Centrifuge tube fixing device

Abstract

The utility model belongs to the technical field of food detection, and provides a centrifuge tube fixing device which comprises a fixing box, a clamping unit and a supporting plate used for supporting the clamping unit, a plurality of linearly arranged round holes are formed in the middle of the upper surface of the fixing box, the clamping unit is matched with the round holes, and the supporting plate is used for supporting the clamping unit. The clamping unit comprises a plurality of linearly arranged clamping parts, a control piece for controlling the clamping parts to clamp the centrifugal tube, and a driving piece for driving the clamping parts to move. The centrifugal tube clamping device is high in adaptability and can adapt to centrifugal tubes of different sizes by adjusting the clamping force, and the universality of the device is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of food detection, and particularly relates to a centrifuge tube fixing device. Background Art

[0002] In food testing, sample preparation is a key step to ensure accurate and reliable test results. Its core goal is to extract as many target substances as possible from the sample so that the test sample can fully represent the true condition of the sample being tested, thereby providing a strong guarantee for the objectivity and accuracy of the test results.

[0003] In the process of sample extraction, it is often necessary to oscillate various specifications of centrifuge tubes containing samples and extracts. In this process, the oscillation speed may reach a high level, and the oscillation time may last from a few minutes to several hours. Long-term oscillation undoubtedly places extremely high demands on the fixing device of the centrifuge tube.

[0004] However, the spring-type device currently used has exposed many problems in practical applications, as follows:

[0005] 1. The size of the centrifuge tube often does not match the spring of the oscillator, which brings great trouble to the operation. Some centrifuge tubes are stuck too tightly. During the oscillation process, the sample mark on the centrifuge tube will be severely worn, which greatly reduces its traceability;

[0006] 2. Some centrifuge tubes are too loose, and they will involuntarily slide to the bottom or into the water bath during oscillation, causing sample spillage, which not only affects the accuracy of the test, but may also cause cross contamination.

[0007] These problems have brought great inconvenience and challenges to food testing, seriously affecting the smooth progress of testing and the improvement of testing quality.

[0008] Therefore, it is necessary to design a centrifuge tube fixing device to solve the above technical problems. Summary of the invention

[0009] In order to solve the above technical problems, the utility model proposes a centrifuge tube fixing device, comprising a fixing box, a clamping unit and a support plate for supporting the clamping unit, wherein a plurality of linearly arranged circular holes are opened in the middle of the upper surface of the fixing box, the clamping unit cooperates with the circular holes, and the clamping unit comprises a plurality of linearly arranged clamping parts, a control part for controlling the clamping part to clamp the centrifuge tube, and a driving part for driving the clamping part to move;

[0010] The clamping parts each include two symmetrically arranged arc plates, two symmetrical sliding rods are arranged on the outer side of the arc plates, a clamping piece is arranged on the inner side of the arc plates, the sliding rods are slidably connected to the fixed box, a plurality of support plates are provided, and the support plates are linearly arranged on two opposite surfaces of the fixed box, and the circular hole cooperates with the clamping parts.

[0011] Preferably, the control component includes an air intake branch pipe fixedly connected to the clamping component, the air intake branch pipes on the same side are fixedly connected through the air intake main pipe, the air intake main pipes are fixedly connected through the air intake main pipe, and one end of the air intake main pipe is fixedly connected to a driving device. The fixing box, the clamping unit and the support plate can achieve stable clamping of centrifuge tubes of different sizes. This design improves the safety and stability of the sample during oscillation, effectively avoids the risk of sample spillage and cross contamination, protects the sample identification, and improves the traceability of the sample.

[0012] Preferably, the driving member includes a moving rod connected to the outer side of the arc plate, the moving rod passes through the fixed box and extends to the outer side of the fixed box, the moving rod is slidably connected to the fixed box, the moving rod is located between two symmetrical sliding rods, and the extended ends of the moving rods on the same side are fixedly connected by a connecting rod.

