Sheathed circular truncated cone type filter press

Abstract

A sheathed circular truncated conical filter press comprises an outer circular truncated conical sleeve (5), and an inner circular truncated conical sleeve (9) arranged at the middle part of the outer circular truncated conical sleeve (5). A filter press rubber sleeve (6) is arranged on the inner wall of the outer circular truncated conical sleeve (5). Small holes are evenly distributed on the inner circular truncated conical sleeve (9). Filter cloth (8) is arranged on the outer wall of the inner circular truncated conical sleeve (9). Air intake pipes (11) are arranged at two sides the wall of the outer circular truncated conical sleeve (5). An inner sleeve water outflow pipe (3) is arranged at the bottom of the inner circular truncated conical sleeve (9). A discharge plate (13) is arranged at the upper part of a circular truncated conical filter chamber (7). Multiple discharge holes (24) are provided in the discharge plate (13). A feeding pipe (15) entering the interior of the outer circular truncated conical sleeve (5) is arranged at one side of the upper cover (14), and high-pressure air intake pipes (18) entering the interior of the inner circular truncated conical sleeve (9) and the interior of the outer circular truncated conical sleeve (5) are arranged at the other side of the upper cover (14). A filter press water outflow pipe (1) connected to the inner sleeve water outflow pipe (3) is arranged on a bottom cover (4). The filter press dehydration is implemented by using high pressure air; fine coal grains are retained inside the circular truncated conical chamber and formed into filter cakes; the filter cakes are discharged when the bottom cover opens automatically. The whole filter press process is easy to implement, and has few maintenance and high efficiency; the solid-liquid separation effect is good; and the energy consumption is low.

Description

technical field [0001] The invention relates to a filter press, in particular to a table-mounted filter press applied to dehydration of fine-grained coal. It belongs to the application field of chemical industry, mineral processing and clean coal technology. Background technique [0002] At present, the dehydration of fine-grained coal at home and abroad is dominated by plate-frame / box-type filter presses. The structure is mainly composed of a square (or rectangular) metal (or synthetic material) frame covered with rubber plates and filter cloth. The problem is that the filter press The plate frame / box frame has poor pressure resistance, is easy to deform, and is easy to form phenomena such as running, popping, dripping, and leaking. As a result, the solid content of the filtrate is relatively high, and the moisture content of the filter cake is also high. At present, the tubular filter press that has just appeared has enhanced pressure resistance. Its structure is mainly c...

AI Technical Summary

Problems solved by technology

[0002] At present, the dehydration of fine-grained coal at home and abroad is dominated by plate-frame / box-type filter presses. The structure is mainly composed of a square (or rectangular) metal (or synthetic material) frame covered with rubber plates and filter cloth. The problem is that the filter press The plate frame / box frame has poor pressure resistance, is easy to deform, and is easy to form phenomena such as running, popping, dripping, and leaking. As a result, the solid content of the filtrate is relatively high, and the moisture content of the filter cake is also high

At present, the tubular filter press that has just appeared has enhanced pressure resistance. Its structure is mainly composed of two metal tubes of the same length, the inner and outer thickness, which are combined by the upper and lower covers. The outer wall of the inner tube is laid with filter cloth, and the inner wall of the outer tube is laid with rubber plates; However, the existing problem is that the inner tube and the lower cover are very heavy and need to be moved. After the filter cake is formed, it can only be unloaded by moving out of the outer tube; the connection between the inner tube and the upper and lower covers is easy to wear due to frequent movement; The role of the cake is very small, and the unloading is basically manual; it is easy to cause damage to the filter cloth; it cannot be produced efficiently and automatically; the filter cloth is not cleaned, which increases the resistance to reproduction

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