Multi-channel pipettor

Abstract

The utility model discloses a multichannel pipettor which comprises a power source, a belt transmission mechanism, a lead screw nut mechanism, a guide column mechanism and a liquid suction needle mechanism. The power source is arranged on the fixing plate, and the power output end of the power source is connected with the belt transmission mechanism; the belt transmission mechanism is connected with the power source and the lead screw nut mechanism; the lead screw nut mechanism comprises a lead screw and a nut which are matched with each other, the nut is connected with the belt transmission mechanism, and the end, away from the nut, of the lead screw is connected with the liquid suction needle mechanism; the liquid suction needle mechanism comprises a plunger pressing plate, a plunger fixing block and plunger liquid suction units arranged in an array mode. The utility model has the beneficial effects that the belt transmission mechanism drives the screw rod mechanism to move so as to drive the plunger liquid suction unit to move, the functions of liquid suction and liquid discharge are realized, the structure is simple and stable, the corresponding use requirements can be met, and a good working state is ensured.

Description

Technical Field

[0001] This utility model relates to the field of pipette technology, and in particular to a multichannel pipette. Background Technology

[0002] Currently, most multichannel pipettes on the market have complex drive mechanisms and high overall costs, which cannot adequately meet usage needs. Utility Model Content

[0003] The purpose of this invention is to meet the corresponding usage requirements and provide a multi-channel pipette.

[0004] The technical solution of this utility model is as follows: This utility model provides a multi-channel pipette, including: a power source, a belt drive mechanism, a lead screw and nut mechanism, a guide post mechanism, and a suction needle mechanism.

[0005] The power source is mounted on the fixed plate, and the power output end of the power source is connected to the belt drive mechanism;

[0006] The belt drive mechanism connects the power source and the lead screw and nut mechanism;

[0007] The lead screw and nut mechanism includes a matching lead screw and a nut, the nut being connected to the belt drive mechanism, and the end of the lead screw away from the nut being connected to the suction needle mechanism;

[0008] The liquid aspiration needle mechanism includes a plunger pressure plate, a plunger fixing block, and an array of plunger liquid aspiration units. The plunger pressure plate is fixed to the lead screw, the plunger fixing block is fixed to the plunger pressure plate, and the plunger liquid aspiration units are disposed at the plunger fixing block.

[0009] The guide post mechanism includes a plurality of guide posts and linear bearings correspondingly disposed on the guide posts. The guide posts are fixed to the fixed plate, and the linear bearings are fixed to the plunger pressure plate.

[0010] Furthermore, the power source includes a stepper motor.

[0011] Furthermore, the belt drive mechanism includes a driving pulley, a drive belt, and a driven pulley. The drive belt connects the driving pulley and the driven pulley. The driving pulley is located at the output end of the power source, and the driven pulley is connected to the nut.

[0012] Furthermore, the lead screw is fixed to the plunger pressure plate via a lead screw fixing seat.

[0013] Furthermore, the solution also includes a housing assembly connected to the fixing plate.

[0014] The advantages of this utility model by adopting the above solution are as follows: the belt drive mechanism drives the screw mechanism to move, which in turn drives the plunger liquid suction unit to move, thereby realizing the functions of liquid suction and liquid discharge. The structure is simple and stable, which can meet the corresponding usage requirements and ensure good working condition. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a multichannel pipette according to an embodiment of the present invention.

[0016] Figure 2 This is a schematic diagram of the internal structure of a multichannel pipette according to an embodiment of the present invention.

[0017] Figure 3 This is a cross-sectional schematic diagram of a multichannel pipette according to an embodiment of the present invention. Detailed Implementation

[0018] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] Please refer to the following: Figures 1 to 3 In this embodiment, the present invention provides a multi-channel pipette, including: a power source 1, a belt drive mechanism 2, a lead screw and nut mechanism 3, a guide post mechanism 5, and a suction needle mechanism 4.

[0020] Specifically, the power source 1 includes a stepper motor, which is mounted on the fixed plate 11. The power output end of the power source 1 is connected to the belt drive mechanism 2. The power source 1 provides power to the multichannel pipette.

