Enclosed transportation method of powder materials capable of absorbing moisture easily

Abstract

The invention discloses an enclosed transportation method of powder materials capable of absorbing moisture easily. The enclosed transportation method of powder materials capable of absorbing moisture easily comprises the following steps of feeding materials in a material bin, weighing, absorbing materials at vacuum negative pressure, matching liquids and the like. The enclosed transportation method of the powder materials capable of absorbing moisture easily is characterized by also comprising a circulating feeding technology, wherein the circulating feeding technology comprises the steps of extracting powder materials at the bottom of a material bin periodically, scattering the powder materials from the top of the material bin into the material bin, so that the powder materials in the material bin form a motion cycle state. According to the invention, in order to prevent materials which easily absorb moisture from caking, a compressed air blowing method with poor effects in the prior art is abandoned, a technology of cycle feeding by combining with hot air blowing is adopted, and by adopting the method provided by the invention, the problem that the normal powder material conveying is influenced by caking due to moisture absorption is solved fundamentally; and smooth conveying of moisture absorption powder materials and efficient production are ensured, and meanwhile, defect of powder material pollution caused by treating caked powder materials is solved.

Description

technical field [0001] The invention relates to a material conveying method, in particular to an airtight conveying method for moisture-absorbing powder suitable for industries such as pharmacy and food, and belongs to the technical field of medicine. Background technique [0002] In the pharmaceutical, food, chemical and other industries, the transportation of powder materials is an important process. In order to prevent the powder materials from being polluted during transportation, the currently more advanced transportation method is negative pressure airtight transportation. The equipment used for negative pressure airtight conveying includes silos, weighing tanks, vacuum pumps, vacuum suction devices, conveying pipelines and vacuum pipelines, etc. Taking the medicine powder transportation in the pharmaceutical industry as an example, the process is as follows: the medicine powder put into the silo is conveyed from the bottom of the silo into the weighing tank, and the m...

AI Technical Summary

Problems solved by technology

However, when the powder material to be transported is a hygroscopic powder material, this conveying process encounters the problem that the conveying cannot be carried out normally due to the powder material absorbing moisture and agglomerating.

For example: when transporting sodium chloride powder, sodium chloride is very easy to absorb moisture, so that the sodium chloride powder accumulated in the silo will agglomerate due to absorbing the moisture in the environment, and the agglomeration will make the sodium chloride The fluidity of the powder becomes poor, the transportation is not smooth, and when the agglomeration is serious, the material will be blocked, and it cannot be output from the bottom of the silo normally, so it can only be stopped for manual processing. This will not only seriously affect the normal rhythm of production, but also may cause Cause the material to be exposed outside the equipment and cause pollution to the sodium chloride powder

In order to solve the problem of moisture absorption and agglomeration of powder materials, the prior art adopts the method of feeding compressed air into the silo to prevent material agglomeration, but this method can only improve the agglomeration of powder materials on the surface of the silo, and The agglomeration of the powder in the lower part of the silo cannot be fundamentally improved

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