[0013] Preferably, the driving member also includes two linearly arranged fixing grooves fixed on the fixing box, the fixing grooves and the connecting rod are perpendicular to each other, the notches of the fixing grooves are rotatably connected with left and right spiral lead screws, both ends of the left and right spiral lead screws are rotatably connected with sliders, the sliders are slidably connected to the notches of the fixing grooves, and the sliders are fixedly connected to the ends of the connecting rods close to the fixing box.

[0014] Preferably, the middle parts of the left and right spiral lead screws are coaxially fixedly connected with bevel gear 1, one side of the bevel gear 1 is meshed with bevel gear 2, one side of the bevel gear 2 is provided with a synchronous motor, one side of the synchronous motor is fixedly connected to the fixing box, and the output shaft of the synchronous motor is coaxially fixedly connected to the bevel gear 2. The arrangement of the left and right spiral lead screws and the slider makes the movement of the driving member more stable and improves the stability of the device. At the same time, the design of the fixing groove makes the maintenance and replacement of the driving member easier, reducing the maintenance cost after long-term use.

[0015] Preferably, the clamping member is a vacuum suction cup, the vacuum suction cup is arranged in an arc shape, and the driving device is a vacuum pump. The vacuum suction cup is used as the clamping member, which can gently and effectively clamp the centrifuge tube. This design reduces the wear of the sample identification and ensures the integrity and traceability of the sample.

[0016] Preferably, the clamping member is an airbag, the airbag is arranged in an arc shape, and the driving device is an air pump. A softer clamping method is provided. This design effectively reduces damage and spillage during sample oscillation, and improves the accuracy and reliability of detection.

[0017] Preferably, the main air intake duct is located on the upper surface of the support plate.

[0018] Preferably, the centrifuge tube is located in the circular hole.

[0019] Compared with the prior art, the utility model has the following advantages and effects:

[0020] 1. Under the prior art, the size of the centrifuge tube and the spring of the oscillator often do not match, which brings great trouble to the operation. Some centrifuge tubes are stuck too tightly. During the oscillation process, the sample mark on the centrifuge tube will be seriously worn, resulting in a significant reduction in its traceability. The utility model uses two synchronous motors to work synchronously to drive the two left and right spiral lead screws to rotate synchronously. When the two left and right spiral lead screws rotate synchronously, they drive the slider to slide in the notch of the fixed groove, so that the two connecting rods are close to or away from each other. When the two connecting rods are close to or away from each other, they can drive the clamping parts to be close to or away from each other, so that the clamping parts are in contact with the outer wall of the centrifuge tube. It can be suitable for centrifuge tubes of different sizes. When the clamping piece is a vacuum suction cup, the vacuum suction cup is arranged in an arc shape, and the driving device is a vacuum pump, the vacuum pump drives the vacuum suction cup to clamp the outer wall of the centrifuge tube. Compared with the prior art, it can effectively solve the technical problem that the centrifuge tube is clamped too tightly, the sample mark on the centrifuge tube is seriously worn, and its traceability is greatly reduced; when the clamping piece is an airbag, the airbag is arranged in an arc shape, and the driving device is an air pump, the air pump works to inflate the airbag to clamp the outer wall of the centrifuge tube. Compared with the prior art, the effect of the airbag can further effectively solve the technical problem that the centrifuge tube is clamped too tightly, the sample mark on the centrifuge tube is seriously worn, and its traceability is greatly reduced.

