CN86100898A - Centrifugal sifting machine - Google Patents
Centrifugal sifting machine Download PDFInfo
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- CN86100898A CN86100898A CN86100898.7A CN86100898A CN86100898A CN 86100898 A CN86100898 A CN 86100898A CN 86100898 A CN86100898 A CN 86100898A CN 86100898 A CN86100898 A CN 86100898A
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Abstract
The material that screens on this centrifugal sifting machine is admitted to one in the space segment (51) of the rotating container of vertical center line (40), this space segment radially is being equipped with a mesh screen (52), ragging is equipped with in the mesh screen the inside, the washwater (54) that is in the mesh screen outside vibrates repeatedly and makes the expansion of ragging material, the vibration of washwater is by a rubber membrane (57) or an air/water interface (101), and this interface is positioned at the outside of the Free Surface of screening material substantially.Mesh screen (52) is parabolic shape substantially.
Description
The invention relates to the screening machine that is used for carrying out the ore sorting, in this screening machine the different ore of proportion by repeatedly expansion and the effect of compression carry out layering, ore is sorted out.
General screening machine is to utilize gravity and comprise a sieve that vibrates often in water, or fixing sieve is put in the water of vibration.In this screening machine, particle is to carry out sorting according to the size of proportion on the screening machine chassis, and one deck thick heavy particle or ragging are arranged on this chassis.Heavy particle enters among the ragging, and the particle that proportion is little is then taken away by the water of lateral flow.
In U.S. Patent No. 4,056, in 464, on the screening machine of being mentioned by Crouse (Cross), suspension leads on the runner of being convenient to catch, and ragging system is sieved by a knitmesh and supports, and runner and knitmesh sieve all are the frustum shape.Runner and knitmesh sieve turns round in a fixed water receptacle, and the water in the water receptacle is pulsed simultaneously also by centrifugal force increasing the effect of jigging,
U.S. Patent No. 4,279 has proposed a kind of centrifugal screening machine by Ken Baier (Campbell) in 741, has adopted a columnar mesh screen, and has adopted a spin chamber in one embodiment.
What the present invention proposed also is a screening machine that utilizes centrifugal force, and centrifugal force is to be used for making particle to concentrate with selected in screening process.
A kind of form of the present invention belongs to a kind of centrifugal screening machine, this screening machine comprises that can center on the rotating container of its longitudinal centre line, this container is made up of core and circumferential section, separate by ragging therebetween, screening machine also comprises a device to the core convey materials, and device that when container turns round, makes the liquid vibration in the circumferential section, it is characterized in that above-mentioned vibrating device comprises that an interface device is connected with above-mentioned circumferential section, this interface is beyond radial direction entirely is in the border of convey materials Free Surface substantially, and material is sent to from intersecting an angle with above-mentioned center line.
The same Crouse of equipment of the present invention (Cross) compares with the equipment that Ken Baier (Campbell) is proposed, and has some other advantage, introduces the several embodiment among the present invention below.
Shown in Figure 1 is a profilograph of first embodiment of the invention;
Shown in Figure 2 is the part profilograph of the equipment among Fig. 1;
Fig. 3 is the partial plan layout of the airframe components of equipment shown in Figure 1;
Shown in Figure 4 is the cross-sectional view of case member;
Shown in Figure 5 is the partial bottom plane of case member;
Shown in Figure 6 is the cam planes figure of the said equipment;
Fig. 7 is the sectional drawing of cam shown in Figure 6 along the 7-7 hatching;
Shown in Figure 8 is the side view of cam;
Shown in Figure 9 is the profilograph of second embodiment of the invention;
The cam drive parts of embodiment in the local figure presentation graphs 9 shown in Figure 10;
Shown in Figure 11 is the local sectional side view of the screening machine of another one embodiment of the present invention, has cancelled barrier film here and replaces the air/water interface; And
Shown in Figure 12 is the schematic partial sectional view of the screening machine among Figure 11.
