CN103446834A

CN103446834A - Vacuum filter

Info

Publication number: CN103446834A
Application number: CN2013103899310A
Authority: CN
Inventors: 陈建忠; 俞金芳
Original assignee: Nantong Haiying Electromechanical Group Co Ltd
Current assignee: Nantong Haiying Electromechanical Group Co Ltd
Priority date: 2013-08-28
Filing date: 2013-08-28
Publication date: 2013-12-18
Anticipated expiration: 2033-08-28
Also published as: CN103446834B

Abstract

The invention relates to a vacuum filter, belonging to the technical field of filters. A filter cleaning cavity is arranged at the upper part of a housing of the filter, a filtering cavity is arranged at the lower part of the filter cleaning cavity, a group of tubular filter bags are placed in the filtering cavity, the filter cleaning cavity is equipped with a pulse spraying device, a diversion cone is arranged at the bottom of the filtering cavity, a straight cylinder section accommodating the diversion cone is downwards extended from the housing, the straight cylinder section comprises a tangential gas inlet and a dust collection cone, a dust outlet is formed in the bottom end of the dust collection cone, a labyrinth device is arranged in the diversion cone, and the labyrinth device comprises a group of metal lower diversion plates and a group of metal upper diversion plates, which are radiant along the radial direction of a central axis. The vacuum filter disclosed by the invention can organically combine cyclone dust collection and dust removal by filtration and has the advantages of compact structure, good purification effect, long service life and convenience in operation.

Description

A kind of vacuum filter

Technical field

The present invention relates to a kind of filter, especially a kind of vacuum filter, belong to the filter technology field.

Background technology

Bag filter is a kind of equipment that is widely used in the numerous areas such as environmental protection, purification.Traditional bag filter mainly consists of filtration system, pulse jet system, compressed air system, ash discharge system etc.During work, utilize the bag-shaped filter element that fibrous braid is made to trap solid particulate matter in dusty gas, reach the effect of dedusting.

When adopting existing sack cleaner to process the high-temperature dusty gas that the contour fire grate of steel mill goes out, filter bag is easy to be heated and burns out.Adopt first cooling to refilter, will make cleaner become huge, and the bulky grain dust of temperature-fall period sedimentation is difficult to get rid of.

The Chinese patent application that application number is 201220318437.6 discloses a kind of vacuum filter, comprises filter housings, is arranged at air inlet pipe on the filter cylinder upper top cover between two parties, is fixed on filter bag support, this support under the filter cylinder upper top cover between two parties the cylindrical shell grills that is upper end, is welded into by steel bar; Suit is fixed on the filter bag on the filter bag support.A kind of vacuum filter of the present invention, for the airflow filtering device of titanium sponge distillation vacuum unit front end, can improve the corrosion-resistant and wear-resistant ability of vacuum unit, and thing or magnesium powder, magnesium chloride powder enter vacuum system, pollution pump oil at a middle or low price to avoid air-flow.Therefore yet have following problem in this type of filter use procedure: 1) owing to there is no the bulky grain capturing structure, while filtering the high-temperature gas of containing metal particle, easy spontaneous combustion forms Mars and makes filter element burn out inefficacy; Therefore 2) owing to there is no air-flow homogenising structure, unavoidable dusty gas is uneven and to cause the part filter element to lose efficacy too fast, causes system pressure drop rapid, and result makes that frequency of maintenance is too high, production cost strengthens; 3) lack the cooling behave, easily due to the filtering gas excess Temperature, shorten the service life of filter element.

Summary of the invention

The object of the invention is to: the shortcoming existed for above-mentioned prior art proposes a kind of body good dedusting effect can not only filter high temperature dust gas the time, and compact conformation, the long vacuum filter of life of bag filter, thereby meets the processing demands of blast furnace waste gas.

