US1922299A

US1922299A - Dust collector

Info

Publication number: US1922299A
Application number: US464075A
Authority: US
Inventors: Karl F Juengling; Hakon A Berg
Original assignee: Individual
Current assignee: Individual
Priority date: 1930-06-26
Filing date: 1930-06-26
Publication date: 1933-08-15
Anticipated expiration: 1950-08-15

Description

15, 1933- K. F. JUENGLING El AL 1,922,299

DUST COLLECTOR Filed June 26, 1930 2 Sheets-Sheet l //v:/ wraes 16422 .JE/SGLI/VG.

HAW/VA. 55ers 1933- K. F. JUENGLING ET AL 1,922,299

DUST COLLECTOR Filed June 26, 1950 2 Sheets-Sheet 2 Q@ m QMA -W Patented Aug. 15, 1.933

* D ATESMENT OF IC Q i r 1,922,299

$1,922,299 a j nus'rcoLLnc'ron Karl F. Jue ngling fl Lakewood; Ohio, and Italian A. Berg, Birmingham, Ala.

Application June 26, 1930. Serial No; 464,075

10 Claims. (01. ce-s6) Although our invention is capable of general application for dust-collecting purposes, it particularly relates to apparatus of this nature adapted to remove dustfrorngas, particularly for cleaning gas from blast furnaces. i

It is well known that dust-laden gas is dis charged from blast furnaces under considerable pressure andv hence travels through dust collec tors at a high velocity. These dust collectors usually consistof' or are provided with a curved passageway through which the dust-laden gas travels and in which the dust is separated from the gas by centrifugal action. The main purpose of ouhinventionispositively to remove the dust which has been centrifugally sep-- settling in a quietfarea into a storage bin. In the eventthat our invention is utilized for separating dust from a carrier under circum-- i In saidannexed drawings stances wherein the carrier is not given a high velocity at its source, which, as stated; is

or inducing the rapid travel of the dust-laden carrier through suctiondevice. V V j The annexed drawings and the following de scription set forth in detail certain means cmthe passageway by a suitable bodying our invention; such means disclosing,

howeven but two of the variousfornis inwhich theprinciple of the invention may be applied.

Figure 1 tea central vertical section of our improved dustcollector, the view"also showing atraclc and car running thereupon and into which thedust accumulated in the several storage binsmayjbe discharged, the-sectiOn being taken in the planeindicated by the line 1-1,

Figure 2 is a plan section, taken in the planes indicated byythe line 22,Figure1;

Figure 3yis a central vertical secticin of "a modified form of apparatus, taken in the plane and centrifugal action.

'ticular over-all dimension of the casing 2 and easing wall, which open into comparatively charge pipe l (If iguresl and 2) from a blast furnace (not shown) feeds the dusteladen gas at a high velocity into a casing 2 comprised of a plurality of turns which form a spiralpassaga way from the outside to the central area of the casing, the pipe 1 discharging tangentially into the casing 2. The dust in the gas under-the centrifugal action follows the line of the outer wall of the casing 2 as it traverses the spiral path. By reason of the spiral arrangement, the over-all diameter of each succeeding inner spiral turn is smaller than the adjacently. outer one;

and furthermore, the cross sectionof the spiral passageway gradually decreases, as is evident from an inspectionof Figure 2. The inner end 70 of theinnermost turn of the casingZ opens at the segmentalarea 23 into a central chamber 24 which coniinunicates adjacent the top of the casing 2 with'an exitpassageway 4. Through this ,latterpassageway the cleaned gas passes frcm the apparatus: V c

