Micro liquid metering ceramic pump for drug production

Abstract

The invention discloses a micro liquid metering ceramic pump for drug production, and belongs to the technical field of metering pumps. The ceramic pump comprises a driving section and a pump head, wherein the center of the driving section is connected with an output shaft of a stepping motor; a self-aligning roller bearing is arranged on an inner side wall of a cavity of the driving section; a cylinder body is arranged in the pump head in a sleeving manner; a liquid inlet and a liquid outlet which are corresponding mutually are formed in the cylinder body; a plunger capable of rotating and sliding relatively is arranged in the cylinder body in a matching manner; an opening is formed at the inner end of the plunger; the outer end of the plunger extends out of the cylinder body; a plunger sleeve is arranged at the outer end of the plunger, and connected with a plunger pin perpendicular to the plunger sleeve; the plunger pin is connected with the self-aligning roller bearing from the inner side of the cavity of the driving section, so that the plunger can be obliquely arranged relative to the driving section; and an included angle a between a central line of the plunger and a central line of the driving section is 0-12 degrees. According to the micro liquid metering ceramic pump for the drug production, a valveless structure effectively solves the common problems of a general metering pump, such as blocking and seizure.

Description

technical field [0001] The invention relates to a metering pump, in particular to a micro-liquid metering ceramic pump for medicine production. Background technique [0002] At present, in the process of drug production, it is necessary to measure the drug. When the drug is solid, it can be measured by weighing or other methods; when the drug is liquid, especially for high-viscosity liquids, the liquid contains particles, etc. The reason is that the liquid is easy to stick to the various parts in the pump, causing the metering components to be blocked or seized, which seriously affects the metering accuracy of the metering device. Contents of the invention [0003] The purpose of the present invention is to: aim at the above-mentioned problems, to provide a micro-liquid metering ceramic pump for pharmaceutical production, wherein the valveless structure effectively solves the common problems of general metering pumps such as blockage and seizure. The processing accuracy h...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to: aim at the above existing problems, to provide a micro-liquid metering ceramic pump for pharmaceutical production, wherein the valveless structure effectively solves the common problems of general metering pumps such as blockage and seizure. The processing accuracy has reached the micron level, and ultra-high spitout accuracy can be obtained. It is widely used in the micro-precision injection of liquid medicine and the delivery of various high-viscosity liquids.

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