CN103480210A

CN103480210A - Dust collector for energy-saving environment-friendly axial flow fan group

Info

Publication number: CN103480210A
Application number: CN201310469468.0A
Authority: CN
Inventors: 张建美; 吴一中
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-10-10
Filing date: 2013-10-10
Publication date: 2014-01-01

Abstract

A dust collector for an energy-saving environment-friendly axial flow fan group. A sidewall of a casing is equipped with an air-supply pipe, which directly penetrates into the casing; more than two air outlets are arranged on the end face of the casing; each air outlet is installed with an axial flow fan; the rotating shaft of each axial flow fan is provided with more than one impellers for generating high pressure effect through progressive increase of wind pressure of the fan; filter bags are arranged opposite to corresponding axial flow fans; the upper end of each filter bag is fixed on a separator plate with through holes in the casing; a dust bucket and a dust box are arranged below the filter bags corresponding to each axial flow fan; the separator plate and the air outlet keep a distance of 1-3 m, and the space above the separator plate forms a cleaning chamber; each axial flow fan runs in a process of forward rotation, stop, reverse rotation, stop and forward rotation; and the axial flow fans carry out cycling air-discharge and dedusting procedure in turns. The forward rotation induces air to dedust, the reverse rotation conducts back flushing ash removal with large air quantity, so as to substantially reduce filtering resistance and maintain the dust thickness in the filter bags within 0.5 mm for a long time, reduce power consumption for dedusting, thoroughly omit auxiliary facilities including a high pressure recoil pipe, a gas tank, a pulse valve and an air compressor, and realize a total energy saving of 70-80%.

Description

Energy-conserving and environment-protective axial flow blower group dust arrester

Technical field

The present invention relates to a kind of dust arrester, particularly a kind of energy-conserving and environment-protective axial flow blower group dust arrester that is widely used in big power consumers' uses such as metallurgy, chemical industry, iron and steel, steam power plant, cement, coking, chemical fertilizer, glass factory.

Background technology

Along with the reinforcement of people's environmental consciousness, people wish to improve air quality, reduce discharge and the haze weather of atmosphere pollution, and national environmental protection section, to each pollutant emission unit, has worked out discharge standard for this reason, also require time limit to carry out rectification.

Blower fan, deduster are all to implement the requisite components and parts of waste treatment project, but traditional dedusting fan mostly is centrifugal fan, because energy consumption is large and the blower fan effect is low, can not produce the high pressure effect.Therefore the dust stratification on filter bag of dust collector is many, reaches 2～5 millimeters.Air need first could arrive filter bag by behind the dust gap, has greatly increased the resistance of filtered air, have to increase fan capacity for reaching effective dedusting, thereby cause larger energy consumption.The pulsed dedusting that tradition adopts, also need the auxiliary equipment such as air compressor, air accumulator, pulse valve, the investment that has not only strengthened equipment has increased again energy consumption, and the power of air compressor is 8～30% of whole dust removal part general power, so more existing dust arresters do not reach the desired dust removing effects of national standard far away, more do not reach the required standard of ecocity.

Summary of the invention

Technical problem to be solved by this invention is: a kind of energy-conserving and environment-protective axial flow blower group dust arrester is provided, the big power consumer who is widely used in every profession and trade installs, the effect that not only improves blower fan also reduces filtration resistance greatly, good dedusting effect, not only reduce the input of auxiliary equipment fund but also greatly saved energy consumption and resource, reached the purpose of energy-saving and environmental protection.

The present invention addresses the above problem adopted technical scheme: energy-conserving and environment-protective axial flow blower group dust arrester, include blower fan, air inlet on casing, air outlet, the blast pipe that install at the air inlet place directly enters in casing, filter bag also is installed in casing, described box top has plural air outlet, the blower fan of installing at each air outlet place is axial flow blower, more than one impeller is installed in the rotating shaft of described axial flow blower, described filter bag is installed facing to corresponding axial flow blower, the upper end of each filter bag is fixed in casing on the dividing plate with through hole, the filter bag below is facing to the dirt bucket, the laying dust box, described each axial flow blower is by forward work, stop, reversion, stop, forward work again, air draft in turn circulates, the program work of dedusting.

