perspective.

[0026] In the figure: 1. Centrifugal frame; 2. Centrifugal main unit; 3. Machine cover; 4. Docking rod; 5. Placement groove; 6. Clamping mechanism; 61. Assembly block; 621. Side fixing block; 622. Limit block; 6221. Slot hole; 623. Support block; 624. Adjusting screw; 6241. Adjusting block; 625. Trapezoidal wedge block 1; 6251. Inclined surface 1; 626. Guide rod; 627. Spring; 7. Positioning mechanism; 71. Support ring; 72. Trapezoidal wedge block 2; 721. Inclined surface 2; 73. Support plate; 74. Support rod; 8. Docking groove; 81. Fixing screw. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. In the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0029] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting 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 such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or schemes in which A and B are satisfied at the same time. In addition, "multiple" refers to more than two. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually 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 invention.

[0030] like Figure 1-8 As shown, the utility model provides a blood centrifuge device, comprising a centrifuge frame 1, a centrifuge main unit 2 and a cover 3 for use with the centrifuge frame 1 being provided on the outside of the centrifuge frame 1, a docking rod 4 for assembling the centrifuge frame 1 being provided in a cavity on one side of the centrifuge main unit 2, a centrifuge motor being provided at the bottom end of the docking rod 4, and a plurality of placement slots 5 for placing centrifuge tubes being provided on the centrifuge frame 1;

[0031] The clamping mechanism 6 includes an assembly block 61 provided on the top of the placement tank 5 and a limiting unit provided on the assembly block 61, which is used to limit and clamp the centrifuge tube placed in the placement tank 5;

[0032] A positioning mechanism 7, disposed at the center of the centrifuge rack 1, is used to displace and secure the limiting unit within the placement slot 5. This design, through the assembly block 61 assembled within the assembly slot machined at the top of the placement slot 5 and the bolted positioning mechanism 7 at the center of the centrifuge rack 1, can simultaneously determine the capacity specifications of the multiple placement slots 5 for centrifuge tubes provided on the centrifuge rack 1, achieving the desired placement slot size during a single centrifugation experiment, thereby meeting the requirements for clamping and securing centrifuge tubes of multiple sizes.

[0033] It should be noted that the number of placement slots 5 opened by turning on the centrifuge frame 1 is even and distributed symmetrically around the center. During the centrifugation operation, centrifuge tubes need to be placed in the symmetrical placement slots 5 to ensure that the centrifugal force generated during the centrifugation process can act evenly on the blood sample in the centrifuge tube, thereby achieving an effective centrifugal separation effect.

[0034] In one embodiment, a sliding cavity is provided on the assembly block 61. This design provides a moving space for the limiting unit and realizes the horizontal guiding function of the limiting unit on the assembly block 61 by turning the sliding cavity on the assembly block 61.

[0035] In one embodiment, the limiting unit includes two side fixed blocks 621 symmetrically arranged in a sliding cavity opened on the assembly block 61, and a limiting block 622 movably arranged between the two side fixed blocks 621. A support block 623 is provided on one end of the limiting block 622, and a trapezoidal wedge block 625 with a slope 6251 is provided on the other end of the support block 623. Such a design includes, by means including but not limited to welding, side fixing blocks 621 fixed to the two opposite end faces of the sliding cavity opened by the assembly block 61, and a limit block 622 and a support block 623 slidably connected to the bottom surface of the sliding cavity, as well as a trapezoidal wedge block 625 with a slope 6251 integrally formed at the outer end of the support block 623. When the surface of the slope 6251 is squeezed by external force, the combined structure of the limit block 622 and the support block 623 will be driven to move toward the inside of the placement groove 5 under the guidance of the sliding cavity, thereby realizing the change of the internal size of the placement groove 5, and further realizing the clamping and determination of centrifuge tubes of different sizes by the limit block 622.

[0036] It should be noted that the auxiliary clamping block is integrally formed on the other arc surface of the inner wall of the placement groove 5 opposite to the limiting block 622 and has a symmetrical structural design with the limiting block 622.

