An integrated equipment for crushing and screening pharmaceutical raw materials

Abstract

The invention discloses crushing and sieving integrated equipment for medicinal raw materials. In a shell of the equipment, a first-stage grinding hammer, a second-stage grinding hammer, a third-stage grinding hammer and an air conveying device are sequentially arranged, wherein the first-stage grinding hammer comprises a first hammer body and a rectangular hammer head; the inclination angle of the rectangular hammer head and the first hammer body is 20-45 degrees; in the shell, a grinding platform is arranged corresponding to the first-stage grinding hammer; a partition plate is arranged between the third-stage grinding hammer and the air conveying device; a regrinding groove is formed between the partition plate and the third-stage grinding hammer; a powder separation chamber is arranged in the shell; a crude powder reflux pipe is arranged between the powder separation chamber and the second-stage grinding hammer; the powder separation chamber is provided with a powder outlet which is connected with a powder collecting chamber; the powder collecting chamber is connected with the first-stage grinding hammer by an air channel pipe. The crushing and sieving integrated equipment for the medicinal raw materials, disclosed by the invention, can be used for preventing generation of high temperature during a repeated grinding process and also causes no dust and waste gas pollution.

Description

technical field [0001] The invention relates to a device for crushing and sieving medicinal raw materials. Background technique [0002] In the process of drug preparation, especially in the process of preparing Chinese patent medicines, the smaller the powder particles of drug raw materials (such as traditional Chinese medicine raw materials) after crushing, the easier it is for the active ingredients of drug raw materials to be further extracted and utilized. [0003] The existing preparation method of drug powder is generally to pulverize with a pulverizer first, and then sieve with a sieving machine, which requires the use of two different equipment, so the production efficiency is not high. [0004] Chinese patent CN100542676C provides an axial-flow hammer mill, in which the outer periphery of the rotor in the grinding chamber is provided with screens half-surrounding the rotor from the bottom and both sides, therefore, it can simultaneously realize screening during the...

AI Technical Summary

Problems solved by technology

[0003] The existing preparation method of drug powder is generally crushed with a pulverizer first, and then sieved with a sieving machine, which requires the use of two different equipment, so the production efficiency is not high

[0004] Chinese patent CN100542676C provides an axial flow hammer mill, in which the outer periphery of the rotor in the crushing chamber is provided with screens half-surrounding the rotor from the bottom and both sides, therefore, it can simultaneously realize screening during the crushing process, However, when the powder particles that need to be prepared are relatively small, for example, when powder particles of more than 200 meshes are required to be prepared, this structure is difficult to control the dust of the sieved powder particles, that is, it is easy to cause waste of powder dust. In addition, this technical solution also Not convenient for continuous production

[0005] When preparing high-mesh powder particles, such as powder particles above 200 mesh, it is necessary to solve the problem that the high temperature generated by long-time grinding may damage the raw material of the drug, and the problem of how to collect the prepared fine powder

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