Multistage filtering device for preparation of olopatadine hydrochloride eye drops

Abstract

The invention discloses a multistage filtering device for preparation of olopatadine hydrochloride eye drops, and relates to the technical field of eye drop preparation equipment. The multistage filtering device for preparation of olopatadine hydrochloride eye drops comprises a cylinder body and a filter element, the top of the cylinder body is movably connected with a cylinder cover, the bottom of the cylinder cover is fixedly connected with positioning pins, positioning grooves are formed in the top of the cylinder body, the positioning pins are inserted into the positioning grooves, sealing grooves are formed in the top of the cylinder body and the bottom of the cylinder cover, and the inner walls of the sealing grooves are movably connected with the surfaces of sealing strips. By arranging movable plates, round rods, fixed blocks and cams, the problems that in the prior art, when a common multistage filtering device for preparing olopatadine hydrochloride eye drops is used and a polyethersulfone membrane filter element is replaced, due to the fact that the number of bolts for fixing the cylinder cover is large, the cylinder cover is inconvenient to disassemble and assemble, and accordingly the filter element is inconvenient to replace are solved.

Description

technical field [0001] The invention relates to the technical field of equipment for preparing eye drops, in particular to a multistage filter device for preparing olopatadine hydrochloride eye drops. Background technique [0002] Olopatadine hydrochloride eye drops are mainly composed of olopatadine hydrochloride, disodium hydrogen phosphate, sodium chloride, sodium hydroxide and distilled water. Olopatadine hydrochloride eye drops are mainly produced by washing bottles and plugs , sterilization, preparation and filling and other production processes. During the preparation process, the raw materials are added to the preparation tank for preparation. After preparation, filtration is carried out, and after filtration, the filling process is carried out. In the filtration process, microporous membrane filters are often used to filter The solution is filtered, and multiple microporous membrane filters are connected to perform multi-stage filtration on the prepared solution. Th...

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Problems solved by technology

[0004] The invention provides a multi-stage filter device for the preparation of olopatadine hydrochloride eye drops, which has the advantage of more convenient replacement of the filter element, so as to solve the problem of the common olopatadine hydrochloride eye drops preparation in the prior art. When replacing the polyethersulfone membrane filter element when the multi-stage filter device is in use, due to the large number of bolts fixing the cylinder cover, it is inconvenient to disassemble and assemble the cylinder cover, resulting in inconvenient replacement of the filter element

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