摘要:
The filtering vessel (1) holding cartridge filter (16) is connected to a receiver (3) through a quick-opening valve. There is generated an underpressure in (3) for separating the filter cake built up on the cartridges, said underpressure being lower than the evaporation pressure of the liquid contained in the filter cake. Accordingly, there is built up an overpressure in the filtering vessel (1). An immediate opening of the valve (2) and a proportionate temperature in system (1) and (2) results in a spontaneous bursting off of the filter cake from the cartridge surface, which bursting off, in consequence of the pressure compensation between (1) and (3) still will be increased by means of the liquid contained in the filter cake evaporating in the course of a flash procedure. The relatively dry filter cake is collected in the receiver (3). The next filtration process can be started after closing valve (2).
摘要:
In a filter pressure container provided with a plurality of vertically suspended tube-like filter elements having a filter cloth thereon the filtration of residual volumes of a liquid being filtered and the rinsing-out of the filter cakes built up during the filtration on the filter cloth are carried out by pumping out of the residual liquid or the rinsing liquid from the container by pump into an injector mounted in the container above the filter elements. The injector sprays out the residual liquid or the washing liquid over the filter elements while a pressure gas or air is simultaneously supplied into the container to force the liquid mist through the filter elements.
摘要:
A pressure filter utilizes a vibratory impactor for imparting vertically directed high frequency shock waves to a rigid manifold from which a plurality of rigid filter tubes incorporate a fine mesh sleeve held tightly by spaced elastic bands against a unitary plastic core having inner and outer tubes interconnected by integral web portions.
摘要:
A backwashing alluvial filter has a vertical filter container, a plurality of collecting pipes removably mounted in the container, a plurality of filter elements suspended on the collecting pipes, separating walls subdividing the interior of the filter container into at least two chambers, and communicating with one another via vertical overflow shafts. Washing off of solid matter is performed by supplying a washing liquid via pipes directly under the overflow shafts.
摘要:
The exhaust manifold in a pressure filter is spring mounted and vibrated along a vertical axis to dislodge filter cakes from filter tubes suspended from the manifold.
摘要:
In a pressure filter for liquid media a plurality of filter elements is supported by a removable hollow cross bar which, when the filter tank is opened, can be removed together with all or groups of the filter elements. The filter element has a flexible filter wall and preferably an outer fine meshed wall and an inner coarse meshed wall.Between the two wall portions a packing material is arranged. Preferably the entire filter element is a flexible tube element. Spray tubes are arranged in the filter tank which are also removable together with their supporting carrier member. The spray elements serve to rinse out the filter cake. This may be done by passing the rinsing agent successively at spaced time periods through individual groups of the filter elements.
摘要:
A system for filtering thick liquids includes a filter tank having a relatively tall filter chamber and a plurality of filter elements mounted in the upper portion of the chamber. Filter cake built up on the filter elements is dislodged from all of the filter elements simultaneously for cleaning purposes, whereby the dislodged filter cake falls to the lower portion of the chamber and is removed from a discharge port at the lower portion of the chamber. A density detector controls a valve for the discharge port so that when the density of the liquid in the tank increases beyond a predetermined level, the discharge port is automatically opened, and then automatically closed when the density falls below a predetermined level.
摘要:
A filter device for preventing the overfill of filter elements with filter cake includes a filter housing and filtrate collection tubes. Sensors for measuring force are provided within the filter housing. The sensors are arranged over the filter elements at the closed end of the filtrate collection tubes. Detected changes in force by the sensors provide an indication of an increasing cake buildup.
摘要:
A fluid treatment assembly defines a treatment chamber and includes a treatment sub assembly positioned in an assembled condition in the treatment chamber. The treatment sub assembly includes a plurality of treatment members. The treatment assembly is arranged so that in use a fluid for treatment flows through the treatment members.
摘要:
The invention relates to a device for polishing hard surfaces, especially glass surfaces, said device comprising polishing system (5) provided with a replaceable polishing disk (6). Said polishing system (5) can be displaced in a two-dimensional manner by means of a displacement device (10) comprising a holding element (11) for the polishing system (5), and guiding elements (12, 18; 20, 25) for displacing the holding element (11) in XY directions. The inventive device enables hard surfaces to be repaired in a simple and precise manner.