Vacuum mixing injection molding system and method for membrane filter plate of filter press

Abstract

The invention relates to a vacuum mixing injection molding system and a vacuum mixing injection molding method for a membrane filter plate of a filter press, which can fundamentally eliminate air pockets in membranes and filter plates in an injection molding process of the membranes or the filter plates. A discharge port of an injection mold machine is communicated with a barrel body of a vacuum mixer through a feeding solenoid valve, and a control end of the feeding solenoid valve is connected with a signal output end of a controller; a spiral propelling mixer is positioned in the barrel body of the vacuum mixer, and is driven by a motor reducer positioned at the upper part the barrel body of the vacuum mixer to rotate, and a vacuum suction nozzle is communicated with a vacuum air extractor through an air path solenoid valve and an air pipe, and a control end of the air path solenoid valve is connected with the signal output end of the controller; a discharge port of the barrel body of the vacuum mixer is communicated with one end of a through way of a tee joint through the discharge solenoid valve, and the other end of the through way of the tee joint is communicated with a feed port of an injection mold in a butt joint way; and a middle way of the tee joint is communicated with the vacuum air extractor through the air path solenoid valve. The system and the method have the advantages that: the molding strength of the membranes or the filter plates is improved, and the rupture phenomenon does not occur when the membranes bulge and the filter plates are pressed.

Description

Technical field [0001] The invention relates to a filter press diaphragm filter plate vacuum stirring injection molding system and a vacuum stirring injection molding method which can fundamentally eliminate the air pockets in the diaphragm and filter plate during the injection molding process of the diaphragm or filter plate, belonging to the manufacturing of the diaphragm and filter plate injection molding system field. Background technique [0002] The existing injection molding system of the diaphragm or filter plate is: injection extrusion directly injects the plastic material into the diaphragm or filter plate forming mold, and the required diaphragm or filter plate is obtained after cooling and molding. Its shortcomings: because the injection molding machine is mixed with air when plastic particles are plasticized, and the air cannot be completely discharged during plastic plasticization, when it enters the diaphragm or filter plate mold for injection, it forms in the form...

AI Technical Summary

Problems solved by technology

Its shortcoming: because the injection molding machine is mixed with air when plasticizing plastic particles, and the air cannot be completely discharged during plasticizing, and when it enters the diaphragm or filter plate mold for injection molding, it will form in the formed diaphragm or filter plate. Cavitation, which not only directly leads to the reduction of the strength of the diaphragm or filter plate, but also causes the rupture of the diaphragm when the diaphragm is in the tympanic membrane, and the filter plate cracks or breaks when the filter plate is under pressure

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