Centrifuge apparatus, tensioning mechanism and testing apparatus

Abstract

The utility model discloses centrifugal equipment, tensioning mechanism and detection equipment, wherein centrifugal equipment includes base, and the rotatable shaft is arranged on the base, and the rotatable shaft is connected through synchronous belt mechanism and is driven motor, and the outer side of synchronous belt mechanism's belt is attached with the tensioning wheel, and the tensioning wheel is rotatable and is arranged at the top of an adjusting block, and at least one strip hole extending along its length direction is arranged on the adjusting block, and the adjusting block is connected through the fastening bolt of strip hole and base, and a boss is arranged on the adjusting block, and the boss has a first slope, and the side of first slope near the tensioning wheel is higher than the opposite side, and the first slope is attached with the second slope of the pressing block above the boss, and the pressing block is movably arranged in the guide block on the base along the vertical direction, and the adjusting bolt is screw -thread connection and is abutted on the top of pressing block on the guide block. The utility model discloses the adjusting bolt along the vertical direction setting, and the horizontal space required by the adjusting bolt and the component thereof is effectively saved.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal equipment, and in particular to centrifugal equipment, tensioning mechanisms and testing equipment. Background Technology

[0002] Centrifugation sampling is an important step in various tests.

[0003] The process typically involves using a centrifuge to rotate materials at high speed, causing them to separate into layers based on their density. The denser liquids sink to the bottom, while the less dense liquids float to the top, thus separating the materials and obtaining the desired pure substance.

[0004] Patent document CN215541821U discloses a centrifuge device.

[0005] In this structure, a synchronous belt mechanism connects the servo motor and the rotating shaft. The tension of the synchronous belt needs to be adjusted after use to ensure stable transmission.

[0006] Authorization notice number CN222687234U discloses a synchronous belt tensioning device. This device requires adjustment of the mounting base plate via adjusting bolts set along the adjustment direction, which results in the entire tensioning device occupying a larger horizontal space. Utility Model Content

[0007] The purpose of this invention is to solve the above-mentioned problems in the prior art and to provide a centrifuge device, a tensioning mechanism, and a testing device.

[0008] The objective of this utility model is achieved through the following technical solution: A centrifuge includes a base on which a rotating shaft extending vertically along its axis is rotatably mounted. The rotating shaft is connected to a motor that drives its rotation via a synchronous belt mechanism. A tensioning pulley is attached to the outer side of the belt of the synchronous belt mechanism. The tensioning pulley is rotatably mounted on the top of an adjusting block. The adjusting block has at least one strip-shaped hole extending along its length. The adjusting block is connected to the base via a fastening bolt passing through the strip-shaped hole. A boss is provided on the top of the adjusting block. The boss has a first inclined surface, with the side of the first inclined surface near the tensioning pulley being higher than the opposite side. The first inclined surface abuts against a second inclined surface of a pressure block above the boss. The pressure block is movably mounted in a guide block on the base. An adjusting bolt extending vertically and abutting against the top of the pressure block is threaded onto the guide block.

[0009] Preferably, the adjusting block is movably disposed in a guide groove recessed on the platform of the base, the length of the guide groove being greater than the length of the adjusting block, and the width of the guide groove being adapted to the width of the adjusting block.

[0010] Preferably, the strip hole is a single hole located between the tensioning wheel and the boss.

[0011] Preferably, the adjustment channel on the guide block for moving the pressure block is I-shaped.

[0012] Preferably, a connecting plate is coaxially provided at the upper end of the rotating shaft, and the edge of the connecting plate is connected to a centrifuge tube insertion sleeve, which has a countersunk hole.

[0013] Preferably, the connecting plate includes a lower plate and an upper cover plate. The edge of the lower plate has a plurality of evenly distributed circumferentially oriented grooves. The side of the centrifuge tube insertion sleeve has a pivot portion embedded in the oriented groove. The upper cover plate is fixed above the lower plate to restrict the shaft portions at both ends of the pivot portion within the oriented groove. The upper cover plate is provided with a notch whose width is adapted to the portion between the shaft portions at both ends of the pivot portion. The length of the notch extending radially along the upper cover plate is greater than the length of the oriented groove extending radially along the lower plate.

[0014] Preferably, the rotating shaft is rotatably mounted on the bearing seat, the sleeve of the centrifuge tube insertion sleeve maintains a distance from the bearing seat when in a vertical state, and a photoelectric sensor for detecting whether there is a centrifuge tube at the centrifuge tube insertion sleeve is provided on the side of the bearing seat.

[0015] Preferably, the base is also provided with a centrifugal quality visual inspection mechanism.

