CN2100260U - Air-flow (water flow) powder screen - Google Patents

Abstract

The utility model discloses a powder screen which can carry out dry or wet classification work to the powdery material, suitable for screening or filtering of various light fine powder and micro powder. A wind wheel or a water wheel, a hair brush, a screen mesh and corresponding mechanisms are arranged on a vibration machine body which comprises an electromotor, a flexible shaft coupling, an exciter, a screen body, a vibration isolation spring and a base. Utilizing the airflow or water flow with high speed to be as carriers under the closed state, the powder screen makes the microparticle of powder lot ejected to the screen mesh in large enough dynamic energy after the microparticle of the powder lot is fully diffused and carries out quick fine grading, wherein, the air flow screen can form a close circuit screening system with a negative-pressure source and a dust remover, ensuring that powder dust can overflow.

Description

Air-flow (water flow) powder screen

The utility model relates to a kind of sieving machine, particularly a kind of sieving machine that can carry out dry type (or wet type) graded operation to granular material.Be suitable for sieving light fine powder and micro mist, or be used for filtering and the purification operation.

Existing granular material classifying equipoment mainly contains two kinds: common vibratory sieve and winnowing machine.Common used by oscillating screen is effective in the classification of block and granular material, is used widely.Not only efficient is low but be used for the screening of granular material, and dust from flying, the waste resource, and contaminated environment, the noise height, the serious harm people's is healthy.Its reason is that common vibratory sieve is the gravity operating principle, and quality block and granular material is big, and gravitional force is also bigger, therefore saturating easily sieve.And the particle mass of granular material is little, and gravitional force is also little, therefore is difficult for saturating sieve by gravity; The particulate of granular material also often has absorption affinity, or a plurality of absorption is agglomerating, or adheres to and block mesh on the screen cloth, makes screening operation be difficult to carry out.Common used by oscillating screen is difficult equally in the wet classification operation of granular material.Winnowing machine is to lean on the no net of blast and air quantity control product fineness to select powder equipment, when be used for the sorting particulate form the rule and the undemanding material of fineness requirement be feasible, the efficiency of separation is also than higher, but the sorting of very strict granular material is just not competent again for containing sheet or fibrous particles and fineness requirement, it is serious not only to mix the level phenomenon, and equipment volume is big, energy consumption is high.

Task of the present utility model provides a kind of air-flow (or current etc.) that utilizes and makes carrier, the particulate of waiting to sieve granular material is fully spread and spray the sieving machine that carries out graded operation with enough big kinetic energy to screen cloth, it can be fast and accurately to fine powder classification or with solid-liquid body isolated by filtration and air cleaning.

Task of the present utility model is finished as follows: material bearing disc, vertical type motor, flexible coupling, vertical vibrator, isolation spring, base are assembled into a common circular motion elemental body vibrating body, on the lengthening section of the upper end of vertical vibrator vertical pivot, wind wheel is installed, wind wheel edge dress hairbrush, the vertical barrel type screen cloth is being fixed in the wind wheel periphery.Entry table and material bearing disc are rigidly connected, and by detachable outer cover sealing.Correct position at material bearing disc is left exhaust outlet, powder outlet, slag-drip opening respectively.On entry table, offer charging aperture, air inlet.After the vertical type motor energising, motor shaft drives vertical vibrator and wind wheel rotation by flexible coupling.At this moment it is inboard that granular material and outside air are inhaled into (or band wind powder is admitted to) tube net, thereupon wind wheel with the gas material mixture to around blow, the material particulate is made carrier with the air blast that forms, and under the kinetic energy effect that itself has had the directive screen cloth, can not cross net greater than the particulate of mesh is swept from screen cloth by hairbrush, under down current and gravity effect, sink to the material bearing disc middle part, moving to slag-drip opening under the vibration force effect discharges, particulate less than mesh passes screen cloth fast, wherein the part fine powder enters the deduster collection by exhaust outlet with air-flow, and another part fine powder sinks to the circular ring path of material bearing disc, moves to powder outlet and discharges.When being used for the operation of wet type sieve powder, with the wind wheel water wheels that change the outfit, close exhaust outlet, be current sieve or solid-liquid filter.Because do not have the bed of material topped all the time on the screen cloth, mesh is always straightway, so screening efficiency is high, and fineness is very strict, and no oversize mixes the level phenomenon.Full-closed structure is guaranteed not have dust and is overflow diffusing.