[0037] Preferably, one end of the support block 623 is movably provided with an adjustment screw 624 that passes through the end of the limit block 622. With this design, through the adjustment screw 624 that is rotatably connected to one end of the support block 623 and a section of internal thread machined at the center of the limit block 622 to match the adjustment screw 624, the relative distance between the limit block 622 and the support block 623 can be adjusted under the rotation of the adjustment screw 624 and the position limitation of the side fixing blocks 621 on both sides of the limit block 622, further realizing the position limitation of individual centrifuge tubes of different sizes in a single centrifugation experiment.

[0038] In one embodiment, guide rods 626 for sliding guidance are provided on both side supports of the limit block 622, and the guide rods 626 are correspondingly fixed in the side fixing block 621. Two sections of springs 627 are provided on the outside of the guide rods 626 and separated by the support portion of the limit block 622. This design, through the through cavities machined on the two side supports of the limit block 622 for sliding guidance with the guide rods 626, can, on the one hand, limit the movement of the structure combined with the limit block 622 and the support block 623, and on the other hand, limit the horizontal movement of the limit block 622 in response to the rotational driving force from the adjustment screw 624. In addition, the springs 627 welded on both sides of the through cavity on the support portion and sleeved on the outside of the guide rods 626 provide a buffering effect during the movement stage in cooperation with the guide rods 626 horizontally welded in the end groove of the side fixing block 621.

[0039] In one embodiment, an adjustment block 6241 is provided at the top of the adjustment screw 624, and a slot 6221 is provided on the limit block 622 for the passage of the adjustment block 6241. This design allows the relative distance between the limit block 622 and the support block 623 to be adjusted by rotating the adjustment block 6241, which is integrally formed on the adjustment screw 624, using a Phillips screwdriver. Furthermore, the slot 6221, which is machined into the limit block 622, allows the limit block 622 to be moved without being restricted by the adjustment block 6241.

[0040] It should be noted that the inner diameter of the slot 6221 is larger than the outer diameter of the adjustment block 6241 .

[0041] In one embodiment, the positioning mechanism 7 includes a support ring 71 arranged at the center of the centrifuge frame 1, and several trapezoidal wedge blocks 72 arranged on the outer circumference of the support ring 71. The inner circumference of the support ring 71 is provided with three centrally symmetrical support plates 73. The support plates 73 are provided with support rods 74 in the center of the centrifuge frame 1. The outer surface of one of the support rods 74 is provided with an external thread, and the outer surfaces of the remaining two support rods 74 are provided with smooth surfaces. With this design, the support ring 71 moves vertically in the center of the centrifuge frame 1, and several trapezoidal wedge blocks 2 72 welded on the outside of the support ring 71, through the vertical movement of the support ring 71, drive the several trapezoidal wedge blocks 2 72 welded on its outer circumference to move downward, so that the trapezoidal wedge block 1 625 in contact with the end face of the trapezoidal wedge block 2 72 moves under the guidance of the sliding cavity of the assembly block 61, which can achieve the effect of adjusting the size of the placement groove 5; there are also three centrally symmetrical support plates 73 welded on the inner circumference of the support ring 71, and support rods 74 correspondingly connected to the support plates 73. The support rods 74 with external threads processed by rotational turning can drive the support ring 71 to move vertically under the guidance of the remaining two support rods 74 with smooth surfaces, providing a driving force for the positioning mechanism 7 to move vertically in the center of the centrifuge frame 1.

[0042] It should be noted that the number of the second trapezoidal wedge blocks 72 is the same as the number of the placement slots 5 and they are also distributed in a centrally symmetrical manner.

[0043] It should be noted that a movable cavity for the support plate 73 to move up and down is formed on the outside of the support rod 74 and at the center end of the centrifugal frame 1 by turning.

[0044] In one embodiment, the outer end of the second trapezoidal wedge block 72 is provided with a second inclined surface 721 that engages with the first inclined surface 6251. With this design, when the second inclined surface 721 and the end surface of the first inclined surface 6251 engage and squeeze each other, the thrust generated by the second inclined surface 721 integrally formed on the outer end of the second trapezoidal wedge block 72 drives the first trapezoidal wedge block 625 and the support block 623 fixed to the first trapezoidal wedge block 625 to move within the sliding cavity of the assembly block 61.