' Wedirectparticular attention to the fact. that the cur ved passageway is closed; That is, the pathway of the dustladenjgas from the pipe l to the. exit 23 is" provided in a separate 80 chamber which is of comparatively restricted cross-section, and thus maintains the velocity This arrangement is essentially an improvement over those construe tions in which the dust-laden gas travels in a comparatively large open chamber and is not caused necessarily to follow a definitefrestricted pathway. The dust-laden gas in our apparatus does not enter any such comparatively large open chamber until his dischargedthrough the exit 23 into the central chamber 2%. l The requirements incidentj to the operation of blast furnacesof differentsiz es will govern the partheparticlllar cross-section or gradual decrease in cross-section of the curved passageway in said casing; j I l The essence of our invention is the provision of means for collecting the dust which is following the outer Wall of the various casing turns} into quiet chambers where it may settle into storage bins without further disturbance or agitation. For this purpose we have formed a pluralityof spaced vertical ports 5 in the narrow vertical chambersx 6 which discharge into separate and independent bins '7. construction is plainly seen in Figure 1. These chambers 6- are closed to any influence which would induce agitation of the dust so that the be directedthrough the ports 5 into the settling chambers 6, we speed up the travel of the dust-laden gas and hence the centrifugal action adjacently forward of each port 5 by a vane 20 which is secured at its inner end to" the casing 2, and extends outwardly any desired amount and is adjustable by a: handle 25 or other suitable operating means. This construction creates a restrictedipassage:opene ing 26 which increases the velocity of the gas travel, as will ,be-readily understood. Further more, we provide lips 21 at the far sides of the ports 5 which;slightly extend into the gas passageway and serve positivelytov direct the dusttending to slide acrossthe. ports 5, through.

said ports and into the chambers 6.

In Figures 3 and v4, we showadiiferentform of construction-in which a discharge pipe llfrom the blast. furnace feeds the dust-laden gas tangentially intoacasing 12icomprised of aplurality of. turns wound in helicalformation and dis. charging. at the bottom intoa chamber 13'which communicates adjacent its top with a gas-exit.

pipe 14. Thisformof constructionalsois provided With spaced casingports 15 and casing lips 22. adapted to cause the :dust which-is traveling along the outerwall of the helix-under centrifu gal action-torescape into and settle throughthe passageways 16-into the bins 17. A-bin 18 isalso provided at the bottomof the centralchamber 13, the bins l7. and18 being adapted tobe emp tied into the car 19. This form.of. construction also isprovidedwith adjustable vanes 2'7 which are operated by handles 23 and serve to: narrow upthe cross-sectionlofe the passageway, to whatever extent desired, adjacently forward. of the ports l5; In-the form of constructionshowniin Figures 3 and 4-, the over-all diameter of. each. turn of the helix. is-- the same as that of each other turn, and the crossesectional area of the passageway through thecasinglZ is the same from itsouter end toits-innen end, incontradistinction to the varying over-all dimensions and varying cross-sectional areas=ofthe formof device shown inFigures 1 and2.

Ourimproved apparatus progressively increases the dust separating effect as the gases pass-from theentrance to the GXlt1Ofzth dust collector; first, byprogressively increasing the velocityof the gases through the curved passageway and, secondly, by gradually decreasing the radius of the; passageway as the gases-pass from the inlet to the outlet of the collector.

What weclaim-is: r

1; In a dust collector, provided with means for 'inducing'the flow of aldust-laden carrier 'the combination of acurved. conduitin which: the separation of I dust from the'carrier is effected by centrifugal action, means comprising.- a'plurality of exit ports and'separatespeed modifying elements'ior the carrier cooperating with and located adj acently forwardly: of: the respective exit ports to provide for the successive removal of separated dust from the outer'area of the con- I duit, separate and independent closed settling chambers communicatingrespectively; with said last-mentioned means, and means forming an exit from the conduit for the clean carrier.

2. In a dust collector, provided with means for inducing the flow of a dust-1aden carrier the combination of a curved conduit in which the separation or" dust from the carrier is effected by centrifugal action, means comprising a plurality of exit ports and separate adjustable speed modifying elements for the carrier cooperating with and located adj acently forwardly of the respective exit ports to provide for the successive removal ofseparated dust from the outer area of the conduit;-v separate and independent closed settling chambers communicating respectively with said lastementioned means, and means forming an exit from the conduit for the clean carrier.

