Dry granulator inclined extrusion system

Abstract

The invention discloses an inclined type extrusion system of a dry granulating machine. The inclined type extrusion system comprises a powder device, a driving shaft, a driven shaft and press rollers; a stand front plate is arranged at the same ends of an upper box body and a lower box body in a matching way; the upper box body and the lower box body are respectively and internally provided with a conical roller bearing and a cylindrical roller bearing; the press rollers are respectively provided with a scraper assembly; the press rollers are arranged in an inclined way and at the ends of the driving shaft and the driven shaft which penetrate out of the stand front plate; the surfaces of the press rollers have surface grains. Compared with the prior art, the inclined type extrusion system is provided with the two press rollers which are arranged in an inclined way, so that the influence of gravity of a horizontal arrangement structure of the press rollers to materials can be eliminated, and the problem that low-density materials are difficult to transport by a vertical arrangement structure of the press rollers can be solved; the two press rollers are installed by cantilevers, thus being convenient to disassemble and clean; due to the design of the dimpled grain asymmetrical structure of the grains, the pushing force of a rolling wheel for the materials is higher in the rolling process, the gas is more easily discharged in the rolling process, and the phenomenon that the rolling effect is influenced by the gas explosion generated by a sheet formed by rolling can be avoided.

Description

technical field [0001] The invention belongs to the technical field of mechanical equipment, and in particular relates to an inclined extrusion system of a dry granulator used in the fields of medicine, food, chemical industry and the like. Background technique [0002] The extrusion system of the dry granulator is usually driven by gear pair meshing, so that the two pressure rollers can rotate at the same speed and in different directions. According to the arrangement of the two pressure rollers, it can be divided into a horizontally arranged dry granulator extrusion system and a vertically arranged dry granulator extrusion system. The extrusion system of the dry granulator with the pressure rollers arranged horizontally, the feeding screw is directly above the middle of the two pressure rollers, and is vertically installed and fastened on the transmission box. The pressure roller is supported inside the transmission box through the shaft. When granulating, the screw conve...

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Problems solved by technology

[0003] For the extrusion system of the dry granulator with the rollers arranged horizontally, since the objects are located inside the transmission box at the same time, although the parts (such as bearings) that support the transmission shaft will be installed with a cover such as a shaft sleeve to protect them, However, due to the small particle size of the powder material, it is easy to pass through the outer cover and enter the transmission parts, which will not only cause the transmission parts to be stuck, but also cause cross-contamination of drugs

On the other hand, the transmission parts are usually lubricated with lubricating oil. Due to the high-speed operation of the transmission parts during work, the splashing of lubricating oil will cause the quality of the medicine to be unqualified.

[0004] For the dry granulator extrusion system with rollers arranged vertically, compared with the dry granulator extrusion system with rollers arranged horizontally, the material does not use the gravity of the material itself during the conveying process, resulting in low-density materials During the conveying process, it is difficult to convey and easy to block materials, which will eventually affect the quality of high-density flakes and the effect of dry granulation

In addition, the cantilever-mounted conveying screw, compared with the extrusion system of a dry granulator with rollers arranged horizontally, the sealing ring of the conveying screw is prone to failure

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