CN2868434Y

CN2868434Y - Dual-regulating split-flow mouth type combined separator

Info

Publication number: CN2868434Y
Application number: CN 200520016777
Authority: CN
Inventors: 倪文龙
Original assignee: Individual
Current assignee: Ni Wenlong
Priority date: 2005-04-16
Filing date: 2005-04-16
Publication date: 2007-02-14
Anticipated expiration: 2015-04-16

Abstract

Double adjusting diversion gap type combined separator belongs to the technical field of gas and solid separation in rotating fluid force field, is used in superfine powder collection and powder concentration and classification in environmental protection. The invention can improve the collecting ability of separator for the superfine powder that is smaller than 10 Mum obviously without increasing the pressure lose and operating cost obviously. The technical plan is: the lower part of the cylinder of cyclone separator has tangential air inlet, and the upper part of the cylinder of cyclone separator has central exhaustion pipe, the tangential air outlet splits flow inside the cylinder, the central exhaustion pipe, the purified gas flow adjusting valve and air fan joint up in series to form purified gas exhausting passage to the atmosphere, adjusting the opening of flow adjusting valve can control the splitting flow amount effectively; the tangential air outlet, the double air inlets cyclone separator, air fan and down air inlet joint up in series to form partial circulating passage for a secondary separation. Split flow adjusting sleeve that is coaxial with the exhaustion pipe is arranged outside the central exhaustion pipe of the cyclone separator. The two sides at the upper part of the split flow adjusting sleeve connect with two gear racks rigidly that gear into the gear rotating around fixed axes synchronously respectively.

Description

Dual regulation diffluence pass formula combination trap

Technical field

Carry out gas-solid two-phase separation technology field in the fluid field of force of the utility model genus rotation, be applied to environmental protection and gather dust, select the fine dust in the powder classification process to capture.

Background technology

Reversible type list air outlet cyclone separator is flowed in cutting of domestic current technology, owing to have " core forced vortex ", " short-circuit flow ", " secondary back-mixing " three birth defects, it is bigger that ubiquity the pressure loss, and separative efficiency is not high, is difficult to capture the shortcoming of the following low concentration dust of 15 μ m.

In order to overcome these three birth defects of traditional cyclone separator, the worker has done all effort both at home and abroad, more representational is " adjustable pair of air outlet cyclone separator of flow-guiding mouth " patented technology (ZL00265063.0, patentee Ni Wen dragon, Ni Zhenhong), Fig. 5 is adjustable pair of air outlet cyclone separator of a flow-guiding mouth fundamental diagram, this technology increases a following air outlet 18b than single air outlet cyclone separator, reflection cone 17b also increases an adjustable guiding device 16b of flow-guiding mouth aperture and last air outlet 14b, following air outlet 18b just joins, thereby avoided the generation of core forced vortex, make the pressure loss reduce more than 30%, simultaneously because of having avoided " short-circuit flow " and " secondary back-mixing ", separative efficiency is improved, but in the dust (flue dust) less than the particulate of 10 μ m, arresting efficiency is difficult to very high, usually need add thereafter join investment and operating cost higher bag gather dust or electricity gathers dust.

Summary of the invention

The utility model purpose is to provide a kind of dual regulation diffluence pass formula combination trap that can capture less than the fine dust of 10 μ m: under the condition that does not significantly increase the existing technology cyclone separator pressure loss and operating cost, adopt the shunting serial connection and the part circulation of two-stage low-resistance separator, significantly improve cyclone separator and capture the fine powder ability.

The technical scheme that the utility model adopted is: dual regulation diffluence pass formula combination trap is made up of air-out cyclone separator, Purge gas flow control valve, dust concentration tester, two air outlet cyclone separator, blower fan on the following air intake of diffluence pass position and flow dual regulation.Cyclone separator is made of tangent air inlet of cylindrical tube, downside and two blast pipes on cylindrical tube top, central authorities' blast pipe and tangential exhaust outlet form diffluence pass in inner barrel, central authorities' blast pipe and Purge gas flow control valve, blower fan composes in series Purge gas emptying passage, effectively controls the Purge gas flow by flow control valve; Tangential exhaust outlet and two air outlet cyclone separators, blower fan, following air inlet serial connection constitutes the circulation canal that separate the second level.The central blast pipe of cyclone separator is installed the shunting regulating sleeve outward and is cooperated with the blast pipe concentric gap, shunting regulating sleeve two bottom sides and two tooth bars are rigidly connected, two tooth bars respectively with the gears engaged of rotating synchronously around fixed axis, by rack-and-pinion transmission lift adjustment sleeve end opening position, promptly change the diffluence pass physical location, to regulate the ratio of purifying gas flow and enrichment dust throughput.

System is work like this: dusty gas is tangentially entered by air inlet under the cyclone separator, in rotating up process, wall is hit in thick grit centrifugation, drop down onto the separate lock air-valve, be enriched in the periphery than fine dust, the internal layer purifying gas flow is shunted in central blast pipe lower end with peripheral enrichment dust air-flow, purifying gas flow is from central blast pipe, the Purge gas flow control valve, the dust concentration tester, air-introduced machine is discharged, enrichment dust air-flow is discharged from tangential exhaust outlet, enter two air outlet cyclone separators again, the following fine dust of 10 μ m collides and the increase of adhesive aggregation probability because of mutual under enrichment state, more easily be captured, discharge through the control of dust air valve, gas is through reflection cone behind the double purification, the flow-guiding mouth of guide shell, two air outlets up and down, circulating fan is discharged, the most of inlet from the recirculation of secondary separation air-flow returned air inlet under the cyclone separator, enter next separating cycle with pending dusty gas, so can ignore the residual dirt load loss in the first class purification air-flow of back, the total discharging of system is the residual dirt capacity value of Purge gas in the central blast pipe, so the total dust-collecting efficiency of secondary significantly improves than one-level.