Below with reference to accompanying drawing the utility model is described in further detail.

Accompanying drawing is a cutaway view of the present utility model.

With reference to accompanying drawing, base 1 is a ring-type cylinder shape steel construction piece, and one group of isolation spring 7 is distributed on the base 1, and whole sieve nest holder is flat.Motor 2 is fixed on the crossbeam of base 1, and the two ends of flexible coupling 3 are connected with vertical pivot 4 with motor 2 respectively.Two donuts 10 and 12 and disk 8 be welded into material bearing disc, bearing block 6(contains bearing) be installed in material bearing disc center and orthogonal.Eccentric block 30 and 5 is separately fixed on the vertical pivot 4 and mutual wrong certain phase angle up and down, and wind wheel 16 is fixed on the upper end of vertical pivot 4.Annulus spare 20 and 22 is welded into entry table, by bars 17 entry table and material bearing disc is rigidly connected and forms sieve nest, and removable seal 18 seals sieve nest.A plurality of rod members 15 are fixed on part 12 and 22, and the two ends up and down of screen cloth 14 wrap in respectively on part 22 and the part 12, and respectively with pressing net circle 19 and 13 to compress.Porous plate 21 is fixed on the part 22, and pipe fitting 26 is fixed on the porous plate 21, and the end opening of cloth bag 23 is fixed on the part 22, and cover plate 24 is pressed on the part 22, and air inlet 25 is welded on the side and the tangent with it perforation of part 22.Hairbrush 27 is fixed on the wind wheel 16, and screen pressing machine structure 28 compresses the latasuture of screen cloth 14.Cover plate 29 is connected with part 12 and sealing around vertical pivot 4.Exhaust outlet 11, slag-drip opening 31 and powder outlet 33 are opened the correct position at material bearing disc respectively.Powder- scraper 9 and 32 is placed on the annular passage of material bearing disc.