[0021] 2. Under the prior art, some centrifuge tubes are too loose, and the centrifuge tubes will involuntarily slide into the bottom or water bath during oscillation, causing sample spillage, which not only affects the accuracy of the test, but may also cause cross contamination. The utility model uses two synchronous motors to work synchronously to drive the two left and right spiral lead screws to rotate synchronously. When the two left and right spiral lead screws rotate synchronously, they drive the slider to slide in the notch of the fixed groove, so that the two connecting rods are close to or away from each other. When the two connecting rods are close to or away from each other, they can drive the clamping parts to be close to or away from each other, so that the outer wall of the centrifuge tube of the clamping part is in contact, and it can be suitable for centrifuge tubes of different sizes. When the clamping part is a vacuum suction cup, the vacuum suction cup When it is set to an arc shape and the driving device is a vacuum pump, the vacuum pump drives the vacuum suction cup to clamp the outer wall of the centrifuge tube. Compared with the prior art, it can effectively solve the problem that the centrifuge tube is too loose, and the centrifuge tube will involuntarily slide into the bottom or water bath during oscillation, thereby causing sample spillage, affecting the accuracy of detection, and causing cross-contamination. When the clamping piece is an airbag, the airbag is set to an arc shape, and the driving device is an air pump, the air pump works to inflate the airbag to clamp the outer wall of the centrifuge tube. Compared with the prior art, the effect of the airbag can further effectively solve the problem that the centrifuge tube is too loose, and the centrifuge tube will involuntarily slide into the bottom or water bath during oscillation, thereby causing sample spillage, affecting the accuracy of detection, and causing cross-contamination.

[0022] In summary, the utility model has strong adaptability and can adapt to centrifuge tubes of different sizes by adjusting the clamping force, thereby improving the versatility of the device;

[0023] The utility model can fix and stabilize the centrifuge tube, and the clamping piece fits tightly with the outer wall of the centrifuge tube, thereby ensuring the stability of the centrifuge tube during the oscillation process and avoiding sample spillage and cross contamination;

[0024] The utility model can protect the sample identification of the centrifuge tube, and compared with the traditional spring-type device, it can more effectively protect the sample identification on the centrifuge tube and improve the traceability of the sample;

[0025] The utility model is easy to operate and can be easily adjusted through the linkage design of the synchronous motor and the left and right spiral ladder screws. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the utility model;

[0027] Figure 2 for Figure 1 A local enlarged schematic diagram;

[0028] Figure 3 for Figure 1 B is a partial enlarged schematic diagram;

[0029] Figure 4 for Figure 1 A local enlarged schematic diagram of C;

[0030] Figure 5 It is a structural schematic diagram of the arc plate and the slide rod of the utility model;

[0031] Figure 6 It is a schematic diagram of the overall structure of the second embodiment of the present utility model.

[0032] Reference numerals:

[0033] 1. Fixing box; 2. Support plate; 3. Round hole;

[0034] 200, curved plate; 201, sliding rod; 202, vacuum suction cup; 203, air bag;

[0035] 210, air intake branch pipe; 211, air intake main pipe; 212, air intake main pipe;

[0036] 220, moving rod; 221, connecting rod; 222, fixing groove; 223, left-right spiral lead screw; 224 slider; 225, bevel gear one; 226, bevel gear two. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the present invention, the present invention is now further described in conjunction with specific implementation methods.

[0038] Embodiment 1:

[0039] like Figure 1 to Figure 4 As shown, the utility model provides a centrifuge tube fixing device, comprising a fixing box 1, a clamping unit and a support plate 2 for supporting the clamping unit, a plurality of linearly arranged circular holes 3 are opened in the middle of the upper surface of the fixing box 1, the clamping unit cooperates with the circular holes 3, and the clamping unit comprises a plurality of linearly arranged clamping parts, a control part for controlling the clamping part to clamp the centrifuge tube, and a driving part for driving the clamping part to move;

[0040] The clamping parts include two symmetrically arranged arc plates 200, two symmetrical sliding rods 201 are arranged on the outer side of the arc plates 200, and a clamping piece is arranged on the inner side of the arc plates 200. The sliding rods 201 are slidably connected to the fixed box 1. A plurality of support plates 2 are arranged linearly on two opposite surfaces of the fixed box 1, and the circular hole 3 cooperates with the clamping part.

