Liquid level detecting device for active immunity workstation

Abstract

The invention relates to a liquid level detecting device for an active immunity workstation and belongs to the technical field of medical examination, food examination and biological experimental facilities. The liquid level detecting device is characterized in that a plunger pump is arranged on a sampling arm cross bar; the plunger pump is fixed with the sampling arm cross bar; a solenoid valve is connected with a connecting end of a plunger pump chamber and is fixed on the plunger pump through a bolt; a sampling head connecting mechanism is vertically fixed on the sampling arm cross bar; thesampling head connecting mechanism is connected with the plunger pump through a hose; a pressure sensor in the connecting pipeline is connected with the pipeline. The liquid level detecting device has the beneficial effects that: 1) the risk of cross contamination is avoided, 2) the material cost of instrument is reduced, 3) the plunger pump is directly fixed on the sampling arm cross bar so thatthe length of the connecting pipe of the sampling head connecting mechanism is shortened and the sampling accuracy is increased, and 4) the solenoid valve is used for controlling the connection of the pipeline and air, the pipeline pressure directly recovers to the initial air pressure after the plunger pump is started, and the pressure change in the pipeline caused by the resetting of the plunger pump can be avoided.

Description

technical field [0001] The invention belongs to the technical fields of medical inspection, food inspection and biological experiment equipment. Background technique [0002] In the process of medical testing, food testing, and biological experiments, ELISA and CLIA are routine testing methods in clinical laboratories. The current testing process is to add samples and reagents on a 96-well plate, then incubate and wash the plate , data measurement and other work, the workload of adding samples and reagents is the largest in the whole process, and the accuracy of sample addition and position accuracy play a key role in the entire detection process. At present, there are mainly two methods for adding samples and reagents in China: manual and automatic. Due to limited conditions in small and medium-sized medical institutions in my country, the sampling process is all done manually, and there are errors in the position of the sample and the accuracy of the sample, which affects...

AI Technical Summary

Problems solved by technology

Due to limited conditions in small and medium-sized medical institutions in my country, the sampling process is all done manually, and there are errors in the sampling position and sampling accuracy, which affect the test results.

However, the imported automatic sampling system has the disadvantages of high cost, high cost of consumables, large volume, complicated operation, and high maintenance cost, so it is difficult to be popularized.

[0003]The sampling mechanism is the core in the automatic sampling system. The existing domestic equipment is not accurate in absorbing and dispensing liquid, while foreign equipment is expensive

In addition, the existing sampling equipment also has the problem of cross-contamination between samples, which seriously affects the quality of inspection work.

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