[0016] A tensioning mechanism, including a tensioning wheel, is characterized in that: the tensioning wheel is rotatably mounted on the top of an adjusting block; the adjusting block has at least one strip-shaped hole extending along its length; the top of the adjusting block has a boss with a first inclined surface, the side of the first inclined surface near the tensioning wheel being higher than the opposite side; the first inclined surface abuts against a second inclined surface of a pressure block above the boss; the pressure block is movably mounted in a guide block in a vertical direction; and an adjusting bolt extending vertically abuts against the top of the pressure block on the guide block is threadedly connected to it.

[0017] Testing equipment, including any of the centrifugation devices described above.

[0018] The advantages of this utility model's technical solution are mainly reflected in: The centrifuge device of this utility model adopts a special tensioning mechanism. The tensioning mechanism adopts an inclined plane fit structure, so that the adjusting bolt can be set in the vertical direction, which effectively saves the horizontal space required by the adjusting bolt and the components therein, and meets the needs of use in scenarios where horizontal space is limited.

[0019] This invention positions the adjusting block in a guide groove on the platform, effectively connecting the adjusting block to the platform with only one bolt, simplifying subsequent adjustment operations and improving adjustment efficiency.

[0020] The guide groove of this utility model adopts an I-shaped hole, which can effectively reduce the contact area between the pressure block and the hole wall, thereby facilitating adjustment and operation.

[0021] The connecting disc structure of this utility model is easy to fit with the centrifuge tube plug sleeve, so that it can maintain a predetermined tilt angle when the shaft rotates, and at the same time, it is easy to assemble.

[0022] This invention features a centrifugation quality visual inspection mechanism that can detect the centrifugation effect after centrifugation, thereby ensuring that the centrifugation effect meets the requirements. Attached Figure Description

[0023] Figure 1 This is a partial perspective view of the centrifuge device of this utility model; Figure 2 This is a partial sectional view from the first perspective of the centrifuge device of this utility model; Figure 3 This is a cross-sectional view of the centrifuge device of this utility model from a second perspective; Figure 4 This is a perspective view of the guide block of this utility model; Figure 5 This is a partial perspective view of the centrifuge tube connector sleeve pivotally connected to the lower plate in the centrifuge device of this utility model; Figure 6 This is a partial three-dimensional view of the centrifuge device of this utility model, which integrates a centrifugal quality visual inspection mechanism. Detailed Implementation

[0024] The purpose, advantages, and features of this utility model will be illustrated and explained through the following non-limiting description of preferred embodiments. These embodiments are merely typical examples of applying the technical solutions of this utility model, and all technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of protection claimed by this utility model.

[0025] In the description of the solution, it should be noted that the terms "center," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience and simplification of description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] Example 1 The centrifuge device disclosed in this utility model will now be described in conjunction with the accompanying drawings, as shown in the attached drawings. Figure 1 Appendix Figure 2 As shown, it includes a base 100, which includes a platform 110. A set of support columns 120 located at the top corner of the platform 110 are provided below it. Of course, the base 100 can also be other feasible structures, which will not be described in detail here.

[0027] The base 100 is provided with a rotating shaft 200 whose axis extends vertically. Specifically, the rotating shaft 200 is rotatably connected to a bearing seat 300 on the platform 110 via a bearing 310. The lower end of the rotating shaft 200 is connected to a motor 500 that drives its rotation via a synchronous belt mechanism 400.

[0028] The synchronous belt mechanism 400 is located above the platform 110 and includes a drive pulley 410, a driven pulley 420, and a belt 430 mounted on them. The driven pulley 420 is coaxially connected to the lower part of the rotating shaft 200. The drive pulley 410 is coaxially connected to the motor shaft of the motor 500. The motor 500 is fixed below the platform 110, and its shaft passes through the platform 110 and is connected to the drive pulley 410.

[0029] As attached Figure 1 Appendix Figure 3As shown, a tensioning pulley 440 is attached to the outer side of the belt 430. The tensioning pulley 440 is rotatably mounted on the top of an adjusting block 450. The adjusting block 450 has at least one strip-shaped hole 451 extending along its length. The adjusting block 450 is connected to the base 100 by a fastening bolt 460 passing through the strip-shaped hole 451. A boss 452 is provided on the top of the adjusting block 450. The boss 452 and the tensioning pulley 440 are distributed on the adjusting block 450. At both ends of 50, the boss 452 has a first inclined surface 453, with the side of the first inclined surface 453 near the tensioning wheel 440 being higher than the opposite side. The first inclined surface 453 is in contact with the second inclined surface 471 of the pressure block 470 above the boss 452. The pressure block 470 is movably disposed in a guide block 480 on the base 100 in the vertical direction. An adjusting bolt 490 is threadedly connected to the guide block 480, abutting against the top of the pressure block 470 and extending in the vertical direction. The tensioning wheel 440, adjusting block 450, pressure block 470, guide block 480, and adjusting bolt 490 constitute a tensioning mechanism.

