The utility model relates to a gas diverting mechanism, which is mainly used as a diverting gas cavity of a nitrogen filling device.
In the production of sterile powder injections, for easily oxidizable powders, nitrogen is required to be filled in the powder bottles to discharge the air in the bottles, and then sealed with rubber stoppers. Oxygen reacts with the medicinal powder to cause impurities in the medicinal powder, and the color grade of the medicinal powder will rise from the original color by several grades, and the final drug effect will be reduced, which will bring about unknown negative effects. Therefore, relying on the inertness of nitrogen to alleviate the change in the color level of the drug, thereby achieving the effect of improving the stability of the drug.
One of the nitrogen filling methods: after filling the medicine powder into a medicine bottle, it enters a nitrogen filling channel of a nitrogen filling device for nitrogen filling, and finally presses a rubber stopper. During the nitrogen filling process, in order to reduce the residual oxygen content as much as possible and prevent the powder from being blown out, nitrogen gas needs to be poured into the medicine bottle uniformly and slowly. Therefore, how to design a split inflation mechanism capable of ensuring that nitrogen is uniformly, stably, and slowly injected into a medicine bottle is a technical problem to be solved urgently in the art.
Technical realization elements:
The technical problem to be solved by the present utility model is to overcome the shortcomings of the prior art mentioned above and provide a shunting inflation mechanism.
The technical solution adopted by the present utility model to solve the above technical problems is: a shunting inflation mechanism, including: a gas distribution cover and an air cavity box, the gas distribution cover includes: a cover plate, an air inlet interface pipe and an air outlet pipe, and a plurality of air inlet interface pipes It is inserted and fixed on the cover plate, and the gas distribution pipe is horizontally fixedly connected to the bottom end of the air inlet pipe, and the two communicate with each other. A plurality of first-level gas distribution holes are symmetrically arranged on the pipe wall of the gas distribution pipe;
The air cavity box includes: a cavity structure surrounded by front, rear, left, right and bottom walls, the top of the air cavity box is an opening, the cover plate is covered by the opening, and the air manifold is located in the middle of the cavity of the air cavity box. The bottom surface of the air cavity box is provided with a row of secondary air distribution holes;
A gas inlet channel, a gas distribution pipe and a primary gas distribution hole constitute a primary gas distribution channel, and a primary gas distribution hole, an air cavity box and a secondary gas distribution hole constitute a secondary gas distribution channel.
The front and back sides of the cover plate are bent downward to extend to form symmetrical folds, the folds cover the opening of the air cavity box, a positioning hole is opened at one end of the plate surface of the cover plate, and the openings of the air cavity box are located on the left and right sides. One side wall is provided with a threaded hole, and the second positioning screw is used to sequentially fix the insertion positioning hole and the threaded hole.
A U-shaped card slot is formed by inwardly folding the side of the folded edge at the other end of the cover plate, and protruding card posts are arranged on the front and rear walls of the other side of the air cavity box, and the U-shaped card slot is sleeved on the card post. .
The side wall of the air cavity box near the end of the nitrogen-filled channel is arranged obliquely, and the angle with the horizontal plane is 32 °.
The two ends of the pipe body of the gas separation pipe are sealed with a second screw.
A fixed bracket is provided on one side of the air cavity box.
Six air inlet ports are arranged in a row at equal intervals, and six closely arranged primary air vents form a group, and the bottom end of one air inlet port corresponds to a group of primary air vents in front and back.
Thirty-nine secondary air vents are equally spaced.
The diameter of the secondary air vent is half the diameter of the vial.
The air separating cover and the air cavity box are made of stainless steel 316 as a whole.
Compared with the prior art, the utility model has the beneficial effect that the utility model injects nitrogen into the medicine bottle uniformly and slowly through the two-stage gas separation channel, that is, the medicine powder in the medicine bottle is not blown out, and it can ensure Nitrogen enters the medicine bottle. After the rubber stopper is sealed, it is tested by a residual oxygen detector. The average residual oxygen content is below 0.5%, and the stable production rate is 224 bottles / minute.
BRIEF DESCRIPTION OF THE DRAWINGS
In order to explain the technical solution in the embodiment of the present invention more clearly, the drawings used in the description of the embodiment will be briefly introduced below, in which:
1 is a structural perspective view of a preferred embodiment of the present invention;
2 is a plan view of a structure of a preferred embodiment of the present invention;
3 is a cross-sectional view of the structure in the aa direction of FIG. 2.
The present invention will be further described below with reference to the drawings and specific embodiments. The terms such as "up", "down", "left", "right", "middle", and "one" cited in the preferred embodiment are only for the convenience of description and are not intended to limit the present invention. The scope of implementation, the change or adjustment of its relative relationship, without substantial changes in the technical content, should also be considered as the scope of implementation of the present invention.
