Liquid chromatography parallel high pressure infusion pump
A liquid chromatography and infusion pump technology, which is applied in the field of liquid chromatography parallel high-pressure infusion pumps, can solve the problem that the liquid supply volume, the liquid supply ratio, the liquid supply pressure and the pressure pulsation cannot be adjusted, the accuracy of the liquid supply volume, and the poor repeatability. Insufficient precision and other problems, to achieve the effect of adjustable hydraulic pressure and pressure pulsation, simple processing and high processing accuracy
Active Publication Date: 2017-04-19
欧世盛(北京)科技有限公司
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Problems solved by technology
[0008] The object of the present invention is to provide a liquid chromatography parallel high-pressure infusion pump to solve the problem of poor processing technology and processing problems of the liquid chromatography high-pressure parallel cam pump in the prior art. Insufficient precision, poor accuracy and repeatability of the liquid supply volume of the pump, technical problems that cannot be adjusted for the liquid supply volume, liquid supply ratio, liquid supply pressure and pressure pulsation
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Embodiment 1
[0040] like Figure 1-4 As shown, in this embodiment, a liquid chromatography parallel high-pressure infusion pump is provided, and the liquid chromatography parallel high-pressure infusion pump includes two identical pump heads 1, and two pump heads 1 respectively connected to two The reciprocating liquid feeding mechanism 2 with the same structure, the pump also includes a fixed component 3, a driven component 4 and three driving devices. Preferably, the three driving devices are all motors (for the convenience of distinguishing description and understanding, the three motors are marked separately, the first motor 5 for driving the driven assembly, the second motor 6 for driving the two adjustment blocks and the The third motor 7). The two reciprocating liquid feeding mechanisms 2 are respectively fixedly connected with the fixing assembly 3 .
[0041] The driven assembly 4 includes a connecting piece 8 , two flat plate-shaped moving cams 9 with the same shape, and two adj...
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The invention provides a liquid chromatogram parallel high-pressure infusion pump, and relates to the field of chromatogram detection. The liquid chromatogram parallel high-pressure infusion pump comprises two same pump heads, and two reciprocating liquid conveying mechanisms which are the same in structure and are connected with the two pump heads respectively. The liquid chromatogram parallel high-pressure infusion pump further comprises a fixing assembly, a driven assembly and three drive devices, wherein one drive device is fixedly connected with the fixing assembly and used for driving the driven assembly to reciprocate. The driven assembly comprises a connecting piece, two flat-plate-shaped moving cams and two adjusting blocks which are the same in shape. The two moving cams are symmetrically arranged and rotationally connected with the connecting piece. The plate faces, on the same side, of the two moving cams abut against wheels of the two reciprocating liquid conveying mechanisms, and the plate faces, on the other sides, of the two moving cams abut against the two adjusting blocks. The two adjusting blocks are symmetrically arranged. The other two drive devices are used for driving the two adjusting blocks to reciprocate. The liquid chromatogram parallel high-pressure infusion pump solves the technical problems of insufficient machining precision, the liquid supplying amount, the liquid supplying proportion, the liquid supplying pressure and the pressure pulsation in the prior art.
Description
technical field [0001] The invention relates to the field of chromatography detection, in particular to a liquid chromatography parallel high-pressure infusion pump. Background technique [0002] Existing liquid chromatography high pressure parallel lobe pumps such as Figure 4 As shown, it includes: a motor (not shown in the figure), two identical pump heads 1 fixedly connected with the pump main body 25 and the pump main body 25, a camshaft 26 connected with the motor, and two fixedly connected to the camshaft 26. Two parallel cylindrical cams 27 whose shapes are 180 degrees to each other, two sets of reciprocating liquid feeding mechanisms 2 with the same structure, and two cams 27 are respectively connected with two pump heads 1 through a set of reciprocating liquid feeding mechanisms 2; The hydraulic mechanism 2 includes a plunger push rod 28, a plunger rear seat 29 and a plunger 30 fixedly connected to the plunger rear seat 29. One end of the plunger push rod 28 is pro...
Claims
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IPC IPC(8): F04B23/06F04B11/00F04B17/03F04B49/12F04B49/20F04B49/08F04B53/00
Inventor 李秋芬
Owner 欧世盛(北京)科技有限公司