CN2190521Y - Rhombus bag type dust collecter - Google Patents

Abstract

The utility model belongs to a rhombus bag type dust collector, being suitable for filtering airflow with dust in metallurgy, mining, chemical industry, etc. The rhombus bag type dust collector comprises a filter box, an ash bucket, a spiral ash conveyor, an ash unloading valve and an ash cleaning system. The utility model is characterized in that a filter bag inside the filter box forms the shape of a rhombus and contains conducting wire fiber, and an explosion-proof pressure release valve is also arranged on the filter box. Compared with the traditional flat and circular filter bags, the utility model increases the filter area arranged in a same unit space and saves steel materials as well as reduces the occupying space of equipment, having good explosion-proof performance and dust collecting effect.

Description

Rhombus bag type dust collecter

The utility model relates to a kind of dust-precipitator, especially the employed rhombus bag filters of industry such as metallurgy, mining, chemical industry.

At present, in industries such as metallurgy, mining and chemical industry, in the coal dust preparation system of especially metallurgical industry, the filter bag in the filter box of employed dust-precipitator mostly is flat or circle, and it is big to occupy the space, and dust collection effect is also undesirable.Used in addition filter pocket material does not have antistatic performance, does not have explosionproof hole on the filter box again, and is inflammable, explosive.

The purpose of this utility model is to provide a kind of and occupies that the space is little, dust collection effect good, and its filter bag has the rhombus bag filter that antistatic performance can not cause spark, have explosion-proof performance.

For achieving the above object, the utility model adopts following technical solution.This scheme is made up of filter box, ash bucket, auger conveyor, unloading valve and soot cleaning system.Described filter box is a cuboid, upper end four side welds of its four limits, bottom and ash bucket are connected together, the outside on four angles, the upper end of ash bucket and four limits also is welded with some in order to fixing supporting leg, and the bottom of ash bucket links to each other with auger conveyor, the following unloading valve that also is equipped with of this auger conveyor.Soot cleaning system comprises air-purifying chamber, blowback air channel, cylinder valve, platform, blower fan, flutter valve, pulse motor and gas circuit.Wherein, air-purifying chamber, blowback air channel, cylinder valve be successively set on filter box above; Platform is fixed on the side by the dust-precipitator air outlet, mounted thereto of blower fan, flutter valve, and pulse motor also is installed near above the blowback air channel of blower fan, flutter valve one side.Its design feature is, some rhombic filter bags that support with skeleton are housed in the cuboid filter box, and this filter bag is a chemical ﹠ blended fabric, includes conductive fiber, has antistatic performance; Wall is provided with some explosion-proof relief valves around the filter box.

Adopt above technical solution, have the following advantages and effect:

1, because the filter bag in the cuboid filter box is a rhombus, compare with flat, rounded pocket, the filter area of being arranged in same unit space greatly increases.For example in 3.1 cubic metres of spaces, the filter area of flat filter bag is about 34 square metres, and the filter area of rhombic filter bag can be up to 66 square metres.Both saved steel, the equipment that dwindled again takes up space.Improved dust-collecting efficiency greatly;

2, because filter box is provided with relief valve, has explosion-proof performance;

3, because rhombic filter bag is to make with the fabric that contains conductive fiber, can will lead away, prevent the spark because of causing in the electrostatic precipitator in the filter process effectively by the impact of dust and filtrate, fricative static.

Fig. 1 is a rhombus bag filter schematic diagram;

Fig. 2 is the interior rhombic filter bag schematic top plan view of cuboid filter box of Fig. 1.

The utility model is described in further detail below in conjunction with accompanying drawing.

With reference to Fig. 1, filter box 4 is a cuboid, and wall is provided with in order to blastproof some relief valves 17 around it, has air inlet 5 and air outlet 10 in its left and right sides.Four side welds in upper end of four limits, the lower end of this filter box 4 and ash bucket 7 are connected together.The outside on four angles, the upper end of ash bucket 7 and four limits is welded with some in order to the fixing supporting leg 6 of whole rhombus bag filter, and its lower end is equipped with auger conveyor 8 and unloading valve 9 successively.Be disposed with air-purifying chamber 3, blowback air channel 2 and some cylinder valves 1 above the filter box 4, platform 11 is fixed on the lateral wall by filter box 4 air outlets 10 1 sides, blower fan 12 and flutter valve 13 are installed on this platform 11,14 of pulse motors are contained in by above the blowback air channel 2 of platform 11 1 sides, also leave gas circuit 15 in the blowback air channel 2 below this pulse motor 14.

With reference to Fig. 2, rhombic filter bag 16 is arranged in the filter box 4, respectively is provided with support frame 18 in each bag of formation rhombic filter bag, forms rhombus so that make filter bag support the back.

With reference to Fig. 1, Fig. 2, dust-contained airflow enters from the air inlet 5 of dust-precipitator, deflector through setting within it enters ash bucket 7 downwards, big dust particle is impacted downwards, be subjected to the inertia force effect and be settled down in the ash bucket 7, fine dusts is folded to the top with air-flow and enters bag house, and dust is attached to the outer surface of rhombic filter bag 16, and the air that has been cleaned sees through filter bag and enters atmosphere through top air-purifying chamber, exhausting duct by the sucking-off of dust-precipitator main air blower.Along with the increase of running time of rhombus bag filter, the dust that is attached to rhombic filter bag 16 outer surfaces can increase gradually, and the resistance that air communication is crossed also increases gradually, thereby needs deashing.Can manually shake off the dust of rhombus bag appearance as required, also can be through level pressure or timing blowback electric control gear, the blower fan 12 of control startup soot cleaning system, flutter valve 13 etc. carry out reverse gas cleaning automatically.When the pulsation air stream with enough momentum from Chalk-dust filtering oppositely be blown into filter bag, and make filter bag produce the vibration of high frequency short arc, can shake off the dust of bag appearance, thereby finish deashing.

Claims (2)

1. The rhombus bag filter, comprise filter box (4), ash bucket (7), freeze together in four limits, bottom of filter box (4) and four limits, upper end of ash bucket (7), the outside of four angles, the upper end of ash bucket (7) and periphery also is welded with some supporting legs (6) in order to fixing whole bag filter, and the lower end of this ash bucket (7) is equipped with successively in order to carry the auger conveyor (8) and the unloading valve (9) of dust in the ash bucket; Top one side of filter box (4) is provided with the soot cleaning system that air-purifying chamber (3), blowback air channel (2), cylinder valve (1), platform (11), blower fan (12), flutter valve (13), pulse motor (14) and gas circuit (15) constitute, and it is characterized in that:

   (1), is provided with the rhombic filter bag (16) that supports by means of skeleton that some usefulness contain conductive fiber, have that the chemical ﹠ blended fabric of antistatic performance makes in the filter box (4);
2. (2), the wall all around of filter box (4) is provided with some explosion-proof relief valves (17).

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