In order to reach above purpose, vacuum filter of the present invention comprises vertical tube shape filter housings, described housing top vacuumizes while having work and leads to Lv Jing chamber, gas outlet, the filter chamber of bottom, the clean chamber of described filter for separating by the filter bag supporting plate, in described filter chamber, settle one group of sack to be supported on the tubulose filter bag that the filter bag supporting plate supports, the clean chamber of described filter is equipped with spout and is faced toward respectively the pulse spraying equipment of each filter bag, described filter chamber bottom is the deflection cone of convergent, its improvements are: described housing extends the direct tube section that contains deflection cone down, described direct tube section has the control of dust cone of tangential admission mouth and bottom convergent, the bottom of described control of dust cone is able to turn on or off ash hole, the bottom of described deflection cone has the end mouth that stretches into the control of dust cone, there is maze device in described deflection cone, described maze device consists of one group of metal chin spoiler and one group of metal baffle upper plate of central shaft radial radiation.

During work, high-temperature dusty gas enters the control of dust cone from the tangential admission mouth, forms the whirlwind of backspin, oarse-grained dust is clashed into after control of dust is bored wall under the action of the centrifugal and drop to the ash hole place.The negative pressure at whirlwind center makes air-flow enter the end mouth of deflection cone, passes through maze device.This device not only plays air-flow and acts on uniformly, and makes the gas radiating and cooling, and the clean gas that sees through afterwards filter bag enters filter clean chamber output.

It is that the angular position of described chin spoiler and baffle upper plate staggers, and can make full and uniformization of air-flow like this that the present invention further improves.

The present invention further improves, and described control of dust cone bottom one side is provided with the broken arch mouth of input pulse air-flow.Can guarantee desirable ash-removal effect like this.

The accompanying drawing explanation

Below in conjunction with accompanying drawing, the present invention is further illustrated.

The structural representation that Fig. 1 is one embodiment of the invention.

The cutaway view that Fig. 2 is Fig. 1.

The top view that Fig. 3 is Fig. 1.

The filter bag arrangement schematic diagram that Fig. 4 is Fig. 1.

The maze portion structural representation that Fig. 5 is Fig. 2.

The A-A cutaway view that Fig. 6 is Fig. 4.

The B-B cutaway view that Fig. 7 is Fig. 4.

The structure for amplifying schematic diagram that Fig. 8 is Fig. 1 bottom.

The specific embodiment

Embodiment mono-

The vacuum filter of the present embodiment as shown in Figures 1 to 4, the vertical tube shape filter housings 1 that comprises circular section, housing 1 top have with vacuum generating equipment together with vacuum flange mouth 1-14, vacuumize and lead to the clean chamber 1-1 of filter of gas outlet 1-4 when top has work.Filter the filter chamber 1-3 of 1-1 bottom, clean chamber for separating by filter bag supporting plate 1-2, in filter chamber 1-3, settle one group of sack to be supported on the tubulose filter bag 2 that the filter bag supporting plate supports.Filter clean chamber 1-1 and spout is housed respectively facing to the pulse spraying equipment 3 of each filter bag.Filter chamber 1-3 bottom is the deflection cone 1-5 of convergent.Housing 1 extends the direct tube section 1-6 that contains deflection cone 1-5 down, and direct tube section 1-6 has the control of dust cone 1-7 of tangential admission mouth 1-8 and bottom convergent.The bottom of control of dust cone 1-7 is the dust-collecting cylinder 1-11 with able to turn on or off ash hole 1-9.The bottom of deflection cone 1-5 has the end mouth 1-10 that stretches into control of dust cone 1-7.

Have maze device in deflection cone 1-5, this maze device as shown in Figs. 5 to 7, consists of vertical central shaft 5-1 radial radiation and uniform 12 metal chin spoiler 5-3 and 12 metal baffle upper plate 5-2.Leave axially spaced-apart 5-4 between chin spoiler 5-3 and baffle upper plate 5-2, angular position staggers each other.After high temperature air enters, metal chin spoiler 5-3 and metal baffle upper plate 5-2 can make full and uniformization of air-flow, have good radiating and cooling effect simultaneously.