3..In'a dust-collector, provided with means for inducing the flow of a dust-laden carrier the combination of a curved conduit in which the separation of dust from the carrier is effected by centrifugal action, means comprising a plurality of exit ports and aseparate speed increasing element for the carrier cooperating with each respective exit port to provide for the successive removal of. separateddust from the outer area of the conduit, dust-intercepting lips disposed adjacent the far ends of said exit ports and adapted positively to direct the dust through said ports, separate and'independent closed settling chambers communicating respectively with said ports, and means forming an exit from the .conduit for the cleancarrier.

4. In a dust collector, provided with means for inducing the flow of a dust-laden carrier the" combinationof a curved conduit in which the separation of dust from the carrier is eifected by centrifugalaction,.means providing for the successive removal of separated dust from the outer area of the conduit, means restricting the cross" section of the conduit adjacent the near ends of said removal means, separate and independent closed settling chambers communicating respectively with said lasts-mentioned means, and means forming an exit from the conduit for the clean carrier.

5. In dust collector, provided. with means for inducing the flow of a dust-laden carrier the combination of. av curved conduit inwhich the separation of dust from the. carrier is effected by centrifugal action, means providingfor the successive removal of separated dust from the outer area of the conduit, means adjustably restricting the cross-section of the conduit adjacent the near ends of said removalmeans, separate and independent'closedsettling chambers communicatingrespectively with said lastmentioned means, andmeans forming an exit from the conduit for. the clean carrier.

6'; In a. dust collector provided with means for. inducing theflow of dust-laden gas; the

combination of means forming a spiral conduit comprised of a-plurality of communicating turns whose cross-sectionconstantly decreases to increase the speed of the gas, a plurality. of exitports on the outer wall of said conduit to receive dust separated by, centrifugal action from the gas, means adjacently forwardly of the respective exit ports for locally increasing the speed of. the gas, means for carryingv to a point of discharge separated dust from said exit ports, andmeans-forming anexit fromthe conduit for purified gas.

7. In a dust collector provided with means for inducing the flow of dust-laden gas; the

combinationof means forming a spiral conduit 3 comprised of a plurality of communicating turns whose cross-section constantly decreases to increase the speed of the gas, a plurality of exit it of said exit ports, means for carrying separated dust away from said exit ports, andineans forming an exit from the conduit for purified gas. v 1

8. In a dust collector, provided with means for inducing the flow of dust-laden gas the combination of means forming a spiral conduit comprised of a plurality of communicating turns M wrapped in an inwardly wound coil and in which the separation 'of the dust from the gas is efiected by centrifugal action, the cross-section of the conduit constantly decreasing from end to end to increase the speed of the gases passing therethrough, means for successively taking oil separated. dust from the conduit, means "in said conduit adjacentlyrforwardly of the last-mentioned means for locally increasingthe speed of gas, and means forming an exit from the conduit for purified gas.

9. In a dustcollector, provided with meansfor inducing the flow of dust laden gas the combination of means forming a spiral conduit --com rised of a plurality of communicating turns Wrapped in an inwardly wound coil andin which the separation of the dust from the gas iseffected bycentrifugal action, the cross-sec tion of the conduitwconstantly decreasing from end to end, means for successively taking off separated dust from the conduit, means substantially opposite said dust take-01f means forming baffles adaptedtodecrease the effective cross-section of the conduit adjacently forwardly of the several dust take-off means, and

means forming an exit from the conduit for 10. Ina dust collector, provided with means for inducing the flow of dust-laden gas the combination of a casing formed with a conduit of coil formation whose cross-section gradually decreases from its outer end to its inner end and in which conduit the. separation of the dust from the gas is effected by centrifugal action, said casing having an entrance opening for dust-laden gas and an upper discharge open- .ing for purified gas, a plurality of dust-discharge openings formed in the respective outer walls of the turns of the conduit, closed settling cham-" bers into which said dust-discharge openings severally feed, a dust bin within said casing and lying below said discharge openingfor purified gas and below the exit from said conduit, a plurality of adjustable baflles restricting the effective cross-section of the conduit adjacently forwardly of the several dust-discharge openii ings, and dust-directing lips disposed adjacent the far ends of the several dust-discharge openings.

KARL F. JUENGLING.

HAKON A.' BERG.