Caliber-adjustable pipetting device for standard curve configuration

Abstract

The utility model discloses a caliber-adjustable pipetting device for configuring a standard curve. The caliber-adjustable pipetting device comprises a pipetting gun body and a dropping pipette turntable, wherein the dropping pipette turntable is rotatably arranged on the liquid outlet side of the pipetting gun body through a turntable shaft; the device is characterized in that a dropping pipette turntable is arranged on a turntable shaft in an elastic lifting manner, a plurality of dropping pipettes with different calibers are arranged on the dropping pipette turntable in a circumferential array manner, the dropping pipette turntable rotates to switch the dropping pipettes with different calibers relative to a liquid outlet of a pipette body, and the dropping pipette turntable ascends and descends to enable the dropping pipettes corresponding to the shaft to be in butt joint with and separated from the liquid outlet. According to the utility model, the dropping pipettes with different calibers are switched through rotation of the dropping pipette turntable, so that the requirement of the dropping calibers is met, and the pipetting operation efficiency of standard curve configuration is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipetting for standard curve configuration, and particularly relates to a pipetting device with adjustable caliber for standard curve configuration. Background Technique

[0002] When using the method of successive dilution to configure the standard curve, a high-precision pipette is required. In order to adapt to the control of the size of the dropped liquid, the existing pipettes need to be equipped with dropper tubes of various calibers. Since each dropper tube and the pipette are independent structures, it is necessary to disassemble and replace the required caliber dropper tube when needed, and the disassembly and assembly efficiency is relatively low, seriously affecting the pipetting operation efficiency of the standard curve configuration. Summary of the Invention

[0003] Object of the Invention: In order to overcome the deficiencies in the prior art, the utility model provides a pipetting device with adjustable caliber for standard curve configuration, which rotates the dropper tube turntable to switch dropper tubes of different calibers, meets the requirements of the dropper caliber, and improves the pipetting operation efficiency of the standard curve configuration.

[0004] Technical Solution: To achieve the above object, the pipetting device with adjustable caliber for standard curve configuration of the utility model includes a pipette body and a dropper tube turntable rotatably arranged on the liquid outlet side of the pipette body through a turntable shaft; the dropper tube turntable is elastically lifted and lowered on the turntable shaft, and a number of dropper tubes with different calibers are circumferentially arranged on the dropper tube turntable. The dropper tube turntable rotates to switch dropper tubes of different calibers relative to the liquid outlet of the pipette body, and the dropper tube turntable rises and falls to dock and separate the corresponding dropper tube from the liquid outlet.

[0005] Further, it includes an elastic support member arranged on the turntable shaft. The bottom end of the turntable shaft has a bottom support plate, and the turntable shaft is movably arranged on the turntable shaft through the elastic support shaft of the elastic support member.

[0006] Further, the liquid outlet is provided with an insertion port with a reduced radial dimension. When the dropper tube is docked with the liquid outlet, the insertion port is inserted into the liquid inlet pipe orifice of the dropper tube.

[0007] Further, a seal member that fills the docking seam by extrusion deformation is arranged between the liquid outlet and the liquid inlet pipe orifice of the dropper tube.

[0008] Further, it includes a turntable mounting seat fixedly arranged relative to the pipette body. A bearing seat is arranged on the turntable mounting seat, and the dropper tube turntable is rotatably mounted on the turntable mounting seat through the cooperation of the turntable shaft and the bearing seat.

[0009] Further, through holes corresponding to the dropping pipettes one by one are formed in the dropping pipette turntable, and positioning screws located on the side surface of the dropping pipette turntable are arranged corresponding to the through holes. The dropping pipettes are inserted into the corresponding through holes and are positioned by radial feeding and pressing of the positioning screws.

[0010] Further, axial baffles are arranged on the dropping pipettes. When the dropping pipettes are inserted into the corresponding through holes, the dropping pipettes are installed in place and blocked by the fitting of the axial baffles and the dropping pipette turntable.

[0011] Beneficial effects: By rotating the dropping pipette turntable of the present utility model to switch dropping pipettes with different diameters, the requirement for the dropping diameter can be met, and the replacement of dropping pipettes with different diameters is relatively rapid and convenient, thereby improving the pipetting operation efficiency for standard curve configuration and being suitable for large-scale popularization and application. Description of the Drawings

[0012] Att Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0013] Att Figure 2 is an exploded schematic diagram of the structures of some components of the present utility model. Specific Embodiments

[0014] The present utility model will be further described below with reference to the drawings.

[0015] As shown in Att Figure 1 and Att Figure 2 shown, a pipetting device with adjustable diameter for standard curve configuration includes a pipetting gun body 1 and a dropping pipette turntable 2 rotatably arranged on the liquid outlet side of the pipetting gun body 1 through a turntable shaft 3; the dropping pipette turntable 2 is elastically lifted and lowered on the turntable shaft 3, and a plurality of dropping pipettes 4 with different diameters are circumferentially and arrayedly arranged on the dropping pipette turntable 2. The dropping pipette turntable 2 rotates to switch different-diameter dropping pipettes 4 relative to the liquid outlet 10 of the pipetting gun body 1, and the dropping pipette turntable 2 is lifted and lowered to dock and separate the corresponding dropping pipettes 4 from the liquid outlet 10. By rotating the dropping pipette turntable 2 of the present utility model to switch different-diameter dropping pipettes 4, the requirement for the dropping diameter can be met, and the replacement of dropping pipettes 4 with different diameters is relatively rapid and convenient, thereby improving the pipetting operation efficiency for standard curve configuration and being suitable for large-scale popularization and application.

