High voltage pool for heating solvent extraction

Abstract

The invention relates to a sample extraction pool device, in particular to a mild-temperature-resistant and high-pressure-resistant extraction pool used for extracting solvent; a circular groove is arranged on the end surface of the pool body; small steps are arranged at the bottom of the internal side of the groove; small steps are arranged at the root of the internal side of the groove; a sealing cover is arranged on the end surface of the extraction pool body; a protuberant sealing cut is arranged at the internal side of the extraction pool body to which the sealing cover is close; wherein, a protuberant ring-shaped step is arranged in the cut; a guide hole for sealing cover is arranged in the middle of the sealing cover; a ring-shaped sealing gasket is arranged between the sealing cover and the end surface of the extraction pool; a circle of steps are arranged at the internal side above the gasket, just enough for placing a filtering sheet; a sealing cover cap is connected with the extraction pool through in a threaded way. The sample extraction pool device has the advantages that the device ensures that a gasket and a filtering sheet at the upper and lower sides are reduced from the sealing structure so that the arrangement and detachment are very convenient, the requirement for processing precision of mechanical components are lowered; the device not only has low manufacturing cost and long service life but also has low operating cost, and is especially suitable for being used for the extraction pool for device for accelerating solvent.

Description

technical field [0001] The invention relates to a sample extraction device, in particular to a medium-temperature and high-pressure resistant cell for solvent extraction, which is especially suitable for extracting organic matter in solid or semi-solid samples under heating and pressure conditions. Background technique [0002] The sample analysis process includes five parts: sampling, sample preparation and processing, analysis and measurement, data processing, and summary report. Statistics show that the time required for sample processing accounts for more than 50% of the entire analysis process, while the analysis and determination time only accounts for 6%, and the sample preparation time is 10 times the analysis and determination time. Therefore, the research on efficient and rapid sample preparation and automatic pretreatment methods has become one of the main directions of modern analytical chemistry research. In addition to traditional Soxhlet extraction, liquid-li...

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Problems solved by technology

The shortcoming of U.S. Patent (U.S.Pat.No.5647976) is: (1) the sealing pad of extraction cell and filter sheet etc. are all installed in the sealing gland, dismantling and cleaning after processing sample each time all need to use special tool, will The elastic card is taken out from the sealing cover, and then the threaded ring, sealing gasket, stainless steel filter and other parts; (2) The end of the extraction pool is designed as a sealed knife edge without any protective measures. During the cleaning and installation of the extraction pool , the edge of the knife is easily damaged due to parts colliding with each other or falling

The extraction pool with damaged knife edge cannot be sealed under high pressure, and can only be returned to the factory for reprocessing, which is expensive; (3) The design adopts a rotary compression-seal structure, and there is rotational movement between the metal seal knife edge and the sealing gasket during the sealing process. Even if the sealing knife edge is slightly damaged, the sealing gasket will be scratched, making it difficult to complete the high-pressure sealing function

At this time, the sealing gasket will be damaged after being used for several times, and needs to be replaced frequently, and the cost of use is very high; (4) Both the sealing cover and the threaded ring need to be processed with high precision, especially the concentricity is high, so the cost of the extraction cell is relatively high

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