Eight-channel automatic pipette

Abstract

The utility model discloses an automatic eight-channel pipette, which relates to the technical field of pipettes and comprises a base, a support fixedly mounted on the base, the support extending upwards, an annular plate arranged on one side of the support, a turntable rotatably mounted in the annular plate and a vertical moving mechanism arranged on the support. The vertical moving mechanism is connected with the annular plate and used for driving the annular plate to move up and down. Eight liquid storage devices are fixedly installed on the rotating disc, the liquid storage devices penetrate through the rotating disc, pistons are arranged in the liquid storage devices in a sliding mode, piston rods are fixedly installed at the upper ends of the pistons, cross rods are fixedly installed at the upper ends of the piston rods, and clamping grooves are formed in the end portions of the cross rods; a top seat is rotatably mounted at the output end of the first electric push rod, a connecting mechanism is arranged on the top seat, the connecting mechanism can move into the clamping groove, and the connecting mechanism is used for connecting the top seat and the cross rod together.

Description

Technical Field

[0001] The utility model relates to the field of pipettes X, in particular to an 8-channel automatic pipette. Background Art

[0002] A pipette is a precision instrument widely used in laboratories such as biology, chemistry, medicine, and molecular biology for accurately measuring and transferring a certain volume of liquid. It mainly consists of a tip (or pipette tip, liquid suction nozzle), a pipette body, and a volume adjustment knob, etc.

[0003] An existing automatic pipette with the publication number CN110215944B specifically discloses including a driving assembly, a piston assembly, and a piston sleeve tip assembly, and also includes a position sensor and a controller. When the automatic pipette is in the liquid adding state, the tip is above the sampling area, the position sensor is used to send out a first detection signal and transmit it to the controller, and the controller is used to generate a first operation control signal according to the received first detection signal and transmit it to the driving assembly, and the driving assembly is used to run forward in response to the first operation control signal; when the automatic pipette is in the liquid discharging state, the tip is above the liquid discharging area, the position sensor is used to send out a second detection signal and transmit it to the controller, and the controller is used to generate a second operation control signal according to the received second detection signal and transmit it to the driving assembly, and the driving assembly is used to run backward in response to the second operation control signal.

[0004] The existing automatic pipettes cannot perform multi-channel pipetting operations during use. A single-channel pipette can only process one sample or well each time. Therefore, when dealing with a large number of samples, it will take longer time. This may lead to an extended experimental cycle, especially more obvious in high-throughput experiments or large-scale screening. For this reason, we propose an 8-channel automatic pipette. Summary of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides an 8-channel automatic pipette, which solves the problems raised in the above background art.

[0006] To achieve the above purposes, the utility model is realized through the following technical solutions: an 8-channel automatic pipette, including: a base, a bracket is fixedly installed on the base, the bracket extends upward, a circular plate is arranged on one side of the bracket, a turntable is rotatably installed inside the circular plate, a vertical moving mechanism is arranged on the bracket, and the vertical moving mechanism is connected to the circular plate and used to drive the circular plate to move up and down.

[0007] Eight liquid storage devices are fixedly installed on the turntable. The liquid storage devices penetrate through the turntable. Pistons are slidably arranged in the liquid storage devices. The upper ends of the pistons are fixedly installed with piston rods. The upper ends of the piston rods are fixedly installed with cross bars. Card slots are formed at the ends of the cross bars. A first electric push rod is fixedly installed on the turntable. A top seat is rotatably installed at the output end of the first electric push rod. A connecting mechanism is arranged on the top seat. The connecting mechanism can move into the card slot. The connecting mechanism is used to connect the top seat and the cross bar together.

[0008] As a further technical solution of the utility model, the lower end of the liquid storage device is funnel-shaped.

[0009] As a further technical solution of the utility model, the connecting mechanism includes a plurality of side blocks distributed in a circumferential array. The side blocks are fixedly installed on the top seat. Connecting shafts are rotatably installed on the side blocks. Blocks are fixedly installed at the lower ends of the connecting shafts. Anti-slip patterns are arranged on the surfaces of the blocks. The blocks can move into the card slots.

[0010] As a further technical solution of the utility model, corrosion-resistant coatings are applied to the inner walls of the liquid storage devices and the surfaces of the pistons.

[0011] As a further technical solution of the utility model, the vertical moving mechanism includes two second electric push rods arranged at intervals. The second electric push rods are fixedly installed on the bracket and the output ends are fixedly connected to the annular plate.

[0012] As a further technical solution of the utility model, a gear ring is sleeved outside the liquid storage device and the gear ring is fixedly connected to the liquid storage device. A motor is fixedly installed on the annular plate. A driving wheel meshing with the gear ring is fixedly installed at the output shaft end of the motor.