Equipment shown in Figure 1 comprises a base 20, and also mounted thereto of transmission device (this will introduce in the back) and bearing block 21 is housed on base.An outer drive shaft 23 is installed on the taper roller bearing 22 in bearing block 21, a discoidal ring flange 24 is housed in the upper end of this power transmission shaft.
There is a supporting seat 25 to be installed on the ring flange 24 by pillar 26.A cam drive axle 29 is installed in outer drive shaft 23, and this cam drive axle 29 is installed in the bearing 28 in bearing 27 and the supporting seat 25.
A support housings 38 also is housed on ring flange 24, a ring 39 is installed on this support housings, on this ring a shell 40 is housed, this shell is represented more in detail in Fig. 3, Fig. 4 and Fig. 5.
A loam cake 41 is housed on shell 40, and it has ring flange 42 and a collet 43 of a circle, and its effect is described later.
Screw thread part 45 on center supporter 44 is equipped with a feed pipe 46.Because feed pipe 46 will be in company with case member 40 revolution, be connected so between feed pipe 46 and water inlet pipe 48, disposed a rotary seal 47.
Have a suspension delivery cannula 50 to be installed in the outside of feed pipe 46 and communicate with a suspension inlet tube 49, the lower end of suspension delivery cannula 50 is openings, links to each other with space segment 51, and this space segment is between equipment center line and mesh screen 52.This mesh screen comprises the wire screen of a wedge shape, and this mesh screen has general version, and its specification adapts to the instructions for use of this equipment, and typical specification is can be by 300 microns particle.The top of this mesh screen is installed in loam cake 41 theres, and its underpart then is installed in the groove 53 of shell 40.The characteristic of this mesh screen 52 is with explanation further in the back.
Feed pipe 46 by a center recess 55 and radially grooving 56 be connected with space segment 54, this space segment is between the frustum sidewall of mesh screen 52 and shell 40, above-mentioned radially grooving 56 is to leave on the core 44 of housing parts 40.
The following of space segment 54 sealed by a circular rubber membrane 57, and the edge, outer ring of rubber membrane is fixed on the inner ring of annulus 39, and the inner ring edge of rubber membrane is then supported by limit, the outer ring portion of supporting seat 25.
Fixing the upper part of truncated cone vibrator 58 at the mid portion of rubber membrane 57, the vibrator of this truncated cone be installed in cam drive axle 29 around.The end portion of vibrator 58 is to be fixed between the pair of cams 59 with the mode that clamps, and can see more clearly cam in Fig. 6 Fig. 7 and Fig. 8.Cam 59 is installed on the center bearing shell 60 of axle 29, and the cam surface 61 of cam leans against on the rolling bearing 62, and rolling bearing 62 is to be fixed on the axle 29 with bolt 63.The shape on cam mould surface is to consider like this: when 29 revolutions of cam drive axle, rolling bearing 62 also will be along with turning round together and lean against on the cam 59, therefore cam will move back and forth along the axis direction of power transmission shaft 29, gets on thereby this motion is delivered to rubber membrane 57.
Can see clearly especially from Fig. 5, three foliated negative areas 64 are arranged on the bottom of shell 40, these negative areas lead to the outlet nozzle 65 on shell 40 circumference.The shape of leading to the sidewall of these negative areas that export nozzle 65 can both make the radius of drawing with equipment centre of gyration line intersect constant angles on any point, and among this embodiment shown on figure, this angle is 30 °.Sidewall adopts the purpose of this shape will be explained below.
As shown in Figure 1, around the equipment upper part chute device is housed, this device comprises loam cake 66, lateral wall 67 and following bottom 68, so just constitute a blow tank 69, constituted second blow tank 73 by circumferential side wall and bottom 70,71 and 72 simultaneously.Can see that the space segment above blow tank 69 and the ring flange 42 is connected, blow tank 73 then is used for accepting the material from outlet nozzle 65.Undoubtedly, chute device necessarily is mounted on the base 20, does not just express the method for installation on figure.