Before the operation, the negative pressure source (not drawing among the figure) that will have deduster is connected with exhaust outlet 11 with flexible pipe, slag-drip opening 31 and powder outlet 33 are pricked air-locked sack (not drawing among the figure) respectively, and the sack end opening is pressed with weight and is strict on the ground, do not make sack tensioning up and down.Air inlet 25 connects the flexible pipe (not drawing among the figure) that has suction nozzle, and hose length is advisable with 3 to 15 meters.Cover plate 24 is pressed on the part 22, and must not leak gas.Cloth bag 23 is empty need not.During operation, with motor 2 energisings, motor shaft makes axle 4 and wind wheel 16 rotations by flexible coupling 3, because the effect of wind wheel 16 and negative pressure source, the flexible pipe that taps into air port 25 sucks material to be sieved and outside air in the tube net of sieve nest through suction nozzle, and wind wheel 16 sprays the powder of atomizing to screen cloth 14.Screen cloth 14 outsides are negative pressure regions.At this moment, pass screen cloth fast less than the fine particulates of mesh, drop on powder-scraper 9 and the 32 occupied annular passages through sedimentation, under the effect of specific exciting force and moment, fine powder is made circular motion together with powder- scraper 9 and 32, discharges to meal outlet 33 places.Motion and scraper that powder- scraper 9 and 32 continuation do not stop.The part fine powder of crossing after netting enters the deduster collection with negative-pressure air-flow.The particle diameter powder not over the net greater than mesh swept from screen cloth by the hairbrush 27 of rotation and is deposited in down current on the cover plate 29, discharges through slag-drip opening 31 places that are pushed to of vibration and wind wheel 16 lower edges.The cone-shaped structure of sieve nest waist helps the sedimentation of fine particulates.If material to be sieved has certain air-flow, air inlet 25 can be closed, remove cover plate 24, introduce in the sieve through cloth bag 23 and sieve.If material to be sieved is not with yet inconvenience suction of air-flow, available feeding device adds material in the sieve through cloth bag 23, and at this moment also without cover plate 24, air inlet 25 is closed, and replenishes air by pipe fitting 26 in sieve.If material to be sieved is the water material mixture, can be by delivery pump through air inlet 25 or suitable for reading being input in the net that cloth bag enclosed, just to change wind wheel 16 into water wheels, and close exhaust outlet 11, powder- scraper 9 and 32 look material properties can with or need not, water content in the water material mixture can not be too little, have certain fluidity.Carry out the filtration operation of Separation of Solid and Liquid, its method is identical with above-mentioned wet screening, and just screen cloth is very thin, is enough to solia particle every in the screen cloth inboard.Porous plate 21 can be controlled ironware or the lump material that inlet amount may be carried secretly in can also the filtering powder, is not damaged in order to a protection tube net 14.By motor 2, flexible coupling 3 with by axle 4, eccentric block 5, bearing block 6(contain bearing down), go up the vibrator that eccentric block 30 is formed, can replace with the vertical vibrating motor, requirement is that the upper end of this vibrating motor axle wants wind wheel 16(or water wheels can be installed), and have enough big moment of torsion to drive wind wheel 16(or water wheels) rotation.When being used for wet screening or filtration operation, if the solid-liquid mixture good fluidity, can about eccentric block 30 and 5 remove need not, sieve nest is not vibrated, simultaneously powder- scraper 9 and 32 is also removed.Used powder- scraper 9 and 32 can be assembled into a torus, also can be chorista, and its chorista quantity is not limit, and looks to scrape the powder workload and determine its number.This machine can be realized multistage classification, its method is that tubular screen cloth 14 is made up of the screen cloth of two or more specifications, pressing the upper tightly lower sparse order arranges, the outside, lower end at per pass tube net all is provided with one as powder- scraper 9 and 32 occupied annular passages, and leave powder outlet and exhaust outlet respectively in the passage outside, these passages are preferably made low inside and high outside cone-shaped ring passage, do not put powder-scraper and also can arrange powder smoothly.The tube net can be that column also can be a taper, all right diameter difference, and when the tube mesh-shaped changed, wind wheel and hairbrush shape will change.At this moment the corresponding increase of sieve nest height when being used for multistage graded operation, can be removed eccentric block 5 and 30, and the dual vibrating motor excitation device changes the outfit.

Claims (5)

1, air-flow (current) sieving machine of being made up of sieve nest, isolation spring, base, motor, flexible coupling, vibrator, wind wheel, hairbrush, tubular screen cloth and porous plate is characterized in that:

A. the vertical wind wheel (16) and the coaxial rotation of vertical vibrator that have hairbrush (27),

B. pass through tensioning and be fixed in the periphery that the interior tubular screen cloth (14) of sieve nest is in wind wheel (16),

C. sieve nest is hermetically sealed and can connect with negative pressure source.

2, by the sieving machine of claim 1 regulation, it is characterized in that having axial air inducing blade on the radially air exhaust blade of wind wheel (16), hairbrush (27) is fixed on the radial blade outer rim, and its high-quality green tea contacts a net (14) all the time.

3, the sieving machine of stipulating by claim 1, it is characterized in that tubular screen cloth (14) can be a kind of whole net of specification, also can be that plurality of specifications is by the tactic multiple tracks net of upper tightly lower sparse, all there is an annular passage in the outside, lower end of per pass tube net, and the passage outside has exhaust outlet and powder outlet.

4, by the sieving machine of claim 1 regulation, it is characterized in that forming eccentric block up and down (30) and (5) of vertical vibrator, can remove according to circumstances need not, the also exciting agency replacement that can form by double oscillating electromotor.

5, by the sieving machines of claim 1 or 2 regulations, it is characterized in that wind wheel (16) can be replaced by water wheels, close exhaust outlet (11) simultaneously, just become the current sieving machine by air flow powder sieving machine.

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