Drying equipment for production of hydroxypropyl methyl cellulose

Abstract

The invention relates to the technical field of drying equipment, in particular to drying equipment for hydroxypropyl methyl cellulose production, which comprises a drying cylinder and a dryer arranged in the drying cylinder, a rotating shaft is rotatably mounted in the drying cylinder, the rotating shaft is of a hollow structure, at least one blade is fixedly mounted in the middle of the rotating shaft, and the blade is arranged in the drying cylinder. First through holes and second through holes are symmetrically formed in the upper and lower sides of the blades on the rotating shaft. The dryer is arranged in the drying cylinder, hot air is discharged from the first through hole and the second through hole, materials enter the drying cylinder and then make contact with the hot air discharged from the first through hole, preliminary drying of the materials through the hot air is achieved, the materials subjected to preliminary drying can still be coagulated into blocks, the materials fall under the gravity effect, and blades make contact with the materials; the materials are scattered and then make contact with hot air exhausted from the second through holes, secondary drying of the hot air on the materials is achieved, and the drying effect of the materials is improved.

Description

technical field [0001] The invention relates to the technical field of drying equipment, in particular to a drying equipment used for the production of hydroxypropyl methylcellulose. Background technique [0002] Hydroxypropyl methylcellulose is white or off-white powder, and its production process is refined cotton pulverization-etherification and alkalization-press filtration-drying-crushing-in-factory packaging-mixing-packaging for delivery. In the production and preparation process of hydroxypropyl methylcellulose, the use of drying equipment is an indispensable step. Hydroxypropyl methylcellulose is easy to stick into blocks, so that the cellulose cannot be fully dried, which is not conducive to the subsequent production process. Work properly. [0003] In the prior art, the utility model patent with the publication number CN210569707U discloses a drying device for producing hydroxypropyl methylcellulose, comprising: a body; a first air intake pipe is arranged under on...

AI Technical Summary

Problems solved by technology

In the production and preparation process of hydroxypropyl methylcellulose, the use of drying equipment is an indispensable step. Hydroxypropyl methylcellulose is easy to stick into blocks, so that the cellulose cannot be fully dried, which is not conducive to the subsequent production process. Work properly

[0003] In the prior art, the utility model patent with the publication number CN210569707U discloses a drying device for producing hydroxypropyl methylcellulose, comprising: a body; a first air intake pipe is arranged under one side of the body, and A second air intake pipe is provided; a feed inlet is provided on the top of the body; a drying cylinder is arranged inside the body, and an annular filter screen is horizontally provided below the drying cylinder, and one end of the annular filter screen is connected to the drying The cylinder is fixedly connected, and the other end is fixedly connected with the inner wall of the body; the inside of the drying cylinder is a drying chamber, and a discharge chamber is formed between the outer wall of the drying cylinder, the inner wall of the body and the upper surface of the annular filter; The bottom of the drying cylinder is provided with a slag discharge port, and the slag discharge port is provided with a valve; another example, the invention patent of publication number CN112556317A discloses a drying equipment for the production of hydroxypropyl methylcellulose, including a cyclone dust collector, a hot air The supply module and the support frame, the surrounding side of the cyclone dust collector and the hot air supply module are all fixedly connected to the support frame, and one end of the air inlet of the hot air supply module is fixedly connected with the cyclone dust collector; although the above technical scheme can Propyl methyl cellulose can be dried to a certain extent, but the drying time is long, and the drying effect is difficult to meet the expected requirements

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