Water sample pretreatment device for water quality detection

Abstract

The invention relates to a water sample pretreatment device for water quality detection, and belongs to the technical field of water quality detection, wherein the water sample pretreatment device comprises a tank body and a tank cover, an edge ring is fixed on the circumferential side wall of the tank cover, and the circumferential inner side wall of the edge ring is attached to the circumferential outer side wall of the tank body; a plurality of mounting grooves are formed in the circumferential inner side wall of the edge ring, mounting springs are fixed in the mounting grooves, mounting blocks are slidably connected in the mounting grooves, and the mounting springs are fixed to the mounting blocks; a plurality of connecting grooves allowing the mounting blocks to be inserted are formed in the circumferential outer side wall of the tank body, and the mounting blocks are located in the mounting grooves and the connecting grooves at the same time; the lower surfaces, located in the mounting grooves, of the mounting blocks are obliquely arranged; a sealing assembly for sealing the tank cover and the tank body is arranged between the tank cover and the tank body; and the tank cover is provided with an unlocking assembly used for enabling all the mounting blocks to completely enter the corresponding mounting grooves at the same time. The device has the advantages that the opening and closing efficiency of the tank body is improved, and the sealing performance of the tank body and the tank cover is improved, so that the pretreatment effect is better.

Description

technical field [0001] The present application relates to the technical field of water quality detection, in particular to a water sample pretreatment device for water quality detection. Background technique [0002] In the process of water quality testing, in order to improve the sensitivity of analysis and eliminate interference, water samples will be pretreated before water quality analysis, including digestion of water samples. The main purpose is to destroy organic matter, dissolve suspended solids, and dissolve various The element to be measured in a valence state is oxidized into a single high valence state or transformed into an easily separated inorganic compound. [0003] The hydrothermal reactor is a closed container that can decompose insoluble substances. It can be used for pretreatment of dissolved samples in the analysis of atomic absorption spectroscopy and plasma emission; it can also be used for small-dose synthesis reactions; it can also use the strong ac...

AI Technical Summary

Problems solved by technology

[0005] In view of the related technologies mentioned above, the inventor believes that there are the following defects: on the one hand, the setting of the threaded connection causes the opening and closing of the tank to be time-consuming; It is easy to wear and cause loosening, which makes the sealing performance poor, thereby reducing the effect of pretreatment

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