[0041] Furthermore, the control part includes an air intake branch pipe 210 fixedly connected to the clamping part, and the air intake branch pipes 210 located on the same side are fixedly connected through the air intake main pipe 211, and the air intake main pipes 211 are fixedly connected through the air intake main pipe 212, and one end of the air intake main pipe 212 is fixedly connected with a driving device. The fixing box 1, the clamping unit and the support plate 2 can achieve stable clamping of centrifuge tubes of different sizes. This design improves the safety and stability of the sample during oscillation, effectively avoids the risk of sample spillage and cross contamination, and at the same time protects the sample identification and improves the traceability of the sample.

[0042] Furthermore, the driving member includes a moving rod 220 connected to the outer side of the arc plate 200, the moving rod 220 penetrates the fixed box 1 and extends to the outer side of the fixed box 1, the moving rod 220 is slidingly connected to the fixed box 1, the moving rod 220 is located between two symmetrical sliding rods 201, and the extended ends of the moving rod 220 located on the same side are fixedly connected by a connecting rod 221.

[0043] Furthermore, the driving member also includes two linearly arranged fixed grooves 222 fixed on the fixed box 1, the fixed grooves 222 and the connecting rod 221 are perpendicular to each other, the grooves of the fixed grooves 222 are rotatably connected with left and right spiral lead screws 223, both ends of the left and right spiral lead screws 223 are rotatably connected with sliders 224, the sliders 224 are slidably connected to the grooves of the fixed grooves 222, and the sliders 224 are fixedly connected to the ends of the connecting rod 221 close to the fixed box 1.

[0044] Furthermore, the middle of the left and right spiral lead screws 223 are coaxially fixedly connected with a bevel gear 1 225, one side of the bevel gear 1 225 is meshed with a bevel gear 2 226, one side of the bevel gear 2 226 is provided with a synchronous motor, one side of the synchronous motor is fixedly connected to the fixing box 1, and the output shaft of the synchronous motor is coaxially fixedly connected to the bevel gear 2 226. The arrangement of the left and right spiral lead screws 223 and the slider 224 makes the movement of the driving member more stable and improves the stability of the device. At the same time, the design of the fixing slot 222 makes the maintenance and replacement of the driving member easier, reducing the maintenance cost after long-term use.

[0045] Furthermore, the clamping member is a vacuum suction cup 202, which is arranged in an arc shape, and the driving device is a vacuum pump. The vacuum suction cup 202 is used as a clamping member, and the centrifuge tube can be clamped gently and effectively. This design reduces the wear of the sample identification, while ensuring the integrity and traceability of the sample.

[0046] Furthermore, the main air intake pipe 211 is located on the upper surface of the support plate 2 .

[0047] Furthermore, the centrifuge tube is located in the circular hole 3 .

[0048] When using the utility model, the centrifuge tube is placed in the circular hole 3 on the upper surface of the fixing box 1. The support plate 2 is located on two opposite sides of the fixing box 1 to provide support for the clamping unit;

[0049] Adjustment of the clamping unit, the clamping unit comprises linearly arranged clamping parts 200, each clamping part comprises two symmetrically arranged arc plates 200, and a vacuum suction cup 202 is arranged inside the arc plate 200 as a clamping member;

[0050] The operation of the driving member, the two synchronous motors work synchronously, the synchronous motor drives the bevel gear 226, and then drives the bevel gear 1 225 and the left and right spiral lead screws 223 to rotate synchronously, so that the slider 224 slides in the fixed groove 222, thereby driving the clamping parts 200 to move closer or farther from each other, adapting to centrifuge tubes of different diameters;

[0051] The activation of the vacuum pump activates the vacuum suction cup 202 through the driving device, that is, the vacuum pump. The vacuum pump works to generate negative pressure, so that the vacuum suction cup 202 clamps the outer wall of the centrifuge tube.

[0052] Stable oscillation: When the vacuum chuck 202 is tightly attached to the outer wall of the centrifuge tube, the oscillator is started to oscillate the sample. Due to the stable clamping of the vacuum chuck, the safety and stability of the centrifuge tube during the oscillation process are ensured, and sample spillage and cross contamination are avoided.

