CN106334382A

CN106334382A - Negative pressure type low-pressure pulse cloth bag dust collector for processing boiler smoke

Info

Publication number: CN106334382A
Application number: CN201510397718.3A
Authority: CN
Inventors: 金世贵; 许蒙
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-07-07
Filing date: 2015-07-07
Publication date: 2017-01-18

Abstract

The invention relates to a negative pressure type low-pressure pulse cloth bag dust collector for processing boiler smoke, which belongs to the technical field of smoke processing. The dust collector comprises an air inlet duct, an air-outlet duct, a gas purifying case, a dust filtration system, a pulse blowing ash removal system, an ash-storing ash-discharging system, and a flow deflector, the flow deflector is positioned over the air inlet duct, the dust filtration system is composed of a filter bag, a tube nest for installing the filter bag and a bag cage for supporting the filter bag; the gas purifying case is positioned over the filter bag, the ash-storing ash-discharging system is composed of an ash bucket and a cinder valve and is positioned below the filter bag, the pulse blowing ash removal system is composed of an electro-magnetic pulse valve, a gas bag, a cylinder poppet valve, a blowing pipe and a blowing port, the blowing port is downwardly aligned to a filter bag port. The dust collector has a reasonable design, by adding the flow deflector over the air inlet duct, the dust-containing gas downwardly flows, then upwardly flows, so that the dust-containing gas is fully contacted with the filter bag under negative pressure effect, an ideal filtering effect is reached, and the dust of the filter bag can be conveniently removed by the pulse blowing ash removal system.

Description

A kind of negative-pressure type action of low-voltage pulse bag-type dust collector processing boiler smoke

Technical field

The present invention relates to smoke gas treatment technical field, especially a kind of negative-pressure type action of low-voltage pulse bag-type dust collector processing boiler smoke.

Background technology

Bag-type dust has significant progress in terms of body, filtrate, automatic control and accessory in recent years, and explores a series of safe operation behaves, to low-resistance, efficiently, multi items, multi-functional, low emission, long-life, maximization direction develop.Constantly become tight due to standard limit of smog release, have increasing application trend in industries such as smelting, iron and steel, electric power, building materials.

Bag pulse dedusting device not only has that deashing ability is strong, efficiency of dust collection is high, the low feature of concentration of emission, also has that stable and reliable operation, air consumption be low, little specially the taking of floor space, is particularly suitable for the occasion of Wind Volume flue gas.In actual motion, due to dedusting industry development speed quickly, the design level of each enterprise is uneven, in addition the foreign technology that bag-type dust collector is quoted mostly, limited by raw material, production technology, operation level, expose some design defect that such dust arrester exists, have impact on the normal operation of bag-type dust collector.

Mostly adopt malleation deashing dust-collecting equipment of reverse absorption on ferroalloy smelting stove at present, if dust arrester structure or filter bag design are improper, dust arrester usually occur and runs unstable, faults frequent, many defects such as construction short life.

Content of the invention

The technical problem to be solved in the present invention is to provide that a kind of structure is simple, the negative-pressure type action of low-voltage pulse bag-type dust collector of good dedusting effect, long service life.

For solving above-mentioned technical problem, the technical scheme is that

A kind of negative-pressure type action of low-voltage pulse bag-type dust collector processing boiler smoke, including intake air way, exhaust passage, Gas-cleaning box, dust filtering system, pulse jetting deashing system, the grey ash discharging system of storage and deflector, deflector is located above intake air way；Card that dust filtering system by filter bag, installs filter bag and support the bag cage of filter bag and form；Gas-cleaning box is located above filter bag；The grey ash discharging system of storage is made up of ash bucket and unloading valve, below filter bag；Pulse jetting deashing system is made up of electromagnetic impulse valve, gas bag, air cylinder lifting valve, injection tube and injection mouth, and wherein injection mouth is directed at downwards filter pocket mouths.

Described deflector is more than 500mm with the spacing of described card.

Described ash bucket is V-shaped, and base angle scope is 60 degree to 70 degree.

Described electromagnetic impulse valve is type submerged electromagnetic pulse valve, is directly installed on gas bag.

Described filter pocket mouths are provided with protective case.

The present invention passes through appropriate design, sets up deflector, guiding dusty gas flows downward, and then turns back upwards so that dusty gas is fully contacted with filter bag in the presence of negative pressure, reaches preferable filter effect above intake air way；The dust of filter bag can easily be removed by pulse jetting deashing system.

Brief description

Fig. 1 is the structural representation of the present invention.

Fig. 2 is the square air tank schematic diagram of the specific embodiment of the invention.

Fig. 3 is the circular gas bag schematic diagram of the specific embodiment of the invention.

Fig. 4 is arranged on the schematic diagram at Gas-cleaning box top for gas bag of the present invention.

Fig. 5 is arranged on the schematic diagram of Gas-cleaning box sidepiece for gas bag of the present invention.

Fig. 6 is filter pocket mouths protective case schematic diagram of the present invention.