[0016] As shown in Att Figure 2 shown, the present utility model includes an elastic support member 5 arranged on the turntable shaft 3. The bottom end of the turntable shaft 3 has a bottom support plate 6, and the turntable shaft 3 is movably arranged on the turntable shaft 3 through the elastic support shaft of the elastic support member 5. The elastic support member 5 is a spring located between the bottom support plate 6 and the dropping pipette turntable 2. By providing an upward pushing force for the dropping pipette turntable 2 through the spring, the corresponding dropping pipette 4 on the dropping pipette turntable 2 can be docked with the liquid outlet 10.

[0017] It should be noted that, as shown in the appendix Figure 2 As shown, the liquid outlet 10 is provided with an insertion interface 10a with a reduced radial dimension. When the drip tube 4 is docked with the liquid outlet 10, the insertion interface 10a is inserted into the liquid inlet pipe orifice of the drip tube 4. The drip tube 4 and the liquid outlet 10 are docked in an insertion manner, which can form a limit in the horizontal direction and prevent the drip tube 4 and the liquid outlet 10 from being misaligned due to the impact of liquid discharge.

[0018] In order to avoid liquid leakage, a seal 12 that fills the docking seam by extrusion deformation is provided between the liquid outlet 10 and the liquid inlet pipe orifice of the drip tube 4. The seal 12 is specifically an O-ring provided on the liquid outlet 10.

[0019] The utility model includes a turntable mounting seat 7 fixedly arranged relative to the pipette body 1. The turntable mounting seat 7 is fixed on the pipette body 1 by screws 13. A bearing seat 8 is arranged on the turntable mounting seat 7. The drip tube turntable 2 is rotatably mounted on the turntable mounting seat 7 through the cooperation of a turntable shaft 3 and the bearing seat 8.

[0020] The drip tube turntable 2 is provided with through mounting positions 20 corresponding one-to-one to the drip tubes 4. Corresponding to the through mounting positions 20, positioning screws 9 are arranged on the side of the drip tube turntable 2. The drip tubes 4 are inserted into the corresponding through mounting positions 20 and are radially fed and pressed for positioning by the positioning screws 9. In order to ensure the accuracy of the installation in place of the drip tubes 4, axial baffles 11 are arranged on the drip tubes 4. When the drip tubes 4 are inserted into the corresponding through mounting positions 20, the installation in place is blocked by the fitting of the axial baffles 11 and the drip tube turntable 2.

[0021] The above are only the preferred embodiments of the utility model. It should be pointed out that: for those of ordinary skill in the art, without departing from the principle of the utility model, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the utility model.

Claims

1. Pipetting device with adjustable orifice for standard curve configuration, comprising a pipette body (1) and a dropper turntable (2) rotatably arranged on the liquid outlet side of the pipette body (1) through a turntable shaft (3); characterized in that: The dropper turntable (2) is elastically lifted and lowered on the turntable shaft (3). A number of droppers (4) with different diameters are circumferentially arranged on the dropper turntable (2). The dropper turntable (2) rotates to switch different-diameter droppers (4) relative to the liquid outlet (10) of the pipette body (1). The lifting and lowering of the dropper turntable (2) make the corresponding dropper (4) dock with and separate from the liquid outlet (10).

2. The pipetting device with adjustable caliber for standard curve configuration according to claim 1, characterized in that: It includes an elastic support member (5) arranged on the turntable shaft (3). The bottom end of the turntable shaft (3) has a bottom support plate (6). The turntable shaft (3) is elastically supported and axially displaced through the elastic support member (5) and arranged on the turntable shaft (3).

3. The pipetting device with adjustable caliber for standard curve configuration according to claim 1, wherein: The liquid outlet (10) is provided with an insertion port (10a) with a reduced radial dimension. When the dropper (4) is docked with the liquid outlet (10), the insertion port (10a) is inserted into the liquid inlet pipe orifice of the dropper (4).

4. The pipetting device with adjustable caliber for standard curve configuration according to claim 1, wherein: A seal (12) that fills the docking seam by squeezing deformation is arranged between the liquid outlet (10) and the liquid inlet pipe orifice of the dropper (4).

5. The pipetting device with adjustable caliber for standard curve configuration according to claim 1, characterized in that: It includes a turntable mounting seat (7) fixedly arranged relative to the pipette body (1). A bearing seat (8) is arranged on the turntable mounting seat (7). The dropper turntable (2) is rotationally mounted on the turntable mounting seat (7) through the cooperation of the turntable shaft (3) and the bearing seat (8).

6. The pipetting device with adjustable caliber for standard curve configuration according to claim 1, characterized in that: Through holes (20) corresponding one-to-one to the droppers (4) are formed in the dropper turntable (2). Positioning screws (9) are arranged on the side of the dropper turntable (2) corresponding to the through holes (20). When the dropper (4) is inserted into the corresponding through hole (20), it is radially fed and pressed for positioning by the positioning screw (9).

7. The pipetting device with adjustable caliber for standard curve configuration according to claim 6, characterized in that: An axial baffle (11) is arranged on the dropper (4). When the dropper (4) is inserted into the corresponding through hole (20), the installation is blocked when the axial baffle (11) fits with the dropper turntable (2).

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