High-pressure tandem liquid chromatography infusion pump
A technology of liquid chromatography and infusion pumps, which is applied in the field of liquid chromatography series high-pressure infusion pumps, and can solve the problem of poor processing technology, liquid supply volume, liquid supply pressure and pressure pulsation of liquid chromatography high-pressure series cam pumps, and liquid supply problems. Problems such as measurement accuracy and poor repeatability, etc., to achieve the effect of high repeatability, small pressure pulsation, and simple processing
Active Publication Date: 2015-10-21
欧世盛(北京)科技有限公司
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Problems solved by technology
[0007] The object of the present invention is to provide a liquid chromatography series high-pressure infusion pump to solve the problem of poor processing technology and processing problems of liquid chromatography high-pressure series cam pumps in the prior art. Insufficient precision, poor accuracy and repeatability of the liquid supply volume of the pump, technical problems that the liquid supply volume, supply pressure and pressure pulsation cannot be adjusted
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Embodiment 1
[0052] Such as figure 1 -4, in this embodiment, a Liquid chromatography series high pressure infusion pump , Said Liquid chromatography series high pressure infusion pump It includes a main pump head 1 and an auxiliary pump head 101 connected with the main pump head 1 through a high-pressure infusion pipe, and two reciprocating liquid feeding mechanisms 2 with the same structure respectively connected with the main pump head 1 and the auxiliary pump head 101, The pump also includes a fixed assembly 3, a driven assembly 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 separately identified, used for driving the first motor 5 of the driven assembly, and used for driving the second motor 6 and the second motor of the two adjustment blocks. The third motor 7). The two reciprocating liquid feeding mechanisms 2 are respectively fixedly connected with the fixi...
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The invention provides a high-pressure tandem liquid chromatography infusion pump, and relates to the field of chromatographic detection. The high-pressure tandem liquid chromatography infusion pump comprises a primary pump head and a secondary pump head as well as two reciprocating liquid feeding mechanisms which are connected with the primary pump head and the secondary pump head respectively, and are the same in structure, and further comprises a fixed assembly, a driven assembly and three drive devices, wherein one drive device is fixedly connected with the fixed assembly and used for driving the driven assembly to reciprocate; the driven assembly comprises a connector, two flat-plate-shaped moving cams and two regulating blocks which are the same in shape; the two moving cams are symmetrically arranged and are rotatably connected with the connector respectively; plate surfaces at the same side of the two moving cams are resisted against roller wheels of the two reciprocating liquid feeding mechanisms respectively; and the plate surfaces at the other side of the two moving cams are resisted against the two regulating blocks respectively; the two regulating blocks are symmetrically arranged; and another two drive devices are used for driving the two regulating blocks to reciprocate. According to the high-pressure tandem liquid chromatography infusion pump, the technical problems of insufficient processing precision, insufficient liquid feeding quantity, insufficient liquid feeding pressure and insufficient pressure pulsation in the prior art are solved.
Description
technical field [0001] The invention relates to the field of chromatography detection, in particular to a liquid chromatography series high-pressure infusion pump. Background technique [0002] Existing high-pressure tandem pumps for liquid chromatography, such as Figure 4 As shown, it includes: a motor (not shown), the main pump head 1 and the auxiliary pump head 101 fixedly connected to the pump body 25 and the pump body 25, two cleaning blocks, a camshaft 26 connected to the motor, fixedly connected to the The cylindrical main pump head cam 27 on the camshaft 26 and the cylindrical auxiliary pump head cam 2701, two sets of reciprocating liquid delivery mechanisms 2 with the same structure, and the main pump head cam 27 communicate with the main pump through a set of reciprocating liquid delivery mechanisms 2. The head 1 is connected, and the auxiliary pump head cam 2701 is connected with the auxiliary pump head 101 through another set of reciprocating liquid delivery mec...
Claims
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IPC IPC(8): F04B9/04F04B17/03F04B23/06
Inventor 李秋芬
Owner 欧世盛(北京)科技有限公司