The operating process of the said equipment is as follows:
The support outer ring 38, the shell 40 that are driven when outer drive shaft and it, loam cake 41 and ring flange 42 be by driving motor 34 transmissions during with the revolution of certain speed, and the water of sending here from water inlet pipe 48 enters the space segment 54 by feed pipe 46 and center recess 55 and grooving 56.Simultaneously, the material that needs screening is sent in the screening machine by suspension inlet tube 49 and delivery cannula 50 with the form of the suspension for preparing.Enter the suspension of space segment 51 from the lower ending opening of feed sleeve pipe 50, because housing parts 40 is in revolution, thus will inevitably outwards be got rid of, and make its acceleration by the rib 67 of center supporter 44.Meanwhile, the water of feed has been full of space segment 54.
Before delivering to suspension and water in the screening machine, earlier the ragging material with certain size and density is packed in the space segment 51, selected ragging specification and density should be suitable for the material and the fine grained chippings of screening are separated.The material that is suitable for doing ragging comprises and grinding with corundum, aluminium/copper alloy ball and lead glass ball etc.
The equipment revolution will make the ragging material be in above the mesh screen 52, promptly be got rid of to the outside after the material that will screen enters space segment 51 simultaneously, and will move upward along ragging material and mesh screen.Under action of centrifugal force, the ragging material will be pressed on the mesh screen 52, the deflation similar phenomena of ragging material in this and the general vibration water gravity screening machine.When 29 revolutions of cam drive axle, rubber membrane 57 will move upward under the effect of cam 59, water in space segment 54 will be subjected to certain pressure, and this vibration will make the expansion of ragging material production, from and as gravity screening, the heavier material particles of sending to can outwards be moved, because this moment, equipment turned round with respect to lighter particle.When rubber membrane 57 returns or when moving downward, the pressure in the space segment 54 will reduce, so the ragging material will become compact again, for extensional motion is next time got ready.
Like this, as on the gravity screening machine, but its effect is by replacing acceleration of gravity to be strengthened with centripetal acceleration, and the particle that proportion is bigger will see through ragging material and mesh screen 52 and enter space segment 54.Undoubtedly, these particles will move on the outer wall of shell 40 soon, because this outer wall has the shape of taper, thereby particle be moved down, and enter negative area 64.Then, the material of separating will enter along the sidewall of negative area 64 in the outlet nozzle 65, and spill out with a certain proportion of washwater, enter the blow tank 73 of heavier particle, the suspension that includes the proportion smaller particles then can not pass through the ragging material, this a part of particle will be from the opening above the space segment 51, by collet 43, climbs over ring flange 42 and enters blow tank 69.
As mentioned above, the shape of negative area 64 sidewalls can both make the radius of drawing with equipment centre of gyration line intersect constant angles on any point.The selection of this angle will be subjected to the influence of the frictional behaviour of Surface Machining precision and material therefor, but, have been found that 30 ° of angles are suitable: select for use after such angle, just can not have material and accumulate in phenomenon on these sidewall surfaces, on the contrary, when equipment turned round with normal service speed, negative area 64 also can continuously obtain cleaning, and often kept clean.
Under desirable condition, density is that the liquid of ρ turns round with angular speed Ω around a vertical center line Z, and have radially limiter (for example in a rotating cylindrical tube), gravity acts on the direction of negative center line Z, so just can show under stable condition, in liquid certain a bit (r, Z) pressure on will be calculated and be got by following formula:
P＝p+ρ〔g（H-Z）- (Ω2)/2 （R
2-r
2）〕…（1）
P means by certain a bit (R, pressure on the Free Surface of liquid H) (such as atmospheric pressure) in the formula.Since p=p on the Free Surface of liquid, so Free Surface will be limited by following formula:
Z＝H- (Ω
2)/(2g) （R
2-r
2）
A bit (R H) will determine according to the height and the internal diameter of collet 43 on the above-mentioned screening machine certain.
Under the theoretical operation condition of above-mentioned screening machine, the fluid pressure at the interface of ragging material and suspension, on whole suspension height, will keep steady state value, can see too clearly from top equation (1), this interface will be on the paraboloid of revolution, and the suspension Free Surface that is limited by equation (1) just will be on such parabola.