1- Gas-cleaning box；2- injection tube；3- is blown mouth；4- electromagnetic impulse valve；5- air cylinder lifting valve；6- card；7- exhaust passage；8- deflector；9- intake air way；10- ash bucket；11- unloading valve；12- filter bag；13- gas bag.

Specific embodiment

With reference to the accompanying drawings and detailed description, the present invention is further described.

A kind of negative-pressure type action of low-voltage pulse bag-type dust collector processing boiler smoke, as Figure 1-3, including intake air way 9, exhaust passage 7, Gas-cleaning box 1, dust filtering system, pulse jetting deashing system, the grey ash discharging system of storage, also include deflector 8, deflector 8 is located above intake air way 9.The card 6 that dust filtering system by filter bag 12, installs filter bag and the bag cage of support filter bag form；Gas-cleaning box 1 is located above filter bag 12；The grey ash discharging system of storage is made up of ash bucket 10 and unloading valve 11, below filter bag 12；Pulse jetting deashing system is made up of electromagnetic impulse valve 4, gas bag 13, air cylinder lifting valve 5, injection tube 2 and injection mouth 3, and wherein injection mouth 3 is directed at downwards filter pocket mouths.

The spacing of described deflector 8 and described card 6 is more than 500mm it is ensured that equal wind, prevents that local resistance is too big, causes Gas-cleaning box 1 choke-out kept to the side, actual not situation in working order.

Described ash bucket 10 is V-shaped, and base angle scope is 60 degree to 70 degree.For the roomy ash bucket in surface 10, also internal stay should be added inside ash bucket 10, and cushioning plate between internal stay and ash bucket 10, it is to avoid internal stay acts directly on ash bucket 10, bursts ash bucket 10 in the case of high negative pressure；Internal stay needs to do accumulatingdust process, typically does internal stay using pipe.

Described electromagnetic impulse valve 4 is type submerged electromagnetic pulse valve, is directly installed on gas bag 13.Gas bag 13 can be with square air tank or circular gas bag, with reference to Fig. 2 and Fig. 3.

Gas bag 13 may be mounted at Gas-cleaning box top or Gas-cleaning box sidepiece, with reference to Fig. 4 and Fig. 5, wherein preferred gas bag mounting means shown in Fig. 5.Because filter bag can not be installed in the pocket space corresponding to gas bag bottom in the gas bag mounting means shown in Fig. 4, waste pocket space；In gas bag mounting means shown in Fig. 5, gas bag has been contained in the outside of pocket, is fully used in pocket space, and identical filter area steel consumption reduces, and the bent tube section of injection tube is exposed to outside air-purifying chamber, and construction and installation are more convenient.

Described filter pocket mouths are provided with protective case, and protective case can be built-in or external, as shown in Figure 6.Protective metal shell is placed in filter pocket mouths built-in sheath, have lost a part of filter area；External sheath, protective metal shell is placed in filter pocket mouths top it is ensured that the due filter area of filter bag.

The smoke filtration flow process of the present invention: dusty gas through intake air way 9 water conservancy diversion downwards, is then turned back upwards, entered into inside filter bag 12 through filter bag 12 by outside filter bag, and flow upwards out filter pocket mouths in the presence of negative pressure；During through filter bag 12, dust granules are retained by filter bag 12 filter layer, so that dusty gas is purified；After purified gas flows out filter pocket mouths, enter Gas-cleaning box 1, reach exhaust passage 7, entered in air by tail exhaust blower.

Claims

1. a kind of negative-pressure type action of low-voltage pulse bag-type dust collector processing boiler smoke, including intake air way, exhaust passage, Gas-cleaning box, dust filtering system, pulse jetting deashing system, the grey ash discharging system of storage, it is characterized in that: also include deflector, deflector is located above intake air way；Card that dust filtering system by filter bag, installs filter bag and support the bag cage of filter bag and form；Gas-cleaning box is located above filter bag；The grey ash discharging system of storage is made up of ash bucket and unloading valve, below filter bag；Pulse jetting deashing system is made up of electromagnetic impulse valve, gas bag, air cylinder lifting valve, injection tube and injection mouth, and wherein injection mouth is directed at downwards filter pocket mouths.

2. the negative-pressure type action of low-voltage pulse bag-type dust collector processing boiler smoke as claimed in claim 1 it is characterised in that: described deflector is more than 500mm with the spacing of described card.

3. as claimed in claim 1 process boiler smoke negative-pressure type action of low-voltage pulse bag-type dust collector it is characterised in that: described ash bucket be V-shaped, base angle scope be 60 degree to 70 degree.

4. as claimed in claim 1 process boiler smoke negative-pressure type action of low-voltage pulse bag-type dust collector it is characterised in that: described electromagnetic impulse valve be type submerged electromagnetic pulse valve, be directly installed on gas bag.

5. as claimed in claim 1 process boiler smoke negative-pressure type action of low-voltage pulse bag-type dust collector it is characterised in that: described filter pocket mouths are provided with protective case.