Constant-volume type automatic diluter

Abstract

The invention discloses a constant-volume type automatic diluter which comprises a trace-amount injector driven by a stepping motor, a constant-amount injector driven by a stepping motor, a seven-wayvalve with channels freely switched, and a four-way valve with channels freely switched. The seven-way valve comprises the first channel used for being connected with the trace-amount injector, the second channel used as a to-be-diluted liquid extraction inlet, the third channel used as a diluted liquid extraction inlet, the fourth channel used for quantitative allocation output, the fifth channelused for quantitative allocation input, the sixth channel used for being connected with the three-way valve, and the seventh channel used for trace-amount allocation discharge. The four-way valve comprises the channel I used for being connected with the constant-amount injector, the channel II used as a to-be-diluted liquid extraction inlet, the channel III used for being connected with the seven-way valve and the channel IV used for constant-amount liquid preparing discharge. The trace-amount injector is connected to the first channel. The constant-amount injector is connected to the channelI. The sixth channel and the channel III are connected, and a pipeline mixer is connected between the sixth channel and the channel III. Through the linkage of the double precision injectors and thetwo stepping motors, the various defects of various existing diluters and manual dilution are well overcome.

Description

technical field [0001] The invention relates to a constant-volume automatic diluter, which is widely used in all analysis and testing industries, and can realize high-precision automatic liquid dosing, automatic dilution, constant volume while diluting, automatic cleaning, auxiliary chemical titration, etc. for various liquid samples. advanced features. Background technique [0002] At present, there are many brands of liquid automatic diluters at home and abroad, such as the LH-025 automatic diluter of the domestic labhands brand, the OREM-2000 automatic diluter of the labhands brand, and the electronic bottle mouth of the German Hirschmann brand. Liquid dispenser, German Brand brand electronic bottle-top liquid dispenser, domestic Dalong electronic bottle-top liquid dispenser, in addition, there are domestic 6D four-in-one automatic liquid sampling system of Beijing Qingyan Strong and MicroLab of American Hamilton brand 600 series automatic diluter, the diluter and so...

AI Technical Summary

Problems solved by technology

[0003] In view of the fact that the various automatic or semi-automatic diluters at home and abroad can only accurately absorb and pipette liquid, but cannot precisely dilute and constant volume at the same time, the volume of the extracted liquid is not accurate enough, and there are errors in manual dilution. Low dilution efficiency, poor dilution accuracy, toxic and harmful and volatile liquids in the dilution process endanger the health of test personnel, waste of excess reagents or solutions in the preparation process, pollution of the environment, and many other shortcomings. The invention relates to a constant volume type The automatic diluter can solve the above problems well

Images