According to the present invention, the shape of mesh screen 52 will make the interface of suspension/ragging be on the essential curve, so that the relation of being said above utilizing obtains screening machine when operating desired special speed of gyration.
In ideal conditions, the shape of mesh screen can make the thickness of ragging keep constant on the whole height of mesh screen.The curvature of mesh screen will determine according to the theoretical interface of ragging/suspension certainly, and the thickness of ragging will be determined according to the amount of the ragging material of the screening machine of packing into.
Like this, in theory, the correct curve at ragging/suspension interface can calculate, and this curve radially outward move one equal ragging thickness apart from δ r, so that determine the curve of mesh screen shape.Certainly, obtain with method for distinguishing under the general condition that the approximation of this curve also can be said in the above.But, on the practical work, the correct curve of mesh screen will be a parabola, and this parabolical curvature is bigger slightly than the numerical value of trying to achieve with said method.This is because like this, promptly sends the suspension that comes to and has a kind of hysteresis, makes the bottom of the Free Surface of suspension be in radially inwards position, otherwise will be desirable.The up-to-date particle that comes sent to is in the bottom of mesh screen, and therefore originally on one's body particle is littler than being in mesh screen for the acceleration that is born.Along with particle moves up, they will outwards move, and its acceleration will increase to some extent.
Clearly, along with the increase of screening machine speed of gyration, the curvature of best mesh screen shape will reduce, and under the infinitely-great limiting case of acceleration, best mesh screen shape will be a cylinder.But, in fact, this effect will be offset by the top hysteresis of saying, and along with reducing of acceleration, the parabolical curvature of theoretic mesh screen will increase, and the effect of hysteresis will reduce relatively, therefore in using reality of the present invention, will find, these effects will be cancelled each other, so that in the whole velocity interval of screening machine, best parabola always can be suitable for.
The degree of depth of the suspension on the screening machine bottom surface is that the radius by collet 43 decides, and in this first embodiment, screening machine equipment can adopt removable loam cake 41, these loam cakes have the collet of different-diameter, so that can align the degree of depth of suspension, make a certain amount of material of sending to obtain maximum recovery ratio.
Will be appreciated that, under the very high acceleration that can reach when this screening machine is on-stream, mesh screen 52 will be very little from a simple frustoconical shape (as Crouse (Cross) says) or at the absolute value that changes from a cylindrical shape (as Ken Baier (Campbell) says).Such as, be 80G on the equipment of being said in the above, on this equipment, the height of mesh screen is 63 millimeters, the bottom of mesh screen is only compared at radially inwards 3 millimeters with its top.But must remember that in this case the thickness of ragging has only 19 millimeters, and the thickness of suspension is generally 5 millimeters.In addition, selected granular size might be less than 100 microns, and the diameter of ragging material is in 600～1000 micrometer ranges.Therefore, the shape of mesh screen is significant, if want to make the operating efficiency of this screening machine to reach peaked words.
See that rubber membrane 57 is circular, and only at the local work of mesh screen 52 beyond radially.So just guaranteed the not the inside work of the suspension Free Surface in the imagination of this rubber membrane, that is to say that this rubber membrane is to be in such zone, here space segment 51 and 54 all is to stretch downwards rather than link to each other with supporting seat 25 with film, because the suspension Free Surface separates in radially outward direction and this zone, so do not have suspension here.
Like this, by below mesh screen 52 base plane, and then dispose the rubber membrane of a circle, this film will be very near the washwater in the space segment 54, thereby reduced the amount of movement of water, and the coupling between washwater and the film is reached at utmost.The area of rubber membrane can be near the area of washwater bottom, thereby can make film reduce to minimum degree in order to reach certain needed stroke that moves up and down of vibrating effect.