[0013] The utility model provides an 8-channel automatic pipette. Compared with the prior art, the following beneficial effects are achieved:

[0014] 1. For the designed 8-channel automatic pipette, multi-channel pipetting work can be carried out by arranging a plurality of liquid storage devices, and multiple samples or holes can be processed simultaneously, significantly improving the operation efficiency of the experiment. By rotating the block into the card slot, the cross bar and the top seat can be connected together and moved synchronously, so that different numbers of liquid storage devices can be put into use. The device can flexibly adjust the number of operation channels according to the specific requirements of the experiment without frequently replacing pipettes of different specifications. This flexibility greatly improves the convenience and operability of the experiment.

[0015] 2. An 8-channel automatic pipette of this design drives a liquid storage device to insert into different depths of the liquid through a second electric push rod, drives the liquid storage device to move to different positions of the liquid through a motor to aspirate liquid, and can aspirate different positions and different depths of the liquid by adjusting the height and position of the liquid storage device. The pipette of this application can meet diverse experimental requirements. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of an 8-channel automatic pipette;

[0017] Figure 2 It is a schematic working diagram of an 8-channel automatic pipette;

[0018] Figure 3 It is a schematic enlarged view of a part of the structure of an 8-channel automatic pipette Figure 1 ;

[0019] Figure 4 It is a schematic enlarged view of a part of the structure of an 8-channel automatic pipette Figure 2 .

[0020] In the figure: machine base 1, bracket 2, annular plate 3, turntable 4, liquid storage device 5, piston 6, piston rod 7, cross bar 8, card slot 9, first electric push rod 10, top seat 11, side block 12, connecting shaft 13, clamping block 14, second electric push rod 15, gear ring 16, motor 17, driving wheel 18. Detailed Embodiment

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1-4, the present utility model provides a technical solution for an 8-channel automatic pipette: An 8-channel automatic pipette includes: a base 1, a bracket 2 is fixedly installed on the base 1, the bracket 2 extends upward, a circular plate 3 is arranged on one side of the bracket 2, a turntable 4 is rotatably installed inside the circular plate 3, a vertical moving mechanism is arranged on the bracket 2, and the vertical moving mechanism is connected to the circular plate 3 and is used to drive the circular plate 3 to move up and down. Eight liquid storage devices 5 are fixedly installed on the turntable 4, the liquid storage devices 5 penetrate the turntable 4, pistons 6 are slidably arranged in the liquid storage devices 5, piston rods 7 are fixedly installed at the upper ends of the pistons 6, cross bars 8 are fixedly installed at the upper ends of the piston rods 7, a card slot 9 is opened at the end of the cross bar 8, a first electric push rod 10 is fixedly installed on the turntable 4, a top seat 11 is rotatably installed at the output end of the first electric push rod 10, a connecting mechanism is arranged on the top seat 11, the connecting mechanism can move into the card slot 9, and the connecting mechanism is used to connect the top seat 11 and the cross bar 8 together. The lower end of the liquid storage device 5 is funnel-shaped. The connecting mechanism includes a plurality of side blocks 12 distributed in a circumferential array, the side blocks 12 are fixedly installed on the top seat 11, connecting shafts 13 are rotatably installed on the side blocks 12, clamping blocks 14 are fixedly installed at the lower ends of the connecting shafts 13, anti-slip lines are arranged on the surface of the clamping blocks 14, and the clamping blocks 14 can move into the card slot 9. By setting a plurality of liquid storage devices, multi-channel pipetting work can be carried out, multiple samples or holes can be processed simultaneously, and the operation efficiency of the experiment is significantly improved. By rotating the clamping block into the card slot, the cross bar can be connected to the top seat and moved synchronously, so that different numbers of liquid storage devices can be put into use, and the liquid is sucked into the liquid storage device by driving the piston to move upward in the liquid storage device. The device can flexibly adjust the number of operation channels according to the specific requirements of the experiment, without frequently replacing pipettes of different specifications.

[0023] Among them, a corrosion-resistant coating is applied to the inner wall of the liquid storage device 5 and the surface of the piston 6. The vertical moving mechanism includes two second electric push rods 15 arranged at intervals, the second electric push rods 15 are fixedly installed on the bracket 2 and the output ends are fixedly connected to the circular plate 3. A gear ring 16 is sleeved outside the liquid storage device 5 and the gear ring 16 is fixedly connected to the liquid storage device 5. A motor 17 is fixedly installed on the circular plate 3, and a driving wheel 18 meshing with the gear ring 16 is fixedly installed at the output shaft end of the motor 17. During the liquid taking process, by adjusting the height and position of the liquid storage device 5, liquids at different positions and different depths can be sucked. The second electric push rod 15 drives the circular plate 3 to move downward and makes the lower end of the liquid storage device 5 move into the liquid. By driving a plurality of liquid storage devices 5 and the turntable 4 to rotate synchronously, the liquid storage device 5 is driven to move to different positions of the liquid for liquid taking.

