Screening machine

Abstract

The invention provides a screening machine, belongs to the field of biochemical technique, and solves the problem in the prior art that the screening effect is poor. The screening machine comprises a box, wherein a feeding hole is formed in one side of the top end of the box; a feeding mechanism capable of conveying material in the box is arranged out of the feeding hole; a cavity is formed in the box; a filter screen I is horizontally arranged in the cavity; a filter screen II is obliquely arranged below the filter screen I; a vibration motor is fixed at the upper end of the filter screen II; the pore diameter of the filter screen I is greater than that of the filter screen II; the filter screen I and the filter screen II sequentially divide the cavity into a lower cavity, a middle cavity and an upper cavityfrom bottom up; a motor I is fixed at the top of the upper cavity; the output shaft of the motor I is vertically downwards; a stirring rod is fixed at the end part of the output shaft of the motor I; a discharging hole I is formed in the lower end of the filter screen II on the inner wall of the box; a storage box is arranged on one side of the box; and the discharging hole I communicates with the storage box through a discharging pipe. The screening machine has the advantage of an excellent screening effect.

Description

technical field [0001] The invention belongs to the technical field of biochemistry and relates to a screening machine. Background technique [0002] The Chinese aliases of nicotinamide are: nicotine amide, vitamin B3 (VB3), nicotinamide, 3-pyridine carboxamide, the English name is nicotinamide, the molecular formula is C6H6N2O, and the molecular weight is 122.13. It is a white needle-like crystal or powder and belongs to the vitamin B family. Niacinamide, as one of the B vitamins, is an important component of coenzyme I and coenzyme II in humans and animals, and participates in lipid metabolism in the body, the oxidation process of tissue respiration and the process of anaerobic decomposition of carbohydrates. It is a component of dehydrocoenzyme in organisms, which can promote biological oxidation process and tissue metabolism, and plays an important role in maintaining the integrity of normal tissues (especially skin, digestive tract and nervous system). Therefore, nicot...

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Problems solved by technology

[0003] The production process of nicotinamide is as follows: biocatalyst cultivation (production of strains-seed tank-fermentation tank-membrane separation) and biocatalytic reaction and post-treatment (catalyzed hydration reaction-membrane separation ultrafiltration-concentration-granulation- Drying-screening); the screened product is the finished product, so the last step of screening is related to the quality of the product. At present, most of the screening machines on the market can only screen out large particles that exceed the normal range, but relatively large particles in the product Smaller particles are still doped in the product, which has a relatively certain impact on the quality of the product

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