If the present invention getable vibrating effect compare with the method that Crouse (Cross) is proposed, also further comprise more like this, be rubber membrane come down to be in high pressure under liquid coupling mutually, this is because the liquid that is under centrifugal action in the space segment 54 has high pressure.This pressure has not only quickened rubber membrane and has dropped to its extreme lower position in the control of cam 59, and has in fact also kept acting on a downward net pressure on the cam.Like this, in backstroke the process of packing of ragging will be not only rapidly but also wide, the net flow that enters the washwater that goes in the space segment 51 is very little.In fact, the water yield of adding in the residue on sieve also is no more than about 5%.
The effect of this hydraulic characteristic(s) is exactly the vibration that will produce both forward and reverse directions in ragging, and this effect is unavailable in the method that Crouse (Cross) is proposed, because in his method be not material, ragging material and washwater is turned round together.In the method that Ken Baier (Campbell) is proposed, also can not get such effect, because the mode of vibration difference that he adopted.
Verified on this screening machine equipment of introducing and illustrating to carry out very effective separation according to the different specific weight of particle in the above, and for some very tiny particles, this method is effective especially, and these fine particles are impossible separate with other general methods such as the granule less than 100 microns.According to the screening machine of preferred embodiment design the particle size range that can separate effectively be: 20 microns account for 50%, 5 microns account for 8%, what can reach is selected greater than 30 times, size is little can to obtain favourable result to 5 microns gold mine powder for containing, and recovery ratio can reach 90% even higher.
The speed of gyration of outer drive shaft 23 is determining to affact the acceleration on the particle, and the speed of gyration of cam drive axle 29 then determines the number of times of screening machine vibration, and above-mentioned these speed all will be determined by the test to specific material.But, if having been found that when running speed when screening machine can make ragging obtain acceleration in the 100g scope, just can produce satisfied result.Certainly, the stroke size of rubber membrane 57 is to be controlled by the parameter of cam face 61, and cam 59 can be changed, so that the stroke size of conversion film, thereby under the situation of a certain material, make the operation of screening machine obtain best effect.
The present invention can have a variety of alternative embodiment, and should be understood that here the embodiment that introduces and illustrate of institute only is one of them example.The rubber membrane 57 here can replace with the film that is installed on the equipment sidewall, and simultaneously, it is multiple available that the method for vibration of thin membrane also can be had, such as the method that can adopt electric or electromagnetism.Equally, the configuration of material and/or ragging material also can be adopted the mode different with above-mentioned situation with layout.
Shown in Fig. 9 and Figure 10 is among these alternative embodiment one, in this embodiment, is used for making the mechanism of film 57 vibrations compact more.
In this embodiment, support outer ring 38 and support member 74 of vibrator 58 usefulness and replaced, this support member is installed on the ring flange 24.Have the flange 75 of an annular to be used for the marginal portion of the inside of base for supporting 25 and film 57 in the inside of support member 74, the outside of support member 74 also has an annular flange 76 to be used for the marginal portion and the case member 40 of outside of support film 57.
A bevel gear 77 is housed in the upper end of cam drive axle 29, and this bevel gear is installed in the bearing in the base 78, and this base 78 is installed in above the ring flange 24.
The pinion 79 that is provided with radial arrangement by equidistant position on base 78 circumference is used for transmission axle 80 radially.
The perforate that the axle 80 of radial direction passes through on the interior circular annular flange 75, and on one end of the outside of every axle, bearing 81 is housed, this bearing is installed on the support member between flange 75 and 76 74.On the end of the outside of every axle 80 crank 83 is housed also, a bearing 82 also is equipped with in the outside of this crank.Each crank 83 drives parts that link to each other with film 84.
In the above among the embodiment that is said, there is the eccentric of six such drive films to be configured in respectively on the circumference of film 57, and know better, these parts 84 will make film produce harmonious up-down vibration, that is to say, when 29 revolutions of cam drive axle, the axle 80 of transmission radial direction, and these will drive the parts 84 generation up-down vibration that link to each other with film.
The perforate of the flange 76 by the outside can touch each crank part 83 easily, just can change these cranks when needs change the vibratility adjustment of film 57.
Figure 11 and shown in Figure 12 be on centrifugal screening machine, to use the method that another kind of the present invention makes the washwater vibration, and as before, the numbering of each parts is all consistent with corresponding numbering among the embodiment that the front is said.