[0030] During adjustment, loosen the fastening bolt 460. After the fastening bolt 460 is loosened, turn the adjusting bolt 490 downward to drive the pressure block 470 to move downward. This causes the second inclined surface 471 to cooperate with the first inclined surface 453 to drive the adjusting block 450 to move towards the belt 430, which in turn drives the tensioning wheel 440 to move towards the belt 430 to tension the belt 430. After adjustment, tighten the fastening bolt 460.

[0031] In one embodiment, the adjusting block 450 may be provided with a plurality of parallel strip holes 451, so that the adjusting block 450 is connected to the platform 110 by a plurality of fastening bolts 460.

[0032] As attached Figure 1 Appendix Figure 3 As shown, in order to reduce the number of fastening bolts 460 to facilitate adjustment, the adjusting block 450 is movably disposed in the guide groove 111 recessed on the table surface of the platform 110. The length of the guide groove 111 is greater than the length of the adjusting block 450, and the width of the guide groove 111 is adapted to the width of the adjusting block 450. Thus, only one strip hole 451 is required, and it is located between the tensioning wheel 440 and the boss 452.

[0033] As attached Figure 4As shown, the guide block 480 is generally a T-shaped block. Two horizontal protrusions 481 of the guide block 480 each form a connecting hole 482. The guide block 480 is fixed to the platform 110 by bolts passing through the connecting holes 482. Simultaneously, the guide block 480 has a recessed notch 483 on its side facing the tension wheel 440, into which the protrusion of the adjusting block 450 can be embedded. The upper end of the notch 483 communicates with an adjusting channel 484 provided on the guide block 480. The pressure block 470 is a trapezoidal block that moves up and down within the adjusting channel 484. To reduce friction during movement, the adjusting channel 484 is I-shaped. The adjusting bolt is threaded into a screw hole in the guide block, and the screw hole communicates with the adjusting channel. As attached Figure 1 Appendix Figure 2 Appendix Figure 5 As shown, a connecting plate 600 is coaxially disposed at the upper end of the rotating shaft 200. The edge of the connecting plate 600 is connected to a centrifuge tube insertion sleeve 700, which has a countersunk hole. Furthermore, for ease of assembly, the connecting plate 600 includes a lower plate 610 and an upper cover plate 620, which are connected by bolts. The upper cover plate 620 is also bolted to the upper end of the rotating shaft 200.

[0034] The lower plate 610 has multiple evenly distributed circumferentially distributed limiting grooves 611 formed on its edge. Each limiting groove 611 includes a relatively short opening 612 and a relatively long groove 613. The opening 612 extends from the top to the bottom of the lower plate 610, and the long groove 613 extends downward from the top of the lower plate 610 to a predetermined depth, which is less than the thickness of the lower plate 610. Correspondingly, the centrifuge tube insertion sleeve 700 includes a sleeve body 710 and a pivot portion 720 located on the side and upper end of the sleeve body 710. The pivot portion 720 is embedded in the limiting groove 611, and when the sleeve body 710 is in a vertical state, it is located outside the lower plate 610.

[0035] The upper cover plate 620 is fixed above the lower plate 610. Simultaneously, the upper cover plate 620 covers the shaft portions 721 at both ends of the pivot portion 720, thereby confining the shaft portions 721 within the limiting groove 611. The upper cover plate 620 also has a notch 621 whose width is adapted to the portion between the shaft portions 721 at both ends of the pivot portion 720. The radial extension length of the notch 621 along the upper cover plate 620 is greater than the radial extension length of the limiting groove 611 along the lower plate 610. Furthermore, a block 622 is disposed within the notch 621. The top surface of the block 622 is lower than the top surface of the upper cover plate 620, and the block 622 is located inside the limiting groove 611.

[0036] During centrifugation, under the action of centrifugal force, the centrifuge tube insertion sleeve 700 rotates around its axis 721, thus presenting an overall inclined state. At this time, if a centrifuge tube A is provided inside the centrifuge tube insertion sleeve 700, the tube wall of centrifuge tube A abuts against the apex corner of the notch 621, thereby keeping centrifuge tube A in a predetermined inclined state.

[0037] As attached Figure 1 As shown, in order to determine whether a centrifuge tube A is inserted into the centrifuge tube insertion sleeve, the sleeve body 710 of the centrifuge tube insertion sleeve 700 maintains a distance from the bearing seat 300 when in a vertical state. A detection photoelectric sensor 800 is provided on the side of the bearing seat 300 for detecting whether a centrifuge tube A is present at the centrifuge tube insertion sleeve 700. When any centrifuge tube insertion sleeve 700 is directly opposite the detection photoelectric sensor 800, the detection photoelectric sensor 800 can detect the centrifuge tube A inserted into the centrifuge tube insertion sleeve 700. By rotating the centrifuge tube insertion sleeve 700 one by one to the detection photoelectric sensor 800, multiple positions of centrifuge tube A can be detected by one detection photoelectric sensor 800. The detection photoelectric sensor can be, for example, a known proximity sensor.

