Device for assisting pipette to conveniently transfer liquid
A pipette, a convenient technology, applied in the field of pipettes, can solve the problems of unsafe pipetting, visual errors, instability, etc., and achieve the effects of high operational safety, simple process operation, and simple design
Inactive Publication Date: 2012-06-13
UNIV OF SHANGHAI FOR SCI & TECH
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Problems solved by technology
[0008] The present invention is to solve the unsafe and unstable pipetting of the existing ear-absorbing ball with the pipette, the visual error caused by two-handed operation, the expensive price of imported pipettes, the poor precision of domestic pipettes, and the failure of pipettes. The technical problem that cannot be widely replaced, but to provide a device that assists the pipette to transfer liquid conveniently and safely, and realizes the function of the suction ear ball
Method used
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Embodiment Construction
[0024] The present invention will be further described below in conjunction with the accompanying drawings and implementation methods.
[0025] Such as figure 1 As shown, the overall structure of the present invention consists of a piston handle 1, a spring 2, an intake check valve 3, an exhaust check valve 4, a piston 5, a piston connecting rod 6, a piston connecting rod fixing sleeve 7, and a piston cavity 8 , connecting pipe 9, shell sleeve 10, clamp connecting rod 11, connecting rod control handle 12, three-claw clamp base 13, sealing sleeve 14, three-claw clamp 15, clamp spring 16, air intake base 20, air intake The connecting pipe 21, the air inlet upper cover 22, the upper cover air inlet 23, and the base air inlet 24 form.
[0026] Such as image 3 As shown, the main function of the clamp part is to fix the end of the pipette and seal the contact position. This part runs through the entire device housing sleeve 10 and has a three-jaw clamp 15 placed on the head that ...
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The invention relates to a device for assisting a pipette to conveniently transfer liquid. The head of the device is provided with a three-jaw clamp which can move up and down, a base of the three-jaw clamp is connected with the end of a control handle through a clamp-connecting rod, and a clamp spring is placed between the head of the shell of the device and the base of the three-jaw clamp; the lower end of a piston of a piston part is connected with a piston handle through a piston-connecting rod, a spring is placed between the lower end of the piston and the bottom of a piston cavity, the upper end of the piston cavity is provided with a one-way intake valve and a one-way exhaust valve, the one-way intake valve is connected with the base of the three-jaw clamp through a communicating tube, and the piston cavity is communicated with the outside through the one-way exhaust valve. The operation of the device is highly safe, and cannot be easily affected by the proficiency and skill ofan operator, and compared with the high-end precise pipettor, the device has the advantages of simple design and cheapness, can be widely used in teaching and ordinary laboratories, and can keep the liquid-transferring precision of the pipette.
Description
technical field [0001] The invention relates to a pipette transfer device, in particular to a pipette which can assist the pipette to conveniently transfer liquid. Background technique [0002] A pipette is a measuring device used to accurately measure and transfer liquids in experiments, and is widely used in chemistry, biology, pharmacy and related research fields. [0003] The most traditional and most widely used pipetting method in the experiment is to use the ear ball to assist the pipette to transfer the liquid. The whole operation process is jointly realized by two independent structures, namely: suction ear ball and pipette. The general operation is to grasp the pipette with one hand, and the other hand (that is, the usual hand in life) to control the suction ear ball. Firmly press the tip of the tip of the ear bulb into close contact with the end of the pipette, press the hollow part of the ear bulb with your hand to change the shape of the ear bulb, discharge pa...
Claims
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IPC IPC(8): B01L3/02
Inventor 李广田林春花项华中施昊韫乔培陈岚
Owner UNIV OF SHANGHAI FOR SCI & TECH