In the embodiment shown in fig. 11, having cancelled that rubber membrane 57, is that screening machine has been simplified widely from mechanical aspects therefore.The interface of the air/water that produces at washwater zone 54 lower face branch has replaced original rubber membrane, because the air pressure of feed vibrate, therefore makes washwater produce the vibration of necessity.
As shown in figure 11, the screening machine of this embodiment comprises a frame 85 that is used for base for supporting 20, and a bottom axle bed 86 has been installed below bearing block 21.Because that independent transmission device of drive thin film is no longer necessary, so just hydraulic motor 34 directly can be contained in the bottom of axle bed 86.
As shown in figure 11, the blow tank of the particle that proportion is bigger is positioned at 87 places, and the proportion smaller particles is left screening machine from blow tank 88.
As shown in figure 12, the upper housing 89 that limits the washwater space segment is installed on the bottom support 90, and in this embodiment, this bottom support 90 is symmetrical with upper housing 89, just like the shadow in the mirror, and the bottom support forms a negative area 91 below washwater space segment 54.
Negative area 91 communicates with centre chamber 93 by aperture 92, and centre chamber forms between center supporter 44 and ring flange 24, and simultaneously, this centre chamber also is connected with the centre bore 94 of screening machine power transmission shaft top 23a.
The lower part 23b that below power transmission shaft upper part 23a, is connecting power transmission shaft, and hydraulic motor 34(sees Figure 11) just be connected with this a part of power transmission shaft.A centre bore 95 is arranged in power transmission shaft 23b, the lower end of this centre bore is sealed, and its upper end communicates with centre bore 94, one or several blow vent 96 is radially arranged on this centre bore, when axle 23b is rotating, these blow vents radially will be periodically with following axle bed 86 in air inlet 97 connect.In axle bed 86, have a circumferential seals 98 be contained in a 23b around.
Below centre bore 95, have one or several gas outlet 99 periodically with axle bed 86 in outlet 100 be connected.
Air inlet 97 is connected with compressed-air actuated air supply pipe, thereby just has a succession of air pressure panting action when screening machine is rotating to centre chamber 93.Compressed-air actuated pressure can be regulated according to the speed of gyration that is adopted, so that the interface 101 of air/water is in beyond the radial direction of the Free Surface of water in the negative area 91 slightly, and the pulsation that pressure increases will make this interface outwards move, thereby produces needed vibrating effect in ragging mesh screen 52 theres.
The degree of depth of negative area 91 preferably comes to determine like this, makes the height at the interface 101 of air/water equal the height of mesh screen 52 substantially, and therefore, the extra air pressure that needs in order to make washwater obtain desired vibration is just very little.In addition, in this embodiment, vibration residing position, interface makes the coupling effectively of itself and washwater, thereby can be expanded rapidly and compress by ragging.
In Figure 11 and embodiment shown in Figure 12, suspension is that the path 10 2 by radially enters the mesh screen zone, the there has distributor 103 to be installed on the center supporter 44, all scribbles wear-resisting polyurethane coating 104 on the surface of these passages, sleeve pipe 50 and center supporter 44.Blow tank 73 theres at heavy particle have a rubber barricade 105 to hang over the opposite that exports nozzle 65, so that reduce the wearing and tearing of this blow tank inside.
By air inlet 97 and gas outlet 100 and blow vent 96 and 99 of taking suitable shape, and make its position reasonable, just can control action size, frequency and the shape of air pressure vibration to the air/water interface, and these parameters are the speed of gyration that is suitable for a certain screening machine that draws by test and the character of the material that screens.
Although under situation of the present invention, preferably use as air-flow with air, if having the band pressure other gases can utilize and easily words, this gas also is operable.