[0024] The working principle of the present utility model is as follows: By providing multiple liquid reservoirs 5, multi-channel pipetting work can be carried out, enabling the simultaneous processing of multiple samples or wells, significantly improving the operation efficiency of the experiment. The second electric push rod 15 drives the annular plate 3 to move downward, causing the lower end of the liquid reservoir 5 to move into the liquid. According to the experimental requirements, the clamping block 14 is rotated to the card slot 9, and the cross bar 8 can be connected to the top seat 11 and move synchronously, so as to put different numbers of liquid reservoirs 5 into use. The first electric push rod 10 drives the top seat 11 to move upward, and the top seat 11, the cross bar 8 and the piston rod 7 move synchronously, thereby driving the piston 6 to move upward in the liquid reservoir 5 and sucking the liquid into the liquid reservoir 5. The device can flexibly adjust the number of operation channels according to the specific requirements of the experiment without frequently replacing pipettes of different specifications. This flexibility greatly improves the convenience and operability of the experiment.

[0025] During the liquid sampling process, by adjusting the height and position of the liquid reservoir 5, the liquid at different positions and different depths can be sucked. The second electric push rod 15 drives the annular plate 3 to move downward, causing the lower end of the liquid reservoir 5 to move into the liquid, and the second electric push rod 15 can drive the liquid reservoir 5 to insert into the liquid at different depths. The motor 17 drives the driving wheel 18 to rotate, and the driving wheel 18 drives the gear ring 16 to rotate, thereby driving multiple liquid reservoirs 5 and the turntable 4 to rotate synchronously, so as to drive the liquid reservoir 5 to move to different positions of the liquid for liquid sampling. Different experiments may require sampling from different positions or different depths on the liquid surface. This function of the pipette enables it to adapt to diverse experimental requirements. Whether it is sampling from the bottom of a viscous liquid or from a specific layer in a stratified liquid, it can be easily completed.

[0026] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present 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 present utility model. The structures, devices and operation methods not specifically described and explained in the present utility model, unless otherwise specified and limited, are implemented according to the conventional means in the art.

Claims

1. An 8-channel automatic pipette, characterized in that: include: A machine base (1), wherein a bracket (2) is fixedly mounted on the machine base (1), the bracket (2) is extended upward, an annular plate (3) is arranged on one side of the bracket (2), a turntable (4) is rotatably mounted in the annular plate (3), and a vertical moving mechanism is arranged on the bracket (2), the vertical moving mechanism is connected to the annular plate (3) and is used to drive the annular plate (3) to move up and down; Eight liquid reservoirs (5) are fixedly mounted on the turntable (4), the liquid reservoirs (5) penetrate the turntable (4), pistons (6) are slidably mounted in the liquid reservoirs (5), piston rods (7) are fixedly mounted on the upper ends of the pistons (6), cross bars (8) are fixedly mounted on the upper ends of the piston rods (7), and a slot (9) is provided at the end of the cross bar (8), a first electric push rod (10) is fixedly mounted on the turntable (4), a top seat (11) is rotatably mounted on the output end of the first electric push rod (10), a connecting mechanism is provided on the top seat (11), the connecting mechanism can be moved into the slot (9), and the connecting mechanism is used to connect the top seat (11) and the cross bar (8) together.

2. An 8-channel automatic pipette according to claim 1, characterized in that: The lower end of the liquid storage container (5) is configured to be funnel-shaped.

3. An 8-channel automatic pipette according to claim 2, characterized in that: The connecting mechanism comprises a plurality of side blocks (12) distributed in a circumferential array, the side blocks (12) being fixedly mounted on the top seat (11), the side blocks (12) being rotatably mounted with connecting shafts (13), the lower ends of the connecting shafts (13) being fixedly mounted with clamping blocks (14), the surfaces of the clamping blocks (14) being provided with anti-slip grooves, and the clamping blocks (14) being movable into the clamping slots (9).

4. An 8-channel automatic pipette according to claim 3, characterized in that: The inner wall of the liquid reservoir (5) and the surface of the piston (6) are coated with a corrosion-resistant coating.

5. An 8-channel automatic pipette according to claim 4, characterized in that: The vertical movement mechanism comprises two second electric push rods (15) arranged at intervals. The second electric push rods (15) are fixedly mounted on the bracket (2) and the output ends are fixedly connected to the annular plate (3).

6. An 8-channel automatic pipette according to claim 5, characterized in that: The outer shell of the liquid reservoir (5) is provided with a gear ring (16) and the gear ring (16) is fixedly connected to the liquid reservoir (5). A motor (17) is fixedly mounted on the annular plate (3), and a driving wheel (18) meshing with the gear ring (16) is fixedly mounted on the output shaft end of the motor (17).

Images