Pneumatic supernate taking device

Abstract

The invention provides a pneumatic supernate taking device which comprises a material drawing pipe, a piston, a sleeve, an upper end cover, a lower end cover, an ascending valve and a descending valve, wherein the piston is welded on the outer side wall of the material drawing pipe, and is connected with the sleeve in a sealing and sliding mode; two ends of the sleeve are respectively fixedly connected with the upper end cover and the lower end cover in a sealing mode; the material drawing pipe penetrates through the upper end cover, the sleeve and the lower end cover; a seal ring is axially arranged between the upper end cover and the material drawing pipe; a seal ring is axially arranged between the lower end cover and the material drawing pipe; the lower end cover is provided with air exhaust holes; the side wall of the sleeve is provided with a first air pipe interface and a second air pipe interface; and the ascending valve and the descending valve are both arranged on the outer wall of the sleeve. According to the pneumatic supernate taking device, an air cylinder principle is utilized, and by welding the piston and the material drawing pipe together as well as controlling the connection and disconnection of compressed air at two sides of the piston by the ascending valve and the descending valve, the material drawing pipe moves up and down; and the pneumatic supernate taking device is convenient to operate, and is high in automation degree.

Description

technical field [0001] The invention belongs to the field of extraction of traditional Chinese medicines, and in particular relates to a pneumatic upper liquid extractor. Background technique [0002] In recent decades, the production of Chinese herbal medicine has achieved a certain degree of mechanization and semi-mechanization. The extraction of traditional Chinese medicine includes many unit operations such as leaching, clarification, filtration and evaporation. Leaching is a very important unit operation, and it is the starting point of most traditional Chinese medicine production. The quality of the extraction process is directly related to the utilization rate of Chinese medicinal materials and the difficulty of subsequent processing. The upper liquid extractor is a device for extracting supernatant liquid from the storage tank, but the upper liquid extractors currently on the market are generally manual, requiring manual adjustment of the liquid level, poor operati...

AI Technical Summary

Problems solved by technology

The upper liquid extractor is a device for extracting supernatant liquid from the storage tank, but the upper liquid extractors currently on the market are generally manual, requiring manual adjustment of the liquid level, poor operating accuracy, and it is difficult to ensure that all The supernatant was taken out, and the purity of the taken out supernatant was not high enough.

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