In addition, control of dust cone 1-7 bottom one side is provided with the broken arch mouth 1-12 of input pulse air-flow.Like this, the input pulse air, fully deposit the dust on tube wall when needed.As shown in Figure 8, ash hole 1-9 is equipped with and hingedly in dust-collecting cylinder 1-11 lower end one side, goes out tepetate 9-1, the piston rod end that goes out tepetate 9-1 extended lever arm outer end and the hinged ash discharge cylinder 9-2 in control of dust cone 1-7 lower end is hinged, therefore can work as dust while reaching level-sensing device 1-13, tepetate 9-1 is opened out in control, in time deashing.Positiver sealing when guaranteeing out that tepetate 9-1 closes, at dust-collecting cylinder 1-11 away from a side that the goes out tepetate 9-1 hinged place hinged locking bail 9-3 that tightens out dirt lid 9-1 when closure is arranged also, the tailpiece of the piston rod of this locking bail 9-3 extended compressor arm outer end and the hinged 9-3 of the locking cylinder at dust-collecting cylinder 1-11 is hinged, therefore can, after going out tepetate 9-1 closure, compress out tepetate and make its positiver sealing.

During work, the filter of the present embodiment organically combines cyclone dust removal and filtering dust collecting, so compact conformation, good purification, and experiment showed, also there is following advantage:

1) vacuum state operation, can avoid the high temperature active metal to produce naked light by controlling oxygen content, stops the phenomenon that filter bag is heated and burns out.

2) air-flow is evenly distributed and adopts the copper heat dissipation metal that thermal conductivity is good, therefore can the significant prolongation life of bag filter.

3) deflection cone can be collected bulky grain dust in the process that changes airflow direction, alleviates the burden of filter bag.

4) arch breaking apparatus employing gas shakes and replaces machinery to shake, and ash-removal effect is more obvious.

5) the deashing device good sealing effect, easy to operate.

Claims

1. a vacuum filter, comprise vertical tube shape filter housings, described housing top vacuumizes while having work and leads to Lv Jing chamber, gas outlet, the filter chamber of bottom, the clean chamber of described filter for separating by the filter bag supporting plate, in described filter chamber, settle one group of sack to be supported on the tubulose filter bag that the filter bag supporting plate supports, the clean chamber of described filter is equipped with spout and is faced toward respectively the pulse spraying equipment of each filter bag, described filter chamber bottom is the deflection cone of convergent, it is characterized in that: described housing extends the direct tube section that contains deflection cone down, described direct tube section has the control of dust cone of tangential admission mouth and bottom convergent, the bottom of described control of dust cone is able to turn on or off ash hole, the bottom of described deflection cone has the end mouth that stretches into the control of dust cone, there is maze device in described deflection cone, described maze device consists of one group of metal chin spoiler and one group of metal baffle upper plate of central shaft radial radiation.。

2. vacuum filter according to claim 1, it is characterized in that: the angular position of described chin spoiler and baffle upper plate staggers.

3. vacuum filter according to claim 2, is characterized in that: between described chin spoiler and baffle upper plate, leave axially spaced-apart.

4. vacuum filter according to claim 3 is characterized in that: described control of dust cone bottom one side is provided with the broken arch mouth of input pulse air-flow.

5. according to the arbitrary described vacuum filter of claim 1 to 4, it is characterized in that: described ash hole is equipped with the hinged tepetate that goes out in dust-collecting cylinder lower end one side, and the described piston rod end that goes out tepetate extended lever arm outer end and the hinged ash discharge cylinder in control of dust cone lower end is hinged.

6. vacuum filter according to claim 5, it is characterized in that: described dust-collecting cylinder is away from a side that the goes out the tepetate hinged place hinged locking bail that tightens out the dirt lid when closure is arranged also, and the tailpiece of the piston rod of described this locking bail extended compressor arm outer end and the hinged locking cylinder at dust-collecting cylinder is hinged.