[0045] In one embodiment, the centrifugal frame 1 is provided with a docking groove 8 at the central lower end thereof for receiving and inserting the docking rod 4. A fixing screw 81 is provided at the top of the inner groove of the docking groove 8 for securing the centrifugal frame 1 to the docking rod 4. This design allows the centrifugal frame 1 to be quickly assembled and attached to the docking rod 4 by machining the docking groove 8 at the central lower end thereof, so that its inner groove size matches the outer size of the docking rod 4. Furthermore, the fixing screw 81 welded to the top of the inner groove of the docking groove 8 ensures a stable connection of the centrifugal frame 1 to the docking rod 4.

[0046] It should be noted that an internal threaded groove that matches the fixing screw 81 is opened on the top of the docking rod 4 by turning.

[0047] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced within the present invention.

Claims

1. A blood centrifuge device, comprising a centrifuge frame (1), a centrifuge main unit (2) and a cover (3) for use with the centrifuge frame (1) being provided on the outside of the centrifuge main unit (2), a docking rod (4) for assembling the centrifuge frame (1) being provided in a cavity on one side of the centrifuge main unit (2), a centrifuge motor being provided at the bottom end of the docking rod (4), and characterized in that: The centrifuge rack (1) is provided with a plurality of placement slots (5) for placing centrifuge tubes; A clamping mechanism (6) comprises an assembly block (61) arranged on the top of the placement groove (5) and a limiting unit arranged on the assembly block (61), and is used for limiting and clamping the centrifuge tube placed in the placement groove (5); A positioning mechanism (7) is provided at the center of the centrifugal frame (1) and is used to displace and fix the limiting unit in the placement groove (5).

2. A blood centrifuge device according to claim 1, characterized in that: The assembly block (61) is provided with a sliding cavity.

3. A blood centrifuge device according to claim 2, characterized in that: The limiting unit comprises two side fixing blocks (621) symmetrically arranged in a sliding cavity opened on the assembly block (61), and a limiting block (622) movably arranged between the two side fixing blocks (621); a supporting block (623) is arranged on one end of the limiting block (622); an adjusting screw (624) passing through the end of the limiting block (622) is movably arranged on one end of the supporting block (623); and a trapezoidal wedge block (625) having an inclined surface (6251) is arranged on the other end of the supporting block (623).

4. A blood centrifuge device according to claim 3, characterized in that: The two side support parts of the limit block (622) are provided with guide rods (626) for sliding guidance, and the guide rods (626) are correspondingly fixed in the side fixed blocks (621), and two sections of springs (627) are provided outside the guide rods (626) and under the separation of the support part of the limit block (622).

5. A blood centrifuge device according to claim 3, characterized in that: An adjusting block (6241) is provided at the top end of the adjusting screw (624), and a slot (6221) for the adjusting block (6241) to pass through is provided on the limiting block (622).

6. A blood centrifuge device according to claim 3, characterized in that: The positioning mechanism (7) comprises a support ring (71) arranged at the center of the centrifugal frame (1), a plurality of trapezoidal wedge blocks (72) arranged on the outer peripheral surface of the support ring (71), three centrally symmetrical support plates (73) are arranged on the inner peripheral surface of the support ring (71), and a support rod (74) is arranged on the support plate (73) at the center of the centrifugal frame (1), the outer surface of one of the support rods (74) is provided with an external thread, and the outer surfaces of the remaining two support rods (74) are provided with smooth surfaces.

7. A blood centrifuge according to claim 6, characterized in that: The outer end of the trapezoidal wedge block 2 (72) is provided with a second inclined surface (721) that is in contact with the first inclined surface (6251).

8. The blood centrifuge device according to claim 1, characterized in that: The central lower end of the centrifugal frame (1) is provided with a docking groove (8) for fitting and plugging into the docking rod (4), and the top end of the inner groove of the docking groove (8) is provided with a fixing screw (81) for fixing the centrifugal frame (1) on the docking rod (4).

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