Liquid purification or separation – Sectional chamber press type – With residue removal or liquid agitation
Patent
1987-04-08
1989-06-27
Jones, W. Gary
Liquid purification or separation
Sectional chamber press type
With residue removal or liquid agitation
210227, 210231, 100115, 100198, 100199, B01D 2512
Patent
active
048427330
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a filter press, and more particularly, to an improvement of filter plates of the filter press.
BACKGROUND OF THE INVENTION
Filter plates of a filter press, having various structures are known in the art. A filter press shown in FIG. 35 is one of the known structures in which a filtrate drainage guide member 60b or a filtrate floor, for receiving a filtrate passing through a filter cloth and subsequently guiding it downwards, is formed in integration with a rectangular frame 60a and many recesses 60c, . . . , 60c are formed on both faces of the filtrate drainage guide member 60b, whereby the filtrate which has passed through the filter cloth flows down smoothly.
According to the above-described structure, however, the filtrate drainage guide member is integrally fixed to the frame, and further, these members are all rigid bodies, so that when there arises a large difference in pressure between one face and the other face of each filter plate during a filtration process, the filtrate drainage guide member is liable to deform against the frame, which may lead to breakage of the filtrate drainage guide member.
It is an object of the present invention to provide a filter press in which a filtrate drainage guide member is prevented from being broken when pressure applied to one face of a filter plate is much different from that applied to the other face. In accordance with this construction, the above-described disadvantage can be solved.
SUMMARY OF THE INVENTION
In accomplishing these and other objects, according to the present invention, there is provided a filter press which is constructed such that a frame is formed separately from a filtrate drainage guide member; that is, a filter plate comprises a frame which forms a closed loop, a flat filtrate drainage guide means is disposed in the frame, and a support means for movably supporting the filtrate drainage guide means is provided in the frame.
The advantages obtained by this construction are as follows: Firstly, the above-described construction permits the filtrate drainage guide means to move in the frame independently or in unison with a filter cloth even if the pressure applied to one face of the drainage guide means is much different from the pressure applied to the other face, thereby eliminating fthe possibility of breakage of the filtrate drainage guide means.
Furthermore, the construction facilitates replacement of the filtrate drainage means against the frame. Still further, a replacement of a filtrate drainage guide means with a filtrate drainage guide means of a different thickness can vary the dimension of a filter chamber formed between the filtrate drainage guide means, a filter plate and a filtrate drainage guide means in a neighboring filter plate depending on the property of a raw liquid which is to be filtered, thus facilitating an adjustment of the percentage of water content contained in a filter residue. Still further, the configuration and width provided with a filtrate drainage guide means can be varied by replacing the filtrate drainage guide means with a filtrate drainage guide means of a different configuration and width depending on a property of a raw liquid which is to be filtered. Still further, a material which is used for the frame can be differentiated from that which is used for the filtrate drainage guide means, so that a highly rigid material can be selected for the frame, while the material for the filtrate drainage guide means can be most appropriately selected for a raw liquid which is to be filtered. Still further, light filter plates can be provided and accordingly the energy which is generated by a filter plate-driving unit can be reduced by using a material lighter than that which is used for the frame. Still further, since the frame and filtrate drainage guide means can be separated, it is easy to carry the filter plates, and the filter press can be operated by replacing only the filtrate drainage guide means if the filtrate drainage guide means is br
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patent: 2845181 (1958-07-01), Rathe et al.
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patent: 3289845 (1966-12-01), Weber
patent: 3347383 (1967-10-01), Augerot
patent: 3503326 (1970-03-01), Juhasz et al.
patent: 4194977 (1980-03-01), Kubota et al.
patent: 4491519 (1985-01-01), Kurita
patent: 4608164 (1986-08-01), Neu
Jones W. Gary
Kurita Machinery Manufacturing Company Ltd.
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