CN2644033Y - Wind power driven ash collecting mechanism of dust catcher - Google Patents

Abstract

The utility model discloses a pneumatic ash conveyer used for the ash convey of large cloth bag dust-catchers arranged on the metallurgy blast furnace, the mixer furnace or the converter powered by the wind. The ash and the dust enter a feed opening 17 after dedusting process of a plurality of dedusting boxes 19, pass through a tube 3 and come into a vertical tube 5(1) or 5(2). When the electric butterfly valve 2(1) or 2(2) is opened or closed, the blower 21 is started, and the ash or dust in the vertical tube 5(1) or 5(2) are mixed with the hot air coming from a hot air tube and then enter a through a three-way pipe 8, a bent pipe 9 and a bent head 10. The ash and the dust which do not condense the moisture undergoes catching in the roof dust-catcher 14 and, fall into the feeding cabinet and are added with appropriate amount of water for the next step of treatment. After cleaned, the air is discharged from the smoke tube 26. 70 to 80 percent of the investment is saved and the service period is lengthened by 3 to 4 times when the wind power cloth bag replaces the drag conveyer or the traditional wind power dust conveying device. The utility model does not pollute the environment and lengthens the preparation period, thus is able to be popularized in the metallurgy, the cement and other industries.

Description

The deduster pneumatic ash conveyer

Technical field the utility model relates to and a kind ofly is applied to metallurgy high furnace or mixed iron blast, converter etc. the flue dust ashes of dry bag-type dedusting is carried out the device that wind-force is carried, and belongs to the B08B15/00 class.

Background technology is in iron and steel metallurgy enterprise, flue dust to blast furnace, mixed iron blast or converter generally adopts dry bag-type dust collecting process and relevant device to collect, flue dust ashes after the collection adopts the scraper ash-transmission machine to be transported to the deposit storehouse of appointment, suitably adds to deliver to next procedure behind the water and handle.Adopting the disadvantage of scraper ash-transmission machine is that equipment investment is big, equipment failure rate is high, life cycle is short, and especially scraper plate chain bar is easily broken, and the scraper plate machine bottom board is easily worn out, maintenance load is big, and because poorly sealed dust leaks, work under hard conditions, influence the healthy of maintenance personal.

Summary of the invention task to be solved in the utility model provide a kind of rational in infrastructure, investment is lower, can reduce the long gas that utilizes of maintenance cost, life cycle carries the pneumatic ash conveyer of dedusting cigarette ash powder.

For finishing above-mentioned task, the technical solution adopted in the utility model is: remove former scraper ash-transmission machine and corresponding drive apparatus, keep the feed opening of former each sack cleaner taper ash bucket lower end.As required, sack cleaner can be positioned to many rows, and a plurality of dry bag-type dust remover casings can be installed on every row, and number can equate or be unequal.Adorn a trunnion in the lower end of each feed opening, after the circular flange dish is installed at two of trunnion, straight tube is installed again, forms a vertical ash pipeline of arranging deduster by a plurality of trunnions, ring flange and straight tube, and at an installation electric butterfly valve of the vertical ash pipeline of every row.Meet at the vertical ash pipeline of two-way is installed a three-way pipe, and the join dependency pipeline links to each other with roof scrubber, the port of export of this roof scrubber is connected with the entrance point of high-speed fan, cigarette ash after this roof scrubber dedusting is emitted by grey storehouse, and gas is discharged the (gas dustiness＜100mg/Nm of discharge by chimney ³).

Adopting as above, the major advantage of the deduster pneumatic ash conveying plant of technical scheme making is: 1. whole apparatus structure is reasonable, compact in design, and construction investment can save 70～80%; 2. can improve 4～5 times service life, save maintenance cost, prolong the plant maintenance cycle; 3. dedusting cigarette ash powder is all carried in pipe, and no dust exposes, and is free from environmental pollution, good operation conditions, and labour intensity is low.

Description of drawings

Fig. 1 is the pipe arrangement schematic diagram of the described deduster pneumatic ash conveyer of this case, and the F～F ' that is Fig. 2 also is a specification digest accompanying drawing of the present utility model to part figure.

Fig. 2 is that C～C ' of Fig. 1 is to partial schematic diagram.

Fig. 3 is the left-hand schematic diagram of Fig. 1.

The specific embodiment: the specific embodiment of the present utility model is described in further detail below in conjunction with accompanying drawing.

