A bag-turning mechanism of a bag-turning filter centrifuge

Abstract

The invention belongs to solid-solution separation equipment, and relates to a bag turning mechanism of a bag turning type filtering centrifugal machine. The mechanism comprises an outer shaft, an inner shaft, a drum, a drum door and a pushing disc; the pushing disc is connected with one end of the inner shaft, a filter cloth is connected between the pushing disc and the drum, the outer shaft is driven by a motor, the other end of the inner shaft is provided with an axial blind hole to form an oil cylinder, a piston rod in the oil cylinder is fixedly connected with a hydraulic oil rotating output shaft of a rotating joint, an oil cylinder inner cavity is divided into a piston inner cavity and a piston outer cavity through a piston, the piston rod and the hydraulic oil rotating output shaft are each provided with a first oil way and a second oil way communicating the piston inner cavity and the piston outer cavity, the hydraulic oil rotating output shaft stretches into a sleeve fixed to a rack, an oil unloading hole, a first oil passing hole, a second oil passing hole and an oil unloading hole are formed in the side wall of the sleeve sequentially at intervals, the first oil passing hole is communicated with the first oil ways or the second oil ways, the second oil passing hole is communicated with the second oil ways or the first oil ways, and a clutch is arranged between the outer shaft and the inner shaft. The mechanism is suitable for solid-solution separation of the pharmaceutical chemical industry.

Description

technical field [0001] The invention belongs to the technical field of solid-liquid separation equipment in the pharmaceutical and chemical industries, and particularly refers to a bag-turning mechanism of a bag-turning filter centrifuge. Background technique [0002] In 1971, the German HEINKEL company invented the world's first inverted bag centrifuge, which solved many problems encountered by traditional industries when using solid-liquid separation equipment. In 1975 (HEINKEL) officially launched HF to the market. series of centrifuges. [0003] In November 1998, the German (HEINKEL) company launched it at the Beijing International Pharmaceutical Equipment Exhibition, which aroused great repercussions in the domestic pharmaceutical industry. It was agreed that the machine belongs to the world's first-class solid-liquid separation equipment, and domestic pharmaceutical machine manufacturers have invested in research. Development, eventually failed because of its technica...

AI Technical Summary

Problems solved by technology

[0004] At present, most domestic pharmaceutical and chemical industries use manual or scraper unloading centrifuges. Manual unloading centrifuges are labor-intensive and prone to cross-contamination between people and materials. Scraper centrifuges will inevitably form a residual material layer on the inner layer of the drum. That is to say, it affects the separation effect and causes the damage of crystal grains and the loss of materials, while the "inverted bag type" completely overcomes the above shortcomings. This centrifuge is the world's best centrifuge with the smallest material loss, the best washing effect, and the smallest product residual humidity. A fully automatic centrifugal filter equipment, especially suitable for manufacturing and chemical industries, can be used as the first choice for the centrifuge manufacturing industry today

[0005] CN100434186C discloses a kind of "turning bag type filter centrifuge", the inner shaft of this structure realizes the axial movement of the moving shaft and the bag turning action through the complex friction clutch and the push of the threaded shaft and the moving shaft. The disadvantage is: the screw drive The transmission action is slow, the transmission precision is low, the structure is complicated, and the production cost is high

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