Centrifugal mechanism with location orientation function

Abstract

The invention discloses a centrifugal mechanism with a location orientation function, wherein a main shaft is installed in a shaft sleeve by an upper bearing structure and a lower bearing structure; ahorizontal rotor is installed on the top part of the main shaft; the shaft sleeve is positioned and installed on a plate base; a direct current motor which drives the main shaft to make the horizontal rotor do centrifugal motion is disposed; a stepping motor which drives the main shaft to make the horizontal rotor do accurate positioning motion is disposed; the direct current motor is installed on the bottom of the plate base and connected with the main shaft with a coupler; the stepping motor is installed on the bottom of the plate base located at one side of the main shaft; the stepping motor is connected with a one-way clutch installed on the main shaft by a synchronous pulley transmission pair; an inner ring of the one-way clutch is firmly installed on the main shaft; an outer ring isfirmly installed in a driven pulley; and a drive pulley is installed on a spindle of the stepping motor and connected to the driven pulley by a synchronous belt. The centrifugal mechanism disclosed by the invention has a centrifugation function and an oriented motion function and has the advantages that the size is small; the structure is simple; the cost is cheap; the mechanism can be installedin a full-automatic urine biochemical analyzer easily; and a sampling arm can be used for sampling and sample adding easily.

Description

technical field [0001] The invention relates to the internal structure of a fully automatic biochemical instrument, in particular to a centrifugal mechanism with a position accurate stop function. Background technique [0002] Currently common urine biochemical detection methods include: colorimetry, electrophoresis, immunoelectrophoresis, immunoturbidimetry, emission immunoassay, enzyme-linked immunosorbent assay, etc. [0003] The commonly used method for most urine biochemical projects is immunoturbidimetry, which is stable, highly sensitive, and specific, and the results of clinical tests are reliable. Immunoturbidimetry is further divided into immunotransmission turbidimetry and immune scatter turbidimetry, but when immunoturbidimetry is used to measure urine biochemical items, the urine turbidity or particles will affect the test results. In order to solve the phenomenon of urine turbidity, the most common method is to use a centrifuge to separate the urine, and take ...

AI Technical Summary

Problems solved by technology

[0006] 1. This method needs to manually put the centrifuged sample on the biochemical analyzer, and be very careful. If the centrifuged urine becomes cloudy again due to collision or shaking during placement, it will affect the test result

[0007] 2. This kind of automatic urine biochemical analyzer cannot be fully automatic in the true sense, which increases the workload of the inspectors

[0008] 3. The cost of using an external centrifuge is relatively high

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