The filter bag fixed mechanism of pulse bag type dust collector
Technical field
The present invention relates to a kind of filter bag fixed mechanism of suction type pulse bag type dust collector, particularly a kind of pulse bag type dust collector.
Background technology
Existing large-scale row spray pulse bag type dust collector is the negative pressure operation, adopts the outside filtering type filter type, i.e. filter bag bottom sealing, and upper opening shrinks in the course of the work in order to prevent filter bag, and cage is housed in filter bag, is suspended on the card by block; The sack of filter bag adopts the snap ring interlocking in the card hole.The duty of pulse bag type dust collector is divided into filters and two kinds of deashings, when deduster when filtering, dusty gas is entered the air channel of deduster by the deduster air inlet, equal wind apparatus is assigned to each filter chamber equably with gas through the air channel, filter through filter bag from bottom to top then, dust is delayed at the outer surface of filter bag, and clean gas after filtering enters air-purifying chamber by the filter bag opening discharge and compiles the back discharge, finishes the filter process of dusty gas.When the dust layer thickness on filter bag surface acquires a certain degree, must carry out deashing to guarantee the required gas permeability of filter bag continuous firing to filter bag, pulse jet mechanism ejection this moment high pressure draught, filter bag is expanded, the dust on filter bag surface is shaken off to the ash bucket of below, realized deashing operation filter bag.
In the filtration of sack cleaner, deashing process, because the irregular of air-flow flowed, cause acutely rocking of cage and filter bag, particularly the bottom amplitude is bigger, causes the phase mutual friction between filter bag, has reduced service life; Especially when deduster filters, owing to filter bag is subjected to suction function, be in to be subjected to flat state, add the effect of ascending air, cage tends to be lifted, and has strengthened the folding amplitude of filter bag, has reduced service life, influences dust removing effects.Simultaneously, constantly rocking of filter bag and cage also caused the sedimentation that is difficult to of dust, prolonged the sedimentation time of dust, the dust particularly thin for particle, that viscosity is strong causes second adsorption easily, strengthen the load of deduster, influenced the normal operation of sack cleaner.
Summary of the invention
Technical problem to be solved by this invention is, at the deficiencies in the prior art, provide a kind of simple in structure, can prolong life of bag filter, improve the filter bag fixed mechanism of the pulse bag type dust collector of efficiency of dust collection.
The technical scheme that the present invention solves its technical problem is: comprise fixed mount, combined type acorn nut, packing ring and double-screw bolt.The rectangular frame of fixed mount for adopting shaped steel to be welded is placed on the block on row's cage top, and having some through holes around fixed mount is long kidney-shaped hole; Stud welding is fixed between the card hole of card, and its number is corresponding with the through hole around the fixed mount with the position.During installation, between the card hole of card, weld several double-screw bolts earlier, the fixed mount that will have through hole again passes on the block that double-screw bolt is placed in the cage top, each double-screw bolt all overlaps upper gasket, by on double-screw bolt, screwing the combined type acorn nut fixed mount is exerted pressure, thereby guaranteed the fixing of cage, also guaranteed the static relatively of filter bag.The use of combined type acorn nut has prevented that effectively dust from accumulating on the thread of double-screw bolt, produces wearing and tearing when avoiding dismantling, and damages thread, also makes staff's easy to disassemble and assemble when repair and maintenance.
The invention has the beneficial effects as follows: simple and reasonable, reduce cost of equipment maintenance, avoided the phase mutual friction between filter bag, prolonged the service life of filter bag, accelerate the sedimentation of dust simultaneously, improved efficiency of dust collection and dust removing effects, reduced the load of deduster, energy-saving effect is obvious, is specially adapted to handle the dust that particle is thin, viscosity is strong.
Description of drawings
Fig. 1 is a scheme of installation of the present invention;
Fig. 2 is Fig. 1 vertical view;
Fig. 3 is a structural representation of the present invention;
Fig. 4 is the structural representation of fixed mount among the present invention.
Among the figure: 1 is that card, 2 is that filter bag fixed mechanism, 2-1 are that fixed mount, 2-1-1 are that through hole, 2-2 are that combined type acorn nut, 2-3 are that packing ring, 2-4 are that double-screw bolt, 3 is that cage, 4 is filter bag.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Present embodiment comprises fixed mount 2-1, through hole 2-1-1, combined type acorn nut 2-2, packing ring 2-3 and double-screw bolt 2-4.The rectangular frame of fixed mount 2-1 for adopting shaped steel to be welded is placed on the block on row's cage 3 tops, and having some through hole 2-1-1 around fixed mount 2-1 is long kidney-shaped hole; Double-screw bolt 2-4 is weldingly fixed between the card hole of card 1, and its number is corresponding with the through hole 2-1-1 around the fixed mount 2-1 with the position.During installation, between the card hole of card 1, weld several double-screw bolts 2-4 earlier, the fixed mount 2-1 that will have through hole 2-1-1 again passes on the block that double-screw bolt 2-4 is placed in cage 3 tops, each double-screw bolt 2-4 all overlaps upper gasket 2-3, by on double-screw bolt 2-4, screwing combined type acorn nut 2-2 fixed mount 2-1 is exerted pressure, thereby guaranteed the fixing of cage 3, also guaranteed the static relatively of filter bag 4.Cage 3 and filter bag 4 do not produce when filtration, deashing and rock like this, have avoided filter bag 4 because of the phase mutual friction damages, and have prolonged the service life of filter bag 4, help the sedimentation of dust simultaneously yet, have improved the operating efficiency of sack cleaner.
The use of combined type acorn nut 2-2 has prevented that effectively dust from accumulating on the thread of double-screw bolt 2-4, produces wearing and tearing when avoiding dismantling, and damages thread, also makes staff's easy to disassemble and assemble when repair and maintenance.