[0038] As attached Figure 6 As shown, a centrifugal quality visual inspection mechanism 900 is also provided on the base 100. The centrifugal quality visual inspection mechanism 900 includes a backlight plate 910 and an image acquisition component 920 located on opposite sides of the drive wheel 410. During inspection, a sample from the centrifuge tube after centrifugation can be sucked up through a transparent pipette tip, and the pipette tip is moved between the backlight plate 910 and the image acquisition component 920. The image acquisition component 920 captures a photograph of the pipette tip and analyzes it to determine whether the separation effect meets the requirements. The specific image analysis method is a known technology and is not an innovation of this utility model, so it will not be described in detail here. The specific structure of the image acquisition component 920 is a known technology, which usually includes a camera, lens, light source, and other components facing the backlight plate 910, so it will not be described in detail here.

[0039] Example 2 This embodiment discloses a detection device, such as an immunofluorescence detection device, which includes the centrifugation device as described above.

[0040] This utility model has many other embodiments. All technical solutions formed by equivalent transformation or equivalent transformation fall within the protection scope of this utility model.

Claims

1. A centrifuge, comprising a base, wherein a rotating shaft extending vertically along its axis is rotatably mounted on the base, the rotating shaft being connected to a motor driving its rotation via a synchronous belt mechanism, characterized in that: A tensioning pulley is attached to the outer side of the belt of the synchronous belt mechanism. The tensioning pulley is rotatably mounted on the top of an adjusting block. The adjusting block has at least one strip-shaped hole extending along its length. The adjusting block is connected to the base through a fastening bolt passing through the strip-shaped hole. A boss is provided on the top of the adjusting block. The boss has a first inclined surface. The side of the first inclined surface near the tensioning pulley is higher than the opposite side. The first inclined surface is in contact with a second inclined surface of a pressure block above the boss. The pressure block is movably mounted in a guide block on the base. An adjusting bolt that abuts against the top of the pressure block and extends in the vertical direction is threaded onto the guide block.

2. The centrifuge according to claim 1, characterized in that: The adjusting block is movably disposed in a guide groove recessed on the platform of the base. The length of the guide groove is greater than the length of the adjusting block, and the width of the guide groove is adapted to the width of the adjusting block.

3. The centrifuge according to claim 1, characterized in that: The strip-shaped hole is a single hole located between the tensioning wheel and the boss.

4. The centrifuge according to claim 1, characterized in that: The adjustment channel on the guide block for moving the pressure block is I-shaped.

5. The centrifuge according to claim 1, characterized in that: A connecting plate is coaxially provided at the upper end of the rotating shaft, and the edge of the connecting plate is connected to a centrifuge tube insertion sleeve, which has a countersunk hole.

6. The centrifuge according to claim 5, characterized in that: The connecting plate includes a lower plate and an upper cover plate. The edge of the lower plate has a plurality of evenly distributed circumferentially oriented grooves. The side of the centrifuge tube insertion sleeve has a pivot portion embedded in the oriented groove. The upper cover plate is fixed above the lower plate to restrict the shaft portions at both ends of the pivot portion within the oriented groove. The upper cover plate is provided with a notch whose width is adapted to the portion between the shaft portions at both ends of the pivot portion. The length of the notch extending radially along the upper cover plate is greater than the length of the oriented groove extending radially along the lower plate.

7. The centrifuge according to claim 5, characterized in that: The rotating shaft is rotatably mounted on the bearing seat. When the centrifuge tube insertion sleeve is in a vertical state, there is a gap between the sleeve and the bearing seat. The side of the bearing seat is provided with a photoelectric sensor for detecting whether there is a centrifuge tube at the centrifuge tube insertion sleeve.

8. The centrifuge according to any one of claims 1-7, characterized in that: The base is also equipped with a centrifugal quality visual inspection mechanism.

9. A tensioning mechanism, including a tensioning wheel, characterized in that: The tensioning wheel is rotatably mounted on top of an adjusting block. The adjusting block has at least one strip-shaped hole extending along its length. A boss is provided on the top of the adjusting block. The boss has a first inclined surface, with the side of the first inclined surface near the tensioning wheel being higher than the opposite side. The first inclined surface is in contact with a second inclined surface of a pressure block above the boss. The pressure block is movably mounted in a guide block. An adjusting bolt that abuts against the top of the pressure block and extends along the vertical direction is threaded onto the guide block.

10. A testing device, characterized in that: Includes the centrifuge device as described in any one of claims 1-8.

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