Compared with prior art, the invention has the advantages that: because this dust arrester adopts axial flow blower, and two impellers are installed on motor shaft, the effect that makes blower fan is original centrifugal blower 4～6 times, both every degree electricity reached the dedusting air quantity of 1200～3000 cubic metres, because increasing progressively its blast, the axial fan that has adopted impeller serial produces the high pressure effect in addition, and adopt the blower fan forward to work, stop, reversion, stop, the forward work air inducing that circulates in turn again, the dedusting working procedure, air inducing dedusting during forward, Wind Volume during reversion, the reverse gas cleaning dedusting, greatly reduce filtration resistance, make filter bag keep for a long time dust thickness in 0.5 millimeter, also greatly reduce the power that dedusting consumes, completely abolish the equipment of the high-voltage pulse dedusting of former use, these pulse jet bag dust collectors are all to take compressed air as power, make filter bag expand and cause impact shock suddenly, make the dust on filter bag surface defeated and dispersed and come off, fall into following dirt bucket, gas after filtration enters in atmosphere, but also need high pressure recoil tube and the auxiliary equipment such as air accumulator and pulse valve, now do not need this facility, not only reduce the input of equipment funds, also reduce the energy consumption of equipment, resource and energy consumption have greatly been saved, because blower fan is pressed cyclic program work in turn, guaranteed the automatic cycle dedusting, reach national dedusting discharge environmental protection standard, this apparatus structure is simple, easily make processing, casing is exactly a large cavity of filling filter bag, vertical uniform being arranged on each outer air outlet of casing of blower fan, be convenient to the reverse gas cleaning dedusting to filter bag, be convenient to not only heat radiation but also easy-maintaining, regulate, also energy-conservation, this installs total energy-saving and reaches 70～80%.

The accompanying drawing explanation

Fig. 1, structural representation of the present invention.

The A of Fig. 2, Fig. 1-A cutaway view.

The B of Fig. 3, Fig. 1-B cutaway view.

Fig. 4, Fig. 2 C place enlarged drawing.

The specific embodiment

Below in conjunction with accompanying drawing, embodiments of the invention are further described.

Casing 2 is complete large cavitys, and it is simple in structure, easily makes processing, and dividing plate is above is clean room, exhaust duct, and dividing plate is following is dirt pocket, and casing fixes on the ground by each bracing frame 6 of its lower end.

The casing upper surface has eight uniform air outlets, each air outlet place is screwed a Fans, on a sidewall of casing 2, in the middle of discharging air port, two of symmetry is welded and fixed a blast pipe 3, directly pass in the large chamber of casing 2, be, 1～3 meter away from casing top is welded and fixed the dividing plate 21 that through hole is arranged, bulkhead through-hole place at corresponding each blower fan is equipped with filter bag ring 7, its upper port has flange to be shelved on the through hole of dividing plate, the sack rope of each filter bag 8, rubber ring 9 is clamped on the ring groove on filter bag ring 7 outer surfaces, be convenient to transposing and the installation of filter bag, the filter bag 8 that under each blower fan, corresponding a branch of length is 5～8 meters, the corresponding funnel shaped dirt bucket 4 in filter bag 8 belows and laying dust box 5, eight blower fans are arranged as shown in Figure 1, eight bundle filter bags, eight dirt buckets.

Can be as required blower fan, dirt bucket, laying dust box, the filter bag of varying number.

Blower fan adopts the axial flow blower 1 of vertical installation, on the two ends of motor shaft 12, connect respectively, size, the identical or different impeller of shape, be that fan casing is the tubaeform impeller 11,13 Shang Xia two that is equipped with, or casing to be that identical impeller 13, two impellers of cylindrical installation two make blast increase progressively blast larger, assembling is convenient to fan radiating, consumption reduction, noise reduction outside casing 2, air inducing when the vertical installation of blower fan is convenient to over against each filter bag 8 forward, use Wind Volume blowback dedusting during reversion.

