Scraper falling-film evaporator for material concentration

Abstract

The invention relates to the technical field of evaporators, and discloses a scraper falling-film evaporator for material concentration, which comprises a tank body, the middle part of the inner cavity of the tank body is rotatably sleeved with a rotating rod, the outer wall of the rotating rod is fixedly connected with a connecting rod, and one end, close to the inner wall of the tank body, of the connecting rod is connected with a butt joint rod; and a scraping plate is fixedly installed at the end, away from the connecting rod, of the butt joint rod, and a magnetic induction coil corresponding to the scraping plate in position is fixedly installed on the outer wall of the tank body. A current in different directions is introduced into the electromagnet, so that the magnetic field direction of the electromagnet is changed, attraction and repulsion effects on the vertical magnet are achieved, when the damaged scraper is taken down, the electromagnet has upward repulsive force on the vertical magnet, the butt joint rod can be taken down from the connecting rod, and when a new scraper is installed, through the attraction effect of the electromagnet on the vertical magnet, the connecting stability of the connecting rod and the butt joint rod is guaranteed, the replacement mode is simple and convenient, and the replacement cost is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of evaporators, in particular to a scraper falling film evaporator for material concentration. Background technique [0002] Thin film evaporator is a device used in petrochemical, pharmaceutical and food processing industries to remove volatile matter and distill products from liquid feed and solid discharge materials. It is used in chemical, petrochemical, pharmaceutical, pesticide, daily Chemical, food, fine chemical and other industries have been widely used. Its working principle is that after the material enters the evaporator, the rotating distributor throws the material evenly on the inner wall of the heating barrel, and the material flows downward due to gravity, and then is forced to form a film by the rotating scraper. The lower material moves downward in a spiral pattern, absorbs the heat transferred by the steam in the jacket, evaporates rapidly, and the secondary steam rises and is discharged ...

AI Technical Summary

Problems solved by technology

[0005] In view of the deficiencies in the use of the existing evaporators proposed in the background technology, the present invention provides a scraper falling film evaporator for material concentration, which is capable of periodic film formation and scraping, and simple and convenient scraper replacement. Advantages, it solves the problem of laborious replacement of the scraper and carbonization of the material on the inner wall of the tank proposed in the above-mentioned background technology

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