Have been found that in practice that according to the screening machine of the embodiment in Figure 11 and 12 suitable vibration frequency is in per minute 1400 times to 2500 times or higher scope.Owing to the acceleration 101 theres at the air/water interface along with air outwards promotes the paraboloid of revolution of water from the Free Surface of representing stable state to increase sharply, and the returning pressure of water also correspondingly increases, therefore find, for the correct air pressure under a certain angular speed be to when screening machine turns round, increase this pressure gradually, until till the vibration of washwater and ragging material production, come to determine correct air pressure in this way.
Except controlling with the way of the lining of regulating air inlet and gas outlet and shape, can also improve the radial contour shape of negative area 91, so that change the air/water interface of the effect of being under pressure and the relation between its radial position, thereby can improve the shape of vibration wave.
Claims (17)
1, a kind of centrifugal sifting machine comprises that can center on the rotating container of its longitudinal centre line, this container comprises a core and a circumferential section, separate with ragging therebetween, this container also comprises a material screening pack into device and a device that is used for making the liquid vibration in the above-mentioned circumferential section in the container turning course of core, it is characterized in that above-mentioned vibrating device comprises an interface device that is connected with above-mentioned circumferential section, this interface is beyond radial direction entirely is in the border of material Free Surface substantially, and material is sent to from intersecting an angle with above-mentioned center line.
2, the screening machine of saying according to claim 1 is characterized in that above-mentioned interface device is a film apparatus.
3, the screening machine of saying according to claim 2 is characterized in that it comprises that also makes the reciprocating transmission device of above-mentioned film apparatus.
4, the screening machine of saying according to claim 1, it is characterized in that above-mentioned film apparatus be mounted in above-mentioned circumferential section below, and constitute the part of said vesse bottom.
5, the screening machine of saying according to claim 1, it is characterized in that above-mentioned interface device comprises one at liquid that is connected with liquid in the above-mentioned circumferential section and the interface between the gas, above-mentioned interface is decided by the pressure of above-mentioned gas in radially position system, above-mentioned gas pressure vibrates, thereby can make the liquid in the above-mentioned circumferential section produce vibration.
6, the screening machine of saying according to claim 5, it is characterized in that it also comprises a following and coupled logical liquid chamber that is positioned at above-mentioned circumferential section, a inside that is positioned at aforesaid liquid chamber radial direction and coupled logical gas compartment, one is used for the gas of band pressure is sent into device and a device that makes the pressure vibration in the above-mentioned gas chamber in the above-mentioned gas chamber.
7, the screening machine of saying according to claim 6 is characterized in that minimum pressure at above-mentioned gas at the interface is exactly to make above-mentioned interface remain on the pressure of the outside of liquid free surface in the aforesaid liquid chamber in radial direction under the rotating speed of container.
8, the screening machine of saying according to claim 7 is characterized in that it also comprises a device, it can be continuously in above-mentioned circumferential section and above-mentioned liquid chamber feed liquid.
9, the screening machine of saying according to top any one listed claim, it is characterized in that above-mentioned ragging limits it in radial direction by a mesh screen and outwards moves, above-mentioned mesh screen is the paraboloid of revolution shape substantially, its center line and above-mentioned longitudinal centre line coincide, and the shape of above-mentioned mesh screen is that the interface between above-mentioned ragging and the above-mentioned material is on the constant substantially rotary surface of a pressure.
10, a kind of centrifugal sifting machine comprises that can center on the rotating container of vertical longitudinal centre line, this container comprises a core and a circumferential section, separate with ragging therebetween, this container also comprises a material screening pack into device and a device that is used for making the liquid vibration in the above-mentioned circumferential section in the container turning course of core, above-mentioned ragging is subjected to the qualification of mesh screen device in radial direction, it is characterized in that the shape of above-mentioned mesh screen device wants to make the interface between above-mentioned ragging and the above-mentioned material to be on the constant substantially rotary surface of a pressure.
11, the screening machine of saying according to claim 10 is characterized in that: above-mentioned mesh screen is on the paraboloid of revolution substantially, and its center line and above-mentioned longitudinal centre line coincide.
12, the screening machine of saying according to claim 11 is characterized in that it also comprises a ring flange that inwardly stretches from the upper limb along continuous straight runs of above-mentioned mesh screen.