Referring to FIGS. 1 to 3, a shunt inflation mechanism designed according to a preferred embodiment of the present invention mainly includes: a gas split cover 10 and an air cavity box 20, and the gas split cover 10 covers the air cavity box 20. Each component and connection relationship will be described in detail below.
The air distribution cover 10 includes: a cover plate 11, an air inlet pipe 12, and a gas distribution pipe 13. The cover plate 11 is a rectangular plate and is horizontally placed. Six air inlet pipes 12 are arranged in a row at equal intervals, and are welded and inserted. On the cover plate 11, the air distribution pipe 13 is horizontally fixedly connected to the bottom ends of the six air inlet pipe 12, and the two communicate with each other. On the pipe wall of the gas distribution pipe 13, a plurality of primary gas distribution holes 14 are symmetrically provided in the front and rear. Six closely arranged primary gas distribution holes 14 form a group, and the bottom end of an air inlet pipe 12 corresponds to one group in each of the front and rear. The graded air hole 14 is composed of a gas inlet interface pipe 12, a gaseous pipe 13, and a first-stage gaseous hole 14 to form a first-stage gaseous passage. The front and back sides of the cover plate 11 are bent downward to extend to form a symmetrical fold 15. One end of the cover plate 11 is provided with a positioning hole, and the side ends of the other end of the fold 15 are recessed inward to form a U-shaped slot 16. .
The air cavity box 20 includes: a cavity structure surrounded by front, rear, left, right and bottom walls. The top of the air cavity box 20 is an opening, and thirty-nine are provided at equal intervals on the bottom surface of the air cavity box 20.二 分 气孔 21. The secondary air holes 21. Threaded holes are provided on the left and right side walls of the opening of the air cavity box 20, and protruding posts 3 are provided on the front and rear walls of the other side opposite to the threaded holes.
The cover plate 11 covers the opening of the air cavity box 20, the flange 15 covers the outside of the opening, the U-shaped card slot 16 is sleeved on the card post 3, and the first positioning screw and the threaded hole are fixed in order, so that the The gas separation cover 10 is fixedly connected to the air cavity box 20. At this time, the gas separation tube 13 is located in the middle of the cavity of the air cavity box 20. The secondary gas separation channel is constituted by the primary gas distribution hole 14, the air cavity box 20 and the secondary gas distribution hole 21. After the nitrogen gas passes through the secondary gas distribution hole 21, it is continuously blown out and injected into the medicine bottle uniformly, stably, and slowly. Inside.
In actual use, for the use of a 15ml vial, the height of the medicine bottle is 52mm, the diameter of the bottle body is 24 ± 0.20mm, and the diameter of the bottle mouth is 12.6mm. In order to realize the replacement of the air in the vial by nitrogen, the diameter of the secondary air separation hole 21 is designed to be half of the diameter of the bottle mouth, that is, 6 mm. The medicine bottle is transported at a uniform speed from the secondary gas separation hole 21 at one end to the secondary gas separation hole 21 at the other end through a conveyor belt. At this time, the distance the medicine bottle has been inflated is called a nitrogen filling channel. Nitrogen channel. The length of the nitrogen-filled channel is 350mm and the width is 40mm. The side wall 22 of the air cavity box 20 is arranged obliquely near the end of the nitrogen-filled channel, and the angle between the side wall and the horizontal plane is 32 °. The stopper wheel mechanism enables the medicine bottle to be pressed immediately after passing through the nitrogen-filling channel to minimize the connection time in the non-inflated state.
As a preferred solution, the two ends of the pipe body of the gas separation pipe 13 are closed with a second screw 5, and the interior can be removed for cleaning.
As a preferred solution, the air separation cover 10 and the air cavity box 20 are made of stainless steel 316 as a whole, and are electrolytically polished.
As a preferred solution, a fixing bracket 23 is also provided on one side of the air cavity box 20, in order to facilitate the fixed installation of the mechanism.
This mechanism is a key component of the continuous nitrogen filling device, which can reduce the residual oxygen content in the sterile powder injection product after nitrogen filling from 3% to an average value of 0.5% or less. Medicine powder blows up. a. No mechanical transmission structure, maintenance-free, fast and easy installation using quick-release chucks and hoses; b. The material of the utility model has high compliance and no hygienic dead corners, and can be disassembled by removing the screws, which is convenient for disassembly , Cleaning, high temperature sterilization, in line with sterile pharmaceutical production standards.
The above are only the preferred embodiments of the present invention, and do not limit the form of the present invention in any form. Any person skilled in the art can make use of the technology of the present invention without departing from the scope of the technical solution of the present invention. Substantially any brief modification, equivalent change, and modification made to the above embodiments still fall within the scope of the technical solution of the present utility model.