CN201889106U - Mechanical squeezing filter plate of squeeze filter press - Google Patents

Abstract

Disclosed is a mechanical squeezing filter plate of a squeeze filter press, which comprises plate frames and a variable filter chamber. The mechanical squeezing filter plate is characterized in that the filter plate is composed of a filtering plate frame and a squeezing plate frame, an elastic rubber hose is arranged between the two plates, the elastic rubber hose can be filled with pressure or can be stressed by pressure from outside, and the elasticity is adjustable. The volume of the filter chamber can be changed by the pushing of the squeezing plate frame; and the oil cylinder assembly provides mechanical force for the squeezing impetus of the squeezing plate frame. The mechanical squeezing filter plate has the advantages that the filter plate adopts a dual plate frame variable filter chamber, the compression ratio of a filter cake is increased, the squeezing impetus is provided through the oil cylinder assembly, so that the squeezing pressure of the filter cake increased several times over; the confining force of the filter plate increases along with the squeezing impetus through the using of the elastic rubber hose. By adopting the structure, the mechanical squeezing of the filter cake is realized; compared with the existing filter plate, the moisture content of the filter cake is obviously decreased.

Description

A kind of mechanical expression filter plate that squeezes filter press

Technical field

The utility model relates to the filter press filter board of solid-liquid separation field, particularly the mechanical expression filter plate of the squeezing filter press of industry and environmental protection industry (epi) use.

Background technology

At present the filter press filter board that uses at industry, environmental protection industry (epi) has two kinds of sheet frame filter plate and membrane filter plates.The sheet frame filter plate of filter press is fixing filter chamber, and its operation principle is by the compression pump supporting with it filtrate to be pressed into filter chamber, and moisture is by the discharge of the filter cloth in the filter chamber, and solid material is trapped within and forms filter cake on the filter cloth.The water content of pressure-filtering process filter cake and the pressure of compression pump are inversely proportional to, so filter cake is moisture higher relatively.The membrane filter plate of filter press is variable filter chamber, and its operation principle is after pressure-filtering process, by pressurising reduces chamber space to the filter plate barrier film, realizes the squeezing to filter cake.The water content of expressing process filter cake can further reduce, but still can not satisfy the requirement of many industries.

Existing filter press and filter-plate structure determined pressure-filtering process for slurry pressure can not be too high, the expressing process membrane filter plate is less to the compression ratio and the pressure of filter cake, has therefore restricted the reduction of filter cake moisture content.

Summary of the invention

The utility model is at the problems referred to above, and squeezing filter press particularly industrial for filter press and that environmental protection industry (epi) is had relatively high expectations to dehydration provides a kind of mechanical expression filter plate.

The technical solution adopted in the utility model is: the variable filter chamber of filter plate by the press filtration sheet frame and the squeezing sheet frame constitute, the press filtration sheet frame and the squeezing sheet frame between radial fit, be axially arranged with corresponding displacement; Between press filtration sheet frame and the squeezing sheet frame Elastic rubber duct is housed, can changes with filter chamber and make corresponding deformation and the filter plate seal force is changed with squeeze force; Elastic rubber duct be distributed on the filter plate periphery can in fill or impressed pressure, sebific duct elastic force can be looked operation to be needed to adjust.Promote the squeezing sheet frame and can change the filter chamber size, the squeezing motive force of squeezing sheet frame provides mechanical force by the hydraulic cylinder assembly of filter press.

The utility model has the advantages that: filter plate has adopted the variable filter chamber of two sheet frames, and the compression ratio of filter cake increases; Utilize hydraulic cylinder assembly that squeeze force is provided, filter cake squeezing pressure significantly improves; Use Elastic rubber duct, the filter plate seal force can increase with squeeze force.The particularly employing of these structures has realized the mechanical expression to filter cake, compares with existing filter plate, and the moisture content of filter cake obviously reduces

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the cutaway view of Fig. 1.

The specific embodiment

The utility model is described in further detail below in conjunction with embodiment.

Referring to Fig. 1, Fig. 2,

Filter plate (Fig. 1) is by squeezing sheet frame (1), press filtration sheet frame (2), Elastic rubber duct (3) formation.The squeezing sheet frame (1) with press filtration sheet frame (2) between radial clearance cooperate, be axially arranged with corresponding displacement (s), form variable filter chamber (4).Between squeezing sheet frame (1) and the press filtration sheet frame (2) Elastic rubber duct (3) is housed, when the pressurized of filter plate two sides, the elastic force of Elastic rubber duct (3) can reduce to squeeze drawing close of sheet frame (1) and press filtration sheet frame (2), thereby forms the seal force (a common filter press has 5-100 filter plate (Fig. 1) to work simultaneously) between filter plate (Fig. 1).

During filter press work, in the press filtration stage, hydraulic cylinder assembly provides the seal force between filter plate (Fig. 1), and compression pump is pressed into variable filter chamber (4) with filtrate through stock inlet (5), moisture is discharged by the filter cloth in the filter chamber, and solid material is held back by filter cloth and is full of variable filter chamber (4) formation filter cake; Enter the squeezing stage, hydraulic cylinder assembly provides the squeeze force greater than Elastic rubber duct (3) elastic force, promotes squeezing sheet frame (1) and draws close to press filtration sheet frame (2), and variable filter chamber (4) volume diminishes, and filter cake thickness diminishes, and moisture is extruded from filter cake.

Above embodiment illustrates of the present utility model; it or not restriction to the utility model protection domain; on the basis of described embodiment, multiple variation can be arranged; for example, Elastic rubber duct with solid, mounting spring, filter plate frame adopt other structures such as square between press filtration sheet frame and squeezing sheet frame.And so on, all have covered the variation of the described technical characterictic of claim and have been out of shape and have all belonged to protection domain of the present utility model.

Claims (2)

1. a mechanical expression filter plate that squeezes filter press comprises sheet frame filter plate and variable filter chamber, it is characterized in that: the variable filter chamber of filter plate is made of squeezing sheet frame and press filtration sheet frame, squeezes radial fit between sheet frame and the press filtration sheet frame, is axially arranged with corresponding displacement.

2. a kind of mechanical expression filter plate that squeezes filter press as claimed in claim 1 is characterized in that: between squeezing sheet frame and press filtration sheet frame Elastic rubber duct is housed, Elastic rubber duct is distributed on the filter plate periphery, can in fill or impressed pressure.

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