As shown in drawings, form row's deduster group, constitute a whole deduster by several groups of deduster groups by a plurality of deduster casings 19.Unloading valve and tremie pipe etc. are installed in taper feed bin lower end at each deduster casing 19, and this is a prior art.Unloading valve in the lower end of each deduster casing 19 connects circular flange dish 18 and links to each other with feed opening 17, and each feed opening 17 is connected with trunnion 3.Each deduster casing 19 below form a branch ash pipeline with trunnion 3, circular flange 4 and straight tube 5, by a plurality of minutes ash pipelines forms one vertically pipe 5 ' (this case is described to be two and vertically to manage 5 ' or 5 ").Vertically pipe 5 ' or 5 " connection electric butterfly valve 2 or 2 ' an end; and electric butterfly valve 2 or 2 ' the other end by a bend pipe and warm-air pipe 1 or 1 ' one be connected; warm-air pipe 1 or 1 ' the other end connect the taper storehouse of deduster casing 19; its objective is by warm-air pipe 1 or 1 ' with the hot blast that has 50～60 ℃ in the deduster casing 19 deliver to vertical pipe 5 ' or 5 ", make vertical pipe 5 ' or 5 " in dedusting tobacco powder dewfall not, be convenient to wind-force and carry.Vertical pipe 5 ' or 5 " fixing with support 16.Vertical pipe 5 " the other end be connected through elbow 6 one with transverse pipe 7, the other end of transverse pipe 7 connects a port of three-way pipe 8; Vertically pipe 5 ' the other end directly be connected with second port of three-way pipe 8, the 3rd port of three-way pipe 8 through bend pipe 9 and straight tube 9 ' after meet elbow 10, square flange 11, hemispherical dome 12 and spiral case 15 one and be connected, and the other end of spiral case 15 is looped around grey storehouse half cycle and inserts in the roof scrubber 14.Blower fan 21 (power is 30KW) is installed on next door at roof scrubber 14, and the entrance point of blower fan 21 connects of straight tube 25, and the other end of straight tube 25 connects the gas outlet end in roof scrubber 14 outsides.The port of export of blower fan 21 connects square flange 22, hemispherical dome 23 and elbow 24 backs and connects exhaust chimney 26, the top of exhaust chimney 26 is higher than deduster casing 19 and adds a bonnet on the top, available rope rope is fixing with exhaust chimney 26 simultaneously, and the lower end of exhaust chimney 26 is fixed on the chimney base 13.

During use, if simultaneously to vertical pipe 5 ' or 5 " in dedusting cigarette ash powder carry out wind-force and carry, after starting blower fan 21, open simultaneously electric butterfly valve 2 or 2 '; Also can be to two vertical pipes 5 ' or 5 " independently carry out the conveying of dedusting cigarette ash powder wind-force.Carry as only vertical pipe 5 ' interior dedusting cigarette ash powder being carried out wind-force, then open vertical pipe 5 ' last feed opening 17 that is connected with trunnion 3 earlier, open electric butterfly valve 2 again, close electric butterfly valve 2 ', start blower fan 21, vertically manage 5 ' interior mix with the dedusting cigarette ash powder that from each deduster casing 19 come out from the hot blast of warm-air pipe 1 this moment.Because the draft of blower fan 21, all dedusting cigarette ash powder that enter vertical pipe 5 ' interior through three-way pipe 8, bend pipe 9, straight tube 9 ', in the elbow 10 laggard top dedusters 14 that put in storage, the dedusting tobacco powder dirt that enters roof scrubber 14 carries out dedusting in roof scrubber 14, cigarette ash powder after dedusting falls into the feed bin of roof scrubber 14 belows, suitably adds to enter that next procedure is handled behind the water or utilize; Gas is extracted out through straight tube 25 by blower fan 21 in roof scrubber 14, is entered in the atmosphere by chimney 26 again.Owing to passed through the udst separation processing,, meet country's discharging fiducial mark so the dustiness that enters in the gas the atmosphere from chimney 26 is low.If need to vertical pipe 5 " in dedusting tobacco powder handle; then open electric butterfly valve 2 '; close electric butterfly valve 2; this moment from the hot blast of deduster casing 19 through the vertical pipe 5 of warm-air pipe 1 ' enter ", the hot blast band vertically pipe 5 " in dedusting cigarette ash powder through elbow 6, transverse pipe 7 and three-way pipe 8, bend pipe 9, straight tube 9 ', the elbow 10 laggard top dedusters 14 that put in storage carry out dedusting; the dedusting cigarette ash powder after the dedusting falls into the below feed bin of roof scrubber 14 and handles, and gas is discharged by chimney 26.

Claims (1)

1, a kind of deduster pneumatic ash conveyer, unloading valve in deduster casing (19) lower end connects circular flange dish (18) and feed opening (17), it is characterized in that: feed opening (17) is connected with trunnion (3), trunnion (3), circular flange (4), straight tube (5) is formed and is divided ash pipeline, form vertically pipe (5 ') by a minute ash pipeline, (5 "); vertically manage (5 '); (a connection electric butterfly valve (2) of 5 ") or an end of (2 '), the other end of electric butterfly valve (2) or (2 ') is connected by bend pipe with warm-air pipe (1) or (1 '), and the other end of warm-air pipe (1) or (1 ') connects the taper logical sequence of deduster casing (19); Vertical pipe (5 ') or (5 ") are fixing with support (16); vertically (other end of 5 ") is connected through elbow (6) with transverse pipe (7) pipe, the other end of transverse pipe (7) connects a port of three-way pipe (8), vertically the other end of pipe (5 ') directly is connected with second port of three-way pipe (8), the 3rd port of three-way pipe (8) is through bend pipe (9), connect elbow (10) behind the straight tube (9 '), square flange (11), one of hemispherical dome (12) and spiral case (15) is connected, and the other end of spiral case (15) is looped around the half cycle in grey storehouse and inserts in the roof scrubber (14); At the other blower fan (21) of installing of roof scrubber (14), the entrance point of blower fan (21) connects of straight tube (25), the other end of straight tube (25) connects the gas outlet end in roof scrubber (14) outside, and the port of export of blower fan (21) connects square flange (22), hemispherical dome (23) and elbow (24) back and connects exhaust chimney (26).

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