[0053] Embodiment 2:

[0054] For the second embodiment of the present utility model, Figure 6 Note that description of parts that are not different from those in Embodiment 1 will be omitted and will be given the same reference numerals.

[0055] like Figure 5 As shown, the centrifuge tube fixing device of the utility model has a clamping member which is an airbag 203, the airbag 203 is arranged in an arc shape, and the driving device is an air pump. A softer clamping method is provided. This design effectively reduces damage and spillage during sample oscillation, and improves the accuracy and reliability of detection.

[0056] The airbag 203 is activated by a driving device, i.e., an air pump. The air pump works to inflate the airbag, so that the airbag 203 clamps the outer wall of the centrifuge tube.

[0057] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. A centrifuge tube fixing device, characterized in that: It comprises a fixing box (1), a clamping unit and a support plate (2) for supporting the clamping unit, wherein a plurality of linearly arranged circular holes (3) are provided in the middle of the upper surface of the fixing box (1), the clamping unit cooperates with the circular holes (3), and the clamping unit comprises a plurality of linearly arranged clamping parts, a control part for controlling the clamping parts to clamp the centrifuge tubes, and a driving part for driving the clamping parts to move; The clamping portion comprises two symmetrically arranged arc plates (200), two symmetrical sliding rods (201) are arranged on the outer side of the arc plates (200), a clamping piece is arranged on the inner side of the arc plates (200), the sliding rods (201) are slidably connected to the fixing box (1), a plurality of support plates (2) are provided, the support plates (2) are linearly arranged on two opposite surfaces of the fixing box (1), and the circular hole (3) cooperates with the clamping portion; The control component comprises an air intake branch pipe (210) fixedly connected to the clamping component, the air intake branch pipes (210) located on the same side are all fixedly connected via an air intake main pipe (211), the air intake main pipes (211) are fixedly connected via an air intake main pipe (212), and one end of the air intake main pipe (212) is fixedly connected to a driving device; The driving member comprises a moving rod (220) connected to the outer side of the arc-shaped plate (200), the moving rod (220) passes through the fixed box (1) and extends to the outer side of the fixed box (1), the moving rod (220) is slidably connected to the fixed box (1), the moving rod (220) is located between two symmetrical sliding rods (201), and the extended ends of the moving rods (220) located on the same side are fixedly connected via a connecting rod (221).

2. A centrifuge tube fixing device according to claim 1, characterized in that: The driving member further comprises two linearly arranged fixing grooves (222) fixed on the fixing box (1); the fixing grooves (222) and the connecting rod (221) are perpendicular to each other; left and right spiral lead screws (223) are rotatably connected in the notches of the fixing grooves (222); both ends of the left and right spiral lead screws (223) are rotatably connected to sliders (224); the sliders (224) are slidably connected to the notches of the fixing grooves (222); and the sliders (224) are fixedly connected to the ends of the connecting rod (221) on a side close to the fixing box (1).

3. A centrifuge tube fixing device according to claim 2, characterized in that: The middle parts of the left and right spiral lead screws (223) are coaxially fixedly connected with bevel gear one (225), one side of the bevel gear one (225) is meshed with bevel gear two (226), one side of the bevel gear two (226) is provided with a synchronous motor, one side of the synchronous motor is fixedly connected to the fixed box (1), and the output shaft of the synchronous motor is coaxially fixedly connected to the bevel gear two (226).

4. A centrifuge tube fixing device according to claim 3, characterized in that: The clamping member is a vacuum suction cup (202), the vacuum suction cup (202) is arranged in an arc shape, and the driving device is a vacuum pump.

5. A centrifuge tube fixing device according to claim 3, characterized in that: The clamping member is an air bag (203), the air bag (203) is arranged in an arc shape, and the driving device is an air pump.

6. A centrifuge tube fixing device according to claim 3, characterized in that: The main air intake pipe (211) is located on the upper surface of the support plate (2).

7. A centrifuge tube fixing device according to claim 1, characterized in that: The centrifuge tube is located in the circular hole (3).

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