Automatic quantitative gradient sample adding type multichannel pipettor piston assembly

A technology for a piston assembly and a pipette, which is applied in the field of multi-channel pipettes, can solve the problem that multi-channel pipettes cannot perform gradient addition, and achieves the effect of avoiding human error and omitting cumbersome operations.

Inactive Publication Date: 2018-06-22
XUZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the existing multi-channel pipette cannot perform gradient sample addition, the present invention provides an automatic quantitative gradient pi

Method used

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  • Automatic quantitative gradient sample adding type multichannel pipettor piston assembly
  • Automatic quantitative gradient sample adding type multichannel pipettor piston assembly

Examples

Experimental program
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Embodiment 1

[0016] like figure 1 As shown, a 5-channel pipette includes 1 control assembly 1, 1 piston assembly 2, 5 sleeves 3, 5 suction heads 4, and the control assembly 1 includes 1 PLC controller 101, 1 step Into the motor 102, a gear set, a rack 104, and a T-shaped connecting rod 105. The gear set includes 1 driving gear and 1 driven gear 103, the T-shaped connecting rod 105 includes 1 vertical bar and 1 horizontal bar, the PLC controller 101 is connected with the stepping motor 102, and the rotor bearing of the stepping motor 102 is fixed There is a driving gear, the driving gear meshes with the driven gear 103, the driven gear 103 meshes with the rack 104, the rack 104 is installed on the upper end of the vertical rod of the T-shaped connecting rod 105, and the horizontal rod of the T-shaped connecting rod 105 and the piston assembly 2 connected to the upper end.

[0017] like figure 2 As shown, a piston group includes a piston barrel 201, a piston 202, a piston rod 203 and a s...

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Abstract

The invention provides an automatic quantitative gradient sample adding type multichannel pipettor piston assembly. An existing multichannel pipettor piston assembly is replaced with the automatic quantitative gradient sample adding type multichannel pipettor piston assembly, and a suction head can be used for sucking/discharging a liquid sample with a gradient dosage. The automatic quantitative gradient sample adding type multichannel pipettor piston assembly comprises a plurality of piston groups with the same specification, wherein each piston group comprises a piston, a piston rod, a piston cylinder and a spring. The cross section of each piston rod is divided into upper and lower sections and each spring sleeves the corresponding piston rod; two ends of the each spring are fixed on the piston rods at the upper and lower sections respectively. A limiting block is arranged on an inner wall of each piston cylinder and each limiting block is located between each piston and the corresponding spring. The piston cylinders of the plurality of piston groups are arrayed in parallel to form a piston cylinder array; the distance between the limiting block in each piston cylinder and the corresponding piston in the piston cylinder array is gradually increased.

Description

technical field [0001] The invention relates to the field of multichannel pipettes, in particular to a piston assembly of an automatic quantitative gradient pipette. Background technique [0002] When performing biochemical analysis tests or experiments, the pipette can easily help the experimenter to quantitatively draw and add liquid samples. When it is necessary to add samples in batches, arrange the objects to be added on the test tube rack or tray, and use the multi-channel pipette to quickly complete the batch addition. If there are many sampling objects, arrange the sampling objects in a rectangular shape on the test tube rack or tray, and use the multi-channel pipette to pipette multiple batches to complete the sampling work. However, the existing multichannel pipettes can only add equal doses of samples to multiple sampling objects when adding samples. However, each sampling object can only be sampled separately, which is cumbersome, heavy workload, and low work e...

Claims

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Application Information

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IPC IPC(8): B01L3/02
CPCB01L3/0234B01L2200/028
Inventor 宋聚明周明
Owner XUZHOU NORMAL UNIVERSITY
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