During use, casing 2 each outer axial flow blowers 1 are connected with the mains, start the outside air inducing of rotation work, by blast pipe 3, suck containing dust, the gas of contaminant particle, air-flow simultaneously, when volume is large, the particle of heavy weight constantly falls into dirt bucket 4 under the self gravitation effect, lighter dust dust under fan action is filtered outside filter bag 8, and the air after filtration enters in atmosphere the purpose that reaches dedusting.

At this moment each axial flow blower 1 can be under the control of programmable controller, blower fans all on casing is carried out just circulating in turn, reversion is controlled, as First blower fan forward after 30～35 minutes, stop 10～30 seconds, blowback is 10～30 seconds again, stop again 10～30 seconds, forward is 30～35 minutes again, constantly circulation, then after the First blower fan is separated by 3～4 minutes relatively, the second Fans started forward after 30～35 minutes, stop 10～30 seconds, blowback is 10～30 seconds again, stop again 10～30 seconds, forward is 30～35 minutes again, restarted after 3～4 minutes at relative the second Fans interval of the 3rd Fans, go down successively and constantly circulate in turn, reach automatic dust removing, and the dust thickness on each filter bag 8 is remained in 0.5 millimeter, guarantee that dust can penetrate filter bag smoothly, greatly reduce the resistance of filtered air, cause periodic duty in turn just is convenient to not shut down and can conveniently the dust in the laying dust box be discharged.

Former certain enterprise is used the main air blower of 800 kilowatts, again main dirt pocket is divided into to independently six chambers, existing we with 6 uniform 18.5 kilowatts, the axial flow blower of totally 111 kilowatts replaces former main air blower to use, also at the two ends of fan shaft, two impellers are installed, be used for increasing blast and produce the high pressure effect, and reversion back flushing type deashing 30 seconds, this enterprise is used half a year as a result, dust thickness on filter bag does not have to surpass the record of 0.5 millimeter, because of the existing air compressor of having cancelled, the high pressure anti-blowpipe, air accumulator, the auxiliary equipment such as pulse valve, contrast after tested the economize on electricity of this device and reach 80%.

This device adopts the dedusting method that filter bag is installed in casing, also can adopt the different dedusting methods such as electrostatic precipitation, wet dust removal as required.

Claims

1. an energy-conserving and environment-protective axial flow blower group dust arrester, include blower fan, air inlet on casing (2), air outlet, the blast pipe (3) that install at the air inlet place directly enters in casing (2), filter bag (8) also is installed in casing (2), it is characterized in that described casing (2) end face has plural air outlet, the blower fan of installing at each air outlet place is axial flow blower (1), more than one impeller is installed in the rotating shaft of described axial flow blower (1), described filter bag (8) is installed facing to corresponding axial flow blower (1), the upper end of each filter bag (8) is fixed in casing on the dividing plate (21) with through hole, the filter bag below is facing to dirt bucket (4), laying dust box (5), described each axial flow blower is by forward work, stop, reversion, stop, the forward work air draft that circulates in turn again, the dedusting program work.

2. energy-conserving and environment-protective axial flow blower group dust arrester according to claim 1, it is characterized in that described casing (2) is a complete large cavity, described dividing plate and air outlet spacing are 1～3 meter, dividing plate (21) is above is cleaning chamber, exhaust duct, dividing plate is following be dirt pocket, on a sidewall of casing, symmetrical two discharge the centres, air ports and be welded with blast pipes (3).

3. energy-conserving and environment-protective axial flow blower group dust arrester according to claim 1, it is characterized in that the vertical installation of described axial flow blower (1), in different size two upper and lower impellers (11,13) are installed respectively at the two ends of motor shaft (12) and are arranged in flaring casing or motor shaft (12) two ends are installed equirotal two impellers (13) and are arranged in columniform casing.

4. energy-conserving and environment-protective axial flow blower group dust arrester according to claim 1, it is characterized in that described each axial flow blower (1) forward 30～35 minutes, stop 10～30 seconds, reverse 10～30 seconds, stop 10～30 seconds, forward constantly circulation in 30～35 minutes again, second axial flow blower (1) First axial flow blower (1) interval relatively restarted after 3～4 minutes, restarted after 3～4 minutes at relative second the axial flow blower interval of the 3rd axial flow blower (1), the like the startup in 3～4 minutes that lags behind in turn.