13, the screening machine of saying according to claim 12 is characterized in that it also comprises the drawing mechanism of a residue on sieve, and this device is connected with radially outer space segment above the above-mentioned ring flange.
14, according to any one screening machine of saying in the claim 10 to 13, it is characterized in that it comprises the drawing mechanism of a heavy material, this device is positioned at the outside and coupled the leading to of above-mentioned circumferential section.
15, a kind of centrifugal sifting machine comprises that can center on the rotating container of vertical longitudinal centre line, this container comprises a core and a circumferential section, separate with ragging therebetween, and ragging is subjected to the qualification of mesh screen device in radial direction, this container also comprises pack into the device of above-mentioned core of a material screening, a device and a heavy material drawing mechanism that is positioned at the above-mentioned circumferential section outside that is used in the container turning course, making the liquid vibration in the above-mentioned circumferential section, it is characterized in that: the material of separating by above-mentioned ragging and above-mentioned mesh screen enters above-mentioned heavy material blow tank through negative area, negative area is connected with above-mentioned circumferential section, above-mentioned chamber comprises the sidewall of assembling to the negative area outlet, and the shape of above-mentioned sidewall can both intersect constant angles with the radius that above-mentioned longitudinal centre line is drawn on any point on its length.
16, the screening machine of saying according to claim 15 is characterized in that above-mentioned angle is to select according to the coefficient of friction of sidewall and the frictional behaviour of heavy material, accumulates on these sidewall surfaces not having material under this angle.
17, the screening machine of saying according to claim 14, wherein above-mentioned angle approximately is 30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86100898 CN1007587B (en) | 1986-02-18 | 1986-02-18 | Centrifugal jig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86100898 CN1007587B (en) | 1986-02-18 | 1986-02-18 | Centrifugal jig |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN86100898A true CN86100898A (en) | 1987-09-02 |
| CN1007587B CN1007587B (en) | 1990-04-18 |
Family
ID=4801242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86100898 Expired CN1007587B (en) | 1986-02-18 | 1986-02-18 | Centrifugal jig |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1007587B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102192520A (en) * | 2010-03-16 | 2011-09-21 | 钦州鑫能源科技有限公司 | Method for preparing ash water coal slurry |
| WO2011113342A1 (en) * | 2010-03-15 | 2011-09-22 | 钦州鑫能源科技有限公司 | Preparation method for ultra low ash coal-water slurry |
| CN108883425A (en) * | 2016-04-13 | 2018-11-23 | 阿法拉伐股份有限公司 | Separator disk for centrifugal separator and the disk group including such separator disk |
| CN115338042A (en) * | 2022-10-17 | 2022-11-15 | 苏州星亿机械有限公司 | Centrifugal device based on discharge centrifuge |
-
1986
- 1986-02-18 CN CN 86100898 patent/CN1007587B/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011113342A1 (en) * | 2010-03-15 | 2011-09-22 | 钦州鑫能源科技有限公司 | Preparation method for ultra low ash coal-water slurry |
| CN102192520A (en) * | 2010-03-16 | 2011-09-21 | 钦州鑫能源科技有限公司 | Method for preparing ash water coal slurry |
| CN102192520B (en) * | 2010-03-16 | 2013-07-10 | 钦州鑫能源科技有限公司 | Method for preparing ash water coal slurry |
| CN108883425A (en) * | 2016-04-13 | 2018-11-23 | 阿法拉伐股份有限公司 | Separator disk for centrifugal separator and the disk group including such separator disk |
| US11426739B2 (en) | 2016-04-13 | 2022-08-30 | Alfa Laval Corporate Ab | Separating disc for centrifugal separator and disc package comprising such separating discs |
| CN115338042A (en) * | 2022-10-17 | 2022-11-15 | 苏州星亿机械有限公司 | Centrifugal device based on discharge centrifuge |
| CN115338042B (en) * | 2022-10-17 | 2023-02-03 | 苏州星亿机械有限公司 | Centrifugal device based on discharge centrifuge |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1007587B (en) | 1990-04-18 |
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