A diaphragm filter plate with a structure of synchronous discharge of light and dark flow

Abstract

The invention relates to a diaphragm filtering plate with a shading stream synchronous liquid outlet structure. The diaphragm filtering plate comprises a filtering plate with a feeding hole in the middle and diaphragm pieces arranged on the front and rear of the filtering plate, wherein the lower parts of the front and rear of the filtering plate are both symmetrically provided with a first liquid outlet sulcule and a second liquid outlet sulcule, and two corners of the lower part of the filtering plate are both provided with liquid outlet through holes; the bottom surfaces of liquid outlet straight grooves communicated with the bottom of the first liquid outlet sulcule are provided with multiple communicating holes, and the communicating holes are all communicated with the two liquid outlet straight grooves formed in the front and rear of the filtering plate; liquid outlet holes are communicated with mounting holes of liquid outlet water nozzles which are spirally connected with the side surface of the filtering plate, and the tail ends of the liquid outlet holes are successively communicated with each through hole; the bottom surfaces of liquid outlet grooves communicated with the bottom of the second liquid outlet sulcule are provided with multiple inclined through holes, and the inclined through holes which are symmetrically formed in the front and rear of the filtering plate are communicated with the liquid outlet through holes. The diaphragm filtering plate provided by the invention has the advantages that the structure of the diaphragm filtering plate is simplified, the processing difficulty is reduced, the space occupation is reduced, the filter pressing quality and filter liquor discharging efficiency are effectively improved, and the moisture content of a filter cake is reduced.

Description

technical field [0001] The invention relates to a filter with a structure of synchronous discharge of light and dark flow, which can effectively improve the discharge efficiency of the filtrate of the diaphragm filter plate, ensure the smooth flow of the filtrate, effectively simplify the structure of the diaphragm filter plate, and reduce the difficulty of processing. A membrane filter plate belongs to the field of membrane filter plate manufacturing. Background technique [0002] The diaphragm filter plate is the main filter element of the filter press. The material enters the filter chamber through the central feeding hole of the diaphragm filter plate through the pressure of the feed pump, and the particles in the material are intercepted by the filter cloth in the filter chamber. Under the action of water and other pressing media, the diaphragm bulges, and the filter cake is squeezed, and the filtrate flows out from the liquid outlet on the diaphragm filter plate. The ...

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Problems solved by technology

CN202569693U discloses a dual-purpose drainage device for open and dark flow of a filter press, two corners of the lower side of the filter plate are provided with filtrate outlets, and each filtrate outlet is communicated with the liquid outlet main pipe through a hose, and the lower side of the filter plate is provided with The liquid outlet slot is connected to the confluence channel, and one end of the confluence channel is connected to the filtrate outlet, and the filtrate flows to the filtrate outlet and then flows into the liquid outlet main pipe. Although the smooth flow and collection of the filtrate are ensured, the structure of the device is in the filter plate There are liquid outlet main pipes and hoses on both sides, which need to occupy a large space and expand the volume of the overall filter press

CN2560413Y discloses a filter plate and a diaphragm pressing filter plate. There are oblique holes above the filtrate holes on the filter plate, and several small through holes are opened on the side walls of the oblique holes. The oblique holes and the filtrate holes can be connected or connected. Not connected, the filter plate of the liquid outlet structure will leave a processing hole on the side of the filter plate when processing the inclined hole, and a special sealing plug is required to seal the retained processing hole, and it needs to be replaced frequently to ensure the tightness , which not only increases the processing cost, but also buries a hidden danger to the quality of the filter plate; and when the filtrate flows through the inclined hole, due to the influence of the gravity of the filtrate, the flow speed of the filtrate is greatly hindered, the fluidity of the filtrate is poor, and the liquid exits not effectively

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