The beneficial effects of the utility model are:

1. adopt two kinds of low resistance cyclone separator shunting serial connections and part circulation, dust-contained airflow in cyclone separator after first order Purge gas shunting, the following fine dust of 10 μ m is mutually collision and the increase of adhesive aggregation probability and effectively captured under enrichment state, so the total dust-collecting efficiency of secondary significantly improves than one-level; Again because first order cyclone separator does not have buffer brake loss and core forced vortex, the pressure loss will be about 35% of a conventional separators, second level separator adopts two air outlet cyclone separators, its pressure loss is 70% of a conventional separators, thereby the addition of the two-stage pressure loss does not significantly increase than conventional separators.

2. adopt the dual regulation method to realize the adjusting of diffluence pass Purge gas discharge capacity and residual dirt capacity value: 1. turn Purge gas flow control valve is directly regulated flow; 2. by the rack-and-pinion adjusting device, the shunting regulating sleeve that lifting is coaxial with blast pipe changes the diffluence pass physical location, thereby the residual dust concentration of Purge gas is effectively controlled.

Description of drawings

Now further specify in conjunction with diagram and embodiment:

Fig. 1 is the utility model fundamental diagram;

Fig. 2 is the A-A cutaway view of Fig. 1;

Fig. 3 is the B-B cutaway view of Fig. 1;

Fig. 4 is the partial enlarged drawing of sequence number 7 rack-and-pinion adjusting devices among Fig. 1;

Fig. 5 is two air outlet separator schematic diagrams.

Among the figure: air inlet under the 1-; 2-control of dust air valve; The 3-cyclone separator; 4-separate lock air-valve; 5-central authorities blast pipe; 6-shunts regulating sleeve; 7-rack-and-pinion adjusting device; 8-shunting speed is regulated mouth; 9-Purge gas flow control valve; The 10-air-introduced machine; 11-dust concentration tester; The tangential exhaust outlet of 12-; Air inlet on the two air-out separators of 13-; 14 (14b)-last air outlet; 15 (15b)-top cylindrical shells; 16 (16b)-guide shells; 17 (17b)-reflection cones; 18 (18b)-following air outlet; The 19-circulating fan; 20-secondary separation air-flow recirculation inlet; 21-shunts speed-regulating valve.

The specific embodiment

Among Fig. 1, dusty gas is by the following air inlet 1 tangential cyclone separator 3 that screws in, in rotating up process, because centrifugal action, dust is centrifugal sedimentation radially, and central gas stream is purified, edge air-flow grit enrichment, thick grit hits wall and falls, and discharges by separate lock air-valve 4; The center purifying gas flow is shunted in central blast pipe 5 lower ends with peripheral enrichment dust air-flow.Shunt volume effectively control is the key that system captures fine dust, for this reason, diffluence pass Purge gas discharge capacity ratio is controlled by dual regulation: 1. by dust concentration tester 11 detected values, regulate Purge gas flow control valve 9 apertures, the air quantity that change is discharged from air-introduced machine 10, thus shunt volume with minimum residual dirt load coupling obtained; 2. outside the blast pipe 5 the separation adjusting sleeve is arranged, the sleeve upper end has just connected two toothed rack, two gears of turn synchronously and tooth bar engagement, by rack-and-pinion adjusting device 7, lifting shunting regulating sleeve 6, change the diffluence pass physical location, realize fine tuning, thereby the residual dust concentration of Purge gas is effectively controlled.The tangential outlet 12 of cylindrical shell upside is connected in series with air inlet 13 on two air outlet cyclone separators, the peripheral enrichment dust air-flow of discharging from the tangential outlet of cyclone separator is under the high-efficiency low-resistance centrifugation of the guide shell 16 of two air outlet cyclone separators, reflection cone 17, fine dust is efficiently captured, and collects through control of dust air valve 2; Air-flow behind the double purification is through the flow-guiding mouth of guide shell, last air outlet 14, air outlet 18, circulating fan 19 discharges down, major part is returned air inlet 1 under the cyclone separator from secondary separation air-flow recirculation inlet 20, enter next separating cycle with pending dusty gas, the sub-fraction shunting is as the auxiliary adjustment gas in Purge gas flow field in the central blast pipe.

Claims

1, dual regulation diffluence pass formula combination trap is made up of cyclone separator, two air outlet cyclone separator, Purge gas flow control valve, dust concentration tester, blower fan, it is characterized in that: cyclone separator is made of tangent air inlet of cylindrical tube, downside and two blast pipes on top, central authorities' blast pipe and tangential exhaust outlet form diffluence pass in inner barrel, central authorities' blast pipe and Purge gas flow control valve, blower fan composes in series Purge gas emptying passage; Tangential exhaust outlet is with two air outlet cyclone separators, blower fan, the air inlet serial connection constitutes the circulation canal that separate the second level down.

2, dual regulation diffluence pass formula combination trap according to claim 1, it is characterized in that: the central blast pipe of cyclone separator is installed the shunting regulating sleeve outward and is cooperated with the blast pipe concentric gap, shunting regulating sleeve upper shaft cross-wise direction both sides two toothed rack that are rigidly connected, two tooth bars respectively with the gears engaged of rotating synchronously around fixed axis.