Foldable circulating water forebay flat plate filter screen and folding method thereof

Abstract

The invention belongs to the technical field of flat plate filtration, and particularly relates to a foldable circulating water forebay flat plate filter screen which comprises a plurality of filter screens, fixed frames fixedly connected are arranged on the outer sides of the filter screens, symmetrically distributed adjusting grooves are formed in the upper ends and the lower ends of the fixed frames, and the adjusting grooves are located in the same sides of the fixed frames. The section of each adjusting groove is concave, a movably-connected connecting net is arranged between every two adjacent fixed frames, a lifting chain is arranged in each adjusting groove, the bottom of each lifting chain is fixedly connected with the bottom of the filter screen at the bottommost portion, a plurality of lifting rings used for lifting the corresponding fixed frame are arranged on each lifting chain, and the length of each lifting ring is larger than that of the corresponding adjusting groove.The problems that a filter screen cannot be cleaned and cannot be lifted out for cleaning due to mechanical faults can be solved, the problems that the filter screen is lifted, spread and cleaned at alow speed are solved, and meanwhile the danger that an operator need to climb to a high place for operation is avoided.

Description

technical field [0001] The invention belongs to the field of flat filter technology, and in particular relates to a foldable flat filter net of a circulating water forebay and a folding method thereof. Background technique [0002] Every year from late April to mid-May, a large number of catkins and catkins will be produced. A large number of catkins and catkins will fall into the river and cooling tower and will be brought to the circulating water system of the power plant, which has brought great hidden dangers to the safe production of the power plant. . In this season, the power plant will organize personnel to continuously flush the forebay filter screen of the circulating water pump to prevent the interruption of circulating water and the tripping accident of the steam turbine generator set. [0003] At present, there are two kinds of circulating water pump forebay filters used in power plants: the first is the mechanical rotary filter, and its disadvantage is that th...

AI Technical Summary

Problems solved by technology

[0003] At present, there are two kinds of circulating water pump forebay filters used in power plants: the first is the mechanical rotary filter, and its disadvantage is that the mechanical rotary filter is not effective in cleaning catkins and catkins during the season when a large amount of catkins and poplar catkins are produced. Well, if the mechanical rotating filter screen fails to be cleaned once a mechanical failure occurs, the circulating water will be interrupted and the turbine generator set will be disassembled and tripped; It takes a long time to clean the whole process. If the blocked filter screen is not replaced in time, it will cause a tripping accident of the steam turbine generator set. The electric hoist above the flat filter screen is faulty, and the filter screen cannot be hoisted out for cleaning, which will also cause the interruption of circulating water and the tripping accident of the steam turbine generator set

Images