[0021] The belt drive mechanism 2 connects the power source 1 and the screw and nut mechanism 3, thereby realizing the transmission of power. Specifically, the belt drive mechanism 2 includes a driving pulley, a transmission belt, and a driven pulley. The transmission belt connects the driving pulley and the driven pulley. The driving pulley is located at the output end of the power source 1, and the driven pulley is connected to the nut 31.

[0022] The lead screw and nut mechanism 3 includes a lead screw 32 and a nut 31 that cooperate with each other. The nut 31 is connected to the driven wheel of the belt drive mechanism 2. The end of the lead screw 32 away from the nut 31 is connected to the suction needle mechanism 4 through the lead screw fixing seat 33.

[0023] The liquid aspiration needle mechanism 4 includes a plunger pressure plate 41, a plunger fixing block 42, and 96 plunger liquid aspiration units 43 arranged in an array. The plunger pressure plate 41 is fixed to the lead screw, and the plunger fixing block 42 is fixed to the plunger pressure plate 41. The plunger liquid aspiration units 43 are disposed at the plunger fixing block 42. The plunger pressure plate 41 of the liquid aspiration needle mechanism 4 moves under the drive of the lead screw and nut mechanism 3, realizing the liquid aspiration and dispensing functions of the plunger liquid aspiration units 43.

[0024] The guide post mechanism 5 includes a plurality of guide posts and linear bearings correspondingly disposed on the guide posts. The guide posts are fixed to the fixed plate 11, and the linear bearings are fixed to the plunger pressure plate 41. The guide post mechanism 5 can ensure that the aspiration needle mechanism 4 operates smoothly during the aspiration and dissipation of liquid.

[0025] Furthermore, the solution also includes a housing assembly connected to the fixing plate 11.

[0026] Please continue to refer to the following: Figures 1 to 3 In this scheme, the stepper motor rotates to drive the drive wheel to rotate, and then drives the driven wheel through the belt to transmit power to the nut 31. The nut 31 rotates, which in turn drives the plunger pressure plate 41 and the plunger mounting block 42 to move through the lead screw 32, thereby driving the plunger suction unit 43 to suction and discharge liquid, realizing the function of liquid transfer.

[0027] In summary, the beneficial effects of this solution are as follows: the belt drive mechanism drives the screw mechanism to move, which in turn drives the plunger liquid suction unit to move, realizing the functions of liquid suction and discharge. The structure is simple and stable, which can meet the corresponding usage requirements and ensure good working condition.

[0028] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multichannel pipette, characterized in that, include: Power source, belt drive mechanism, screw and nut mechanism, guide post mechanism, and suction needle mechanism; The power source is mounted on the fixed plate, and the power output end of the power source is connected to the belt drive mechanism; The belt drive mechanism connects the power source and the lead screw and nut mechanism; The lead screw and nut mechanism includes a matching lead screw and a nut, the nut being connected to the belt drive mechanism, and the end of the lead screw away from the nut being connected to the suction needle mechanism; The liquid aspiration needle mechanism includes a plunger pressure plate, a plunger fixing block, and an array of plunger liquid aspiration units. The plunger pressure plate is fixed to the lead screw, the plunger fixing block is fixed to the plunger pressure plate, and the plunger liquid aspiration units are disposed at the plunger fixing block. The guide post mechanism includes a plurality of guide posts and linear bearings correspondingly disposed on the guide posts. The guide posts are fixed to the fixed plate, and the linear bearings are fixed to the plunger pressure plate.

2. The multichannel pipette according to claim 1, characterized in that, The power source includes a stepper motor.

3. The multichannel pipette according to claim 1, characterized in that, The belt drive mechanism includes a driving pulley, a drive belt, and a driven pulley. The drive belt connects the driving pulley and the driven pulley. The driving pulley is located at the output end of the power source, and the driven pulley is connected to the nut.

4. The multichannel pipette according to claim 1, characterized in that, The lead screw is fixed to the plunger pressure plate via a lead screw fixing seat.

5. The multichannel pipette according to any one of claims 1 to 4, characterized in that, It also includes a housing assembly, which is connected to the mounting plate.

Images