Liquid chromatogram parallel high-pressure infusion pump
A liquid chromatography and infusion pump technology, applied in the field of liquid chromatography parallel high-pressure infusion pumps, can solve the problem of liquid supply volume, liquid supply ratio, liquid supply pressure and pressure pulsation can not be adjusted, liquid chromatography high pressure parallel cam pump processing technology problems such as poor performance, accuracy of liquid supply, and poor repeatability, to achieve the effects of adjustable hydraulic pressure and pressure pulsation, high repeatability, and simple processing
Active Publication Date: 2015-10-28
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
[0052] Such as figure 1 -4, in this embodiment provides a Liquid Chromatography Parallel High Pressure Infusion Pump , the Liquid Chromatography Parallel High Pressure Infusion Pump It includes two identical pump heads 1 and two reciprocating liquid delivery mechanisms 2 respectively connected to the two pump heads 1. The pump also includes a fixed assembly 3, a driven assembly 4 and three driving devices. The preferred three driving devices are all motors (for ease of description and understanding, the three motors are separately marked, the first motor 5 for driving the driven assembly, the second motor 6 and the second motor for driving the two adjustment blocks The third motor 7). The two reciprocating liquid feeding mechanisms 2 are respectively fixedly connected with the fixing assembly 3 .
[0053] The driven assembly 4 includes a connecting piece 8 , two planar moving cams 9 with the same shape and two adjustment blocks 10 with the same shape.
[0054] The two m...
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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 high-pressure parallel cam pumps for liquid chromatography, as shown in Figure ... , include: a motor (not shown in the figure), a pump main body 25 fixedly connected to the pump main body 25 and two identical pump heads 1, and the motor The connected camshaft 26, the two parallel cylindrical cams 27 fixedly connected to the camshaft 26 with the same shape and 180 degrees to each other, two sets of reciprocating liquid feeding mechanisms 2 with the same structure, and the two cams 27 respectively pass through a set of reciprocating The liquid delivery mechanism 2 is connected with two pump heads 1; the reciprocating liquid delivery mechanism 2 includes a plunger push rod 28, a plunger back seat 29 and a plunger 30 fixedly connected with the plunger back seat 29, and the plu...
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