Plate filter press

Abstract

The invention provides a plate filter press and relates to the field of plate filter presses. The plate filter press comprises a plurality plate frames which is stacked along the horizontal directionin sequence, lugs are arranged on two sides of the plate frames, a straightness guiding rail is arranged on lower sides of the lug, and the plate frames can slide on the straightness guiding rail reciprocatingly; a hydraulic cylinder is arranged in the middle of one end of the straightness guiding rail, and the expansion direction of the hydraulic cylinder is perpendicular to the surfaces of the plate frames; grooves are arranged in upper sides of the plate frames; the plate filter press further comprises a linkage device which comprises positioning pins and linkage rods which are parallelly arranged along the vertical direction, a rotating rod is arranged at the upper end of each positioning pin, the lower end of the rotating rod is hinged with the upper end of each positioning pin, and two ends of the linkage rods are respectively hinged with upper ends of the rotating rods; the bottom of one positioning pin is inserted in one groove of each plate frame, and the bottom of the other positioning pin is inserted in the groove o the other neighboring plate frame. By the arrangement, filter residues are removed conveniently, labor intensity can be lowered, and working efficiency is improved.

Description

technical field [0001] The invention belongs to the field of plate filter presses, in particular to a plate filter press. Background technique [0002] Plate filter press is also plate and frame filter press, plate and frame filter press. The plate filter press has a large filtration area, a large flow rate, and a wide range of applications, so it is widely used in chemical and other industries. The plate filter press is made up of plates and frames arranged alternately. The two sides of the filter plate are covered with filter cloth, and the plate and frame are compressed with a pressing device, that is, a filter press chamber is formed between the plate and the frame. There is a small hole in the same part of the upper end of the plate and the frame. After being compressed, it becomes a channel. The sludge pressurized to 0.2-0.4MPa enters the filter chamber through this channel. The surface of the filter plate is engraved with grooves. There are holes for the filtrate to...

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Problems solved by technology

[0003] However, in the existing plate filter press, when the filter cake is cleared out after filtering, it is first necessary to loosen the pressing device, then manually separate the plate frame, and then clear the filter cake, which is not only labor-intensive, but also low in efficiency.

[0004] A patented plate filter press with buffer function, the application number is CN201520646910.7, which discloses a plate filter press, including a frame and a filter plate and a filter frame arranged on the frame, the filter plate and filter Frames are stacked alternately to form a group of filter units. Filter cloths are set on both sides of the filter plate. The frame is also equipped with a concentrated liquid inlet pipe, a clear night liquid outlet pipe and a concentrated liquid delivery pump. The concentrated liquid One end of the liquid inlet pipe communicates with the thick liquid delivery pump, and the other end communicates with the inner space of the filter frame. The clear liquid outlet pipe is the same as the inner space of the filter plate. device, the concentrated liquid inlet pipe communicates with the interior of the filter frame through a flexible joint I, and the clear liquid outlet pipe communicates with the inside of the filter plate through a flexible joint II; A buffer is also provided, and the buffer includes a barrel, and a spiral baffle is arranged inside the barrel; although this patent has high filtration accuracy, it still requires personnel to manually disassemble the filter unit and discharge the slag

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